Abstract

Disclosed are a method, apparatus, and recording medium for image encoding/decoding using geometric partitioning. A target block is partitioned into a first partition region and a second partition region through geometric partitioning. A partitioning boundary for the target block is more precisely defined using a sub-offset. A list of partitioning modes of geometric partitioning is constructed, and the partitioning modes of the list are constructed on the basis of information on pixels and blocks adjacent to the target block. In addition, filtering is performed on the target block on the basis of the partitioning modes of geometric partitioning.

IPC Classes  ?

• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• H04N 19/157 - Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques

Abstract

This specification discloses an image encoding/decoding method and apparatus, and a recording medium for storing a bitstream. The image decoding method may comprise the steps of: decoding information regarding prediction of the current block; deriving an intra prediction mode of the current block on the basis of the information regarding the prediction; and generating a prediction block of the current block on the basis of the intra prediction mode. On the basis that the information regarding the prediction includes an intra prediction combined mode, in the deriving step, two or more intra prediction modes are derived, and in the generating step, the prediction block may be generated by combining the two or more intra prediction modes.

IPC Classes  ?

• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/60 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]

Abstract

A method and a device for image encoding/decoding, and a recording medium are provided. The method for image encoding/decoding comprises determining prediction information for a target block and performing prediction on the target block by using the prediction information. Padding is performed on a target image related to prediction. Here, the outside area of the target image is used as a reference block of a block in a different image, a part of a reference block of a block in a different image, or an object to which an interpolation filter is applied in motion compensation in inter prediction of a block in a different image. For padding, padding using a fixed value, padding on the basis of a pixel value in the target image, or padding on the basis of motion information in the target image is performed.

IPC Classes  ?

• H04N 19/57 - Motion estimation characterised by a search window with variable size or shape
• H04N 19/563 - Motion estimation with padding, i.e. with filling of non-object values in an arbitrarily shaped picture block or region for estimation purposes
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/157 - Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]

Abstract

A method, a device, and a recording medium for image encoding/decoding are disclosed. The method for image encoding/decoding comprises the steps of: determining a prediction scheme for a chroma block; determining information for deriving a cross-component prediction model; and generating a chroma prediction block by using the cross-component prediction model. The chroma prediction block is derived by one or more of a cross-component linear model (CCLM), a gradient linear model (GLM), a filter-based linear model (FLM), and a convolution cross-component model (CCCM).

IPC Classes  ?

• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/117 - Filters, e.g. for pre-processing or post-processing
• H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• G06N 3/08 - Learning methods

Abstract

A method and an apparatus device for image encoding/decoding, and a recording medium are disclosed. In a conventional image encoding/decoding method, a decoder-side motion information derivation method can be used with limitations. Therefore, encoding efficiency improvement due to the decoder-side motion information derivation method can be limited. A motion information search method used in prediction is disclosed in embodiments. Sub-sampling is applied to various processes and targets, such as a search region, used in the motion information search method.

IPC Classes  ?

• H04N 19/503 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/184 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

A method, a device, and a recording medium for image encoding/decoding are disclosed. The method for image encoding/decoding comprises the steps of: determining a template for a target block; selecting a template matching reference image; searching for an optimal template matching block within the template matching reference image using a template; and performing encoding/decoding using the optimal template matching block. Prediction for the target block may be performed using the optimal template matching block. The recording medium may store computer-executable code for an image decoding method, and may store information generated by an image encoding method.

IPC Classes  ?

• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/60 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding

Abstract

The present invention relates to a scheduling technology for communication between terminals of a communication system. Provided may be a method for a first terminal, comprising the steps of: configuring, in a resource pool of sidelink, resource block (RB) sets in units obtained by adding a protection band to a listen-before-talk (LBT) bandwidth; configuring a subchannel including two or more physical resource blocks (PRBs) from among a plurality of PRBs included in each of the RB sets; generating sidelink control information including identification information of scheduled at least one subchannel from among a plurality of subchannels configured in the RB sets; and transmitting the sidelink control information to a second terminal.

IPC Classes  ?

• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/04 - Wireless resource allocation
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 24/08 - Testing using real traffic
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices
• H04W 72/12 - Wireless traffic scheduling

Abstract

The present invention relates to technology for feedback in an inter-terminal communication of a communication system. A method performed by a first terminal may comprise the steps of: receiving a PSSCH in a slot n from a second terminal through a sub-channel; determining PRB sets for transmitting a PSFCH corresponding to the PSSCH on the basis of the slot n and an index of the sub-channel; identifying a PRB set for transmitting the PSFCH among the PRB sets; identifying a slot, configured in order to transmit the PSFCH, K slots after the slot n; and using the identified PRB to transmit the PSFCH in the identified slot, wherein n and K are positive integers.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/04 - Wireless resource allocation
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/232 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Abstract

The present disclosure provides a random access method. The method according to an embodiment of the present disclosure, performed by a terminal using an asynchronous grant-free non-orthogonal multiple access scheme, may comprise the steps of: acquiring random access preamble generation information from a base station; generating a primary random access preamble on the basis of the random access preamble generation information; and transmitting the generated primary random access preamble to the base station.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04L 27/26 - Systems using multi-frequency codes
• H04W 56/00 - Synchronisation arrangements
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 84/06 - Airborne or Satellite Networks

Abstract

A technique for beam management in a communication system is disclosed. Provided is the method of a terminal, comprising the steps of: receiving reference signals through primary candidate beams from a base station; acquiring measurement information about the reference signals of the primary candidate beams; using an AI/ML model on the basis of the measurement information about the primary candidate beams so as to select secondary candidate beams; and transmitting, to the base station, the information about the selected secondary candidate beams.

IPC Classes  ?

• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 7/08 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
• H04W 24/08 - Testing using real traffic
• H04W 24/10 - Scheduling measurement reports
• H04B 17/318 - Received signal strength
• H04B 17/336 - Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• G06N 20/00 - Machine learning

Abstract

A method and apparatus for channel access in unlicensed band communication are disclosed. The method for a first terminal comprises the steps of: receiving, from a second terminal, shared information of a COT initiated by the second terminal; on the basis of the shared information, determining whether or not an SL transmission by the first terminal may be performed in the COT; and if the SL transmission may be performed in the COT, performing the SL transmission in the COT shared by the second terminal.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 72/04 - Wireless resource allocation
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 24/08 - Testing using real traffic
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 16/14 - Spectrum sharing arrangements

Abstract

A method and a device for channel access in sidelink communication are disclosed. A method of a first terminal comprises the steps of: initiating a COT; performing groupcast SL transmission within the COT; receiving one or more HARQ-ACK feedbacks for the groupcast SL transmission; when a ratio threshold is configured for the first terminal, calculating an ACK ratio on the basis of the one or more HARQ-ACK feedbacks; and adjusting a CW on the basis of a result of comparison between the ACK ratio and the ratio threshold.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 24/08 - Testing using real traffic
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices
• H04W 72/20 - Control channels or signalling for resource management
• H04W 72/12 - Wireless traffic scheduling

Abstract

Disclosed are a coverage enhancement method and device in a full-duplex communication system. A method of a terminal comprises the steps of: receiving, from a base station, information instructing the performing of a UL transmission; and performing the UL transmission in a resource area including a SBFD symbol and a non-SBFD symbol, wherein, in the SBFD symbol, at least one communication among DL communication or UL communication may be performed, and, in the non-SBFD symbol, only one communication among the DL communication or the UL communication may be performed.

IPC Classes  ?

• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04W 72/04 - Wireless resource allocation
• H04W 72/12 - Wireless traffic scheduling
• H04L 1/08 - Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 5/14 - Two-way operation using the same type of signal, i.e. duplex

Abstract

Disclosed are a method and apparatus for sidelink channel access in an unlicensed band. The method for a first terminal comprises the steps of: on the basis of a groupcast method, transmitting data to a plurality of terminals; receiving, from one or more terminals from among the plurality of terminals, one or more pieces of HARQ-ACK feedback on the data; adjusting the CW size on the basis of the result of comparison between an ACK ratio to the one or more pieces of HARQ-ACK feedback and a threshold value; and performing SL communication on the basis of a CW having the adjusted CW size.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/25 - Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
• H04W 24/08 - Testing using real traffic
• H04W 76/14 - Direct-mode setup
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems

Abstract

A method for a terminal may comprise the steps of: receiving, from a base station, information related to a first operation mode using one of a UL or a DL in a time resource and information related to a second operation mode using both the UL and the DL in the time resource; receiving priority information of UL transmission and DL reception in the second operation mode from the base station; when the UL transmission and the DL reception are simultaneously indicated in the second operation mode from the base station, selecting one of the UL or the DL on the basis of the priority information; and communicating using the selected link.

IPC Classes  ?

• H04L 5/14 - Two-way operation using the same type of signal, i.e. duplex
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 84/04 - Large scale networks; Deep hierarchical networks

Abstract

Disclosed are a method and apparatus for controlling a beam of a wireless repeater. A method for a repeater comprises the steps of: receiving first control information from a base station; confirming one or more beams used by the repeater on the basis of a beam indication field included in the first control information; and relaying communication between the base station and a terminal using the one or more beams.

IPC Classes  ?

• H04B 7/155 - Ground-based stations
• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04W 72/04 - Wireless resource allocation
• H04W 84/04 - Large scale networks; Deep hierarchical networks
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and a device for allocating radio resources in in-band full duplex communication are disclosed. The method of a terminal comprises the steps of: receiving slot format information from a base station; confirming a DL section, an FL section, and an UL section on the basis of the slot format information; receiving UL subband information from the base station; and regarding a DL resource area as an UL resource area if an UL subband indicated by the UL subband information overlaps the DL resource area in the DL section.

IPC Classes  ?

• H04W 72/04 - Wireless resource allocation
• H04L 5/14 - Two-way operation using the same type of signal, i.e. duplex
• H04W 72/231 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
• H04L 27/26 - Systems using multi-frequency codes
• H04W 72/232 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
• H04W 72/54 - Allocation or scheduling criteria for wireless resources based on quality criteria
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A method by which a first device generates a multiplexing signal in a communication system, according to an embodiment, comprises the steps of: identifying first to third transmission powers, which are the respective transmission powers of first to third signals to be multiplexed and transmitted; generating an intermodulation component of the first to third signals; multiplying the first to third signals and the intermodulation component on the basis of the first to third transmission powers; and generating a multiplexing signal having a constant envelope by quadrature-phase-combining, with a linear combination result of the multiplied first and second signals, a linear combination result of the multiplied third signal and the multiplied intermodulation component, wherein the third transmission power can be greater than or equal to the second transmission power, and the second transmission power can be greater than or equal to the first transmission power.

IPC Classes  ?

• H04L 27/00 - Modulated-carrier systems
• G01S 19/01 - Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
• H04J 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

An operation method of a terminal according to an embodiment of a method and device for random access in a wireless communication system comprises the steps of: receiving random access channel (RACH) configuration information from a base station included in a first network; generating a random access (RA) preamble including a plurality of different preamble sequences on the basis of the RACH configuration information; mapping the RA preamble to a first frequency domain; and transmitting, to the base station, the PA preamble mapped to the first frequency domain, wherein the size of the bandwidth occupied by the first frequency domain and the size of the bandwidth occupied by a physical uplink shared channel (PUSCH) in the first network may be set to have an integer multiple relationship with each other on the basis of the RACH configuration information.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 56/00 - Synchronisation arrangements
• H04W 72/04 - Wireless resource allocation
• H04W 72/12 - Wireless traffic scheduling
• H04W 84/06 - Airborne or Satellite Networks
• H04J 13/00 - Code division multiplex systems
• H04L 27/26 - Systems using multi-frequency codes

Abstract

A method and a device for image encoding/decoding, and a recording medium are provided. The image decoding method according to an embodiment may comprise the steps of: decoding encoded information so as to acquire information about a neural network; using the information about the neural network so as to select a neural network; and using the selected neural network so as to decode a target. Here, a neural network can be trained. The neural network training can include at least one from among prior training, data augmentation training, and attention-guided training. The neural network can be a deep neural network of an in-loop filter for in-loop filtering.

IPC Classes  ?

• H04N 19/82 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• G06T 9/00 - Image coding

Abstract

A method and device for avoiding transmission timing errors are disclosed. A RUE method comprising the steps of: receiving a first error measurement request message from a first base station; receiving a second error measurement request message from a second base station; receiving a first reference signal from the first base station on the basis of the first error measurement request message; determining a first transmission timing of the first base station on the basis of the first reference signal; receiving a second reference signal from the second base station on the basis of the second error measurement request message; and determining a second transmission timing of the second base station on the basis of the second reference signal.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 7/00 - Arrangements for synchronising receiver with transmitter

Abstract

An operation method of a first device may comprise the steps of: receiving device control information for controlling the first device from a second device; identifying one or more types of power control information, which are included in the device control information and related to uplink power control of the first device; identifying an association relationship between the one or more types of power control information and one or more resources for uplink transmission of the first device; and on the basis of the one or more types of power control information associated with the one or more resources, determining one or more uplink transmission power values corresponding to the one or more resources.

IPC Classes  ?

• H04W 52/36 - Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
• H04W 52/46 - TPC being performed in particular situations in multi-hop networks, e.g. wireless relay networks
• H04W 52/52 - Transmission power control [TPC] using AGC [Automatic Gain Control] circuits or amplifiers
• H04W 72/20 - Control channels or signalling for resource management
• H04W 84/04 - Large scale networks; Deep hierarchical networks

Abstract

A method, a device, and a recording medium for image encoding/decoding are disclosed. Provided in embodiments are a method, a device and a recording medium which efficiently implement a lightweight in-loop filter and a lightweight predictive deep neural network in order to enhance the encoding efficiency of an image and reduce the time required for encoding. Provided in embodiments is learning in a lightweight in-loop filter and a lightweight predictive deep neural network through a knowledge distillation technique. Provided through embodiments is a learning method in an in-loop filter and a predictive deep neural network for enhancing the encoding efficiency and speed of an image.

IPC Classes  ?

• H04N 19/82 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/51 - Motion estimation or motion compensation
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• G06T 9/00 - Image coding
• G06N 3/02 - Neural networks

Abstract

A method and a device for changing a link in a wireless LAN supporting EMLSR are disclosed. A method of a first device comprises the steps of: on a first link among multiple links, receiving, from a second device, a first frame including first information indicating discontinuation of using the first link; and performing first communication with the second device on a second link, for which discontinuation of use is not indicated by the first frame, among the multiple links.

IPC Classes  ?

• H04W 76/15 - Setup of multiple wireless link connections
• H04W 76/22 - Manipulation of transport tunnels
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 84/12 - WLAN [Wireless Local Area Networks]
• H04W 76/20 - Manipulation of established connections
• H04W 52/02 - Power saving arrangements
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]

Abstract

The present disclosure provides a communication method and apparatus using an improved repeater, such as NCR, RIS, or the like, which can be applied in a wireless communication system. The communication method for a repeater in a wireless communication system, according to an embodiment of the present disclosure, may comprise the steps of obtaining control information from a network node and controlling the repeater on the basis of the control information.

IPC Classes  ?

• H04W 24/02 - Arrangements for optimising operational condition
• H04B 7/155 - Ground-based stations
• H04W 16/28 - Cell structures using beam steering
• H04W 72/20 - Control channels or signalling for resource management
• H04W 84/06 - Airborne or Satellite Networks
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• G06N 20/00 - Machine learning

Abstract

Disclosed are an audio rendering method and an apparatus for performing same. The audio rendering method according to an embodiment may comprise the steps of: acquiring a first distance relating to recording of an audio signal relating to an audio object; acquiring a second distance that is a distance between the audio object and a listener; and on the basis of the first distance and the second distance, rendering the audio signal by applying an effect of attenuation due to air sound absorption.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase

Abstract

Disclosed are a method, apparatus, and recording medium for image encoding/decoding. When initial motion information regarding a target block is determined, a list is generated on the basis of the initial motion information. Motion information regarding the target block is determined by using candidates in the list. The motion information or final motion information generated via correction of the motion information is used to generate a prediction block for the target block. Some of the candidates in the list may be selected on the basis of the cost of the candidates. Various methods are used to determine the cost of the candidates and make the selection based on the cost.

IPC Classes  ?

• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]

Abstract

A method, a device, and a recording medium for image encoding/decoding are disclosed. Methods for performing more accurate prediction when performing prediction using a block vector are disclosed. A block vector for a target block is derived by template matching, and a prediction block for the target block is determined on the basis of the derived block vector. Various specific embodiments relating to multiple pieces of information used to derive the block vector are provided, the information including a search region, a list of block vector candidates, a reference region, a buffer, and a tree type.

IPC Classes  ?

• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/91 - Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
• H04N 19/184 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]

Abstract

Disclosed are a method and device for sidelink communication in an unlicensed band. The method of a first terminal comprises the steps of: receiving SCI from a second terminal; receiving data scheduled by the SCI from the second terminal; generating an HARQ-ACK for the data; and conducting a first LBT operation for transmission of the HARQ-ACK in a first PSFCH occasion among N PSFCH occasions set in the first terminal.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/12 - Wireless traffic scheduling
• H04W 72/04 - Wireless resource allocation
• H04W 24/08 - Testing using real traffic
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04L 27/26 - Systems using multi-frequency codes

Abstract

Disclosed are a constant envelope multiplexing apparatus and method for the three same power signals for satellite navigation signal generation and transmission system. The constant envelope multiplexing apparatus comprises: a signal generator for generating a first satellite navigation signal, a second satellite navigation signal, and a third satellite navigation signal; a modulator that modulates signals having the same phase to different chip pulse waveforms, the signals being generated by setting the amplitude and phase of an in-phase component and the amplitude and phase of a quadrature phase component on the basis of relationships between sample absolute values respectively corresponding to variable instantaneous power of the first to third satellite navigation signals; and a multiplexer for performing constant envelope multiplexing on satellite navigation signals modulated by the modulator, wherein the sample absolute value of the first satellite navigation signal and the sample absolute value of the second satellite navigation signal have a first value and a second value each with frequency of 0.5 during chip pulse modulation of the modulator.

IPC Classes  ?

• G01S 19/35 - Constructional details or hardware or software details of the signal processing chain
• G01S 19/30 - Acquisition or tracking of signals transmitted by the system code related

Abstract

Disclosed are an image encoding/decoding method and a device, and a recording medium for storing a bitstream. An image decoding method according to an embodiment may comprise the steps of: reconstructing an encoding mode of a unit block; reconstructing one or more sub-blocks of the unit block; reconstructing the unit block from the one or more sub-blocks on the basis of the encoding mode; and reconstructing an image on the basis of the unit block, wherein the encoding mode includes at least one among a first mode, in which the unit block is divided into two or more sub-blocks using a prescribed scanning method, a second mode, in which sub-blocks of a lower resolution are generated from the unit block, and a third mode, in which the unit block is sampled and two or more sub-blocks are generated.

IPC Classes  ?

• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• H04N 19/124 - Quantisation
• G06T 9/00 - Image coding
• G06N 3/045 - Combinations of networks

Abstract

A method and a device for video encoding/decoding using an intra-block copy are disclosed. The method for decoding video data comprises the steps of: decoding encoding information about a chrominance block from a bit-stream; determining, on the basis of the encoding information, that the chrominance block is decoded using an intra-block copy; identifying a pre-decoded luminance block by using the intra-block copy within a luminance area corresponding to the chrominance block; deriving a block vector for the chrominance block on the basis of the block vector of the pre-decoded luminance block; and deriving a prediction block for the chrominance block on the basis of the block vector for the chrominance block.

IPC Classes  ?

• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/59 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
• H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/157 - Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/184 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction

Abstract

An image decoding method according to one embodiment of the present disclosure comprises the steps of: generating a first prediction block for the current block; generating a second prediction block for the current block or a sub-block within the current block; and generating a final prediction block of the current block or the sub-block through the weighted sum of the first prediction block and the second prediction block. Here, the prediction information used for generating the first prediction block can differ from the prediction information used for generating the second prediction block.

IPC Classes  ?

• H04N 19/86 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/513 - Processing of motion vectors
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking

Abstract

Disclosed are a device, method, and recording medium for performing prediction for a target block. An image decoding method may comprise the steps of: selecting whether to use a blended reference line; deriving the blended reference line; generating one or more samples of the blended reference line; and performing prediction for a target block using the blended reference line. The blended reference line can be generated as two or more reference lines around the target block are blended. Various methods can be used in order to derive the blended reference line and the samples of the blended reference line.

IPC Classes  ?

• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes

Abstract

Disclosed are a method, apparatus, and recording medium for image encoding/decoding using geometric partitioning. A target block is partitioned into a first partition region and a second partition region through geometric partitioning. Intra predictions are respectively used for the first partition region and the second partition region. A partition mode and a combination of two intra prediction modes are used for prediction of the target block. A prediction block for the target block is generated through prediction of the first partition region and prediction of the second partition region.

IPC Classes  ?

• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/513 - Processing of motion vectors
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction

Abstract

Disclosed are a method, device, and recording medium for image encoding/decoding. In a typical image encoding/decoding method, a decoder-side motion information derivation method may be used in a limited sense. Therefore, the improvement in encoding efficiency due to the decoder-side motion information derivation method may be limited. Disclosed are embodiments of motion information search methods used in an inter-prediction mode, an intra-block copy mode, and an intra-template matching prediction mode. Encoding efficiency may be improved as a result of using various motion search methods.

IPC Classes  ?

• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
• H04N 19/184 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
• H04N 19/56 - Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
• H04N 19/527 - Global motion vector estimation
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

Disclosed are an image encoding/decoding method, a device, and a recording medium for storing a bitstream. The image decoding method may comprise the steps of: constructing a candidate list related to the prediction of the current block; generating a prediction block of the current block on the basis of a candidate selected from the candidate list; and generating a reconstructed block of the current block on the basis of the prediction block, wherein the step for constructing a candidate list includes a step for adding a first candidate, which is a spatially adjacent block, a second candidate, which is a temporally adjacent block, and a third candidate, which is a non-adjacent block, to the candidate list in that order.

IPC Classes  ?

• H04N 19/513 - Processing of motion vectors
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks

Abstract

This specification discloses an image encoding/decoding method and apparatus, and a recording medium storing a bitstream. The image decrypting or decoding method comprises the steps of: configuring a candidate list related to prediction of a current block; generating a prediction block of the current block on the basis of a candidate selected from the candidate list; and generating a reconstructed block of the current block on the basis of the prediction block, wherein the step of configuring the candidate list may comprise the steps of: generating a candidate list for each of two or more types classified on the basis of at least one encoding parameter; and generating an integrated candidate list by adding, in a certain order, one or more candidates selected from the candidate list of each of the types, the encoding parameter may be a motion information derivation method, and the two or more types may include a first type of spatially neighboring block, a second type of temporally neighboring block, and a third type of non-neighboring block.

IPC Classes  ?

• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/56 - Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
• H04N 19/573 - Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock

Abstract

An embodiment of an operating method of a first device may comprise the steps of: receiving, from a second device, a first report setting configured to perform reporting of first channel state information (CSI); receiving, from the second device, a first medium access control (MAC) control element (CE) that configures one or more multiplexing modes for the first device in at least a first time resource; generating the first CSI on the basis of the first report setting and the first MAC CE; and transmitting the first CSI to the second device, wherein the first time resource configures a first CSI reference resource, configured by the first report setting.

IPC Classes  ?

• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 17/345 - Interference values
• H04W 24/10 - Scheduling measurement reports
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 72/56 - Allocation or scheduling criteria for wireless resources based on priority criteria
• H04W 84/06 - Airborne or Satellite Networks
• H04L 5/14 - Two-way operation using the same type of signal, i.e. duplex
• H04L 5/22 - Arrangements affording multiple use of the transmission path using time-division multiplexing
• H04W 84/04 - Large scale networks; Deep hierarchical networks
• H04B 17/318 - Received signal strength

Abstract

Disclosed are a method and device for direct communication in a wireless LAN supporting EMLSR. A method of a first STA comprises the steps of: generating a first frame including a first field including the address of a second STA that is a target of direction communication; transmitting the first frame to an AP; and transmitting a data frame to the second STA when it is determined that the second STA operates in an EMLSR operation state at the request of the AP, wherein the second STA is an EMLSR STA and operates in the EMLSR operation state or a listen operation state.

IPC Classes  ?

• H04W 76/14 - Direct-mode setup
• H04W 76/15 - Setup of multiple wireless link connections
• H04W 28/18 - Negotiating wireless communication parameters
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method and a device for transmitting or receiving a frame in a wireless LAN supporting EMLSR are disclosed. A method of a first STA comprises the steps of: transitioning the operation state of the first STA from a listening operation state to an EMLSR operation state by considering a TBTT of a first AP; receiving a beacon frame from the first AP in the EMLSR operation state; when the beacon frame indicates that a data unit to be transmitted to the first STA exists in the first AP, transmitting a PS-Poll frame to the first AP; and receiving a data frame including the data unit from the first AP in the EMLSR operation state.

IPC Classes  ?

• H04W 76/15 - Setup of multiple wireless link connections
• H04W 76/19 - Connection re-establishment
• H04W 52/02 - Power saving arrangements
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 84/12 - WLAN [Wireless Local Area Networks]
• H04W 72/30 - Resource management for broadcast services
• H04W 28/02 - Traffic management, e.g. flow control or congestion control

Abstract

A method, a device, and a recording medium for image encoding/decoding are disclosed. In embodiments, hidden vector movement and hidden vector compensation for image compression based on a neural network are described. Hidden vector movement is a method for improving the efficiency of entropy encoding by moving a component of a hidden vector which is difficult to estimate by a probability model of the hidden vector. Hidden vector compensation is a method for reducing image quality degradation of a reconstructed image by compensating for information lost by hidden vector movement. A reconstructed image having a higher image quality can be provided by hidden vector movement and hidden vector compensation.

IPC Classes  ?

• G06T 9/00 - Image coding
• H04N 19/124 - Quantisation
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
• H04N 19/184 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
• G06N 3/047 - Probabilistic or stochastic networks
• G06N 3/08 - Learning methods

Abstract

A method and a device for transmitting/receiving a control channel for sensitive traffic are disclosed. The method of a terminal comprises the steps of: receiving first DRX configuration information from a base station; confirming a first DRX active time and a first DRX inactive time on the basis of the first DRX configuration information; receiving a first downlink signal set from the base station in the first DRX active time; and receiving a second downlink signal set from the base station in the first DRX inactive time.

IPC Classes  ?

• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
• H04W 76/28 - Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• H04W 52/02 - Power saving arrangements
• H04W 24/10 - Scheduling measurement reports

Abstract

Disclosed are a method and apparatus for a measurement operation in a communication system. The method for a terminal comprises the steps of: receiving measurement configuration information from a base station; identifying a point in time of start of a measurement gap on the basis of the measurement configuration information; identifying the length of the measurement gap on the basis of the measurement configuration information; and performing a measurement operation in the measurement gap, wherein the measurement gap is configured in units of slots, the point in time of start of the measurement gap is a start slot, and the measurement gap includes one or more slots.

IPC Classes  ?

• H04W 24/10 - Scheduling measurement reports
• H04B 17/318 - Received signal strength
• H04W 84/06 - Airborne or Satellite Networks

Abstract

A method by which a first communication node operates in a communication system comprises the steps of: generating a first sequence and a second sequence; generating a first signal sequence on the basis of the first sequence and the second sequence; and transmitting a first signal generated by modulating the first signal sequence, wherein even-numbered elements and odd-numbered elements of the first signal sequence are classified into a first element group and a second element group, respectively, and any one of the first sequence and the second sequence can be mapped in ascending order in the first element group, and the other one thereof can be mapped in descending order in the second element group.

IPC Classes  ?

• H04L 27/26 - Systems using multi-frequency codes
• H04J 11/00 - Orthogonal multiplex systems
• H04J 13/00 - Code division multiplex systems
• H04W 56/00 - Synchronisation arrangements

Abstract

An audio signal processing apparatus and method are disclosed. The audio signal processing apparatus according to one embodiment comprises: a receiver for receiving a bitstream corresponding to a compressed audio signal; and a processor, which performs inverse quantization on real number data or complex number data of the bitstream so as to generate a real number reconstruction signal or a complex number reconstruction signal, performs real number frequency domain noise shaping (FDNS) synthesis on the real number reconstruction signal or the complex number reconstruction signal so as to generate real number FDNS synthesis results or complex number FDNS synthesis results, and performs frequency to time transform on the real number FDNS synthesis results or the complex number FDNS synthesis results so as to generate a reconstructed audio signal.

IPC Classes  ?

• G10L 19/04 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
• G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

Abstract

A method for operating a first communication node, in one embodiment of a communication system, comprises the steps of: generating a first binary sequence and a second binary sequence; generating, on the basis of the first and second binary sequences and a BPSK operation, a first intermediate sequence having 2N elements; generating, on the basis of an operation on the elements of the first intermediate sequence, a first signal sequence including N elements; mapping, to N subcarriers, first modulation symbols generated by modulating the first signal sequence; and transmitting a first signal including the mapped first modulation symbols, wherein the first and second binary sequences are generated on the basis of generator polynomials of which the maximum order is p+1, wherein p is a natural number and N can be a natural number having a value of 2p-1.

IPC Classes  ?

• H04J 11/00 - Orthogonal multiplex systems
• H04L 27/34 - Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• H04W 56/00 - Synchronisation arrangements

Abstract

The present invention relates to rail detection and mobile robot motion control that enable a mobile robot autonomously driving in a greenhouse environment, in which rails for pipe heating are present, to safely switch between driving in a flat area and driving in a rail area. According to the present invention, precise 3D point cloud data is obtained using a sensor or a laser scanner mounted on the mobile robot in order to enable more accurate rail detection, and this data is analyzed to detect the positions of the rails and control the motion of the mobile robot for rail docking.

IPC Classes  ?

• G06T 7/70 - Determining position or orientation of objects or cameras
• G06T 7/11 - Region-based segmentation
• G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
• G05D 1/02 - Control of position or course in two dimensions
• G01S 7/48 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group

Abstract

The present invention relates to an image encoding method based on the periodicity of a phase signal. The image encoding method comprises the steps of: generating a prediction signal for a current signal; decoding a differential signal from a bitstream; generating an initial restored signal on the basis of the prediction signal and the differential signal; and generating a restored signal converted so as to have a magnitude value within a preset range by converting a value of the initial restored signal, wherein the converted restored signal is generated on the basis of a period of a signal, and the preset range is a periodic range of the signal.

IPC Classes  ?

• G03H 1/08 - Synthesising holograms
• H04N 19/597 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
• H04N 19/147 - Data rate or code amount at the encoder output according to rate distortion criteria

Abstract

The present invention relates to a method for transmitting a synchronization signal block (SSB) through a plurality of satellites from a base station that can connect to a plurality of gateways, wherein the method may comprise the steps of: controlling transmission of first SSBs corresponding to the number of beams of each satellite through respective transmission beams in a first SSB cycle; determining a transmission beam of each of the satellites on the basis of a first measurement report for the respective beams received from a terminal; and controlling transmission of second SSBs for determining one combination including two or more gateways among the plurality of gateways in a second SSB cycle.

IPC Classes  ?

• H04B 7/185 - Space-based or airborne stations
• H04B 7/0413 - MIMO systems
• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04W 56/00 - Synchronisation arrangements
• H04W 84/06 - Airborne or Satellite Networks
• H04W 72/04 - Wireless resource allocation

Abstract

A method according to an embodiment of the present invention corresponds to a method for transmitting, by a gateway, a synchronization signal block (SSB) through a plurality of satellites, and may comprise the steps of: determining satellite identification SSBs for identifying a plurality of satellites, respectively; determining beam identification SSBs for identifying beams usable for the plurality of satellites, respectively; and controlling the satellite identification SSBs and the beam identification SSBs to be transmitted to the plurality of satellites, respectively, through a predetermined resource, wherein the satellite identification SSBs and each of the beam identification SSBs have different SSB indices from each other.

IPC Classes  ?

• H04B 7/185 - Space-based or airborne stations
• H04B 7/0408 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04W 56/00 - Synchronisation arrangements
• H04W 84/06 - Airborne or Satellite Networks

Abstract

A method and a device for configuring a reference signal for coverage extension are disclosed. A method of a terminal comprises the steps of: receiving, from a base station, DCI including information indicating whether PT-RS is mapped; identifying that the PT-RS is mapped to a data channel on the basis of the information; and performing a procedure of transmitting or receiving the data channel including the PT-RS to or from the base station.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/04 - Wireless resource allocation
• H04W 68/02 - Arrangements for increasing efficiency of notification or paging channel
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04L 1/08 - Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system

Abstract

A method, apparatus, and recording medium for image encoding/decoding are disclosed. In the method for image encoding/decoding, an intra-prediction mode for a target block is induced, and a reference sample for intra-prediction is generated. The intra-prediction for the target block is executed by using the induced intra-prediction mode and the generated reference sample. A machine learning-based intra-prediction mode inducing method may be used for inducing the intra-prediction mode. In the intra-prediction, machine learning-based prediction, prediction sample blending, prediction sample improvement, and prediction sample scaling may be used.

IPC Classes  ?

• H04N 19/513 - Processing of motion vectors
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• G06N 20/00 - Machine learning

Abstract

The present invention relates to a development of a discontinuous jump current breaker for cutting off, in an alternating current power system having an insulating material that exhibits a nonlinear electrical property between two electrodes, alternating current power by observing a discontinuous jump current in which an insulator-to-metal transition occurs. The discontinuous jump current breaker of the present invention comprises: a setting unit for setting the size of a discontinuous jump current; a sensor unit including a metal-conducting wire (Registration No. 10-1981640), which is parallel with an alternating current power conducting wire, is positioned at a separation distance d≥0, and measures electromagnetic waves of alternating current power; an amplifier unit for amplifying an analog signal of the metal-conducting wire; an analog-digital converter unit for converting the amplified analog signal into a digital signal; a microcontroller unit, which includes a memory including a program for driving the system; and a power cutoff unit for cutting off a discontinuous jump current.

IPC Classes  ?

• H02H 3/26 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltages or between currents
• H02H 3/00 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
• H01H 15/02 - Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch - Details
• G01R 29/08 - Measuring electromagnetic field characteristics
• G01R 19/252 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency

Abstract

The present invention relates to the development of a full electronic overcurrent breaker of which, by using a Kim-line current sensor which is not saturated at a high current (Korean patent No. 10-1981640), an overcurrent tripping time continuously decreases according to the increasing of the overcurrent, and then discontinuously decreases at a critical overcurrent. The full electronic overcurrent breaker (300) of the present invention comprises: a sensor unit (310); a sensor signal amplifier unit (320); a comparison unit (330) for comparing an amplified analog signal voltage with a reference voltage corresponding to a critical overcurrent; an analog-to-digital converter unit (340) for converting an analog signal into digital data; a CPU unit (350) for comparing and analyzing data, and emitting a control signal; a switch unit (380) for blocking an overcurrent; a power unit (395) for supplying power to the present electrical/electronic system; and a memory unit (360) for storing, in an internal memory, a program and a tripping time satisfying IEC International Standards. The full electronic overcurrent breaker (300) solves problems of conventional commercialized electronic overcurrent breakers, including (1) an overcurrent gap between a short time and an instantaneous time, (2) long time tripping at the upper bound of the short time, and (3) the complexity of a definite time setting switch.

IPC Classes  ?

• H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current
• H02H 1/00 - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS - Details of emergency protective circuit arrangements
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
• G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
• H03M 1/12 - Analogue/digital converters

Abstract

A technology for configuring a cell area in a communication system is disclosed. Provided may be an operation method of a first air transport device of a communication system, the method comprising the steps of: forming a cell in an aerial area; broadcasting first cell configuration information of the cell; receiving destination information from a second air transport device accessed on the basis of the first cell configuration information; changing a cell area on the basis of the destination information; and providing a communication service to the second air transport device by using the changed cell area.

IPC Classes  ?

• H04W 16/24 - Cell structures
• H04W 84/06 - Airborne or Satellite Networks

Abstract

An operation method of a first terminal performing sidelink communication may comprise the steps of: receiving resource coordination information from a second terminal; if the resource coordination information is information on preferred resource(s), selecting candidate resources to be used for transmission of the first terminal by preferentially considering the preferred resource(s); and if the resource coordination information is information on non-preferred resource(s), excluding the non-preferred resource(s) from the candidate resources to be used for transmission of the first terminal.

IPC Classes  ?

• H04W 72/02 - Selection of wireless resources by user or terminal
• H04W 72/06 - Wireless resource allocation based on ranking criteria of the wireless resources
• H04W 72/04 - Wireless resource allocation
• H04W 72/08 - Wireless resource allocation based on quality criteria
• H04W 28/26 - Resource reservation
• H04W 4/40 - Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
• H04W 92/18 - Interfaces between hierarchically similar devices between terminal devices

Abstract

A method and an apparatus for link establishment in a wireless LAN supporting EMLSR are disclosed. The method by a first device comprises the steps of: performing an operation of establishing a simultaneous reception standby link with a second device; when a first link and a second link are configured as the simultaneous reception standby link, performing a reception standby operation on the first link and the second link at the same time; receiving a control frame from the second device on the first link from among the first link and the second link; and receiving a data frame from the second device on the first link where the control frame was received.

IPC Classes  ?

• H04W 76/15 - Setup of multiple wireless link connections
• H04W 76/11 - Allocation or use of connection identifiers
• H04W 76/25 - Maintenance of established connections
• H04B 7/0413 - MIMO systems
• H04B 7/0404 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method for global localization of a mobile robot is disclosed. The method comprises: comparing a histogram value obtained by quantifying geometric and structural features of each query submap image divided from a global map image with a histogram value obtained by quantifying geometric and structural features of submap images stored in a database, so as to select a submap image which is most similar to a query submap image; and performing global localization of a mobile robot on the basis of coordinate information included in the selected submap image.

IPC Classes  ?

• G05D 1/02 - Control of position or course in two dimensions
• B25J 9/16 - Programme controls

Abstract

A method, a device and a recording medium for image encoding/decoding are disclosed. Provided in embodiments are a method, a device and a recording medium for efficiently lightening an in-loop filter and a predictive deep neural network in order to enhance encoding efficiency of an image and shorten the time required for encoding. Provided in embodiments is learning in a lightweight in-loop filter and a lightweight predictive deep neural network through knowledge distillation. According to embodiments, provided is a method for learning in an in-loop filter and a predictive deep neural network in order to enhance the efficiency and speed of image encoding and shorten the time required for encoding.

IPC Classes  ?

• H04N 19/82 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• G06T 9/00 - Image coding

Abstract

A method, apparatus, and recording medium for image encoding/decoding are disclosed. In a general image encoding/decoding method, a decoder-side motion information derivation method may be limitedly used. Accordingly, improvement in coding efficiency due to the decoder-side motion information derivation method may also be limited. A motion information search method used in inter prediction is disclosed in embodiments. Coding efficiency in inter prediction can be improved by using various motion search methods.

IPC Classes  ?

• H04N 19/57 - Motion estimation characterised by a search window with variable size or shape
• H04N 19/577 - Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/124 - Quantisation
• H04N 19/60 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
• H04N 19/513 - Processing of motion vectors

Abstract

Disclosed are a method, a device, and a recording medium for encoding/decoding an image. Prediction information for a target block is determined, and prediction of the target block is performed using the prediction information. Multiple bi-prediction methods can be used for the prediction, and the bi-prediction methods include neural network-based bi-prediction. A plurality of intermediate prediction blocks are used as inputs for neural network-based bi-prediction, and a final prediction block is outputted by neural network-based bi-prediction. Such neural network-based bi-prediction is performed on the basis of attributes and coding parameters, etc. of the target block.

IPC Classes  ?

• H04N 19/577 - Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
• G06T 9/00 - Image coding
• G06N 3/08 - Learning methods

Abstract

Disclosed are a method, apparatus, and recording medium for encoding/decoding an image by using geometric partitioning. A target block is partitioned into a first partition region and a second partition region through geometric partitioning. Intra prediction is used for at least one of the first partition region and the second partition region. An intra prediction mode of the intra prediction used for a partition region may be limited by a partition boundary and the like of a geometric partition mode. A prediction block for the target block is generated through prediction on the first partition region and prediction on the second partition region.

IPC Classes  ?

• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/513 - Processing of motion vectors
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/157 - Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction

Abstract

An operation method of a relay in a mobile communication system may comprise the steps of: receiving information relating to a backhaul reception beam and/or a backhaul transmission beam from a base station; receiving information relating to an access link transmission beam and/or an access link reception beam from the base station or obtaining information relating to an access link transmission beam and/or an access link reception beam from the information relating to the backhaul reception beam and/or backhaul transmission beam; communicating with the base station by using the backhaul reception beam and/or the backhaul transmission beam formed using the information relating to the backhaul reception beam and/or backhaul transmission beam; and communicating with a terminal by using the access link transmission beam and/or the access link reception beam formed using the information relating to the access link transmission beam and/or access link reception beam.

IPC Classes  ?

• H04W 16/26 - Cell enhancers, e.g. for tunnels or building shadow
• H04W 16/28 - Cell structures using beam steering
• H04B 7/155 - Ground-based stations
• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04B 7/08 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
• H04B 17/318 - Received signal strength
• H04B 17/373 - Predicting channel quality parameters

Abstract

Disclosed are a method and device for bidirectional communication in a wireless LAN. The method of a first STA comprises the steps of: receiving, from an AP, a first frame including an information element indicating TXOP sharing; confirming a shared TXOP duration on the basis of the first frame; and communicating with a second STA within the shared TXOP duration.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 28/02 - Traffic management, e.g. flow control or congestion control
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method and a device for image encoding/decoding and a recording medium are disclosed. Template matching is used for the prediction of a target block. Prediction information to be applied to the encoding of the target block is determined, and the target block using the determined prediction information is predicted. The prediction information includes a list and a plurality of candidates of the list. When forming the plurality of candidates of the list, template matching between blocks can be used. A candidate selected from among the plurality of candidates formed using the template matching is used for the prediction of the target block.

IPC Classes  ?

• H04N 19/157 - Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/139 - Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/124 - Quantisation
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes

Abstract

A method and apparatus for NSTR communication in a communication system supporting multiple links are disclosed. A method for a first device comprises the steps of: if a first backoff operation has succeeded on a first link belonging to a first pair of NSTR links on which an STR operation of a second device is not supported, transmitting a first data frame to the second device on the first link; performing a second backoff operation for transmission of a second data frame on a second link belonging to the first pair of NSTR links; if the second backoff operation has succeeded on the second link, identifying whether or not a transmission operation of the second device is performed on the first link belonging to the pair of NSTR links; and if the transmission operation is performed on the first link, transmitting the second data frame to the second device on the second link after completion of the transmission operation.

IPC Classes  ?

• H04W 28/04 - Error control
• H04W 76/15 - Setup of multiple wireless link connections
• H04W 76/11 - Allocation or use of connection identifiers
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method and a device for direct communication in a communication system supporting multiple links are disclosed. A method of an AP MLD comprises the steps of: transmitting a trigger frame in multiple links including a first link and a second link; receiving a response frame for the trigger frame from a first STA associated with an STA MLD in the first link; receiving a first data frame from a third STA in the second link; and when a subject to receive the first data frame is a second STA associated with the STA MLD, transmitting a second data frame generated on the basis of the first data frame, to the first STA in the first link.

IPC Classes  ?

• H04W 28/04 - Error control
• H04W 76/23 - Manipulation of direct-mode connections
• H04W 76/15 - Setup of multiple wireless link connections
• H04W 76/12 - Setup of transport tunnels
• H04W 76/14 - Direct-mode setup
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method and a device for shard communication in a wireless LAN are disclosed. A method of a first STA comprises the steps of: receiving a first frame for allocation of a shared communication period from an AP; identifying the shared communication period on the basis of one or more fields included in the first frame; and performing shared communication with a second STA in the shared communication period, wherein the shared communication period is configured within a TXOP configured between the AP and a third STA.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/04 - Wireless resource allocation
• H04W 28/04 - Error control
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method and a device for coherent communication are disclosed. An operating method of a terminal comprises the steps of: receiving, from a first TRP, an RRC message including information indicating the performance of reception operations for the first TRP and a second TRP; performing the reception operations for the first TRP and the second TRP to receive a common DL-RS; and allowing communication with the first TRP and/or the second TRP on the basis of the common DL-RS, wherein the common DL-RS is co-transmitted in the first TRP and the second TRP.

IPC Classes  ?

• H04L 25/02 - Baseband systems - Details
• H04W 56/00 - Synchronisation arrangements
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/04 - Wireless resource allocation
• H04L 27/26 - Systems using multi-frequency codes

Abstract

Provided is a method for supporting service continuity for UE, moving between a PLMN and an SNPN, by means of the steps of: receiving analysis information relating to UE, which is configured with a PDU session with an SNPN, from the NWDAF of a PLMN by means of non-3GPP access; determining that the UE will move from the PLMN to the SNPN on the basis of the analysis information; and instructing the UE to change the access for the SNPN PDU session from non-3GPP access to 3GPP access, on the basis of the determination.

IPC Classes  ?

• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/14 - Reselecting a network or an air interface
• H04W 36/32 - Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
• H04W 36/18 - Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
• H04W 84/10 - Small scale networks; Flat hierarchical networks
• H04W 84/04 - Large scale networks; Deep hierarchical networks

Abstract

A broadcast signal transmission device according to one embodiment of the present invention comprises: a bootstrap generation unit for generating a bootstrap, which signals a baseband sampling rate coefficient and a system bandwidth field corresponding to a system bandwidth for a post-bootstrap; a preamble generation unit for generating a preamble located immediately following the bootstrap on a broadcast signal frame; and a payload generation unit for generating one or more subframes located immediately following the preamble on the broadcast signal frame. The preamble includes L1 signaling data and the L1 signaling data can include a reduced carrier coefficient.

IPC Classes  ?

• H04N 21/2385 - Channel allocation; Bandwidth allocation
• H04N 21/236 - Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator ] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
• H04H 20/42 - Arrangements for resource management

Abstract

A solid electrolyte membrane comprises: a porous frame comprising a metal or polymer material; solid electrolyte particles that cover both sides of the porous frame and fill pores of the porous frame; and a binder between the solid electrolyte particles.

IPC Classes  ?

• H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
• H01M 10/0562 - Solid materials
• H01M 50/463 - Separators, membranes or diaphragms characterised by their shape
• H01M 10/052 - Li-accumulators

Abstract

Disclosed are a method and a device for transmission or reception of an integrated access backhaul node. An operation method of a first IAB node comprises the steps of: receiving information of a power offset from a second IAB node; deriving a first EPRE of a PDSCH transmitted by the second IAB node on the basis of the power offset; transmitting, to the second IAB node, a first message requesting adjustment of transmission power of the PDSCH; receiving, from the second IAB node, a second message including information on the adjusted transmission power of the PDSCH; and applying the adjusted transmission power to the first EPRE, so as to derive the adjusted EPRE of the PDSCH.

IPC Classes  ?

• H04W 72/04 - Wireless resource allocation
• H04W 52/24 - TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
• H04W 52/46 - TPC being performed in particular situations in multi-hop networks, e.g. wireless relay networks
• H04W 84/04 - Large scale networks; Deep hierarchical networks

Abstract

A resource management method carried out by an integrated access and backhaul (IAB) node in a communication system, according to one embodiment of the present invention, may comprise the steps of: receiving, from an upper-level node of an IAB node, a first upper layer signaling signal for resource configuration of the IAB node; receiving, from the upper-level node of the IAB node, a second upper layer signaling signal for resource configuration of the IAB node; and, on the basis of the first and second upper layer signaling signals, determining that an IAB-mobile terminal (IAB-MT) and an IAB-distributed unit (IAB-DU) constituting the IAB node carry out communication by being multiplexed by any one scheme among time division, frequency division and spatial division.

IPC Classes  ?

• H04W 72/04 - Wireless resource allocation
• H04W 84/04 - Large scale networks; Deep hierarchical networks
• H04W 92/20 - Interfaces between hierarchically similar devices between access points

Abstract

A method and a device for supporting multicast transmission are disclosed. A terminal operating method comprises the steps of: receiving, from a base station, an RRC message indicating the activation of HARQ-ACK feedback; receiving, from the base station, a first DCI including information indicating deactivation of the HARQ-ACK feedback; receiving, from the base station, a first multicast PDSCH on the basis of first scheduling information included in the first DCI; generating a first HARQ-ACK bit for the first multicast PDSCH even if the first DCI indicates deactivation of the HARQ-ACK feedback; generating a HARQ codebook including the first HARQ-ACK bit; and transmitting, to the base station, the HARQ codebook through an uplink channel.

IPC Classes  ?

• H04W 72/12 - Wireless traffic scheduling
• H04W 72/04 - Wireless resource allocation
• H04L 1/18 - Automatic repetition systems, e.g. Van Duuren systems
• H04W 4/06 - Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Abstract

Disclosed are a method and device for communication using a fronthaul interface. According to the present invention, an operation method of an O-RU comprises the steps of: generating a plurality of first measurement results by performing measurement operations on a first measurement target in a single notification period according to a notification interval; generating a first measurement result list including the plurality of first measurement results; and transmitting, to an O-DU, a message including the first measurement result list.

IPC Classes  ?

• H04W 24/02 - Arrangements for optimising operational condition
• H04W 24/10 - Scheduling measurement reports
• H04W 88/08 - Access point devices
• H04W 80/00 - Wireless network protocols or protocol adaptations to wireless operation
• H04W 92/00 - Interfaces specially adapted for wireless communication networks

Abstract

Disclosed are a relay method and device in a communication system. An operation method of a first communication node comprises the steps of: transmitting a reference signal to one or more candidate R nodes; receiving first feedback information including a minimum value of a first RSRP from a first candidate R node belonging to the one or more candidate R nodes; receiving second feedback information including a minimum value of a second RSRP from a second candidate R node belonging to the one or more candidate R nodes; comparing a first value based on the first feedback information with a second value based on the second feedback information; when the first value is greater than the second value, selecting the first candidate R node as an R node that is to perform a relaying operation; and communicating with a second communication node via the R node.

IPC Classes  ?

• H04W 40/22 - Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
• H04W 40/12 - Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
• H04W 72/08 - Wireless resource allocation based on quality criteria
• H04W 84/04 - Large scale networks; Deep hierarchical networks
• H04W 92/20 - Interfaces between hierarchically similar devices between access points

Abstract

A method for operation of a terminal for monitoring a downlink control channel comprises the steps of: receiving configuration information of a first SSSG and a second SSSG from a base station; monitoring the first SSSG in a first period; and monitoring the second SSSG in a second period. DCI including an indication for switching a target to be monitored from the first SSSG to the second SSSG in a period before the second period may be received from the base station.

IPC Classes  ?

• H04W 52/02 - Power saving arrangements
• H04W 72/12 - Wireless traffic scheduling
• H04W 76/28 - Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

Disclosed is a connection method for a connectionless communication node in wireless LAN. An operating method of an AP comprises the steps of: transmitting a first frame to discover an STA; receiving, from one or more STAs, in response to the first frame, a second frame indicating that the STA exists; and transmitting, to the one or more STAs, a third frame including resource allocation information.

IPC Classes  ?

• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04L 27/26 - Systems using multi-frequency codes
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

A method, an apparatus, and a recording medium for encoding/decoding an image by using geometric partitioning are disclosed. Partitioning of a block may be determined using the directionality within the block. A straight line is detected within the block, some of partitioning schemes available for the block are excluded according to a type of the detected straight line, and a selection target for encoding and/or decoding of a target block is limited to only some other parts. Also, a mode may be determined as a geometric partitioning mode by using the directionality in the block. A straight line is detected within the block, some of available modes of geometric partitioning modes are excluded according to a type of the detected straight line, and a selection target for encoding and/or decoding of the target block is limited to only some other parts.

IPC Classes  ?

• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/597 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/513 - Processing of motion vectors
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/593 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
• H04N 19/124 - Quantisation
• H04N 19/13 - Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]

Abstract

Disclosed are a method and a device for signal transmission or reception using aggregated carriers. An operation method of a terminal comprises the steps of: receiving configuration information of multiple cells from a base station; receiving configuration information of a first search space set, which is configured in a first cell among the multiple cells and for scheduling of the first cell, from the base station; and receiving configuration information of a second search space set, which is configured in a second cell among the multiple cells and for scheduling of the first cell, from the base station.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 72/04 - Wireless resource allocation
• H04W 72/12 - Wireless traffic scheduling
• H04B 17/373 - Predicting channel quality parameters
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04J 11/00 - Orthogonal multiplex systems

Abstract

Disclosed are an apparatus and method for audio encoding/decoding robust to transition segment encoding distortion. The method for audio encoding may comprise the steps of: outputting a frequency domain signal by performing time-to-frequency (T/F) conversion on an input signal; outputting a frequency domain residual signal obtained by removing a frequency axis envelope from the frequency domain signal, by applying frequency domain noise shaping (FDNS) encoding to the frequency domain signal; outputting a time domain residual signal obtained by removing a time axis envelope, by performing linear prediction coefficient (LPC) analysis on the basis of the frequency domain residual signal; and quantizing and transmitting the time domain residual signal.

IPC Classes  ?

• G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
• G10L 19/005 - Correction of errors induced by the transmission channel, if related to the coding algorithm
• G10L 19/16 - Vocoder architecture

Abstract

A MOS-controlled thyristor element according to the concept of the present invention comprises a substrate comprising first and second surfaces facing each other, gate patterns disposed on the first surface, a cathode electrode covering the gate patterns, and an anode electrode disposed on the second surface. The substrate comprises a lower emitter layer having a first conductive type, a lower base layer disposed on the lower emitter layer so as to have a second conductive type, an upper base area provided on the upper portion of the lower base layer so as to have a first conductive type, the upper base area exposing a part of the upper surface of the lower base layer, an upper emitter area provided on the upper portion of the upper base area so as to have a second conductive type, a first doping area provided on the upper portion of the upper emitter area so as to have a first conductive type, a second doping area surrounded from the first doping area so as to have a second conductive type, and a first doping pattern provided on a side surface of the upper portion of the upper emitter area so as to have a first conductive type. The first doping pattern is interposed between the upper base area and the first doping area along a first direction parallel to the upper surface of the substrate. The first doping pattern exposes the upper surface of the upper emitter area from another side surface of the upper portion of the upper emitter area. Each of the gate patterns covers the exposed upper surface of the lower base layer, the exposed upper surface of the upper base area, the exposed upper surface of the upper emitter area, the first doping pattern, and a part of the first doping area. The cathode electrode covers the upper and side surfaces of the gate pattern, the upper surface of the second doping area, and a part of the upper surface of the first doping area. The first conductive type and the second conductive type differ from each other.

IPC Classes  ?

• H01L 29/749 - Thyristor-type devices, e.g. having four-zone regenerative action with turn-on by field effect
• H01L 29/745 - Gate-turn-off devices with turn-off by field effect
• H01L 29/66 - Types of semiconductor device
• H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes

Abstract

Disclosed are a method and device for direct communication in a wireless LAN. An operation method of a first device comprises the steps of: transmitting a first frame, which is for setting up a direct communication link, to a second device over one or more links among multiple links; receiving a second frame, which is a response to the first frame, from the second device over the one or more links; and directly communicating with one or more peer devices over the direct communication link when the second frame is received.

IPC Classes  ?

• H04W 76/14 - Direct-mode setup
• H04W 76/15 - Setup of multiple wireless link connections
• H04W 28/18 - Negotiating wireless communication parameters
• H04W 88/04 - Terminal devices adapted for relaying to or from another terminal or user
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

Disclosed are a method and apparatus for transmitting and receiving data in a communication system supporting multiple links. A method for operation of a first device comprises the steps of: transmitting, in a first link from among multiple links, a first RTS frame to a second device; receiving, from the second device in the first link, a first CTS frame that is a response to the first RTS frame; when the first CTS frame is received, transmitting, in the first link, a first data frame to the second device; and transmitting, in a second link during transmission of the first data frame, a second RTS frame to the second device.

IPC Classes  ?

• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 76/15 - Setup of multiple wireless link connections
• H04W 84/12 - WLAN [Wireless Local Area Networks]
• H04L 29/06 - Communication control; Communication processing characterised by a protocol

Abstract

Disclosed are a method and an apparatus for a URLLC in an unlicensed band. An operation method of a terminal comprises the steps of: receiving, from a base station, first configuration information of first FFPs for channel access of the terminal and second configuration information of second FFPs for channel access of the base station; initiating a first COT in at least one first FFP among the first FFPs indicated by the first configuration information; and determining, according to a pre-defined rule, one COT between the first COT and a second COT which is initiated by the base station in at least one second FFP among the second FFPs.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 72/04 - Wireless resource allocation
• H04W 72/12 - Wireless traffic scheduling
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received

Abstract

An instant message transmission method performed by a terminal may comprise the steps of: receiving, from a base station, configuration information related to transmission of an instant message; if an instant message has been generated, determining whether or not the transmission of the instant message is allowed; and if the transmission of the instant message is allowed, transmitting the instant message by using a random access (RA) procedure or one or more pre-allocated uplink resources (PURs).

IPC Classes  ?

• H04W 72/04 - Wireless resource allocation
• H04W 72/12 - Wireless traffic scheduling
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]

Abstract

A muscle control device according to an embodiment of the present disclosure comprises: a plurality of electrodes; an electromyography (EMG) electrode unit which senses EMG signals; an EMG circuit unit which generates channel data on the basis of electrode signals received from the EMG electrode unit; a control unit which receives the channel data from the EMG circuit unit, extracts volitional EMG signals on the basis of the channel data, and determines functional electrical stimulation (FES) variables on the basis of the volitional EMG signals; an FES electrode unit which outputs FES on the basis of the FES variables; and an FES circuit unit which receives the FES variables from the control unit, generates the FES on the basis of the FES variables, and transmits the FES to the FES electrode unit, wherein the control unit identifies the direction and strength of an operation from the volitional EMG signals on the basis of the volitional EMG signals, and adjusts the intensity of the FES.

IPC Classes  ?

• A61N 1/36 - Applying electric currents by contact electrodes alternating or intermittent currents for stimulation, e.g. heart pace-makers
• A61B 5/389 - Electromyography [EMG]
• A61N 1/04 - Electrodes
• A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
• A61N 1/02 - Electrotherapy; Circuits therefor - Details

Abstract

A method and an apparatus for STR in a wireless LAN that supports multi-links are disclosed. An operating method of a first communication node comprises the steps of: transmitting a first frame to a second communication node through a first link from among multi-links; receiving, from the second communication node, a response frame for the first frame through the first link; checking a channel occupancy time in a second link from among the multi-links on the basis of first information included in the response frame; and performing a sensing operation in a preset section after the end of the channel occupancy time in the second link.

IPC Classes  ?

• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 74/00 - Wireless channel access, e.g. scheduled or random access
• H04W 28/16 - Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• H04W 76/15 - Setup of multiple wireless link connections
• H04L 29/06 - Communication control; Communication processing characterised by a protocol
• H04W 84/12 - WLAN [Wireless Local Area Networks]

Abstract

An image encoding/decoding method and device are provided. An image decoding method according to the present disclosure comprises the steps of: decoding information about the number of slices in a tile for indicating the number of the plurality of slices included in the current tile when the current picture is composed of a plurality of tiles and the current tile from among the plurality of tiles is divided into the plurality of slices; decoding information about the height of the slices in the tile for indicating the height of the plurality of slices included in the current tile; and determining the number of the plurality of slices included in the current tile and the height of the plurality of slices included in the current tile.

IPC Classes  ?

• H04N 19/103 - Selection of coding mode or of prediction mode
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock

Abstract

A method and a device for encoding/decoding an image by using a palette mode, and a recording medium are disclosed. A prediction using a palette mode with respect to a block to be predicted can be performed. Various types of predictions can be performed with respect to the block to be predicted, and pieces of information to be signaled from an encoding device to a decoding device can change according to the type of prediction to be performed for the block. A determination of the signaled pieces of information is optimized for when a palette mode is used with respect to the block, so that the encoding and decoding efficiency of an image can be improved.

IPC Classes  ?

• H04N 19/11 - Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
• H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

The present invention relates to a decoding method, decoding apparatus, encoding method, and encoding apparatus for a video, and provides a method and an apparatus for performing region-based differential image encoding/decoding by using a restored image. According to an encoding method of an embodiment, encoding is performed on an original image to generate a restored low-quality image, and a restored high-quality image is generated using the restored low-quality image. An image is segmented into a plurality of regions and encoding is performed on each of the regions to generate encoded reconstruction information for generation of a reconstructed high-quality image.

IPC Classes  ?

• H04N 19/85 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
• H04N 19/147 - Data rate or code amount at the encoder output according to rate distortion criteria
• H04N 19/19 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding using optimisation based on Lagrange multipliers
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

Provided in the present disclosure is a video decoding method comprising the steps of: acquiring a transform skip mode flag indicating whether or not a transform skip mode is applied to a current block; when the transform skip mode is applied to the current block according to the transform skip mode flag, determining that a secondary transform/inverse transform is not applied to the current block; and, when the transform skip mode is not applied to the current block according to the transform skip mode flag, acquiring a transform matrix index of the current block for the secondary transform/inverse transform and determining, according to the transform matrix index, whether or not the secondary transform/inverse transform is applied to the current block.

IPC Classes  ?

• H04N 19/62 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding by frequency transforming in three dimensions
• H04N 19/136 - Incoming video signal characteristics or properties
• H04N 19/103 - Selection of coding mode or of prediction mode
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/132 - Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
• H04N 19/61 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
• H04N 19/109 - Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock

Abstract

An image encoding/decoding method and apparatus is provided. An image decoding method according to the present disclosure may comprise the steps of: acquiring a partitioning index of a current block from a bitstream; and performing a weighted summation of a prediction sample of a first subblock of the current block and a prediction sample of a second subblock of the current block, on the basis of the partitioning index, to generate a prediction sample of the current block, wherein the partitioning index indicates a partitioning distance and a partitioning direction included in a predefined table.

IPC Classes  ?

• H04N 19/597 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
• H04N 19/159 - Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/186 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component

Abstract

A broadcast signal transmission device according to one embodiment of the present invention comprises: a bootstrap generation unit for generating a bootstrap for signaling a baseband sampling rate coefficient and a system bandwidth field corresponding to a system bandwidth for a post-bootstrap; a preamble generation unit for generating a preamble located immediately following the bootstrap on a broadcast signal frame; and a payload generation unit for generating one or more subframes located immediately following the preamble on the broadcast signal frame.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04N 21/438 - Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
• H04L 27/26 - Systems using multi-frequency codes

Abstract

The present invention relates to an image decoding method, and an image decoding method according to one embodiment of the present invention comprises the steps of: acquiring a reconstructed luma block of the current block; determining whether to apply a cross-component adaptive loop filter to the current block; acquiring a reconstructed chroma block of the current block to which the adaptive loop filter has been applied, if the cross-component adaptive loop filter is to be applied to the current block; and using the reconstructed luma block and the reconstructed chroma block to which the adaptive loop filter has been applied to acquire the final reconstructed chroma block of the current block to which the cross-component adaptive loop filter has been applied.

IPC Classes  ?

• H04N 19/117 - Filters, e.g. for pre-processing or post-processing
• H04N 19/82 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
• H04N 19/119 - Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
• H04N 19/176 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
• H04N 19/70 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

Disclosed are a video processing method and device using the resolution of a reference picture, and a recording medium. Filtering is performed on the basis of resolutions of reference pictures of blocks which form a boundary. The resolutions of the reference pictures may define filtering. One or more filter selection parameters for filtering may be determined or updated on the basis of whether the resolutions of the reference pictures are different from each other. In addition, a boundary strength of a filter may be determined on the basis of whether the resolutions of the reference pictures are different from each other. Filtering is defined using resolutions of reference pictures, and thus encoding and/or decoding performance can be enhanced.

IPC Classes  ?

• H04N 19/105 - Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• H04N 19/61 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
• H04N 19/129 - Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
• H04N 19/86 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
• H04N 19/82 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
• H04N 19/423 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements

Abstract

A spectrometry apparatus according to one embodiment of the present invention comprises: a laser emission device, which receives orthogonal codes including a series of bits respectively having a first value and a second value, generates a control signal having a pulse, of a width shorter than that of a bit section, in the bit section corresponding to the bit having the first value from among a series of bits, generates, through a trigger, a pulse laser beam, of a width shorter than that of the bit section, from the pulse included in the control signal, and emits, at a sample, an incident beam including the generated pulse laser beam; and a detector, which receives a detection signal and the orthogonal codes generated from the sample at which the incident beam is emitted, generates, on the basis of the orthogonal codes, an orthogonal code signal having a waveform that is the same as that of the incident beam, and demodulates a Raman signal on the basis of the correlation between the generated orthogonal code signal and the Raman signal included in the detection signal.

IPC Classes  ?

• G01N 21/65 - Raman scattering
• G01N 21/01 - Arrangements or apparatus for facilitating the optical investigation
• G01N 33/48 - Biological material, e.g. blood, urine; Haemocytometers

Abstract

An embodiment discloses an artificial intelligence inference apparatus and method. An embodiment is an artificial intelligence inference method. The artificial intelligence inference method may comprise the steps: converting a trained neural network and parameters into an execution code of a high-level language independent of a learning framework; separating the execution code into a general purpose language (GPL) code and a domain specific language (DSL) code according to whether or not an acceleration operation is needed; and generating the separated GPL code and DSL code as a target code optimized for hardware.

IPC Classes  ?

• G06N 3/063 - Physical realisation, i.e. hardware implementation of neural networks, neurons or parts of neurons using electronic means
• G06N 3/08 - Learning methods
• G06N 5/04 - Inference or reasoning models