Access nodes and methods adjust a bit rate of a data stream in a communication network. The access nodes and methods have a packet inspection unit configured to inspect one or more of the data packets to determine that the data stream includes video data. A congestion unit is coupled to the packet inspection unit and is configured to determine a level of congestion in the communication network, the level of congestion associated with a capacity of the wireless channel, the level of congestion capable of varying over time, and the capacity of the wireless channel capable of varying with the level of congestion. A video scaling unit is configured to adjust the bit rate of the data stream responsive to the packet inspection unit and the congestion unit.
H04N 21/61 - Network physical structure; Signal processing
H04N 21/2343 - Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
H04N 21/414 - Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
H04N 21/647 - Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load or bridging bet
A method for managing congestion in a communications channel in a communication network is provided. The communication channel carries a plurality of data streams, each of the data streams including data packets. It is determined whether one or more of the data streams includes video data, and an overall demand associated with the data streams is determined. If a change is detected in the congestion level of the communication channel and one or more of the data streams includes video data and the determined congestion level is above a predetermined congestion level, the bit rate of the video data in the data streams is adjusted so that the data packets of the data streams can be transferred over the communication channel in accordance with the capacity of the communication channel. The determined congestion level includes whether the overall demand of the data streams exceeds capacity of the communication channel.
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. (Taiwan, Province of China)
Inventor
Sterman, Baruch
Efrati, Tzahi
Trabelsi, Yariv
Abstract
When a mobile telephony device is conducting a voice over Internet protocol (VOIP) telephone call via a data network, and the mobile telephone device transitions from a first wireless data connection to a second wireless data connection, signaling between the mobile telephone device and a media relay inform the media relay how to address data packets bearing the media of the call after the transition has occurred. In some embodiments, the mobile telephone device establishes multiple simultaneous wireless data connections, and the mobile telephony device switches the media of the call between the wireless data connections depending on the quality of the wireless data connections.
Systems and methods preserve application identification information on handover in a communication network. End user quality of experience is improved by determining applications associated with communications to and from the end user. The applications may include application classes and specific applications. The application information is used to schedule packets such that the end user quality of experience is improved for that application. When the end user is handed over between wireless access nodes, the access nodes transfer application information so that the improved end user quality of experience is maintained.
Capacity and spectrum constrained, multiple-access communication systems optimize performance by selectively discarding packets. Changes in the communication systems may be driven using control responses. Control responses include intelligent discard of network packets under capacity constrained conditions. Packets are prioritized and discard decisions are made based on the prioritization. Various embodiments provide an interactive response by selectively discarding packets to enhance perceived and actual system throughput, provide a reactive response by selectively discarding data packets based on their relative impact to service quality to mitigate oversubscription, provide a proactive response by discarding packets based on predicted oversubscription, or provide a combination thereof. Packets may be prioritized for discard using correlations between discards and bandwidth reduction and quality degradation. The quality degradation for video packets may be measured objectively.
H04N 21/23 - Processing of content or additional data; Elementary server operations; Server middleware
H04L 41/5022 - Ensuring fulfilment of SLA by giving priorities, e.g. assigning classes of service
H04L 47/2408 - Traffic characterised by specific attributes, e.g. priority or QoS for supporting different services, e.g. a differentiated services [DiffServ] type of service
H04N 19/61 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
H04L 41/50 - Network service management, e.g. ensuring proper service fulfilment according to agreements
6.
SYSTEMS AND METHODS FOR DETECTION FOR PRIORITIZING AND SCHEDULING PACKETS IN A COMMUNICATION NETWORK
Systems and methods provide a parameterized scheduling system that incorporates end-user application awareness and can be used with scheduling groups that contain data streams from heterogeneous applications. Data packets are analyzed at multiple protocol levels to detect characteristics associated with communicating the packets. The data packets are filtered so that detecting the characteristics is efficiently performed. The detected characteristics can be used for scheduling transmission of the packets. The detected characteristics can be used to dynamically change scheduling parameters. The dynamic scheduling parameters can maximize user Quality of Experience (QoE) in response to recurring network patterns, one-time events, application characteristics, protocol characteristics, device characteristics, service level agreements, or combinations thereof. Scheduling parameters may also incorporate notions of "duration neglect" and "recency effect" in an end-user's perception of video quality in order to manage video traffic during periods of congestion.
Systems and methods for optimizing system performance of capacity and spectrum constrained, multiple-access communication systems by selectively discarding packets are provided. The systems and methods provided herein can drive changes in the communication system using control responses. One such control responses includes the optimal discard (also referred to herein as "intelligent discard") of network packets under capacity constrained conditions. Some embodiments provide an interactive response by selectively discarding packets to enhance perceived and actual system throughput, other embodiments provide a reactive response by selectively discarding data packets based on their relative impact to service quality to mitigate oversubscription, others provide a proactive response by discarding packets based on predicted oversubscription, and others provide a combination thereof.
H04N 21/25 - Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication or learning user preferences for recommending movies
H04W 24/02 - Arrangements for optimising operational condition
H04N 21/24 - Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth or upstream requests
H04N 19/37 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability with arrangements for assigning different transmission priorities to video input data or to video coded data
H04L 41/5022 - Ensuring fulfilment of SLA by giving priorities, e.g. assigning classes of service
H04L 47/24 - Traffic characterised by specific attributes, e.g. priority or QoS
Systems and methods for optimizing system performance of capacity and spectrum constrained, multiple-access communication systems by selectively discarding packets are provided. The systems and methods provided herein can drive changes in the communication system using control responses. One such control responses includes the optimal discard (also referred to herein as "intelligent discard") of network packets under capacity constrained conditions. The systems and methods prioritize packets and make discard decisions based upon the prioritization. Some embodiments provide an interactive response by selectively discarding packets to enhance perceived and actual system throughput, other embodiments provide a reactive response by selectively discarding data packets based on their relative impact to service quality to mitigate oversubscription, others provide a proactive response by discarding packets based on predicted oversubscription, and others provide a combination thereof.
H04L 47/2425 - Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
H04L 47/2441 - Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
H04L 47/32 - Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
H04L 47/2408 - Traffic characterised by specific attributes, e.g. priority or QoS for supporting different services, e.g. a differentiated services [DiffServ] type of service
9.
SYSTEM AND METHOD FOR DISPLAYING DATA ON A THIN CLIENT
A thin-client user interface includes a user interface and an application server. The user interface is executed on a client device, such as a personal computer having a display. The user includes a client application for displaying data. The application server is coupled with the user interface and with a remote database via an electronic data network and is configured to receive a request for data from the user interface, to generate a query request based on the request for data, to access the database and submit the query request to the database, to receive results from the database in response to the query request, and transmit a portiont of the results to the user interface (Figure 2).
10.
METHOD AND APPARATUS FOR POWER SAVING IN WIRELESS SYSTEMS
A method is provided for carrying out a power saving procedure in a wireless subscriber terminal which is operative to receive at least two different services, each of which is characterized by one or more characteristics related to traffic demands associated with that service. The method comprises the following steps: classifying each of the at least two different services based on their traffic demand related characteristics into corresponding power saving classes, where there are at least two different power saving classes associated with the at least two different services; for each of the power saving classes, determining required listening windows and required sleep windows; exchanging messages between the base station and the subscriber's device for synchronizing parameters for carrying out the power saving procedure.