Abrégé

A battery-powered node within a wireless mesh network performs energy-aware packet routing based on multiple factors. The battery powered node computes, for a given link to an adjacent node, the energy needed to transmit a packet to the adjacent node. The battery-powered node also determines the amount of battery energy remaining in the adjacent node. Based on these two factors, the battery powered node computes a link cost associated with the link to the adjacent node. The battery-powered node performs a similar computation for all adjacent nodes and then forwards packets via these adjacent nodes based on the associated link costs. The battery-powered node also maintains a table of routes through adjacent nodes, and reroutes packets through different adjacent nodes in response to link failures.

Classes IPC  ?

• H04W 40/10 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court sur la base des ressources nodales sans fil sur la base de la puissance ou de l'énergie disponible
• H04W 40/22 - Sélection d'itinéraire ou de voie de communication, p.ex. routage basé sur l'énergie disponible ou le chemin le plus court utilisant la retransmission sélective en vue d'atteindre une station émettrice-réceptrice de base [BTS Base Transceiver Station] ou un point d'accès

Abrégé

A battery powered node within a wireless mesh network maintains a mapping between temperature and oscillator drift and compensates for oscillator drift based on this mapping. When the mapping includes insufficient data points to map the current temperature to an oscillator drift value, the battery powered node requests calibration packets from an adjacent upstream node in the network. The adjacent node transmits two calibration packets with a transmit time delta and also indicates this time delta in the first calibration packet. The battery powered node receives the two calibration packets and measures the receive time delta. The battery powered node compares the transmit time delta to the receive time delta to determine oscillator drift compared to an oscillator in the adjacent node. The battery powered node then updates the mapping based on the current temperature and determined oscillator drift.

Classes IPC  ?

• H04J 3/06 - Dispositions de synchronisation
• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p.ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseau; Circuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p.ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
• G08C 15/00 - Dispositions caractérisées par l'utilisation du multiplexage pour la transmission de plusieurs signaux par une voie commune
• G08C 19/16 - Systèmes de transmission de signaux électriques dans lesquels la transmission est par impulsions
• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison

Abrégé

A wireless communication system includes a first wireless network having first nodes each assigned a unique first address, a second wireless network having second nodes each assigned a unique second address, a border router node constituting an interface between the second network and a third wireless network, and at least one access point constituting an interface between the first and third networks. At least one of the first nodes is a mesh router node in the first network and a border router node in the second network (MR/BR node). The MR/BR node has unique addresses respectively assigned in the first and second networks. The MR/BR node receives a communication in the first network and transmits it to at least one second node in the second network. The MR/BR node receives a communication in the second network and transmits it to at least one first node in the first network.

Classes IPC  ?

• H04L 12/28 - Réseaux de données à commutation caractérisés par la configuration des liaisons, p.ex. réseaux locaux [LAN Local Area Networks] ou réseaux étendus [WAN Wide Area Networks]
• H04W 4/00 - Services spécialement adaptés aux réseaux de télécommunications sans fil; Leurs installations
• H04W 80/00 - Protocoles de réseaux sans fil ou adaptations de protocoles à un fonctionnement sans fil

Abrégé

A central controller is configured to obtain a scan of a quick response (QR) code affixed to an internet-of-things (IoT) device. The central controller decodes the QR code to extract various operating parameters associated with the IoT device. The central controller then provisions a device controller for coordinating operation of the IoT device. The central controller configures the device controller based on the operating parameters, thereby allowing the device controller to coordinate operations of the IoT device in a device-specific manner. The central controller may then install the device controller on the IoT device, or cause the device controller to coordinate IoT device operations across a network. With this approach, a technician is no longer required to manually obtain IoT device operating parameters or input those parameters to a central controller, thereby streamlining the IoT device installation process.

Classes IPC  ?

• H04W 4/00 - Services spécialement adaptés aux réseaux de télécommunications sans fil; Leurs installations

Abrégé

A wireless mesh network includes a mesh of continuously-powered devices (CPDs) and a mesh of battery-powered devices (BPDs). The BPDs are organized into hop layers based on hopping distance to the mesh of CPDs. The CPDs transmit time beacons to BPDs in a first hop layer during a first receive window associated with the first hop layer. The BPDs in the first hop layer then transmit time beacons to BPDs in a second hop layer during a second receive window. In this manner, the wireless mesh network propagates time values throughout the BPD mesh. Based on these time values, the BPDs power on during short time intervals to exchange data with neighboring BPDs, and then power off for longer time intervals, thereby conserving battery power. The techniques described herein for conserving battery power for BPDs may also be applied to conserve power consumption of CPDs.

Classes IPC  ?

• H04J 3/06 - Dispositions de synchronisation
• H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection
• H04W 52/02 - Dispositions d'économie de puissance
• H04W 56/00 - Dispositions de synchronisation
• H04W 84/12 - Réseaux locaux sans fil [WLAN Wireless Local Area Network]

Abrégé

A wireless mesh network includes a mesh of continuously-powered devices (CPDs) and a mesh of battery-powered devices (BPDs). The BPDs are organized into hop layers based on hopping distance to the mesh of CPDs. In a medium latency communication mode, a given BPD receives data during a receive window that is scheduled to occur within either the first half of a communication window or the second half of the communication window, depending on the parity of the hop layer where the BPD resides. With this approach, a data packet can traverse one hop of the BPD mesh per communication window. In a low-latency communication mode, a given BPD receives and transmits data according to an alternating pattern that depends on the parity of the hop layer where the node resides. With this technique, a data packet can traverse multiple hops of the BPD mesh within a single communication window. These techniques also are applicable to CPDs and other types of nodes as well.

Classes IPC  ?

• H04B 7/212 - Accès multiple par répartition dans le temps
• H04J 3/06 - Dispositions de synchronisation
• H04W 72/04 - Affectation de ressources sans fil
• H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection