# US 2014/0153552 A1 · Communication method, transceiver stations and associated computer programs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153552 A1 - Document ID: US20140153552A1 - Status: Published application - Kind: A1 - Application number: 14/088,953 - Filed: 2013-11-25 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: Schneider Electric Industries SAS - Applicants: Schneider Electric Industries SAS - Inventors: Philippe NUCCI - Web page: https://patentgrep.com/patent/US20140153552A1 ## CPC - H04W 52/0209: {in terminal devices} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 74/0816: with collision avoidance - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 84/20: Leader-follower arrangements - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The invention relates to a method for communicating over a radiofrequency channel in a network including a primary node and multiple secondary nodes (10) for telecommunications. The communication method comprises the following steps: reception by a secondary node (10) on the radiofrequency channel of beacon messages (16) sent by nodes in its radio neighborhood, each indicating a number of radio hops separating the primary node from said node (10) of the radio neighborhood having sent the message; selection by said secondary node (10), called child node, of the node from the wireless neighborhood having sent the beacon message (16) indicating a minimum number of hops as the parent node; in order to send information (19) to the primary node, transmission of said information (19) over the radiofrequency channel to said parent node thus selected. ## Claims ### Claim 1 A communication method, over a radiofrequency channel in a network including a primary node and multiple secondary nodes for telecommunications, comprising the following steps: reception by a secondary node on the radiofrequency channel of beacon messages sent by the nodes in its radio neighborhood, each indicating a number of radio hops separating the primary node from said node of the radio neighborhood having sent the message; selection by said secondary node, called child node, of the node from the wireless neighborhood having sent the beacon message indicating a minimum number of hops as the parent node; in order to send information to the primary node, transmission of said information (over the radiofrequency channel to said parent node thus selected. ### Claim 2 (depends on 1) The communication method according to claim 1, wherein, in order to send information to the primary node, said information is emitted by said secondary node only to said parent node. ### Claim 3 (depends on 1) The communication method according to claim 1, wherein said secondary node periodically emits a beacon message on the radiofrequency channel indicating a number of radio hops separating it from the primary node equal to the number of radio hops separating the primary node from the parent node plus 1. ### Claim 4 (depends on 1) The communication method according to claim 1, wherein, to emit said information on the radiofrequency channel to said parent node, the child node detects a beacon message periodically emitted by its parent node defining the beginning of a time window where it is able to receive information from the child node, the child node sending the information to the parent node during that window. ### Claim 5 (depends on 1) The communication method according to claim 1, wherein the child node periodically emits a beacon message defining the beginning of a time window where it can receive information from a node in its wireless neighborhood. ### Claim 6 (depends on 1) The communication method according to claim 1, wherein in order to detect the emission at a first given frequency of beacon messages by nodes in its wireless neighborhood, and a standard period with a length equal to an inverse period relative to the first frequency being divided into several portions, at least one portion is listened to by said secondary node with at least one offset period relative to the listening to another portion, said secondary node being put on standby for at least part of the time separating the two listening operations for the two portions ### Claim 7 (depends on 6) The communication method according to claim 6, wherein a new portion is listened to as soon as said secondary node has a sufficient power level to listen to said portion. ### Claim 8 (depends on 6) The communication method according to claim 6, wherein the size of at least one portion depends on the power supply current level of said node. ### Claim 9 (depends on 1) The communication method according to claim 1, implemented to monitor the heat of wiring systems, wherein the nodes are located at the wiring system junctions, and further comprise at least one temperature sensor, the information including data indicating at least temperatures measured by said sensors. ### Claim 10 A transceiver station, to form a node capable of transmitting and receiving on a radiofrequency communication channel, the node belonging to a network including a primary node and multiple secondary nodes for telecommunications, said station comprising: means for receiving respective beacon messages on the radiofrequency channel that are transmitted by nodes in its radio neighborhood, each indicating a number of radio hops separating the primary node from said node of the radio neighborhood that transmitted the message; means for selecting, as the parent node of said node formed by the station, called child node, the node from the radio neighborhood having transmitted the beacon message indicating a minimum number of hops; means for transmitting information to said parent node thus selected on the radiofrequency channel in order to send said information to the primary node thus selected. ### Claim 11 (depends on 10) The transceiver station according to claim 10, wherein to send information to the primary node, it comprises means for transmitting said information, through said second node, exclusively to said parent node. ### Claim 12 (depends on 10) The transceiver station according to claim 10, comprising means for periodically transmitting a beacon message on the radiofrequency channel, indicating a number of radio hops separating it from the primary node equal to the number of radio hops separating the primary node from its parent node plus 1. ### Claim 13 (depends on 10) The transceiver station according to claim 10, wherein to transmit said information over the radiofrequency channel to said parent node, it comprises means for detecting a beacon message periodically transmitted by its parent node, defining the beginning of a time window where it is able to receive information from the station, the station sending the information to the parent node during that window. ### Claim 14 (depends on 10) The transceiver station according to claim 10, comprising means for sending a periodic beacon message defining the beginning of a time window where it is capable of receiving information from a node in its radio neighborhood. ### Claim 15 (depends on 10) The transceiver station according to claim 10, wherein in order to detect the transmission of beacon messages at a first given frequency by nodes in its radio neighborhood, and a standard period with a length equal to a period equal to the inverse of the first frequency being divided into several portions, it comprises means for listening to at least one portion by said secondary node with at least one offset period relative to the listening to another portion, said secondary node being put on standby at least for part of the time separating the listening to the two portions. ### Claim 16 (depends on 15) The transceiver station according to claim 15, comprising means for listening to a new portion as soon as it has a sufficient power level to listen to said portion. ### Claim 17 (depends on 15) The transceiver station according to claim 15, wherein the size of at least one portion depends on the power current level of the station. ### Claim 18 (depends on 10) The transceiver station according to claim 10, wherein the information sent by the parent node comprises an address for identifying the child node on the network. ### Claim 19 (depends on 10) The transceiver station according to claim 10, wherein it is suitable for thermal monitoring of wiring systems, is located at a wiring system junction, and further comprises at least one temperature sensor, the information (including data indicating at least the temperatures measured by said sensors. ### Claim 20 (depends on 1) A computer program, to be installed in a transceiver station to form a node capable of transmitting over a radiofrequency channel, the node belonging to a network including a primary node and multiple secondary nodes for telecommunications, said program comprising instructions for carrying out the steps of a method according to claim 1 when the program is run by processing means of said transceiver station.