Method for controlling a wake up rate of nodes operating...

H - Electricity – 04 – W

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H04W 52/02 (2009.01) H04W 16/26 (2009.01) H04W 84/18 (2009.01)

Patent

CA 2715981

A method is provided which enables the connection of nodes out of communication range while minimizing the energy consumption in standby nodes. Specifically, the present invention provides a method to control the wake up rate of standby nodes in a multi-hop communication system. An access point collects, process-es, and refines statistical information regarding one or more system parameters; determines a wake up rate based on the statistical information and one or more historical in-formation; and transmits the wake up rate to nodes in its coverage area. A node receives the wake up rate; and peri-odically changes from a sleep state to a wake up state at the wake up rate to support routing functions for providing multi-hop communication to the one or more access points.

L'invention porte sur un procédé qui permet la connexion de noeuds se trouvant hors de la portée de communication tout en minimisant la consommation d'énergie dans les noeuds en attente. En particulier, l'invention concerne un procédé qui permet de régler la vitesse d'activation des noeuds en attente dans un système de communication à sauts multiples. Selon l'invention, un point d'accès collecte, traite et affine des informations statistiques concernant un ou plusieurs paramètres système; il détermine une vitesse d'activation sur la base des informations statistiques et d'un ou plusieurs éléments d'information historique; et transmet la vitesse d'activation aux noeuds se trouvant dans sa zone de couverture. Selon l'invention, un noeud reçoit la vitesse d'activation et passe périodiquement d'un état de veille à un état activé conformément à la vitesse d'activation, afin de prendre en charge des fonctions permettant d'offrir une communication à sauts multiples aux points d'accès précités.

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