System and method for communicating broadcast messages in a...

H - Electricity – 04 – J

Patent

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Details

H04J 1/16 (2006.01) H04L 12/28 (2006.01)

Patent

CA 2580077

A method for a gateway node to wirelessly communicate with a plurality of satellite nodes coupled to a sensing device or an actuator on one or more logical layers is disclosed. The gateway node generates a broadcast message for communication to the plurality of satellite nodes that is thereafter transmitted during a gateway node transmit communication time to one or more satellite nodes on a first logical layer of nodes that are within a broadcast range of the gateway node. The satellite nodes on the first logical layer receive the broadcast message, execute instructions contained in the broadcast message, and repeat the broadcast message to one or more additional satellite nodes on a logical layer beyond the broadcast range of the gateway node. An acknowledgement message is communicated back to the gateway node from each satellite node indicating receipt and execution of the broadcast message.

Cette invention concerne un procédé associé à un noeud passerelle servant à la communication sans fil avec plusieurs noeuds satellites couplés à un dispositif de détection ou à un actuateur sur une ou plusieurs couches logiques. Le noeud passerelle génère un message de télédiffusion destiné à être communiqué aux noeuds satellites et transmis ensuite pendant un intervalle de communication de transmission au noeud passerelle à un ou plusieurs noeuds satellites sur une première couche logique de noeuds se trouvant à portée de télédiffusion du noeud passerelle. Les noeud satellites sur la première couche logique reçoivent le message de télédiffusion, exécutent les instructions contenues dans ce message de télédiffusion et répètent ce message de télédiffusion à l'intention d'un ou de plusieurs noeuds satellites supplémentaires sur une couche logique au-delà de la portée de télédiffusion du noeud passerelle. Un message d'accusé de réception est communiqué en retour au noeud passerelle depuis chaque noeud satellite, pour indiquer la réception et l'exécution du message de télédiffusion.

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