A communication method and device for a wireless sensor network

Abstract

The invention discloses a communication method and device for a wireless sensor network, and belongs to the technical field of communication. The method comprises the steps that a first node broadcasts a first message to a neighbor node of the first node; a response message replied by the neighbor node is received, the response message comprises node information of the neighbor node, the node information comprises a battery remaining capacity of the neighbor node and a remaining hop count from the neighbor node to the destination node; When the neighbor node of the first node is other sensor nodes except the destination node, the first node selects one node from the neighbor nodes as a second node according to a response message replied by the neighbor node; And the data packet is sent tothe second node. According to the communication method provided by the invention, while the residual energy of each node is considered, one path with the least hop count reaching the destination nodeis selected as the optimal transmission path, so that the node energy of the whole network is balanced, and the survival time of the network is prolonged to the maximum extent.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a communication method and device for a wireless sensor network. Background technique [0002] A wireless sensor network is a wireless network composed of a large number of sensor nodes with sensing capabilities through wireless communication. A large number of sensor nodes are deployed in or near the monitoring area, so that the wireless sensor network can cooperatively sense, collect and process the information of the perceived objects in the monitoring area. [0003] At present, the common communication method of wireless sensor network is the shortest path method, that is, the path with the least number of hops from the source node to the destination node is selected as the optimal transmission path. Starting from the source node, according to the optimal transmission path, the data packet containing the information of the perceived object is sequentially forwarded to...

AI Technical Summary

Problems solved by technology

[0005] When the above communication method is used for data packet transmission, there may be a situation where a node frequently forwards data packets, which will speed up the energy consumption of the node

The nodes in the wireless sensor network are generally powered by batteries, and the effective power of the battery is very limited. Therefore, when the battery power is exhausted, the node will die, resulting in network segmentation or even network paralysis, which greatly shortens the survival time of wireless sensor networks.

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