Routing method, device and sensor nodes of wireless sensor network

Abstract

The invention discloses a routing method, a device and sensor nodes of a wireless sensor network, which are used for balancing the energy consumption of the wireless sensor network and prolonging the lifetime of the whole wireless sensor network. Wherein the routing method of the wireless sensor network comprises that a first distance between the sensor node and a sink node is confirmed by the sensor node which need to retransmit monitoring data; in allusion to each neighbour node of the sensor node, second distances between the neighbour nodes and the sink node are confirmed respectively; in each neighbour node of the sensor nodes, whether a neighbour node of which the confirmed second distance is smaller than the first distance exists is judged; if the neighbour node exists, a neighbour node is chosen from all the neighbour nodes of which the second distances are smaller than the first distances for retransmitting the monitoring data; and if not, a neighbour node is chosen from all the neighbour nodes of the sensor nodes for retransmitting the monitoring data.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a routing method, device and sensor node of a mobile wireless sensor network. Background technique [0002] A wireless sensor network (WSN, Wireless Sensor Network) is composed of dozens to hundreds of sensor nodes, and a wireless sensor network is a mobile peer-to-peer network that uses wireless communication to dynamically form a network. Such as figure 1 Shown is a wireless sensor network system architecture diagram, including a sensor node (Sensor Node), a sink node (Sink Node) and a management node. [0003] A large number of sensor nodes are randomly deployed in the monitoring area. Each sensor node can form a data transmission network through self-organization. After the sensor node collects the monitoring data, it should send the collected monitoring data to the aggregation node, and then the aggregation node sends it to the management node, but some sensor nodes can...

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Problems solved by technology

[0008] Although the above two solutions can reduce the energy consumption of a single sensor node, if the number of times each sensor node is selected is different during routing selection, the energy consumption of each sensor node will be different. Some sensor nodes It consumes a lot of energy, while some sensor nodes consume less energy, which will lead to unbalanced energy consumption of sensor nodes in the entire wireless sensor network. Since the effective use time of sensor nodes with larger energy consumption is shorter, the wireless sensor The unbalanced energy consumption of each sensor node in the network will shorten the effective use time of the entire wireless sensor network, that is, the lifetime of the wireless sensor network is short.

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