Routing method and system of wireless sensor network

Abstract

The invention discloses a routing method and a system of a wireless sensor network. The method comprises the following steps: S1, receiving broadcast message from a designated node, wherein the broadcast message comprises a designated route constituted by more than two designated nodes; S2, taking the nod as a protective nod and then forming a robust route by the protective nod and the designatedroute, under the condition that nodes adjacent to the node comprise at least two designated nodes; and S3, carrying out transmission and packet by coordinating the protective node with the designatednode. In the routing method of the wireless sensor network, the protective node is determined according to the designated route obtained from the designated node; when one designated node on the designated route becomes invalid or moves, the protective node of the nod will substitutes the node for transmission and packet, thus a robust route is rapidly established with less expenses, effectively reducing fracture of routes and accommodating the change of topology; in addition, as retransmission and packet in unstable or invalid connections are avoided, energy consumption is saved.

Description

【Technical field】 [0001] The invention relates to a wireless sensor network, in particular to a routing method and system for the wireless sensor network. 【Background technique】 [0002] The wide application of wireless sensor network affects all aspects of daily life. In many applications, sensor nodes in wireless sensor networks are mobile. For example, field monitoring, environmental exploration, or equipping animals with sensors for tracking and monitoring. [0003] In mobile wireless sensor networks, disconnection occurs frequently due to factors such as channel attenuation, shielding, interference, node failure or movement. Once the connection is broken, rerouting or replacement routing must be performed immediately. Otherwise, packet loss and significant delays can occur. Therefore, the robustness of the path becomes the key to the routing design of mobile wireless sensor networks. On the one hand, it is necessary to ensure that the connection on the path is not e...

AI Technical Summary

Problems solved by technology

Although many different routing protocols for mobile wireless sensor networks have been proposed, the robustness of the path is not considered enough, and most of them do not consider the frequent movement of sensor nodes, and traditional rerouting is also used for path recovery. , looking for another path to reach the target node, which will inevitably bring huge overhead and lower routing performance

None of them are suitable for highly dynamic network topologies, especially for mobile sensor nodes with limited energy and computing power.

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