Multi-hop dynamic ad hoc network method of wide field sensor network

Abstract

The invention provides a multi-hop dynamic ad hoc network method of a wide field sensor network, which comprises the following steps: a common node receives and transmits broadcast networking type data from a gateway and synchronizes the time of total network common nodes and the gateway according to an MAC time stamp; the common node processes the received broadcast networking type data, estimates the link quality of neighbor nodes, calculates the layer number per se and calculates a multi-hop routing tree produced by a corresponding father node; and the common nodes are periodically awakened and detect local data by using the stepped dispatching algorithm, receive and processe data from the upper layer, the same layer and the lower layer of the common nodes, persistently maintains the information of the neighbor nodes, updates the father node and the multi-hop routing tree, and transmits data from the lower layer and data produced per se to the upper layer. The wide field sensor network running Layer Mesh can be randomly deployed, and the Layer Mesh completes zero-configuration zero-supervision self-controlled networking, self-controlled energy-saving operation and self-controlled maintenance after deployment.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a multi-hop dynamic self-organizing network method for wide-area sensor networks. Background technique [0002] Wide-area wireless sensor network refers to a kind of ultra-large-scale wireless sensor network, including tens of thousands of micro-sensor nodes, which are deployed in wide-area space environments such as farmland, battlefields, and river valleys. Jump distributed network to complete application tasks such as information collection. In the existing wide-area sensor network system research, self-organized multi-hop routing communication protocol is the focus and difficulty in the research. Due to the large number of nodes, it is difficult to manually configure, and the deployment environment is complex and often difficult to approach. After the wide area sensor network is deployed, it must complete neighborhood information learning, routing tree establishment, ...

AI Technical Summary

Problems solved by technology

However, among the above-mentioned existing protocols, Xmesh, MintRoute, Zigbee, and cluster self-organizing protocols, the ability to handle events such as nodes dynamically joining and leaving, and the ability to deal with the impact of environmental changes on network link quality are relatively insufficient

[0018] 2) Contradiction between system energy saving and system scalability

Xmesh performs sleep scheduling based on the time synchronization of the entire network, but the time synchronization accuracy is low, resulting in imprecise sleep time slot design, which affects energy saving performance

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