Method for recovering wireless sensor network connectivity

A wireless sensor network and recovery method technology, applied in the field of distributed network connectivity recovery, can solve the problems of network coverage reduction, energy consumption, total number of migration nodes, increase of total moving distance overhead, etc., to reduce migration The number of nodes, probability reduction, and the effect of avoiding additional overhead

Active Publication Date: 2017-05-17
SHANGHAI MARITIME UNIVERSITY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cascading inward movement will lead to an increase in the total number of migrated nodes, the total cost of moving distance, and the network coverage will be reduced accordingly
[0008] In the existing methods, no effective connectivity recovery method is proposed for the network with dynamic topo

Method used

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  • Method for recovering wireless sensor network connectivity
  • Method for recovering wireless sensor network connectivity
  • Method for recovering wireless sensor network connectivity

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Embodiment Construction

[0035] specific implementation plan

[0036] In order to make the purpose and technical solutions of the present invention clearer, the principles and specific steps of the present invention are described below in conjunction with the accompanying drawings:

[0037] Step (1) In the initial wireless sensor network, use the existing flooding information method to generate a connected dominance set CDS including network backbone nodes, each node sets its own node status information according to whether it is included in the CDS, is For a dominant node, the state number is set to 3, and the state color is marked as black. If it is a non-dominated node, the state number is set to 2, and the state color corresponds to gray. State 3 is a stable state of the dominant node, and state 2 is a stable non- Dominant node state.

[0038] Step (2) The surrounding neighbor nodes send a message to the failed node, and the neighbor node that does not receive a reply message and the state number...

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Abstract

The invention discloses a method for recovering wireless sensor network connectivity and mainly solves the problem that connectivity loss, caused by node faults, of a wireless sensor network influences the safety reliability of the network. The method is applicable to the dynamic-topological-relation wireless sensor network. The method has the advantages that a finite-state machine model is used to screen and communicate with a dominating set, the state of a node is updated in real time, and an optimal replacement node is selected according to node criticality and distance to replace an original faulted node so as to recover the network state; the method distinguishes node criticality, network energy consumption is reduced, the node state is updated in real time, and the method is adaptive to a dynamic network topology environment.

Description

technical field [0001] The invention relates to the technical fields of wireless sensor network and security topology control, in particular to a method for recovering connectivity of a distributed network. Background technique [0002] The Internet of Things is called the third wave of the world's information industry after computers and the Internet. As one of the core technologies of the Internet of Things, Wireless Sensor Networks (WSNs) have attracted more and more attention from researchers in recent years. The wireless sensor network can make corresponding actions according to the monitoring data and exchange information with the environment, so that more complex monitoring tasks can be performed. WSNs have great application prospects in border protection, battlefield reconnaissance, search and rescue and other fields. [0003] Wireless sensor networks are usually deployed to perform tasks in harsh environments and unattended environments, and nodes are prone to fai...

Claims

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Application Information

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IPC IPC(8): H04W76/02H04W84/18
CPCH04W76/19H04W84/18Y02D30/70
Inventor 张颖郝冠姜胜明耿烜张韵农周润东熊伟朱竹灵王明兴方敏
Owner SHANGHAI MARITIME UNIVERSITY
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