Method for local topology reconstruction of wireless sensor network based on sector

A wireless sensor and topology technology, applied in the field of wireless sensor network topology control implementation, can solve problems such as small range, cluster splitting and clustering, affecting network load balance, etc.

Inactive Publication Date: 2008-08-06
JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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Problems solved by technology

However, the scope of local reconstruction is difficult to determine. If the scope is too small, too few nodes participating in re-clustering will easily lead to cluster splitting and ...

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  • Method for local topology reconstruction of wireless sensor network based on sector
  • Method for local topology reconstruction of wireless sensor network based on sector

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Embodiment Construction

[0028] A method for adaptive topology reconstruction of a wireless sensor network based on clustering, comprising the following steps:

[0029] A. Network distributed clustering, establishing a network topology based on clustering;

[0030] In the clustered network topology, there are two kinds of nodes: cluster head (Cluster Head, CH) and cluster member (ClusterMember, CM). When the node is initialized, the identity is undefined (Undefined, UN). In the networking process, including the three threads of channel listening, message interaction and node network access, any distributed cluster head competition method can be used. In the present invention, a kind of cluster head election method based on multi-weight optimization is provided as an example, and its specific steps are as follows:

[0031] a1: neighbor discovery

[0032] 1) The node listens to the channel for 1 superframe period, if it receives the Beacon frame of CH, it sets its state as PreCM, and turns to step3; ...

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Abstract

The invention relates to a method for realizing distributed localized network topology reconstruction based on a clustered wireless sensor network; the reconstruction is triggered by broadcasting a reconstruction message by a cluster head or by broadcasting the reconstruction after the fault is detected by a backup cluster head in order to start the topology reconstruction course; a reconstruction range is decided by a trigger node according to the scale of the cluster and the adjacent cluster; due to the randomicity of the network node distribution, the partial reconstruction ranges triggered by different clusters are different to ensure that a reconstructed cluster structure is superior. The method provided by the invention provides a better solution for the cluster head rotation of the wireless sensor network of the cluster structure and well compromises the network overhead and the optimization of the cluster structure.

Description

technical field [0001] The invention relates to a wireless sensor network topology control realization method, in particular to a cluster-based wireless sensor network local self-adaptive topology reconstruction method. Background technique [0002] Wireless sensor network (wireless sensor network, WSN) is an emerging frontier research hotspot that has attracted much attention in the world and is highly interdisciplinary. Wireless sensor networks have very broad application prospects, and have important scientific research value and great practical value in many fields such as military defense, industry and agriculture, urban management, biomedicine, environmental monitoring, emergency rescue and disaster relief, anti-terrorism and anti-terrorism, remote control in dangerous areas, etc. , has attracted great attention from the military, academic and industrial circles of many countries in the world, and has become a recognized emerging frontier hot research field since 2000,...

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Application Information

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IPC IPC(8): H04L12/56H04L29/08H04L12/24H04W84/18
Inventor 黄河清姚道远马奎沈杰刘海涛
Owner JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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