Mobile assistance WSNs routing method based on unequal clustering

A non-uniform clustering and wireless sensor technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problems of energy exhaustion, WSNs energy consumption increase, message data cannot be transmitted to sink in time, and achieve balanced energy consumption , convenient management and topology control

Inactive Publication Date: 2015-10-21
SICHUAN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

The defect of LEACH: in a large-scale network, the cluster far away from the sink communicates directly with the sink, which may easily lead to energy exhaustion and failure
However, when there are too many forwarding hops of node data, the energy c

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  • Mobile assistance WSNs routing method based on unequal clustering
  • Mobile assistance WSNs routing method based on unequal clustering
  • Mobile assistance WSNs routing method based on unequal clustering

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Embodiment Construction

[0025] image 3 It is a schematic diagram of the network model, 1600 sensor nodes are randomly deployed in a circular area with a radius of 226m, and the sink is located at (0,0). The specific model is:

[0026] ①The sink node moves in a circle along a fixed trajectory with a constant rate, the energy of the sink node is sufficient, and the storage capacity is not limited.

[0027] ② All ordinary sensor nodes are isomorphic, that is, the initial energy, communication radius, storage capacity, and message generation rate of the nodes are the same.

[0028] ③ All common sensor nodes know the location of the network center, and can use GPS auxiliary equipment for positioning.

[0029] ④ The transmission power of the mobile sink and sensor nodes is adjustable, and they can broadcast or receive and forward data according to their own needs, so as to save energy.

[0030] Overall process: initial phase, clustering phase, RPs determination phase, routing phase. The initial stage o...

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Abstract

The invention provides a mobile assistance WSNs routing method based on unequal clustering, comprising an initial phase, a clustering phase, an RPs (rendezvous points) determining phase and a routing phase. The initial phase is a network deployment phase and determines the movement track of a sink. The clustering phase considers factors such as the distance gradient between a point and a mobile sink, the rest energy of a candidate cluster head, etc. The RPs determining phase discusses the selection number and width of an RPs set, and specific sets, and simplifies a 0-1 integer programming model specific to the selection problem of an RP salve cluster head point set, wherein an approximately optimal RPs slave point set of an integer programming solution is obtained through a genetic algorithm. The routing phase employs multiple levels of routing, wherein the cluster head collects cluster member message data (including data fusion) and plays the role of a relay point, and PRs buffer messages transmitted by cluster head points into the mobile sink.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to a non-uniform clustering-based mobile assistance WSNs routing method. Background technique [0002] As an interdisciplinary subject, wireless sensor network mainly involves radio communication technology, sensor technology, embedded microprocessor technology, information security technology and so on. In recent years, it has been widely used in many fields, including military industry (such as the US C4ISRT system), aviation, commerce, biomedicine, anti-terrorism and anti-riot, environmental protection, etc. However, due to the energy limitation of WSNs, wireless sensor networks are limited and developed. How to reduce energy consumption is currently a research hotspot in WSNs. At present, in the routing design of WSNs, experts and scholars not only pay attention to the energy consumption caused by data transmission, but also pay attention to the im...

Claims

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Application Information

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IPC IPC(8): H04W40/10H04W84/16
CPCY02D30/70
Inventor 彭舰兰恒武刘唐其他发明人请求不公开姓名
Owner SICHUAN UNIV
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