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Research On Location Planning Method Of Mobile Aggregation Node In Wireless Sensor Networks

Posted on:2017-04-05Degree:MasterType:Thesis
Country:ChinaCandidate:Q HuangFull Text:PDF
GTID:2278330488964986Subject:Computer application technology
Abstract/Summary:PDF Full Text Request
Data gathering, collecting and aggregating is the fundamental tasks of wireless sensor networks (WSNs). In the process of data collection, the nearer the sink node of the sensor nodes are usually need to take more data relay transmission, and has higher energy consumption. When the sensor nodes run out of energy, will cause the energy hole problem, make the sink node isolated in the network and cannot collect data. Use mobile sink nodes in the network for relocation are to solve the problem of wireless sensor network energy hole is an effective method. This paper study the mobile sink in wireless sensor network, proposes two sink relocation strategy, the main research work and innovation are the following:Firstly, this paper presents a hexagonal grid based sink relocation method in wireless sensor networks, HGSR and HEESR. They are based on the two-dimensional grid. The two plans are to use MCP routing and transmission radius adjustment mechanism. By MCP routing, the sensor can choose routing path with the biggest surplus energy, reduce the load with low residual energy node. Due to the transmission between the node energy consumption is directly proportiona1 to the distance between nodes, the farther the distance, the higher energy consumption. By changing the node transmission radius, reduce energy consumption of transmission between nodes. Simulation experiments have proved that HGSR and HEESR to lower the network energy consumption to a certain extent improve the overall network life span.Secondly, this paper presents an Archimedes spiral based sink relocation method in wireless sensor networks, ADSR and IADSR. Both are based on the preset trajectory. Because the Archimedes spiral has a constant linear velocity, angular velocity and a symmetrical spiral in the coordinate system. Besides, sink nodes collected only data information of two-hop neighbor sensor node. Use the less hop can greatly save energy sensor. Simulation experiment proves that the ADSR is not obvious better then before, but the improved method, IADSR, can obviously increase the network lifetime, balance the network energy consumption.
Keywords/Search Tags:wireless sensor networks, energy hole, sink relocation, honeycomb grid, Archimedes spiral
PDF Full Text Request
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