Dissertation > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Sensor applications

Research of WSN Topology Control Based on Adaptive Mechanism

Author WuZhiBin
Tutor LiJie
School Henan University
Course Applied Mathematics
Keywords Wireless sensor networks Override control Power Control Adaptive
CLC TP212.9
Type Master's thesis
Year 2009
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Topology control is one of the core issues in wireless sensor network research. High-density deployment of wireless sensor networks by means of based coverage control node scheduling and power control, does not affect network coverage, connectivity premise, to reduce the number of active nodes in the network, reducing the node transmit power to reduce the channel conflict, reducing the energy consumption of the nodes, so as to achieve the purpose of prolonging network survival time. This paper to solve the bottleneck of network energy consumption and extend the network lifetime, respectively, from the coverage control, power control and the other layer protocol combining the three aspects of research, adaptive node scheduling algorithm, the nonuniform power control algorithms and routing combining topology control mechanisms. A node adaptive to cover scheduling algorithm, node to reduce the redundancy of network coverage, through coverage of the furthest blind spots vertex neighbor information only, and ensure network coverage requirements under the premise of layers and diffusion scheduling command as much as possible so that more more node Sleep. The algorithm is executed in a predetermined network model, greatly reduces the redundancy of network coverage, thereby reducing the burden on the network caused due to redundant data. Second, the non-uniform power control algorithm to solve exacerbated due to the power control of the \consumption and to find a compromise to maintain network connectivity. The simulation shows that the program makes the network load balancing has been greatly improved, and provides the basis for the routing protocol and MAC protocol, effective mitigation of the \Third, and routing protocol phase combination of the topology control mechanisms due to changes in the network topology of the influence to the routing path length and the node between the communicating resistance, so the routing protocol and topology control protocol have a close relationship, algorithm through the design of the right weight function and The node type conversion mechanism so that the data is fully considered in the process of routing node dormant, routing history current energy and other related information and the process of routing the adaptive adjustment of the power, and the full use of the topology control information to improve the load balancing of the network data communication to extend the network lifetime, the combination of simulation experiments show that the topology control and routing protocols can significantly prolong the survival time of the network.

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