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Study of Wireless Sensor Network Routing Algorithm

Author: LiZhenKe
Tutor: ChenGuoDing
School: Zhejiang University of Technology
Course: Control Theory and Control Engineering
Keywords: Wireless sensor networks Routing algorithm Data Fusion Power Control LEACH protocol
CLC: TP212.9
Type: Master's thesis
Year: 2010
Downloads: 84
Quote: 1
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Abstract


The wireless sensor network is an emerging technology, it was named one of ten key technologies of the 21st century. The wireless sensor network is a non-infrastructure wireless network, it is a combination of embedded computing technology, sensor technology, distributed information processing technology and wireless communication technology. Development and wide application of wireless sensor networks, will a tremendous impact on people's social life and industrial change. Wireless sensor network applications for the target, and its construction is a huge project, related to the research work and have a lot of problems to be solved. Routing algorithm and energy consumption is one of the two research hotspot. The routing algorithm and energy consumption is closely related to the routing algorithm can reduce the energy consumption of the network. The purpose of this article focused on how to design appropriate routing algorithm to reduce network energy consumption, extend network life cycle, so as to expand the in-depth study. Wireless sensor network routing algorithm has applications correlation This article first determine the design of the new algorithm is used to solve the routing problem for large and medium-sized network environment. Hierarchical routing algorithm for large and medium-sized network environment, we have chosen for the study. First, the key technology in the design of the routing algorithm, including data fusion technology, power control technology, the \Through research to identify these defects in the art, the proposed improvement measures against these defects. Then, on this basis, based on typical hierarchical routing algorithm-LEACH protocol, combined with their own research, algorithms design routing algorithm applies to new environmental conditions-LEACH-N (NEW LEACH). The LEACH-N algorithm main improvements made in the following aspects. A data transmission mode and communication mechanisms. Ways to improve data transfer between the cluster and cluster head and base station for single-hop and multi-hop combined, while the introduction of the CSMA / CD, Carrier Sense Multiple Access / Collision Detection communication mechanism. Improved to avoid a large number of energy loss of the node caused by the long-distance transmission of data, while effectively avoiding data collisions, reducing network energy consumption. 2 data fusion method. In the LEACH-N algorithm, using a combination of distributed and centralized data fusion. Such a manner that further improve the efficiency of the data fusion, reducing the amount of redundant data in the network, and saves the network energy. 3 power control algorithm. In LEACH-N algorithm is applied based on the direction of the power control algorithm, so that the node in the transmission data signal is only transmitted within a certain range of directions. Relative to the full range of data transmission mode, greatly save network energy. (4) hot zone of the network processing. Through more hot region in the network node, to adjust the size of the cluster, thereby changing the amount of data in the cluster, to reduce the workload of a cluster head. Effectively avoid the cluster head energy consumption in the hot zone is too large, and rapid death. Finally, verify the LEACH-N algorithm, this paper it through MATLAB simulation software and LEACH protocol network performance comparison simulation. The simulation results can be seen, a new hierarchical routing algorithm in the amount of data transmission, energy consumption, node death time and achieved good results.

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