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The Research of Energy-Efficient Protocol for Large Wireless Sensor Networks

Author: LiuXinHua
Tutor: LiFangMin
School: Wuhan University of Technology
Course: Communication and Information System
Keywords: Wireless sensor networks Routing Protocol Directed Diffusion Clustering DDBC agreement
CLC: TP212.9
Type: Master's thesis
Year: 2005
Downloads: 509
Quote: 7
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Abstract


The wireless sensor network is a new kind of infrastructure, self-organizing wireless network. With the development of microelectronics technology, sensor technology and communication technology in recent years, the rapid development of wireless sensor network technology progressed very quickly, and some specific applications in the military and civilian aspects of a success. Because of its wide range of applications, the prospects for the future development of wireless sensor networks. However, limited hardware resources, wireless sensor networks have limited power capacity, data-centric, self-organized, multi-hop routing, dynamic topology, the large number of nodes and distribution-intensive features, many existing routing protocols do not apply to it , especially in large-scale wireless sensor networks. In this context, the study of large-scale wireless sensor network routing protocols. First, describe the architecture of wireless sensor networks and related concepts, and then analyze the characteristics of the wireless sensor network routing protocols, performance evaluation, and design factors. On this basis, several typical wireless sensor network routing protocols have been proposed to focus on research and analysis, and comprehensive assessment. Directed diffusion algorithm to the data center, but also has good scalability, more suitable for large-scale wireless sensor networks directed diffusion algorithm mainly depends on the plane to create flooding routing plane flooding because of its inherent defects, will vary with the network expansion of the scale, the more energy, which will severely reduce the life cycle of the network. Therefore, in order to inhibit the the flood propagation consumption energy directed diffusion algorithm based on proposed an improved routing protocol - based on clustering directed diffusion the agreement (DDBC Protocol). DDBC agreement is a clustering to simplify the network topology, redundant messages to inhibit the spread of flooding to directed diffusion routing protocol to improve network energy efficiency. Analysis of existing mechanisms and algorithms of clustering the, DDBC Agreement passive clustering strategy, that is, only when the network when the network data communication requirements to establish a sub-cluster network topology, the establishment and maintenance of the network topology. done locally, and does not require a separate control commands, in order to save energy costs. The most important in the clustering strategy selection mechanism of cluster head election mechanism, and the gateway node, cluster head election using the \between the principle of balance to determine. Described in detail in the text the DDBC protocol and its implementation algorithm and simulation in NS2, the experimental results show that the the DDBC protocol has better energy efficiency, and still has a good performance nodes massive increase.

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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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