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Based on network coding reliability of wireless sensor networks

Author: HaoJing
Tutor: FengHaiLin
School: Xi'an University of Electronic Science and Technology
Course: Applied Mathematics
Keywords: Wireless sensor networks Reliability Network Coding ARQ Node degree
CLC: TP212.9
Type: Master's thesis
Year: 2011
Downloads: 202
Quote: 1
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Abstract


Data transmission reliability is a measure of the quality of the wireless sensor network communication important indicator mechanism for reliable data transmission in wireless sensor networks has been a key technology in the field . Based on the traditional ARQ ARQ , FEC forward error correction and multi -path transmission and other transmission mechanisms exist large amount of data redundancy , energy consumption and other defects, this paper discusses the network coding based wireless sensor networks reliable data transmission problems , the main work is as follows . First introduced network coding and network coding, network coding analyzed the impact of the data transmission reliability and energy consumption required to transmit data packets through the traditional mode of data transmission reliability for comparison, in a certain number of redundancy , the use of network coding can improve transmission reliability , while consuming less energy node coding , so resource-constrained network coding for wireless sensor networks to improve transmission reliability. By analyzing the pros and cons of ARQ retransmission mechanism , combined with ARQ retransmission mechanism and network coding , network coding is proposed based on reliable transmission strategy, which is the path loss according to the channel coding rate of the node and the node number of the node receives a packet required encoding redundant data packets, and then use the ARQ mechanism ensures that the node can successfully decode the simulation results show that the transmission strategy than traditional transport mechanisms to improve data transmission reliability advantages. Finally, the use of flood routing , the node degree is proposed based on network coding node selection strategy , and the relatively sparse distribution of nodes is encoded by adding a certain number of redundant packets to ensure reliability , each node the probability is selected coding node to determine the node degree . Through this strategy makes the flood routing transmission , through the limited choice of encoding nodes in the network to improve data transmission reliability. Simulation shows that the coding strategy dense network topology nodes and coding degree relationship .

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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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