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Study of Congestion Control in Wireless Sensor and Actor Networks

Author: WangLun
Tutor: TanLianSheng
School: Central China Normal University
Course: Computer System Architecture
Keywords: Wireless Sensor Response Network Congestion Control Event Event reliability Rate adjustment
CLC: TP212.9
Type: Master's thesis
Year: 2011
Downloads: 29
Quote: 1
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Abstract


Network congestion has long been of the important issues of the people in the traditional end-to-end Internet congestion control research has made ??great progress , and the rise of wireless sensor networks congestion control research and new challenges . The WSN node the security classification deployment , many-to-one communication , mutual interference of the wireless link , the dynamic changes of the network topology , resource-constrained characteristics are caused by network congestion factor . Since the energy storage capacity of the sensor network node , computing power and communication capabilities are very limited , so the network congestion will be a large number of node energy consumption , reduce network life cycle , reduce network reliability . Relative to the traditional wired Internet congestion control in sensor networks is more important , but also the congestion control algorithm has higher requirements . In recent years, many researchers began to study the problem of congestion control in wireless sensor networks , many algorithms , such as CODA, ESRT . Wireless the sensor reacts network (Wireless Sensor and Actor Networks, WSANs) is derived from the WSN , a new sensor network containing reaction node (Actor Node) . Wireless the sensor reaction network architecture as well as real-time and reliable transmission of events makes the congestion control new requirements , researchers have proposed solutions , such as RT2 agreement . This paper first analyzes the characteristics of congestion in WSN and WSANs existing congestion control algorithms , and then in the the RT2 agreement based on an improved based on the the event reliability protection of congestion control the algorithm CCBER ( a \rate control scheme based on event reliability). Reliability CCBER events in WSANs mathematical modeling , the Actor node according to the the the Sensor node key in the the receiving data analysis event area , and then provide a more accurate and reasonable rate adjustment mechanism based on criticality , the premise of the control network congestion to seek the biggest event reliability guarantee .

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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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