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Study on Cluster-based Routing in DTN

Author: ChaiYing
Tutor: ShuYanTai
School: Tianjin University
Course: Applied Computer Technology
Keywords: DTN Clustering Asynchronous routing Location information
CLC: TN929.5
Type: Master's thesis
Year: 2010
Downloads: 112
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Abstract


With a wide range of applications with the rapid development of wireless network the restricted network emerging Internet basic assumption is not met . Unlike traditional wireless networks , these networks do not usually exist stable end - to - end path , the transmission delay is generally higher . Delay Tolerant / content off the network (Delay and Disruption Tolerant Networking, DTN) is a new wireless network to a restricted network interconnection . As the traditional wireless routing protocol can not effectively transfer data in network delay tolerant / content off , DTN routing technology has become one of the key issues of delay tolerant network research areas / content off . Existing DTN routing algorithms are mostly mobile nodes with storage - Pets - Forward asynchronous transfer mode communication between nodes . The frequent movement of the nodes often makes multiple nodes are close to each other and aggregation clusters . In reality , there are many DTN applications ( such as battlefield communications , monitoring and tracking of wild animals , etc.) are mostly composed by the group mobile nodes . This paper presents a hybrid routing algorithm CDFR method used in sub- cluster DTN . The algorithm combines the traditional wireless routing protocol DSR DTN asynchronous routing protocols . When present in the end-to-end path in the network , the node through the the DSR transfer data . When the network does not exist in a stable end-to-end path the asynchronous routing protocol data transmission . When the the CDFR algorithm during data asynchronous transmission , the use of node location information from two angles of the node location and direction of movement of the intermediate nodes filter , select the appropriate intermediate nodes message forwarding to reduce the transfer of redundant data . In this paper, Qualnet simulation platform evaluated the performance of the the CDFR algorithm in different scenarios . Simulation results show that : in the the typical the DTN scene and clustering scenarios , CDFR algorithm in the delivery rate , average delay and a copy of the copy number have achieved the desired results .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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