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《Journal of Electronics & Information Technology》 2012-01
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Message-redundancy Estimating Adaptive Buffer Management Mechanism for Opportunistic Network

Wu Da-peng Zhou Jian-er Wang Ru-yan Zhang Pu-ning(Special Research Centre for Optical Internet and Wireless Information Networks, Chongqing University of Posts and Telecommunications,Chongqing 400065,China)  
With the manner of storing-carrying-forwarding,nodes can communicate with each other in opportunistic network,but the limited buffer should be used reasonably.Based on message redundancy estimating,an adaptive buffer management mechanism is proposed in this paper.According to the node's activity degree and the number of message copies,the status of message transmitting in the network can be predicted;moreover,with the parameter of message redundancy,the decision on message receiving and forwarding can be made dynamically.Numerical results show that the methods to evaluate node's activity degree and number of message copies are accurate;furthermore,comparing with other buffer management mechanisms,the proposed mechanism can improve message delivery rate effectively,reduce latency and overhead ratio.
【Fund】: 国家自然科学基金(61001105);; 重庆市教委科学技术项目(KJ100521)资助课题
【CateGory Index】: TN929.5
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