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發佈日期 2016-09-23
公告標題 1050926專班seminar演講資訊
詳細內容

時間:105926(星期一)

地點:大仁樓200301教室

主持人:張宏慶老師

演講者:國立中央大學通訊工程學系 胡誌麟教授

演講題目:Buffer Management Based on Game Theory for Bundle Protocol in 

                                       DTNs

演講摘要:Delay tolerant networks (DTNs) with Bundle Protocol (BP) are advocated a reliable message delivery service on in highly dynamic network environments. Using the Bundle Protocol in DTNs, however, faces two possible problems. First, opportunistic or unpredictable contacts among nodes may make it difficult for all divided bundles to arrive at a destination, this problem which might enforce the failure of message reconstruction services in a network. Second, the non-dropped feature of custody transfer used by BP may cause nodes spend excessive storage space to store custody bundles, this problem which might induce buffer overflow on the nodes. In this study, we propose a Buffer Management scheme based on Game Theory (BMGT): nodes can control the number of bundles in their own storage and avoid the likelihood of bundle congestion in DTNs. BMGT combines the principle of Fountain Code that any destination does not need to receive all divided bundles to recover original message. In addition, BMGT derives the appropriate forwarding and receiving probability based on the game theory model, which takes node storage utilization into account, for two nodes in communications. Under various synthetic contexts. performance results manifest that BMGT can not only achieve efficient storage resource allocation but also resolve the congestion issue against the convention of Bundle Protocol in DTNs.