 | From the Series از مجموعه : Wireless Network Coding for Multiple Unicast Sessions
Produced by تهيه كننده : Microsoft Research
Date تاريخ : 2007-01-08
Wireless Network Coding for Multiple Unicast Sessionsdownload دانلود ,ويدئو و اسلايد Video & Slide , از گروه Computer Sience & Engineering كامپيوتر و مهندسی كتابخانه اينترنتي دانش گستران جوان You Research Description توضيح : A recent approach, COPE, for improving the throughput of unicast traffic in wireless multi-hop networks exploits the broadcast nature of the wireless medium through opportunistic network coding. In this work, we analyze throughput improvements obtained by COPE-type network coding in wireless networks from a theoretical perspective. We make two key contributions. First, we obtain a theoretical formulation for computing the throughput of network coding on any wireless network topology and any pattern of concurrent unicast traffic sessions. Second, we advocate that routing be made aware of network coding opportunities rather than, as in COPE, being oblivious to it. More importantly, our work studies the tradeoff between routing flows ``close to each other" for utilizing coding opportunities and ``away from each other" for avoiding wireless interference. Our theoretical formulation provides a method for computing source-destination routes and utilizing the best coding opportunities from available ones so as to maximize the throughput. We handle scheduling of broadcast transmissions subject to wireless transmit/receive diversity and link interference in our optimization framework.
Using our formulations, we compare the performance of traditional unicast routing and network coding with coding-oblivious and coding-aware routing on a variety of mesh network topologies, including some derived from contemporary mesh network testbeds. Our evaluations show that a route selection strategy that is aware of network coding opportunities leads to higher end-to-end throughput when compared to coding-oblivious routing strategies.
This work will appear in IEEE Infocom 2007 and is joint with Shravan Rayanchu and Suman Banerjee (Univ. of Wisconsin, Madison).
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Wireless Network Coding for Multiple Unicast Sessionsdownload دانلود ,ويدئو و اسلايد Video & Slide , از گروه Computer Sience & Engineering كامپيوتر و مهندسی كتابخانه اينترنتي دانش گستران جوان You Research Speaker(s) اجرا : Sudipta Sengupta, Bell Laboratories, Lucent Technologies
Runtime مدت زمان : 01:05:41
Video Size حجم ويدئو : 137 MB
Number of Slides تعداد اسلايد‌ها : 56 (4 MB)
Wireless Network Coding for Multiple Unicast Sessionsdownload دانلود ,ويدئو و اسلايد Video & Slide , از گروه Computer Sience & Engineering كامپيوتر و مهندسی كتابخانه اينترنتي دانش گستران جوان You Research
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