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文件名称：XORs in the Air: Practical Wireless Network Coding
文件大小：938KB
文件格式：PDF
更新时间：2012-05-28 00:33:18
Algorithms design network coding
Abstract—This paper proposes COPE, a new architecture for
wireless mesh networks. In addition to forwarding packets, routers
mix (i.e., code) packets from different sources to increase the information
content of each transmission.We show that intelligently
mixing packets increases network throughput. Our design is rooted
in the theory of network coding. Prior work on network coding
is mainly theoretical and focuses on multicast traffic. This paper
aims to bridge theory with practice; it addresses the common case
of unicast traffic, dynamic and potentially bursty flows, and practical
issues facing the integration of network coding in the current
network stack. We evaluate our design on a 20-node wireless network,
and discuss the results of the first testbed deployment of
wireless network coding. The results show that using COPE at the
forwarding layer, without modifying routing and higher layers, increases
network throughput. The gains vary from a few percent to
several folds depending on the traffic pattern, congestion level, and
transport protocol.