NCAC-MAC: Network coding aware cooperative medium access control for wireless networks
NCAC-MAC: Network coding aware cooperative medium access control for wireless networks
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DOI：
10.1109/wcnc.2012.6214044
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发表时间：
2012-04
期刊：
影响因子：
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通讯作者：
Xiaoyan Wang;Jie Li;M. Guizani
中科院分区：
文献类型：
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作者：
Xiaoyan Wang;Jie Li;M. Guizani
协作通信是利用相邻节点传递偷听信息来对抗信道衰落、提高网络性能的一种有效技术。而网络编码将多个数据包合并在一起传输，有助于减少网络中的冗余，提高整体吞吐量。在协作重传过程中引入网络编码，使得中继节点在服务自身业务的同时，能够辅助其他节点。为了充分利用这两者带来的好处，需要一个有效的媒体访问控制（MAC）协议。在本文中，我们提出了一种新的网络编码感知的协作MAC协议，即NCAC-MAC，无线网络。NCAC-MAC协议的设计目标是提高网络的吞吐量和降低网络的时延。仿真结果表明，我们的NCAC-MAC可以提高网络性能在一般情况下。
Cooperative communication, which utilizes neighboring nodes to relay the overhearing information, has been employed as an effective technique to deal with the channel fading and to improve the network performances. And network coding, which combines several packets together for transmission, is very helpful to reduce the redundancy at the network and to increase the overall throughput. Introducing network coding into the cooperative retransmission process, enables the relay node to assist other nodes while serving its own traffic simultaneously. To leverage the benefits brought by both of them, an efficient Medium Access Control (MAC) protocol is needed. In this paper, we propose a novel network coding aware cooperative MAC protocol, namely NCAC-MAC, for wireless networks. The design objective of NCAC-MAC is to increase the throughput and reduce the delay of the network. Simulation results reveal that our NCAC-MAC can improve the network performance under general circumstances.