基于滑动窗口的连续无线网络编码  

Continuous wireless network coding based on sliding windows

作　　者：任智[1,2] 郑爱利[1,2] 姚玉坤[1,2] 李晴阳[1,2] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《计算机应用》2011年第9期2321-2324,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60972068);教育部留学回国人员科研启动基金资助项目(教外司留[2010]1561);重庆市自然科学基金资助项目(CSTC2009BB2085);重庆市教委科研基金资助项目(KJ090524)

摘　　要：根据无线单跳广播网络的特点,提出一种基于滑动窗口的网络编码方案——NCBSW,在待重传数据分组矩阵中设计一个按时间顺序滑动的编码窗口并在其中选择参与网络编码的分组,同时保证编码分组的可解性,从而减少数据分组的重传次数和传送时延。仿真分析结果表明:相对于NCWBR方案,NCBSW方案在数据分组的重传次数、传送时延和网络开销以及节点能耗等方面的性能更优。According to the characteristics of wireless single-hop broadcast networks, a network coding scheme based on sliding windows named NCBSW was proposed. The scheme designed a coding window which slid in a chronological order in the matrix of data packets waiting for retransmission, and the data packets used to encode were chosen from the sliding window. Meanwhile, the scheme ensured the solvability of coded packets. The simulation results show that the proposed scheme has a better performance as compared to the retransmission approach in wireless broadcasting based on network coding （NCWBR） in terms of the number of retransmission, delay, network overhead and energy consumption.

关 键 词：无线单跳广播网络 重传 网络编码 可解性 时延 

分 类 号：TN926[电子电信—通信与信息系统] TP393.032[电子电信—信息与通信工程]