《计算机应用研究》|Application Research of Computers

多中继协作无线网络中基于随机线性网络编码的调度方案

Scheduling scheme for multi-relay cooperation based on random linear network coding in wireless network

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作者 王练,白佳洁,王萌,任治豪
机构 重庆邮电大学 计算机科学与技术学院,重庆 400065
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文章编号 1001-3695(2019)08-056-2504-05
DOI 10.19734/j.issn.1001-3695.2018.01.0047
摘要 为进一步提升多中继协作无线网络传输效率,提出一种基于随机线性网络编码的动态规划方案,以最小化重传次数为目标,综合考虑各中继节点的有效信息与链路传输可靠性,实现多中继协同转发,以提升传输有效性。在各转发链路相互独立的情况下,针对整个传输过程,自适应地选取状态转移路径,确定最优转发节点。仿真结果表明,方案相比随机调度机制能显著提升平均吞吐量,减少重传次数。在降低对反馈信息依赖和减少反馈开销的同时,其性能皆逼近完全反馈下基于贪心算法的调度机制。
关键词 无线网络; 随机线性网络编码; 多中继; 调度
基金项目 重庆市教委科学技术研究项目(KJ1400408)
本文URL http://www.arocmag.com/article/01-2019-08-056.html
英文标题 Scheduling scheme for multi-relay cooperation based on random linear network coding in wireless network
作者英文名 Wang Lian, Bai Jiajie, Wang Meng, Ren Zhihao
机构英文名 Institute of Computer Science & Technology,Chongqing University of Posts & Telecommunications,Chongqing 400065,China
英文摘要 To further improve the multi-relay cooperative transmission efficiency in wireless networks, this paper proposed a dynamic programming scheduling based on network coding with less feedback(DPNC-LF). The DPNC-LF considered the effective information of each relay and the transmission reliability of each link, and implemented the multi-relay cooperative forwarding to improve transmission effectiveness with the minimum number of retransmissions. In the condition of each link independent mutually and the state transition path selected adaptively, the DPNC-LF determined the optimal forwarding node for the entire transmission process. The simulation results show that the algorithm is more effective than random selection scheduling in average throughput and reducing the number of retransmission. With the feedback information dependence reduced and the feedback overhead decreased, the performance of the scheme is close to the performance of greedy algorithm scheduling.
英文关键词 wireless network; random linear network coding; multiple-relay; scheduling
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收稿日期 2018/1/29
修回日期 2018/3/19
页码 2504-2508
中图分类号 TP393
文献标志码 A