J4 ›› 2015, Vol. 42 ›› Issue (6): 145-151.doi: 10.3969/j.issn.1001-2400.2015.06.025

• 研究论文 • 上一篇    下一篇



  1. (1. 重庆邮电大学 移动通信技术重庆市重点实验室,重庆  400065;
    2. 电子科技大学 通信抗干扰技术国家重点实验室,四川 成都  611731;
    3. 华为技术有限公司,广东 深圳  518129;
    4. 重庆邮电大学,重庆  400065)
  • 收稿日期:2014-06-16 出版日期:2015-12-20 发布日期:2016-01-25
  • 通讯作者: 曹傧
  • 作者简介:曹傧(1983-),男,讲师,博士,E-mail: caobin@cqupt.edu.cn.
  • 基金资助:


Nash equilibrium cooperative transmission strategy considering competition

CAO Bin1,2;SUN Xi1;LI Yun1;CHEN Quan1,3;WANG Shiyan4   

  1. (1. Chongqing Key Lab. of Mobile Communications Technology, Chongqing Univ. of Posts and Telecommunications, Chongqing  400065, China;
    2. National Key Lab. of Science and Technology on Communications, Univ. of Electronic Science and Technology of China, Chengdu  611731, China;
    3. Huawei Technologies Co., Ltd., Shenzhen  518129, China;
    4. Chongqing Univ. of Posts and Telecommunications, Chongqing  400065, China)
  • Received:2014-06-16 Online:2015-12-20 Published:2016-01-25
  • Contact: CAO Bin


在协作通信中,业务流通过空闲中继节点进行数据包的转发,可以有效地提高传输速率,提升无线网络的性能.因此,大量的中继节点选取算法相继被提出.然而,现有的研究算法大部分只从中继节点带来的有利因素(例如数据包传输速率提升)出发,而忽略了业务流在同一中继节点的相互竞争,从而导致直传传输中不存在的等待回退时延,对系统性能产生了负面影响.为此,笔者考虑中继节点带来的有利因素和负面影响,引入博弈论提出了一种基于纳什均衡的协作通信传输策略(Nash Equilibrium Cooperative Transmission Strategy,NECTS).该传输策略能在保证各个业务流收益的同时最大化系统性能,进而有效提升系统吞吐量.仿真实验表明,NECTS能在利用协作通信优势的同时,避免不必要的竞争.因此,其性能优于现有方法的性能.

关键词: 协作通信, 中继选择, 竞争, 纳什均衡


In cooperative communications, employing the idle relay node for forwarding data can effectively improve the transmission rate and performance of the wireless networks. Therefore, various relay node selection algorithms are proposed. However, most of the existing algorithms just focus on the benefit caused by relay nodes, while ignoring the negative effect of the backoff duration time which does not exist in direct transmission, when more than one flow compete for the same relay node. To this end, considering both advantage and adverse impact caused by the relay node, we adopt the game-theoretic approach and propose a cooperative transmission strategy based on the Nash equilibrium, named the Nash Equilibrium Cooperative Transmission Strategy (NECTS). The NECTS can not only guarantee the gain of each flow, but also maximize the system performance, and improve the system throughput effectively. Simulation results show that the NECTS can take the advantage of cooperative communications. Meanwhile, it can avoid the unnecessary competition, and its performance outperforms that of the existing methods.

Key words: cooperative communication, relay node selection, competition, Nash equilibrium