通信学报 ›› 2013, Vol. 34 ›› Issue (9): 53-60.doi: 10.3969/j.issn.1000-436x.2013.09.007

• 学术论文 • 上一篇    下一篇

基于网络编码与空时编码的协作MAC协议

陈前斌1,刘剑1,酆勇2,唐伦1   

  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 重庆市公安局,重庆 400012
  • 出版日期:2013-09-25 发布日期:2017-07-05
  • 基金资助:
    长江学者和创新团队发展计划基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;重庆市自然科学基金资助项目;重庆市教委科学技术研究基金资助项目

Cooperative MAC protocol based on network coding and space-time coding

Qian-bin CHEN1,Jian LIU1,Yong FENG2,Lun TANG1   

  1. 1 Chongqing Key Lab of Mobile Communication,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
    2 Chongqing Public Security Bureau,Chongqing 400012,China
  • Online:2013-09-25 Published:2017-07-05
  • Supported by:
    The Program for Changjiang Scholars and Innovative Research Team in University;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Natural Science Foundation Project of Chongqing;The Science and Technology Research Projects of Chongqing Municipal Education Commission

摘要:

针对无线ad hoc网络中协作造成的中继效率低以及不同QoS 需求难以满足等问题,提出了一种联合网络编码和空时编码的协作MAC协议(NSTCMAC)。NSTCMAC将网络编码与空时编码技术相结合,设计出区分业务类型的协作MAC协议传输机制,以满足不同业务类型的QoS需求;进一步通过马尔科夫链模型分析了区分业务类型的协作机制及性能。仿真结果表明,相比传统的DCF、COOPMAC以及CD-MAC协议,NSTCMAC协议能更好地保证不同的QoS需求,并能有效地解决协作造成的中继效率低的问题。

关键词: adhoc网络, 协作通信, 媒体接入控制, 网络编码, 空时编码

Abstract:

Aiming at the problems in wireless ad hoc networks,such as relays’ low efficiency caused by cooperation and difficult to meet the different QoS requirements,a co e MAC protocol was proposed based on the combination of network coding and space-time coding(NSTCMAC).Based on NSTCMAC protocol with the combination of Network coding and space-time coding techniques,a kind of cooperative MAC transmission mechanism that could distinguish the type of DATA packet was designed in order to meet the QoS requirements of different types of transm Further more,cooperative transmission mechanism and its performance were analyzed through Markov chain model.When transmitting the non-real-time(NR) packets,network coding was adopted to improve the efficiency of relay nodes; when transmitting the real-time(R) packets,randomized distributed space-time coding(R-DSTC)was used to enhance the reliability of transmission.Simulation results show that NSTCMAC protocol can meet different QoS requirements better,and solve the problem of relays’ low efficiency more effectively,when compared with legacy DCF、COOPMAC and CD-MAC protocol.

Key words: ad hoc network, cooperative communication, MAC, networking coding, space-time coding

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