Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (20): 6-9.DOI: 10.3778/j.issn.1002-8331.2009.20.002

• 博士论坛 • Previous Articles     Next Articles

Research on MAC protocol supporting cooperative communication

YANG Cai-hong,ZHANG Peng,WANG Fu-rong,XU Zheng-guang   

  1. Department of Electronics and Information Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
  • Received:2009-03-03 Revised:2009-04-23 Online:2009-07-11 Published:2009-07-11
  • Contact: YANG Cai-hong

支持协作通信的MAC协议研究

杨彩虹,张 鹏,王芙蓉,徐争光   

  1. 华中科技大学 电子与信息工程系,武汉 430074
  • 通讯作者: 杨彩虹

Abstract: Cooperative communication has been proposed recently as an effective way to achieve spatial diversity.With cooperation,each single-antenna node shares antenna to generate a virtual multiple antenna system that achieves more reliable communication.However,more nodes conscribed for one communication inevitably induces complex medium access interactions.Hence Medium Access Control(MAC) should be reinvestigated.This paper introduces a uniform cooperative architecture and proposes a cooperative MAC protocol which can support different cooperative protocols and variable number of relay nodes.Simulation results show that the cooperative MAC protocol can dramatically improve the performance of the network.

Key words: cooperative communication, opportunistic relaying, distributed space-time coding, Medium Access Control(MAC) protocol

摘要: 协作通信被视为一种可以获取空间分集的有效方法。通过协作,单天线的节点可以共享天线组成一个虚拟的多天线系统,以获得更加可靠的数据传输。然而,通信中更多节点的介入不可避免地使得接入访问更加复杂,因此需要重新进行MAC协议的相关研究。介绍了一种支持协作通信的通用框架,并提出了一套协作MAC协议。该协议不仅可以支持各种不同的协作方式,而且可以支持不同个数的中继节点。仿真结果显示,协作MAC协议能够显著提高网络的性能。

关键词: 协作通信, 机会中继, 分布式空时编码, 媒体访问控制协议