电子学报 ›› 2016, Vol. 44 ›› Issue (2): 308-318.DOI: 10.3969/j.issn.0372-2112.2016.02.010

• 学术论文 • 上一篇    下一篇

MIMO Ad Hoc网络中基于正交阵列的拓扑未知多址接入协议

陈丹1,2, 刘卜华1, 闫茂德1, 李建东2, 李长乐2   

  1. 1. 长安大学电子与控制工程学院, 陕西西安 710064;
    2. 西安电子科技大学综合业务网络理论及关键技术国家重点实验室, 陕西西安 710071
  • 收稿日期:2014-07-15 修回日期:2015-05-25 出版日期:2016-02-25 发布日期:2016-02-25
  • 通讯作者: 陈丹
  • 作者简介:刘卜华 男,1991生于陕西省西安市.长安大学电子与控制工程学院研究生,主要研究方向控制理论与应用、控制系统设计及智能监测.
  • 基金资助:

    国家自然科学基金(No.61231008);陕西省工业科技攻关项目(No.2014K05-59,No.2015GY033);中央高校基本科研业务费专项资金资助项目(No.2014G2320006,No.2014G3322008,No.310832151089)

Orthogonal Array Based Topology Transparent MAC Protocol for MIMO Ad Hoc Networks

CHEN Dan1,2, LIU Bu-hua1, YAN Mao-de1, LI Jian-dong2, LI Chang-le2   

  1. 1. School of Electronic and Control Engineering, Chang'an University, Xi'an, Shaanxi 710064, China;
    2. State Key Lab of Integrated Service Networks, Xidian University, Xi'an, Shaanxi 710071, China
  • Received:2014-07-15 Revised:2015-05-25 Online:2016-02-25 Published:2016-02-25

摘要:

针对支持MIMO(Multiple Input Multiple Output)的Ad Hoc网络,提出了基于正交阵列的拓扑未知多址接入协议MIMO_O_TTMA(MIMO Supported Orthogonal Array Based Topology Transparent Multiple Access).协议利用正交阵列为节点分配若干时隙,在每个分配时隙中,节点通过与目的节点交互RTS/CTS(Request To Send/Clear To Send)分组来确定发送的数据流数,以机会地利用MIMO的空间复接来提升网络性能.MIMO_O_TTMA在保证节点在一帧内至少有一个时隙能够无干扰地传输的基础上,允许协议的帧长能在一定的范围内进行灵活选择,从而为协议性能的优化提供了更为有利的条件.为评估MIMO_O_TTMA的性能,利用概率方法分析了协议的吞吐量性能,数值结果表明,与已有拓扑未知MAC(Media Access Control)相比,MIMO_O_TTMA有效提升了网络吞吐量.

关键词: 多输入多输出, Ad Hoc网络, 媒体接入控制协议, 正交阵列

Abstract:

An orthogonal array based topology transparent MAC(Media Access Control) protocol named MIMO_O_TTMA(MIMO Supported Orthogonal Array Based Topology Transparent Multiple Access) is proposed for MIMO(Multiple Input Multiple Output) Ad Hoc networks.The protocol utilizes the orthogonal arrays to assign slots for network nodes, in each assigned slot, the transmitters determine the number of streams to be used by exchanging the RTS/CTS(Request To Send/Clear To Send) packets with their destination nodes, in this way, the nodes can opportunistically use the spatial multiplexing(SM) of MIMO to enhance the network performances.In addition to ensuring at least one collision-free slot in a frame for each node, the MIMO_O_TTMA allows the frame length to be flexibly chosen in certain range, which provides favorable conditions for optimizing the protocol performances.To evaluate the performance the MIMO_O_TTMA, a probability method is used to analysis the throughput of the protocol.Numerical results show that, compared with the existing topology transparent MAC, MIMO_O_TTMA can effectively improves the network throughputs.

Key words: MIMO(Multiple Input Multiple Output), Ad Hoc networks, MAC(Media Access Control) protocol, orthogonal arrays

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