Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (2): 68-71.DOI: 10.3778/j.issn.1002-8331.2011.02.022

• 网络、通信、安全 • Previous Articles     Next Articles

Research of MAC protocol in near space communication network

ZHU Zihang1,LIANG Jun1,YU Jiangming2   

  1. 1.The Telecommunication Engineering Institute,Air Force Engineering University,Xi’an 710077,China
    2.Air Force Engineering University,Xi’an 710051,China
  • Received:2009-08-11 Revised:2009-10-26 Online:2011-01-11 Published:2011-01-11
  • Contact: ZHU Zihang

临近空间通信网MAC层协议研究

朱子行1,梁 俊1,余江明2   

  1. 1.空军工程大学 电讯工程学院,西安 710077
    2.空军工程大学,西安 710051
  • 通讯作者: 朱子行

Abstract: The near space network has become the research focus on rapid developing of space network.Near space communication network demands higher real time and effective transmitting message,a proper medium access control protocol is designed.Based on Demand Assignment Multiple Access(DAMA) protocol,combined with free assignment,Combined Free Demand Assignment Multiple Access(CFDAMA) protocol is applied to near space communication network,OPNET simulation model is created.Simulation results show that not only CFDAMA protocol can reduce mean end-to-end network delay,guarantee the real time of message,but also promote the throughput of network.

Key words: near space communication network, Demand Assignment Multiple Access(DAMA), Combined Free Demand Assignment Multiple Access(CFDAMA), OPNET, time delay

摘要: 近年来随着空间网络应用的快速发展,临近空间网络逐渐成为新的研究热点。临近空间网络要求信息传输的实时性、有效性,对媒体接入控制(MAC)层协议的设计提出了很高的要求。在按需分配(DAMA)协议的基础上,结合自由分配,提出将混合自由按需分配(CFDAMA)协议应用到临近空间通信网中,并用OPNET仿真软件建立仿真模型。仿真结果表明,与纯DAMA协议相比,CFDAMA协议不仅能极大地降低网络的平均端到端时延,保证信息传输的实时性;而且能提高网络的吞吐量。

关键词: 临近空间通信网, 按需分配, 混合自由按需分配, OPNET软件, 时延

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