计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (11): 78-80.

• 网络、通信、安全 • 上一篇    下一篇

DAMA协议在临近空间通信网中的时延分析

余江明1,朱子行2,梁 俊2,徐前锋3,赵 辉2   

  1. 1.空军工程大学,西安 710077
    2.空军工程大学 电讯工程学院,西安 710077
    3.空军通信军事代表室,福州 350002
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-11 发布日期:2011-04-11

Analysis of time delay in near space communication network based on DAMA

YU Jiangming1,ZHU Zihang2,LIANG Jun2,XU Qianfeng3,ZHAO Hui2   

  1. 1.Air Force Engineering University,Xi’an 710077,China
    2.The Telecommunication Engineering Institute,Air Force Engineering University,Xi’an 710077,China
    3.Air Force Communication Military Representative Agency,Fuzhou 350002,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-11 Published:2011-04-11

摘要: 在临近空间通信网络中,各个用户要共享带宽有限的无线信道,因此,需要设计一种有效的MAC层协议。提出将按需分配(DAMA)多址接入协议应用到临近空间通信网中,运用排队理论建立了分析模型,对在固定帧长条件下该协议的平均端到端时延性能进行了理论分析,并利用OPNET仿真软件进行仿真验证。结果表明,理论分析能较准确地估计网络的平均端到端时延。

关键词: 临近空间通信网, 按需分配, 排队论, 时延, OPNET软件

Abstract: In the near space communication network,limited wireless resources are shared by every users,thus,an effective Media Access Control(MAC) protocol should be designed.Demand Assignment Multiple Access(DAMA) protocol is applied to near space communication network,an analytical model is presented according to queue theory,to evaluate the mean end-to-end delay of packets traversing a near space link with a DAMA scheduling strategy and fixed frame length,a simulation model is also established using OPNET software.Simulation results show theoretic analysis can accurately estimate the mean end-to-end delay of the network.

Key words: near space communication network, Demand Assignment Multiple Access(DAMA), queue theory, time delay, OPNET