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兵工学报 ›› 2020, Vol. 41 ›› Issue (2): 305-314.doi: 10.3969/j.issn.1000-1093.2020.02.012

• 论文 • 上一篇    下一篇

战术数据链网络的介质访问控制层优化控制及性能分析

杨志军1,2, 刘征1, 丁洪伟1, 柳虔林1,3   

  1. (1.云南大学 信息学院, 云南 昆明 650500;2.云南省教育厅 科学教育研究院, 云南 昆明 650223;3.云南省军区, 云南 昆明 650051)
  • 收稿日期:2019-04-11 修回日期:2019-04-11 上线日期:2020-04-04
  • 通讯作者: 杨志军(1968—),男,研究员,硕士生导师,博士 E-mail:353738698@qq.com
  • 作者简介:刘征(1994—),男,硕士研究生。E-mail:1029381131@qq.com
  • 基金资助:
    国家自然科学基金项目(61461054、61461053)

Optimal Control of Improved MAC Protocol for Tactical Data Link Networks and Its Performance Analysis

YANG Zhijun1,2, LIU Zheng1, DING Hongwei1, LIU Qianlin1,3   

  1. (1.School of Information Science and Technology,Yunnan University,Kunming 650500,Yunnan,China;2.Educational and Scientific Institute,Education Department of Yunnan Province,Kunming 650223,Yunnan,China;3.Yunnan Military Area Command, Kunming 650051, Yunnan, China)
  • Received:2019-04-11 Revised:2019-04-11 Online:2020-04-04

摘要: 为解决战术数据链中优先级问题,提出一种基于完全接入策略和非对称门限接入策略的区分优先级两级轮询控制策略,用于战术数据链网络的媒体接入控制中。在该轮询控制策略中,对战术数据链中的低优先级前哨站点采用非对称门限接入策略,对高优先级前哨站点采用完全接入策略;在网络控制站点由高优先级前哨站点转低优先级前哨站点时,将传输服务与转移查询并行处理来降低查询转换期间所耗费的时间,提高轮询系统的效率。运用马尔可夫链和概率母函数方法建立了系统的数学模型,精确解析出各个前哨站点内等待发送的平均信息分组数表达式。结合循环周期2阶特性量近似方法,解析出前哨站点内信息分组平均等待发送时间的近似表达式。仿真实验结果表明,实验值与理论值大致相等且高优先级前哨站点的服务质量优于其他站点,证明理论分析正确,该模型达到了区分优先级的目的。

关键词: 战术数据链, 介质访问控制, 轮询系统, 优先级前哨站点, 平均排队队长, 平均等待时间

Abstract: In order to solve the priority problem of tactical data link,a prioritized two-level polling control strategy based on exhaustive access strategy and asymmetric gated access strategy is proposed for media access control in tactical data link.In the polling control strategy,an asymmetric gated access strategy is adopted for the low priority outposts in tactical data link,and the exhaustive access strategy is adopted for the high priority outposts.When the network control site is transferred from the high priority outpost to the low priority outpost,the transmission service and the transfer query are processed in parallel to reduce the time cost during the query conversion,and the operating efficiency of the polling system is improved. The Markov chain and probabilistic generating function are used to establish the mathematical model of the polling system,which accurately resolves the expression of the average number of information packets waiting to be sent in each outpost. The approximate expression of the average waiting time for the information packets in the outpost is resolved by using the second-order characteristic quantity approximation method of the cyclic period. The simulated results of the proposed model show that the experimental value is approximately equal to the theoretical value,and the service quality of the high-priority outpost is better than those of other outposts,indicating that the theoretical analysis is correct,and the proposed model achieves the purpose of prioritizing. Key

Key words: tacticaldatalink, mediaaccesscontrol, pollingsystem, priorityoutpost, averagequeuelength, averagewaitingtime

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