Link16数据链时隙冲突概率分析  

Slot collision probability Analysis of Link16 Data Link

作　　者：任培[1] 周经伦[1] 罗鹏程[1] 刘伟[1] 

机构地区：[1]国防科技大学信息系统与管理学院,湖南长沙410073

出　　处：《火力与指挥控制》2007年第9期39-42,共4页Fire Control & Command Control

基　　金：十一五国防预研基金资助项目(513040205)

摘　　要：基于S-TDMA协议的Link16是美军目前广泛使用的一种战术数据链。时隙预约选择算法是基于S-TDMA协议的数据链实现自组织特性的关键;而时隙冲突概率则是衡量时隙预约选择算法优劣的重要指标,也是S-TDMA数据链重要的性能指标。一帧中的时隙个数、用户的报文报告率、候选时隙窗口调整因子等参数对时隙冲突概率都有重要影响。采用经典概率方法对时隙冲突概率进行分析,得到了冲突概率的数学表达;针对美军Link16数据链的一些参数,分析了它们对时隙冲突概率的影响;就如何控制时隙冲突得出了一些结论。The Linkl6, which is based on S-TDMA protocol, is a tactical data link commonly used in the US army. While slot reservation selection algorithm is key to the realization of the self-organization of data link which is based on S-TDMA protocol, the slot collision probability is an important index in evaluating the performance of slot reservation selection algorithms and S-TDMA data link. Parameters such as the number of slot in a frame, userls report rate and candidate slot window adjust factor all have important influence on the slot collision probability. Using traditional methods in probability theory, this paper analyzes the slot collision probability and derives some mathematical expressions. With respect to some parameters of Linkl6, we evaluate their influences on the slot collision probability. Finally, we draw some conclusions on how to control slot collision.

关 键 词：数据链 自组织时分多址 LINK16 时隙冲突 

分 类 号：TN92[电子电信—通信与信息系统]