一种数据链动态门限统计优先级多址接入协议  

A Data Link-Oriented Dynamic Threshold Statistical Priority Multiple Access Protocol

作　　者：程文驰[1,2] 张施施 CHENG Wen-Chi;ZHANG Shi-Shi(Xidian University,Xi’an Shaanxi 710071,China;State Key Laboratory of Integrated Services Networks,Xi’an Shaanxi 710071,China)

机构地区：[1]西安电子科技大学,陕西西安710071 [2]综合业务网理论及关键技术国家重点实验室,陕西西安710071

出　　处：《指挥与控制学报》2020年第1期75-80,共6页Journal of Command and Control

摘　　要：为实现战场态势的实时共享,通信时间延迟已经成为数据链的关键指标之一.战术瞄准网络技术在链路层采用基于统计优先级的多址接入协议,该协议可以粗颗粒度保障业务的时延服务质量,但离散优先级分类和固定门限导致队列中的高优先级业务排队造成时延.提出了基于动态门限的统计优先级多址接入协议,在链路层面将离散优先级表征转化为连续表征,将固定门限拓展为动态门限,该协议通过按需调整门限可使高优先级业务实现零排队时延.In order to realize the real-time sharing of battlefield situation, delay has become one of the key indicators of the data link.Tactical targeting network technology(TTNT) realizes the statistical priority-based multiple access protocol(SPMA) in the link layer.The protocol guarantees the delay-bound quality of service in a coarse-grained manner. The discrete priority classification and the fixed threshold cause delays in the queues of high-priority services. In this paper, a dynamic threshold based statistical priority multiple access protocol(DSPMA) is proposed, the discrete priority characterization is transformed into continuous characterization at the link layer,and then the fixed threshold is extended to the dynamic threshold. The protocol adjusts the threshold as needed to enable zero-queue delay for high-priority services.

关 键 词：统计优先级多址接入协议 战术瞄准网络技术 动态门限 时延服务质量保障 

分 类 号：E11[军事—军事理论] TN919.2[电子电信—通信与信息系统]