基于SPMA协议的混合式信道负载统计方法

Hybrid Channel Load Statistical Method Based on SPMA Protocol

战术瞄准网络技术系统作为美军新一代战术数据链系统,在链路层面以"全双工"通信为基础实现了基于优先级概率统计的多址接入协议SPMA(Statistic Priority-based Multiple Access)。战术数据链的链路层协议或称MAC协议描述了节点接入无线信道的规则,采用合适的MAC协议,能够更合理地分配有限的无线带宽资源,是战术数据链的关键技术之一。本文主要对统计优先级多址接入(SPMA)协议的信道占用状态进行研究,从物理层和网络层两方面对信道占用状态进行统计,然后采用预测技术有效的估计实际的信道占用状态,设计了一种准确的混合式信道负载统计方法,有效地降低了信道冲突,保证了数据发送的实时性和高优先级数据较高的成功传输概率。

Tactical Targeting Network Technology System as a new generation of tactical data link system of American troops, on the basis of the “full-duplex communication” realizes the statistic priority-based multiple access protocol（SPMA） in the link layer. The link layer protocol or MAC protocol of tactical data link describes rules that the nodes access wireless channel. Using appropriate MAC protocol, can more reasonably allocate the limited wireless bandwidth resources, is the key technology of tactical data link. This paper mainly study the channel occupancy state of SPMA protocol, from two aspects of the physical layer and network layer to statistical channel occupancy state, then adopts prediction technology effectively to estimate the actual channel state. Designing an accurate hybrid channel load statistical method, which effectively reduce the channel conflict, ensure real-time of data and transmission probability of high priority data.