Aiming at the problem that Link-16 data link can not satisfy the requirements of sensitive information with reliable transmission when precision strike of moving target is needed,this paper proposed a MAC protocol based on multi-channel priority Statistics (MCPS).MCPS protocol uses different priorities thresholds and channel occupancy statistic value to determine whether data packets should be sent.Thereby,the method greatly reduces channel conflict,guarantees a data transmission in real-time at the samee.The simulation results show that the Link-16 data delay increases sharply with an increasing nodes,but MCPS protocol End to End Delay constants in 3～4ms.As network traffic increases,Link-16 system can't carry the heavy traffic and lead to severe packet loss.But MCPS can satisfy protocol requirements of high-traffic network and keep the success rate of send is not less than 95％ at first time.%针对Link-16数据链无法满足未来战争中为实现移动目标精确打击而提出的时敏信息可靠传输要求的问题,提出一种基于多信道优先级统计(MCPS)的MAC协议.MCPS协议将不同优先级业务发送的门限阈值与反应信道忙闲情况的信道占用统计值作为判定数据包是否能够发送的条件,从而极大降低信道冲突,同时保证数据发送的实时性.仿真结果表明,随网络节点增多,Link-16数据链延时急剧增大,而MCPS协议的端到端延时恒定在3～4毫秒内；随着网络业务量增大,Link-16系统吞吐量无法承载持续增大的业务量而导致严重的丢包率,MCPS协议则能够满足高业务量网络的要求,并保障数据包一次发送的成功率不低于95％.
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