基于RS-Polar编码的机载战术网络MAC协议  

MAC Protocol Based on RS-Polar Coding for Airborne Tactical Network

作　　者：赵玮[1] 郑博[1] 张衡阳[1] 毛玉泉[1] 

机构地区：[1]空军工程大学信息与导航学院,西安710077

出　　处：《计算机工程》2017年第12期83-87,共5页Computer Engineering

基　　金：国家自然科学基金(61202490)

摘　　要：针对机载战术网络中节点的高速运动、大尺度稀疏分布、数据业务多样等特点,以及在时敏信息传输时高可靠、低时延的服务质量需求,提出一种基于RS-Polar编码技术的随机接入多信道媒质接入控制协议。采用RS-Polar级联的纠错编码技术、多包接收技术,使其在不采用信道预约和时隙分配的机制下仍然能够确保分组传输的实时性和可靠性,并有效提高网络吞吐量。通过建立突发包传播阶段的信道碰撞模型和接收阶段多包接收模型,理论推导了分组成功传输概率、分组端到端时延和网络吞吐量的数学表达式。仿真结果表明,该协议的分组端到端时延小于2 ms,当负载小于1 000 packet/s时,分组成功传输概率高于99%,能够有效满足机载战术网络性能需求。For the features of high speed moving, sparse distribution, diversity of data service, etc. , and Quality of Service （QoS） demand of high reliability and low latency when transmitting time-sensitive information in airborne tactical networks,a random access multi-channel Medium Access Control（MAC） protocol is proposed based on Reed Solomon Polar（RS-Polar） coding technology. The proposed protocol adopting error correcting coding technology of RS-Polar cascaded and the multi-packet reception technology, ensures the real-time and reliability of packet transmission without the use of channel reservation and time-slot allocation, and improves the network throughput effectively. By establishing the channel collision model and the multi-packet reception model in the burst packet propagation stage, the mathematical expressions of packet success probability, packet end-to-end delay and network throughput are derived. Simulation results show that packet end-to-end delay of the protocol is less than 2 ms, and the packet success probability is higher than 99% when the load is less than 1 000 packet/s, can meet the performance requirements of the airborne tactical network effectively.

关 键 词：机载战术网络 媒质接入控制协议 RS-Polar编码 低时延 高可靠 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]