基于现场可编程逻辑门阵列的多优先级改进型载波感知多址协议在Ad Hoc网络中的实现和性能  

Implementation and Performance of FPGA-based Multi-priority Optimized CSMA in Ad Hoc Network

作　　者：丁洪伟[1] 陆旭[1,2] 杨志军 保利勇[1] 柳虔林[1,4] DING Hongwei;LU Xu;YANG Zhijun;BAO Liyong;LIU Qianlin(School of Information Science and Technology,Yunnan University,Kunming 650500,Yunnan,China;Kunming Detachment, Yunnan Provincial Corps of the Armed Police Force,Kunming 650051,Yunnan,China;Educational and Scientific Institute, Education Department of Yunnan Province,Kunming 650223,Yunnan,China;Yunnan Military Area Command,Kunming 650051,Yunnan,China)

机构地区：[1]云南大学信息学院,云南昆明650500 [2]武警云南省总队昆明支队,云南昆明650051 [3]云南省教育厅科学教育研究院,云南昆明650223 [4]云南省军区,云南昆明650051

出　　处：《兵工学报》2020年第9期1837-1847,共11页Acta Armamentarii

基　　金：国家自然科学基金项目(61461053、61461054)。

摘　　要：Ad Hoc网络因为无需架设网络设施、抗毁性强等特点,常用于军事领域和一些极端自然环境中。媒体访问控制层的随机多址协议在Ad Hoc网络中有着重要的应用,而多址协议的时延和可靠性是制约Ad Hoc网络传输质量的关键性因素。针对这两个关键性因素,改进传统的随机多址接入控制协议,设计改进型三维概率载波感知多址(CSMA)协议模型,可保证在到达率较高情况下依然具有较好的吞吐量,并进一步改善协议可靠性。为不同的发送节点设定不同的优先级,实现区分服务,进而增强信道资源的有效利用。结果表明:与传统的1坚持CSMA协议比较,改进型三维概率CSMA协议减少了时延且吞吐量最大值增长24.34%;根据协议原理设计基于现场可编程逻辑门阵列的多优先级改进型三维概率CSMA协议的硬件系统,可以提高Ad Hoc网络传输的可靠性。The ad hoc network is widely used in military field and some extreme natural environments because it has the characteristics of not needing to set up network facilities and strong invulnerability,etc.Random multiple access control protocol plays an important role of media access control layer in the ad hoc network,and the delay and reliability of multiple access protocol are the key factors that restrict the transmission quality.In order to solve the two key problems,the traditional random multiple access control protocol is improved,and an optimized three-dimensional probability carrier sense multiple access(CSMA)protocol model is proposed,which guarantees higher throughput and further improves the reliability of the protocol in the case of high arrival rate.At the same time,the different priorities are set for different sending nodes to achieve the purpose of differentiating services and enhance the utilization of channel resources.The results show that,compared with the traditional 1-persistent CSMA protocol,the optimized three-dimensional probability CSMA reduces the delay and increases the maximum throughput by 24.34%.According to the principle of the protocol,a hardware system of the multi-priority optimized three-dimensional probability CSMA based on field programmable gate array was designed.

关 键 词：多优先级改进型载波感知多址 可编程逻辑门阵列 Ad Hoc网络 媒体访问控制 随机多址 三维概率载波感知多址 多优先级 吞吐量 时延 

分 类 号：TN915.04[电子电信—通信与信息系统]