一种基于多信道统计的Ad Hoc网络MAC层协议  

An Improved Protocol of Ad Hoc Based on Multichannel Statistics on MAC Layer

作　　者：卞东亮[1] 张红梅[1] 彭沙沙[1] 赵玉亭 

机构地区：[1]空军工程大学理学院,陕西西安710051 [2]国防科技工业(西北)特种制造技术研究应用中心,陕西西安710072

出　　处：《空军工程大学学报（自然科学版）》2013年第1期80-84,共5页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：陕西省电子信息系统综合集成重点实验室基金资助项目(201107Y16)

摘　　要：针对现代战场对新型数据链提高实时精确打击能力,在网络高负载时传输低延时的要求,以Ad Hoc网络为基础,其相应MAC层提出了一种基于多信道优先级统计的算法(PSMC)。协议采用将优先级阈值与信道统计作对比的方式,判定数据是否发送。同时采用时槽、信元等机制保障数据发送的可靠性。PSMC协议能够保证数据的成功发送延时维持在极低水平,较好地满足各优先级业务的QoS,尤其对较高优先级的业务提供了实时、安全的保障;较之经典的ALOHA、Slotted ALOHA协议,结果表明PSMC协议可以承载较大的流量负荷,保证较高的吞吐量,甚至在网络超载的情况下,通过截流的方式仍然能够保障整个网络系统继续工作,不至于快速崩溃。For improving real-time accurate strike capability and the low delay transmission in high traffic-load of new data link in the modern battlefield,the MAC layer adopts an improved algorithm named Priority Statistic based on Multichannel Access Method（PSMC）with Ad Hoc network as a basis.In the protocol the mode of comparing the priority threshold value with the channel occupancy statistics is adopted to determine whether to transmit the data or not.Also mini-slot and cell are adopted to protect data transmission reliability.Simulation results show that PSMC protocol can ensure that successful sending of data be maintained at the level of very low delay and satisfy the QoS of every Priority,especially provide real-time,safe guarantee for the high-priority.Compared to classic protocol of ALOHA,Slotted ALOHA,the results show that PSMC can carry heavy traffic load and ensure high throughput.Even in the case of overloading,it also can go on working with throttling back traffic.

关 键 词：移动自组织网 数据链 多信道 介质访问控制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]