一种Ad Hoc网络MAC协议接入阈值的研究  

Access Threshold of MAC Protocol in Ad Hoc Network

作　　者：郑文庆 金虎 郭建蓬 冯辉 ZHENG Wen-qing;JIN Hu;GUO Jian-peng;FENG Hui(School of Electronic Countermeasure,National University of Defense Technology,Hefei Anhui 230037,China)

机构地区：[1]国防科技大学电子对抗学院,安徽合肥230037

出　　处：《通信技术》2018年第7期1602-1607,共6页Communications Technology

摘　　要：针对Ad Hoc网络MAC协议(SPMA协议)控制信道接入时需要设定阈值的问题,为保证系统吞吐量保持在稳定状态,对SPMA协议的接入阈值问题进行研究。首先,阐述SPMA协议运行机制;其次,根据碰撞原理,得到SPMA协议接入阈值模型;最后,实现阈值对不同优先级业务的信道接入控制。仿真结果表明:在基于SPMA协议的网络场景中,通过对接入阈值的设计可抑制低优先级业务的接入,以保证信道负载保持在稳定水平和高优先级业务的Qo S质量。Aiming at the problem that the threshold setting-up is needed for controlling the channel access of Ad Hoc network MAC protocol(SPMA protocol),the access threshold of SPMA protocol is explored,thus to ensure the system throughput in a stable state,the SPMA protocol access threshold is studied.Firstly,the operation mechanism of SPMA protocol is expounded.Then,according to the collision principle,the SPMA protocol access-threshold model is acquired.Finally,the access control of threshold on different priority services is realized.The simulation results indicate that in the SPMA-based network scenario,via the design of access threshold,the access of low-priority services maybe suppressed,thus to ensure the channel load in a stable level and the QoS quality of high-priority services.

关 键 词：ADHOC网络 MAC协议 SPMA协议 接入控制 阈值 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN915[自动化与计算机技术—计算机科学与技术]