基于丢包区分的IEEE 802.11 MAC改进协议  

An Improved IEEE 802.11 MAC Protocol Based on Loss Distinguishing

作　　者：王涛[1] 雷婷[2] 周建存[1] 

机构地区：[1]湖南城市学院,湖南益阳413000 [2]成都工业学院,四川成都611730

出　　处：《湖南城市学院学报（自然科学版）》2016年第3期62-65,共4页Journal of Hunan City University:Natural Science

基　　金：湖南省科技厅科技计划(2014FJ6068);湖南省教育厅科学研究项目(14C0211);湖南省教育厅科学研究优秀青年项目(15B044)

摘　　要：IEEE 802.11标准对于丢包的处理流程导致在出现丢包时性能下降。本文提出一种基于丢包区分的改进协议LD-MAC。该协议在对丢包原因进行区分的基础上,在冲突丢包时只进行指数退避,在弱信号丢包时只进行速率自适应调整,从而获得性能改进。实际实验结果验证了LD-MAC协议的性能提升。The process procedure for packet loss in 802.11 MAC standard induces performance deducing when faces packet losses. In this paper, an improved protocol based on loss distinguishing, LD-MAC is proposed for solving this problem. By distinguishing packet loss causes, this protocol only incurs exponential back-off when the loss cause is collision, and only incurs rate adaptation when the loss cause is weak signal, and then the transmitting performance is improved. The result from real experiments validates the effects of the LD-MAC protocol.

关 键 词：802.11 WLAN 丢包区分 MAC协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]