高效低时延的太赫兹无线个域网双信道MAC协议  

Efficient and Low Delay Dual-channel MAC Protocol for Terahertz Wireless Personal Area Networks

作　　者：周海东 周逊[1,2] 任智[1] 严炎 葛理威 ZHOU Hai-dong;ZHOU Xun;REN Zhi;YAN Yan;GE Li-wei(Chongqing Key Laboratory of Mobile Communications Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Laser Fusion Research Center,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《小型微型计算机系统》2018年第9期1957-1961,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61379159)资助;中物院-川大协同创新联合基金项目(XTCT2014010)资助

摘　　要：针对现有的太赫兹无线个域网双信道MAC(medium access control)协议存在信道利用率低,数据传输延迟较大问题,提出了一种高效低时延的太赫兹无线个域网双信道MAC协议--ELD-MAC(Efficient and LowDelay dual channel MAC protocol).ELD-MAC协议通过采用"自适应省略RTS/CTS帧交互过程"机制,可以省去RTS/CTS帧交互过程来减少控制开销;采用"精简测试帧"机制,去掉4字节无用数据字段,来减少控制开销;从而达到提高信道利用率、降低数据传输延迟、提升网络性能的效果.仿真结果表明,相较于TAB-MAC协议,信道利用率提高了11.39%,数据平均延迟降低了12.63%.To address the problems existing in the present dualchannel MAC protocol for terahertz wireless area networks （T-WPANs） , including the channel utilization rate is low, and data transmission delay is high, an efficient and low delay dual-channel MAC protocol for T-WPANs, ELD-MAC, was proposed. Through the scheme, adaptive ellipsis RTS/CTS frame interaction processto omit the RTS/CTS frame interactionand reduce the control overhead, the scheme,simplified test frame, to remove the 4 byte useless data field and reduce the control overhead, so as to improve the the channel utilization, reduce the data transmission delay and improve network performance. Simulation results show that compared with the TABMAC protocol, the channel utilization is improved by 11.39%, and the average data delay is reduced by 12.63%.

关 键 词：太赫兹 双信道 MAC协议 高效 低时延 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]