一种自适应的太赫兹无线个域网高效定向MAC协议

任智; 吕昱辉; 徐兆坤; 邹明芮; 田洁丽

doi:10.11999/JEIT180306

一种自适应的太赫兹无线个域网高效定向MAC协议

doi: 10.11999/JEIT180306

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成都　610000

基金项目: 国家自然科学基金(61379159)，重庆市基础与前沿研究计划项目(cstc2015jcyjBX0085)

详细信息

作者简介:
任智：男，1971年生，教授，博士生导师，研究方向为太赫兹无线个域网和机会网络

吕昱辉：男，1993年生，硕士生，研究方向为太赫兹无线个域网定向MAC协议

徐兆坤：男，1993年生，硕士生，研究方向为太赫兹无线个域网定向并行MAC协议

邹明芮：女，1986年生，助理研究员，博士，研究方向为太赫兹无线网络MAC层协议

田洁丽：女，1992年生，硕士生，研究方向为太赫兹无线个域网跨PAN数据传输

通讯作者:
吕昱辉　lvyuhui_cqupt@126.com

中图分类号: TP393.04
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- 被引次数: 0
出版历程
- 收稿日期: 2018-04-02
- 修回日期: 2018-08-16
- 网络出版日期: 2018-09-12
- 刊出日期: 2019-01-01

An Adaptive Directional MAC Protocol for Terahertz Wireless Personal Networks

1.
Chongqing Key Laboratory of Mobile Communication Technology, Chongqing University of Post & Telecommunications, Chongqing 400065, China
2.
Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Chengdu 610000, China

Funds: The National Natural Science Foundation of China (61379159), The Chongqing Basic and Frontier Research Project (cstc2015jcyjBX0085)

摘要

摘要:
针对现有太赫兹无线个域网定向MAC协议存在的波束训练开销和入网时延偏大以及Beacon, S-CAP时段时隙利用不足问题，该文提出一种自适应的定向MAC协议——AD-MAC，自适应地在静态场景下采用全网协同波束训练，在动态场景下节点基于历史信息快速回复波束训练帧，同时使用反向监听策略减小同扇区节点的帧碰撞概率，并且通过时隙复用在Beacon和S-CAP时段并行发送控制帧和数据帧。理论分析表明了AD-MAC协议的有效性，仿真结果显示：相较于ENLBT-MAC等典型协议，AD-MAC在静态场景下的波束训练开销和节点平均入网时延分别降低了约21.84%和22.70%，在动态场景下上述二指标则分别减小了约18.7%和13.07%。
- 无线个域网 /
- 太赫兹 /
- MAC协议 /
- 定向
Abstract:
To reduce the beamforming training cost and network delay, make the best of Beacon and S-CAP sub-period in the existing Terahertz Wireless Personal Access Network (TWPAN) directional MAC protocols, an Adaptive Directional MAC (AD-MAC) protocol for TWPAN is proposed. AD-MAC adaptively uses the entire network cooperative beam training in a static scenario, and makes network nodes quickly respond to beam training frames based on historical information in a dynamic scenario. The reverse listening strategy is used to reduce the collision probability of same sector nodes. The control frame and data frame are transmitted simultaneously in the Beacon and S-CAP slot using time-slot reuse. Theoretical analysis verifies the effectiveness of AD-MAC. Also, simulation results show that, comparing with ENLBT-MAC, AD-MAC reduces about 21.84% of beamforming training cost and 22.70% of the average network delay in static scene, and reduces about 18.7% of beamforming training cost and 13.07% of the average network delay in dynamic scene.
- Wireless personal access networks /
- Terahertz /
- MAC protocols /
- Orientation

HTML全文

图 1 波束训练开销比较

下载: 全尺寸图片幻灯片

图 2 平均入网时延比较

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图 3 MAC层吞吐量比较

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图 4 平均数据帧延迟比较

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表 1 公共仿真参数

参数(单位)	数值
节点数目(个)	4,7,10,13,16
波束宽度(°)	5
传输速率(Gbps)	10
收发端距离(m)	10
仿真时间(s)	10
超帧周期(ms)	10
节点缓存(Mb)	10
发包间隔(ms)	0.08
数据帧长(bit)	64000

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