Directional MAC Protocol with Node Movement Perception in Terahertz Network Scenarios

doi:10.19678/j.issn.1000-3428.0059237

Abstract

Abstract: Terahertz wireless personal area networks are usually equipped with directional antennas in order to increase the data transmission distance of network devices.However,the directional antennas often fail to discover nodes and predict the position of nodes in dynamic scenarios.Based on IEEE802.15.3c,which is a MAC protocol standard for high-speed networks,and the existing Terahertz directional MAC protocol,this paper proposes a MAC protocol named NMA-MAC for sensing the movement of nodes in Terahertz networks.The protocol uses a piconet node position prediction algorithm to calculate the possible position of the node,and the location message is carried to other nodes through the control frame,so that the nodes can know the position of each other faster. The simulation results show that compared with the IEEE802.15.3 standard protocol,the proposed protocol achieves a significant improvement in the overall performance,increasing the throughput by 13.28% and transmission success rate by 4.58%,while the control cost is reduced by 30.86%.

Key words: directional antenna, Terahertz wireless personal area network, MAC protocol, movement perception

摘要： 在太赫兹无线个域网中，通常会配备定向天线以延长网络设备数据传输距离，但在使用定向天线时存在节点发现困难、动态场景下节点位置难以预知等问题。针对太赫兹网络场景，基于IEEE802.15.3c高速网络MAC协议标准以及现有太赫兹定向MAC协议，提出一种节点移动感知的定向MAC（NMA-MAC）协议。通过微微网节点位置预知算法计算节点可能移动的位置，并将位置信息通过控制帧携带给其他节点，使节点之间能够更快传递彼此的位置信息。仿真结果表明，相比IEEE802.15.3c标准协议，NMA-MAC协议的吞吐量和传输成功率分别提高13.28%和4.58%，同时控制开销降低30.86%。

关键词: 定向天线, 太赫兹无线个域网, MAC协议, 移动感知

CLC Number:

TP391

REN Zhi, GUO Li, WANG Lei, SU Xin. Directional MAC Protocol with Node Movement Perception in Terahertz Network Scenarios[J]. Computer Engineering, 2021, 47(11): 185-191.

任智, 郭黎, 王磊, 苏新. 太赫兹网络场景下节点移动感知的定向MAC协议[J]. 计算机工程, 2021, 47(11): 185-191.

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