高效低时延分级多PAN太赫兹无线网络MAC层优化协议  

Efficient and Low Latency MAC Layer Optimization Protocols for Hierarchical Multi-PAN Terahertz Wireless Networks

作　　者：刘洋[1] 任智[1] 古金东 周逊 LIU Yang;REN Zhi;GU Jindong;ZHOU Xun(School of Communication and Information Engineering,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]重庆邮电大学通信与信息工程学院,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》2024年第8期1966-1971,共6页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61971080)资助.

摘　　要：针对现有分级多PAN太赫兹无线网络MAC(Medium Access Control)协议中存在的子网形成方案不合理以及私有CTA(Channel Time Allocation)与子网内实际负载不匹配等问题,提出了一种高效低时延的MAC层优化协议.该协议采用基于泛听的按需形成子网机制避免了子网分布不均匀以及因子网形成后没有节点加入而造成的私有CTA资源浪费的问题.在子网形成后,子微微网协调器(Piconet Coordinator,PNC)根据子网内实际负载情况自适应选择私有CTA时隙资源优化机制,让有数据传输需求的节点及时将数据发出.仿真结果表明,所提出的方案能有效地降低数据帧平均接入时延,提高吞吐量以及数据帧的传输成功率.To resolve the problems of unreasonable subnet formation scheme and mismatch between private CTA and actual load within the subnet in the existing hierarchical multi-PAN terahertz wireless network MAC(Medium Access Control)protocol,an efficient and low latency MAC layer optimization protocol is proposed.The protocol adopts a flooding-based on-demand subnet formation mechanism to avoid the problems of uneven distribution of subnets and the waste of private CTA resources due to the lack of nodes joining after the formation of factor networks.After the subnetwork is formed,the submicronet coordinator(PNC)adaptively selects the private CTA time slot resource optimization mechanism according to the actual load situation within the subnetwork,so that the nodes with data transmission needs can send out the data in time.The simulation results show that the proposed scheme can effectively reduce the average access delay of data frames,improve the throughput as well as the transmission success rate of data frames.

关 键 词：太赫兹 分级 多PAN 无线网络 媒体访问控制协议 低时延 

分 类 号：TN915[电子电信—通信与信息系统]