面向M2M通信的网络分层与窗口控制接入策略  

Network layering and window control access strategyfor M2M communication

作　　者：李姣军 杨川 杨凡 喻涛 杜源昌 陈征骥 LI Jiaojun;YANG Chuan;YANG Fan;YU Tao;DU Yuanchang;CHEN Zhengji(College of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;Chongqing Chuanyi Automation Co.,Ltd.,Chongqing 400700,China)

机构地区：[1]重庆理工大学电气与电子工程学院,重庆400054 [2]重庆川仪自动化股份有限公司,重庆400700

出　　处：《重庆理工大学学报（自然科学）》2023年第8期245-254,共10页Journal of Chongqing University of Technology：Natural Science

基　　金：重庆市自然科学基金面上项目(cstc2021jcyj-msxmX0251);重庆市教育委员会科学技术研究计划项目(KJQN202101115;KJQN202201157);重庆理工大学国家自然科学基金和社会科学基金项目培育计划(2022PYZ017);重庆理工大学研究生教育高质量发展行动计划资助项目(gzlcx20233082;gzlcx20233076);重庆市巴南区科技项目(KY202208153976019)。

摘　　要：针对机器与机器(machine to machine, M2M)通信场景中设备接入成功率低的问题,提出在网络分层的基础上通过窗口控制接入的算法。首先通过网络分层优化算法对通信设备分组,建立骨干接入网络模型和接入子网模型,起到缓解接入冲突的作用;然后利用窗口控制和前导码复用的方法控制每个接入时隙的接入设备数量,解决接入资源紧张、接入成功率低的问题。仿真结果表明:所提出算法相较于对比算法,网络分层优化后的设备分组数减少了43%,设备接入成功率达到100%,设备的接入时延降低85%。Aiming at the problem of low success rate of device access in machine-to-machine(M2M)communication scenarios,an algorithm for controlling access through windows based on network layering is proposed.Firstly,the communication equipment is grouped by the network hierarchical optimization algorithm,and the backbone access network model and access subnet model are established to alleviate the access conflict.Then,the number of access devices in each access slot is controlled by window control and preamble reuse,which solves the problems of limited access resources and low access success rate.The simulation results show that compared with the comparison algorithm,the number of device packets after network hierarchical optimization is reduced by 43%,the success rate of device access is 100%,and the access delay of device is reduced by 85%.

关 键 词：随机接入 网络分层 窗口控制 骨干接入网络 

分 类 号：TN929.5[电子电信—通信与信息系统]