无线MIMO网络中一种改进的CSMA/CA协议设计  

An Improved CSMA/CA Protocol Design in Wireless MIMO Networks

作　　者：朱林 孙璐 邹洪森 齐玉峰 ZHU Lin;SUN Lu;ZOU Hongsen;QI Yufeng(State Grid Ningxia Electric Power Co.,LTD.,Yinchuan 750002,China;State Grid Ningxia Electric Power Co.,LTD.,UHV Company,Yinchuan 750002,China;Wuxi Internet of Things Innovation Center Co.,LTD.,Wuxi 214000,Jiangsu,China)

机构地区：[1]国网宁夏电力有限公司,银川750002 [2]国网宁夏电力有限公司超高压公司,银川750002 [3]无锡物联网创新中心有限公司,江苏无锡214000

出　　处：《科技和产业》2025年第5期72-77,共6页Science Technology and Industry

基　　金：国网宁夏电力有限公司科技项目(5229CG23000G)。

摘　　要：针对当前各类应用场景中物联网终端因数量剧增、体积小型化趋势而带来对传输并发性能和低能耗的需求,提出一种基于物理层MIMO(多输入多输出)技术的改进MAC(媒体接入控制)层CSMA/CA(载波侦听多路访问/冲突避免)协议设计。协议分别通过简化终端执行CSMA/CA协议复杂度、采用MIMO实现多终端并发接入的方式进行跨层设计,使得终端设备可简单、便捷接入网络系统。对所提协议吞吐量性能进行分析,通过仿真验证改进协议的有效性和理论分析的准确性,不仅为CSMA/CA协议的重新设计提供了理论研究补充,也为工程应用提供了实践指导。Regarding the increasing number of IoT devices and the trend towards miniaturization,which require high concurrent transmission performance and low energy consumption,an improved MAC(media access control)layer CSMA/CA(carrier sense multiple access with collision avoidance)protocol design is proposed based on physical layer MIMO(multiple input multiple output)technology.It simplifies the complexity of executing the CSMA/CA protocol on terminals and employs MIMO to achieve concurrent access for multiple terminals through cross-layer design,and allows terminal devices to easily and conveniently access the network system.An analysis of the throughput performance of the proposed protocol was presented,and its effectiveness and the accuracy of the theoretical analysis were verified through simulation,which not only provides a theoretical supplement to the redesign of the CSMA/CA protocol but also offers practical guidance for engineering applications.

关 键 词：MIMO(多输入多输出) CSMA/CA(载波侦听多路访问/冲突避免) 吞吐量 性能分析 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]