摘要
随着宽带数字信道化接收技术的发展,无线网络节点实现了“一发多收”的传输新能力。首先,为适应节点信道化并行接收传输的网络应用,对载波侦听多址访问/冲突避免(Carrier Sense Multiple Access/Collision Avoid,CSMA/CA)随机信道接入媒体访问控制(Medium Access Control,MAC)协议进行了扩展,使得MAC协议能够有效利用节点多信道并行接收的传输能力;其次,利用Markov链模型对扩展CSMA/CA协议进行了建模分析,对协议节点的传输特性和网络吞吐量性能进行了理论分析;最后,通过仿真实验,验证了模型分析方法的有效性,并分析讨论了协议在多种网络场景下的吞吐量性能以及与协议参数的关系。
With the development of broadband digital channelized receiving technology, nodes in wireless network have been rendered a new transmission capability of “one transmitter and multiple receivers”.First, for adapting to the application of channelized parallel receiving technology with nodes in network, the random channel access MAC protocol CSMA/CA is extended so that the protocol can effectively utilize the transmission capability of nodes that employ multi-channel parallel reception. Then, the extended CSMA/CA protocol is modeled and analyzed by using Markov chain, and the transmission characteristics of protocol operation and the network throughput are theoretically analyzed. Finally, simulation experiments verify the effectiveness of the model analysis, and the throughput performance of the protocol together with the relationship between it and the protocol parameters are analyzed and discussed in various network scenarios.
作者
毛建兵
武明
MAO Jianbing;WU Ming(No.30 Institute of CETC,Chengdu Sichuan 610041,China)
出处
《通信技术》
2022年第11期1449-1455,共7页
Communications Technology
