CSMA/CA和TDMA带宽分配机制在无中心无线网络中的性能研究
首发时间:2021-12-21
摘要:无线Mesh网络是解决最后一公里和快速部署网络的一种重要方法,但由于无线Mesh网络中暴露终端和隐藏终端同时存在,会导致节点间的冲突干扰概率增大、传输延时上升和信道利用率降低。本文研究了Mesh网络碰撞域内的信号碰撞机制,分析了基于载波侦听多路访问/冲突避免(CSMA/CA)协议和TDMA协议在不同网络规模下的性能,综合考虑网络时延、节点规模和节点之间的跳数等因素,论文提出了降低网络中传输时延、提高网络吞吐量的最优Mesh组网方案。
关键词: 通信与信息系统 无线Mesh网络 CSMA/CA TDMA 吞吐量
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Research on Performance of CSMA/CA and TDMA Bandwidth Allocation Mechanism in Centerless Wireless Network
Abstract:Wireless Mesh network is an important method to solve the last mile and rapid deployment of the network. However, due to the simultaneous existence of exposed and hidden terminals in the wireless Mesh network, the probability of conflicts and interference between nodes will increase, and the transmission delay will increase. And the channel utilization is reduced. This paper studies the signal collision mechanism in the collision domain of the Mesh network, and analyzes the performance of the carrier-sensing multiple access/collision avoidance (CSMA/CA) protocol and the TDMA protocol under different network scales. Take those factors such as the network delay, node size and the number of hops between nodes into consideration, the paper proposes an optimal Mesh networking scheme, which can reduce the transmission delay in the network and improve the theoretical capacity utilization of the network.
Keywords: Communication and information systems Wireless Mesh network CSMA/CA TDMA Throughput
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