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该文为多跳移动的分布式无线网络提出了一种新型的媒质接入控制 (MAC)协议 ,即公共 -发送信道式自适应获取冲突避免 (AACA- CT)协议 .在该协议中 ,每个节点预先监测记录周邻节点的信道使用情况 ,从而自适应地为自己选择发送信道 ,并且利用在公共信道上发送的 RTS分组唤起收方使用各自的发送信道而实现无冲突的通信 .它的主要思想在于资源预约可以简便地利用半双工无线电台以异步方式灵活、有效地在多个频段、多个跳频(FH)码或多个直接序列扩频 (DSSS)码上实现 ,而且不依赖于功能强大的基站或中心控制器以及有线骨干网的帮助 .性能分析和仿真结果表明 ,它能有效地克服隐藏终端和暴露终端问题 ,并且可以完全解决侵入终端问题 .
This paper proposes a new type of medium access control (MAC) protocol for multi-hop mobile distributed wireless networks, ie, public-to-send channel adaptive collision avoidance (AACA-CT) Nodes monitor the channel usage of neighboring nodes in advance so as to adaptively choose to send the channel for themselves and use the RTS packets transmitted on the common channel to arouse the receiving party to use the respective sending channel to achieve the collision-free communication. The main idea is that resource reservation can be implemented flexibly and effectively by using half-duplex radio stations in a plurality of frequency bands, multiple frequency hopping (FH) codes or multiple direct sequence spread spectrum (DSSS) codes using a half-duplex radio station, Rely on the help of powerful base station or central controller and wired backbone network.Performance analysis and simulation results show that it can effectively overcome the hidden terminal and exposed terminal problems and can completely solve the intrusion terminal problem.