一种分布式混合预约多址(DHRMA)协议的研究

A distributed hybrid reservation multiple access(DHRMA)protocol for MANETs

本文在D-PRMA协议的基础上对其进行改进,提出一种分布式混合预约多址(DHRMA)协议。DHRMA协议采用混合式预约机制,并配合使用时隙表,来减小业务竞争所造成的碰撞的概率,解决隐藏终端和暴露终端问题,从而改善系统的性能并提高系统的吞吐量;同时赋予实时业务较高的优先级以满足其服务质量(QoS)的要求。另外,本文还采用了一种互同步技术,用以解决网络中节点之间的同步问题。

In this paper, an improved D- PRMA protocol named as distributed hybrid reservation multiple access （DHRMA）protocol for mobile ad hoc networks（ MANETs） is proposed. The reservation mechanism and the slot statute table are adopted in the DHRMA protocol to avoid collisions and resolve the hidden terminal and exposed terminal problems. Thus, this protocol provides a very efficient spatial reuse of the bandwidth and greatly increases the throughput. The quality of service（QoS）requirements of real - time traffic are guaranteed by giving it priority. Furthermore, an interactive synchronous technology is introduced in the scheme to realize the synchronization between the nodes in the network, which is independent on the other networks, such as GPS, etc.