多跳无线网络中信道接入与分布式路由的结合

本文为多跳分布式无线网络(Ad Hoc网络)提出了一种信道多址接入与分布式路由相结合的方案.在该方案中,由扩频码实现多信道系统,各节点竞争公共信道,利用RTS/CTS对话形式来预约各业务信道,成功预约后的分组传输不会受到其他节点的干扰.并且该动态预约方法可以提供用于建立分布式路由机制的网络连通性信息.这种方案打破了信道接入层和网络层的分层概念,并以两者的结合带来了更高的带宽利用率和对网络拓扑变化的更快反应.

Unification of Multiple Access and Distributed Routing in Multihop Wireless Networks

This paper proposes an approach of unification of multiple access and distributed routing in multihop wireless Ad Hoc networks. In this approach, spread-spectrum codes are used to realize the multiple-channel system. Every node competes for the common channel, and uses a dialogue of RTS/CTS to reserve various operation channels. Packet transmission after successful reservation can avoid the interference from other nodes. And this dynamic reservation approach can provide information about the connectivity which can be used to establish distributed routing. This approach violates the separation of layers between the channel access layer and the network layer in exchange for a more efficient use of the bandwidth and a more rapid response to changes in the network topology.