【摘要】 提出了一种无线Ad hoc网络中基于跨层设计的同步动态令牌协议(CLSDTP)。采用了一种新的快速令牌传输机制,能很好的适应网络拓扑变化。提出了一种信道接入冲突避免算法,在单信道条件下较好的解决了暴露隐藏终端问题,大大提高了空间复用度。实现了路由协议和MAC协议的信息共享,大大压缩了系统开销,解决了使用表驱动路由的开销问题和路由信息交互的时效性问题,使得路由机制能更好的响应系统拓扑变化。更多还原

【Abstract】 This paper proposes a novel Cross-layer Synchronous Dynamic Token Protocol(CLSDTP) in single channel that is based on token-passing scheme.The protocol introduces a token relay algorithm which is fast and adaptive to topology variation,presents a collision avoidance algorithm which solves the exposed and hidden terminal problem through the information of network topology and current data transmission carried by the token.This information in the token is also used by the routing algorithm.The routing discovery and maintenance have been completed in the course of token relay.The short token rotation period ensures that the routing information can be exchanged in time.The CLSDTP improves the spatial multiplexing compared with the RTS/CTS access mechanism.In the same time,the system overhead has been largely depressed and the time effectiveness has been improved because of the information sharing by the MAC and routing layer.更多还原