自组织网络的互同步技术研究  

Study of interactive synchronous technology forself-organized network

作　　者：孙献璞[1] 张艳玲[1] 

机构地区：[1]西安电子科技大学通信工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2005年第2期216-219,共4页Journal of Xidian University

基　　金：国家ISN重点实验室资助项目

摘　　要：提出了一种无线自组织网络的互同步技术,以便网络能够采用基于时分多址的多址接入控制方式,更好地满足实时业务的要求.该技术通过网络节点之间时间基准的相互交换和相互控制,实现节点之间的相互同步.在这种同步方式中,所有节点周期性地发送其时间基准,任何一个节点在接收到其他节点的时间基准信号后,根据这些时间基准对本节点的时间基准进行适当的调整,使得所有节点具有相同的时间基准,从而实现了网络中所有节点之间的同步.这种同步方式既不要求各个网络节点采用高精度的时钟,也不依赖于其他网络的运行(例如GPS),同时还避免了由某个网络节点提供时间基准所造成的瓶颈效应,提高了网络运行的可靠性.An interactive synchronous technology for the wireless self-organized network is proposed, which is convenient for the network to adopt the Multiple Access Control(MAC) protocol based on Time Division Multiplex Address(TDMA) to meet the requirement of real-time traffic. The synchronization of the network is achieved by the exchange and interaction control of the time benchmark between the nodes. In this kind of synchronous technology, each node sends its time benchmark periodically. Any node should adjust its own time benchmark according to the time benchmarks of its neighbor nodes, so all the nodes in the network have the same time benchmark and realize the synchronization between them is achieved. It is indicated that this synchronous method neither needs any high precision clock for each node, nor depends on the other networks' operation (such as GPS, etc.). On the other hand, this technology also avoids the bottleneck effect which will occur when the network's time benchmark is provided by a given node, and improves the network's reliability.

关 键 词：自组织网 互同步 实时业务 

分 类 号：TN925.93[电子电信—通信与信息系统]