摘要
无线自组网是一种无中心、全分布式的无线分组网络。同所有的分布式系统一样,网络各节点的时钟同步是Ad Hoc网络技术研究中的一个重要问题。本文针对在Ad Hoc网络中实现高精度的时钟同步提出了解决方案,将PTP协议(Precise Time Protocol)引入到Ad Hoc网络中,并在FPGA开发板上加以验证。在本文的设计中使用了软件和硬件相结合的实现方案,充分利用了软件的灵活性和硬件的快速性等特点,实现了PTP节点应有的功能,并且通过硬件获取时间戳使同步精度大大提高。
Wireless ad hoc network is a non-center,full-distributed wireless packet network.As all the distributed systems,clock synchronization of each node in the network is an important topic of research on Ad Hoc network technology.The paper comes up with a solution for synchronization with high accuracy in Ad Hoc network.In this paper PTP protocol is applied in Ad Hoc network implemented on FPGA.The design in this paper makes full use of software’s flexibility and hardware’s speed,and implements the function of PTP system.In addition,the timestamping method is based on hardware,making synchronization accuracy higher.
出处
《电子测试》
2010年第4期86-90,共5页
Electronic Test
