基于WLAN信标的连续时钟同步算法

上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (4): 331-335.

• 通信与信息工程 • 下一篇

基于WLAN信标的连续时钟同步算法

陈健杨兴随

上海大学通信与信息工程学院，上海 200072

收稿日期:2008-03-10 出版日期:2009-08-30 发布日期:2009-08-30
通讯作者: 陈健(1965～)，男，副研究员,博士,研究方向为数字通信及接入网. E-mail:chenjian@shu.edu.cn
基金资助:
上海市科委基金资助项目(06DZ22006);上海市重点学科建设资助项目(J50104)

Continuous Clock Synchronization Based on WLAN Beacon

School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

Received:2008-03-10 Online:2009-08-30 Published:2009-08-30

摘要/Abstract

摘要：

IEEE 802.11无线局域网自有的时钟同步协议的定时同步功能（timing synchronization function,TSF）采用偏移量补偿的方式.基于这种TSF满足不了实时应用对同步精度的要求,提出一种基于WLAN信标的主从结构式连续时钟同步算法.该算法具有同步精度高、时钟连续变化、抗信标延迟和丢失能力强等优点.

关键词: 无线局域网；信标；连续时钟同步；最小二乘法；容错

Abstract:

The requirement of clock synchronization cannot be met in realtime application based on the timing synchronization function(TSF) of IEEE 802.11 WLAN, which uses offset compensation as the clock synchronization protocol. This paper introduces a continuous clock synchronization algorithm (CCSA) based on the beacon value of WLAN to realize master/slave clock synchronization. The proposed algorithm has the advantages of high synchronized precision, continuous tracking, beacon delay and losing tolerance.

Key words: WLAN; beacon; continuous clock synchronization; least square; fault tolerance

中图分类号:

TN915.6

陈健杨兴随. 基于WLAN信标的连续时钟同步算法[J]. 上海大学学报(自然科学版), 2009, 15(4): 331-335.

CHEN Jian, YANG Xin-Sui. Continuous Clock Synchronization Based on WLAN Beacon[J]. Journal of Shanghai University（Natural Science Edition）, 2009, 15(4): 331-335.

基于WLAN信标的连续时钟同步算法

Continuous Clock Synchronization Based on WLAN Beacon

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