基于固定周转时延协议的UWB无线测距方法研究  

A Study on the UWB Wireless Ranging Method Based on the Fixed Turnover Delay Protocol

作　　者：李娟[1,2] 崔学荣[1] 吴春雷[1,2] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东青岛266555 [2]中国海洋大学信息科学与工程学院,山东青岛266100

出　　处：《传感技术学报》2013年第11期1552-1556,共5页Chinese Journal of Sensors and Actuators

基　　金：国家高技术研究发展计划(863计划)项目(2007AA12Z317);国家自然科学基金项目(61301139);中央高校基本科研业务费专项基金项目(13CX02026A)

摘　　要：Ultra-Wideband(UWB)技术被认为是最适合进行室内无线定位的技术,IEEE802.15.4a给出的TW-TOA(Two Way Time of Arrival)测距协议中采用的是基于时间戳报文的接收-发送周转时延消除的方法,但是同类设备在相同的环境下其周转时延是相同的,所以为了减少测距双方的数据通信量,提出了一种基于固定周转时延的测距方法;为了提高Hello帧的可靠性提出了在初次定位以及在定位过程中当周转时延发生严重漂移的情况下发送基于停-等协议的Hello报文;同时给出了与IEEE802.15.4兼容的MAC子层协议的格式,并给出了Hello报文格式以及包含品质因子的测距应答帧格式。Ultra-Wideband （UWB） technology is considered to be the most suitable for indoor wireless location. TW- TOA（Two Way Time of Arrival）Ranging protocol in IEEE802. 15.4a is based on the reception of timestamp packets to eliminate the receive-send turnover delay. The turnover delay of the same kind of equipment in the same conditions is always the same, so the fixed turnover ranging method is proposed to reduce the ranging data traffic on both sides. In order to improve the reliability of the Hello frame, the protocol is put forward that Hello packets should be sent based on the stop-wait protocol in the initial positioning stage and when the turnover delay drifts seriously during the positioning. At last, the format of MAC sub-layer, compatible with IEEE802.15.4, Hello packet and the ranging response packet with the FoM （Figure of Merit）are given.

关 键 词：超宽带 测距方法 固定周转时延 停等协议 定位 

分 类 号：TN914[电子电信—通信与信息系统]