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无线Mesh网GPS同步技术的研究 被引量:3

Research of synchronization technology based on GPS in wireless Mesh network
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摘要 研究了时分、空分的无线Mesh网中通信节点之间的时隙同步问题的解决方案。传统的无线Mesh解决方案中使用全向天线加异步竞争信道的模式,节点之间的干扰随着网络规模的扩大而加剧,严重影响了通信效率。同步无现Mesh网引入时分和空分的机制,使通信节点在其预先分配到的时隙和对应方向的天线上进行通信,克服了全向、异步模式中的弊端,大大提高了通信效率。研究分析了同步Mesh网较异步Mesh网点优势和特点,以及同步精度对同步Mesh网性能的重要影响。设计并实现一种基于GPS秒脉冲的时隙同步算法,并在CPLD平台上实现该算法。 The aim is to give a solution of time slot synchronization in wireless Mesh networks (WMN). The traditional solution used full directional antenna in addition with asynchronous contention channel accession mechanism. The efficiency drops because interference between nodes became extremely worse when networks scale expanded. Nodes transmit and receive data in pre-allocated time slots and antenna to reduce interferences. It raised the efficiency a lot. Works are done about discussing features and advantages of synchronous WMN comparing with asynchronous WMN, and significance of synchronization accuracy to WMN. An algorithm of time slot synchronization based on GPS second pulse signal is proposed and realized on CPLD platform.
出处 《计算机工程与设计》 CSCD 北大核心 2009年第4期824-826,829,共4页 Computer Engineering and Design
关键词 同步无线Mesh网 异步无线Mesh网 时隙同步 全球定位系统 synchronous wireless Mesh networks asynchronous wireless Mesh networks time slot synchronization global position system
作者简介 武建侠(1984-),男,河南商丘人,硕士研究生,研究方向为无线Mesh网;E-mail:clay1984@126.com 鄢楚平(1965-),男,湖北洪湖人,正研究员,研究方向为计算机通信与网络领域的新技术应用: 齐文佳(1984-),女,北京人,工程师,研究方向为嵌入式系统: 韩仲华(1975-),男,北京人,高级工程师,研究方向为移动计算技术; 程元(1979-),男,安徽淮南人,硕士研究生,研究方向为无线传感器网络及无线Mesh网。
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参考文献9

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  • 2周健.基于GPS/GIS/GSM的公路隧道运营管理系统研究[J].中国公路学报,2004,17(3):112-116. 被引量:29
  • 3尚峰,吴晓娟,李申.基于OMAP5910的车载智能移动终端的设计[J].电气电子教学学报,2007,29(1):50-52. 被引量:1
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