| 无线Mesh网络同步架构研究 |
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| 引用本文： | 汪涵,鄢楚平,韩仲华,王朝翔,刘经纬.无线Mesh网络同步架构研究[J].计算机工程与设计,2010,31(5). |
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| 作者姓名： | 汪涵 鄢楚平 韩仲华 王朝翔 刘经纬 |
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| 作者单位： | 华北计算技术研究所,北京,100083 |
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| 摘 要： | 提出了基于混合GPS同步与信标同步的无线Mesh网络同步方案,能够简化系统设计,防止同步误差逐级累积.在Mesh骨干节点间采用GPS同步,设计并实现了不依赖于CPLD等硬件的GPS时隙同步算法,简化了系统硬件设计.提出了在失去GPS后骨干节点同步修正算法,在失去GPS信号后能在一定的时间内维持系统的同步,提高了系统的可靠性.在Mesh接入节点与骨干节点之间采用改进的信标同步方案,能够在较远的距离达到10us级的同步精度.最后通过实验数据验证同步方案的同步精度.
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| 关 键 词： | 同步无线Mesh网 时隙同步 信标同步 同步架构 全球卫星定位系统 |
Research of synchronization structure in wireless Mesh network |
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| WANG Han,YAN Chu-ping,HAN Zhong-hua,WANG Chao-xiang,LIU Jing-wei.Research of synchronization structure in wireless Mesh network[J].Computer Engineering and Design,2010,31(5). |
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| Authors: | WANG Han YAN Chu-ping HAN Zhong-hua WANG Chao-xiang LIU Jing-wei |
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| Affiliation: | WANG Han,YAN Chu-ping,HAN Zhong-hua,WANG Chao-xiang,LIU Jing-wei (North China Institute of Computing Technology,Beijing 100083,China) |
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| Abstract: | A new synchronization structure which combined GPS and beacon synchronization is presented,which can prevent the accumulation of error and reduce the system complexity. GPS synchronization algorithm is used between backbone nodes. A timeslot sync-algorithm without CPLD chips is designed and implemented. A synchronization maintain algorithm is presented,which maintain system synchronization after the failure of obtaining synchronization signal from GPS. Therefore this algorithm improved system robust. Beacon... |
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| Keywords: | synchronous wireless Mesh network time slot synchronization beacon synchronization synchronization structure GPS |
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