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SYSTEM AND METHOD FOR CLOCK SYNCHRONIZATION IN A WIRELESS BACKHAUL NETWORK USING IEEE 1588 PRECISION TIME PROTOCOL
SYSTEM AND METHOD FOR CLOCK SYNCHRONIZATION IN A WIRELESS BACKHAUL NETWORK USING IEEE 1588 PRECISION TIME PROTOCOL
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机译:IEEE 1588精确时间协议的无线回传网络中时钟同步的系统和方法
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摘要
A method and system is disclosed for clock synchronization in a wireless backhaul network, based on the IEEE1588 Precision Time Protocol (PTP). The network comprises a plurality of hubs, each hub serving one or more remote backhaul modules. Each hub comprises a slave clock, which communicates with a master clock through forward and reverse links. The method comprises, for each hub, estimating the frequency drift {circumflex over (α)} and offset {circumflex over (β)} from the forward and reverse links between the master and slave clock, estimating the accuracy of {circumflex over (α)} and {circumflex over (β)}, determining the least congested link, and adjusting the frequency of the slave clock based on {circumflex over (α)} and {circumflex over (β)} from the least congested link. A fixed or variable time window size is selected to achieve a desired accuracy of {circumflex over (α)} and {circumflex over (β)}. The method may comprise estimating a maximum holdover time for maintaining synchronization with a desired confidence level.
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