Telecom Requirements for Time and Frequency ... - GPS.gov
Telecom Requirements for Time and Frequency ... - GPS.gov
Telecom Requirements for Time and Frequency ... - GPS.gov
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LTE Base Station TX <strong>Frequency</strong> ErrorTS 36.104: “Evolved Universal Terrestrial Radio Access(E-UTRA); Base Station (BS) radio transmission <strong>and</strong> reception• <strong>Frequency</strong> Synchronization (Radio Interface) requirements:– The same source shall be used <strong>for</strong> RF frequency <strong>and</strong> data clock generation.– The modulated carrier frequency of the BS observed over a period of one subframe (1ms)shall be accurate to withinBS classAccuracyY < 0.05-0.25 ppmWide Area BSLocal Area BSHome BS±0.05 ppm±0.1 ppm±0.25 ppmeNodeB<strong>Requirements</strong> at the input of the eNodeB depends on the actual implementation(<strong>for</strong> instance network limits are defined in case the frequency reference is distributed overthe physical layer, TDM or Synchronous Ethernet)The requirement applies on the radio interface
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