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1. (WO2018137550) SYNCHRONIZATION ERROR REDUCTION IN COMMON PUBLIC RADIO INTERFACE (CPRI) PASSIVE OPTICAL NETWORKS (PONS)

Pub. No.:    WO/2018/137550    International Application No.:    PCT/CN2018/073244
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Fri Jan 19 00:59:59 CET 2018
IPC: H04B 10/2507
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
Inventors: LIU, Xiang
EFFENBERGER, Frank
ZENG, Huaiyu
Title: SYNCHRONIZATION ERROR REDUCTION IN COMMON PUBLIC RADIO INTERFACE (CPRI) PASSIVE OPTICAL NETWORKS (PONS)
Abstract:
A first apparatus comprises: a processor configured to generate a first synchronization message; a transmitter coupled to the processor and configured to transmit the first synchronization message to a second apparatus at a first wavelength; and a receiver coupled to the processor and configured to receive a second synchronization message from the second apparatus at a second wavelength and in response to the first synchronization message, the first wavelength and the second wavelength are based on a reduction of a latency difference between the second synchronization message and the first synchronization message, and the processor is further configured to calculate a TO between the first apparatus and the second apparatus based on the reduction.