ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,388,557, issued on Aug. 12, was assigned to CHINA TELECOM CORPORATION LIMITED (Beijing).
"Downlink signal synchronization method and system" was invented by Qizheng Li (Beijing) and Dezhi Zhang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A downlink signal synchronization method and system are described. The method is applied to a wavelength division multiplexing passive optical network, including: when an optical network unit (GNU) is in a running state, detecting whether the synchronization of downlink signals is lost, the downlink signals comprising a management channel signal and a data channel signal; when the synchronization of the mana...