公开(公告)号：US20230379846A1

公开(公告)日：2023-11-23

申请号：US18247933

申请日：2021-07-19

Applicant: ZTE CORPORATION

Inventor： Song CHEN ,  Xuelin LI ,  Yenan BIE

IPC: H04W56/00

CPC classification number: H04W56/001

Abstract: Disclosed are a clock synchronization circuit, a control method, a printed circuit board and a communication device. The clock synchronization circuit includes an external reference signal processing module, a phase detector, a voltage control conversion module, a clock generator, and a first frequency divider.

公开(公告)号：US20230155560A1

公开(公告)日：2023-05-18

申请号：US17919784

申请日：2021-04-21

Applicant: ZTE CORPORATION

Inventor： Song CHEN ,  Jie LIN ,  Hao CHEN

IPC: H03G3/30

CPC classification number: H03G3/3036 ,  H03G2201/103 ,  H03G2201/307

Abstract: Provided are automatic level control (ALC) circuit, signal source, method for controlling signal source output power, and storage medium. The ALC circuit includes: at least two stages of ALC loops, each ALC loop including an amplifier, a coupler, a power detector, and an attenuation control module connected sequentially. An output end of an adjustable attenuator is connected to an input node of first stage of ALC loop; an output node of each stage of ALC loop, other than last stage of ALC loop, is connected to a normally on end of a two-way single-on switch, a first gating end of the two-way single-on switch is connected to an input node of a next stage of ALC loop, and the output node of the last stage of ALC loop and a second gating end of each two-way single-on switch are connected to an output end of the ALC circuit.

公开(公告)号：US20220103282A1

公开(公告)日：2022-03-31

申请号：US17426142

申请日：2020-01-19

Applicant: ZTE CORPORATION

Inventor： Yuanbin ZHANG ,  Yan YUAN ,  Song CHEN

IPC: H04J3/16

Abstract: Provided are a client signal transmission method, apparatus and system and a computer-readable storage medium. The method includes mapping a client signal into a predetermined container corresponding to the client signal; mapping the predetermined container into the corresponding number of first code blocks in a payload area of an optical transport network frame and inserting special idle code blocks during the mapping for rate compensation, where the first code blocks are obtained by dividing the payload area of the optical transport network frame; and sending the optical transport network frame carrying the predetermined container and configuration information of the predetermined container.