公开(公告)号：US20230403665A1

公开(公告)日：2023-12-14

申请号：US18033830

申请日：2021-10-18

Applicant: ZTE CORPORATION

Inventor： Feng LIU ,  Li HE

IPC: H04W56/00 ,  H04J3/06

CPC classification number: H04W56/004 ,  H04J3/0667

Abstract: The present disclosure provides a time calibration method, including: determining, in response to a first cell transmitted from a first device, a first reception time corresponding to the first cell, and transmitting a second cell to the first device; and receiving a third cell that is fed back by the first device and carries a second reception time corresponding to the second cell, determining a first time offset value according to a first transmission time, the first reception time, a second transmission time corresponding to the second cell and the second reception time, and performing a time calibration according to the first time offset value. The present disclosure further provides a communication device and a computer-readable medium.

公开(公告)号：US20220360349A1

公开(公告)日：2022-11-10

申请号：US17633329

申请日：2020-07-28

Applicant: ZTE Corporation

Inventor： Linlin WANG ,  Li HE

IPC: H04J3/06 ,  H04L7/00 ,  H04L7/04

Abstract: A time synchronization method, a time synchronization sender, a time synchronization receiver and a time synchronization system are provided. The method includes: determining whether at least one parameter causing recalculation of a best master clock (BMC) algorithm changes; in a case where it is determined that the parameter changes, sending a 1588 standard-based Announce message; and in a case where it is determined that the parameter does not change, sending a keep-alive message of the Announce message. In the present disclosure, by distinguishing keep-alive messages from protocol messages, the problem that a CPU system is busy due to the processing of Announce messages is solved, thereby realizing the optimization of the 1588 protocol, and reducing the impact on the CPU.

公开(公告)号：US20180131459A1

公开(公告)日：2018-05-10

申请号：US15311192

申请日：2014-09-12

Applicant: ZTE CORPORATION

Inventor： Junhui ZHANG ,  Li HE ,  Bin WANG ,  Lin WEN ,  Hongguang ZHAO

IPC: H04J3/06

CPC classification number: H04J3/0641 ,  H04J3/0679 ,  H04J3/12 ,  H04J3/14 ,  H04L41/12

Abstract: The present document discloses a synchronization method, herein the method includes a controller determining synchronization link topology information according to physical link topology information of the synchronous network and synchronization information of a synchronous node in the synchronous network; the controller generating a synchronization rule of the synchronous node according to the synchronization link topology information; and the controller transmitting the synchronization rule and/or a request message to the synchronous node in the synchronous network according to the synchronization link topology information. The present document further discloses a controller, a synchronous node, a synchronous network, and a storage medium.

公开(公告)号：US20160013876A1

公开(公告)日：2016-01-14

申请号：US14758619

申请日：2013-12-12

Applicant: ZTE CORPORATION

Inventor： Junhui ZHANG ,  Dongjia LIU ,  Li HE ,  Liang XIA ,  Bin WANG ,  Hongguang ZHAO

IPC: H04J3/06

CPC classification number: H04J3/0667 ,  H04J3/0641

Abstract: Disclosed are a time synchronization method and system. The method comprises: an NE1 and the upstream nodes of the NE1 are classified into the first level, and the downstream nodes of the NE1 are classified into the second level, where the first level priority of the first level is higher than the second level priority of the second level; an NE3 connected to the NE1 through a PTP synchronization link in the downstream node receives a first device priority of the NE1 and the first level priority from the NE1; and after the NE3 receives the second device priority of an NE2 and the second level priority sent by the NE2 in the downstream nodes which is connected to the NE1 through the 1PPS+TOD synchronization link, determines that a clock parameter of the NE1 is optimal, and synchronizes the local clock to the NE1.

Abstract translation: 公开了一种时间同步方法和系统。 该方法包括：NE1和NE1的上游节点分为第一级，NE1的下游节点分为第一级，其中第一级的第一级优先级高于第二级优先级 的二级; 通过下游节点的PTP同步链路连接到NE1的NE3从NE1接收到NE1的第一设备优先级和第一级优先级; 在NE3接收到NE2的第二设备优先级和NE2在通过1PPS + TOD同步链路连接到NE1的下游节点发送的第二级优先级后，确定NE1的时钟参数为最佳， 并将本地时钟同步到NE1。