公开(公告)号：US20170078990A1

公开(公告)日：2017-03-16

申请号：US15363299

申请日：2016-11-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuhong CHU ,  Zhidong ZHANG ,  Jun HU

IPC: H04W56/00 ,  H04W24/10 ,  H04L5/00

CPC classification number: H04W56/001 ,  H04L5/0048 ,  H04W24/10 ,  H04W36/00 ,  H04W36/18 ,  H04W56/0015 ,  H04W56/004 ,  H04W56/0045 ,  H04W56/0065 ,  H04W88/08

Abstract: Embodiments of the present invention provide a synchronization method, a synchronization apparatus, and a base station, which can implement strict synchronization between base stations with relatively low costs and relatively high security and reliability. The method includes: determining reference user equipment UE, where the reference UE can communicate with a reference base station and a to-be-synchronized base station at the same time, and the reference base station and the to-be-synchronized base station have completed frequency synchronization relative to a same clock reference source; determining timing offset between the to-be-synchronized base station and the reference base station according to a moment at which the reference base station and the to-be-synchronized base station receive a synchronization reference signal that is sent by the reference UE; and performing calibration on the to-be-synchronized base station according to the timing offset.

Abstract translation: 本发明的实施例提供了一种同步方法，同步装置和基站，其可以以相对低的成本和相对高的安全性和可靠性实现基站之间的严格同步。 该方法包括：确定参考用户设备UE，其中参考UE可以同时与参考基站和待同步基站进行通信，参考基站和待同步基站具有 完成相对于同一时钟参考源的频率同步; 根据参考基站和待同步基站接收到由参考UE发送的同步参考信号的时刻，确定待同步基站与参考基站之间的定时偏移; 并根据定时偏移对待同步的基站执行校准。

公开(公告)号：US20210076323A1

公开(公告)日：2021-03-11

申请号：US16960270

申请日：2018-03-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenyong SUN ,  Jun HU

IPC: H04W52/02

Abstract: After running an application to register and set a timer, a terminal device determines whether at least two timers that support wake-up have triggering time ranges, groups timers having the triggering time ranges, determines a triggering moment of each of M timer groups to obtain M triggering moments, determines a triggering moment of each of N timers that have no triggering time range to obtain N triggering moments, sets an earliest moment in the M triggering moments and the N triggering moments as an RTC moment, and when the RTC moment is reached, perform wake-up if the terminal device is in a sleep state.

公开(公告)号：US20170223647A1

公开(公告)日：2017-08-03

申请号：US15493280

申请日：2017-04-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun HU

IPC: H04W56/00 ,  H04L5/00 ,  H04W24/02

CPC classification number: H04W56/002 ,  H04L5/0048 ,  H04W24/02 ,  H04W56/0015 ,  H04W56/0035 ,  H04W88/08

Abstract: Embodiments of the present invention relate to a method and a system for controlling phase synchronization, and an apparatus. The method includes: determining a path from a non-reference base station to a preset reference base station, obtaining a first phase difference between every two adjacent base stations on the path, obtaining a second phase difference between the reference base station and the non-reference base station according to the first phase difference, and adjusting a non-reference phase of the non-reference base station to a reference phase of the reference base station according to the second phase difference. According to the method and system for controlling phase synchronization, and the apparatus that are provided in the embodiments of the present invention, in a single-frequency network system, phases of base stations are synchronized without a need to install a GPS antenna, so that system costs are reduced.

公开(公告)号：US20180176874A1

公开(公告)日：2018-06-21

申请号：US15895698

申请日：2018-02-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Man WANG ,  Hongzhuo ZHANG ,  Jun HU

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  H04W36/0005 ,  H04W56/004

Abstract: A synchronization method and a device in a communications network are provided. A control node obtains information about a time difference between at least one group of two adjacent network nodes in a to-be-synchronized area; determine, according to the information about the time difference between the two adjacent network nodes, a time adjustment value that needs to be used when a to-be-synchronized network node in the to-be-synchronized area is synchronized with a selected reference node; and send the determined time adjustment value to the to-be-synchronized network node, so that the to-be-synchronized network node adjusts time of the to-be-synchronized network node according to the corresponding time adjustment value. The control node is used to implement synchronization control on network nodes in the to-be-synchronized area. This solution is easy to implement, and reduces costs because there is no need to install GPS on each network node.

公开(公告)号：US20160135138A1

公开(公告)日：2016-05-12

申请号：US14983208

申请日：2015-12-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun HU

IPC: H04W56/00

CPC classification number: H04W56/0015 ,  H04B7/2696 ,  H04W56/0055 ,  H04W88/08 ,  H04W88/12

Abstract: The present disclosure discloses an air-interface-based synchronization method, a base station and its control apparatus, and a wireless communications system. By taking advantage of active random access of user equipment, a time difference between base stations is acquired by detecting a random access preamble, and a time adjustment value of a non-reference base station is acquired according to the acquired time difference and reference time of a reference base station; and the non-reference base station performs time adjustment according to the acquired time adjustment value, to complete time synchronization with the reference base station. The present disclosure can easily and effectively implement air-interface-based synchronization between base stations by using an existing wireless network, thereby achieving a technical effect in a convenient and economic manner.

Abstract translation: 本公开公开了一种基于空中接口的同步方法，基站及其控制装置以及无线通信系统。 通过利用用户设备的主动随机接入，通过检测随机接入前导码来获取基站之间的时差，并且根据获取的时间差和基准时间获取非参考基站的时间调整值 参考基站; 并且非参考基站根据获取的时间调整值执行时间调整，以完成与参考基站的时间同步。 本公开可以通过使用现有的无线网络容易且有效地实现基站之间的基于空中接口的同步，从而以方便和经济的方式实现技术效果。

公开(公告)号：US20210377103A1

公开(公告)日：2021-12-02

申请号：US17404220

申请日：2021-08-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chunrong LI ,  Jingfeng CHEN ,  Hongliang SUN ,  Jun HU

IPC: H04L12/24

Abstract: This application provides an isolation and recovery method and related network device for a case when one or more physical layer apparatuses (PHYs) in a flexible Ethernet group (FlexE group) are faulty. In the method, if a network device determines that a first overhead block corresponding to each current available PHY is stored in a corresponding memory, the network device determines that a FlexE group meets a PHY alignment condition, and starts to simultaneously read cached data from all memories. Therefore, there is no need to insert local fault LF code blocks to all clients, and there is no need to recreate a group. This effectively reduces the impact of a faulty PHY on client services carried by a normal PHY.

公开(公告)号：US20190141649A1

公开(公告)日：2019-05-09

申请号：US16220563

申请日：2018-12-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun HU ,  Haibing CAO ,  Yajun LUO

IPC: H04W56/00 ,  H04W84/10 ,  H04W72/04

Abstract: Embodiments of the present disclosure relate to the communications field, and in particular, to frequency synchronization of base stations. In an example frequency synchronization method, a first base station obtains a second frequency offset of a second base station. The first base station then determines a frequency difference between the first base station and the second base station and a first frequency offset of the first base station based on the second frequency offset and the frequency difference. The first base station then performs frequency synchronization based on the first frequency offset. In some instances, the first base station can determine, through interaction between the first base station and the second base station, the first frequency offset of the first base station without depending on a synchronous Ethernet to perform frequency synchronization.