公开(公告)号：US10785731B2

公开(公告)日：2020-09-22

申请号：US16512418

申请日：2019-07-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qian Wu

IPC: H04W52/24 ,  H04W72/04 ,  H04W52/30 ,  H04W40/08 ,  H04W52/36 ,  H04W52/38 ,  H04W64/00 ,  H04W52/28

Abstract: Embodiments provide a transmit power determining method. Under this method, a first wireless communications device determines its distance to a second wireless communications device a working frequency of the second wireless communications device, and a first condition is met. If the first wireless communications device determines that its maximum transmit power is greater than a preset threshold, it adjusts the maximum transmit power, so that the adjusted maximum transmit power is equal to or less than the preset threshold. The preset threshold is used to suppress interference caused by the first wireless communications device to receiving performance of the second wireless communications device under the first condition. The first condition includes the distance to the second wireless communications device being less than or equal to a first threshold, and a working frequency difference between the first and second wireless communications devices being less than or equal to a second threshold.

公开(公告)号：US09736799B2

公开(公告)日：2017-08-15

申请号：US14623389

申请日：2015-02-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qian Wu ,  Lixia Xue ,  Sha Ma

IPC: H04W56/00 ,  H04W92/20

CPC classification number: H04W56/0005 ,  H04W56/0015 ,  H04W92/20

Abstract: Embodiments of the present application provide a synchronization method and a base station. In the embodiments of the present application, a first base station receives, on at least one part of channels in a receiving band supported by the first base station, at least one first downlink synchronization signal sent by at least one second base station, and selects a first downlink synchronization signal from the at least one first downlink synchronization signal, to enable the first base station to execute time synchronization according to the selected first downlink synchronization signal, which can avoid a problem in the prior art of low reliability of time synchronization caused by low availability of a GPS signal, and relieve interference suffered by a base station from another base station caused by a problem of asynchronous receiving and sending time or inaccurate time synchronization, thereby improving signal quality of an air interface.