公开(公告)号：US20190090213A1

公开(公告)日：2019-03-21

申请号：US16183206

申请日：2018-11-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chao Li

IPC: H04W56/00 ,  H04L12/733 ,  H04L12/26 ,  H04W76/14

CPC classification number: H04W56/0015 ,  H04L43/16 ,  H04L45/122 ,  H04W56/0025 ,  H04W76/14

Abstract: A device synchronization method in D2D communication implements synchronization between devices. One such method includes receiving first device-to-device (D2D) synchronization information sent by a first device in a D2D communication, including a secondary D2D synchronization signal (SD2DSS). The method further includes determining a synchronization source identifier and a forwarding hop count according to preset correspondences between the SD2DSS and the synchronization source identifier and between the SD2DSS and the forwarding hop count. A synchronization source which corresponds to the synchronization source identifier is synchronized with. The forwarding hop count in the first D2D synchronization information is updated in response to determining that the forwarding hop count in the first D2D synchronization information is less than a set threshold, to obtain second D2D synchronization information, and the second D2D synchronization information is sent.

公开(公告)号：US10153813B2

公开(公告)日：2018-12-11

申请号：US15352024

申请日：2016-11-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chao Li

IPC: H04B7/04 ,  H04B7/0413 ,  H04W24/10 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04

Abstract: Embodiments provide an information processing method, a base station, and user equipment. The method includes determining multiple subband groups, where the multiple subband groups are obtained by dividing multiple physical resource blocks corresponding to resource elements (REs) originally occupied by a CSI-RS, and each subband group in the multiple subband groups includes at least one subband. The method also includes determining a reference signal corresponding to each subband group in the multiple subband groups, where the reference signal corresponding to each subband group is generated by performing a precoding operation on the CSI-RS originally carried in first bearer REs in each subband in each subband group. Additionally, the method includes transmitting, by using the first bearer REs in each subband group in the multiple subband groups, the reference signal corresponding to each subband group.

公开(公告)号：US20170230160A1

公开(公告)日：2017-08-10

申请号：US15581340

申请日：2017-04-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Li ,  Yuchun Wu ,  Chao Li

IPC: H04L5/00 ,  H04W24/02 ,  H04W28/04 ,  H04W48/12

CPC classification number: H04L5/0048 ,  H04W24/02 ,  H04W28/04 ,  H04W48/12 ,  H04W52/0206 ,  H04W52/0216 ,  H04W52/0229 ,  H04W52/0238 ,  Y02D70/00 ,  Y02D70/1262

Abstract: Embodiments of the present invention provide a radio resource management method, apparatus, and system and relate to the field of wireless communications technologies. The apparatus includes a determining module, configured to determine that a state of a secondary cell for user equipment (UE) needs to be changed to an uplink-enabled and downlink-disabled state. The apparatus also includes a change module, configured to change the state of the secondary cell, so that the state of the secondary cell is the uplink-enabled and downlink-disabled state, where when the state of the secondary cell is the uplink-enabled and downlink-disabled state, an uplink signal can be received in the secondary cell by a base station to which the secondary cell belongs, a downlink signal can be transmitted by the base station to which the secondary cell belongs only in a subframe for transmitting a discovery reference signal (DRS) in the secondary cell.