公开(公告)号：US10939307B2

公开(公告)日：2021-03-02

申请号：US16204514

申请日：2018-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guochen Liu ,  Quanzhong Gao ,  Hui Huang ,  Chaoyi Yan

IPC: H04W24/02 ,  H04W24/00 ,  H04B17/14 ,  H04W56/00 ,  H04W88/08

Abstract: A method for calibrating a channel between radio remote unit (RRUs) includes: for each subcarrier in M subcarriers in full bandwidth, instructing, by a baseband unit (BBU), a reference RRU to transceive a calibration signal on the subcarrier by using a reference channel and a preset channel in a preset RRU, and calculating a calibration coefficient; and determining a first correspondence according to M calibration coefficients obtained by means of calculation, where the first correspondence includes a correspondence between a frequency of each subcarrier and the calibration coefficient on the subcarrier, 2≤M

公开(公告)号：US20170230991A1

公开(公告)日：2017-08-10

申请号：US15581582

申请日：2017-04-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Junjie Yan ,  Li Li ,  Chaoyi Yan

IPC: H04W72/12

CPC classification number: H04W72/1205 ,  H04W72/12 ,  H04W72/1247

Abstract: The method includes acquiring a working remote radio unit (RRU) set of a user equipment (UE), determining an RRU having the highest signal strength of the UE and screening the working RRU set based on the RRU having the highest signal strength, to generate a first paired RRU set of the UE, generating a paired UE set based on the first paired RRU set, determining whether an RRU exists in the first paired RRU set, when an RRU exists in the first paired RRU set, determining a second paired RRU set of the UE according to the first paired RRU set and the paired UE set and determining an actual user attribute of the UE according to the second paired RRU set and an initial user attribute of the UE, and scheduling a resource for the UE according to the actual user attribute of the UE.

公开(公告)号：US11936572B2

公开(公告)日：2024-03-19

申请号：US17349524

申请日：2021-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chaoyi Yan ,  Zezhou Luo

IPC: H04W4/00 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04L5/001 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/21 ,  H04W72/23

Abstract: A carrier aggregation system includes a TDD carrier and an FDD carrier, and a method for the carrier aggregation system includes: a terminal device receives downlink information by using a secondary component carrier; and the terminal device sends feedback information for the downlink information by using a primary component carrier. When the primary component carrier or the secondary component carrier is a TDD carrier, at least one first subframe that includes P consecutive sTTIs exists in the TDD carrier, and at least one sTTI that occupies two OFDM symbols exists in the P consecutive sTTIs, where P is an integer greater than 1. Embodiments of the present disclosure further provide a corresponding terminal device and network device.

公开(公告)号：US11909461B2

公开(公告)日：2024-02-20

申请号：US17389861

申请日：2021-07-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bo Wang ,  Chaoyi Yan ,  Zezhou Luo

IPC: H04B3/52 ,  H04W80/02 ,  H04W92/20 ,  H04W84/04

CPC classification number: H04B3/52 ,  H04W80/02 ,  H04W92/20 ,  H04W84/042

Abstract: A communication apparatus acting as a baseband unit (BBU) or being applicable to a BBU, and having instructions for obtaining first coordination information to be sent to a second BBU, determining, based on preset link information, a transmission link corresponding to the second BBU, the transmission link including a first remote radio unit (RRU) and a second RRU, the first RRU belonging to the BBU, the second RRU belonging to the second BBU, and the first RRU and the second RRU being connected through a wired link, sending the first coordination information to the first RRU, sending indication information to the first RRU, the indication information indicating to the first RRU to send the first coordination information to the second RRU through the wired link, the indication information having an identifier of the second RRU.

公开(公告)号：US11121781B2

公开(公告)日：2021-09-14

申请号：US16887644

申请日：2020-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fan Luo ,  Feng Li ,  Yue Liu ,  Chaoyi Yan

IPC: H04W24/00 ,  H04B17/11 ,  H04B17/21

Abstract: This application provides a calibration method: receiving, by a control apparatus of an RRU, resource configuration information, where a time-frequency resource indicated by the resource configuration information is used to send and receive a calibration signal between the RRU and n other RRUs, the n other RRUs are RRUs in a calibration path topology, a quantity of hops of a calibration path between the RRU and each of the n other RRUs is 1; controlling, based on the resource configuration information, the RRU to send and receive a calibration signal on the time-frequency resource; obtaining m groups of path information based on the calibration signal; obtaining m calibration coefficients based on the m groups of path information; and compensating M channels of the RRU by using the m calibration coefficients.

公开(公告)号：US10904892B2

公开(公告)日：2021-01-26

申请号：US16423180

申请日：2019-05-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Quanzhong Gao ,  Chaoyi Yan ,  Chen Wang

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04B7/0408

Abstract: A beamforming method and apparatus are disclosed, to expand coverage of a PDCCH in a particular direction, and improve demodulation performance of the PDCCH. Under this method, a cell-specific reference signal CRS wide beam can be combined by a base station with N CRS narrow beams to form N CRS composite beams. A first beam can be selected by the base station from the N CRS composite beams. Beamforming processing can be performed by the base station on a physical downlink control channel (PDCCH) based on a weight of the first beam to form a second beam. The first beam and the second beam can be sent.

公开(公告)号：US20210359719A1

公开(公告)日：2021-11-18

申请号：US17389861

申请日：2021-07-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bo Wang ,  Chaoyi Yan ,  Zezhou Luo

IPC: H04B3/52 ,  H04W80/02 ,  H04W92/20

Abstract: A communication apparatus acting as a baseband unit (BBU) or being applicable to a BBU, and having instructions for obtaining first coordination information to be sent to a second BBU, determining, based on preset link information, a transmission link corresponding to the second BBU, the transmission link including a first remote radio unit (RRU) and a second RRU, the first RRU belonging to the BBU, the second RRU belonging to the second BBU, and the first RRU and the second RRU being connected through a wired link, sending the first coordination information to the first RRU, sending indication information to the first RRU, the indication information indicating to the first RRU to send the first coordination information to the second RRU through the wired link, the indication information having an identifier of the second RRU.

公开(公告)号：US20190208530A1

公开(公告)日：2019-07-04

申请号：US16295383

申请日：2019-03-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Quanzhong Gao ,  Chaoyi Yan ,  Heng Xu ,  Chao Zhang

IPC: H04W72/12 ,  H04W72/04 ,  H04W16/14

CPC classification number: H04W72/1205 ,  H04L5/0005 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/12

Abstract: A wireless communication method, a base station and a terminal are disclosed. In an embodiment a method includes determining, by a base station, a first resource and a second resource from a target resource, wherein the target resource is a resource shared by at least one terminal in a first Radio Access Technology (RAT) and at least one terminal in a second RAT, the first resource being a resource used by the terminal in the first RAT, and the second resource being a resource used by the terminal in the second RAT, sending, by the base station, first indication information to the terminal in the first RAT, wherein the first indication information is used to indicate the first resource to be used by the terminal in the first RAT and sending, by the base station, second indication information to the terminal in the second RAT, wherein the second indication information is used to indicate the second resource to be used by the terminal in the second RAT.

公开(公告)号：US20210352676A1

公开(公告)日：2021-11-11

申请号：US17382314

申请日：2021-07-21

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Chaoyi Yan ,  Yuanke Luo

IPC: H04W72/08 ,  H04W72/04 ,  H04L5/14

Abstract: Embodiments of this application provide a resource allocation method, a base station, and a terminal. The method includes receiving band information sent by a terminal, where the band information is indicates band types supported by the terminal. Configuration information is sent to the terminal if it is determined that the band information indicates that the band types supported by the terminal include a first band and one or more second bands. The configuration information indicates allocation of the first band and the second band to the terminal, and that the first band is to operate in a supplemental downlink (SDL) mode, where the second band is different from the first band and a third band, and the third band is a band that causes interference to an uplink signal if the uplink signal is on the first band.

公开(公告)号：US10165586B2

公开(公告)日：2018-12-25

申请号：US15391024

申请日：2016-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Li Li ,  Quanzhong Gao ,  Chaoyi Yan ,  Hui Huang

IPC: H04W72/12 ,  H04B17/345 ,  H04L5/00 ,  H04W88/08

Abstract: Embodiments of the present invention relate to a method and device for determining RRU. The method includes: a BBU obtains interference strength information of a terminal, where the interference strength information includes a downlink mode of the terminal. The method further includes: if demodulation is performed by using a dedicated reference signal (DRS) in the downlink mode, the BBU performs resource scheduling on the terminal by using a second RRU, where the second RRU is selected by the BBU from multiple first RRUs that serve the terminal; or if demodulation is performed without using a DRS in the downlink mode, the BBU performs resource scheduling on the terminal by using a third RRU, where the third RRU is determined by the BBU according to any one of an uplink signal strength value of the terminal, a downlink quality value of the terminal, or an uplink quality value of the terminal.