公开(公告)号：US11025392B2

公开(公告)日：2021-06-01

申请号：US16457613

申请日：2019-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shibin Ge ,  Yong Liu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04B17/336 ,  H04W72/04

Abstract: A reference signal sending/receiving method, a terminal device, and a network device are provided. The terminal device determines transmit power of a reference signal of the terminal device, where the transmit power is related to a quantity of unavailable time-frequency resources in a transmission unit in which the reference signal is located; and transmits the reference signal based on the transmit power. After receiving the reference signal from the terminal device, the network device parses the reference signal based on the transmit power. The terminal device relates the transmit power of the reference signal of the terminal device to the quantity of unavailable time-frequency resources in the transmission unit in which the reference signal is located, thereby improving the transmit power of the reference signal of the terminal device in uplink MU-MIMO, and improving communication performance of the terminal device with a low signal-to-noise ratio.

公开(公告)号：US10911122B2

公开(公告)日：2021-02-02

申请号：US16710410

申请日：2019-12-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Huangping Jin ,  Wei Han ,  Xiaoyan Bi

IPC: H04W72/04 ,  H04B7/06

Abstract: This application provides a reference signal sending method, a reference signal receiving method, a network device, and a terminal device, to perform CSI (Channel State Information) measurement by using more precoding vectors (or precoding matrices), to measure more equivalent channels, thereby improving flexibility and a spatial degree of freedom of network device scheduling. The method includes: performing, by the network device, precoder cycling on a first reference signal by using at least two precoding vectors, to obtain a precoded first reference signal, where the precoded first reference signal is borne in a plurality of physical resource groups, and signals borne in any two adjacent physical resource groups correspond to different precoding vectors; and sending, by the network device, the precoded first reference signal to the terminal device by using the plurality of physical resource groups, where the first reference signal is used by the terminal device to perform CSI measurement.

公开(公告)号：US10750508B2

公开(公告)日：2020-08-18

申请号：US16186282

申请日：2018-11-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Han ,  Xiaoyan Bi ,  Dageng Chen

IPC: H04W72/04 ,  H04B7/06 ,  H04L1/02 ,  H04B7/0456 ,  H04L25/02 ,  H04L25/03 ,  H04B7/0413 ,  H04L5/00 ,  H04W88/08

Abstract: Embodiments of the present application provide a channel state information feedback method, device, and system. The method includes: generating an uplink signal, where the uplink signal carries information for identifying multiple codewords and weights of the codewords; and transmitting the uplink signal to a base station (BS), so that the base station estimates a downlink channel based on the multiple codewords and weight information of the codewords in the uplink signal. In the embodiments of the present application, a user equipment UE side reports multiple codewords and weight information of the multiple codewords. This can resolve a problem in the prior art that precision of downlink channel estimation performed by a BS side is relatively low because only a single codeword is reported, and can effectively enhance precision indicated by channel information, without increasing complexity of a codebook design and implementation.

公开(公告)号：US10511411B2

公开(公告)日：2019-12-17

申请号：US16237465

申请日：2018-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Yong Liu ,  Shibin Ge ,  Huangping Jin ,  Xiaoyan Bi ,  Xiang Ren

IPC: H04L1/06 ,  H04L5/00 ,  H04B7/06

Abstract: This application provides a method for configuring a channel state information reporting band, a reporting method, and a corresponding apparatus. The method includes: determining a channel state information subband size based on a bandwidth part BWP; and determining, a quantity of channel state information subbands included in a channel state information reporting band, based on a carrier bandwidth CC bandwidth or the bandwidth part BWP bandwidth or a channel state information reference signal CSI-RS bandwidth, and the channel state information subband size. The method further includes: determining an actual quantity of resource blocks included in a starting subband and an actual quantity of resource blocks included in an ending subband in the channel state information subband. Implementation of this application makes configuration of a quantity and size of subbands in a CSI reporting band more flexible, and reduces complexity of terminal addressing.

公开(公告)号：US10374673B2

公开(公告)日：2019-08-06

申请号：US16228357

申请日：2018-12-20

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Huangping Jin ,  Wei Han ,  Peng Shang ,  Xiaoyan Bi

IPC: H04B7/0417 ,  H04B7/0456

Abstract: The present invention belongs to the field of communications technologies, and discloses a channel state information CSI feedback method and an apparatus. The method includes: determining a codebook of at each transport layer CSI of user equipment UE, where the codebook of the CSI at each transport layer of the UE is: W=W1×W2 an element Xi in W2 is a weighting coefficient corresponding to each codeword in W1, and i is an integer greater than or equal to 1 and less than or equal to K; determining a quantity Ni of bits occupied by a quantized value of an ith element in W2, where quantized values of at least two elements in W2 occupy different quantities of bits; and feeding back the quantized value of the ith element to a network device based on Ni.

公开(公告)号：US20190222354A1

公开(公告)日：2019-07-18

申请号：US16237465

申请日：2018-12-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Wei Han ,  Yong Liu ,  Shibin Ge ,  Huangping Jin ,  Xiaoyan Bi ,  Xiang Ren

IPC: H04L1/06 ,  H04L5/00 ,  H04B7/06

Abstract: This application provides a method for configuring a channel state information reporting band, a reporting method, and a corresponding apparatus. The method includes: determining a channel state information subband size based on a bandwidth part BWP; and determining, a quantity of channel state information subbands included in a channel state information reporting band, based on a carrier bandwidth CC bandwidth or the bandwidth part BWP bandwidth or a channel state information reference signal CSI-RS bandwidth, and the channel state information subband size. The method further includes: determining an actual quantity of resource blocks included in a starting subband and an actual quantity of resource blocks included in an ending subband in the channel state information subband. Implementation of this application makes configuration of a quantity and size of subbands in a CSI reporting band more flexible, and reduces complexity of terminal addressing.

公开(公告)号：US20190123796A1

公开(公告)日：2019-04-25

申请号：US16228357

申请日：2018-12-20

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Huangping Jin ,  Wei Han ,  Peng Shang ,  Xiaoyan Bi

IPC: H04B7/0456 ,  H04B7/0417

CPC classification number: H04B7/0478 ,  H04B7/0417

Abstract: The present invention belongs to the field of communications technologies, and discloses a channel state information CSI feedback method and an apparatus. The method includes: determining a codebook of at each transport layer CSI of user equipment UE, where the codebook of the CSI at each transport layer of the UE is: W=W1×W2 an element Xi in W2 is a weighting coefficient corresponding to each codeword in W1, and i is an integer greater than or equal to 1 and less than or equal to K; determining a quantity Ni of bits occupied by a quantized value of an ith element in W2, where quantized values of at least two elements in W2 occupy different quantities of bits; and feeding back the quantized value of the ith element to a network device based on Ni.

公开(公告)号：US20190082440A1

公开(公告)日：2019-03-14

申请号：US16186282

申请日：2018-11-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Han ,  Xiaoyan Bi ,  Dageng Chen

IPC: H04W72/04 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0413

Abstract: Embodiments of the present application provide a channel state information feedback method, device, and system. The method includes: generating an uplink signal, where the uplink signal carries information for identifying multiple codewords and weights of the codewords; and transmitting the uplink signal to a base station (BS), so that the base station estimates a downlink channel based on the multiple codewords and weight information of the codewords in the uplink signal. In the embodiments of the present application, a user equipment UE side reports multiple codewords and weight information of the multiple codewords. This can resolve a problem in the prior art that precision of downlink channel estimation performed by a BS side is relatively low because only a single codeword is reported, and can effectively enhance precision indicated by channel information, without increasing complexity of a codebook design and implementation.

公开(公告)号：US10212666B2

公开(公告)日：2019-02-19

申请号：US15462516

申请日：2017-03-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoyan Bi ,  Dageng Chen ,  Rongdao Yu

IPC: H04W52/02 ,  H04W8/22

Abstract: Disclosed is a UE and a method for controlling the UE. The UE includes: an input/output (I/O) module, configured to display an intelligent-shutdown-mode setting interface, where the intelligent-shutdown-mode setting interface includes a setting option for shutting down/starting a radio frequency chain of the UE, obtain setting information of the user on the intelligent-shutdown-mode setting interface, and send the setting information to an intelligent shutdown module; the intelligent shutdown module, configured to receive the setting information sent by the I/O module, modify wireless transmission capability report information of the UE according to the setting information, send modified wireless transmission capability report information to a communications module, and shut down/start the radio frequency chain of the UE; and the communications module, configured to receive the modified wireless transmission capability report information that is sent by the intelligent shutdown module, and send the modified wireless transmission capability report information to a base station.

公开(公告)号：US12224833B2

公开(公告)日：2025-02-11

申请号：US18331518

申请日：2023-06-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jie Wang ,  Li Fan ,  Shibin Ge ,  Hui Wang ,  Zhimeng Zhong ,  Xiaoyan Bi

IPC: H04B7/06 ,  H04B7/0417

Abstract: This application provides a channel state information (CSI) feedback method including: a terminal device selects B complex coefficients from K complex coefficients according to a preset priority rule, and provides feedback, where K is a quantity of complex coefficients that the terminal device is allowed to feed back, and the preset priority rule is related to at least one of the following: an index value of each complex coefficient in the K complex coefficients, an index value of a reference signal port corresponding to each complex coefficient in the K complex coefficients in S reference signal ports, or an index value of each complex coefficient in the K complex coefficients in a plurality of complex coefficients that are allowed to be selected for a corresponding reference signal port, where S is a quantity of reference signal ports that the terminal device is allowed to select.