公开(公告)号：US20210410006A1

公开(公告)日：2021-12-30

申请号：US17468269

申请日：2021-09-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haicun Hang ,  Shibin Ge ,  Xiaohan Wang ,  Liuliu Ji ,  Xiaoyan Bi

IPC: H04W28/06 ,  H04W72/04

Abstract: This disclosure provides a method for determining a transport block size (TBS) of a transport block and a communications apparatus. The method includes: A communications apparatus determines a data block size corresponding to each of n code words, where the n code words correspond to a same transport block, and n is an integer greater than 1; and then, the communications apparatus determines a TBS of the transport block based on a data block size of one or more of the n code words.

公开(公告)号：US11101866B2

公开(公告)日：2021-08-24

申请号：US16694405

申请日：2019-11-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haicun Hang ,  Xiaoyan Bi ,  Ye Wu

IPC: H04B7/06 ,  H04B7/0456 ,  H04L1/00 ,  H04W24/10

Abstract: Embodiments of this application disclose a rank indication reporting method and apparatus, and an indication method and apparatus, and relate to the field of communications technologies. The method may include: receiving at least two pieces of indication information, where each of the at least two pieces of indication information is used to indicate a maximum value of an RI that a network device associated with the indication information allows a terminal to report, and at least two network devices associated with the at least two pieces of indication information cooperate to provide a service for the terminal; and reporting RIs based on the at least two pieces of indication information.

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.