公开(公告)号：US10938531B2

公开(公告)日：2021-03-02

申请号：US16432525

申请日：2019-06-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ren ,  Yong Liu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04W72/04

Abstract: A data transmission method includes: selecting, by a network device, at least one target time domain resource from a plurality of candidate time domain resources, where the at least one target time domain resource is used to carry a demodulation reference signal (DMRS); and sending, by the network device, first indication information to a terminal device, where the first indication information is used to indicate the at least one target time domain resource.

公开(公告)号：US10826664B2

公开(公告)日：2020-11-03

申请号：US16242787

申请日：2019-01-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yong Liu ,  Lu Wu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04B7/06

Abstract: Embodiments of present invention disclose a reference signal sending method. The method includes: determining a time-frequency resource occupied by a reference signal of at least one antenna port in a transmission unit, the transmission unit includes a first part and a second part, any symbol in the first part is different from any symbol in the second part, the time-frequency resource is on a single symbol or a plurality of consecutive symbols within the first part, reference signals of each antenna port occupy a same symbol, and the single symbol or each of the plurality of consecutive symbols carries a reference signal of at least one antenna port; and sending the reference signal to user equipment on the time-frequency resource. In the embodiments of present invention, a reference signal mapping rule and an antenna port mapping solution that are applicable to an NR MIMO system are formulated.

公开(公告)号：US10756793B2

公开(公告)日：2020-08-25

申请号：US16503598

申请日：2019-07-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/04 ,  H04B7/0456 ,  H04L25/03

Abstract: Embodiments can provide a precoding matrix indicating method, a precoding matrix determining method, a receive end device, and a transmit end device. In the precoding matrix indicating method, component matrices of an ideal precoding matrix and a weight of each component matrix can be determined based on at least one basic codebook. A dimension of each component matrix is the same as a dimension of the ideal precoding matrix, and a column vector of each component matrix is selected from column vectors of one of the at least one basic codebook. A precoding matrix indicator can be sent. The precoding matrix indicator can indicate the component matrices and the weight of each component matrix. With this, an ideal precoding matrix is approximately represented in a form of a weighted sum of a plurality of component matrices so that feedback overheads caused by feeding back a precoding matrix can be reduced.

公开(公告)号：US10735080B2

公开(公告)日：2020-08-04

申请号：US16271367

申请日：2019-02-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Yong Liu ,  Xiaoyan Bi

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/0456 ,  H04W72/12

Abstract: This disclosure includes a transmission scheme indication method, and a data transmission method, apparatus, and system, pertaining to the field of communications technologies. The transmission scheme indication method includes: generating transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in a current transmission mode, and the at least two transmission schemes include a beamforming transmit diversity transmission scheme; and sending the transmission scheme indication information. This application resolves a problem of relatively low flexibility in UE data transmission, and improves flexibility in UE data transmission. This application is used for data transmission.

公开(公告)号：US10680773B2

公开(公告)日：2020-06-09

申请号：US16053185

申请日：2018-08-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongzhe Shi ,  Jin Liu ,  Dageng Chen ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04L1/16

Abstract: This application discloses a method and an apparatus for transmitting a pilot signal, so that more flexible resource configuration can be achieved, thereby improving resource usage. The method includes: determining, by a transmit end device based on prestored N pilot patterns, a target time-frequency resource for transmitting a pilot signal, where the target time-frequency resource corresponds to a total quantity of layers of a to-be-transmitted data stream, the N pilot patterns are different from each other, and N is a natural number greater than or equal to 1; and sending, by the transmit end device, indication information to a receive end device, where the indication information is used to instruct the receive end device to transmit the pilot signal to the transmit end device based on the target time-frequency resource.

公开(公告)号：US20190229871A1

公开(公告)日：2019-07-25

申请号：US16370657

申请日：2019-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongzhe Shi ,  Yong Liu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/12

Abstract: The present disclosure discloses a demodulation reference signal (DMRS) port configuration information obtaining method, a DMRS port configuration information delivery method, and an apparatus, and relates to the field of communications technologies, to reduce signaling overheads. The DMRS port configuration information obtaining method may include: receiving, by user equipment (UE), indication information sent by a base station, where the indication information includes overview information of DMRS ports of all UEs scheduled by the base station; and obtaining, by the UE, DMRS port configuration information of all the UEs according to a preset rule and the indication information

公开(公告)号：US10340998B2

公开(公告)日：2019-07-02

申请号：US15274170

申请日：2016-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoyan Bi ,  Dageng Chen ,  Jian Li

IPC: H04B7/06 ,  H04L5/14 ,  H04W72/04

Abstract: Embodiments of the present invention provide a channel state information obtaining method and a device, where the method includes: determining, by a base station according to radio resource usage, a special timeslot in a frequency range used for downlink data transmission; sending special-timeslot configuration information to user equipment, where the special-timeslot configuration information is used to configure the user equipment to send the uplink physical signal over a downlink frequency band in the special timeslot; and performing channel estimation according to the uplink physical signal after receiving the uplink physical signal sent by the user equipment, to obtain channel state information. Compared with a technical solution in the prior art in which user equipment obtains channel state information and then feeds back the channel state information to a base station, system overheads caused in obtaining, by the base station, the channel state information are reduced.

公开(公告)号：US09893782B2

公开(公告)日：2018-02-13

申请号：US15444609

申请日：2017-02-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Huang ,  Dageng Chen ,  Xiaoyan Bi

IPC: H04B7/06 ,  H04B7/0413 ,  H04L27/26

CPC classification number: H04B7/06 ,  H04B7/04 ,  H04B7/0413 ,  H04B7/0613 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/06 ,  H04L5/0023 ,  H04L27/2626

Abstract: A data processing apparatus and a data processing method are provided. The method includes inputting q data streams, where each data stream includes Msymb complex-valued modulation symbols of one code word, and q and Msymb are integers greater than or equal to 1. The method also includes determining an l×l matrix used by the Msymb complex-valued modulation symbols included in each data stream, where the l×l matrix is one of an l×l identity matrix and a circulant matrix of the l×l identity matrix, and l is a quantity of transport layers. Additionally, the method includes performing, by using the determined l×l matrix, layer permutation mapping on the Msymb complex-valued modulation symbols included in each data stream.

公开(公告)号：US20170034848A1

公开(公告)日：2017-02-02

申请号：US15295653

申请日：2016-10-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoyan Bi ,  Dageng Chen ,  Hejia Luo

IPC: H04W72/12 ,  H04W40/02 ,  H04W24/10

CPC classification number: H04W72/1289 ,  H04B7/0417 ,  H04B7/0486 ,  H04B7/0632 ,  H04B7/0697 ,  H04W24/10 ,  H04W40/02 ,  H04W72/02

Abstract: Embodiments provide a spatial flow determining method, a base station, and user equipment. The method includes sending, by a base station, a feedback mode indication to user equipment, where the feedback mode indication is used to instruct the user equipment to feed back, based on a packet granularity, channel state report (CSR) information, and each packet granularity includes at least one spatial flow. The method also includes receiving, by the base station, CSR information of each packet granularity that is sent by the user equipment; and determining, by the base station according to the CSR information of each packet granularity, a spatial flow used to transmit data to the user equipment.

Abstract translation: 实施例提供了空间流确定方法，基站和用户设备。 该方法包括：由基站向用户设备发送反馈模式指示，其中反馈模式指示用于指示用户设备反馈，基于分组粒度，信道状态报告（CSR）信息和每个 分组粒度包括至少一个空间流。 该方法还包括由基站接收由用户设备发送的每个分组粒度的CSR信息; 以及由基站根据每个分组粒度的CSR信息确定用于向用户设备发送数据的空间流。

公开(公告)号：US20170012690A1

公开(公告)日：2017-01-12

申请号：US15274170

申请日：2016-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaoyan Bi ,  Dageng Chen ,  Jian Li

IPC: H04B7/06 ,  H04L5/14 ,  H04W72/04

CPC classification number: H04B7/0626 ,  H04L5/14 ,  H04W72/0446 ,  H04W72/0453

Abstract: Embodiments of the present invention provide a channel state information obtaining method and a device, where the method includes: determining, by a base station according to radio resource usage, a special timeslot in a frequency range used for downlink data transmission; sending special-timeslot configuration information to user equipment, where the special-timeslot configuration information is used to configure the user equipment to send the uplink physical signal over a downlink frequency band in the special timeslot; and performing channel estimation according to the uplink physical signal after receiving the uplink physical signal sent by the user equipment, to obtain channel state information. Compared with a technical solution in the prior art in which user equipment obtains channel state information and then feeds back the channel state information to a base station, system overheads caused in obtaining, by the base station, the channel state information are reduced.

Abstract translation: 本发明的实施例提供了一种信道状态信息获取方法和装置，其中所述方法包括：基站根据无线电资源使用情况确定用于下行链路数据传输的频率范围内的特殊时隙; 向用户设备发送特殊时隙配置信息，其中特殊时隙配置信息用于配置用户设备通过特殊时隙的下行链路频带发送上行物理信号; 并在接收到用户设备发送的上行物理信号之后，根据上行物理信号进行信道估计，获得信道状态信息。 与现有技术中的技术方案相比，用户设备获得信道状态信息，然后将信道状态信息反馈给基站，由基站获得信道状态信息所引起的系统开销减少。