公开(公告)号：US20150327242A1

公开(公告)日：2015-11-12

申请号：US14802455

申请日：2015-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye Wu ,  Wei Zhang

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

CPC classification number: H04W72/048 ,  H04L5/0023 ,  H04W72/121 ,  H04W72/1231

Abstract: Provided are a method and apparatus for scheduling user equipments in a communication system. The method comprises: obtaining geographic position information of UEs in connected state, and determining, in each TTI, the UEs which need to feed back the geographic position information, by a serving base station; obtaining, in the (k+1)-th TTI, the channel information of a first part of UEs among the UEs in the connected state, wherein it is determined in the k-th TTI, based on the channel information of a second part of UEs obtained in the k-th TTI and the geographic position information of the second part of UEs, that the channel information of the first part of UEs is to be obtained in the (k+1)-th TTI; and selecting a UE to be scheduled from the first part of UEs based on the channel information of the first part of UEs.

Abstract translation: 提供一种用于在通信系统中调度用户设备的方法和装置。 该方法包括：获取处于连接状态的UE的地理位置信息，以及在每个TTI中，确定由服务基站反馈地理位置信息的UE; 在第（k + 1）TTI中，在连接状态的UE中，基于第二部分的信道信息确定第k个TTI中的UE的第一部分的信道信息 在第k个TTI中获得的UE和UE的第二部分的地理位置信息，在第（k + 1）个TTI中获得UE的第一部分的信道信息; 以及基于UE的第一部分的信道信息来选择要从UE的第一部分调度的UE。

公开(公告)号：US12016048B2

公开(公告)日：2024-06-18

申请号：US17488838

申请日：2021-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Xiaoyan Bi

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/542 ,  H04W76/28

CPC classification number: H04W72/542 ,  H04L5/0051 ,  H04W72/0446 ,  H04W72/0453 ,  H04W76/28

Abstract: This application provides a CSI measurement method and apparatus. In the method, a terminal may send, to a network device, a first RS that occupies a plurality of frequency domain resource segments in one time domain unit, where the plurality of frequency domain resource segments are discontinuously distributed on a frequency band of the terminal, and the network device receives the first RS on a corresponding frequency domain resource segment, and measures CSI based on the first RS. Currently, to avoid channel aging, a method is to shorten an SRS periodicity. Because frequency domain resources occupied by the SRS are continuously distributed on an entire frequency band, this method leads to a waste of time-frequency resources. However, the first RS in this application is discontinuously distributed on a frequency band of the terminal, and a relatively small quantity of time-frequency resources are occupied.

公开(公告)号：US11750326B2

公开(公告)日：2023-09-05

申请号：US17147837

申请日：2021-01-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Xiaoyan Bi

IPC: H04L1/06 ,  H04L5/00 ,  H04L27/26 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/23

CPC classification number: H04L1/0668 ,  H04L5/0048 ,  H04L27/2613 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/23

Abstract: A terminal device receives a DMRS and data from a network device. The DMRS and the data undergo Alamouti coding in space domain and frequency domain, or the DMRS and the data undergo Alamouti coding in space domain and time domain, and a DMRS obtained through the Alamouti coding is mapped to a first DMRS port and a second DMRS port. A modulation symbol of the first DMRS port is related to a modulation symbol of the second DMRS port. The terminal device demodulates the data based on the DMRS. Therefore, the DMRS corresponds to a transmission scheme of the data, to help the terminal device demodulate the data. This can reduce interference estimation complexity of the terminal device.

公开(公告)号：US11683076B2

公开(公告)日：2023-06-20

申请号：US16703607

申请日：2019-12-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04B7/0417 ,  H04B7/0456

CPC classification number: H04B7/0417 ,  H04B7/0456

Abstract: This application provides a data transmission method, so that data transmission reliability can be improved. The method includes: receiving, by the terminal device, a plurality of reference signals used for channel measurement; and sending, by the terminal device, a plurality of pieces of first indication information based on the at least one reference signal and a transmission scheme on which CSI feedback is based, where the plurality of pieces of first indication information are used to indicate x target precoding matrices, at least one of the plurality of pieces of first indication information is used to indicate one target precoding matrix, and the x target precoding matrices are determined based on the plurality of precoding matrices, where x is a quantity of target precoding matrices that need to be fed back, and x is an integer greater than 1.

公开(公告)号：US11652523B2

公开(公告)日：2023-05-16

申请号：US17110764

申请日：2020-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Hongzhe Shi ,  Huang Huang ,  Huangping Jin

IPC: H04B7/06 ,  H04W72/51 ,  H04B17/318 ,  H04L5/00

CPC classification number: H04B7/0617 ,  H04B17/318 ,  H04L5/0048 ,  H04W72/51

Abstract: The application provides a beam training method and a communications apparatus. The method includes: generating, by a terminal device, capability indication information, where the capability indication information is used to indicate that the terminal device can support simultaneous beam training in a maximum of N frequency bands, and N is an integer greater than or equal to 1; and sending, by the terminal device, the capability indication information. In this way, the network device may select a plurality of frequency bands at a time based on a capability of the terminal device to simultaneously perform beam training. Therefore, in an embodiments of this application, when the quantity N, of frequency bands for simultaneous training, supported by the terminal device is greater than 1, beam training may be simultaneously performed between the network device and the terminal device in a plurality of frequency bands.

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：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：US10284411B2

公开(公告)日：2019-05-07

申请号：US15264330

申请日：2016-09-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haicun Hang ,  Ye Wu

IPC: H04L27/26 ,  H04L25/02 ,  H04J11/00 ,  H04L12/801 ,  H04W16/22 ,  H04L25/03 ,  H04W88/02 ,  H04W88/08

Abstract: The present invention discloses a signal processing method and apparatus, and pertains to the field of communications technologies. The apparatus includes: a processor and a memory. The method includes: setting each sampling point signal on an orthogonal frequency division multiplexing OFDM symbol, and obtaining an input signal; calculating a constraint matrix according to a frequency selective fading channel characteristic; and calculating an output signal according to the sampling point signal, the input signal, and the constraint matrix. The present invention resolves a problem that frequency selective fading has an impact on transmission of the OFDM symbol, and a constraint matrix obtained according to a flat fading channel characteristic is not applicable to the OFDM symbol, thereby achieving an effect of reducing the impact of the frequency selective fading on the transmission of the OFDM symbol.

公开(公告)号：US10264471B2

公开(公告)日：2019-04-16

申请号：US15296918

申请日：2016-10-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deli Qiao ,  Ye Wu ,  Lei Wang

IPC: H04W24/08 ,  H04W16/28 ,  H04B17/336 ,  H04B7/0413 ,  H04B7/06 ,  H04L5/14 ,  H04W72/04 ,  H04B7/04

Abstract: An adaptive multi-antenna data transmission method, apparatus, and system are provided. The adaptive multi-antenna data transmission method includes: acquiring, at a current time interval, a beam adjustment parameter of user equipment UE; adjusting a beam width of the UE according to the beam adjustment parameter of the UE; and performing precoding processing on to-be-transmitted data of the UE according to an adjusted beam width of the UE and direction information of the UE, so as to perform data transmission. A beam width of UE is adjusted, so that a direction of a beam during data transmission can better match a direction of the UE. Therefore, a status or quality of a link for the UE is improved and a performance loss is reduced.

公开(公告)号：US10236949B2

公开(公告)日：2019-03-19

申请号：US15891658

申请日：2018-02-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye Wu ,  Deli Qiao ,  Lei Wang

IPC: H04B7/04 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0452

Abstract: Embodiments of the present invention disclose a base station, including: a first channel state information acquiring module, configured to acquire channel state information of dimension-reduced channel subspace by means of level-one channel state information measurement; a set determining module, configured to: schedule the user equipment, and determine a set of user equipment involved in multiple-input multiple-output; a second channel state information acquiring module, configured to: perform level-two channel state information measurement on user equipment in the set of user equipment to acquire state information of a dimension-reduced real-time channel; and a data sending module, configured to: process downlink data and a user-specific demodulation reference signal by means of two-level precoding, and send processed downlink data and a processed user-specific demodulation reference signal to the user equipment in the set of user equipment.