公开(公告)号：US20210251001A1

公开(公告)日：2021-08-12

申请号：US17240603

申请日：2021-04-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ji WU ,  Jianqin LIU ,  Jun ZHU

IPC: H04W74/08 ,  H04L5/00 ,  H04W16/14

Abstract: This application provides a method for radio link monitoring on an unlicensed spectrum and a communications apparatus. The method includes: A terminal device determines one or more channel occupancy times COTs. The terminal device detects one or more downlink reference signals within the one or more COTs. The terminal device determines, based on the downlink reference signal detected within the one or more COTs, whether a channel needs to be reconnected. According to the method for radio link monitoring on an unlicensed spectrum that is provided in this application, accuracy of radio link monitoring performed on an unlicensed spectrum can be ensured, precision of a result of the radio link monitoring can be improved, and a more accurate result of the radio link monitoring can be obtained, thereby improving communication efficiency and communication quality.

公开(公告)号：US20200336340A1

公开(公告)日：2020-10-22

申请号：US16922771

申请日：2020-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yi QIN ,  Shengyue DOU ,  Jianqin LIU ,  Yongzhao CAO

IPC: H04L25/02 ,  H04W72/04 ,  H04L5/00

Abstract: This application relates to the field of wireless communications technologies, and in particular, to a sounding reference information (SRS) transmission method, to resolve a problem of when to transmit an SRS. In the method, user equipment (UE) receives SRS resource configuration information sent by a base station. The UE receives downlink control information (DCI) sent by the base station. The UE sends an SRS in a determined slot and symbol, where the determined symbol is determined by the UE based on the SRS resource configuration information.

公开(公告)号：US20200266869A1

公开(公告)日：2020-08-20

申请号：US16867819

申请日：2020-05-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi ZHANG ,  Jianqin LIU

IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00

Abstract: This application discloses a data transmission solution. A terminal device generates channel state information and data for transmission in a data channel. The transmit power of the data channel is determined based on the number of bits used to transmit the data and the number of bits used to transmit the channel state information. The solution of this application reduces bit error probability and improves data decoding accuracy.

公开(公告)号：US20200177338A1

公开(公告)日：2020-06-04

申请号：US16788007

申请日：2020-02-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruiqi ZHANG ,  Jianqin LIU

IPC: H04L5/00

Abstract: This application provides a data transmission method, a network device, and a terminal device. The method includes: generating, by the network device, first information, where a value of a bit included in the first information is used to indicate a demodulation reference symbol (DMRS) port combination in a second set, each DMRS port combination in the second set belongs to a first set, the first set includes a plurality of DMRS port combinations, the DMRS port combination includes at least one DMRS port, and a quantity of DMRS port combinations included in the second set is less than a quantity of DMRS port combinations included in the first set; and sending, by the network device, the first information to the terminal device. According to embodiments of this application, signaling overheads can be reduced.

公开(公告)号：US20200092894A1

公开(公告)日：2020-03-19

申请号：US16688670

申请日：2019-11-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Di ZHANG ,  Jianqin LIU

IPC: H04W72/08 ,  H04W72/10 ,  H04L1/00 ,  H04L5/10 ,  H04L5/00 ,  H04W72/04

Abstract: A channel quality information transmission method and system are described. A terminal device determines a reporting priority of channel quality information according to a reporting priority rule when reporting of first channel quality information conflicts with reporting of second channel quality information. The device further determines to-be-reported content or to-be-discarded content based on the reporting priority of the channel quality information. The terminal device reports the to-be-reported content to a network device.

公开(公告)号：US20200021343A1

公开(公告)日：2020-01-16

申请号：US16579621

申请日：2019-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin LIU

IPC: H04B7/0456

Abstract: Embodiments provide a signaling sending method, an apparatus, and a system, to improve transmission efficiency and save air interface resources. According to a first aspect, one embodiment provides a signaling sending method. A base station determines a first precoding matrix indication (PMI1) and a second precoding matrix indication (PMI2), where the PMI1 and the PMI2 are used to indicate a precoding matrix. The base station sends first signaling to user equipment, where the first signaling includes the PMI1. The base station sends second signaling to the user equipment, where the second signaling includes the PMI2.

公开(公告)号：US20190327060A1

公开(公告)日：2019-10-24

申请号：US16502956

申请日：2019-07-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin LIU

IPC: H04L5/00 ,  H04W72/04 ,  H04W80/08 ,  H04L1/00 ,  H04W24/10

Abstract: The present disclosure relates to signal transmission methods, network devices, and terminal devices. One example method includes sending, by a network device, N first reference signals to a terminal device, where N is a positive integer greater than or equal to 1, sending, by the network device, physical layer control signaling to the terminal device, where the physical layer control signaling is used to trigger the terminal device to send a channel quality measurement result of the N first reference signals to the network device, and is used to instruct the terminal device to send M second reference signals to the network device, and M is a positive integer greater than or equal to 1, receiving, by the network device, the channel quality measurement result from the terminal device, and receiving, by the network device, the M second reference signals from the terminal device.

公开(公告)号：US20190229857A1

公开(公告)日：2019-07-25

申请号：US16369067

申请日：2019-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi ZHANG ,  Jianqin LIU

IPC: H04L1/18 ,  H04W76/27 ,  H04L1/00 ,  H04L27/26 ,  H04W72/12 ,  H04L27/00

Abstract: The present disclosure relates to reference symbol indication methods, devices, and systems. One example method includes receiving, by a user equipment, a target parameter including a target reference symbol indication sent by a base station, determining a target transmission mode and target reference symbol information based on the target parameter and a preset reference symbol mapping relationship, generating a target reference symbol based on the target reference symbol information, and demodulating data based on the target reference symbol and the target transmission mode, where the preset reference symbol mapping relationship includes a mapping relationship among a reference symbol indication, reference symbol information, and a transmission mode.

公开(公告)号：US20190053212A1

公开(公告)日：2019-02-14

申请号：US16134390

申请日：2018-09-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqin LIU ,  Kunpeng LIU

IPC: H04W72/04 ,  H04L5/00

Abstract: This application discloses example information indication methods and related devices. In one example method, a terminal device receives first information used to instruct the terminal device to receive a first channel in a first time unit, and second information used to instruct the terminal device to receive a second channel in a second time unit. The terminal device receives the first channel based on the first information. When the first time unit is equal to the second time unit, the terminal device receives the second channel based on the first information, where the second information is a first indicator value. When the first time unit is not equal to the second time unit, the terminal device receives the second channel based on the second information where the second information is a second indicator value.

公开(公告)号：US20190036580A1

公开(公告)日：2019-01-31

申请号：US16148296

申请日：2018-10-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ruiqi ZHANG ,  Jianqin LIU

IPC: H04B7/0456

CPC classification number: H04B7/0478 ,  H04B7/0639 ,  H04B7/0658 ,  H04L1/06 ,  H04W84/042

Abstract: A method and apparatus for precoding matrix indicator feedback reduce a quantity of bits in the feedback. In the method, a terminal device receive a reference signal from a base station, determines a precoding matrix W in a precoding matrix set corresponding to a rank indication. W satisfies W=W1×W2×W3, W1, W2 and W3 and matrices and respectively corresponding to a first, second and third precoding matrix indicator. None of W1, W2, and W3 is an identity matrix, and the 2M columns in W1 comprise every column in W1×W2. The terminal device transmits the rank indication, the first precoding matrix indicator, the second precoding matrix indicator, and the third precoding matrix indicator to the base station. Therefore, a quantity of to-be-selected vectors is reduced by using a first-stage feedback and a second-stage feedback, thereby reducing calculation complexity of third-stage feedback, and reducing a quantity of bits in the third-stage feedback.