公开(公告)号：US11671884B2

公开(公告)日：2023-06-06

申请号：US17245183

申请日：2021-04-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui Wang ,  Li Hu ,  Mingzeng Dai ,  Qinghai Zeng

IPC: H04W36/00 ,  H04W76/19 ,  H04L9/08 ,  H04W12/02 ,  H04W12/04

CPC classification number: H04W36/0079 ,  H04L9/0891 ,  H04W12/02 ,  H04W12/04 ,  H04W36/0038 ,  H04W76/19 ,  H04L2209/80

Abstract: The present disclosure relates to connection reestablishment methods and apparatus. In one example method, when a handover fails, a terminal reverts back to a source configuration, and obtains a selected cell. The terminal sends a connection reestablishment request to a selected radio access network device. The terminal receives a first message from the selected radio access network device, where the first message includes indication information used to indicate to derive an access network key based on a core network key. The terminal obtains a first core network key based on the indication information, and derives a first access network key based on the first core network key. The terminal communicates with the selected radio access network device by using the first access network key.

公开(公告)号：US20220338090A1

公开(公告)日：2022-10-20

申请号：US17809634

申请日：2022-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rui Wang ,  Mingzeng Dai ,  Qinghai Zheng ,  Wenjie Peng

IPC: H04W36/32 ,  H04W36/08

Abstract: This application discloses a communication method, including: a terminal obtains a current flight parameter, and determines a target conditional handover configuration from a candidate conditional handover configuration group based on the current flight parameter, where the target conditional handover configuration is used to determine a second cell that the terminal expects to access. In this process, because the candidate conditional handover configuration group generated by the access network device to which a first cell belongs corresponds to the flight-related parameter, the terminal obtains the target conditional handover configuration in the candidate conditional handover configuration group based on a matching result between the current flight parameter and the flight-related parameter. In this way, accuracy of obtaining the target conditional handover configuration is improved, and efficiency of handover to the second cell is improved.

公开(公告)号：US11463937B2

公开(公告)日：2022-10-04

申请号：US16925614

申请日：2020-07-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui Wang ,  Mingzeng Dai ,  You Li ,  Qinghai Zeng

IPC: H04W40/22 ,  H04L69/326 ,  H04W24/10

Abstract: The present disclosure relates to data transmission methods. One example method is applied to a first communications device or a chip in the first communications device. The method includes obtaining first data, and sending, to a second communications device, a first message including the first data and a type identifier, where the type identifier is used to indicate a type of the first data, and the type of the first data includes at least one of user plane data, a status report, a control plane message, and a radio resource control RRC message of a terminal.

公开(公告)号：US20220104097A1

公开(公告)日：2022-03-31

申请号：US17548251

申请日：2021-12-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Li Hu ,  Yinghao Jin ,  Rui Wang

IPC: H04W36/30 ,  H04W36/00

Abstract: When triggering a handover request, a source network device requests a measurement indication from a target access network device using the handover request, where the measurement indication indicates the terminal device to measure a channel state of a target cell. In this way, the source network device sends the measurement indication to the terminal device using an RRC reconfiguration message. Then, the terminal device measures the specified channel state of the target cell based on the measurement indication, to obtain a measurement result, and then determines, depending on whether the measurement result meets a handover condition, whether to perform cell handover.

公开(公告)号：US20220022275A1

公开(公告)日：2022-01-20

申请号：US17488150

申请日：2021-09-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Tingting Geng ,  Rui Wang ,  Hongping Zhang ,  Qinghai Zeng

IPC: H04W76/19 ,  H04W24/04

Abstract: The embodiments of this application provide a communication method and an apparatus, and relate to the field of communications technologies, to successfully report MCG link failure information. The method includes: When a terminal device sends a first data unit to a first access network device via an MCG split bearer, the terminal device determines that an MCG link failure occurs. In addition, the terminal device sends a second data unit to a second access network device via an SCG split bearer, so that the second access network device sends the second data unit to the first access network device, where the second data unit includes information used to indicate the MCG link failure.

公开(公告)号：US11082899B2

公开(公告)日：2021-08-03

申请号：US16793752

申请日：2020-02-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rui Wang ,  Mingzeng Dai

IPC: H04W36/00 ,  H04W36/04 ,  H04W48/18 ,  H04W36/30

Abstract: This application provides a cell reselection method and apparatus. The method includes: measuring, by a terminal, reference signals of X neighboring cells that work on a target frequency, to obtain X signal measurement values; and if the terminal determines that signal measurement values of N cells in the X neighboring cells meet a cell reselection condition, using, by the terminal as a reselected cell when determining that there is at least one evolved long term evolution cell in the N cells, a cell with a largest signal measurement value in the at least one evolved long term evolution cell.

公开(公告)号：US20210013959A1

公开(公告)日：2021-01-14

申请号：US16990483

申请日：2020-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shitong Yuan ,  Mingzeng Dai ,  You Li ,  Xiaoli Shi ,  Rui Wang

IPC: H04B7/212 ,  H04W56/00 ,  H04B7/155

Abstract: A method for sending a synchronization signal in a relay system, and an apparatusthe method including receiving, by a relay node, synchronization signal information sent by a parent node through an air interface, where the synchronization signal information comprises at least one of a subcarrier spacing of a synchronization signal, information about an operating frequency band of the relay node, information about a physical broadcast channel of the relay node, a synchronization signal periodicity, or indication information of a synchronization signal obtaining manner, and sending, by the relay node, the synchronization signal based on the synchronization signal information.

公开(公告)号：US20200187070A1

公开(公告)日：2020-06-11

申请号：US16793752

申请日：2020-02-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rui Wang ,  Mingzeng Dai

IPC: H04W36/00 ,  H04W36/04 ,  H04W48/18 ,  H04W36/30

Abstract: This application provides a cell reselection method and apparatus. The method includes: measuring, by a terminal, reference signals of X neighboring cells that work on a target frequency, to obtain X signal measurement values; and if the terminal determines that signal measurement values of N cells in the X neighboring cells meet a cell reselection condition, using, by the terminal as a reselected cell when determining that there is at least one evolved long term evolution cell in the N cells, a cell with a largest signal measurement value in the at least one evolved long term evolution cell.

公开(公告)号：US20190261236A1

公开(公告)日：2019-08-22

申请号：US16403067

申请日：2019-05-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rui Wang ,  Mingzeng Dai

IPC: H04W36/00 ,  H04W36/30

Abstract: This application provides a cell reselection method and apparatus. The method includes: measuring, by a terminal, reference signals of X neighboring cells that work on a target frequency, to obtain X signal measurement values; and if the terminal determines that signal measurement values of N cells in the X neighboring cells meet a cell reselection condition, using, by the terminal as a reselected cell when determining that there is at least one evolved long term evolution cell in the N cells, a cell with a largest signal measurement value in the at least one evolved long term evolution cell.

公开(公告)号：US10201002B2

公开(公告)日：2019-02-05

申请号：US15630692

申请日：2017-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rui Wang ,  Rongdao Yu

IPC: H04J11/00 ,  H04B1/10 ,  H04W72/08 ,  H04W76/14 ,  H04L25/03 ,  H04B7/0417 ,  H04B7/04 ,  H04B17/345 ,  H04W92/18 ,  H04L5/00

Abstract: Embodiments of the present disclosure provide a method and a device for processing interference, wherein according to a first demodulation reference signal DMRS pilot symbol carried by a first subcarrier used by an uplink user equipment, an interference channel matrix of an uplink interference channel from the uplink user equipment to a D2D receiving end is measured, wherein the first subcarrier is a subcarrier shared by a D2D transmitting end and the uplink user equipment; a null space matrix of the uplink interference channel is calculated according to the interference channel matrix; and the signal received by the D2D receiving end via the first subcarrier is processed by using the null space matrix to eliminate an interference signal which comes from the uplink user equipment in the signal.