公开(公告)号：US10903955B2

公开(公告)日：2021-01-26

申请号：US16385252

申请日：2019-04-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiang Wu ,  Yiqun Qian ,  Yang Li ,  Jianghua Liu

IPC: H04L5/00 ,  H04W72/04

Abstract: The present invention discloses a method, a device and a system for transmitting an enhanced downlink control channel, which belong to the communications field. The method for sending an enhanced downlink control channel includes: presetting a multiplexing unit, where the multiplexing unit includes at least one resource block pair, and the at least one resource block pair includes E-PDCCH resources and DM RS resources, and the E-PDCCH resources include multiple control channel elements; sending at least one E-PDCCH corresponding to at least one UE in at least one control channel element of the multiplexing unit, and sending the DM RS corresponding to the at least one UE. The present invention reduces the granularity of an enhanced downlink control channel, saves resources and enhances the downlink control channel, thereby providing more control channels for the UE to use.

公开(公告)号：US10892865B2

公开(公告)日：2021-01-12

申请号：US15729400

申请日：2017-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Qiang Wu

IPC: H04L5/00 ,  H04W72/04 ,  H04W24/10

Abstract: A method includes: obtaining, by UE, a reference signal resource mapping diagram, and obtaining a reference signal according to the reference signal resource mapping diagram; performing, by the UE, channel measurement according to the reference signal to determine channel state information, and feeding back the channel state information to a base station, where the reference signal resource mapping diagram is a location to which a time-frequency resource of the reference signal is mapped, the reference signal resource mapping diagram is a second reference signal resource mapping diagram which comprises at least two first reference signal resource mapping diagram.

公开(公告)号：US10856285B2

公开(公告)日：2020-12-01

申请号：US16282732

申请日：2019-02-22

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jianqin Liu ,  Jianghua Liu ,  Qiang Wu ,  Chi Gao

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

Abstract: The present application provides a method and an apparatus for allocating control channel candidates, which relate to the communications field, and can allocate control channel candidates at different aggregation levels to K ePDCCH sets and reduce complexity of blind detection performed by a UE. The method includes: determining K sets for transmitting a control channel, where each set in the K sets includes at least one physical resource block pair; and allocating control channel candidates at each aggregation level to at least one set in the K sets according to at least one of aggregation levels supported by the control channel to be transmitted, the number of control channel candidates corresponding to each aggregation level, the K sets for transmitting the control channel, and types of the sets.

公开(公告)号：US20200295908A1

公开(公告)日：2020-09-17

申请号：US16887800

申请日：2020-05-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Jianghua Liu ,  Qiang Wu

IPC: H04L5/00 ,  H04W24/06 ,  H04B7/06

Abstract: A reference signal measurement method, a reference signal sending method, a user equipment, and a base station are provided. According to the embodiments of the present application, a user equipment determines reference signal resource configuration, which includes reference signal port configuration, reference signal subframe configuration, and reference signal configuration, and a quantity of ports configured in the reference signal port configuration is N; receives a reference signal according to the reference signal resource configuration; and performs measurement based on the received reference signal to obtain channel state information and/or signal quality information. In the embodiments of the present invention, a quantity of ports configured in the reference signal port configuration is N; and a quantity of supported ports may vary with different values of N.

公开(公告)号：US10673599B2

公开(公告)日：2020-06-02

申请号：US16034883

申请日：2018-07-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianguo Wang ,  Jianghua Liu ,  Qiang Wu

IPC: H04L5/00 ,  H04W24/06 ,  H04B7/06 ,  H04B17/318

Abstract: A reference signal measurement method, a reference signal sending method, a user equipment, and a base station are provided. According to solutions in the embodiments of the present application, a user equipment determines reference signal resource configuration, which includes reference signal port configuration, reference signal subframe configuration, and reference signal configuration, and a quantity of ports configured in the reference signal port configuration is N; receives a reference signal according to the reference signal resource configuration; and performs measurement based on the received reference signal to obtain channel state information and/or signal quality information. In the embodiments of the present invention, a quantity of ports configured in the reference signal port configuration is N; and a quantity of supported ports may vary with different values of N.

公开(公告)号：US10659111B2

公开(公告)日：2020-05-19

申请号：US16123340

申请日：2018-09-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianghua Liu ,  Qiang Wu ,  Chi Gao

IPC: H04B7/0413 ,  H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04L1/06 ,  H04W72/04 ,  H04B7/0452 ,  H04L25/03 ,  H04W84/04

Abstract: Embodiments of the present invention disclose a method and an apparatus for transmitting data, and the method includes: first setting at least two second resource groups in each first resource group of at least one first resource group, and setting at least two reference signals in each of the second resource groups; then encoding data to be transmitted and generating two data streams from the encoded data; then, mapping the two data streams onto an available resource element of two different antenna ports, in which the reference signals corresponding to the two different antenna ports are set on two different second resource groups; and finally, transmitting, on the available resource element of the two different antenna ports, data on the two antenna ports. The present invention is applicable to the field of communications systems.

公开(公告)号：US20200092919A1

公开(公告)日：2020-03-19

申请号：US16688493

申请日：2019-11-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yue Zhao ,  Zhiheng Guo ,  Qiang Wu

IPC: H04W74/08 ,  H04L27/26 ,  H04L5/00

Abstract: Embodiments of the present application provide a random access sequence generation method, and an apparatus. The method includes: generating, by a base station, notification signaling, where the notification signaling includes indication information, the indication information is used to instruct user equipment UE to select a shift sequence number from a range of 0 to (nshiftRAngroupRA+nshiftRA+nshiftRA+shiftRA−1), the shift sequence number is an integer, nshiftRA is a quantity of UE candidate sequence shifts in a group, ngroupRA is a quantity of groups, nshiftRA is a quantity of UE candidate sequence shifts in the last length that is insufficient for a group, nshiftRA is a quantity of UE candidate sequence shifts in first remaining sequence shifts, and shiftRA is a quantity of UE candidate sequence shifts in second remaining sequence shifts; and sending, by the base station, the notification signaling to the UE, so that the UE generates a random access sequence according to the indication information.

公开(公告)号：US10575292B2

公开(公告)日：2020-02-25

申请号：US15630837

申请日：2017-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Chaojun Li ,  Qiang Wu

IPC: H04W72/04 ,  H04L5/00

Abstract: Embodiments of the present invention provide methods for transmitting and receiving a control channel, a base station, and a user equipment, which relate to the communication field, and can solve a transmission problem of available changing transmission resources caused by introduction of an E-PDCCH. A method includes determining, by a terminal device, a resource set and resource elements (REs) of predetermined overheads in the resource set. The REs of the predetermined overheads include an RE of at least one of a paging channel and a synchronization channel, with at least one of following REs: an RE of a channel state information-reference signal (CSI-RS), an RE of a cell-specific reference signal (CRS), an RE of a demodulation reference signal (DMRS), or a muted RE. The terminal device receives from a base station, a control channel on an RE subset comprised in the resource set, wherein the RE subset comprises a part of the REs in the resource set and do not contain the REs of the predetermined overheads.

公开(公告)号：US20190288784A1

公开(公告)日：2019-09-19

申请号：US16345148

申请日：2016-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yue Zhao ,  Zhiheng Guo ,  Qiang Wu ,  Xingqing Cheng

IPC: H04J13/00 ,  H04L27/26

Abstract: This application relates to the mobile communications field, and in particular, to a random access technology in a wireless communications system. This application provides a method for sending a random access preamble sequence, an apparatus, and a system. In this solution, a terminal device obtains a cyclic shift value that satisfies a high-speed movement scenario and sends a random access preamble sequence corresponding to the cyclic shift value. Impact brought by the high-speed movement scenario is considered when the random access preamble sequence is determined, thereby avoiding interference between terminal devices in the high-speed scenario.

公开(公告)号：US10383123B2

公开(公告)日：2019-08-13

申请号：US15840659

申请日：2017-12-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Jianqin Liu ,  Jianghua Liu

IPC: H04W72/04 ,  H04L12/26 ,  H04W24/02 ,  H04L5/00 ,  H04W88/08 ,  H04W72/02 ,  H04W72/12

Abstract: The present disclosure describes a physical downlink control channel (PDCCH) candidate determining method and device, and relates to the field of wireless communications, so as to avoid PDCCH blocking and improve reliability of control information transmission. The method of the present invention includes: determining an PDCCH resource set p in a subframe k, where the PDCCH resource set p includes NECCE,p,k=q×r enhanced control channel elements (ECCEs), an PDCCH candidate of an PDCCH with an aggregation level being L corresponds to L ECCEs having consecutive reference numerals, and an PDCCH candidate is capable of carrying an PDCCH; and determining the number of PDCCH candidates at the aggregation level L of a carrier corresponding to an index Cellindex and an ECCE corresponding to each PDCCH candidate, where the ECCE corresponding to each PDCCH candidate at the aggregation level L is related to the index Cellindex.