公开(公告)号：US20210058885A1

公开(公告)日：2021-02-25

申请号：US17094547

申请日：2020-11-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hua Shao ,  Zhe Liu ,  Huang Huang

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/12

Abstract: This application provides a method and an apparatus for determining an effective time of a timing advance (TA). The method includes: determining a first subcarrier spacing from M subcarrier spacings, where the M subcarrier spacings are subcarrier spacings of L carriers used by a terminal device, and L≥M≥2; and determining an effective time of a timing advance (TA) of each of the L carriers based on the first subcarrier spacing.

公开(公告)号：US20210037576A1

公开(公告)日：2021-02-04

申请号：US17072969

申请日：2020-10-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hua Shao ,  Huang Huang ,  Mao Yan ,  Kuandong Gao

IPC: H04W74/08 ,  H04L1/18 ,  H04W52/36 ,  H04L5/00 ,  H04W72/04 ,  H04W76/11

Abstract: This application discloses a communications method and apparatus. The method includes: sending, by a terminal device, a first message to a network device, where the first message includes a first random access preamble and first data, and a first redundancy version is used for the first data; and determining, by the terminal device, that the first data fails to be sent, and retransmitting the first data, where a second redundancy version is used for the first data. The corresponding communications apparatus is further disclosed. An incremental redundancy manner is used in a retransmission procedure of random access data.

公开(公告)号：US20210014804A1

公开(公告)日：2021-01-14

申请号：US16941137

申请日：2020-07-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huang Huang ,  Kuandong Gao ,  Mao Yan ,  Hua Shao

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/04 ,  H04W74/02 ,  H04W74/08

Abstract: This application discloses a communications method and apparatus. The method includes: obtaining, by a terminal device, downlink synchronization signal block index information; receiving, by the terminal device, information used to indicate an association relationship between a random access resource RO and a synchronization signal block; and accessing, by the terminal device, a network device based on the information on an RO corresponding to the synchronization signal block index information. This application further discloses a corresponding apparatus. A time-frequency location of a random access resource associated with each downlink synchronization signal is indicated, so that the terminal device obtains, through downlink synchronization, a time-frequency location for sending an uplink random access signal, to avoid a blind attempt of the terminal device and a beam mismatch of the network device occurring when the network device receives a random access signal, thereby improving efficiency.

公开(公告)号：US20200186308A1

公开(公告)日：2020-06-11

申请号：US16786435

申请日：2020-02-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mao Yan ,  Huang Huang

IPC: H04L5/00 ,  H04W74/08 ,  H04W72/04 ,  H04W74/00 ,  H04B7/06 ,  H04W72/08

Abstract: This application discloses a signal transmission method. The method may include: obtaining, by a terminal, a first configuration parameter; determining, by the terminal based on the first configuration parameter from random access resources separately associated with a plurality of downlink signals, a random access resource used for random access preamble retransmission; and retransmitting, by the terminal, a random access preamble by using the random access resource used for random access preamble retransmission.

公开(公告)号：US10582543B2

公开(公告)日：2020-03-03

申请号：US16268309

申请日：2019-02-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huang Huang ,  Mao Yan ,  Kuandong Gao

IPC: H04W74/08 ,  H04L5/00 ,  H04W56/00 ,  H04W72/12

Abstract: This application provides a random access method, a terminal, and a network device. The random access method includes: determining, by a terminal, whether a resource used for random access conflicts with a resource used for receiving a downlink signal; and if the resource used for the random access conflicts with the resource used for the downlink signal, preferentially using the conflicting random access resource for receiving the downlink signal but not for the random access. This avoids a conflict between receiving of the downlink signal and sending of an uplink random access preamble.

公开(公告)号：US20200045748A1

公开(公告)日：2020-02-06

申请号：US16600279

申请日：2019-10-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mao Yan ,  Lei Chen ,  Huang Huang

IPC: H04W74/08 ,  H04W76/11

Abstract: This application discloses a random access method; the random access method includes: sending a random access preamble to a network device; receiving a random access response from the network device according to a random access radio network temporary identifier (RA-RNTI); wherein: the RA-RNTI is related to a group index of a random access occasion group to which a random access occasion of the random access preamble belongs. This application further discloses a corresponding random access response method, terminal device, and network device.

公开(公告)号：US10523487B2

公开(公告)日：2019-12-31

申请号：US15341543

申请日：2016-11-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huang Huang ,  Xi Yan ,  Sainan Li

IPC: H04L27/26 ,  H04L7/00 ,  H04W56/00

Abstract: Embodiments of the present invention provide a frame synchronization method and apparatus, which can reduce impact of a carrier frequency offset. In those embodiment, a solution is provided and the solution includes: obtaining a received signal of a receiving antenna; calculating an auto-correlation value of the received signal and determining a time corresponding to the auto-correlation value that is of the received signal and that meets a first preset condition, as an initial estimation time; obtaining a carrier frequency offset estimation value according to the initial estimation time, the received signal, and a frequency offset estimation algorithm, and performing frequency offset compensation on the received signal by using the carrier frequency offset estimation value; calculating a cross-correlation value and an auto-correlation value of the received signal on which the frequency offset compensation has been performed. The embodiments of the present invention are used for frame synchronization.

公开(公告)号：US10523303B2

公开(公告)日：2019-12-31

申请号：US16154692

申请日：2018-10-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huang Huang ,  Wenxian Jiang ,  Sainan Li

IPC: H04B7/08 ,  H04B7/06 ,  H04B7/04 ,  H04B7/0408

Abstract: This application discloses a method and an apparatus for transmitting a signal in a wireless communications system. The method includes: sending or receiving a signal of a first beam in a first beam set within a communication time of the first beam; and sending or receiving a signal of a third beam in a second beam set within a switching gap for switching from the first beam to a second beam in the first beam set. According to the method and the apparatus for transmitting a signal in a wireless communications system in embodiments of this application, overheads can be reduced.

公开(公告)号：US20190273550A1

公开(公告)日：2019-09-05

申请号：US16414247

申请日：2019-05-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sainan Li ,  Huang Huang ,  Yalin Liu

IPC: H04B7/06 ,  H04W72/04 ,  H04L5/00 ,  H04L1/00

Abstract: A communication method and a terminal device are provided. The method includes: generating one or more radio frames, where each radio frame includes at least one multiplexing block, each multiplexing block includes a synchronization signal and a PBCH field, and the PBCH field includes information for indicating a beam; and then sending the radio frames to a terminal device.

公开(公告)号：US10098125B2

公开(公告)日：2018-10-09

申请号：US15636254

申请日：2017-06-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lanjie Yuan ,  Jiebo Yuan ,  Guangjian Wang ,  Yi Wang ,  Huang Huang

IPC: H04W72/04 ,  H04W64/00 ,  H04W16/28 ,  H04W72/08 ,  H04W84/04

Abstract: A method and an apparatus for aligning antenna beams in a high-low frequency co-site network, where the method includes performing antenna alignment of a low frequency beam with a communications device in order to establish a low frequency channel, and performing high frequency beam alignment of a high frequency antenna with the communications device using the low frequency channel. In the method, high frequency beam alignment of a high frequency antenna is performed using an established low frequency channel. Therefore, a technical problem that a high frequency beam alignment time of a high frequency antenna is long due to a narrow field of view of a high frequency beam can be avoided in order to quickly implement high frequency beam alignment of a high frequency antenna.