公开(公告)号：US20220394594A1

公开(公告)日：2022-12-08

申请号：US17890460

申请日：2022-08-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunhao Zhang ,  Xiuqiang Xu ,  Zhe Luo

IPC: H04W48/02 ,  H04W48/08

Abstract: Embodiments of this application disclose an access method and an apparatus. The method includes: a network device sends, in a first cell, information that indicates characteristic information of terminals allowed to access the first cell. A terminal determines, based on the indication of the information, whether to access the first cell. Alternatively, the terminal reports, in the first cell, characteristic information of the terminal to the network device, and the network device determines, based on the characteristic information reported by the terminal, whether to allow the terminal to access the first cell.

公开(公告)号：US11515972B2

公开(公告)日：2022-11-29

申请号：US16875824

申请日：2020-05-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuqiang Xu ,  Yan Chen ,  Liqing Zhang ,  Yi Wang ,  Yinggang Du ,  Yu Cao

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

Abstract: This application provides a method for determining a time-domain resource used for grant-free transmission. The method includes: obtaining, by a terminal device, a first time-domain period and a second time-domain period of grant-free transmission resources, where a size of the first time-domain period is P1 time units, a size of the second time-domain period is P2 time units, and P1 is greater than or equal to P2; obtaining, by the terminal device, a quantity k of grant-free transmission resources in the first time-domain period; and determining, by the terminal device based on the first time-domain period, the second time-domain period, and the quantity k of grant-free transmission resources in the first time-domain period, an index of a time unit in which a grant-free transmission resource used for grant-free transmission is located. In this way, grant-free transmission resources configured for the terminal device in two adjacent periods do not overlap.

公开(公告)号：US11483850B2

公开(公告)日：2022-10-25

申请号：US16925931

申请日：2020-07-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengyu Li ,  Jiafeng Shao ,  Yongxia Lyu ,  Dan Hu ,  Xiuqiang Xu ,  Yan Chen ,  Yi Wang

IPC: H04W4/00 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04

Abstract: An uplink information transmission method and apparatus are disclosed. The uplink information transmission method includes: receiving, by a terminal device, downlink control information DCI sent by a network device, and determining, based on the DCI, a transmission resource of a physical uplink shared channel PUSCH scheduled by using the DCI, where the transmission resource of the PUSCH overlaps a transmission resource of a physical uplink control channel PUCCH in time domain, and the PUCCH is used to carry to-be-transmitted uplink control information UCI; and when a first condition is met, sending, by the terminal device, uplink data on the PUSCH, and skipping sending the UCI on the PUSCH.

公开(公告)号：US11343030B2

公开(公告)日：2022-05-24

申请号：US16729287

申请日：2019-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuqiang Xu ,  Yiqun Wu ,  Yan Chen ,  Yi Wang

IPC: H04W24/10 ,  H04L1/18 ,  H04L1/00 ,  H04W72/04

Abstract: This application discloses a method for repeated transmission and a terminal device. The method implemented by a terminal device includes: determining a transmission time unit used in the first transmission of to-be-transmitted data; determining, by the terminal device based on the determined transmission time unit and a parameter Q, a hybrid automatic repeat request HARQ process used to transmit the to-be-transmitted data, where Q is an integer greater than or equal to 1; and when repeated transmission of the to-be-transmitted data is not terminated before the first specific transmission time unit, performing, starting from the determined transmission unit, one transmission of the to-be-transmitted data in each transmission time unit by using the HARQ process until the last transmission of the to-be-transmitted data is performed in the first specific transmission time unit, where a period of the specific transmission time unit in a time domain resource is Q transmission time units.

公开(公告)号：US11082166B2

公开(公告)日：2021-08-03

申请号：US16523941

申请日：2019-07-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiuqiang Xu ,  Yiqun Wu ,  Yan Chen

IPC: H04L1/18

Abstract: Embodiments provide a data retransmission method and a communications apparatus. The method includes: starting, by a transmit end, a timer before transmitting new data to a receive end, where a preset value of the timer is a maximum transmission latency corresponding to a service type of the data; retransmitting, by the transmit end, the data to the receive end when data needs to be retransmitted; transmitting, by the transmit end, the data to the receive end; and stopping sending, by the transmit end, retransmission data to the receive end when the timer expires, where the retransmission data is a part or all of the data. In this way, the following prior-art problem is avoided: Because a maximum retransmission quantity is not exhausted but a maximum transmission latency is exhausted, the transmit end still sends data, and consequently the receive end receives expiration data. This can avoid redundant transmission and save transmission resources.

公开(公告)号：US10972240B2

公开(公告)日：2021-04-06

申请号：US16539698

申请日：2019-08-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yiqun Wu ,  Yan Chen ,  Xiuqiang Xu

IPC: H04L5/00 ,  H04L27/26 ,  H04W4/00

Abstract: The present disclosure provides a pilot sequence transmission method and apparatus. A terminal device determines a first pilot number, determines a first pilot sequence and a second pilot sequence according to the first pilot number, respectively maps the first pilot sequence and the second pilot sequence to a first orthogonal frequency division multiplexing (OFDM) symbol and a second OFDM symbol of a grant free transmission resource, and sends the first pilot sequence and the second pilot sequence by using the first OFDM symbol and the second OFDM symbol. Therefore, a network device can determine activeness of the terminal device by detecting the first pilot sequence, and can detect only the second pilot sequence corresponding to the first pilot sequence, and does not need to detect all possible second pilot sequences, so that a quantity of detected pilots can be significantly reduced, and pilot detection complexity is reduced.

公开(公告)号：US20210045163A1

公开(公告)日：2021-02-11

申请号：US17081473

申请日：2020-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaomeng Chai ,  Yiqun Wu ,  Lei Wang ,  Xiuqiang Xu ,  Yan Chen

IPC: H04W74/08 ,  H04L27/26 ,  H04W72/04 ,  H04W76/11 ,  H04L5/00 ,  H04L1/18

Abstract: This application provides an asynchronous uplink transmission method, a device, and a storage medium. The method includes: receiving, by UE, configuration information that is of a first PUSCH and that is sent by a network device, where the configuration information includes a length of a cyclic prefix CP of the first PUSCH, and the length of the CP of the first PUSCH is less than a length of a CP of a first random access preamble; determining, by the UE based on the length of the CP of the first PUSCH, a difference between a largest stored timing advance TA and a smallest stored TA, and a largest delay spread, whether to send the first PUSCH; and if determining to send the first PUSCH, sending, by the UE, the first PUSCH based on the configuration information of the first PUSCH.

公开(公告)号：US10797827B2

公开(公告)日：2020-10-06

申请号：US16208505

申请日：2018-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yiqun Wu ,  Xiuqiang Xu ,  Yan Chen

IPC: H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04W74/02 ,  H04J13/10 ,  H04W76/11 ,  H03M13/27 ,  H04W74/08

Abstract: Embodiments of this application provide a grant-free transmission method, a terminal device, and a network device, to improve grant-free transmission reliability. The grant-free transmission method includes: obtaining, by a terminal device, an interleaving pattern based on at least one of a cell identity of the terminal device, a terminal device identifier, time-domain resource information, and frequency-domain resource information; interleaving data based on the obtained interleaving pattern, to obtain interleaved data; and sending the interleaved data.

公开(公告)号：US10470188B2

公开(公告)日：2019-11-05

申请号：US15630706

申请日：2017-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuqiang Xu ,  Yiqun Wu ,  Lu Rong ,  Shunqing Zhang ,  Yan Chen

IPC: H04W72/04 ,  H04W72/12 ,  H04W76/27 ,  H04B7/06 ,  H04W72/06 ,  H04B7/0456 ,  H04J11/00 ,  H04L1/06 ,  H04L5/00 ,  H04L25/03

Abstract: The present invention discloses an indication information transmission method and apparatus. The method includes: determining, in one or more codebooks, a first codebook used to send a first downlink data stream to a terminal device; determining one or more second codebooks used to send a second downlink data stream; determining codebook indication information used to indicate the first codebook and the one or more second codebooks; and sending the codebook indication information to the terminal device.

公开(公告)号：US20180014320A1

公开(公告)日：2018-01-11

申请号：US15693907

申请日：2017-09-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiuqiang Xu ,  Lei Wang ,  Shunqing Zhang ,  Yan Chen

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

CPC classification number: H04W72/1268 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0051 ,  H04W72/005 ,  H04W72/04 ,  H04W72/048

Abstract: Embodiments disclose an uplink data transmission method and apparatus. The method includes: determining M transmission areas allocated to a terminal device, and generating first information used to indicate the M transmission areas, where M is a positive integer, and the transmission area represents an air interface time-frequency resource that includes a time range and a frequency range that are specified by a communications system. The method also includes determining, for each transmission area of the M transmission areas, second information used to indicate a transport block size. The method also includes sending an indication message to the terminal device, so that the terminal device transmits uplink data according to the indication message, where the indication message includes the first information and the second information.