公开(公告)号：US20220022140A1

公开(公告)日：2022-01-20

申请号：US17490845

申请日：2021-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shuangshuang XING ,  Yiqun Wu ,  Xiaomeng Chai

IPC: H04W52/14 ,  H04W52/36 ,  H04W52/24 ,  H04W72/12 ,  H04W74/08

Abstract: The application provides a data sending method and a communication apparatus to avoid signaling overheads caused by scheduling by a network device, and a terminal device can flexibly select a quantity of repeated transmissions based on an actual situation, so that data transmission performance is improved. The network device sends configuration information of a receive power to the terminal device. After receiving the configuration information of the receive power, the terminal device determines a quantity of repeated transmissions of target data based on the configuration information of the receive power. After determining the quantity of repeated transmissions of the target data, the terminal device sends the target data to the network device based on the quantity of repeated transmissions of the target data.

公开(公告)号：US11201705B2

公开(公告)日：2021-12-14

申请号：US16990333

申请日：2020-08-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei Wang ,  Lei Zhang ,  Yiqun Wu ,  Yan Chen

IPC: H04K1/10 ,  H04L27/28 ,  H04L5/00

Abstract: A data modulation method includes dividing, by a terminal device, to-be-sent data into N bit groups, wherein N≥2 and N is an integer. The method also includes generating, by the terminal device, N complex symbol groups. An ith complex symbol group is obtained by processing an ith bit group based on a mapping rule corresponding to the ith bit group. The mapping rule corresponding to the ith bit group is determined based on at least a group identity of the ith bit group and a first parameter. The first parameter includes at least one of a pilot parameter, a hopping identity, a terminal device identity, a layer index of a non-orthogonal layer, or a hopping offset. The N bit groups correspond to at least two different mapping rules, 0≤i≤N−1, and i is an integer. The method further includes sending, by the terminal device, the N complex symbol groups.

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：US11018827B2

公开(公告)日：2021-05-25

申请号：US16200355

申请日：2018-11-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhaoyang Zhang ,  Xianbin Wang ,  Yu Zhang ,  Yiqun Wu

IPC: H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H03M13/13 ,  H04W74/08

Abstract: Embodiments of this application provide an information transmission method and an apparatus, to improve transmission reliability. The method includes: obtaining, by a terminal device, a to-be-sent pilot sequence, where the to-be-sent pilot sequence is a Reed-Muller sequence; and sending, by the terminal device, the to-be-sent pilot sequence.

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：US10805895B2

公开(公告)日：2020-10-13

申请号：US16196342

申请日：2018-11-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liqing Zhang ,  Yiqun Wu ,  Yan Chen ,  Yi Wang

IPC: H04W56/00 ,  H04L1/08 ,  H04L1/18 ,  H04W88/06 ,  H04W92/04

Abstract: In accordance to embodiments, methods, devices, and systems for determining initial transmissions in grant-free transmissions are disclosed. A UE receives a resource configuration for grant-free (GF) transmissions. The resource configuration comprises a periodicity parameter (P), a repetition number (K), and a sequence of redundancy version (RV) numbers corresponding to one or more RV types. The periodicity parameter defines a period having K transmission occasions (TOs), and each of the K TOs is associated with one RV number in the sequence of RV numbers. The UE performs an initial GF transmission of data in a TO of the K TOs in the period defined by the periodicity parameter. The TO is associated with an RV number corresponding to RV0.

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：US10736081B2

公开(公告)日：2020-08-04

申请号：US15701035

申请日：2017-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yiqun Wu ,  Alireza Bayesteh ,  Yan Chen ,  Jianglei Ma

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

Abstract: A method for non-orthogonal multiple access (NoMA) transmission is provided. In an embodiment, a method in a network device for transmission of a NoMA signal includes obtaining information bits. The method also includes transmitting the NoMA signal. The NoMA signal includes one or more layers. The NoMA signal is generated according to the information bits and according to a set of signal processing operations selected from a plurality of signal processing operations. At least one of the set of signal processing operations is layer-specific or UE-specific or a combination thereof.

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.