公开(公告)号：US20210014016A1

公开(公告)日：2021-01-14

申请号：US17037407

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fengwei LIU ,  Lei CHEN

IPC: H04L5/00 ,  H04W24/10

Abstract: Embodiments of this application disclose a reference signal transmission method and apparatus for a relay node to transmit a reference signal to a base station. The method includes receiving, by a first node, a first configuration message sent by a second node, where the first configuration message includes information about a resource for transmitting a first reference signal. The method includes sending, by the first node, the first reference signal through a first port based on the first configuration message. The method further includes performing, by the second node, a channel measurement on the first reference signal to determine an interference from a first data signal sent by the first node to a third node to a data signal sent by the first node to the second nod. The method further includes sending, by the first node, the first data signal to the third node through a second port.

公开(公告)号：US20200336260A1

公开(公告)日：2020-10-22

申请号：US16918507

申请日：2020-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fengwei LIU ,  Lei CHEN ,  Jing QIU ,  Xiaoyong TANG

IPC: H04L5/00 ,  H04W56/00

Abstract: Examples synchronization signal configuration methods and apparatus are described. One example method is applied to a relay network including a first node and a second node, and the first node is a parent node of the second node. The example method includes sending synchronization signal configuration information by the first node to the second node, where the synchronization signal configuration information is used to indicate M first synchronization signal time-frequency positions and N second synchronization signal time-frequency positions in a candidate synchronization signal time-frequency position set. The first synchronization signal time-frequency position is used by the second node to send a first synchronization signal, the second synchronization signal time-frequency position is used by the second node to receive or detect a second synchronization signal, the candidate synchronization signal time-frequency position set includes W synchronization signal time-frequency positions, and W≥(M+N).

公开(公告)号：US20200304255A1

公开(公告)日：2020-09-24

申请号：US16894077

申请日：2020-06-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dan WU ,  Lei CHEN ,  Jing QIU

IPC: H04L5/00 ,  H04B7/155 ,  H04W56/00

Abstract: Embodiments of this application provide a resource configuration method. The method includes: sending, by a first communications device, a first message to a second communications device, wherein the first message includes information associated with an available symbol for backhaul transmission, the first communications device is a relay node, and the second communications device is a base station or a relay node; and receiving, by the first communications device, a second message from the second communications device, wherein the second message includes information associated with a symbol to be occupied by the first communications device to perform backhaul transmission.

公开(公告)号：US20200288485A1

公开(公告)日：2020-09-10

申请号：US16881275

申请日：2020-05-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei CHEN ,  Fengwei LIU ,  Jing QIU

IPC: H04W72/12 ,  H04W72/04 ,  H04W80/08 ,  H04W28/26

Abstract: This application provides a scheduling method, to implement flexible scheduling in a relay network. The method includes: determining, by a first device, information about a transmission time difference, where the transmission time difference is a time difference between a control channel of a first link and a data channel that is of the first link and that is scheduled by the control channel of the first link; notifying a second device of the information about the transmission time difference; and performing, by the second device, scheduling based on the information about the transmission time difference. In this way, the second device determines whether a resource needs to be reserved for the data channel of the first link, and it is possible that a time division resource, a frequency division resource, or a space division resource is shared for data of the first link and data of a second link.

公开(公告)号：US20200052944A1

公开(公告)日：2020-02-13

申请号：US16659310

申请日：2019-10-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi ZHANG ,  Fengwei LIU ,  Lei CHEN ,  Minghui XU

IPC: H04L27/26 ,  H04L5/00 ,  H04J13/00

Abstract: A PTRS processing method and an apparatus. The method includes: receiving, by a terminal, first indication information and second indication information from a network device, where the first indication information is used to indicate a time-domain location at which a PTRS is to be sent by the terminal, and the second indication information is used to indicate an offset of an initial time-domain location to which the PTRS is mapped by the terminal; mapping, by the terminal, the PTRS to one or more DFT-s-OFDM symbols based on the first indication information and the second indication information; and sending, by the terminal, the one or more DFT-s-OFDM symbols. In this way, the PTRS mapped to the DFT-s-OFDM symbol is offset at a DFT-s-OFDM symbol level, so that PTRS collision between terminals can be avoided to an extent, thereby improving phase tracking precision.

公开(公告)号：US20190342137A1

公开(公告)日：2019-11-07

申请号：US16518574

申请日：2019-07-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi ZHANG ,  Minghui XU ,  Lei CHEN

IPC: H04L27/26 ,  H04L5/00 ,  H04L27/20

Abstract: An information transmission method related to the field of communications technologies includes: generating an orthogonal frequency division multiplexing (OFDM) symbol, where the OFDM symbol includes a pi/2-BPSK modulated data signal and a pi/2-binary phase shift keying (BPSK) modulated phase tracking reference signal (PTRS); and sending the OFDM symbol. This method may be applied to an uplink single carrier transmission scenario or a downlink single carrier transmission scenario.

公开(公告)号：US20190132247A1

公开(公告)日：2019-05-02

申请号：US16232942

申请日：2018-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi ZHANG ,  Lei CHEN ,  Mao YAN

IPC: H04L12/801 ,  H04L12/26 ,  H04L12/24

Abstract: A signal transmission method and apparatus are provided. The method includes: obtaining, by a transmitter, a to-be-sent data block; inserting one or more pilot blocks among a plurality of pieces of data of the to-be-sent data block based on an agreed position; and sending, by the transmitter, the to-be-sent data block into which the one or more pilot blocks are inserted. Inserting the one or more pilot blocks among the plurality of pieces of data of the to-be-sent data block can improve a phase noise compensation effect for a receiver without increasing pilot overheads.

公开(公告)号：US20180278291A1

公开(公告)日：2018-09-27

申请号：US15992988

申请日：2018-05-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yalin LIU ,  Lei CHEN

IPC: H04B1/66 ,  H04L5/00

CPC classification number: H04B1/667 ,  H04L5/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0092 ,  H04L5/0094 ,  H04L5/14 ,  H04W72/04 ,  H04W72/0453

Abstract: Embodiments of the present invention provide a data transmission method for a multi-transmission time interval TTI system, including: generating a data frame including a self-contained feedback; and transmitting the data frame on a plurality of subbands obtained by dividing one carrier, where at least two of the plurality of subbands have different TTIs; and parameters of self-contained feedbacks of the at least two of the plurality of subbands are the same, and time lengths of the self-contained feedbacks of the at least two of the plurality of subbands are the same. By configuring a self-contained feedback across subbands, a problem of excessively low resource utilization of self-contained feedbacks resulting from different TTIs and waveform parameter configurations of the subbands can be resolved. According to the embodiments of the present invention, resource utilization of the self-contained feedback can be improved.

公开(公告)号：US20170179594A1

公开(公告)日：2017-06-22

申请号：US15454693

申请日：2017-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiqiang LIAO ,  Lei CHEN ,  Huifan LIN ,  Xinneng LUO

IPC: H01Q3/32 ,  H01Q9/04 ,  H01Q1/24

CPC classification number: H01Q3/32 ,  H01P1/184 ,  H01Q1/246 ,  H01Q9/0485

Abstract: A phase shifter includes a cavity (100) and a first fixed transmission line (301), a second fixed transmission line (302), and a slidable transmission line (201) that are located in the cavity (100). The first fixed transmission line (301) is provided with a first open slot (3011), the second fixed transmission line (302) is provided with a second open slot (3021), and opening directions of the first open slot (3011) and the second open slot (3021) are opposite to each other. Two ends of the slidable transmission line (201) are respectively clamped in the first open slot (3011) and the second open slot (3021), so that the slidable transmission line (201) is electrically connected to the first fixed transmission line (301) and the second fixed transmission line (302). The slidable transmission line (201) slides relative to the first fixed transmission line (301) and the second fixed transmission line (302).

公开(公告)号：US20170163456A1

公开(公告)日：2017-06-08

申请号：US15438512

申请日：2017-02-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei CHEN

IPC: H04L27/26

CPC classification number: H04L27/2602 ,  H04L5/0007 ,  H04L5/0037 ,  H04L27/264

Abstract: Embodiments of the present invention relate to the field of communications technologies, and disclose methods for generating and processing a frequency division multi-waveform signal, and apparatuses, which enable one system to support multiple multicarrier technologies at the same time. The method for generating a frequency division multi-waveform signal provided in the embodiments of the present invention includes: mapping first-type to-be-sent data streams to subcarriers corresponding to a first waveform component to generate M frequency domain symbols, and mapping second-type to-be-sent data streams to subcarriers corresponding to a second waveform component to generate N frequency domain symbols, where M and N are both positive integers; performing frequency domain filtering on the M frequency domain symbols and the N frequency domain symbols; and generating a time domain signal from the M frequency-domain-filtered frequency domain symbols and the N frequency-domain-filtered frequency domain symbols.