公开(公告)号：US20170019287A1

公开(公告)日：2017-01-19

申请号：US15280016

申请日：2016-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yang YANG ,  Xiaohu Tang ,  Yalin Liu ,  Jun Zhu

IPC: H04L27/26 ,  H04W52/52 ,  H04L7/04

CPC classification number: H04L27/2655 ,  H04L7/041 ,  H04L27/2613 ,  H04L27/2646 ,  H04L27/2663 ,  H04L27/2694 ,  H04W52/52 ,  H04W84/12

Abstract: Embodiments of the present invention provide a signal transmission method and apparatus, which can implement fast initial time synchronization. The method includes: generating, by a transmit-end device, an initial short training sequence, where the initial short training sequence includes M sub-sequences b, and the sub-sequence b includes N transmission sampling points; determining a quantity of reception sampling points used by a receive-end device when the receive-end device performs autocorrelation processing; generating a symbol sequence according to the quantity of the reception sampling points, and generating a target short training sequence according to the symbol sequence and the initial short training sequence; and sending a target signal to the receive-end device, where a short training sequence field of the target signal carries a short training sequence symbol, and the short training sequence symbol is used to indicate the target short training sequence.

Abstract translation: 本发明的实施例提供了一种能够实现快速初始时间同步的信号传输方法和装置。 该方法包括：通过发送端设备生成初始短训练序列，其中初始短训练序列包括M个子序列b，子序列b包括N个传输采样点; 当接收端设备执行自相关处理时，确定接收端设备使用的接收采样点的数量; 根据接收采样点的数量生成符号序列，根据符号序列和初始短训练序列生成目标短训练序列; 并向所述接收端装置发送目标信号，其中，所述目标信号的短训练序列字段携带短训练序列符号，并且所述短训练序列符号用于指示所述目标短训练序列。

公开(公告)号：US20230115766A1

公开(公告)日：2023-04-13

申请号：US18073381

申请日：2022-12-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dandan Liang ,  Ming Gan ,  Zhengchun Zhou ,  Xianfu Lei ,  Yang Yang ,  Xiaohu Tang ,  Wei Lin ,  Chenchen Liu

IPC: H04L5/00 ,  H04L1/00

Abstract: Embodiments of this application provide a method and an apparatus for transmitting a physical layer protocol data unit, to design a short training field sequence for a larger channel bandwidth. The short training field sequence designed in this application has a smaller peak-to-average power ratio PAPR and better performance. The method includes: generating a physical layer protocol data unit PPDU that complies with the 802.11be standard, where the PPDU includes a short training field, and a quantity of subcarriers of a frequency domain sequence of the short training field is greater than 2048; and sending the PPDU on a target channel, where a bandwidth of the target channel is greater than or equal to 160 MHz.

公开(公告)号：US10187242B2

公开(公告)日：2019-01-22

申请号：US15280016

申请日：2016-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yang Yang ,  Xiaohu Tang ,  Yalin Liu ,  Jun Zhu

IPC: H04L27/26 ,  H04L7/04 ,  H04W52/52 ,  H04W84/12

Abstract: Embodiments of the present invention provide a signal transmission method and apparatus, which can implement fast initial time synchronization. The method includes: generating, by a transmit-end device, an initial short training sequence, where the initial short training sequence includes M sub-sequences b, and the sub-sequence b includes N transmission sampling points; determining a quantity of reception sampling points used by a receive-end device when the receive-end device performs autocorrelation processing; generating a symbol sequence according to the quantity of the reception sampling points, and generating a target short training sequence according to the symbol sequence and the initial short training sequence; and sending a target signal to the receive-end device, where a short training sequence field of the target signal carries a short training sequence symbol, and the short training sequence symbol is used to indicate the target short training sequence.

公开(公告)号：US10135589B2

公开(公告)日：2018-11-20

申请号：US15255479

申请日：2016-09-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yong Wang ,  Xiaohu Tang ,  Rui Ni

IPC: H04L5/00 ,  H04L27/26 ,  H04B7/04 ,  H04B7/0456

Abstract: Embodiments of the present disclosure provide methods and devices for inserting and extracting a pilot sequence according to a pilot mapping indicating a location for inserting the pilot sequence in a plurality of time-frequency resources. One example method includes inserting, by a transmitter according to pilot mappings corresponding to Nt transmit antenna ports by using Nt orthogonal pilot sequences that are different from each other, a pilot sequence corresponding to each of the transmit antenna ports into OFDM symbols that are included in the pilot mapping corresponding to the transmit antenna port. There is a one-to-one correspondence between the Nt pilot sequences and the Nt transmit antenna ports of the transmitter, where Nt is a positive integer greater than or equal to 2. The pilot mappings corresponding to the transmit antenna ports are the same among the Nt transmit antenna ports.