公开(公告)号：US20230057115A1

公开(公告)日：2023-02-23

申请号：US17980359

申请日：2022-11-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shaofeng XU ,  Qiyong ZHAO ,  Yutang ZHU

IPC: G01S13/58 ,  G01S13/931 ,  G01S7/35

Abstract: This application provides a signal detection method and apparatus, and a radar system, which may be applied to the internet of vehicles, intelligent vehicle, autonomous driving, or intelligent driving field. The signal detection method (700) includes: A first radar transmits a first sounding signal in a first time period of a first frame (710). The first radar transmits a second sounding signal in a second time period of the first frame (720). The first radar receives reflected signals corresponding to the first sounding signal and the second sounding signal (730). The first radar determines a false alarm target based on a difference between a first distance-velocity spectrum and a second distance-velocity spectrum (740). The second sounding signal is a signal obtained through first phase code modulation based on the first sounding signal. The signal detection method can be used to determine the false alarm target, and identify a real target, thereby improving a probability and reliability of detecting the correct target.

公开(公告)号：US20180027470A1

公开(公告)日：2018-01-25

申请号：US15722124

申请日：2017-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiong LI ,  Shaofeng XU

IPC: H04W36/30 ,  H04L5/14 ,  H04L5/22 ,  H04J3/16

CPC classification number: H04W36/30 ,  H04J3/1605 ,  H04L1/00 ,  H04L5/14 ,  H04L5/22 ,  H04W16/14 ,  H04W72/082

Abstract: The present invention provides a data transmission method and apparatus in a time division duplex wireless data transmission system, and a system. The method includes: performing, by a transmission device in a timeslot corresponding to an idle frame, interference detection on a to-be-detected frequency band corresponding to the idle frame, obtaining an interference detection result, updating interference statistics, and switching, according to the interference statistics when interference to a current operating frequency band is greater than a preset threshold, the operating frequency band to a frequency band that meets a condition. Therefore, service interruption caused by interference detection is avoided.