公开(公告)号：US20190229881A1

公开(公告)日：2019-07-25

申请号：US16369353

申请日：2019-03-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yueying ZHAO ,  Jian ZHANG ,  Ju LIU ,  Dongyu CHU ,  Changqing ZHU

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Embodiments of this application provide a method and an apparatus for setting a symbol in a communications system that uses a plurality of subcarrier spacings. The method includes: obtaining, by a terminal, a length of a reference blank symbol, where the length of the reference blank symbol is associated with a first subcarrier spacing, and the first subcarrier spacing is a minimum subcarrier spacing in the plurality of subcarrier spacings; and setting, by the terminal based on the length of the reference blank symbol and time domain information of the reference blank symbol, a blank symbol for a subcarrier corresponding to a second subcarrier spacing in the plurality of subcarrier spacings. According to the method and apparatus for setting a symbol provided in the embodiments of this application, when setting, based on the length of the reference symbol, a blank symbol in a subframe corresponding to a subcarrier used by the terminal, the terminal may set one or more complete symbols as blank symbols. This avoids a case in which a symbol cannot work normally because a part of the symbol is set as a blank symbol, thereby improving spectral efficiency of the system.

公开(公告)号：US20190219688A1

公开(公告)日：2019-07-18

申请号：US16366910

申请日：2019-03-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ju LIU ,  Dongyu CHU ,  Changqing ZHU ,  Wei YE ,  Yueying ZHAO ,  Jian ZHANG

IPC: G01S13/89 ,  G01S7/00 ,  G01S7/41

CPC classification number: G01S13/89 ,  G01S7/006 ,  G01S7/415 ,  G01S13/003 ,  G01S13/86 ,  H04L29/02

Abstract: Embodiments of the present disclosure relate to an environment perception method and a base station. The method includes: sending, by a base station, an electromagnetic perception signal to a to-be-perceived region; receiving electromagnetic feedback signals transmitted, scattered, and reflected from an ambient environment of the to-be-perceived region and an object in the to-be-perceived region; and calculating environment information of the to-be-perceived region based on the electromagnetic feedback signals and the electromagnetic perception signal. In this way, environment information of a coverage area of the base station can be determined. In addition, environment information update frequency may be dynamically adjusted by setting a detection period for sending an electromagnetic perception signal, so as to meet environment information detection requirements of different applications, for example, real-time detection on environment information and high resolution detection on environment information.