公开(公告)号：US20220231887A1

公开(公告)日：2022-07-21

申请号：US17716502

申请日：2022-04-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ying ZHANG ,  Weihua WANG ,  Chunhui LE

IPC: H04L25/02

Abstract: This application discloses a channel estimation method and apparatus. When time-domain channel estimation is performed on a first slot, the first slot and at least one second slot are first determined. The first slot and each second slot form continuous slots. Then, a first signal corresponding to the first slot and a second signal corresponding to each second slot are obtained, and a time-domain channel estimate for the first slot is determined based on the first signal and each second signal. In embodiments of this application, when a time-domain channel estimate for a specific slot is determined, time-domain channel estimation is performed by using time-domain correlation of channels in combination with signals of a plurality of slots, so as to obtain a more accurate channel estimation result, thereby improving baseband demodulation performance.

公开(公告)号：US20210258055A1

公开(公告)日：2021-08-19

申请号：US17313123

申请日：2021-05-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiao HAN ,  Ying ZHANG ,  Zhiwei CHEN ,  Junhao JIANG ,  Yan LONG ,  Rong HE

IPC: H04B7/06

Abstract: This application provides a beam training method and apparatus. The method includes: generating and sending a set up frame, where the set up frame includes M pieces of time information, each piece of time information corresponds to one receiving device in the M receiving devices, each piece of time information is used to indicate a feedback information sending moment of the corresponding receiving device, each piece of time information is further used to indicate an acknowledgment information receiving moment of the corresponding receiving device, receiving a sector sweep SSW frame, generating feedback information based on the SSW frame, sending the feedback information at a feedback information sending moment indicated by corresponding time information, receiving, at an acknowledgment information receiving moment indicated by the corresponding time information, acknowledgment information. Therefore, a training time can be shortened, and signaling overheads can be reduced.

公开(公告)号：US20210328674A1

公开(公告)日：2021-10-21

申请号：US17365756

申请日：2021-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ying ZHANG ,  Huafeng LIN ,  Yuanmou LI ,  Xiaoyuan WU ,  Jun ZHANG

IPC: H04B10/27 ,  H04B10/25 ,  H04Q11/00

Abstract: This application provides example optical communications apparatuses. One example optical communications apparatus includes a control apparatus and an optical module matching apparatus. The control apparatus can output a first control signal to the control end. An input end of the optical module matching apparatus can connect to a first optical module and receive a first electrical signal output by the first optical module. An output end of the optical module matching apparatus can output a first serial signal. The control apparatus can output a second control signal to the control end. The input end of the optical module matching apparatus can receive a second electrical signal output by the second optical module. The output end of the optical module matching apparatus can output a second serial signal. The first electrical signal and the second electrical signal can have different level types.

公开(公告)号：US20200327087A1

公开(公告)日：2020-10-15

申请号：US16913818

申请日：2020-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ying ZHANG ,  Yuanmou LI ,  Jin LI

IPC: G06F13/40 ,  H04B10/40 ,  G06E1/02

Abstract: The present disclosure relates to the field of optical communications. A board is disclosed. The board includes a level adjustment circuit, a detection apparatus, and a control apparatus. The detection apparatus is configured to: when the detection apparatus is connected to an optical module, receive an indication signal output by an upstream optical signal detection pin; continuously detect a received first level signal and the received indication signal. If there is a second level signal, opposite to the first level signal, the detection apparatus notifies the control apparatus that the optical module is inserted. If there is no second level signal in the signal received within the preset duration, the detection apparatus notifies the control apparatus that the optical module is absent. This makes the optical module less dependent on the in-position pin, and decreases a quantity of pins of the optical module.