公开(公告)号：US20230072440A1

公开(公告)日：2023-03-09

申请号：US17987393

申请日：2022-11-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinshan WANG ,  Liming FANG ,  Yanbo ZHAO ,  Yanbin SUN ,  Jianfei LIU ,  Yumeng YANG ,  Chao WANG

IPC: H04B1/525 ,  H04B7/015 ,  H04B1/10

Abstract: An echo cancellation method and a transceiver to reduce dependence of a system on an enob of a DAC, and improve performance of echo cancellation. The transceiver includes an echo cancellation apparatus, a transmit link, a receive link, and a hybrid circuit. The transmit link and the receive link are coupled to a transmission line by using the hybrid circuit. The echo cancellation apparatus includes a first signal converter, a slicer, a first subtractor, a second digital-to-analog converter, a second subtractor, and a third subtractor.

公开(公告)号：US20230123378A1

公开(公告)日：2023-04-20

申请号：US18145260

申请日：2022-12-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianfei LIU ,  Jinshan WANG ,  Yanbin SUN

IPC: H04W48/16 ,  H04W28/02 ,  H04W72/51

Abstract: A communication method includes: a first device obtains a communication rate of a second device and obtains asymmetric rate transmission capability information supported by the second device. The first device determines, based on asymmetric rate transmission capability information supported by the first device, the asymmetric rate transmission capability information supported by the second device, a first communication rate of the first device, and the second communication rate, a first asymmetric rate transmission capability supported by both the first device and the second device. The first device determines passband frequency information corresponding to the first asymmetric rate transmission capability; and selects, from a data transmit link, a high-pass filter and/or a low-pass filter corresponding to the passband frequency information to perform filtering processing, and selects, from a data receive link, a high-pass filter and/or a low-pass filter corresponding to the passband frequency information to perform filtering processing.

公开(公告)号：US20230076665A1

公开(公告)日：2023-03-09

申请号：US17986485

申请日：2022-11-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanbo ZHAO ,  Jianfei LIU ,  Jinshan WANG ,  Yanbin SUN ,  Liming FANG

IPC: H04L27/26

Abstract: This application provides a narrowband interference isolation method and a communication apparatus. An example method includes: determining a parameter of a narrowband interference signal; determining a coefficient of a first filter based on the parameter of the narrowband interference signal, wherein the first filter is located at a receive end of a master communication device, and the coefficient of the first filter is for filtering out the narrowband interference signal; and sending the parameter of the narrowband interference signal or the coefficient of the first filter to M slave communication devices using an Ethernet operation, administration, and maintenance (OAM) frame, wherein the master communication device is connected to the M slave communication devices, M≥1, and M is an integer.