公开(公告)号：US09992789B1

公开(公告)日：2018-06-05

申请号：US14975869

申请日：2015-12-21

Applicant: MEDIATEK INC.

Inventor： Ying-You Lin ,  Yu-Ju Lee ,  Chih-Kun Chang ,  Chih-Wei Kang ,  Hsi-Chang Yang ,  Pu-Hsuan Lin

IPC: H04L12/26 ,  H04W72/12 ,  H04L25/02 ,  H04W4/08 ,  H04L1/00

CPC classification number: H04L1/0071 ,  H04L5/00 ,  H04L25/0224 ,  H04W4/08

Abstract: A sounding method utilized for a wireless communication system is disclosed. The sounding method comprises classifying a plurality of stations of the wireless communication system into a plurality of groups, and determining a plurality of initial sounding instants and a plurality of sounding periods corresponding to the plurality of groups; and performing sounding to at least one or all of the plurality of groups in a group by group fashion according to the plurality of initial sounding instants and the plurality of sounding periods.

公开(公告)号：US11463282B2

公开(公告)日：2022-10-04

申请号：US17215742

申请日：2021-03-29

Applicant: MEDIATEK INC.

Inventor： Hao-Chih Yu ,  Pu-Hsuan Lin ,  Yu-Ting Su

IPC: H04B7/0452 ,  H04L25/02 ,  H04L5/00 ,  H04L1/16 ,  H04W72/04

Abstract: A method for sounding-interval adaptation using link quality for use in an apparatus is provided. The apparatus includes a sounding transceiver. The method includes the following steps: periodically transmitting a sounding packet to a beamformee through a downlink channel from the apparatus to the beamformee using a first sounding interval; in response to the sound transceiver successfully receiving a report packet from the beamformee to respond to the sounding packet, obtaining a current first channel profile from the report packet, and calculating a first LQ (link quality) value of the beamformee using the current first channel profile and a previous first channel profile; searching an LQ-mapping table using the first LQ value to obtain a second sounding interval; and adaptively adjusting the first sounding interval using the second sounding interval in response to a comparison result of the current first channel profile and the previous first channel profile.

公开(公告)号：US20230336230A1

公开(公告)日：2023-10-19

申请号：US18120996

申请日：2023-03-13

Applicant: MEDIATEK INC.

Inventor： Chun-Ting Lin ,  Pu-Hsuan Lin ,  Tsung-Hsuan Wu ,  Hung-Tao Hsieh ,  Yi-Cheng Huang ,  Li-Tien Chang

IPC: H04B7/06

CPC classification number: H04B7/0634 ,  H04B7/0617 ,  H04B7/0658

Abstract: A method for performing beamforming sounding feedback in a system-parameter-aware manner and associated apparatus are provided. The method applicable to a wireless transceiver device within a wireless communications system may include: checking a plurality of system parameters of the wireless communications system to generate a plurality of checking results of the plurality of system parameters, respectively, wherein any checking result among the plurality of checking results indicates a current value of a corresponding system parameter among the plurality of system parameters; modifying a first beamforming feedback matrix according to the plurality of checking results to generate a second beamforming feedback matrix; and sending beamforming sounding feedback information carrying the second beamforming feedback matrix to another device within the wireless communications system, for further processing of the other device.

公开(公告)号：US11817974B2

公开(公告)日：2023-11-14

申请号：US17820282

申请日：2022-08-17

Applicant: MEDIATEK INC.

Inventor： Hao-Chih Yu ,  Pu-Hsuan Lin ,  Yu-Ting Su

IPC: H04L25/02 ,  H04L5/00 ,  H04L1/1607 ,  H04W72/044 ,  H04W72/23 ,  H04B7/0452

CPC classification number: H04L25/0228 ,  H04L1/1607 ,  H04L5/0048 ,  H04W72/046 ,  H04W72/23 ,  H04B7/0452

Abstract: A method for sounding-interval adaptation using link quality for use in an apparatus is provided. The apparatus includes a sounding transceiver. The method includes the following steps: periodically transmitting a sounding packet to a beamformee through a downlink channel from the apparatus to the beamformee according to a first sounding interval; in response to the sounding transceiver receiving a data packet or a report packet from the beamformee, obtaining a current first channel profile from the received data packet or the received report packet; and adaptively adjusting the first sounding interval according to a first mobility indicator which is calculated according to the current first channel profile and the previous first channel profile.

公开(公告)号：US11265049B2

公开(公告)日：2022-03-01

申请号：US16583180

申请日：2019-09-25

Applicant: MEDIATEK INC.

Inventor： Hsuan-Yu Liu ,  Hung-Tao Hsieh ,  Tung-Sheng Yang ,  Pu-Hsuan Lin ,  Wen-Hsien Chiu

IPC: H04B7/0456 ,  H04L5/00 ,  H04B7/0452 ,  H04W84/12

Abstract: A wireless communications method includes: obtaining a plurality of stream inputs, wherein the stream inputs include a first stream input complying with a first packet format and a second stream input complying with a second packet format, and the second packet format is different from the first packet format; applying pre-coding to the stream inputs to generate a plurality of pre-coded stream outputs, respectively; and performing wireless transmission upon the pre-coded stream outputs, wherein downlink Multi-User Multiple-Input Multiple-Output (MU-MIMO) transmission is involved in the wireless transmission of the pre-coded stream outputs.