Mediatek Corporation

Pu-Hsuan Lin

Hao-Chih Yu

Yu-Ting Su

Hung-Tao Hsieh

Ying-You Lin

Hsuan-Yu Liu

Yu-Ju Lee

Chih-Wei Kang

Chih-Kun Chang

Wen-Hsien Chiu

Hsi-Chang Yang

Tung-Sheng Yang

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.

Sounding-interval adaptation using link quality

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.

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.

Wireless communications method for transmitting pre-coded stream outputs that are generated from applying pre-coding to stream inputs with different packet formats and associated wireless communications apparatus

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.

Sounding method and wireless communication system

Growing community of inventors

Hsinchu, Taiwan

Pu-Hsuan Lin