Strahlenwechsel-Anzeige zur Kanalschätzungsverbesserung

Details

Veröffentlichungs-Nr.

EP3151445

Aktenzeichen

EP16192182

Anmeldetag

4. Oktober 2016

Veröffentlichung

2. September 2020

Erteilung

2. September 2020

Rechtsraum

EP

IPC

H04B7/06H04L25/02

Abstract

A method of transmitting and receiving a HE PPDU and perform channel estimation enhancement is proposed. The HE PPDU comprises legacy preamble, HE-STF, HE-LTF, and data. A beam-change indication indicates if the pre-multiplied beamforming Q-matrix is changed from legacy preamble to H-SFT, HE-LTF, and data portion. A value of 1 indicates that Q matrix is changed. A value of 0 indicates that Q matrix is unchanged and receiver should be safe to combine L-LTF and HE-LTF. The beam-change indication can be used to significantly enhance channel estimation at receiver. When there is no beam-change, receiver does not change operation during HE-STF and HE-LTF such that the channel estimations can rely on the combination of L-LTFs, L-SIG, RL-SIG, HE-SIGAs and HE-LTF.

Anmelder

Firma

MediaTek Inc.

Land

🇹🇼 Taiwan

Fachgebiete