Patent · US Active

Downlink orthogonal frequency-division multiplexing (OFDM) beamforming simultaneous transmission

US11324045B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

SONY GROUP CORPORATION · JP

Inventors

Liangxiao Xin · San Jose, US
Mohamed Abouelseoud · San Francisco, US
Qing Xia · Beijing, CN
Kazuyuki Sakoda · Chiba, JP
Hiromasa Uchiyama · Tokyo, JP
Yusuke Tanaka · Gifu, JP
Kosuke AIO · Tokyo, JP
Ryuichi HIRATA · Tokyo, JP
Ken Tanaka · Fuchu, JP
Thomas HANDTE · Stuttgart, DE
Dana Ciochina · Stuttgart, DE

Key dates

Filing date	Jul 31, 2020
Grant date	May 3, 2022
Priority date	—
Expiry date	Oct 6, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH04W80/02
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A WiFi communications mechanism in which simultaneous transmission is negotiated and beamforming communications performed towards at least one station (STA), while nulling is performed towards one or more other access points (APs) to reduce interference. Omni-directional transmissions are utilized in a manner to overcome preamble interferences, which is used in combination with synchronizing symbol intervals to eliminate interference from symbol transitions. The enhanced simultaneous transmission protocol allows two APs to transmit simultaneously without interfering with one another.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.