Clear channel assessment (CCA) threshold adaptation method

US9807699B2 · kind B2 · utility

Assignee

• InterDigital Patent Holdings, Inc. · FR

Inventors

• Oghenekome Oteri · San Diego, US
• Pengfei Xia · San Diego, US
• Xiaofei Wang · Cedar Grove, US
• Hanqing Lou · Syosset, US
• Monisha Ghosh · Chappaqua, US
• Robert L. Olesen · Huntington, US
• Nirav B. Shah · San Diego, US
• Frank La Sita · Setauket, US

Key dates

• Filing date: Sep 12, 2014
• Grant date: Oct 31, 2017
• Expiry date: Sep 12, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W84/12
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.