Multi-stage transmit power control scheme for access point

US8958838B2 · kind B2 · utility

Assignee

• QUALCOMM Incorporated · US

Inventors

• Chirag Sureshbhai Patel · San Diego, US
• Mehmet Yavuz · San Diego, US
• Leonard Henry Grokop · San Diego, US
• Vinay Chande · San Diego, US
• Sanjiv Nanda · Ramona, US
• Farhad Meshkati · San Diego, US
• Sumeeth Nagaraja · Los Altos, US

Key dates

• Filing date: Feb 10, 2011
• Grant date: Feb 17, 2015
• Expiry date: Jun 10, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W84/045
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Transmit power for an access point is controlled based on information received by the access point. For example, an access point may employ one or more algorithms that use messages received from nearby access terminals to maintain an acceptable tradeoff between providing an adequate coverage area for access point transmissions and mitigating interference that these transmissions cause at nearby access terminals. Here, the access point may employ a network listen-based algorithm upon initialization of the access terminal to provide preliminary transmit power control until sufficient information is collected for another transmit power control algorithm (e.g., an access terminal assisted algorithm). Also, the access terminal may employ an active access terminal protection scheme to mitigate interference the access point may otherwise cause to a nearby access terminal that is in active communication with another access point.