Physical and MAC adaptation for interference mitigation with cognitive radio

US8301081B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Bernard Aboba · Bellevue, US
• Paramvir Bahl · Sammamish, US
• Gopala Sri Hari Narlanka · Bellevue, US
• Jitendra D. Padhye · Redmond, US
• Bozidar Radunovic · Cambridge, GB
• Ramachandran Ramjee · Summit, US
• Kun Tan · Beijing, CN
• Miguel Oom Temudo de Castro · Cambridge, GB

Key dates

• Filing date: Nov 13, 2007
• Grant date: Oct 30, 2012
• Expiry date: Apr 4, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B17/345
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A communication device cognitively monitors interference signals across a communication band so that adaptations for physical and medium access control (MAC) of data packet transmissions are appropriate for a particular interference signal. Characteristics of an interference signal of interest (e.g., bandwidth, power and/or duration relative to an average data packet transmitted over a communication channel of the communication device) are sensed for an appropriate adaptation (e.g., forward error correction, modulation technique, back off, request to send/clear to send protocol, etc.). Patterns for known types of interference sources can be compared so that when recognized an associated adaptation can be used.