Method and system which uses sound wave based communication to generate a secure wireless link between a handset and base station

US6507734B1 · kind B1 · utility

Assignee

• Skyworks Solutions, Inc. · US

Inventors

• Doug Berger · Red Bluff, US
• Norman Beamish · Munich, DE
• Xiaohua Joseph Xie · Irvine, US

Key dates

• Filing date: Dec 18, 1998
• Grant date: Jan 14, 2003
• Expiry date: Dec 18, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04M1/66
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Methods and apparatus for establishing secure wireless links between a handset and a base station in cordless telephone systems are described. A method of generating a secure wireless link between a handset and a base station includes initiating a linking procedure, generating a security code, trasmitting the security code from a sound transmitter, receiving the security code at a sound receiver and then establishing a radio frequency link between the handset and the base station utilizing the security code. A cordless telephone system capable of generating a secure wireless link includes both a handset and a base station. The handset includes a control circuit, an rf transmitter and an rf receiver coupled to the control circuit along with a sound receiver also coupled to the control circuit. The base station includes a control circuit, a code generation circuit coupled to the control circuit, a sound transmitter coupled to the control circuit for transmitting a code generated by the code generation circuit, and an rf transmitter and an rf receiver coupled to the control circuit.