Multi-subscriber unit for radio communication system and method

US5703881A · kind A · utility

Assignee

• HUGHES ELECTRONICS LIMITED · US

Inventors

• Stanley Kay · Rockville, US
• Pradeep Kaul · Rockville, US
• Michael Parr · San Diego, US
• Graham M. Avis · San Diego, US
• John Corrigan · Bethesda, US
• Daniel Raymond Wendling · Gaithersburg, US
• Ashok Mehta · Los Gatos, US

Key dates

• Filing date: Mar 9, 1993
• Grant date: Dec 30, 1997
• Expiry date: Mar 9, 2013

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04J3/172
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A multisubscriber unit is disclosed for use of in a digital cellular communication system to communicate with a base transceiver station and eventually to switched telephone network. The multisubscriber unit connects to a plurality of individual subscriber telephones. It includes a plurality of upconverters, modulators, downconverters, demodulators speech compressors, speech decompressors, and voice activity detectors that are assigned to a subscriber telephone upon detection of an off hook signal from the telephone. Preferably, upon the detection of data to be transmitted, to channel allocation is requested from a pool of time division multiple access channels in a digital speech interpolation pool.