Switching equipment and method for radiotelephone system of the local or private branch exchange type

US5666398A · kind A · utility

Assignee

• Jenoptik Communications GmbH · DE

Inventors

• Reinhard Schiffel · Berlin, DE
• Klaus Jackel · Berlin, DE
• Bruno Stadler · Berlin, DE
• Holger Vogel · Berlin, DE
• Andreas Hachenberger · Berlin, DE
• Detlef Herold · Berlin, DE

Key dates

• Filing date: Jul 19, 1994
• Grant date: Sep 9, 1997
• Expiry date: Jul 19, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W84/14
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A radio telephone system is disclosed to satisfy in the short term basic telecommunication needs of areas which are insufficiently or not yet covered. The system has a number of duplex radio channels (transmission channels) substantially smaller than the number of radio telephone subscribers. These transmission channels are connected to the ports of a telecommunications exchange system which is part of the stationary radio station and which ensures both incoming and outgoing traffic with the public telecommunications network and internal exchanges within the system. Signalling, exchange, management, servicing, and special functions of radio operation between the stationary radio station and the subscriber connection device are ensured by a radio switching device which uses one, or if required, several transmission channels used as organization channels and not connected to the ports of the telecommunications exchange system. In the organization channel, a constant time-multiplexed communication is maintained with the subscriber connection device according to a random access process based on a special organization channel protocol. An essential characteristic of the invention is tha…