Patent · US Expired

Accessing of transmission channels of a communication system

US5088094A · kind A · utility

17Cited by

8References

21Claims

0Family size

Assignee

Philips Kommunikations Industrie Aktiengesellschaft · DE

Inventors

Christoph Grauel · Feucht, DE
Werner Schmidt · Chemnitz, DE

Key dates

Filing date	Aug 12, 1982
Grant date	Feb 11, 1992
Priority date	—
Expiry date	Aug 12, 2002

Classification

Technology area (CPC H)Electricity
CPC primaryH04W74/0866
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a communications system with a plurality of subscriber stations independent from each other, where each subscriber station can access according to a multiple access method a joint duplex transmission channel, the probability becomes very large for simultaneous attempts to get access and thereby the probability of signal destruction becomes particularly large. In order to avoid a blockage of the service channel each subscriber station occupies the duplex transmission channel with a short access signal for initiating a transmission starting with the subscriber station. The subscriber station characterized by the position in time and/or the information contents of the signalling short designation call is thereupon invited by the central base station to provide complete identification information.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.