Patent · US Active

Method and apparatus for monitoring a redundant (standby) transmitter in a radio communications system

US7773661B2 · kind B2 · utility

0Cited by

13References

27Claims

0Family size

Assignee

ERICSSON AB · SE

Inventors

Heike Hofmann · Backnang, DE
Thomas Alberty · Backnang, DE
Khaled Fazel · Épinay-sur-Orge, FR
Volker Hespelt · Backnang, DE

Key dates

Filing date	Jun 27, 2002
Grant date	Aug 10, 2010
Priority date	—
Expiry date	Nov 19, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04B17/18
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method for monitoring a redundant (passive) transmitter, being, for example, part of a base station of a point-to-multipoint radio communications system transmits, during normal operation, a spread-spectrum signal over the redundant transmitter, the spread-spectrum signal being of low spectral power in comparison with data signals being transmitted by the active transmitter of the base station. One or more receivers are associated, for example, with terminal stations in communication with the base station and detect the presence of the spread-spectrum signal. If the spread-spectrum signal is not found to be present, the receivers provide an indication of this, and from this indication, a decision is made as to the integrity of the redundant transmitter.

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