US 2001/0041538 A1Published application

Method and system for monitoring a radio transmission link

AssigneeLucent Technologies Inc.

InventorsKai Schmitt, Georg Fischer

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Abstract

A radio transmission link between at least one radio transmission device is monitored and at least one radio reception device. Radio transmission links between at least one transmission antenna and one reception antenna are monitored for faults. At least one radio reception device is tuned to the transmission frequency of at least one radio transmission device. The at least one radio transmission device then transmits, during a predetermined time period, a predetermined test signal which is recorded, evaluated and stored as a reference signal in the at least one radio reception device during a predetermined time period. At the start of a test phase, at least one radio transmission device transmits the predetermined test signal. The test signal is compared with the stored reference signal, and an error signal is produced if the comparison result shows that the test signal has changed beyond a predetermined extent with respect to the stored reference signal.

Claims5

Dependent claims

Method for monitoring a radio transmission link between at least one radio transmission device and at least one radio reception device, comprising the steps of:

a) tuning the at least one radio reception device to the transmission frequency of the at least one radio transmission device;
b) using the at least one radio transmission device to transmit a predetermined test signal during a predetermined time period;
c) recording and evaluating the test signal transmitted by the at least one radio transmission device in the at least one radio reception device during a predetermined time period;
d) storing the evaluated test signal as a reference signal in the at least one radio reception device;
e) transmitting the predetermined test signal to at least one radio transmission device during a test phase of predetermined duration;
f) comparing the test signal emitted by the at least one radio transmission device with the stored reference signal in the at least one radio reception device during the test phase;
and
g) producing an error signal if the comparing step shows that the test signal has changed beyond a predetermined extent with respect to the stored reference signal.

5 more elements

Dependencies are inferred from the claim text.