Error detection/correction and fault detection/recovery – Pulse or data error handling – Error count or rate
Patent
1998-08-07
2000-06-06
Chung, Phung M.
Error detection/correction and fault detection/recovery
Pulse or data error handling
Error count or rate
714708, G06F 1100
Patent
active
060732571
ABSTRACT:
A system for determining when a radio telecommunications network should switch between a first grade of service and a second grade of service based upon a highly accurate and reliable estimate of the bit error rate (BER). The system estimates the BER on an uplink and a downlink on a user channel, and determines whether the BER on the uplink and the downlink on the user channel are below a first set of thresholds. The system then measures the residual BER (RBER) and the frame erasure rate (FER) on the voice channel uplink, and determines whether the downlink BER, the uplink RBER, and the uplink FER are lower than a second set of thresholds. If lower, the system sends and receives a data message on a Fast Associated Control Channel (FACCH). The system obtains a highly accurate estimate of the BER on a downlink on the FACCH channel, and reports the downlink BER in a message on the FACCH channel uplink. The system then estimates the BER on the FACCH channel uplink. Finally, the system switches the radio telecommunications network from the first grade of service to the second grade of service in response to determining that the uplink and downlink BER on the FACCH channel are below a third set of thresholds.
REFERENCES:
patent: 5406562 (1995-04-01), Roney, IV
patent: 5418789 (1995-05-01), Gerbach et al.
patent: 5453997 (1995-09-01), Roney, IV
patent: 5991901 (1999-11-01), Mulford et al.
Labonte Sylvain
Turcotte Eric
Chung Phung M.
Telefonaktiebolaget LM Ericsson (publ)
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