Method and base station system for voice transmission via a radi

Details Method and base station system for voice transmission via a radi Method and base station system for voice transmission via a radi

1997-12-17

2000-10-03

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

H04B 138

Patent

active

061285137

ABSTRACT:
In a method for voice transmission via radio interface in a digital radio communication system, at least one signal is transmitted between a mobile station and a base station. At least one characteristic value with respect to the transmission conditions of the radio interface is identified from the signal. The characteristic value or values are compared to a threshold and a voice encoder is selected according to the comparison result, with a voice encoder having a higher data rate being employed given good transmission conditions and a voice encoder having a lower data rate given poor transmission conditions. A base station system operating according to the method is also disclosed.

REFERENCES:
patent: 5490183 (1996-02-01), Nishimura et al.
patent: 5742640 (1998-04-01), Haoui et al.
patent: 5898931 (1999-04-01), I'Anson et al.
"Mobilfunk und Intelligenete Netze," J. Biala (1995), pp. 57-92.
Siemens AG Publication "System Netzubersicht" GSM (TED-NET), A30808-X3232-Y104-1-18 (1995), pp. 65-67.

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