초록 ▼

A method for selecting a signal used in a cellular radio system having base stations and a vocoder encoding a signal. The vocoder is operationally connected to the base stations via transmission paths of different lengths. The base stations receive a signal encoded by the vocoder in the forward dire

A method for selecting a signal used in a cellular radio system having base stations and a vocoder encoding a signal. The vocoder is operationally connected to the base stations via transmission paths of different lengths. The base stations receive a signal encoded by the vocoder in the forward direction and transmit a signal to the vocoder in the reverse direction. The cellular radio system includes selectors that are separate from the base stations and that are arranged to select at least one signal to be transmitted to the vocoder from the signals received by the base stations in the reverse direction. The selectors are arranged to distribute to the base stations the signal arriving from the vocoder in the forward direction.

대표청구항 ▼

[ I claim:] [1.] A method for selecting a signal in a cellular radio system which includes a plurality of base stations, a vocoder for encoding signals, and transmission paths of different lengths connecting said vocoder with respective ones of said base stations, so that said base stations are arra

[ I claim:] [1.] A method for selecting a signal in a cellular radio system which includes a plurality of base stations, a vocoder for encoding signals, and transmission paths of different lengths connecting said vocoder with respective ones of said base stations, so that said base stations are arranged to receive a respective signal in a forward direction and to transmit a respective signal in a reverse direction, said method comprising:providing at least one selector, each said selector being located at a location which is geographically separated from said vocoder;selecting by said at least one selector at least one reverse direction signal for transmission to said vocoder from signals arriving via respective ones of said transmission paths in said reverse direction;distributing by said at least one selector a forward direction signal from said vocoder via respective ones of transmission said paths, in said forward direction, to respective ones of said base stations; andconcatenating said base stations such that said transmission paths extend from base station to base station, and said forward direction signal propagates from base station to base station as one signal,wherein said selecting includes measuring and comparing a quality of said at least one reverse direction signal, and transmitting to said vocoder, a signal, from among said at least one reverse direction signal, having a highest quality.