Train radio telephone system using home location register (HLR)

Details Train radio telephone system using home location register (HLR) Train radio telephone system using home location register (HLR)

1996-03-28

1999-08-10

Eisenzopf, Reinhard J.

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

455422, 455443, 455525, 455526, H04B 726

Patent

active

059373504

ABSTRACT:
A train radio system with a simple network structure that is suitable for a safe radio transmission. The train radio system comprises radio stations (R), which are arranged along a route, and a mobile station (MS) which is mounted in a vehicle moving along the route, and comprises a transceiver (TRX) and a data bank (HLR) that is connected thereto, into which identification codes (IDn, IDn+1) for the radio stations (R) can be entered. A signalling channel (ACH) is provided, through which each radio station (R) transmits its identification code to the mobile station to establish the radio link for checking into the data bank (HLR). In this way the mobile station (MS) forms a single traveling radio cell to provide radio to those radio stations (R) that are located inside this radio cell. The infrastructure, which essentially comprises the radio stations, can be realized simply and requires no costly network structure. Furthermore, two and more radio stations (R) can simultaneously check into the traveling radio cell, which makes a safe radio transmission possible.

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patent: 5548818 (1996-08-01), Sawyer et al.
patent: 5548835 (1996-08-01), Sasaki
patent: 5586338 (1996-12-01), Lynch et al.

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