Radio system for a closed user group
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United States of America Patent
Stats
-
Jan 11, 2000
Grant Date -
N/A
app pub date -
Sep 23, 1996
filing date -
Nov 29, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To implement a radio system (PRS) for a closed user group by simple means and at low cost, a device (MONE) is proposed which connects at least one commercially available base station (BTS1, BTS2) to a telecommunication network (PSTN) via standard interfaces (PCM30, Abis). The device comprises a subscriber data base (ID) and means (MM) for checking whether a transmitted subscriber identification (IMSI) authorizes a subscriber to access the radio system (PRS). The device further controls the establishment and release of calls (CC) and performs radio resource management functions (RR). A radiotelephone (MS) authorized to access the radio system (PRS) is connected to the nearest base station (BTS1) at least for the duration of the call.
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