Method for setting up a group call in a cellular radio system
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United States of America Patent
Stats
-
Nov 7, 1995
Issued Date -
N/A
app pub date -
Sep 6, 1994
filing date -
Aug 29, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a method for setting up a group call in a cellular radio system. The method comprises allocating a traffic channel to the group call and transmitting a group call paging message containing a traffic channel indication via each base station (BS1) whose radio cell (C1) resides in a predetermined operation area of the called group to the mobile radio stations (MS1-MS5) of the group. In order to ensure that all the mobile stations of the group roaming in the area participate in the group call, an additional group call paging message is transmitted via the base stations (BS2) of radio cells (C2) adjacent to said predetermined operation area to mobile radios (MS4, MS5) of the group. The additional group call paging message contains an instruction to switch to the allocated traffic channel of the radio cell (C1) residing in said operation area.
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