Method for setting up a group call in a cellular radio system

Details Method for setting up a group call in a cellular radio system Method for setting up a group call in a cellular radio system

1994-09-06

1995-11-07

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

455 541, 455 561, H04Q 738

Patent

active

054653916

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.

REFERENCES:
patent: 4578815 (1986-03-01), Persinotti
patent: 4682367 (1987-07-01), Childress et al.

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