Mobile station and method of use in radio communications

Details Mobile station and method of use in radio communications Mobile station and method of use in radio communications

2006-07-25

2006-07-25

Urban, Edward F. (Department: 2684)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S519000

Reexamination Certificate

active

07082315

ABSTRACT:
A method for setting up a group call within a dispatch radio communication system is disclosed. Additional stations which are not programmed to respond to a transmitted group identification code (GIC) are enabled to join the call. The method comprises steps carried out by a service provider of (a) providing first and second additional fields in a set-up message, the first additional field carrying a Group Call Access Permission (GCAP) value and the second additional field carrying a Help Request Level (HRL) value, (b) enabling a call initiator to select a GCAP value, according to a range of stations the call initiator wishes to reach, and a HRL value, according to an assigned call priority, for transmission alongside the GIC in the step (a) fields, and (c) enabling any station that receives a set-up message to determine whether to join the call based on the GCAP and HRL values.

REFERENCES:
patent: 6240069 (2001-05-01), Alperovich et al.
patent: 6477150 (2002-11-01), Maggenti et al.
patent: 2368493 (2002-05-01), None

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