Mobile station and method of use in radio communications
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United States of America Patent
Stats
-
Jul 25, 2006
Grant Date -
May 27, 2004
app pub date -
Oct 18, 2001
filing date -
Oct 23, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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