Group location and route sharing system for communication units in a trunked communication system

A method comprising:

• subscribing, by a group comprising a plurality of talkgroup members engaged in a group dispatch voice call, to a group location sharing service, yielding a corresponding plurality of subscriptions, the subscriptions being required to resolve a location of the event;
• determining respective service levels associated with the subscriptions;
• and
• exchanging periodic location information between the plurality of talkgroup members based on the respective service levels.

In a communication system including a plurality of communication units distributed among a plurality of locations and engaged in a group dispatch voice call, the communication units being eligible for movement causing changes in the plurality of locations, a method comprising the steps of:

• sending, from a first communication unit of the plurality of communication units to one or more receiving communication units of the plurality of communication units, a message initiating a group location sharing service, yielding a subscription for the event, the subscription being required to resolve a location of the event;
• subscribing, by one or more of the receiving communication units, to the group location sharing service, thereby forming a group of participating units including the first communication unit and the one or more of the receiving communication units;
• and
• receiving, by a first plurality of the participating units, responsive to the step of subscribing, periodic location update information associated with a second plurality of the participating units.