RUTHFUL PRIORITY CALL IN A TRUNKED RADIO SYSTEM
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-20
In a trunking radio system, radio units and other communication equipment contend for the use of a limited number of air traffic channels. Existing techniques ensure that traffic channels are not monopolized by any party for an unlimited period of time. However, any call, except an emergency call initiated when the system does not need to have traf5c channels available, will have to wait until the required channels become available through the completion of other calls. In a busy system, there can be annoying periods whilst waiting for other calls to finish and relinquish their radio trafIic chan- nels before a desired call can be assigned its required channel resources. In an all-voice commu- nications system a user must wait because another user is making use of a channel resource needed for his call. In a mixed voice and data system, a user attempting to initiate a voice call may have to wait for a computer to complete its previously initi- ated data call and relinquish its allocated traffic channels.