INTEGRATION OF MULTIPLE CALLS IN A TRUNKED RADIO SYSTEM
Original Publication Date: 2000-May-01
Included in the Prior Art Database: 2002-Sep-17
A mobile communications system generally consists of a plurality of radio base stations interconnected via a land-based wireline network. Such a system can support group communications where the call may be routed to several base station sites so that subscriber units in coverage of those sites can hear the transmissions for that group communication. On occasion, the wireline network fails or has limited resources in which case the group communication is confined to a single base station site or to a limited sub-set of sites within the network. This situation can result in multiple group communications for the same talkgroup taking place simultaneously in two or more of these "islands" where network connectivity is temporarily unavailable. When the network connections are restored, it may be desirable to re-integrate the separate calls for the same group. Similarly when a wide-area group call loses link capacity to higher priority traffic, it may be that the call is broken up into multiple "islands" where the call can continue but without capturing the entire group area.