Method for inter operation of a cellular communication system and a trunking communication system
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United States of America Patent
Stats
-
Jan 12, 1993
Grant Date -
N/A
app pub date -
Nov 5, 1990
filing date -
Nov 5, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a geographic region that contains a trunking communication system and a cellular communication system, where the coverage area of each system substantially overlaps, a method that enables a communication unit to operate in either system is disclosed. Normally in accordance with the present invention, a communication unit will monitor a control channel of the cellular communication system. When the communication unit is needed within the trunking communication system, a communication channel controller of the trunking communication system will place a telephone call to the communication unit via the cellular communication system. The telephone call indicates to the communication unit that it should transfer its affiliation from the cellular communication system to the trunking communication system. Once the communication unit has transferred its affiliation to the trunking communication system, it operates as a trunking communication unit.
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