Telecommunications – Carrier wave repeater or relay system – Failure compensation
Patent
1990-06-05
1992-12-29
Barron, Jr., Gilberto
Telecommunications
Carrier wave repeater or relay system
Failure compensation
455 9, 455 16, 455 341, 455 531, 379 9, 379 63, 379269, 379279, 370 583, H04B 174, H04M 322
Patent
active
051758660
ABSTRACT:
A site architecture for a trunked radio frequency communications system provides better fault tolerance capabilities than are available from architectures including redundant hardware. During normal system operations, a primary site controller performs most or all system control functions while signal processing functions are performed in a distributed manner by trunking cards associated with individual repeater channel receivers and transmitters. In the event the site controller fails, the trunking cards also begin performing trunking and other control functions. The trunking cards cease attempting to communicate with the failed site controller, and begin communicating directly with one another via a high speed backup serial link. Through the distributed processing routines performed by the various trunking cards and interaction between the trunking cards over the backup serial link, trunking and other capabilities are maintained even though the primary site controller has failed (although advanced features such as call logging and the like are lost). Because trunking capability is maintained, failure of the primary site controller has little or no effect on ongoing communications and is virtually transparent to mobile unit operators.
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Childress Jeffrey S.
Hughes, III Houston H.
Barron Jr. Gilberto
Ericcson GE Mobile Communications Inc.
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