Multiplex communications – Fault recovery
Reexamination Certificate
2011-06-28
2011-06-28
Nguyen, David Q (Department: 2617)
Multiplex communications
Fault recovery
C370S224000, C455S410000, C455S433000, C455S435100
Reexamination Certificate
active
07969864
ABSTRACT:
An Unlicensed Mobile Access Network Controller (UNC) and method for providing an early indication of service failure to a mobile station registered with the UNC. When the UNC detects a network failure that prevents service to the mobile station, the UNC prohibits new registrations by other mobile stations, starts a timer, and monitors the network failure to determine if the failure clears. If the failure clears before the timer expires, new registrations are accepted from other mobile stations. However, if the timer expires before the failure clears, the UNC continues to prohibit new registrations from other mobile stations, and deregisters the mobile station when a network Keep Alive timer expires for the mobile station. When a plurality of mobile stations are registered with the UNC, the UNC deregisters the plurality of mobile stations one at a time as the network Keep Alive timer expires for each mobile station.
REFERENCES:
patent: 2004/0071090 (2004-04-01), Corson et al.
patent: 2008/0076386 (2008-03-01), Khetawat et al.
patent: 2008/0115009 (2008-05-01), Silfverberg et al.
patent: 2008/0293407 (2008-11-01), Cormier et al.
Nylander Tomas
Vikberg Jari Tapio
Nguyen David Q
Telefonaktiebolaget L M Ericsson (publ)
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