Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-10-11
2005-10-11
Vuong, Quochien B. (Department: 2685)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S427000
Reexamination Certificate
active
06954642
ABSTRACT:
In a mobile communications system10, a message is sent to a mobile terminal16which transmits an acknowledgement signal if the message is received. If the system10does not detect an acknowledgement signal, it transmits a high margin notification signal to the mobile terminal16to notify the terminal that an attempt was made to send the message. When the mobile terminal16has received a notification signal and subsequently comes within range of lower margin signals from the system, it sends a registration signal to the system. The system may then retransmit the message to the mobile terminal16.
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Bjornstrom Gunnar Arvid
Chambers Charles
Chambers Paul
Inmarsat Ltd.
Vuong Quochien B.
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