Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2001-03-29
2008-05-27
Ly, Nghi H. (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S435100, C455S435200, C455S426100, C455S436000, C455S442000, C455S450000, C455S558000, C370S331000, C370S329000
Reexamination Certificate
active
07379736
ABSTRACT:
The invention relates to methods and systems for selectively controlling network selection in an area covered by at least two mobile communication networks. According to the first method, the area which is to be covered is divided up into zones and a specific code is allocated to each individual zone. Said codes are stored in a storage system and the network is selected on the basis thereof. Alternately, a correlation is made between information on a subscriber identification module (SIM) and signals from a cell broadcast channel which is used to select the network.
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Hochscherff Andreas
Ljungström Patrik
Mohrs Walter
Sänger Georg
Baker & Daniels LLP
Ly Nghi H.
T-Mobile Deutschland GmbH
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