Appeal No. 2006-1882
Application No. 10/431,617
This saves time and battery power in the mobile unit. Additionally, the present invention
can be implemented in a communication system with a relatively simple software
modification and no additional hardware, therefore limiting any cost penalty.
Appellants’ specification at page 3, lines 10-17.
Claim 1 is representative of the claimed invention and is reproduced as follows:
1. A method for a radiotelephone to search for higher priority public land mobile
networks, each network having a plurality of cells for providing radiotelephone
service to a radiotelephone within a corresponding geographic area, each cell
having a radio communication coverage area established by fixed site base
stations, and each base station operable to send messages to radiotelephones,
the method comprising the steps of:
camping the radiotelephone on a cell of a visited public land mobile network;
uniquely identifying the cell;
searching for public land mobile networks with a higher priority than the visited
public land mobile network; and
storing a history of those frequencies found during the scanning step that are not
of a higher priority public land mobile network, the history being associated with
the uniquely identified cell.
References
The references relied on by the Examiner are as follows:
Raffel 6,223,042 April 24, 2001
2
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