Network selection in a mobile telecommunications system
First Claim
1. A mobile station for a mobile telecommunications system, which is operable in different networks, and having a preferred network for operation, comprising:
- a manually operable device for a user to select an individual one of said different networks, and a controller to cause the mobile station to search for said preferred network, regardless of whether the user has manually selected another one of the networks for operation.
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Accused Products
Abstract
A mobile station such as a telephone handset (1) for a mobile radio telecommunications system, is operable in different, user selectable configurations for which radio transmissions are made with different frequencies or signal formats so that the user can roam from a home network (PLMN A) to a another network (PLMN B) which operates in a different configuration to the HPLMN. The handset (1) includes a controller (8) to cause a search to be made for transmissions corresponding to a plurality of the different configurations when a configuration for a roamed network has been selected by the user so as to enable the handset to find the HPLMN when returning to the network coverage area of the HPLMN.
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Citations
30 Claims
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1. A mobile station for a mobile telecommunications system, which is operable in different networks, and having a preferred network for operation, comprising:
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a manually operable device for a user to select an individual one of said different networks, and a controller to cause the mobile station to search for said preferred network, regardless of whether the user has manually selected another one of the networks for operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30)
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18. A method of operating a mobile station for a mobile telecommunications system, which is operable in different networks and having a preferred network for operation and a manual control for permitting network selection, comprising causing the mobile station to search for the preferred network irrespective of whether another of the networks has been manually selected for operation.
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26. A memory device for use in a mobile station for a telecommunications system, which is operable in different networks and having a preferred network for operation, the memory device including data corresponding to networks to be searched and an indication of the preferred network so that a search can be carried out for the preferred network irrespective of the network manually selected by the user.
Specification