Multi-band mobile telecommunications station
AssigneeNEC Corporation
InventorsMark Grayson, Christophe M. J. Jouin
Life of this patent
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Abstract
A mobile telecommunications station for use in a multiple network environment is disclosed. The mobile telecommunications station includes a radio receiver capable of operating in a plurality of different frequency bands used by different networks. The mobile telecommunications station further includes a network preference data storage for storing data which identifies a level of priority for each network. At least one of the networks is a preferred network, and a search controller determines the search frequency at which each network is searched in accordance with the preference data.
Claims14
A mobile telecommunications station, comprising:
- a radio receiving means for operating in a plurality of different frequency bands used by different networks;
- coverage zone determination means for establishing a time-based search interval;
- network preference data storage means for storing data which identifies a level of priority for each network, wherein at least one of the networks is a preferred network;
- and
- search control means for determining the number of times each network is to be searched in a predetermined interval, in accordance with the preference data received from said network preference data storage means,
- wherein the search control means varies a search strategy for the networks based on the networks found in a previous search.
A mobile telecommunications station, comprising:
- a radio receiver/transmitter which operates in a plurality of frequency bands used by different networks;
- an interface which receives an input from said radio receiver and performs frequency translation;
- a digital signal processor which receives an input from said interface to implement speech coding/decoding by synchronizing its operation to a timing and frequency of the input from said interface;
- a memory which stores network preference data;
- and
- a central processing unit which receives inputs from said digital signal processor and said memory to execute time-based search intervals for detecting one of said different networks from the network preference data which is located within a range of said mobile telecommunications station, and commanding said digital signal processor to scan a plurality of frequency bands until a signal is detected which exceeds a predetermined threshold value,
- wherein the central processing unit varies a search strategy for the networks based on the networks found in a previous search.
Dependencies are inferred from the claim text.