US 2002/0002051 A1Published application

Mobile radio communication apparatus

AssigneeKabushiki Kaisha Toshiba

InventorsIppo Aoki, Akira Ishikura

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Abstract

Disclosed herein is a mobile radio communication apparatus, wherein priority data items representing the priorities of base stations are stored. The SID of the base station seized when the apparatus was turned off last is stored in the apparatus, too. When the apparatus is turned on, it may identify a base station of higher priority than the base station it seized when it was turned off. In this case, the apparatus seizes the base station of higher priority and goes into an idle state. Thus, the apparatus that can seize a base station of high priority even if it seized a base station of low priority when it was turned off last and if it now exits in an area formed by the overlapping of the two service areas in which the low-priority base station and the high-priority base station operate, respectively.

Claims13

Dependent claims

A mobile radio communication apparatus for use in a mobile radio communication system which includes base stations, mobile radio communication apparatuses to be connected to the base stations over radio channels, and in which each of the base stations broadcasts a system ID number for identifying the base station, said apparatus comprising:

first memory means for storing system ID numbers and priority data items, each item associated with each of the system ID numbers and representing priority assigned to each base station, so as to be used to seize one base station;
seizing means for receiving the broadcast system ID number in accordance with the priority data item stored in said first memory means, for seizing the base station having the system ID number received, and for setting the apparatus in an idle state;
second memory means for storing the system ID number of the seized base station when a user operates the apparatus and inputs a turn-off instruction for turning off the apparatus, while the apparatus remaining in the idle state;
and
control means for turning off the apparatus in response to the turn-off instruction, for determining whether the apparatus receives a system ID number of higher priority than the system ID number stored in said second memory means, in response to the turn-on instruction and by referring to the contents of said first memory means, and for seizing the base station having the system ID number of higher priority and setting the apparatus in the idle state when the apparatus receives the system ID number of higher priority.

2 more elements

A mobile radio communication apparatus for use in a mobile radio communication system which includes base stations, mobile radio communication apparatuses to be connected to the base stations over radio channels, and in which each of the base stations broadcasts a system ID numbers for identifying the base station, said apparatus comprising:

first memory means for storing system ID numbers and priority data items, each item associated with each of the system ID numbers and representing priority assigned to each base station, so as to be used to seize one base station;
first seizing means for receiving the broadcast system ID number in accordance with the priority data item stored in said first memory means, for seizing the base station having the system ID number received, and for setting the apparatus in an idle state;
second memory means for storing the system ID number of the seized base station when a user operates the apparatus and inputs a turn-off instruction for turning off the apparatus, while the apparatus remaining in the idle state;
second seizing means for seizing the base station having the system ID number stored in said second memory means and setting the apparatus in an idle state when the apparatus is turned on;
and
control means for determining whether the apparatus receives a system ID number of higher priority than the system ID number of the base station seized by said second seizing means, by referring to the contents of said first memory means, and for seizing the base station having the system ID number of higher priority and setting the apparatus in the idle state when the apparatus receives the system ID number of higher priority.

3 more elements

first memory means for storing system ID numbers, priority data items, each item associated with each of the system ID numbers and representing priority assigned to each base station, so as to be used to seize one base station;
seizing means for receiving the broadcast system ID number in accordance with the priority data item stored in said first memory means, for seizing the base station having the system ID number received, and for setting the apparatus in an idle state;
second memory means for storing the system ID number of the seized base station if the system ID number of the seized base station is included in said first memory means in accordance with turn-off operation during the idle state;
and
control means for turning off the apparatus in response to the turn-off instruction and for seizing the base station having the system ID number stored in said second memory means and setting the apparatus in the idle state when the user operates the apparatus and inputs a turn-on instruction for turning on the apparatus.

2 more elements

Dependencies are inferred from the claim text.