Communication terminal and communication method for transmitting a proximity indication message containing a selected frequency when approximating an access-restricted cell
First Claim
1. A communication terminal which transmits a proximity indication message to a first base station that provides a currently connected cell when approximating to an access-restricted cell provided by a second base station that supports a plurality of access-restricted cells at different frequencies, the communication terminal comprising one or more integrated circuits configured to:
- acquire notification information containing information related to all frequencies allocated to the access-restricted cells supported by the second base station;
store frequency information for a plurality of access-restricted cells that were accessible in the past;
select one arbitrary frequency from the stored frequency information when detecting that the communication terminal approximates to an access-restricted cell from the plurality of the access-restricted cells that were accessible in the past, based on the acquired notification information and the stored frequency information; and
transmit the proximity indication message containing the selected frequency, to the first base station.
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0 Petitions
Accused Products
Abstract
A communication terminal includes: a notification information acquiring section which acquires notification information containing information related to all frequencies allocated to cells provided by a base station that provides access-restricted cells; a frequency information storing section which stores cell information containing information contained in the notification information; a frequency selecting section which selects one arbitrary frequency from a plurality of frequencies provided by an access-restricted base station to be accessible in a past when detecting that the communication terminal approximates to a cell of the access-restricted base station to be accessible in the past, based on the notification information and the cell information; and a transmitting section which transmits the proximity indication message containing the frequency selected by the frequency selecting section, to the base station that provides the currently connected cell.
6 Citations
7 Claims
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1. A communication terminal which transmits a proximity indication message to a first base station that provides a currently connected cell when approximating to an access-restricted cell provided by a second base station that supports a plurality of access-restricted cells at different frequencies, the communication terminal comprising one or more integrated circuits configured to:
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acquire notification information containing information related to all frequencies allocated to the access-restricted cells supported by the second base station; store frequency information for a plurality of access-restricted cells that were accessible in the past; select one arbitrary frequency from the stored frequency information when detecting that the communication terminal approximates to an access-restricted cell from the plurality of the access-restricted cells that were accessible in the past, based on the acquired notification information and the stored frequency information; and transmit the proximity indication message containing the selected frequency, to the first base station. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication method executed by a communication terminal which transmits a proximity indication message to a first base station that provides a currently connected cell when approximating to an access-restricted cell provided by a second base station that supports a plurality of access-restricted cells at different frequencies, the communication method comprising:
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a notification information acquiring step of acquiring notification information containing information related to all frequencies allocated to the plurality of access-restricted cells supported by the second base station; a frequency information storing step of storing frequency information for a plurality of access-restricted cells that were accessible in the past; a frequency selecting step of selecting one arbitrary frequency from a plurality of frequencies stored during the frequency information storing step when detecting that the communication terminal approximates to an access-restricted cell from the plurality of the access-restricted cells that were accessible in the past, based on the notification information acquired in the notification information acquiring step and the frequency information stored in the frequency information storing step; and a transmitting step of transmitting the proximity indication message containing the frequency selected in the frequency selecting step, to the first base station.
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Specification