Mobile communication terminal and communication control method

• US 20060211444A1
• Filed: 03/01/2006
• Published: 09/21/2006
• Est. Priority Date: 03/01/2005
• Status: Active Grant

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: Casio Hitachi Mobile Communications Company Limited (NEC Corporation)
• Inventors: Koike, Atsushi, Miyata, Katsuya
• Granted Patent: US 7,747,276 B2
• Time in Patent Office: Days
• US Class Current: 455/550.100
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service

Abstract

When the user of the mobile communication terminal produces the originating operation while in the idle state with the wireless system C, the control section acquires the input of the user of the mobile communication terminal via the key input section (step 302) and acquires, through the present position acquisition section, area identification data of an area L where it is placed in the idle state (step 304). The control section makes a reference to the table of connection scores held in the storage section and acquires a connection score p for the system A corresponding to the area L (step 306). Next, the control section judges the start of origination to the system A by using the connection score p (step 308).

Claims

1. A mobile communication terminal capable of using a plurality of wireless systems, comprising:

a storage means for storing area identification data identifying each communication area and remote end selection data respectively corresponding to said area identification data for selecting a remote end wireless system among said plurality of wireless systems;

a present position acquisition means for acquiring present position data; and

a remote end determination means for selecting area identification data from said storage means corresponding to present position data acquired by said present position acquisition means and determining a remote end wireless system referring to said remote end selection data corresponding to said selected area identification data.

2. The mobile communication terminal according to claim 1, wherein said present position data is base station identification data identifying a base station that the mobile communication terminal is placed in the idle state with.

3. The mobile communication terminal according to claim 1, wherein said remote end selection data is updated whenever communications processing is performed to any of said plurality of wireless systems.

4. The mobile communication terminal according to claim 1, wherein said remote end selection data contains reference data used as a reference of whether or not to use a remote end wireless system in each of said plurality of wireless systems.

5. The mobile communication terminal according to claim 4, wherein said reference data is updated by a differing method depending on a wireless system not performing communications processing, a wireless system performing communications processing and succeeding in a connection or a wireless system performing communications processing but failing in a connection.

6. The mobile communication terminal according to claim 5, wherein said reference data is numerical values.

7. The mobile communication terminal according to claim 1, wherein said remote end determination means determines, as a remote end, a wireless system having reference data exceeding a predetermined reference from said remote end selection data containing reference data.

8. The mobile communication terminal according to claim 1, wherein said remote end determination means determines a remote end wireless system using a probability corresponding to reference data from said remote end selection data containing reference data.

9. A mobile communication terminal capable of using a plurality of wireless systems, comprising:

a storage means for storing area identification data identifying each communication area and connection indexes respectively corresponding to said area identification data showing an ease of connecting to each plurality of wireless systems;

a present position acquisition means for acquiring present position data;

a selection means for selecting area identification data from said storage means corresponding to present position data acquired by said present position acquisition means;

an extraction means for extracting a connection index of each said plurality of wireless systems from said storage means corresponding to area identification data selected by said selection means; and

a remote end determination means for determining, as a remote end, a wireless system having a connection index most easily connectable from among said connection indexes of said plurality of wireless systems extracted by said extraction means.

10. The mobile communication terminal according to claim 9, wherein said remote end determination means sorts said connection indexes of said plurality of wireless systems extracted by said extraction means by size and determines, as a remote end, a wireless system with a connection index with a largest value from among said connection indexes.

11. A communication control method performed at a mobile communication terminal capable of using a plurality of wireless systems, comprising:

a present position acquisition process for acquiring present position data; and

a remote end determination process for storing beforehand area identification data identifying each communication area and remote end selection data selecting a remote end wireless system from among a plurality of wireless systems corresponding to said area identification data respectively, selecting area identification data corresponding to present position data acquired by said present position acquisition process from among stored area identification data, and determining a remote end wireless system referring to remote end selection data corresponding to said selected area identification data.

12. The communication control method according to claim 11, wherein said present position data is base station identification data identifying a base station that the mobile communication terminal is placed in the idle state with.

13. The communication control method according to claim 11, wherein said remote end selection data is updated whenever communications processing is performed to any of said plurality of wireless systems.

14. The communication control method according to claim 11, wherein said remote end selection data contains reference data used as a reference of whether or not to use a remote end wireless system in each of said plurality of wireless systems.

15. The communication control method according to claim 14, wherein said reference data is updated by a differing method depending on a wireless system not performing communications processing, a wireless system performing communications processing and succeeding in connection or a wireless system performing communications processing but failing in connection.

16. The communication control method according to claim 15, wherein said reference data is numerical values.

17. The communication control method according to claim 11, wherein said remote end determination process determines, as a remote end, a wireless system having reference data exceeding a predetermined reference from said remote end selection data containing reference data.

18. The communication control method according to claim 11, wherein said remote end determination process determines a remote end wireless system using a probability corresponding to reference data from said remote end selection data containing reference data.

19. A communication control method performed in a mobile communication terminal capable of using a plurality of wireless systems, comprising:

a present position acquisition process for acquiring present position data;

an extraction process for storing beforehand area identification data identifying each communication area and connection index respectively corresponding to said area identification data and showing an ease of connecting to each plurality of wireless systems, selecting area identification data corresponding to present position data acquired by said present position acquisition process from among stored area identification data, and extracting a connection index of each of a plurality of wireless systems corresponding to said selected area identification data; and

a remote end determination process for determining, as a remote end, a wireless system having a connection index most easily connectable from among said connection index of said plurality of wireless systems extracted by said extraction process.

20. The communication control method according to claim 19, wherein said remote end determination process sorts said connection index of each said plurality of wireless systems extracted by said extraction process by size and determines, as a remote end, a wireless system with a connection index with a largest value from among said connection index.