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Mobile terminal apparatus, and control method and communication system for the apparatus

一种便携终端、通信系统的技术，应用在便携终端装置及其控制方法和通信系统领域，能够解决耗尽电池、耗电增加等问题，达到便利性抑制的效果

Inactive Publication Date: 2009-11-25
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, in the mobile phone device, it is necessary to regularly receive and send signals for monitoring the communication methods that can communicate in the service area through multiple communication methods, and periodically transmit signals for monitoring the communication environment through one communication method. There is a problem that the power consumption increases compared to the case of the battery, which becomes the cause of the battery being exhausted prematurely.

Method used

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  • Mobile terminal apparatus, and control method and communication system for the apparatus
  • Mobile terminal apparatus, and control method and communication system for the apparatus
  • Mobile terminal apparatus, and control method and communication system for the apparatus

Examples

Experimental program
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no. 1 Embodiment approach

[0031] figure 1 It is a schematic configuration diagram showing a plurality of communication systems 10a and 10b that are an environment in which the mobile phone device 20 as the mobile terminal device according to the first embodiment of the present invention is used. Such as figure 1 As shown, the mobile communication network 11 and the mobile communication center 12 constituting the first communication system 10a are a communication environment in which communication is performed by, for example, the W-CDMA method (the first communication method), and correspondingly, the mobile communication network 11 constituting the second communication system 10b The mobile communication network 13 and the mobile communication center 14 are a communication environment in which communication is performed by, for example, the GSM method (second communication method).

[0032] The mobile phone device 20 can communicate with the mobile communication center 12 via the mobile communication...

no. 2 Embodiment approach

[0051] In the above-mentioned first embodiment, when the remaining battery level is less than the threshold value, the case where communication is fixed to any one of the communication methods (the first communication control unit 22 or the second communication control unit 23) has been described, but in this embodiment The mobile phone device 20 is different from the first embodiment in that it acquires information on communication methods that can be communicated in the service area from a server or the like, and selects a communication method to be fixed based on the information.

[0052] which is, Figure 5 It is a flowchart showing the processing procedure of the communication method switching process of the mobile phone device 20 of this embodiment. When the power is turned ON, the control unit 21 enters the processing procedure, and in step ST21, it is judged whether the service area area is foreign area. As this judging method, for example, it is possible to use a met...

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Abstract

To provide a mobile terminal apparatus capable of suppressing exhaustion of the battery while securing convenience of switching to a communication system corresponding to an existing area, and a control method and communication system for the apparatus, a mobile terminal apparatus 20 is driven by power supply from a battery, capable of communicating with each of a plurality of communication systems, monitors a communication environment with each of the communication systems, and has a detecting section that detects a battery remaining amount of the battery, and a control section 21 that limitstargets to monitor when the battery remaining amount falls below a first threshold.

Description

technical field [0001] The present invention relates to a portable terminal device, a control method thereof, and a communication system, and more particularly, to a portable terminal device having a function of switching a communication system as a communication target, a control method thereof, and a communication system. Background technique [0002] Conventionally, as a communication method of a mobile phone device, there are various methods such as a W-CDMA method and a GSM (Global System for Mobile Communications) method. A system is conceivable that enables a mobile phone device that communicates with a certain communication method to be used also in a communication area of ​​a communication system that uses a communication method different from the communication method (see Patent Document 1). In such a system, when a mobile phone device that communicates in a communication method different from a certain communication method moves into a communication area of ​​a co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W88/06
CPCH04W48/16H04W88/06H04W52/0277Y02D30/70
Inventor 长沢秀之齐藤裕介佐藤耕平
Owner NTT DOCOMO INC