RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD, RADIO COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To provide a radio communication device, a radio communication method, a radio communication system which switch communication systems in consideration of the remaining amount of a battery loaded on the radio communication device to suppress power consumption. SOLUTION: The rad...

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Bibliographische Detailangaben
1. Verfasser: NAKAJIMA NAOHIRO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a radio communication device, a radio communication method, a radio communication system which switch communication systems in consideration of the remaining amount of a battery loaded on the radio communication device to suppress power consumption. SOLUTION: The radio communication device determines the propriety of communication by providing a plurality of radio communication systems, grasping the effective speed of each communication system in a communication environment before starting radio data communication, managing a relation between a power amount required for performing data communication and a time when the radio communication should be completed by each communication system, selecting a communication system so that the consumption of the battery is minimized within the time when the communication should be completed, grasping the remaining amount of the battery of the radio communication device, and comparing the remaining amount of the battery with a power amount required for the data communication. COPYRIGHT: (C)2009,JPO&INPIT