MOBILE TERMINAL DEVICE, CONTROL METHOD AND MOBILE COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To achieve a rooting having a small overhead.

SOLUTION: In a mobile terminal device forming an adhoc network, clustering means (21 and 25) is fitted for recognizing the ID and state of the mobile terminal device adjacent to itself by the exchange of Hello packets (containing the ID and state of itself) with other mobile terminal devices, and setting the state of itself to a cluster head, a gate way or a member on the basis of the state of the adjacent mobile terminal device and the state of itself. The mobile terminal device forming the adhoc network fits preserving means (27 and 28) for preserving the ID and state of the adjacent mobile terminal device and the state of itself; and a link-information transmitting-receiving means (22) for transmitting link informations containing the ID of the adjacent mobile terminal device and the ID of itself, while receiving the link informations from other mobile terminal devices when the state of itself is the cluster head. The mobile terminal device further fits a rooting means (26) for obtaining a root to an arbitrary mobile terminal device on the basis of the transmitted-received link informations.

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