Radio access device, a radio access system, a network selection method and a recording medium

A radio access device comprising:

• an acquisition unit which acquires network information about a network to be used for communication from an administration entity which administers the information;
• and
• a selection unit which, based on said network information acquired, obtains first information which indicates availability of a network at a current position of its own and second information which indicates availability of a network at a position other than the current position of its own, and selects a network to be used for communication using said first and the second information obtained.

A network selection method of a radio access device comprising a function to select, in an environment where a plurality of networks is intermingled, one from among these networks, said network selection method comprising the steps of:

• acquiring network information about a network to be used for communication from an administration entity which administers the information;
• and
• obtaining, based on said network information acquired, first information which indicates availability of a network at a current position of its own and second information which indicates availability of a network at a position other than the current position of its own, and selecting a network to be used for communication using said first and the second information obtained.

A recording medium in which a network selection program in a radio access device comprising a function to select, in an environment where a plurality of networks is intermingled, one from these networks is recorded, wherein said network selection program makes a computer of said radio access device execute the proceedings of:

• acquiring network information about a network to be used for communication from an administration entity which administers the information concerned;
• and
• obtaining, based on said network information acquired, first information which indicates availability of a network at a current position of said radio access device and second information which indicates availability of a network at a position other than the current position, and selecting a network to be used for communication using said first and the second information obtained.