| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an access point apparatus at a base station, etc., which suppresses a useless consumption of network resources and lightens the load of the network. SOLUTION: When an M-th portable terminal 203M calls a first portable telephone 2031, information for requesting its position are sent via a called home agent 235 to a called external agent 236 to inform a calling external agent 233 of a network ID 241. After establishing a control channel Ccn, an N-th access point unit 202N receives a packet over a user channel Uch from the M-th portable telephone 203M, converts it for regarding as an IP packet which a user cannot set, and makes a tunneling transfer to the called external agent 236 over a route shown by the arrow 245 wherein the authentication process in change over of location areas or handoff domains is emitted.</p> |
