Patent ID: 8027322

Claim:
A method for performing communication between a mobile node comprising means for communicating with at least first and second different wireless networks and each of network nodes of said first and second wireless networks, said method comprising the steps of: sending a first message wishing communication with a network node of said second wireless network which is currently inaccessible, from said mobile node to a network node of said first wireless network currently accessible by said mobile node; sending said first message with added distance information about a distance from the network node receiving said first message to the network node of said second wireless network, from the network node receiving said first message to nearby network nodes of said first and second wireless networks; the network node of said second wireless network receiving the first message with the added distance information checking whether said distance information decreases from that of said first message previously received, and if it is judged that said mobile node is approaching when the distance information decreases sending a second message guiding communication with its network to nearby network nodes; transferring said second message from the network node receiving said second message to the network node of said first wireless network accessible by said mobile node; transferring said second message from the network node of said first wireless network receiving said second message to said mobile node; and presenting said second message to a user from said mobile node receiving said second message.