Data flow between a data network and a mobile node

摘要

For data flow between a subnet (16) of a data network (4) and a mobile node (6), re-routing such that the data flow goes through a different access network is described. The data network (4) may for example be the Internet, the subnet (16) may be an Internet protocol (IP) subnet, and the access networks (20, 36) may be a UMTS network, HiperLAN, Bluetooth, IEEE 802.11b, Ethernet etc. The mobile node (6) may be, for example, a mobile telephone or a personal data assistant with radio communication capability.