Wireless communication method and system for implementing media independent handover between technology diversified access networks

A wireless communications system comprising at least one IEEE 802 multi-stack WTRU as well as several technologically diversified access networks, such as the 'IEEE 802.X' network and the 'Third Generation Partnership Project' (3GPP) network, currently in use. WTRU and the technologically diversified networks include a media independent handover (MIH) feature. WTRU is configured to read MIH information sent from one of the "IEEE 802.X" networks, trigger 3GPP authentication and authorization procedures based on MIH information, obtain a local Internet Protocol (IP) address, establish a tunnel to a packet data gateway (PDG) in a 3GPP core network, construct a care of address (CoA) and register this CoA with a WTRU home agent, whereby data determined for WTRU is routed through the home agent through a new tunnel established between the home agent and an external agent, based on this CoA.