Patent ID: 8149790

Claim:
A dual-mode wireless transmit/receive unit (WTRU) comprising: a first modem of a first technology type, wherein the first technology type is wideband code division multiple access (WCDMA) and the first modem is a WCDMA modem; a second modem of a second technology type; and a processor configured to operate Media Independent Handover (MIH) middleware, wherein: the WCDMA modem is configured to communicate with an MIH server using a WCDMA connection, and the MIH middleware is configured to receive a handover command from the MIH server via the WCMDA modem and, in response to the handover command, to map WCDMA Quality of Service (QoS) to QoS of the second technology type; the MIH middleware and WCMDA modem are further configured, in response to the mapping to QoS of the second technology type, to power down the WCDMA modem; the MIH middleware and second modem are further configured, in response to the power down of the WCDMA modem, to perform a switch from the WCDMA modem to the second modem, to subsequently perform a Mobile Internet Protocol (Mobile IP) binding update, and to subsequently communicate an MIH switch response to the MIH server; and the MIH middleware and the WCDMA modem are further configured, in response to the communication of the MIH switch response, to tear down the WCDMA connection.