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US 8,149,790 B2Granted
Bi-directional handover method and apparatus
AssigneesInterDigital Technology Corporation, SK Telecom Co., Ltd.
InventorsDebashish Purkayastha, Shamim Akbar Rahman
Life of this patent
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Abstract
Apparatus for bi-directional handover are disclosed. An apparatus configured to perform handover from a wireless code division multiple access (WCDMA) to a wireless broadband (WiBro) network is disclosed. An apparatus configured to perform handover from a WCDMA network to a WiFi (IEEE 802.11x) network is disclosed. An apparatus configured to perform handover from a WiFi network to a WCDMA network is disclosed.
Claims21
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.
6 more elements
A dual-mode wireless transmit/receive unit (WTRU) comprising:
- a wideband code division multiple access (WCDMA) modem;
- an IEEE 802.11x (WiFi) modem;
- and
- a processor configured to operate Media Independent Handover (MIH) middleware, wherein:
- the WiFi modem is configured to communicate with an MIH server using a WiFi connection, and the MIH middleware is configured to receive a handover command from the MIH server via the WiFi modem and to map WiFi Quality of Service (QoS) to WCMDA QoS;
- the MIH middleware and WCDMA modem are further configured, in response to the mapping to WCDMA QoS, to perform a switch from the WiFi modem to the WCDMA modem, subsequently to set up a packet-switched (PS) session, subsequently to perform a Mobile Internet Protocol (Mobile IP) binding update, and subsequently to communicate an MIH switch response to the MIH server;
- and
- the MIH middleware and the WiFi modem are further configured, in response to the communication of the MIH switch response, to close the WiFi connection.
5 more elements
Dependencies are inferred from the claim text.