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US 8,526,952 B2Granted
Method and apparatus for supporting handoff from GPRS/GERAN to LTE EUTRAN
AssigneeInterDigital Technology Corporation
InventorKamel M. Shaheen
Life of this patent
Estimating the term…
Abstract
A method and apparatus for supporting a handoff (HO) from a general packet radio service (GPRS), global system for mobile communication radio access network (GERAN), and long term evolution (LTE) evolved universal terrestrial radio access network (EUTRAN) includes receiving an LTE measurement report. An HO is initiated to the LTE network and a relocation request signal is transmitted. A relocation command signal that includes an evolved Node-B (eNB) identifier (ID) is received.
Claims8
A method for use in an evolved Node-B (eNB), the method comprising:
- receiving a handover request message from a Long Term Evolution (LTE) Mobility Management Entity (MME), the handover request message including an identifier of a wireless transmit/receive unit (WTRU) to be handed over from GSM EDGE Radio Access Network (GERAN) technology to LTE technology;
- establishing radio resources for the WTRU based on the handover request message;
- communicating a handover request acknowledgement message to the MME;
- establishing a tunnel between the eNB and a GERAN base station controller (BSC) serving the WTRU;
- and
- receiving user data from the BSC via the tunnel;
- wherein the handover request message includes a cell identifier (ID), an MME ID, and a tunneling endpoint ID (TEID).
4 more elements
An evolved Node-B (eNB), the eNB comprising:
- a receiver, configured to receive a handover request message from a Long Term Evolution (LTE) Mobility Management Entity (MME), the handover request message including an identifier of a wireless transmit/receive unit (WTRU) to be handed over from GSM EDGE Radio Access Network (GERAN) technology to LTE technology;
- a processor, configured to establish radio resources for the WTRU based on the handover request message;
- and
- a transmitter, configured to communicate a handover request acknowledgement message to the MME;
- wherein the processor is further configured to establish a tunnel between the eNB and a GERAN base station controller (BSC) serving the WTRU;
- wherein the receiver is further configured to receive user data from the BSC via the tunnel;
- and
- wherein the handover request message includes a cell identifier (ID), an MME ID, and a tunneling endpoint ID (TEID).
5 more elements
Dependencies are inferred from the claim text.