METHOD AND APPARATUS FOR HANDOVER BETWEEN HETEROGENEOUS NETWORKS
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
Nov 16, 2012
filing date -
Nov 18, 2011
priority date (Note) -
Abandoned
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Abstract
Provided are a handover method between heterogeneous networks and an apparatus thereof. The handover method between heterogeneous networks includes receiving a handover request message indicating a handover request from an evolved Node B (eNB) to the heterogeneous network, transmitting a first indirect data forwarding tunnel request requesting generation of an indirect data forwarding tunnel between the heterogeneous networks to an enhanced Packet Data Gateway (ePDG) when the handover request message is received, receiving ePDG address information of a tunneling target ePDG from the ePDG, transmitting a second indirect data forwarding tunnel request including the ePDG address information to a serving gateway, receiving S-GW address information from the serving gateway, and transmitting a handover command including the S-GW address information to the eNB. The method can prevent data from being lost during handover procedure between heterogeneous networks.
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