Title of Invention

APPARATUS FOR PERFORMING INTER-SYSTEM HANDOVER IN EVOLVED PACKET CORE (EPC) NETWORK AND METHOD THEREOF

Abstract

Techniques for performing inter-system handover are described. An Access Gateway (AGW) sends a message requesting handover of a user equipment (UE) from a first radio access network (RAN) to a second RAN. The message is sent to an Inter Access System (inter-AS) Anchor for the first RAN communicating with an SGSN for the second RAN via a Gn interface. The Inter-AS Anchor and SGSN exchange messages via the Gn interface, and the Inter-AS Anchor forwards the messages to the AGW to handover the UE from the first RAN to the second RAN. The SGSN sees the Inter-AS Anchor as another SGSN for the handover and as a GGSN after the handover. This allows the inter-system handover to be achieved with an inter-SGSN SRNS relocation procedure used for handover between two SGSNs, which reduces impact on the SGSN to support the inter-system handover.

Full Text	The present disclosure relates generally to communication, and more specifically to techniques for performing handover between wireless communication networks using, different radio access technologies.

Documents:

205-MUMNP-2008-ABSTRACT(14-03-2012).pdf

205-mumnp-2008-abstract(6-2-2008).pdf

205-MUMNP-2008-ABSTRACT(GRANTED)-(25-6-2012).pdf

205-MUMNP-2008-CANCELLED PAGES(14-3-2012).pdf

205-mumnp-2008-claims(6-2-2008).pdf

205-MUMNP-2008-CLAIMS(AMENDED)-(14-03-2012).pdf

205-MUMNP-2008-CLAIMS(AMENDED)-(19-6-2012).pdf

205-MUMNP-2008-CLAIMS(AMENDED)-(7-6-2012).pdf

205-MUMNP-2008-CLAIMS(GRANTED)-(25-6-2012).pdf

205-MUMNP-2008-CLAIMS(MARKED COPY)-(14-03-2012).pdf

205-MUMNP-2008-CLAIMS(MARKED COPY)-(19-6-2012).pdf

205-MUMNP-2008-CLAIMS(MARKED COPY)-(7-6-2012).pdf

205-mumnp-2008-correspondence(10-7-2008).pdf

205-MUMNP-2008-CORRESPONDENCE(19-6-2012).pdf

205-MUMNP-2008-CORRESPONDENCE(IPO)-(25-6-2012).pdf

205-mumnp-2008-description(complete)-(6-2-2008).pdf

205-MUMNP-2008-DESCRIPTION(GRANTED)-(25-6-2012).pdf

205-mumnp-2008-drawing(6-2-2008).pdf

205-MUMNP-2008-DRAWING(GRANTED)-(25-6-2012).pdf

205-MUMNP-2008-DRAWINGS(14-03-2012).pdf

205-MUMNP-2008-FORM 1(14-03-2012).pdf

205-mumnp-2008-form 1(6-2-2008).pdf

205-mumnp-2008-form 18(7-2-2008).pdf

205-mumnp-2008-form 2(6-2-2008).pdf

205-MUMNP-2008-FORM 2(GRANTED)-(25-6-2012).pdf

205-MUMNP-2008-FORM 2(TITLE PAGE)-(14-03-2012).pdf

205-mumnp-2008-form 2(title page)-(6-2-2008).pdf

205-MUMNP-2008-FORM 2(TITLE PAGE)-(GRANTED)-(25-6-2012).pdf

205-MUMNP-2008-FORM 26(14-03-2012).pdf

205-MUMNP-2008-FORM 26(14-3-2012).pdf

205-MUMNP-2008-FORM 26(7-6-2012).pdf

205-mumnp-2008-form 3(10-7-2008).pdf

205-MUMNP-2008-FORM 3(14-03-2012).pdf

205-mumnp-2008-form 3(6-2-2008).pdf

205-mumnp-2008-form 5(6-2-2008).pdf

205-MUMNP-2008-PETITION UNDER RULE 137(14-03-2012).pdf

205-MUMNP-2008-REPLY TO EXAMINATION REPORT(14-03-2012).pdf

205-MUMNP-2008-REPLY TO HEARING(7-6-2012).pdf

205-MUMNP-2008-US AND EP PROSECUTION HISTORY(14-03-2012).pdf

205-mumnp-2008-wo international publication report(6-2-2008).pdf

250-MUMNP-2008-CORRESPONDENCE 10-7-2008.pdf

250-MUMNP-2008-FORM 3 10-7-2008.pdf

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