Nova Patents
WO2010141882A3

Method and apparatus for performing handover of an emergency call between wireless networks

Abstract

Techniques for supporting handover of an emergency call between wireless networks are described. A UE may communicate with a first wireless network (e.g., a 3GPP E-UTRAN) for an emergency call and may receive an indication to perform handover to a second wireless network (e.g., a CDMA2000 1xRTT network). In an aspect, the UE may send a message including an emergency indication (an emergency global number, or a reserved emergency number, or some other indication) to initiate handover to the second wireless network. A designated network entity may recognize the emergency call based on the emergency indication and may map the emergency indication to a local emergency number or an Emergency Session Transfer Number for SRVCC (E-STN-SR), which may be used to establish a new incoming call leg to a network server anchoring the emergency call. The UE may then communicate with the second wireless network via the network server for the emergency call after handover.

Term

No projected expiry on record.

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Every citation, both ways

Citations
DocumentRelationOfficeCategoryCited duringRelevant claims
CN105323813ACited byChina–Search report–
WO2007016695A2CitesWorld Intellectual Property Organization (WIPO)YInternational search22,23,25,27-30
WO2007016695A2CitesWorld Intellectual Property Organization (WIPO)YInternational search22,23,25,27-30
WO2008028402A1CitesWorld Intellectual Property Organization (WIPO)AInternational search1-21
WO2008028402A1CitesWorld Intellectual Property Organization (WIPO)AInternational search1-21
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QUALCOMM EUROPE: "SRVCC functionality for emergency calls", 3GPP DRAFT; S2-093755 (REV OF S2-093574-S2-092792), 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Tallinn; 20090514, 14 May 2009 (2009-05-14), XP050346787Non-patent––International search–
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NOKIA SIEMENS NETWORKS ET AL: "Location Continuity in SRVCC", 3GPP DRAFT; S2-091157_S2_71_SRVCC.LCS.V02, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Budapest; 20090210, 10 February 2009 (2009-02-10), XP050333559Non-patent––International search–