Invention Grant
US08942660B2 Method and apparatus for performing handover of an emergency call between wireless networks
有权
用于在无线网络之间执行紧急呼叫的切换的方法和装置
- Patent Title: Method and apparatus for performing handover of an emergency call between wireless networks
- Patent Title (中): 用于在无线网络之间执行紧急呼叫的切换的方法和装置
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Application No.: US12793580Application Date: 2010-06-03
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Publication No.: US08942660B2Publication Date: 2015-01-27
- Inventor: Stephen W. Edge , Arungundram C. Mahendran
- Applicant: Stephen W. Edge , Arungundram C. Mahendran
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Main IPC: H04M11/04
- IPC: H04M11/04 ; H04W36/00 ; H04W76/00 ; H04W4/22

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.
Public/Granted literature
- US20100311386A1 METHOD AND APPARATUS FOR PERFORMING HANDOVER OF AN EMERGENCY CALL BETWEEN WIRELESS NETWORKS Public/Granted day:2010-12-09
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