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Method for transferring emergent service session and emergent service system

An emergency service and emergency session technology, applied in emergency/dangerous communication services, emergency connection processing, wireless communication services, etc., can solve the problems of not being able to carry IMEI, unable to implement emergency service session switching, etc., to overcome the continuity of voice service switching. Effect

Active Publication Date: 2014-03-12
ZTE CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0063] Under the existing SRVCC architecture, since no card user terminal or unauthenticated user terminal needs to use IMEI (International Mobile Equipment Identity, International Mobile Equipment Identity) to initiate a call, and the ISUP message in step A208 cannot carry IMEI, it is impossible to use IMEI As session association information, it is impossible to switch emergency business sessions

Method used

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  • Method for transferring emergent service session and emergent service system
  • Method for transferring emergent service session and emergent service system
  • Method for transferring emergent service session and emergent service system

Examples

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Embodiment Construction

[0108] The core idea of ​​the present invention is to set up an emergency SCC AS (E-SCCAS) in the local network of the UE, and add an interface Ms between the E-SCC AS and the enhanced MSC. This interface realizes: when the enhanced MSC receives the emergency After the switching request, the emergency session association information is sent to the emergency SCC AS through the Ms interface, and the emergency SCC AS uses the emergency session association information to associate and update the remote session branch.

[0109] In addition, the Ms interface is also used to indicate that the emergency SCC AS user has accessed when the enhanced MSC receives the handover access message (processing the access signaling message); it can also be used when the enhanced MSC receives the handover complete Signal message), instruct the emergency SCC AS to release the source session Leg.

[0110] The interface may use MAP signaling or SIP messages to transfer information or enhanced ISUP mess...

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Abstract

A method for emergency service session handover and an emergency service system are provided, and user equipment (UE) establishes the emergency service session anchored with the emergency service centralization and continuity application server (SCC AS) with the public safety answering point (PSAP) through the Long Term Evolution / System Architecture Evolution(LTE / SAE) network; when the emergency service session needs to be switched to accessing from the Circuit Switched(CS) domain, the method includes: the enhanced Mobile Switch Center(MSC) uses the Mobile Application  Part(MAP) signal, the Session Initial Protocol(SIP) message or the enhanced ISDN User Part(ISUP) message to send the emergency session associated information of the emergency service session to the emergency SCC AS; the emergency SCC AS finds out the emergency service session according to the emergency session associated information, and then the emergency SCC AS updates the remote session branch of the emergency service session; the enhanced MSC notifies the UE to access from the GERAN or the UTRAN of the CS domain; wherein the remote session branch is the session resource of the emergency service session established before the handover between the emergency SCC AS and the PSAP.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for switching an emergency service session and an emergency service system. Background technique [0002] In order to ensure the continuity of voice services between the Circuit Switched (CS for short) domain and the IP (Internet Protocol, Internet Protocol) multimedia subsystem (IP Multimedia Core Network Subsystem, IMS for short) network, the traditional voice service continuity (Voice Call Continuity, referred to as VCC) solutions such as figure 1 shown. [0003] Among them, after the dual-mode user equipment (User Equipment, referred to as UE) is successfully registered in both the CS domain and the IMS network, when the UE initiates a voice service in the CS domain or the IMS network, the voice service is anchored to the centralized control service of the IMS network In the session service continuity application server (ServiceCentralization and Continuity Application Se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/16H04W4/22H04W76/02H04W76/06H04W80/10H04W4/90
CPCH04W76/007H04W36/0022H04W4/22H04W76/50H04W4/90H04W36/00226
Inventor 游世林蔡继燕李振东郝振武
Owner ZTE CORP
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