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Srvcc emergency call support apparatus, system and method

A device and technology for emergency sessions, applied in the field of communication networks, can solve problems such as inability to use, telecommunication technology failing to provide support for SRVCC emergency calls or emergency sessions

Active Publication Date: 2011-10-12
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution cannot be used in emergency SRVCC scenarios, since SRVCC handover and domain transfer are triggered by the access network which is not aware of the dynamic STN
Therefore, currently available telecommunication technologies do not provide support for SRVCC emergency calls or emergency sessions

Method used

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  • Srvcc emergency call support apparatus, system and method
  • Srvcc emergency call support apparatus, system and method
  • Srvcc emergency call support apparatus, system and method

Examples

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Embodiment Construction

[0019] figure 1 is a block diagram of the SRVCC emergency call support system 100 . The system 100 includes an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) 110, a Mobility Management Entity (MME) 120 (which may also be configured as a GPRS Support Node (SGSN)), an SRVCC Mobility Switching Center (SRVCC MSC) 130 , 3rd Generation Partnership Project (3GPP) Internet Protocol Multimedia Subsystem (IMS) 140 , 3rd Generation Access Network (3G) 150 , and user equipment 160 . The components of system 100 cooperate to allow support of Single Radio Voice Call Continuity (SRVCC) emergency calls in accordance with embodiments described herein.

[0020] In some embodiments, user equipment 160 initiates an IMS emergency session with a Long Term Evolution (LTE) or High Speed ​​Packet Access (HSPA) network (represented by E-UTRAN 110 ). In some embodiments, E-UTRAN 110 is an access network with respect to user equipment 160 . The emergency session may be a Voice over Inter...

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PUM

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Abstract

Method and apparatus, including computer program products, are provided for SRVCC emergency call support. The method may include receiving, at a mobility switching center, a first message representing a request to handover an emergency communication session from a first network to a second network. The mobile switching center may obtain a value representing an emergency session transfer number. The mobility switching center may also send a second message to the first network. The second message may initiate handover of the emergency communication session from the first network to the second network. The second message may comprise the value representing the emergency session transfer number. Related apparatus, systems, methods, and articles are also described.

Description

technical field [0001] The present invention relates generally to communication networks. More specifically, the present invention relates to communication networks supporting emergency sessions and emergency calls. Background technique [0002] Current state-of-the-art telecommunication technologies provide for performing handover from Long Term Evolution (LTE) or High Speed ​​Packet Access (HSPA) systems to second-generation (2G) or third-generation (3G) cellular telecommunication networks in non-emergency situations ( HO) operation solution. Such operations often involve handover from a Voice over Internet Protocol (VoIP) session using the Internet Protocol Multimedia Subsystem (IMS) to the circuit switched domain and are sometimes referred to as Single Radio Voice Call Continuity (SVRCC) operations. [0003] In currently available SRVCC operation, handover typically involves a Mobility Switching Center (MSC) performing a domain transfer using a Session Transfer Number ...

Claims

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Application Information

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IPC IPC(8): H04W4/22H04L29/06H04W36/34H04L9/40H04W4/90
CPCH04W36/0066H04W4/90H04W76/50H04W36/14H04W36/38H04L9/40
Inventor J·米蒂凯南C·王
Owner NOKIA TECHNOLOGLES OY
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