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Method for implementing IP multimedia subsystem urgent call business

A multimedia subsystem and emergency call technology, applied in the field of communication, can solve the problems that ICSUE cannot determine the emergency call, cannot realize the emergency call service, etc.

Active Publication Date: 2008-07-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0088] The technical problem to be solved by the present invention is to provide a method for realizing the emergency call service of the IP multimedia subsystem, which overcomes the defect that the emergency call service cannot be realized due to the inability of the ICS UE to determine the emergency call service, and achieves the purpose of realizing the emergency call service

Method used

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  • Method for implementing IP multimedia subsystem urgent call business
  • Method for implementing IP multimedia subsystem urgent call business
  • Method for implementing IP multimedia subsystem urgent call business

Examples

Experimental program
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Effect test

no. 1 example

[0152] Fig. 7 is the emergency call processing flow of the IMS centralized service when the PS session control path is adopted in the IMS centralized service in this embodiment, and describes the call processing process when the user initiates an emergency call, but the ICS UE does not recognize that it is an emergency call . Include the following steps:

[0153] 701-703, the same as steps 501-503, UE-A sends a CS bearer establishment request through the bearer control path, and sends it to RUA in ICCF through VMSC, MGCF, I-CSCF / S-CSCF; ICCF waits for the control information in the control path , for the next steps.

[0154] At the same time of steps 701-703, UE-A executes step 704.

[0155] 704. UE-A sends a SIP session invitation request INVITE message to the P-CSCF through the PS session control path, and the message includes the SIP or TEL URI (Uniform Resource Identifier) ​​number of UE-B;

[0156] The message further carries an ICS session identification tag or an ICS...

no. 2 example

[0167] Fig. 8 is the process flow of the P-CSCF in this embodiment to the roaming user, describing the call processing process when the user initiates an emergency call, but the UE (including ICS UE) does not recognize the emergency call. Include the following steps:

[0168] If the UE is an ICS UE, steps 801 to 803 need to be performed, and if the UE is a common IMS UE, steps 801 to 803 do not need to be performed.

[0169] 801-803, the same as steps 501-503, UE-A sends a CS bearer establishment request through the bearer control path, and sends it to RUA in ICCF through VMSC, MGCF, I-CSCF / S-CSCF; ICCF waits for the control information in the control path , for subsequent steps;

[0170] At the same time as steps 801-803, UE-A performs step 804:

[0171] 804. UE-A sends a SIP session invitation request INVITE message to the P-CSCF, and the message includes the SIP or TEL URI (Uniform Resource Identifier) ​​number of UE-B.

[0172] 805. After receiving the session invitatio...

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Abstract

A realization process of an emergent calling service in an IP multimedia sub-system, which comprises that a proxy call session control function P-CSCF checks the property of the call after receiving the session invitation request of the call which is initiated by a user device, and judges the call type and the session type of the call, the P-CSCF returns the replacing service response to the user device if the call is judged as the emergent call by the P-CSCF, and as the integrated service session of the IP multimedia subsystem, comprises the emergent call instruction in the response, and notices the user device that the call is the emergent call, and the user device initiates a new emergent call from an IP multimedia subsystem domain IMS or an electric circuit domain after receiving the replacing service response. The invention overcomes the shortcoming that the emergent call service can be realized, as the ICS UE can not device the emergent call, thereby realizing the purpose of the emergent call service.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for realizing an emergency call service of an IP multimedia subsystem. Background technique [0002] According to government regulations, telecommunications networks must be able to provide emergency voice calling services. When the user dials the emergency call number, or uses the default emergency call number stored in the terminal device, or uses the emergency call identifier to initiate an emergency call, the network will connect the emergency call to the local emergency communication reception center, such as police, fire, medical rescue, Rescue etc. [0003] An IP (Internet Protocol, Internet Protocol) multimedia subsystem (IP Multimedia CoreNetwork Subsystem, IMS for short) must also provide an emergency call service. [0004] Figure 1 is a system reference framework for IMS emergency calls. The whole framework includes User Equipment (UE for short) 101, Proxy Call Se...

Claims

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Application Information

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IPC IPC(8): H04Q7/22H04Q7/38H04L29/06H04W4/90H04W76/00H04W80/10
CPCH04M2242/04H04W80/10H04L65/1016H04L65/1069H04W76/50H04W4/90
Inventor 郝振武游世林李振东邹常乐
Owner ZTE CORP
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