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Method for processing emergency service

A technology of emergency services and processing methods, applied in the field of user emergency services, can solve the problems of destroying the basic conditions of emergency services, failure to find E-CSCF, users cannot use emergency services, etc., and achieve the effect of small changes and simple judgments

Inactive Publication Date: 2012-02-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this scenario, the P-CSCF that is not in the visited network will not be able to find the E-CSCF in the visited network, which destroys the basic conditions for emergency services
At this time, the user will not be able to use the emergency service

Method used

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  • Method for processing emergency service
  • Method for processing emergency service
  • Method for processing emergency service

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0026] image 3 It is an example of the signaling process of the present invention. At this time, when the P-CSCF of the home network receives the emergency service request, it is found that the P-CSCF and the UE are not in the same network. The message processing steps are as follows:

[0027] Step 110: The UE in the visited network initiates an emergency service request, which may be emergency registration or emergency session establishment;

[0028] Step 120: The P-CSCF of the home network receives the emergency service request, and it judges that it is not in the visited network where the UE is located. The judgment can be made based on the IP address of the user UE, but is not limited to the IP address of the user UE;

[0029] Step 130: The P-CSCF of the home network sends an emergency service request response to the user UE, and the response message carries information that the P-CSCF is not in the network where the UE is located;

[0030] Step 140: After receiving the...

no. 2 example

[0035] Figure 4 An example of the signaling process of the present invention is shown. At this time, when the S-CSCF of the home network receives the emergency service request, it is found that the P-CSCF and the UE are not in the same network. The message processing steps are as follows:

[0036] Step 210: The UE in the visited network initiates an emergency service request, which may be emergency registration or emergency session establishment;

[0037] Step 220: The P-CSCF of the home network forwards the request to the S-CSCF of the user UE's home network;

[0038] Step 230: The S-CSCF of the home network receives the emergency service request, and it determines that the P-CSCF is not in the visited network where the UE is located. This can be determined by the IP address of the user UE and the address of the P-CSCF, and is not limited to the user UE's IP address and P-CSCF address;

[0039] Step 240: the S-CSCF of the home network sends an emergency service request re...

no. 3 example

[0046] Figure 5 An example of the signaling process of the present invention is shown. At this time, when the E-CSCF of the home network receives the emergency service request, it is found that the P-CSCF and the UE are not in the same network. The message processing steps are as follows:

[0047] Step 310: The UE in the visited network initiates an emergency service request, which may be emergency registration or emergency session establishment;

[0048] Step 320: The P-CSCF of the home network forwards the request to the E-CSCF of the user UE's home network;

[0049] Step 330: The E-CSCF of the home network receives the emergency service request, and it determines that the P-CSCF is not in the visited network where the UE is located. This can be determined by the IP address of the user UE and the address of the P-CSCF, and is not limited to the user UE's IP address and P-CSCF address;

[0050] Step 340: The E-CSCF of the home network sends an emergency service request re...

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Abstract

The present invention provides a processing method of an emergency service, including following steps: (a), an user end initiates an emergency service request to a P-CSCF served the UE; (b), the UE receives the informing information from P-CSCF, the informing information is carried with information of P-CSCF not located in a visit network serving the UE; (c), the UE researches a P-CSCF in the visit network, or the UE is switched to a circuit switch domain. The invention resolves problem that the emergency service is not processed caused by not existing in the same network of the UE and P-CSCF in the prior art by informing UE, P-CSCF not in the network of the UE, UE researching the P-CSCF or switching to the CS domain. The invention has a simple operation, small system improvement.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method for processing user emergency services in an IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) of CDMA (Code Division Multiple Access) 2000. Background technique [0002] An IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) needs to provide support for emergency services. Standard specification in this respect is currently being carried out in both 3GPP (Third Generation Partnership Project) and 3GPP2 (Third Generation Partnership Project 2). figure 1 A structure diagram of an emergency call in 3GPP2 is given, in which network elements that have little relation to the content of the present invention have been omitted. [0003] The precondition of the present invention is that a user terminal (UE, User Equipment) uses a simple IP (Simple IP). [0004] Since services such as emergency calls and positioning are closely related, and these se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/22H04W4/90
CPCH04W76/007H04W4/22H04W76/50H04W4/90
Inventor 李振东
Owner ZTE CORP