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Non-voice emergency call control method, ip multimedia subsystem and p-cscf

A technology of P-CSCF and emergency call, which is applied in the field of agent call session control function, and can solve the problems of not knowing whether the user has subscribed, wrong control of non-voice emergency call services, etc.

Inactive Publication Date: 2011-12-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a user initiates a non-voice emergency call, the P-CSCF cannot know whether the user is subscribed to the non-voice emergency call service, which may lead to wrong control of the non-voice emergency call service by the P-CSCF

Method used

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  • Non-voice emergency call control method, ip multimedia subsystem and p-cscf
  • Non-voice emergency call control method, ip multimedia subsystem and p-cscf
  • Non-voice emergency call control method, ip multimedia subsystem and p-cscf

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0100] Image 6 It is a flow chart for the P-CSCF to acquire non-voice emergency call subscription information during the registration process, and its specific steps are as follows:

[0101] 601. The terminal UE initiates a registration request;

[0102] 602. According to the S-CSCF allocation method of the network, the P-CSCF sends the registration request to the S-CSCF;

[0103] 603. The S-CSCF queries the HSS for user data information;

[0104] 604. The HSS returns the user data information to the S-CSCF, including the registration information of the terminal and the identifier of whether to subscribe to a non-voice emergency call;

[0105] 605. After the S-CSCF verifies that the user is legal and agrees to register, it sends a 200 OK response to the P-CSCF, which includes the registration information of the terminal and the id...

Embodiment 3

[0117] Figure 8 Flowchart for initiating a non-voice emergency call for a terminal, including:

[0118] 801. When the user is in danger and needs to initiate an emergency call, the UE chooses to send a non-voice emergency call;

[0119] 802. After receiving the non-voice emergency call request, the P-CSCF judges the user's request;

[0120] 803. Finding that the user subscribes to a non-voice emergency call service, the P-CSCF directly routes the non-voice emergency call request to the E-CSCF;

[0121] 804, the E-CSCF routes the non-voice emergency call request to an appropriate PSAP;

[0122] 805-807. After receiving the request, the PSAP responds to it, and sends a 200 OK response to the user UE, and the call is established successfully.

[0123] Figure 9 Here is another flowchart for a user to send a non-voice emergency call:

[0124] 901. When the user is in danger and needs to initiate an emergency call, the UE chooses to send a non-voice emergency call;

[0125] ...

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PUM

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Abstract

A method, Internet Protocol (TP) multimedia sub-system and Proxy Call Session Control Function (P-CSCF) for controlling non-voice emergency calls are disclosed in the present invention. The method for controlling non-voice emergency calls includes that: P-CSCF acquires and stores non-voice emergency call subscription information of a terminal; when the terminal initiates a non-voice emergency call, the P-CSCF judges, according to the stored subscription information, whether the terminal has subscribed the non-voice emergency call, if yes, the non-voice emergency call is allowed to continue; if not, the non-voice emergency call request is refused. The method, system and P-CSCF of the present invention can implement the control over the non-voice emergency call.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for controlling non-voice emergency calls in an IP multimedia subsystem, an IP multimedia subsystem and a proxy call session control function. Background technique [0002] The existing emergency call service is only for the voice service, that is, a voice call is made to an emergency call number. But in some special situations, such as being in danger, it is impossible and more dangerous to make a voice call to call the police. Also, for some people who have speech problems or hearing problems, when they are in an emergency and need to contact the emergency center, it is also very difficult for them to rely on voice calls. [0003] Therefore, people hope to use non-voice services to realize emergency calls, such as sending an alarm short message to the emergency call center, and write the current situation and needs in the short message, so that the em...

Claims

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Application Information

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IPC IPC(8): H04W4/16H04W4/22H04W8/04H04W80/10H04L29/06H04W4/90
CPCH04M7/006H04L65/1016H04L29/06217H04M3/42382H04M3/5116
Inventor 李世涛
Owner ZTE CORP
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