CN106559768A - Emmergency call method, urgent call call-back method and system - Google Patents
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Abstract
The invention provides a kind of Emmergency call method, urgent call call-back method and system, wherein, the urgent call call-back system includes：Urgency communication accepts center (PSAP), proxy call conversation control function entity (P-CSCF), emergency call session control function entity (E-CSCF) and application server (VoLTE AS).IMS emergency telephone numbers and common number are synthesized a urgent identification number by P-CSCF, and the urgent identification number is sent to PSAP by E-CSCF and VoLTE AS.When PSAP clawbacks one call callback number, when application server judges the calling callback number for urgent identification number, calling callback number is directly sent to P-CSCF by E-CSCF, after P-CSCF finds common number corresponding with the urgent identification number, direct clawback user equipment corresponding with the common number.
Description
Technical field
The present invention relates to moving communicating field, especially a kind of Emmergency call method, urgent call call-back method and system.
Background technology
When running into emergency (such as natural disaster etc.) and needing relief, user can call particular number (China such as 110,120, U.S. such as 911 etc.), contact emergency call center by IMS network.After user's calling EC, because of the reason such as location expression is unclear, EC needs callback user.
Fig. 1 is IMS urgent call reference frames.Whole framework includes user equipment (UE，User Equipment)101、Proxy call conversation control function entity (P-CSCF，Proxy Call Session Control Function)102、Service call session control function entity (S-CSCF，Serving Call Session Control Function)103、Home subscriber server (HSS，Home Subscriber Server)104、Emergency call session control function entity (E-CSCF，Emergency Session Control Function)105、Position acquisition function (LRF，Location Retrieval Function) 106 and urgency communication accept center (PSAP，Public Safety Answering Point)107.
Wherein, P-CSCF102 is agency, is responsible for forwarding UE101 and S-CSCF103 directly request and response.S-CSCF is the home service entity of UE, is responsible for providing service logic and control of authority etc. to UE101.HSS preserves business of the register information of user and customization etc..LRF106 is responsible for network the positional information for providing active user.PSAP107 is emergency call service center, is responsible for the urgent call of accepted user.
E-CSCF103 is the new functional entity introduced in IMS domain，Which is located in consolidated network (being the visited network of user when a user roams) with P-CSCF102，It is responsible for receiving the emergent session foundation request from P-CSCF102，The positional information provided according to user or the positional information obtained from LRF106 and routing iinformation，Emergent session is set up into request it is routed to through Mm and is connected to IP network urgency communication and accepts center 107，Or through Mi/Mj interface routes to being connected to PSTN (PSTN，Public Switch Telephone Network) urgency communication accept center 107. while，Urgency communication accepts center 107 and can pass through Le interfaces direct access customer position information from LRF106，And contacted by Mm/Mw interfaces and home network，With callback user.
In the urgent call of IMS, when user carries out urgent call, what calling number was carried is common Subscriber Number.But when the common subscriber number of emergency call user has opened the business such as call blocking, unconditional forward pass, PSAP can not be according to the common direct callback of Subscriber Number to the user.
The content of the invention
It is an object of the invention to provide a kind of Emmergency call method, urgent call call-back method and system, and though enable to PSAP open when IMS user carries out urgent call what limit service can directly callback to the user.
In order to achieve the above object, the invention provides a kind of Emmergency call method, urgent call call-back method and system, wherein, a kind of Emmergency call method is comprised the following steps：
One user equipment passes through one IMS emergency telephone numbers of a common number call, to initiate an IMS emergency call requests；
One proxy call conversation control function entity receives the IMS emergency call requests, forms a urgent identification number according to the common number and IMS emergency telephone numbers, and the urgent identification number is sent to an emergency call session control function entity；
The emergency call session control function entity sends the urgent identification number and common number to a urgency communication and accepts center.
Preferably, in above-mentioned Emmergency call method, after the proxy call conversation control function entity forms a urgent identification number, the urgent identification number and common number are stored.
Preferably, in above-mentioned Emmergency call method, the urgent identification number and common number are sent the emergency call session control function entity process for accepting center to a urgency communication includes：
The emergency call session control function entity carries the urgent identification number and common number is routed to an application server；And
Urgent identification number and common number described in the application server for storage, and be routed to the urgency communication and accept center.
Preferably, in above-mentioned Emmergency call method, the urgent identification number includes the common number and IMS emergency telephone numbers.
Preferably, in above-mentioned Emmergency call method, the IMS emergency telephone numbers are located at the head of the urgent identification number, and the common number is located at the afterbody of the urgent identification number.
Preferably, in above-mentioned Emmergency call method, the IMS emergency telephone numbers include：110th, 119,120 and 112.
Present invention also offers a kind of urgent call call-back method, comprises the following steps：
One user equipment passes through one IMS emergency telephone numbers of a common number call, to initiate an IMS emergency call requests；
One proxy call conversation control function entity receives the IMS emergency call requests, forms a urgent identification number according to the common number and IMS emergency telephone numbers, and the urgent identification number is sent to an emergency call session control function entity；
The emergency call session control function entity sends the urgent identification number and common number to a urgency communication and accepts center；
The urgency communication accepts center user equipment according to the direct callback of the urgent identification number.
Preferably, in above-mentioned urgent call call-back method, after the proxy call conversation control function entity forms a urgent identification number, the urgent identification number and common number are stored.
Preferably, in above-mentioned urgent call call-back method, the urgent identification number and common number are sent the emergency call session control function entity process for accepting center to a urgency communication includes：
The emergency call session control function entity carries the urgent identification number and common number is routed to an application server；And
Urgent identification number and common number described in the application server for storage, and be routed to the urgency communication and accept center.
Preferably, in above-mentioned urgent call call-back method, the urgency communication accepts center to be included the step of user equipment according to the urgent identification number callback：
The urgency communication accepts center and dials a calling callback number, to initiate a calling callback request, and is routed to the application server；
The application server receives the calling callback request, judges that the calling callback number, for the urgent identification number, the urgent identification number is sent to the proxy call conversation control function entity；
The proxy call conversation control function entity searches corresponding described common number according to the urgent identification number, directly calls the user equipment corresponding with the common number.
Preferably, in above-mentioned urgent call call-back method, include the step of the application server sends the urgent identification number to the proxy call conversation control function entity：
The application server sends the urgent identification number to the emergency call session control function entity；
The emergency call session control function entity receives the urgent identification number, and sends to the proxy call conversation control function entity.
Preferably, in above-mentioned urgent call call-back method, the calling callback request is received in the application server, in the step of judging the calling callback number for the urgent identification number, judge the calling callback number for the urgent identification number according to the head of the calling callback number.
Preferably, in above-mentioned urgent call call-back method, when the head of the calling callback number includes the IMS emergency telephone numbers, the calling callback number is the urgent identification number.
Preferably, in above-mentioned urgent call call-back method, the urgent identification number includes the common number and the IMS emergency telephone numbers.
Preferably, in above-mentioned urgent call call-back method, the IMS emergency telephone numbers are located at the head of the urgent identification number, and the common number is located at the afterbody of the urgent identification number.
Preferably, in above-mentioned urgent call call-back method, the IMS emergency telephone numbers include：110th, 119,120 and 112.
The present invention more provides a kind of urgent call call-back system, including：
One proxy call conversation control function entity, for receiving the IMS emergency call requests initiated by corresponding one IMS emergency telephone numbers of common number call by a user equipment, one urgent identification number is formed according to the IMS emergency telephone numbers and common number, and the urgent identification number is forwarded to into emergency call session control function entity, and corresponding described common number is obtained according to the calling callback number, directly call the user equipment corresponding with the common number；
One emergency call session control function entity, for receiving the described urgent identification number that the proxy call conversation control function entity sends, and sends to an application server, and receives the calling callback number；
One urgency communication accepts center, for dialing a calling callback number, to initiate a calling callback request；And
One application server, the urgent identification number is sent to the urgency communication and accepts center, and receive the calling callback request, and the calling callback number is judged, when the calling callback number is the urgent identification number, the calling callback number is sent to the emergency call session control function entity.
Preferably, in above-mentioned urgent call call-back system, the urgent identification number includes the IMS emergency telephone numbers and common number, and the head of the urgent identification number is the IMS emergency telephone numbers, and the afterbody of the urgent identification number is the common number.
Preferably, in above-mentioned urgent call call-back system, the application server judges the calling callback number for the urgent identification number according to the head for calling callback number.
Preferably, in above-mentioned urgent call call-back system, when the head of the calling callback number includes the IMS emergency telephone numbers, the calling callback number is the urgent identification number.
In the Emmergency call method, urgent call call-back method and system that the present invention is provided, when user equipment passes through one IMS emergency telephone numbers of a common number call, P-CSCF forms a urgent identification number according to the IMS emergency telephone numbers and common number, the urgent identification number and the common number are stored, and the urgent identification number and common number are sent to a PSAP by an E-CSCF and application server.When the PSAP needs common number described in callback, the PSAP clawbacks one call callback number, the application server is judged to the calling callback number, when the calling callback number is the urgent identification number, no matter the user equipment opens any limit service, the urgent identification number is forwarded directly to the P-CSCF by the E-CSCF across the limit service of the user equipment by the application server, the P-CSCF searches corresponding described common number according to the urgent identification number, directly call the user equipment, ensure the user equipment is got in touch with the most short time.
Description of the drawings
Fig. 1 is the reference frame schematic diagram of existing IMS urgent calls；
Fig. 2 is the flow chart of Emmergency call method in the embodiment of the present invention；
Fig. 3 is the structural representation of urgent call call-back system in the embodiment of the present invention；
Fig. 4 is the flow chart of urgent call call-back method in the embodiment of the present invention；
In figure：201-PSAP；202-P-CSCF；203-E-CSCF；204-VoLTE AS.
Specific embodiment
The specific embodiment of the present invention is described in more detail below in conjunction with schematic diagram.According to description below and claims, advantages and features of the invention will become apparent from.It should be noted that, accompanying drawing in the form of simplifying very much and uses non-accurately ratio, only to purpose that is convenient, lucidly aiding in illustrating the embodiment of the present invention.
A kind of Emmergency call method is provided in the embodiment of the present invention, as shown in Fig. 2 comprising the following steps：
S100：One user equipment passes through one IMS emergency telephone numbers of a common number call, to initiate an IMS emergency call requests.
The user equipment includes the user terminal based on IMS, such as mobile phone etc..The user equipment is not limited to the user terminal based on IMS, can also be other-end, as long as can be compatible with IMS.
In China, the IMS emergency telephone numbers including but not limited to 110,120,112 and 119.911 are included but is not limited in the U.S..In the present embodiment, with the IMS emergency telephone numbers as 110, when the IMS emergency telephone numbers be other numbers when, its processing procedure with for 110 when it is identical, will not be described here.
S200：One proxy call conversation control function entity receives the IMS emergency call requests, forms a urgent identification number according to the common number and IMS emergency telephone numbers, and the urgent identification number is sent to an emergency call session control function entity.
Specifically, as the proxy call conversation control function entity (P-CSCF, Proxy Call Session Control Function) receive the IMS emergency call requests after, the P-CSCF forms a urgent identification number according to the IMS emergency telephone numbers and the common number.Specifically, the urgent identification number includes the common number and the IMS emergency telephone numbers, and the IMS emergency telephone numbers are the head of the urgent identification number, and the common number is the afterbody of the urgent identification number.Assume that the common number is 13966669999, the IMS emergency telephone numbers are 110, then the urgent identification number is 11013966669999.
The P-CSCF stores the urgent identification number 11013966669999 and common number 13966669999, and the one-to-one relationship set up between the urgent identification number 11013966669999 and common number 13966669999.
Then, the urgent identification number 11013966669999 is forwarded to the emergency call session control function entity (E-CSCF, Emergency Session Control Function) by the P-CSCF.
S300：The emergency call session control function entity sends the urgent identification number and common number to a urgency communication and accepts center.
After the E-CSCF receives the urgent identification number 11013966669999 and common number 13966669999, first the urgent identification number 11013966669999 and common number 13966669999 are sent to an application server (VoLTE AS).
Urgent identification number 11013966669999 and common number 13966669999 described in the application server for storage, and route to the PSAP (PSAP, Public Safety Answering Point).
After the PSAP receives the urgent identification number 11013966669999 and common number 13966669999, the urgent identification number 11013966669999 will be stored, in case clawback when needing.When thus resulting in this urgent call dropped calls due to network reason or signal original, the PSAP it should be understood that more information and during clawback, directly call the urgent identification number 11013966669999, no matter which kind of setting is carried out to incoming call using the user equipment of the common number 13966669999, such as call blocking function setting or Call Forwarding Unconditional are arranged, the common number 13966669999 can be directly called, rescue efficiency is improve.
Present invention also offers a kind of urgent call call-back system, as shown in figure 3, the urgent call call-back system includes：Urgency communication accepts center (PSAP, Public Safety Answering Point) 201, proxy call conversation control function entity (P-CSCF, Proxy Call Session Control Function) 202, emergency call session control function entity (E-CSCF, Emergency Session Control Function) 203 and application server (VoLTEAS) 204.
Specifically, the P-CSCF202 is used to receive the IMS emergency call requests initiated by corresponding one IMS emergency telephone numbers of common number call by a user equipment, one urgent identification number is formed according to the IMS emergency telephone numbers and the common number, and the urgent identification number is forwarded to into the E-CSCF203, and corresponding described common number, direct calling to the user equipment are obtained according to the calling callback number；
The E-CSCF203 is used to receive the described urgent identification number that the P-CSCF202 sends, and sends to an application server VoLTE AS204, and receives the calling callback number；
The PSAP201 is used for place calls callback number, so as to initiate a calling callback request；And
The application server 204 sends the urgent identification number to the PSAP201, and receives the calling callback request, when the calling callback number is judged for the urgent identification number, the calling callback number is sent to the E-CSCF203.
Its concrete implementation method is as shown in figure 4, comprise the following steps：
Step S1：User equipment passes through a common number call with IMS emergency telephone numbers, to initiate an IMS emergency call requests.
In China, the IMS emergency telephone numbers including but not limited to 110,120,112 and 119.911 are included but is not limited in the U.S..In the present embodiment, with the IMS emergency telephone numbers as 110, when the IMS emergency telephone numbers be other numbers when, its processing procedure with for 110 when it is identical, will not be described here.
Step S2：One proxy call conversation control function entity receives the IMS emergency call requests, one urgent identification number is formed according to the common number and IMS emergency telephone numbers, the urgent identification number and common number are stored, and the urgent identification number is forwarded to into emergency call session control function entity.
After the P-CSCF receives the IMS emergency call requests, the P-CSCF forms a urgent identification number according to the IMS emergency telephone numbers and common number.Specifically, the urgent identification number includes the common number and IMS emergency telephone numbers, and the IMS emergency telephone numbers are the head of the urgent identification number, and the common number is the afterbody of the urgent identification number.Assume that the common number is 13966669999, the IMS emergency telephone numbers are 110, then the urgent identification number is 11013966669999.
The P-CSCF stores the urgent identification number 11013966669999 and common number 13966669999, and the one-to-one relationship set up between the urgent identification number 11013966669999 and common number 13966669999.
Then, the urgent identification number 11013966669999 is forwarded to the emergency call session control function entity E-CSCF by the P-CSCF.
Step S3：The emergency call session control function entity carries the urgent identification number and the common number is routed to an application server.
After the E-CSCF receives the urgent identification number 11013966669999 and common number 13966669999, the urgent identification number 11013966669999 and common number 13966669999 are routed to into the application server.
Step S4：Urgent identification number and common number described in the application server for storage, and be routed to a urgency communication and accept center.After the application server receives the urgent identification number 11013966669999 and the common number 13966669999, the urgent identification number 11013966669999 and the common number 13966669999 are stored, and is routed to the PSAPPSAP.
Step S5：PSAP user equipmenies according to the direct callback of the urgent identification number.
Concrete step is as follows：
Step S51：The PSAP dials a calling callback number, to initiate a calling callback request, and is routed to the application server.
Step S52：The application server receives the calling callback request, judges that the calling callback number, for the urgent identification number, the urgent identification number is sent to the E-CSCF.
When the application server receives the calling callback request, need to judge the calling callback number.Specifically, judge whether the head for calling callback number is the IMS emergency telephone numbers, that is to say, that judge whether the head for calling callback number is 110 in the present embodiment.When the head of the calling callback number is 110, then explanation calling callback number is the urgent identification number, then the urgent identification number 11013966669999 is forwarded directly to the E-CSCF.
Step S53：After the E-CSCF receives the urgent identification number 11013966669999, the urgent identification number 11013966669999 is sent to the P-CSCF.
Step S54：The P-CSCF searches corresponding described common number, direct calling to the user equipment according to the urgent identification number.
After the P-CSCF receives the urgent identification number 11013966669999, lookup is stored on the P-CSCF and the described common number 13966669999 corresponding to the urgent identification number 11013966669999, and passes through user equipment described in 13966669999 direct clawback of the common number.Avoid the restriction due to the user equipment to incoming call to arrange and lead to not the problem of clawback.That is, no matter which kind of setting the user equipment carries out to incoming call, such as call blocking function setting or Call Forwarding Unconditional arrange, can directly call the common number, improve rescue efficiency.
To sum up, in urgent call call-back method provided in an embodiment of the present invention and system, when user equipment passes through one IMS emergency telephone numbers of a common number call, P-CSCF forms a urgent identification number according to the IMS emergency telephone numbers and common number, the urgent identification number and the common number are stored, and the urgent identification number and common number are sent to a PSAP by an E-CSCF and application server.When the PSAP needs common number described in callback, the PSAP clawbacks one call callback number, the application server is judged to the calling callback number, when the calling callback number is the urgent identification number, no matter the user equipment opens any limit service, the urgent identification number is forwarded directly to the P-CSCF by the E-CSCF across the limit service of the user equipment by the application server, the P-CSCF searches corresponding described common number according to the urgent identification number, directly call the user equipment, ensure the user equipment is got in touch with the most short time.
The preferred embodiments of the present invention are above are only, any restriction effect is not played to the present invention.Any person of ordinary skill in the field; in the range of without departing from technical scheme; to the invention discloses technical scheme and technology contents make any type of equivalent or modification etc. variation; belong to the content without departing from technical scheme, still fall within protection scope of the present invention.
Claims (20)
1. a kind of Emmergency call method, it is characterised in that comprise the following steps：
One user equipment dials an IMS emergency telephone numbers by a common number, urgent to initiate an IMS
Call request；
One proxy call conversation control function entity receives the IMS emergency call requests, according to described common
Number and IMS emergency telephone numbers form a urgent identification number, and by the urgent identification number send to
One emergency call session control function entity；
The emergency call session control function entity sends the urgent identification number and common number to one
Urgency communication accepts center.
2. Emmergency call method as claimed in claim 1, it is characterised in that the agent call session control
After functional entity processed forms a urgent identification number, the urgent identification number and common number are stored.
3. urgent call call-back method as claimed in claim 1, it is characterised in that the urgent call meeting
Words control function entity sends the urgent identification number and common number to a urgency communication and accepts center
Process includes：
The emergency call session control function entity carries the urgent identification number and common number route
To an application server；And
Urgent identification number and common number described in the application server for storage, and be routed to described urgent logical
Letter accepts center.
4. Emmergency call method as claimed in claim 1, it is characterised in that the urgent identification number bag
Containing the common number and IMS emergency telephone numbers.
5. Emmergency call method as claimed in claim 4, it is characterised in that the IMS urgent calls number
Code bit is located at the afterbody of the urgent identification number in the head of the urgent identification number, the common number.
6. urgent call call-back method as claimed in claim 1, it is characterised in that the IMS is promptly exhaled
Code of calling out the numbers includes：110th, 119,120 and 112.
7. a kind of urgent call call-back method, it is characterised in that comprise the following steps：
One user equipment dials an IMS emergency telephone numbers by a common number, urgent to initiate an IMS
Call request；
One proxy call conversation control function entity receives the IMS emergency call requests, according to described common
Number and IMS emergency telephone numbers form a urgent identification number, and by the urgent identification number send to
One emergency call session control function entity；
The emergency call session control function entity sends the urgent identification number and common number to one
Urgency communication accepts center；
The urgency communication accepts center user equipment according to the direct callback of the urgent identification number.
8. urgent call call-back method as claimed in claim 7, it is characterised in that the agent call meeting
After words control function entity forms a urgent identification number, the urgent identification number and common number are stored.
9. urgent call call-back method as claimed in claim 7, it is characterised in that the urgent call meeting
Words control function entity sends the urgent identification number and common number to a urgency communication and accepts center
Process includes：
The emergency call session control function entity carries the urgent identification number and common number is routed to
One application server；And
Urgent identification number and common number described in the application server for storage, and be routed to described urgent logical
Letter accepts center.
10. urgent call call-back method as claimed in claim 9, it is characterised in that the urgency communication
Accepting center includes the step of user equipment according to the urgent identification number callback：
The urgency communication accepts center and dials a calling callback number, to initiate a calling callback request, and
It is routed to the application server；
The application server receives the calling callback request, judges the calling callback number for described
Urgent identification number, the urgent identification number is sent to the proxy call conversation control function entity；
The proxy call conversation control function entity searches corresponding institute according to the urgent identification number
State common number, directly call the user equipment corresponding with the common number.
11. urgent call call-back methods as claimed in claim 10, it is characterised in that the application service
The step of device sends the urgent identification number to the proxy call conversation control function entity includes：
The application server sends the urgent identification number to the emergency call session control function reality
Body；
The emergency call session control function entity receives the urgent identification number, and sends to described
Proxy call conversation control function entity.
12. urgent call call-back methods as claimed in claim 10, it is characterised in that take in the application
Business device receives the calling callback request, judges that the calling callback number is the urgent identification number
In step, judge the calling callback number for the urgent mark according to the head of the calling callback number
Number.
13. urgent call call-back methods as claimed in claim 12, it is characterised in that call back when described
When wailing the head of code comprising the IMS emergency telephone numbers, the calling callback number is the urgent mark
Know number.
14. urgent call call-back methods as claimed in claim 7, it is characterised in that the urgent mark
Number includes the common number and the IMS emergency telephone numbers.
15. urgent call call-back methods as claimed in claim 14, it is characterised in that the IMS is urgent
Call number is located at the head of the urgent identification number, and the common number is located at the urgent identification number
Afterbody.
16. urgent call call-back methods as claimed in claim 7, it is characterised in that the IMS is urgent
Call number includes：110th, 119,120 and 112.
17. a kind of urgent call call-back systems, it is characterised in that include：
One proxy call conversation control function entity, for receiving a user equipment by corresponding common
Number dials the IMS emergency call requests initiated by an IMS emergency telephone numbers, according to the IMS
Emergency telephone number and common number form a urgent identification number, and the urgent identification number is forwarded to
Emergency call session control function entity, and according to the calling callback number acquisition is corresponding
Common number, directly calls the user equipment corresponding with the common number；
One emergency call session control function entity, for receiving the proxy call conversation control function entity
The described urgent identification number for sending, and send to an application server, and receive the calling callback number
Code；
One urgency communication accepts center, for dialing a calling callback number, to initiate a calling callback request；
And
One application server, the urgent identification number is sent to the urgency communication and accepts center, and
The calling callback request is received, and the calling callback number is judged, when the calling callback number
When code is the urgent identification number, the calling callback number is sent to the emergency call session and is controlled
Functional entity.
18. urgent call call-back systems as claimed in claim 17, it is characterised in that the urgent mark
Number includes the IMS emergency telephone numbers and common number, and the head of the urgent identification number is described
IMS emergency telephone numbers, the afterbody of the urgent identification number is the common number.
19. urgent call call-back systems as claimed in claim 17, it is characterised in that the application service
Device judges the calling callback number for the urgent identification number according to the head for calling callback number
Code.
20. urgent call call-back systems as claimed in claim 19, it is characterised in that the calling callback
When the head of number includes the IMS emergency telephone numbers, the calling callback number is the urgent mark
Number.
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