CN102281517B - Non-voice emergency call control method, IP multimedia subsystem and P-CSCF (Proxy Call Session Control Function) - Google Patents

Non-voice emergency call control method, IP multimedia subsystem and P-CSCF (Proxy Call Session Control Function) Download PDF

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Publication number
CN102281517B
CN102281517B CN201010207697.1A CN201010207697A CN102281517B CN 102281517 B CN102281517 B CN 102281517B CN 201010207697 A CN201010207697 A CN 201010207697A CN 102281517 B CN102281517 B CN 102281517B
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China
Prior art keywords
cscf
information
voice
urgent call
subscription
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Chinese (zh)
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CN102281517A (en
Inventor
李世涛
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ZTE Corp
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ZTE Corp
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Priority to CN201010207697.1A priority Critical patent/CN102281517B/en
Priority to PCT/CN2011/074188 priority patent/WO2011157093A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42382—Text-based messaging services in telephone networks such as PSTN/ISDN, e.g. User-to-User Signalling or Short Message Service for fixed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
    • H04M3/5116—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing for emergency applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer

Abstract

The invention relates to a non-voice emergency call control method, an IP multimedia subsystem and a P-CSCF (Proxy Call Session Control Function). The non-voice emergency call control method comprises the steps: the P-CSCF acquires and stores non-voice emergency call subscription information of a terminal; and when the terminal initiates a non-voice emergency call, the P-CSCF judges whether the terminal subscribes the non-voice emergency call or not according to the stored subscription information, if so, allowing the non-voice emergency call to be continuously carried out, and if not, rejecting a request on the non-voice emergency call. The method, the system and the P-CSCF in the invention can be used for realizing control on the non-voice emergency call.

Description

The control method of non-voice urgent call, IP Multimedia System and P-CSCF
Technical field
The present invention relates to the communications field, relate more specifically in a kind of IP Multimedia System, the control method of non-voice urgent call, IP Multimedia System and Proxy Call Session Control Function.
Background technology
Existing emergence call service just for speech business, namely dials voice call to an emergency telephone number.But in some special situation, be such as in danger, it is impossible for dialing voice call warning, is also more dangerous.Also have some problems of having spoken, or the problematic crowd of hearing, when they are in emergency, when needing same emergency centers contact, dependence voice call, concerning being also very difficult them.
So people wish to utilize the service of non-voice class to realize urgent call, such as send a short message of reporting to the police to EC, present case and demand are all write in short message, such EC just can come according to the urgent message received for user's service.
Pass through short message, the non-voice such as message or text media realize urgent call, it is an application of non-voice urgent call, but in other cases, such as EC needs alarm people to provide the information of the more multiple dried rhizome of rehmannia, can also require that alarm people provides the media information such as video or picture, these are all called non-voice urgent call.
In order to realize non-voice urgent call, first require that EC can support the media of non-voice, but the urgent call of a large amount of EC support voice of having disposed at present, if will to public safety answering center (PSAP all in network, Public Safety Answering Point) to upgrade, this will be a more complicated and very slow process.So when concrete enforcement, in present stage, non-voice urgent call is only required the user of this business of partly having contracted open, for the user not having this business signing, network thinks that it should carry out voice urgent call, and when not having the user of this business signing to initiate non-voice urgent call, network can inform that its business is limited, and refuse its request, require that it initiates the urgent call of voice.
Fig. 1 is existing IMS (IP Multimedia Core Network Subsystem, IP Multimedia System) realize the Organization Chart of urgent call, wherein comprise user equipment (UE) (User Equipment, subscriber equipment) 101, P-CSCF (Proxy Call Session Control Function, proxy CSCF) 102, when P-CSCF 102 receives a request message time, by judging message request, know whether this message request is an emergency call request, if an emergency call request, then P-CSCF 102 directly by this emergency call request route to the E-CSCF (Emergency-CSCF of current network, emergence call service CSCF) 105 process, E-CSCF 105 is again according to the positional information of user, inquire about a suitable PSAP 106 to serve to user.For P-CSCF 102, if the solicited message received is not emergency call request, then call request is routed to user attaching network by P-CSCF 102, and this call request is sent to S-CSCF (the Serving Call Session ControlFunction into user distributes, serving CSCF) on 103, S-CSCF 103 can to HSS (Home Subscriber Server, home subscriber server) subscription data of 104 inquiring users, and judge the legitimacy of this request.
Fig. 2 is that user initiates the flow chart of registration in IMS network, simplifies the flow processs such as network security certification in this figure:
When user is after IMS network succeeds in registration, just had the data message of this user in network, these data messages comprise basic personal information and the signing service information of user,
201, user UE initiate a registration request to its IMS access point P-CSCF;
202, by S-CSCF query function, network is that user distributes a S-CSCF for its service, thus makes this registration request be routed on this S-CSCF;
203, S-CSCF is inquiring user data in HSS;
204, HSS can return to S-CSCF the user data inquired, and these data only include the log-on message of user, such as implicitly registered set information;
205, after this user's success of network authentication, S-CSCF returns 200OK response, comprising the part log-on message of user, such as implicitly registered set information to user;
206, P-CSCF can preserve the S-CSCF information of user, and the log-on message of user.
207, after succeeding in registration, P-CSCF can initiate subscribe request to the S-CSCF of this user, and booking reader registers relevant information;
208, S-CSCF judges that ordered by P-CSCF, user succeeds in registration, then receive the subscribe request of P-CSCF, to its time 200OK response;
209, after user's registration information sends change, the public user identity in such as certain implicitly registered set is unavailable, and up-to-date user data can be told S-CSCF by HSS;
210, after S-CSCF receives up-to-date user data, send NOTIFY notification message to P-CSCF, tell P-CSCF by up-to-date user data.
After the notified message of 211, P-CSCF, return 200OK response to network.
The log-on message of the just user of P-CSCF preservation here, does not comprise the information such as the signing service of user.
Fig. 3 is the simplified flow chart that in prior art, user makes a call:
301, user initiates a service request, and this request can be a message related to calls, also can be a classes of messages request;
This service request is sent on S-CSCF by 302, P-CSCF;
303, S-CSCF is to the data of HSS inquiring user signing service;
Whether whether 304, HSS returns the CAMEL-Subscription-Information of user to S-CSCF, comprise business and contract, have permission and initiate this request etc.;
305a, S-CSCF, by judging the user data returned, when finding that the service request of user is illegal, refuses this service request, service request is illegal may be because not signing this kind of business of this user, or does not have enough remaining sums to initiate this business etc. in account.
The response of refusal business is returned to user UE by 306a, P-CSCF;
305b, if it is legal that the data that in step 304, HSS returns show that user initiates this service request, then this service request is sent to called subscriber's network by S-CSCF, sends to called subscriber by called subscriber's network;
306b ~ 308b, when this request of called subscriber answer, then sends 200OK response, even if now business has been successfully established to calling subscriber UE;
Can find from above prior art flow process, only has CAMEL-Subscription-Information HSS saving user in a network, although user after the registration is finished, P-CSCF can to the data of network subscribes user, but these data only include the basic log-on data of user, such as this user has how many public user identity, belongs to which implicitly registered set etc., and user is not to the signing situation of business.
But from the urgent call framework of Fig. 1, no matter be the urgent call of voice or the urgent call of non-voice, its basic demand is all local directly process, namely after P-CSCF receives a request, if judge that this is a urgent call, then this request directly sends to the E-CSCF of current network to go process by P-CSCF.When user initiates a non-voice urgent call time, P-CSCF now can not know the non-voice emergence call service whether this user contracts, thus P-CSCF may be caused the Wrong control of non-voice emergence call service.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of control method of non-voice urgent call, IP Multimedia System and Proxy Call Session Control Function, with the real control to non-voice urgent call.
For solving above technical problem, the invention provides a kind of control method of non-voice urgent call, the method comprises:
Proxy Call Session Control Function (P-CSCF) is known and is preserved the non-voice urgent call CAMEL-Subscription-Information of terminal;
When terminal initiates non-voice urgent call, described P-CSCF judges the whether signing non-voice urgent call of this terminal according to the CAMEL-Subscription-Information preserved, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
Further, described P-CSCF knows that the step of non-voice urgent call CAMEL-Subscription-Information specifically comprises:
Home subscriber server (HSS) is to the non-voice urgent call CAMEL-Subscription-Information of service call conversation control function (S-CSCF) transmitting terminal;
Described S-CSCF receives and sends the non-emergency call CAMEL-Subscription-Information of described terminal to described P-CSCF.
Further, described HSS specifically refers to the non-voice urgent call CAMEL-Subscription-Information of described S-CSCF transmitting terminal, when described endpoint registration, described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF.
Further, described HSS specifically refers to the non-voice urgent call CAMEL-Subscription-Information of described S-CSCF transmitting terminal, when described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF;
Described S-CSCF receives and specifically comprises to the non-emergency call CAMEL-Subscription-Information that described P-CSCF sends described terminal: after endpoint registration success, described P-CSCF sends subscribe request to described S-CSCF, sets up subscribing relationship with described S-CSCF; Described non-voice urgent call CAMEL-Subscription-Information is sent according to described subscribing relationship to described P-CSCF after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information.
Further, described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
For solving above technical problem, present invention also offers a kind of control method of non-voice urgent call, the method comprises:
The non-voice urgent call CAMEL-Subscription-Information of terminal is sent to Proxy Call Session Control Function (P-CSCF) by service call conversation control function (S-CSCF) by home subscriber server (HSS);
Described P-CSCF receives and preserves the non-voice urgent call CAMEL-Subscription-Information of terminal;
When terminal initiates non-voice urgent call, described P-CSCF judges the whether signing non-voice urgent call of this terminal according to the CAMEL-Subscription-Information preserved, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
Further, the non-voice urgent call CAMEL-Subscription-Information of terminal sends to described P-CSCF specifically to comprise by described S-CSCF by described HSS:
When described endpoint registration, described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF; Described S-CSCF sends the CAMEL-Subscription-Information of non-emergency call again to described P-CSCF.
Further,
The non-voice urgent call CAMEL-Subscription-Information of terminal sends to described P-CSCF specifically to comprise by described S-CSCF by described HSS:
After endpoint registration success, when described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF; The subscribing relationship that after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information, basis and described P-CSCF set up sends described non-voice urgent call CAMEL-Subscription-Information to described P-CSCF.
Further, described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
Further, allow non-voice urgent call to proceed to refer to, P-CSCF directly by this non-voice emergency call request route to E-CSCF; Suitable PSAP is given by this non-voice emergency call request route by E-CSCF; Reply after PSAP receives this request.
Further, refuse this non-voice emergency call request and specifically comprise: refuse this request, and inform terminal failure cause, require that terminal sends voice urgent call.
For solving above technical problem, present invention also offers a kind of Proxy Call Session Control Function, described Proxy Call Session Control Function (P-CSCF) comprises information and knows module, for knowing and preserving the non-voice urgent call CAMEL-Subscription-Information of terminal;
Non-voice urgent call control module, for when terminal initiates non-voice urgent call, according to the CAMEL-Subscription-Information preserved, the whether signing non-voice urgent call of this terminal is judged, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
Further, described information know module know the mode of non-voice urgent call CAMEL-Subscription-Information be following any one:
Being inquired about from home subscriber server (HSS) by service call conversation control function (S-CSCF) during described endpoint registration backwardly sends to described information to know module;
After described endpoint registration success, described information knows that module and described S-CSCF set up subscribing relationship, and described S-CSCF sends to described information to know module according to described subscribing relationship after knowing the non-voice urgent call CAMEL-Subscription-Information of described terminal.
For solving above technical problem, present invention also offers a kind of IP Multimedia System, this system is used for realizing non-voice urgent call, and this system comprises:
Home subscriber server (HSS), for the non-voice urgent call CAMEL-Subscription-Information to service call conversation control function (S-CSCF) transmitting terminal;
Described S-CSCF, for receiving and sending the non-emergency call CAMEL-Subscription-Information of described terminal to Proxy Call Session Control Function (P-CSCF);
Described P-CSCF, for receiving and preserving the non-voice urgent call CAMEL-Subscription-Information of terminal; Also for when terminal initiates non-voice urgent call, according to the CAMEL-Subscription-Information preserved, the whether signing non-voice urgent call of this terminal is judged, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
Further, described S-CSCF also for when described endpoint registration, to described HSS inquiry request; Described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF.
Further, when described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF;
Described P-CSCF also for after endpoint registration success, sends subscribe request to described S-CSCF, sets up subscribing relationship with described S-CSCF; Described non-voice urgent call CAMEL-Subscription-Information is sent according to described subscribing relationship to described P-CSCF after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information.
Further, described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
By Proxy Call Session Control Function (P-CSCF) when endpoint registration or after endpoint registration success after signing non-voice emergence call service in the present invention, know non-voice urgent call CAMEL-Subscription-Information, when terminal initiates non-voice urgent call, judge whether to allow this terminal to initiate non-voice urgent call according to the CAMEL-Subscription-Information known, thus realize the control to non-voice urgent call.
Accompanying drawing explanation
Fig. 1 be known urgent call realize Organization Chart;
Fig. 2 is that known user registers, subscribes to flow chart;
Fig. 3 is the flow chart of user's initiating business request;
Fig. 4 is the schematic diagram of the control method of non-voice urgent call of the present invention;
Fig. 5 is the another schematic diagram of the control method of non-voice urgent call of the present invention;
Fig. 6 is that the present invention passes through to register and realizes the flow chart that network issues whether signing non-voice emergency call information;
Fig. 7 realizes by subscribing to the flow chart that network issues non-voice emergency call information of whether contracting;
Fig. 8 is that P-CSCF allows terminal to initiate the embodiment of non-voice urgent call;
Fig. 9 is the embodiment that P-CSCF refuses that terminal initiates non-voice urgent call.
Embodiment
Main thought of the present invention is, by Proxy Call Session Control Function (P-CSCF) when endpoint registration or after endpoint registration success after signing non-voice emergence call service, know non-voice urgent call CAMEL-Subscription-Information, when terminal initiates non-voice urgent call, judge whether to allow this terminal to initiate non-voice urgent call according to the CAMEL-Subscription-Information known, thus realize the control to non-voice urgent call.
As shown in Figure 4, the control method of non-voice urgent call of the present invention comprises:
Step 401: Proxy Call Session Control Function (P-CSCF) is known and preserved the non-voice urgent call CAMEL-Subscription-Information of terminal;
Step 401 specifically comprises:
401a, home subscriber server (HSS) is to the non-voice urgent call CAMEL-Subscription-Information of service call conversation control function (S-CSCF) transmitting terminal;
Described HSS specifically refers to the non-voice urgent call CAMEL-Subscription-Information of described S-CSCF transmitting terminal, when described endpoint registration, described HSS returns the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal to described S-CSCF according to the inquiry of described S-CSCF.
401b, described S-CSCF receive and send the non-emergency call CAMEL-Subscription-Information of described terminal to described P-CSCF.
In another kind of implementation, described HSS specifically refers to the non-voice urgent call CAMEL-Subscription-Information of described S-CSCF transmitting terminal, when described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF;
Described S-CSCF receives and specifically comprises to the non-emergency call CAMEL-Subscription-Information that described P-CSCF sends described terminal: after endpoint registration success, described P-CSCF sends subscribe request to described S-CSCF, sets up subscribing relationship with described S-CSCF; Described non-voice urgent call CAMEL-Subscription-Information is sent according to described subscribing relationship to described P-CSCF after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information.
Step 402: when terminal initiates non-voice urgent call, described P-CSCF judges the whether signing non-voice urgent call of this terminal according to the CAMEL-Subscription-Information preserved, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
The inventive method can also be described as, and the control method of non-voice urgent call of the present invention comprises:
501, the non-voice urgent call CAMEL-Subscription-Information of terminal is sent to Proxy Call Session Control Function (P-CSCF) by service call conversation control function (S-CSCF) by home subscriber server (HSS);
Step 501 has two kinds of implementations,
Mode one: when described endpoint registration, described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF; Described S-CSCF sends the CAMEL-Subscription-Information of non-emergency call again to described P-CSCF;
Mode two: after endpoint registration success, when described HSS regularly or the user data information of terminal changes, sends to described S-CSCF by the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal; The subscribing relationship that after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information, basis and described P-CSCF set up sends described non-voice urgent call CAMEL-Subscription-Information to described P-CSCF.
502, described P-CSCF receive and preserve the non-voice urgent call CAMEL-Subscription-Information of terminal;
503, when terminal initiates non-voice urgent call, described P-CSCF judges, as signing the whether signing non-voice urgent call of this terminal according to the CAMEL-Subscription-Information preserved, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
In the present invention, described non-voice urgent call CAMEL-Subscription-Information can adopt the form in SIP head territory or XML body to represent in the mode of mark.
Allow non-voice urgent call to proceed to refer to, P-CSCF directly by this non-voice emergency call request route to E-CSCF; Suitable PSAP process is given by this non-voice emergency call request route by E-CSCF; Reply after PSAP receives this request.
Refuse this non-voice emergency call request specifically to comprise: refuse this request, and inform terminal failure cause, require that terminal sends voice urgent call.
Embodiment one
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Fig. 6 is the flow chart that P-CSCF knows non-voice urgent call CAMEL-Subscription-Information in registration process, and its concrete steps are as follows:
601, terminal UE initiates registration request;
602, according to the S-CSCF distribution method of network, registration request is sent to S-CSCF by P-CSCF;
603, S-CSCF is to HSS inquiring user data message;
User data information is returned to S-CSCF by 604, HSS, comprising the mark of this endpoint registration information and whether signing non-voice urgent call;
605, after this user of S-CSCF certification is legal, agree to that it is registered, then send 200OK response to P-CSCF, comprising the log-on message of terminal and the mark of non-voice urgent call of whether contracting.
This mark can be the form in a SIP head territory, or expands the parameter of certain existing header field, and one section of XML body also can be used to represent;
After 606, P-CSCF receives this 200OK response, from 200OK response, know the log-on message of user and the information of non-voice urgent call of whether contracting, and preserved, 200OK response is transmitted to user UE simultaneously.
Fig. 7 is, P-CSCF knows the embodiment of non-voice urgent call CAMEL-Subscription-Information by the mode of subscribing to, and it comprises the following steps:
701 ~ 706, be user's register flow path figure of a standard, with step 201 ~ 206 in Fig. 2;
707, when after endpoint registration success, P-CSCF initiates the subscribe request of this terminal to network;
708, S-CSCF judges whether the terminal of invitation subscription succeeds in registration, and when knowing this terminal after successful registration, sending 200OK response, receive this subscribe request to P-CSCF, thus makes P-CSCF and S-CSCF establish subscribing relationship about this terminal;
709, HSS informs this terminal non-voice urgent call CAMEL-Subscription-Information of S-CSCF;
HSS regularly sends or sends user data information when terminal unit contractual information change to S-CSCF, comprising the non-voice urgent call CAMEL-Subscription-Information of terminal.
710, after subscribing relationship establishes, S-CSCF can send notice NOTIFY to P-CSCF, wherein includes the log-on message of terminal, includes the information of the whether signing non-voice urgent call of this terminal simultaneously;
After 711, P-CSCF receives this notification message, the information of the log-on data of terminal and non-voice urgent call of whether contracting is preserved, and sends 200OK response to S-CSCF.
Embodiment three
Fig. 8 is the flow chart that terminal initiates non-voice urgent call, comprising:
801, when user is on the line, need initiation urgent call, UE selects the urgent call that have sent a non-voice;
802, after P-CSCF receives this non-voice emergency call request, the request of user is judged;
803, finding that this user is signing has non-voice emergence call service, P-CSCF directly by this non-voice emergency call request route to E-CSCF;
804, give suitable PSAP by E-CSCF by this non-voice emergency call request route;
805 ~ 807, PSAP replys it after receiving this request, sends 200OK response to user UE, then call setup success.
Fig. 9 is another flow chart that user sends non-voice urgent call:
901, when user is on the line, need initiation urgent call, UE selects the urgent call that have sent a non-voice;
902, after P-CSCF receives this non-voice emergency call request, the request of user is judged;
903, when P-CSCF judges the signing non-voice emergence call service of this user, directly this request of refusal, and inform user's failure cause, require that user sends voice urgent call.
For realizing above method, the present invention also provides a kind of IP Multimedia System, and this system is used for realizing non-voice urgent call, and this system comprises:
Home subscriber server (HSS), for the non-voice urgent call CAMEL-Subscription-Information to service call conversation control function (S-CSCF) transmitting terminal;
Described S-CSCF, for receiving and sending the non-emergency call CAMEL-Subscription-Information of described terminal to Proxy Call Session Control Function (P-CSCF);
Described P-CSCF, for receiving and preserving the non-voice urgent call CAMEL-Subscription-Information of terminal; Also for when terminal initiates non-voice urgent call, according to the CAMEL-Subscription-Information preserved, the whether signing non-voice urgent call of this terminal is judged, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
Described S-CSCF also for when described endpoint registration, to described HSS inquiry request; Described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF.
When described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF; Described P-CSCF also for after endpoint registration success, sends subscribe request to described S-CSCF, sets up subscribing relationship with described S-CSCF; Described non-voice urgent call CAMEL-Subscription-Information is sent according to described subscribing relationship to described P-CSCF after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information.
Described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
Present invention also offers a kind of Proxy Call Session Control Function, described Proxy Call Session Control Function (P-CSCF) comprises information and knows module, for knowing and preserving the non-voice urgent call CAMEL-Subscription-Information of terminal;
Non-voice urgent call control module, for when terminal initiates non-voice urgent call, according to the CAMEL-Subscription-Information preserved, the whether signing non-voice urgent call of this terminal is judged, as signing, then allow non-voice urgent call to proceed, otherwise refuse this non-voice emergency call request.
Described information know module know the mode of non-voice urgent call CAMEL-Subscription-Information be following any one:
Being inquired about from home subscriber server (HSS) by service call conversation control function (S-CSCF) during described endpoint registration backwardly sends to described information to know module;
After described endpoint registration success, described information knows that module and described S-CSCF set up subscribing relationship, and described S-CSCF sends to described information to know module according to described subscribing relationship after knowing the non-voice urgent call CAMEL-Subscription-Information of described terminal.
The above, be only preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Understandably, non-voice urgent call comprises the various different modes such as short message, video, picture, according to the mode of concrete urgent call, process relating to different network elements, such as short message urgent call mode, when E-CSCF receives this short message urgent call, can select first this short message urgent call to be sent to suitable short message service center, by short message service center, this short message urgent call be sent to suitable PSAP.
The present invention focuses on and pays close attention to the control of P-CSCF how to non-voice urgent call.In the present invention, by Proxy Call Session Control Function (P-CSCF) when endpoint registration or after endpoint registration success after signing non-voice emergence call service, know non-voice urgent call CAMEL-Subscription-Information, when terminal initiates non-voice urgent call, judge whether to allow this terminal to initiate non-voice urgent call according to the CAMEL-Subscription-Information known, thus realize the control to non-voice urgent call.
In sum, adopt the inventive method, do not need to make large amendment to existing IMS architecture, only need increase the transmission of CAMEL-Subscription-Information on stream and judge just can realize the control of non-voice urgent call.
The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize.Correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

Claims (17)

1. a control method for non-voice urgent call, is characterized in that, the method comprises:
Proxy Call Session Control Function (P-CSCF) is known and is preserved the non-voice urgent call CAMEL-Subscription-Information of terminal;
When terminal initiates non-voice urgent call, described P-CSCF judges the whether signing non-voice urgent call of this terminal according to the CAMEL-Subscription-Information preserved, as signing, non-voice urgent call is then allowed to proceed, otherwise refuse this non-voice emergency call request, and inform described terminal failure cause.
2. the method for claim 1, is characterized in that, described P-CSCF knows that the step of non-voice urgent call CAMEL-Subscription-Information specifically comprises:
Home subscriber server (HSS) is to the non-voice urgent call CAMEL-Subscription-Information of service call conversation control function (S-CSCF) transmitting terminal;
Described S-CSCF receives and sends the non-emergency call CAMEL-Subscription-Information of described terminal to described P-CSCF.
3. method as claimed in claim 2, it is characterized in that: described HSS specifically refers to the non-voice urgent call CAMEL-Subscription-Information of described S-CSCF transmitting terminal, when described endpoint registration, described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF.
4. method as claimed in claim 2, is characterized in that:
Described HSS specifically refers to the non-voice urgent call CAMEL-Subscription-Information of described S-CSCF transmitting terminal, when described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF;
Described S-CSCF receives and specifically comprises to the non-emergency call CAMEL-Subscription-Information that described P-CSCF sends described terminal: after endpoint registration success, described P-CSCF sends subscribe request to described S-CSCF, sets up subscribing relationship with described S-CSCF; Described non-voice urgent call CAMEL-Subscription-Information is sent according to described subscribing relationship to described P-CSCF after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information.
5. the method for claim 1, is characterized in that: described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
6. a control method for non-voice urgent call, is characterized in that, the method comprises:
The non-voice urgent call CAMEL-Subscription-Information of terminal is sent to Proxy Call Session Control Function (P-CSCF) by service call conversation control function (S-CSCF) by home subscriber server (HSS);
Described P-CSCF receives and preserves the non-voice urgent call CAMEL-Subscription-Information of terminal;
When terminal initiates non-voice urgent call, described P-CSCF judges the whether signing non-voice urgent call of this terminal according to the CAMEL-Subscription-Information preserved, as signing, non-voice urgent call is then allowed to proceed, otherwise refuse this non-voice emergency call request, and inform described terminal failure cause.
7. method as claimed in claim 6, is characterized in that,
The non-voice urgent call CAMEL-Subscription-Information of terminal sends to described P-CSCF specifically to comprise by described S-CSCF by described HSS:
When described endpoint registration, described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF; Described S-CSCF sends the CAMEL-Subscription-Information of non-emergency call again to described P-CSCF.
8. method as claimed in claim 6, is characterized in that,
The non-voice urgent call CAMEL-Subscription-Information of terminal sends to described P-CSCF specifically to comprise by described S-CSCF by described HSS:
After endpoint registration success, when described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF; The subscribing relationship that after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information, basis and described P-CSCF set up sends described non-voice urgent call CAMEL-Subscription-Information to described P-CSCF.
9. method as claimed in claim 6, is characterized in that: described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
10. method as claimed in claim 6, is characterized in that: allow non-voice urgent call to proceed to refer to, P-CSCF directly by this non-voice emergency call request route to E-CSCF; Suitable PSAP is given by this non-voice emergency call request route by E-CSCF; Reply after PSAP receives this request.
11. methods as claimed in claim 6, is characterized in that: refuse this non-voice emergency call request and specifically comprise: refuse this request, and inform terminal failure cause, require that terminal sends voice urgent call.
12. 1 kinds of Proxy Call Session Control Function, is characterized in that,
Described Proxy Call Session Control Function (P-CSCF) comprises information and knows module, for knowing and preserving the non-voice urgent call CAMEL-Subscription-Information of terminal;
Non-voice urgent call control module, for when terminal initiates non-voice urgent call, according to the CAMEL-Subscription-Information preserved, the whether signing non-voice urgent call of this terminal is judged, as signing, non-voice urgent call is then allowed to proceed, otherwise refuse this non-voice emergency call request, and inform described terminal failure cause.
13. Proxy Call Session Control Function as claimed in claim 12, is characterized in that: described information know module know the mode of non-voice urgent call CAMEL-Subscription-Information be following any one:
Being inquired about from home subscriber server (HSS) by service call conversation control function (S-CSCF) during described endpoint registration backwardly sends to described information to know module;
After described endpoint registration success, described information knows that module and described S-CSCF set up subscribing relationship, and described S-CSCF sends to described information to know module according to described subscribing relationship after knowing the non-voice urgent call CAMEL-Subscription-Information of described terminal.
14. 1 kinds of IP Multimedia System, is characterized in that, this system is used for realizing non-voice urgent call, and this system comprises:
Home subscriber server (HSS), for the non-voice urgent call CAMEL-Subscription-Information to service call conversation control function (S-CSCF) transmitting terminal;
Described S-CSCF, for receiving and sending the non-emergency call CAMEL-Subscription-Information of described terminal to Proxy Call Session Control Function (P-CSCF);
Described P-CSCF, for receiving and preserving the non-voice urgent call CAMEL-Subscription-Information of terminal; Also for when terminal initiates non-voice urgent call, according to the CAMEL-Subscription-Information preserved, the whether signing non-voice urgent call of this terminal is judged, as signing, non-voice urgent call is then allowed to proceed, otherwise refuse this non-voice emergency call request, and inform described terminal failure cause.
15. systems as claimed in claim 14, is characterized in that: described S-CSCF also for when described endpoint registration, to described HSS inquiry request; Described HSS returns the user data information of the non-voice urgent call CAMEL-Subscription-Information comprising this terminal to described S-CSCF according to the inquiry of described S-CSCF.
16. systems as claimed in claim 14, is characterized in that:
When described HSS regularly or the user data information of terminal changes, the user data information comprising non-voice urgent call CAMEL-Subscription-Information of this terminal is sent to described S-CSCF;
Described P-CSCF also for after endpoint registration success, sends subscribe request to described S-CSCF, sets up subscribing relationship with described S-CSCF; Described non-voice urgent call CAMEL-Subscription-Information is sent according to described subscribing relationship to described P-CSCF after described S-CSCF receives described non-voice urgent call CAMEL-Subscription-Information.
17. systems as claimed in claim 14, is characterized in that: described non-voice urgent call CAMEL-Subscription-Information adopts mode that is explicit or implicit expression, shows with the parameter in SIP head territory, SIP head territory or XML body surface.
CN201010207697.1A 2010-06-13 2010-06-13 Non-voice emergency call control method, IP multimedia subsystem and P-CSCF (Proxy Call Session Control Function) Expired - Fee Related CN102281517B (en)

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