CN102316077B - The system of selection of public safety answering point, Apparatus and system - Google Patents

The system of selection of public safety answering point, Apparatus and system Download PDF

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Publication number
CN102316077B
CN102316077B CN201010218205.9A CN201010218205A CN102316077B CN 102316077 B CN102316077 B CN 102316077B CN 201010218205 A CN201010218205 A CN 201010218205A CN 102316077 B CN102316077 B CN 102316077B
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China
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urgency traffic
psap
cscf
type
voice
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CN102316077A (en
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李勉
李世涛
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ZTE Corp
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ZTE Corp
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Priority to CN201010218205.9A priority Critical patent/CN102316077B/en
Priority to PCT/CN2011/074773 priority patent/WO2012000359A1/en
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    • 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
    • H04M7/0024—Services and arrangements where telephone services are combined with data services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Engineering & Computer Science (AREA)
  • Emergency Management (AREA)
  • Marketing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of system of selection of public safety answering point, Apparatus and system.The method comprises: E-CSCF receives and is used to indicate the emergent operation request message that UE initiates urgency traffic; E-CSCF, according to emergent operation request message, judges whether the type of urgency traffic is non-voice urgency traffic; If judged result is yes, E-CSCF, according to the type of the non-voice urgency traffic of the positional information of UE and UE, is the PSAP that UE selects to support non-voice urgency traffic.The present invention can ensure to choose the PSAP supporting non-voice urgency traffic, and provides non-voice urgency traffic to serve accordingly for this UE.

Description

The system of selection of public safety answering point, Apparatus and system
Technical field
The present invention relates to the communications field, in particular to system of selection, the Apparatus and system of a kind of public safety answering point (PublicSafetyAnswerPoint, referred to as PSAP).
Background technology
IP Multimedia System (IPMultimediaSubsystem, referred to as IMS) be the core of New Generation of Communication network, its distinguishing feature have employed Session initiation Protocol (SessionInitiationProtocol, referred to as SIP) system, communication is irrelevant with access, and possesses media service control function and be separated with bearing capacity, calling is separated with session, application is separated with service, business and network detach, and the several functions such as mobile network and internet integrated services.
Due to the feature that IMS is irrelevant with access, emergent session (EmergencyCall under IMS, referred to as EMC) business, can build at GPRS (GeneralPacketRadioService, referred to as GPRS) network and system Long Term Evolution (SystemArchitectureEvolution, referred to as SAE) on network, provide unified emergent session to control.
Fig. 1 is the schematic diagram that subscriber equipment (UserEquipment, referred to as UE) access network according to correlation technique realizes the system architecture of IMS emergent session.In Fig. 1, IMS urgency traffic part is in order to control and to process the session of emergent session, the network element of this part mainly comprises: home subscriber server (HomeSubscriberServer, referred to as HSS), CSCF (CallSessionControlFunction, referred to as CSCF).The subscription data of the main leading subscriber of HSS, is positioned at home network.CSCF is the core network element controlling conversation procedure, comprise: Proxy Call Session Control Function (Proxy-CallSessionControlFunction, referred to as P-CSCF), query call conversation control function (Interrogating-CSCF, referred to as I-CSCF), service call conversation control function (Serving-CSCF, referred to as S-CSCF), emergency call session controlling functions (EmergencyCallSessionControlFunction, referred to as E-CSCF).Wherein, E-CSCF is the session control center of emergent session, and it determines which PSAP emergent session is routed to.
Under the prior art, UE is by the grouping domain system (EvolvedPacketSystem of GPRS/ evolution, referred to as EPS) initiate the process of IMS emergent session, experienced by access network, set up carry and obtain IP address, find P-CSCF, initiate emergent session, emergent session is routed to PSAP and a series of processes processed.
Fig. 2 is according to the UE of correlation technique at initiation IMS emergent session, and system assignment PSAP also processes the flow chart of emergent session, comprises following step S202 to step S212.
Step S202, UE initiate emergent session request, and emergent session request is routed to E-CSCF by P-CSCF.
After step S204, E-CSCF receive the emergent session request from UE, to LRF launch position inquiry request, the positional information of inquiry UE, and require that LRF distributes suitable PSAP.
Step S206, LRF inquire about the positional information of UE from position service function entity (such as LCS), and LRF selects a suitable PSAP according to the positional information of obtained UE, opsition dependent from configured PSAP.
Step S208, LRF, to E-CSCF home position inquiry response, carry the current location information of UE, and according to regioselective PSAP.
Emergent session Request routing is given this PSAP by step S210, E-CSCF.
Step S212, completes emergent session process between follow-up PSAP and UE.
In above-mentioned steps S204, if the positional information of carrying in the UE emergent session request that E-CSCF receives is credible and enough, correctly can select PSAP, then E-CSCF is directly the PSAP of UE selection correspondence according to the positional information of UE, and do not need with LRF mutual, namely step S204 does not perform to step S208.
Usually, can there is multiple PSAP in a network, each PSAP all has its scope of administering, corresponding to specific band of position scope.In fig. 2, LRF selects suitable PSAP according to the current location information of UE.When UE is moved, when initiating emergent session next time, may can choose different PSAP and getting on.
Because emergent session is not limited only to audio call, in some special cases (such as deaf-mute), emergent session can be undertaken by short message service, IMS messaging services, 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 urgency traffic.And the PSAP of this support non-voice urgency traffic be deployed with two kinds of possibilities: a kind of is the urgency traffic simultaneously realizing support voice and non-voice on existing PSAP, and a kind of is dispose separately the special PSAP served for non-voice urgency traffic.For the previous case, because this deployment is all progressively carried out, so there will be some PSAP in early stage do not support non-voice urgency traffic; For latter event, only there is the PSAP disposed separately to support non-voice urgency traffic, also have some PSAP not support non-voice urgency traffic.
Therefore, E-CSCF for it selects PSAP according to the positional information of UE, can cause the PSAP chosen may not support non-voice urgency traffic, thus non-voice urgency traffic cannot be provided to serve accordingly for user.
Summary of the invention
Be only that it selects PSAP that the UE initiating non-voice urgency traffic can be caused to choose to support that the problem of the PSAP of non-voice urgency traffic proposes the present invention according to the positional information of UE for E-CSCF in correlation technique, for this reason, main purpose of the present invention is the system of selection, the Apparatus and system that provide a kind of PSAP, to solve the problem.
To achieve these goals, according to an aspect of the present invention, the system of selection of a kind of PSAP is provided.
System of selection according to PSAP of the present invention comprises: E-CSCF receives and is used to indicate the emergent operation request message that UE initiates urgency traffic; E-CSCF, according to emergent operation request message, judges whether the type of urgency traffic is non-voice urgency traffic; If judged result is yes, E-CSCF, according to the type of the non-voice urgency traffic of the positional information of UE and UE, is the PSAP that UE selects to support non-voice urgency traffic.
Further, E-CSCF according to the type of the non-voice urgency traffic of the positional information of UE and UE, for UE selects to support that the PSAP of non-voice urgency traffic comprises: E-CSCF is the PSAP that UE selects to support non-voice urgency traffic according to the type of the non-voice urgency traffic of the positional information of the UE carried in emergent operation request message and UE.
Further, E-CSCF according to the type of the non-voice urgency traffic of the positional information of UE and UE, for UE selects to support that the PSAP of non-voice urgency traffic comprises: E-CSCF sends the type of the positional information of UE and the non-voice urgency traffic of UE carried in emergent operation request message to position enquiring server; Position enquiring server, according to the type of the non-voice urgency traffic of the positional information of the UE carried in emergent operation request message and UE, is determined address or the routing iinformation of the PSAP supporting non-voice urgency traffic, and is sent address or the routing iinformation of PSAP; E-CSCF receives from the address of position enquiring server PS AP or routing iinformation; E-CSCF, according to address or routing iinformation, is the PSAP of UE selection support non-voice urgency traffic.
Further, E-CSCF according to the type of the non-voice urgency traffic of the positional information of UE and UE, for UE selects to support that the PSAP of non-voice urgency traffic comprises: E-CSCF sends the positional information of the UE carried in emergent operation request message to position enquiring server; Position enquiring server, according to the positional information of the UE carried in emergent operation request message, determines the list of PSAP, and wherein the list of PSAP comprises the ability of the address of PSAP or the urgency traffic type of routing iinformation and PSAP support, and sends the list of PSAP; E-CSCF receives the list from the PSAP of position enquiring server, and obtains the ability of the address of the PSAP in list or the urgency traffic type of routing iinformation and PSAP support; The ability of the urgency traffic type that E-CSCF supports according to the type of the non-voice urgency traffic of UE, the address obtained from list or routing iinformation and the PSAP that obtains from list is the PSAP that UE selects to support non-voice urgency traffic.
Further, E-CSCF is according to emergent operation request message, judge that whether the type of urgency traffic is that non-voice urgency traffic comprises one of following: E-CSCF is according to whether carrying the mark that the type being used to indicate urgency traffic is non-voice urgency traffic in emergent operation request message, whether the type judging urgency traffic is non-voice urgency traffic, wherein, mark comprises one of following: independent Session initiation Protocol SIP head territory, is carried at existing SIP head territory with parametric form; E-CSCF is according to whether comprising the information that the type being used to indicate urgency traffic is non-voice urgency traffic in emergent operation request message, whether the type judging urgency traffic is non-voice urgency traffic, wherein, information comprise following one of at least: SIP signaling, Session Description Protocol SDP signaling, other message bodies.
Further, before receiving at E-CSCF the emergent operation request message being used to indicate UE initiation urgency traffic, also comprise: Proxy Call Session Control Function P-CSCF receives the emergent operation request message from UE; P-CSCF, according to emergent operation request message, judges whether the type of urgency traffic is non-voice urgency traffic; If judged result is yes, emergent operation request message is sent to E-CSCF by P-CSCF.
To achieve these goals, according to another aspect of the present invention, a kind of E-CSCF is provided.
E-CSCF according to the present invention comprises: receiving system, is used to indicate for receiving the emergent operation request message that user equipment (UE) initiates urgency traffic; Judgment means, for according to emergent operation request message, judges whether the type of urgency traffic is non-voice urgency traffic; Choice device, for when judged result is for being, according to the type of the positional information of UE and the non-voice urgency traffic of UE, is the public safety answering point PSAP that UE selects to support non-voice urgency traffic.
Further, choice device comprises: first selects module, for according to the type of the positional information of the UE carried in emergent operation request message and the non-voice urgency traffic of UE being the PSAP that UE selects to support non-voice urgency traffic.
Further, choice device comprises: the first sending module, for sending the type of the positional information of UE and the non-voice urgency traffic of UE carried in emergent operation request message to position enquiring server; First receiver module, for receiving address from position enquiring server PS AP or routing iinformation; Second selects module, for according to address or routing iinformation, for UE selects the PSAP supporting non-voice urgency traffic.
Further, choice device comprises: the second sending module, for sending the positional information of the UE carried in emergent operation request message to position enquiring server; Second receiver module, for receiving the list of the PSAP from position enquiring server, wherein list comprises address or the routing iinformation of PSAP, and the ability of the urgency traffic type of PSAP support; 3rd selects module, and for the type of the non-voice urgency traffic according to UE, the address obtained from list or routing iinformation, and the ability of the urgency traffic type of PSAP support is the PSAP that UE selects to support non-voice urgency traffic.
To achieve these goals, according to another aspect of the present invention, a kind of position enquiring server is additionally provided.
Position enquiring server according to the present invention comprises: the first determination module, for the type according to the positional information of the UE carried in emergent operation request message and the non-voice urgency traffic of UE, determine address or the routing iinformation of the PSAP supporting non-voice urgency traffic; First sending module, for sending address or the routing iinformation of PSAP; Second determination module, for the positional information according to the UE carried in emergent operation request message, determines the list of PSAP, and wherein the list of PSAP comprises the ability of the address of PSAP or the urgency traffic type of routing iinformation and PSAP support; Second sending module, for sending the list of PSAP.
To achieve these goals, according to a further aspect of the invention, the selective system of a kind of PSAP is provided.
According to the selective system of PSAP of the present invention comprise above-mentioned any one of E-CSCF and position enquiring server.
Pass through the present invention, E-CSCF is adopted to be the PSAP that UE selects to support non-voice urgency traffic according to the type of the non-voice urgency traffic of the positional information of UE and UE, solving E-CSCF in correlation technique is only that it selects PSAP that the UE initiating non-voice urgency traffic can be caused cannot to choose the problem of the PSAP supporting non-voice urgency traffic according to the positional information of UE, thus can ensure to choose the PSAP supporting non-voice urgency traffic, and non-voice urgency traffic is provided to serve accordingly for this UE.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram realizing the system architecture of IMS emergent session according to the UE access network of correlation technique;
Fig. 2 is according to the UE of correlation technique at initiation IMS emergent session, and system assignment PSAP also processes the flow chart of emergent session;
Fig. 3 is the flow chart of the system of selection of PSAP according to the embodiment of the present invention;
Fig. 4 is the interaction diagrams according to the preferred embodiment of the present invention one;
Fig. 5 is the interaction diagrams according to the preferred embodiment of the present invention two;
Fig. 6 is the interaction diagrams according to the preferred embodiment of the present invention three;
Fig. 7 is the structured flowchart of the E-CSCF according to the embodiment of the present invention;
Fig. 8 is the structured flowchart of the position enquiring server according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
According to embodiments of the invention, provide the system of selection of a kind of PSAP.Fig. 3 is the flow chart of the system of selection of PSAP according to the embodiment of the present invention, comprises following step S302 to step S306.
Step S302, E-CSCF receive and are used to indicate the emergent operation request message that UE initiates urgency traffic.
Step S304, E-CSCF, according to emergent operation request message, judge whether the type of urgency traffic is non-voice urgency traffic.
Step S306, if judged result is yes, E-CSCF, according to the type of the non-voice urgency traffic of the positional information of UE and UE, is the PSAP that UE selects to support non-voice urgency traffic.
In correlation technique, E-CSCF only selects PSAP according to the positional information of UE for it, and the UE initiating non-voice urgency traffic can be caused cannot to choose the PSAP supporting non-voice urgency traffic.In the embodiment of the present invention, E-CSCF is that UE selects PSAP to take into account the type of non-voice urgency traffic, thus can ensure to choose the PSAP supporting non-voice urgency traffic, and provides non-voice urgency traffic to serve accordingly for this UE.
It should be noted that, if the positional information of carrying in emergent operation request message is concrete and credible, the PSAP that enough selections are correct, or non-deployed position querying server in network, can be position requests function (LocationRequireFunction in this preferred embodiment, referred to as LRF), then E-CSCF is directly that UE selects PSAP according to the positional information of UE and the urgency traffic type judged.
Preferably, E-CSCF according to the type of the non-voice urgency traffic of the positional information of UE and UE, for UE selects to support that the PSAP of non-voice urgency traffic comprises: E-CSCF is the PSAP that UE selects to support non-voice urgency traffic according to the type of the non-voice urgency traffic of the positional information of the UE carried in emergent operation request message and UE.
In this preferred embodiment, if the positional information of carrying in emergent operation request message is enough to select correct PSAP, then the type of the non-voice urgency traffic of the direct positional information according to this UE and this UE is the PSAP that UE selects to support non-voice urgency traffic, and implementation is simple and convenient.
Preferably, E-CSCF according to the type of the non-voice urgency traffic of the positional information of UE and UE, for UE selects to support that the PSAP of non-voice urgency traffic comprises: E-CSCF sends the type of the positional information of UE and the non-voice urgency traffic of UE carried in emergent operation request message to position enquiring server; Position enquiring server, according to the type of the non-voice urgency traffic of the positional information of the UE carried in emergent operation request message and UE, is determined address or the routing iinformation of the PSAP supporting non-voice urgency traffic, and is sent address or the routing iinformation of PSAP; E-CSCF receives from the address of position enquiring server PS AP or routing iinformation; E-CSCF, according to address or routing iinformation, is the PSAP of UE selection support non-voice urgency traffic.
In this preferred embodiment, if the positional information of carrying in emergent operation request message is not enough to select correct PSAP, then obtain the information of PSAP to be UE selection PSAP by LRF, like this, can ensure as UE chooses the PSAP supporting non-voice urgency traffic, and provide non-voice urgency traffic to serve accordingly for this UE.
Meanwhile, by position enquiring server, the address of the PSAP chosen or routing iinformation are notified E-CSCF, then be the PSAP that UE selects to support non-voice urgency traffic by E-CSCF, the operation on E-CSCF can be saved, thus improve the treatment effeciency of E-CSCF.
Preferably, E-CSCF according to the type of the non-voice urgency traffic of the positional information of UE and UE, for UE selects to support that the PSAP of non-voice urgency traffic comprises: E-CSCF sends the positional information of the UE carried in emergent operation request message to position enquiring server; Position enquiring server, according to the positional information of the UE carried in emergent operation request message, determines the list of PSAP, and wherein the list of PSAP comprises the ability of the address of PSAP or the urgency traffic type of routing iinformation and PSAP support, and sends the list of PSAP; E-CSCF receives the list from the PSAP of position enquiring server, and wherein list comprises address or the routing iinformation of PSAP, and the ability of the urgency traffic type of PSAP support; E-CSCF is according to the type of the non-voice urgency traffic of UE, the address obtained from list or routing iinformation, and the ability of the urgency traffic type of PSAP support is the PSAP that UE selects to support non-voice urgency traffic.
In this preferred embodiment, if the positional information of carrying in emergent operation request message is not enough to select correct PSAP, then obtain the information of PSAP to be UE selection PSAP by LRF, like this, can ensure as UE chooses the PSAP supporting non-voice urgency traffic, and provide non-voice urgency traffic to serve accordingly for this UE.
Meanwhile, be the PSAP that UE selects to support non-voice urgency traffic by E-CSCF according to the list of PSAP, can ensure as UE chooses the PSAP supporting non-voice urgency traffic, and provide non-voice urgency traffic to serve accordingly for this UE.
Preferably, E-CSCF, according to emergent operation request message, judges whether the type of urgency traffic is that non-voice urgency traffic comprises following two kinds of situations.
Situation one:
E-CSCF is according to whether carrying the mark that the type being used to indicate urgency traffic is non-voice urgency traffic in emergent operation request message, whether the type judging urgency traffic is non-voice urgency traffic, wherein, mark comprises one of following: independent SIP head territory, is carried at existing SIP head territory with parametric form;
Therefore, E-CSCF is after receiving request message, do not need SIP signaling in comprehensive descision request message, other message bodies carried in SDP signaling and message just can judge whether this request message is non-voice urgency traffic, improves the judging efficiency of E-CSCF.
Situation two:
E-CSCF is according to whether comprising the information that the type being used to indicate urgency traffic is non-voice urgency traffic in emergent operation request message, whether the type judging urgency traffic is non-voice urgency traffic, wherein, information comprise following one of at least: SIP signaling, Session Description Protocol (SessionsDescriptionProtection, referred to as SDP) signaling, other message bodies.
Therefore, do not need UE in request message, insert the mark of non-voice urgency traffic type, UE can send a request message according to the mode sending common message business, lower to the Capability Requirement of UE.
It should be noted that, UE is in the emergent operation request message sent, can carry the mark that the above-mentioned type being used to indicate urgency traffic is non-voice urgency traffic, this mark can be that an independent SIP head territory is carried, and also can be carried in existing SIP head territory with the form of parameter.UE is in the emergent operation request message sent, the mark that the above-mentioned type being used to indicate urgency traffic is non-voice urgency traffic can not also be carried, by subsequent network entity: P-CSCF, E-CSCF are by judging the SIP signaling in message request, other message bodies carried in SDP signaling and message, obtain the urgency traffic type of UE request.
Preferably, before receiving at E-CSCF the emergent operation request message being used to indicate UE initiation urgency traffic, P-CSCF receives the emergent operation request message from UE; P-CSCF, according to emergent operation request message, judges whether the type of urgency traffic is non-voice urgency traffic; If judged result is yes, emergent operation request message is sent to E-CSCF by P-CSCF.
Preferably, P-CSCF is according to emergent operation request message, judge that whether the type of urgency traffic is that non-voice urgency traffic comprises one of following: P-CSCF is according to whether carrying the mark that the type being used to indicate urgency traffic is non-voice urgency traffic in emergent operation request message, whether the type judging urgency traffic is non-voice urgency traffic, wherein, mark comprises one of following: independent SIP head territory, is carried at existing SIP head territory with parametric form; P-CSCF is according to whether comprising the information that the type being used to indicate urgency traffic is non-voice urgency traffic in emergent operation request message, whether the type judging urgency traffic is non-voice urgency traffic, wherein, information comprise following one of at least: SIP signaling, Session Description Protocol (SessionsDescriptionProtection, referred to as SDP) signaling, other message bodies.
In order to help to understand above-described embodiment, further describe other multiple preferred embodiments of the present invention below.
Preferred embodiment one
This preferred embodiment one describes E-CSCF according to the urgency traffic type judged directly for UE selects PSAP.
Fig. 4 is the interaction diagrams according to the preferred embodiment of the present invention one, comprises following step S402 to step S412.
Step S402, UE initiate emergent session request, and emergent session request is routed to P-CSCF.
Step S404, P-CSCF judge the urgency traffic type of this message request after receiving this request message, if its type of service is non-voice urgency traffic, for UE selects the E-CSCF supporting non-voice urgency traffic.
Particularly, in step S402 and step S404, UE can indicate this urgency traffic type in the emergent session request message of initiating, and P-CSCF judges that after receiving this request message the mode of the urgency traffic type of this request message requests includes but not limited to following two kinds:
Mode one, before UE sends this emergent session request message, UE can determine that this request message is non-voice emergency message, then UE inserts the mark of instruction non-voice urgency traffic type in this request message sent, this mark can be carried by an independent SIP head territory, also can be carried in existing SIP head territory with the form of parameter.After P-CSCF receives request message, whether comprise the mark of instruction non-voice urgency traffic type in the request message received by judgement, whether what judge this request message requests is non-voice urgency traffic;
Adopt in this way, P-CSCF is after receiving request message, do not need SIP signaling in comprehensive descision request message, other message bodies carried in SDP signaling and message just can judge whether this request message is non-voice urgency traffic, improves the judging efficiency of P-CSCF.
Mode two, P-CSCF are after receiving request message, to the SIP signaling in this request message, other message bodies carried in SDP signaling and message are tested, therefrom obtaining this request message is that non-voice urgency traffic is adopted in this way, do not need UE in request message, insert the mark of non-voice urgency traffic type, UE can send a request message according to the mode sending common message business, lower to the Capability Requirement of UE.
Step S406, P-CSCF are by the E-CSCF of emergent session Request routing to selection.
Step S408, E-CSCF judge the urgency traffic type of this request message requests after receiving this request message.If now, the positional information of carrying in request message is concrete and credible, the PSAP that enough selections are correct, or non-deployed position querying server (being LRF in this embodiment) in network, then E-CSCF is directly that UE selects PSAP according to the positional information of UE and the urgency traffic type judged.
Particularly, in this step, E-CSCF judges that after receiving this request message the method for the urgency traffic type of this request message requests is with step S404, repeats no more here.
Step S410, E-CSCF according to selected PSAP, by emergent session Request routing to this PSAP.
Step S412, the emergent session processing procedure between follow-up PSAP and UE.
Preferred embodiment two
This preferred embodiment two describes E-CSCF and the urgency traffic type of UE is sent to position enquiring server, and this position enquiring server is that UE selects PSAP according to urgency traffic type.
Fig. 5 is the interaction diagrams according to the preferred embodiment of the present invention two, comprises following step S502 to step S518.
Step S502, UE initiate emergent session request, and emergent session request is routed to P-CSCF.
Step S504, P-CSCF judge the urgency traffic type of this request message requests after receiving this request message, for UE selects the E-CSCF supporting non-voice urgency traffic.
Particularly, in step S502 and step S504, UE can indicate this urgency traffic type in the emergent session request message of initiating, and P-CSCF judges that after receiving this request message the mode of the urgency traffic type of this request message requests is with the step S302 of preferred embodiment one and step S304, now repeats no more.
Step S506, P-CSCF are by the E-CSCF of emergent session Request routing to selection.
Step S508, E-CSCF judge the urgency traffic type of this request message requests after receiving this request message.
Particularly, in this step, E-CSCF judges that after receiving this request message the method for the urgency traffic type of this request message requests is with step S504, repeats no more here.
Step S510, if the positional information of carrying in request message is insincere, or IMS system needs to carry out the reasons such as legitimacy inspection to the positional information of UE, after then E-CSCF receives emergent session request, to position enquiring server (being LRF in this embodiment) launch position inquiry request, wherein carry the urgency traffic type of the UE request parsed, and require that LRF is that UE distributes the PSAP with this urgency traffic type.
Step S512, LRF executing location query script, the current location information of inquiry UE.Simultaneously LRF performs PSAP assigning process, for UE distributes suitable PSAP according to the urgency traffic type of the current positional information of UE and UE request.
Step S514, LRF, to E-CSCF home position inquiry response, are included as address or the routing iinformation of the PSAP that UE distributes.
Step S516, E-CSCF according to selected PSAP, by emergent session Request routing to this PSAP.
Step S518, the emergent session processing procedure between follow-up PSAP and UE.
Preferred embodiment three
This preferred embodiment three describes position enquiring server and returns the list of PSAP and its ability in its region of being responsible for according to the positional information of the user inquired, and is that UE selects PSAP by E-CSCF according to the urgency traffic type of the UE obtained.
Fig. 6 is the interaction diagrams according to the preferred embodiment of the present invention two, comprises following step S602 to step S620.
Step S602, UE initiate emergent session request, and emergent session request is routed to P-CSCF.
Step S604, P-CSCF judge the urgency traffic type of this request message requests after receiving this request message, for UE selects the E-CSCF supporting non-voice urgency traffic.
Particularly, in step S602 and step S604, UE can indicate this urgency traffic type in the emergent session request message of initiating, and P-CSCF judges that after receiving this request message the mode of the urgency traffic type of this request message requests is with the step S402 of preferred embodiment one and step S404, now repeats no more.
Step S606, P-CSCF are by the E-CSCF of emergent session Request routing to selection.
Step S608, E-CSCF judge the urgency traffic type of this request message requests after receiving this request message.
Particularly, in this step, E-CSCF judges that after receiving this request message the method for the urgency traffic type of this request message requests is with step S604, repeats no more here.
Step S610, if the positional information of carrying in request message is insincere, or IMS system needs to carry out the reasons such as legitimacy inspection to the positional information of UE, after then E-CSCF receives emergent session request, to position enquiring server (being LRF in this embodiment) launch position inquiry request, wherein do not carry the urgency traffic type of the UE request parsed, and require that LRF is that UE distributes PSAP.
Step S612, LRF executing location query script, the current location information of inquiry UE.The positional information that LRF is current according to UE simultaneously selects the list of PSAP in this region and the urgency traffic type of capability of support thereof.
Step S614, LRF, to E-CSCF home position inquiry response, are included as the list of PSAP and the urgency traffic type of capability of support thereof of UE selection.
Step S616, E-CSCF according to parse UE request urgency traffic type from the PSAP list returned for UE selection meet corresponding urgency traffic type of capability PSAP.
Step S618, E-CSCF according to selected PSAP, by emergent session Request routing to this PSAP.
Step S620, the emergent session processing procedure between follow-up PSAP and UE.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Embodiments provide a kind of E-CSCF, this E-CSCF may be used for the system of selection realizing above-mentioned PSAP.Fig. 7 is the structured flowchart of the E-CSCF according to the embodiment of the present invention, comprises receiving system 72, judgment means 74 and choice device 76, is described in detail below to its structure.
Receiving system 72, is used to indicate for receiving the emergent operation request message that UE initiates urgency traffic; Judgment means 74, is connected to receiving system 72, for the emergent operation request message received according to receiving system 72, judges whether the type of urgency traffic is non-voice urgency traffic; Choice device 76, be connected to judgment means 74, for when judgment means 74 judged result is for being, according to the type of the positional information of the UE carried in emergent operation request message and the non-voice urgency traffic of UE, be the PSAP that UE selects to support non-voice urgency traffic.
In correlation technique, E-CSCF only selects PSAP according to the positional information of UE for it, and the UE initiating non-voice urgency traffic can be caused cannot to choose the PSAP supporting non-voice urgency traffic.In the embodiment of the present invention, E-CSCF is that UE selects PSAP to take into account the type of non-voice urgency traffic, thus can ensure to choose the PSAP supporting non-voice urgency traffic, and provides non-voice urgency traffic to serve accordingly for this UE.
It should be noted that, if the positional information of carrying in emergent operation request message is concrete and credible, the PSAP that enough selections are correct, or non-deployed position querying server in network, can be position requests function (LocationRequireFunction in this preferred embodiment, referred to as LRF), then E-CSCF is directly that UE selects PSAP according to the positional information of UE and the urgency traffic type judged.
Preferably, choice device 76 comprises: first selects module 761, for according to the type of the positional information of the UE carried in emergent operation request message and the non-voice urgency traffic of UE being the PSAP that UE selects to support non-voice urgency traffic.
In this preferred embodiment, if the positional information of carrying in emergent operation request message is enough to select correct PSAP, then the type of the non-voice urgency traffic of the direct positional information according to this UE and this UE is the PSAP that UE selects to support non-voice urgency traffic, and implementation is simple and convenient.
Preferably, choice device 76 comprises: the first sending module 762, for sending the type of the positional information of UE and the non-voice urgency traffic of UE carried in emergent operation request message to position enquiring server; First receiver module 763, for receiving address from position enquiring server PS AP or routing iinformation; Second selects module 764, is connected to the first receiver module 763, for the address that receives according to the first receiver module 763 or routing iinformation, is the PSAP that UE selects to support non-voice urgency traffic.
In this preferred embodiment, if the positional information of carrying in emergent operation request message is not enough to select correct PSAP, then obtain the information of PSAP so that second selects module 764 for UE selection PSAP by LRF, like this, can ensure as UE chooses the PSAP supporting non-voice urgency traffic, and provide non-voice urgency traffic to serve accordingly for this UE.
Simultaneously, by position enquiring server, the address of the PSAP chosen or routing iinformation are notified E-CSCF, select module 764 for the PSAP of UE selection support non-voice urgency traffic by second again, the operation on E-CSCF can be saved, thus improve the treatment effeciency of E-CSCF.
Preferably, choice device 76 comprises: the second sending module 765, for sending the positional information of the UE carried in emergent operation request message to position enquiring server; Second receiver module 766, for receiving the list of the PSAP from position enquiring server, wherein list comprises address or the routing iinformation of PSAP, and the ability of the urgency traffic type of PSAP support; 3rd selects module 767, be connected to the second receiver module 766, for the type of the non-voice urgency traffic according to UE, the address obtained from the list that the second receiver module 766 receives or routing iinformation, and the ability of the urgency traffic type of PSAP support is the PSAP that UE selects to support non-voice urgency traffic.
In this preferred embodiment, if the positional information of carrying in emergent operation request message is not enough to select correct PSAP, then obtain the information of PSAP so that the 3rd selects module 767 for UE selection PSAP by LRF, like this, can ensure as UE chooses the PSAP supporting non-voice urgency traffic, and provide non-voice urgency traffic to serve accordingly for this UE.
Meanwhile, select module 767 to be the PSAP that UE selects to support non-voice urgency traffic according to the list of PSAP by the 3rd, can ensure as UE chooses the PSAP supporting non-voice urgency traffic, and provide non-voice urgency traffic to serve accordingly for this UE.
It should be noted that, the E-CSCF described in device embodiment corresponds to above-mentioned embodiment of the method, and its concrete implementation procedure carried out detailed description in embodiment of the method, did not repeat them here.
According to embodiments of the invention, additionally provide a kind of position enquiring server.Fig. 8 is the structured flowchart of the position enquiring server according to the embodiment of the present invention, comprising: the first determination module 82, first sending module 84, second determination module 86 and the second sending module 88.Below its structure is described in detail.
First determination module 82, for the type according to the positional information of the UE carried in emergent operation request message and the non-voice urgency traffic of UE, determines address or the routing iinformation of the PSAP supporting non-voice urgency traffic; First sending module 84, is connected to the first determination module 82, for sending address or the routing iinformation of the PSAP that the first determination module 82 is determined.
Second determination module 86, for the positional information according to the UE carried in emergent operation request message, determines the list of PSAP, and wherein the list of PSAP comprises the ability of the address of PSAP or the urgency traffic type of routing iinformation and PSAP support; Second sending module 88, is connected to the second determination module 86, for sending the list of the PSAP that the second determination module 86 is determined.
According to embodiments of the invention, additionally provide the selective system of a kind of PSAP, comprise one of above-mentioned E-CSCF and position enquiring server.
In sum, according to the abovementioned embodiments of the present invention, E-CSCF is adopted to be the PSAP that UE selects to support non-voice urgency traffic according to the type of the non-voice urgency traffic of the positional information of UE and UE, solving E-CSCF in correlation technique is only that it selects PSAP that the UE initiating non-voice urgency traffic can be caused cannot to choose the problem of the PSAP supporting non-voice urgency traffic according to the positional information of UE, thus can ensure to choose the PSAP supporting non-voice urgency traffic, and non-voice urgency traffic is provided to serve accordingly for this UE.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a system of selection of public safety answering point PSAP, is characterized in that, comprising:
Emergency call session controlling functions E-CSCF receives and is used to indicate the emergent operation request message that user equipment (UE) initiates urgency traffic;
Described E-CSCF, according to described emergent operation request message, judges whether the type of described urgency traffic is non-voice urgency traffic;
If judged result is yes, described E-CSCF, according to the type of the described non-voice urgency traffic of the positional information of described UE and described UE, is the PSAP that described UE selects to support described non-voice urgency traffic;
Wherein, described E-CSCF according to the type of the described non-voice urgency traffic of the positional information of described UE and described UE, for described UE selects to support that the PSAP of described non-voice urgency traffic comprises:
Described E-CSCF sends the positional information of the described UE carried in described emergent operation request message to position enquiring server;
Described position enquiring server is according to the positional information of the described UE carried in described emergent operation request message, determine the list of described PSAP, the list of wherein said PSAP comprises the ability of the address of described PSAP or the urgency traffic type of routing iinformation and described PSAP support, and sends the list of described PSAP;
Described E-CSCF receives the list from the described PSAP of described position enquiring server, and obtains the ability of the address of the described PSAP in described list or the urgency traffic type of routing iinformation and described PSAP support;
The ability of the urgency traffic type that described E-CSCF supports according to the type of the described non-voice urgency traffic of described UE, the described address obtained from described list or described routing iinformation and the described PSAP that obtains from described list is the PSAP that described UE selects to support described non-voice urgency traffic.
2. method according to claim 1, is characterized in that, described E-CSCF according to the type of the described non-voice urgency traffic of the positional information of described UE and described UE, for described UE selects to support that the PSAP of described non-voice urgency traffic comprises:
Described E-CSCF is the PSAP that described UE selects to support described non-voice urgency traffic according to the type of the described non-voice urgency traffic of the positional information of the described UE carried in described emergent operation request message and described UE.
3. method according to claim 1, is characterized in that, described E-CSCF according to the type of the described non-voice urgency traffic of the positional information of described UE and described UE, for described UE selects to support that the PSAP of described non-voice urgency traffic comprises:
Described E-CSCF sends the type of the positional information of the described UE carried in described emergent operation request message and the described non-voice urgency traffic of described UE to position enquiring server;
Described position enquiring server is according to the type of the described non-voice urgency traffic of the positional information of the described UE carried in described emergent operation request message and described UE, determine address or the routing iinformation of the PSAP of the described non-voice urgency traffic of described support, and send address or the routing iinformation of described PSAP;
Described E-CSCF receives address from PSAP described in described position enquiring server or routing iinformation;
Described E-CSCF, according to described address or described routing iinformation, is the PSAP of the described non-voice urgency traffic of described UE selection support.
4. method according to claim 1, is characterized in that, described E-CSCF, according to described emergent operation request message, judges that whether the type of described urgency traffic is that non-voice urgency traffic comprises one of following:
Described E-CSCF is according to whether carrying the mark that the type being used to indicate described urgency traffic is non-voice urgency traffic in described emergent operation request message, whether the type judging described urgency traffic is non-voice urgency traffic, wherein, described mark comprises one of following: independent Session initiation Protocol SIP head territory, is carried at existing SIP head territory with parametric form;
Described E-CSCF is according to whether comprising the information that the type being used to indicate described urgency traffic is non-voice urgency traffic in described emergent operation request message, whether the type judging described urgency traffic is non-voice urgency traffic, wherein, described information comprise following one of at least: SIP signaling, Session Description Protocol SDP signaling, other message bodies.
5. method according to claim 1, is characterized in that, before receiving the described emergent operation request message being used to indicate described UE initiation urgency traffic, also comprises at described E-CSCF:
Proxy Call Session Control Function P-CSCF receives the described emergent operation request message from described UE;
Described P-CSCF, according to described emergent operation request message, judges whether the type of described urgency traffic is non-voice urgency traffic;
If described judged result is yes, described emergent operation request message is sent to described E-CSCF by described P-CSCF.
6. an emergency call session controlling functions E-CSCF, is characterized in that, comprising:
Receiving system, is used to indicate for receiving the emergent operation request message that user equipment (UE) initiates urgency traffic;
Judgment means, for according to described emergent operation request message, judges whether the type of described urgency traffic is non-voice urgency traffic;
Choice device, for when judged result is for being, according to the type of the positional information of described UE and the described non-voice urgency traffic of described UE, is the public safety answering point PSAP that described UE selects to support described non-voice urgency traffic;
Wherein, described choice device comprises:
Second sending module, for sending the positional information of the described UE carried in described emergent operation request message to position enquiring server;
Second receiver module, for receiving the list of the described PSAP from described position enquiring server, wherein said list comprises address or the routing iinformation of described PSAP, and the ability of the urgency traffic type of described PSAP support;
3rd selects module, for the type of the described non-voice urgency traffic according to described UE, the described address obtained from described list or described routing iinformation, and the ability of the urgency traffic type of described PSAP support is the PSAP that described UE selects to support described non-voice urgency traffic.
7. E-CSCF according to claim 6, is characterized in that, described choice device comprises:
First selects module, for according to the type of the positional information of the described UE carried in described emergent operation request message and the described non-voice urgency traffic of described UE being the PSAP that described UE selects to support described non-voice urgency traffic.
8. E-CSCF according to claim 6, is characterized in that, described choice device comprises:
First sending module, for the type of the described non-voice urgency traffic of the positional information from the described UE carried in described emergent operation request message to position enquiring server and described UE that send;
First receiver module, for receiving address from PSAP described in described position enquiring server or routing iinformation;
Second selects module, for according to described address or described routing iinformation, for described UE selects the PSAP supporting described non-voice urgency traffic.
9. a position enquiring server, is characterized in that, comprising:
First determination module, for the type according to the positional information of the UE carried in emergent operation request message and the non-voice urgency traffic of described UE, determines address or the routing iinformation of the PSAP supporting described non-voice urgency traffic;
First sending module, for sending address or the routing iinformation of described PSAP;
Second determination module, for the positional information according to the described UE carried in described emergent operation request message, determine the list of described PSAP, the list of wherein said PSAP comprises the ability of the address of described PSAP or the urgency traffic type of routing iinformation and described PSAP support;
Second sending module, for sending the list of described PSAP.
10. a selective system of public safety answering point PSAP, is characterized in that, comprises the emergency call session controlling functions E-CSCF according to any one of claim 7 to 8 and position enquiring server according to claim 9.
CN201010218205.9A 2010-06-29 2010-06-29 The system of selection of public safety answering point, Apparatus and system Expired - Fee Related CN102316077B (en)

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