CN104284360A - P-CSCF fault processing method and system - Google Patents
P-CSCF fault processing method and system Download PDFInfo
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- CN104284360A CN104284360A CN201410562188.9A CN201410562188A CN104284360A CN 104284360 A CN104284360 A CN 104284360A CN 201410562188 A CN201410562188 A CN 201410562188A CN 104284360 A CN104284360 A CN 104284360A
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- H—ELECTRICITY
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Abstract
The invention relates to a P-CSCF fault processing method and system. The method includes the steps that a service-call session control function (S-CSCF) obtains a proxy-call session control function (P-CSCF) address; the S-CSCF searches for user devices (UE) corresponding to a fault P-CSCF according to the address of the fault P-CSCF address; the S-CSCF sends a reregistering indication message to a stand-by P-CSCF so that the stand-by P-CSCF can forward the reregistering indication message to the UEs, and the reregistering indication message comprises the address of the stand-by P-CSCF address corresponding to the UEs so that the UEs can conduct reregistering on the stand-by P-CSCF. According to the P-CSCF fault processing method and system, after the P-CSCF fails, all the UEs using the fault P-CSCF can be informed to be reregistered to a new P-CSCF in advance, so that smooth building of the voice long-term evolution (VoLTE) service is guaranteed.
Description
Technical field
The present invention relates to the communication technology, (Proxy-Call Session Control Function is called for short: P-CSCF) fault handling method and system to particularly relate to a kind of Proxy Call Session Control Function.
Background technology
Voice Long Term Evolution (Voice Over Long Term Evolution, be called for short: VoLTE) be framework full Internet protocol (Internet Protocol on 4G network, be called for short: IP) voice scheme end to end under condition is the final solution of LTE epoch voice.For operator, dispose VoLTE and not only promote wireless frequency spectrum utilance, reduce network cost, also introduce the business etc. such as HD video phone, High frequency speech, significantly improve communication quality.
The realization of VoLTE must rely on IP Multimedia System (IP Multimedia Subsystem, be called for short: the IMS) deployment of network, IMS network element entity has: subscriber equipment (User Equipment, the abbreviation: UE) of supporting VoLTE function; (Call Session Control Function, is called for short: CSCF) network element CSCF; Wherein, CSCF comprises again: Proxy Call Session Control Function (Proxy-CSCF, be called for short: P-CSCF), query call conversation control function (Interrogating-CSCF, be called for short: I-CSCF) and service call conversation control function (Serving-CSCF, abbreviation: S-CSCF); P-CSCF is the unified entrance of IMS visited network, complete Session initiation Protocol (the Session Initiation Protocol between IMS and UE, be called for short: SIP) (Quality of Service, is called for short: QoS) management and charging bill generate for message compression, certification, service quality; I-CSCF is the unified entrance of IMS home network, primary responsibility inquires about home subscriber server (Home Subscriber Server in registration, be called for short: HSS) for UE selects available S-CSCF, HSS is the server of stored user and server relevant information in IMS; S-CSCF is the core in IMS CSCF network element, and the registration of primary responsibility UE, authentication, business trigger and conversation control function.P-CSCF is linked into the entrance network element of IMS system as user, and its importance is self-evident.In many cases, multimedia service is caused to set up because the fault of P-CSCF makes UE cannot receive or send sip message to other CSCF of IMS.
In prior art and specification, when UE is to after IMS network has been registered, P-CSCF breaks down, if UE is as the initiator of business, during for the strong business of requirement of real-time as initiated VoLTE call request, P-CSCF does not respond or reports an error, and UE judges that this P-CSCF breaks down thus initiates emergence treatment scheme: message be forwarded on P-CSCF for subsequent use, re-start the registration process on P-CSCF for subsequent use, then continue process business signaling process.If UE is after registered ims success, P-CSCF breaks down, but UE do not initiate any business so and do not know that P-CSCF breaks down, if now have the strong business of requirement of real-time as audio call forward time, can disconnect at P-CSCF place, UE as called cannot the fault of perception P-CSCF, prior art UE as shown in Figure 1 as called cannot the signaling process figure of perception P-CSCF fault:
Step 101, S-CSCF receives the Invite notification message (this message sets up the notification message of voice call link) that calling party UE sends;
Step 102, forwards this Invite notification message to P-CSCF;
Step 103, receives the errored response that P-CSCF returns or the response not receiving P-CSCF;
Step 104, S-CSCF judges that this fault short-term can not solve;
Step 105, the response message that S-CSCF transmission link cannot be set up is to calling party UE.
Visible, if there are catastrophe failure irreclaimable words in a short time in P-CSCF, UE is as the initiator of business, namely calling UE can take P-CSCF transition strategy, but other UE not initiating any business still cannot the fault of this P-CSCF of perception, these UE just can only start when call signaling arrives, from fault P-CSCF transfer, to re-register new P-CSCF, thus delay the connecting time of user's calling.
Summary of the invention
The invention provides a kind of P-CSCF fault handling method and device, can after P-CSCF break down, notice uses each UE of this fault P-CSCF to re-register new P-CSCF in advance, thus ensures the smooth and easy foundation of VoLTE business.
The invention provides a kind of P-CSCF fault handling method, comprising:
Service call conversation control function S-CSCF obtains fault Proxy Call Session Control Function P-CSCF address;
Described S-CSCF, according to described fault P-CSCF address, searches the user equipment (UE) corresponding with described fault P-CSCF;
Described S-CSCF sends re-injection volume Indication message to P-CSCF for subsequent use, described re-injection volume Indication message is forwarded to described UE to make described P-CSCF for subsequent use, described re-injection volume Indication message comprises P-CSCF address for subsequent use corresponding to described UE, re-registers to described P-CSCF for subsequent use to make described UE.
The present invention also provides a kind of P-CSCF fault processing system, comprising: service call conversation control function S-CSCF equipment, Proxy Call Session Control Function P-CSCF equipment, comprises fault P-CSCF equipment and P-CSCF equipment for subsequent use in described P-CSCF equipment;
Described S-CSCF equipment, for obtaining the address of fault P-CSCF equipment; According to the address of described fault P-CSCF equipment, search the user equipment (UE) corresponding with described fault P-CSCF equipment; Send re-injection volume Indication message to described P-CSCF equipment for subsequent use, described re-injection volume Indication message comprises the address of P-CSCF equipment for subsequent use corresponding to described UE;
Described P-CSCF equipment for subsequent use, for receiving the described re-injection volume Indication message that described S-CSCF equipment sends, and forward described re-injection volume Indication message to described UE, re-register to described P-CSCF equipment for subsequent use according to the address of described P-CSCF equipment for subsequent use to make described UE.
As shown from the above technical solution, the present invention by S-CSCF according to the fault P-CSCF address got, search the UE corresponding with fault P-CSCF, and instruction uses the UE of this fault P-CSCF to re-register other P-CSCF for subsequent use in advance, UE when call signaling arrives in prior art is effectively avoided just to start the time-lag problem from fault P-CSCF transfer, each UE achieving prior notice operational failure P-CSCF re-registers new P-CSCF, ensure that the smooth and easy foundation of VoLTE business.
Accompanying drawing explanation
Fig. 1 be prior art UE as called cannot the signaling process figure of perception P-CSCF fault:
Fig. 2 is the schematic flow sheet of P-CSCF fault handling method embodiment one of the present invention;
Fig. 3 is the schematic flow sheet of P-CSCF fault handling method embodiment two of the present invention;
Fig. 4 is the structural representation of P-CSCF fault processing system embodiment one of the present invention;
Fig. 5 is the structural representation of P-CSCF fault processing system embodiment two of the present invention;
Embodiment
Fig. 2 is the schematic flow sheet of P-CSCF fault handling method embodiment one of the present invention.As shown in Figure 2, the method for the present embodiment comprises:
Step 101, service call conversation control function S-CSCF obtain fault Proxy Call Session Control Function P-CSCF address.
Concrete, S-CSCF can obtain fault P-CSCF address in several ways, is not restricted in this enforcement to the method for S-CSCF acquisition fault P-CSCF address.
Step 102, S-CSCF, according to fault P-CSCF address, search the user equipment (UE) corresponding with fault P-CSCF.
Concrete, S-CSCF is the core in IMS CSCF network element, and the registration of primary responsibility UE, authentication, business trigger and conversation control function, preserves the information such as IP address of P-CSCF address corresponding to UE and domain name, UE in it.After S-CSCF gets the address information of fault P-CSCF, then can search the UE information corresponding with the address of this fault P-CSCF.
Step 103, S-CSCF send re-injection volume Indication message to P-CSCF for subsequent use, and to make P-CSCF for subsequent use forward re-injection volume Indication message to UE, re-injection volume Indication message comprises P-CSCF address for subsequent use corresponding to UE, re-registers to P-CSCF for subsequent use to make UE.
Concrete, UE, when initial registration is to IMS, carries the address list of UE P-CSCF for subsequent use, that is, preserves the P-CSCF address information for subsequent use that each UE is corresponding in S-CSCF.After S-CSCF confirms the UE that fault P-CSCF is corresponding by step 102, search the P-CSCF address for subsequent use of each UE, and sending re-injection volume Indication message to P-CSCF for subsequent use corresponding to each UE, re-injection volume Indication message comprises the P-CSCF address for subsequent use corresponding to UE; After P-CSCF for subsequent use receives the re-injection volume Indication message of S-CSCF transmission, then pass through the IP address of UE, forward this re-injection volume Indication message, to make UE re-register to its P-CSCF for subsequent use in advance, avoid just shifting from fault P-CSCF at call business temporarily.
The P-CSCF fault handling method that the present embodiment provides, by S-CSCF according to the fault P-CSCF address got, search the UE corresponding with fault P-CSCF, and instruction uses the UE of this fault P-CSCF to re-register other P-CSCF for subsequent use in advance, when effectively to avoid in prior art call signaling to arrive, UE just shifts from fault P-CSCF the time-lag problem caused, thus each UE achieving prior notice operational failure P-CSCF re-registers new P-CSCF, ensure that the smooth and easy foundation of VoLTE business.
Fig. 3 is the schematic flow sheet of P-CSCF fault handling method embodiment two of the present invention.As shown in Figure 3, the method for the present embodiment comprises:
Step 201, the first P-CSCF for subsequent use send I-CSCF query messages to domain name system DNS, receive the address information of the I-CSCF that DNS returns, send the first message to I-CSCF.
Concrete, for subsequent use P-CSCF of the first P-CSCF for subsequent use corresponding to the UE of first discovery fault P-CSCF.Such as, if UE is as the initiator of VoLTE call request, namely UE is as caller, when the traffic signaling sent is delivered to P-CSCF, P-CSCF does not respond or reports an error, then calling UE judges that this P-CSCF breaks down, and this calling UE then becomes first and finds the UE that this P-CSCF breaks down, and the P-CSCF for subsequent use corresponding to this calling UE is then the first P-CSCF for subsequent use, if UE is as the callee of VoLTE call request, namely UE is as called, if now have the strong business of requirement of real-time as audio call forward time, because P-CSCF breaks down, can disconnect at P-CSCF place, then UE as called cannot the fault of perception P-CSCF, then the VoLTE call request that calling UE is initiated cannot be received, but be responsible for the S-CSCF that this VoLTE call request continues, when the VoLTE call request of forwarding calling UE is to P-CSCF, if P-CSCF does not respond or reports an error, the S-CSCF that then called UE is corresponding determines that this P-CSCF breaks down, S-CSCF searches the P-CSCF address for subsequent use of this called UE, then this called UE becomes the UE that first this P-CSCF of discovery breaks down, P-CSCF for subsequent use corresponding to this called UE is then the first P-CSCF for subsequent use.First P-CSCF for subsequent use opens domain name system DNS inquiry I-CSCF address, by sending I-CSCF query messages to DNS, I-CSCF query messages comprises domain name and/or the IP address of the first P-CSCF for subsequent use, DNS is according to the domain name of this first P-CSCF for subsequent use and/or IP address, inquire about the I-CSCF address in this fault P-CSCF region, first P-CSCF for subsequent use receives the address information of the I-CSCF that DNS returns, then the address that the first message informing I-CSCF removes all S-CSCF inquired about in this fault P-CSCF region is generated, namely S-CSCF address, this territory.Wherein, the first message comprises fault P-CSCF address, the instruction of this territory S-CSCF address lookup, and this territory S-CSCF is the S-CSCF being positioned at the same area with fault P-CSCF.
Step 202, query call conversation control function I-CSCF receive the first message that the first P-CSCF for subsequent use sends; Send the second message to home subscriber server HSS, and receive this territory S-CSCF address list that HSS returns.
Concrete, after I-CSCF receives the first message of the first P-CSCF transmission for subsequent use, get this territory S-CSCF address lookup instruction in the first message, mutual with the HSS in this territory again, namely I-CSCF generates the second message informing HSS and goes to inquire about all S-CSCF addresses in this territory, wherein, the second message comprises the instruction of this territory S-CSCF address lookup, and receives this territory S-CSCF address list that HSS returns.
Step 203, I-CSCF send the 3rd message to the S-CSCF in the S-CSCF address list of this territory, and the 3rd message comprises fault P-CSCF address, gets fault P-CSCF address to make S-CSCF.
Concrete, I-CSCF is according to this territory S-CSCF address list received from HSS, send the 3rd message to each S-CSCF in the S-CSCF address list of this territory, wherein, 3rd message comprises fault P-CSCF address, to make S-CSCF get fault P-CSCF address, thus the UE information that S-CSCF can be corresponding with it according to fault P-CSCF address search, and notify that each UE moves to its respective P-CSCF for subsequent use.
Step 204, service call conversation control function S-CSCF obtain fault Proxy Call Session Control Function P-CSCF address.
Concrete, by above-mentioned steps 201 ~ step 203, S-CSCF receives the 3rd message comprising fault P-CSCF address that I-CSCF sends, thus makes S-CSCF get fault P-CSCF address.
Further, if UE is in roaming state, and UE is called UE, S-CSCF obtains fault P-CSCF address, comprise: the S-CSCF corresponding to called UE forwards the visit territory P-CSCF of voice Long Term Evolution VoLTE call request to called UE of calling UE, if visit territory P-CSCF is without response or return error message, the S-CSCF corresponding to called UE determines that visit territory P-CSCF is fault P-CSCF; S-CSCF corresponding to called UE obtains fault P-CSCF address.
If UE is in roaming state, and UE is calling UE, S-CSCF obtains fault P-CSCF address, comprising: calling UE sends the visit territory P-CSCF of VoLTE call request to calling UE, if visit territory P-CSCF is without response or return error message, calling UE determines that visit territory P-CSCF is fault P-CSCF; Calling UE sends the S-CSCF corresponding to the 4th message to calling UE, and the 4th message comprises fault P-CSCF address.
Concrete, VoLTE voice call service needs UE to connect the P-CSCF in its current residing region, but for S-CSCF, I-CSCF equipment, needs UE to connect its signing-contract field, i.e. S-CSCF, I-CSCF equipment of UE home domain.Therefore, if UE is in roaming state, the P-CSCF now broken down is the P-CSCF in UE random zone, and the UE of the operational failure P-CSCF under can notifying to manage with all S-CSCF in fault P-CSCF same area by above-mentioned steps 201 ~ step 203 moves to P-CSCF for subsequent use.When UE is in roaming state, and UE is when being called UE, the visit territory P-CSCF (namely the region of this called UE current roaming) of voice Long Term Evolution VoLTE call request to called UE of calling UE is forwarded by the S-CSCF corresponding to called UE, if visit territory P-CSCF is without response or return error message, the S-CSCF corresponding to called UE determines that visit territory P-CSCF is fault P-CSCF; S-CSCF corresponding to called UE obtains fault P-CSCF address, can notify to move to P-CSCF for subsequent use with the UE be attached thereto of this fault P-CSCF zones of different.Or, when UE is in roaming state, and when UE is calling UE, calling UE sends the visit territory P-CSCF of VoLTE call request to calling UE, if visit territory P-CSCF is without response or return error message, calling UE determines that visit territory P-CSCF is fault P-CSCF; Calling UE sends the S-CSCF corresponding to the 4th message to calling UE, and the 4th message comprises fault P-CSCF address, can notify to move to P-CSCF for subsequent use with the UE be attached thereto of this fault P-CSCF zones of different.
Step 205, S-CSCF, according to fault P-CSCF address, search the user equipment (UE) corresponding with fault P-CSCF.
Step 206, S-CSCF send re-injection volume Indication message to P-CSCF for subsequent use, and to make P-CSCF for subsequent use forward re-injection volume Indication message to UE, re-injection volume Indication message comprises P-CSCF address for subsequent use corresponding to UE, re-registers to P-CSCF for subsequent use to make UE.
The specific implementation process of step 205 ~ step 206, see the step 102 ~ step 103 in embodiment of the method one, repeats no more herein.
The P-CSCF fault handling method that the present embodiment provides, by the address by fault P-CSCF, notify all S-CSCF being in same area with fault P-CSCF, and notify each S-CSCF being in zones of different with fault P-CSCF, make S-CSCF can according to the fault P-CSCF address got, search the UE corresponding with fault P-CSCF stored in it, and instruction uses the UE of this fault P-CSCF to re-register other P-CSCF for subsequent use in advance, thus the UE of notice operational failure P-CSCF as much as possible moves to P-CSCF for subsequent use before VoLTE business is set up, avoid VoLTE business and carry out the interim time-lag problem shifting P-CSCF again and cause, thus each UE achieving prior notice operational failure P-CSCF re-registers new P-CSCF, ensure that the smooth and easy foundation of VoLTE business.
Fig. 4 is the structural representation of P-CSCF fault processing system embodiment one of the present invention, as shown in Figure 4, the system of the present embodiment comprises: comprise fault P-CSCF equipment 21 and P-CSCF equipment 22 for subsequent use in service call conversation control function S-CSCF equipment 1, Proxy Call Session Control Function P-CSCF equipment 2, P-CSCF equipment 2; S-CSCF equipment 1, for obtaining the address of fault P-CSCF equipment 21; According to the address of fault P-CSCF equipment 21, search the user equipment (UE) corresponding with fault P-CSCF equipment 21; Send re-injection volume Indication message to P-CSCF equipment 22 for subsequent use, re-injection volume Indication message comprises the address of P-CSCF equipment 22 for subsequent use corresponding to UE; P-CSCF equipment 22 for subsequent use, for receiving the re-injection volume Indication message that S-CSCF equipment 1 sends, and forwarding re-injection volume Indication message to UE, re-registering to make UE according to the address of P-CSCF equipment 22 for subsequent use to P-CSCF equipment 22 for subsequent use.
The device of the present embodiment, can be used for the technical scheme performing P-CSCF fault handling method embodiment one shown in Fig. 2, it realizes principle and technique effect is similar, repeats no more herein.
The P-CSCF fault processing system that the present embodiment provides, by S-CSCF according to the fault P-CSCF address got, search the UE corresponding with fault P-CSCF, and instruction uses the UE of this fault P-CSCF to re-register other P-CSCF for subsequent use in advance, when effectively to avoid in prior art call signaling to arrive, UE just shifts from fault P-CSCF the time-lag problem caused, thus each UE achieving prior notice operational failure P-CSCF re-registers new P-CSCF, ensure that the smooth and easy foundation of VoLTE business.
Fig. 5 is the structural representation of P-CSCF fault processing system embodiment two of the present invention, as shown in Figure 5, the system of the present embodiment, on the basis of system shown in Figure 4, further, also comprises: query call conversation control function I-CSCF equipment 3, home subscriber server HSS4; The for subsequent use P-CSCF equipment of the first P-CSCF equipment 221, first for subsequent use P-CSCF equipment 221 for subsequent use corresponding to the UE of first discovery fault P-CSCF equipment 21 is comprised in P-CSCF equipment 22 for subsequent use; Comprise this territory S-CSCF equipment 11 in S-CSCF equipment 1, this territory S-CSCF equipment 11 is the S-CSCF equipment being positioned at the same area with fault P-CSCF equipment 21; First P-CSCF equipment 221 for subsequent use, for sending the first message to I-CSCF equipment 3, the first message comprises the inquiry instruction of the address of fault P-CSCF equipment 21, the address of this territory S-CSCF equipment 11; I-CSCF equipment 3, for receiving the first message that the first P-CSCF equipment 221 for subsequent use sends; Send the second message to HSS4, and receive the address list of this territory S-CSCF equipment 11 that HSS4 returns; Second message comprises the inquiry instruction of the address of this territory S-CSCF equipment 11; Send the 3rd message to each S-CSCF equipment in the address list of this territory S-CSCF equipment 11, the 3rd message comprises the address of fault P-CSCF equipment 21; HSS4, for receiving the second message that I-CSCF equipment 3 sends, and sends the address list of this territory S-CSCF equipment 11 to I-CSCF equipment 3 according to the inquiry instruction comprised in the second message.This system also comprises: domain name system DNS 5; First P-CSCF equipment 221 for subsequent use, also for sending the query messages of I-CSCF equipment 3 to DNS5, receive the address information of the I-CSCF equipment 3 that DNS5 returns, the query messages of I-CSCF equipment 3 comprises domain name and/or the IP address of the first P-CSCF equipment 221 for subsequent use; DNS5, for receiving the query messages of the I-CSCF equipment 3 that the first P-CSCF equipment 221 for subsequent use sends, and feed back the address information of I-CSCF equipment 3 according to the domain name of the P-CSCF for subsequent use of first in query messages equipment 221 and/or IP address to the first P-CSCF equipment 221 for subsequent use.
Further, on the basis of above-described embodiment, also comprise in S-CSCF equipment 1: the S-CSCF equipment 12 corresponding to called UE being in roaming state; Be in the S-CSCF equipment 12 corresponding to called UE of roaming state, for the visit territory P-CSCF equipment of the voice Long Term Evolution VoLTE call request to called UE that forward calling UE, receive the error message that visit territory P-CSCF equipment sends, error message for be in roaming state called UE corresponding to S-CSCF equipment 12 determine that visit territory P-CSCF equipment is fault P-CSCF equipment 21.Also comprise in S-CSCF equipment 1: the S-CSCF equipment 13 corresponding to calling UE 7 being in roaming state; S-CSCF equipment 13 corresponding to the described calling UE being in roaming state, for receiving the 4th message that calling UE sends, the 4th message comprises the address of fault P-CSCF equipment 21.Wherein, calling UE is by sending the visit territory P-CSCF of VoLTE call request to calling UE, and visit territory P-CSCF is without response or return error message, and calling UE determines that this visit territory P-CSCF is fault P-CSCF equipment 21; Calling UE sends the S-CSCF equipment 13 corresponding to the 4th message to calling UE.
The system of the present embodiment, can be used for the technical scheme performing P-CSCF fault handling method embodiment two shown in Fig. 3, it realizes principle and technique effect is similar, repeats no more herein.
The P-CSCF fault processing system that the present embodiment provides, by the address by fault P-CSCF, notify all S-CSCF being in same area with fault P-CSCF, and notify each S-CSCF being in zones of different with fault P-CSCF, make S-CSCF can according to the fault P-CSCF address got, search the UE corresponding with fault P-CSCF stored in it, and instruction uses the UE of this fault P-CSCF to re-register other P-CSCF for subsequent use in advance, thus the UE of notice operational failure P-CSCF as much as possible moves to P-CSCF for subsequent use before VoLTE business is set up, avoid VoLTE business and carry out the interim time-lag problem shifting P-CSCF again and cause, thus each UE achieving prior notice operational failure P-CSCF re-registers new P-CSCF, ensure that the smooth and easy foundation of VoLTE business.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.It should be noted that, in accompanying drawing or specification, similar or identical element all uses identical Reference numeral.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a P-CSCF fault handling method, is characterized in that, comprising:
Service call conversation control function S-CSCF obtains fault Proxy Call Session Control Function P-CSCF address;
Described S-CSCF, according to described fault P-CSCF address, searches the user equipment (UE) corresponding with described fault P-CSCF;
Described S-CSCF sends re-injection volume Indication message to P-CSCF for subsequent use, described re-injection volume Indication message is forwarded to described UE to make described P-CSCF for subsequent use, described re-injection volume Indication message comprises P-CSCF address for subsequent use corresponding to described UE, re-registers to described P-CSCF for subsequent use to make described UE.
2. method according to claim 1, is characterized in that, described S-CSCF also comprises before obtaining fault P-CSCF address:
Query call conversation control function I-CSCF receives the first message that the first P-CSCF for subsequent use sends; The for subsequent use P-CSCF of described first P-CSCF for subsequent use corresponding to the UE of first described fault P-CSCF of discovery; Described first message comprises described fault P-CSCF address, the instruction of this territory S-CSCF address lookup; Described this territory S-CSCF is the S-CSCF being positioned at the same area with described fault P-CSCF;
Described I-CSCF sends the second message to home subscriber server HSS, and receives this territory S-CSCF address list that described HSS returns; Described second message comprises this territory described S-CSCF address lookup instruction;
Described I-CSCF sends the 3rd message to the S-CSCF in the S-CSCF address list of this territory described, and described 3rd message comprises described fault P-CSCF address, gets described fault P-CSCF address to make described S-CSCF.
3. method according to claim 2, is characterized in that, described I-CSCF also comprises before receiving the first message of the first P-CSCF transmission for subsequent use:
Described first P-CSCF for subsequent use sends I-CSCF query messages to domain name system DNS, receives the address information of the described I-CSCF that described DNS returns, sends described first message to described I-CSCF; Described I-CSCF query messages comprises domain name and/or the IP address of described first P-CSCF for subsequent use.
4. method according to claim 1, is characterized in that, if described UE is in roaming state, and described UE is called UE, and described S-CSCF obtains fault P-CSCF address, comprising:
S-CSCF corresponding to described called UE forwards the visit territory P-CSCF of voice Long Term Evolution VoLTE call request to described called UE of calling UE, if described visit territory P-CSCF is without response or return error message, the S-CSCF corresponding to described called UE determines that described visit territory P-CSCF is described fault P-CSCF; S-CSCF corresponding to described called UE obtains described fault P-CSCF address.
5. method according to claim 1, is characterized in that, if described UE is in roaming state, and described UE is calling UE, and described S-CSCF obtains fault P-CSCF address, comprising:
Described calling UE sends the visit territory P-CSCF of VoLTE call request to described calling UE, if described visit territory P-CSCF is without responding or returning error message, described calling UE determines that described visit territory P-CSCF is described fault P-CSCF; Described calling UE sends the S-CSCF corresponding to the 4th message to described calling UE, and described 4th message comprises described fault P-CSCF address.
6. a P-CSCF fault processing system, is characterized in that, comprising: service call conversation control function S-CSCF equipment, Proxy Call Session Control Function P-CSCF equipment, comprises fault P-CSCF equipment and P-CSCF equipment for subsequent use in described P-CSCF equipment;
Described S-CSCF equipment, for obtaining the address of fault P-CSCF equipment; According to the address of described fault P-CSCF equipment, search the user equipment (UE) corresponding with described fault P-CSCF equipment; Send re-injection volume Indication message to described P-CSCF equipment for subsequent use, described re-injection volume Indication message comprises the address of P-CSCF equipment for subsequent use corresponding to described UE;
Described P-CSCF equipment for subsequent use, for receiving the described re-injection volume Indication message that described S-CSCF equipment sends, and forward described re-injection volume Indication message to described UE, re-register to described P-CSCF equipment for subsequent use according to the address of described P-CSCF equipment for subsequent use to make described UE.
7. system according to claim 6, is characterized in that, also comprises: query call conversation control function I-CSCF equipment, home subscriber server HSS;
The first P-CSCF equipment for subsequent use is comprised, for subsequent use P-CSCF equipment of described first P-CSCF equipment for subsequent use corresponding to the UE of first the described fault P-CSCF equipment of discovery in described P-CSCF equipment for subsequent use;
Comprise this territory S-CSCF equipment in described S-CSCF equipment, this territory described S-CSCF equipment is the S-CSCF equipment being positioned at the same area with described fault P-CSCF equipment;
Described first P-CSCF equipment for subsequent use, for sending the first message to described I-CSCF equipment, described first message comprise the address of described fault P-CSCF equipment, this territory described S-CSCF equipment address inquiry instruction;
Described I-CSCF equipment, for receiving described first message that described first P-CSCF equipment for subsequent use sends; Send the second message to described HSS, and receive the address list of this territory described S-CSCF equipment that described HSS returns; Described second message comprises the inquiry instruction of the address of this territory described S-CSCF equipment; Send the 3rd message to each S-CSCF equipment in the address list of this territory described S-CSCF equipment, described 3rd message comprises the address of described fault P-CSCF equipment;
Described HSS, for receiving described second message that described I-CSCF equipment sends, and sends the address list of this territory described S-CSCF equipment to described I-CSCF equipment according to the inquiry instruction comprised in described second message.
8. system according to claim 7, is characterized in that, also comprises: domain name system DNS;
Described first P-CSCF equipment for subsequent use, also for sending the query messages of I-CSCF equipment to described DNS, receive the address information of the described I-CSCF equipment that described DNS returns, the query messages of described I-CSCF equipment comprises domain name and/or the IP address of described first P-CSCF equipment for subsequent use;
Described DNS, for receiving the query messages of the described I-CSCF equipment that described first P-CSCF equipment for subsequent use sends, and feed back the address information of described I-CSCF equipment according to the domain name of the P-CSCF for subsequent use of first in described query messages equipment and/or IP address to described first P-CSCF equipment for subsequent use.
9. system according to claim 6, is characterized in that, also comprises in described S-CSCF equipment: the S-CSCF equipment corresponding to called UE being in roaming state;
S-CSCF equipment corresponding to the described called UE being in roaming state, for the visit territory P-CSCF equipment of the voice Long Term Evolution VoLTE call request to described called UE that forward calling UE, receive the error message that described visit territory P-CSCF equipment sends, the S-CSCF equipment corresponding to called UE being in roaming state described in described error message is used for determines that described visit territory P-CSCF equipment is described fault P-CSCF equipment.
10. system according to claim 6, is characterized in that, also comprises in described S-CSCF equipment: the S-CSCF equipment corresponding to calling UE being in roaming state;
S-CSCF equipment corresponding to the described calling UE being in roaming state, for receiving the 4th message that described calling UE sends, described 4th message comprises the address of described fault P-CSCF equipment.
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