CN104284360B - P-CSCF fault handling methods and system - Google Patents
P-CSCF fault handling methods and system Download PDFInfo
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- CN104284360B CN104284360B CN201410562188.9A CN201410562188A CN104284360B CN 104284360 B CN104284360 B CN 104284360B CN 201410562188 A CN201410562188 A CN 201410562188A CN 104284360 B CN104284360 B CN 104284360B
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- 238000010586 diagram Methods 0.000 description 8
- 230000011664 signaling Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The present invention relates to a kind of P CSCF fault handling methods and system, wherein, method includes service call conversation control function S CSCF and obtains failure Proxy Call Session Control Function P CSCF addresses；S CSCF search user equipment (UE) corresponding with failure P CSCF according to failure P CSCF addresses；S CSCF send re-register instruction message to spare P CSCF, so that spare P CSCF forward re-register instruction message to UE, re-register instruction message includes the corresponding spare P CSCF addresses of UE, so that UE is re-registered to spare P CSCF.It realizes after P CSCF break down, can notify to reregister with new P CSCF in advance using each UE of failure P CSCF, so as to ensure the smooth foundation of voice Long Term Evolution VoLTE business.
Description
Technical field
The present invention relates to the communication technology more particularly to a kind of Proxy Call Session Control Function (Proxy-Call
Session Control Function, referred to as：P-CSCF) fault handling method and system.
Background technology
Voice Long Term Evolution (Voice Over Long Term Evolution, referred to as：VoLTE it is) framework in 4G networks
Upper full Internet protocol (Internet Protocol, abbreviation：IP voice scheme end to end under the conditions of), is LTE epoch voices
Final solution.For operator, deployment VoLTE not only promotes wireless frequency spectrum utilization rate, reduces network cost, also
Business such as HD video phone, High frequency speech etc. are introduced, significantly improve communication quality.
The realization of VoLTE must rely on IP multimedia subsystem (IP Multimedia Subsystem, abbreviation：IMS)
The deployment of network, IMS network element entities have：Support user equipment (User Equipment, the abbreviation of VoLTE functions：UE)；Calling
Conversation control function (Call Session Control Function, referred to as：CSCF) network element；Wherein, CSCF includes again：Generation
Manage call session control function (Proxy-CSCF, abbreviation：P-CSCF), query call conversation control function
(Interrogating-CSCF, referred to as：I-CSCF) and service call conversation control function (Serving-CSCF, referred to as：S-
CSCF)；P-CSCF is the unified entrance of IMS visited network, completes the Session initiation Protocol (Session between IMS and UE
Initiation Protocol, referred to as：SIP) message compression, certification, service quality (Quality of Service, abbreviation：
QoS) management and charging bill generation；I-CSCF is the unified entrance of IMS home network, is mainly responsible for and is inquired about in registration
Home subscriber server (Home Subscriber Server, referred to as：HSS) come to select available S-CSCF, the HSS to be for UE
The server of user and server relevant information is stored in IMS；S-CSCF is the core in IMS call session control function network elements
Part is mainly responsible for registration, authentication, business triggering and the conversation control function of UE.P-CSCF is linked into IMS systems as user
Entrance network element, importance is self-evident.In many cases, because the failure of P-CSCF cause UE can not receive or
Sending sip message can not establish to other CSCF of IMS so as to cause multimedia service.
In the prior art and specification, after UE is registered to IMS network to be completed, P-CSCF breaks down, if UE is as industry
The initiator of business, when VoLTE call requests are such as initiated for the strong business of requirement of real-time, P-CSCF does not respond or reports an error,
UE judges that the P-CSCF breaks down to initiate emergence treatment scheme：It forwards the message on spare P-CSCF, re-starts
Registration process on spare P-CSCF then proceedes to processing business signaling process.If UE is after registered ims success, P-CSCF
It breaks down, but UE does not initiate any business so being not aware that P-CSCF breaks down, if there is the requirement of real-time strong at this time
Business when for example audio call forwards, can be disconnected P-CSCF at, UE can not perceive the failure of P-CSCF as being called, such as
Prior art UE shown in FIG. 1 is as the called signaling process figure that can not perceive P-CSCF failures：
Step 101, S-CSCF receive calling party UE transmission Invite notification messages (message is to establish voice communication
The notification message of link)；
Step 102, the Invite notification messages are forwarded to P-CSCF；
Step 103, receive the errored response of P-CSCF returns or do not receive the response of P-CSCF；
Step 104, S-CSCF judges that the failure cannot solve in short term；
Step 105, S-CSCF sends the response message that can not establish of link to calling party UE.
As it can be seen that if P-CSCF occurs, catastrophe failure is irreclaimable in a short time, and initiators of the UE as business is that is, main
Make UE that can take P-CSCF transition strategies, but other UE for not initiating any business still can not perceive the event of this P-CSCF
Barrier, these UE can only just start to shift from failure P-CSCF when call signaling reaches, and reregister with new P-CSCF, so as to
Delay the connecting time of user's calling.
The content of the invention
The present invention provides a kind of P-CSCF fault handling methods and device, can be after P-CSCF breaks down, and notice makes
New P-CSCF is reregistered in advance with each UE of failure P-CSCF, so as to ensure the smooth foundation of VoLTE business.
The present invention provides a kind of P-CSCF fault handling methods, including：
Service call conversation control function S-CSCF obtains failure Proxy Call Session Control Function P-CSCF addresses；
The S-CSCF searches user equipment corresponding with the failure P-CSCF according to the failure P-CSCF addresses
UE；
The S-CSCF sends re-register instruction message to spare P-CSCF, so that the spare P-CSCF turns to the UE
Send out re-register instruction message described, the re-register instruction message includes the corresponding spare P-CSCF addresses of the UE, so that institute
UE is stated to re-register to the spare P-CSCF.
The present invention also provides a kind of P-CSCF fault processing systems, including：Service call conversation control function S-CSCF is set
Standby, Proxy Call Session Control Function P-CSCF equipment includes failure P-CSCF equipment and spare P- in the P-CSCF equipment
CSCF equipment；
The S-CSCF equipment, for obtaining the address of failure P-CSCF equipment；According to the failure P-CSCF equipment
User equipment (UE) corresponding with the failure P-CSCF equipment is searched in address；Re-register instruction message is sent to the spare P-
CSCF equipment, the re-register instruction message include the address of the corresponding spare P-CSCF equipment of the UE；
The spare P-CSCF equipment, for receiving the re-register instruction message that the S-CSCF equipment is sent, and
Forward the re-register instruction message to the UE so that the UE according to the address of the spare P-CSCF equipment to described standby
It is re-registered with P-CSCF equipment.
As shown from the above technical solution, the present invention by S-CSCF according to the failure P-CSCF addresses got, search and
The corresponding UE of failure P-CSCF, and indicate to reregister with other spare P-CSCF in advance using the UE of failure P-CSCF have
UE during call signaling arrival in the prior art is avoided to effect just to start the time-lag problem shifted from failure P-CSCF, is realized
Prior notice reregisters with new P-CSCF using each UE of failure P-CSCF, ensure that the smooth foundation of VoLTE business.
Description of the drawings
Fig. 1 is prior art UE as the called signaling process figure that can not perceive P-CSCF failures：
Fig. 2 is the flow diagram of P-CSCF fault handling methods embodiment one of the present invention；
Fig. 3 is the flow diagram of P-CSCF fault handling methods embodiment two of the present invention；
Fig. 4 is the structure diagram of P-CSCF fault processing systems embodiment one of the present invention；
Fig. 5 is the structure diagram of P-CSCF fault processing systems embodiment two of the present invention；
Specific embodiment
Fig. 2 is the flow diagram of P-CSCF fault handling methods embodiment one of the present invention.As shown in Fig. 2, the present embodiment
Method include：
Step 101, service call conversation control function S-CSCF obtain failure Proxy Call Session Control Function P-CSCF
Address.
Specifically, S-CSCF can obtain failure P-CSCF addresses in several ways, S-CSCF is obtained in this embodiment
The method of failure P-CSCF addresses is taken not to be restricted.
Step 102, S-CSCF search user equipment (UE) corresponding with failure P-CSCF according to failure P-CSCF addresses.
Specifically, S-CSCF is the core in IMS call session control function network elements, be mainly responsible for UE registration,
Authentication, business triggering and conversation control function, inside preserve the letters such as the corresponding P-CSCF addresses of UE and domain name, the IP address of UE
Breath.After S-CSCF gets the address information of failure P-CSCF, then it can search corresponding with the address of failure P-CSCF
UE information.
Step 103, S-CSCF send re-register instruction message to spare P-CSCF, so that spare P-CSCF forwards weight to UE
Register instruction message, re-register instruction message include the corresponding spare P-CSCF addresses of UE so that UE to spare P-CSCF again
Registration.
Specifically, UE when initial registration is to IMS, carries the address list of the spare P-CSCF of UE, that is to say, that S-
The corresponding spare P-CSCF address informations of each UE are preserved in CSCF.When S-CSCF confirms failure P-CSCF by step 102
After corresponding UE, the spare P-CSCF addresses of each UE are searched, and it is corresponding spare to each UE to send re-register instruction message
P-CSCF, re-register instruction message include the spare P-CSCF addresses corresponding to UE；Spare P-CSCF receives S-CSCF hairs
After the re-register instruction message sent, then the IP address by UE, the re-register instruction message is forwarded, so that UE is spare to its in advance
P-CSCF is re-registered, and avoids coming in call business interim just from failure P-CSCF transfers.
P-CSCF fault handling methods provided in this embodiment, by S-CSCF according to the failure P-CSCF got
UE corresponding with failure P-CSCF is searched in location, and indicates to reregister with other in advance using the UE of failure P-CSCF spare
P-CSCF, UE is just asked from time-lag caused by failure P-CSCF transfers when being effectively prevented from call signaling arrival in the prior art
Topic, it is achieved thereby that prior notice reregisters with new P-CSCF using each UE of failure P-CSCF, ensure that VoLTE industry
The smooth foundation of business.
Fig. 3 is the flow diagram of P-CSCF fault handling methods embodiment two of the present invention.As shown in figure 3, the present embodiment
Method include：
Step 201, the first spare P-CSCF send I-CSCF query messages to domain name system DNS, receive the I- that DNS is returned
The address information of CSCF sends first message to I-CSCF.
Specifically, the first spare P-CSCF is the spare P-CSCF corresponding to first UE for finding failure P-CSCF.Example
Such as, if initiators of the UE as VoLTE call requests, that is, UE, as caller, the traffic signaling sent is transferred to P-CSCF
When, P-CSCF does not respond or reports an error, then calling UE judges that the P-CSCF breaks down, which then becomes first discovery
The UE that the P-CSCF breaks down, the spare P-CSCF corresponding to the calling UE are then the first spare P-CSCF；If UE conducts
The callee of VoLTE call requests, that is, UE are used as and are called, if the business for having requirement of real-time strong at this time such as audio call turns
It when sending, since P-CSCF breaks down, can be disconnected at P-CSCF, then UE is as the called event that can not perceive P-CSCF
Barrier can not then receive the VoLTE call requests of calling UE initiation, but be responsible for the S-CSCF that the VoLTE call requests continue,
When forwarding the VoLTE call requests of calling UE to P-CSCF, if P-CSCF does not respond or reports an error, the corresponding S- of called UE
CSCF determines that the P-CSCF breaks down, and S-CSCF searches the spare P-CSCF addresses of the called UE, then the called UE becomes the
One UE for finding that the P-CSCF breaks down, the spare P-CSCF corresponding to the called UE are then the first spare P-CSCF.The
One spare P-CSCF opens domain name system DNS inquiry I-CSCF addresses, by sending I-CSCF query messages to DNS, I-CSCF
Query messages include the domain name and/or IP address of the first spare P-CSCF, DNS according to the domain name of the first spare P-CSCF and/
Or IP address, the I-CSCF addresses in failure P-CSCF regions are inquired about, the first spare P-CSCF receives the I-CSCF that DNS is returned
Address information, then generate first message notice I-CSCF go to inquire about all S-CSCF in failure P-CSCF regions
Address, that is, this domain S-CSCF addresses.Wherein, first message includes failure P-CSCF addresses, this domain S-CSCF addresses are looked into
Instruction is ask, this domain S-CSCF is the S-CSCF being located at failure P-CSCF in the same area.
Step 202, query call conversation control function I-CSCF receive the first message that the first spare P-CSCF is sent；Hair
Second message is sent to home subscriber server HSS, and receives this domain S-CSCF address lists of HSS returns.
Specifically, after I-CSCF receives the first message that the first spare P-CSCF is sent, get in first message
The S-CSCF address lookups instruction of this domain, then interacted with the HSS in this domain, i.e. I-CSCF generation second message notices HSS goes to inquire about this
All S-CSCF addresses in domain, wherein, second message is indicated including this domain S-CSCF address lookups, and receives the sheet of HSS returns
Domain S-CSCF address lists.
Step 203, I-CSCF send the 3rd message to the S-CSCF in the S-CSCF address lists of this domain, and the 3rd message includes
Failure P-CSCF addresses, so that S-CSCF gets failure P-CSCF addresses.
Specifically, I-CSCF sends the 3rd message to this domain according to this domain S-CSCF address lists received at HSS
Each S-CSCF in S-CSCF address lists, wherein, the 3rd message includes failure P-CSCF addresses, so that S-CSCF is got
Failure P-CSCF addresses so as to which S-CSCF can be according to the corresponding UE information of failure P-CSCF address searches, and notify each
A UE is migrated to its respective spare P-CSCF.
Step 204, service call conversation control function S-CSCF obtain failure Proxy Call Session Control Function P-CSCF
Address.
Specifically, by 201~step 203 of above-mentioned steps, what S-CSCF receptions I-CSCF was sent includes failure P-CSCF
3rd message of address, so that S-CSCF gets failure P-CSCF addresses.
Further, if UE is in roaming state, and UE is called UE, and S-CSCF obtains failure P-CSCF addresses, including：
S-CSCF corresponding to called UE forwards the voice Long Term Evolution VoLTE call requests of calling UE to the visit domain P- of called UE
CSCF, if visit domain P-CSCF determines visit domain P-CSCF without responding or returning error message, the S-CSCF corresponding to called UE
For failure P-CSCF；S-CSCF corresponding to called UE obtains failure P-CSCF addresses.
If UE is in roaming state, and UE is calling UE, and S-CSCF obtains failure P-CSCF addresses, including：Calling UE is sent out
VoLTE call requests are sent to the visit domain P-CSCF of calling UE, if visit domain P-CSCF is without response or returns to error message, caller
UE determines that visit domain P-CSCF is failure P-CSCF；Calling UE sends the 4th message to the S-CSCF corresponding to calling UE, and the 4th
Message includes failure P-CSCF addresses.
Specifically, VoLTE voice call services, which need UE to connect it, is presently in the P-CSCF in region, but for S-
CSCF, I-CSCF equipment are, it is necessary to which UE connects S-CSCF, I-CSCF equipment of its signing-contract field, i.e. UE home domain.Therefore, if UE
In roaming state, the P-CSCF to break down at this time is the P-CSCF in UE random zones, passes through 201~step of above-mentioned steps
203 can notify to move to the UE using failure P-CSCF under all S-CSCF management in failure P-CSCF same areas
Spare P-CSCF.In the case that UE is in roaming state, and UE is called UE, forwarded by the S-CSCF corresponding to called UE
To the visit domain P-CSCF of called UE, (namely the called UE is currently overflow for the voice Long Term Evolution VoLTE call requests of calling UE
The region of trip), if visit domain P-CSCF determines visit domain P- without responding or returning error message, the S-CSCF corresponding to called UE
CSCF is failure P-CSCF；S-CSCF corresponding to called UE obtains failure P-CSCF addresses, can notify and failure P-
The UE being attached thereto of CSCF different zones moves to spare P-CSCF.Alternatively, when UE is in roaming state, and UE is calling UE
In the case of, calling UE send VoLTE call requests arrive calling UE visit domain P-CSCF, if visit domain P-CSCF without respond or
Error message is returned to, calling UE determines that visit domain P-CSCF is failure P-CSCF；Calling UE sends the 4th message to calling UE institute
Corresponding S-CSCF, the 4th message include failure P-CSCF addresses, can notify with failure P-CSCF different zones with
The UE of connection move to spare P-CSCF.
Step 205, S-CSCF search user equipment (UE) corresponding with failure P-CSCF according to failure P-CSCF addresses.
Step 206, S-CSCF send re-register instruction message to spare P-CSCF, so that spare P-CSCF forwards weight to UE
Register instruction message, re-register instruction message include the corresponding spare P-CSCF addresses of UE so that UE to spare P-CSCF again
Registration.
The specific implementation process of step 205~step 206 referring to step 102~step 103 in embodiment of the method one, this
Place repeats no more.
P-CSCF fault handling methods provided in this embodiment, by the way that by the address of failure P-CSCF, notice arrives and failure
P-CSCF is in all S-CSCF of same area and notice arrives each S- that different zones are in failure P-CSCF
CSCF so that S-CSCF can search the corresponding with failure P-CSCF of its memory storage according to the failure P-CSCF addresses got
UE, and indicate to reregister with other spare P-CSCF in advance using the UE of failure P-CSCF, so as to as much as possible logical
Know and move to spare P-CSCF before the foundation of VoLTE business using the UE of failure P-CSCF, avoid VoLTE business and come temporarily again
Time-lag problem caused by shifting P-CSCF, it is achieved thereby that prior notice is re-registered using each UE of failure P-CSCF
To new P-CSCF, the smooth foundation of VoLTE business ensure that.
Fig. 4 is the structure diagram of P-CSCF fault processing systems embodiment one of the present invention, as shown in figure 4, the present embodiment
System include：Service call conversation control function S-CSCF equipment 1, Proxy Call Session Control Function P-CSCF equipment 2, P-
Failure P-CSCF equipment 21 and spare P-CSCF equipment 22 are included in CSCF equipment 2；S-CSCF equipment 1, for obtaining failure P-
The address of CSCF equipment 21；According to the address of failure P-CSCF equipment 21, search and 21 corresponding user of failure P-CSCF equipment
Equipment UE；Re-register instruction message is sent to spare P-CSCF equipment 22, re-register instruction message includes the corresponding spare P- of UE
The address of CSCF equipment 22；Spare P-CSCF equipment 22, for receiving the re-register instruction message of the transmission of S-CSCF equipment 1, and
To UE forward re-register instruction message so that UE according to the address of spare P-CSCF equipment 22 to spare P-CSCF equipment 22 again
Registration.
The device of the present embodiment, available for perform Fig. 2 shown in P-CSCF fault handling methods embodiment one technical solution,
Its implementing principle and technical effect is similar, and details are not described herein again.
P-CSCF fault processing systems provided in this embodiment, by S-CSCF according to the failure P-CSCF got
UE corresponding with failure P-CSCF is searched in location, and indicates to reregister with other in advance using the UE of failure P-CSCF spare
P-CSCF, UE is just asked from time-lag caused by failure P-CSCF transfers when being effectively prevented from call signaling arrival in the prior art
Topic, it is achieved thereby that prior notice reregisters with new P-CSCF using each UE of failure P-CSCF, ensure that VoLTE industry
The smooth foundation of business.
Fig. 5 is the structure diagram of P-CSCF fault processing systems embodiment two of the present invention, as shown in figure 5, the present embodiment
System on the basis of system shown in Figure 4, further, further include：Query call conversation control function I-CSCF equipment 3,
Home subscriber server HSS4；The first spare P-CSCF equipment 221, the first spare P-CSCF are included in spare P-CSCF equipment 22
The spare P-CSCF equipment corresponding to UE that equipment 221 finds failure P-CSCF equipment 21 for first；It is wrapped in S-CSCF equipment 1
Containing this domain S-CSCF equipment 11, this domain S-CSCF equipment 11 is the S-CSCF being located at failure P-CSCF equipment 21 in the same area
Equipment；First spare P-CSCF equipment 221, for sending first message to I-CSCF equipment 3, first message includes failure P-
The address of CSCF equipment 21, this domain S-CSCF equipment 11 address inquiry instruction；I-CSCF equipment 3, it is standby for receiving first
The first message sent with P-CSCF equipment 221；Second message is sent to HSS4, and this domain S-CSCF for receiving HSS4 returns is set
Standby 11 address list；Second message includes the inquiry instruction of the address of this domain S-CSCF equipment 11；The 3rd message is sent to originally
Each S-CSCF equipment in the address list of domain S-CSCF equipment 11, the 3rd message include the ground of failure P-CSCF equipment 21
Location；HSS4 for receiving the second message of the transmission of I-CSCF equipment 3, and is indicated according to the inquiry included in second message to I-
CSCF equipment 3 sends the address list of this domain S-CSCF equipment 11.The system further includes：Domain name system DNS 5；First spare P-
CSCF equipment 221 is additionally operable to send the query messages of I-CSCF equipment 3 to DNS5, receives the I-CSCF equipment 3 that DNS5 is returned
Address information, the query messages of I-CSCF equipment 3 include the domain name and/or IP address of the first spare P-CSCF equipment 221；
DNS5, for receiving the query messages for the I-CSCF equipment 3 that the first spare P-CSCF equipment 221 is sent, and according to query messages
In the first spare P-CSCF equipment 221 domain name and/or IP address feed back I-CSCF to the first spare P-CSCF equipment 221 and set
Standby 3 address information.
Further, on the basis of above-described embodiment, also included in S-CSCF equipment 1：It is called in roaming state
S-CSCF equipment 12 corresponding to UE；S-CSCF equipment 12 corresponding to called UE in roaming state, for forwarding caller
The voice Long Term Evolution VoLTE call requests of UE receive visit domain P-CSCF equipment to the visit domain P-CSCF equipment of called UE
The error message of transmission, the S-CSCF equipment 12 that error message is used for corresponding to the called UE in roaming state determine visit domain
P-CSCF equipment is failure P-CSCF equipment 21.It is also included in S-CSCF equipment 1：Corresponding to calling UE 7 in roaming state
S-CSCF equipment 13；S-CSCF equipment 13 corresponding to the calling UE in roaming state, for receiving calling UE hair
The 4th message sent, the 4th message include the address of failure P-CSCF equipment 21.Wherein, calling UE is by sending VoLTE callings
The visit domain P-CSCF of calling UE is asked, for visit domain P-CSCF without responding or returning to error message, calling UE determines the visit
Domain P-CSCF is failure P-CSCF equipment 21；Calling UE sends the 4th message to the S-CSCF equipment 13 corresponding to calling UE.
The system of the present embodiment, available for perform Fig. 3 shown in P-CSCF fault handling methods embodiment two technical solution,
Its implementing principle and technical effect is similar, and details are not described herein again.
P-CSCF fault processing systems provided in this embodiment, by the way that by the address of failure P-CSCF, notice arrives and failure
P-CSCF is in all S-CSCF of same area and notice arrives each S- that different zones are in failure P-CSCF
CSCF so that S-CSCF can search the corresponding with failure P-CSCF of its memory storage according to the failure P-CSCF addresses got
UE, and indicate to reregister with other spare P-CSCF in advance using the UE of failure P-CSCF, so as to as much as possible logical
Know and move to spare P-CSCF before the foundation of VoLTE business using the UE of failure P-CSCF, avoid VoLTE business and come temporarily again
Time-lag problem caused by shifting P-CSCF, it is achieved thereby that prior notice is re-registered using each UE of failure P-CSCF
To new P-CSCF, the smooth foundation of VoLTE business ensure that.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical solution in the embodiment of the present invention is clearly and completely described.It should be noted that in attached drawing or specification,
Similar or identical element all uses identical reference numeral.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in previous embodiment or carry out equivalent substitution to which part technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is not made to depart from the spirit and model of various embodiments of the present invention technical solution
It encloses.
Claims (6)
1. a kind of P-CSCF fault handling methods, which is characterized in that including：
Service call conversation control function S-CSCF obtains failure Proxy Call Session Control Function P-CSCF addresses；
The S-CSCF searches user equipment (UE) corresponding with the failure P-CSCF according to the failure P-CSCF addresses；
The S-CSCF sends re-register instruction message to spare P-CSCF, so that the spare P-CSCF forwards institute to the UE
Re-register instruction message is stated, the re-register instruction message includes the corresponding spare P-CSCF addresses of the UE, so that the UE
It is re-registered to the spare P-CSCF；
If the UE is in roaming state, and the UE is called UE, and the S-CSCF obtains failure P-CSCF addresses, including：
The voice Long Term Evolution VoLTE call requests of S-CSCF forwarding calling UEs corresponding to the called UE are to the called UE
Visit domain P-CSCF, if it is described visit domain P-CSCF without respond or return error message, the S- corresponding to the called UE
CSCF determines that the visit domain P-CSCF is the failure P-CSCF；S-CSCF corresponding to the called UE obtains the failure
P-CSCF addresses；
If the UE is in roaming state, and the UE is calling UE, and the S-CSCF obtains failure P-CSCF addresses, including：
The calling UE sends VoLTE call requests to the visit domain P-CSCF of the calling UE, if the visit domain P-CSCF
Without responding or returning error message, the calling UE determines that the visit domain P-CSCF is the failure P-CSCF；The caller
UE sends the 4th message to the S-CSCF corresponding to the calling UE, and the 4th message includes the failure P-CSCF addresses.
2. according to the method described in claim 1, it is characterized in that, before S-CSCF acquisition failure P-CSCF addresses, go back
Including：
Query call conversation control function I-CSCF receives the first message that the first spare P-CSCF is sent；The first spare P-
CSCF is the spare P-CSCF corresponding to first UE for finding the failure P-CSCF；The first message includes the failure
P-CSCF addresses, the instruction of this domain S-CSCF address lookups；This domain S-CSCF is to be located at same area with the failure P-CSCF
S-CSCF in domain；
The I-CSCF sends second message to home subscriber server HSS, and with receiving this domain S-CSCF that the HSS is returned
Location list；The second message includes the S-CSCF address lookups instruction of this described domain；
The I-CSCF sends the 3rd message to the S-CSCF in this domain S-CSCF address lists, and the 3rd message includes
The failure P-CSCF addresses, so that the S-CSCF gets the failure P-CSCF addresses.
3. according to the method described in claim 2, it is characterized in that, the I-CSCF receive that the first spare P-CSCF sends the
It is further included before one message：
The first spare P-CSCF sends I-CSCF query messages to domain name system DNS, receives the I- that the DNS is returned
The address information of CSCF sends the first message to the I-CSCF；It is standby that the I-CSCF query messages include described first
With the domain name and/or IP address of P-CSCF.
4. a kind of P-CSCF fault processing systems, which is characterized in that including：Service call conversation control function S-CSCF equipment,
Proxy Call Session Control Function P-CSCF equipment includes failure P-CSCF equipment and spare P-CSCF in the P-CSCF equipment
Equipment；
The S-CSCF equipment, for obtaining the address of failure P-CSCF equipment；According to the address of the failure P-CSCF equipment,
Search user equipment (UE) corresponding with the failure P-CSCF equipment；Re-register instruction message is sent to set to the spare P-CSCF
Standby, the re-register instruction message includes the address of the corresponding spare P-CSCF equipment of the UE；
The spare P-CSCF equipment, for receiving the re-register instruction message that the S-CSCF equipment is sent, and to institute
State UE and forward the re-register instruction message so that the UE according to the address of the spare P-CSCF equipment to the spare P-
CSCF equipment re-registers；
It is also included in the S-CSCF equipment：S-CSCF equipment corresponding to called UE in roaming state；
S-CSCF equipment corresponding to the called UE in roaming state, for forwarding the voice Long Term Evolution of calling UE
VoLTE call requests receive the mistake that the visit domain P-CSCF equipment is sent to the visit domain P-CSCF equipment of the called UE
Message by mistake, S-CSCF equipment of the error message for corresponding to the called UE in roaming state determine the visit
Domain P-CSCF equipment is the failure P-CSCF equipment；
It is also included in the S-CSCF equipment：S-CSCF equipment corresponding to calling UE in roaming state；
S-CSCF equipment corresponding to the calling UE in roaming state disappears for receiving the calling UE is sent the 4th
Breath, the 4th message include the address of the failure P-CSCF equipment.
5. system according to claim 4, which is characterized in that further include：Query call conversation control function I-CSCF is set
Standby, home subscriber server HSS；
Comprising the first spare P-CSCF equipment in the spare P-CSCF equipment, the first spare P-CSCF equipment is first
It was found that the spare P-CSCF equipment corresponding to the UE of the failure P-CSCF equipment；
Comprising this domain S-CSCF equipment in the S-CSCF equipment, this domain S-CSCF equipment is to be set with the failure P-CSCF
The standby S-CSCF equipment in the same area；
The first spare P-CSCF equipment, for sending first message to the I-CSCF equipment, the first message includes
The address of the failure P-CSCF equipment, this domain S-CSCF equipment address inquiry instruction；
The I-CSCF equipment, for receiving the first message that the described first spare P-CSCF equipment is sent；Send second
Message receives the address list for this domain S-CSCF equipment that the HSS is returned to the HSS；The second message bag
Include the inquiry instruction of the address of this described domain S-CSCF equipment；The 3rd message is sent to the address column of this described domain S-CSCF equipment
Each S-CSCF equipment in table, the 3rd message include the address of the failure P-CSCF equipment；
The HSS for receiving the second message that the I-CSCF equipment is sent, and is included according in the second message
Inquiry instruction the address list of this domain S-CSCF equipment is sent to the I-CSCF equipment.
6. system according to claim 5, which is characterized in that further include：Domain name system DNS；
The first spare P-CSCF equipment is additionally operable to send the query messages of I-CSCF equipment to the DNS, described in reception
The address information for the I-CSCF equipment that DNS is returned, the query messages of the I-CSCF equipment include the described first spare P-
The domain name and/or IP address of CSCF equipment；
The DNS, for receiving the query messages for the I-CSCF equipment that the described first spare P-CSCF equipment is sent, and root
According to the domain name and/or IP address of the first spare P-CSCF equipment in the query messages to the described first spare P-CSCF equipment
Feed back the address information of the I-CSCF equipment.
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| CN108259327B (en) * | 2016-12-29 | 2020-11-06 | 中国移动通信集团河南有限公司 | VoLTE service recovery method, system and device |
| CN109151989A (en) * | 2017-06-16 | 2019-01-04 | 中国移动通信集团公司 | A kind of method and device for registering VoLTE network |
| WO2019210502A1 (en) * | 2018-05-04 | 2019-11-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for data transmission |
| CN112272936A (en) * | 2018-07-02 | 2021-01-26 | 瑞典爱立信有限公司 | Enhanced P-CSCF restoration procedures |
| CN110677826B (en) * | 2018-07-03 | 2022-04-19 | 中国电信股份有限公司 | Disaster recovery method, system, terminal and computer readable storage medium |
| CN113366801A (en) * | 2019-01-18 | 2021-09-07 | 瑞典爱立信有限公司 | Method and apparatus for continuation of terminating service in IMS communication network |
| CN110121166B (en) * | 2019-05-28 | 2021-09-10 | 中国联合网络通信集团有限公司 | Call establishment method and system |
| CN113162886A (en) * | 2020-01-07 | 2021-07-23 | 中国移动通信集团安徽有限公司 | PBX registration method, equipment and system |
| CN111315009B (en) * | 2020-04-07 | 2022-11-25 | 西安闻泰电子科技有限公司 | IMS network registration method and related device |
| CN114386097B (en) * | 2021-12-30 | 2023-05-02 | 四川爱信诺航天信息有限公司 | User information management method based on cloud architecture and related equipment |
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