CN102340505B - Disaster-tolerance recovery change-back method and system for serving call session control function (S-CSCF) - Google Patents

Disaster-tolerance recovery change-back method and system for serving call session control function (S-CSCF) Download PDF

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Publication number
CN102340505B
CN102340505B CN201110297936.1A CN201110297936A CN102340505B CN 102340505 B CN102340505 B CN 102340505B CN 201110297936 A CN201110297936 A CN 201110297936A CN 102340505 B CN102340505 B CN 102340505B
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cscf
user
control function
hss
redundancy
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CN102340505A (en
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曹刚
倪明
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2012/074594 priority patent/WO2012155769A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Hardware Redundancy (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a disaster-tolerance recovery change-back method for a serving call session control function (S-CSCF). The method comprises that: when receiving a registration message from a user, an interrogating call session control function (I-CSCF) enabling a change-back function queries the initial configuration information of the user by a home subscriber server (HSS); the I-CSCF forwards the registration message to the S-CSCF initially configured by the user; and the S-CSCF authenticates the user by the HSS, and performs registration authentication on the I-CSCF after the user passes the authentication, so that the user can access the S-CSCF. The invention simultaneously discloses a disaster-tolerance recovery change-back system implementing the method for the S-CSCF. By the change-back method provided by the invention, the logout of the user is not required, the S-CSCF is not required to inform the user of change-back, and the change-back of the S-CSCF can be finished automatically; and the method has the advantages of simple implementation steps and short operation time.

Description

The method and system that S-CSCF disaster-tolerant recovery is refunded
Technical field
The present invention relates to IP Multimedia System (IMS, IP Multimedia Subsystem) in refund redundant technique, relate in particular to the method and system that a kind of service call session control function entity (S-CSCF, Serving call sessioncontrol Function) disaster-tolerant recovery is refunded.
Background technology
IP Multimedia System (IMS, IP Multimedia Subsystem) be third generation partnership (3GPP, 3rd Generation Partnership Project) standard of next generation network of definition, its distinguishing feature is to have adopted session initiation protocol (SIP, Session Initiation Protocol) system, communication is irrelevant with access, can possess media service control function separates with bearing capacity, call out and separate with session, application separates with service, business and network detach, and the multi abilities such as mobile network and internet service fusion.
The trend of communication network fusion development has been complied with in the proposition of IMS.Fig. 1 is existing IMS network architecture schematic diagram, as shown in Figure 1, major function entity in IMS system comprises: proxy call conversation control function entity (P-CSCF, Proxy call session control Function), access gateway control function entity (AGCF, Access Gateway Control Function), query call conversation control function entity (I-CSCF, Interrogating call session control Function), service call session control function entity (S-CSCF, Serving call session control Function), home subscriber server (HSS, Home subscriber Server) network architecture.Annexation between said network element specifically can be shown in Figure 1, because function and the annexation thereof of said network element are prior art, repeats no more each network element concrete function and annexation thereof etc. here.Said network element function and annexation thereof, can be referring to IMS system relevant criterion.
In order to improve operation level, operator must provide high-quality, continual service to user.And while causing the S-CSCF network element of current service unavailable due to edition upgrading or device fails etc., network need provide effective disaster tolerance mechanism, and business is switched in other available devices as far as possible, thereby reduce user's traffic lost as far as possible.When S-CSCF edition upgrading complete or fault recovery after, need in time customer service is moved on former S-CSCF equipment, to alleviate the load of other equipment.
In prior art, user, selecting after new S-CSCF registration, will preserve the information of the new S-CSCF of use at HSS, and the business of subsequent user will continue to be linked into this new use S-CSCF equipment.After fault S-CSCF recovers or upgrades, because the S-CSCF information of storing in HSS does not change, user also cannot use the S-CSCF equipment after this recovery or renewal.Only have and send after logout message as user, on HSS, recover user's initial configuration, when user re-registers, just can reselect recover or upgrade after S-CSCF.And the mode of user log off is nullified or notified by S-CSCF in user's active at present, in the time that access user quantity is larger, there is the operating time long, the shortcoming of step complexity.
Summary of the invention
In view of this, the method and system that provide a kind of service call session control function entity disaster-tolerant recovery to refund are provided main purpose of the present invention, can solve fault or upgrade after the S-CSCF restore funcitons of operation the problem of inefficiency when user refunds this S-CSCF.
For achieving the above object, technical scheme of the present invention is achieved in that
The method that service call session control function entity disaster-tolerant recovery is refunded, comprising:
When starting the query call conversation control function entity I-CSCF that refunds function and receiving user's registration message, inquire about described user's initial configuration information by HSS; And described registration message is transmitted to the service call session control function entity S-CSCF of described user initializing configuration;
Described S-CSCF carries out authentication by described HSS to described user, and authentication, by rear and carry out register and authentication to described I-CSCF, makes described user access this S-CSCF.
Preferably, described S-CSCF is fault or upgrades the rear S-CSCF recovering; Described method also comprises:
After described S-CSCF recovers, start the function of refunding of described I-CSCF.
Preferably, described method also comprises:
Described HSS determines when the redundancy S-CSCF of described user access from fault or renewal backs described S-CSCF, notifies described redundancy S-CSCF to stop registration to described user;
Described redundancy S-CSCF removes described user's log-on message.
Preferably, described method also comprises:
After described I-CSCF determines that the user on described S-CSCF all refunds, close the function of refunding of self.
Preferably, described method also comprises:
After described S-CSCF fault, the user of the described S-CSCF of access is registered by described redundancy S-CSCF, and maintain described user's current business.
The server name Server-Name of the initial configuration that preferably, comprises described user in described initial configuration information and/or the attribute information of server performance Server-Capability.
The system that service call session control function entity disaster-tolerant recovery is refunded, comprises HSS, I-CSCF and S-CSCF; Described system also comprises:
Start unit, for starting the function of refunding of described I-CSCF;
I-CSCF, in the time receiving user's registration message, inquires about described user's initial configuration information by HSS; And described registration message is transmitted to the S-CSCF of described user initializing configuration;
S-CSCF, for by described HSS, described user being carried out to authentication, authentication, by rear and carry out register and authentication to described I-CSCF, makes described user access this S-CSCF.
Preferably, described S-CSCF is fault or upgrades the rear S-CSCF recovering;
Described start unit is further used for, and after described S-CSCF recovers, starts the function of refunding of described I-CSCF.
Preferably, described system also comprises: redundancy S-CSCF;
Described HSS is further used for, and determines described user from fault or the redundancy S-CSCF of access upgrading while backing described S-CSCF, notifies described redundancy S-CSCF to stop registering to described user;
Described redundancy S-CSCF, for removing described user's log-on message.
Preferably, described system also comprises:
Closing unit, after all refunding, closes the function of refunding of described I-CSCF for the user on definite described S-CSCF.
In the present invention, when determining fault or upgrading after the S-CSCF restore funcitons of operation, needn't be nullified from redundancy S-CSCF voluntarily by user, also needn't utilize S-CSCF notice user log off, but open the function of refunding of I-CSCF, by I-CSCF achieve a butt joint into user nullify operation, thereby make the user who is registered to redundancy S-CSCF re-register the S-CSCF of fault recovery, thereby realize the load balancing between S-CSCF.Technical scheme of the present invention, by making I-CSCF increase the new function of refunding, determining after the S-CSCF functional rehabilitation of fault or renewal, what start I-CSCF refunds function, and the operation that can realize user and back the S-CSCF of fault recovery, without user log off, also notify user to refund without S-CSCF, can automatically complete S-CSCF and refund work, there is implementation step simple, the advantage that the operating time is short.
Brief description of the drawings
Fig. 1 is existing IMS network architecture schematic diagram;
Fig. 2 is the flow chart that in the IMS of the embodiment of the present invention, S-CSCF disaster-tolerant recovery is refunded.
Embodiment
Basic thought of the present invention is, when determining fault or upgrading after the S-CSCF restore funcitons of operation, needn't be nullified from redundancy S-CSCF voluntarily by user, also needn't utilize S-CSCF notice user log off, but open the function of refunding of I-CSCF, by I-CSCF achieve a butt joint into user nullify operation, thereby make the user who is registered to redundancy S-CSCF re-register the S-CSCF of fault recovery, thereby realize the load balancing between S-CSCF.Technical scheme of the present invention, by making I-CSCF increase the new function of refunding, is determining after the S-CSCF functional rehabilitation of fault or renewal, starts the function of refunding of I-CSCF, the operation that can realize user and back the S-CSCF of fault recovery.
In the present invention, first open the function of refunding of all I-CSCF in this territory.
The user who has succeeded in registration on P-CSCF/AGCF sends registration message to I-CSCF, this territory I-CSCF receives the registration message that this territory user sends, do not inquire about presently used S-CSCF information, but inquire about the attribute such as Server-Name or Server-Capability of this user's initial configuration to HSS; I-CSCF uses the attribute information such as Server-Name or Server-Capability in this initial configuration information, makes user carry out the flow process of initial registration, determines the available S-CSCF recovering from fault, and registration message is issued to this S-CSCF.
S-CSCF receives after registration message, by HSS, user is carried out to corresponding initial registration processing.
The location registration process of HSS completing user in the S-CSCF of fault recovery, and complete cancellation work on other S-CSCF by normal flow.
When all users of former access on fault S-CSCF back after the S-CSCF of fault recovery, close and refund function at all I-CSCF in this territory.
The function of refunding of I-CSCF mainly refers to, that is to say, when I-CSCF receives after the user's who has succeeded in registration on P-CSCF/AGCF registration message, be not directly to carry out location registration process to current enabled S-CSCF, but to the S-CSCF information using in the initial configuration information of HSS inquiring user, make user be registered to the S-CSCF using in user's initial configuration information, thereby realize refunding of user.
Below in conjunction with concrete example, technical solution of the present invention is further elaborated.
Fig. 2 is the flow chart that in the IMS of the embodiment of the present invention, S-CSCF disaster-tolerant recovery is refunded, and as shown in Figure 2, below in conjunction with Fig. 1, S-CSCF disaster-tolerant recovery returning method in IMS is described in detail.
The applied environment of this example is that user, according to the strategy of initial registration, registers and use service business at S-CSCF1; When S-CSCF1 fault maybe needs to upgrade, user is switched to S-CSCF2 and registers and use service business; S-CSCF1 recovers from fault, need to be by service returning to S-CSCF1.
The method that in this example IMS, S-CSCF disaster-tolerant recovery is refunded specifically comprises the following steps:
S202, the function of refunding of opening I-CSCF.
Determine that S-CSCF1 recovers from fault, when service returning need to be gone up to S-CSCF1, the function of refunding of opening I-CSCF.Here, the unlatching of refunding function of I-CSCF, can open automatically according to certain strategy, also can be by administrative staff by manual set-up mode unlatching etc.
S204, the user of the upper registration of P-CSCF/AGCF initiates registration request to I-CSCF.
S206, because having started, I-CSCF refunds function, therefore I-CSCF does not inquire about presently used S-CSCF information, but send user-authorization-request UAR to HSS, wherein User-Authorization-Type=2, requires HSS to return to the attribute information such as Server-Name or Server-Capability of initial configuration.
S208, HSS returns to user-authorization-answer message to I-CSCF, comprises the information of the required user's of I-CSCF initial configuration in this user-authorization-answer message.
S210, I-CSCF, according to the Server-Name in user's initial configuration information or Server-Capability information, sends to user's registration request the S-CSCF1 of fault recovery.
S212, S-CSCF1 receives after user's registration request, initiates multimedia authentication request to HSS, obtains corresponding authentication information.
S214, HSS returns to user's authentication information.
S216, S-CSCF receives after the user's that HSS returns authentication information, returns to 401 error codes to I-CSCF, carries out corresponding register and authentication processing.
S218, HSS determines that user is backed after S-CSCF1 by S-CSCF2, sends registration termination request to S-CSCF2.
S220, S-CSCF2 accepts after registration request, removes user related information, and returns to Registration Termination Answer to HSS.
S222, Radix Angelicae Sinensis belongs to the upper user of S-CSCF1 all to be backed after this S-CSCF1, closes the function of refunding of I-CSCF, and refunds flow process thereby complete.
In figure, only described with technical solution of the present invention and realized relevant main flow process, other related procedure handling processes are owing to belonging to prior art, associated and little with the realization of technical solution of the present invention, omit for convenience of description.
Adopt the inventive method, just can be by user's service returning to the S-CSCF network element of fault recovery without user log off, have simple to operate, the advantage that influence time is short.
The present invention has recorded the system that a kind of service call session control function entity disaster-tolerant recovery is refunded simultaneously, comprises HSS, I-CSCF and S-CSCF; Described system also comprises:
Start unit, for starting the function of refunding of described I-CSCF;
I-CSCF, in the time receiving user's registration message, inquires about described user's initial configuration information by HSS; And described registration message is transmitted to the S-CSCF of described user initializing configuration;
S-CSCF, for by described HSS, described user being carried out to authentication, authentication, by rear and carry out register and authentication to described I-CSCF, makes described user access this S-CSCF.
The above-mentioned S-CSCF of stating is fault or upgrades the rear S-CSCF recovering;
Described start unit is further used for, and after described S-CSCF recovers, starts the function of refunding of described I-CSCF.
The system that service call session control function entity disaster-tolerant recovery of the present invention is refunded also comprises: redundancy S-CSCF;
Described HSS is further used for, and determines described user from fault or the redundancy S-CSCF of access upgrading while backing described S-CSCF, notifies described redundancy S-CSCF to stop registering to described user;
Described redundancy S-CSCF, for removing described user's log-on message.
The system that service call session control function entity disaster-tolerant recovery of the present invention is refunded also comprises:
Closing unit, after all refunding, closes the function of refunding of described I-CSCF for the user on definite described S-CSCF.
The system that the service call session control function entity disaster-tolerant recovery of the embodiment of the present invention is refunded, be on the basis of existing IMS system architecture, and the processing capacity of I-CSCF, S-CSCF and HSS etc. has been carried out improving and realized.Wherein, major function and the annexation etc. thereof of each network element, can understand referring to existing IMS system architecture standard, about the improvement function of said network element, the associated description of the method that can refund referring to aforementioned service call session control function entity disaster-tolerant recovery and understanding.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.

Claims (10)

1. the method that service call session control function entity disaster-tolerant recovery is refunded, is characterized in that, described method comprises:
When starting the query call conversation control function entity I-CSCF that refunds function and receiving the user's who has succeeded in registration on proxy call conversation control function entity P-CSCF/ access gateway control function entity AGCF registration message, inquire about described user's initial configuration information by home subscriber server HSS; And described registration message is transmitted to the service call session control function entity S-CSCF of described user initializing configuration;
Described S-CSCF carries out authentication by described HSS to described user, and authentication, by rear and carry out register and authentication to described I-CSCF, makes described user access this S-CSCF.
2. method according to claim 1, is characterized in that, described S-CSCF is fault or upgrades the rear S-CSCF recovering; Described method also comprises:
After described S-CSCF recovers, start the function of refunding of described I-CSCF.
3. method according to claim 1, is characterized in that, described method also comprises:
Described HSS determines when the redundancy S-CSCF of described user access from fault or renewal backs described S-CSCF, notifies described redundancy S-CSCF to stop registration to described user;
Described redundancy S-CSCF removes described user's log-on message.
4. method according to claim 3, is characterized in that, described method also comprises:
After described I-CSCF determines that the user on described S-CSCF all refunds, close the function of refunding of self.
5. method according to claim 4, is characterized in that, described method also comprises:
After described S-CSCF fault, the user of the described S-CSCF of access is registered by described redundancy S-CSCF, and maintain described user's current business.
6. according to the arbitrary described method of claim 1 to 5, it is characterized in that, in described initial configuration information, comprise described user's the server name Server-Name of initial configuration and/or the attribute information of server performance Server-Capability.
7. the system that service call session control function entity disaster-tolerant recovery is refunded, comprises home subscriber server HSS, query call conversation control function entity I-CSCF and service call session control function entity S-CSCF; It is characterized in that, described system also comprises:
Start unit, for starting the function of refunding of described I-CSCF;
I-CSCF, in the time receiving the user's who has succeeded in registration on proxy call conversation control function entity P-CSCF/ access gateway control function entity AGCF registration message, inquires about described user's initial configuration information by HSS; And described registration message is transmitted to the S-CSCF of described user initializing configuration;
S-CSCF, for by described HSS, described user being carried out to authentication, authentication, by rear and carry out register and authentication to described I-CSCF, makes described user access this S-CSCF.
8. system according to claim 7, is characterized in that, described S-CSCF is fault or upgrades the rear S-CSCF recovering;
Described start unit is further used for, and after described S-CSCF recovers, starts the function of refunding of described I-CSCF.
9. system according to claim 8, is characterized in that, described system also comprises: redundancy S-CSCF;
Described HSS is further used for, and determines described user from fault or the redundancy S-CSCF of access upgrading while backing described S-CSCF, notifies described redundancy S-CSCF to stop registering to described user;
Described redundancy S-CSCF, for removing described user's log-on message.
10. system according to claim 9, is characterized in that, described system also comprises:
Closing unit, after all refunding, closes the function of refunding of described I-CSCF for the user on definite described S-CSCF.
CN201110297936.1A 2011-09-28 2011-09-28 Disaster-tolerance recovery change-back method and system for serving call session control function (S-CSCF) Active CN102340505B (en)

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PCT/CN2012/074594 WO2012155769A1 (en) 2011-09-28 2012-04-24 Method and system for s-cscf disaster recovery rewinding

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CN102340505B (en) * 2011-09-28 2014-12-10 中兴通讯股份有限公司 Disaster-tolerance recovery change-back method and system for serving call session control function (S-CSCF)
CN104767751A (en) * 2015-04-02 2015-07-08 大唐移动通信设备有限公司 Session control method and device
CN106209473B (en) * 2016-07-25 2019-02-15 中国联合网络通信集团有限公司 A kind of method and system that disaster tolerance is refunded
CN106302077B (en) * 2016-08-18 2019-12-13 中国联合网络通信集团有限公司 Disaster recovery rewinding method and device
CN109995765A (en) * 2019-03-11 2019-07-09 河北远东通信系统工程有限公司 A kind of dual-homed register method of IMS network AGCF
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