CN102857900A - Access method of access equipment to IMS (IP multimedia subsystem) network and AGCF (access gateway control function) and S-CSCF (serving-call session control function) - Google Patents
Access method of access equipment to IMS (IP multimedia subsystem) network and AGCF (access gateway control function) and S-CSCF (serving-call session control function) Download PDFInfo
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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]
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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
- H04L65/1046—Call controllers; Call servers
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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
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/069—Authentication using certificates or pre-shared keys
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- H—ELECTRICITY
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- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
The invention discloses an access method of access equipment to an IMS (IP multimedia subsystem) network and an AGCF (access gateway control function) and an S-CSCF (serving-call session control function) to simplify the registration flow. The method comprises the following steps that: when the access equipment accesses the IMS network through the AGCF, the AGCF decides to create a registration request carrying an authentication pass indication after connecting to the access equipment, and sends the registration request to the S-CSCF through an I-CSCF (interrogating-call session control function), wherein the authentication pass indication is used for the S-CSCF to decide whether to authenticate the access equipment. Compared with the prior art, through the scheme, the AGCF does not need to store the user authentication key information, thus the traditional user registration flow of the fixed-network access equipment accessing the IMS network through the AGCF is simplified. Meanwhile, since the AGCF does not need to store the authentication key, the operation and maintenance cost is reduced.
Description
Technical field
The present invention relates to moving communicating field, be specifically related to a kind of access device by AGCF (Access Gateway Control Function, abbreviation AGCF) method and AGCF and the S-CSCF of access IMS (IP Multimedia subsystem, IP Multimedia System) network.
Background technology
IP Multimedia System (IP Multimedia subsystem, be called for short IMS) be third generation partnership (3rd Generation Partnership Project, abbreviation 3GPP) next generation network (the Next Genenation Network of definition, abbreviation NGN) standard, its distinguishing feature is to have adopted SIP (Session Initiation Protocol, session initiation protocol) system, communication is irrelevant with access, can possess the media service control function separates with bearing capacity, calling separates 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.Major function entity in the IMS system comprises: subscriber equipment (User Equipment, be called for short UE), proxy call conversation control function entity (Proxy call session control Function, be called for short P-CSCF), query call conversation control function entity (Interrogating call session control Function, be called for short I-CSCF), service call session control function entity (Serving call session control Function, be called for short S-CSCF), home subscriber server (Home subscriber Server, be called for short HSS), and application server (Application Server is called for short AS).
The concept of soft switch (Soft Switch, be called for short SS) is progressively to grow up on the IP phone basis in the later stage nineties 20th century, be in communication network by the arrowband to the broadband transition, by circuit switching gradual perfection in the process of packet switching evolution.Soft switch is commercial on a large scale at existing network, and IMS is as the objective network of fixed network and mobile network fusion, and soft switch is inexorable trend to IMS evolution.Traditional fixed network access device, such as MGCP (Media Gateway Control Protocol H.248/, abbreviation MGCP) IAD (Access Media Gateway, be called for short AG), can pass through access gateway control function entity (Access Gateway Control Function, be called for short AGCF) access IMS network, realize the IMS related service, the network architecture is as shown in Figure 1.
In IMS network prior art, traditional fixed network access device such as AG, IAD (Integrated Access Device, integrated access equipment) etc., by AGCF access IMS network, needs AGCF to replace the user to register at the IMS network.The process of AGCF realization user registration may further comprise the steps as shown in Figure 2 in the IMS system at present:
S202, concrete fixed terminal links to each other with the fixed network access device, and traditional fixed network access device such as AG/IAD etc., links to each other with AGCF based on prior art; At present H.248/MGCP/323/V5 the consensus standard supported of AGCF has and waits, and take H.248 as example, AGCF receives service change (ServiceChange) request;
S204, AGCF finishes and being connected of traditional fixed network access device based on prior art, and take H.248 as example, AGCF can send ServiceChange Reply (service change answers) for the ServiceChange request and respond;
S206, AGCF are based on prior art, and structure carries public subscriber identification and private user identity, and registration request is forwarded to I-CSCF based on the registration request (register) of Session Initiation Protocol in the request message;
S208, I-CSCF sends user authentication request (User-Authorization-Request is called for short UAR) message to HSS, and request distributes S-CSCF;
S210, HSS sends user authentication response (User-Authorization-Answer is called for short UAA) message to I-CSCF, returns the ability of S-CSCF name or the S-CSCF of distribution among the UAA;
S212, I-CSCF sends to selected S-CSCF with login request message;
S214, for security consideration, S-CSCF need to carry out authentication to the user, need to send multimedia authentication request (Multimedia-Auth-Request to HSS, be called for short MAR) obtain user's Ciphering Key, AGCF user generally adopts SIP Digest authentication;
S216, HSS sends multimedia authentication response (Multimedia-Auth-Answer is called for short MAA) to S-CSCF, carries Ciphering Key in the response message;
S218, S-CSCF are according to Ciphering Key information, and (401 Unauthorized message) is asked in the structure challenge, and sends to I-CSCF;
S220, I-CSCF is forwarded to AGCF with 401 Unauthorized message;
S222, AGCF uses the local user's who preserves KI information, structure challenge responses registration message, and send to I-CSCF, KI is generally by local configuration or by integrated service and OSS (Business; Operation Support System is called for short BOSS) obtain;
S224 after I-CSCF receives login request message, sends UAR message to HSS, and request distributes S-CSCF;
S226, HSS sends UAA message to I-CSCF, returns the S-CSCF name of distribution among the UAA;
S228, I-CSCF sends to selected S-CSCF with login request message;
S230 after S-CSCF receives login request message, judges user's legitimacy, finishes the authentication to the user, and authentication sends user's configuration data request (Server-Assignment-Request is called for short SAR) by backward HSS;
S232, HSS stores S-CSCF information, and user's subscription data, charging address information sent to S-CSCF by user's configuration data response (Server-Assignment-Answer is called for short SAA) message;
S234, S-CSCF makes up the response message that succeeds in registration, and such as 200OK, and sends to I-CSCF;
S236, AGCF receive the response of succeeding in registration that I-CSCF forwards, the completing user registration.
Be necessary above-mentioned register flow path is improved.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of access device access IMS network method and AGCF and S-CSCF, simplifies register flow path.
For solving the problems of the technologies described above, the invention provides a kind of method of access device access IP Multimedia System (IMS) network, comprising:
Access device is in the process by AGCF (AGCF) access IMS network, AGCF finish with being connected of access device after, the decision-making structure carries authentication by the registration request of indication, described registration request is sent to service call session control function entity (S-CSCF) by query call conversation control function entity (I-CSCF), and described authentication is used for whether this access device being carried out authentication for described S-CSCF decision-making by indication.
Further, described AGCF decision-making structure carries authentication by the registration request of indication, comprise: AGCF is according to the O﹠M strategy of operator, and/or local KI information of whether preserving the access user of described access device, if decision-making need to be carried authentication by indication in registration request, then structure carries authentication by the registration request of indication.
Further, after described S-CSCF received registration request, carry authentication in the described registration request by indication, then if judge: decision-making was not carried out authentication to described access device; Perhaps, according to the O﹠M strategy of operator, and/or whether the network information decision-making of described AGCF place carries out authentication to this access device.
Further, described registration request comprises initial registration request, refresh registration request or de-registration request.
Further, described registration request is sip message, and described authentication places SIP field or the parameter of described registration request by indication.
For solving the problems of the technologies described above, the present invention also provides a kind of AGCF (AGCF) entity, be used for providing access device access IP Multimedia System (IMS) network, described AGCF comprises decision-making module, constructing module and sending module, wherein:
Described decision-making module is used in the process of access device by described AGCF access IMS network, finish with being connected of access device after, whether decision-making constructs is carried the registration request of authentication by indicating;
Described constructing module is used for when described decision-making module decision-making structure carries the registration request of authentication by indication, and structure carries authentication by the registration request of indication;
Described sending module, be used for the registration request of described constructing module structure is sent to service call session control function entity (S-CSCF) by query call conversation control function entity (I-CSCF), described authentication is used for whether this access device being carried out authentication for described S-CSCF decision-making by indication.
Further, whether described decision-making module is to construct for making a strategic decision in the following ways to carry the registration request of authentication by indicating: according to the O﹠M strategy of operator, and/or local KI information of whether preserving the access user of described access device is made a strategic decision.
Further, described registration request is sip message, and described constructing module is to carry the registration request of authentication by indicating for structure in the following ways: SIP the field or the parameter that described authentication are placed described registration request by indication.
For solving the problems of the technologies described above, the present invention also provides a kind of service call session control function entity (S-CSCF), be used for providing access device access IP Multimedia System (IMS) network, described S-CSCF comprises receiver module, judge module and decision-making module, wherein:
Described receiver module is used for receiving the registration request that AGCF (AGCF) sends;
Described judge module is used for judging whether described registration request carries authentication by indication;
Described decision-making module is used for judging that at judge module described registration request carries authentication by indication, and any in the following operation carried out in decision-making:
Described access device is not carried out authentication;
According to the O﹠M strategy of operator, and/or whether the network information decision-making of described AGCF place carries out authentication to this access device.
Compared with prior art, by such scheme, need not to preserve subscriber authentication key information on the AGCF, S-CSCF is by judging that authentication is by indication, finish the authentication to the user, simplified traditional fixed network access device by user's register flow path of AGCF access IMS network.Simultaneously, owing to need not to preserve KI on the AGCF, reduce O﹠M cost, and the upper inconsistent situation of key of AGCF and HSS can not occur.In addition, the at present fixedly access of AG/IAD and AGCF in the technology can guarantee user's fail safe, and the method for simplifying of this paper can not impact the fail safe of access device.
Description of drawings
Fig. 1 accesses IMS network architecture schematic diagram for existing fixed network user;
Fig. 2 is the flow chart of known AGCF access IMS network user register;
Fig. 3 is AGCF access IMS network user register implementation one flow chart;
Fig. 4 is the structural representation of embodiment of the invention AGCF and S-CSCF.
Embodiment
The existing procedure analysis is found because AGCF need to preserve user's registration that IMS user's KI can be finished the IMS network, AGCF need to preserve KI on the one hand, has increased O﹠M cost, caused easily the upper key of AGCF and HSS inconsistent; Present AGCF user's register flow path slightly complicated on the other hand.Consider that traditional fixed network access device by AGCF access IMS network, can guarantee the fail safe of access user, therefore, this paper provides a kind of reduction procedure of access device access IMS network, comprising:
Access device is in the process by AGCF access IMS network, AGCF finish with being connected of access device after, the decision-making structure carries authentication by the registration request of indication, described registration request is sent to S-CSCF by I-CSCF, and described authentication is used for whether this access device being carried out authentication for described S-CSCF decision-making by indication.
Preferably, above-mentioned registration request comprises initial registration request, refresh registration request or de-registration request.
For compatible with prior art, AGCF can be according to the O﹠M strategy of operator, and/or the local conditions such as KI information of whether preserving the access user of this access device make a strategic decision whether carry authentication by indication in registration request, for example, if the KI information of the access user of this access device is not preserved in AGCF this locality, then in registration request, carry this authentication by indication.
AGCF and S-CSCF generally are deployed in trustable network, but for the untrusted network, in order to prevent the deceptive practices in the untrusted network, S-CSCF can receive authentication by after indicating, according to O﹠M strategy and/or visited network information (such as the place network information of AGCF), whether decision-making carries out authentication to this access device, if decision-making need to be carried out authentication to this access device, then ignore authentication by indication information, still this access device is carried out authentication.
Preferably, registration request is sip message, and this authentication can place SIP field or the parameter of registration request by indication, and this SIP field can be an existing SIP field, also can be SIP field of expansion, this parameter also can be existing parameter or spreading parameter.
Said method not only can be used for the fixed network access device, can also be used for mobile access equipment.
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
In order to simplify traditional access device by the register flow path of AGCF access IMS network, solve simultaneously the consistency problem that AGCF preserves subscriber authentication key, the present embodiment flow process may further comprise the steps as shown in Figure 3:
S302, traditional fixed network access device such as AG/IAD etc., links to each other with AGCF based on prior art.Take H.248 as example, AGCF receives the ServiceChange request;
S304, AGCF finishes and being connected of traditional fixed network access device based on prior art, and take H.248 as example, AGCF can send the Reply response for the ServiceChange request;
S306, AGCF structure are based on the registration request of Session Initiation Protocol, and AGCF judges the local KI that does not have the access user of access device, and decision-making is carried authentication by indication in request message, wish that S-CSCF is to user's authentication not;
AGCF is based on the registration request of prior art structure based on Session Initiation Protocol.
Whether AGCF carries authentication by the indication except judging that the local KI of whether preserving the access user of access device is made a strategic decision in request message, can also make a strategic decision according to other O﹠M strategies of operator, if O﹠M strategy regulation is carried out authentication to all access devices, then AGCF does not all carry authentication by indication in request message, if O﹠M strategy regulation is not all carried out authentication to all access devices, then AGCF all carries authentication by indication in request message, perhaps the O﹠M strategy can regulation need to carry out the condition of the access device of authentication, and whether AGCF carries authentication by indication according to the regulation decision-making of O﹠M strategy in request message.
Authentication can be utilized existing SIP field or parameter by indication; also can be SIP field or the parameter of expansion, be set to " auth-done " such as integrity protection (integrity-protected) parameter in authentication (Authorization) head.
S308, AGCF is forwarded to I-CSCF with registration request, carries authentication in the request message by indication;
S310, I-CSCF sends user authentication request UAR to HSS, and request distributes S-CSCF;
S312, HSS sends user authentication response message to I-CSCF, returns the ability of S-CSCF name or the S-CSCF of distribution among the UAA;
S314, I-CSCF is forwarded to selected S-CSCF with login request message, carries authentication in the request message by indication information, need to be delivered to S-CSCF such as integrity-protected parameter information in the Authorization head;
S316, S-CSCF resolve also the identification authentication by indication information, as finding that the integrity-protected parameter be " auth-done " in the Authorization head, think that then subscription authentication passes through, and make a strategic decision and this access device are not carried out authentication;
In other embodiments, S-CSCF can have and ignores this authentication by the ability of indication, and whether this access device is carried out authentication according to O﹠M strategy and/or the network information decision-making of AGCF place.For example the AGCF place network information indicates this AGCF to be in the untrusted network, and then S-CSCF can make a strategic decision authentication is all carried out in the registration of this AGCF request.
S318, S-CSCF sends the request of user's configuration data to HSS;
S320, HSS stores S-CSCF information, and user's subscription data, charging address information sent to S-CSCF by SAA message;
S322, S-CSCF makes up the response message that succeeds in registration, and such as 200OK, and sends to I-CSCF;
S324, AGCF receive the response of succeeding in registration that I-CSCF forwards, the completing user registration.
Realize said method be used for the access device access IMS AGCF of network is provided, as shown in Figure 4, comprise decision-making module, constructing module and sending module, wherein:
Described decision-making module is used in the process of access device by described AGCF access IMS network, finish with being connected of access device after, whether decision-making constructs is carried the registration request of authentication by indicating;
Described constructing module is used for when described decision-making module decision-making structure carries the registration request of authentication by indication, and structure carries authentication by the registration request of indication;
Described sending module is used for the registration request of described constructing module structure is sent to S-CSCF by I-CSCF, and described authentication is used for whether this access device being carried out authentication for described S-CSCF decision-making by indication.
Particularly, whether the decision-making module of this AGCF is to construct for making a strategic decision in the following ways to carry the registration request of authentication by indicating: according to the O﹠M strategy of operator, and/or local KI information of whether preserving the access user of described access device is made a strategic decision.
Preferably, registration request is sip message, and described constructing module is to carry the registration request of authentication by indicating for structure in the following ways: SIP the field or the parameter that described authentication are placed described registration request by indication.
Realize said method be used for the access device access IMS S-CSCF of network is provided, as shown in Figure 4, comprise receiver module, judge module and decision-making module, wherein:
Described receiver module is used for receiving the registration request that AGCF (AGCF) sends;
Described judge module is used for judging whether described registration request carries authentication by indication;
Described decision-making module is used for judging that at judge module described registration request carries authentication by indication, and any in the following operation carried out in decision-making:
Described access device is not carried out authentication;
According to the O﹠M strategy of operator, and/or whether the network information decision-making of described AGCF place carries out authentication to this access device.
Adopt embodiment of the invention method, for traditional fixed network equipment access, AGCF carries authentication by indication information in login request message, and S-CSCF identification authentication need not again the user to be carried out authentication by indication information, directly completing user registration.The method has been simplified AGCF user's register flow path on the one hand, and AGCF need not to preserve subscriber authentication key on the other hand, is easy to the O﹠M of IMS network.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the method for access device access IP Multimedia System (IMS) network comprises:
Access device is in the process by AGCF (AGCF) access IMS network, AGCF finish with being connected of access device after, the decision-making structure carries authentication by the registration request of indication, described registration request is sent to service call session control function entity (S-CSCF) by query call conversation control function entity (I-CSCF), and described authentication is used for whether this access device being carried out authentication for described S-CSCF decision-making by indication.
2. the method for claim 1 is characterized in that:
Described AGCF decision-making structure carries authentication by the registration request of indication, comprising:
AGCF is according to the O﹠M strategy of operator, and/or local KI information of whether preserving the access user of described access device, if decision-making need to be carried authentication by indication in registration request, then structure carries authentication by the registration request of indication.
3. method as claimed in claim 1 or 2 is characterized in that:
After described S-CSCF receives registration request, carry authentication in the described registration request by indication, then if judge:
Decision-making is not carried out authentication to described access device; Perhaps
According to the O﹠M strategy of operator, and/or whether the network information decision-making of described AGCF place carries out authentication to this access device.
4. the method for claim 1 is characterized in that:
Described registration request comprises initial registration request, refresh registration request or de-registration request.
5. the method for claim 1 is characterized in that:
Described registration request is sip message, and described authentication places SIP field or the parameter of described registration request by indication.
6. an AGCF (AGCF) entity is used for providing access device access IP Multimedia System (IMS) network, and described AGCF comprises decision-making module, constructing module and sending module, wherein:
Described decision-making module is used in the process of access device by described AGCF access IMS network, finish with being connected of access device after, whether decision-making constructs is carried the registration request of authentication by indicating;
Described constructing module is used for when described decision-making module decision-making structure carries the registration request of authentication by indication, and structure carries authentication by the registration request of indication;
Described sending module, be used for the registration request of described constructing module structure is sent to service call session control function entity (S-CSCF) by query call conversation control function entity (I-CSCF), described authentication is used for whether this access device being carried out authentication for described S-CSCF decision-making by indication.
7. AGCF as claimed in claim 6 is characterized in that:
Whether described decision-making module is to construct for making a strategic decision in the following ways to carry the registration request of authentication by indicating:
According to the O﹠M strategy of operator, and/or local KI information of whether preserving the access user of described access device is made a strategic decision.
8. such as claim 6 or 7 described AGCF, it is characterized in that:
Described registration request comprises initial registration request, refresh registration request or de-registration request.
9. such as claim 6 or 7 described AGCF, it is characterized in that:
Described registration request is sip message, and described constructing module is to carry the registration request of authentication by indicating for structure in the following ways: SIP the field or the parameter that described authentication are placed described registration request by indication.
10. a service call session control function entity (S-CSCF) is used for providing access device access IP Multimedia System (IMS) network, and described S-CSCF comprises receiver module, judge module and decision-making module, wherein:
Described receiver module is used for receiving the registration request that AGCF (AGCF) sends;
Described judge module is used for judging whether described registration request carries authentication by indication;
Described decision-making module is used for judging that at judge module described registration request carries authentication by indication, and any in the following operation carried out in decision-making:
Described access device is not carried out authentication;
According to the O﹠M strategy of operator, and/or whether the network information decision-making of described AGCF place carries out authentication to this access device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110176011.1A CN102857900B (en) | 2011-06-27 | 2011-06-27 | Access method of access equipment to IMS (IP multimedia subsystem) network and AGCF (access gateway control function) and S-CSCF (serving-call session control function) |
| PCT/CN2012/071091 WO2013000285A1 (en) | 2011-06-27 | 2012-02-14 | Method for access device to access ims network, and agcf and s-cscf |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016165672A1 (en) * | 2015-07-08 | 2016-10-20 | 中兴通讯股份有限公司 | Voice service registration method and device |
| CN106341814A (en) * | 2015-07-08 | 2017-01-18 | 中兴通讯股份有限公司 | Voice service registration method and device |
| CN112953718A (en) * | 2019-11-26 | 2021-06-11 | 中国移动通信集团安徽有限公司 | Authentication method and device for IMS network user and call session control function entity |
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| WO2013000285A1 (en) | 2013-01-03 |
| CN102857900B (en) | 2017-05-24 |
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