CN101043701A - Method for IP multimedia subsystem to provide register and call continuousness for mobile circuit domain user and system thereof - Google Patents

Abstract

The disclosed register method for CS user by IP multimedia subsystem comprises: a. once detecting the relative CS register affair, the RPF selects to query and call the I-CSCF, and sends REGISTER message for SIP signaling; b. the latter receives REGISTER message, and queries the CS assigned user register state to HSS; c. the latter generates the temporary data of the CS assigned user in IMS network, and returns the capacity of S-CSCF to the I-CSCF; and d. the latter selects proper S-CSCF according to the capacity message to transmit the REGISTER message, the S-CSCF transmits the request to HSS to register in IMS network, and the CRPF completes the CS register.

Description

A kind of IP Multimedia System provides the method and the system thereof of registration and call proceeding for walking circuit territory user

Technical field

The present invention relates to IMS (IP Multimedia System) technical field, specifically, relate to the technology that walking circuit territory contracted user inserts the IMS network.

Background technology

Public land mobile net network (PLMN) facility of 3rd Generation Partnership Project (3GPP) definition can logically be divided into core net (CN) and Access Network (AN) two parts.Core net (CN) can be divided into circuit domain (CS Domain), packet domain (PS Domain) and IP Multimedia System (IMS).

Wherein, circuit domain comprises the entity of a series of core net, and these entities comprise voice, circuit types data, fax etc. for the business that the user provides circuit switching (CS) type.The exemplary entity of circuit domain comprises the MSC (mobile switch) that is responsible for handling the call signaling complete connection, be responsible for the wireless medium gateway (WMG) that medium connect and speech coding is changed, preserve the VLR (VLR Visitor Location Register) of user's current location information and business datum, preserve the HLR (attaching position register) of user contracting data and current service VLR information, preserve the EIR (Equipment Identity Register equipment identity register) of customer equipment identification and the AUC (AUC) of generation authorization data etc.

In order to guarantee that the user uses the business of circuit domain, define a cover in the 3GPP agreement and handled the mechanism that walking circuit territory user is linked into core net, this mechanism makes network can obtain user position information, and finishes the network access security protection.Walking circuit territory user can be at mobile phone power-on, perhaps roams into new MSC/VLR service area, or the renewal of periodic position, or needs network processes to insert request when calling business.The network operator can determine to use in different accesses or do not use some to insert relevant process according to certain strategy, as authentication process, ciphering process, distribution T MSI process etc.The typical access procedure of 3G circuit domain user is as shown in Figure 1:

Wherein: the sign that user's access is used in the CS territory has: mobile subscriber ISDN (integrated services digital network) number (MSISDN), IMSI International Mobile Subscriber Identity (IMSI), Temporary Mobile Subscriber Identity (TMSI).

Wherein IMSI is that the sign of unique identification user in the mobile network in the whole world and user's Mobile Subscriber International ISDN Number are bound when signatory.

Mobile subscriber ISDN number (MSISDN) is according to E.164 code scheme H and E.213 standard distribution of International Telecommunication Association.

The GT (global title) that MSISDN can be used as SCCP (signaling connection control protocol) locatees the affiliated HLR of this user.During addressing according to the CC+NDC of number or add the HLR that part SN just can navigate to service-user.The sign of registering relevant HLR with the user can be to meet the E.164 HLR number of standard, perhaps HLR id (HLR sign).HLR number is identical with the MSISDN form; HLR id is made up of the several sections of IMSI, i.e. " former positions of MCC+MNC+MSIN ".

The user will use IMSI to insert for the first time when certain MSC/VLR service area inserts in the GSM/WCDMA technology, uses the interim TMSI that distributes to insert generally speaking.Can guarantee that like this listener-in can not determine user's position by unique identification.Because TMSI is a local effectively sign in the MSC/VLR service area, must and Location Area Identification (LAI) use together, all redistribute when the network operator can stipulate to insert at every turn.So with respect to IMSI, TMSI is called as temporary mark.In CDMA technology, the user also uses IMSI to insert.

When the MSC/VLR of core net (MSC and VLR close to be located at together) entity receives that the user position update request represents that needs insert, need authentication just to go HLR/AUC (general HLR and AUC close and establish) request to distribute authentication vector (AV) if judge this user, AUC can generate the some groups of authentication vector that ordinal relation is arranged according to user's IMSI.One group of such authentication vector comprises＜random challenge RAND, authentication-tokens AUTN, encryption key CK, Integrity Key IK, Authentication Response RES〉five elements, HLR returns to MSC/VLR with all authentication vector of these generations in response.MSC/VLR selects first untapped AV after receiving these AV group, removes to send to RNC (Chinese note) side behind the RES wherein and require to initiate authentication.After RNC removes the CK and IK of remaining AV, send the USIM (global Subscriber Identity Module) of authentication request to mobile phone (ME).USIM in the mobile phone according to when the user is signatory, distribute with network in AUC cipher key shared (K) and the RAND that receives, re-use the different algorithm of sharing with network and can calculate CK in this authentication vector group, IK, RES respectively.In addition, mobile phone calculates MAC and more consistent with the MAC value of receiving according to RAND, AUTN and cipher key shared K from AUTN (authentication-tokens), just can judge that whether network is oneself to want the network that inserts.If these all pass through, then the RES that calculates of mobile phone loopback is to MSC/VLR.MSC/VLR relatively should value and the AV of own preservation in RES whether identical, think then that as if identical mobile phone identification passes through, be validated user.The mechanism of this user and network bi-directional authentication is exactly AKA.

After the authentication success, network may determine to redistribute TMSI, reduces the number of times that uses IMSI with assurance on wave point as far as possible, guarantees that user position information is difficult to victim prediction and tracking.Before distribution T MSI, must finish security process at wave point, be that MSC/VLR order RNC starts security process, RNC will with the radio interface channels of mobile phone in use CK that signaling message is encrypted, make and only know that CK could correctly parse correct signaling message, use IK that whole signaling message is carried out integrality afterwards and calculate, result of calculation is attached to the afterbody of message.

Mobile phone receives that the IK that this order back calculates when using authentication carries out same calculating; and result of calculation and the result of calculation that is attached to the transmit leg of this signaling message afterbody compared; if unanimity as a result; represent that then this signaling message was not modified, show the integrity protection success of this signaling.Use the CK calculate that message is decrypted afterwards, if successfully parse signaling message then the informing network security process finish.The security process that mobile phone sends is finished signaling message also needs to use CK to carry out the encryption identical with network side with IK.After MSC/VLR receives this message, use the decrypting process identical with mobile phone, if correctly parse signaling message, show that then the safeguard protection process has successfully started.After this all send to MSC/VLR and all must use CK and IK to encrypt from the signaling that MSC/VLR receives.

After the security process success, MSC/VLR distributes new TMSI and send to mobile phone in the encrypted tunnel of safety, and mobile phone is deleted old TMSI after receiving newly assigned TMSI, and sends acknowledge message to MSC/VLR.After MSC/VLR receives acknowledge message, delete old TMSI, use new TMSI to upgrade this user's data.Mobile phone uses this sign to be linked into the network call business next time, comprises the new process of position root.

The access procedure of GSM user's access procedure and 3G circuit domain user is similar, as shown in Figure 2:

Its difference performance is as follows:

There is not mobile phone among the GSM to network authentication, so there is not the AUTN parameter in its authentication vector;

The integrity protection that does not have data among the GSM is not so there is the IK parameter in its authentication vector;

The encryption key Kc of GSM has only 64, and the KC that uses among the 3G grows 128, and the cryptographic algorithm of using is also inequality, and the Cipher Strength of 3G is higher;

The Authentication Response SRES of GSM and the RES generating algorithm among the 3G and length are also inequality;

As can be seen, there is the cover security mechanism of oneself in the walking circuit territory, and safety assurance to a certain degree can be provided from above user's access procedure.And the security mechanism of 3G subscription is the enhancing on GSM user's security mechanism, we can say that basic process is identical, just increased some new security features therein, and the 3G security mechanism is a kind of smooth evolution of 2G mechanism.

IMS (IP Mutimedia Subsystem IP Multimedia System) is the subsystem that is superimposed upon support IP multimedia service on the existing packet domain (PS Domain) that 3GPP proposes at Release 5 versions.Its core characteristics be adopt Session Initiation Protocol and with the independence that inserts, IMS supports the mobile access way of 2G and 3G at present, can't support fixedly access way.Under the development trend of the network integration, 3GPP, ETSI (ETSI) and ITU-T are in the network integration scheme of research based on IMS, purpose is to make IMS become general-purpose platform based on the SIP session, support plurality of access modes fixing and that move simultaneously, realize the fusion of fixed network and mobile network.

Main functional entity comprises the home subscriber server HSS of call conversation control entity CSCF, the application server AS that miscellaneous service logic control function is provided and the centralized management user contracting data of functions such as control user registration, session control among the IMS.The user inserts IMS by current location agent node P-CSCF (Proxy-Call Session Control Function entity), and home domain S-CSCF (service-call session control function entity) finishes session and business triggers control and controls mutual with the business of AS (application server).

The user of each IMS business of having contracted distributes one or more private user identity by home network operator, uses in registration, mandate, management and charging process, and is generally externally not open; Each IMS user also has one or more public user identity, and is externally open, uses in the conversation procedure that uses all kinds of business, identifies oneself when being used for other telex networks, finds the other side.

Access process IMS user can be divided into: user's initial registration, user heavily register, the user goes registration, the event subscription that heavily registration, the network that network is initiated initiated after going to register and register etc.

In the Client-initiated registration, the domain name that comprises an IMPU (IP multimedia public identify), an IMPI (IP multimedia private identity) and user attaching territory at least must be arranged, other parameter comprises the authentication capability of UE, the IP address of terminal etc.

Client-initiated initial registration flow process is as shown in Figure 3:

The user uses Register (registration) message of the domain name composition SIP (Session initiation Protocol) of IMPU, IMPI, Contact (contact) address and home domain that the ISIM (IMS subscriber identification module) of oneself preserves, encryption, integral algorithm option information that this message has also comprised user's the type of Access Network and identification information, oneself supported, and in order to set up the required port information of Security Association (SA:SecurityAssociation), time-out time etc. with P-CSCF.Send a message to the default addresses for use of the P-CSCF that UE finds then in the P-CSCF discovery procedure.

After P-CSCF receives that user's sign and other necessary information are preserved in the back, according to the address of the I-CSCF (interrogation-call session control function entity) of the service in the inquiry of the domain name user attaching territory of its home domain, and send to the I-CSCF address that inquires after forming new Register message bag (information that contains access zone network).

I-CSCF as if unregistered, then can select the register requirement of a S-CSCF process user according to user's the privately owned login state that is identified to the HSS inquiring user, and behind the selected S-CSCF, I-CSCF just sends this registration message to be continued to handle to S-CSCF.

After S-CSCF receives this registration message, check that the user is an initial registration, the HSS that arrives request distributes the authentication vector group for the user.The authentication vector composition and the composition of this authentication vector and above-mentioned 3G subscription are all identical, are the five-tuple vector.S-CSCF selects one group of vector and removes the XRES item after receiving the allocation result of HSS in 401 message of SIP, send to P-CSCF by I-CSCF again.The header field WWW-Authenticate of most critical comprises following message (cryptographic algorithm of authentication random number RAND, authentication-tokens AUTN, network using such as AKAv1-MD5, Integrity Key IK and encryption key CK etc.) in 401 message:

After P-CSCF removes CK, IK in the authentication vector, choose the optimization algorithm of all supporting according to encryption of oneself and the option information of selection of integral algorithm ability and UE, and the parameter of Security Association among the P-CSCF, in 401 message, comprise these parameters and initiate the authentication challenge to UE.

KI K that UE basis and network are shared and the RAND that receives calculate CK, IK, RES, may handle CK according to the cryptographic algorithm of selecting again.The mode that the UE basis is identical with the 3G circuit domain is carried out authentication to network, and UE sets Security Association according to the relevant consultation parameter that P-CSCF returns afterwards.The port communication of the alliance all safe in utilization of all signalings afterwards definition.UE forms new REGISTER message after calculating the RES of network needs, through sending to P-CSCF by the escape way with P-CSCF behind encryption and the integrity protection.Crucial header field Authorization comprises following message: cryptographic algorithm that the authentication random number RAND that UE calculates, authentication-tokens AUTN, UE select and the authenticating result RES that calculates.

P-CSCF deciphers after receiving above-mentioned message accordingly, represents that then network and UE have finished secret and integrity protection if can parse message, and then through I-CSCF authenticating result is sent to S-CSCF.S-CSCF receives after the Register message whether RES wherein is consistent with the RES that preserves before, passes through as if the consistent authentication of representing.The success of S-CSCF notice HSS authentication, and the data of download user.Send 200OK to UE then and represent to succeed in registration, what wherein comprise the network appointment is the term of validity duration of unit with the second.S-CSCF may be initiated to the third-party registration of the AS of appointment in the trigger condition according to the trigger condition in the user data in addition.This moment, P-CSCF represented that to header field Authorization increase integrity protection mark user signaling has been subjected to integrity protection.

P-CSCF receives the registration event package flow process that is initiated to this UE of subscription of S-CSCF after the 200Ok response of register requirement, subscribe to successfully after, S-CSCF returns to the login state of P-CSCF oneself.

UE receives the registration event package flow process that is initiated to the subscription oneself of S-CSCF behind the 200Ok, subscribe to successfully after, S-CSCF returns to the login state of UE.

As shown in Figure 4: UE was initiated to the heavily registration of network before term of validity lost efficacy, and showed that to network integrity protection supports.S-CSCF will judge whether the user is re-authenticated.If do not need authentication, then return 200OK and give UE.

UE UE in REGISTER message will represent that the duration parameters expires (maturity value) of term of validity is changed to 0.S-CSCF will notify HSS, and the user has gone to have registered.If UE does not have the trigger condition of other unregistered state, will be among the S-CSCF not in any information that keeps the user.

As shown in Figure 4: the S-CSCF in the network can be at any time can be according to the network operator the heavily registration of initiation to UE be set.Heavily registration is to send sip message NOTIFY (notice) notice UE's.After the user initiated heavily registration, whether the decision of network based operation strategy carried out authentication to the user again.

After S-CSCF sends NOTIFY, shorten the registration lifetime of the corresponding IMPI of user, if UE does not initiate heavy registration process during this period, then S-CSCF initiates to go registration process.

As shown in Figure 5: when the user nullifies or inner this user's of S-CSCF registration timer is overtime will go registration process by the network initiation when waiting S-CSCF internal event to take place at HSS.According to network whether want to allow UE initiate again the registration, thereby in NOTIFY with different parameters.

ENUM is telephone number mappings work group (the Telephone Number Mappingworking group of IETF, abbreviation ENUM) agreement---the RFC2916 of definition, the exercise question of RFC2916 is " E.164 number and a domain name system (E.164Number and DNS) ".It has defined the method in number translated E.164 is placed on dns server for the domain name form the database, each domain name that is transformed by number E.164 can corresponding a series of unified resource sign (Uniform ResourceIdentifier), thereby makes the E.164 telephone number of international uniform become the network address that can use in packet network.

According to the different demands that it satisfied, can be divided into IMS compatible circuit territory terminal mode and IMS domain simulating circuit mode during IMS network insertion circuit domain user.The IMS compatibility mode requires network to provide professional in the mode of standard I MS, and user's business experience may change, and the original professional of user may universal succession; The network that IMS domain simulating circuit mode requires to insert is inherited whole business of original circuit domain, and user's business experience may remain unchanged.

Circuit domain user access IMS network is divided into following scene according to this user's ownership: the circuit domain user that the circuit domain user of signatory IMS network is linked into IMS network and signatory CS network is linked into the IMS network because of roaming.But registration when mobile CS network contraction user is linked into the IMS network of compatible circuit territory terminal and call proceeding problem also have a following problem:

Circuit domain user roams to the registration problem behind the IMS network: 1) walking circuit territory user uses when circuit domain is registered is 04.08 among the circuit domain signaling of wave point such as GSM etc., and the user registers the SIP signaling of use based on packet network among the IMS, so circuit domain user can not directly go registration to IMS; 2) circuit domain user of signatory CS network does not have subscription data in the IMS network.Solve user's registration and then relate to following technology point: the detection of customer registration affair, the circuit domain user sign of signatory CS network and the mapping of IMS domain identifier; The mapping of circuit domain registration process signaling and SIP registration process signaling; The newly-increased part of the relative circuit domain of IMS registration process is shone upon in circuit domain; Each entity in the IMS network is to the identification and the special processing of the circuit domain user of signatory CS; The generation of signatory CS lattice network territory user ephemeral data in the IMS network; Obtaining and conversion etc. of signatory CS lattice network territory subscription authentication data and business datum.

The circuit domain user of signatory CS is behind the IMS network registry, its calling procedure is identical with standard I MS user's flow processing, but when doing, this user also has following problem when called in the IMS network: during 1) as this user of other customer call, circuit-domain network must obtain roaming number just can further be routed to the gateway exchange of handling this roaming number, and the IMS network does not provide the entity of roaming number among the similar CS.2) suppose that the roaming number problem solves, how the roaming number that also has IMS and distributed is addressed to real called problem in the IMS network.Address the above problem and then relate to following technology point: the distribution of circuit domain roaming number among the IMS; The conversion of roaming number that IMS distributed and the IMPU of this user in the IMS network.

U.S. Patent Publication No. US20020110104A1 " Hybrid media gateway controlfunction providing circuit-switched access to a packet-switched radiotelecommunications network ", (the mixed-media gateway control function that provides circuit switching to be linked into packet-switched wireless communication network) discloses a kind of by mixing MGCF, (MGCF) adaptive walking circuit signaling is to the technology of the architecture and method in IMS territory.Wherein used the MGCF that mixes the circuit domain control signaling has been mapped to SIP control signaling, finished the user and insert the IMS territory in circuit domain.Above-mentioned patent has provided the framework and relevant flow and method that has the walking circuit territory terminal access to IMS network of subscription data at the IMS network.But use the framework or the flow process of this patent, can not solve at the IMS network does not have the circuit domain terminal of subscription data to insert the problem of IMS network, more can not solve such circuit domain terminal provides call proceeding at the IMS network problem.

In addition, U.S. Patent Publication No.: US20030027569A1; Title: " Communicationsystem for providing roaming between an internet protocol multimediasystem and a circuit-switched domain " (be provided at IP multimedia system unify the communication system of circuit domain internetwork roaming) discloses a kind of walking circuit territory terminal use realizes roaming at IMS network and mobile CS network technology.

Wherein solve the circuit domain contracted user and in IMS, used iMSC during registration problem the registration of circuit domain, the processes such as control, calling service of calling out are mapped to the SIP signaling procedure of standard, and to specify a default S-CSCF be that this user serves.And the mode that proposes when processing circuit domain contracted user business datum is: the circuit domain subscription data by S-CSCF obtains the user provides professional when roaming in the IMS territory for this user.

When wherein solving the call proceeding problem of circuit domain contracted user in the IMS network with the corresponding dual mode that proposed of registration: one, when this user when registration just by PSTN (public switch telephone network) number related of IMS network allocation with IMS network entity MGCF, offer GMSC by IMSC when needing route being called into GMSC (critical point mobile switch), thereby finish called connection; Its two, by S-CSCF when GMSC asks, distribute one with the related PSTN number of IMS network entity MGCF medium, finish called connection again.

But its circuit domain contracted user does not provide the concrete user radio circuit domain signaling and the conversion method and the flow process of SIP signaling in the solution of IMS network registry, does not have exploitativeness; In addition, the method for authenticating of its circuit domain contracted user when IMS network registry scheme does not provide the circuit domain contracted user at the IMS network registry reduced the fail safe of IMS network; Its IMS network all is just to have distributed roaming number when registration for the circuit domain contracted user provides call proceeding and professional dual mode, can causes the anxiety of roaming number resource; Its circuit domain contracted user provides call proceeding and professional mode two to require the intercommunication of S-CSCF maintenance and circuit-domain network at IMS, must use the MAP interface, need complexity and planning and maintenance cost that S-CSCF realizes have therefore been increased for it disposes the SS7 network address.

Summary of the invention

The invention provides a kind of IP Multimedia System and provide the registration and the method and the system thereof of call proceeding, to solve the problem that mobile CS contracted user inserts the registration and the call proceeding of IMS network for walking circuit territory contracted user.

For achieving the above object, the invention provides following technical scheme: a kind of IP Multimedia System provides process registration for walking circuit territory contracted user, and described method comprises the steps:

A, detect walking circuit territory CS contracted user and register relevant incident after, trade mark agency functional entity RPF selects to send the registration REGISTER message of SIP signaling to it behind the interrogation-call session control function entity I-CSCF;

B, I-CSCF receive described REGISTER message is inquired about login state from described CS contracted user to home subscriber server HSS;

C, HSS generate the ephemeral data of described CS contracted user at the IMS network, and return service-call session control function entity S-CSCF ability information to I-CSCF;

D, I-CSCF select S-CSCF according to described S-CSCF ability information, and transmit described REGISTER to it and ask, S-CSCF is forwarded to HSS with described request, and HSS finishes the registration at the IMS network, and circuit domain trade mark agency functional entity CRPF finishes the circuit domain registration.

Wherein step a specifically comprises:

A1, RPF are mapped as detected mobile CS contracted user circuit domain registered events IMS territory registered events and mobile CS contracted user's circuit domain sign are mapped as the IMS domain identifier;

A2, RPF select to send the registration REGISTER message of SIP signaling to it behind the I-CSCF according to described IMS domain identifier;

Wherein step b is specially: I-CSCF inquires about its login state according to described mobile CS contracted user's IMS domain identifier to HSS.

Wherein the described circuit domain registered events of step a1 is mapped to IMS territory registered events and specifically comprises: the circuit domain user start is mapped as the IMS initial registration, and circuit domain user roams to position first behind the reposition district and upgrades and be mapped as the IMS initial registration;

Described circuit domain sign is mapped to the IMS domain identifier and specifically comprises:

Home domain name: the domain name of using the RPF belonging network is as home domain name, perhaps according to configuration, according to the different home domain of registered user's circuit domain number assignment;

User Part among the medium public identify IMPU of temporary IP institute, the IP multimedia private identity IMPI produces according to the mode of user's international mobile logo sign indicating number IMSI, domain name part adopts aforesaid way to produce, and the default IMPU that returns after user's registration adopts the form of " E.164 number @ home domain name " to generate.

Wherein being used among the step a2 selecting the IMS domain identifier of I-CSCF is home domain name.

Wherein the described ephemeral data of step c comprises the temporary mark of described mobile CS contracted user at the IMS network at least.

Wherein steps d specifically comprises:

D1, I-CSCF select S-CSCF to transmit described REGISTER request to it according to described S-CSCF ability information, and S-CSCF is forwarded to HSS with described request, and HSS finishes the registration at the IMS network;

D2, CRPF after detecting the circuit domain register requirement of HSS, initiate and HLR mutual, act on behalf of described mobile CS contracted user and finish registration in its circuit-domain network.

Wherein steps d 2 also comprises: CRPF and described mobile CS contracted user's HLR obtains this user contracting data alternately, and proceeds to the mapping and the conversion of IMS formatted data, and the data after will changing then are sent to the HSS storage.

Wherein step a also comprises the authentication capability mapping that RPF supports described mobile CS contracted user

Be the parameter in the REISTER message of SIP;

Wherein steps d also comprises:

HSS returns to S-CSCF by CRPF after described mobile CS contracted user's HLR request authentication vector is handled, S-CSCF finishes authentication process according to authentication vector.

Said method specifically comprises:

S-CSCF indicates the authentication mechanism of described mobile CS contracted user support and the type of Access Network according to user ID to HSS;

HSS asks authentication vector by CRPF to described mobile CS contracted user's attaching position register HLR;

HLR returns to the CRPF authentication vector, CRPF returns to HSS again, and HSS returns to S-CSCF with the authentication mechanism of network implementation, after S-CSCF receives the authentication responses of HSS, remove response XRES parameter and the preservation expected in the authentication vector, initiate the authentication challenge to the user then;

Whether the more described mobile CS contracted user of S-CSCF consistent by Authentication Response RES and the own XRES that preserves that the authentication challenge responses sends, as if both unanimities then authentication pass through and from HSS download user data.

The mapping of wherein said authentication capability specifically comprises: authorize the parameter in the Authorization header field in the expansion Session Initiation Protocol REGISTER message, described user's authentication capability is mapped as respectively " GSM-AKA ", " UMTS-AKA " and " CDMA-AKA ".

The authentication mechanism that wherein said S-CSCF indicates described mobile CS contracted user to support to HSS is to realize by the spreading parameter of the Authorization header field among the multimedia authentication request MAR.

Wherein also comprise after the steps d:

Entity in the IMS network is subscribed to described mobile CS contracted user's handover event to RPF, and after RPF detection switching was finished, the notice events corresponding was to the subscriber.

Wherein also comprise after the steps d: S-CSCF is initiated to the third-party registration of application server AS according to the inspection of initial trigger condition iFC.

The invention also discloses the deregistering method of a kind of mobile CS contracted user at the IMS network, described method comprises the steps:

A, after RPF detects mobile CS contracted user shut down event, act on behalf of the registration of going that described contracted user is initiated to the IMS network, select behind the interrogation-call session control function entity I-CSCF to go to register REGISTER message to what it sent the SIP signaling;

Go to register the REGISTER request to its forwarding behind S-CSCF when b, I-CSCF inquire about described contracted user and register;

C, S-CSCF notice HSS upgrades described contracted user's login state, and HSS notice CRPF upgrades described mobile CS contracted user's login state.

When d, CRPF do not detect the user and register in IMS in the certain hour section, and during this period of time do not receive the canceling position message of described user HLR yet, then remove these user-dependent all information of CRPF neutralization, and notify described user HLR user profile to remove.

Wherein step a specifically comprises:

A1, RPF are mapped to the IMS territory with detected mobile CS contracted user circuit domain shut down event and remove registered events and mobile CS contracted user's circuit domain sign is mapped to the IMS domain identifier;

A2, RPF select behind the I-CSCF to go to register REGISTER message to what it sent the SIP signaling according to described IMS domain identifier.

The invention also discloses a kind of mobile CS network contraction user when being linked into IMS network initiate the method for nullifying, described method comprises the steps:

A, CRPF receive the deletion subscriber data message that mobile CS network contraction user's HLR initiates, and trigger HSS and initiate the logout flow path of described contracted user at the IMS network;

B, HSS notice S-CSCF goes the registered user, and S-CSCF notifies User Status to nullify respectively to described contracted user and P-CSCF, notifies described contracted user after RPF receives;

Notice CRPF upgraded its User Status after c, HSS went registration to finish notice, and CRPF returns the response of deletion user data success to HLR.

Wherein the described RPF of step b notifies the contracted user settling mode by application layer.

The settling mode of wherein said client layer specifically comprises the verbal announcement of short message SMS or destructuring user data USSD or network.

The invention also discloses a kind of mobile CS contracted user when inserting the IMS network its HLR revise the method for user data, described method comprises the steps:

A, mobile CS network contraction user's HLR initiates to revise user data requests to CRPF;

B, CRPF proceed to the conversion of IMS form with amended user contracting data and upgrade to HSS;

C, HSS be new data and return response more, and CRPF returns the modification result to HLR.

The invention also discloses a kind of mobile CS contracted user when inserting the IMS network network initiate heavy process registration, described method comprises the steps:

A, S-CSCF find that user's term of validity is overtime, notice RPF;

B, RPF notice UE initiates heavily registration;

Notice HSS network had gone to register this user after c, S-CSCF received all heavy registration notification acknowledge messages of returning, and HSS notice CRPF upgrades its User Status.

Wherein the described RPF notice of step b UE initiates heavily registration and adopts the application layer settling mode.

The invention also discloses the method for a kind of mobile CS contracted user network booking reader handover event when inserting the IMS network, described method comprises the steps:

A, S-CSCF and/or AS are initiated to the flow process that RPF subscribes to described contracted user's handover event after user registration success;

B, described contracted user initiate switching flow, and RPF notice S-CSCF and/or AS handover event take place after finishing.

The invention also discloses the method for a kind of mobile CS contracted user called connection when inserting the IMS network, described method comprises the steps:

After a, mobile switch MSC receive calling subscriber's call request, to called HLR request roaming information;

B, HLR distribute called subscriber's roaming number to CRPF request, the roaming number in CRPF distributor circuit territory, and circuit-domain network routes the call to the inlet entity of IMS network according to the parsing to the roaming number that distributed;

C, described inlet entity from CRPF obtain called after the sign of IMS network addressing called, finish call proceeding.

Step b specifically comprises in the method for above-mentioned called connection:

B1, HLR to CRPF request distribute called subscriber's roaming number, CRPF be call distribution E.164 form roaming number and roaming number and called subscriber registered to electronic code server ENUM at the user ID IMPU of IMS network SIP unified resource sign SIP URI form;

B2, circuit-domain network route the call to the inlet entity of IMS network according to the parsing of roaming number; Simultaneously, step c specifically comprises:

C1, described IMS Web portal entity are inquired about to E.164 Number server according to this roaming number, obtain the user ID of the SIP URI form in called subscriber IMS territory;

C2, described IMS Web portal entity are called according to described user ID addressing, finish call proceeding.

Step b can also specifically comprise in the method for above-mentioned called connection:

B1, HLR are to CRPF request distribution called subscriber's roaming number, and CRPF is the E.164 roaming number of form of call distribution;

B2, circuit-domain network are addressed to the inlet entity of IMS network according to the roaming number that distributes; Simultaneously, wherein step c specifically comprises:

C1, when described inlet entity is received the calling that comprises IMS netsurfing number, return corresponding IMS network identity according to this roaming number request CRPF;

The IMS network identity addressing that c2, described inlet entity basis are returned is called, finishes call proceeding.

Step b can also specifically comprise in the method for above-mentioned called connection:

B1, HLR are to CRPF request distribution called subscriber's roaming number, and CRPF is the E.164 roaming number of form of call distribution, and this roaming number is the public service identity PSI at IMS network identity CRPF;

B2, circuit-domain network are addressed to the inlet entity of IMS network according to described roaming number; Simultaneously, wherein step c specifically comprises:

When the inlet entity of c1, described IMS network is received the calling that comprises IMS netsurfing number, route the call to CRPF according to described PSI;

After c2, CRPF are converted to corresponding IMS network identity with roaming number, control the S-CSCF that the 3PCC function routes the call to described called subscriber's registration to the S-CSCF or the use third party call of described called subscriber's registration by 302 redirected calls;

The inlet entity of wherein said IMS network is MGCF entity MGCF.

The invention also discloses a kind of IMS network and provide the system of registration for mobile CS contracted user, described system comprises:

RPF, mobile CS contracted user of agency is in the registration of IMS network after being used for detecting mobile CS contracted user and being mapped to IMS territory registered events at the registered events of circuit domain and with it;

HSS is used for producing ephemeral data into described mobile CS contracted user at the IMS network;

CRPF, the HLR that detects after the HSS register requirement incident with described mobile CS contracted user finishes the registration of described mobile CS contracted user in circuit domain alternately.

Wherein said RPF also is used for acting on behalf of the access authentication of described mobile CS contracted user at the IMS network.

Wherein, described CRPF also is used for being mobile CS network contraction user's called connection distributor circuit territory roaming number, and this roaming number is converted to the sign of described contracted user at the IMS network.

Wherein said CRPF also be used for processing circuit domain network entity HLR modification or the deletion user data requests.

When wherein said RPF and P-CSCF realized at same entity, its interface was an internal interface; Whether described RPF and P-CSCF or not same entity is not realized, interface is the Gm of IMS definition.

Its interface was the MAP interface of 3GPP or 3GPP2 definition, perhaps packet based protocol such as Diameter or SIP when wherein HSS and CRPF branch was arranged.

When HSS and CRPF were set to one, its interface was an internal interface.

Interface between wherein said CRPF and user's the HLR adopts the MAP of 3GPP or 3GPP2 definition mutual.

The present invention also provides a kind of functional entity of acting on behalf of mobile CS territory contracted user at the IMS network registry, it is characterized in that the described mobile CS territory contracted user of agency was at the IMS network registry after described entity can be mapped to detected mobile CS contracted user circuit domain registered events IMS territory registered events and mobile CS contracted user's circuit domain sign is mapped to the IMS domain identifier.

Wherein said entity can also be mapped to the authentication capability that detected CS contracted user supports parameter in the SIP registration message and act on behalf of the authentication of described mobile CS contracted user in the IMS territory.

The present invention also provides a kind of mobile CS territory contracted user to act on behalf of the functional entity of registering in circuit domain when the IMS network registry, it is characterized in that, described entity can it be registered in circuit domain with the mutual back agency of mobile CS territory contracted user's HLR.

After wherein said entity can also detect the circuit domain authentication request incident that HSS sends, obtain authorization data alternately with mobile CS network contraction user's HLR.

Wherein said entity can also obtain this user contracting data alternately with mobile CS network contraction user's HLR, and proceeds to the mapping and the conversion of IMS formatted data, and the data after will changing then are sent to the HSS storage.

The present invention overcomes the deficiencies in the prior art, by the RPF functional entity circuit domain registered events is mapped as IMS network registry incident and walking circuit territory contracted user is converted to the IMS network identity in the circuit domain sign, act on behalf of registration and the authentication of walking circuit territory contracted user at the IMS network, and act on behalf of the registration of walking circuit territory user in circuit domain by CRPF, after this user's registration, when this user of other customer call, CRPF is responsible for the roaming number into the call distribution circuit domain, and finish the circuit domain roaming number at MGCF and change with its IMPU at the IMS network, finish the called flow process that continues afterwards at the IMS network, make the IMS network provide registration and calling for mobile CS network contraction user, and guarantee the fail safe of its access network, thereby the network enjoyment IMS business that roams to IMS compatible circuit territory terminal for other walking circuit territory user becomes possibility, but increased the service object of IMS network simultaneously, promoted the network value of operator.

Description of drawings

Fig. 1 is walking circuit territory user's register flow path figure;

Fig. 2 is the register flow path figure of SIM user in circuit domain;

Fig. 3 is IMS user's an initial registration flow chart;

Fig. 4 is the heavy register flow path figure of IMS Client-initiated;

Fig. 5 removes register flow path figure for what the IMS network was initiated;

Fig. 6 is a system schematic of the present invention;

Network was initiated heavy registered application layer notice schematic diagram when Fig. 7 inserted the IMS network for CS contracted user of the present invention;

Fig. 8 is the embodiment of the invention one flow chart;

Fig. 9 is the embodiment of the invention two flow charts;

Figure 10 is the embodiment of the invention three flow charts;

Figure 11 is the embodiment of the invention four flow charts;

Figure 12 is the embodiment of the invention five flow charts;

Figure 13 is the embodiment of the invention six flow charts;

Figure 14 is the embodiment of the invention seven flow charts;

Figure 15 is the embodiment of the invention eight flow charts;

Figure 16 is the embodiment of the invention nine flow charts;

Figure 17 is the embodiment of the invention ten flow charts;

Figure 18 is the embodiment of the invention 11 flow charts;

Figure 19 is the embodiment of the invention 12 flow charts;

Figure 20 is the embodiment of the invention 13 flow charts;

Figure 21 is the embodiment of the invention 14 flow charts.

Embodiment

Basic ideas of the present invention are that the user by the signatory CS network of trade mark agency functional entity RPF agency is registered to the IMS network, in this process, the IMS network obtains this user's circuit domain authorization data and user contracting data by circuit domain trade mark agency functional entity (CRPF), thereby finishes registration; After this user's registration, when this user of other customer call, CRPF is responsible for the roaming number of call distribution circuit domain, and finishes circuit domain roaming number and its conversion in the sign of IMS network at the inlet entity of IMS network, finishes the called flow process that continues at the IMS network afterwards.

The user of signatory walking circuit of the present invention territory network inserts the IMS network and finishes registration and the system of call proceeding as shown in Figure 6, wherein:

Increase the RPF functional entity between circuit-domain network and IMS network, be used for making the user in signatory walking circuit territory can be linked into the IMS network; Also increased the CRPF functional entity simultaneously, made the IMS network to obtain its authorization data and subscription data from the HLR of this user institute home network; And when this user's called connection, be that circuit domain call distributes the roaming number can be addressed to IMS Web portal entity MGCF, and finish the called connection flow process of finishing after institute distributes roaming number the IMPU during at the IMS network registry changes with this user among the IMS at MGCF by CRPF.

Specify as follows: trade mark agency functional entity (RPF:Register Proxy Function, 201), on the basis of inheriting circuit domain MSC/VLR registration correlation function, the user of the signatory walking circuit territory of agency network is registered to the IMS network, and the basic function of increase comprises:

Detect the registered events of walking circuit territory user, and it is mapped as IMS territory registered events in circuit domain;

Act on behalf of walking circuit territory user at IMS territory registering functional, comprise that the user according to signatory walking circuit territory network registers required user ID and home network identification in the user ID derivation of circuit domain in the IMS territory;

Basic function, also have following additional function except above-mentioned:

Act on behalf of this user at authentication, booking reader's registered events in IMS territory and the heavy registering functional of notifying this user network to initiate;

The function of subscribing to this user's handover event is provided for other IMS network entity;

When HSS (207) receives the signatory walking circuit territory of inquiry user data, find that this user is other walking circuit territory network user, thereby generate casual user's data for this user; When receiving the request of S-CSCF user contracting data, obtain user contracting data to the CRPF request of sending and according to its response.

The function that circuit domain trade mark agency function (CRPF:206, CS domain Register Proxy Function) increases is as follows:

Be the HLR request authorization data of HSS to signatory CS user;

Mutual with signatory CS user's HLR, act on behalf of this user and finish registration in its circuit-domain network;

After obtaining this user contracting data, proceed to the mapping and the conversion of IMS formatted data, and the data after will changing are sent to the HSS storage from HLR;

After this user finishes the registration of IMS network, preserve sign in its IMS network and circuit domain sign and corresponding relation.When HLR request roaming number is the E.164 number that call distribution can be addressed to IMS network MGCF entity, and the corresponding relation of the IMS network identity of preservation and user's registration;

As MGCF during, return the default IMPU of IMS network for user's distribution according to the IMS network identity of roaming number inquiring user registration.

Wherein CRPF have E.164 number so that and HLR mutual; Can close with IMS network others entity such as HSS when CRPF realizes as functional entity and establish.

HLR shown in the accompanying drawing 6 110,111,112, is the user's of signatory walking circuit territory network attaching position register.

CSCF is the entity of IMS network, and particularly S-CSCF identification user wherein cooperates HSS to finish in the authentication of IMS network to walking circuit territory user for signatory walking circuit territory user inserts the IMS network.

Wherein:

According to the residing position of RPF, if RPF and P-CSCF realize that at same entity then interface R1 is the Mw of IMS definition; Otherwise interface R1 is the Gm of IMS definition;

Interface C1 is the interface between HSS and the CRPF, finishes obtaining of signatory walking circuit territory subscription authentication data and circuit domain subscription data; When two entity branches were arranged, its interface adopted mobile application protocol (MAP) or packet based protocol such as Diameter, the SIP (Session initiation Protocol) etc. that include but not limited to 3GPP or 3GPP2 definition; When closing, entity adopts internal interface when establishing;

Interface C2 is CRPF and user's a HLR interface, finishes the partial function of walking circuit territory VLR and HLR interface, comprises position renewal and insertion user data, Provides Roaming Number.Can adopt the MAP that includes but not limited to 3GPP or 3GPP2 definition during application;

Interface C3 is the interface between MGCF and CRPF, carries out the conversion of circuit domain user sign and IMS territory user ID; This interface is the optional interface in the native system, includes but not limited to MAP or packet based protocol such as Diameter, the SIP etc. of 3GPP or 3GPP2 definition during application.

The user of signatory walking circuit of the present invention territory network inserts the IMS network and finishes registration and comprise following basic step:

1) RPF detects mobile CS network contraction user's registration dependent event;

2) RPF initiates the mobile CS network contraction user of agency to the IMS network registry;

This step specifically comprises:

To the contract mobile CS network user's circuit domain sign of a, RPF is mapped to the IMS domain identifier, and when IMS register, the circuit domain that should finish the user identifies and the IMS domain identifier is changed, and comprises the conversion of following sign the mobile CS network contraction user of agency for RPF.

Home domain name (home domain name): the domain name that can use the RPF belonging network is as home domain name; Perhaps according to configuration, according to the different home domain of registered user's circuit domain number assignment.

User Part among interim IMPU, the IMPI can produce according to the mode of TS23.003 among the 3GPP, and domain name part adopts aforesaid way to produce; The default IMPU that returns after user's registration adopts the form of " E.164 number @ home domain name " to generate, and preserves at HSS, S-CSCF, RPF and CRPF, also should preserve in AS in the case of necessary.As " 8613907551234@sz.gd.cmcc.com "; This IMPU is that the user uses in entire I MS network, can derive user's E.164 number according to user's IMPU, in the IMS of user attaching network, also can derive user's IMPU according to user's E.164 number, also can use the ENUM service to find user's IMPU according to number E.164.

B, RPF are mapped to IMS territory registered events with detected circuit domain registered events: its mapping relations are as follows:

User start → IMS initial registration

Roam to the renewal → IMS initial registration of position first behind the reposition district

The heavily registration that the MS network is initiated → solve by application layer scheme such as SMS, USSD or verbal announcements;

C, RPF select a this locality I-CSCF and to transmissions register requirement, selection S-CSCF transmits described REGISTER to it and asks behind I-CSCF and the HSS, S-CSCF is forwarded to HSS with described request;

When 3) HSS detects mobile CS network contraction user's login state query event, for this user generates IMS network ephemeral data.Described login state query event refers to that HSS receives the Cx interface message " user-authorization-request " that I-CSCF sends first; Described IMS network ephemeral data is included as the IMS domain identifier that this user generates at least, and corresponding relation, the basic call desired data of IMS domain identifier and its circuit domain sign; The required information of normal registration among other IMS.

When 4) HSS detected mobile CS network contraction registration request from user incident, notice CRPF initiated the registration of agent circuit territory; Described register requirement incident refers to that HSS receives the Cx interface message " server-assignment request " that S-CSCF sends;

When 5) CRPF detects agent circuit territory register requirement, act on behalf of this user and finish registration at the CS network; And notice HSS circuit domain registering result;

6) HSS notice S-CSCF finishes the registration of this user at the IMS network;

When the IMS network carried out authentication to mobile CS network contraction user, above basic step also needed following processing:

Basic step 2) before sending register requirement, increase in:

RPF is mapped to parameter in the SIP registration message with the authentication capability of detected circuit domain terminal support, and initiates to register in the IMS network; Wherein the crucial processing of the mapping of terminal authentication ability is as follows:

The circuit domain authentication capability of terminal support can be divided into GSM mode, UMTS mode and CDMA mode, can expand the parameter in the Authorization header field in the Session Initiation Protocol registration message, as expanded definition parameter auth-scheme, then above terminal authentication ability is mapped as respectively " GSM-AKA ", " UMTS-AKA " and " CDMA-AKA ";

Basic step 3) basic step 4 afterwards) increase following treatment step before:

S-CSCF receives initial register requirement, identifying is the register requirement of circuit domain user, then according to the parameter in the request when HSS sends Cx interface message " multimedia authentication request " MAR, point out corresponding authentication mechanism and other authentication relevant information that the user supports.Its crucial processing is:

S-CSCF is determined to the authentication mechanism that HSS asks according to the spreading parameter such as the auth-scheme of Authorization header field; And derive the type of access network, and comprising this two parameters sending in the authentication request message to HSS according to the P-Access-Network-Info header field;

After " the multimedia authentication request " of HSS according to the S-CSCF that receives, judge the user and be the signatory user in walking circuit territory.The circuit domain sign of then using the user is to CRPF transtation mission circuit territory authentication request incident.If HSS and CRPF close and establish, direct this incident of perception of CPRF then; If HSS and CRPF set up separately, then the interface protocol by two inter-entity transmits this incident;

After CRPF detects circuit domain authentication request incident, use the HLR request authorization data of the existing flow process in walking circuit territory to the user; And the result returned to HSS;

HSS after handling, returns to S-CSCF with final authentication vector according to after obtaining authentication vector from CRPF, allows it to subscription authentication; Its crucial processing is:

HSS judges whether to carry out mutual conversion between the five-tuple vector sum tlv triple vector according to the authentication mechanism of the access network type/user terminal support of receiving and according to customer attribute information; Then final authentication vector is returned to S-CSCF, and point out the authentication mechanism of network implementation.

S-CSCF initiates the authentication challenge according to the indication of HSS to the user, calculates authenticating result after the user receives and returns to S-CSCF, and that S-CSCF affirmation user returns is the result of expectation, and then authentication is by continuing to handle registration;

When the IMS network was handled mobile CS network contraction user's circuit domain subscription data, above basic step also needed following processing:

Basic step 5) it is as follows to add treatment step in:

CRPF receives the user contracting data that HLR inserts in the agency carries out circuit domain registration, and these data are proceeded to the conversion of IMS form, afterwards the result is returned to HSS; Wherein carry out user data conversion and include but not limited to following factor:

Roaming agreement between IMS network and circuit-domain network;

The professional ability that the IMS network provides, as the ability information of the AS that manages business etc.;

After above several basic steps are finished, also comprise other subsequent step:

A) RPF acts on behalf of walking circuit territory user in the cancellation of IMS network, and at first RPF detects user's shut down event in walking circuit territory, and the RPF proxy user is initiated to the cancellation of IMS network then;

B) RPF handles the user log off that the IMS network is initiated; After RPF receives the message of logging off users of network, use relevant signaling of circuit domain or applicative notifications user to be canceled in the IMS territory;

C) user of RPF processing IMS network initiation heavily registers.

RPF receives the message of the logging off users of network, uses relevant signaling of circuit domain or applicative notifications user to initiate registration process;

As shown in Figure 7:, when network is initiated heavily registration or nullified,, then can use the settling mode of application layer if wave point does not have suitable signaling procedure for WCDMA and GSM network.Just at present use feasible have SMS (short message), the verbal announcement of USSD (destructuring user data) or network etc.For the notice of preceding two application,, initiate heavily registration automatically after then being notified to the user by UE if UE has disposal ability; If UE can not then will be shown to the user by oneself, whether initiate registration again by user's decision.For verbal announcement, then can only user's decision whether initiate registration again.

D) RPF handles subscription and the events corresponding notice to user's handover event that other IMS network entity is initiated, and comprising:

After the registration of IMS territory was finished, the switching that the interested network entity of this user's handover event is initiated to RPF was subscribed to RPF agent circuit territory user;

After RPF handled request, notice was subscribed to entity after the handover event that detects this user is finished;

Wherein finish behind the IMS network registry when the RPF proxy user, the entity in the IMS network can arrive RPF and subscribe to and can comprise the switching of RPF inside and the switching between RPF at the user's of RPF perception handover event.After RPF detection switching was finished, the notice events corresponding was to the subscriber.

E) modification of CRPF processing circuit domain network entity HLR or deletion user data requests;

Called call proceeding flow process implementation method of the present invention comprises following basic step:

1) CRPF is the roaming number of mobile CS network contraction user distributor circuit territory form when the called connection of IMS network;

2) circuit-domain network routes the call to the inlet entity of IMS network according to the circuit domain roaming number that returns, and described inlet entity can be the MGCF entity in the IMS network;

3) the IMS network is converted to the sign of mobile CS network contraction user at the IMS network with this roaming number, and the mode of conversion comprises:

CRPF is that call distribution is E.164 during the roaming number of form, the IMS network user identifier IMPU one of this roaming number and this user's SIP URI (SIP unified resource sign) form is played the E.164 Number server registration, MGCF inquires about to E.164 Number server according to this roaming number afterwards, to obtain the SIP sign in IMS territory; Perhaps

CRPF is the E.164 roaming number of form of call distribution, and this number can be addressed to the inlet entity such as the MGCF of IMS network.When the inlet entity of IMS network such as MGCF receive the calling that comprises IMS netsurfing number, return corresponding IMS network identity according to this roaming number request CRPF; Can use the agreement of DIAMETER, LDAP (LDAP) or other packet network between two entities.

CRPF is the E.164 roaming number of form of call distribution, and this number can be addressed to the inlet entity such as the MGCF of IMS network, and this number is at the PSI of IMS network identity CRPF (public service identity) simultaneously.When the inlet entity of IMS network such as MGCF receive the calling that comprises IMS netsurfing number, route the call to CRPF according to this PSI.After CRPF is converted to corresponding IMS network identity with roaming number, by the S-CSCF of 302 redirected calls to this user's registration;

CRPF is the E.164 roaming number of form of call distribution, and this number can be addressed to the inlet entity such as the MGCF of IMS network, and this number is the PSI at IMS network identity CRPF simultaneously.When the inlet entity of IMS network such as MGCF receive the calling that comprises IMS netsurfing number, route the call to CRPF according to this PSI.After CRPF is converted to corresponding IMS network identity with roaming number, and use 3PCC (third party call control) function, route the call to the S-CSCF of this user's registration, handle calling by the existing mode of IMS network then and get final product.

Below by embodiment above-mentioned flow process is described:

Embodiment one: the initial registration flow process that 3G terminal usim card RNS (Radio Network System) inserts as shown in Figure 8, be example with WCDMA RNS in the present embodiment, but its application is not limited to the WCDMA technology, HSS and CRPF close and establish among this embodiment, between use internal interface, be not limited thereto but use.

(1) detect " position updating request " that UE sends after, RPF derives it in the required sign of IMS territory registration according to this user's circuit domain sign, parses according to the home network domain name that wherein derives or according to the address of an I-CSCF of selection of configuration again.Send the REGISTER message of SIP signaling to the IMS network registry to I-CSCF then, the spreading parameter such as the auth-scheme that should comprise the Authorization header field in this message represent the authentication mechanism that RPF supports according to the user terminal that obtains from the subscriber line circuit territory access signaling that RNS receives, also comprise the Access Network information in the P-Access-Network-Info header field, Access Network is UTRAN-FDD (universal mobile telecommunications system terrestrial radio Access Network Frequency Division Duplexing (FDD)) pattern herein.

(2) I-CSCF according to user's IMPU, IMPI at HSS inquiring user login state;

(3) HSS is judged as the user of signatory circuit-domain network according to user ID, then generate its ephemeral data at the IMS network, comprise: the user is at the identity information of IMS network, as the IMS network user identifier, and other IMS network registry is at the required canned data of HSS, and returns the S-CSCF ability information;

(4) I-CSCF selects a S-CSCF process user register requirement according to the S-CSCF ability information of returning; I-CSCF transmits the REGISTER request to S-CSCF address selected or that return;

(5) S-CSCF judges the user of registrant for signatory walking circuit territory network according to user ID, to the authentication mechanism of HSS indicating user terminal support and the type of Access Network, to obtain the corresponding authentication data;

(6) after HSS receives request, judge the user of user, by the HLR request authentication vector of CRPF to this user for signatory circuit-domain network according to user's sign;

(7) HLR returns to CRPF corresponding authentication vector, and CRPF returns to HSS again; What the HSS indication network was implemented is authentication mechanism AKA-UMTS-CS (UMTS circuit domain key agreement), and the result is returned to S-CSCF; After S-CSCF receives the authentication responses of HSS, remove XRES parameter and preservation in the authentication vector, item returns 401 and initiates the authentication challenge to the user then, and algorithm (algorithm) parameter of WWW-Authenticate (WWW-authentication) header field is set to the network authentication mechanism AKA-UMTS-CS of HSS indication.

(8) whether the XRES of the RES that relatively sends from UE of S-CSCF and own preservation consistent, as if both unanimities then authentication pass through.S-CSCF will notify the HSS user registration success, and from HSS download user data; After HSS receives request, finish in the position of circuit-domain network more new technological process by the CPRF proxy user; Wherein after receiving the user data that HLR inserts and change, CRPF sends to HSS;

(9) after CRPF receives that the position renewal of HLR is finished, notice HSS; HSS returns to S-CSCF with the S-CSCF desired data again;

S-CSCF may be initiated to the third-party registration of AS according to the inspection of iFC (initial trigger condition); Upgrade the User Status of its storage and address information, registration timeout value etc.; Return " position is upgraded and accepted " and have newly assigned TMSI to UE; Subscribe to this user's registration status notification to S-CSCF then; S-CSCF receives that the request back sends the log-on message that NOTIFY returns the user, comprises the not forbidden IMPU of all registrations;

AS gets relevant user data and booking reader's data variation incident to HSS after S-CSCF finishes third-party registration.

Embodiment two: the initial registration flow process that 3G terminal USIM (UMTS Subscriber Identity Module) card BSS (base station) inserts as shown in Figure 9, HSS and CRPF set up separately in the present embodiment, between use the Diameter interface, be not limited thereto but use.

(1) detect " position updating request " that UE sends after, RPF derives it in the required sign of IMS territory registration according to this user's circuit domain sign.Parse according to the home network domain name that wherein derives again or according to the address of an I-CSCF of selection of configuration.REGISTER message to I-CSCF transmission SIP signaling arrives the IMS network registry then, should comprise in this message that the spreading parameter of Authorization header field such as auth-scheme represent the authentication mechanism that RPF supports according to the user terminal that obtains from the subscriber line circuit territory access signaling that BSS receives; Also comprise the Access Network information in the P-Access-Network-Info header field, Access Network is GERAN (GSM EDGE Radio Access Network network) pattern herein.

(2) I-CSCF according to the IMPU in the message, IMPI at HSS inquiring user login state;

(3) HSS is judged as the user of signatory circuit-domain network according to user ID, then generates its ephemeral data at the IMS network, and returns the S-CSCF ability information;

(4) I-CSCF selects a S-CSCF process user register requirement according to the S-CSCF ability information of returning; I-CSCF transmits the REGISTER request to S-CSCF address selected or that return;

(5) S-CSCF judges the user of registrant for signatory walking circuit territory network according to user ID, to the authentication mechanism of HSS indicating user terminal support, and the type of Access Network, to obtain the corresponding authentication data;

(6) after HSS receives request, judge the user of user, by the HLR request authentication vector of CRPF to this user for signatory circuit-domain network according to user's sign;

(7) HLR returns to CRPF corresponding authentication vector, and CRPF returns to HSS again; HSS is according to the five-tuple authentication vector of receiving, and access network is judged as GSM BSS access, then CK and IK are generated Kc (GSM encryption key) together, and indication network implements is authentication mechanism AKA-UMTS-CS (negotiation of UMTS circuit domain KI), the result is returned to S-CSCF; After S-CSCF receives the authentication responses of HSS, remove XRES parameter and preservation in the authentication vector, return 401 then and initiate the authentication challenge, and the algorithm parameter of WWW-Authenticate header field is set to the network authentication mechanism AKA-UMTS-CS of HSS indication to the user.

(8) whether the RES of the RES that relatively sends from UE of S-CSCF and own preservation consistent, as if both unanimities then authentication pass through.S-CSCF will notify the HSS user registration success, and from HSS download user data; After HSS receives request, finish in the position of circuit-domain network more new technological process by the CPRF proxy user; Wherein after receiving the user data that HLR inserts and change, CRPF sends to HSS;

(9) after CRPF receives that the position renewal of HLR is finished, notice HSS; Again that S-CSCF is the required data of HSS return to S-CSCF;

S-CSCF may be initiated to the third-party registration of AS according to the inspection of iFC; Upgrade the User Status and the address information of its storage, registration timeout value etc.; Return " position is upgraded and accepted " and have newly assigned TMSI to UE; Subscribe to this user's registration status notification to S-CSCF then; S-CSCF receives that the request back sends the log-on message that NOTIFY returns the user, comprises the not forbidden IMPU of all registrations;

AS gets relevant user data and booking reader's data variation incident to HSS after S-CSCF finishes third-party registration.

Embodiment three: when 2G terminal usim card BSS inserts the initial registration flow process as shown in Figure 10, HSS and CRPF close and establish among this embodiment, between use internal interface, be not limited thereto but use.

(1) detect " position updating request " that UE sends after, RPF derives it in the required sign of IMS territory registration according to this user's circuit domain sign.Parse according to the home network domain name that wherein derives again or according to the address of an I-CSCF of selection of configuration.REGISTER message to I-CSCF transmission SIP signaling arrives the IMS network registry then, should comprise in this message that the spreading parameter of Authorization header field such as auth-scheme represent the authentication mechanism that RPF supports according to the user terminal that obtains from the subscriber line circuit territory access signaling that BSS receives; Also comprise the Access Network information in the P-Access-Network-Info header field, Access Network is the GERAN pattern herein.

(2) I-CSCF according to the IMPU in the message, IMPI at HSS inquiring user login state;

(3) HSS is judged as the user of signatory circuit-domain network according to user ID, then generates its ephemeral data at the IMS network, and returns the S-CSCF ability information;

(4) I-CSCF selects a S-CSCF process user register requirement according to the S-CSCF ability information of returning; I-CSCF transmits the REGISTER request to S-CSCF address selected or that return;

(5) S-CSCF judges the user of registrant for signatory walking circuit territory network according to user ID, to the authentication mechanism of HSS indicating user terminal support, and the type of Access Network, to obtain the corresponding authentication data;

(6) after HSS receives request, judge the user of user, by the HLR request authentication vector of CRPF to this user for signatory circuit-domain network according to user's sign;

(7) HLR returns to CRPF corresponding authentication vector, and CRPF returns to HSS again; HSS is according to the five-tuple authentication vector received, and access network is judged as GSM BSS and inserts, and then CK and IK generated Kc together, and RES generates SRES, and that indication network enforcement is authentication mechanism AKA-GSM-CS, and the result is returned to S-CSCF; After S-CSCF receives the authentication responses of HSS, remove SRES parameter and preservation in the authentication vector, item returns 401 and initiates the authentication challenge to the user then, and the algorithm parameter of WWW-Authenticate header field is set to the network authentication mechanism AKA-GSM-CS (negotiation of GSM circuit domain KI) of HSS indication.

(8) whether the SRES of the RES that relatively sends from UE of S-CSCF and own preservation consistent, as if both unanimities then authentication pass through.S-CSCF will notify the HSS user registration success, and from HSS download user data; After HSS receives request, finish in the position of circuit-domain network more new technological process by the CPRF proxy user; Wherein after receiving the user data that HLR inserts and change, CRPF sends to HSS;

(9) after CRPF receives that the position renewal of HLR is finished, notice HSS; HSS returns to S-CSCF with the S-CSCF desired data again;

S-CSCF may be initiated to the third-party registration of AS according to the inspection of iFC; Upgrade the User Status and the address information of its storage, registration timeout value etc.; Return " position is upgraded and accepted " and have newly assigned TMSI to UE; Subscribe to this user's registration status notification to S-CSCF then; S-CSCF receives that the request back sends the log-on message that NOTIFY returns the user, comprises the not forbidden IMPU of all registrations;

AS gets relevant user data and booking reader's data variation incident to HSS after S-CSCF finishes third-party registration.

Embodiment four: when 2G terminal SIM card BSS inserts the initial registration flow process as shown in Figure 11, its application is not limited to the GSM technology, HSS and CRPF close and establish among this embodiment, between use internal interface, be not limited thereto but use.

(1) detect " position updating request " that UE sends after, RPF derives the required sign of its IMS territory registration according to this CS territory user's circuit domain sign.Parse the address of its home network I-CSCF again according to the home network domain name that wherein derives.REGISTER message to I-CSCF transmission SIP signaling arrives the IMS network registry then, should comprise in this message that the spreading parameter of Authorization header field such as auth-scheme represent the authentication mechanism that RPF supports according to the user terminal that obtains from the subscriber line circuit territory access signaling that BSS receives; Also comprise the Access Network information in the P-Access-Network-Info header field, Access Network is the 3GPP-GERAN pattern herein.

(2) I-CSCF according to the IMPU in the message, IMPI at HSS inquiring user login state;

(3) HSS is judged as the user of signatory circuit-domain network according to user ID, then generates its ephemeral data at the IMS network, and returns the S-CSCF ability information;

(4) I-CSCF selects a S-CSCF process user register requirement according to the S-CSCF ability information of returning; I-CSCF transmits the REGISTER request to S-CSCF address selected or that return;

(5) S-CSCF judges the user of registrant for signatory walking circuit territory network according to user ID, to the authentication mechanism of HSS indicating user terminal support and the type of Access Network, to obtain the corresponding authentication data;

(6) after HSS receives request, judge the user of user, by the HLR request authentication vector of CRPF to this user for signatory circuit-domain network according to user's sign;

(7) HLR returns to CRPF corresponding authentication vector, and CRPF returns to HSS again; The tlv triple that the HSS basis is received, and access network type etc., that indication network is implemented is authentication mechanism AKA-GSM-CS, and the result is returned to S-CSCF; After S-CSCF receives the authentication responses of HSS, remove RES parameter and preservation in the authentication vector, item returns 401 and initiates the authentication challenge to the user then, and the algorithm parameter of WWW-Authenticate header field is set to the network authentication mechanism AKA-GSM-CS of HSS indication.

(8) whether the RES of the SRES that relatively sends from UE of S-CSCF and own preservation consistent, as if both unanimities then authentication pass through.S-CSCF will notify the HSS user registration success, and from HSS download user data; After HSS receives request, finish in the position of circuit-domain network more new technological process by the CPRF proxy user; Wherein after receiving the user data that HLR inserts and change, CRPF sends to HSS;

(9) after CRPF receives that the position renewal of HLR is finished, notice HSS; HSS returns to S-CSCF with the S-CSCF desired data again;

S-CSCF may be initiated to the third-party registration of AS according to the inspection of iFC; Upgrade the User Status and the address information of its storage, registration timeout value etc.; Return " position is upgraded and accepted " and have newly assigned TMSI to UE; Subscribe to this user's registration status notification to S-CSCF then; S-CSCF receives that the request back sends the log-on message that NOTIFY returns the user, comprises the not forbidden IMPU of all registrations;

AS gets relevant user data and booking reader's data variation incident to HSS after S-CSCF finishes third-party registration.

Embodiment five: the initial registration flow process that R-UIM card 3G terminal is linked into IMS as shown in Figure 12, this sentences CDMA and inserts and be example, but its application is not limited to CDMA technology, HSS and CRPF close and establish among this embodiment, between use internal interface, be not limited thereto but use.

(1) detect " position updating request " that UE sends after, RPF derives the required sign of its IMS territory registration according to this CS territory user's circuit domain sign.Parse the address of its home network I-CSCF again according to the home network domain name that wherein derives.REGISTER message to I-CSCF transmission SIP signaling arrives the IMS network registry then, should comprise in this message that the spreading parameter of Authorization header field such as auth-scheme represent the authentication mechanism that RPF supports according to the user terminal that obtains from the subscriber line circuit territory access signaling that BSS receives; Also comprise the Access Network information in the P-Access-Network-Info header field, Access Network is 3GPP2-CDMA2000 (third generation partner plans a 2-CDMA2000) pattern herein.

(2) I-CSCF according to the IMPU in the message, IMPI at HSS inquiring user login state;

(3) HSS is judged as the user of signatory circuit-domain network according to user ID, then generates its ephemeral data at the IMS network, and returns the S-CSCF ability information;

(4) I-CSCF selects a S-CSCF process user register requirement according to the S-CSCF ability information of returning; I-CSCF transmits the REGISTER request to S-CSCF address selected or that return;

(5) S-CSCF judges the user of registrant for signatory walking circuit territory network according to user ID, to the authentication mechanism of HSS indicating user terminal support, and the type of Access Network, to obtain the corresponding authentication data;

(6) after HSS receives request, judge the user of user, by the HLR request authentication vector of CRPF to this user for signatory circuit-domain network according to user's sign;

(7) HLR returns to CRPF corresponding authentication vector, and CRPF returns to HSS again; The tlv triple that the HSS basis is received, and access network type etc., what indication network was implemented is authentication mechanism AKA-CDMA-CS (negotiation of CDMA2000 circuit domain KI), and the result is returned to S-CSCF; After S-CSCF receives the authentication responses of HSS, remove RES parameter and preservation in the authentication vector, item returns 401 and initiates the authentication challenge to the user then, and the algorithm parameter of VVVVVV-Authenticate header field is set to the network authentication mechanism AKA-CDMA-CS of HSS indication.

(8) whether the RES of the SRES that relatively sends from UE of S-CSCF and own preservation consistent, as if both unanimities then authentication pass through.S-CSCF will notify the HSS user registration success, and from HSS download user data; After HSS receives request, finish in the position of circuit-domain network more new technological process by the CPRF proxy user; Wherein after receiving the user data that HLR inserts and change, CRPF sends to HSS;

(9) after CRPF receives that the position renewal of HLR is finished, notice HSS; HSS returns to S-CSCF with the S-CSCF desired data again;

S-CSCF may be initiated to the third-party registration of AS according to the inspection of iFC; Upgrade the User Status and the address information of its storage, registration timeout value etc.; Return " position is upgraded and accepted " and have newly assigned TMSI to UE; Subscribe to this user's registration status notification to S-CSCF then; S-CSCF receives that the request back sends the log-on message that NOTIFY returns the user, comprises the not forbidden IMPU of all registrations; AS gets relevant user data and booking reader's data variation incident to HSS after S-CSCF finishes third-party registration.

Embodiment six: when the user in signatory walking circuit territory shuts down, the Client-initiated that is mapped as among the IMS goes register flow path as shown in Figure 13, and RPF and P-CSCF close and establish in the present embodiment, and HSS and CRPF close and be made as example, between use internal interface, be not limited thereto but use.

(1) after RPF detects user's shut down event of circuit domain, can proxy user be initiated to the registration of going of IMS network, parameter and initial registration are basic identical, and just the expires field behind the parameters C ontact in the REGISTER message is set to 0, and the expression user will go registration; Parse the address of its home network I-CSCF according to user's home network domain name.Send the REGISTER message of SIP signaling then.

(2) I-CSCF according to user's IMPU, IMPI at HSS inquiring user login state, if the user legal and the registration, the S-CSCF address the when user registers.I-CSCF transmits the REGISTER request to S-CSCF address selected or that return;

(3) S-CSCF is 0 according to the expires field of this request, knows that the user will go registration, and notice HSS upgrades user registration state, and HSS notice CRPF upgrades its state of user; Return 200OK and give RPF;

(4) RPF removes the user related information of its storage;

Embodiment seven: the logout flow path that network was initiated when the user in signatory walking circuit territory was linked into IMS as shown in Figure 14, go registration for the HSS decision makes the user in the present embodiment, RPF and P-CSCF close and establish, and HSS and CRPF close and be made as example, between use internal interface, be not limited thereto but use.

(1) CRPF receives the deletion subscriber data message that mobile CS network contraction user's HLR initiates, and triggers HSS and initiates the logout flow path of this user at the IMS network;

(2) HSS notice S-CSCF goes the registered user.

(3) S-CSCF sends NOTIFY notice User Status to both respectively according to the registration subscription information of user and P-CSCF and nullifies; And at＜contact〉event attribute of unit is changed to (rejected); RPF receives the back by applicative notifications UE, and the user has been nullified by IMS, and UE can not be in the business of initiating the IMS territory.

(4) notice HSS went registration to finish after S-CSCF received all 200OK that return; HSS notice CRPF upgrades its User Status;

Embodiment eight: when mobile CS network contraction user was linked into IMS, HLR revised the user data flow process as shown in Figure 15, and following flow process is that the HSS decision makes the user go registration, close with RPF and P-CSCF and to establish, HSS and CRPF are divided into example, between use the Diameter interface, be not limited thereto but use.

(1) the modification subscriber data message of mobile CS network contraction user's HLR initiation;

(2) CRPF proceeds to the conversion of IMS form with amended user contracting data and upgrades to HSS;

(3) HSS new data and return response more;

(4) CRPF returns the modification result to HLR;

Embodiment nine: the heavy register flow path that network was initiated when the user in signatory walking circuit territory was linked into IMS as shown in Figure 16, notify the user to initiate heavily to register behind the supposition S-CSCF registration timeout in the present embodiment, close with RPF and P-CSCF and to be made as example, between use internal interface, be not limited thereto but use.

(1) S-CSCF finds that user's term of validity is overtime, notifies the user heavily to register.S-CSCF sends NOTIFY to both respectively according to the registration subscription information of user and P-CSCF and notifies the user to initiate heavily to register; And at＜contact〉event attribute of unit is changed to (deactivated) (the expression network only re-registers user's login state deactivation just and can activate service state).

(2) RPF initiates heavily registration by applicative notifications UE;

(3)

S-CSCF notifies the HSS User Status after receiving all 200OK that return, and HSS notice CRPF upgrades its User Status;

(4) UE initiates to re-register;

Embodiment ten: when the user in signatory walking circuit territory is linked into IMS network booking reader switching flow as shown in Figure 17, RPF and P-CSCF close and establish in the present embodiment, but application is not limited thereto.

(1) S-CSCF is initiated to the flow process of user's subscription handover event after user registration success;

(2) interested AS also can be initiated to the flow process of user's subscription handover event after the success of user's third-party registration;

(3) UE initiates switching flow, notifies subscriber's handover event to take place after finishing, and can have new lane place or cell ID and other subscriber's parameters of interest in the message; Dissimilar according to what switch, also can when subscribing to, show as subscribers such as intra-office, interoffice, follow-up switchings and to want handover event type or a plurality of type of subscribing to;

Embodiment 11: after MGCF inquiry E.164 Number server is finished circuit domain sign and the conversion of IMS network identity, the user in signatory walking circuit territory in the called connection flow process of IMS network as shown in Figure 18, RPF and P-CSCF close and establish in the present embodiment, between use internal interface, be not limited thereto but use:

(1) UE 112 calls out the signatory circuit-domain network user UE 110 that registers in the IMS network in circuit-domain network; VMSC (visit ground mobile switch, the MSC of user's current service) have GMSC (the critical point mobile switch, when calling out and HLR obtain roaming information alternately) function, to the HLR request roaming information of UE110;

(2) the HLR CPRF address (E164 number) that registration obtains according to UE110 is to CRPF request distribution called subscriber's roaming number;

(3) CRPF distributes suitable MSRN (Mobile Station Roaming Number) according to called user information, this roaming number can indicating circuit territory network addressing to the MGCF entity of IMS network.And CRPF is registered to E.164 Number server with this roaming number and called subscriber at the IMPU of IMS network registry, so that inquire about after the MGCF.

(4) MSC routes the call to the MGCF entity of IMS network according to the parsing of roaming number;

(5) after MGCF receives calling, resolve its called number, discovery is the roaming number of IMS network allocation, then is initiated to the inquiry of E.164 Number server.Obtain the IMPU of called registration according to this roaming number.

Follow-up flow process is identical with called connection among the IMS.

Embodiment 12: after MGCF inquiry CRPF finishes circuit domain sign and the conversion of IMS network identity, the user in signatory walking circuit territory in the called connection flow process of IMS network as shown in Figure 19, RPF and P-CSCF close and establish in the present embodiment, but application is not limited thereto.Use the DIAMETER agreement between MGCF and the CRPF, but be not limited to this agreement when using;

(1) UE 112 calls out the signatory circuit-domain network user UE 110 that registers in the IMS network in circuit-domain network; VMSC has the GMSC function, to the HLR request roaming information of UE110;

(2) the HLR CPRF address (E.164 number) that registration obtains according to UE110 is to CRPF request distribution called subscriber's roaming number;

(3) CRPF distributes suitable MSRN according to called user information, this roaming number can indicating circuit territory network addressing to the MGCF entity of IMS network.

(4) MSC routes the call to the MGCF entity of IMS network according to the parsing of roaming number;

(5) after MGCF receives calling, resolve its called number, discovery is the roaming number of IMS network allocation, then is initiated to the inquiry of CRPF.

(6) behind the corresponding relation of CRPF according to this roaming number inquiry oneself preservation, return to the IMPU of the called registration of MGCF; Delete this corresponding relation afterwards, this roaming number is discharged;

(7) MGCF is called according to the IMPU addressing returned, and follow-up flow process is identical with called connection among the IMS.

Embodiment 13: MGCF inquiry CRPF finishes circuit domain sign and the conversion of IMS network identity, mobile CS network contraction user in the called connection flow process of IMS network as shown in Figure 20, following flow process is closed with RPF and P-CSCF and is made as example, but application is not limited thereto.

(1) UE 112 calls out the mobile CS network contraction user UE 110 that registers in the IMS network in circuit-domain network; VMSC has the GMSC function, to the HLR request roaming information of UE110;

(2) the HLR CPRF address (E.164 number) that registration obtains according to UE110 is to CRPF request distribution called subscriber's roaming number;

(3) CRPF distributes suitable MSRN according to called user information, this roaming number can indicating circuit territory network addressing to the MGCF entity of IMS network, the while, this MSRN was PSI related with CRPF in the IMS network.

(4) MSC routes the call to the MGCF entity of IMS network according to the parsing of roaming number; (5) after MGCF receives calling, resolve its called number, discovery is the PSI number of IMS network allocation, then directly calling is sent to corresponding AS by I-CSCF, and promptly CRPF handles.

(6) behind the corresponding relation of CRPF according to this roaming number inquiry oneself preservation, change out corresponding IMPU, be redirected returning to MGCF by 302; Delete this corresponding relation afterwards, this roaming number is discharged;

(7) MGCF is called according to the IMPU addressing returned, and follow-up flow process is identical with called connection among the IMS.

Embodiment 14: MGCF inquiry CRPF finishes circuit domain sign and the conversion of IMS network identity, mobile CS network contraction user in the called connection flow process of IMS network as shown in Figure 21, following flow process is closed with RPF and P-CSCF and is made as example, but application is not limited thereto.

(1) UE 112 calls out the mobile CS network contraction user UE110 that registers in the IMS network in circuit-domain network; VMSC has the GMSC function, to the HLR request roaming information of UE110;

(2) the HLR CPRF address (E.164 number) that registration obtains according to UE110 is to CRPF request distribution called subscriber's roaming number;

(3) CRPF distributes suitable MSRN according to called user information, this roaming number can indicating circuit territory network addressing to the MGCF entity of IMS network, the while, this MSRN was PSI related with CRPF in the IMS network.

(4) MSC routes the call to the MGCF entity of IMS network according to the parsing of roaming number;

(5) after MGCF receives calling, resolve its called number, discovery is the PSI number of IMS network allocation, then directly calling is sent to corresponding AS by I-CSCF, and promptly CRPF handles.

(6) CRPF according to the own corresponding relation of preserving of this roaming number inquiry after, change out corresponding IMPU, find S-CSCF that the user registers and calling sent to the S-CSCF processing by inquiry; Delete this corresponding relation afterwards, this roaming number is discharged;

Follow-up flow process is consistent with respective type call proceeding in the IMS network.

Claims (39)

1, a kind of IP Multimedia System is characterized in that for walking circuit territory contracted user provides process registration, and described method comprises the steps:

A, detect walking circuit territory CS contracted user and register relevant incident after, trade mark agency functional entity RPF selects to send the registration REGISTER message of SIP signaling to it behind the interrogation-call session control function entity I-CSCF;

B, I-CSCF receive login state from the described REGISTER message to home subscriber server HSS that inquire about described CS contracted user after;

C, HSS generate the ephemeral data of described CS contracted user at the IMS network, and return service-call session control function entity S-CSCF ability information to I-CSCF;

D, I-CSCF select S-CSCF according to described S-CSCF ability information, and transmit described REGISTER to it and ask, S-CSCF is forwarded to HSS with described request, and HSS finishes the registration at the IMS network, and circuit domain trade mark agency functional entity CRPF finishes the circuit domain registration.

2, method according to claim 1 is characterized in that, wherein step a specifically comprises:

A1, RPF are mapped as detected mobile CS contracted user circuit domain registered events IMS territory registered events and mobile CS contracted user's circuit domain sign are mapped as the IMS domain identifier;

A2, RPF select to send the registration REGISTER message of SIP signaling to it behind the I-CSCF according to described IMS domain identifier;

Wherein step b is specially: I-CSCF inquires about its login state according to described mobile CS contracted user's IMS domain identifier to HSS.

3, method according to claim 2, it is characterized in that, wherein the described circuit domain registered events of step a1 is mapped to IMS territory registered events and specifically comprises: the circuit domain user start is mapped as the IMS initial registration, the renewal of position first that circuit domain user roams to behind the reposition district is mapped as the IMS initial registration

Described circuit domain sign is mapped to the IMS domain identifier and specifically comprises:

Home domain name: the domain name of using the RPF belonging network is as home domain name, perhaps according to configuration, according to the different home domain of registered user's circuit domain number assignment;

User Part among temporary IP multimedia public identify IMPU, the IP multimedia private identity IMPI produces according to user's national mobile logo sign indicating number IMSI, domain name part adopts aforesaid way to produce, and the default IMPU that returns after user's registration adopts the form of " E.164 number @ home domain name " to generate;

Wherein being used among the step a2 selecting the IMS domain identifier of I-CSCF is home domain name.

4, method according to claim 1 is characterized in that, wherein the described ephemeral data of step c comprises the temporary mark of described mobile CS contracted user at the IMS network at least.

5, method according to claim 1 is characterized in that, wherein steps d specifically comprises:

D1, I-CSCF select S-CSCF to transmit described REGISTER request to it according to described S-CSCF ability information, and S-CSCF is forwarded to HSS with described request, and HSS finishes the registration at the IMS network;

D2, CRPF after detecting the circuit domain register requirement of HSS, initiate and HLR mutual, act on behalf of described mobile CS contracted user and finish registration in its circuit-domain network.

6, method according to claim 5, it is characterized in that, wherein steps d 2 also comprises: CRPF and described mobile CS contracted user's HLR obtains this user contracting data alternately, and proceeds to the mapping and the conversion of IMS formatted data, and the data after will changing then are sent to the HSS storage.

7, method according to claim 1 is characterized in that, wherein step a comprises that also authentication capability that RPF supports described mobile CS contracted user is mapped as the parameter in the REISTER message of SIP;

Wherein steps d also comprises:

HSS returns to S-CSCF by CRPF after described mobile CS contracted user's HLR request authentication vector is handled, S-CSCF finishes authentication process according to authentication vector.

8, method according to claim 7 is characterized in that, specifically comprises:

S-CSCF indicates the authentication mechanism of described mobile CS contracted user support and the type of Access Network according to user ID to HSS;

HSS asks authentication vector by CRPF to described mobile CS contracted user's attaching position register HLR;

HLR returns to the CRPF authentication vector, CRPF returns to HSS again, and HSS returns to S-CSCF with the authentication mechanism of network implementation, after S-CSCF receives the authentication responses of HSS, remove response XRES parameter and the preservation expected in the authentication vector, initiate the authentication challenge to the user then;

Whether the more described mobile CS contracted user of S-CSCF consistent by Authentication Response RES and the own XRES that preserves that the authentication challenge responses sends, as if both unanimities then authentication pass through and from HSS download user data.

9, method according to claim 7, it is characterized in that, the mapping of wherein said authentication capability specifically comprises: authorize the parameter in the Authorization header field in the expansion Session Initiation Protocol REGISTER message, described user's authentication capability is mapped as respectively " GSM-AKA ", " UMTS-AKA " and " CDMA-AKA ".

10, method according to claim 8 is characterized in that, the authentication mechanism that wherein said S-CSCF indicates described mobile CS contracted user to support to HSS is to realize by the spreading parameter of the Authorization header field among the multimedia authentication request MAR.

11, according to claim 1 or 7 described methods, it is characterized in that, wherein also comprise after the steps d:

Entity in the IMS network is subscribed to described mobile CS contracted user's handover event to RPF, and after RPF detection switching was finished, the notice events corresponding was to the subscriber.

According to claim 1 or 7 described methods, it is characterized in that 12, wherein also comprise after the steps d: S-CSCF is initiated to the third-party registration of application server AS according to the inspection of initial trigger condition iFC.

13, a kind of mobile CS contracted user is characterized in that at the deregistering method of IMS network described method comprises the steps:

A, after RPF detects mobile CS contracted user shut down event, act on behalf of the registration of going that described contracted user is initiated to the IMS network, select behind the interrogation-call session control function entity I-CSCF to go to register REGISTER message to what it sent the SIP signaling;

Go to register the REGISTER request to its forwarding behind S-CSCF when b, I-CSCF inquire about described contracted user and register;

C, S-CSCF notice HSS upgrades described contracted user's login state, and HSS notice CRPF upgrades described mobile CS contracted user's login state;

When d, CRPF do not detect the user and register in IMS in the certain hour section, and during this period of time do not receive the canceling position message of described user HLR yet, then remove these user-dependent all information of CRPF neutralization, and notify described user HLR user profile to remove.

14, method according to claim 13 is characterized in that, wherein step a specifically comprises:

A1, RPF are mapped to the IMS territory with detected mobile CS contracted user circuit domain shut down event and remove registered events and mobile CS contracted user's circuit domain sign is mapped to the IMS domain identifier;

A2, RPF select behind the I-CSCF to go to register REGISTER message to what it sent the SIP signaling according to described IMS domain identifier.

Network was initiated the method for cancellation when 15, a kind of mobile CS network contraction user was linked into IMS, it is characterized in that described method comprises the steps:

A, CRPF receive the deletion subscriber data message that mobile CS network contraction user's HLR initiates, and trigger HSS and initiate the logout flow path of described contracted user at the IMS network;

B, HSS notice S-CSCF goes the registered user, and S-CSCF notifies User Status to nullify respectively to described contracted user and P-CSCF, notifies described contracted user after RPF receives;

Notice CRPF upgraded its User Status after c, HSS went registration to finish notice, and CRPF returns the response of deletion user data success to HLR.

16, method according to claim 15 is characterized in that, wherein the described RPF of step b notifies the contracted user settling mode by application layer.

17, method according to claim 16 is characterized in that, the settling mode of wherein said client layer specifically comprises the verbal announcement of short message SMS or destructuring user data USSD or network.

Its HLR revised the method for user data when 18, a kind of mobile CS contracted user inserted the IMS network, it is characterized in that described method comprises the steps:

A, mobile CS network contraction user's HLR initiates to revise user data requests to CRPF;

B, CRPF proceed to the conversion of IMS form with amended user contracting data and upgrade to HSS;

C, HSS be new data and return response more, and CRPF returns the modification result to HLR.

Network was initiated heavy process registration when 19, a kind of mobile CS contracted user inserted the IMS network, it is characterized in that described method comprises the steps:

A, S-CSCF find that user's term of validity is overtime, notice RPF;

B, RPF notice UE initiates heavily registration;

Notice HSS network had gone to register this user after c, S-CSCF received all heavy registration notification acknowledge messages of returning, and HSS notice CRPF upgrades its User Status.

20, method according to claim 19 is characterized in that, wherein the described RPF notice of step b UE initiates heavily registration and adopts the application layer settling mode.

The method of network booking reader handover event is characterized in that described method comprises the steps: when 21, a kind of mobile CS contracted user inserted the IMS network

A, S-CSCF and/or AS are initiated to the flow process that RPF subscribes to described contracted user's handover event after user registration success;

B, described contracted user initiate switching flow, and RPF notice S-CSCF and/or AS handover event take place after finishing.

The method of called connection is characterized in that described method comprises the steps: when 22, a kind of mobile CS contracted user inserted the IMS network

After a, mobile switch MSC receive calling subscriber's call request, to called HLR request roaming information;

B, HLR distribute called subscriber's roaming number to CRPF request, the roaming number in CRPF distributor circuit territory, and circuit-domain network routes the call to the inlet entity of IMS network according to the parsing to the roaming number that distributed;

C, described inlet entity from CRPF obtain called after the sign of IMS network addressing called, finish call proceeding.

23, method according to claim 22 is characterized in that, wherein step b specifically comprises:

B1, HLR to CRPF request distribute called subscriber's roaming number, CRPF be call distribution E.164 form roaming number and roaming number and called subscriber registered to electronic code server ENUM at the user ID IMPU of IMS network SIP unified resource sign SIP URI form;

B2, circuit-domain network route the call to the inlet entity of IMS network according to the parsing of roaming number;

Wherein step c specifically comprises:

C1, described IMS Web portal entity are inquired about to E.164 Number server according to this roaming number, obtain the user ID of the SIP URI form in called subscriber IMS territory;

C2, described IMS Web portal entity are called according to described user ID addressing, finish call proceeding.

24, method according to claim 22 is characterized in that, wherein step b specifically comprises:

B1, HLR are to CRPF request distribution called subscriber's roaming number, and CRPF is the E.164 roaming number of form of call distribution;

B2, circuit-domain network are addressed to the inlet entity of .IMS network according to the roaming number that distributes;

Wherein step c specifically comprises:

C1, when described inlet entity is received the calling that comprises IMS netsurfing number, return corresponding IMS network identity according to this roaming number request CRPF;

The IMS network identity addressing that c2, described inlet entity basis are returned is called, finishes call proceeding.

25, method according to claim 22 is characterized in that, wherein step b specifically comprises:

B1, HLR are to CRPF request distribution called subscriber's roaming number, and CRPF is the E.164 roaming number of form of call distribution, and this roaming number is the public service identity PSI at IMS network identity CRPF;

B2, circuit-domain network are addressed to the inlet entity of IMS network according to described roaming number;

Wherein step c specifically comprises:

When the inlet entity of c1, described IMS network is received the calling that comprises IMS netsurfing number, route the call to CRPF according to described PSI;

After c2, CRPF are converted to corresponding IMS network identity with roaming number, control the S-CSCF that the 3PCC function routes the call to described called subscriber's registration to the S-CSCF or the use third party call of described called subscriber's registration by 302 redirected calls.

According to claim 22 or 23 or 24 or 25 described methods, it is characterized in that 26, the inlet entity of wherein said IMS network is MGCF entity MGCF.

27, a kind of IMS network is the system that mobile CS contracted user provides registration, it is characterized in that described system comprises:

RPF, mobile CS contracted user of agency is in the registration of IMS network after being used for detecting mobile CS contracted user and being mapped to IMS territory registered events at the registered events of circuit domain and with it;

HSS is used for producing ephemeral data into described mobile CS contracted user at the IMS network;

CRPF, the HLR that detects after the HSS register requirement incident with described mobile CS contracted user finishes the registration of described mobile CS contracted user in circuit domain alternately.

28, system according to claim 27 is characterized in that, described RPF also is used for acting on behalf of the access authentication of described mobile CS contracted user at the IMS network.

29, system according to claim 27 is characterized in that, described CRPF also is used for being mobile CS network contraction user's called connection distributor circuit territory roaming number, and this roaming number is converted to the sign of described contracted user at the IMS network.

30, system according to claim 27 is characterized in that, described CRPF also be used for processing circuit domain network entity HLR modification or the deletion user data requests.

31, method according to claim 27 is characterized in that, when described RPF and P-CSCF realized at same entity, its interface was an internal interface; Described RPF and P-CSCF be not when same entity is realized, interface is the Gm of IMS definition.

32, method according to claim 27 is characterized in that, its interface was the MAP interface of 3GPP or 3GPP2 definition, perhaps packet based protocol Diameter or SIP when HSS and CRPF branch were arranged.

33, method according to claim 27 is characterized in that, when HSS and CRPF were set to one, its interface was an internal interface.

34, method according to claim 27 is characterized in that, the interface between described CRPF and user's the HLR adopts the MAP of 3GPP or 3GPP2 definition mutual.

35, a kind of functional entity of acting on behalf of mobile CS territory contracted user at the IMS network registry, it is characterized in that the described mobile CS territory contracted user of agency was at the IMS network registry after described entity can be mapped to detected mobile CS contracted user circuit domain registered events IMS territory registered events and mobile CS contracted user's circuit domain sign is mapped to the IMS domain identifier.

36, entity according to claim 35 is characterized in that, described entity can also be mapped to the authentication capability that detected CS contracted user supports parameter in the SIP registration message and act on behalf of the authentication of described mobile CS contracted user in the IMS territory.

37, a kind of mobile CS territory contracted user acts on behalf of the functional entity in the circuit domain registration when the IMS network registry, it is characterized in that, described entity can it be registered in circuit domain with the mutual back agency of mobile CS territory contracted user's HLR.

38, according to the described entity of claim 37, it is characterized in that, after described entity can also detect the circuit domain authentication request incident that HSS sends, obtain authorization data alternately with mobile CS network contraction user's HLR.

39, according to the described entity of claim 37, it is characterized in that, described entity can also obtain this user contracting data alternately with mobile CS network contraction user's HLR, and proceeds to the mapping and the conversion of IMS formatted data, and the data after will changing then are sent to the HSS storage.

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