CN101931923A - Method for user registration of IP multimedia subsystem network and service fulfillment system - Google Patents
Method for user registration of IP multimedia subsystem network and service fulfillment system Download PDFInfo
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Abstract
The invention relates to a method for user registration of an IP multimedia subsystem network. After UE sends a registration request to P-CSCF of a local IMS network in a roaming state, the method comprises the following steps that: the P-CSCF forwards the registration request to S-CSCF of the local IMS network through I-CSCF of the local IMS network, and the S-CSCF forwards the registration request to E-MSC of the local IMS network; after receiving the registration request, the E-MSC sends a position update request to HLR or HSS of a UE home network if user data of the UE does not exist in the E-MSC; the HLR or HSS returns the user data of the UE to the E-MSC after receiving the position update request; and the E-MSC stores the user data, identifies the UE as registered UE and returns a registration response message to the S-CSCF; and the S-CSCF completes subsequent registration processes.
Description
Technical field
The present invention relates to the communications field, relate in particular to the user registering method and the business realizing system of a kind of IP (Internet Protocol, Internet Protocol) multi-media subsystem network.
Background technology
In order to keep third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) in the competitiveness of moving communicating field, 3GPP is just endeavouring research at present to packet switched core network (Packet Switched Core, abbreviate PS Core as) and global system for mobile communications wireless access network (Universal Mobile Telecommunication System Radio Access Network, abbreviate UTRAN as) evolution, purpose is to make the PS Core (being called for short EPC) of evolution that higher transmission rate can be provided, shorter transmission delay, and support E-UTRAN (Evolved UTRAN, the UTRAN of evolution), GERAN (GSM EDGE radio access network, global system for mobile communications enhanced data rates global system for mobile communications evolution technology wireless access network), UTRAN, mobile management between WLAN (Wireless Local Area Network, WLAN (wireless local area network)) and other non-3 GPP access network network.The mobile communication system of this evolution is called as the grouping domain system (Evolved Packet System abbreviates EPS as) of evolution.
Present stage, speech business is the important revenue source of mobile operator, therefore, how to guarantee to realize that the high-quality speech business is extremely important in EPS.At present, everybody relatively pays close attention to and adopts voice-based Traditional IP IP multimedia subsystem, IMS (IMS) to realize speech business.
Fig. 1 is the IMS network architecture schematic diagram of prior art, comprises following network element:
101: subscriber equipment (User Equipment abbreviates UE as), the P-CSCF that is used for being linked into by access device the IMS network registers, and sets up session connection with far-end;
102: Proxy Call Session Control Function (Proxy Call Session Control Function abbreviates P-CSCF as) is used to carry out the route of message, and sets up Security Association with UE;
103: query call conversation control function (Interrogating Call Session Control Function, abbreviate I-CSCF as), be used for and HSS (Home Subscriber Server, home subscriber server) mutual, request HSS is that UE distributes S-CSCF, or the pairing S-CSCF of inquiring user;
104: service call conversation control function (Serving Call Session Control Function abbreviates S-CSCF as) is used to the user that functions such as registration, calling control are provided;
105: home subscriber server (HSS) is used to preserve user's subscription data, for calling out or session provides support.
Adopt framework shown in Figure 1, when user/UE was in roaming state, UE registered to home network by the P-CSCF that is linked into visit ground; After succeeding in registration, if user's initiation session business, UE sends session invitation message to home network, by the S-CSCF of home network the session invitation message is transmitted to the called subscriber, and session control is finished by home network.
Under the situation of IMS network partial deployment, if the user roams into the IMS network on visit ground, and the go-between between the IMS network on the IMS network of ownership place and visit ground is not disposed the IMS network, then might be (for example with the message of UE, registration message, session invitation message) be routed to home network, cause the IMS service fail; Equally, home network mails to the also possibly IMS network that can't be routed to visit ground of message (for example, session invitation message) of UE.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, and the business realizing system of a kind of user registering method and IMS network is provided, and registers at local IMS network to realize visitor.
In order to address the above problem, the invention provides a kind of user registering method of IP Multimedia System network, when user equipment (UE) under the roaming state after the Proxy Call Session Control Function P-CSCF of local IP Multimedia System IMS network sends register requirement, this method comprises:
Described P-CSCF by the service call conversation control function S-CSCF that the query call conversation control function I-CSCF of local IMS network is transmitted to local IMS network, is transmitted to the E-MSC of enhancing mobile switching centre of local IMS network by described S-CSCF with it with described register requirement;
After receiving described register requirement, if there is not the user data of described UE among the E-MSC, then attaching position register HLR or the home subscriber server HSS to described UE home network sends position updating request; After receiving described position updating request, described HLR or HSS return to E-MSC with the user data of described UE; E-MSC preserves described user data, described UE is designated registered, and returns registration reply message to described S-CSCF, finishes follow-up register flow path by described S-CSCF.
In addition, receive described register requirement after, if the user data of described UE is arranged among the E-MSC, then E-MSC is designated described UE registered, and returns registration reply message to described S-CSCF, finishes follow-up register flow path by described S-CSCF.
In addition, described P-CSCF carries out described forwarding according to the described register requirement that carrier policy will receive by described I-CSCF;
Described carrier policy is: the register requirement that all UE send is all carried out described forwarding by the I-CSCF of described local IMS network, or only will not sign register requirement that the UE of IMS interconnection agreement the sends I-CSCF by described local IMS network and carry out described forwarding.
In addition, after described P-CSCF receives described register requirement, it is transmitted to before the described I-CSCF, this method also comprises:
Described P-CSCF uses the home domain name of carrying in the described register requirement to send I-CSCF address lookup message to domain name system DNS, with inquiry I-CSCF address;
After receiving described I-CSCF address lookup message, DNS extracts the home domain name in this message, and the address of described home domain name being translated into the I-CSCF of local IMS network according to carrier policy, and the I-CSCF address is returned to described P-CSCF;
The I-CSCF address that described P-CSCF uses DNS to return sends to described register requirement the I-CSCF of described local IMS network;
Described carrier policy is: all home domain name that will receive are all translated into the address of the I-CSCF in the described local IMS network or only will not signed the address that the home domain name of the network of IMS interconnection agreement is translated into the I-CSCF in the described local IMS network.
In addition, before described UE sent described register requirement, this method also comprised:
Described UE sends to packet data network gateway P-GW and obtains P-CSCF full name message, and P-GW will return to described UE from P-CSCF full name that the DHCP Dynamic Host Configuration Protocol server gets access to;
Described UE is provided with home domain name according to described P-CSCF full name, and described home domain name is included in sends to described P-CSCF in the described register requirement;
Described P-CSCF sends to described register requirement according to the home domain name in the described login request message I-CSCF of described local IMS network.
In addition, after receiving described register requirement, if the user ID that does not have among the E-MSC to carry in the user data of described UE and the described register requirement is not international mobile subscriber identity IMSI, then E-MSC obtains one of in the following way the IMSI of described UE, and uses the IMSI that obtains to send described position updating request:
If the interim private user identity that the user ID of carrying in the described register requirement is to use IMSI to derive, then E-MSC oppositely derives to interim private user identity, obtains IMSI; Or
If the user ID of carrying in the described register requirement is the IMS private user identity, then E-MSC sends the refusal registration message to described UE, initiates registration again by the interim private user identity that this message indicates described UE to use IMSI or use to be derived by IMSI; And after receiving the register requirement that described UE resends, from this request, obtain IMSI or from this request, obtain interim private user identity and it is oppositely derived and obtain IMSI; Or
E-MSC sends initial session protocol sip subscribe or SIP query messages to obtain IMSI to described UE; Or
E-MSC uses the IMS private user identity that carries in the described register requirement to obtain IMSI to described HSS.
In addition, comprise initial filter standard or norm iFC in the described registration reply message;
Comprise among the described iFC: trigger described S-CSCF and initiate the registered events trigger criteria of third-party registration and/or trigger described S-CSCF and initiate the caller event trigger standard of third party call control and/or trigger described S-CSCF initiates called event trigger standard from third party call control to E-MSC to E-MSC to E-MSC.
In addition, comprise the described S-CSCF of triggering initiates registered events trigger criteria from third-party registration to E-MSC among the described iFC;
After described S-CSCF receives described registration reply message, send the third-party registration request, carry user ID and the current access address of described UE of described UE in this request to E-MSC;
After receiving described third-party registration request, E-MSC preserves user ID and the current access address of described UE of described UE.
The present invention also provides a kind of business realizing system of IP Multimedia System network, and this system provides professional as visited network for the UE that is in roaming state, and links to each other with the HLR or the HSS of described UE home network; This system comprises: P-CSCF, I-CSCF, S-CSCF and E-MSC; Wherein:
Described P-CSCF is used for after the register requirement that receives the UE transmission that is in roaming state described register requirement being transmitted to described S-CSCF by described I-CSCF, by described S-CSCF it is transmitted to described E-MSC;
Described E-MSC is used for after receiving described register requirement, judges the local user data that whether stores described UE:
If described E-MSC does not store this locality the user data of described UE, then send position updating request to obtain the user data of described UE to described HLR or HSS; After receiving the user data that described HLR or HSS return, preserve described user data, described UE is designated registered, and return registration reply message, finish follow-up register flow path by described S-CSCF to described S-CSCF;
If described E-MSC this locality stores the user data of described UE, then described UE is designated registeredly, and return registration reply message to described S-CSCF, finish follow-up register flow path by described S-CSCF.
In addition, described P-CSCF carries out described forwarding according to the described register requirement that carrier policy will receive by described I-CSCF;
Described carrier policy is: the register requirement that all UE send is all carried out described forwarding by the I-CSCF of described local IMS network, or only will not sign register requirement that the UE of IMS interconnection agreement the sends I-CSCF by described local IMS network and carry out described forwarding.
In addition, also comprise DNS in the described system;
Described P-CSCF also uses the home domain name of carrying in the described register requirement to send I-CSCF address lookup message to described DNS, with inquiry I-CSCF address after receiving described register requirement, it is transmitted to before the described I-CSCF;
Described DNS is used for after receiving described I-CSCF address lookup message, extract the home domain name in this message, and the address of translating into described I-CSCF according to the described home domain name that carrier policy will receive, and the I-CSCF address returned to described P-CSCF;
The I-CSCF address that described P-CSCF uses described DNS to return sends to described I-CSCF with described register requirement;
Described carrier policy is: all home domain name that will receive are all translated into the address of the I-CSCF in the described system or only will not signed the address that the home domain name of the network of IMS interconnection agreement is translated into the I-CSCF in the described system.
In addition, after receiving described register requirement, if the user ID that does not have among the described E-MSC to carry in the user data of described UE and the described register requirement is not IMSI, then described E-MSC one of also is used in the following way obtaining the IMSI of described UE, and uses the IMSI that obtains to send described position updating request:
If the interim private user identity that the user ID of carrying in the described register requirement is to use IMSI to derive, then described E-MSC oppositely derives to this interim private user identity, obtains IMSI; Or
If the user ID of carrying in the described register requirement is the IMS private user identity, then described E-MSC sends the refusal registration message to described UE, initiates registration again by the interim private user identity that this message indicates described UE to use IMSI or use to be derived by IMSI; And after receiving the register requirement that described UE resends, from this request, obtain IMSI or from this request, obtain interim private user identity and it is oppositely derived and obtain IMSI; Or
Described E-MSC sends initial session protocol sip subscribe or SIP query messages to obtain IMSI to described UE; Or
Described E-MSC uses the IMS private user identity that carries in the described register requirement to obtain IMSI to described HSS.
In addition, described S-CSCF also is used for after receiving described registration reply message, send the third-party registration request according to the iFC that comprises in the described registration reply message to described E-MSC, carry user ID and the current access address of described UE of described UE in this request;
Described E-MSC also is used for after receiving described third-party registration request, preserves user ID and the current access address of described UE of described UE.
In sum, the present invention strengthens mobile switching centre (E-MSC) by being provided with in local IMS network, in the registration process of visitor, send position updating request to obtain the user data of visitor by E-MSC to the HSS/HLR of user attaching network, realize this locality storage of the user data of visitor, and then realized this locality registration of visitor.
Adopt IMS network local deployment framework provided by the invention, and adopt the EPS network insertion to realize the system and method for CS business, solve the roaming problem of former IMS network partial deployment, adopt the IMS of standard to access terminal simultaneously, reduce user's overlapping investment because of the network evolution process.
Description of drawings
Fig. 1 is the IMS network architecture schematic diagram of prior art;
Fig. 2 is the Organization Chart one of the business realizing system of embodiment of the invention IMS network;
Fig. 3 is the Organization Chart two of the business realizing system of embodiment of the invention IMS network;
Fig. 4 carries out the process registration flow chart for adopting system architecture of the present invention;
Fig. 4 a inserts local IMS network, when initiating registration by local IMS network, selects the first method flow chart of local IMS network for this UE/ user as UE;
Fig. 4 b inserts local IMS network, when initiating registration by local IMS network, selects the second method flow chart of local IMS network for the user of this UE as UE;
Fig. 4 c inserts local IMS network, when initiating registration by local IMS network, is selected the method flow diagram of local IMS network by UE as UE;
Fig. 4 d is that E-MSC receives the method flow diagram that obtains the IMSI of respective user after the login request message;
Fig. 5 is the Organization Chart three of the business realizing system of embodiment of the invention IMS network;
Fig. 6 works the method flow diagram of exhaling for adopting system architecture of the present invention;
Fig. 7 carries out the method flow diagram of exhaling eventually for adopting system architecture of the present invention.
Embodiment
Core concept of the present invention is, in local IMS network, be provided with and strengthen mobile switching centre (E-MSC), when the user under being in roaming state (being called visitor) initiates registration by P-CSCF, send the user data that position updating request is obtained visitor by E-MSC HSS/HLR to the user attaching network in the registration process of visitor, with this locality storage of the user data of realizing visitor, and then realize this locality registration of visitor.
Describe the present invention below in conjunction with drawings and Examples.
Fig. 2 is the Organization Chart one of the business realizing system of embodiment of the invention IMS network, comprising:
201: subscriber equipment (User Equipment abbreviates UE as); Possess the IMS ability, support Session Initiation Protocol, the P-CSCF that is used for being linked into by access device the IMS network registers, and sets up session connection with far-end;
202: strengthen (the Enhanced Mobile Switch Center of mobile switching centre, abbreviate E-MSC as) server, be the newly-increased network element of the present invention, E-MSC server (abbreviating E-MSC as) is a physical entity, possess circuit switching (exchange of media) ability and signaling protocol transfer capability, and the ISC interface and the Cx interface of support standard are registered in this locality that can realize visitor.
For local IMS network, E-MSC has realized the function of HSS and AS (application server); From the angle of CS network, E-MSC has realized the function of MSC.
Specifically, E-MSC possesses following function:
Go into to call for when asking (being final call request) when what E-MSC received that remote subscriber initiates, can invite request to roaming in local IMS terminal initiation session as the user agent;
203: CSCF (Call Session Control Function, abbreviate CSCF as), can be further divided into: query call conversation control function (Interrogating CSCF, abbreviate I-CSCF as), Proxy Call Session Control Function (Proxy Call Session Control Function, abbreviate P-CSCF as) and service call conversation control function (Serving CSCF abbreviates S-CSCF as).Wherein:
P-CSCF is used to carry out the route of message, and sets up Security Association with terminal; In addition, P-CSCF can route the request to the I-CSCF of local IMS network after receiving the register requirement of visitor;
I-CSCF is used for E-MSC mutual, and request E-MSC distributes S-CSCF for the user, or the residing S-CSCF of inquiring user;
S-CSCF is used to the user that functions such as registration, calling control are provided.
204: attaching position register (Home Location Register abbreviates HLR as) or home subscriber server (Home Subscriber Server abbreviates HSS as);
HSS/HLR is used to preserve user's subscription data, for calling out or session provides support, and when receiving the position updating request that E-MSC sends user data is returned to E-MSC.
HLR can think the subclass of HSS, be traditional CS (Circuit Switched, circuit switching) territory and PS (Packet Swithed, packet switching) territory service, HLR can unify with HSS, is positioned at same physical entity, also can be positioned on the different physical entities, exist interface between HLR and the HSS this moment, realizes the mutual of information.
Fig. 3 is the Organization Chart two of the business realizing system of embodiment of the invention IMS network, comprise the operation system that adopts IMS network of the present invention in this Organization Chart and registered related network element, wherein show each network element in the abridged access network part among Fig. 2: Mobility Management Entity (Mobility Management Entity, abbreviate MME as), gateway (Serving Gateway, abbreviate S-GW as), packet data network gateway (Packet DataNetwork Gateway, be called for short PDN GW or P-GW), Dynamic Host Configuration Protocol server (Dynamic Host Configuration Protocol Server abbreviates DHCP Server as); And show abridged domain name system among Fig. 2 (Domain Name System abbreviates DNS as); In addition CSCF further is subdivided into P-CSCF, I-CSCF and S-CSCF; Wherein:
Mobility Management Entity (MME) is the chain of command entity, be used for interim storing subscriber information, and be in charge of and store the UE context (such as the UE/ user ID, mobility management states, user security parameters etc.), for the user distributes temporary mark, when quartering at this tracing area or this network, is responsible for UE this user is carried out authentication;
Gateway (S-GW) is a user entity, is responsible for carrying out the route processing of user face data;
Packet data network gateway (P-GW) is the gateway that UE inserts PDN (Packet Data Network, Packet Data Network).When P-GW receive that UE sends obtain P-CSCF full name message the time, will return to UE from P-CSCF full name that Dynamic Host Configuration Protocol server gets access to.
P-GW and S-GW can close and be located in the physical entity.
Domain name system (DNS) is used for domain name is translated as corresponding IP address.
Dynamic Host Configuration Protocol server (DHCP Server) is used for P-CSCF full name or address dynamically are provided, and dns address is provided.
The concrete function of each network element shown in Figure 3 also will be described in more detail below.
Fig. 4 carries out the process registration flow chart for adopting system architecture of the present invention; In this flow process, after E-MSC receives the login request message that S-CSCF transmits,, then initiate position updating request, to obtain user data to HSS/HLR if there is not corresponding user data among the E-MSC; User data returns registration reply to S-CSCF after obtaining successfully, comprises trigger criteria (be also referred to as initial filter standard or norm, promptly Initial Filter Criteria abbreviates iFC as) and triggering address that E-MSC generates in this response message; As shown in Figure 4, this method comprises the steps:
401, UE sends login request message to the P-CSCF of local IMS network (be the P-CSCF of visited network, abbreviate local P-CSCF as) under roaming state, carries User Identity in this message;
402, after local P-CSCF receives login request message, this forwards is given the I-CSCF (be the I-CSCF of visited network, abbreviate local I-CSCF as) of local IMS network;
Can adopt several different methods that above-mentioned login request message is transmitted to local I-CSCF among the present invention, particular content can vide infra to the description part of Fig. 4 a～4c.
403, after local I-CSCF receives login request message, send query messages to the E-MSC of local IMS network, with the address of inquiry S-CSCF;
404, E-MSC assigns the address of the S-CSCF (abbreviating local S-CSCF as) of a local IMS network, and it is returned to local I-CSCF;
405, local I-CSCF sends login request message to local S-CSCF;
406, after local S-CSCF receives login request message, send login request message to E-MSC;
407, receive login request message after, if there is not corresponding user data among the E-MSC, then send position updating request, to obtain user data to the HSS/HLR of UE home network;
If corresponding user data is arranged among the E-MSC, then E-MSC is designated UE (user) registered, and return registration reply message to local S-CSCF, the trigger criteria of carrying the E-MSC generation in this message (is also referred to as initial filter standard or norm, be Initial Filter Criteria, abbreviate iFC as) and trigger address (being the address of E-MSC), and jump to step 412;
Comprise in the above-mentioned trigger criteria: the trigger criteria of incidents such as registered events, caller incident, called event.Wherein, the trigger criteria of registered events can trigger local S-CSCF and carries out third-party registration.
Comprise in the user data: information such as customer position information, CAMEL-Subscription-Information, business datum.
In this step, E-MSC need use user's IMSI (International Mobile Subscriber Identifier, international mobile subscriber identity) obtains user data, if the user ID in the login request message is not IMSI, then E-MSC can adopt several different methods to obtain user's IMSI, and concrete grammar can vide infra to the description part of Fig. 4 d.
408, HSS/HLR sends to E-MSC and inserts user data requests, carries the user data of respective user in this message, comprises the user in the user data circuit domain business data signed (abbreviating user's circuit domain service data as);
409, E-MSC preserves the user data that receives, and returns user data to HSS/HLR and inserts response message;
410, after HSS/HLR receives that the user data of E-MSC transmission inserts response message, upgrade response message to the E-MSC home position;
411, after E-MSC received position update response information, identifying user was registered, and returned registration reply message to local S-CSCF, carried trigger criteria (being iFC) and triggering address (being the address of E-MSC) that E-MSC generates in this message;
Comprise in the above-mentioned trigger criteria: the trigger criteria of incidents such as registered events, caller incident, called event.Wherein, the trigger criteria of registered events will trigger S-CSCF and carry out third-party registration.
412～414, local S-CSCF sends registration to UE and finishes message, and notice UE succeeds in registration;
415, S-CSCF sends third-party registration request, the user ID of carrying UE in this request, and the current access address of UE according to the registered events trigger criteria among the iFC to E-MSC;
416, after E-MSC receives the third-party registration request, preserve user ID and the current third party's log-on messages such as access address of UE of UE, and return registration to local S-CSCF and finish message.
It should be noted that step 415～416 are optional step; E-MSC preserves the current access address of UE so that at follow-up realization business continuance; The concrete grammar of realizing business continuance has exceeded category of the present invention.
Fig. 4 a inserts local IMS network, when initiating registration by local IMS network, selects first method (promptly the login request message that receives being transmitted to the method for local I-CSCF in the step 402) flow chart of local IMS network for this UE/ user as UE.In this flow process, be that the user selects local IMS network by the access network element P-CSCF of local IMS network.
In the prior art, P-CSCF can be transmitted to login request message the I-CSCF of home network according to the home domain name of carrying in this message after receiving login request message; And in the present embodiment, P-CSCF can according to carrier policy, directly be routed to local I-CSCF to login request message after receiving login request message, selects the E-MSC of local IMS network to register by local I-CSCF.
Shown in Fig. 4 a, this method specifically comprises following steps:
4a01 (being step 401), UE send login request message to local P-CSCF, carry home domain name and User Identity in this message;
4a02, receive login request message after, P-CSCF is according to User Identity and carrier policy, judge whether to select local IMS network (judging whether that promptly the login request message that will receive is transmitted to local I-CSCF and handles), concrete judgement and selection strategy can be:
All select local I-CSCF to transmit login request message (be about to local I-CSCF and be configured to unconditionally select local IMS network) for all users; Or
4a03, when judge to need selecting local I-CSCF (promptly selecting local IMS network to carry out this locality registration), P-CSCF is to local I-CSCF forwarding login request message.
Fig. 4 b inserts local IMS network, when initiating registration by local IMS network, selects second method (promptly the login request message that receives being transmitted to the method for local I-CSCF in the step 402) flow chart of local IMS network for the user of this UE as UE.In this flow process, be that the user selects local IMS network by DNS.
In the prior art, P-CSCF need be according to the I-CSCF address of the home domain name of carrying in this message to DNS inquiring user ownership place after receiving login request message, and DNS can translate into this home domain name the address of the I-CSCF of a home network; And in the present embodiment, DNS can translate into home domain name the I-CSCF address of local IMS network according to carrier policy.
Shown in Fig. 4 b, this method specifically comprises following steps:
4b01 (being step 401), UE send login request message to local P-CSCF, carry home domain name and User Identity in this message;
4b02, receive login request message after, P-CSCF sends I-CSCF address lookup message to local dns, with the address of the I-CSCF of inquiry home network, carries the home domain name of carrying in the login request message in this query messages;
After 4b03, DNS receive above-mentioned query messages, carry out following processing according to carrier policy:
4b04, DNS return to P-CSCF with the I-CSCF address.
Fig. 4 c inserts local IMS network, when initiating registration by local IMS network, is selected method (promptly making local P-CSCF in the step 402 login request message that receives is transmitted to the method for the local I-CSCF) flow chart of local IMS network by UE as UE.In this flow process, after UE obtains P-CSCF full name, home domain name is set according to P-CSCF full name.Flow process occurs in before the step 401 shown in Fig. 4 c, specifically comprises following steps:
4c01, UE send to P-GW and obtain P-CSCF full name message;
4c02, P-GW are from Dynamic Host Configuration Protocol server acquisition request P-CSCF full name;
4c03, Dynamic Host Configuration Protocol server return P-CSCF full name to P-GW;
4c04, P-GW return P-CSCF full name to UE;
After 4c05, UE receive P-CSCF full name,, then home domain name (soon the character string after " @ " character is set to home domain name in P-CSCF full name) is set according to P-CSCF full name if wish to use local IMS business; After this, in the login request message of UE in step 401 this home domain name is included in the login request message and registers, in step 402, local P-CSCF gives local I-CSCF according to the home domain name in the login request message with this forwards.
Fig. 4 d is that E-MSC receives the method flow diagram that obtains the IMSI of respective user after the login request message; This flow process has been described in the step 407 of Fig. 4, and E-MSC receives the method for obtaining the IMSI of respective user after the login request message, and shown in Fig. 4 d, this method comprises the steps:
4d01, receive login request message after, E-MSC extracts the user ID in this message, and judges whether user ID is IMSI, if not, execution in step 4d02 then, otherwise this flow process finishes;
If the 4d02 user ID is not IMSI, then E-MSC one of can be in the following way obtains corresponding IMSI:
Mode one: comprise following substep:
A1: if the interim private user identity that user ID is to use IMSI to derive, then E-MSC oppositely derives to interim private user identity, draws corresponding IMSI; Or
Mode two: comprise following substep:
B1: if user ID is the IMS private user identity, E-MSC can send the refusal registration message to UE, refuse this registration, and in this message, comprise the information that the indication user uses IMSI or uses the interim private user identity derived by IMSI to register;
After b2:UE receives the refusal registration message, use IMSI or use the interim private user identity of deriving by IMSI to initiate registration again according to the above-mentioned information that comprises in this message;
B3: after receiving the register requirement that UE resends, E-MSC obtains IMSI or obtains interim private user identity and it is oppositely derived from this request and obtains corresponding IMSI from this request; Or
Mode three: comprise following substep:
C1:E-MSC to UE send that SIP (Session Initial Protocol, initial session protocol) subscribes to or the SIP query messages to obtain the IMSI of UE;
C2:UE returns user IMSI to E-MSC after receiving sip subscribe or SIP query messages; Or
Mode four: comprise following substep:
D1:E-MSC uses the IMS private user identity that carries in the register requirement to obtain corresponding IMSI to the HSS of UE home network;
D2:HSS returns the IMSI of IMS private user identity binding to E-MSC.
Fig. 5 is the Organization Chart three of the business realizing system of embodiment of the invention IMS network, related network element when having comprised the business realizing system that adopts IMS network of the present invention in this Organization Chart and calling out wherein shows each network element in the abridged access network part among Fig. 2: Mobility Management Entity (MME), gateway (S-GW), packet data network gateway (P-GW); And CSCF further is subdivided into P-CSCF and S-CSCF; In addition, also show the network element that the CS network among Fig. 2 is comprised in this Organization Chart: media gateway (Media Gateway, abbreviate MGW as), gateway MSC (Gateway Mobile Switching Center, abbreviate GMSC as), public switch telephone network (Public Switched Telephone Network abbreviates PSTN as); Wherein:
Media gateway (MGW) is used to provide media bearer;
Gateway MSC (GMSC) is used for carrying out signalling route when receiving initial address message;
(Public Switched Telephone Network PSTN), refers to fixed telephone network here to public switch telephone network.
The concrete function of each network element shown in Figure 5 also will be described in more detail below.
Fig. 6 works the method flow diagram of exhaling for adopting system architecture of the present invention; Exhale in the process rising, local S-CSCF is routed to E-MSC by the caller event trigger standard that triggers among the iFC with the session invitation message, and E-MSC carries out the signaling protocol conversion, and the IMS signaling is converted to the CS signaling, sets up to call out with far-end to be connected; Flow process shown in Figure 6 specifically comprises the steps:
601, the UE that successfully carries out local registration carries calling number and called number to local P-CSCF transmission session invitation message in this message;
602, local P-CSCF transmits session invitation message according to the routing iinformation that writes down in this UE registration process to local S-CSCF;
603, receive session invitation message after, it (is that local S-CSCF does not call out control that local S-CSCF triggers third party call control according to the caller event trigger standard among the iFC, and call out control by E-MSC), session invitation message is routed to E-MSC;
604, E-MSC (for example calls out control according to the user data that obtains in this UE registration process to calling, judge whether to allow this UE to make a call), call out and send 200 OK message (not shown)s to UE after control is finished, to set up the media bearer (IP carrying) between UE and the E-MSC; Send initial address message (IAM) according to called number to the PSTN at called subscriber place then, carry calling number and called number in this message.
605, during the called user terminal ring, PSTN finishes message (ACM) to the E-MSC return address;
Mutual through step 604 and 605 set up the media bearer (CS carrying) between the PSTN at E-MSC and called subscriber place.
606～608, E-MSC finishes the ALERTING message that message (ACM) converts SIP to the address of circuit domain, and ALERTING message is transmitted to call subscriber terminal (UE) by local S-CSCF and local P-CSCF;
609, behind the called subscriber's call establishment among the PSTN, the response message (ANM) to E-MSC transtation mission circuit territory;
610～612, receive the response message (ANM) of circuit domain after, E-MSC connects the media bearer between itself and call subscriber terminal (UE) and far-end PSTN, and sending response message (200OK message) to call subscriber terminal (UE) by local S-CSCF and local P-CSCF, subscriber call is answered.
Fig. 7 carries out the method flow diagram of exhaling eventually for adopting system architecture of the present invention; Exhaling in the process eventually, exhale the request of setting up (initial address message) end of receiving circuit domain after, E-MSC initiates the SIP session to called subscriber (UE) and sets up request (session invitation message) as the user agent, finishes call establishment; Method shown in Figure 7 comprises the steps:
When 701, PSTN called out the UE (called subscriber) roamed into local IMS system, PSTN sent initial address message (IAM) to the GMSC of this called subscriber's home network, carries calling number and called number (being the number of UE) in this message;
702, after the GMSC of called subscriber's home network receives initial address message, send route requests to the HSS/HLR of called subscriber's home network, to obtain called subscriber's routing iinformation;
703, HSS/HLR knows that according to the position updating request (step 407) that is sent by E-MSC in called subscriber (UE) registration process called subscriber's current roaming is in the local IMS network of E-MSC administration, therefore send the request of Providing Roaming Number to E-MSC, wherein comprise called number;
704～705, receive the request of Providing Roaming Number after, E-MSC distributes one to point to local roaming number, preserves the corresponding relation of roaming number and called number; And roaming number being returned to the HSS/HLR of called subscriber's home network by response message, the HSS/HLR of called subscriber's home network returns to GMSC with roaming number again;
706, GMSC sends initial address message (IAM) according to roaming number to E-MSC, so that route the call to E-MSC, carries above-mentioned roaming number (as called number) and dialing number information in this message;
707, receive initial address message (IAM) after, E-MSC judges that the called number in this message is the roaming number that this network element distributes, the called number of preserving before therefore finding according to this roaming number; E-MSC calls out control according to the user data that obtains in called number and this UE registration process to calling, calls out the roaming number that uses after control is finished in this called number (being the number of UE) replacement initial address message; And send session invitation message to called subscriber (UE) by S-CSCF, call out to set up, and set up media bearer (IP carrying) between E-MSC and called user terminal (UE); Carry called number (being the number of UE) and calling number in the above-mentioned session invitation message;
708, S-CSCF transmits session invitation message by P-CSCF to called user terminal (UE) according to the IP address and the routed path of user's registration;
709～710, after called user terminal (UE) ring, UE sends the SIP ALERTING message by P-CSCF and S-CSCF to E-MSC;
711～712, after E-MSC received ALERTING message, message (ACM) was finished in the address that is converted into circuit domain, and it is sent to the PSTN at calling subscriber place by GMSC;
So far, E-MSC has set up the media bearer (CS carrying) between the PSTN at itself and calling subscriber place.
713～714, behind called subscriber's call establishment, UE sends SIP by P-CSCF and S-CSCF to E-MSC and connects message;
715～716, after E-MSC receives that SIP connects message, connect the media bearer between E-MSC itself and called user terminal (UE) and PSTN, and SIP connected the response message (ANM) that message conversion becomes circuit domain, send to the PSTN at calling subscriber place by GMSC.
Claims (13)
1. the user registering method of an IP Multimedia System network is characterized in that, when user equipment (UE) under the roaming state after the Proxy Call Session Control Function P-CSCF of local IP Multimedia System IMS network sends register requirement, this method comprises:
Described P-CSCF by the service call conversation control function S-CSCF that the query call conversation control function I-CSCF of local IMS network is transmitted to local IMS network, is transmitted to the E-MSC of enhancing mobile switching centre of local IMS network by described S-CSCF with it with described register requirement;
After receiving described register requirement, if there is not the user data of described UE among the E-MSC, then attaching position register HLR or the home subscriber server HSS to described UE home network sends position updating request; After receiving described position updating request, described HLR or HSS return to E-MSC with the user data of described UE; E-MSC preserves described user data, described UE is designated registered, and returns registration reply message to described S-CSCF, finishes follow-up register flow path by described S-CSCF.
2. the method for claim 1 is characterized in that,
After receiving described register requirement, if the user data of described UE is arranged among the E-MSC, then E-MSC is designated described UE registered, and returns registration reply message to described S-CSCF, finishes follow-up register flow path by described S-CSCF.
3. the method for claim 1 is characterized in that,
Described P-CSCF carries out described forwarding according to the described register requirement that carrier policy will receive by described I-CSCF;
Described carrier policy is: the register requirement that all UE send is all carried out described forwarding by the I-CSCF of described local IMS network, or only will not sign register requirement that the UE of IMS interconnection agreement the sends I-CSCF by described local IMS network and carry out described forwarding.
4. the method for claim 1 is characterized in that,
After described P-CSCF receives described register requirement, it is transmitted to before the described I-CSCF, this method also comprises:
Described P-CSCF uses the home domain name of carrying in the described register requirement to send I-CSCF address lookup message to domain name system DNS, with inquiry I-CSCF address;
After receiving described I-CSCF address lookup message, DNS extracts the home domain name in this message, and the address of described home domain name being translated into the I-CSCF of local IMS network according to carrier policy, and the I-CSCF address is returned to described P-CSCF;
The I-CSCF address that described P-CSCF uses DNS to return sends to described register requirement the I-CSCF of described local IMS network;
Described carrier policy is: all home domain name that will receive are all translated into the address of the I-CSCF in the described local IMS network or only will not signed the address that the home domain name of the network of IMS interconnection agreement is translated into the I-CSCF in the described local IMS network.
5. the method for claim 1 is characterized in that,
Before described UE sent described register requirement, this method also comprised:
Described UE sends to packet data network gateway P-GW and obtains P-CSCF full name message, and P-GW will return to described UE from P-CSCF full name that the DHCP Dynamic Host Configuration Protocol server gets access to;
Described UE is provided with home domain name according to described P-CSCF full name, and described home domain name is included in sends to described P-CSCF in the described register requirement;
Described P-CSCF sends to described register requirement according to the home domain name in the described login request message I-CSCF of described local IMS network.
6. the method for claim 1 is characterized in that,
After receiving described register requirement, if the user ID that does not have among the E-MSC to carry in the user data of described UE and the described register requirement is not international mobile subscriber identity IMSI, then E-MSC obtains one of in the following way the IMSI of described UE, and uses the IMSI that obtains to send described position updating request:
If the interim private user identity that the user ID of carrying in the described register requirement is to use IMSI to derive, then E-MSC oppositely derives to interim private user identity, obtains IMSI; Or
If the user ID of carrying in the described register requirement is the IMS private user identity, then E-MSC sends the refusal registration message to described UE, initiates registration again by the interim private user identity that this message indicates described UE to use IMSI or use to be derived by IMSI; And after receiving the register requirement that described UE resends, from this request, obtain IMSI or from this request, obtain interim private user identity and it is oppositely derived and obtain IMSI; Or
E-MSC sends initial session protocol sip subscribe or SIP query messages to obtain IMSI to described UE; Or
E-MSC uses the IMS private user identity that carries in the described register requirement to obtain IMSI to described HSS.
7. method as claimed in claim 1 or 2 is characterized in that,
Comprise initial filter standard or norm iFC in the described registration reply message;
Comprise among the described iFC: trigger described S-CSCF and initiate the registered events trigger criteria of third-party registration and/or trigger described S-CSCF and initiate the caller event trigger standard of third party call control and/or trigger described S-CSCF initiates called event trigger standard from third party call control to E-MSC to E-MSC to E-MSC.
8. method as claimed in claim 7 is characterized in that,
Comprise among the described iFC and trigger described S-CSCF initiates registered events trigger criteria from third-party registration to E-MSC;
After described S-CSCF receives described registration reply message, send the third-party registration request, carry user ID and the current access address of described UE of described UE in this request to E-MSC;
After receiving described third-party registration request, E-MSC preserves user ID and the current access address of described UE of described UE.
9. the business realizing system of an IP Multimedia System network, this system provides professional as visited network for the UE that is in roaming state, and links to each other with the HLR or the HSS of described UE home network; This system comprises: P-CSCF, I-CSCF, S-CSCF and E-MSC; Wherein:
Described P-CSCF is used for after the register requirement that receives the UE transmission that is in roaming state described register requirement being transmitted to described S-CSCF by described I-CSCF, by described S-CSCF it is transmitted to described E-MSC;
Described E-MSC is used for after receiving described register requirement, judges the local user data that whether stores described UE:
If described E-MSC does not store this locality the user data of described UE, then send position updating request to obtain the user data of described UE to described HLR or HSS; After receiving the user data that described HLR or HSS return, preserve described user data, described UE is designated registered, and return registration reply message, finish follow-up register flow path by described S-CSCF to described S-CSCF;
If described E-MSC this locality stores the user data of described UE, then described UE is designated registeredly, and return registration reply message to described S-CSCF, finish follow-up register flow path by described S-CSCF.
10. system as claimed in claim 9 is characterized in that,
Described P-CSCF carries out described forwarding according to the described register requirement that carrier policy will receive by described I-CSCF;
Described carrier policy is: the register requirement that all UE send is all carried out described forwarding by the I-CSCF of described local IMS network, or only will not sign register requirement that the UE of IMS interconnection agreement the sends I-CSCF by described local IMS network and carry out described forwarding.
11. system as claimed in claim 9 is characterized in that,
Also comprise DNS in the described system;
Described P-CSCF also uses the home domain name of carrying in the described register requirement to send I-CSCF address lookup message to described DNS, with inquiry I-CSCF address after receiving described register requirement, it is transmitted to before the described I-CSCF;
Described DNS is used for after receiving described I-CSCF address lookup message, extract the home domain name in this message, and the address of translating into described I-CSCF according to the described home domain name that carrier policy will receive, and the I-CSCF address returned to described P-CSCF;
The I-CSCF address that described P-CSCF uses described DNS to return sends to described I-CSCF with described register requirement;
Described carrier policy is: all home domain name that will receive are all translated into the address of the I-CSCF in the described system or only will not signed the address that the home domain name of the network of IMS interconnection agreement is translated into the I-CSCF in the described system.
12. system as claimed in claim 9 is characterized in that,
After receiving described register requirement, if the user ID that does not have among the described E-MSC to carry in the user data of described UE and the described register requirement is not IMSI, then described E-MSC one of also is used in the following way obtaining the IMSI of described UE, and uses the IMSI that obtains to send described position updating request:
If the interim private user identity that the user ID of carrying in the described register requirement is to use IMSI to derive, then described E-MSC oppositely derives to this interim private user identity, obtains IMSI; Or
If the user ID of carrying in the described register requirement is the IMS private user identity, then described E-MSC sends the refusal registration message to described UE, initiates registration again by the interim private user identity that this message indicates described UE to use IMSI or use to be derived by IMSI; And after receiving the register requirement that described UE resends, from this request, obtain IMSI or from this request, obtain interim private user identity and it is oppositely derived and obtain IMSI; Or
Described E-MSC sends initial session protocol sip subscribe or SIP query messages to obtain IMSI to described UE; Or
Described E-MSC uses the IMS private user identity that carries in the described register requirement to obtain IMSI to described HSS.
13. system as claimed in claim 9 is characterized in that,
Described S-CSCF also is used for after receiving described registration reply message, sends the third-party registration request according to the iFC that comprises in the described registration reply message to described E-MSC, carries user ID and the current access address of described UE of described UE in this request;
Described E-MSC also is used for after receiving described third-party registration request, preserves user ID and the current access address of described UE of described UE.
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| CN102780991A (en) * | 2011-05-13 | 2012-11-14 | 中兴通讯股份有限公司 | Roaming user data migration method and device |
| CN104735664A (en) * | 2015-03-12 | 2015-06-24 | 大唐移动通信设备有限公司 | Authentication method and device |
| CN106170128A (en) * | 2016-09-12 | 2016-11-30 | 中国联合网络通信集团有限公司 | Call processing method and device |
| CN108632936A (en) * | 2017-03-21 | 2018-10-09 | 中兴通讯股份有限公司 | A kind of method, UE and the PGW of anchoring core net |
| CN110087229A (en) * | 2018-01-26 | 2019-08-02 | 华为技术有限公司 | Wireless messages method for subscribing, relevant apparatus and system |
| CN110661753A (en) * | 2018-06-30 | 2020-01-07 | 华为技术有限公司 | Network registration method, device and system |
| CN110839230A (en) * | 2019-11-07 | 2020-02-25 | 中国电子科技集团公司第二十八研究所 | Converged communication attribution transferring and registering method suitable for narrow-band network |
| CN111480355A (en) * | 2017-12-21 | 2020-07-31 | 瑞典爱立信有限公司 | Method and apparatus for registering IMS subscribers using temporary identifiers |
| EP4087337A4 (en) * | 2020-10-22 | 2023-08-02 | Honor Device Co., Ltd. | METHOD AND DEVICE FOR PROCESSING NETWORK REGISTRATION ANOMALIES, STORAGE MEDIA AND CHIP |
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| US8121597B2 (en) * | 2002-03-27 | 2012-02-21 | Nokia Siemens Networks Oy | Method of registering and deregistering a user |
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| CN108632936B (en) * | 2017-03-21 | 2022-11-22 | 中兴通讯股份有限公司 | Method for anchoring core network, UE and PGW |
| CN108632936A (en) * | 2017-03-21 | 2018-10-09 | 中兴通讯股份有限公司 | A kind of method, UE and the PGW of anchoring core net |
| CN111480355B (en) * | 2017-12-21 | 2024-04-12 | 瑞典爱立信有限公司 | Method and apparatus for registering an IMS subscriber using a temporary identifier |
| CN111480355A (en) * | 2017-12-21 | 2020-07-31 | 瑞典爱立信有限公司 | Method and apparatus for registering IMS subscribers using temporary identifiers |
| CN110087229A (en) * | 2018-01-26 | 2019-08-02 | 华为技术有限公司 | Wireless messages method for subscribing, relevant apparatus and system |
| CN110661753A (en) * | 2018-06-30 | 2020-01-07 | 华为技术有限公司 | Network registration method, device and system |
| CN110839230B (en) * | 2019-11-07 | 2022-03-15 | 中国电子科技集团公司第二十八研究所 | Converged communication attribution transferring and registering method suitable for narrow-band network |
| CN110839230A (en) * | 2019-11-07 | 2020-02-25 | 中国电子科技集团公司第二十八研究所 | Converged communication attribution transferring and registering method suitable for narrow-band network |
| EP4087337A4 (en) * | 2020-10-22 | 2023-08-02 | Honor Device Co., Ltd. | METHOD AND DEVICE FOR PROCESSING NETWORK REGISTRATION ANOMALIES, STORAGE MEDIA AND CHIP |
| EP4496396A3 (en) * | 2020-10-22 | 2025-03-26 | Honor Device Co., Ltd. | Method and device for processing network registration anomaly, storage medium and chip |
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