CN100550804C - A kind of network attached method and network attachment system - Google Patents

A kind of network attached method and network attachment system Download PDF

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Publication number
CN100550804C
CN100550804C CNB2006100017489A CN200610001748A CN100550804C CN 100550804 C CN100550804 C CN 100550804C CN B2006100017489 A CNB2006100017489 A CN B2006100017489A CN 200610001748 A CN200610001748 A CN 200610001748A CN 100550804 C CN100550804 C CN 100550804C
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multimedia system
terminal
information
address
address information
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CN101009609A (en
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刘岚
胡伟华
周四红
王洁
张文林
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CNB2006100017489A priority Critical patent/CN100550804C/en
Priority to PCT/CN2007/000287 priority patent/WO2007085196A1/en
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Abstract

The present invention relates to a kind of network attached method and network attachment system.This method is provided with the address information that connects IP Multimedia System in the user signing contract information of home subscriber server, when terminal is carried out network attachment, may further comprise the steps: A, terminal initiate to adhere to request to adhering to processing net element; B, to adhere to processing net element be that described terminal is carried out attach operation, and obtain the address information that connects IP Multimedia System from home subscriber server; C, to adhere to processing net element be the terminal distribution temporary mark, and IP address is issued to terminal with the address information that is connected IP Multimedia System; D, terminal are carried out the IP Multimedia System registration according to the address information of described connection IP Multimedia System.This method is carried out the IMS registration when terminal is carried out network attachment, terminal can be initiated caller immediately, also can receive the called calling that comes from the IMS territory.

Description

A kind of network attached method and network attachment system
Technical field
The present invention relates to the communications field, relate in particular to a kind of network attached method and network attachment system, can be applied to 3GPP evolvement network and other communication networks.
Background technology
In order to guarantee the competitiveness of third generation partner program (3GPP The 3rdGeneration Partnership Project) system in following 10 years down to the time more of a specified duration, the work of an access technology evolution is just carried out at the 3GPP organization internal.Particularly, in the 3GPP system, use group technology to need further to strengthen in order to strengthen the 3GPP system handles ability of the IP data service of growth fast.Most important several sections comprises in this class technology evolution: reduce time delay, Gao Su user data rate more, the reduction of the power system capacity of enhancing and coverage and operator's integral body cost.And the network configuration of evolution also is an important index for the backwards compatibility of existing network.
Several principles related to the present invention that the network architecture of evolution need satisfy are as follows:
At the initial phase of accessing terminal to network, basic IP connects and need set up in the network of evolution;
The network architecture of evolution must minimize the time delay of user data;
The definition of each functional module should be avoided the overlapping or repetition of function in the evolution network framework, to avoid unnecessary signaling interaction and time delay.
In the existing 3GPP system configuration, the structure of user data plane as shown in Figure 1.As can be seen from Figure 1, the transmission of user data need be passed through Gateway GPRS Support Node (GGSN Gateway GPRSSupport Node), Serving GPRS Support Node (SGSN Serve GPRS Support Node), UMTS Terrestrial radio access network (UTRAN UMTS Terrestrial Radio Access Network) ability incoming terminal, the time delay that is produced is considerably beyond the desired time delay of network of evolution like this, so be one of key point of network evolution for the simplification of original 3GPP network configuration.
In addition, in original 3GPP system, the activation of the attaching process of GPRS and block data protocol context (PDPPacket Data Protocol context) is two separating process.After start, terminal can be carried out a GPRS (GPRS General Packet Radio Service) attaching process, wherein mainly is an authentication process.Before activating PDP Context, there is not IP to connect and adhere to the back terminal.Have only when selected Network Access Point and by SGSN when GGSN initiates the PDP context activation request, terminal just can be provided an IP address and corresponding configuration parameters.It is elongated to cause the user to initiate professional time delay like this, and the requirement of this process and evolvement network obviously is not inconsistent, so the network configuration of evolution needs new register flow path to reach this needs.
As shown in Figure 2, it is current wireless evolution network structure schematic diagram, the core net of wireless evolution network mainly comprises Mobility Management Entity (MME Mobility Management Entity)/user data face entity (UPE User Plane Entity) as seen from the figure, three logic function modules of anchor point between connecting system (Inter AS Anchor InterAccess Systems Anchor), MME wherein is the mobile management module, be responsible for the mobile management of chain of command, comprise the management of user's context and mobile status, distributing user temporary identity sign, safety function etc., it is corresponding to the control plane part of current UMTS internal system SGSN; UPE is a user entity, is responsible for initiating paging for downlink data under the idle condition, and IP bearing parameter and the interior routing iinformation of network etc. are preserved in management, and it is for the datum plane part of current UMTS internal system SGSN and GGSN; Inter AS Anchor then serves as the user's face anchor point between different access systems.The function of each interface among the figure and whether exist is not still finally determined.MME, UPE, three functional modules of Inter ASAnchor can be combined in the entity among Fig. 2.
The technical scheme of prior art one:
At present the terminal that defines among the 3GPP carry out GPRS adhere to the flow process of PDP context activation as shown in Figure 3, may further comprise the steps:
S011, terminal (UE) are initiated GPRS by UTRAN to SGSN and are adhered to request (AttachRequest).
S012, safety function (Security Functions) comprise authentication, authentication etc.
S013, SGSN initiate position updating request to HSS, and obtain user signing contract information (Location Update with HSS and attain subcription data) from HSS.
S014, SGSN send GPRS to UE earlier and adhere to request acceptance (Attach Accept).
S015, finish GPRS and adhere to (Attach Complete).
S016, UE initiate to activate PDP Context request (Activate PDP ContextRequest) to SGSN.
S017, SGSN initiate PDP Context to GGSN and set up request (Create PDP ContextRequest).GGSN or carry out authentication and address assignment by the Radius server, perhaps adopt Radius to carry out authentication and DHCP and carry out one of these two kinds of methods of address assignment and distribute an IP address to UE, the PDP Context of GGSN response is afterwards set up request (Create PDP Context Response).
Radio bearer between S018, UE and UTRAN is set up (Radio Bearer Setup).
S019, SGSN send PDP Context update notification (Update PDP Context Request), and GGSN is owing to wireless other reduction of QoS level, and GGSN accepts also to confirm (Update PDP ContextResponse).This signaling has only the QoS level special talent triggering that can not satisfy the requirement of PDP Context the inside as wireless QoS.
S0110, PDP context activation are finished (Activate PDP Context Accept).
In addition, network also can be initiated the PDP context activation request, as shown in Figure 4, may further comprise the steps:
S021, GGSN receive a PDP PDU.
The PDP activation of network requests is initiated in S022, GGSN decision, and sends GPRS routing iinformation (Send Routeing Info for GPRS) to obtain the relevant SGSN information of pdp address to HSS.HSS sends GPRS routing iinformation confirmation (Send Routeing Info for GPRS Ack) to GGSN.
S023, GGSN send PDU notice request information (PDU Notification Request) to corresponding SGSN.SGSN by PDU Notification Validation information (PDU Notification Response) to GGSN to represent that it will be to the relevant PDP Context of UE requesting activation.
S024, SGSN request UE activates PDP Context (Request PDP Context Activation).
S025, UE enter pdp context activation (PDP Context Activation procedure).
In the above-mentioned prior art one GPRS adhere to PDP context activation be two independently engineerings, like this, when a business was come, if there is not already present PDP Context, UE must carry out the PDP context activation request and finish session to obtain an IP address foundation carrying.Like this, the professional time delay of setting up will substantially exceed the desired maximum delay of evolvement network, and whole flow process has related to the mutual of a lot of signalings, has wasted the especially resource of air interface of a lot of Internet resources.
The technical scheme of prior art two:
User or UE must be permanent online in the network architecture of evolution, that is to say the IP carrying that just need set up an acquiescence when the user carries out network attachment.In 3GPP TR 23.882 v0.9.0:3GPP System Architecture Evolution:Report on Technical Options and Conclusions (Release 7), a kind of flow process of adhering in non-roaming scene lower network has been described, as shown in Figure 5: may further comprise the steps:
S031, UE have found that the SAE/LTE connecting system initiates network selecting and access (NetworkDiscovery and Access System Selection) subsequently.If exist network to share, then a network of Gong Xianging is with selected.
S032, UE initiate to adhere to request (Attach Request) to MME/UPE, and the information of registration (for example: temporary mark) before comprising.If UE does not have former log-on message, then comprise its permanent identification.
Consider that Attach Request message will comprise selected network or mME/UPE under the shared situation of network.
Consider the redundant situation of MME/UPE, the RAN of evolution can select a MME/UPE.
Adhere to request and can comprise the information (for example: IP address or APN that the user selects) of giving tacit consent to the IP access bearer.
If the former log-on message of S033 is reported by UE, then MME/UPE can be by the information of log-on message (Send old registration information) before sending to former MME/UPE retrieval user.
S034, former MME/UPE send user profile (Send user information) and (for example: user's permanent identification) give target MME/UPE.
S035, user or terminal are carried out authentication (Authentication) at target MME/UPE.
S036, target MME/UPE are to serving MME/UPE (RegisterMME) of HSS registration becoming UE.
S037, user or the terminal information on former MME/UPE is deleted or be noted as and do not have (Delete UE registration information).
S038, HSS confirm the registration (Confirm Registration) of target MME/UPE.Authorize the CAMEL-Subscription-Information of acquiescence IP access bearer to be transferred into target MME/UPE.Strategy and charging control information that default bearing is relevant also are transferred into target MME/UPE.
S039, a selection Inter AS Anchor (Selection of Intersystem Mobility AnchorGW).The IP address configuration is by user preferences or subscription data, and perhaps the strategy of HPLMN or VPLMN determines.
S0310, Inter AS Anchor carry out IP layer configuration (User PlaneRoute Configuration) according to the IP address of terminal of decision.User plane is set up and the strategy and the charging rules of acquiescence are employed.The foundation of user plane is to be initiated not do to limit by UE initiation or ME/UPE.
S0311, MME/UPE provide the QoS of default bearing (for example: the upper limit of data rate) to dispose (Configure IPBearer QoS) to the RAN of evolution.This QoS configuration (for example: the needs that send up or downlink data) can need to increase trigger mechanism.
S0312, MME/UPE send and accept adhering to message (Attach Accept) and being UE distribution temporary mark of UE, and the IP address of UE also is sent to UE.Under roaming scence, the roaming restriction can be examined, if violate then adhere to and will be rejected.
S0313, UE confirm to adhere to successfully (Attach Confirm).
In the above-mentioned prior art two, have only packet domain in the network of evolution and do not have circuit domain, at this moment, voice conversation service also need be finished by packet domain, all voice calls should be finished by IMS, and terminal is when carrying out network attachment, and such scheme does not carry out the IMS registration, and then the calling of being undertaken by IMS can't be finished.
IMS is a subsystem that is superimposed upon in the WCDMA network that increases in the 3GPP R5 stage on the existing packet domain, adopt the bearer path of packet domain for its upper strata control signaling and media delivery, and introduce Session Initiation Protocol as professional control protocol, utilize simple, the easy expansion of SIP, media combination characteristics easily, by business control is separated with carrying control, provide abundant multimedia service.Major function entity among the IMS comprises control user registration, the conversation control entity CSCF of functions such as session control is (comprising proxy call conversation control function entity (P-CSCF), inquiry call conversation control function entity (I-CSCF) and service call session control function entity (C-CSCF), the application server AS of miscellaneous service logic control function is provided, the home subscriber server HSS and being used to of centralized management user contracting data realizes the MGCF/IM-MGW (MGCF) with the circuit switching net interconnecting.The user is by current location agent node P-CSCF access IMS, and session and professional triggering control reach with the business control of AS and then finished by the home domain service node S-CSCF of its registered place alternately.
The IMS framework of 3GPP standard definition has solved the roam charge that the required solution of multimedia service is provided under the IP carrying comprehensively, QoS (service quality), but the problems of operation that safety guarantee etc. are crucial, its framework and thinking have obtained industry and have generally acknowledged, 3GPP2, TISPAN has all carried out the definition of corresponding IP multi-media network framework and business system with the 3GPP model as basis and reference, 3GPP has also begun to insert and UMTS intercommunication such as I-WLAN (Interworking of WLAN at WLAN (WLAN (wireless local area network)), the WLAN intercommunication), fixed broadband inserts IMS such as FBI (Fixed Broadband access to IMS, fixed broadband inserts IMS) and towards the all-IP net such as the AIPN subject studies such as (All-IP Network complete IP networks) of multiple access technology, the user can signatory insert IMS by single multimode terminal or polytype different terminals via the Access Network of different access technologies according to it, with what obtain to unify, the multimedia service that comprises VoIP (Voiceover IP, IP-based voice) business etc.
Summary of the invention
The invention provides a kind of network attached method and network attachment system, be used for solving existing network system, when terminal is adhered to, do not carry out IMS registration, the problem that the speech business that causes being undertaken by IMS can't in time be finished.。
The inventive method comprises:
A kind of network attached method comprises:
The address information of IP Multimedia System is set in the user signing contract information of home subscriber server, when terminal is carried out network attachment, may further comprise the steps:
A, terminal initiate to adhere to request to adhering to processing net element;
B, to adhere to processing net element be that described terminal is carried out attach operation, and obtain the address information of IP Multimedia System from home subscriber server;
C, to adhere to processing net element be the terminal distribution temporary mark, and the address information and the IMS sign-on ID of IP address, IP Multimedia System is issued to terminal;
D, terminal are carried out the IP Multimedia System registration according to the address information of described IP Multimedia System.
The address information of described IP Multimedia System is the P-CSCF address information of IP Multimedia System or the access-in point information of connection IP Multimedia System.
The step of the IP address of IP Multimedia System is inquired about and obtained to described method if the P-CSCF address information of described connection IP Multimedia System, then also comprises terminal for connecting the access-in point information of IP Multimedia System to name server.
Described method also is included in the user signing contract information of user-subscribed database IP Multimedia System sign-on ID information is set;
Among the described step B, home subscriber server sends to described sign-on ID information and adheres to processing net element;
Among the described step C, adhere to processing net element described IP Multimedia System sign-on ID information is sent to terminal.
Described method also comprises step:
E, terminal are adhered to successfully affirmation to adhering to the processing net element transmission.
Described step e can be initiated before step D, afterwards or simultaneously.
The described processing net element of adhering to is Mobility Management Entity and/or user data face entity.
System of the present invention comprises:
A kind of network attachment system, terminal is connected to core net by Access Network, promising terminal is set in the described core net home subscriber server that adheres to processing net element and storing user subscription data that adheres to processing is provided;
Be provided with in the described home subscriber server:
The address information memory cell of IP Multimedia System is used for the address information of storing IP IP multimedia subsystem, IMS;
Described terminal is provided with the IP Multimedia System registering unit, is used to initiate the IP Multimedia System registration;
When terminal is carried out network attachment, adhere to processing net element and obtain the address information of IP Multimedia System to home subscriber server, and address information, IP address and the IMS sign-on ID of described IP Multimedia System sent to terminal, terminal is carried out the IP Multimedia System registration according to the address information of described IP Multimedia System.
Also be provided with in the described home subscriber server:
IP Multimedia System sign-on ID information memory cell is used for storing IP multimedia subsystem register identification information;
Described terminal also is provided with:
IP Multimedia System sign-on ID information identificating unit is used to discern described IP Multimedia System sign-on ID information.
Described terminal also is provided with:
IP Multimedia System IP address acquisition unit is used for according to the access-in point information that connects IP Multimedia System, the IP address that obtains IP Multimedia System to name server.
Described terminal also is provided with:
Control unit is initiated in the IP Multimedia System registration, is used to control the initiation opportunity that described terminal is carried out the IP Multimedia System registration.
The described processing net element of adhering to is Mobility Management Entity and/or user data face entity.
The present invention carries out the IMS registration when terminal is carried out network attachment, like this, for the communication networks such as evolvement network that do not have circuit domain, all-calls need be finished in packet domain, the terminal of carrying out when adhering to after IMS registers can be initiated caller (SIP calling) immediately, also can receive the called calling that comes from the IMS territory.
Description of drawings
Fig. 1 is in the prior art in the 3GPP system configuration, the structural representation of user data plane;
Fig. 2 is radio gradual network structure figure in the prior art;
Fig. 3 adheres to and the PDP context activation flow process for the GPRS of terminal in the 3GPP system in the prior art;
Fig. 4 is a network activation PDP Context process in the prior art;
Fig. 5 is the network attachment flow process among the TR23.882 in the prior art;
Fig. 6 is the schematic flow sheet of the specific embodiment of the invention;
Fig. 7 is the system configuration schematic diagram of the specific embodiment of the invention.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described.
The present invention can be applied to 3GPP evolvement network and other communication networks.Be that example describes with the 3GPP evolvement network below.
At first, should preserve the address information of an IMS in the user signing contract information in HSS, and have a sign position to identify to carry out the IMS registration when whether allowing UE carry out network attachment, be referred to as the IMS sign-on ID.
When UE initiates to adhere to request, handle the processing net element of adhering to that UE adheres to request then, and, in network attachment, carry out the IMS registration by UE from address information and this sign position information that HSS obtains this this IMS.
In the such scheme, the address information of this IMS can be the IP address of the P-CSCF of this IMS, also can be special APN (APN) information that connects this IMS.
This adheres to processing net element, can MME and/or UPE, the network side network element of other identity functions is perhaps arranged, and be that example describes with MME/UPE in the embodiment of the invention.
As shown in Figure 6, this UE network attachment process may further comprise the steps:
S1UE has found that the SAE/LTE connecting system initiates network selecting and access subsequently.
After UE finds the SAE/LTE connecting system, can initiate network selecting and access procedure, if exist network to share, then a network of Gong Xianging is with selected.
S2, UE initiate to adhere to request to target MME/UPE, comprise the information of the registration of UE.
UE initiates to adhere to request to target MME/UPE, and in request, carry relevant UE and represent information, if the information of registration before having, (for example: temporary mark), then in request, carry the information of registering before this.If UE does not have former log-on message, then comprise its permanent identification.
Consider that Attach Request message will comprise selected network or MME/UPE under the shared situation of network.
Consider the redundant situation of MME/UPE, the RAN of evolution can select a MME/UPE.
The information (for example: IP address or APN that the user selects) that in request, also can comprise acquiescence IP access bearer.
If the former log-on message of S3 is reported by UE, then target MME/UPE can be by the information of log-on message before sending to former MME/UE retrieval user.
S4, former MME/UPE to target MME/UPE (for example: user's permanent identification) send user profile.
Step S3 and S4 are under the prerequisite of the information of registration before UE has, if UE does not have the information of registration in the past, then can omit processing.
S5, UE carry out authentication at target MME/UPE.
S6, target MME/UPE are to serving MME/UPE of HSS registration becoming UE.
After authentication was passed through, target MME/UPE was to serving MME/UPE of HSS registration becoming UE, and the mobile management of later UE is just finished by target MME/UPE.
S7, the UE information on former MME/UPE is deleted or be noted as and do not exist.
When target MME/UPE registration becomes serving MME/UPE of UE, former MME/UPE go up stored user information with regard to deleted or note for not existed.
S8, HSS confirm the registration of target MME/UPE, and HSS is handed down to MME/UPE with address information and the IMS sign-on ID of this IMS.
Confirm the registration operation of MME/UPE between HSS and the target MME/UPE, HSS authorizes the CAMEL-Subscription-Information of acquiescence IP access bearer to be transferred into MME/UPE.Strategy and charging control information that default bearing is relevant also are transferred into MME/UPE.The address information of IMS, and the IMS sign-on ID also is handed down to MME/UPE in the lump.
S9, target MME/UPE select an Inter AS Anchor.
Also be included as UE distributing IP address in this step, the IP address configuration is by user preferences or subscription data, and perhaps the strategy of HPLMN or VPLMN determines.
S10, Inter AS Anchor carry out the configuration of IP layer according to the UEIP address of decision.User plane is set up and the strategy and the charging rules of acquiescence are employed.
The foundation of this user plane can be initiated by UE, also can be initiated by MME/UPE.
S11, MME/UPE provide the QoS of default bearing (for example: the upper limit of data rate) to dispose to the RAN of evolution.This QoS configuration can realize by increasing trigger mechanism, for example sends needing etc. of up or downlink data.
S12, MME/UPE send and accept adhering to message and being UE distribution temporary mark of UE, and the UEIP address also is sent to UE.Under roaming scence, the roaming restriction can be examined, if violate then adhere to and will be rejected.If judging the IMS sign-on ID is that UE initiates the IMS registration when adhering to, then MME/UPE also is issued to UE with APN and the IMS sign-on ID that the IMS acquiescence connects.
S13, UE receive the IP address that is disposed, the address information of IMS, and behind the IMS sign-on ID, carry out the IMS registration immediately.
Receive the address information and IMS sign-on ID of the IP address that disposed, IMS as UE after,, can initiate the IMS registration according to described IMS address information.
The acquiescence of obtaining in this step connects the address information of IMS if the IP address information of the P-CSCF of IMS, then UE can directly use the IP address of the P-CSCF of this IMS to carry out the IMS registration, if the address information of described connection IP Multimedia System, comprises also then that UE is to the name server inquiry and obtain the step of IP address of the P-CSCF of this IMS for connecting the access-in point information of IP Multimedia System.
UE is to the name server inquiry and obtain the process of the IP address of IP Multimedia System, can receive APN information that UE reports IP address with reference to SGSN in the existing UMTS system to DNS inquiry GGSN, DNS returns the IP address of GGSN according to APN information to SGSN, and SGSN sends PDP Context to GGSN and sets up information and the APN information that UE reports is issued GGSN in the lump then.
UE inquires about and obtains the process of the IP address of IP Multimedia System to name server in this step, can receive APN information that UE reports IP address with reference to SGSN in the existing UMTS system to DNS inquiry GGSN, DNS returns the IP address of GGSN according to APN information to SGSN, and SGSN sends PDP Context to GGSN and sets up information and the APN information that UE reports is issued GGSN in the lump then.
S14, UE confirm to adhere to successfully.
The operation of above-mentioned steps S13, S14 can be carried out in proper order, as first execution in step S13 execution in step S14 again, or first execution in step S14 execution in step S13 again, can there be sequencing and parallel carrying out yet.
As shown in Figure 7, be the structural representation of a kind of 3GPP gradual network system of the present invention, in this 3GPP gradual network system, UE100 is connected to core net by the evolution Access Network,
Be provided with in the described core net:
The HSS400 of MME/UPE200, Inter AS Anchor300 and storing user subscription data.
MME wherein is the mobile management module, is responsible for the mobile management of chain of command, comprises the management of user's context and mobile status, distributing user temporary identity sign, safety function etc., and it is corresponding to the control plane part of current UMTS internal system SGSN; UPE is a user entity, is responsible for initiating paging for downlink data under the idle condition, and IP bearing parameter and the interior routing iinformation of network etc. are preserved in management, and it is for the datum plane part of current UMTS internal system SGSN and GGSN; Inter AS Anchor300 then serves as the user's face anchor point between different access systems.
The present invention is provided with at HSS400:
The address information memory cell 401 of IMS, be used to store the address information of IMS, when UE carried out network attachment, HSS400 sent to UE100 with the address information of the IMS of storage in the address information memory cell 401 of described IMS through MME/UPE200, was used for UE100 and carried out IMS registration use;
IMS sign-on ID information memory cell 402, be used to store IMS sign-on ID information, when UE100 carries out network attachment, HSS400 sends to UE100 with the IMS sign-on ID information of storage in the described IMS sign-on ID information memory cell 402 through MME/UPE200, is used for UE100 and carries out IMS registration use.
Described UE100 is provided with:
Adhere to request and initiate unit 101, be used for initiating to adhere to request to target MME/UPE;
IMS sign-on ID information identificating unit 102 is used to discern described IMS sign-on ID information, and according to recognition result, whether decision initiates the IMS register requirement;
IMS registering unit 103 is used to initiate the IMS registration;
Control unit 104 is initiated in the IP Multimedia System registration, is used to control the initiation opportunity that UE100 carries out the IP Multimedia System registration.
IMS IP address acquisition unit 105 is used for according to the AP information that connects IMS, obtains the IP address information of IMS to name server (DNS), such as the IP address of P-CSCF.
The present invention UE in evolvement network carries out carrying out in the process of network attachment the IMS registration, like this, because evolvement network does not have circuit domain, all-calls need be finished in packet domain, the UE that carries out when adhering to after IMS registers can initiate caller (SIP calling) immediately, also can receive the called calling that comes from the IMS territory.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (12)

1, a kind of network attached method is characterized in that:
The address information of IP Multimedia System is set in the user signing contract information of home subscriber server, when terminal is carried out network attachment, may further comprise the steps:
A, terminal initiate to adhere to request to adhering to processing net element;
B, to adhere to processing net element be that described terminal is carried out attach operation, and obtain the address information of IP Multimedia System from home subscriber server;
C, to adhere to processing net element be the terminal distribution temporary mark, and the address information and the IMS sign-on ID of IP address, IP Multimedia System is issued to terminal;
D, terminal are carried out the IP Multimedia System registration according to the address information of described IP Multimedia System.
2, the method for claim 1 is characterized in that, the address information of described IP Multimedia System is the P-CSCF address information of IP Multimedia System or the access-in point information of connection IP Multimedia System.
3, method as claimed in claim 2, it is characterized in that, if the P-CSCF address information of described connection IP Multimedia System, then also comprises terminal for connecting the access-in point information of IP Multimedia System and inquires about and obtain the step of the IP address of IP Multimedia System to name server.
4, the method for claim 1 is characterized in that, also is included in the user signing contract information of user-subscribed database IP Multimedia System sign-on ID information is set;
Among the described step B, home subscriber server sends to described sign-on ID information and adheres to processing net element;
Among the described step C, adhere to processing net element described IP Multimedia System sign-on ID information is sent to terminal.
5, as claim 1,2,3 or 4 described methods, it is characterized in that, also comprise step:
E, terminal are adhered to successfully affirmation to adhering to the processing net element transmission.
6, method as claimed in claim 5 is characterized in that, described step e can be initiated before step D, afterwards or simultaneously.
7, the method for claim 1 is characterized in that, the described processing net element of adhering to is Mobility Management Entity and/or user data face entity.
8, a kind of network attachment system, terminal is connected to core net by Access Network, promising terminal is set in the described core net home subscriber server that adheres to processing net element and storing user subscription data that adheres to processing is provided; It is characterized in that,
Be provided with in the described home subscriber server:
The address information memory cell of IP Multimedia System is used for the address information of storing IP IP multimedia subsystem, IMS;
Described terminal is provided with the IP Multimedia System registering unit, is used to initiate the IP Multimedia System registration;
When terminal is carried out network attachment, adhere to processing net element and obtain the address information of IP Multimedia System to home subscriber server, and address information, IP address and the IMS sign-on ID of described IP Multimedia System sent to terminal, terminal is carried out the IP Multimedia System registration according to the address information of described IP Multimedia System.
9, system as claimed in claim 8 is characterized in that,
Also be provided with in the described home subscriber server:
IP Multimedia System sign-on ID information memory cell is used for storing IP multimedia subsystem register identification information;
Described terminal also is provided with:
IP Multimedia System sign-on ID information identificating unit is used to discern described IP Multimedia System sign-on ID information.
10, system as claimed in claim 7 is characterized in that, described terminal also is provided with:
IP Multimedia System IP address acquisition unit is used for according to the access-in point information that connects IP Multimedia System, the IP address that obtains IP Multimedia System to name server.
11, system as claimed in claim 7 is characterized in that, described terminal also is provided with:
Control unit is initiated in the IP Multimedia System registration, is used to control the initiation opportunity that described terminal is carried out the IP Multimedia System registration.
12, system as claimed in claim 6 is characterized in that, the described processing net element of adhering to is Mobility Management Entity and/or user data face entity.
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