CN100493227C

CN100493227C - Method for treating user of updating IP address at network side

Info

Publication number: CN100493227C
Application number: CNB2004100886926A
Authority: CN
Inventors: 朱奋勤; 黄迎新
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-11-15
Filing date: 2004-11-15
Publication date: 2009-05-27
Anticipated expiration: 2024-11-15
Also published as: CN1777322A

Abstract

The invention relates to a network side for processing user of renewing IP address. HSS actuates renewing operation after receiving information corresponding to renewing IMPI AND IP in HSS from GGSN and then starts a timer to the IMPI; before the timer is overtime, if the HSS receives the authority identification request sent by S-CSCF before for the IP address renewing user, the network side directly accurate registering process but not canceling process; if the authority identification is not received, the S-CSCF actuates canceling process; after the timer is overtime the HSS has not received the authority identifying request, the network actuates canceling process. Advantages: reduced resource consumption and simplified relative node process.

Description

A kind of network side is to upgrading the processing method of IP address user

Technical field

The present invention relates to the mobile communication technology field, be meant that especially a kind of network side was to upgrading the processing method of IP address user when 2G user upgraded behind the IP address connecting multimedia subsystem (IMS).

Background technology

Development along with broadband network, mobile communication not only is confined to traditional Speech Communication, by with present that business (presence), message, webpage (WEB) are browsed, the combining of data service such as locating information, propelling movement business (PUSH) and file-sharing, mobile communication can realize the business of multiple medium types such as audio frequency, video, picture and text, to satisfy user's multiple demand.

3rd Generation Partnership Project (3GPP) and 3rd Generation Partnership Project 2 (3GPP2) etc. are organized and have all successively been released IP-based IP multimedia subsystem, IMS (IMS) framework, its objective is and in the mobile network, use a kind of standardized open architecture to realize diversified multimedia application, so that more selection and abundanter impression to be provided to the user.

The IMS framework is superimposed upon on the packet field network (PS-Domain), and the entity that this framework is relevant with authentication comprises CSCF (CSCF) entity and home signature user server (HSS) functional entity.

CSCF can be divided into serving CSCF (S-CSCF), proxy CSCF (P-CSCF) and three logic entities of inquiry CSCF (I-CSCF) again, and these three logic entities may be different physical equipments, also may be functional modules different in the same physical equipment.S-CSCF is the professional control centre of IMS, is used to carry out session control, peace preservation association's speech phase, and managing user information produces charge information etc.; P-CSCF is the access point of terminal user access to IMS, is used to finish user's registration, service quality (QoS) control and safety management etc.; I-CSCF is responsible for the intercommunication between the IMS territory, and network topology structure and configuration information are externally hidden in the distribution of management S-CSCF, and produce metering data etc.HSS is very important customer data base, is used to support the processing of each network entity to calling and session.

IMS only considers to use at the 3G (Third Generation) Moblie network when initial release (R5 release protocol).Because the business on the IMS is very abundant, so operator uses IMS on the network of 2G demand occurred.But on the network of 2G what can't support based on the safety related functions of the IMS of 3G network, five-tuple authentication/network authentication etc. for example, for solving the subscription authentication problem that 2G user uses the IMS network faces, 3GPP has proposed a kind of transition right-identification scheme, and this scheme provides certain safety function for the IMS business on the 2G.When the user supports the 3G authentication scheme, adopt complete authentication scheme butt joint access customer to carry out authentication again based on 3G.

The specific implementation process of the transition right-identification scheme of existing IMS based on 2G is as follows:

The user inserts the packet domain of 3GPP, and by behind the access authentication of this packet field network, the packet network gateway node (GGSN) of packet network distributes an IP address to the user, and this IP address also is the unique ip address that the user uses when using the IMS service of subsystem.GGSN is notified to HSS with this IP address and user's telephone number (MSIDSN) by intermediate entities, HSS finds the identify label IMPI of user in the IMS system by user's MSISDN, and information such as this user's IMPI, IP address are bound preservation.When the user will use IMS, at first send IMS login request message (register), this message is transmitted the back through intermediate entities and is arrived S-CSCF, S-CSCF obtains this user's the permanent user identity sign (IMPI) and the binding relationship of IP address from HSS, S-CSCF checks whether be complementary with this user's who obtains from HSS the IMPI and the binding of IP address from user's the IMPI and the IP address of use thereof then, if, think that then it is a validated user, controlling this user inserts, allow this user to use the IMS business, otherwise think that it is a disabled user, refuse this 2G user and insert.

When user's initiation packet data protocol contexts (PDP Context) activation, after obtaining new IP address, network side carries out IMS immediately to this renewal IP address user and nullifies processing, when this user inserts the IMS network once more, network side carries out the IMS location registration process to it again, and detailed process is as follows:

GGSN notice HSS upgrades user's IMPI and the corresponding relation between the IP address, after HSS confirms that the pairing IP of this IMPI address of self preserving is different with the IP address in the update notification, upgrade this corresponding relation, promptly preserve the corresponding relation of the IP address in this IMPI and the update notification; Initiate the log off procedure of network side then immediately, even this user's that the S-CSCF deletion himself is preserved the IMPI and the binding relationship of IP address.Implementation procedure is: HSS initiates notice of cancellation according to the S-CSCF sign of this IMPI correspondence of self preserving to it; S-CSCF sends notice of cancellation to corresponding user and P-CSCF respectively according to the notice that receives, obtain the response respectively of user and P-CSCF after, return to HSS again and nullify response.

When the user need insert IMS again, it is at first used this new IP address and sends register requirement, this request is transmitted the back through intermediate entities and is arrived S-CSCF, carry out authentication operations by S-CSCF, be that S-CSCF obtains this user's the IMPI and the binding relationship of IP address from HSS, S-CSCF checks whether be complementary with this user's who obtains from HSS the IMPI and the binding relationship of IP address from user's the IMPI and the IP address of use thereof then, if, think that then it is a validated user, controlling this user inserts, allow this user to use the IMS business, otherwise think that it is a disabled user, refuse this 2G user and insert.

As can be seen, after arbitrary user upgraded the IP address, network side will be carried out once to nullify and handle, and as this user once more during access network, network side also needs carry out location registration process one time to this user.

In above-mentioned log off procedure, after HSS receives update notification from GGSN, why initiate the log off procedure of network side at once, its purpose is exactly in order to prevent illegal mandate the such as professional swindle, the situation of Internet resources to occur usurping.For example, after certain user A obtains new IP address, it may continue to fill in original old IP address access network, if and S-CSCF does not upgrade in time, and when this original old IP address has been assigned to user B, then, will cause this user A, and the expense that should bear of user A can be by note on the account of user B subsequently by authentication if untimelyly be updated in IMPI in the S-CSCF with the binding relationship of IP address.

There is defective in the initiation of above-mentioned log off procedure: because do not consider for GGSN, it can't discharge the IP address that disconnects connection that self preserves immediately, but before the idle timer expiry of this IP address, preserve this IP address always, and, before idle timer expiry, can not give other user yet, thereby can not impact other user with this IP address assignment.That is to say, before HSS sends out the address failure request, do not exist because other user obtains old IP address, and S-CSCF does not upgrade in time, cause corresponding two users in an IP address at GGSN, thus the situation of the business that causes swindle.

Simultaneously; usually can initiate new IMS registration message at once owing to upgrade the IP address user, generate new binding relationship, therefore; existing network side is to the processing procedure of upgrading the IP address user normally: just nullified and finish, be not right after again the person and carry out IMS and register and handle.Above-mentioned execution cancellation or location registration process be Session Initiation Protocol message, and the sip message amount is bigger usually, this will cause consuming more interface-free resources, and makes interdependent node such as CSCF produce loaded down with trivial details redundant operation, has increased the complexity of node processing.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of network side,, simplify the processing of CSCF simultaneously to reduce consumption of resource to upgrading the processing method of IP address user.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of network side is to upgrading the processing method of IP address user, the user has completed successfully a multimedia subsystem, IMS registration, and preserve this user's the user's permanent identification IMPI and the corresponding relation of IP address respectively in home signature user server HSS and service CSCF entity S-CSCF, this method may further comprise the steps:

After a, HSS receive notice from the corresponding relation of IMPI among the renewal HSS of packet network gateway node GGSN and IP address, carry out and upgrade operation, then this IMPI is started a timer;

B, HSS judged before timer expiry, whether receive message from the request authentication information of the applied S-CSCF of this user that self preserves, if, then stop the timer of this IMPI correspondence, S-CSCF to this initiation request returns authentication information, execution in step c then, otherwise send notice of cancellation, execution in step d then to the applied S-CSCF of this user who self preserves;

C, the S-CSCF that receives authentication information carry out authentication operations, carry out corresponding operating, process ends according to authenticating result;

D, the S-CSCF that receives notice of cancellation continue to carry out subsequent treatment by existing cancellation mode.

Preferably, step b further comprises: before timer expiry, if HSS receives the request authentication information from the non-applied S-CSCF of this user that self preserves, then HSS stops the timer of this IMPI correspondence, S-CSCF to this initiation request returns authentication information, execution in step c sends notice of cancellation, execution in step d then to the applied S-CSCF of this user who self preserves simultaneously then.

Preferably, the described authentication information of step c is: the correspondence relationship information of this user's IMPI and IP address; The process of described authentication operations is: S-CSCF judges whether the corresponding relation from user's IMPI and IP address is complementary with this user's who obtains from HSS the IMPI and the corresponding relation of IP address, as mates then authentication success, otherwise failed authentication.

Preferably, if the applied S-CSCF of this user who self preserves carries out authentication operations, and this user passes through authentication, then step c is described revises the IP address corresponding with this IMPI of self preserving according to being operating as that authenticating result is carried out: S-CSCF, and the IP address of this IMPI and the current use of this user is preserved in binding; And notify the success of user and HSS authentication respectively;

If the applied S-CSCF of this user that right and wrong self are preserved carries out authentication operations, and this user passes through authentication, then step c is described adds the IP address and the preservation of this IMPI correspondence according to being operating as that authenticating result is carried out: S-CSCF, and the IP address of this IMPI and the current use of this user is preserved in binding; And notify the success of user and HSS authentication respectively;

If the applied S-CSCF of this user who self preserves carries out authentication operations, and this user does not pass through authentication, then whether step c is described relatively more identical with the IP address original binding relationship of preserving from the IP address that HSS obtains according to being operating as that authenticating result is carried out: S-CSCF, if identical, then do not change the IP address corresponding of self preserving with this IMPI; If difference is then deleted the IP address and the binding relationship thereof of this IMPI correspondence, the S-CSCF of this execution authentication operations notifies user and HSS failed authentication respectively then;

If the applied S-CSCF of this user that right and wrong self are preserved carries out authentication operations, and this user is by authentication, and then step c is described according to being operating as that authenticating result is carried out: S-CSCF notifies user and HSS failed authentication respectively.

Preferably, after the described HSS of step a receives notice from the corresponding relation of the renewal IMPI of GGSN and IP address, further comprise: HSS carries out subsequent operation after confirming that the pairing IP of this IMPI address of self preserving is different with the IP address in the update notification again.

Preferably, the described renewal of step a is operating as: the corresponding relation of preserving the IP address in this IMPI and the update notification.

Preferably, before timer expiry, further comprise: if modification has taken place user's subscription data, and cause having changed original S-CSCF, then HSS stops the timer of this IMPI correspondence, directly send notice of cancellation, execution in step d then to the applied S-CSCF of this user who self preserves.

Completed successfully an IMS registration the user, and in HSS and S-CSCF, preserve respectively under the situation of corresponding relation of this user's IMPI and IP address, key of the present invention is, after HSS receives information from the corresponding relation of IMPI among the renewal HSS of GGSN and IP address, carry out and upgrade operation, then this IMPI is started a timer; Afterwards, HSS judged before timer expiry, whether receive message from the request authentication information of the applied S-CSCF of this user that self preserves, if, then stop the timer of this IMPI correspondence, the S-CSCF that asks to this initiation returns authentication information, carries out authentication operations by the S-CSCF that receives authentication information, carry out corresponding operating, process ends according to authenticating result; If behind the timer expiry, HSS does not still receive the message from the request authentication information of the applied S-CSCF of this user that self preserves, then send notice of cancellation, continue to carry out subsequent treatment by existing cancellation mode by the S-CSCF that receives notice of cancellation to the applied S-CSCF of this user who self preserves.

Use the present invention, when the user upgrades the IP address and registers at once again, the log off procedure of network side and user's network registration process are merged into registration process one time, reduced consumption of resource, reduce the redundant operation of interdependent nodes such as CSCF simultaneously, simplified the processing of interdependent nodes such as CSCF.

Description of drawings

Figure 1 shows that and use schematic flow sheet of the present invention.

Embodiment

Below in conjunction with accompanying drawing the present invention is done detailed description further.

Thinking of the present invention is: after HSS receives information from the corresponding relation of IMPI among the renewal HSS of GGSN and IP address, carry out and upgrade operation, then this IMPI is started a timer; Before this timer expiry, if HSS receives the authentication request that the corresponding in the past S-CSCF of this renewal IP address user sends, then network side is directly carried out location registration process, handles and no longer carry out to nullify; If receive the authentication request that is not that the corresponding in the past S-CSCF of this renewal IP address user sends, the S-CSCF that then should initiate authentication request carries out location registration process, and the corresponding in the past S-CSCF of this renewal IP address user then carries out to nullify and handles; After this timer expiry, HSS does not receive and handles the authentication request that the pairing S-CSCF of this renewal IP address user sends, and then network side is directly carried out to nullify and handled.

That is to say, after the user upgrades the IP address, initiate register requirement again immediately, and request be original S-CSCF the time, network side is no longer carried out to nullify and is handled, and only carries out location registration process and covers original preservation information.

Figure 1 shows that and use schematic flow sheet of the present invention.In the present embodiment, suppose that user UE has successfully finished once registration, preserve the binding relationship of this user's IP address and this user's IMPI at HSS, and the sign of the S-CSCF that uses of this user, preserve the binding relationship of this user's IP address and this user's IMPI among the S-CSCF.Promptly in HSS, there is corresponding relation as shown in table 1, in S-CSCF, has corresponding relation as shown in table 2.

	IMS territory user ID	PS territory user ID	This user's corresponding address	The S-CSCF of this user's registration
	IMS territory user ID	PS territory user ID	This user's corresponding address	The S-CSCF of this user's registration	User A	IMPI	IMSI	The IP address	S-CSCF

Table 1

	IMS territory user ID	This user's corresponding address
	IMS territory user ID	This user's corresponding address	User A	IMPI	The IP address

Table 2

Step 101～step 103, the user initiates a PDP Context activation, and obtaining GGSN is a new IP address of its distribution; The user IMPI of GGSN in HSS transmission renewal HSS is with the notice of IP address corresponding relation afterwards, after HSS confirms that the pairing IP of this IMPI address of self preserving is different with the IP address in the update notification, upgrade this corresponding relation, promptly preserve the corresponding relation of the IP address in this IMPI and the update notification; Then this IMPI is started a timer.

Before timer expiry, if user's business datum (User Profile) is not revised, then the registered S-CSCF of this user remains valid in HSS; If user's modification business datum, and finally cause having changed original S-CSCF, then HSS directly carries out to nullify and handles, i.e. execution in step 104A.

Before timer expiry, if this user has initiated the register requirement of IMS, then execution in step 104, promptly carry out location registration process; If before timer expiry, this user does not initiate the register requirement of IMS, and then HSS initiates network and nullifies processing, and promptly execution in step 104A carries out to nullify and handles.

Step 104～step 105, the user initiates register requirement, and this request arrives S-CSCF through P-CSCF and I-CSCF.

Step 106, S-CSCF asks authentication information to HSS, comprises user's identification information in this solicited message.

Step 107, after HSS receives above-mentioned request, whether the sign of the S-CSCF of judgement initiation request is that preserved with self identical with the sign of the S-CSCF that IMPI this user is corresponding, if it is identical, send authentication information, the i.e. binding relationship of this user's IMPI and IP address then directly for the S-CSCF of the request of initiation; If different, execution in step 104A then to delete this IMPI that preserves in original old S-CSCF and the corresponding relation of IP address, sends authentication information, the i.e. binding relationship of this user's IMPI and IP address for the S-CSCF of the request of initiation again.That is to say, when the corresponding S-CSCF of this IMPI that has preserved in S-CSCF and the HSS of request authentication is not same S-CSCF, then carry out location registration process, then carry out for the former S-CSCF that has been friends in the past and nullify processing for new S-CSCF.

Step 108～step 110, with from this user's of HSS the IMPI and the corresponding informance of IP address whether the S-CSCF that receives authentication information check from the IP address of user's identify label and use thereof and to be complementary;

If be complementary, think that then it is a validated user, change the log-on message of this user, promptly if former S-CSCF then revises the pairing IP of this IMPI address of self having preserved at self; If new S-CSCF then adds the pairing IP of this IMPI address, should carry out the S-CSCF of authentication operations simultaneously to HSS send server allocation request message, with the success of notice HSS authentication, return the information that succeeds in registration to the user by P-CSCF and I-CSCF, control this user and insert, allow this user to use the IMS business;

If do not match, think that then it is a disabled user, change the log-on message of this user at self, promptly if former S-CSCF, if whether the IP address of then judging the same original preservation in IP address that HSS issues is identical, then do not change the pairing IP of this IMPI address of self having preserved, if different this IMPI pairing IP address and the binding relationship of self having preserved thereof of then deleting; If new S-CSCF then self does not process.The S-CSCF that should carry out authentication operations is to HSS send server allocation request message then, with notice HSS failed authentication,, refuses this 2G user and inserts to the information that the user returns registration failure by P-CSCF and I-CSCF.

That preserved according to self corresponding with IMPI this user the S-CSCF of step 104A, HSS sign is initiated network-initiated deregistration notice to this S-CSCF, deletes this IMPI that self preserves and the binding relationship of IP address and S-CSCF simultaneously.

Step 105A～step 107A, S-CSCF sends notice of cancellation to corresponding user and P-CSCF respectively according to the notice that receives, obtain the response respectively of user and P-CSCF after, return to HSS again and nullify response.

Have again, because registration request from user message is transmitted arrival S-CSCF through P-CSCF and I-CSCF, the S-CSCF data of this user's correspondence in HSS are not deletion also, and when this user has only upgraded the register requirement of initiating again behind the IP address with preceding once same demand, I-CSCF can directly obtain these S-CSCF data from HSS, avoid I-CSCF to reselect the process of S-CSCF, reduced the workload of I-CSCF.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1, a kind of network side is to upgrading the processing method of IP address user, the user has completed successfully a multimedia subsystem, IMS registration, and in home signature user server HSS and service CSCF entity S-CSCF, preserve this user's the user's permanent identification IMPI and the corresponding relation of IP address respectively, it is characterized in that this method may further comprise the steps:

After a, HSS receive notice from the corresponding relation of IMPI and IP address among the renewal HSS of packet network gateway node GGSN, carry out and upgrade operation, then this IMPI is started a timer;

2, method according to claim 1, it is characterized in that, step b further comprises: before timer expiry, if HSS receives the request authentication information from the non-applied S-CSCF of this user that self preserves, then HSS stops the timer of this IMPI correspondence, and the S-CSCF that asks to this initiation returns authentication information, then execution in step c, send notice of cancellation, execution in step d then to the applied S-CSCF of this user who self preserves simultaneously.

3, method according to claim 1 and 2 is characterized in that, the described authentication information of step c is: the correspondence relationship information of this user's IMPI and IP address; The process of described authentication operations is: S-CSCF judges whether the corresponding relation from user's IMPI and IP address is complementary with this user's who obtains from HSS the IMPI and the corresponding relation of IP address, as mates then authentication success, otherwise failed authentication.

4, method according to claim 2 is characterized in that,

If the applied S-CSCF of this user who self preserves carries out authentication operations, and this user passes through authentication, then step c is described revises the IP address corresponding with this IMPI of self preserving according to being operating as that authenticating result is carried out: S-CSCF, and the IP address of this IMPI and the current use of this user is preserved in binding; And notify the success of user and HSS authentication respectively;

If the applied S-CSCF of this user who self preserves carries out authentication operations, and this user does not pass through authentication, then whether step c is described relatively more identical with the IP address original binding relationship of preserving from the IP address that HSS obtains according to being operating as that authenticating result is carried out: S-CSCF, if the identical IP address corresponding of self preserving of then not changing with this IMPI, if difference is then deleted the IP address and the binding relationship thereof of this IMPI correspondence, the S-CSCF of this execution authentication operations notifies user and HSS failed authentication respectively then;

5, method according to claim 1 and 2, it is characterized in that, after the described HSS of step a receives notice from the corresponding relation of the renewal IMPI of GGSN and IP address, further comprise: HSS carries out subsequent operation after confirming that the pairing IP of this IMPI address of self preserving is different with the IP address in the update notification again.

6, method according to claim 1 is characterized in that, the described renewal of step a is operating as: the corresponding relation of preserving the IP address in this IMPI and the update notification.

7, method according to claim 1, it is characterized in that, before timer expiry, further comprise: if modification has taken place user's subscription data, and cause having changed original S-CSCF, then HSS stops the timer of this IMPI correspondence, directly sends notice of cancellation, execution in step d then to the applied S-CSCF of this user who self preserves.