CN102035805B - Third party registration failure processing method and device for IMS (IP Multimedia Subsystem) - Google Patents
Third party registration failure processing method and device for IMS (IP Multimedia Subsystem) Download PDFInfo
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Abstract
The invention provides third party registration failure processing method and device for an IMS (IP Multimedia Subsystem). The method comprises the following steps of: receiving a user state subscription request transmitted by a subscribing party and establishing subscription conversation with the subscribing party when the third party registration failure of a user is obtained by inquiring; transmitting a cancellation notice request to the subscribing party; and canceling the user by the subscribing party according to the cancellation notice request. The method and the device ensure that a relevant network element establishes the subscription conversation with the subscribing party according to the normal subscription process when the third party registration of the user fails so as to transmit the cancellation notice request for indicating cancellation to the subscribing party, thereby effectively guaranteeing the consistency of user data among equipment and solving the problem of inconformity existing in the user data among the equipment caused by that the third party registration failure processing method in the relevant technology can not inform the subscribing party of canceling the user due to unavailable establishment of the subscription conversation by the third party registration failure of the user.
Description
Technical field
The present invention relates to the communications field, be used for third-party registration fail processing method and the device of IMS (IPMultimedia Subsystem, IP Multimedia System) in particular to one.
Background technology
IMS system is as the high-level component of next generation network, one is established independent of lower floor's bearer network, based on open SIP (Session InitiationProtocol for realizing abundant business, session initiation protocol)/IP and the controllable platform of ALARA Principle, its abundant business is realized by various application server AS (Application Server) and is provided.In IMS communication network, the multimedia service that user will use network to provide, user UE (User Equipment, subscriber equipment) associated by PUI (Public UserIdentities, public user identity) must register on IMS core network and AS in advance, and the registration of PUI on AS is third-party registration.In order to know the state variation of registered user in time, UE and P-CSCF can initiate the state subscription to this registration PUI immediately after user has registered.
According to the description of 3GPP 24.229 technical specification, the concrete register flow path that PUI associated by user UE carries out registering on IMS core net and AS is see Fig. 1, wherein P-CSCF (Proxy-Call Session Control Function, Proxy Call Session Control Function) to subscribe to flow process be step 112a ~ 112h, it is step 113a ~ 113h that UE subscribes to flow process, two independently business processing flows, there is not strict precedence relationship in two handling processes, it can be parallel processing, in order to make signaling process more clear, two flow processs are separately drawn herein, specifically comprise the following steps:
Step 101, UE initiates network registry, sends REGISTER (registration) request to P-CSCF;
Step 102, P-CSCF forwards REGISTER and asks I-CSCF (Interrogating-CSCF, query call conversation control function);
Step 103, I-CSCF sends UAR (User Authorization Request, user-authorization-request) requesting query User Status to HSS (Home Subscriber Server, home subscribed services device);
Step 104, User Status Query Result is returned to I-CSCF by UAA (UserAuthorization Answer, user-authorization-answer) message by HSS;
Step 105, I-CSCF forwards registration REGISTER and asks S-CSCF (Serving-CSCF, service call conversation control function);
Step 106, S-CSCF sends SAR (Server Assignment Request, server assignment request) request and notifies that user registers to HSS, and download user subscription data;
Step 107, HSS returns SAA (Server Assignment Answer, server-assignment is replied), and download user subscription data is to S-CSCF;
Step 108, registration completes, and S-CSCF returns 200 OK responses of registration;
Step 109a, S-CSCF trigger third-party registration according to user contracting data, send REGISTER (the third-party, third party) message to AS;
Step 109b, AS return 200 OK of third-party registration;
Step 110,200 OK that I-CSCF forwards in step 108 respond P-CSCF;
Step 111,200 OK that P-CSCF forwards in step 110 respond UE;
Step 112a, P-CSCF initiate user registration state and subscribe to, and send SUBSCRIBE (subscription) request to I-CSCF;
Step 112b, I-CSCF send UAR requesting query User Status to HSS;
Step 112c, HSS return User Status Query Result by UAA to I-CSCF;
Step 112d, I-CSCF forward SUBSCRIBE subscribe request to S-CSCF;
Step 112e, S-CSCF accept subscription, return 200 OK responses;
Step 112f, I-CSCF forward 200 OK and respond P-CSCF;
Step 112g, S-CSCF send NOTIFY notice request, and set up owing to subscribing to, S-CSCF directly sends NOTIFY to P-CSCF, the login state of notice P-CSCF user;
200 OK that step 112h, P-CSCF return NOTIFY notice request respond and subscribe to flow process to S-CSCF, P-CSCF and terminate;
Step 113a, UE initiate user registration state and subscribe to, and send SUBSCRIBE subscribe request to P-CSCF;
Step 113b, P-CSCF forward the SUBSCRIBE subscribe request of UE to S-CSCF;
Step 113c, S-CSCF accept subscription, return 200 OK responses;
Step 113d, P-CSCF forward 200 OK and respond UE;
Step 113e, S-CSCF send NOTIFY notice request, the login state of notice UE user;
Step 113f, P-CSCF forward NOTIFY notice request to UE;
Step 113g, UE return 200 OK responses of NOTIFY notice request;
Step 113h, P-CSCF forward 200 OK respond to S-CSCF, UE subscribe to flow process terminate.
In above-mentioned flow process, user UE initiates Initial network registration with the PUI of association, succeed in registration (corresponding to step 101 ~ 107), S-CSCF returns the 200OK success response of registration (corresponding to step 108 to UE, 110 ~ 111), in order to know the login state of user PUI in time, after P-CSCF and UE receives 200 OK responses, initiate the login state subscription (corresponding respectively to step 112a ~ 112d and step 113a ~ 113b) to this PUI respectively, subscribe to accordingly, S-CSCF also will notify login state change (corresponding respectively to step 112g and step 113e ~ 113f) of this PUI of subscriber at any time.According to user PUI the service trigger criteria of contracting, succeed in registration, the AS to each coupling third-party registration trigger condition is also sent a third-party registration request (corresponding to step 109a) by S-CSCF.Under normal circumstances, AS returns 200 OK success responses (corresponding to step 109b) after receiving the REGISTER request of S-CSCF transmission.So far, user UE completes in the registration of network, the resource that can normally use network to provide and service.
But AS, after receiving third party REGISTER and asking, may cause for some reason and cannot provide service and return 5xx failure response message immediately, namely there is third-party registration failure.
A kind of third-party registration fail processing method for IMS is provided in correlation technique, the method follows 3GPP 24.229 technical specification, under S-CSCF receives the 5xx response condition that AS returns, contract according to PUI, have two kinds of default treatment modes: " SESSION_CONTINUED ": S-CSCF no longer does any process, user still exists in the registration of core network; " SESSION_TERMINATED ": S-CSCF by PUI before nullifying in the registration of core network.In order to provide excellent service and satisfied Consumer's Experience to user, PUI is signing have employed " SESSION_TERMINATED " mode more, in this manner, after S-CSCF receives 5xx response, describe according to 24.229 technical specifications, S-CSCF will perform network logout flow path, before cancellation, PUI is in the registration of core network, under normal circumstances, when S-CSCF performs network logout flow path, UE and P-CSCF subscribes to and is all successfully completed, and such S-CSCF normally can notify that UE and P-CSCF deletes the user's log-on data on it.
Inventor to find in correlation technique in third-party registration fail processing method, when S-CSCF receive 5xx respond and perform network logout flow path time, probably because network element exists time delay to the process of message and Internet Transmission, and cause occurring following two kinds of abnormal conditions:
1, when the subscribe request SUBSCRIBE of UE or P-CSCF arrives I-CSCF, I-CSCF initiates LIR (Location Info Request, location information request) when inquiring about, HSS has received the SAR de-registration request that S-CSCF sends, namely user is in unregistered state on HSS, HSS returns the unregistered response of user to I-CSCF, and I-CSCF does not forward subscribe request SUBSCRIBE, thus causes subscribing to unsuccessfully;
2, when the subscribe request SUBSCRIBE of UE or P-CSCF arrives S-CSCF, the 5xx that S-CSCF returns according to the AS received before this responds the user data deleted on it, owing to not having user's registration information, therefore S-CSCF refusal is subscribed to, thus causes subscribing to unsuccessfully;
Above-mentioned 1st kind of abnormal conditions are that SUBSCRIBE subscribe request does not arrive S-CSCF, above-mentioned 2nd kind of abnormal conditions are the time arriving S-CSCF time lag in the 5xx response that AS returns that SUBSCRIBE subscribe request arrives S-CSCF, these two kinds of abnormal conditions all can make to subscribe to session and cannot set up, so subscriber's logging off users cannot be notified, thus the user data of equipment room is caused to there is inconsistent problem.
Summary of the invention
The present invention aims to provide a kind of third-party registration fail processing method for IMS and device, can solve third-party registration fail processing method in correlation technique makes subscription session to set up due to the failure of user's third-party registration, so subscriber's logging off users cannot be notified, thus the user data of equipment room is caused to there is inconsistent problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of third-party registration fail processing method for IMS, comprise the following steps: I-CSCF receives the User Status subscribe request sent by subscriber, and when inquiring about the third-party registration failure obtaining user, forward User Status subscribe request; S-CSCF sets up subscription session according to User Status subscribe request and subscriber, and sends notice of cancellation request when inquiring about the third-party registration failure obtaining user to subscriber; Subscriber is according to notice of cancellation request logging off users.
Preferably, in the above-mentioned methods, I-CSCF receives the User Status subscribe request sent by subscriber, and when inquiring about the third-party registration failure obtaining user, forwarding User Status subscribe request and specifically comprising: I-CSCF receives the User Status subscribe request sent by P-CSCF; I-CSCF is to the User Status of HSS inquiring user; When HSS return user unregistered time, I-CSCF forwards User Status subscribe request to S-CSCF.
Preferably, in the above-mentioned methods, S-CSCF sets up subscription session according to User Status subscribe request and subscriber, and sends notice of cancellation request to subscriber specifically comprise when inquiring about the third-party registration failure obtaining user: S-CSCF returns subscription success response to P-CSCF; Whether S-CSCF inquiry exists the user data of user; If there is not user data, then S-CSCF sends notice of cancellation request to P-CSCF; S-CSCF deletes the subscription data of the P-CSCF that it is preserved.
Preferably, in the above-mentioned methods, subscriber specifically comprises according to notice of cancellation request logging off users: P-CSCF receives notice of cancellation request; P-CSCF deletes the log-on message of user.
To achieve these goals, according to a further aspect in the invention, additionally provide a kind of third-party registration fail processing method for IMS, comprise the following steps: receive subscriber send User Status subscribe request, and inquire about obtain user third-party registration failure time and subscriber set up subscription session; Notice of cancellation request is sent to subscriber; Subscriber is according to notice of cancellation request logging off users.
Preferably, in the above-mentioned methods, receive the User Status subscribe request that subscriber sends, and when inquiring about the third-party registration failure obtaining user and subscriber set up and subscribe to session and specifically comprise: S-CSCF receives the User Status subscribe request that UE sends; Whether S-CSCF inquiry exists the user data of user; If there is not user data, then S-CSCF returns subscription success response to UE.
Preferably, in the above-mentioned methods, send notice of cancellation request to subscriber specifically to comprise: S-CSCF sends notice of cancellation request to UE; S-CSCF deletes the subscription data of the UE that it is preserved.
Preferably, in the above-mentioned methods, subscriber specifically comprises according to notice of cancellation request logging off users: UE receives notice of cancellation request; The User Status that UE arranges user is unregistered.
To achieve these goals, according to a further aspect in the invention, additionally provide a kind of third-party registration failure handling device for IMS, comprise: forwarding module, the User Status subscribe request sent by subscriber is received for I-CSCF, and when inquiring about the third-party registration failure obtaining user, forward User Status subscribe request; First notification module, sets up subscription session for S-CSCF according to User Status subscribe request and subscriber, and sends notice of cancellation request when inquiring about the third-party registration failure obtaining user to subscriber; First cancellation module, for subscriber according to notice of cancellation request logging off users.
Preferably, in said apparatus, forwarding module specifically comprises: the first receiving element, receives the User Status subscribe request sent by P-CSCF for I-CSCF; First query unit, for the User Status of I-CSCF to HSS inquiring user; Retransmission unit, for return as HSS user unregistered time, I-CSCF forwards User Status subscribe request to S-CSCF.
Preferably, in said apparatus, the first notification module specifically comprises: the first subscription response unit, returns subscription success response for S-CSCF to P-CSCF; Whether the second query unit, exist the user data of user for S-CSCF inquiry; First notification unit, if for there is not user data, then S-CSCF sends notice of cancellation request to P-CSCF; First delete cells, deletes the subscription data of the P-CSCF that it is preserved for S-CSCF.
To achieve these goals, according to a further aspect in the invention, additionally provide a kind of third-party registration failure handling device for IMS, comprise the following steps: subscribe to and set up module, for receive subscriber send User Status subscribe request, and inquire about obtain user third-party registration failure time and subscriber set up subscription session; Second notification module, for sending notice of cancellation request to subscriber; Second cancellation module, for subscriber according to notice of cancellation request logging off users.
Preferably, in said apparatus, subscription is set up module and is specifically comprised: the second receiving element, receives the User Status subscribe request of UE transmission for S-CSCF; Whether the 3rd query unit, exist the user data of user for S-CSCF inquiry; Second subscription response unit, if for there is not user data, then S-CSCF returns subscription success response to UE.
Preferably, in said apparatus, the second notification module specifically comprises: the second notification unit, sends notice of cancellation request for S-CSCF to UE; Second delete cells, deletes the subscription data of the UE that it is preserved for S-CSCF.
First network element in above-described embodiment receives the User Status subscribe request sent by subscriber, even if learn the third-party registration failure of user through inquiry, also subscription session is set up according to normal subscription flow process and subscriber, and then the notice of cancellation request being used to indicate cancellation is sent to subscriber, subscriber is made to complete cancellation to this user, thus effectively ensure that the consistency of equipment room user data, due to the failure of user's third-party registration, subscription session cannot be set up so overcome third-party registration fail processing method in correlation technique, so subscriber's logging off users cannot be notified, thus cause the user data of equipment room to there is inconsistent problem.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart that UE carries out initial registration and subscription;
Fig. 2 shows the flow chart of processing method according to a first embodiment of the present invention;
Fig. 3 shows the flow chart of processing method according to a second embodiment of the present invention;
Fig. 4 shows the flow chart of processing method according to a third embodiment of the present invention;
Fig. 5 shows the structure chart of processing unit according to a fourth embodiment of the present invention;
Fig. 6 shows the structure chart of processing unit according to a fifth embodiment of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 2 shows the flow chart of processing method according to a first embodiment of the present invention, and the method comprises the following steps:
Step 201, I-CSCF receives the User Status subscribe request SUBSCRIBE sent by subscriber, and when inquiring about the third-party registration failure obtaining user, forwards User Status subscribe request;
Step 202, S-CSCF sets up subscription session according to User Status subscribe request and subscriber, and sends notice of cancellation request when inquiring about the third-party registration failure obtaining user to subscriber;
Step 203, subscriber is according to notice of cancellation request logging off users.
First I-CSCF in the present embodiment receives the User Status subscribe request sent by subscriber, even if learn the third-party registration failure of user through inquiry, also User Status subscribe request is forwarded according to normal flow process of subscribing to S-CSCF, S-CSCF sets up subscription session according to this subscribe request and subscriber, and send to subscriber the notice of cancellation request being used to indicate cancellation when inquiring about the third-party registration failure learning user, subscriber is made to complete cancellation to user, thus effectively ensure that the consistency of equipment room (between S-CSCF and subscriber in the present embodiment) user data, due to the failure of user's third-party registration, subscription session cannot be set up so overcome third-party registration fail processing method in correlation technique, so subscriber's logging off users cannot be notified, thus cause the user data of equipment room to there is inconsistent problem, particularly, solve the following problem that in background technology, the 1st kind of abnormal conditions cause: I-CSCF does not forward subscribe request after learning the failure of user's third-party registration, therefore SUBSCRIBE subscribe request cannot arrive S-CSCF, and then S-CSCF cannot set up subscription session with subscriber, subscriber cannot know the state information of user's third-party registration failure, therefore cannot the cancellation of completing user, thus cause the user data between S-CSCF and subscriber inconsistent.
Preferably, in the above-mentioned methods, step 201 specifically comprises: I-CSCF receives the User Status subscribe request sent by P-CSCF; I-CSCF is to the User Status of HSS inquiring user; When HSS return user unregistered time, I-CSCF forwards User Status subscribe request to S-CSCF.
The present embodiment is that P-CSCF initiates user registration state subscribe request (namely subscriber is P-CSCF), and the situation of the third-party registration failure of user.As shown in Figure 1 under normal circumstances, after I-CSCF receives the SUBSCRIBE subscribe request of P-CSCF transmission, inquiring user state is initiated to HSS, HSS returns user for normal registration state, then I-CSCF forwards SUBSCRIBE subscribe request to S-CSCF, S-CSCF returns the subscription success response message of 200 OK to P-CSCF, thus between P-CSCF and S-CSCF, set up subscription session.In processing method in the related, after I-CSCF receives the SUBSCRIBE subscribe request of P-CSCF transmission, inquiring user state is initiated to HSS, HSS returns user for unregistered state (i.e. the third-party registration failure of user), now I-CSCF does not forward SUBSCRIBE subscribe request, namely SUBSCRIBE subscribe request cannot arrive S-CSCF, therefore cannot set up subscription session between P-CSCF and S-CSCF.The present embodiment is also the situation of the third-party registration failure of user, but the I-CSCF in the present embodiment still forwards SUBSCRIBE subscribe request according to the flow process of normal condition to S-CSCF, thus make the S-CSCF when the third-party registration failure of user also set up subscription session with P-CSCF, for P-CSCF, S-CSCF notifies that User Status provides prerequisite and basis.
Preferably, in the above-mentioned methods, step 202 specifically comprises: S-CSCF returns subscription success response to P-CSCF; Whether S-CSCF inquiry exists the user data of user; If there is not user data, then S-CSCF sends notice of cancellation request to P-CSCF; S-CSCF deletes the subscription data of the P-CSCF that it is preserved.
The present embodiment is that P-CSCF initiates user registration state subscribe request (namely subscriber is P-CSCF), and the situation of the third-party registration failure of user.In the present embodiment, first S-CSCF returns subscription success response to P-CSCF, namely represent that S-CSCF and P-CSCF successfully establishes subscription session, then S-CSCF sends notice of cancellation request NOTIFY to notify that P-CSCF deletes the user data of this user when inquiry learns that user data does not exist (i.e. this user's third-party registration failure) to P-CSCF, this NOTIFY presses network notice of cancellation message and sends, its subscription status is set to " rejected (refusal) ", and deletes the P-CSCF subscription data be originally kept on S-CSCF.Do like this, take full advantage of the informing mechanism after subscribing to session establishment, notify the User Status that subscriber's (for P-CSCF in the present embodiment) is current to improve the information symmetrical of equipment room with the form of network notice of cancellation message.
Preferably, in the above-mentioned methods, step 203 specifically comprises: P-CSCF receives notice of cancellation request; P-CSCF deletes the log-on message of user.
The present embodiment is that P-CSCF initiates user registration state subscribe request (namely subscriber is P-CSCF), and the situation of the third-party registration failure of user.P-CSCF in the present embodiment, after receiving notice of cancellation request, deletes the log-on message of user in time.Do like this, solve the following problem that in background technology, the 1st kind of abnormal conditions cause: I-CSCF does not forward subscribe request after learning the failure of user's third-party registration, therefore SUBSCRIBE subscribe request cannot arrive S-CSCF, and then S-CSCF cannot set up with P-CSCF and subscribes to session, P-CSCF cannot know the state information of user's third-party registration failure, therefore cannot the cancellation of completing user, thus cause the user data between S-CSCF and P-CSCF inconsistent, P-CSCF exists the problem of junk data.
Fig. 3 shows the flow chart of processing method according to a second embodiment of the present invention, and the method comprises the following steps:
Step 301, receive subscriber send User Status subscribe request, and inquire about obtain user third-party registration failure time and subscriber set up subscription session;
Step 302, sends notice of cancellation request to subscriber;
Step 303, subscriber is according to notice of cancellation request logging off users.
First the present embodiment receives the User Status subscribe request sent by subscriber, when learning the third-party registration failure of user through inquiry, still set up subscription session according to normal subscription flow process and subscriber, and the notice of cancellation request being used to indicate cancellation is sent to subscriber, subscriber is made to complete cancellation to user, thus effectively ensure that the consistency of equipment room user data, due to the failure of user's third-party registration, subscription session cannot be set up so overcome third-party registration fail processing method in correlation technique, so subscriber's logging off users cannot be notified, thus cause the user data of equipment room to there is inconsistent problem, particularly, solve the following problem that in background technology, the 2nd kind of abnormal conditions cause: refusal is subscribed to owing to learning the failure of user's third-party registration, and then subscription session cannot be set up with subscriber, subscriber cannot know the state information of user's third-party registration failure, therefore cannot the cancellation of completing user, thus cause the user data between subscriber inconsistent.
Preferably, in the above-mentioned methods, step 301 specifically comprises: S-CSCF receives the User Status subscribe request that UE sends; Whether S-CSCF inquiry exists the user data of user; If there is not user data, then S-CSCF returns subscription success response to UE.
The present embodiment is that UE initiates user registration state subscribe request (namely subscriber is UE), and the situation of the third-party registration failure of user.As shown in Figure 1 under normal circumstances, after S-CSCF receives the SUBSCRIBE subscribe request of UE transmission, whether the state of inquiring about this user is normal, if user is normal registration state, then S-CSCF accepts subscription, return 200 OK and subscribe to success response, thus establish the subscription session between S-CSCF and UE.In processing method in the related, after S-CSCF receives the SUBSCRIBE subscribe request of UE transmission, whether the state of inquiring about this user is normal, if user is unregistered state (i.e. the third-party registration failure of user), now S-CSCF refusal is subscribed to, namely SUBSCRIBE subscribe request arrives the time arriving S-CSCF time lag in the 5xx response that AS returns of S-CSCF, therefore cannot set up subscription session between UE and S-CSCF.The present embodiment is also the situation of the third-party registration failure of user, but the S-CSCF in the present embodiment still accepts subscription according to the flow process of normal condition after learning the failure of user's third-party registration, thus make the S-CSCF when the third-party registration failure of user also set up subscription session with UE, for UE, S-CSCF notifies that User Status provides prerequisite and basis.
Preferably, in the above-mentioned methods, step 302 specifically comprises: S-CSCF sends notice of cancellation request to UE; S-CSCF deletes the subscription data of the UE that it is preserved.
The present embodiment is that UE initiates user registration state subscribe request (namely subscriber is UE), and the situation of the third-party registration failure of user.Because S-CSCF has learnt the failure of user's third-party registration in step 301, therefore the S-CSCF in the present embodiment sends notice of cancellation request NOTIFY to notify that UE deletes the user data of this user to UE, this NOTIFY presses network notice of cancellation message and sends, its subscription status is set to " rejected (refusal) ", and deletes the UE subscription data be originally kept on S-CSCF.Do like this, take full advantage of the informing mechanism after subscribing to session establishment, notify the User Status that subscriber's (for UE in the present embodiment) is current to improve the information symmetrical of equipment room with the form of network notice of cancellation message.
Preferably, in the above-mentioned methods, step 303 specifically comprises: UE receives notice of cancellation request; The User Status that UE arranges user is unregistered.
The present embodiment is that UE initiates user registration state subscribe request (namely subscriber is UE), and the situation of the third-party registration failure of user.UE in the present embodiment, after receiving notice of cancellation request, deletes the log-on message of user in time.Do like this, solve the following problem that in background technology, the 2nd kind of abnormal conditions cause: S-CSCF refuses to subscribe to after learning the failure of user's third-party registration, namely SUBSCRIBE subscribe request arrives the time arriving S-CSCF time lag in the 5xx response that AS returns of S-CSCF, therefore S-CSCF cannot set up with UE and subscribes to session, UE cannot know the state information of user's third-party registration failure, therefore cannot the cancellation of completing user, thus causing the user data between S-CSCF and UE inconsistent, UE cannot the problem of logging off users in time.
Fig. 4 shows the flow chart of processing method according to a third embodiment of the present invention, and the method comprises the following steps:
Step 401, UE initiates network registry, sends REGISTER and asks P-CSCF;
Step 402, P-CSCF forwards REGISTER and asks I-CSCF;
Step 403, I-CSCF sends UAR requesting query User Status to HSS;
Step 404, User Status Query Result is returned to I-CSCF by UAA message by HSS;
Step 405, I-CSCF forwards registration REGISTER and asks S-CSCF;
Step 406, S-CSCF send SAR ask HSS to notify user registers, and download user subscription data;
Step 407, HSS returns SAA, and download user subscription data is to S-CSCF;
Step 408, registration completes, and S-CSCF returns 200 OK responses of registration;
Step 409a, S-CSCF trigger third-party registration according to user contracting data, send REGISTER message to AS;
The 5xx that step 409b, AS return for third-party registration request responds, and S-CSCF deletes the user data on it after receiving the 5xx response that AS returns, and notifies HSS logging off users, and HSS arranges this user for unregistered state according to this notice;
Step 410, I-CSCF forwards 200 OK and responds P-CSCF;
Step 411, P-CSCF forwards 200 OK and responds UE;
Step 412a, P-CSCF initiate user registration state and subscribe to, and send SUBSCRIBE and ask I-CSCF;
Step 412b, I-CSCF send SARUAR requesting query User Status to HSS;
It is unregistered that step 412c, HSS return user by UAA to I-CSCF;
Step 412d, I-CSCF still forward SUBSCRIBE subscribe request to S-CSCF according to normal flow process of subscribing to;
Step 412e, S-CSCF accept subscription according to normal flow process of subscribing to, and return 200 OK responses;
Step 412f, I-CSCF forward 200 OK and respond P-CSCF;
Step 412g, S-CSCF send notice request NOTIFY to P-CSCF, send by network notice of cancellation message, and arrange subscription status for " rejected ", the login state of notice P-CSCF user, and delete the subscription data of P-CSCF;
Step 412h, P-CSCF return 200 OK, and delete log-on data corresponding to this user after receiving NOTIFY notice;
Step 413a, UE initiate user registration state and subscribe to, and send SUBSCRIBE subscribe request to P-CSCF;
Step 413b, P-CSCF forward the SUBSCRIBE subscribe request of UE to S-CSCF;
Not this user's registration information is learnt in step 413c, S-CSCF inquiry, but S-CSCF still accepts subscription according to normal flow process of subscribing to, and returns 200 OK responses;
Step 413d, P-CSCF forward 200 OK and respond UE;
Step 413e, S-CSCF send NOTIFY notice request, send by network notice of cancellation message, and arrange subscription status for " rejected ", the login state of notice UE user, and delete the subscription data of UE;
Step 413f, P-CSCF forward NOTIFY notice request to UE;
Step 413g, UE return 200 OK, and the User Status of this user are set to unregistered state after receiving NOTIFY notice;
Step 413h, P-CSCF forward 200 OK respond to S-CSCF, UE subscribe to flow process terminate.
Step 412a in the present embodiment ~ 412h solves and causes S-CSCF cannot set up with P-CSCF by the 1st kind of abnormal conditions (namely SUBSCRIBE subscribe request cannot arrive S-CSCF) in background technology subscribing to session, therefore cannot P-CSCF be notified, and then P-CSCF cannot delete the user data on it, thus cause the user data on S-CSCF and P-CSCF inconsistent, P-CSCF exists the problem of junk data; Step 413a ~ 413h solves and causes S-CSCF cannot set up with UE by the 2nd kind of abnormal conditions in background technology (5xx that the time lag that namely SUBSCRIBE subscribe request arrives S-CSCF returns in AS responds the time arriving S-CSCF) subscribing to session, therefore cannot UE be notified, and then UE cannot nullify this user in time, thus the problem causing the user data on S-CSCF and UE inconsistent.Even if therefore the related network elements in the present embodiment learns the third-party registration failure of user through inquiry, also subscription session is set up according to normal subscription flow process and subscriber, and then the notice of cancellation request being used to indicate cancellation is sent to subscriber, make subscriber complete cancellation to this user, thus effectively ensure that the consistency of equipment room user data.
Fig. 5 shows the structure chart of processing unit according to a fourth embodiment of the present invention, and this device comprises:
Forwarding module 501, receives the User Status subscribe request sent by subscriber for I-CSCF, and when inquiring about the third-party registration failure obtaining user, forwards User Status subscribe request;
First notification module 502, sets up subscription session for S-CSCF according to User Status subscribe request and subscriber, and sends notice of cancellation request when inquiring about the third-party registration failure obtaining user to subscriber;
First cancellation module 503, for subscriber according to notice of cancellation request logging off users.
The User Status subscribe request that first I-CSCF in the present embodiment adopts forwarding module 501 to receive to be sent by subscriber, even if learn the third-party registration failure of user through inquiry, also User Status subscribe request is forwarded according to normal flow process of subscribing to S-CSCF, then S-CSCF adopts the first notification module 502 to set up subscription session according to this subscribe request and subscriber, and send to subscriber the notice of cancellation request being used to indicate cancellation when inquiring about the third-party registration failure learning user, last subscriber adopts the first cancellation module 503 to complete cancellation to user, thus effectively ensure that the consistency of equipment room (between S-CSCF and subscriber in the present embodiment) user data, due to the failure of user's third-party registration, subscription session cannot be set up so overcome third-party registration fail processing method in correlation technique, so subscriber's logging off users cannot be notified, thus cause the user data of equipment room to there is inconsistent problem, particularly, solve the following problem that in background technology, the 1st kind of abnormal conditions cause: I-CSCF does not forward subscribe request after learning the failure of user's third-party registration, therefore SUBSCRIBE subscribe request cannot arrive S-CSCF, and then S-CSCF cannot set up subscription session with subscriber, subscriber cannot know the state information of user's third-party registration failure, therefore cannot the cancellation of completing user, thus cause the user data between S-CSCF and subscriber inconsistent.
Preferably, in said apparatus, forwarding module 501 specifically comprises: the first receiving element, receives the User Status subscribe request sent by P-CSCF for I-CSCF; First query unit, for the User Status of I-CSCF to HSS inquiring user; Retransmission unit, for return as HSS user unregistered time, I-CSCF forwards User Status subscribe request to S-CSCF.
The present embodiment is that P-CSCF initiates user registration state subscribe request (namely subscriber is P-CSCF), and the situation of the third-party registration failure of user.As shown in Figure 1 under normal circumstances, after I-CSCF receives the SUBSCRIBE subscribe request of P-CSCF transmission, inquiring user state is initiated to HSS, HSS returns user for normal registration state, then I-CSCF forwards SUBSCRIBE subscribe request to S-CSCF, S-CSCF returns the subscription success response message of 200OK to P-CSCF, thus between P-CSCF and S-CSCF, set up subscription session.In processing method in the related, after I-CSCF receives the SUBSCRIBE subscribe request of P-CSCF transmission, inquiring user state is initiated to HSS, HSS returns user for unregistered state (i.e. the third-party registration failure of user), now I-CSCF does not forward SUBSCRIBE subscribe request, namely SUBSCRIBE subscribe request cannot arrive S-CSCF, therefore cannot set up subscription session between P-CSCF and S-CSCF.The present embodiment is also the situation of the third-party registration failure of user, but the I-CSCF in the present embodiment still forwards SUBSCRIBE subscribe request according to the flow process of normal condition to S-CSCF, thus make the S-CSCF when the third-party registration failure of user also set up subscription session with P-CSCF, for P-CSCF, S-CSCF notifies that User Status provides prerequisite and basis.
Preferably, in said apparatus, the first notification module 502 specifically comprises: the first subscription response unit, returns subscription success response for S-CSCF to P-CSCF; Whether the second query unit, exist the user data of user for S-CSCF inquiry; First notification unit, if for there is not user data, then S-CSCF sends notice of cancellation request to P-CSCF; First delete cells, deletes the subscription data of the P-CSCF that it is preserved for S-CSCF.
The present embodiment is that P-CSCF initiates user registration state subscribe request (namely subscriber is P-CSCF), and the situation of the third-party registration failure of user.In the present embodiment, first S-CSCF returns subscription success response to P-CSCF, namely represent that S-CSCF and P-CSCF successfully establishes subscription session, then S-CSCF sends notice of cancellation request NOTIFY to notify that P-CSCF deletes the user data of this user when inquiry learns that user data does not exist (i.e. this user's third-party registration failure) to P-CSCF, this NOTIFY presses network notice of cancellation message and sends, its subscription status is set to " rejected (refusal) ", and deletes the P-CSCF subscription data be originally kept on S-CSCF.Do like this, take full advantage of the informing mechanism after subscribing to session establishment, notify the User Status that subscriber's (for P-CSCF in the present embodiment) is current to improve the information symmetrical of equipment room with the form of network notice of cancellation message.
Fig. 6 shows the structure chart of processing unit according to a fifth embodiment of the present invention, and this device comprises:
Module 601 is set up in subscription, for receive subscriber send User Status subscribe request, and inquire about obtain user third-party registration failure time and subscriber set up subscription session;
Second notification module 602, for sending notice of cancellation request to subscriber;
Second cancellation module 603, for subscriber according to notice of cancellation request logging off users.
First the present embodiment adopts subscription to set up module 601 and receives the User Status subscribe request sent by subscriber, when learning the third-party registration failure of user through inquiry, still set up subscription session according to normal subscription flow process and subscriber, then the second notification module 602 is adopted to send the notice of cancellation request being used to indicate cancellation to subscriber, last subscriber adopts the second cancellation module 603 to complete cancellation to user, thus effectively ensure that the consistency of equipment room user data, due to the failure of user's third-party registration, subscription session cannot be set up so overcome third-party registration fail processing method in correlation technique, so subscriber's logging off users cannot be notified, thus cause the user data of equipment room to there is inconsistent problem, particularly, solve the following problem that in background technology, the 2nd kind of abnormal conditions cause: refusal is subscribed to owing to learning the failure of user's third-party registration, and then subscription session cannot be set up with subscriber, subscriber cannot know the state information of user's third-party registration failure, therefore cannot the cancellation of completing user, thus cause the user data between subscriber inconsistent.
Preferably, in said apparatus, subscription is set up module 601 and is specifically comprised: the second receiving element, receives the User Status subscribe request of UE transmission for S-CSCF; Whether the 3rd query unit, exist the user data of user for S-CSCF inquiry; Second subscription response unit, if for there is not user data, then S-CSCF returns subscription success response to UE.
The present embodiment is that UE initiates user registration state subscribe request (namely subscriber is UE), and the situation of the third-party registration failure of user.As shown in Figure 1 under normal circumstances, after S-CSCF receives the SUBSCRIBE subscribe request of UE transmission, whether the state of inquiring about this user is normal, if user is normal registration state, then S-CSCF accepts subscription, return 200 OK and subscribe to success response, thus establish the subscription session between S-CSCF and UE.In processing method in the related, after S-CSCF receives the SUBSCRIBE subscribe request of UE transmission, whether the state of inquiring about this user is normal, if user is unregistered state (i.e. the third-party registration failure of user), now S-CSCF refusal is subscribed to, namely SUBSCRIBE subscribe request arrives the time arriving S-CSCF time lag in the 5xx response that AS returns of S-CSCF, therefore cannot set up subscription session between UE and S-CSCF.The present embodiment is also the situation of the third-party registration failure of user, but the S-CSCF in the present embodiment still accepts subscription according to the flow process of normal condition after learning the failure of user's third-party registration, thus make the S-CSCF when the third-party registration failure of user also set up subscription session with UE, for UE, S-CSCF notifies that User Status provides prerequisite and basis.
Preferably, in said apparatus, the second notification module 602 specifically comprises: the second notification unit, sends notice of cancellation request for S-CSCF to UE; Second delete cells, deletes the subscription data of the UE that it is preserved for S-CSCF.
The present embodiment is that UE initiates user registration state subscribe request (namely subscriber is UE), and the situation of the third-party registration failure of user.The failure of user's third-party registration is learnt because S-CSCF has adopted subscription to set up module 601, therefore the S-CSCF in the present embodiment sends notice of cancellation request NOTIFY to notify that UE deletes the user data of this user to UE, this NOTIFY presses network notice of cancellation message and sends, its subscription status is set to " rejected (refusal) ", and deletes the UE subscription data be originally kept on S-CSCF.Do like this, take full advantage of the informing mechanism after subscribing to session establishment, notify the User Status that subscriber's (for UE in the present embodiment) is current to improve the information symmetrical of equipment room with the form of network notice of cancellation message.
From above description, can find out, the above embodiments of the present invention also set up subscription session according to normal subscription flow process and subscriber when the failure of user's third-party registration, and then the notice of cancellation request being used to indicate cancellation is sent to subscriber, make subscriber complete cancellation to this user, thus effectively ensure that the consistency of equipment room user data.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1., for a third-party registration fail processing method for IP Multimedia System, it is characterized in that, comprise the following steps:
Query call conversation control function network element receives the User Status subscribe request sent by subscriber, and when inquiring about the third-party registration failure obtaining described user, forwards described User Status subscribe request to service call conversation control function network element;
Service call conversation control function network element sets up subscription session according to described User Status subscribe request and subscriber, and sends notice of cancellation request when inquiring about the third-party registration failure obtaining described user to described subscriber;
Described subscriber nullifies described user according to described notice of cancellation request.
2. method according to claim 1, it is characterized in that, query call conversation control function network element receives the User Status subscribe request sent by subscriber, and when inquiring about the third-party registration failure obtaining described user, forwarding described User Status subscribe request and specifically comprising:
Described query call conversation control function network element receives the User Status subscribe request sent by Proxy Call Session Control Function network element;
Described query call conversation control function network element inquires about the User Status of described user to home subscribed services device;
When described home subscribed services device return described user unregistered time, described query call conversation control function network element forwards described User Status subscribe request to described service call conversation control function network element.
3. method according to claim 2, it is characterized in that, service call conversation control function network element sets up subscription session according to described User Status subscribe request and subscriber, and sends notice of cancellation request to described subscriber specifically comprise when inquiring about the third-party registration failure obtaining described user:
Described service call conversation control function network element returns subscription success response to described Proxy Call Session Control Function network element;
Whether described service call conversation control function network element inquiry exists the user data of described user;
If there is not described user data, then described service call conversation control function network element sends notice of cancellation request to described Proxy Call Session Control Function network element;
Described service call conversation control function network element deletes the subscription data of the described Proxy Call Session Control Function network element that it is preserved.
4. method according to claim 2, is characterized in that, described subscriber nullifies described user according to described notice of cancellation request and specifically comprises:
Described Proxy Call Session Control Function network element receives described notice of cancellation request;
Described Proxy Call Session Control Function network element deletes the log-on message of described user.
5., for a third-party registration failure handling device for IP Multimedia System, it is characterized in that, comprising:
Forwarding module, the User Status subscribe request sent by subscriber is received for query call conversation control function network element, and when inquiring about the third-party registration failure obtaining described user, forward described User Status subscribe request to service call conversation control function network element;
First notification module, sets up subscription session for service call conversation control function network element according to described User Status subscribe request and subscriber, and sends notice of cancellation request when inquiring about the third-party registration failure obtaining described user to described subscriber;
First cancellation module, nullifies described user for described subscriber according to described notice of cancellation request.
6. device according to claim 5, is characterized in that, described forwarding module specifically comprises:
First receiving element, receives the User Status subscribe request sent by Proxy Call Session Control Function network element for described query call conversation control function network element;
First query unit, inquires about the User Status of described user to home subscribed services device for described query call conversation control function network element;
Retransmission unit, for return when described home subscribed services device described user unregistered time, described query call conversation control function network element forwards described User Status subscribe request to described service call conversation control function network element.
7. device according to claim 6, is characterized in that, described first notification module specifically comprises:
First subscription response unit, returns subscription success response for described service call conversation control function network element to described Proxy Call Session Control Function network element;
Whether the second query unit, exist the user data of described user for described service call conversation control function network element inquiry;
First notification unit, if for there is not described user data, then described service call conversation control function network element sends notice of cancellation request to described Proxy Call Session Control Function network element;
First delete cells, deletes the subscription data of the described Proxy Call Session Control Function network element that it is preserved for described service call conversation control function network element.
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| CN101079892A (en) * | 2007-07-10 | 2007-11-28 | 华为技术有限公司 | Processing method, system and device for subscription and registration status |
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