CN101360332B

CN101360332B - Call forbidden user and wrong user processing method for IP multimedia system

Info

Publication number: CN101360332B
Application number: CN2007101431635A
Authority: CN
Inventors: 霍玉臻; 李世涛; 郝振武; 王健
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-08-03
Filing date: 2007-08-03
Publication date: 2012-07-18
Anticipated expiration: 2027-08-03
Also published as: CN101360332A

Abstract

The invention provides a disposal method of the IP multimedia subsystem to forbidden calls or false user calls, which includes steps as following: firstly, a user can send a call request to an agent conversation control function body, wherein, the user-preferred common user sign is provided; secondly, provided the user is a forbidden or false user, an agent conversation control function body can insert the user-preferred common user sign in the requests above into the call request, and transmit the request to a service conversation control function body; finally, the service conversation control body knows that the user is a forbidden or false user according to the call request. Without modifying IMS frame in existence, the adoption of the invention can effectively deal with the forbidden or false user calls, and can forbid the forbidden or false user calls.

Description

IP Multimedia System is exhaled taboo or the processing method of wrong customer call

Technical field

The present invention relates to IP Multimedia System, be specifically related to that a kind of IP Multimedia System is exhaled taboo or the processing method of wrong customer call.

Background technology

In IMS (IP Multimedia System), an IMS user can have a plurality of publicly-owned identify labels, and wherein operator can wherein one or more publicly-owned identify labels be set to forbid call out (barred) state, is called to prohibit and exhales the user.Prohibit according to the related request of TS29.228 appendix in B.2.1 and to exhale the user can initiate registration, nullify, but can't make a call, multimedia conversation business such as subscription.

IMS user need at first register if carry out session, and the process of registration is exactly that the position of oneself is registered on network.

Fig. 1 is IMS user's register flow path figure, relates generally to following network element and equipment: UE (subscriber equipment), P-CSCF (agent conversation control function entity), I-CSCF (inquiry conversation control function entity), S-CSCF (serving session control function entity), HSS (home subscriber server).Wherein exhale user's processing to see step 119 to taboo.

In the current techniques, IMS user's register flow path is seen accompanying drawing 1, may further comprise the steps:

Step 101, UE (user) sends register requirement to P-CSCF, has the publicly-owned identify label of user in the request;

Step 102 when P-CSCF receives register requirement, disposes the I-CSCF that finds the user attaching Network Access Point through DNS inquiry or this locality, and register requirement is forwarded to this I-CSCF;

Step 103, I-CSCF sends the S-CSCF allocation request message to HSS, and request distributes S-CSCF;

Step 104, HSS returns the S-CSCF assignment response message to I-CSCF, wherein comprises the capabilities list of the S-CSCF name or the S-CSCF of distribution;

Step 105, I-CSCF selects S-CSCF from the capabilities list of above-mentioned S-CSCF name or S-CSCF, and login request message is sent to this selected S-CSCF;

If S-CSCF need carry out authentication to the user, then execution in step 106～116; Otherwise jump to step 117:

Step 106～116, S-CSCF sends user authentication request to HSS, and to obtain the authentification of user vector, HSS returns the user authentication response (106～107) that comprises the authentification of user vector to S-CSCF; S-CSCF structure challenge request (Unauthorized message), after the request of should challenging was forwarded to UE, UE constructed challenge responses, and after S-CSCF received challenge responses message, the legitimacy of judges was accomplished authentication, authentication (108～116) to the user;

Step 117, S-CSCF sends user's configuring request to HSS;

Step 118, HSS storage S-CSCF information, and user's subscription data, charging address information be included in user's configuration response return to S-CSCF;

Step 119, S-CSCF makes up the response of succeeding in registration, and the P-Associated-URI header field value of response message is carried all publicly-owned identify labels except that the publicly-owned identify label of barred of user;

Step 120, S-CSCF will succeed in registration to respond and be transmitted to I-CSCF;

Step 121, I-CSCF will succeed in registration to respond and be transmitted to P-CSCF;

Step 122, P-CSCF receives the response of succeeding in registration, and the information such as publicly-owned identify label of carrying in the registration reply message are kept at this locality, the response of will succeeding in registration is transmitted to UE;

Owing to do not comprise the publicly-owned identify label of Barred in the response message, so P-CSCF do not have this user data, if receive the service request that this ID is relevant, can think that then this user is unregistered.

In subscription, notification procedure, S-CSCF can not notify forbidden user data to P-CSCF yet, so P-CSCF also can't obtain user's the publicly-owned identify label of Barred in addition.

Existing IMS exhales handling process to see accompanying drawing 2 to rising, and may further comprise the steps:

Step 201; Calling UE (UE#1) is sent conversation request to caller P-CSCF (P-CSCF#1); User's initiation session, this conversation request can be carried a P-Preferred-Identity (the preferred public user identity of user) message header, and this message header is optional; It is that the user hopes the publicly-owned identify label used to can be described as the preferred public user identity of user; For a certain reason, UE is filling in P-Preferred-Identity, possibly extend this as the publicly-owned identify label of Barred or possibly fill out mistake.

Step 202; Request message arrives P-CSCF; P-CSCF can check at first whether P-Preferred-Identity exists: if there is P-Preferred-Identity; Whether the data in the P-CSCF inspection message header are initiation session user's a current registered publicly-owned identify label; If P-CSCF just uses an identical P-Asserted-Identity head (be used to inform S-CSCF, this publicly-owned identify label is trusty) of content and replaces the P-Preferred-Identity hair toward S-CSCF.If P-Preferred-Identity does not comprise a common identity sign of having registered; P-CSCF will delete this message header; In this case, perhaps under the situation that does not have the P-Preferred-Identity head, P-CSCF will add a P-Asserted-Identity head; Wherein comprise the default publicly-owned identify label of initiating the user, again the session request message is mail to the S-CSCF of user attaching.

If in step 201; UE extends this as the publicly-owned identify label of Barred or other wrong publicly-owned identify labels; There is not this user's log-on data in current mechanism owing to P-CSCF; Can think that the publicly-owned identify label of user that conversation message carries does not up exist, P-CSCF just revises conversation request (replace original publicly-owned identify label be a registration the publicly-owned identify label of default subscribers) and will talk about and be routed to S-CSCF.

Step 203～208; Originating S-CSCF (S-CSCF#1) carries out controlling and processing services, afterwards the session request is transmitted to terminating S-CSCF (S-CSCF#2), and terminating S-CSCF carries out certain controlling and processing services; Called P-CSCF is mail in request, and called P-CSCF issues the called subscriber with the session request;

If in step 201, UE extends this as Barred user, and perhaps other wrong users replace with the publicly-owned identify label of default subscribers owing in the step 202 with it, and S-CSCF will think that this calling is legal, allows to call out and proceeds.

Step 209～213, called UE are responded session and are set up successful respond to called P-CSCF, and session is set up successful respond one tunnel and arrived calling UE through called P-CSCF, terminating S-CSCF, originating S-CSCF, caller P-CSCF.

Can find out that there is defective in IMS to publicly-owned identify label of barred and wrong user processing at present, causes the IMS system can't forbid the calling of the publicly-owned identity of barred user.

Summary of the invention

The technical problem that the present invention will solve provides that a kind of IP Multimedia System is exhaled taboo or the processing method of wrong customer call, can realize that the IMS system forbids exhaling user or wrong Client-initiated to be called out.

In order to address the above problem, the invention provides that a kind of IP Multimedia System is exhaled taboo or the processing method of wrong customer call, comprising:

(a) user has sent to call for to the agent conversation control function entity and has asked, and wherein carries the preferred public user identity of user;

(b), and described request is transmitted to serving session control function entity if said user exhales user or wrong user, agent conversation control function entity the preferred public user identity of the user in the described request to be inserted into to call for to have asked for prohibiting;

(c) serving session control function entity knows that according to rising to call for to ask this user exhales or wrong user for prohibiting.

Further; The agent conversation control function entity is received described request in the said step (b); The preferred public user identity of user through obtaining wherein matees with the local registered public user identity of preserving; If the preferred public user identity of said user does not all match with the public user identity of any one registration wherein, judge that then said user exhales user or wrong user for prohibiting.

Further; The agent conversation control function entity judges that said user is after taboo is exhaled user or wrong user in the said step (b); Insert one in asking and comprised the P-Asserted-Identity that default public user identity identifies rising to call for; Keep P-Preferred-Identity simultaneously, or carry the preferred public user identity of user, more said is called for to ask and be transmitted to serving session control function entity with other expansion header fields and spreading parameters.

Further; In the said step (c) serving session control function entity receive said call for ask after, obtain the preferred public user identity of user in the described request, if said be designated to prohibit exhale user or wrong user; According to carrier policy, allow to continue to call out or forbid calling out.

Further, if forbid calling out, serving session control function entity is then returned to the agent conversation control function entity and is forbidden response, and the agent conversation control function entity forbids that with said response returns to the user, has refused to call for and has asked.

Further, if allow to continue call out, serving session control function entity is called for when asking having transmitted to other network elements, delete P-Preferred-Identity, or other has comprised the expansion header field and the spreading parameter of the preferred public user identity of user.

In sum; The invention provides that a kind of IP Multimedia System is exhaled taboo or the processing method of wrong customer call; Under situation about need not make an amendment to existing IMS framework; Just can exhale the user to make a call to taboo effectively and handle, and can forbid exhaling user or wrong Client-initiated to be called out.

Description of drawings

Fig. 1 is IMS user's register flow path figure of the prior art;

Fig. 2 is that P-CSCF of the prior art and S-CSCF exhale the user processing flow chart to rising;

P-CSCF and S-CSCF process chart when Fig. 3 exhales user or wrong user's initiation session for taboo of the present invention.

Embodiment

In the prior art; P-CSCF can't know whether the user profile that comprises in the request message is Barred user or wrong user; When content in receiving request in the P-Preferred-Identity and the local registered public user identity of preserving are unmatched; Just in request message, insert P-Asserted-Identity; Comprise a default public user identity sign, delete P-Preferred-Identity simultaneously, will work to call for to ask being transmitted to S-CSCF then.Whether S-CSCF can't know this request from the user of a Barred or the user of mistake in the request of receiving from P-CSCF like this, so be necessary to let P-CSCF that barred user or wrong user's common identity sign is dealt into S-CSCF.

Present embodiment provides a kind of IP Multimedia System to taboo being exhaled or the processing method of wrong customer call, and is as shown in Figure 3:

Step 301: the user has sent to call for to P-CSCF and has asked, and in P-Preferred-Identity, carries the public user identity that UE preferably uses, if there is not P-Preferred-Identity, representes that then UE preferably uses the default user sign;

Step 302:P-CSCF received call for ask after, public user identity in the P-Preferred-Identity and the local registered public user identity of preserving are mated.If all do not match with the public user identity of wherein any one registration; Be illustrated as to prohibit and exhale user or wrong user; Then insert P-Asserted-Identity in asking rising to call for, comprise a default public user identity and identify, keep P-Preferred-Identity simultaneously; Or carry the preferred public user identity of user with other expansion header fields and spreading parameters, will work to call for to ask being transmitted to S-CSCF then;

P-CSCF received call for ask after, preferred public user identity of the user in the P-Preferred-Identity and the local registered public user identity of preserving are mated.If the public user identity of the preferred public user identity of the user in the P-Preferred-Identity and one of them registration coupling; Rise call for ask in the insertion P-Asserted-Identity; Comprise the public user identity sign of being mated; But the P-Preferred-Identity of the preferred public user identity of user has been carried in deletion, promptly no longer the preferred public user identity of user has been inserted into to call for and has asked, and will work to call for to ask being transmitted to S-CSCF then;

If P-CSCF receives rises to call for to ask and do not contain P-Preferred-Identity in the message, P-CSCF then inserts P-Asserted-Identity in asking rising to call for, and comprises a default public user identity and identifies.

Step 303:S-CSCF receives that P-CSCF sends rises to call for and asks, and makes handled according to rising to call for to ask.

Step 304: if comprise P-Preferred-Identity in the request message; Explain that the user is Barred user or wrong user; Then, can allow to continue to call out or forbid calling out, call out if forbid according to carrier policy; Then return and forbid (Forbidden) response, the refusal conversation request to P-CSCF; If allow to continue to call out, when other network elements are transmitted request message, the deletion P-Preferred-Identity, or other has comprised the expansion header field and the spreading parameter of the preferred public user identity of user.S-CSCF received call for ask after, if do not comprise P-Preferred-Identity in the request message, explain that the user is the user who allow to call out, the further processing of proceeding to call out.

Step 305: exhale or wrong user if prohibit, and forbid calling out, the response of forbidding that P-CSCF will receive is transmitted to the user.

Claims

1. an IP Multimedia System is exhaled taboo or the processing method of wrong customer call, comprising:

(b) the agent conversation control function entity is received described request; The preferred public user identity of user through obtaining wherein matees with the local registered public user identity of preserving; If the preferred public user identity of said user does not all match with the public user identity of any one registration wherein; Judge that then said user exhales user or wrong user for prohibiting, call for to rising of transmitting of serving session control function entity at the agent conversation control function entity and carry the preferred public user identity of user in asking;

(c) serving session control function entity is carried the preferred public user identity of user in asking and is judged this user and exhale or wrong user for prohibiting according to rising to call for.

2. the method for claim 1; It is characterized in that; The agent conversation control function entity judges that said user is after taboo is exhaled user or wrong user in the said step (b); Insert one in asking and comprised the P-Asserted-Identity that default public user identity identifies rising to call for; Keep the preferred public user identity P-Preferred-Identity of user simultaneously, or carry the preferred public user identity of user, more said is called for to ask and be transmitted to serving session control function entity with other expansion header fields and spreading parameters.

3. the method for claim 1; It is characterized in that; In the said step (c) serving session control function entity receive said call for ask after; Carry the preferred public user identity of user in asking and judge this user and exhale or wrong user according to rising to call for,, allow to continue to call out or forbid calling out according to carrier policy for prohibiting.

4. method as claimed in claim 3; It is characterized in that if forbid calling out, serving session control function entity is then returned to the agent conversation control function entity and forbidden response; The agent conversation control function entity forbids that with said response returns to the user, has refused to call for and has asked.

5. method as claimed in claim 3; It is characterized in that; Continue to call out if allow; Serving session control function entity is called for when asking having transmitted to other network elements, the preferred public user identity P-Preferred-Identity of deletion user, or other has comprised the expansion header field and the spreading parameter of the preferred public user identity of user.