CN1881975B - Method for calling user terminal of IP multimedia subsystem - Google Patents
Method for calling user terminal of IP multimedia subsystem Download PDFInfo
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- CN1881975B CN1881975B CN2005101182544A CN200510118254A CN1881975B CN 1881975 B CN1881975 B CN 1881975B CN 2005101182544 A CN2005101182544 A CN 2005101182544A CN 200510118254 A CN200510118254 A CN 200510118254A CN 1881975 B CN1881975 B CN 1881975B
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Abstract
The invention relates to a method for calling the user terminal of IP multimedia subsystem, which comprises: the inquire-call conservation control function module (I-CSCF) inquires the register position of called user to the attaching user server (HSS); I-CSCF, based on the response of HSS, sends the conservation initialize protocol (SIP) request to the service-call conservation control function module (S-CSCF); when the S-CSCF is overtime to the response of SIP sent from I-CSCF, I-CSCF reselects S-CSCF, and sends SIP request to S-CSCF. With said invention, if the S-CSCF that processing the IMS non-registered service feedback from HSS, do not feedback response caused by device accidence or communication interruption, I-CSCF can reselect other S-CSCFA to process said non-register service of said IMS user, to improve the service quality.
Description
Technical field
The present invention relates to a kind of communication technology, relate in particular to a kind of method of calling out the user terminal of IP Multimedia System.
Background technology
In IMS (IP Multimedia System) network, when an IMS user's UE (user terminal) does when called, the I-CSCF of called network (inquiry CSCF (call session control function module)) will inquire about this IMS user's registered location by the Cx-Location-Query order to HSS (home subscriber server).
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user be in UNREGISTERED (unregistered) state or relevant ID (identify label) (as with the user terminal of the shared jack per line of this IMS user) registered or relevant ID (and as with the user terminal of the shared jack per line of this IMS user) when being in the UNREGISTERED state, HSS will return the S-CSCF that handles this IMS user's unregistered service by the Cx-Location-QueryResp order to I-CSCF, I-CSCF sends to the S-CSCF that HSS returns with the SIP request, is handled this IMS user's unregistered service by S-CSCF.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user be in NOT REGISTERED (non-registered) state and relevant ID (as with the user terminal of the shared jack per line of this IMS user) when also being in NOT REGISTERED state, HSS will return the S-CSCF capability set of this IMS customer requirements by the Cx-Location-QueryResp order to I-CSCF, I-CSCF selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF asks to send to the S-CSCF of this selection with SIP, is handled this IMS user's unregistered service by S-CSCF.
In the prior art,, when promptly I-CSCF sends sip message, can not wait for the response of this message, therefore can cause following shortcoming because I-CSCF can be used as the agency who does not have state:
When S-CSCF transmits the SIP request or handles IMS user's registered business or during unregistered service, if this S-CSCF is because the not response of reasons such as equipment fault or communication disruption, will cause session timeout, make the SIP request of Calling Side will be because of overtime the failure (may cause call loss).
When the called IMS user is in UNREGISTERED state or the relevant registered or relevant ID of ID and is in the UNREGISTERED state, called IMS user's unregistered service also can't be carried out, thereby cause the IMS network may be for a long time all can not (recover successfully to be registered to other normal S-CSCF after service or called IMS user start shooting for this IMS user provides correct business up to this S-CSCF, the IMS network could provide correct business for this IMS user, this process possibility last very long such as several hours, several days even longer time).
When this IMS user is in NOT REGISTERED state and relevant ID and also is in the NOTREGISTERED state, called IMS user's unregistered service also can't be carried out.
Summary of the invention
Target of the present invention provides a kind of method of user terminal of call IMS.When selected S-CSCF does not respond because of reasons such as equipment fault or communication disruption, can select other S-CSCF, thereby improve the session success rate, or the network prompting of similar " user that you call out temporarily can't connect, and please dials after a while again ".
The invention discloses a kind of method of calling out the user terminal of IP Multimedia System, comprise: interrogation-call session control function module I-CSCF receives an initial request for the called subscriber, to home subscriber server HSS inquiry called subscriber's registered location; The part identify label is in unregistered state and all identify labels are not in login state DIAMETER_SOME_ID_UNREGISTERED when the response of HSS comprises, or etc. during the indication of pending unregistered service DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state, and I-CSCF sends Session initiation Protocol SIP request according to the response of HSS to service-call session control function module S-CSCF; And when S-CSCF does not respond, reselect another S-CSCF, send the SIP request to the S-CSCF that selects then.
Described step I-CSCF further comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: when comprising the unified resource identifier URI of S-CSCF in the response of HSS, I-CSCF sends to this S-CSCF with the SIP request, so that asked by this S-CSCF treatment S IP.
The step of reselecting S-CSCF comprises: I-CSCF obtains the desired S-CSCF capability set of this user terminal, and selects a S-CSCF according to the S-CSCF capability set.
Described I-CSCF obtains the desired S-CSCF capability set of this user terminal and comprises: obtain the desired S-CSCF capability set of this user terminal by revising order Cx-Location-Query or Cx-Select-Pull;
Described modification Cx-Location-Query order is meant increases customer location query type AVP (User-Location-Type AVP) parameter in this order;
Described modification Cx-Select-Pull is meant and is revised as the proprietary sign of the internet protocol multi-media of this order IMPI with good conditionsi.
Described step I-CSCF sends Session initiation Protocol SIP request according to the response of HSS to service-call session control function module S-CSCF and further comprises: when comprising the desired S-CSCF capability set of this user terminal in the response of HSS, I-CSCF selects a S-CSCF according to the desired S-CSCF capability set of this user terminal, then the S-CSCF of selection is issued in the SIP request, so that ask by this S-CSCF treatment S IP.
Described step I-CSCF also comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: I-CSCF preserves the desired S-CSCF capability set of this user terminal that HSS returns.
The step of reselecting S-CSCF comprises: I-CSCF selects a S-CSCF according to the desired S-CSCF capability set of this user terminal.
Described step I-CSCF further comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: the URI that does not promptly comprise S-CSCF in the response of HSS, when also not comprising the desired S-CSCF capability set of user terminal, the optional S-CSCF of I-CSCF is so that issue this S-CSCF with the SIP request.
The step of reselecting S-CSCF comprises: the optional S-CSCF of I-CSCF is so that issue this S-CSCF with the SIP request.
Described step I-CSCF further comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: also comprise the desired S-CSCF capability set of user terminal at HSS in the response that I-CSCF returns.
The step of reselecting S-CSCF comprises: I-CSCF selects a S-CSCF according to the desired S-CSCF capability set of this user terminal, then the S-CSCF of selection is issued in the SIP request, so that asked by this S-CSCF treatment S IP.
When I-CSCF can not select a S-CSCF according to the desired capability set of this user terminal, I-CSCF returned 600 responses to user terminal, after this, if I-CSCF receives the sip response that S-CSCF returns, no longer transmits this sip response.
Therefore, according to the present invention, if the S-CSCF of the processing IMS user unregistered service that HSS returns is because reasons such as equipment fault or communication disruption, do not return response, I-CSCF handles this IMS user's unregistered service according to other S-CSCF of the S-CSCF capability set gravity treatment of IMS customer requirements, if the S-CSCF of gravity treatment successfully handles this IMS user's unregistered service, can avoid the SIP request of Calling Side to fail because of overtime, called IMS user's unregistered service is avoided the contingent major defect that correct business can not be provided for this IMS user for a long time also with correct execution.
Description of drawings
Fig. 1 shows call IMS user's of the present invention flow chart;
Fig. 2 shows the call IMS user signaling figure of the embodiment of the invention 1;
Fig. 3 shows the call IMS user signaling figure of replacement scheme 3 embodiment of the present invention;
Fig. 4 shows the call IMS user signaling figure of replacement scheme 6 of the present invention.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
Basic thought of the present invention is that as shown in Figure 1, in step 11, I-CSCF is to HSS inquiry called subscriber's registered location; In step 12, I-CSCF preserves the response of HSS, and selects S-CSCF according to the response of HSS, and in step 13, I-CSCF sends the SIP request to the S-CSCF that selects;
In step 14, I-CSCF judges whether response timeout of S-CSCF,
If in step 15, I-CSCF reselects S-CSCF, in step 17, I-CSCF also sends the SIP request to S-CSCF, returns step 14 then;
Otherwise execution in step 16:I-CSCF waits for the response of S-CSCF.
In the IMS network, when an IMS user's UE does calledly, after the I-CSCF of called network receives initial request, this I-CSCF will inquire about this IMS user's registered location by Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in the UNREGISTERED state, when perhaps Xiang Guan ID was in the UNREGISTERED state and is not in the REGISTERED state, HSS was by being in the S-CSCF that unregistered state and all identify labels are not in the indication of login state DIAMETER_SOME_ID_UNREGISTERED and handle this IMS user's unregistered service as Cx-Location-QueryResp order to the identify label of I-CSCF returning part.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user was in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will be by the indication of pending unregistered service DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements such as returning as the Cx-Location-QueryResp order to I-CSCF.
In sum, HSS can return S-CSCF capability set that S-CSCF, called subscriber that response comprises registered business or unregistered service require or for empty by the Diameter response message.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, S-CSCF returns 100 Temporary Responses (optional for non-session SIP request), is handled this IMS user's registered business or unregistered service by S-CSCF.
If the II-response does not comprise the URI of S-CSCF, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements:
If a) comprise, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
B) if do not comprise, I-CSCF should preserve the indication of DIAMETER_UNREGISTERED_SERVICE, and I-CSCF chooses a S-CSCF wantonly.
C) after the processing of I-CSCF execution 3GPP code requirement SIP is asked to send to the S-CSCF of this selection, S-CSCF returns 100 Temporary Responses (optional for non-session SIP request), is handled this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response at official hour, at this moment the agency of state is arranged because of the I-CSCF conduct, then carry out troubleshooting.Fault treating procedure is described below, and promptly I-CSCF at first checks the S-CSCF capability set of whether preserving the IMS customer requirements:
If 1 preserved, I-CSCF selects a S-CSCF according to the S-CSCF capability set of the IMS customer requirements of preserving.
If 2 did not preserve, I-CSCF check whether preserved DIAMETER_UNREGISTERED_SERVICE indication:
(1) if preserved, I-CSCF chooses a S-CSCF wantonly.
(2) if do not preserve, I-CSCF (but does not comprise User-Location-Type AVP because Cx-Location-Query orders by the S-CSCF capability set of Cx-Location-Query inquiry IMS customer requirements, I-CSCF can't indicate HSS resettability collection, therefore requiring increases User-Location-Type AVP in the Cx-Location-Query order, HSS is provided with gravity treatment sign and timer when User-Location-Type is the query capability collection, return the S-CSCF capability set of IMS customer requirements), select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
After I-CSCF has selected S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's registration business and/or unregistered service by this S-CSCF, or provide the network of similar " user that you call out temporarily can't connect, and please dials after a while again " to point out.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF returns 600 responses with user terminal.After this, if I-CSCF receives the sip response that S-CSCF returns, I-CSCF ignores this sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, when finding that the user does not register, then S-CSCF informs IMS user's login state and the URI of S-CSCF by the Cx-Put order to HSS, obtains user contracting data by the Cx-Pull order.HSS removes the gravity treatment sign after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, checks S-CSCF URI, if different with existing S-CSCFURI, HSS notifies the S-CSCF that sends the Cx-Put order to nullify IMS user by the Cx-Deregister order.The S-CSCF that sends the Cx-Put order receives the Cx-Deregister order that HSS sends, nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, no longer transmit the BYE request.
Below in conjunction with accompanying drawing call flow of the present invention is described.As shown in Figure 2.
Step 2, I-CSCF inquire about this IMS user's registered location to HSS by the Cx-Location-Query order.
Step 3, HSS return to I-CSCF with Query Result (as S-CSCF).
Step 4, I-CSCF send to the S-CSCF# 1 that HSS returns with the SIP request.
Step 5, I-CSCF do not receive the response of S-CSCF# 1.
Step 6, S-CSCF# 1 inform HSS by the Cx-Put order with S-CSCF URI.
Step 7, HSS return to S-CSCF# 1 with the Cx-Put command execution results.
Step 8, S-CSCF# 1 take user data by the Cx-Pull order to HSS.
Step 9, HSS return to S-CSCF# 1 with the Cx-Pull command execution results.
Step 10, I-CSCF inquire about the S-CSCF capability set of this IMS customer requirements to HSS by the Cx-Location-Query order.
Step 16, HSS return to S-CSCF#2 with the Cx-Put command execution results.
Step 18, HSS return to S-CSCF#2 with the Cx-Pull command execution results.
Step 19, HSS nullify this IMS user by Cx-Deregister order notice S-CSCF# 1.
Step 20, S-CSCF# 1 return to S-CSCF# 1 with the Cx-Deregister command execution results.
Step 21, S-CSCF#2 return 183 Session Progress response to I-CSCF.
Step 22, I-CSCF transmit 183 Session Progress response.
Step 23, S-CSCF# 1 initiate the BYE request, and I-CSCF must not transmit this request.
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user was in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returned the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by the Cx-Location-QueryResp order.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response comprises the indication of DIAMETER_UNREGISTERED_SERVICE, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements:
If a) comprise, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
B) if do not comprise, I-CSCF should preserve the indication of DIAMETER_UNREGISTERED_SERVICE, and I-CSCF chooses a S-CSCF wantonly.
C) after the processing of I-CSCF execution 3GPP code requirement SIP is asked to send to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF checks the indication of whether preserving DIAMETER_UNREGISTERED_SERVICE:
1) if preserved, I-CSCF chooses a S-CSCF wantonly.
2) if do not preserve, I-CSCF (but does not comprise User-Location-Type AVP because Cx-Location-Query orders by the S-CSCF capability set of Cx-Location-Query inquiry IMS customer requirements, I-CSCF can't indicate HSS resettability collection, therefore requiring increases User-Location-TypeAVP in the Cx-Location-Query order, HSS is provided with gravity treatment sign and timer when User-Location-Type is the query capability collection, return the S-CSCF capability set of IMS customer requirements), select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.After HSS receives Cx-Put, the Cx-Pull order of S-CSCF transmission, remove the gravity treatment sign, check S-CSCF URI, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, the deletion user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Replacement scheme 2
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user was in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returned the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by the Cx-Location-QueryResp order.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response comprises the S-CSCF capability set of IMS customer requirements, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If the III-response neither comprises the URI of S-CSCF, do not comprise the S-CSCF capability set of IMS customer requirements again, I-CSCF should preserve the indication of DIAMETER_UNREGISTERED_SERVICE, optional S-CSCF.After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF checks the indication of whether preserving DIAMETER_UNREGISTERED_SERVICE:
1) if preserved, I-CSCF chooses a S-CSCF wantonly.
2) if do not preserve, I-CSCF (but does not comprise User-Location-Type AVP because Cx-Location-Query orders by the S-CSCF capability set of Cx-Location-Query inquiry IMS customer requirements, I-CSCF can't indicate HSS resettability collection, therefore requiring increases User-Location-Type AVP in the Cx-Location-Query order, HSS is provided with gravity treatment sign and timer when User-Location-Type is the query capability collection, return the S-CSCF capability set of IMS customer requirements), select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.After HSS receives Cx-Put, the Cx-Pull order of S-CSCF transmission, remove the gravity treatment sign, check S-CSCF URI, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, the deletion user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Replacement scheme 3
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user was in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returned the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by the Cx-Location-QueryResp order.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response does not comprise the URI of S-CSCF, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements:
If a) comprise, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
B) if do not comprise, I-CSCF should preserve the indication of DIAMETER_UNREGISTERED_SERVICE, and I-CSCF chooses a S-CSCF wantonly.
C) after the processing of I-CSCF execution 3GPP code requirement SIP is asked to send to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF checks the indication of whether having preserved DIAMETER_UNREGISTERED_SERVICE:
1) if preserved, I-CSCF chooses a S-CSCF wantonly.
2) if do not preserve, I-CSCF (but orders the essential IMPI that comprises because of Cx-Select-Pull by the S-CSCF capability set of Cx-Select-Pull inquiry IMS customer requirements, and I-CSCF can't obtain IMPI, therefore require to change into IMPI in the Cx-Select-Pull order with good conditionsi, when User Authorization Type is the query capability collection, can not have IMPI), select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.HSS checks S-CSCF URI after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, deletes user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Below in conjunction with accompanying drawing call flow of the present invention is described.As shown in Figure 3.
Step 301, I-CSCF receive initial request (invitation).
Step 302, I-CSCF inquire about this IMS user's registered location to HSS by the Cx-Location-Query order.
Step 303, HSS return to I-CSCF with Query Result (as S-CSCF).
Step 304, I-CSCF send to the S-CSCF# 1 that HSS returns with the SIP request.
Step 305, I-CSCF do not receive the response of S-CSCF# 1.
Step 306, S-CSCF# 1 inform HSS by the Cx-Put order with S-CSCF URI.
Step 307, HSS return to S-CSCF# 1 with the Cx-Put command execution results.
Step 308, S-CSCF# 1 take user data by the Cx-Pull order to HSS.
Step 309, HSS return to S-CSCF# 1 with the Cx-Pull command execution results.
Step 310, I-CSCF inquire about the S-CSCF capability set of this IMS customer requirements to HSS by the Cx-Select-Pull order.
Step 311, HSS return to I-CSCF with the Cx-Select-Pull execution result.
Step 312, I-CSCF select another S-CSCF that meets the demands according to the S-CSCF capability set of IMS customer requirements, the SIP request are sent to the S-CSCF#2 of this selection.
Step 313, S-CSCF#2 return the 100Trying response to I-CSCF.
Step 314, S-CSCF# 1 return response, and I-CSCF must not transmit this response.
Step 315, S-CSCF#2 inform HSS by the Cx-Put order with S-CSCF URI.
Step 316, HSS return to S-CSCF#2 with the Cx-Put command execution results.
Step 317, S-CSCF#2 take user data by the Cx-Pull order to HSS.
Step 318, HSS return to S-CSCF#2 with the Cx-Pull command execution results.
Step 319, HSS nullify this IMS user by Cx-Deregister order notice S-CSCF# 1.
Step 320, S-CSCF# 1 return to S-CSCF# 1 with the Cx-Deregister command execution results.
Step 321, S-CSCF#2 return 183 Session Progress response to I-CSCF.
Step 322, I-CSCF transmit 183Session Progress response.
Step 323, S-CSCF# 1 initiate the BYE request, and I-CSCF must not transmit this request.
Replacement scheme 4
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user was in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returned the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by the Cx-Location-QueryResp order.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response comprises the indication of DIAMETER UNREGISTERED SERVICE, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements:
If a) comprise, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
B) if do not comprise, I-CSCF should preserve the indication of DIAMETER_UNREGISTERED_SERVICE, and I-CSCF chooses a S-CSCF wantonly.
C) after the processing of I-CSCF execution 3GPP code requirement SIP is asked to send to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF checks the indication of whether preserving DIAMETER_UNREGISTERED_SERVICE:
1) if preserved, I-CSCF chooses a S-CSCF wantonly.
2) if do not preserve, I-CSCF (but orders the essential IMPI that comprises because of Cx-Select-Pull by the S-CSCF capability set of Cx-Select-Pull inquiry IMS customer requirements, and I-CSCF can't obtain IMPI, therefore require to change into IMPI in the Cx-Select-Pull order with good conditionsi, when User Authorization Type is the query capability collection, can not have IMPI), select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.HSS checks S-CSCF URI after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, deletes user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Replacement scheme 5
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user was in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returned the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by the Cx-Location-QueryResp order.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response comprises the S-CSCF capability set of IMS customer requirements, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If the III-response neither comprises the URI of S-CSCF, do not comprise the S-CSCF capability set of IMS customer requirements again, I-CSCF should preserve the indication of DIAMETER_UNREGISTERED_SERVICE, optional S-CSCF.After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF checks the indication of whether preserving DIAMETER_UNREGISTERED_SERVICE:
1) if preserved, I-CSCF chooses a S-CSCF wantonly.
2) if do not preserve, I-CSCF (but orders the essential IMPI that comprises because of Cx-Select-Pull by the S-CSCF capability set of Cx-Select-Pull inquiry IMS customer requirements, and I-CSCF can't obtain IMPI, therefore require to change into IMPI in the Cx-Select-Pull order with good conditionsi, when UserAuthorization Type is the query capability collection, can not have IMPI), select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.HSS checks S-CSCF URI after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, deletes user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Replacement scheme 6
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returns the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by Cx-Location-QueryResp order, returns the S-CSCF capability set of IMS customer requirements simultaneously.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements, if exist, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response does not comprise the URI of S-CSCF, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements:
If a) comprise, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
B) if do not comprise, I-CSCF chooses a S-CSCF wantonly.
C) after the processing of CSCF execution 3GPP code requirement SIP is asked to send to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF chooses a S-CSCF wantonly.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.HSS checks S-CSCF URI after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, deletes user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Below in conjunction with accompanying drawing call flow of the present invention is described.As shown in Figure 4.
Step 401, I-CSCF receive initial request (invitation).
Step 402, I-CSCF inquire about this IMS user's registered location to HSS by the Cx-Location-Query order.
Step 403, HSS return to I-CSCF with Query Result (as S-CSCF).
Step 404, I-CSCF send to the S-CSCF# 1 that HSS returns with the SIP request.
Step 405, I-CSCF do not receive the response of S-CSCF# 1.
Step 406, S-CSCF# 1 inform HSS by the Cx-Put order with S-CSCF URI.
Step 407, HSS return to S-CSCF# 1 with the Cx-Put command execution results.
Step 408, S-CSCF# 1 take user data by the Cx-Pull order to HSS.
Step 409, HSS return to S-CSCF# 1 with the Cx-Pull command execution results.
Step 410, I-CSCF select another S-CSCF that meets the demands according to the S-CSCF capability set of IMS customer requirements, the SIP request are sent to the S-CSCF#2 of this selection.
Step 411, S-CSCF#2 return the 100Trying response to I-CSCF.
Step 412, S-CSCF# 1 return response, and I-CSCF must not transmit this response.
Step 413, S-CSCF#2 inform HSS by the Cx-Put order with S-CSCF URI.
Step 414, HSS return to S-CSCF#2 with the Cx-Put command execution results.
Step 415, S-CSCF#2 take user data by the Cx-Pull order to HSS.
Step 416, HSS return to S-CSCF#2 with the Cx-Pull command execution results.
Step 417, HSS nullify this IMS user by Cx-Deregister order notice S-CSCF# 1.
Step 418, S-CSCF# 1 return to S-CSCF# 1 with the Cx-Deregister command execution results.
Step 419, S-CSCF#2 return 183 Session Progress response to I-CSCF.
Step 420, I-CSCF transmit 183 Session Progress response.
Step 421, S-CSCF# 1 initiate the BYE request, and I-CSCF must not transmit this request.
Replacement scheme 7
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returns the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by Cx-Location-QueryResp order, returns the S-CSCF capability set of IMS customer requirements simultaneously.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements, if exist, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response comprises the indication of DIAMETER_UNREGISTERED_SERVICE, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements:
If a) comprise, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.
B) if do not comprise, I-CSCF chooses a S-CSCF wantonly.
C) after the processing of CSCF execution 3GPP code requirement SIP is asked to send to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF chooses a S-CSCF wantonly.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.HSS checks S-CSCF URI after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, deletes user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Replacement scheme 8
In the IMS network, when an IMS user's UE does called, after the I-CSCF of called network receives initial request, I-CSCF will inquire about this IMS user's registered location (if a plurality of HSS are arranged, I-CSCF will inquire about the HSS that SLF obtains this IMS user place) by the Cx-Location-Query order to HSS.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in UNREGISTERED state or relevant ID and is in the UNREGISTERED state and is not in the REGISTERED state, HSS returns the indication of DIAMETER_SOME_ID_UNREGISTERED and handles the S-CSCF of this IMS user's unregistered service to I-CSCF by Cx-Location-QueryResp order, returns the S-CSCF capability set of IMS customer requirements simultaneously.
The unregistered service if this IMS user has contracted (as changeing Voice Mailbox etc.), when this IMS user is in NOT REGISTERED state and relevant ID and also is in NOT REGISTERED state, HSS will return the indication of DIAMETER_UNREGISTERED_SERVICE and the S-CSCF capability set of this IMS customer requirements to I-CSCF by the Cx-Location-QueryResp order.
After I-CSCF receives the response that HSS returns, check the response of HSS, if response comprises the indication of DIAMETER_SOME_ID_UNREGISTERED or DIAMETER_UNREGISTERED_SERVICE, I-CSCF must show as the agency of state:
If the I-response comprises the URI of S-CSCF, I-CSCF should check whether response comprises the S-CSCF capability set of IMS customer requirements, if exist, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, after the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF that HSS returns, handle this IMS user's registered business or unregistered service by S-CSCF.
If the II-response comprises the S-CSCF capability set of IMS customer requirements, I-CSCF should preserve the S-CSCF capability set of IMS customer requirements, selects a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements.After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If the III-response neither comprises the URI of S-CSCF, do not comprise the S-CSCF capability set of IMS customer requirements again, I-CSCF chooses a S-CSCF wantonly.After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by S-CSCF.
If S-CSCF is not because reasons such as equipment fault or communication disruption are returned response, I-CSCF should check the S-CSCF capability set of whether preserving the IMS customer requirements:
1. if preserved, I-CSCF should select a S-CSCF who meets the demands according to the S-CSCF capability set of the IMS customer requirements of preserving previously.
2. if do not preserve, I-CSCF chooses a S-CSCF wantonly.
After the processing of I-CSCF execution 3GPP code requirement the SIP request is sent to the S-CSCF of this selection, handle this IMS user's unregistered service by this S-CSCF, the network prompting of similar existing network existing " user that you call out temporarily can't connect, and please dials after a while again " is provided.
If I-CSCF can not select a S-CSCF who meets the demands according to the S-CSCF capability set of IMS customer requirements, I-CSCF should return 600 responses.
If after this I-CSCF receives the sip response that original S-CSCF returns, I-CSCF can not transmit sip response.
After S-CSCF receives the SIP request of I-CSCF transmission, check IMS user's login state, find user data of no use, to login state and S-CSCF URI that HSS informs IMS user, obtain user contracting data by Cx-Put, Cx-Pull order.HSS checks S-CSCF URI after receiving Cx-Put, the Cx-Pull order of S-CSCF transmission, if different with existing S-CSCF URI, HSS notifies original S-CSCF to nullify IMS user by the Cx-Deregister order, deletes user contracting data.S-CSCF originally receives the Cx-Deregister order that HSS sends, to nullify IMS user, discharge all sessions of this IMS user, if this S-CSCF has received the SIP request that I-CSCF sends before this, to send the BYE request this moment to I-CSCF, after I-CSCF receives the BYE request, can not transmit the BYE request.
Therefore, according to the present invention, if the S-CSCF of the processing IMS user unregistered service that HSS returns is because reasons such as equipment fault or communication disruption, do not return response, I-CSCF handles this IMS user's unregistered service according to other S-CSCF of the S-CSCF capability set gravity treatment of IMS customer requirements, if the S-CSCF of gravity treatment successfully handles this IMS user's unregistered service, can avoid the SIP request of Calling Side to fail because of overtime, called IMS user's unregistered service is avoided the contingent major defect that correct business can not be provided for this IMS user for a long time also with correct execution.
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (12)
1. method of calling out the user terminal of IP Multimedia System, it is characterized in that, comprise: interrogation-call session control function module I-CSCF receives an initial request for the called subscriber, to home subscriber server HSS inquiry called subscriber's registered location; The part identify label is in unregistered state and all identify labels are not in login state DIAMETER_SOME_ID_UNREGISTERED when the response of HSS comprises, or etc. during the indication of pending unregistered service DIAMETER_UNREGISTERED_SERVICE, I-CSCF shows as the agency of state, and I-CSCF sends Session initiation Protocol SIP request according to the response of HSS to service-call session control function module S-CSCF; And when S-CSCF does not respond, reselect another S-CSCF, send the SIP request to the S-CSCF that selects then.
2. the method for the user terminal of calling IP Multimedia System according to claim 1, it is characterized in that, described step I-CSCF further comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: when comprising the unified resource identifier URI of S-CSCF in the response of HSS, I-CSCF sends to this S-CSCF with the SIP request, so that asked by this S-CSCF treatment S IP.
3. the method for the user terminal of calling IP Multimedia System according to claim 2, it is characterized in that, the step of reselecting S-CSCF comprises: I-CSCF obtains the desired S-CSCF capability set of this user terminal, and selects a S-CSCF according to the S-CSCF capability set.
4. the method for the user terminal of calling IP Multimedia System according to claim 3, it is characterized in that described I-CSCF obtains the desired S-CSCF capability set of this user terminal and comprises: obtain the desired S-CSCF capability set of this user terminal by revising order Cx-Location-Query or Cx-Select-Pull;
Described modification Cx-Location-Query order is meant increases customer location query type AVP (User-Location-Type AVP) parameter in this order;
Described modification Cx-Select-Pull is meant and is revised as the proprietary sign of the internet protocol multi-media of this order IMPI with good conditionsi.
5. the method for the user terminal of calling IP Multimedia System according to claim 1, it is characterized in that, described step I-CSCF sends Session initiation Protocol SIP request according to the response of HSS to service-call session control function module S-CSCF and further comprises: when comprising the desired S-CSCF capability set of this user terminal in the response of HSS, I-CSCF selects a S-CSCF according to the desired S-CSCF capability set of this user terminal, then the S-CSCF of selection is issued in the SIP request, so that ask by this S-CSCF treatment S IP.
6. the method for the user terminal of calling IP Multimedia System according to claim 5, it is characterized in that described step I-CSCF also comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: I-CSCF preserves the desired S-CSCF capability set of this user terminal that HSS returns.
7. according to the method for the user terminal of claim 5 or 6 described calling IP Multimedia System, it is characterized in that the step of reselecting S-CSCF comprises: I-CSCF selects a S-CSCF according to the desired S-CSCF capability set of this user terminal.
8. according to the method for the user terminal of claim 3 or 4 described calling IP Multimedia System, it is characterized in that, described step I-CSCF further comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: the URI that does not promptly comprise S-CSCF in the response of HSS, when also not comprising the desired S-CSCF capability set of user terminal, the optional S-CSCF of I-CSCF is so that issue this S-CSCF with the SIP request.
9. the method for the user terminal of calling IP Multimedia System according to claim 8 is characterized in that, the step of reselecting S-CSCF comprises: the optional S-CSCF of I-CSCF is so that issue this S-CSCF with the SIP request.
10. the method for the user terminal of calling IP Multimedia System according to claim 2, it is characterized in that described step I-CSCF further comprises to service-call session control function module S-CSCF transmission Session initiation Protocol SIP request according to the response of HSS: also comprise the desired S-CSCF capability set of user terminal at HSS in the response that I-CSCF returns.
11. the method for the user terminal of calling IP Multimedia System according to claim 10, it is characterized in that, the step of reselecting S-CSCF comprises: I-CSCF selects a S-CSCF according to the desired S-CSCF capability set of this user terminal, then the S-CSCF of selection is issued in the SIP request, so that ask by this S-CSCF treatment S IP.
12. according to claim 3 or 4 or 5 or the method for the user terminal of 6 or 11 described calling IP Multimedia System, it is characterized in that, when I-CSCF can not select a S-CSCF according to the desired S-CSCF capability set of this user terminal, I-CSCF returns 600 responses to user terminal, after this, if I-CSCF receives the sip response that S-CSCF returns, no longer transmit this sip response.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101182544A CN1881975B (en) | 2005-09-05 | 2005-10-21 | Method for calling user terminal of IP multimedia subsystem |
| PCT/CN2006/002244 WO2007025480A1 (en) | 2005-08-31 | 2006-08-31 | Method of session processing in an ims and interrogating-call state control function |
| AT06775561T ATE452484T1 (en) | 2005-08-31 | 2006-08-31 | METHOD FOR SESSION PROCESSING IN AN IMS AND A CALL STATUS REQUEST CONTROL FUNCTION |
| EP06775561A EP1921796B1 (en) | 2005-08-31 | 2006-08-31 | Method of session processing in an ims and interrogating-call state control function |
| DE602006011182T DE602006011182D1 (en) | 2005-08-31 | 2006-08-31 | METHOD FOR SESSION PROCESSING IN AN IMS AND A CALL STATE INSPECTION CONTROL FUNCTION |
| US12/040,571 US8295158B2 (en) | 2005-08-31 | 2008-02-29 | Method of session processing in an IMS and interrogating-call state control function |
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| CN200510099742 | 2005-09-05 | ||
| CN200510099742.5 | 2005-09-05 | ||
| CN2005101182544A CN1881975B (en) | 2005-09-05 | 2005-10-21 | Method for calling user terminal of IP multimedia subsystem |
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| CN1881975A CN1881975A (en) | 2006-12-20 |
| CN1881975B true CN1881975B (en) | 2010-10-13 |
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| CN101132407B (en) * | 2007-08-13 | 2013-11-06 | 中兴通讯股份有限公司 | Method for processing exception caused by re-selection service call conversation control function |
| CN101217407B (en) * | 2008-01-04 | 2012-12-19 | 中兴通讯股份有限公司 | A processing method on functional failure on calling conversation control agent |
| CN101448243B (en) * | 2008-04-11 | 2011-09-21 | 中兴通讯股份有限公司 | Method for realizing user registration |
| CN101478737B (en) * | 2008-12-30 | 2010-10-27 | 华为技术有限公司 | Method, apparatus and system for service migration |
| CN102739499B (en) * | 2011-03-31 | 2015-08-19 | 中国移动通信集团公司 | A kind of method for routing of signaling message, Apparatus and system |
| CN115022878B (en) * | 2022-08-08 | 2022-11-11 | 中国电子科技集团公司第三十研究所 | Method, apparatus and medium for takeover of selected VoLTE user |
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