WO2009092313A1 - 一种为用户提供业务的方法和装置 - Google Patents

一种为用户提供业务的方法和装置 Download PDF

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Publication number
WO2009092313A1
WO2009092313A1 PCT/CN2009/070125 CN2009070125W WO2009092313A1 WO 2009092313 A1 WO2009092313 A1 WO 2009092313A1 CN 2009070125 W CN2009070125 W CN 2009070125W WO 2009092313 A1 WO2009092313 A1 WO 2009092313A1
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WO
WIPO (PCT)
Prior art keywords
cscf
user
hss
service
request
Prior art date
Application number
PCT/CN2009/070125
Other languages
English (en)
French (fr)
Inventor
Shufeng Shi
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP20090704310 priority Critical patent/EP2234364B1/en
Priority to JP2010542504A priority patent/JP4870841B2/ja
Publication of WO2009092313A1 publication Critical patent/WO2009092313A1/zh
Priority to US12/837,773 priority patent/US8379650B2/en
Priority to US13/087,043 priority patent/US8031591B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/51Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066Session management
    • H04L65/1073Registration or de-registration
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/24Negotiation of communication capabilities
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and apparatus for providing services to users. Background technique
  • IMS IP Multimedia Subsystem, IP, Multimedia Subsystem
  • IP IP Multimedia Subsystem
  • Multimedia Subsystem IP Multimedia Subsystem
  • the user identities used in the IMS network mainly include IMPI (IP Multimedia Private User Identity) and IMPU (IP Multimedia Public User Identity). These user identities are stored in HSS by signing. (Home Subscriber Server, Home Subscriber Server), when the user performs related business operations, related entities in the network such as I-CSCF (Interrogating Call Session Control Function), S-CSCF (Serving) Call Session Control Function, AS (Application Server, Application Server), etc., obtain the subscription data of the relevant user through the user identity to the HSS.
  • I-CSCF Interrogating Call Session Control Function
  • S-CSCF Server
  • AS Application Server, Application Server
  • An IMS Subscription contains a contracted user who may be connected at Cx All the contract information passed on the mouth, which can contain multiple IMPIs, but one IMPI can only belong to one IMS Subscription;
  • An IMPI can contain multiple IMPUs, and an IMPU can be shared by multiple IMPIs;
  • IMS Subscription and IMPI are one-to-many relationships
  • IMPI and IMPU are many-to-many relationships.
  • the UE User Equipment
  • the UE can register with the network to use various services provided by the IMS network.
  • the UE can choose to subscribe to the unregistered service.
  • the network can still provide the user with unregistered services such as incoming call forwarding, incoming call records, and the like.
  • the I-CSCF provides services for the user by selecting different S-CSCFs, the second one.
  • the S-CSCF requests the user to receive the failure response of the HSS when the service data is not registered, and cannot provide the user with the unregistered service;
  • the I-CSCF provides services for the user to select different S-CSCFs.
  • the HSS saves the name of the S-CSCF1 when the S-CSCF1 selected in the first terminal registration procedure sends a MAR (Multimedia Authenticate Request) request authentication data to the HSS.
  • MAR Multimedia Authenticate Request
  • the HSS saves the S-CSCF2 name, and the S is -CSCF1 name is overwritten.
  • the subsequent registration message of the first terminal will be routed to the S-CSCF2. At this time, since the S-CSCF2 has no user information, the first terminal registration failure will be caused. Summary of the invention
  • Embodiments of the present invention provide a method and apparatus for providing a service for a user, so that when a plurality of identities of a user occur simultaneously with an unregistered service, or a registration request occurs simultaneously with an unregistered service, or when a registration request occurs at the same time, the network can Normally provide services to users.
  • an embodiment of the present invention provides a method for providing a service to a user, including: a negotiated call session control function I-CSCF selects a first S-CSCF for a user, and forwards a service request to the first S.
  • the I-CSCF Receiving, by the CSCF, a failure response returned by the first S-CSCF; the I-CSCF acquiring information of the second S-CSCF, and forwarding the service request of the user to the second S-CSCF, where the The second S-CSCF is the S-CSCF that the HSS is currently recording for the user.
  • the embodiment of the present invention further provides an apparatus for providing a service to a user, where the apparatus includes: a response receiving module, configured to select a first S-CSCF for a user, and forward the service request to the first S- After the CSCF, receiving the failure response returned by the first S-CSCF; the second S-CSCF obtaining module, configured to acquire the information of the second S-CSCF after receiving the failure response returned by the first S-CSCF, where The second S-CSCF is an S-CSCF that is currently recorded by the user, and the request forwarding module is configured to forward the service request of the user to the second S- after acquiring the information of the second S-CSCF.
  • a response receiving module configured to select a first S-CSCF for a user, and forward the service request to the first S- After the CSCF, receiving the failure response returned by the first S-CSCF
  • the second S-CSCF obtaining module configured to acquire the information of the second S-CSCF after receiving the failure response returned by the first S-CSCF, where
  • the embodiment of the present invention further provides a method for providing a service for a user, including: the home subscriber subscription server HSS receives a service call session control function that is sent by the negotiation call session control function I-CSCF to provide a service for the user. After the CSCF capability set or the second request message of the name of the S-CSCF, it is determined whether the selection of the previous S-CSCF performed by the user has ended, or has expired, and if so, the HSS will be S- The capability set or name of the CSCF is returned to the I-CSCF.
  • an embodiment of the present invention further provides a device for providing a service for a user, where
  • the capability set request receiving module is configured to receive a second request message of a capability set or a name of a service call session control function S-CSCF that is sent by the negotiated call session control function I-CSCF to provide a service to the user; For returning the capability set or name of the S-CSCF to the I-CSCF when it is determined that the selection of the previous S-CSCF for the user has ended or has timed out.
  • the embodiment of the invention has at least the following advantages:
  • the I-CSCF forwards the user's service request to the correct S-
  • the CSCF performs processing, so that in the above three situations, the network can normally provide services for users.
  • FIG. 1 is a flowchart of a method for providing a service to a user according to an embodiment of the present invention
  • FIG. 2 is a flowchart of Embodiment 1 of a method for providing a service for a user according to the present invention
  • FIG. 4 is a flowchart of Embodiment 3 of a method for providing a service to a user according to the present invention
  • FIG. 5 is a structural diagram of Embodiment 1 of an apparatus for providing a service to a user according to an embodiment of the present invention
  • FIG. 7 is a flowchart of Embodiment 4 of a method for providing a service for a user according to the present invention
  • FIG. 8 is a flowchart of Embodiment 5 of a method for providing a service for a user according to the present invention
  • the embodiment of the present invention provides a method for providing a service for a user.
  • the S-CSCF requests the user to subscribe to the data
  • FIG. 1 it is a flowchart of a method for providing a service to a user according to an embodiment of the present invention. Specifically, the following steps are included:
  • Step S101 Receive, according to the capability set of the serving call session control function S-CSCF returned by the HSS, the user to select the first S-CSCF and forward the service request to the first S-CSCF, and receive the first S-CSCF to return. The failure response.
  • the first S-CSCF Before the first S-CSCF returns a failure response to the I-CSCF, the first S-CSCF receives the service request of the user forwarded by the I-CSCF, and requests the HSS for the subscription data of the user, where the first S-CSCF is I- The CSCF is selected based on the capability set of the S-CSCF returned by the HSS.
  • the first S-CSCF When the first S-CSCF requests the HSS for the subscription data of the user, if the HSS finds that the name of the first S-CSCF does not match the name of the existing S-CSCF allocated to the user, then the first S-CSCF is sent to the first S-CSCF. Returning the failure indication information indicating that another S-CSCF different from the first S-CSCF is allocated to the user, and then the first S-CSCF may send the failure indication information returned by the HSS to the I-CSCF. Send a failure response.
  • Step S102 The I-CSCF acquires information of the second S-CSCF, and the I-CSCF obtains information of the second S-CSCF by requesting the name or capability set of the S-CSCF from the HSS again. After the I-CSCF receives the failure response, the I-CSCF requests the HSS for the name or capability set of the S-CSCF again.
  • the I-CSCF may request the name or capability set of the S-CSCF from the HSS again when the failure response carries an indication that the other S-CSCF that is different from the first S-CSCF is assigned to the user.
  • Step S103 The I-CSCF forwards the service request of the user to the second S-CSCF according to the name of the second S-CSCF returned by the HSS. After the I-CSCF forwards the service request of the user to the second S-CSCF, the second S-CSCF requests the HSS for the subscription data of the user, and then processes the service request of the user according to the subscription data of the user returned by the HSS. .
  • the HSS may set a The S-CSCF selection flag is also set, and a timer can be set and started.
  • Received I-CSCF at HSS After the user selects the S-CSCF request message, for example: SAR or MAR message, and saves the name of the S-CSCF or the timer expires, the HSS clears the flag and timer that is being selected by the S-CSCF.
  • the HSS receives the I-CSCF or other I-CSCF different from the I-CSCF to request the S-CSCF capability set or name for the same user.
  • Request message if the tag currently being selected by the S-CSCF exists, the HSS will not immediately return the capability set of the S-CSCF to the I-CSCF, but after saving the name of the S-CSCF or the timer expires, The name of the S-CSCF is returned to the I-CSCF.
  • the HSS receives the request S-CSCF capability set or name for the same user sent by the I-CSCF or other I-CSCF different from the I-CSCF.
  • Request message the HSS may return an error response message to the I-CSCF or other I-CSCF different from the I-CSCF to notify the I-CSCF or other I-CSCF different from the I-CSCF that the HSS is Make an S-CSCF selection; or,
  • the I-CSCF or other I-CSCF different from the I-CSCF waits for a predetermined time to send a request message requesting the S-CSCF capability set or name to the HSS again; or the I-CSCF is different from the I-CSCF
  • the other I-CSCF instructs the originating service requester to wait for a predetermined time to initiate the service request again.
  • Embodiment 1 it is a flowchart of Embodiment 1 of a method for providing a service for a user in the first embodiment.
  • the user is not registered in the network and the name of the S-CSCF serving the user is not stored in the HSS.
  • the I-CSCF receives the failed response of the selected S-CSCF providing the unregistered service to the user, again The name of the S-CSCF is requested from the HSS, so that the user can be provided with unregistered services to avoid call loss.
  • Step S201 The I-CSCF receives the final request of the user or the AS replaces the originating service request initiated by the user.
  • Step S202 the I-CSCF requests the name or capability set of the S-CSCF from the HSS through the LIR (Location Information Request).
  • Step S203 if the user has an unregistered state service or indicates that it is an originating request, the HSS returns a capability set of the S-CSCF to the I-CSCF through a LIA (Location Information Answer).
  • LIA LiA
  • Step S204 the I-CSCF selects the S-CSCF1 to provide a service for the user, and forwards the service request to the S-CSCF1;
  • Step S205 The user initiates a registration request before the HSS processes the SAR (Server Assignment Request) service data request of the S-CSCF1.
  • the SAR service data request causes the HSS to store the name of the S-CSCF1, and the user may be another user identity under the same IMS Subscription;
  • Step S206 the I-CSCF receives the registration message of the user terminal.
  • Step S207 The I-CSCF requests a capability set of the S-CSCF from the HSS through a UAR (User Authorization Request).
  • UAR User Authorization Request
  • Step S208 the HSS returns the capability set of the S-CSCF to the I-CSCF through a UAA (User Authorization Answer).
  • UAA User Authorization Answer
  • Step S209 the I-CSCF selects the S-CSCF2 to provide a service for the user, and forwards the registration request to the S-CSCF2;
  • Step S210 the S-CSCF2 sends a MAR message to request the authentication data from the HSS.
  • MAA Multimedia Authentication Answer
  • the S-CSCF1 has sent the SAR service data request to request the user data from the HSS and the HSS has saved the name of the S-CSCF1, the name of the S-CSCF1 will be rewritten as S-CSCF2, and the HSS may initiate to the S-CSCF1.
  • the network logout request releases the session established by S-CSCF1.
  • Step S212 the S-CSCF1 sends a SAR service data request to request the user data from the HSS.
  • Step S213 the HSS finds that the S-CSCF2 has been saved, and the S-CSCF2 is inconsistent with the name of the S-CSCF1 that sends the request, and will be in the SAA (Server Assignment Answer, Return failure indication message in server allocation reply)
  • SAA Server Assignment Answer, Return failure indication message in server allocation reply
  • Step S214 the S-CSCF1 replies with a failure response to the I-CSCF, indicating that the unregistered service cannot be provided to the user;
  • Step S215 The I-CSCF receives the failure response of the S-CSCF1, and sends the LIR request to the HSS again to request the name or capability set of the S-CSCF.
  • the I-CSCF may choose to send the LIR to the HSS again when the failure response returned by the S-CSCF1 explicitly indicates that another S-CSCF has been assigned to the user.
  • Step S216 the HSS carries the name of the S-CSCF2 in the LIA;
  • Step S217 the I-CSCF forwards the service request to the S-CSCF2 for processing;
  • Step S218, the S-CSCF2 sends the SAR service data request to request the user to sign the data to the HSS;
  • Step S219 The HSS returns the SAA to carry the user subscription data to the S-CSCF2.
  • step S220 the S-CSCF2 processes the service normally.
  • Embodiment 2 it is a flowchart of Embodiment 2 of a method for providing services for a user in the present invention.
  • the user is not registered in the network and the name of the S-CSCF serving the user is not stored in the HSS.
  • the S-CSCF is requested again from the HSS.
  • the name so that the user can normally provide unregistered business, avoiding call loss.
  • Step S301 The I-CSCF receives the initial service request initiated by the user or the AS instead of the user.
  • Step S302 the I-CSCF requests the HSS for the name or capability set of the S-CSCF.
  • Step S303 If the user has an unregistered service or indicates an origination request, the HSS returns the capability set of the S-CSCF to the I-CSCF. ;
  • Step S304 the I-CSCF selects the service provided by the S-CSCF1 for the user, and forwards the request to the S-CSCF1;
  • Step S305 Before the HSS processes the SAR service data request of the S-CSCF1, The I-CSCF in turn receives the user's final request or the AS instead of the user initiated originating service request.
  • the SAR service data request causes the HSS to store the name of the S-CSCF1, and the user may be another user identity under the same IMS Subscription;
  • Step S306 the I-CSCF requests the name or capability set of the S-CSCF from the HSS; Step S307, the HSS returns the capability set of the S-CSCF to the I-CSCF;
  • Step S308 the I-CSCF selects the service provided by the S-CSCF2 for the user, and forwards the request to the S-CSCF2;
  • Step S309 the S-CSCF2 sends a SAR service data request to request the contract data from the HSS.
  • Step S310 if the S-CSCF1 has not sent the SAR service data request to request the user data to the HSS, the HSS has not saved the name of the S-CSCF1, the HSS stores the name of the S-CSCF2, and returns the user subscription data to the S-CSCF2 through the SAA; Or,
  • the HSS will return the failure DIAMETER_ERROR_IDENTITY_ALREADY_REGISTERED to the S-CSCF2 in the SAA, after which the S-CSCF2 replies with a failure response to the I. -CSCF, indicating that the user is not able to provide unregistered services.
  • the I-CSCF subsequent processing is basically the same as S314, but only for the failure response of S-CSCF2.
  • Step S311 The S-CSCF1 sends a SAR service data request to request the user to sign the data to the HSS.
  • Step S312 the HSS finds that the S-CSCF2 has been saved, and the S-CSCF2 is inconsistent with the S-CSCF1 name of the request data, and the failure indication information DIAMETER_E OR_IDENTITY_ALREADY_REGISTERED is returned to the S-CSCF1 in the SAA;
  • Step S313 the S-CSCF1 replies with a failure response to the I-CSCF, indicating that the unregistered service cannot be provided to the user;
  • Step S314 the I-CSCF receives the failure response of the S-CSCF1, and sends the LIR request to the HSS again to request the name or capability set of the S-CSCF.
  • the I-CSCF can choose to indicate the failure response returned in S-CSCF1.
  • the LIR is sent to the HSS again when another S-CSCF is assigned to the user.
  • Step S315 the HSS carries the name of the S-CSCF2 in the LIA;
  • Step S316 the I-CSCF forwards the service request to the S-CSCF2 for processing;
  • Step S317 the S-CSCF2 sends the SAR service data request to request the user to sign the data to the HSS;
  • Step S318 the HSS returns the SAA to carry the user subscription data to the S-CSCF2, and then the S-CSCF2 processes the service normally.
  • the foregoing method for providing a service to a user enables the network to provide a corresponding service to the user when a plurality of unregistered services occur simultaneously or a registration request occurs at the same time as the unregistered service occurs.
  • FIG. 4 it is a flowchart of Embodiment 3 of a method for providing a service for a user according to the present invention.
  • the HSS receives the first request message of the capability set of the I-CSCF requesting the S-CSCF and is in the first
  • a flag for the S-CSCF selection may be set in the HSS, and a timer may be started at the same time.
  • the HSS clears the flag and timer when the HSS receives the SAR service data request or MAR message for the S-CSCF selected by the user and saves the name of the S-CSCF or the timer expires. If the HSS receives the second request message from the I-CSCF requesting the S-CSCF's capability set before the HSS saves the S-CSCF name, the HSS will not return immediately if the tag exists. LIA. After the HSS receives the SAR service data request or MAR message of the S-CSCF selected by the I-CSCF for the user and saves the name of the S-CSCF, the name of the S-CSCF is returned to the I-CSCF through the LIA to resolve the possibility.
  • the HSS may also choose to return a specific error code to the I-CSCF, indicating that the S-CSCF is being selected, and the I-CSCF may wait for a certain period of time. Sending the request message requesting the capability set of the S-CSCF again, or directly returning the error to the service initiator, instructing the service initiator to wait A business request is initiated again after a certain period of time.
  • the error code may further carry an expected completion time of the previous S-CSCF selection performed by the user or a time to indicate that the request is re-initiated, after the I-CSCF receives the error response, according to the And an expected completion time of the previous S-CSCF selection performed by the user or a time to indicate that the request is re-initiated, and wait for a predetermined time to send a request message requesting the S-CSCF capability set or name to the HSS again; or The I-CSCF instructs the user to initiate a service request again after waiting for a predetermined time.
  • the user is not registered in the network and the name of the S-CSCF that is provided for the user is not stored in the HSS.
  • the HSS can provide the registration service for the user to avoid the call loss by setting the marking of the S-CSCF selection. Specifically, the following steps are included:
  • Step S401 the I-CSCF receives the registration request of the user (IMPU1, IMPI1); Step S402, the I-CSCF sends a UAR to the HSS to perform an authorization check and sends a first request message requesting the name or capability set of the S-CSCF;
  • Step S403 the HSS sets a flag for S-CSCF selection, and can start a timer at the same time, and returns the capability set of the S-CSCF to the I-CSCF through the UAA;
  • Step S404 the I-CSCF receives the user again (IMPU2) , IMPI2) registration request;
  • Step S405 The I-CSCF sends a UAR to the HSS for authorization check and requests the name or capability set of the S-CSCF. If the HSS finds that the flag being selected by the S-CSCF is set, the HSS does not immediately return to the LIA.
  • Step S406 the I-CSCF selects the S-CSCF1 to provide services for IMPU1 and IMPI1, and forwards the registration requests of IMPU1 and IMPI1 to the S-CSCF1;
  • Step S407 The S-CSCF1 sends an MAR message to the HSS to request authentication data of IMPI1 and IMPU1.
  • Step S408 the HSS saves the name of the S-CSCF1 and returns the authentication data to the S-CSCF1 through the MAA message;
  • Step S409 the HSS returns the name of the S-CSCF1 to the I-CSCF through the UAA;
  • Step S410 the S-CSCF1 initiates a 401 authentication challenge to the IMPI1 and the IMPU1 through the I-CSCF and the P-CSCF;
  • Step S411 the I-CSCF forwards the registration request of the IMPU2 and the IMPI2 to the S-CSCF1;
  • Step S412 the S-CSCF1 sends the MAR to the HSS to request the authentication data of the IMPI2 and the IMPU2;
  • Step S414 the S-CSCF1 initiates a 401 authentication challenge to the IMPI2 and the IMPU2 through the I-CSCF and the P-CSCF;
  • Step S415 the I-CSCF receives a second registration request of the user (IMPU1, IMPI1);
  • Step S416 the I-CSCF sends a UAR to the HSS for authorization check and requests the name or capability set of the S-CSCF.
  • Step S417 the HSS returns the name of the S-CSCF1 to the I-CSCF through the UAA;
  • Step S418, the I-CSCF forwards the registration request of the IMPU1 and the IMPI1 to the S-CSCF1;
  • Step S419, the I-CSCF receives the user (IMPU2, IMPI2) Second registration request;
  • Step S420 the I-CSCF sends a UAR to the HSS for authorization check and requests the name or capability set of the S-CSCF.
  • Step S421 the HSS returns the name of the S-CSCF1 to the I-CSCF through the UAA; Step S422, the 1-CSCF forwards the registration request of the IMPU2 and the IMPI2 to the S-CSCF1; Step S423, the normal registration process.
  • a flowchart of Embodiment 4 of providing services for a user according to an embodiment of the present invention includes the following steps:
  • Step S701 Receive, according to the capability set of the serving call session control function S-CSCF returned by the HSS, the user to select the first S-CSCF and forward the service request to the first S-CSCF, and receive the first S-CSCF to return. Failure response, the failure response carrying the name of the second S-CSCF.
  • the first S-CSCF Before the first S-CSCF returns a failure response to the I-CSCF, the first S-CSCF is connected. Receiving the service request of the user forwarded by the I-CSCF, and requesting the subscription data of the user from the HSS, the first S-CSCF is selected by the I-CSCF according to the capability set of the S-CSCF returned by the HSS.
  • the first S-CSCF When the first S-CSCF requests the HSS for the subscription data of the user, if the HSS finds that the name of the first S-CSCF does not match the name of the existing S-CSCF allocated to the user, then the first S-CSCF is sent to the first S-CSCF. Returning the failure indication information indicating that another S-CSCF different from the first S-CSCF is allocated to the user, and then the first S-CSCF may send the failure indication information returned by the HSS to the I-CSCF. Send a failure response carrying the name of the second S-CSCF.
  • Step S702 the I-CSCF obtains information of the second S-CSCF from the failure response, that is, the I-CSCF according to the second S-CSCF carried in the failure response returned by the first S-CSCF.
  • the name forwards the user's service request to the second S-CSCF.
  • the second S-CSCF After the I-CSCF forwards the service request of the user to the second S-CSCF, the second S-CSCF requests the HSS for the subscription data of the user, and then processes the service request of the user according to the subscription data of the user returned by the HSS. .
  • Embodiment 5 a flowchart of Embodiment 5 of a method for providing a service for a user according to the present invention.
  • the user is not registered in the network, and the name of the S-CSCF serving the user is not stored in the HSS.
  • the I-CSCF receives the selected failure response of the S-CSCF that provides the unregistered service for the user, the The name of the S-CSCF currently serving the user carried in the failure response sends a service request to the S-CSCF, so that the user can be provided with unregistered services to avoid call loss.
  • the following steps are included:
  • Step S801 The I-CSCF receives the terminal request of the user or the AS initiates an initial service request initiated by the user.
  • Step S802 The I-CSCF requests the HSS for the name or capability set of the S-CSCF by using an LIR (Location Information Request).
  • LIR Location Information Request
  • Step S803 if the user has an unregistered state service or indicates that it is an originating request, the HSS returns a capability set of the S-CSCF to the I-CSCF through a LIA (Location Information Answer).
  • Step S804 the I-CSCF selects the S-CSCF1 to provide a service for the user, and forwards the service request to the S-CSCF1;
  • Step S805 The user initiates a registration request before the HSS processes the SAR (Server Assignment Request) service data request of the S-CSCF1.
  • the SAR service data request causes the HSS to store the name of the S-CSCF1, and the user may be another user identity under the same IMS Subscription;
  • Step S806 the I-CSCF receives the registration message of the user terminal.
  • Step S807 the I-CSCF requests the HSS for the capability set of the S-CSCF by using a UAR (User Authorization Request).
  • UAR User Authorization Request
  • Step S808 The HSS returns the capability set of the S-CSCF to the I-CSCF through a UAA (User Authorization Answer).
  • UAA User Authorization Answer
  • Step S809 the I-CSCF selects the S-CSCF2 to provide a service for the user, and forwards the registration request to the S-CSCF2;
  • Step S810 the S-CSCF2 sends a MAR message to request the authentication data from the HSS.
  • Step S811 if the S-CSCF1 has not sent the SAR service data request to request the user data from the HSS, the HSS has not saved the name of the S-CSCF1, and the HSS stores the S- The name of the CSCF2, and return the user authentication data to the S-CSCF2 through the MAA (Multimedia Authentication Answer) message; or
  • MAA Multimedia Authentication Answer
  • the S-CSCF1 has sent the SAR service data request to request the user data from the HSS and the HSS has saved the name of the S-CSCF1, the name of the S-CSCF1 will be rewritten as S-CSCF2, and the HSS may initiate to the S-CSCF1.
  • the network logout request releases the session established by S-CSCF1.
  • Step S812 the S-CSCF1 sends a SAR service data request to request the user data from the HSS;
  • Step S813 the HSS finds that the S-CSCF2 has been saved, and the S-CSCF2 is inconsistent with the name of the S-CSCF1 requesting the data, and will return a failure indication message DIAMETER_E OR_IDENTITY_ALREADY_REGISTERED to the S- in the SAA (Server Assignment Answer).
  • CSCF1 carrying the name of S-CSCF2 at the same time;
  • Step S814 the S-CSCF1 replies with a failure response to the I-CSCF, indicating that the unregistered service cannot be provided to the user, and the information of the S-CSCF2 is carried;
  • Step S815 the I-CSCF receives the failure response of the S-CSCF1, and transfers the service request to the S-CSCF2 according to the information of the S-CSCF2;
  • Step S817 the HSS returns the SAA carrying the user subscription data to the S-CSCF2;
  • the foregoing method for providing a service to a user not only occurs when multiple unregistered services occur simultaneously in multiple identities of the user, but also when the registration request is made while requesting the unregistered service, the network can normally provide the corresponding service to the user, and When multiple users are simultaneously registered, the problem of assigning multiple S-CSCFs to one user can still be solved, and the service is normally provided for the user.
  • FIG. 5 it is a structural diagram of an apparatus for providing a service to a user according to an embodiment of the present invention, where the apparatus is configured to select a first S-CSCF and forward a service request to a user according to a capability set of an S-CSCF returned by the HSS.
  • an S-CSCF entity receives the failure response returned by the first S-CSCF entity, requests the name or capability set of the S-CSCF from the HSS entity again, and forwards the service request of the user to the second S-CSCF entity.
  • the device can be an I-CSCF entity.
  • the device for providing services to the user includes: a response receiving module 51, configured to receive a failure response returned by the first S-CSCF entity;
  • a second S-CSCF information requesting module 52 configured to request the name or capability set of the S-CSCF from the HSS entity again;
  • the request forwarding module 53 is configured to forward the service request of the user to the second S-CSCF entity according to the information of the second S-CSCF returned by the HSS entity.
  • the response receiving module 51 is further configured to receive a failure response carrying the failure indication information, where the failure indication information indicates that the HSS entity has another S-CSCF entity different from the first S-CSCF entity and is allocated to the user;
  • the second S-CSCF information requesting module 52 is further configured to be connected to the response receiving module 51.
  • the received failure response carries the failure indication information assigned to the user by another S-CSCF entity different from the first S-CSCF entity, the name or capability set of the S-CSCF is requested again from the HSS entity.
  • the device for providing a service to the user further includes: a second S-CSCF determining module 54, configured to determine, according to the name or capability set of the second S-CSCF entity acquired by the second S-CSCF information requesting module 52, the second S- CSCF entity.
  • a structure diagram of an HSS entity includes: a capability set request receiving module 61, and a capability set for receiving an S-CSCF that is sent by an I-CSCF to provide a service for a second identity of a user. And a request message for receiving a capability set of the S-CSCF or a name of the S-CSCF requesting service for the first identity of the user, and returning a capability set of the S-CSCF serving the first identity of the user or The name of the S-CSCF.
  • the information returning module 62 is configured to: when the HSS determines that the selection of the S-CSCF has ended or the previous selection of the S-CSCF has timed out, return the capability set or name of the S-CSCF to the I-CSCF, where The selection of the previous S-CSCF refers to the selection of the S-CSCF for the first identity of the user.
  • the HSS entity further includes: a setting module 63, configured to: after the capability set request receiving module 61 receives the capability set request of the S-CSCF that is sent by the I-CSCF to provide the first identity of the user, setting the S-CSCF in progress The tag selected by the entity, or set a timer and start timing.
  • a setting module 63 configured to: after the capability set request receiving module 61 receives the capability set request of the S-CSCF that is sent by the I-CSCF to provide the first identity of the user, setting the S-CSCF in progress The tag selected by the entity, or set a timer and start timing.
  • the HSS entity further includes: a flag clearing module 64, configured to clear the ongoing S-CSCF when the information returning module determines that the selection of the S-CSCF for the first identity of the user has ended or has timed out Select the tag or clear the timer.
  • a flag clearing module 64 configured to clear the ongoing S-CSCF when the information returning module determines that the selection of the S-CSCF for the first identity of the user has ended or has timed out Select the tag or clear the timer.
  • the HSS entity further includes: an error returning module 65, configured to: when the HSS determines that the previous selection of the S-CSCF is not completed or the previous selection of the S-CSCF does not time out, the HSS entity receives the I-CSCF entity again or After the other I-CSCF entity of the I-CSCF entity sends a request message for the same user requesting the S-CSCF capability set or name, to the I-CSCF entity or other I different from the I-CSCF entity - The CSCF entity returns an error response message to notify the I-CSCF entity or different from the The other I-CSCF entities of the I-CSCF entity are undergoing S-CSCF entity selection.
  • an error returning module 65 configured to: when the HSS determines that the previous selection of the S-CSCF is not completed or the previous selection of the S-CSCF does not time out, the HSS entity receives the I-CSCF entity again or After the other I-CSCF entity of the I-CSCF entity sends a request message for the same user requesting the S
  • FIG. 6 is a structural diagram of another embodiment of a device for providing services to a user according to an embodiment of the present invention, including:
  • a capability set request receiving module configured to receive a second call request message or a second request message of a name of a service call session control function S-CSCF sent by the I-CSCF;
  • the information returning module is configured to return the capability set or name of the S-CSCF to the I-CSCF when it is determined that the previous selection of the S-CSCF for the user has ended or has timed out.
  • the capability set request receiving module is further configured to: receive a first request message requesting a capability set or a name of an S-CSCF serving the user, and return a first request response that carries a capability set or a name of the S-CSCF Message.
  • the device further includes: a setting module, configured to: after the capability set request receiving module returns a first request response message carrying a capability set or a name of the S-CSCF, set a flag that is being selected by the S-CSCF entity, or set A timer starts counting.
  • a setting module configured to: after the capability set request receiving module returns a first request response message carrying a capability set or a name of the S-CSCF, set a flag that is being selected by the S-CSCF entity, or set A timer starts counting.
  • the device further includes: a flag clearing module, configured to: when the information returning module determines that the selection of the previous S-CSCF performed by the user has ended or has timed out, clearing the marking of the ongoing S-CSCF selection , or clear the timer.
  • a flag clearing module configured to: when the information returning module determines that the selection of the previous S-CSCF performed by the user has ended or has timed out, clearing the marking of the ongoing S-CSCF selection , or clear the timer.
  • the device further includes: an error returning module, configured to return an error response message to the I-CSCF when the information returning module determines that the selection of the previous S-CSCF performed by the user is not ended or not timed out, The error response message is used to notify the I-CSCF that the HSS is performing S-CSCF selection.
  • an error returning module configured to return an error response message to the I-CSCF when the information returning module determines that the selection of the previous S-CSCF performed by the user is not ended or not timed out, The error response message is used to notify the I-CSCF that the HSS is performing S-CSCF selection.
  • the I-CSCF entities that process user concurrent service requests in the above embodiments may be the same or different I-CSCF entities.
  • FIG. 9 is a structural diagram of an apparatus for providing a service to a user according to an embodiment of the present invention, where the apparatus includes:
  • the first S-CSCF obtaining module 91 is configured to request a capability set of the S-CSCF from the home subscriber subscription server HSS, and select a first S-CSCF for the user according to the capability set of the S-CSCF returned by the HSS, Transmitting a service request to the first S-CSCF;
  • the response receiving module 92 is configured to: after forwarding the service request to the first serving call session control function S-CSCF, receive a failure response returned by the first S-CSCF, where the failure response indicates that the HSS has Another S-CSCF different from the first S-CSCF is assigned to the user;
  • the second S-CSCF obtaining module 93 is configured to obtain information about the second S-CSCF after receiving the failure response returned by the first S-CSCF, where the second S-CSCF is the HSS is the current record of the user. S-CSCF;
  • the request forwarding module 94 is configured to forward the service request of the user to the second S-CSCF after acquiring the information of the second S-CSCF.
  • the device in the embodiment of the present invention is a negotiated call session control function I-CSCF.
  • the second S-CSCF obtaining module 93 is further configured to: after receiving the failure response returned by the first S-CSCF, request the name or capability set of the S-CSCF from the HSS again, and receive the HSS.
  • the response receiving module 92 is further configured to: receive a failure response that is returned by the first S-CSCF and carry the second S-CSCF name; and then the second S-CSCF obtaining module 93 is configured according to the received And returning, by the first S-CSCF, a failure response carrying the second S-CSCF name, and acquiring information of the second S-CSCF.
  • the I-CSCF when the user is not registered in the network and the name of the S-CSCF that provides the service for the user is not stored in the HSS, or when the user has not registered the final request or the AS replaces the unregistered origination request and registration initiated by the user.
  • the I-CSCF may request the name of the S-CSCF currently serving the user in the failure response or request the HSS again.
  • the name or capability set of the S-CSCF obtains the second S-CSCF, and sends a service request to the second S-CSCF, so that the user can be provided with unregistered services to avoid call loss.
  • the HSS when the HSS receives the request message of the capability set of the I-CSCF requesting the S-CSCF, if it is determined that the previous selection of the S-CSCF has not been completed, the HSS will not immediately return to the LIA.
  • the HSS received the SAR service data request or MAR message of the S-CSCF selected by the I-CSCF for the user and saved it. After the name of the S-CSCF, the name of the S-CSCF is returned to the I-CSCF through the LIA, which solves the problem that a user may simultaneously allocate two S-CSCFs to ensure that the user is normally provided with services.
  • the present invention can be implemented by hardware, or can be implemented by means of software plus necessary general hardware platform, and the technical solution of the present invention. It can be embodied in the form of a software product that can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc.) that performs the methods described in various embodiments of the present invention.
  • a non-volatile storage medium which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.
  • a computer device may It is a personal computer, a server, or a network device, etc.

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Description

一种为用户提供业务的方法和装置 本申请要求于 2008 年 1 月 18 日提交中国专利局, 申请号为 200810001412.1 , 发明名称为 "一种为用户提供业务的方法、 系统和 装置"和 2008年 3月 28日提交中国专利局,申请号为 200810090549.9, 发明名称为 "一种为用户提供业务的方法、 系统和装置" 的中国专利 申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及通信技术领域,特别涉及一种为用户提供业务 的方法和装置。 背景技术
随着通信领域的技术发展, IMS ( IP Multimedia Subsystem, IP, 多媒体子系统)将成为下一代固定和移动的核心网络, 将出现接入技 术和业务提供多样化, 承载 IP化, 核心网络统一到 IMS的发展趋势 和网络演进过程。 用户在 IMS网络中会得到更佳的业务体验。
目前 IMS 网络中使用的用户身份主要有 IMPI ( IP Multimedia Private User Identity, IP多媒体私有用户身份)和 IMPU( IP Multimedia Public User Identity , IP多媒体公有用户身份), 这些用户身份通过 签约的方式保存在 HSS ( Home Subscriber Server, 归属用户签约服务 器) 中, 当用户进行相关业务操作时, 网络中的相关实体如 I-CSCF ( Interrogating Call Session Control Function, 十办商呼叫会话控制功 能)、 S-CSCF ( Serving Call Session Control Function, 服务呼叫会话 控制功能)、 AS ( Application Server, 应用服务器)等通过用户身份 到 HSS来获取相关用户的签约数据。
IMS 中用户身份之间及用户身份和签约数据之间的关系比较复 杂, 其中:
一个 IMS Subscription (签约)包含了一个签约用户可能在 Cx接 口上传递的所有签约信息, 其下可以包含多个 IMPI, 但一个 IMPI只 能属于一个 IMS Subscription;
一个 IMPI可以包含多个 IMPU,—个 IMPU可以被多个 IMPI共 享;
也就是说, IMS Subscription和 IMPI是一对多的关系, IMPI和 IMPU是多对多的关系。
在 IMS网络中, UE ( User Equipment, 用户设备)在网络中注册 后即可使用 IMS网络提供的各种业务。 同时, UE可以选择签约未注 册业务, 当 UE没有在网络中注册时网络仍然可以为用户提供未注册 业务如来话前转、 来话记录等。
目前网络限定了一个 IMS Subscription下的所有用户身份将由同 一个 S-CSCF为其提供服务, 因此在下列应用场景中将会出现如下问 题:
( 1 ) 当用户同时有未注册终发请求或 AS代替用户发起的未注 册始发请求和注册请求时, I-CSCF 如果先后为用户选择了不同的 S-CSCF提供服务, 未注册请求业务将会失败;
( 2 ) 当用户同时有两个或多个未注册终发请求或 AS代替用户 发起的未注册始发请求时, I-CSCF 如果先后为用户选择了不同的 S-CSCF提供服务, 第二个 S-CSCF请求用户未注册业务数据时将会 收到 HSS的失败响应无法为用户提供未注册业务;
( 3 ) 当用户的多个终端同时注册时, I-CSCF如果先后为用户选 择了不同的 S-CSCF 提供服务。 在第一个终端注册流程中选择的 S-CSCF1向 HSS发送了 MAR ( Multimedia Authenticate Request, 多 媒体认证请求)请求鉴权数据时 HSS保存了 S-CSCF1的名字。 在第 一个终端的第二个注册消息到达 I-CSCF之前, 如果第二个终端注册 流程中选择的 S-CSCF2向 HSS发送 MAR请求鉴权数据, HSS会保 存 S-CSCF2名字, 而将 S-CSCF1名字覆盖掉。 第一个终端的后续注 册消息将路由到 S-CSCF2, 这时由于 S-CSCF2没有用户信息, 因此 将导致第一个终端注册失败。 发明内容
本发明实施例提供一种为用户提供业务的方法和装置,以实现当 用户的多个身份同时发生未注册业务,或发生未注册业务的同时发生 注册请求, 或同时发生注册请求时, 网络能够正常为用户提供业务。 为达到上述目的,本发明实施例一方面提供一种为用户提供业务 的方法, 包括: 协商呼叫会话控制功能 I-CSCF 为用户选择第一 S-CSCF 并将业务请求转给所述第一 S-CSCF之后, 接收所述第一 S-CSCF返回的失败响应; 所述 I-CSCF获取第二 S-CSCF的信息, 将 用户的业务请求转发给所述第二 S-CSCF, 其中所述第二 S-CSCF是 HSS为所述用户当前记录的 S-CSCF。 另一方面, 本发明实施例还提供一种为用户提供业务的装置, 所 述装置包括: 响应接收模块, 用于为用户选择第一 S-CSCF并将业务 请求转给所述第一 S-CSCF之后, 接收所述第一 S-CSCF返回的失败 响应; 第二 S-CSCF获取模块, 用于接收所述第一 S-CSCF返回的失 败响应之后,获取第二 S-CSCF的信息,其中所述第二 S-CSCF是 HSS 为所述用户当前记录的 S-CSCF; 请求转发模块, 用于在获取第二 S-CSCF的信息之后, 将用户的业务请求转发给所述第二 S-CSCF。
再一方面, 本发明实施例还提供一种为用户提供业务的方法, 包 括: 归属用户签约服务器 HSS接收协商呼叫会话控制功能 I-CSCF发 送的请求为用户提供服务的服务呼叫会话控制功能 S-CSCF的能力集 或 S-CSCF的名字的第二请求消息后, 判断对所述用户进行的前一次 S-CSCF的选择是否已结束, 或者是否已超时, 如果是, 则所述 HSS 将 S-CSCF的能力集或名字返回给所述 I-CSCF。 再一方面, 本发明实施例还提供一种为用户提供业务的装置, 包 括: 能力集请求接收模块, 用于接收协商呼叫会话控制功能 I-CSCF 发送的请求为用户提供服务的服务呼叫会话控制功能 S-CSCF的能力 集或名字的第二请求消息; 信息返回模块, 用于在确定对所述用户进 行的前一次 S-CSCF的选择已结束或者已超时时, 将 S-CSCF的能力 集或名字返回给所述 I-CSCF。
与现有技术相比, 本发明实施例至少具有以下优点:
通过本发明实施例, 当用户的多个身份同时发生未注册业务, 或 发生未注册业务的同时发生注册请求, 或同时发生注册请求时, I-CSCF将用户的业务请求转到正确的 S-CSCF进行处理, 从而实现 了在上述三种情形下, 网络均能正常为用户提供业务。 附图说明
图 1为本发明实施例为用户提供业务的方法的流程图; 图 2为本发明为用户提供业务的方法实施例一的流程图; 图 3为本发明为用户提供业务的方法实施例二的流程图; 图 4为本发明为用户提供业务的方法实施例三的流程图; 图 5为本发明实施例为用户提供业务的装置实施例一的结构图; 图 6为本发明实施例为用户提供业务的装置实施例二的结构图; 图 7为本发明为用户提供业务的方法实施例四的流程图; 图 8为本发明为用户提供业务的方法实施例五的流程图; 图 9为本发明实施例为用户提供业务的装置实施例三的结构图。 具体实施方式
本发明实施例提供一种为用户提供业务的方法,通过本发明实施 例, 当 S-CSCF请求用户签约数据时,在收到 HSS指示已为用户分配 了不同的 S-CSCF的错误码后,返回失败码给 I-CSCF, I-CSCF向 HSS 再次请求 S-CSCF 的名字, 并将业务请求转给已分配给用户的 S-CSCF, 从而可以为用户提供正常业务。
如图 1所示, 为本发明实施例为用户提供业务的方法的流程图, 具体包括以下步骤:
步骤 S101 , 根据 HSS返回的服务呼叫会话控制功能 S-CSCF的 能力集为用户选择第一 S-CSCF并将业务请求转给所述第一 S-CSCF 后, 接收所述第一 S-CSCF返回的失败响应。
在第一 S-CSCF向 I-CSCF返回失败响应之前, 第一 S-CSCF接 收 I-CSCF转发的用户的业务请求,并向 HSS请求该用户的签约数据, 该第一 S-CSCF是 I-CSCF根据 HSS返回的 S-CSCF的能力集选择的。
在第一 S-CSCF向 HSS请求该用户的签约数据时, 如果 HSS发 现该第一 S-CSCF的名字与已存的分配给该用户的 S-CSCF的名字不 符, 则向第一 S-CSCF返回失败指示信息, 该失败指示信息指示已有 不同于第一 S-CSCF 的另一 S-CSCF 分配给了该用户, 然后第一 S-CSCF可以根据该 HSS返回的失败指示信息向 I-CSCF发送失败响 应。
步骤 S102,所述 I-CSCF获取第二 S-CSCF的信息, I-CSCF通过 再次向 HSS请求 S-CSCF的名字或能力集获取第二 S-CSCF的信息。 在 I-CSCF接收到失败响应之后, I-CSCF再次向 HSS请求 S-CSCF 的名字或能力集。
I-CSCF 可以在失败响应携带已有不同于第一 S-CSCF 的另一 S-CSCF分配给了该用户的指示信息时, 再次向 HSS请求 S-CSCF的 名字或能力集。
步骤 S103, I-CSCF根据 HSS返回的第二 S-CSCF的名字将用户 的业务请求转发给第二 S-CSCF。 在 I-CSCF将用户的业务请求转发 给第二 S-CSCF之后, 第二 S-CSCF会向 HSS请求用户的签约数据, 然后根据 HSS返回的该用户的签约数据, 正常处理该用户的业务请 求。
另外, 当用户的多个身份同时发生未注册业务, 或发生未注册业 务的同时发生注册请求, 或同时发生注册时, 在向 I-CSCF 返回 S-CSCF的能力集之后, HSS可以设置一个正在进行 S-CSCF选择的 标记, 同时还可以设置并启动一个定时器。 在 HSS接收到 I-CSCF为 用户选择的 S-CSCF的请求消息, 例如: SAR或 MAR消息, 并保存 了该 S-CSCF的名字或定时器超时之后, HSS清除该正在进行 S-CSCF 选择的标记和定时器。如果在 HSS设置了正在进行 S-CSCF选择的标 记之后, HSS又收到 I-CSCF或不同于该 I-CSCF的其它 I-CSCF发送 的针对同一个用户的请求 S-CSCF能力集或名字的请求消息, 如果这 时正在进行 S-CSCF选择的标记存在, HSS将不立即向 I-CSCF返回 S-CSCF的能力集, 而是在保存了 S-CSCF的名字或定时器超时之后, 再将 S-CSCF的名字返回给 I-CSCF。
如果在 HSS设置了正在进行 S-CSCF选择的标记之后, HSS又 收到了该 I-CSCF或不同于该 I-CSCF的其它 I-CSCF发送的针对同一 个用户的请求 S-CSCF能力集或名字的请求消息, 则 HSS可以向该 I-CSCF或不同于该 I-CSCF的其它 I-CSCF返回错误响应消息, 以通 知该 I-CSCF或不同于该 I-CSCF的其它 I-CSCF该 HSS正在进行 S-CSCF选择; 或者,
该 I-CSCF或不同于该 I-CSCF的其它 I-CSCF等待预定的时间后 再次向 HSS发送请求 S-CSCF能力集或名字的请求消息; 或者, 该 I-CSCF或不同于该 I-CSCF的其它 I-CSCF指示始发业务请求 者等待预定的时间后再次发起业务请求。
如图 2 所示, 为本发明为用户提供业务的方法实施例一的流程 图, 实施例一中, 用户未在网络中注册并且 HSS 中没有存储为用户 提供服务的 S-CSCF的名字。 当用户同时有未注册终发请求或 AS代 替用户发起的未注册始发请求和注册请求时, 在 I-CSCF收到被选的 为用户提供未注册业务的 S-CSCF的失败响应时, 再次向 HSS请求 S-CSCF的名字, 从而能够为用户提供未注册业务, 避免呼损。
具体包括以下步骤:
步骤 S201 , I-CSCF收到该用户的终发请求或 AS代替用户发起 的始发业务请求;
步骤 S202, I-CSCF通过 LIR ( Location Information Request, 位 置信息请求) 向 HSS请求 S-CSCF的名字或能力集; 步骤 S203 , 如果该用户存在未注册状态的业务或指示了是始发 请求, HSS通过 LIA ( Location Information Answer, 位置信息应答 ) 返回 S-CSCF的能力集给 I-CSCF;
步骤 S204, I-CSCF为用户选择了 S-CSCF1提供服务, 并将业务 请求转给 S-CSCF1;
步骤 S205 , 在 HSS处理 S-CSCF1的 SAR ( Server Assignment Request, 服务器分配请求)业务数据请求之前, 用户发起注册请求。 其中,该 SAR业务数据请求会使 HSS存储 S-CSCF1的名字,该用户 可以是同一个 IMS Subscription下的另一个用户身份;
步骤 S206, I-CSCF收到了该用户终端的注册消息;
步骤 S207, I-CSCF通过 UAR ( User Authorization Request, 用户 授权请求 ) 向 HSS请求 S-CSCF的能力集;
步骤 S208 , HSS通过 UAA ( User Authorization Answer, 用户授 权应答)返回 S-CSCF的能力集给 I-CSCF;
步骤 S209, I-CSCF为用户选择了 S-CSCF2提供服务, 并将注册 请求转给 S-CSCF2;
步骤 S210, S-CSCF2发送 MAR消息向 HSS请求鉴权数据; 步骤 S211 , 如果 S-CSCF1还未发送 SAR业务数据请求向 HSS 请求用户数据, HSS尚未保存 S-CSCF1的名字, HSS会存储 S-CSCF2 的名字, 并通过 MAA ( Multimedia Authenticate Answer , 多媒体认证 应答) 消息返回用户鉴权数据给 S-CSCF2; 或者,
如果 S-CSCF1已经发送 SAR业务数据请求向 HSS请求了用户数 据并且 HSS已经保存了 S-CSCF1的名字, S-CSCF1的名字将会被重 写为 S-CSCF2, 并且 HSS 可以向 S-CSCF1 发起网络注销请求将 S-CSCF1建立的会话释放。
步骤 S212, S-CSCF1发送 SAR业务数据请求向 HSS请求用户数 据;
步骤 S213, HSS发现已经保存了 S-CSCF2, 该 S-CSCF2与发送 请求的 S-CSCF1名字不一致,将会在 SAA( Server Assignment Answer, 服 务 器 分 配 应 答 ) 中 返 回 失 败 指 示 信 息
DIAMETER_E OR_IDENTITY_ALREADY_REGISTERED 给 S-CSCF1 ;
步骤 S214, S-CSCF1回复失败响应给 I-CSCF, 表示无法为用户 提供未注册业务;
步骤 S215 , I-CSCF收到 S-CSCF1的失败响应, 再次向 HSS发 送 LIR请求 S-CSCF的名字或能力集;
其中, I-CSCF可以选择在 S-CSCF1返回的失败响应明确指示已 经有另一个 S-CSCF分配给了用户时才再次向 HSS发送 LIR。
步骤 S216, HSS在 LIA中携带 S-CSCF2的名字;
步骤 S217 , I-CSCF将业务请求转到 S-CSCF2进行处理; 步骤 S218 , S-CSCF2发送 SAR业务数据请求向 HSS请求用户签 约数据;
步骤 S219, HSS返回 SAA携带用户签约数据给 S-CSCF2; 步骤 S220, S-CSCF2正常处理业务。
如图 3 所示, 为本发明为用户提供业务的方法实施例二的流程 图, 实施例二中, 用户未在网络中注册并且 HSS 中没有存储为用户 提供服务的 S-CSCF的名字。 当用户同时有两个或多个未注册终发请 求或 AS代替用户发起的未注册始发请求时, 在 I-CSCF收到其中一 个 S-CSCF的失败响应时, 再次向 HSS请求 S-CSCF的名字, 从而能 够为用户正常提供未注册业务, 避免呼损。
步骤 S301 , I-CSCF收到该用户的终发或 AS代替用户发起的始 发业务请求;
步骤 S302, I-CSCF向 HSS请求 S-CSCF的名字或能力集; 步骤 S303 , 如果该用户存在未注册状态的业务或指示了是始发 请求, HSS返回 S-CSCF的能力集给 I-CSCF;
步骤 S304, I-CSCF为用户选择了 S-CSCF1提供服务, 并将请求 转给 S-CSCF1 ;
步骤 S305 , 在 HSS处理 S-CSCF1的 SAR业务数据请求之前, I-CSCF又收到了该用户的终发请求或 AS代替用户发起的始发业务 请求。 其中, 该 SAR业务数据请求会使 HSS存储 S-CSCF1的名字, 该用户可以是同一个 IMS Subscription下的另一个用户身份;
步骤 S306, I-CSCF向 HSS请求 S-CSCF的名字或能力集; 步骤 S307, HSS返回 S-CSCF的能力集给 I-CSCF;
步骤 S308, I-CSCF又为用户选择了 S-CSCF2提供服务, 并将请 求转给 S-CSCF2;
步骤 S309, S-CSCF2发送 SAR业务数据请求向 HSS请求签约数 据;
步骤 S310, 如果 S-CSCF1还未发送 SAR业务数据请求向 HSS 请求用户数据, HSS尚未保存 S-CSCF1的名字, HSS会存储 S-CSCF2 的名字, 并通过 SAA返回用户签约数据给 S-CSCF2; 或者,
如果 S-CSCF1已经发送 SAR业务数据请求向 HSS请求了用户数 据并且 HSS已经保存了 S-CSCF1的名字, HSS将会在 SAA中返回 失败 DIAMETER_ERROR_IDENTITY_ALREADY_REGISTERED给 S-CSCF2, 之后 S-CSCF2回复失败响应给 I-CSCF, 表示无法为用户 提供未注册业务。 I-CSCF后续处理基本同 S314, 只是针对 S-CSCF2 的失败响应进行。
步骤 S311 , S-CSCF1发送 SAR业务数据请求向 HSS请求用户签 约数据;
步骤 S312, HSS发现已经保存了 S-CSCF2, 且该 S-CSCF2与请 求数据的 S-CSCF1 名字不一致, 将会在 SAA 中返回失败指示信息 DIAMETER_E OR_IDENTITY_ALREADY_REGISTERED 给 S-CSCF1;
步骤 S313, S-CSCF1回复失败响应给 I-CSCF, 表示无法为用户 提供未注册业务;
步骤 S314, I-CSCF收到 S-CSCF1的失败响应, 再次向 HSS发 送 LIR请求 S-CSCF的名字或能力集;
其中, I-CSCF可以选择在 S-CSCF1返回的失败响应明确指示已 经有另一个 S-CSCF分配给了用户时才再次向 HSS发送 LIR。
步骤 S315, HSS在 LIA中携带 S-CSCF2的名字;
步骤 S316, I-CSCF将业务请求转到 S-CSCF2进行处理; 步骤 S317, S-CSCF2发送 SAR业务数据请求向 HSS请求用户签 约数据;
步骤 S318, HSS返回 SAA携带用户签约数据给 S-CSCF2, 之后 S-CSCF2正常处理业务。
上述为用户提供业务的方法,实现了在用户同时发生多个未注册 业务, 或发生未注册业务的同时发生注册请求的情况下, 网络正常为 用户提供相应的服务。
如图 4 所示, 为本发明为用户提供业务的方法实施例三的流程 图。 当用户的多个身份同时发生未注册业务, 或发生未注册业务的同 时发生注册请求,或同时发生注册时, HSS收到 I-CSCF请求 S-CSCF 的能力集的第一请求消息并在第一请求响应消息中携带了 S-CSCF的 能力集后,可以在 HSS中设置一个正在进行 S-CSCF选择的标记,并 可以同时启动一个定时器。当 HSS收到为用户选择的 S-CSCF的 SAR 业务数据请求或 MAR消息并保存了 S-CSCF的名字或定时器超时后, HSS清除该标记和定时器。如果在 HSS保存 S-CSCF名字之前, HSS 又收到 I-CSCF请求 S-CSCF的能力集的第二请求消息, 即又有了该 用户的业务请求, 如果该标记存在, HSS将不立即返回 LIA。 在 HSS 收到了 I-CSCF为用户选择的 S-CSCF的 SAR业务数据请求或 MAR 消息并保存了 S-CSCF的名字后, 再将 S-CSCF的名字通过 LIA返回 给 I-CSCF, 以解决可能出现的为一个用户同时分配两个 S-CSCF的 问题。 如果定时器超时时 HSS还未收到 S-CSCF的 SAR业务数据请 求或 MAR消息, 则返回 S-CSCF的能力集给 I-CSCF进行后续处理。
HSS在收到第二个请求 S-CSCF的能力集的请求消息时,也可以 选择返回一个特定的错误码给 I-CSCF, 指示正在进行 S-CSCF的选 择, I-CSCF可以等待一定时间后再次发送请求 S-CSCF的能力集的 请求消息, 也可以直接返回错误给业务发起方, 指示业务发起方等待 一定时间后再次发起业务请求。
所述错误码还可以进一步携带对所述用户进行的前一次 S-CSCF 选择的预计完成时间或者用以指示再次发起请求的时间, 所述 I-CSCF接收到所述错误响应之后, 根据所述对所述用户进行的前一 次 S-CSCF选择的预计完成时间或者用以指示再次发起请求的时间, 等待预定的时间后再次向所述 HSS发送请求 S-CSCF能力集或名字的 请求消息; 或者, 所述 I-CSCF指示所述用户等待预定的时间后再次 发起业务请求。
实施例三中, 用户未在网络中注册并且 HSS 中没有存储为用户 提供 务的 S-CSCF的名字。 当用户同时有两个或多个终端同时注册 时, HSS通过以上设置正在进行 S-CSCF选择的标记的方式, 能够为 用户正常提供注册业务, 避免呼损。 具体包括以下步骤:
步骤 S401 , I-CSCF收到用户的 ( IMPU1 , IMPI1 ) 的注册请求; 步骤 S402, I-CSCF向 HSS发送 UAR进行授权检查并发送请求 S-CSCF的名字或能力集第一请求消息;
步骤 S403, HSS设置一个正在进行 S-CSCF选择的标记, 可以 同时启动一个定时器,并通过 UAA返回 S-CSCF的能力集给 I-CSCF; 步骤 S404, I-CSCF又收到用户的 (IMPU2, IMPI2 ) 的注册请 求;
步骤 S405 , I-CSCF 向 HSS 发送 UAR 进行授权检查并请求 S-CSCF的名字或能力集, 如果 HSS发现正在进行 S-CSCF选择的标 记已设置, 则 HSS不立即返回 LIA。
步骤 S406, I-CSCF为 IMPU1和 IMPI1选择了 S-CSCF1提供服 务, 并将 IMPU1和 IMPI1的注册请求转发给 S-CSCF1;
步骤 S407 , S-CSCF1发送 MAR消息向 HSS请求 IMPI1和 IMPU1 的鉴权数据;
步骤 S408, HSS保存 S-CSCF1的名字并通过 MAA消息返回鉴 权数据给 S-CSCF1;
步骤 S409, HSS通过 UAA返回 S-CSCF1的名字给 I-CSCF; 步骤 S410, S-CSCF1通过 I-CSCF、 P-CSCF向 IMPI1和 IMPU1 发起 401鉴权挑战;
步骤 S411 , I-CSCF将 IMPU2和 IMPI2的注册请求转给 S-CSCF1; 步骤 S412, S-CSCF1发送 MAR向 HSS请求 IMPI2和 IMPU2 的鉴权数据;
步骤 S413, HSS发现请求数据的 S-CSCF1和存储的 S-CSCF1的 名字一致, 通过 MAA返回鉴权数据给 S-CSCF1;
步骤 S414, S-CSCF1通过 I-CSCF、 P-CSCF向 IMPI2和 IMPU2 发起 401鉴权挑战;
步骤 S415, I-CSCF收到用户 (IMPU1 , IMPI1 ) 的第二个注册 请求;
步骤 S416, I-CSCF 向 HSS 发送 UAR 进行授权检查并请求 S-CSCF的名字或能力集;
步骤 S417, HSS通过 UAA返回 S-CSCF1的名字给 I-CSCF; 步骤 S418, I-CSCF将 IMPU1和 IMPI1的注册请求转给 S-CSCF1; 步骤 S419, I-CSCF收到用户 ( IMPU2, IMPI2 ) 的第二个注册 请求;
步骤 S420, I-CSCF 向 HSS 发送 UAR 进行授权检查并请求 S-CSCF的名字或能力集;
步骤 S421 , HSS通过 UAA返回 S-CSCF1的名字给 I-CSCF; 步骤 S422 , 1-CSCF将 IMPU2和 IMPI2的注册请求转给 S-CSCF1; 步骤 S423 , 正常注册流程。
如图 7所示,为本发明实施例为用户提供业务的实施例四的流程 图, 具体包括以下步骤:
步骤 S701 , 根据 HSS返回的服务呼叫会话控制功能 S-CSCF的 能力集为用户选择第一 S-CSCF并将业务请求转给所述第一 S-CSCF 后, 接收所述第一 S-CSCF返回的失败响应, 所述失败响应中携带第 二 S-CSCF的名字。
在第一 S-CSCF向 I-CSCF返回失败响应之前, 第一 S-CSCF接 收 I-CSCF转发的用户的业务请求,并向 HSS请求该用户的签约数据, 该第一 S-CSCF是 I-CSCF根据 HSS返回的 S-CSCF的能力集选择的。
在第一 S-CSCF向 HSS请求该用户的签约数据时, 如果 HSS发 现该第一 S-CSCF的名字与已存的分配给该用户的 S-CSCF的名字不 符, 则向第一 S-CSCF返回失败指示信息, 该失败指示信息指示已有 不同于第一 S-CSCF 的另一 S-CSCF 分配给了该用户, 然后第一 S-CSCF可以根据该 HSS返回的失败指示信息向 I-CSCF发送携带第 二 S-CSCF的名字的失败响应。
步骤 S702, 所述 I-CSCF从所述失败响应中获取第二 S-CSCF的 信息, 即所述 I-CSCF根据所述第一 S-CSCF返回的失败响应中携带 的第二 S-CSCF的名字将用户的业务请求转发给所述第二 S-CSCF。
在 I-CSCF将用户的业务请求转发给第二 S-CSCF之后, 第二 S-CSCF会向 HSS请求用户的签约数据, 然后根据 HSS返回的该用 户的签约数据, 正常处理该用户的业务请求。
如图 8 所示, 为本发明为用户提供业务的方法实施例五的流程 图, 实施例五中, 用户未在网络中注册并且 HSS 中没有存储为用户 提供服务的 S-CSCF的名字, 当用户同时有未注册终发请求或 AS代 替用户发起的未注册始发请求和注册请求时, 在 I-CSCF收到被选的 为用户提供未注册业务的 S-CSCF的失败响应时, 可以根据失败响应 中携带的当前为用户服务的 S-CSCF 的名字将业务请求发送给该 S-CSCF, 从而能够为用户提供未注册业务, 避免呼损。 具体包括以 下步骤:
步骤 S801 , I-CSCF收到该用户的终发请求或 AS代替用户发起 的始发业务请求;
步骤 S802, I-CSCF通过 LIR ( Location Information Request, 位 置信息请求 ) 向 HSS请求 S-CSCF的名字或能力集;
步骤 S803 , 如果该用户存在未注册状态的业务或指示了是始发 请求, HSS通过 LIA ( Location Information Answer, 位置信息应答 ) 返回 S-CSCF的能力集给 I-CSCF; 步骤 S804, I-CSCF为用户选择了 S-CSCF1提供服务, 并将业务 请求转给 S-CSCF1;
步骤 S805 , 在 HSS处理 S-CSCF1的 SAR ( Server Assignment Request, 服务器分配请求)业务数据请求之前, 用户发起注册请求。 其中,该 SAR业务数据请求会使 HSS存储 S-CSCF1的名字,该用户 可以是同一个 IMS Subscription下的另一个用户身份;
步骤 S806, I-CSCF收到了该用户终端的注册消息;
步骤 S807, I-CSCF通过 UAR ( User Authorization Request, 用户 授权请求 ) 向 HSS请求 S-CSCF的能力集;
步骤 S808 , HSS通过 UAA ( User Authorization Answer, 用户授 权应答)返回 S-CSCF的能力集给 I-CSCF;
步骤 S809, I-CSCF为用户选择了 S-CSCF2提供服务, 并将注册 请求转给 S-CSCF2;
步骤 S810, S-CSCF2发送 MAR消息向 HSS请求鉴权数据; 步骤 S811 , 如果 S-CSCF1还未发送 SAR业务数据请求向 HSS 请求用户数据, HSS尚未保存 S-CSCF1的名字, HSS会存储 S-CSCF2 的名字, 并通过 MAA ( Multimedia Authenticate Answer , 多媒体认证 应答) 消息返回用户鉴权数据给 S-CSCF2; 或者,
如果 S-CSCF1已经发送 SAR业务数据请求向 HSS请求了用户数 据并且 HSS已经保存了 S-CSCF1的名字, S-CSCF1的名字将会被重 写为 S-CSCF2, 并且 HSS 可以向 S-CSCF1 发起网络注销请求将 S-CSCF1建立的会话释放。
步骤 S812, S-CSCF1发送 SAR业务数据请求向 HSS请求用户数 据;
步骤 S813, HSS发现已经保存了 S-CSCF2, 该 S-CSCF2与请求 数据的 S-CSCF1 的名字不一致, 将会在 SAA ( Server Assignment Answer , 服务 器 分 配应 答 ) 中 返 回 失 败指 示 信 息 DIAMETER_E OR_IDENTITY_ALREADY_REGISTERED 给 S-CSCF1 , 同时携带 S-CSCF2的名字; 步骤 S814, S-CSCF1回复失败响应给 I-CSCF, 表示无法为用户 提供未注册业务, 同时携带 S-CSCF2的信息;
步骤 S815, I-CSCF收到 S-CSCF1的失败响应,根据其中 S-CSCF2 的信息将业务请求转到 S-CSCF2进行处理;
步骤 S816, S-CSCF2发送 SAR业务数据请求向 HSS请求用户签 约数据;
步骤 S817, HSS返回 SAA携带用户签约数据给 S-CSCF2;
步骤 S818, S-CSCF2正常处理业务。
上述为用户提供业务的方法,不仅在用户的多个身份同时发生多 个未注册业务, 或在请求未注册业务的同时发生注册请求的情况下, 网络都能正常为用户提供相应的服务,而且在用户的多个身份同时进 行注册时仍然能够解决为一个用户分配多个 S-CSCF的问题, 为用户 正常提供业务。
如图 5所示, 为本发明实施例为用户提供业务的装置的结构图, 该装置用于根据 HSS 返回的 S-CSCF 的能力集为用户选择第一 S-CSCF并将业务请求转给第一 S-CSCF实体后, 接收第一 S-CSCF 实体返回的失败响应,再次向 HSS实体请求 S-CSCF的名字或能力集, 并将用户的业务请求转发给第二 S-CSCF实体。该装置可以为 I-CSCF 实体。
该为用户提供业务的装置包括: 响应接收模块 51 , 用于接收第 一 S-CSCF实体返回的失败响应;
第二 S-CSCF 信息请求模块 52 , 用于再次向 HSS 实体请求 S-CSCF的名字或能力集;
请求转发模块 53, 用于根据 HSS实体返回的第二 S-CSCF的信 息将用户的业务请求转发给第二 S-CSCF实体。
响应接收模块 51还用于接收携带失败指示信息的失败响应, 其 中,该失败指示信息表示 HSS实体已有不同于第一 S-CSCF实体的另 一 S-CSCF实体分配给了用户;
则第二 S-CSCF信息请求模块 52, 还用于当响应接收模块 51接 收的失败响应携带已有不同于第一 S-CSCF实体的另一 S-CSCF实体 分配给了用户的失败指示信息时,再次向 HSS实体请求 S-CSCF的名 字或能力集。
该为用户提供业务的装置还包括: 第二 S-CSCF确定模块 54, 用 于根据第二 S-CSCF信息请求模块 52获取的第二 S-CSCF实体的名字 或能力集, 确定第二 S-CSCF实体。
如图 6所示, 为本发明实施例 HSS实体的结构图, 包括: 能力 集请求接收模块 61 , 用于接收 I-CSCF发送的请求为用户的第二身份 提供服务的 S-CSCF的能力集请求; 以及用于接收请求为用户的第一 身份提供服务的 S-CSCF的能力集或 S-CSCF的名字的请求消息, 并 返回为用户的第一身份提供服务的 S-CSCF的能力集或 S-CSCF的名 字。
信息返回模块 62, 用于在 HSS确定前一次进行 S-CSCF的选择 已结束或前一次进行 S-CSCF的选择已超时时, 将 S-CSCF的能力集 或名字返回给 I-CSCF, 其中, 所述前一次进行 S-CSCF的选择指对 所述用户的第一身份进行的 S-CSCF的选择。
该 HSS实体还包括: 设置模块 63, 用于在能力集请求接收模块 61接收到 I-CSCF发送的为用户的第一身份提供服务的 S-CSCF的能 力集请求之后, 设置正在进行 S-CSCF实体选择的标记, 或者设置一 个定时器并开始计时。
该 HSS实体还包括: 标记清除模块 64, 用于在所述信息返回模 块确定对所述用户的第一身份进行的 S-CSCF的选择已结束或者已超 时时,清除所述正在进行 S-CSCF选择的标记,或者清除所述定时器。
该 HSS实体还包括: 错误返回模块 65, 用于当 HSS确定前一次 进行 S-CSCF的选择未结束或前一次进行 S-CSCF的选择未超时时, 在 HSS实体再次接收到 I-CSCF实体或不同于该 I-CSCF实体的其它 I-CSCF实体发送的针对同一个用户的请求 S-CSCF能力集或名字的 请求消息之后, 向该 I-CSCF 实体或不同于该 I-CSCF 实体的其它 I-CSCF 实体返回错误响应消息, 以通知该 I-CSCF 实体或不同于该 I-CSCF实体的其它 I-CSCF实体正在进行 S-CSCF实体选择。
如图 6, 本发明实施例为用户提供业务的装置另一实施例的结构 图, 包括:
能力集请求接收模块, 用于接收协商呼叫会话控制功能 I-CSCF 发送的请求为用户提供服务的服务呼叫会话控制功能 S-CSCF的能力 集或名字的第二请求消息;
信息返回模块, 用于在确定对所述用户进行的前一次 S-CSCF的 选择已结束或者已超时时, 将 S-CSCF 的能力集或名字返回给所述 I-CSCF。
所述能力集请求接收模块还用于:接收请求为所述用户提供服务 的 S-CSCF的能力集或名字的第一请求消息, 并返回携带 S-CSCF的 能力集或名字的第一请求响应消息。
所述装置还包括: 设置模块, 用于在所述能力集请求接收模块返 回携带 S-CSCF的能力集或名字的第一请求响应消息之后, 设置正在 进行 S-CSCF实体选择的标记, 或者设置一个定时器并开始计时。
所述装置还包括: 标记清除模块, 用于在所述信息返回模块确定 对所述用户进行的前一次 S-CSCF的选择已结束或者已超时时, 清除 所述正在进行 S-CSCF选择的标记, 或者清除所述定时器。
所述装置还包括: 错误返回模块, 用于在所述信息返回模块确定 对所述用户进行的前一次 S-CSCF的选择未结束或者未超时时, 向所 述 I-CSCF 返回错误响应消息, 所述错误响应消息用以通知所述 I-CSCF所述 HSS正在进行 S-CSCF选择 。
以上实施例中处理用户并发业务请求的 I-CSCF实体可以是同一 个, 也可以是不同的 I-CSCF实体。
如图 9所示, 为本发明实施例为用户提供业务的装置的结构图, 所述装置包括:
第一 S-CSCF获取模块 91 , 用于向归属用户签约服务器 HSS请 求 S-CSCF的能力集,并根据所述 HSS返回的 S-CSCF的能力集为用 户选择第一 S-CSCF, 将用户的业务请求转发给所述第一 S-CSCF; 响应接收模块 92, 用于在将业务请求转发给第一服务呼叫会话 控制功能 S-CSCF之后, 接收所述第一 S-CSCF返回的失败响应, 其 中,所述失败响应表示所述 HSS已有不同于所述第一 S-CSCF的另一 S-CSCF分配给了所述用户;
第二 S-CSCF获取模块 93 ,用于接收所述第一 S-CSCF返回的失 败响应之后,获取第二 S-CSCF的信息,其中所述第二 S-CSCF是 HSS 为所述用户当前记录的 S-CSCF;
请求转发模块 94, 用于在获取第二 S-CSCF的信息之后,将用户 的业务请求转发给所述第二 S-CSCF。
本发明实施例中所述装置为协商呼叫会话控制功能 I-CSCF。 其中, 所述第二 S-CSCF获取模块 93还用于: 在接收所述第一 S-CSCF返回的失败响应之后, 再次向所述 HSS请求 S-CSCF的名字 或能力集,接收所述 HSS返回的第二 S-CSCF的名字,或者接收到所 述 HSS返回的 S-CSCF的能力集后,从中选择获取第二 S-CSCF的信 息。
所述响应接收模块 92还用于: 接收所述第一 S-CSCF返回的携 带所述第二 S-CSCF名字的失败响应; 则所述第二 S-CSCF获取模块 93根据接收到的所述第一 S-CSCF返回的携带所述第二 S-CSCF名字 的失败响应, 获取第二 S-CSCF的信息。
本发明实施例当用户未在网络中注册并且 HSS 中没有存储为用 户提供服务的 S-CSCF的名字, 或者当用户同时有未注册终发请求或 AS代替用户发起的未注册始发请求和注册请求时,在 I-CSCF收到被 选的为用户提供未注册业务的 S-CSCF的失败响应时, 可以 ^据失败 响应中携带的当前为用户服务的 S-CSCF的名字或者再次向 HSS请求 S-CSCF的名字或能力集,获取第二 S-CSCF,将业务请求发送给该第 二 S-CSCF,从而能够为用户提供未注册业务, 避免呼损。 或者, HSS 收到 I-CSCF请求 S-CSCF的能力集的请求消息时, 如果判断前一次 选择 S-CSCF还未完成, HSS将不立即返回 LIA。在 HSS收到了 I-CSCF 为用户选择的 S-CSCF的 SAR业务数据请求或 MAR消息并保存了 S-CSCF的名字后, 再将 S-CSCF的名字通过 LIA返回给 I-CSCF, 解 决了可能出现的为一个用户同时分配两个 S-CSCF的问题, 保证为用 户正常提供业务。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明可以通过硬件实现,也可以可借助软件加必要的通用硬件平 台的方式来实现基于这样的理解,本发明的技术方案可以以软件产品 的形式体现出来, 该软件产品可以存储在一个非易失性存储介质(可 以是 CD-ROM, U盘, 移动硬盘等) 中, 包括若干指令用以使得一 台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行 本发明各个实施例所述的方法。
总之, 以上所述仅为本发明的较佳实施例而已, 并非用于限定本 发明的保护范围。 凡在本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求
1、 一种为用户提供业务的方法, 其特征在于, 包括:
协商呼叫会话控制功能 I-CSCF为用户选择第一 S-CSCF并将业 务请求转给所述第一 S-CSCF之后, 接收所述第一 S-CSCF返回的失 败响应;
所述 I-CSCF获取第二 S-CSCF的信息, 将用户的业务请求转发 给所述第二 S-CSCF, 其中所述第二 S-CSCF是 HSS为所述用户当前 记录的 S-CSCF。
2、 如权利要求 1所述为用户提供业务的方法, 其特征在于, 所 述 I-CSCF接收所述第一 S-CSCF返回的失败响应之前还包括:
归属用户签约服务器 HSS接收所述第一 S-CSCF发送的请求用户 的签约数据的请求, 判断自身存储的 S-CSCF 的名字与所述第一 S-CSCF不同后, 向所述第一 S-CSCF返回失败指示信息;
所述第一 S-CSCF根据所述失败指示信息向所述 I-CSCF返回失 败响应。
3、 如权利要求 1或 2所述为用户提供业务的方法, 其特征在于, 所述 I-CSCF获取第二 S-CSCF的信息具体包括:
所述 I-CSCF再次向 HSS请求 S-CSCF的名字或能力集, 所述 I-CSCF接收所述 HSS返回的第二 S-CSCF的名字。
4、 如权利要求 3所述为用户提供业务的方法, 其特征在于, 所 述 I-CSCF将用户的业务请求转发给所述第二 S-CSCF具体包括: 所述 I-CSCF根据所述 HSS返回的第二 S-CSCF名字将用户的业 务请求转发给所述第二 S-CSCF。
5、 如权利要求 2所述为用户提供业务的方法, 其特征在于, 所 述 I-CSCF接收所述第一 S-CSCF返回的失败响应具体包括:
所述 HSS向所述第一 S-CSCF返回携带所述第二 S-CSCF名字的 失败指示信息; 所述 I-CSCF接收所述第一 S-CSCF ^据所述失败指 示信息发送的携带所述第二 S-CSCF名字的失败响应。
6、 如权利要求 5所述为用户提供业务的方法, 其特征在于, 所 述 I-CSCF获取第二 S-CSCF的信息具体包括:
所述 I-CSCF从所述携带第二 S-CSCF的名字的失败响应中获取 所述第二 S-CSCF的信息。
7、 如权利要求 1所述的为用户提供业务的方法, 其特征在于, 在所述 I-CSCF将用户的业务请求转发给所述第二 S-CSCF之后还包 括:
所述第二 S-CSCF向所述 HSS请求所述用户的签约数据; 所述第二 S-CSCF接收所述 HSS返回的所述用户的签约数据,并 处理所述用户的业务请求。
8、 一种为用户提供业务的装置, 其特征在于, 所述装置包括: 响应接收模块, 用于为用户选择第一 S-CSCF并将业务请求转给 所述第一 S-CSCF之后, 接收所述第一 S-CSCF返回的失败响应; 第二 S-CSCF获取模块, 用于接收所述第一 S-CSCF返回的失败 响应之后, 获取第二 S-CSCF的信息, 其中所述第二 S-CSCF是 HSS 为所述用户当前记录的 S-CSCF;
请求转发模块, 用于在获取第二 S-CSCF的信息之后, 将用户的 业务请求转发给所述第二 S-CSCF。
9、 如权利要求 8所述为用户提供业务的装置, 其特征在于, 所 述装置为协商呼叫会话控制功能 I-CSCF。
10、 如权利要求 9所述为用户提供业务的装置, 其特征在于, 所 述装置还包括:
第一 S-CSCF获取模块, 用于向归属用户签约服务器 HSS请求 S-CSCF的能力集, 并根据所述 HSS返回的 S-CSCF的能力集为用户 选择第一 S-CSCF, 将用户的业务请求转发给所述第一 S-CSCF。
11、 如权利要求 10所述为用户提供业务的装置, 其特征在于, 所述第二 S-CSCF获取模块还用于: 在接收所述第一 S-CSCF返回的 失败响应之后,再次向所述 HSS请求 S-CSCF的名字或能力集,接收 所述 HSS返回的第二 S-CSCF的名字。
12、 如权利要求 10所述为用户提供业务的装置, 其特征在于, 所述响应接收模块还用于:
接收所述第一 S-CSCF返回的携带所述第二 S-CSCF名字的失败 响应; 则所述第二 S-CSCF获取模块根据接收到的所述第一 S-CSCF 返回的携带所述第二 S-CSCF名字的失败响应, 获取第二 S-CSCF的 信息。
13、 一种为用户提供业务的方法, 其特征在于, 包括:
归属用户签约服务器 HSS接收协商呼叫会话控制功能 I-CSCF发 送的请求为用户提供服务的服务呼叫会话控制功能 S-CSCF的能力集 或 S-CSCF的名字的第二请求消息后, 判断对所述用户进行的前一次 S-CSCF的选择是否已结束, 或者是否已超时, 如果是, 则所述 HSS 将 S-CSCF的能力集或名字返回给所述 I-CSCF。
14、 如权利要求 13所述为用户提供业务方法, 其特征在于, 所 述 HSS接收所述 I-CSCF发送的请求为用户提供服务的 S-CSCF的能 力集或 S-CSCF的名字的第二请求消息之前还包括:
所述 HSS接收请求为所述用户提供服务的 S-CSCF的能力集或 S-CSCF 的名字的第一请求消息, 并返回携带 S-CSCF 的能力集或 S-CSCF的名字的第一请求响应消息。
15、如权利要求 13或 14所述为用户提供业务方法,其特征在于, 所述 HSS判断对所述用户进行的前一次 S-CSCF的选择是否已结束具 体包括:
所述 HSS判断是否已记录对所述用户提供服务的 S-CSCF的名 字, 若是, 则判断对所述用户进行的前一次 S-CSCF的选择已结束。
16、 如权利要求 14所述为用户提供业务方法, 其特征在于, 所 述 HSS返回携带 S-CSCF的能力集或 S-CSCF的名字的第一请求响应 消息之后还包括:
所述 HSS设置正在进行 S-CSCF选择的标记; 和 /或
所述 HSS设置定时器并开始计时。
17、 如权利要求 16所述为用户提供业务方法, 其特征在于, 所 述 HSS判断对所述用户进行的前一次 S-CSCF的选择是否已结束或者 是否已超时具体包括: 不存在, 则确定对所述用户进行的前一次 S-CSCF的选择已结束; 或 者
所述 HSS判断所述定时器是否超时, 若超时, 则确定对所述用 户进行的前一次 S-CSCF的选择已超时。
18、 如权利要求 16所述为用户提供业务方法, 其特征在于, 所 述方法还包括:
所述 HSS接收到根据携带 S-CSCF的能力集或 S-CSCF的名字的 第一请求响应消息选择的 S-CSCF 发送的请求消息, 并保存所述 S-CSCF的名字之后, 所述 HSS清除所述正在进行 S-CSCF选择的标 记, 或者清除所述定时器。
19、 如权利要求 16所述为用户提供业务的方法, 其特征在于, 所述方法还包括:
所述 HSS判断对所述用户进行的前一次 S-CSCF的选择未结束或 者未超时时, 向所述 I-CSCF返回错误响应消息, 所述错误响应消息 用以通知所述 I-CSCF所述 HSS正在进行 S-CSCF选择; 或者, 所述 HSS等待对所述用户进行的前一次 S-CSCF的选择结束或者超时后, 向所述 I-CSCF返回 S-CSCF的能力集或名字。
20、 如权利要求 19所述为用户提供业务的方法, 其特征在于, 所述 HSS向所述 I-CSCF返回错误响应消息之后进一步包括:
所述 I-CSCF 等待预定的时间后再次向所述 HSS 发送请求 S-CSCF能力集或名字的请求消息; 或者, 所述 I-CSCF指示所述用 户等待预定的时间后再次发起业务请求。
21、 如权利要求 19所述为用户提供业务的方法, 其特征在于, 所述 HSS向所述 I-CSCF返回的错误响应消息还包括:对所述用户进 行的前一次 S-CSCF选择的预计完成时间或者用以指示再次发起请求 的时间; 则所述方法还包括: 所述 I-CSCF接收到所述错误响应之后, 根据所述对所述用户进 行的前一次 S-CSCF选择的预计完成时间或者用以指示再次发起请求 的时间,等待预定的时间后再次向所述 HSS发送请求 S-CSCF能力集 或名字的请求消息; 或者, 所述 I-CSCF指示所述用户等待预定的时 间后再次发起业务请求。
22、 一种为用户提供业务的装置, 其特征在于, 所述装置包括: 能力集请求接收模块, 用于接收协商呼叫会话控制功能 I-CSCF 发送的请求为用户提供服务的服务呼叫会话控制功能 S-CSCF的能力 集或名字的第二请求消息;
信息返回模块, 用于在确定对所述用户进行的前一次 S-CSCF的 选择已结束或者已超时时, 将 S-CSCF 的能力集或名字返回给所述 I-CSCF。
23、 如权利要求 22所述为用户提供业务的装置, 其特征在于, 所述装置为归属用户签约服务器 HSS。
24、如权利要求 22或 23所述为用户提供业务的装置, 其特征在 于, 所述能力集请求接收模块还用于:
接收请求为所述用户提供服务的 S-CSCF的能力集或名字的第一 请求消息,并返回携带 S-CSCF的能力集或名字的第一请求响应消息。
25、 如权利要求 24所述为用户提供业务的装置, 其特征在于, 所述装置还包括:
设置模块, 用于在所述能力集请求接收模块返回携带 S-CSCF的 能力集或名字的第一请求响应消息之后, 设置正在进行 S-CSCF实体 选择的标记, 或者设置一个定时器并开始计时。
26、 如权利要求 25所述为用户提供业务的装置, 其特征在于, 所述装置还包括:
标记清除模块,用于在所述信息返回模块确定对所述用户进行的 前一次 S-CSCF 的选择已结束或者已超时时, 清除所述正在进行 S-CSCF选择的标记, 或者清除所述定时器。
27、如权利要求 22或 23所述为用户提供业务的装置, 其特征在 于, 所述装置还包括:
错误返回模块,用于在所述信息返回模块确定对所述用户进行的 前一次 S-CSCF的选择未结束或者未超时时, 向所述 I-CSCF返回错 误响应消息,所述错误响应消息用以通知所述 I-CSCF所述 HSS正在 进行 S-CSCF选择。
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