WO2012003763A1 - 一种注册控制方法及其系统 - Google Patents

一种注册控制方法及其系统 Download PDF

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Publication number
WO2012003763A1
WO2012003763A1 PCT/CN2011/076091 CN2011076091W WO2012003763A1 WO 2012003763 A1 WO2012003763 A1 WO 2012003763A1 CN 2011076091 W CN2011076091 W CN 2011076091W WO 2012003763 A1 WO2012003763 A1 WO 2012003763A1
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WO
WIPO (PCT)
Prior art keywords
user
cscf
registration
keep
alive
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PCT/CN2011/076091
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English (en)
French (fr)
Inventor
谢振华
郝振武
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012003763A1 publication Critical patent/WO2012003763A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/06De-registration or detaching
    • 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]
    • 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
    • H04L65/1045Proxies, e.g. for session initiation protocol [SIP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data

Definitions

  • the present invention relates to the field of communications, and more particularly to a method and system for registering IMS registration in an IP multimedia subsystem. Background technique
  • IP Multimedia Subsystem is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP). An open and flexible business environment that supports multimedia applications and provides users with rich multimedia services.
  • the control layer and the service layer are separated.
  • the control layer does not provide specific services, and only provides the necessary triggering, routing, and accounting functions to the service layer.
  • the service triggering and control functions in the control layer are Call Session Control Function (CSCF) (divided into Proxy, Interrogating and Serving). The main responsibility is Serving.
  • CSCF Call Session Control Function
  • the business layer is composed of a series of application servers (ASs) that can provide specific business services.
  • the AS can be an independent entity or it can exist in the S-CSCF.
  • the control layer controls the service trigger according to the subscription information of the user, invokes the service on the AS, and implements the service function.
  • the end-to-end device in the session is called User Equipment (UE), which is responsible for interaction with the user.
  • UE User Equipment
  • Some UEs have multiple access networks, including data through the 3GPP (Packet Switch, PS) domain. Into the network, access the network through other non-3GPP data domains, or even access the network through the Circuit Switch (CS) domain.
  • 3GPP Packet Switch, PS
  • CS Circuit Switch
  • IBCF Interconnection Border Control Functions
  • the UE in the IMS network generally needs to register with the IMS to use the IMS service.
  • the registrar (Registrar) in the IMS network is located in the home network of the user, and records the registration information of the user, including the contact address and contact path of the user, so that the registration information of the user can be queried by the registrar.
  • the user whose identity is the target is sent to the user, and the non-system user can also be prevented from using the IMS service.
  • a security proxy exists in the user's visited network to record the user's secure contact information, thereby isolating the untrusted network (the network between the UE and the Proxy) from the trust network.
  • the registrar is the S-CSCF
  • the security agent is the P-CSCF.
  • FIG. 1 is a flow chart of an existing IMS registration, and describes a process in which UE-A performs IMS registration with a home network, and the description thereof is as follows:
  • Step 101 The UE-A obtains the address of the P-CSCF when the PS domain attaches or acquires the IP address, and then the UE-A sends a registration request to the P-CSCF, for example, sends a REGISTER message, and the registration request carries the re-registration time. Interval, user identification information and user contact address;
  • Step 102 The P-CSCF determines the home network of the user according to the user identifier information UE-A, and then forwards the registration request to the home registrar S-CSCF, and the forwarding registration request further carries the information of the P-CSCF, so that the home network can follow
  • the terminal call of the user is forwarded to the P-CSCF;
  • the authentication war message carries a random challenge value, and the authentication challenge message is required to pass through the P-CSCF;
  • Step 104 The P-CSCF forwards the authentication message to the UE-A.
  • Step 105 The UE-A uses the private key to calculate a response value of the challenge value, and then resends the registration request, where the registration request carries the challenge response value.
  • Step 106 The P-CSCF forwards the registration request to the S-CSCF.
  • Step 107 The S-CSCF calculates the challenge response value by using the private key of the user, and compares the
  • the S-CSCF determines whether the challenge response value sent by UE-A is the same, if it is the same, it is a legitimate user, and the difference is an illegal user.
  • the S-CSCF returns a registration response message to the UE-A, for example, sending a "200 OK" message.
  • the registration response message carries a re-registration interval, which is the same as or smaller than the interval in step 101;
  • Step 108 The P-CSCF forwards the registration response to the UE-A, and records the re-registration interval associated with the user identifier.
  • the UE-A completes the registration with the IMS network, and negotiates with the P-CSCF and the S-CSCF for the re-registration interval.
  • the P-CSCF learns that the network has authenticated the user as a legitimate user, the user can use the user's contact.
  • the address negotiates security information with the UE-A, that is, establishes information of the secure transmission channel, thereby ensuring secure data transmission of the UE-A in the untrusted network.
  • Step 109 At the same time as step 107, the S-CSCF sends a registration notification to the AS, for example, sending a REGISTER message to the AS;
  • Step 110 The AS returns a registration notification response message to the S-CSCF, for example, sending a "200 OK" message;
  • Step 111 When the re-registration time interval of the UE-A is fast, the UE-A sends a re-registration request to the P-CSCF, for example, sending a REGISTER message, and the REGISTER message is transmitted in a secure manner, and thus is considered as a re-registration request.
  • the re-registration request carries a new re-registration interval, which is the same as or different from that in step 108;
  • Step 112 The P-CSCF forwards the registration request to the S-CSCF.
  • Step 113 The S-CSCF returns a re-registration response message to the UE-A, for example, sending "200 OK"
  • the message, the re-registration response message carries a re-registration interval, which is the same as or smaller than the interval in step 111;
  • Step 114 The P-CSCF forwards the re-registration response message to the UE-A, and records the re-registration time interval associated with the user identifier.
  • Step 115 At the same time as step 113, the S-CSCF sends a re-registration notification to the AS, for example, sending a NOTIFY message to the AS, and the re-registration notification carries the registration event value;
  • Step 116 The AS returns a re-registration notification response message to the S-CSCF, for example, sending a "200 OK" message.
  • the re-registration interval is used to determine whether the UE is faulty.
  • the UE may not be in the PS at the same time.
  • the domain sends data, causing the UE to fail to send the re-registration request.
  • the IMS network considers the UE to be faulty and deletes the user-related data.
  • the S-CSCF also terminates the IMS service of the user, causing service interruption. Summary of the invention
  • the present invention provides a registration control method for IMS registration and a system thereof, to solve the problem that the registration of the user fails due to timeout when the user has a session in the CS domain and cannot send data to the PS, thereby interrupting the IMS service. .
  • a registration control implementation method when the AS determines that the registration of the user is to be controlled, the S-CSCF is notified to perform a control operation on the registration of the user, and the S-CSCF notifies the P-CSCF to perform a control operation on the registration of the user.
  • the step of the AS notifying the S-CSCF is: the AS notifies the HSS or the HLR to control registration of the user, and the HSS or HLR notifies the S-CSCF to perform a control operation on the user.
  • the control is keep-alive, or revoke keep-alive, or logout.
  • the method further includes: when the S-CSCF and the P-CSCF receive a notification that the registration operation of the user is performed, the user is stopped.
  • the re-registration timer starts the re-registration timer of the user when receiving a notification that the registration of the user is performed to cancel the keep-alive operation.
  • the AS determines that the registration of the keep-alive user or the registration of the revoked keep-alive user is: the AS determines that the user has a circuit-switched (CS) session, To keep the registration of the user; if the AS determines that the CS session of the user is terminated, the registration of the user is revoked.
  • CS circuit-switched
  • the step of the AS determining to log off the user's registration is:
  • the step of the AS determining whether the user has a CS session is: the AS determines whether the user has a CS session by using the IMS registration user identifier of the user to be associated with the CS session number information.
  • the AS notifying the S-CSCF to perform a logout operation on the registration of the user further includes: the terminal of the user passing the keepalive interval and/or the re-registration interval through the P - The CSCF is sent to the S-CSCF.
  • the AS notifying the S-CSCF to perform a logout operation on the registration of the user further includes: sending, by the P-CSCF, a keep-alive time interval and/or a re-registration time interval to the S-CSCF.
  • the AS notifying the S-CSCF to perform the logout operation on the registration of the user further includes: the S-CSCF sending the re-registration time interval to the AS.
  • the method further includes: the terminal of the user negotiates a re-registration time interval with the AS.
  • the S-CSCF receives a registration request from a user, and sends a keep-alive flag to the P-CSCF, or the P-CSCF and the IBCF, and the P-CSCF or the IBCF determines that the user is to be logged off, and then notifies The S-CSCF logs out of the user.
  • the method further includes: the IBCF determining to log out the user, and notifying the P-CSCF to log off the user.
  • the step of the P-CSCF or the IBCF determining to deregister the user is: the P-CSCF or the IBCF's re-registration timer for the user times out, and determining that the user has no CS session, then To log out of the user.
  • the step of the P-CSCF or the IBCF determining whether the user has a CS session is: the P-CSCF or the IBCF determines whether the user identifier is associated with the CS session number information by using the IMS registration of the user Whether the user has a CS session.
  • the method further includes: the S-CSCF stopping the re-registration timer of the user.
  • the method further includes: the P-CSCF receiving the keep-alive flag, and stopping the re-registration timer of the user.
  • the keep-alive flag is a keep-alive time interval.
  • the method also includes the S-CSCF using the keep alive interval as the re-registration time interval of the user.
  • the method further includes: receiving, by the P-CSCF, a keep-alive time interval, using the keep-alive time interval as the re-registration time interval of the user.
  • a registration control system comprising:
  • the S-CSCF is configured to notify the P-CSCF to perform a control operation on the registration of the user.
  • a registration control system comprising: The S-CSCF is configured to receive a registration request of the user, and send a keep-alive flag to the P-CSCF, or the P-CSCF, and the IBCF;
  • the P-CSCF or IBCF is used to determine that the user is to be logged off, and then the S-CSCF is notified to log off the user.
  • the network keeps alive, revokes the keep-alive and the log-out, and solves the problem that the user has a session in the CS domain and cannot send data to the PS, causing the registration of the user to expire due to timeout, thereby interrupting the IMS service, and It is also possible to log off the user's registration when the UE fails to perform IMS re-registration.
  • Figure 1 is a schematic diagram of an existing IMS registration process
  • FIG. 2 is a schematic diagram 1 of an IMS registration process of the present invention
  • FIG. 3 is a second schematic diagram of the IMS registration process of the present invention.
  • the S-CSCF when the AS determines that the registration of the user is to be controlled, the S-CSCF is notified to perform a control operation on the registration of the user; the S-CSCF notifies the P-CSCF to perform a control operation on the registration of the user; or, the S-CSCF receives the registration of the user.
  • the request sends a keep-alive flag to the P-CSCF, or the P-CSCF and the IBCF; the P-CSCF or the IBCF determines that the user is to be logged off, and notifies the S-CSCF to log off the user.
  • FIG. 2 is a schematic diagram 1 of the IMS registration procedure of the present invention, describing a procedure in which UE-A performs IMS registration with the home network, and after the UE-A initiates a session in the CS domain, the AS notifies the S-CSCF and the P-CSCF to keep user information.
  • the process is described as follows:
  • Steps 201 to 210 are the same as steps 101 to 110 of FIG. 1;
  • Step 211 UE-A initiates establishment of a voice session in the CS domain, for example, sending a SETUP message;
  • MSC Server mobile switching control server
  • Step 214 The AS forwards the call message to the remote end, and sends a call response message to the S-CSCF after receiving the remote call response message, for example, sending a “200 OK” message;
  • Step 215 The S-CSCF forwards the call response message to the MSC Server.
  • Step 216 The MSC Server sends a call response message of the CS domain to the UE-A, for example, sending an ANM (Answer) message;
  • Step 217 At the same time as step 213, or at the same time as step 214, the AS associates with the IMS registered user identifier of the user according to the number of the UE-A or the associated number information, and sends a keep-alive notification message to the S-CSCF, for example, sending an INFO (information)
  • the message, the keep-alive notification message carries the IMS registered user identifier of the UE-A and the identifier of the keep-alive operation, or sends a keep-alive notification message to the Home Subscriber Server (HSS) or the Home Location Register (HLR) and is sent by the HSS or HLR.
  • HSS Home Subscriber Server
  • HLR Home Location Register
  • the S-CSCF is notified; in this embodiment, the UE-A is used as the calling party to describe, so the number information is the calling number information. If the UE-A is called, the number information is the called number information.
  • Step 218 The S-CSCF stops the re-registration timer, and forwards the keep-alive notification message to the P-CSCF, and the P-CSCF receives the keep-alive notification message, and stops the re-registration timer.
  • Step 219 The UE-A terminates the voice session in the CS domain, for example, sends a RELEASE message.
  • Step 220 The MSC Server receives the termination session message of the UE-A, and sends an IMS termination request to the home domain S-CSCF of the UE-A, for example, sending a BYE (hang up) message;
  • Step 221 The S-CSCF forwards the termination request to the AS.
  • Step 222 The AS forwards the termination request to the remote end, and after receiving the remote termination response message, Sending a termination response message to the S-CSCF, for example, sending a "200 OK"message;
  • Step 223 The S-CSCF forwards the termination response message to the MSC Server;
  • Step 224 The MSC Server sends a termination response message of the CS domain to the UE-A, for example, sending a RELEASE Ack message.
  • the UE-A and the remote CS session are over.
  • Step 225 At the same time as step 221, or at the same time as step 222, the AS sends a revoke keep-alive notification message to the S-CSCF, for example, sends an INFO (information) message, and revokes the IMS registered user identifier carrying the UE-A in the keep-alive notification message. Request to revoke the identity of the keep-alive operation, or send a message to the HSS or HLR, and notify the S-CSCF by the HSS or HLR;
  • Step 226 The S-CSCF restarts the re-registration timer, and forwards the revocation keep-alive notification message to the P-CSCF, and the P-CSCF receives the revocation keep-alive notification message, and restarts the re-registration timer.
  • FIG. 3 is a schematic diagram 2 of the IMS registration procedure of the present invention, describing a procedure in which UE-A performs IMS registration with the home network, and the UE notifies the S-CSCF and the P-CSCF after the UE-A fails to perform IMS re-registration on time.
  • the process of logging out the user is described as follows:
  • Step 301 The UE-A obtains the address of the P-CSCF when the PS domain attaches or acquires the IP address, and then the UE-A sends a registration request to the P-CSCF, for example, sends a REGISTER message, and the registration request carries the keep-alive time.
  • Interval and/or re-registration interval, user identification information, and user contact address, the keep-alive interval is long enough (such as 24 hours), so that the UE has enough time to complete the CS session (the CS session itself has a time limit, such as 12 hours, exceeding The time-limited network releases the CS session.
  • the keep-alive interval can be carried in the manner of carrying the original registration interval, that is, the P-CSCF and/or the S-CSCF consider the keep-alive interval as the re-registration interval. Play a life-saving role;
  • Step 302 The P-CSCF determines the home network of the user according to the user identifier information UE-A, and then forwards the registration request to the home registrar S-CSCF, and the forwarding registration request further carries the information of the P-CSCF, so that the home network can follow Forwarding the user's final call to the P-CSCF,
  • the P-CSCF carries the keep-alive interval and/or the re-registration interval in the forwarded registration request, where the re-registration interval is obtained from the registration request sent by the UE, and the keep-alive interval may be obtained from the registration request sent by the UE.
  • the keep-alive interval can be carried in the manner of carrying the original registration time interval, that is, let the S-CSCF consider the keep-alive interval as the re-registration interval, thereby playing a life-saving role;
  • Steps 303 to 306 are the same as steps 103 to 106 of FIG. 1;
  • Step 307 The S-CSCF calculates the challenge response value by using the private key of the user, and compares whether the challenge response value sent by the UE-A is the same, if the same is the legal user, the difference is the illegal user, and the user is the legal user.
  • the S-CSCF returns a registration response message to the UE-A, for example, sending a "200 OK" message, and the registration response message carries a keep-alive interval and/or a re-registration interval, if the UE-A or P-CSCF uses the transmission weight.
  • the keep-alive interval is sent in the same manner as the registration interval.
  • the S-CSCF considers the keep-alive interval as the re-registration interval, and the S-CSCF may not modify the interval.
  • Step 308 The P-CSCF forwards the registration response message to the UE-A, and records the keepalive interval associated with the user identifier. (If the keepalive interval is sent in the same manner as the re-registration interval, the P-CSCF saves the re-registration. The time interval operation actually saves the keep alive interval).
  • the UE-A completes registration with the IMS network.
  • the P-CSCF learns that the user has authenticated the user as a legitimate user, the P-CSCF can use the contact address of the user to negotiate security information with the UE-A, that is, establish a secure transmission channel information. Thereby ensuring secure data transmission by UE-A in an untrusted network.
  • the P-CSCF and the S-CSCF reserve user information at keep-alive intervals, and restart the timer after receiving the re-registration request.
  • the operation is the same as steps 111-116 in Figure 1, except that the keep-alive time interval is used instead of Re-registration interval.
  • Step 309 At the same time as step 307, the S-CSCF sends a registration notification to the AS, for example, sending a REGISTER message to the AS, and the registration notification may carry a re-registration time interval;
  • Step 310 The AS returns a registration notification response message to the S-CSCF, for example, sending "200 OK" Message
  • Step 311 The UE-A may request the AS to re-register the time interval, such as sending an HTTP request.
  • Step 312 The AS returns a re-registration interval specified by the network, for example, sending an HTTP response.
  • UE-A and the network negotiate the re-registration interval. If steps 310-311 are not performed, UE-A and AS can use the pre-configured re-registration interval, or the network uses the re-registration time sent by UE-A. interval.
  • Step 313 If the UE-A fails to perform the re-registration operation, the re-registration timer of the AS expires.
  • the AS determines that the UE-A does not have an associated CS session, and thus determines that the UE-A cannot perform the re-registration operation due to the fault. Rather than performing the CS session, the re-registration operation cannot be performed.
  • Step 315 The S-CSCF cancels the user data, and sends a logout message to the P-CSCF, for example, sending a NOTIFY message, and the P-CSCF cancels the user after receiving the logout message.
  • FIG. 4 is a schematic diagram 3 of the IMS registration process of the present invention, describing UE-A to the home network
  • IMS registration and the process in which UE-A fails to perform IMS re-registration on time, and IBCF (or P-CSCF) notifies S-CSCF to log off the user, which is described as follows:
  • Step 401 UE-A obtains the address of the P-CSCF when the PS domain attaches or acquires the IP address, and then the UE-A sends a registration request to the P-CSCF, for example, sends a REGISTER message, and the registration request carries the re-registration time. Interval, user identification information and user contact address; Step 402: The P-CSCF determines the user's home network according to the user identification information UE-A, and then determines whether the registration request needs to be forwarded to the IBCF. If not, the registration request is sent to the S-CSCF.
  • the P-CSCF decides that The message is forwarded to the IBCF, and the forwarded registration request further carries the information of the P-CSCF, so that the home network can forward the subsequent call to the P-CSCF, and the P-CSCF carries the re-registration time in the forwarded registration request. Interval, where the re-registration interval is obtained from a registration request sent by the UE;
  • Step 403 The IBCF forwards the registration request to the home registrar S-CSCF.
  • Step 404 If the S-CSCF determines that the user is to be authenticated to ensure that it is a valid user, send an authentication challenge message to the UE-A, for example, sending a "401 Unauthorized" message, where the authentication challenge message carries a random challenge value, if step 402
  • the P-CSCF requests the authentication challenge message to pass through the IBCF, and the authentication challenge message is required to pass the P-CSCF.
  • the S-CSCF requests the authentication challenge message to pass through the IBCF.
  • Step 405 The IBCF forwards the authentication challenge message to the P-CSCF.
  • Step 406 The P-CSCF forwards the authentication challenge message to the UE-A.
  • Step 407 UE-A calculates a response value of the challenge value by using a private key, and then resends the registration request, where the registration request carries a challenge response value;
  • Step 408 If the P-CSCF sends the registration request to the IBCF in step 402, the P-CSCF forwards the registration request to the IBCF, otherwise the P-CSCF forwards the registration request to the S-CSCF. In this embodiment, the P-CSCF forwards the request.
  • the registration request is for the IBCF;
  • Step 409 The IBCF forwards the registration request to the S-CSCF.
  • Step 410 The S-CSCF calculates the challenge response value by using the private key of the user, and compares whether the challenge response value sent by the UE-A is the same, if the same is the legal user, the difference is the illegal user, and the user is the legal user.
  • the S-CSCF returns a registration response message to the UE-A, for example, sending a "200 OK" message, the registration response message carries the keep-alive flag and the re-registration time interval, and the keep-alive flag may be a keep-alive time interval, if carried The keep-alive flag, the S-CSCF stops the use The re-registration timer of the user, if carrying the keep-alive time interval, the S-CSCF uses the guard time interval as the re-registration time interval of the user.
  • S - The CSCF requests the registration response message to pass through the IBCF, otherwise the registration response message is required to pass through the P-CSCF.
  • the S-CSCF requests the registration response message to pass through the IBCF; Step 411, the IBCF receives the registration response message, and records the weight. Register the time interval, and then forward the registration response message to the P-CSCF;
  • Step 412 The P-CSCF receives the registration response message, stops the re-registration timer of the user according to the keep-alive flag, or uses the keep-alive time interval instead of the re-registration interval if the keep-alive flag is a keep-alive time interval.
  • the CSCF forwards the registration response to the UE-A.
  • the UE-A completes registration with the IMS network.
  • the P-CSCF learns that the IMS network has authenticated the user as a legitimate user, the P-CSCF can use the contact address of the user to negotiate security information with the UE-A, that is, establish a secure transmission channel information. To ensure secure data transmission by UE-A in untrusted networks.
  • the MSC Server initiates a call through the P-CSCF or the IBCF according to the configuration, so that the P-CSCF or the IBCF can determine whether the user has a CS session. In this embodiment, the MSC Server initiates a call through the IBCF.
  • Step 413 If the UE-A fails, the re-registration operation cannot be performed, and the IBCF re-registration timer expires.
  • the IBCF determines that the UE-A has no related CS session at this time, so that the UE-A cannot perform the re-registration operation due to the failure.
  • the re-registration operation cannot be performed instead of performing the CS session; if the P-CSCF sends the registration request to the S-CSCF in step 402, and the MSC Server initiates the call through the P-CSCF, the above judgment is performed by the P-CSCF.
  • Step 414 The IBCF sends a logout message to the S-CSCF, for example, sending a REGISTER message, and the expire field is set to 0.
  • Step 415 the IBCF further sends a logout message to the P-CSCF, for example, sending a NOTIFY message, and the P-CSCF logs out the user after receiving the logout message. If the P-CSCF sends a registration request to the S-CSCF in step 402, and the MSC Server initiates a call through the P-CSCF, the P-CSCF does not need to perform step 415.
  • the registration control method system of the IMS registration includes: when the AS is used to determine the registration of the user to be controlled, the S-CSCF is notified to perform the control operation on the registration of the user; and the S-CSCF is used to notify the P-CSCF to register the user. Perform control operations; or,
  • the S-CSCF is configured to receive a registration request from the user, and send a keep-alive flag to the P-CSCF, or the P-CSCF and the IBCF; and the P-CSCF or the IBCF is used to determine that the user is to be logged off, and then notify the S-CSCF to log off the user.
  • each functional unit in each embodiment of the present invention may be implemented in the form of hardware, or may be implemented in the form of a software functional module.
  • the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
  • the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明公开了一种IMS注册的注册控制方法及其系统,其中方法包括:AS判断要控制用户的注册时,通知S-CSCF对用户的注册执行控制操作,S-CSCF通知P-CSCF对用户的注册执行控制操作;或者,S-CSCF收到用户的注册请求,向P-CSCF、或P-CSCF和IBCF发送保活标识,P-CSCF或IBCF判断要注销所述用户,则通知S-CSCF注销用户。本发明方案中,通过网络控制保活、撤销保活和注销,解决了用户在CS域有会话而不能向PS发送数据时导致用户的注册因超时而失效,从而使IMS业务中断的问题,并且还能在UE发生故障不能执行IMS重注册时注销用户的注册。

Description

一种注册控制方法及其系统 技术领域
本发明涉及通信领域,更具体地涉及一种 IP多媒体子系统中的 IMS注 册的注册控制方法及其系统。 背景技术
网格互联协议 ( Internet Protocol, IP )多媒体子系统( IP Multimedia Core Network Subsystem , IMS ) 是由第三代合作伙伴计划 ( 3rd Generation Partnership Project, 3GPP )提出的一种基于 IP的网络架构, 构建了一个的 开放而灵活的业务环境, 支持多媒体应用, 能够为用户提供丰富的多媒体 业务。
在 IMS业务体系中, 控制层和业务层是分离的, 控制层不提供具体业 务, 只向业务层提供必要的触发、 路由、 计费等功能。 控制层中业务触发 和控制功能是呼叫会话控制功能( Call Session Control Function, CSCF ) (分 为代理 ( Proxy ). 查询 ( Interrogating ) 和服务 ( Serving )三种类型, 其中 负主要责任的是 Serving, Interrogating类型是可选的)完成的。 业务层是由 一系列应用服务器( Application Server, AS )组成, 能提供具体业务服务。 AS可以是独立的实体, 也可以存在于 S-CSCF中。 控制层(S-CSCF )根据 用户的签约信息控制业务触发, 调用 AS上的业务, 实现业务功能。 会话中 的端到端设备称为用户设备( User Equipment, UE ), 负责与使用者的交互, 有的 UE具有多种接入网络的方式, 包括通过 3GPP的数据( Packet Switch , PS )域接入网络, 通过其他非 3GPP 的数据域接入网络, 甚至可以通过电 路交换(Circuit Switch, CS )域接入网络等。 IMS网络中还存在网间交互 边界控制功能 ( Interconnection Border Control Functions , IBCF ), 用于不同 运营商的 IMS网络间的交互。
IMS网络中的 UE—般需要向 IMS注册后方能吏用 IMS业务。 IMS网 络中的归属注册器(Registrar )位于用户的归属网, 将用户的注册信息记录 下来, 包括用户的联系地址、 联系路径等, 这样就可以通过向注册器查询 用户的注册信息来实现将以该用户标识为目标的终呼发往该用户, 也可以 防止非系统用户使用 IMS业务。 归属网中还存在 AS , 归属注册器可以将用 户的注册及重注册情况通知 AS, 以帮助 AS获得用户及 UE的一些信息。 用户的拜访网中存在一个安全代理( Proxy ),用于记录用户的安全联系信息, 从而将不信任的网絡( UE与 Proxy间的网络)与信任网络隔离开。 一般归 属注册器为 S-CSCF, 而安全代理为 P-CSCF。 通过注册, UE、 安全代理和 归属注册器会协商一个重注册定时器, UE在重注册定时器超时前要发送重 注册请求,重注册定时器可以防止 UE故障时归属注册器和安全代理仍保存 用户数据而无法知道何时应该删除以释放空间。 在重注册定时器超时后, 归属注册器要将与此用户标识相关的 IMS业务全部终止。
图 1是现有的 IMS注册流程图, 描述了 UE-A向归属网进行 IMS注册 的过程, 其描述如下:
步骤 101、 UE-A在 PS域附着或获取 IP地址时会获得 P-CSCF的地址, 而后 UE-A向 P-CSCF发送注册请求, 比如发送 REGISTER (注册) 消息, 注册请求中携带重注册时间间隔、 用户标识信息和用户联系地址;
步驟 102、 P-CSCF根据用户标识信息 UE- A判断用户的归属网络, 而 后向归属注册器 S-CSCF转发注册请求, 转发的注册请求中进一步携带 P-CSCF的信息, 使得归属网能将后续对该用户的终呼转发给该 P-CSCF; 步骤 103、 若 S-CSCF决定要对该用户认证以确保其是合法用户, 则向 UE-A发送认证挑战消息, 比如发送 " 401 Unauthorized" 消息, 认证 战消 息中携带随机挑战值, 并要求该认证挑战消息途经 P-CSCF; 步骤 104、 P-CSCF转发该认证 4此战消息给 UE- A; 步骤 105、 UE-A使用私钥计算挑战值的响应值, 然后重新发送注册请 求, 该注册请求携带挑战响应值;
步骤 106、 P-CSCF转发该注册请求给 S-CSCF;
步骤 107、 S-CSCF使用该用户的私钥计算挑战响应值, 并比较其与
UE-A发送过来的挑战响应值是否相同, 如相同则为合法用户, 不同则为非 法用户, 用户为合法用户时, S-CSCF返回注册响应消息给 UE-A, 比如发 送 " 200 OK" 消息, 注册响应消息中携带重注册时间间隔, 此时间间隔和 步骤 101中的时间间隔相同或更小;
步骤 108、 P-CSCF转发注册响应给 UE- A, 并记录下该用户标识相关 的重注册时间间隔。
至此, UE-A完成向 IMS网络的注册, 并和 P-CSCF、 S-CSCF协商好 了重注册时间间隔, P-CSCF得知网络已认证该用户为合法用户, 就可以使 用该用户的联系地址与 UE-A协商安全信息, 即建立安全传输通道的信息, 从而确保 UE-A在不信任的网络中的安全数据传输。
步骤 109、 与步骤 107同时, S-CSCF向 AS发送注册通知, 比如发送 REGISTER消息给 AS;
步骤 110、 AS向 S-CSCF返回注册通知响应消息, 比如发送 "200 OK" 消息;
步驟 111、 当 UE-A的重注册时间间隔快到时, UE-A向 P-CSCF发送 重注册请求, 比如发送 REGISTER消息, 该 REGISTER消息使用安全方式 传送, 因此被认为是重注册请求, 该重注册请求中携带新的重注册时间间 隔, 该时间间隔与步骤 108中的相同或不同;
步骤 112、 P-CSCF转发注册请求给 S-CSCF;
步骤 113、 S-CSCF返回重注册响应消息给 UE-A, 比如发送 " 200 OK" 消息, 重注册响应消息中携带重注册时间间隔, 此时间间隔和步骤 111 中 的时间间隔相同或更小;
步碌 114、 P-CSCF转发该重注册响应消息给 UE-A, 并记录下该用户 标识相关的重注册时间间隔;
步骤 115、 与步骤 113同时, S-CSCF向 AS发送重注册通知, 比如发 送 NOTIFY (通知 ) 消息给 AS, 重注册通知中携带注册事件值;
步骤 116、 AS向 S-CSCF返回重注册通知响应消息,比如发送" 200 OK" 消息。
现有的 IMS注册流程, 重注册时间间隔是为了用来判断 UE是否故障 的, 但当用户在 CS域有会话时 (用户此时可能还有非语音的 IMS业务), UE可能不能同时在 PS域发送数据, 导致 UE不能发送重注册请求, 此时 IMS网絡会认为 UE故障而删除用户相关数据, 导致用户在结束 CS会话从 而可以继续在 PS域接收和发送数据后, UE必须重新执行注册过程, 而且 S-CSCF还会终止用户的 IMS业务, 导致业务中断。 发明内容
有鉴于此, 本发明提出一种 IMS注册的注册控制方法及其系统, 以解 决用户在 CS域有会话而不能向 PS发送数据时导致用户的注册因超时而失 效, 从而使 IMS业务中断的问题。
为解决上述技术问题, 本发明的技术方案是这样实现的:
一种注册控制实现方法, AS判断要控制用户的注册时, 通知 S-CSCF 对所述用户的注册执行控制操作,所述 S-CSCF通知 P-CSCF对所述用户的 注册执行控制操作。
所述 AS通知所述 S-CSCF的步骤为: 所述 AS通知 HSS或 HLR控制 所述用户的注册,所述 HSS或 HLR通知所述 S-CSCF对所述用户执行控制 操作。 所述控制为保活、 或撤销保活、 或注销。
所述控制为保活、 或撤销保活时, 该方法还包括: 所述 S-CSCF和所述 P-CSCF收到对所述用户的注册执行保活操作的通知时,停止所述用户的重 注册定时器, 收到对所述用户的注册执行撤销保活操作的通知时, 启动所 述用户的重注册定时器。
所述控制为保活、 或撤销保活时, 所述 AS判断要保活用户的注册或撤 销保活用户的注册的步骤为: 所述 AS 判断所述用户有电路交换( CS )会 话, 则要保活所述用户的注册; 所述 AS判断所述用户的 CS会话终止, 则 要撤销保活所述用户的注册。
所述控制为注销时, 所述 AS 判断要注销用户的注册的步骤为: 所述
AS的针对所述用户的重注册定时器超, 并且所述用户无 CS会话时, 则要 注销所述用户的注册。
所述 AS判断所述用户是否有 CS会话的步骤为: 所述 AS通过所述用 户的 IMS注册用户标识是否与 CS会话号码信息有关联判断所述用户是否 有 CS会话。
所述控制为注销时, 所述 AS通知所述 S-CSCF对所述用户的注册执行 注销操作之前还包括: 所述用户的终端将保活时间间隔和 /或重注册时间间 隔通过所述 P-CSCF发送给所述 S-CSCF。
所述控制为注销时, 所述 AS通知所述 S-CSCF对所述用户的注册执行 注销操作之前还包括: 所述 P-CSCF将保活时间间隔和 /或重注册时间间隔 发送给所述 S-CSCF。
所述控制为注销时, 所述 AS通知所述 S-CSCF对所述用户的注册执行 注销操作之前还包括: 所述 S-CSCF将重注册时间间隔发送给所述 AS。
所述控制为注销时, 所述 AS通知所述 S-CSCF注销所述用户之前还包 括: 所述用户的终端与所述 AS协商重注册时间间隔。 一种注册控制方法, S-CSCF 收到用户的注册请求, 向 P-CSCF、 或 P-CSCF和 IBCF发送保活标识,所述 P-CSCF或所述 IBCF判断要注销所述 用户, 则通知所述 S-CSCF注销所述用户。
该方法还包括: 所述 IBCF判断要注销所述用户, 则通知所述 P-CSCF 注销所述用户。
所述 P-CSCF或所述 IBCF判断要注销所述用户的步骤为:所述 P-CSCF 或所述 IBCF的针对所述用户的重注册定时器超时, 并判断所述用户无 CS 会话, 则要注销所述用户。
所述 P-CSCF或所述 IBCF判断所述用户是否有 CS会话的步骤为: 所 述 P-CSCF或所述 IBCF通过所述用户的 IMS注册用户标识是否与 CS会话 号码信息有关联判断所述用户是否有 CS会话。
所述向 P-CSCF、 或 P-CSCF和 IBCF发送保活标识之前还包括: 所述 S-CSCF停止所述用户的重注册定时器。
该方法还包括: 所述 P-CSCF收到保活标识,停止所述用户的重注册定 时器。
所述保活标识是保活时间间隔。
该方法还包括:所述 S-CSCF使用所述保活时间间隔作为所述用户的重 注册时间间隔。
该方法还包括: 所述 P-CSCF收到保活时间间隔,使用所述保活时间间 隔作为所述用户的重注册时间间隔。
一种注册控制系统, 包括:
AS , 用于判断要控制用户的注册时, 通知 S-CSCF对用户的注册执行 控制操作;
S-CSCF, 用于通知 P-CSCF对用户的注册执行控制操作。
一种注册控制系统, 包括: S-CSCF, 用于收到用户的注册请求, 向 P-CSCF、 或 P-CSCF和 IBCF 发送保活标识;
P-CSCF或 IBCF, 用于判断要注销用户, 则通知 S-CSCF注销用户。 本发明方案中, 通过网络控制保活、 撤销保活和注销, 解决了用户在 CS域有会话而不能向 PS发送数据时导致用户的注册因超时而失效, 从而 使 IMS业务中断的问题, 并且还能在 UE发生故障不能执行 IMS重注册时 注销用户的注册。 附图说明
图 1是现有的 IMS注册流程示意图;
图 2是本发明的 IMS注册流程示意图一;
图 3是本发明的 IMS注册流程示意图二;
图 4是本发明的 IMS注册流程示意图三。 具体实施方式
本发明中, AS判断要控制用户的注册时, 通知 S-CSCF对用户的注册 执行控制操作; S-CSCF通知 P-CSCF对用户的注册执行控制操作; 或者, S-CSCF收到用户的注册请求, 向 P-CSCF、或 P-CSCF和 IBCF发送保 活标识; P-CSCF或 IBCF判断要注销用户, 则通知 S-CSCF注销用户。
下面将结合附图及实施例对本发明的技术方案进行更详细的说明。 图 2是本发明的 IMS注册流程示意图一, 描述了 UE-A向归属网进行 IMS注册的过程,以及 UE- A在 CS域发起会话后 AS通知 S-CSCF和 P-CSCF 保活用户信息的过程, 其描述如下:
步骤 201~210、 与图 1的步骤 101~110相同;
步骤 211、 UE-A在 CS域发起语音会话的建立 , 比如发送 SETUP (建 立) 消息; 步驟 212、 CS域的移动交换控制服务器 (MSC Server ) 收到 UE-A的 建立呼叫消息, 向 UE-A的归属域 S-CSCF发送 IMS的呼叫消息, 比如发 送 INVITE (邀请 ) 消息, 呼叫消息中携带 UE-A的号码或关联号码信息; 步骤 213、 S-CSCF转发呼叫消息给 AS;
步骤 214、 AS向远端转发呼叫消息, 并在收到远端的呼叫响应消息后 向 S-CSCF发送呼叫响应消息, 比如发送 "200 OK" 消息;
步骤 215、 S-CSCF转发呼叫响应消息给 MSC Server;
步驟 216、 MSC Server向 UE-A发送 CS域的呼叫响应消息, 比如发送 ANM (应答) 消息;
至此, UE- A和远端建立了 CS会话。
步骤 217、 与步骤 213同时, 或与步骤 214同时, AS根据 UE-A的号 码或关联号码信息关联到用户的 IMS注册用户标识, 并向 S-CSCF发送保 活通知消息, 比如发送 INFO (信息) 消息, 保活通知消息中携带 UE-A的 IMS注册用户标识和要求保活操作的标识, 或者向归属用户服务器( HSS ) 或归属位置寄存器( HLR )发送保活通知消息并由 HSS或 HLR通知 S-CSCF; 本实施例使用 UE-A做主叫来说明, 因此号码信息为主叫号码信息,如 果 UE-A是被叫, 则号码信息为被叫号码信息。
步骤 218、 S-CSCF停止重注册定时器, 并向 P-CSCF转发保活通知消 息, P-CSCF收到保活通知消息, 停止重注册定时器;
步驟 219、 UE-A在 CS域终止语音会话, 比如发送 RELEASE (释放 ) 消息;
步骤 220、 MSC Server收到 UE-A的终止会话消息, 向 UE-A的归属域 S-CSCF发送 IMS的终止请求, 比如发送 BYE (挂断) 消息;
步骤 221、 S-CSCF转发终止请求给 AS;
步骤 222、 AS向远端转发终止请求, 并在收到远端的终止响应消息后 向 S-CSCF发送终止响应消息, 比如发送 "200 OK" 消息; 步骤 223、 S-CSCF转发终止响应消息给 MSC Server;
步骤 224、 MSC Server向 UE-A发送 CS域的终止响应消息, 比如发送 RELEASE Ack (释放确认) 消息;
至此, UE-A和远端的 CS会话结束了。
步骤 225、 与步骤 221同时, 或与步骤 222同时, AS向 S-CSCF发送 撤销保活通知消息, 比如发送 INFO (信息)消息, 撤销保活通知消息中携 带 UE-A的 IMS注册用户标识和要求撤销保活操作的标识, 或者向 HSS或 HLR发送措 i销保活通知消息并由 HSS或 HLR通知 S-CSCF;
步骤 226、 S-CSCF重启重注册定时器, 并向 P-CSCF转发撤销保活通 知消息, P-CSCF收到撤销保活通知消息, 重启重注册定时器。
图 3是本发明的 IMS注册流程示意图二, 描述了 UE-A向归属网进行 IMS注册的过程, 以及 UE-A在发生故障没能按时执行 IMS重注册后 AS 通知 S-CSCF和 P-CSCF注销用户的过程, 其描述如下:
步驟 301、 UE-A在 PS域附着或获取 IP地址时会获得 P-CSCF的地址, 而后 UE-A向 P-CSCF发送注册请求, 比如发送 REGISTER (注册) 消息, 注册请求中携带保活时间间隔和 /或重注册时间间隔、 用户标识信息和用户 联系地址, 保活时间间隔足够长(比如 24小时), 使得 UE有足够的时间完 成 CS会话 ( CS会话本身具有时限, 比如 12小时, 超过这个时限网络会释 放该 CS会话 ), 保活时间间隔可以用携带原重注册时间间隔的方式携带, 即让 P-CSCF和 /或 S-CSCF将保活时间间隔认为是重注册时间间隔, 从而 起到保活作用;
步骤 302、 P-CSCF根据用户标识信息 UE- A判断用户的归属网络, 而 后向归属注册器 S-CSCF转发注册请求, 转发的注册请求中进一步携带 P-CSCF的信息, 使得归属网能将后续对该用户的终呼转发给该 P-CSCF, P-CSCF在转发的注册请求中携带保活时间间隔和 /或重注册时间间隔,其中 重注册时间间隔从 UE发送的注册请求中获取, 保活时间间隔可以是从 UE 发送的注册请求中获取, 也可以由 P-CSCF设置,保活时间间隔可以用携带 原重注册时间间隔的方式携带,即让 S-CSCF将保活时间间隔认为是重注册 时间间隔, 从而起到保活作用;
步骤 303~306、 与图 1的步骤 103~106相同;
步骤 307、 S-CSCF使用该用户的私钥计算挑战响应值, 并比较其与 UE-A发送过来的挑战响应值是否相同, 如相同则为合法用户, 不同则为非 法用户, 用户为合法用户时, S-CSCF返回注册响应消息给 UE-A, 比如发 送 "200 OK" 消息, 注册响应消息中携带保活时间间隔和 /或重注册时间间 隔,如果 UE-A或 P-CSCF使用发送重注册时间间隔相同的方式发送保活时 间间隔, S-CSCF会把保活时间间隔认为是重注册时间间隔, S-CSCF可不 修改该时间间隔;
步骤 308、 P-CSCF转发注册响应消息给 UE-A, 并记录下该用户标识 相关的保活时间间隔 (如果保活时间间隔采用与重注册时间间隔相同的方 式发送, P-CSCF保存重注册时间间隔的操作实际是保存了保活时间间隔)。
至此, UE-A完成向 IMS网络的注册, P-CSCF得知网络已认证该用户 为合法用户 ,就可以使用该用户的联系地址与 UE-A协商安全信息, 即建立 安全传输通道的信息, 从而确保 UE-A在不信任的网络中的安全数据传输。
P-CSCF和 S-CSCF按保活时间间隔保留用户信息, 在收到重注册请求 后重启定时器, 其操作与图 1 中的步骤 111~116相同, 只是使用的是保活 时间间隔而非重注册时间间隔。
步骤 309、 与步骤 307同时, S-CSCF向 AS发送注册通知, 比如发送 REGISTER消息给 AS, 注册通知可携带重注册时间间隔;
步骤 310、 AS向 S-CSCF返回注册通知响应消息, 比如发送 "200 OK" 消息;
步骤 311、 UE-A可以向 AS请求网络规定的重注册时间间隔, 比如发 送 HTTP request;
步骤 312、 AS 返回网络规定的重注册时间间隔, 比如发送 HTTP response;
至此, UE-A 和网络协商好了重注册时间间隔, 如果没有执行步骤 310-311 , 则 UE-A和 AS可以使用预配置的重注册时间间隔, 或网络使用 UE-A发送的重注册时间间隔。
以下为 UE-A故障时的处理。 UE-A如果有 CS业务, MSC Server会向 AS或通过 AS发起呼叫, 从而 AS就可判断用户是否有 CS会话。
步骤 313、 UE-A发生故障, 不能执行重注册操作, 则 AS的重注册定 时器超时, AS判断此时 UE-A没有相关的 CS会话, 从而判断 UE-A因故 障不能执行重注册操作, 而非因进行 CS会话而不能执行重注册操作; 步骤 314、 AS向 S-CSCF发送注销消息, 比如发送 REGISTER消息, expire字段设置为 0, 或者 AS通知 HSS或 HLR该用户需要注销, 比如更 新 HSS或 HLR中的用户数据, 将注册相关信息删除, 则 HSS或 HLR向 S-CSCF发送注销消息, 比如 DeRegister消息;
步骤 315、 S-CSCF注销用户数据, 并向 P-CSCF发送注销消息, 比如 发送 NOTIFY消息, P-CSCF收到注销消息后注销用户。
图 4是本发明的 IMS注册流程示意图三, 描述了 UE-A向归属网进行
IMS注册的过程, 以及 UE-A在发生故障没能按时执行 IMS重注册后 IBCF (或 P-CSCF ) 通知 S-CSCF注销用户的过程, 其描述如下:
步骤 401、 UE-A在 PS域附着或获取 IP地址时会获得 P-CSCF的地址, 而后 UE-A向 P-CSCF发送注册请求, 比如发送 REGISTER (注册) 消息, 注册请求中携带重注册时间间隔、 用户标识信息和用户联系地址; 步驟 402、 P-CSCF根据用户标识信息 UE- A判断用户的归属网络, 而 后决定是否需要转发注册请求给 IBCF, 如果不需要则将注册请求发给 S-CSCF, 本实施例 P-CSCF决定将消息转发给 IBCF, 转发的注册请求中进 一步携带 P-CSCF 的信息, 使得归属网能将后续对该用户的终呼转发给该 P-CSCF, P-CSCF在转发的注册请求中携带重注册时间间隔, 其中重注册 时间间隔从 UE发送的注册请求中获取;
步骤 403、 IBCF向归属注册器 S-CSCF转发注册请求;
步驟 404、 若 S-CSCF决定要对该用户认证以确保其是合法用户, 则向 UE-A发送认证挑战消息, 比如发送 " 401 Unauthorized" 消息, 认证挑战消 息中携带随机挑战值, 如果步驟 402中 P-CSCF将注册清求发给 IBCF, 则 要求该认证挑战消息途经 IBCF, 否则要求该认证挑战消息途经 P-CSCF, 本实施例中, S-CSCF要求该认证挑战消息途经 IBCF;
步骤 405、 IBCF转发该认证挑战消息给 P-CSCF;
步骤 406、 P-CSCF转发该认证挑战消息给 UE- A;
步驟 407、 UE-A使用私钥计算挑战值的响应值, 然后重新发送注册请 求, 该注册请求携带挑战响应值;
步骤 408、 若步骤 402中 P-CSCF将注册请求发给 IBCF, 则 P-CSCF 转发该注册请求给 IBCF,否则 P-CSCF转发该注册请求给 S-CSCF,本实施 例中, P-CSCF转发该注册请求给 IBCF;
步驟 409、 IBCF转发该注册请求给 S-CSCF;
步骤 410、 S-CSCF使用该用户的私钥计算挑战响应值, 并比较其与 UE-A发送过来的挑战响应值是否相同, 如相同则为合法用户, 不同则为非 法用户, 用户为合法用户时, S-CSCF返回注册响应消息给 UE-A, 比如发 送 "200 OK" 消息, 注册响应消息中携带保活标识和重注册时间间隔, 保 活标识可以是保活时间间隔,如果携带的是保活标识,则 S-CSCF停止该用 户的重注册定时器,如果携带的是保活时间间隔, 则 S-CSCF使用该保护时 间间隔作为该用户的重注册时间间隔,如果步骤 402中 P-CSCF将注册请求 发给 IBCF, 则 S-CSCF要求该注册响应消息途经 IBCF, 否则要求该注册响 应消息途经 P-CSCF,本实施例中, S-CSCF要求该注册响应消息途经 IBCF; 步骤 411、 IBCF收到注册响应消息, 记录下重注册时间间隔, 然后转 发注册响应消息给 P-CSCF;
步骤 412、 P-CSCF收到注册响应消息, 根据保活标识停止用户的重注 册定时器, 或者, 如果保活标识为保活时间间隔, 则使用该保活时间间隔 代替重注册时间间隔, P-CSCF转发注册响应给 UE-A。
至此, UE-A完成向 IMS网络的注册, P-CSCF得知 IMS网络已认证该 用户为合法用户,就可以使用该用户的联系地址与 UE-A协商安全信息, 即 建立安全传输通道的信息,从而确保 UE-A在不信任的网络中的安全数据传 输。
以下为 UE-A故障时的处理。 UE-A如果有 CS业务, MSC Server根据 配置会通过 P-CSCF或 IBCF发起呼叫, 从而 P-CSCF或 IBCF就可判断用 户是否有 CS会话, 本实施例 MSC Server会通过 IBCF发起呼叫。
步骤 413、 UE-A发生故障, 不能执行重注册操作, 则 IBCF的重注册 定时器超时, IBCF判断此时 UE-A没有相关的 CS会话, 从而判断 UE-A 因故障不能执行重注册操作, 而非因进行 CS会话而不能执行重注册操作; 如果步骤 402中 P-CSCF将注册请求发给 S-CSCF,且 MSC Server是通 过 P-CSCF发起呼叫, 则由 P-CSCF执行以上判断。
步骤 414、 IBCF向 S-CSCF发送注销消息, 比如发送 REGISTER消息, expire字段设置为 0;
步骤 415、可选的, IBCF还向 P-CSCF发送注销消息,比如发送 NOTIFY 消息, P-CSCF收到注销消息后注销用户。 如果步骤 402中 P-CSCF将注册请求发给 S-CSCF,且 MSC Server是通 过 P-CSCF发起呼叫, 则 P-CSCF无需执行步骤 415。
本发明中, IMS注册的注册控制方法系统, 包括: AS用于判断要控制 用户的注册时, 通知 S-CSCF对用户的注册执行控制操作; S-CSCF用于通 知 P-CSCF对用户的注册执行控制操作; 或者,
S-CSCF用于收到用户的注册请求, 向 P-CSCF、或 P-CSCF和 IBCF发 送保活标识; P-CSCF或 IBCF用于判断要注销用户, 则通知 S-CSCF注销 用户。
本领域普通技术人员可以理解实现上述实施例方法携带的全部或部分 步骤是可以通过程序来指令相关的硬件完成, 所述的程序可以存储于一种 计算机可读存储介质中, 该程序在执行时, 包括方法实施例的步骤之一或 其组合。
另外, 在本发明各个实施例中的各功能单元可以采用硬件的形式实现, 也可以釆用软件功能模块的形式实现。 所述集成的模块如果以软件功能模 块的形式实现并作为独立的产品销售或使用时, 也可以存储在一个计算机 可读取存储介质中。
上述提到的存储介质可以是只读存储器, 磁盘或光盘等。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可 轻易想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明 的保护范围应以权利要求所述的保护范围为准。

Claims

权利要求书
1. 一种注册控制方法, 其特征在于, 包括:
应用服务器(AS )判断要控制用户的注册时, 通知服务呼叫会话控制 功能( S-CSCF )对所述用户的注册执行控制操作;
所述 S-CSCF通知代理呼叫会话控制功能( P-CSCF )对所述用户的注 册执行控制操作。
2.根据权利要求 1所述的方法,其特征在于,所述 AS通知所述 S-CSCF 的步骤为:
所述 AS通知归属用户服务器( HSS )或归属位置寄存器( HLR )控制 所述用户的注册,所述 HSS或 HLR通知所述 S-CSCF对所述用户执行控制 操作。
3. 根据权利要求 1所述的方法, 其特征在于:
所述控制为保活、 或撤销保活、 或注销。
4. 根据权利要求 3所述的方法, 其特征在于, 所述控制为保活、 或撤 销保活时, 该方法还包括:
所述 S-CSCF和所述 P-CSCF收到对所述用户的注册执行保活操作的通 知时, 停止所述用户的重注册定时器, 收到对所述用户的注册执行 :销保 活操作的通知时, 启动所述用户的重注册定时器。
5. 根据权利要求 3所述的方法, 其特征在于, 所述控制为保活、 或撤 销保活时, 所述 AS 判断要保活用户的注册或 销保活用户的注册的步骤 为:
所述 AS判断所述用户有电路交换(CS )会话, 则要保活所述用户的 注册;
所述 AS判断所述用户的 CS会话终止,则要撤销保活所述用户的注册。
6. 根据权利要求 3所述的方法, 其特征在于, 所述控制为注销时, 所 述 AS判断要注销用户的注册的步骤为:
所述 AS的针对所述用户的重注册定时器超, 并且所述用户无 CS会话 时, 则要注销所述用户的注册。
7. 根据权利要求 5或 6所述的方法, 其特征在于, 所述 AS判断所述 用户是否有 CS会话的步骤为:
所述 AS通过所述用户的 IP多媒体子系统( IMS ) 注册用户标识是否 与 CS会话号码信息有关联判断所述用户是否有 CS会话。
8. 根据权利要求 3所述的方法, 其特征在于, 所述控制为注销时, 所 述 AS通知所述 S-CSCF对所述用户的注册执行注销操作之前还包括: 所述用户的终端将保活时间间隔和 /或重注册时间间隔通过所述
P-CSCF发送给所述 S-CSCF。
9. 根据权利要求 3所述的方法, 其特征在于, 所述控制为注销时, 所 述 AS通知所述 S-CSCF对所述用户的注册执行注销操作之前还包括: 所述 P-CSCF 将保活时间间隔和 /或重注册时间间隔发送给所述 S-CSCF。
10. 根据权利要求 3 所述的方法, 其特征在于, 所述控制为注销时, 所述 AS通知所述 S-CSCF对所述用户的注册执行注销操作之前还包括: 所述 S-CSCF将重注册时间间隔发送给所述 AS。
11. 根据权利要求 3 所述的方法, 其特征在于, 所述控制为注销时, 所述 AS通知所述 S-CSCF注销所述用户之前还包括:
所述用户的终端与所述 AS协商重注册时间间隔。
12. 一种注册控制方法, 其特征在于:
S-CSCF收到用户的注册倚求, 向 P-CSCF、或 P-CSCF和 IBCF发送保 活标识;
所述 P-CSCF或所述 IBCF判断要注销所述用户, 则通知所述 S-CSCF 注销所述用户。
13. 根据权利要求 12所述的方法, 其特征在于, 该方法还包括: 所述 IBCF判断要注销所述用户, 则通知所迷 P-CSCF注销所述用户。
14. 根据权利要求 12所述的方法, 其特征在于, 所述 P-CSCF或所述 IBCF判断要注销所述用户的步骤为:
所述 P-CSCF或所述 IBCF的针对所述用户的重注册定时器超时, 并判 断所述用户无 CS会话, 则要注销所述用户。
15. 根据权利要求 14所述的方法, 其特征在于, 所述 P-CSCF或所述 IBCF判断所述用户是否有 CS会话的步骤为:
所述 P-CSCF或所述 IBCF通过所述用户的 IMS注册用户标识是否与
CS会话号码信息有关联判断所述用户是否有 CS会话。
16. 根据权利要求 12所述的方法, 其特征在于, 所述向 P-CSCF、 或 P-CSCF和 IBCF发送保活标识之前还包括:
所述 S-CSCF停止所述用户的重注册定时器。
17. 根据权利要求 12所述的方法, 其特征在于, 该方法还包括: 所述 P-CSCF收到保活标识, 停止所述用户的重注册定时器。
18. 根据权利要求 12所述的方法, 其特征在于:
所述保活标识是保活时间间隔。
19. 根据权利要求 18所述的方法, 其特征在于, 该方法还包括: 所述 S-CSCF使用所述保活时间间隔作为所述用户的重注册时间间隔。
20. 根据权利要求 18所述的方法, 其特征在于, 该方法还包括: 所述 P-CSCF收到保活时间间隔,使用所述保活时间间隔作为所述用户 的重注册时间间隔。
21. 一种注册控制系统, 其特征在于, 包括:
AS, 用于判断要控制用户的注册时, 通知 S-CSCF对用户的注册执行 控制操作;
S-CSCF, 用于通知 P-CSCF对用户的注册执行控制操作。
22. —种注册控制系统, 其特征在于, 包括:
S-CSCF, 用于收到用户的注册请求, 向 P-CSCF、 或 P-CSCF和 IBCF 发送保活标识;
P-CSCF或 IBCF, 用于判断要注销用户, 则通知 S-CSCF注销用户。
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CN101548567A (zh) * 2006-12-05 2009-09-30 艾利森电话股份有限公司 用于控制接入域转换、网络节点、用户终端的方法和计算机程序产品

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