[go: up one dir, main page]

WO2008022542A1 - Procédé et système de transfert d'informations de sélection de domaine d'utilisateur appelé - Google Patents

Procédé et système de transfert d'informations de sélection de domaine d'utilisateur appelé Download PDF

Info

Publication number
WO2008022542A1
WO2008022542A1 PCT/CN2007/002417 CN2007002417W WO2008022542A1 WO 2008022542 A1 WO2008022542 A1 WO 2008022542A1 CN 2007002417 W CN2007002417 W CN 2007002417W WO 2008022542 A1 WO2008022542 A1 WO 2008022542A1
Authority
WO
WIPO (PCT)
Prior art keywords
session
selection information
domain selection
domain
called user
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2007/002417
Other languages
English (en)
Chinese (zh)
Inventor
Peng Zhao
Zhaohui Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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
Publication of WO2008022542A1 publication Critical patent/WO2008022542A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]

Definitions

  • the present invention relates to an IMS (IP Multimedia Subsystem) technology, and in particular, to a method and system for transmitting a called user domain selection information.
  • IMS IP Multimedia Subsystem
  • CS Circuit Switched, Circuit Switched
  • CDMA Code Division Multiple Addressing
  • Voice call continuity refers to an ongoing voice session on a multimode terminal that can be switched between different network domains.
  • a centralized point in the network is needed to implement the control.
  • VCC Voice Call Continuity
  • the IMS architecture mainly includes the following functional entities:
  • VCC UE Voice Call Continuity, voice call continuity user equipment
  • VMSC Vehicle Mobile Switching Center
  • GMSC Gateway Mobile Switching Center
  • MGCF Media Gateway Control Function
  • HSS Home Subscriber Server, Home Subscriber Server
  • gsmSCF Service Control Function
  • PLMN/PSTN Public Land Mobile Network/Public Switched Telephone Network, shared land mobile network/shared switched telephone network
  • CSCF Cluster Session Control Function
  • P-CSCF Pracy-CSCF, Proxy CSCF
  • I-CSCF nten-ogating-CSCF, Query CSCF
  • S-CSCF Seiving-CSCF, Yueliangwu CSCF
  • VCC UE A terminal that has VCC services, and has the capability of multiple domains to access VCC services.
  • MGCF An entity that interworks between a CS or PSTN user and an IMS user, responsible for the conversion of ISUP signaling and SIP signaling;
  • P-CSCF a functional entity that provides access services for IMS users
  • I-CSCF Query server for IMS domain registration and call provisioning query service
  • S-CSCF A functional entity that performs session services in the IMS domain.
  • the functional entities are connected by corresponding standard interfaces, for example: A/Iu, Gm, CAP, ISUP, Mg, Mw, etc.
  • 3 GPP 3rd Generation Partnership Project, 3rd Generation Partnership Project
  • 3GPP2 3rd Generation Partnership Project2
  • VCC application entities Add the following set of functional entities in the IMS domain and the CS domain, collectively referred to as VCC application entities:
  • DTF Dense Tranfer Function entity (FE-A in Figure 1), It is the centralized control point in the above network. Responsible for anchoring the call in the IMS domain, switching the Si S3 ⁇ 4 ⁇ 4 2 7 control; also responsible for maintaining the domain information of the active session, selecting services for subsequent domains;
  • the CS domain adaptation function entity (FE-B in Figure 1) is responsible for providing a proxy for the CS originated call and the call to the CS domain to enter the IMS network;
  • the CAMEL service application entity (FE-C in Figure 1) is responsible for redirecting circuit domain calls to the IMS domain for call anchoring control.
  • the FE-C will be combined with the gsmSCF in the figure and embodied as an SCP (Service Control Point) in the circuit domain;
  • DSF Domain Selection Function entity (FE-D in Figure 1), responsible for obtaining VCC user active session connection domain selection information from the DTF according to the user's registration status in the IMS domain, the operator's policy, the user's Various strategies, such as preferences, capabilities of the terminal, and the ability of the IP-CAN to carry real-time voice services, make decisions and control the routing of calls to selected connection domains.
  • FE-D Domain Selection Function entity
  • the process of selecting the connection domain in the session of the ordinary VCC user is as shown in FIG. 2, and includes the following steps:
  • the S-CSCF of the called user receives the initial session establishment request, and the URI (Universal Resource Identifier) in the request may be a telephone uniform resource identifier Tel URI or a SIP (Session Initiation Protocol) unified resource.
  • Identifier SIP URI form ;
  • the S-CSCF forwards the invitation (INVITE) sent by the VCC user to the DTF for processing according to the user subscription information obtained in the registration process.
  • the DTF determines that the call belongs to the called process, and determines the anchor according to the policy.
  • the DTF forwards the INVITE back to the S-CSCF.
  • the S-CSCF determines, according to the user subscription information obtained in the registration process, if the VCC user session is a session, the DSF function is invoked, and the INVITE is forwarded to the DSF.
  • the DSF selects the network domain registered by the called user according to the related information to connect the call; the related information of the general judgment includes the registration status of the user in the network, the connection domain information of the VCC service activity call, the policy of the operator, the preference of the user, Terminal capabilities and IP-CAN (IP Connectivity Access Network, IP connection access network, where: IP is Internet rotocoi, Internet Protocol) The ability to carry real-time voice services.
  • the related information of the general judgment includes the registration status of the user in the network, the connection domain information of the VCC service activity call, the policy of the operator, the preference of the user, Terminal capabilities and IP-CAN (IP Connectivity Access Network, IP connection access network, where: IP is Internet rotocoi, Internet Protocol) The ability to carry real-time voice services.
  • the DSF also needs to convert the number of the INVITE message to the IMS domain number.
  • the DSF returns the INVITE to the S-CSCF to continue processing.
  • the S-CSCF continues to forward the INVITE to the selected connection domain according to the INVITE.
  • the first problem in the foregoing process is that the DSF does not solve the problem of how to process the session, that is, the session connection of the called user in this session. Domain information is notified to the DTF. In this way, the DTF cannot know that the currently anchored call is finally connected in that domain.
  • the DTF anchor if the domain selection process is required, the DTF cannot provide the exact connection domain of the previously anchored call, resulting in DSF. There is no guarantee that two calls will be connected in the same domain. According to the processing of VCC, there is no guarantee that some supplementary services are invoked, which affects the user's business experience.
  • the fact that a call is connected in a different domain may mean different charges to the user.
  • the DTF entity acts as a centralized control point and is responsible for charging the VCC user's service invocation process. If the DTF cannot obtain the final domain selection result, the accounting information cannot be guaranteed correctly, which may cause serious consequences for the user's complaints to the network operator. .
  • the second problem in the above process is that the selected session active domain selection information saved on the DTF is not transmitted to the DSF.
  • the DSF cannot ensure that the call and the DTF have been anchored.
  • the scheduled active call is connected in the same domain. Therefore, some supplementary services involving multiple sessions/calls, such as call waiting, cannot be provided in a certain domain, which affects the user's service experience.
  • the domain selection function (DSF, embodied in the FE-D entity) in VCC is only the selection of the connection domain for the call of the voice component.
  • DSF domain selection function
  • multiple media components such as video, data, voice, text, etc.
  • Some services and applications require the selection of a connection domain for different components of a multimedia call, such as CSI (Crystal of CS and IMS services).
  • the CSI is a technology for providing a call synthesis of a real-time media carried by a CS and a non-real-time media carried by an IMS to a user, that is, a user can simultaneously use a CS domain and an IMS domain bearer. Users pass CSI technology What you get is a multimedia call experience.
  • the CSI-AS CSI Application Server
  • the CSI-AS needs to split the received media session into the real-time media component and the non-real-time media component in the CS and IMS domains respectively, and then provide the terminal synthesis. To the user.
  • the called domain connection process in the multimedia VCC service is as shown in FIG. 3, and includes the following steps:
  • the S-CSCF of the called user receives the multimedia initial session establishment request.
  • S302 The S-CSCF forwards the INVITE to the DTF for processing according to the service logic.
  • the DTF determines that the call belongs to the called process, and determines the anchor according to the policy.
  • the DTF forwards the INVITE back to the S-CSCF.
  • the S-CSCF determines to invoke the DSF function according to the service logic, and forwards the INVITE to the DSF.
  • the DSF selects a network domain registered by the user according to the foregoing information to connect the call.
  • the DSF will return to the INVITE after processing to the S-CSCF to continue processing;
  • the S-CSCF forwards the INVITE sent by the VCC user to the CSI-AS for processing according to the user subscription information obtained in the registration process;
  • the CSI-AS splits the media component in the multimedia session, and the non-real-time media component is connected in the IMS domain, and the real-time media component is connected in the CS domain;
  • S3010-S301 K CSI-AS initiates call setup to the two domains through the S-CSCF according to the split result.
  • the DSF needs to care about the situation in which the different media components in the session eventually connect to the domain, not just the connection domain of the session.
  • the problem is that a multimedia session may be connected in different domains after being split by CSI-AS, and the DSF sees a multimedia session, which requires a session aggregation point (ie, CSI-AS) containing different media components to process.
  • CSI-AS session aggregation point
  • the mechanism for selecting information notification to the DSF does not give the mechanism for DSF notification to the DTF, and the mechanism by which the DTF passes the user-related active session domain selection information to the DSF. Summary of the invention
  • the embodiment of the present invention provides the following technical solutions:
  • the called user domain selection information When the first function entity that knows the called user domain selection information receives the relevant initial session message, the called user domain selection information is written into the related initial session message, and then the related initial session message is forwarded;
  • the second functional entity receives the related initial session message, and extracts the called user domain selection information therefrom.
  • the called user domain selection information is domain selection information of a related active session that has been established by the called user of the current session;
  • the related initial session message is an initial session establishment request message.
  • the first functional entity is a domain handover control function entity DTF;
  • the second functional entity includes: a domain selection function entity DSF and/or a circuit switched and IP multimedia subsystem synthesis application server CSI-AS.
  • the DSF selects the current session connection domain for the called user by referring to the related active session domain selection information; and/or the CSI-AS selects the media component selection in the current session for the called user by referring to the related active session domain selection information. Continue the domain.
  • the called user domain selection information is domain selection information related to the current session being established; the related initial session message is an initial session establishment response message.
  • the domain selection information involved in the session includes the session connection domain information selected by the DSF; and:
  • the first functional entity is a DSF.
  • the domain selection information involved in the session includes the media component connection domain information in the current session selected by the CSI-AS; and:
  • the second functional entity includes: CSI-AS.
  • the functional entity that learns the domain selection information involved in the current session and writes the domain selection information to the initial session establishment response message further includes: a control gateway function entity MGCF or a proxy call session control function entity P-CSCF.
  • the second functional entity includes: a DTF.
  • the called user domain selection information is written in a message body of the associated initial session message or in a header field already defined in the message header or in a newly defined header field in the message header.
  • a system for transmitting the called user domain selection information in a session establishment process comprising: a first functional entity, configured to write the called user domain selection information into the related initial session message after learning the called user domain selection information Then, the related initial session message is forwarded to the lower-level functional entity; the second functional entity is configured to extract the called user domain selection information from the received related initial session message.
  • the first major structure is:
  • the first function entity is a DTF, and is used to write the domain selection information of the related active session that has been established by the called user of the session to the initial session establishment request message, and then forward the initial session establishment request message;
  • the second functional entity is a DSF and/or a CSI-AS, and is used to extract domain selection information of a related active session of the called user from the initial session establishment request message.
  • the second main structure is:
  • the first function entity includes: a first response message processing unit, configured to write the learned domain selection information related to the current session into an initial session establishment response message, and then forward and process the initial session establishment response message;
  • the second function entity includes: a second response message processing unit, configured to extract domain selection information related to the current session from the initial session establishment response message, and then forward and process the initial session establishment response message.
  • the embodiment of the invention further provides a method for transmitting the called user domain selection information, which includes the following steps. Feed DTF DSF to VCC user session and / or CSI-AS called user and storm f 117 DSF or rear / CSI-AS in the process of establishing VCC user session or session is established, related to the called subscriber according to this session The domain selection information is sent to the DTF.
  • a system for transmitting the called user domain selection information by implementing the above method comprising:
  • the DSF and/or the CSI-AS are used to send the related called user domain selection information related to the session to the DTF during the establishment of the VCC user session or after the session is established.
  • the technical solution of the embodiment of the present invention writes the session domain selection information into the relevant initial session message by the function entity that knows the session domain selection information, and delivers the session domain selection information to the related functional entity that the message subsequently passes.
  • the active session domain selection information of the called user is transmitted through the initial session request message, and the domain selection information involved in the session is transmitted by the establishment response message, thereby realizing the delivery of the called user domain selection information in the session establishment process.
  • the function entity performing domain selection or media splitting may select the session or the connection domain of each media component by referring to the called user active session domain selection information, thereby improving the rationality of the selection result; performing handover control and charging control After obtaining the user domain selection information, the functional entity can update the user's domain selection information at any time, thereby improving the success rate of the handover control and achieving accurate charging.
  • Figure 1 is a schematic diagram of an existing IMS architecture
  • FIG. 2 is a schematic diagram of a process of selecting a connection domain in a conventional VCC user session
  • FIG. 3 is a schematic diagram of a process of selecting a connection domain in an existing multimedia VCC user session
  • FIG. 4 is a schematic diagram of a main process of implementing Embodiment 1 for transmitting the session connection domain information according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a main process of Embodiment 3 for implementing the connection information of the session connection domain according to the embodiment of the present invention
  • FIG. 7 is a schematic diagram of a main process of implementing Embodiment 4 of transmitting the session connection domain selection information according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of a main flow of Embodiment 5 of implementing Embodiment 5 of transmitting user-related active session domain selection information according to an embodiment of the present invention; structure schematic diagram; main structure diagram;
  • FIG. 11 and 12 are schematic diagrams showing a specific structure of a first functional entity in the system shown in FIG. 10;
  • FIG. 13 is a schematic diagram of a specific structure of a second functional entity in the system shown in FIG. 10;
  • FIG. 14 is a schematic diagram of a main flow of a DTF directly subscribing to a DSF subscription session selection domain according to an embodiment of the present invention;
  • FIG. 15 is a schematic diagram of a main flow of a DTF directly subscribing to a CSI-AS for the session connection domain selection information according to an embodiment of the present invention
  • FIG. 16 is a schematic diagram of a main structure of a system for implementing a direct subscription method according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method for transmitting the called user domain selection information in a session establishment process, including the following steps:
  • the function entity that knows the called user domain selection information receives the relevant initial session message sent in a stepwise manner, the called user domain selection information is written into the related initial session message, and then the related initial session message is forwarded and processed;
  • the functional entity that subsequently writes the associated initial session message of the called user domain selection information extracts the called user domain selection information from the related initial session message, and then continues to forward the relevant processing. Start session message.
  • the technical solution provided by the embodiment of the present invention includes the following two steps:
  • the first step in the initial session establishment request process of sending the voice call continuous VCC user session step by step, the function entity that learns the relevant domain selection information involved in the session receives the initial session establishment response message returned by the level Translating the relevant session selection information related to the current session into the initial session establishment response message, and then forwarding the initial session establishment response message;
  • the functional entity that has passed the initial session establishment response message, and the functional entity that does not know the relevant domain selection information involved in the current session extracts the current session from the received initial session establishment response message. After the related domain selection information, the initial session establishment response message is forwarded and processed.
  • the relevant domain selection information involved in this session includes: the session connection domain information selected by the DSF and the media component connection domain information selected by the CSI-AS for each media component in the session.
  • the connected user connection domain selected by the DSF is IMS, and the present embodiment implements the delivery of the session connection domain information selected by the DSF.
  • the DSF selects the IMS as the session connection domain, and processes the INVITE message according to the session connection domain, and then sends the INVITE message to the S-CSCF;
  • the SIP session signaling used by the process can write the session connection domain information into the SIP message header or message body in the INVITE message. If it is written in the message header, it can be written into the defined header field, for example. : Request-Disposition: IMS; Of course, you can also customize a dedicated header field to carry the session connection domain information.
  • the S-CSCF sends the INVITE message to the IMS domain, and receives the returned session establishment response message, for example, 183;
  • the S-CSCF returns a session establishment response message to the DSF.
  • S409 DSF establishment response message written in the selected session this session ⁇ 3 ⁇ 4 ⁇ 3 ⁇ 4 3 ⁇ 4 ⁇ 7 back to the S-CSCF?;
  • the SIP session signaling used by the process can write the session connection domain information into the SIP message header or the message body in the response message. If it is written in the message header, it can be written into the defined header field.
  • a dedicated header field can be customized to carry the session connection domain information, for example: Define a dedicated header field a: IMS/CS.
  • the S-CSCF forwards the session establishment response message that has been written to the session connection domain information to the DTF;
  • the S4011 ⁇ S4012 DTF extracts the session connection domain information from the corresponding location in the session establishment response message, and then continues to send a response message to the calling user terminal through the S-CSCF.
  • the response message may be a 183 message, or a 200 message, or both of the response messages may be performed according to the technical solution provided by the embodiment of the present invention.
  • Embodiment 2 The session is a multimedia session, and the DSF selects the IMS domain as the session connection domain, and the media component connection domain information selected by the CSI-AS component
  • the DSF selects the IMS domain as the session connection domain, and processes the INVITE message according to the selection result, and then sends the message to the S-CSCF;
  • the DSF can only select the IMS domain connection.
  • the SIP session signaling used by the process can write the session connection domain information into the SIP message header or message body of the INVITE message. If it is written in the message header, it can be written into the defined header field, for example: Request-Disposition: IMS; Of course, you can also customize a dedicated header field to carry the session connection domain information.
  • the S-CSCF forwards the INVITE message to the CSI-AS according to the service logic, and after receiving the request message, the CSI-AS splits the multimedia session, and selects the real-time media component to be connected in the CS domain, and the non-real-time media component Connected in the IMS domain, and then forwarded through the S-CSCF Subdivided INVITE message;
  • the SCSCF forwards the INVITE message to the CS domain and the IMS domain respectively.
  • S509 - S501K CSI-AS receives the response message, which may be from different domains, CSI-AS merge response message, and then adds the connection domain information of the multimedia component session in the response message, and the connection domain information is generally written into the SDP header field, and the description is In the partial header field of the video or audio service attribute, for example: Add a: IMS description in the header field part of the description of the video service attribute, and add a: CS description in the header field part of the description of the audio service attribute.
  • the DSF may also add the media component connection domain information selected by itself, and then forward the response message to the DTF through the S-CSCF;
  • the DSF can write the media component connection domain information into the SIP message header or the message body.
  • the DTF extracts the media component connection domain information from the corresponding location in the session establishment response message, and then continues to send the response message to the calling user terminal through the S-CSCF.
  • the response message includes two related domain selection information related to the session, one is the session access domain information selected by the DSF, and the other is the media component connection domain information selected by the CSI-AS, and the DTF is Finally, the media component connection domain information selected by the CSI-AS shall prevail.
  • the response message may be a 183 message, or a 200 message, or both of the response messages may be performed according to the technical solution provided by the embodiment of the present invention.
  • the MGCF may also write the corresponding connection domain information into the response message. in.
  • Embodiment 3 DSF selection The CS domain is the connected user connection domain.
  • the DSF selects the CS domain as the connection domain, and processes the INVITE message according to the selection result, and then sends the INVITE message to the S-CSCF;
  • the S-CSCF sends the INVITE message to the CS domain through the MGCF;
  • PCT CN2007/002417 The MGCF can learn that the connection domain selected by the DSF for the session includes the CS domain by using the forwarded INVITE message;
  • the MGCF After the MGCF receives the return session establishment response message of the CS domain, the MGCF writes the CS domain information in the response message, and returns the information to the S-CSCF.
  • the SIP session signaling used by the process can write the connection domain information into the SIP message header or message body of the response message. If it is written in the message header, it can be written into the defined header field, for example: header field p - visited-network-id: CS; Of course, you can also customize a dedicated header field to carry.
  • S608 The S-CSCF returns a session establishment response message to the DSF.
  • the DSF writes the selected session access domain information in the session establishment response message, and then returns the information to the S-CSCF.
  • the S-CSCF forwards the session establishment response message that has been written to the selected session access domain information to the DTF;
  • the S6011 ⁇ S6012 DTF extracts the session access domain information from the corresponding location in the session setup response message, and then continues to send the response message to the calling user terminal through the S-CSCF.
  • the response message may be a 183 message, or a 200 message, or both of the response messages may be performed according to the technical solution provided by the embodiment of the present invention.
  • the INVITE message and the corresponding response message exchanged between the S-CSCF and the IMS domain must be forwarded by the P-CSCF.
  • the P-CSCF can also write the IMS domain information. In the response message.
  • Example 4 DSF selection CS domain is the connected user connection domain
  • the S-CSCF sends an INVITE message to the IMS domain through the P-CSCF.
  • the P-CSCF writes the IMS domain information in the response message returned by the IMS domain and returns it to the S-CSCF.
  • the SIP session signaling used by the process can be written into the SIP message header or message body of the response message. If it is written in the message header, it can be written in the defined header field, for example: header field p-visited- Network-id: IMS; Of course, you can also customize a dedicated header field to carry.
  • the function entity of the related domain selection information When the function entity of the related domain selection information receives the initial session establishment response message, the related domain selection information related to the current session is written into the initial session establishment response message, and then forwarded, and the subsequent initial session establishment response message is received.
  • the entity may extract the relevant domain selection information related to the session from the received initial session establishment response message, thereby implementing the delivery of the relevant domain selection information.
  • the embodiment of the present invention can be implemented by the following two steps:
  • the function entity DTF of the active session domain selection information when receiving the initial session establishment request of the VCC user session forwarded in step, writes the selected active session domain selection information of the called user into the initial session establishment request, and then sends the information to the initial session establishment request.
  • the next-level functional entity DSF/CSI-AS after receiving the initial session establishment request, extracts the active session domain selection information of the called user, and then proceeds to process the initial session establishment request.
  • the called user related active session domain selection information includes session connection domain information of the related active session. If the called user includes a multimedia session in the related active session, the called user related active session domain selection information may further include media component connection domain information in the multimedia session.
  • Embodiment 5 The DTF uses the SIP header field to transmit related active session domain selection information to the DSF. As shown in FIG. 8, the following steps are included:
  • S801-S802 and S-CSCF receive the INVITE message and forward it to the DTF.
  • the DTF receives the INVITE message, writes the relevant active session domain selection information into the INVITE message, and then sends an INVITE message to the S-CSCF.
  • the S-CSCF forwards the message to the DSF, and the DSF can be based on the parameters in the from header field. Get information about the relevant active session domain selection.
  • Example 6 The DTF uses the SIP message body to transmit the relevant active session domain selection information to the DSF.
  • the specific steps are the same as the fifth embodiment.
  • the difference is that the message body is used to indicate the relevant active session domain selection information, and the content may include multiple active session identifiers and their locations.
  • the domain adds the following content of the boldface part to the message body:
  • the DTF can pass the domain selection information of the VCC user active session to the CSI-AS.
  • the system for implementing the session domain selection information in the embodiment of the present invention needs to include the following two functional entities:
  • the first functional entity 901 after learning the called user domain selection information, writes the called user domain selection information into the related initial session message, and then forwards and processes the related initial session message to the lower functional entity;
  • the second functional entity 902 after extracting the called user domain selection information from the received related initial session message, continues to forward and process the related initial session message.
  • the first function entity 901 is a DTF, and writes domain selection information of all related active sessions that have been established by the called user of the current session to the initial session establishment request message, and then forwards and processes the initial session establishment request message;
  • the second functional entity 902 is a DSF or a CSI-AS, and extracts domain selection information of all related active sessions of the called user from the initial session establishment request message.
  • the DTF 901 includes:
  • the first memory 9011 stores domain selection information of all related active sessions that have been established by the called user
  • the first request message processing unit 9012 extracts, from the first memory, the called user related active session domain selection information, and writes the initial session establishment request message, and then forwards and processes the initial session establishment request message;
  • the DSF or CSI-AS includes:
  • the second request message processing unit 9021 extracts the active user session domain selection information of the called user from the initial session establishment request message, and then forwards and processes the session establishment request message.
  • the session access domain information selected by the DSF or the media component access domain information selected by the CSI-AS is transmitted to the DTF, then:
  • the first function entity 901 includes: a first response message processing unit 10011, writes the learned domain selection information related to the current session into an initial session establishment response message, and then forwards and processes the initial session establishment response message;
  • the second functional entity 902 includes: a second response message processing unit 10021, extracting domain selection information related to the current session from the initial session establishment response message, and then forwarding and processing the initial session establishment response message.
  • the first function entity 901 is a DSF, and the DSF further includes: a session connection domain selection unit 10012, and the first response message processing unit 10011 is connected to select the session connection domain for the called user;
  • the first functional entity 1001 is a CSI-AS
  • the CSI-AS further includes: a media component connection domain selection unit 10013, connected to the first response message processing unit 10011, for each session in this session. Media components select different connection domains;
  • the second function entity 902 is a DTF
  • the DTF may further include: a second memory 10022, configured to store domain selection information related to the current session extracted by the second response message processing unit.
  • the DSF and the CSI-AS may be combined or set separately.
  • the function entity that knows the active session domain selection information of the called user writes the active session domain selection information of the called user in the initial session establishment request, and receives the function of the initial session establishment request.
  • the entity extracts the active session domain selection information of the called user from the initial session establishment request, so as to implement the delivery of the relevant active session domain selection information of the called user.
  • the embodiment of the present invention further provides a method for transmitting domain selection information, wherein the method for the DTF to subscribe to the session connection domain information to the DSF includes the following steps:
  • the DTF subscribes to the DSF to the session connection domain information of each session of the VCC user; , . , . , _ , ⁇ , , _ , , , , 1
  • the DSF selects the continuation of the continuation of the present session
  • the DSF sends the session connection domain information to the DTF during or after the establishment of each session, and needs to send the identifier of the session.
  • the above process can be implemented by using SIP messages or by using custom messages.
  • the process in which the DTF subscribes to the CSI-AS for each media component connection domain information includes:
  • the DTF subscribes to the CSI-AS for each media component connection domain information of each session of the VCC user.
  • the CSI-AS splits the multimedia session and selects each media component connection domain of the session in the process of establishing each session;
  • the CSI-AS sends the media component connection domain information to the DTF during or after the establishment of each session, and needs to send the identifier of the session.
  • a system for implementing the above method includes:
  • DTF subscribed to the DSF and/or CSI-AS for the called user domain selection information of the VCC user session; DSF and/or CSI-AS, related to the current session during the establishment of the VCC user session or after the session is established
  • the called user domain selection information is sent to the DTF.
  • the DTF 1601 includes:
  • the information subscribing unit 16011 subscribes to the DSF 1602 and/or the CSI-AS 1602 for related connection domain selection information of the VCC user session;
  • the information receiving unit 16012 receives the relevant connection domain selection information sent by the DSF 1602 and/or the CSI-AS 1602.
  • the DSF1602 or CSI-AS1602 includes:
  • connection domain selection unit 16021 if the subscriber is a DSF, the connection domain selection unit 16021 selects the current session connection domain for the VCC user session; if the subscriber is the CSI-AS, the connection domain selection unit 16021 selects the VCC user session.
  • the connection domain information of each media component in the session; the information sending unit 16022 sends the session connection selected by the connection domain selection unit 16021 to the DTF Renewal information or each media component is connected to the domain information.
  • the DTF 1601 subscribes to the relevant called user domain selection information to both the DSF 1602 and the CSI-AS 1602, the DSF 1602 and the CSI-AS 1602 are combined or set separately.
  • the DTF subscribes to the DSF to subscribe to the session connection domain information of each session of the VCC user, and the DSF selects the session connection domain of the current session in the process of establishing each session, and in each session.
  • the session connection domain information is sent to the DTF, thereby realizing the delivery of the session connection domain information.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé et un système de transfert d'informations de sélection de domaine d'utilisateur appelé, selon lesquels les informations de sélection de domaine de l'abonné appelé ne peuvent être échangées entre les entités fonctionnelles associées de l'état de la technique. Par le truchement de l'entité fonctionnelle qui a obtenu que les informations de sélection de domaine de session soient écrites dans le message de session de lancement associé, l'entité fonctionnelle transfère les informations de sélection de domaine de session aux entités fonctionnelles associées par lesquelles passe le message. Le transfert des informations de sélection de domaine de connexion à une session d'activité associée à l'utilisateur par le biais du message de demande de session de lancement, et le transfert des informations de sélection de domaine de connexion se rapportant à la session utilisateur courante par la création d'un message de réponse assurent le transfert des informations de sélection de domaine. Cela permet à l'entité fonctionnelle de sélection de domaine de choisir le domaine de connexion courant selon les informations de sélection de domaine de session d'activité, ce qui améliore le caractère rationnel du résultat choisi et le taux de réussite de commande de commutation de l'entité fonctionnelle de commutation de domaine, pour une facturation précise.
PCT/CN2007/002417 2006-08-16 2007-08-13 Procédé et système de transfert d'informations de sélection de domaine d'utilisateur appelé Ceased WO2008022542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610109836.0 2006-08-16
CN 200610109836 CN101128021A (zh) 2006-08-16 2006-08-16 被叫用户域选择信息传递方法及系统

Publications (1)

Publication Number Publication Date
WO2008022542A1 true WO2008022542A1 (fr) 2008-02-28

Family

ID=39095906

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/002417 Ceased WO2008022542A1 (fr) 2006-08-16 2007-08-13 Procédé et système de transfert d'informations de sélection de domaine d'utilisateur appelé

Country Status (2)

Country Link
CN (1) CN101128021A (fr)
WO (1) WO2008022542A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105630302A (zh) * 2015-08-07 2016-06-01 宇龙计算机通信科技(深圳)有限公司 用户域的切换方法、切换系统及移动终端

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1377559A (zh) * 1999-08-23 2002-10-30 摩托罗拉公司 域选择系统和方法
CN1802022A (zh) * 2005-09-30 2006-07-12 华为技术有限公司 在话音业务连续性业务中建立初始呼叫的方法及系统

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1377559A (zh) * 1999-08-23 2002-10-30 摩托罗拉公司 域选择系统和方法
CN1802022A (zh) * 2005-09-30 2006-07-12 华为技术有限公司 在话音业务连续性业务中建立初始呼叫的方法及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Voice Cell Continuity between CS and IMS", 3GPP TS 23.206 V1.1.0, 31 July 2006 (2006-07-31), pages 6 - 9 *

Also Published As

Publication number Publication date
CN101128021A (zh) 2008-02-20

Similar Documents

Publication Publication Date Title
EP1973283B1 (fr) Élément réseau d'interfonctionnement, système d'interfonctionnement entre le terminal csi et le terminal ims et procédé associé
EP1892897B2 (fr) Commande de routage interdomaine
CN101790897B (zh) 使能用于终止语音/视频呼叫的用户设备接入域选择
EP2208337B1 (fr) Déclenchement dynamique de signalisation i1-ps dans des services centralisés ims
US20100103888A1 (en) Circuit switching user agent system, communicating device, and service providing method used therefor
CN104202786B (zh) 一种呼叫路由方法及装置
KR20110050439A (ko) 원격통신 네트워크에서 매체 속성들에 기초한 선택적 호 포워딩을 위한 방법 및 시스템
CN1327680C (zh) 一种电路交换网络到ims网络呼叫路由的建立方法
CN100550864C (zh) 一种端到端信息交互的实现方法
US8320363B2 (en) Implementation method, system and device of IMS interception
CN101511072A (zh) 一种sip或ims网络中实现增强型一号通业务的方法
CN104168190A (zh) 一种呼叫路由方法及装置
WO2008040171A1 (fr) Procédé, système de domaine de commutation de circuits apercevant des informations de sessions multimédia du domaine ims
WO2009124512A1 (fr) Procédé de mise en œuvre pour commander une lecture de multimédia anticipé
CN1889565B (zh) 会话建立方法
WO2017185943A1 (fr) Procédé de communication et éléments de réseau utilisé dans le procédé de communication
CN101222478A (zh) 实现呼叫建立的方法、系统及装置
CN101577883B (zh) 通话连接方法、装置及系统
CN101102615A (zh) 一种ip多媒体子系统集中控制业务终呼的实现方法
CN101202956B (zh) Ip多媒体子系统会话回落到电路交换呼叫的实现方法
WO2008022542A1 (fr) Procédé et système de transfert d'informations de sélection de domaine d'utilisateur appelé
CN101330640B (zh) 一种ip多媒体子系统集中业务呼叫保持业务的实现方法
CN101115237B (zh) 在ip多媒体子系统集中控制业务中进行呼叫偏转的方法
CN101448011A (zh) 早媒体信息播放选择方法
CN101212450B (zh) 一种会话路由控制方法及装置和通信网络系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07785319

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07785319

Country of ref document: EP

Kind code of ref document: A1