WO2008080297A1 - Procédé, équipement et système pour mettre en rapport une session - Google Patents

Procédé, équipement et système pour mettre en rapport une session Download PDF

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Publication number
WO2008080297A1
WO2008080297A1 PCT/CN2007/003546 CN2007003546W WO2008080297A1 WO 2008080297 A1 WO2008080297 A1 WO 2008080297A1 CN 2007003546 W CN2007003546 W CN 2007003546W WO 2008080297 A1 WO2008080297 A1 WO 2008080297A1
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WO
WIPO (PCT)
Prior art keywords
session
identifier
message
csi
ims
Prior art date
Application number
PCT/CN2007/003546
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English (en)
Chinese (zh)
Inventor
Dongming Zhu
Hengliang Zhang
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 WO2008080297A1 publication Critical patent/WO2008080297A1/fr

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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
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/146—Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/148—Migration or transfer of sessions
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, apparatus, and system for associating a session, and a method for communicating associated session information.
  • IMS IP Multimedia Subsystem, IP Multimedia Subsystem
  • WCDMA Wide-Band Code Division Multiple Access
  • 3GPP R5/R6 3GPP R5/R6 standard
  • Packet voice and packet data providing a unified network of multimedia services and applications.
  • the IMS uses the IP packet domain as the bearer channel for its control signaling and media transmission, and uses the SIP (Session Initiation Protocol) protocol as the call control signaling.
  • SIP Session Initiation Protocol
  • IMS the IMS user subscription data is centrally managed in the HSS, and the service is uniformly provided by the application server AS.
  • the session control is completed by the S-CSCF (Serving Call Session Control Function), and the two are completely separated in the network structure, and the service passes through S.
  • -CSCF triggers to AS processing, and multiple ASs can work together.
  • the user accesses the IMS through the current local proxy node P-CSCF (Proxy Call Session Control Function), and the session and service control are completed by the home domain service node of the registered place, so the user can always obtain the same service at different access points. It realizes the separation of service management, session control and bearer access, and service provision independent of access and location.
  • CSI Circuit Switched
  • the existing standards only provide interoperable architecture and processes.
  • the CSI terminal acts as the calling party, and when the IMS terminal acts as the called party, the interworking is controlled in the architecture of the calling network, as shown in FIG. 1; the interworking is controlled in the architecture of the called network, as shown in FIG. 2 .
  • the voice session initiated by the terminal UE 1 is routed to the CSI AS, the same
  • the IMS session initiated by the terminal UE 1 is also routed to the CSI AS, and the CSI AS merges the two sessions into one, and then performs session exchange with the called terminal UE 2 by using a standard IMS procedure.
  • the CSI terminal acts as a calling party, and adds a voice call flow to the existing IMS session. As shown in FIG. 3, the following steps are included:
  • the terminal UE 1 initiates an MSRP (Message Session Relay Protocol) session request INVITE message to the terminal UE 2.
  • MSRP Message Session Relay Protocol
  • the calling network S-CSCF1 forwards the INVITE request to CSI AS1 based on iFC.
  • the CSI AS 1 initiates a RE-INVITE request to the terminal UE2, and the request adds MSRP media to the original media.
  • the RE-INVITE request arrives at S-CSCF2 along the initial session path.
  • the S-CSCF2 forwards the RE-INVITE request to the terminal UE2.
  • the terminal UE2 sends a 200 OK response message.
  • S-CSCF2 forwards 200 OK to S-CSCF1.
  • S-CSCF1 forwards 200 OK to CSI AS1.
  • the CSI AS generates a 200 OK response message for the MSRP session request and sends it to the S-CSCF1.
  • the S-CSCF1 forwards the 200 OK response message to the terminal UE1.
  • the embodiment of the invention provides a method, a device and a system for associating a session, which are used to solve the problem that the first session and the second session to be associated are not associated with each other, so that the CSI terminal and the IMS terminal cannot communicate with each other.
  • the embodiment of the present invention further provides a method for transmitting association session information, which is used to solve the problem that the prior art does not provide a delivery manner of associated session information.
  • the method for associating a session in the embodiment of the present invention includes the following steps: generating, by the CSI terminal, an identifier corresponding to the first session when processing the first session, and sending a message in the first session, and subsequently initiating the first session
  • the message of the associated second session carries the identifier.
  • the CSI interworking function entity After receiving the message sent by the CSI terminal, the CSI interworking function entity identifies the identifier carried in the message and matches the locally saved identifier. If the matching fails, the C300 determines whether the matching is successful.
  • the CSI terminal of the embodiment of the present invention includes: an identifier generating unit, configured to generate an identifier corresponding to the first session when the CSI terminal processes the first session; and a transmitting unit, configured to send a message in the first session And carrying the identifier generated by the identifier generating unit in the subsequently initiated message of the second session associated with the first session, to deliver the identifier to the network side.
  • the CSI interworking function entity of the embodiment of the present invention includes: an identifying unit, configured to identify an identifier carried in a message sent by the CSI terminal, and a matching unit, configured to match the identifier identified by the identifying unit with the identifier saved by the identifier holding unit If the matching fails, determining that the received message belongs to the first session, and issuing a related indication to the identifier holding unit; if the matching is successful, determining that the received message belongs to the second session associated with the first session, and The association unit sends a relevant indication; the identifier holding unit is configured to save the identifier identified by the identification unit according to the indication of the matching unit, and record the correspondence between the identifier and the first session; and the association unit is configured to: according to the indication of the matching unit, The first session is associated with a second session.
  • the system for associating a session in the embodiment of the present invention includes: a CSI terminal, configured to generate an identifier corresponding to the first session when processing the first session, and send a message in the first session, and subsequently initiate the The message of the second session associated with the first session carries the identifier; the CSI interworking function entity is configured to: after receiving the message sent by the CSI terminal, identify the identifier carried in the message, and match the locally saved identifier. If the matching fails, determining that the received message belongs to the first session, saving the identifier carried in the message, and recording the correspondence between the identifier and the first session; If the match is successful, it is determined that the received message belongs to the second session, and the first session is associated with the second session.
  • the method for transmitting the associated session information in the embodiment of the present invention is applied to the session association between the CSI terminal and the IMS terminal, and includes the following steps: the CSI terminal or the CSI interworking function entity carries the associated session information in the message exchanged with the peer end; After receiving the message, the terminal identifies and saves the associated session information from the message.
  • the CSI terminal In the method for associating a session in the embodiment of the present invention, the CSI terminal generates an identifier corresponding to the first session when the first session is processed, and sends a message in the first session, and a subsequent association with the first session.
  • the message of the second session carries the identifier.
  • the CSI interworking function entity After receiving the message sent by the CSI terminal, the CSI interworking function entity identifies the identifier carried in the message and matches the locally saved identifier. If the matching fails, the received information is determined.
  • the message belongs to the first session, saves the identifier carried in the message, and records the correspondence between the identifier and the first session; if the matching is successful, it determines that the received message belongs to the second session, and The first session is associated with a second session.
  • the CSI terminal is interworking with the IMS terminal.
  • Embodiments of the present invention also provide apparatus and systems accordingly.
  • the method for transmitting the associated session information in the embodiment of the present invention provides a specific delivery manner of the associated session information (identification), that is, the UUI of the CS message that is exchanged between the CSI terminal and the CSI interworking function entity in the CS session (User to The user information carries the associated session information.
  • the associated session information is carried in the header field of the IMS message exchanged between the CSI terminal and the CSI interworking function entity.
  • FIG. 1 is a schematic structural diagram of interworking control in a calling network in a case where a CSI terminal is used as a calling party and an IMS terminal is called as a called party;
  • FIG. 2 is a schematic structural diagram of interworking control in a called network in the case where a CSI terminal is used as a calling party and an IMS terminal is called as a called party in the prior art;
  • 3 is a flow chart of adding a voice call to an existing IMS session by using a CSI terminal as a calling party in the prior art
  • 4 is a flow chart of steps of a method for associating a session according to an embodiment of the present invention
  • FIG. 5 is a signaling flowchart of Embodiment 1 of a method for associating a session according to the present invention
  • Embodiment 6 is a signaling flowchart of Embodiment 2 of a method for associating a session according to the present invention
  • Embodiment 7 is a signaling flowchart of Embodiment 3 of a method for associating a session according to the present invention.
  • FIG. 8 is a schematic structural diagram of a CSI terminal according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a CSI interworking function entity according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a system for associating a session according to an embodiment of the present invention. detailed description
  • the CSI terminal In order to associate the first session with the second session that needs to be associated, the CSI terminal communicates with the IMS terminal.
  • An embodiment of the present invention provides a method for associating a session, as shown in FIG. 4, including the following main steps:
  • the Sl and the CSI terminal generate an identifier corresponding to the first session when processing the first session.
  • the related information may be obtained.
  • the CSI terminal obtains the CS domain MSISDN (Mobile Station International ISDN Number) of the peer from the existing field or the extended field of the first session related message.
  • the mobile station international ISDN number or the other way (for example, through the locally stored data) to obtain the peer domain's CS domain MSISDN number; for example: the CSI terminal obtains the PMI (Personal Mobile Information) information from the local end. Or directly use the random number as the identifier.
  • PMI Personal Mobile Information
  • the timing at which the CSI terminal generates an identifier uniquely corresponding to the first session including but not limited to: when the CSI terminal initiates the first session; or after the first session is started, before the second session is initiated.
  • the manner in which the CSI terminal generates the identifier includes one of the following:
  • the CSI terminal obtains the CS domain MSISDN number of the peer end, and uses the MSISDN number as the identifier.
  • the CSI terminal uses the local PMI information as the identifier.
  • the CSI terminal uses the random number uniquely corresponding to the first session as the identifier.
  • the CSI terminal acquires the CS domain MSISDN number of the opposite end, and combines the MSISDN number with the random number as the identifier. For example, if the peer domain's CS domain MSISDN number is 13901391234, the identifier is 13901391234006.
  • the CSI terminal combines the PMI information of the local end with the random number as the identifier. For example, if the PMI value of the CSI terminal is 0007, the identifier is 0007003.
  • the CSI terminal carries the identifier in an associated session message sent to the network side.
  • the CSI terminal In order to implement the interworking between the CSI terminal and the IMS terminal, the CSI terminal needs to carry the identifier in the message sent when the first session is processed, and in the message of the second session associated with the first session.
  • the CSI terminal transmits the identifier to the network side in one of the following ways:
  • the identifier is carried in the UUI information of the CS message sent to the network side.
  • the identifier is carried in an existing header field or a newly added header field of an IMS message sent to the network side.
  • the IMS message is an IMS request message, and the identifier is carried in the user agent header field or carried in the P-Asserted-Identity header field; if the IMS message is an IMS response message, the identifier is carried in In the Server header field; or in the P-Asserted-Identity header field.
  • the S3 and the CSI interworking function entity identify the identifier carried in the received message.
  • the CSI interworking function entity After receiving the message, the CSI interworking function entity identifies the identifier carried in the message according to the type of the message and the location of the identifier carried in step S2.
  • the CSI interworking function entity matches the identified identifier with the locally saved identifier. If the matching fails, the process proceeds to step S5. If the matching is successful, the process proceeds to step S6.
  • the first session is associated with the second session.
  • Method Embodiment 1 The CS between the CSI terminal and the IMS terminal is established first, and the session association process established after the IMS. Referring to Figure 5, the following specific steps are included:
  • the calling party sends a session request INVITE message to the S-CSCF of the CSI terminal belonging to the IMS domain.
  • the S-CSCF routes the session request to the CSI IW (CSI Interworking, CSI Interworking Function Entity).
  • CSI IW CSI Interworking, CSI Interworking Function Entity
  • CSI IW performs business logic processing.
  • the CSI IW initiates a session request to the Tel URI of the CSI terminal to the MGCF (Media Gateway Control Function).
  • MGCF Media Gateway Control Function
  • the MGCF initiates a CS call request message to the CS domain of the CSI terminal. After receiving the request message, the CSI terminal identifies the CS MSISDN number of the peer end as the session identifier of the session from the signaling of the CS domain.
  • the CSI terminal sends a CS call response message to the MGCF.
  • the MGCF sends a 200 OK response message to the CSI IW.
  • CSI IW sends 200 0 to 8- ⁇ 8 ⁇ ? .
  • the S-CSCF forwards 200 OK to the calling side.
  • the CSI terminal initiates a session request to the IMS of the opposite UE.
  • the request carries the MSISDN number information of the peer as the identifier of the original session combined with the IMS session.
  • the CSI terminal carries this information in the User Agent header field of SIP signaling.
  • the CSI terminal can also carry this information in other SIP header fields/messages.
  • the session is matched according to the received MSISDN number information, and the matching is successful.
  • the CSI IW merges the session request with the previous session, and initiates a session change request RE-INVITE message to the peer.
  • the S-CSCF forwards the RE-INVITE message to the peer terminal.
  • the IMS terminal is called, CSI is terminated.
  • the MSISDN number of the peer end can still be identified as the session identifier, and the session identifier is carried when the second session is initiated.
  • Method Embodiment 2 The process of session association when an IMS session is first established between a CSI terminal and an IMS terminal. See Figure 6 for the following specific steps:
  • the calling party sends a session request INVITE message to the S-CSCF of the CSI terminal belonging to the IMS domain.
  • the S-CSCF routes the session request to the CSI IW.
  • CSI IW performs business logic processing.
  • the CSI IW initiates a session request to the IMS domain of the CSI terminal.
  • the CSI terminal can use the CS number as the session identifier.
  • the information can be obtained from other non-sessional channels. For example, this information can be obtained from locally stored data.
  • the CSI terminal sends a 200 OK response message.
  • the message carries the CS number information of the peer end, indicating that a subsequent CS call is to be bound to the IMS session.
  • the CSI terminal sends 200 OK to the peer terminal.
  • the S-CSCF receives the 200 OK response and forwards it to the peer terminal.
  • the CSI terminal initiates a CS session request to the peer end, and the called number is the CS domain MSISDN number of the peer end.
  • the request is routed to the MGCF.
  • the CSI terminal may also carry the called number information of the opposite end as the session identifier in the UUI information of the CS signaling, and identify the original session combined with the call.
  • the MGCF sends a SIP INVITE message to the CSI IW, where the SIP message carries the Tel URI information of the CS number of the opposite end.
  • the CSI IW obtains the MSISDN number according to the peer TelURI information in the SIP message, and performs matching.
  • the CSI IW merges the session with the original session and sends a RE-INVITE to the peer terminal.
  • the S-CSCF receives the RE-INVITE response and forwards it to the peer terminal.
  • Method Embodiment 3 The CSI terminal CS calls, and the IMS calling party establishes a session with the peer end. Referring to Figure 7, the following specific steps are included:
  • the CSI terminal initiates an INVITE session request to the peer, and the request is routed to the CSI IW.
  • the CSI terminal initiates the request, it carries the session identification information and carries it to the network side in the SIP message.
  • the CSI terminal can carry the session identifier in the User Agent header field of the SIP message.
  • the CSI IW initiates an INVITE request to the peer.
  • the CSI terminal initiates a CS call request to the peer, and the request is routed to the MGCF.
  • the CSI terminal carries the session identification information in the message.
  • the CSI terminal can directly use the called number in the CS signaling as an implicit session identifier, and can also carry explicit session identification information in the UUI information.
  • the MGCF initiates an INVITE request, where the request carries implicit or explicit session identification information mapped in the CS message.
  • the request is routed to the CSI IW.
  • the CSI IW matches according to the session identifier carried in the session.
  • the CSI IW merges the second session with the previous session and sends a RE-INVITE request to the peer.
  • the embodiment of the present invention further provides a CSI terminal, which is shown in FIG. 8, which includes an identifier generating unit and a transmitting unit connected to each other; and further includes an information acquiring unit connected to the identifier generating unit.
  • the identifier generating unit is configured to generate an identifier corresponding to the first session when the CSI terminal processes the first session.
  • the transmitting unit configured to carry the identifier generated by the identifier generating unit in the message sent when the first session is processed, and the message of the second session associated with the first session, to transmit the identifier to the network side.
  • the information obtaining unit is configured to obtain the CS domain MSISDN number of the peer end from the first session related message, or obtain the CS domain MSISDN number of the opposite end by using other methods, such as locally stored data, and provide the identifier to the identifier generating unit. It can also be used to obtain the PMI letter of this CSI terminal. Interest.
  • the embodiment of the present invention further provides a CSI interworking function entity, as shown in FIG. 9, which includes an identification unit and a matching unit connected to each other, an identifier holding unit respectively connected to the identification unit and the matching unit, and The associated unit to which the matching unit is connected.
  • a CSI interworking function entity as shown in FIG. 9, which includes an identification unit and a matching unit connected to each other, an identifier holding unit respectively connected to the identification unit and the matching unit, and The associated unit to which the matching unit is connected.
  • the identifying unit is configured to identify an identifier carried in a message sent by the CSI terminal.
  • the matching unit is configured to match the identifier identified by the identification unit with the identifier saved by the identifier holding unit, and if the matching fails, determine that the received message belongs to the first session, and issue a related indication to the identifier holding unit; If the matching is successful, it is determined that the received message belongs to the second session associated with the first session, and the relevant indication is sent to the associated unit.
  • the identifier holding unit is configured to save the identifier identified by the identification unit according to the indication of the matching unit, and record the correspondence between the identifier and the first session.
  • the association unit is configured to associate the first session with the second session according to an indication of the matching unit.
  • the embodiment of the present invention further provides a system for associating a session, as shown in FIG. 10, including a CSI terminal and a CSI interworking function entity that are connected to each other.
  • the CSI terminal is configured to generate an identifier corresponding to the first session when processing the first session, and send a message when processing the first session, and a message of the second session associated with the first session that is subsequently initiated. Carry the logo in it.
  • the CSI interworking function entity is configured to: after receiving the message sent by the CSI terminal, identify the identifier carried in the message, and match the locally saved identifier, if the matching fails, determine that the received message belongs to The first session, the identifier carried in the message is saved, and the correspondence between the identifier and the first session is recorded; if the matching is successful, it is determined that the received message belongs to the second session, and the first session is A session is associated with a second session.
  • an embodiment of the present invention provides a method for transmitting associated session information, including the following steps:
  • the CSI terminal or the CSI interworking function entity carries the associated session information in the message interacting with the peer end; and after the peer end receives the message, the associated session information is identified and saved from the message.
  • the associated session includes: a first session and a second session, where the first session is a CS session, and the second session is an IMS session; or the first session is an IMS session, and the second session is a CS session;
  • the CSI terminal or the CSI interworking function entity carries the associated session information in the UUI information of the CS message that interacts with the peer end; and after receiving the CS message, the peer end is in the UUI information of the message. Identify and save the associated session information.
  • the CSI terminal or the CSI interworking function entity carries the associated session information in the existing header field or the newly added header field of the IMS message that interacts with the peer end; and after the peer end receives the IMS message, The associated session information is identified and saved from the header field of the IMS message.
  • the IMS message is an IMS request message, and the associated session information is carried in the user agent header field or carried in the P-Asserted-Identity header field; the IMS message is an IMS response message, and the association is The session information is carried in the server header field; or carried in the P-Asserted-Identity header field.
  • the CSI terminal in the method, device, and system for associating a session in the embodiment of the present invention, the CSI terminal generates an identifier corresponding to the first session when processing the first session, and sends a message in the first session, and subsequent
  • the message sent by the second session that is associated with the first session carries the identifier.
  • the CSI interworking function entity After receiving the message sent by the CSI terminal, the CSI interworking function entity identifies the identifier carried in the message and matches the locally saved identifier.
  • the matching fails, determining that the received message belongs to the first session, saving the identifier carried in the message, and recording the correspondence between the identifier and the first session; if the matching is successful, determining that the received message belongs to In the second session, and associating the first session with a second session.
  • the CSI terminal and the IMS terminal are interworked.
  • the method for transmitting the associated session information in the embodiment of the present invention provides a specific delivery manner of the associated session information (identification), that is, the UUI of the CS message that is exchanged between the CSI terminal and the CSI interworking function entity in the CS session (User to The user information carries the associated session information.
  • the associated session information is carried in the header field of the IMS message exchanged between the CSI terminal and the CSI interworking function entity.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un équipement et un système pour mettre en rapport une session, utilisés pour résoudre le problème où la première session et la seconde session qui doivent être requises pour être mises en rapport ne pouvaient pas l'être dans l'art antérieur. Le procédé comprend les étapes suivantes : quand le terminal CSI traite la première session, il génère un identifiant correspondant à la première session et l'identifiant est transporté dans le message envoyé quand la première session est traitée et dans le message de la seconde session créée plus tard se rapportant à la première session ; après avoir reçu le message, l'entité de fonction d'intercommunication CSI identifie l'identifiant transporté dans le message et le met en correspondance avec l'identifiant local stocké, si la correspondance échoue, il est déterminé que le message reçu appartient à la première session, ensuite l'identifiant transporté dans le message est stocké et la relation correspondance entre l'identifiant et la première session est enregistrée ; si la correspondance est réussie, il est déterminé que le message reçu appartient à la seconde session, ensuite la première session et la seconde session sont mises en rapport. L'invention concerne également un procédé pour transférer l'information de session en rapport.
PCT/CN2007/003546 2006-12-29 2007-12-11 Procédé, équipement et système pour mettre en rapport une session WO2008080297A1 (fr)

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CN104539586A (zh) * 2014-12-08 2015-04-22 中兴通讯股份有限公司 会话管理方法和装置
CN114866596B (zh) * 2022-05-25 2024-06-07 上海浦东发展银行股份有限公司 会话处理方法、装置、服务器及存储介质

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