WO2008011790A1 - Procédé, système et appareil de réseau permettant d'établir une session - Google Patents

Procédé, système et appareil de réseau permettant d'établir une session Download PDF

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Publication number
WO2008011790A1
WO2008011790A1 PCT/CN2007/001877 CN2007001877W WO2008011790A1 WO 2008011790 A1 WO2008011790 A1 WO 2008011790A1 CN 2007001877 W CN2007001877 W CN 2007001877W WO 2008011790 A1 WO2008011790 A1 WO 2008011790A1
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WO
WIPO (PCT)
Prior art keywords
session
intermediate node
message
network
sdp
Prior art date
Application number
PCT/CN2007/001877
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English (en)
Chinese (zh)
Inventor
Hua Cheng
Hao Lai
Youzhu Shi
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008011790A1 publication Critical patent/WO2008011790A1/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
    • H04L65/1069—Session establishment or de-establishment
    • 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
    • H04L65/1083—In-session procedures
    • H04L65/1093—In-session procedures by adding participants; by removing participants
    • 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
    • H04L65/40—Support for services or applications
    • H04L65/403—Arrangements for multi-party communication, e.g. for conferences
    • H04L65/4053—Arrangements for multi-party communication, e.g. for conferences without floor control

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a method, system and network device for establishing a tongue.
  • SIP Session Initiated Protocol
  • SIP Session Initiated Protocol
  • Applications include voice, video, games, messaging, call control, and online services.
  • SIP establishes a dialogue before establishing a session.
  • the conversation is a kind of connection relationship that lasts for a certain period of time.
  • the conversation message delivery path is determined. Once the conversation is established, subsequent SIP messages must be delivered in accordance with the message path of the conversation.
  • the SDP Session Description Protocol
  • the SDP response information is given in the SDP providing information.
  • the session path is composed of address information of one or more session contact nodes, and the session contact node other than the session contact node where the session participant is located is the session intermediate node.
  • a session channel is established between adjacent session contact nodes in the session path, and the session contact node where the session participant is located transmits the data transmitted in the session in the session channel.
  • Information the data information passed in the session reaches the session contact node where the other participants of the session are located through the tongue channel established between the session contact nodes.
  • the data information transmitted in the session is a data packet transmitted through the Transmission Control Protocol (TCP) or the Real Time Transfer Protocol (RTP) protocol.
  • TCP Transmission Control Protocol
  • RTP Real Time Transfer Protocol
  • the establishment process of the session channel may be a process of establishing a TCP, or The process of establishing RTP. If a new protocol emerges in the future for passing data information in the session, the establishment process of the session channel is defined by the new protocol. Cheng.
  • the server may only retain the address information of the first contact node in the session path before sending SDP information due to security reasons such as topology hiding. Or, only the address information of the first session contact node in the session path is reserved before the SDP response message is sent.
  • B2BUA Back-to-Back User Agent
  • Sessions can be divided into audio sessions, video sessions, data sessions, message sessions, and more.
  • a message session is used to pass a series of associated instant messages between the parties, and other video sessions, audio sessions, and data sessions are collectively referred to as non-message sessions.
  • MSRP Message Session Relay Protocol
  • the message session participant carries the SDP information in the SIP message, and the SDP provides the session path information carrying the MSRP.
  • TCP Transmission Control Protocol
  • the session contact node uses the SEND command on the TCP connection to deliver instant messages.
  • the session intermediate node in the MSRP session path receives and forwards the instant message delivered in the TCP connection as the relay node of the MSRP.
  • the data information passed in the MSRP session is the MSRP packet passed through the TCP protocol.
  • IMS Internet Multiedia Subsystem, IP Multimedia Subsystem
  • IP Multimedia Subsystem IP Multimedia Subsystem
  • CSCF Call Session Control Function
  • Application Server AS Application Server
  • HSS home subscriber server
  • MGCF Media Gateway Control Function
  • the session participant passes the current location proxy node P-CSCF ( The proxy CSCF) accesses the MS, and the session and service trigger control and the service control interaction with the AS are completed by the home domain service node call control unit of its registered place.
  • the S-CSCF Service CSCF
  • the sending rule sends a call request message carrying the SDP providing information of the message session to the message session intermediate node, and the message session intermediate node adds its own address information to the message session path, and is received by the message session intermediate node after the message session negotiation is successful. And forwarding the data message passed in the message session.
  • the message path is determined during the processing of the call request message.
  • the S-CSCF entity Since the SDP providing information carried in the call request message does not include the description information of the message session during the non-message session, the S-CSCF entity does not forward the message to the message session intermediate node, and the message session intermediate node does not join the message session. In the message path.
  • the message session intermediate node cannot be obtained because the message session intermediate node is not in the message path, and finally the message session intermediate node cannot receive and forward the data information transmitted in the message session. It can be seen that this method of establishing a message session cannot be applied to the case of adding a message session during a non-message session.
  • the inventors have found that the existing method of adding a message session in a non-message process has at least the following disadvantages: the network cannot associate a new message session request with the original session, and the network will be new.
  • the message session requests redistribution of routes, reallocation of session resources, re-accounting, and when the network determines the state of the terminal, the new message session request is rejected if the original session is not released, resulting in the inability to establish a message session.
  • the foregoing method cannot respond to the call request message carrying the SDP providing information.
  • the message is triggered to the message session intermediate node, and the message session intermediate node cannot add its own address information to the message session path.
  • the session establishment process defined by 3GPP stipulates that the message path of the session in which the session is located cannot be modified after the session is established, after the non-message session is established, if the message session intermediate node is not in the non-message session In the message path of the conversation where the message session is located, the network cannot insert the message intermediate node into the non-message.
  • the intermediate nodes cannot be added to the session path. For example: After the session is established, it needs to be monitored. In this case, the device for monitoring needs to be added as a session intermediate node to the subsequent session. The session is established to obtain the listener data. At this time, if the device for monitoring is not in the message path of the session where the ⁇ is located, the network cannot insert the listening device as the session intermediate node into the session path, so that the network monitoring fails.
  • the embodiment of the invention provides a method, a system and a network device for establishing a session, so as to insert a session intermediate node into a session path to meet the usage requirement of the session.
  • Embodiment 4 of the present invention provides the following technical solutions:
  • a method of establishing a session comprising:
  • the session participant sends a session initiation protocol SIP message carrying the session description protocol SDP providing information to the network in the first session;
  • the network After receiving the SIP message, the network adds the session intermediate node to the session path;
  • the session intermediate node receives and forwards data information passed in the session.
  • a method of establishing a session comprising:
  • the session participation direction sends a session initiation protocol that carries the session description protocol SDP to provide information.
  • the network After receiving the SEP message, the network joins the session intermediate node to the session path by the proxy call session control function entity and/or the service call session control function entity;
  • the tongue intermediate node forwards the data packets delivered in the session.
  • a system for establishing a tongue comprising: a message dialogue entity and a session intermediate node,
  • the message conversation entity is configured to receive a session initiation protocol SIP message that is sent by the session participant in the first session and that carries the session description protocol SDP providing information, and adds the session intermediate node to the session path, and includes:
  • a message receiving unit configured to receive a SIP message that is sent by the session participant in the first session and that carries the session description protocol SDP providing information
  • a system for establishing a session comprising: a message conversation entity and a session intermediate node,
  • the message dialogue entity is configured to receive a session initiation protocol SIP message that carries the session description protocol SDP providing information sent by the session participant in the first session, and send the SDP providing information or the SDP response message to the session intermediate node.
  • SIP message ;
  • the session intermediate node is configured to add itself to the session path, and receive, and/or forward data information delivered in the session, including:
  • a receiving unit configured to receive a SIP message sent by the message conversation entity and data information delivered in the session
  • An address adding unit configured to add address information of the session intermediate node to the session path
  • a forwarding unit configured to forward the data information delivered in the tongue.
  • a network device is configured to add address information of a session intermediate node in which a message is active to a session path, including:
  • a message receiving unit configured to receive a session initiation protocol SIP message that is sent by the session participant in the first session and that carries the session description protocol SDP providing information;
  • the session intermediate node adds a unit for adding the session intermediate node to the tongue path.
  • the session participant sends a session request message to the network when the session participant requests to establish a session, and after receiving the session request message, the network adds the session intermediate node to the session.
  • the session intermediate node terminates and forwards the data information delivered in the session, thereby satisfying various application requirements of the session.
  • not only the function of adding the session intermediate node to the session path but also the proxy call control function entity or the service call session control function entity in the network may be completed by the application server. Therefore, operators can flexibly deploy networks and provide better session services.
  • FIG. 1 is a flow chart showing an implementation of a first embodiment of the method of the present invention
  • FIG. 3 is a flowchart of an implementation of a third embodiment of the method of the present invention.
  • FIG. 4 is a schematic structural diagram of a system of an existing IMS
  • Figure 5 is a flow chart showing an implementation of the fourth embodiment of the method of the present invention.
  • Figure 6 is a flowchart showing an implementation of a fifth embodiment of the method of the present invention.
  • 7 is a schematic block diagram of a first embodiment of a system for establishing a session according to the present invention.
  • FIG. 8 is a schematic block diagram of a second embodiment of a system for establishing a session according to the present invention.
  • a method for establishing a session in the embodiment of the present invention is that the session participant sends a SEP message carrying the SDP providing information to the network in the first session, and after receiving the SIP message, the network adds the session intermediate node to the session path. Data information passed in the session is received and forwarded by the session intermediate node.
  • the network obtains the address information of the session intermediate node, and adds the session intermediate node to the session path; or the network sends a SIP message carrying the SDP providing information or the SDP response information to the session intermediate node, and the session intermediate node sets itself Join the path to the tongue.
  • the first conversation represents an established conversation, that is, the session established by the embodiment does not require a new conversation to be established, but rather a new session is established in the established conversation.
  • Another method for establishing a session in the embodiment of the present invention is that the session participates in the direction sending and carrying of the network.
  • the SDP provides a SIP message for the information, and the SIP message is used to establish a second session.
  • the network adds the session intermediate node to the session path by the P-CSCF entity and/or the S-CSCF entity.
  • the data information passed in the session is received and forwarded by the intermediate node.
  • the second dialog represents a conversation that has not yet been established, that is, the session established by the embodiment needs to establish a new conversation in which a new session is established.
  • FIG. 1 there is shown an implementation flow of a first embodiment of the method of the present invention.
  • a method is described in which a participant sends a SIP message carrying SDP providing information to a network in a first session, and the network obtains address information of a session intermediate node, and adds a tongue intermediate node to the session path.
  • Example. The process includes the following steps: A non-message session is established between session participant A and session participant B.
  • Session participant A sends an increase message session request message to network A, which is carried in the message.
  • the SDP provides the following information:
  • the network A obtains the address information of the session intermediate node A through the data configuration.
  • the network A adds the address information of the session intermediate node A to the SDP providing information, and sends the modified message to the network B.
  • the modified message is as follows:
  • INVITE sip participant— B@homeB.net SIP/2.0
  • the network B obtains the address information of the session intermediate node B through the data configuration, and the network B adds the address information of the session intermediate node B to the SDP providing information, and sends the modified message to the session participant B, the modified message.
  • INVITE sip participant— B@homeB.net SIP/2.0
  • the session participant B sends a success response message to the network B, and the message carries the SDP response message as follows:
  • Network B sends an ACK (Acknowledgement) response message to Session Participant B.
  • the session participant B establishes a TCP connection to the session intermediate node B; or the network B transmits the address information of the session participant B to the session intermediate node B through a message, and the session intermediate node B establishes a TCP connection to the session participant B.
  • Network B sends a success response message to network A.
  • the response message adds the address information of session intermediate node B to the SDP response message, as follows:
  • Network A sends an ACK message to Network B.
  • Network A transmits the address information of the session intermediate node B to the session intermediate node A through a message, and the session intermediate node A establishes a TCP connection to the session intermediate node B; or the network B transmits the address information of the session intermediate node A to the message through the message.
  • the tongue intermediate node B, the session intermediate node B establishes a TCP connection to the session intermediate node A.
  • the network A sends a success response message to the session participant A, and the address information of the session intermediate node A is added to the SDP response message in the success response message, as follows:
  • the session participant A After the session participant A receives the success response message, it sends an ACK message to Network A.
  • the session participant A and the session intermediate node A establish a TCP connection; or the network A transmits the address information of the session participant A to the session intermediate node A through a message, and the session intermediate node A establishes a TCP connection to the session participant A.
  • Session participant A sends the data information passed in the message session to session intermediate node A.
  • Session intermediate node A sends the data information passed in message ⁇ to session intermediate node B.
  • Session intermediate node B sends the data information passed in the message session to session participant B.
  • Session participant B feedback success response message.
  • the message interaction between the network A and the session intermediate node A or the network B and the session intermediate node B in step 2 and step 3 may adopt the SIP protocol, the H.248 protocol, the HTTP (Hypertext Transfer Protocol) protocol, The traditional circuit domain protocol and the Diameter protocol obtain the address information of the session intermediate node through the interaction.
  • SIP Session Initiation Protocol
  • H.248 Hypertext Transfer Protocol
  • HTTP Hypertext Transfer Protocol
  • the traditional circuit domain protocol and the Diameter protocol obtain the address information of the session intermediate node through the interaction.
  • the message interaction between the network 6, A, and 12 in the network and between the session intermediate node A or the network B and the session intermediate node B may adopt the SIP protocol, the H.248 protocol, the HTTP protocol, the traditional circuit domain protocol, and the Diameter protocol.
  • the session intermediate node obtains address information of other nodes through the interaction.
  • the embodiment only needs to adjust the time when the network adds the address information of the session intermediate node to the session path: When receiving the confirmation message of the session request response message and the session request response message, the address information of the session intermediate node is added to the session path.
  • the participant sends a SIP message carrying the SDP providing information to the network in the first session
  • the network sends the SIP message carrying the SDP providing information or the SDP response information to the session intermediate node, where
  • the session participant A sends an add message session request message to the network A, and the message carries the SDP information.
  • the network A sends a session request message to the session intermediate node A.
  • the destination address information in the message is the address information of the session intermediate node A, for example: Request-uri is application_A@homeA.net, and the message carries the session participant A.
  • the SDP provides information.
  • the session intermediate node A forwards the session request message to the network A, and the message carries the modified SDP providing information of the session intermediate node A.
  • Session intermediate node A adds its own address information to the SDP provisioning information, and sends the modified message to Network B.
  • the network B sends a session request message to the session intermediate node B.
  • the destination address information in the message is the address information of the session intermediate node B.
  • the request-uri is application_B@homeB.net, and the message carries the information provided by the SDP.
  • the session intermediate node B sends a session request message to the network B, and the message carries the modified SDP providing information of the session intermediate node B.
  • Network B adds the address information of the session intermediate node B to the SDP providing information, and sends the modified message to the session participant B.
  • the session participant B sends a success response message to the network B, and the message carries the SDP response message.
  • the network B sends a success response message to the session intermediate node B, where the message carries the SDP response information of the session participant B.
  • the session intermediate node B sends a confirmation message of the success response message to the network B.
  • Network B sends an ACK response message to session participant B.
  • Session participant B establishes a TCP connection to session intermediate node B; or session intermediate node B establishes a TCP connection to session participant B.
  • the session intermediate node B sends a success response message to the network B, and the session intermediate node The address information of B is added to the SDP response message.
  • the network B sends a success response message to the network A, and the address information of the session intermediate node B is added to the SDP response message in the response message.
  • Network A forwards the success response message to session intermediate node A.
  • Session intermediate node A sends a response message to network A.
  • Network A sends an ACK message to Network B.
  • Network B sends a response message to session intermediate node B.
  • Network A transmits the address information of the session intermediate node B to the session intermediate node A through a message, and the session intermediate node A establishes a TCP connection to the session intermediate node B; or the session intermediate node B establishes a TCP connection to the session intermediate node A.
  • the network A sends a success response message to the session participant A, and the address information of the session intermediate node A is added to the SDP response message in the success response message.
  • the session participant A After the session participant A receives the success response message, it sends an ACK message to Network A.
  • Session participant A and session intermediate node A establish a TCP connection; or session intermediate node A establishes a TCP connection to session participant A.
  • Session participant A sends the data information passed in the message session to session intermediate node A.
  • the tongue intermediate node A sends the data information passed in the message session to the session intermediate node B.
  • Session intermediate node B sends the data information passed in the message session to session participant B. 16 - 18. Session participant B feedback success response message.
  • the embodiment only needs to adjust the time when the network adds the address information of the session intermediate node to the session path:
  • the message is sent to the session intermediate node, and the session intermediate node adds itself to the session path;
  • the network receives the confirmation message of the session request response message, the network sends a tongue request response to the intermediate node of the tongue.
  • the session intermediate node adds itself to the session path.
  • FIG. 3 there is shown an implementation flow of a third embodiment of the method of the present invention.
  • the participant sends a SIP message carrying the SDP providing information to the network in the first session
  • the network sends the SIP message carrying the SDP providing information or the SDP response information to the intermediate node of the tongue.
  • the process includes the following steps:
  • Network A sends a session request message, and network A uses the address information of the entity in network B in the message path of the non-message session, or the address information that network B can recognize as the destination address of the message session request message, in the session.
  • the request message carries the information of the original message path by using the path of the session request message, and the session request message carries the media information of the session participant A, where the message includes the message negotiation information, and the network A according to the trigger rule
  • the session request message is sent to the session intermediate node A.
  • the SDP providing information carried in the session request message is as follows: Step 1 in Embodiment 101, and other information carried in the session request message is as follows:
  • INVITE sip application— B@homeB.net SIP/2.0
  • the session intermediate node A adds its own address information to the SDP providing information, and the session intermediate node A forwards the modified session request message to the network A, where the request message carries the modified SDP providing information of the session intermediate node A.
  • Network A sends a ⁇ request message to network B, which forwards the session request message to session intermediate node B according to the triggering rule.
  • the session intermediate node B adds its own address information to the SDP providing information, and the session intermediate node B forwards the modified session request message to the network B, where the session request message carries the modified SDP providing information of the intermediate node B. , step 3 in the embodiment shown in FIG.
  • the network B sends the release conversation message to the network A in the original conversation according to the information of the original message path that is replaced by the path of the session request message carried in the session request message, and replaces the original conversation with the session created by the session request message.
  • the conversation in the message path
  • Step 3 in the same embodiment as shown in FIG. 9 ⁇ 13.
  • the session participant B sends a success response message to the network B, and the network B forwards the success response message to the session intermediate node B, and the session intermediate node B adds itself to the SDP response message carried in the success response message.
  • the session intermediate node B and the session participant B establish a TCP connection, and the message session negotiation result information carried in the success response message is as shown in step 4 in the embodiment shown in FIG.
  • the session intermediate node B sends a success response message to the session intermediate node A, and the intermediate node A and the session intermediate node B establish a TCP connection, and the message session negotiation result information carried in the success response message is as shown in FIG. Step 7 in the embodiment.
  • the session intermediate node A sends a success response message to the network A, and the network A forwards the success response message to the tongue participant A, and the session intermediate node A adds itself to the SDP response message carried in the success response message.
  • the session intermediate node A and the session participant A establish a TCP connection, and the SDP response information carried in the success response message is as shown in step 10 in the embodiment shown in FIG.
  • the operation of adding the session intermediate node address information to the message path may be performed by the proxy call session control function entity, or the serving call session control function entity, or the application server.
  • Figure 4 shows the system architecture of the IMS in the prior art:
  • the CSCF entity is used to control functions such as user registration and session control, and includes: an S-CSCF entity 41 and a P-CSCF entity 42; an AS (Application Server) 43 is used to provide various service inverse control functions; (Home Subscriber Server, Home Subscriber Server) 44 is used to centrally manage user subscription data; MGCF (Media Gateway Control Function) entity 45 is used to implement interworking with the circuit switched network; the user accesses through the proxy node P-CSCF The IMS; session and service trigger control and the service control interaction with the AS are completed by the home domain service node S-CSCF of its place of registration.
  • AS Application Server
  • MGCF Media Gateway Control Function
  • the session intermediate node can be on the P-CSCF entity, on the S-CSCF entity, or on the AS or other functional entities in the system.
  • the session participant is sent a SIP message carrying the SDP providing information to the network in the first session, and the network sends the SIP message carrying the SDP providing information or the SDP response information to the session intermediate node.
  • the session participant A sends a non-message session request message to the network, and the network A forwards the non-message session request message to the AS-A as the intermediate node of the message session, and the AS-A sends the non-message session request message.
  • the network B forwards the non-message session request message to the AS-B as the intermediate node of the message session, and the AS-B forwards the non-message session request message to the session participant B, the participant B to the participant A
  • the success response message is fed back, and the message path of the first session is established, and both AS-A and AS-B, which are intermediate nodes of the message session, are in the message path of the first session.
  • the session participant A sends a message session request message to the network A in the first session, and carries the message information in the message, and the network A forwards the message session request message to the AS-A.
  • the AS-A serving as the session session intermediate node for the session participant A adds its own message session address information to the SDP providing information carried in the message session request message, and sends the modified session request message to the network B.
  • the message carries the modified SDP providing information.
  • the AS-B serving as the session participant intermediate node for the session participant B adds its own message session address information to the SDP providing information carried in the message session request message, and sends the modified message session request message.
  • the session participant B feeds back the success response message, and the AS-B adds its own message session address information to the SDP response message carried in the success response message, and sends the modified success response message to the AS-A.
  • AS-B establishes a TCP connection with Participant B.
  • AS-A adds its own message session address information to the SDP response message carried in the success response message, and sends the modified success response message to session participants A, AS-A and AS-B. Establish a TCP connection.
  • Session Participant A establishes a TCP connection with AS-A.
  • AS-A and AS-B terminate and forward the message information sent by session participant A and session participant B in the message session.
  • the AS in the embodiment may also be a P-CSCF, or an S-CSCF. If the SDP providing information is carried in the session request response message, and the acknowledgment message of the session request response message carries the SDP response information, the embodiment only needs to adjust the time when the network adds the address information of the session intermediate node to the session path: The session intermediate node is added to the session path when receiving the session request response message; the network adds the session intermediate node to the session path when receiving the confirmation message of the session request response message.
  • Figure 6 shows an implementation flow of a fifth embodiment of the method of the present invention.
  • the session participation direction network sends a SIP message carrying the SDP providing information, and the SIP message establishes a second session.
  • the proxy call session control function entity After the network receives the SIP message, the proxy call session control function entity, and/ An example of a method in which a serving call session control function entity adds a session intermediate node to a session path. The process includes the following steps:
  • Session participant A sends a message session request message to S-CSCF-A.
  • the S-CSCF-A adds its own message session address information to the SDP providing information carried in the message session request message, and sends the modified message request message to the S-CSCF-B.
  • the S-CSCF-B adds its own message session address information to the SDP providing information carried in the message session request message, and sends the modified message session request message to the session participant B.
  • the session participant B feeds back the success response message, and the S-CSCF-B adds its own message session address information to the SDP response message carried in the success response message, and sends the modified success response message to the S. -CSCF-A.
  • the S-CSCF-A adds its own message session address information to the SDP response message carried by the success response message, and sends the modified success response message to the session participant A.
  • a TCP connection is established between session participant A and S-CSCF-A.
  • S-CSCF-A and S-CSCF-B terminate and forward the message information sent by session participant A and session participant B in the message session.
  • the S-CSCF in the embodiment may also be a P-CSCF.
  • the embodiment only needs to adjust the timing at which the network adds the address information of the session intermediate node to the session path: proxy call Session control function entity, and/or service call
  • the session control function entity adds the session intermediate node to the session path when receiving the session request response message; the proxy call session control function entity, and/or the service call session control function entity, when receiving the confirmation message of the session request response message
  • the session intermediate node is added to the session path.
  • the foregoing embodiment further exemplifies the method of the embodiment of the present invention by using the IMS system as an example, but the embodiment of the present invention is not limited to the current IMS system network, and is applicable to other technologies developed based on the IMS network architecture. Network, as long as it meets the network architecture.
  • the SDP providing information in the SIP message or the address information of the tongue contact node carried in the SDP response information may also be a list of address information of multiple session contacting nodes.
  • the above embodiments use the message session as an example to describe the method in the embodiment of the present invention.
  • the processing flow is also applicable, and only the session description protocol information needs to be modified into an audio session and a video session.
  • the session description protocol information of the data session can be used, and the specific process is not described here.
  • the establishment of a TCP connection between the session intermediate nodes and between the session intermediate nodes and the session participants in the above embodiments is an example of an MSRP-based message session, which is used to illustrate how to intermediate between session intermediate nodes and intermediate nodes.
  • the connections required by the tongue participants are established. Other types of connections required for the tongue can be derived according to an example. For a session that does not require a connection, the process of establishing a connection can be omitted.
  • the session intermediate node when the session intermediate node is controlled by the P-CSCF, or the S-CSCF, or the AS, the P-CSCF, or the S-CSCF, or the AS and the session intermediate node may perform a message exchange delivery session. Information, and then the session intermediate node is added to the session path by the P-CSCF, or the S-CSCF, or the AS.
  • the system includes: a message dialogue entity 71 and a session intermediate node 72.
  • the message dialogue entity 71 is configured to receive the SIP message carrying the SDP providing information sent by the session participant in the first session, and add the session intermediate node 72 to the session path, where: the message receiving unit 711 and the session intermediate node Add unit 712.
  • the message receiving unit 711 is configured to receive a SIP message carrying the session description protocol SDP providing information sent by the session participant in the first session; the session intermediate node adding unit 712 is configured to add the session intermediate node to the session path.
  • the session intermediate node 72 is configured to receive, and/or forward, the data information communicated in the tongue.
  • the implementation of the session intermediate node adding unit 712 includes: an address information obtaining subunit 701 and an adding subunit 702, and the address information obtaining subunit 701 is configured to obtain the address information of the session intermediate node 72 through the network configuration. Or interacting with the session intermediate node 72 to obtain its address information; the adding sub-unit 702 is configured to add the address information of the session intermediate node 72 to the SDP providing information, and/or the SDP response information.
  • the message dialogue entity 71 may be a P-CSCF having its function, or an S-CSCF, or an AS.
  • the embodiment of the present invention further provides a network device, which is used to add the address information of the session intermediate node in the message session to the session path, and has the same structure as the message dialogue entity 71 in FIG. Praise.
  • the system includes: a message dialogue entity 81 and a session intermediate node 82.
  • the message dialogue entity 81 is configured to receive a SIP message carrying the session description protocol SDP providing information sent by the session participant in the first session, and send a SIP message carrying the SDP providing information or the SDP response information to the session intermediate node 82.
  • the session intermediate node 82 is configured to add itself to the session path, and receive, and/or forward data information delivered in the session, including: a receiving unit 821, an address adding unit 822, and a forwarding unit 823.
  • the receiving unit 821 is configured to receive the SIP message sent by the message dialogue entity 81 and the data information transmitted in the session; the address adding unit 822 is configured to add the address information of the session intermediate node 82 to the session path; and the forwarding unit 823 is configured to forward Data information passed in the session.
  • the message conversation entity 81 may be a P-CSCF having its function, or an S-CSCF, or an AS.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé, un système et un appareil de réseau permettant d'établir une session. Un participant à une session envoie un message SIP d'initialisation de protocole, qui transporte le message d'offre SDP de protocole de description de la session au réseau de la première session; le réseau assemble le noeud intermédiaire de session à la voie de session après réception du message SIP par le réseau; le noeud intermédiaire de la session reçoit et relaie les informations de données transportées par la session. Le participant de la session envoie le message SIP, qui transporte le message d'offre SDP de protocole de la description de la session au réseau, ledit message SIP étant utilisé pour établir la deuxième session; la fonction de commande de session d'appel de mandataire et/ou la fonction de commande de session d'appel de service assemble le noeud intermédiaire de session à la voie de session après réception du message SIP par le réseau; le noeud intermédiaire de session reçoit et relaie les informations de données transportées par la session. Cette invention peut assembler de manière efficace le noeud intermédiaire à la voie de session et répondre au besoins d'application de la session.
PCT/CN2007/001877 2006-07-18 2007-06-14 Procédé, système et appareil de réseau permettant d'établir une session WO2008011790A1 (fr)

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CN200610103305 2006-07-18
CN200610103305.0 2006-07-18
CN 200610109251 CN101110790A (zh) 2006-07-18 2006-08-03 建立会话的方法
CN200610109251.9 2006-08-03

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CN101998318A (zh) * 2009-08-25 2011-03-30 中兴通讯股份有限公司 Ip多媒体子系统呼叫处理方法及装置
CN102158926B (zh) * 2010-02-12 2015-04-01 中兴通讯股份有限公司 媒体路径优化过程中sdp请求的处理方法及装置
CN103139171B (zh) * 2011-11-30 2015-07-01 中国联合网络通信集团有限公司 媒体交换网络系统
CN104468556B (zh) * 2014-12-01 2018-01-19 华为技术有限公司 一种推送业务的实现方法及设备
CN106302503A (zh) * 2016-08-30 2017-01-04 福建星网智慧科技股份有限公司 一种基于freeswitch平台的RTP会话创建方法以及系统
US11716363B2 (en) 2017-11-02 2023-08-01 Telefonaktiebolaget Lm Ericsson (Publ) Messaging resource function
CN111193894A (zh) * 2018-11-14 2020-05-22 中兴通讯股份有限公司 数据传输通道的建立方法及设备、存储介质、系统

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KR20040092231A (ko) * 2003-04-25 2004-11-03 엘지전자 주식회사 에스아이피 서버에서의 미디어 채널의 제어방법 및 이를구현한 통신시스템

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