WO2008011790A1 - Method, system and network apparatus for setting up session - Google Patents

Method, system and network apparatus for setting up session

Info

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
Authority
WO
Grant status
Application
Patent type
Prior art keywords
session
message
intermediate node
information
network
Prior art date
Application number
PCT/CN2007/001877
Other languages
French (fr)
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1069Setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1083In-session procedures
    • H04L65/1086In-session procedures session scope modification
    • H04L65/1093In-session procedures session scope modification by adding or removing participants
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/40Services or applications
    • H04L65/403Arrangements for multiparty communication, e.g. conference
    • H04L65/4053Arrangements for multiparty communication, e.g. conference without floor control

Abstract

This invention presents a method, system and network apparatus for setting up a session. The method includes steps of: session participant sends session initiated protocol SIP message, which carries session description protocol SDP offer message, to network in the first session; the network joins session intermediate node to session path after the SIP message received by the network; the session intermediate node receives and relays data information carried by the session. The method otherwise includes steps of: session participant sends SIP message, which carries session description protocol SDP offer message, to network, said SIP message is used for setting up the second session; proxy call session control function, and/or service call session control function join/s session intermediate node to session path after the SIP message received by the network; the session intermediate node receives and relays data information carried by the session. This invention can efficiently join the intermediate node to session path, and meet application needs of session.

Description

The method of establishing a session, system and network equipment

This application claims priority to July 18, 2006 submitted to the China Patent Office Application No. 200610103305.0, entitled Method "to establish a session ,, the Chinese patent application, and submitted to the China Patent Office on August 3, 2006 , application No. 200610109251.9, entitled priority "method of establishing a session," the Chinese Patent application, the entire content of which is incorporated herein by reference.

FIELD

The present invention relates to network communication technology field, particularly to a method of establishing ^ tongue, systems and network devices.

Background technique

SIP (Session Initiated Protocol, Session Initiation Protocol) is a build, modify, and terminate multimedia sessions in an application layer protocol in an IP network applications including voice, video, games, news, and other call control and online businesses. SIP session is established before the first dialogue, the dialogue as a connected end to end relationship continues for a certain time, the establishment of the dialogue process will determine the path of dialogue messaging. Once the session is established, subsequent messages must be delivered in the SIP message path dialog.

SDP (Session Description Protocol, Session Description Protocol) information can be used to establish various parameters of the given communication session type, communication mode, communication mode,. And communication address information, SDP answer information is given to provide information in the SDP the final selection of the type of information for establishing a communication session, communication, communication parameters, and the mailing address and so on.

Session path by one or more address information composed of a contact node sessions, session-participation session link nodes other than the node side contact session is a session where the intermediate node. After the session before the negotiation is successful, and pass any data information ^ tongue, the session is established between the session path channel adjacent node contact session, the session node contact session where participants send data transfer session in the session channel information, data information transmission channel ^ tongue session by session link between the nodes reaches a session established other sessions where participants contact nodes. Data transfer session through TCP (Transmission Control Protocol, Transmission Control Protocol) or packet (Realtime Transfer Protocol, Real-time Transport Protocol) protocol to transmit the RTP, and therefore the process of establishing the session channel may be established TCP process, may be process for the establishment of RTP. If in the future there is a new protocol for transmitting data in a session, the session channel establishment process is the process of establishing new channels defined by the protocol.

Leaving only the path of the first session ^ ^ link node when the server before using the B2BUA (Back-to-Back User Agent, back to back user agent), due to security reasons server topology hiding, etc. may provide information in the address information is sent SDP or keep only the session path in the first session of link node before sending SDP answer message address information.

Session session can be divided into various audio session, video session, data session, the session information and the like. ^ Tongue messaging session participation used instant messaging between the parties associated with a series of other video session, an audio session and a data session collectively non-session message. MSRP (Message Session Relay Protocol, Message Session Relay Protocol) message is used to establish a session. SDP message carries the session participants information in the SIP message, SDP offer carried in the session path information of MSRP. After the SDP negotiation is successful, the session connection node messaging sessions where the participants of the session as well as other contact node MSRP session path in contact with the tongue adjacent nodes to establish TCP (Transmission Control Protocol, Transmission Control Protocol) connections, sessions where the participants session Information nodes sEND (send) on the TCP connection transmitting an instant message command. Session MSRP session path intermediate node as a relay node receives and forwards MSRP instant messaging TCP connection. MSRP session transfer data for transfer via TCP protocol packets MSRP.

IMS (Internet Multiedia Subsystem, IP Multimedia Subsystem) core subsystem is the next generation network, the domain for using the packet bearer channel upper layer control signaling and media transmission, is introduced as a service control protocol SIP protocol, SIP using a simple, easy to expand mediamix convenient features, by separating the service control and bearer control, it provides rich multimedia services. The main functional entities in the MS comprising: a register control session participants, session control functions like call control entity CSCF (Call Session Control Function) ^ application server AS provides various service logic control functions (Application Server), centralized management session participation MGCF (Media Gateway Control Function, Media Gateway Control Function) to contract with the home session participant data server HSS (Home Subscriber server) and the circuit switched network for realizing interworking, the current location of the session participants via proxy node P-CSCF ( proxy CSCF) access MS, session and service triggering service node home domain call control unit control and service control interaction with the AS by its registration is completed.

In IMS, the process of establishing a session message through the messaging session intermediate nodes as follows:

By the application server as the messaging session intermediate nodes, S-CSCF (serving CSCF) entity according to the trigger rules, the message carrying the session SDP offer information to the call request message sent to the message session intermediate node, the message session intermediate node address information about increased messaging session path, after a session negotiation message successfully received by the intermediate node and forwards the message session transfer message data channel in this method of session message to establish a session, the message path is determined in the message processing of the call request. Since the non-session message provided description information message does not include a session call request message carries the SDP, S-CSCF entity message will not be forwarded to the message session intermediate node, the intermediate node A message will not be added to the session message path. After resending the message session the SDP information, since the message session intermediate nodes not in the message path, and therefore unable to obtain the message session negotiation request, will eventually cause the message session intermediate node is unable to receive and forward data information transfer message session. Seen, this method can not be applied to a session establishment message non-session message increased messaging session.

For such applications, the prior art proposes a scheme: the participants after the establishment of a non-message conversation, if you want to perform messaging session, by the party to send a message session Qian seeking purpose participants request the establishment of a new dialogue, this new dialogue is different from the non-message conversation session is located.

In implementing the present invention, the inventor finds at least the following disadvantages of the prior messaging session such an increase in the non-message mode process tongue ^: network can not new and the original session request message associated with the session, a new network will message routing session request reallocation, reallocation of resources to the session, re-charging, and will reject the new session request message, message session can not be established in the case of the original session is not released when the network decided to end the state.

In addition, during the session setup message, if not in a call information request message carries the SDP offer, but carries the SDP offer information in a response message in the call request message, carrying the above method can not call SDP offer request message in response to information message to the session message triggers the intermediate node, the intermediate node message session can not own address information to the message the session path.

In addition, due to the 3GPP (Third Generation Partnership Projects, Third Generation Partnership Project) defined path session establishment procedure specified in the message can not be modified after the session where the session is established dialogue after the non-message session is established, if not non-messaging session intermediate node message conversation session message path is located, the network can not be an intermediate message ^ tongue node into the non-session message to establish a dialogue message ^ ¾ ■ located. For non-presence of the same message can not be ^ ^ tongue tongue intermediate node is added to the session path in question, for example: after the session establishment into the required right foot ^ F listener, the listening device at this time is added as the need for an intermediate node to the subsequent session session establishment, thereby acquiring monitor data. At this point if the listening device for no message path dialog ^ where the network can not be inserted into the intermediate node as a listening device to a session in the session path, so that the network monitor failure.

SUMMARY

Embodiment of the present invention provides a method of establishing a session, system and network devices to be inserted into the intermediate node will then route the session, the session needs to meet with Shu.

For this purpose, a technical solution for Example 4 of the present invention are as follows:

A method for establishing a session, the method comprising:

Session participants can transmit a session description protocol SDP offer Session Initiation Protocol SIP message information to the network in a first conversation;

Network after receiving the SIP session message is added to the intermediate node in the session path;

The intermediate node receives the session and forward the session information transmission.

A method for establishing a session, the method comprising:

Session Initiation Protocol session participants have message carrying network session description protocol SDP offer information

SIP message, the SIP message for establishing a second session;

After the network receives the SEP message, a proxy call session control function entity, and / or ϋ good service call session control function entity, then the intermediate node will join the session path;

The tongue ^ intermediate node and forwards the packet transmitted in the session.

A method of establishing ^ tongue system, comprising: a message dialogue session entity and the intermediate node,

The dialogue message entities participating in the session for receiving the session description protocol SDP carries sends the first session information in SIP Session Initiation Protocol message, and the intermediate node is added to the session in the session path, comprising:

Message receiving means for receiving a session carries the session participating party sends a first session in the SIP message information described in the SDP protocol;

Session intermediate node adding unit for the intermediate node is added to the session in the session path; intermediate node of the session, for receiving and / or forwarding the data transfer session. A system for establishing a session, comprising: a message dialogue session entity and the intermediate node, the message conversation entity, Session Initiation Protocol for carrying session description protocol SDP offer received session participant information transmitted in a dialogue Zi SIP message, the SIP session message to the intermediate node transmitting information carrying SDP offer or SDP answer information;

An intermediate node of the session, the session for added their path, and receiving and / or forwarding of data in the session information transmission, comprising:

Receiving means for transmitting data messages and SIP session entity receiving the message sent by the session;

Address adding unit for the intermediate node address of the session information to the session path; forwarding unit configured to forward the data information transfer ^ tongue.

A network device, the address of the session for the intermediate nodes in the message information to the live conversation path, comprising:

Message receiving means for receiving a Session Initiation Protocol session participating in a session description protocol SDP offer carrying the information sent by the SIP message in the first session;

Session intermediate node adding unit for the intermediate node is added to the session path ^ tongue.

Technical solutions provided by the above embodiment of the present invention may be seen that the Example sending a session request message to the network when requesting establishment of a session the session participating parties according to the present invention, the network after receiving the session request message, it will be added to the intermediate node the session path, the intermediate node by the session termination information and forward the session transfer, the application needs to meet the session.

In an embodiment of the present invention, not only the complete session intermediate node is added to the function of the session path by the application server, but also ^ latch control functional entity or a serving call session control function entity by a network proxy call to perform this function , thereby allowing operators the flexibility to deploy a network to provide better service session.

BRIEF DESCRIPTION

FIG 1 is a flowchart of a method to achieve a first embodiment of the present invention;

FIG 2 is a flow chart for implementing the method of the second embodiment of the present invention;

FIG 3 is a flowchart of a method of the present invention to achieve the third embodiment;

FIG 4 is a schematic diagram of the system structure of a conventional IMS;

FIG 5 is a flowchart of an embodiment to achieve a method of the present invention, four Zi;

FIG 6 is a fifth embodiment of the implement according to the present invention, a flowchart of a method; FIG. 7 is a block diagram of the system of the present invention is to establish a session to the first embodiment;

FIG 8 is a block diagram of the system of the present invention is to establish a session Zi two embodiments.

detailed description

Embodiment of the present invention is a method for establishing a session according to the session participant is transmitted to the network a first session information is carried SEP SDP offer message, the network receives the SIP message, will be added to the intermediate node, then the session path, to receive and forward data transfer in the session by the session intermediate node. Network address acquiring the session information of the intermediate node, the intermediate node is added to the session in the session path; SDP offer or network carrying information, or sends a SIP message to the session the SDP answer information the intermediate node, the intermediate node by the session themselves ^ path is added to the tongue. It represents the first conversation session has been established, that is, to establish a session to this embodiment does not require the establishment of a new session, but the establishment of a new session of the session has been established.

Another method of establishing a session in the embodiment of the present invention is a message carrying the network session participants have

After the SDP offer in SIP information message, the SIP message for establishing a second session, the network receives the SIP message, by the addition of P-CSCF entity, and / or S-CSCF entity to the intermediate node session in the session path, to receive and forward the session data transfer by the intermediate node ^ tongue. A dialog represents the second session has not been established, that is, this embodiment is established session need to create a new session, to establish a new session in the new dialogue.

In order to make those skilled in the art better understand the present invention, the following examples of the present invention will be further described in conjunction with the accompanying drawings and the fine paradox embodiments.

Referring to FIG. 1, FIG. 1 shows the implementation flow of a method of the present invention according to the first embodiment. In this embodiment, a given participant transmits to the network a first session information is carried in SIP SDP offer message, acquires the network address information of the session intermediate node, the intermediate node to the tongue ^ join the session path method examples. The process comprises the steps of: establishing a session with a party A non-message session between party B and the session participants.

1. A session participants send a message to increase the session request message to the network A, carried in the message

SDP provides the following information:

INVITE sip: participant_B@homeB.net SIP / 2.0

Content-Type: application / sdp Content-Length: (...) v = 0

o = - 2987933615 2987933615 IN IP6 5555 :: aaa: bbb: ccc: ddd

s-- c = IN IP6 5555 :: aaa: bbb: ccc: ddd

t = 0 0

m = message 3402 TCP / MSRP *

a = path: msrp: // [5555 :: aaa: bbb: ccc: ddd]: 3402 / s 111271; tcp

2. A network configuration data by obtaining address information of the intermediate node A of the session, the address information of the intermediate node A will then be added to the network A SDP offer message, and transmits the modified message to the network B, the modified message as follows:

INVITE sip: participant- B@homeB.net SIP / 2.0

Content-Type: application sdp

Content-Length: (...) v = 0

o = - 2987933620 2987933620 IN IP6 7777 :: eee: ddd: ccc: aaa

s = - c = IN IP6 7777 :: eee: ddd: ccc: aaa

t = 0 0

m = message 3927 TCP / MSRP *

a = path: msrp: 〃 [7777:: eee: ddd: ccc: aaa]: 3927 / s222371; tcp

3. The network configuration data acquisition session B by the intermediate node B to the address information, the address information of the network B, then the intermediate node B will be added to the SDP offer message, send a message to the session participating parties B and the modification, the modified message as follows: INVITE sip: participant- B@homeB.net SIP / 2.0

Content-Type: application / sdp

Content-Length: (...) v = 0

o = - 2987933630 2987933630 IN IP6 9999: xcc: aaa: bbb: ddd

s = - c = IN IP6 9999 :: ccc: aaa: bbb: ddd

t = 0 0

m = message 3333 TCP / SKP *

a = path: msrp: 〃 [9999:: ccc: aaa: bbb: ddd]: 3333 / s317121; tcp

4. Session Party B transmits the success response message to the network B, the message carries the SDP answer information is as follows:

SIP / 2.0 200 OK

Content-Type: application / sdp

Content-Length: (...) v-0

o-- 29879336302987933630IN IP6 5555 :: eee: fff: aaa: bbb

s = - c = IN IP6 5555 :: eee: fff: aaa: bbb

t = 0 0

m = message 3402 TCP MSRP *

a = path: msrp: 〃 [5555 :: eee: fff: aaa: bbb]: 3402 / s417121; tcp

The parties to the session participating network B B transmits ACK (acknowledgment) in response to message 6. session participants session to establish a TCP connection B intermediate node B; B or network address information of the session to a party B is transmitted through the intermediate session node B message intermediate session node B to establish a TCP connection to the session participant B.

7. A network B transmits success response message to the network, the address information in the session response message to the intermediate node B is added in the SDP response message, as follows:

SIP / 2.0 200 OK

Content-Type: application / sdp

Content-Length: (...) v = 0

o = - 2987933640 2987933640 IN IP69999 :: ccc: aaa: bbb: ddd

s = - c = IN IP6 9999:: ccc: aaa: bbb: dddt = 0 0

m = message 3402 TCP MSRP *

a = path: msrp: // [9999 :: ccc: aaa: bbb: ddd]: 3402 / s317122; tcp

8. Network A sends an ACK message to the network B.

9. A network address information of the session by the intermediate node B message to the session intermediate node A, node A mid-session session to establish a TCP connection to the intermediate node B; B, or the network session to the intermediate node A to the address information transmitted through a message ^ tongue intermediate node B, an intermediate session node B to establish a TCP connection to the intermediate session node A.

10. A network to the session participating party A sends a success response message, the address information in the session success response message to the intermediate node A in the SDP answer information is added, as follows:

SIP / 2.0200 OK

Content-Type: application / sdp

Content-Length: (...) v-0

o-- 2987933642 2987933642 IN IP6 7777 :: eee: ddd: ccc: aaa

s = - c-IN IP67777 :: eee: ddd: ccc: aaa

t = 0 0

m-message 3927 TCP / MSRP *

a = path: msrp: // [7777 :: eee: ddd: ccc: aaa]: 3927 / s222372; tcp

11. A session participant receives a successful response message, A sends an ACK message to the network.

12. A session and the session participants intermediate node A TCP connection is established; A or the network address information of the session participants A message is transmitted through the session to the intermediate node A, the intermediate node A to establish a TCP session connection A to the session participants.

13. A session participants send data information transfer message to the session A session intermediate node.

14. The intermediate node A sends a session message to the intermediate node B ^ session data in the information transfer. 15. The intermediate node B session participant B transmitting data information message transfer session to session.

16-- 18. session participants B returns a success response message.

Step 2 and Step 3, the session between the network A and the intermediate node A, and B or the message session interactive network intermediate node B may use the SIP protocol, H.248 protocol, HTTP (Hypertext Transfer Protocol, Hypertext Transfer Protocol) protocol, conventional circuit domain protocol, Diameter protocol, obtain the address information of the session by the intermediate node interaction.

Tramp 6, 9, 12 to the network A and the session between the intermediate node A, and B or the message session interactive network intermediate node B may use the SIP protocol, H.248 protocol, HTTP protocol, the conventional circuit domain protocol, Diameter protocol , the address information of the session to obtain the intermediate node through the interaction of other nodes.

If the session request message carries the SDP offer information response, and the request response message in acknowledgment message carries the SDP answer session information, the present embodiment only requires adjustment of the timing of the address information will be added to the intermediate path of the session, then the network node: The Network when receiving the session request message and the session response message confirmation request response message will then address information of the intermediate node is increased to the session path.

Referring to FIG. 2, FIG. 2 shows an implementation flow of a second embodiment of the method of the present invention. In this embodiment, a given participant transmits to the network a first session information is carried in SIP SDP offer message, the network carrying information SDP offer, the SDP answer or send SIP messages to the session information an intermediate node, by the session intermediate node is added to the exemplary method of their path the tongue ^. The process comprises the steps of:

1. A session participants send a message to increase the session request message to the network A, the message carries the SDP information.

. A network A session request to the intermediate node A sends a session message, the destination address information in the message address information of the intermediate node A session, such as: Request-uri is application_A@homeA.net, the message carries the session participants A, SDP information.

B. intermediate session node A forwards the session request message to the network A, after the SDP message carries the intermediate node A modified session information.

2. A session intermediate node to its own address information to the information in the SDP offer, and transmits the modified message to the network B.

. Network B C B sends a session request to the intermediate node a session message, the destination address information in the message is the address information of the intermediate session node B, for example: Request-uri is application_B@homeB.net, the message carries the SDP information.

D. B intermediate session node B sends a request message to the network session, the message carries the SDP after intermediate session node B modifies information.

3. Network B will then address information of the intermediate node B is added to the SDP offer message, and transmits the modified message to the session participating party B.

4. session participants to the network B B transmits success response message, the message carries the SDP answer letter E. B Network Node B sends a session intermediate success response message, which carries the session participating parties B SDP answer information.

f. intermediate session node B transmits an acknowledgment message success response message to the network B.

5. Network B Party B sends an ACK message in response to the session.

6. B session participants to the session to establish a TCP connection intermediate node B; intermediate node B or session to establish a TCP connection to the session participating parties B.

g. session intermediate node B transmits success response message to the network B, the address information in the session message to the intermediate node B is added in the SDP answer information.

7. Network B transmits success response message to the network A, the address information in the session response message to the intermediate node B is added in the SDP answer information.

H. A network packet is forwarded to the intermediate node A session response message.

i. A intermediate session node A sends a response message to the network.

8. Network A sends an ACK message to the network B.

j. Network B sends a response message to the intermediate node B session.

9. A network address information of the intermediate node B will then transmit a message through the session to the intermediate node A, node A mid-session session to establish a TCP connection to the intermediate node B; B or session intermediate node establishes a TCP connection to the intermediate node A session.

10. A network participant A transmits success response message to the session, the session will be a success response message to the intermediate node A is added to the address information in the SDP answer information.

11. A session participant receives a successful response message, A sends an ACK message to the network.

12. A session and the session participants intermediate node A TCP connection is established; intermediate node A or session to establish a TCP connection A to the session participants.

13. A session participants send data information transfer message to the session A session intermediate node.

^ 14. A tongue intermediate node transmits the data information message transfer session to the session intermediate node B.

15. The intermediate node B session participant B transmitting data information message transfer session to session. 16-- 18. session participants B returns a success response message.

If the session request message carries the SDP offer information response, and the request response message in acknowledgment message carries the SDP answer session information, the present embodiment only requires adjustment of the timing of the address information will be added to the intermediate path of the session, then the network node: The Network when receiving the session transmission request response message to the session request message to the intermediate node ^ tongue, their session intermediate node is added to the session path; ^ tongue network sends the intermediate node upon receiving a session request response message of acknowledgment message in response to a request tongue ^ message, the intermediate node will join the session to the session own path.

Referring to FIG. 3, FIG. 3 shows an implementation flow of a method of the third embodiment of the present invention.

In this embodiment, a given participant transmits to the network a first session information is carried in SIP SDP offer message, the network will carry the SDP information, or sends a SIP message information to the SDP answer ^ tongue intermediate node by the session said intermediate node is added to the exemplary method of their paths of the tongue. Assuming the establishment of a dialogue between SIP sessions and session participants A non-involved party B messaging session where the Network A and Network B is set: Call-ID is 425928@homeA.net, to-tag for the 7742, from-tag to 6472. The process comprises the steps of:

1. The embodiment shown in Figure 1 with Step 1 embodiment.

2. A destination address of the network sends a session request message, the network address information of the message A to a non-session message route entity in network B, or B will be able to identify the network address information of the session request message as a message in the session route request message with the session request message carries the information of the original message route Alternatively, in the session request message carries media information of the session participants a, wherein the tongue comprises ^ negotiation information message, the network according to the trigger rule a the session request message to the session intermediate node a, the session request message carries the SDP information in step 101 as in Example 1, additional examples of information carried in the session request message is as follows:

INVITE sip: application- B@homeB.net SIP / 2.0

To: <application_B @ omeB .net>

From: <application- A@homeB.net>; tag = 7744

Replaces: 425928@homeA.net; to-tag = 7742; firom-tag = 6472

3. A session intermediate node to its own address information to the session the SDP offer message, the intermediate node A forwards the session modification request message to the network A, the message carries the SDP session intermediate node A provides information as to modify the request the procedure of Example 2 in embodiment 1 shown in FIG.

5. The network 4 to A ^ ^ B request message sent to the network, network B forwards the session request message to the intermediate node according to the trigger rule session B.

6. Session intermediate node B to its own address information to the session the SDP offer message, the intermediate node B forwards the session modification request message to the network B, the session request message carries the SDP ^ tongue intermediate node B modifies information , as shown in step 3 in the embodiment 1 shown in FIG.

7. Network B replacement information according to the original path of a message path with the session request message of the session request message carries the session sends a release message to the network A in the original session, the session request message with the session created to replace the original dialog message path.

8. The procedure of Example 3 with the embodiment shown in FIG. Session SDP 9 ~ 13. Party B transmits the success response message to the network B, network B intermediate node B forwards the session success response message, the intermediate node B to join the session to their success response message carries the response message session session intermediate node B and Party B TCP connection is established, the message success response message carries information of the session negotiation result, as shown in step 1 in Example 4.

14-- 19. The intermediate node B sends the session to the session intermediate node A successful response message, the intermediate node A and will live session intermediate node B to establish a TCP connection, a session negotiation message success response message carries information of the result, shown in Figure 1 the procedure of Example 7 embodiment.

20-- intermediate session node 24. A success response message sent to the network A, network A to Party A ^ tongue forwards the success response message, the intermediate node A to join the session to their success response message carries the SDP answer information , the intermediate node a and the session the SDP session participants a TCP connection is established, the success response information carried in the response message, the procedure of Example 10 is shown in FIG.

25 - The procedure of Example 13 to 18 with 30. The embodiment shown in FIG. 1.

In the above embodiments, the session information to the intermediate node address operation message ^^ path function entity may be controlled by a proxy call session, or serving call session control function entity, or the completion of the application server.

Below IMS system as an example, are detailed further below.

Referring to FIG. 4, FIG. 4 shows a system configuration of the prior art IMS:

Wherein, CSCF entity for controlling user registration, session control and other functions, including: S-CSCF and P-CSCF entities 41 entity 42; AS (Application Server, Application Server) 43 for providing a variety of service, Series inverse control; the HSS (Home Subscriber server, a Home Subscriber server) 44 for centralized management of user subscription data; MGCF (media gateway control function, a media gateway control function) entity 45 for implementing interworking with circuit switched network; user agent node P-CSCF access IMS; service control and service triggering an interactive session with the AS control and by its home domain registration service node S-CSCF completed.

Can be based on, it may also be on the IMS system, the intermediate node in the session P-CSCF entities on the entity in the S-CSCF or AS other functional entities within the system.

Referring to FIG. 5, FIG. 5 shows an implementation flow of a fourth embodiment of the present inventive method. In this embodiment, a given session participants send to the network a first session information is carried in SIP SDP offer message, the network will carry the SDP information, or sends a SIP message to the session the SDP answer information the intermediate node by the session said intermediate node is added to the sample their method of the session path. The process comprises the steps of:

1 'to 10'. A session participants send a message to the network a non-session request message, the network A non-message session request message to the intermediate node as the session message AS-A, AS-A non-message the session request message forwarded to the network B, network B the non-message session request message to the intermediate node as the session message aS-B, aS-B the non-message session request message to the session participating parties B, participants participating parties B a feedback success response message, and establish a path of the first message dialog, aS-a and aS-B as an intermediate node in a session message in the message path in the first conversation.

1 to 2. A session participant sends a first dialogue session request message to the network A message carrying the message in the message information ^ tongue, the network A message session request message to the AS-A.

3. As a messaging session intermediate node A for the session participants and services AS-A message session own address information to the message session request message carries the SDP information, and the session after the modification request message sent to the network B , information provided in the message carries SDP modified.

4 to 5 as an intermediate node for messaging session session participants B and services AS-B message session own address information to the session request message carries the SDP offer information message, and the message session modification request message transmitted after the the session participants

6-10. Session participants B returns a success response message, AS-B message own address information to the session in response to the success response information carried in the SDP message, and the success of the modified response message to the AS-A, AS-B and B parties to establish a TCP connection.

11 - 14. AS-A own session message is added to the address information in response to a successful response information carried in the SDP message, and the success of the modification response message to the session participating parties A, AS-A and AS-B establish a TCP connection.

15-17. Session participants A and AS-A TCP connection is established.

18-23. AS-A, and end the session and forwards the AS-B party A and session participating parties B sends the message information in the message session.

AS embodiment may also be a P-CSCF, or S-CSCF. If the session request message carries the SDP offer information response, and the request response message in acknowledgment message carries the SDP answer session information, the present embodiment only requires adjustment of the timing of the address information will be added to the intermediate path of the session, then the network node: The Network when receiving the session request response message to the intermediate node to the session in the session path; network upon receiving the session request response message acknowledgment message will be added to the session, then the intermediate node path.

Referring to FIG. 6, FIG. 6 shows an implementation flow of a fifth embodiment of the method of the present invention.

In this embodiment, the given direction of the network session participation information transmitted SDP offer carrying a SIP message, the SIP session establishing a second message, the network receives the SIP message by the proxy call session control function entity, and / or or serving call session control function entity will be added to the sample, then the intermediate node in the session path method. The process comprises the steps of:

1. A session participant sends a message to the session S-CSCF-A request message.

2. S-CSCF-A message session own address information to the session request message carries the SDP offer message information, and the modified request message to the tongue ^ S-CSCF-B.

3. S-CSCF-B message session own address information to the message session request message carries the SDP information, and the modified message session request message to the session participating party B.

4 to 5. Party B feedback session success response message, S-CSCF-B message session own address information is added to the successful response message carries the SDP response information, and the success of the modification response message to the S -CSCF-A.

6 ~ 9. S-CSCF-A session own address information to the message success response message carries the SDP answer information, and the success of the modified response message to the session participating party A.

10. The session participating parties to establish a TCP connection between the A and S-CSCF-A.

11. S-CSCF-A, and establishes a TCP connection between the S-CSCF-B.

12. S-CSCF-B and establish a TCP connection between session participating parties B.

13 ~ 18. S-CSCF-A end, and S-CSCF-B and forwards the session participants A and session participating parties B sends the message information in the message session.

S-CSCF embodiment may also be P-CSCF.

If the session request message carries the SDP offer information response, and confirmation request response message carries the SDP answer message information in the session, the present embodiment requires only the address information will be added to the network to adjust the path of the session, then the intermediate node when: a proxy call session control function entity, and / or turnip service call session control function entity upon receiving the session request response message will be added to the intermediate node, then the session path; proxy call session control function entity, and / or serving call session control function entity in when receiving the session request acknowledgment message in response to the message, then the intermediate node will be added to the session path.

In the above embodiment IMS system as an example of an embodiment of the method of the present invention it has been further illustrated, but is not limited to embodiments of the present invention is applied to what is now called IMS network system, but also applicable to an IMS-based network architecture developed by other network, as long as it satisfies the network architecture.

In the above embodiment, SIP message carries the SDP information or SDP answer node address information of the tongue contact information may also be carried in the address information list of a plurality of nodes contact sessions.

The above embodiments are an example messaging session embodiments of the method of the present invention has been described for an audio session, video session, the data session is equally applicable processing flow, only need to modify the session description protocol information as an audio session, video session, session description protocol information to the data session, the specific process will not be repeated here.

'The above embodiments between the intermediate node embodiment sessions and a session intermediate node and the session participants as an example of establishing a TCP connection session based on the MSRP message, for example of how session between the intermediate node and the intermediate node and the tongue ^ ^ ^ tongue involved in establishing the required connection between the side of the tongue, other types of connections may be required ^ tongue derived according to an example, for the need to establish a session connection establishment process connection can be omitted.

In the above embodiments, when a session by the intermediate node P-CSCF, or S-CSCF, AS, or control, may also be a session transfer message interaction between P-CSCF, or S-CSCF, and the AS session or the intermediate node information, then the P-CSCF, or S-CSCF, AS session or the intermediate node is added to the session path.

Referring to FIG. 7, there is shown a block diagram of a first embodiment of the present invention is embodiment a session establishing system: the system comprising: an intermediate entity message dialogue session 71 and node 72. Wherein the dialogue message entity 71 for receiving a session participation information carries the SDP offer in SIP message sends the first session, and the session is added to the intermediate node 72 in the session path, comprising: a message receiving unit 711 and mid-session node adding unit 712. Wherein the message receiving unit 711 for receiving session description protocol SDP carries the session participation information provided in the SIP message sent by a first conversation; intermediate session node adding unit 712 for the intermediate node is added to the session in the session path. Session for receiving the intermediate node 72, and / or forward the data information transfer ^ tongue. One implementation session intermediate node adding unit 712 shown in Figure 7, comprising: an address information acquisition sub-unit 701 and adding sub-unit 702, the address information acquisition sub-unit 701 for acquiring the configuration session through the intermediate network node address information 72 or with the intermediate node 72 interactive session, obtains its address information; adding subunit intermediate node 702 for a session with the address information of the SDP information 72, and / or information in the SDP answer.

In this embodiment, message conversation entity P-CSCF 71 may have its function, or the S-CSCF, or AS.

To this end, embodiments of the present invention further provides a network device, the address information of the session for the intermediate node is added to the message session session path, like message conversations entity structure of FIG. 771, which is not Like later.

The method is described in detail the process of establishing a session may refer to the foregoing embodiment of the present invention using the system in this embodiment.

Referring to FIG 8, shows a schematic block diagram of the present invention establishes ^ tongue of the second embodiment of the system: the system comprising: message dialogue session entity and the intermediate node 81 82. Wherein the means for receiving the message dialogue session entity 81 involved in carrying session description protocol SDP offer information in the SIP message sent by the first dialogue session to the intermediate node 82 transmits the SIP message carrying the SDP information or SDP answer information; session for the intermediate node 82 is added to the session their path, and receiving and / or forwarding the data transmission session, comprising: a receiving unit 821, adding unit 822 and an address forwarding unit 823. The receiving unit 821 for receiving a message dialog entity 81 SIP message sent and data transmission session; address adding unit 822 for session information of the intermediate node address 82 is added to the session path; forwarding unit 823 for forwarding transmitting the session information data.

In this embodiment, message conversation entity P-CSCF 81 may have its function, or the S-CSCF, or AS.

Visible, using the system according to the embodiment of the present invention, not only can be done by the AS session intermediate node is added to the ^ functions of the tongue in the path, but can also perform this function by a network P-CSCF or S-CSCF, thereby making network operators the flexibility to deploy, provide better service session.

Although the present invention is depicted by way of example, those of ordinary skill in the art know that there are many modifications and variations of the present invention without departing from the spirit of the invention, it intended that the appended claims cover such modifications and variations without departing from the spirit of the invention.

Claims

Rights request
1. A method for establishing a session, characterized in that, said method comprising:
Carrying session description protocol SDP offer information network session initiation protocol SIP message sent by receiving a session participation in a first conversation;
Mid-session by the network or the node itself, then the intermediate node to the session path; intermediate node receives the session and forward the session information transmission.
2. The method according to claim 1, wherein the step of the intermediate network node to be added, then the session path comprises:
Obtaining address information session intermediate network node;
Added to the session path according to the address information in the session intermediate node.
3. The method according to claim 2, characterized in that the session based on the address information of the intermediate node is added to the session path step comprises:
Network address information of the session to the intermediate node of the SDP offer added information, and / or information in the SDP answer.
4. The method according to claim 2, characterized in that, the network obtains the address of the intermediate session node comprises:
The intermediate node network configuration to acquire the session information through the network address; or
Intermediate network node to interact with the session, get the address information sessions intermediate nodes.
Step 5. The method as claimed in claim 4, wherein the intermediate network node to interact with the session, the session obtains the address of the intermediate node comprising:
SIP protocol message by the network, or H.248 protocol message, or a Hypertext Transfer Protocol (HTTP) message, or a conventional circuit domain protocol message or a Diameter protocol message to interact with the session intermediate node, acquires the address information of the intermediate tongue ^ nodes.
6. The method according to claim 1, wherein said intermediate session node itself, then the intermediate node to the session path comprises the step of:
Network carrying information SDP offer or SDP answer information to the SIP message to the session intermediate node;
After the session the intermediate node receiving the SIP message, the session will be added to its own path.
7. The method of claim 6, wherein said intermediate session node to join their conversation path step comprises:
The intermediate node session own address information to the SDP information, and / or information in the SDP answer.
8. The method of claim 1, wherein said intermediate node then be added to the functional entity to the session path:
Proxy Call Session Control Function entity, or service call session control function entity, or application server.
Step 9 A method as claimed in claim 1, characterized in that the intermediate node receives the session and forward the session information transmission comprises:
The intermediate node to establish the session session path;
Data transmission session participants in the session by the intermediate node reaching session session channel;
The intermediate node receives the session and forward the session information transfer channel.
10. A method for establishing a session, characterized in that, said method comprising the steps of:
Carrying the network receives a session description protocol of the session participant sends a Session Initiation Protocol SDP offer information of a SIP message, the SIP message for establishing a second session;
After the network receives the SEP message, a proxy call session control function entity, and / or serving call session control function entity, then the intermediate node will join the session path;
The intermediate node receives the session and forwards the packet transmitted in the session.
11. The method according to claim 10, characterized in that, after the network receives the SIP message by the proxy call session control function entity, and / or serving call session control function entity to the intermediate node to the tongue ^ ^^ path comprises the step of:
A proxy call session control function entity, and / or serving call session control function entity, then the intermediate node will be added to the address information of the SDP information, and / or information in the SDP answer.
12. The method according to claim 11, characterized in that the intermediate node receives the session and forward the packet delivery session comprises:
The intermediate node to establish the session session path;
Data transmission session participants in the session by the intermediate section reaches session session channel 'accounts.
The intermediate node receives the session and forward the session information transfer channel.
13. A system for establishing the session, characterized by comprising: message dialogue session entity and the intermediate node,
The dialogue message entities participating in the session for receiving the session description protocol SDP carries sends the first session information in SIP Session Initiation Protocol message, and the intermediate node is added to the session in the session path, comprising:
Message receiving means for receiving a session carries the session participating party sends a first session in the SIP message information described in the SDP protocol;
Session intermediate node adding unit for the intermediate node is added to the session in the session path; intermediate node of the session, for receiving and / or forwarding the data transfer session.
14. The system of claim 13, wherein said intermediate node tongue ^ adding unit comprises:
The address information acquisition sub-unit, configured to acquire the session through the intermediate network node address information, session or interacting with the intermediate node, obtaining address information of the session intermediate node; adding subunit, for the address information of the intermediate node is added to the session the SDP offer information, and / or information in the SDP answer.
15. The system of claim 13 or claim 14, wherein said entity is a message conversation: Proxy Call Session Control Function entity, or serving call session control function entity or an application server.
16. A system for establishing the session, characterized by comprising: message dialogue session entity and the intermediate node,
The dialogue message entities participating in the session for receiving the session description protocol SDP carries the transmission side in the first Session Initiation Protocol dialog information providing SIP message, to the intermediate node transmits the session information carried in the SDP offer or SDP answer information SIP message;
An intermediate node of the session, the session for added their path, and receiving and / or forwarding of data in the session information transmission, comprising:
Receiving means for receiving a SIP message sent by the entity and message conversation data transfer session; address adding unit for the intermediate node address of the session information to the session path; forwarding unit, configured to forward transmitting the session information data.
17. The system of claim 16, wherein said entity is a message conversation: Proxy Call Session Control Function entity, or serving call session control function entity or an application server.
18. A network device, the address information of the session for the intermediate node is added to the message session in the session path, characterized by comprising:
Message receiving means for receiving a Session Initiation Protocol session participating in a session description protocol SDP offer carrying the information sent by the SIP message in the first session;
Session intermediate node adding unit for the intermediate node is added to the tongue ^ ^ tongue path.
19. The network device according to claim 18, wherein said intermediate session node p force adding means comprises:
The address information acquisition sub-unit, configured to acquire the session through the intermediate network node address information, session or interacting with the intermediate node, obtaining address information of the session intermediate node; adding subunit, for the address information of the intermediate node is added to the session the SDP offer information, and / or information in the SDP answer.
PCT/CN2007/001877 2006-07-18 2007-06-14 Method, system and network apparatus for setting up session WO2008011790A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN200610103305.0 2006-07-18
CN200610103305 2006-07-18
CN 200610109251 CN101110790A (en) 2006-07-18 2006-08-03 Method for establishing conversation
CN200610109251.9 2006-08-03

Publications (1)

Publication Number Publication Date
WO2008011790A1 true true WO2008011790A1 (en) 2008-01-31

Family

ID=38981134

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/001877 WO2008011790A1 (en) 2006-07-18 2007-06-14 Method, system and network apparatus for setting up session

Country Status (2)

Country Link
CN (1) CN101110790A (en)
WO (1) WO2008011790A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102158926B (en) * 2010-02-12 2015-04-01 中兴通讯股份有限公司 Method and device for processing SDP (Session Description Protocol) request in media path optimizing process
CN103139171B (en) * 2011-11-30 2015-07-01 中国联合网络通信集团有限公司 Media exchanging network system
CN104468556B (en) * 2014-12-01 2018-01-19 华为技术有限公司 For pushing implementation method and equipment business

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030115332A1 (en) * 2001-05-23 2003-06-19 Bernhard Honeisen Communication of information
KR20040092231A (en) * 2003-04-25 2004-11-03 엘지전자 주식회사 Control Method of Media Channel at SIP Server and The Communication System with Said Method
US20040240399A1 (en) * 2001-10-09 2004-12-02 Angelo Corrao Transcoding arrangement in a session initiation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030115332A1 (en) * 2001-05-23 2003-06-19 Bernhard Honeisen Communication of information
US20040240399A1 (en) * 2001-10-09 2004-12-02 Angelo Corrao Transcoding arrangement in a session initiation
KR20040092231A (en) * 2003-04-25 2004-11-03 엘지전자 주식회사 Control Method of Media Channel at SIP Server and The Communication System with Said Method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
3GPP TS 23.228 V5.13.0 IP MULTIMEDIA SUBSYSTEM 31 December 2004, *
ROSENBERG J. ET AL. RFC 3261 SIP: SESSION INITIATION PROTOCOL *

Also Published As

Publication number Publication date Type
CN101110790A (en) 2008-01-23 application

Similar Documents

Publication Publication Date Title
EP1389862A1 (en) Lawful interception for VoIP calls in IP based networks
US20060034195A1 (en) SIP message extension for push to watch service
US7058042B2 (en) One-to-one communication
US20060072526A1 (en) Change of resource reservation for an IP session
US20080043717A1 (en) Exchange Protocol For Combinational Multimedia Services
US20050058125A1 (en) IP-based services for circuit-switched networks
US20040190702A1 (en) Conference call initiation
US20060092970A1 (en) System and method for VoIP call transfer using instant message service in an IP multimedia subsystem
US20050041578A1 (en) Setting up communication sessions
US20050021616A1 (en) Method for managing sessions between network parties, methods, network element and terminal for managing calls
US20050105511A1 (en) Method and system for establishing a media session
US20090313378A1 (en) Remote Media IMS Sessions
US20040190498A1 (en) Method, system and gateway device for enabling interworking between IP and CS networks
US20040037406A1 (en) Method and system for exchanging instant messages in a multi-party conference call
US20050213580A1 (en) System and method for enforcing policies directed to session-mode messaging
US20100211689A1 (en) Distribution of shared content streams in communications networks
US20060242310A1 (en) Session initiation from application servers in an IP multimedia subsystem
US20080239996A1 (en) Sharing Ongoing Data Session
US20050243746A1 (en) Session inspection scheme
US20080162705A1 (en) Dynamic service triggers in communication networks
CN101052161A (en) Method and system for realizing IMS business intercommunication
CN101364874A (en) Medium transferring method, terminal and application server
CN1893427A (en) Method for conducting business support ability consultation
US20040255039A1 (en) Method, system and network element device for controlling sessions between terminals
US20100146142A1 (en) Method, application server and user equipment for transferring media streams of multimedia session

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: 07721450

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

NENP Non-entry into the national phase in:

Ref country code: RU

122 Ep: pct app. not ent. europ. phase

Ref document number: 07721450

Country of ref document: EP

Kind code of ref document: A1