CN101291322A - Method, system and apparatus for differentiating sessions - Google Patents

Method, system and apparatus for differentiating sessions Download PDF

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Publication number
CN101291322A
CN101291322A CNA2007101296883A CN200710129688A CN101291322A CN 101291322 A CN101291322 A CN 101291322A CN A2007101296883 A CNA2007101296883 A CN A2007101296883A CN 200710129688 A CN200710129688 A CN 200710129688A CN 101291322 A CN101291322 A CN 101291322A
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China
Prior art keywords
session
identification number
user terminal
message
network element
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CNA2007101296883A
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Chinese (zh)
Inventor
朱东铭
张恒梁
叶松海
丁春燕
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CNA2007101296883A priority Critical patent/CN101291322A/en
Priority to PCT/CN2008/000777 priority patent/WO2008125018A1/en
Publication of CN101291322A publication Critical patent/CN101291322A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1033—Signalling gateways
    • H04L65/104—Signalling gateways in the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]

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

Abstract

The invention discloses a method, a system and a device for differentiating sessions. Under the condition of a user terminal having a plurality of sessions, differentiating each session between a user agent network element and the user terminal is realized. The method comprises the following steps: the second equipment receives service indication information which is sent by the first equipment when session service indications are interactive, and the service indication information carries session control identification numbers associated with the sessions; the second equipment obtains the session control identification numbers from the service indication information and differentiates the sessions according to the session control identification numbers associated with the sessions. The system comprises the first equipment used to send service indication information carrying the session control identification numbers associated with the sessions when the session service indications are interactive, and the second equipment used to obtain the session control identification numbers from the service indication information sent by the first equipment and differentiate the sessions according to associations.

Description

A kind of method, system and device of differentiating sessions
Technical field
The present invention relates to the communications field, particularly relate to a kind of method, system and device of differentiating sessions.
Background technology
[background knowledge 1IMS framework]
IMS is the subsystem on the existing packet-switched domain (PS) of being superimposed upon in the mobile telephone exchange network, adopt the bearer path of packet-switched domain for its upper strata control signaling and media delivery, introduce Session Initiation Protocol as professional control protocol, utilize simple, the easy expansion of SIP, media combination characteristics easily, by business control is separated with carrying control, provide abundant multimedia service; Main functional entity comprises control user registration among the IMS, the CSCF CS territory CF of functions such as session control, the application server AS of miscellaneous service logic control function is provided, the home signature user server HSS and being used to of centralized management user contracting data realizes the MGCF MGCF/IMS media gateway IM-MGW with the circuit switching net interconnecting, the user inserts IMS by current location agent node P-CS territory CF, session and professional triggering control reach with the business control of AS and are then finished by the home domain service node S-CS territory CF of its registered place alternately, the IMS network system architecture is referring to shown in Figure 1.
Annotate: for the purpose of clear, interface between Ben Tu and unlisted all network elements.
[call intercommunication-Interworking in background knowledge 2 IMS and CS territory]
Suppose IMS user of a CS domain user's call, perhaps session is routed to the CS territory through IMS, so just needs IMS and the CS territory can intercommunication.The intercommunication in IMS and CS territory realizes by MGCF network element conversion ISUP signaling and SIP.
Whether the signaling between IMS and the CS territory can be changed depends on the ISUP signaling, whether the SIP signaling has the cell in corresponding message, this message can realize mutual mapping, and can MGCF do conversion to this mapping.
The UE in CS territory is initiated to the intercommunication schematic diagram of the several critical message of calling of IMS as caller, referring to shown in Figure 2.
[background knowledge 3 is switched based on many sessions VCC in ICS territory]
At network in the process that IMS develops, the time that one section CS territory and IMS network will occur and deposit, for the consideration that reduces the operation management cost, operator may wish to concentrate the business of deployment in the IMS territory, inserts by the CS territory or by the IMS territory to visit this business no matter be.Realize the cellular logic graph of a relation of above-mentioned requirements, referring to shown in Figure 3,
Wherein, ICCF is called IP Multimedia System circuit domain control function (IMS CS ControlFunction), finished by adaptive between the SIP signaling of IMS territory of CS domain signaling, and as a user agent, realized that the user in the business control in IMS territory and alternately.Also can seal in the access path of packet domain according to disposing ICCF.
Between UE and ICCF, can be by the control messages of some signalling paths transmission to session, this signalling path is called ICCC (IMS CS Control Channel, IP Multimedia System circuit domain control channel), according to different access network environments may be different messaging protocol, such as when only having the CS territory to connect, it can be to transmit by USSD agreement, short message and DTMF etc.; Be in as UE under the situation of the IP-CAN connection that does not have the VoIP ability, it still can be by the Session Initiation Protocol of IP-CAN transmission.
Itself eat dishes without rice or wine to carry one tunnel voice call based on the CS territory, and the consideration of aspect such as switch speed, as UE and a plurality of when all there is session in end subscriber, between ICCF and UE, only set up a CS territory carrying, and use the ICCC passage to transmit professional control messages session.
IMS is the description of 3GPP, similar IP multimedia subsystem, IMS of same existence in 3GPP2 and TISPAN; Easy among the present invention in order to describe, just be described, but clearly described method equally also is applicable to the system of 3GPP2 and TISPAN at IMS.
The inventor finds in the invention process in the prior art that solution has in the absence of a plurality of sessions at user terminal, how to distinguish the problem of each session between user agent's network element (as ICCF) and user terminal.
Summary of the invention
The embodiment of the invention provides a kind of method, system and device of differentiating sessions, has at user terminal under the situation of a plurality of sessions, realizes can distinguishing each session between user agent's network element and user terminal.
The method of a kind of differentiating sessions of the embodiment of the invention, second equipment that comprises the following steps: receive first equipment and indicate the service indication message that sends when mutual in the business of session, and this service indication message carries the session control identification number with this session association; Second equipment obtains the session control identification number from this service indication message, and according to described incidence relation differentiating sessions.
The system of a kind of differentiating sessions of the embodiment of the invention comprises: first equipment, be used for indicating when mutual in the business of session, and send the service indication message that carries with the session control identification number of this session association; Second equipment is used for obtaining the session control identification number from the service indication message that first equipment is sent, and according to described incidence relation differentiating sessions.
A kind of user terminal of the embodiment of the invention comprises: record cell, be used for when session is set up, and write down the incidence relation between this session and the session control identification number; Carry the unit, be used for and user agent's network element between carry out session business indicate when mutual, from record cell, obtain the session control identification number that has incidence relation with this session, and this session control identification number is carried in the service indication message that user agent's network element sends.
A kind of user agent's network element of the embodiment of the invention comprises: record cell, be used for when session is set up, and write down the incidence relation between this session and the session control identification number; Carry the unit, be used for and user terminal between carry out session business indicate when mutual, from record cell, obtain the session control identification number that has incidence relation with this session, and this session control identification number is carried in the service indication message that user terminal sends.
In the embodiment of the invention, second equipment receives first equipment and indicates the service indication message that sends when mutual in the business of session, and this service indication message carries the session control identification number with this session association; So second equipment obtains the session control identification number from this service indication message, but and according to described incidence relation differentiating sessions.Thereby have at user terminal under the situation of a plurality of sessions, realize to distinguish each session between user agent's network element and user terminal.
Description of drawings
Fig. 1 is existing IMS network system architecture schematic diagram;
Fig. 2 is initiated to the intercommunication schematic diagram of the several critical message of calling of IMS as caller for the UE in existing CS territory;
Fig. 3 is the existing network logic relation picture;
Fig. 4 is the method step flow chart of the embodiment of the invention;
Fig. 5 is the user terminal structural representation of the embodiment of the invention;
Fig. 6 is user agent's network element structural representation of the embodiment of the invention;
Fig. 7 is the flow chart of the embodiment of the invention 1;
Fig. 8 is the flow chart of the embodiment of the invention 2;
Fig. 9 is the flow chart of the embodiment of the invention 3;
Figure 10 is the flow chart of the embodiment of the invention 4;
Figure 11 is the flow chart of the embodiment of the invention 5;
Figure 12 is the flow chart of the embodiment of the invention 6;
Figure 13 is the flow chart of the embodiment of the invention 7;
Figure 14 is the flow chart of the embodiment of the invention 8;
Figure 15 is the flow chart of the embodiment of the invention 9;
Figure 16 is the flow chart of the embodiment of the invention 10;
Figure 17 is the flow chart of the embodiment of the invention 11;
Figure 18 is the flow chart of the embodiment of the invention 12;
Figure 19 is the flow chart of the embodiment of the invention 13;
Figure 20 is the flow chart of the embodiment of the invention 14;
Figure 21 is the flow chart of the embodiment of the invention 15;
Figure 22 is the flow chart of the embodiment of the invention 16;
Figure 23 is the flow chart of the embodiment of the invention 17;
Figure 24 is the flow chart of the embodiment of the invention 18;
Figure 25 is the flow chart of the embodiment of the invention 19;
Figure 26 is the flow chart of the embodiment of the invention 20;
Figure 27 is the flow chart of the embodiment of the invention 21;
Figure 28 is the flow chart of the embodiment of the invention 22;
Figure 29 is the flow chart of the embodiment of the invention 23;
Figure 30 is the flow chart of the embodiment of the invention 24;
Figure 31 is the flow chart of the embodiment of the invention 25;
Figure 32 is the flow chart of the embodiment of the invention 26;
Figure 33 is the flow chart of the embodiment of the invention 27;
Figure 34 is the flow chart of the embodiment of the invention 28;
Figure 35 is the flow chart of the embodiment of the invention 29;
Figure 36 is the flow chart of the embodiment of the invention 30;
Figure 37 is the flow chart of the embodiment of the invention 31.
Embodiment
In order to have at user terminal under the situation of a plurality of sessions, realize to distinguish each session between user agent's network element and user terminal.
The embodiment of the invention provides a kind of method of differentiating sessions.Referring to shown in Figure 4, comprise following key step:
S1, second equipment receive first equipment and indicate the service indication message that sends when mutual in the business of session, and this service indication message carries the session control identification number with this session association.
First equipment is user terminal in the embodiment of the invention, and second equipment is user agent's network element; Perhaps, first equipment is user agent's network element, and second equipment is user terminal.
One of can be in the following manner in sip message, carry the session control identification number:
Mode 3.1, new sip message header field of increase or parameter are carried described session control identification number;
Mode 3.2, in the SDP of sip message content, carry described session control identification number;
The existing header field or the parameter of mode 3.3, expansion sip message are carried described session control identification number.
S2, second equipment obtain the session control identification number from this service indication message, and according to described incidence relation differentiating sessions.
The embodiment of the invention also provides a kind of system of differentiating sessions, and it comprises: first equipment and second equipment.First equipment is user terminal, and second equipment is user agent's network element; Perhaps, first equipment is user agent's network element, and second equipment is user terminal.
First equipment is used for indicating when mutual in the business of session, sends the service indication message that carries with the session control identification number of this session association;
Second equipment is used for obtaining the session control identification number from the service indication message that first equipment is sent, and according to described incidence relation differentiating sessions.
The embodiment of the invention also provides a kind of user terminal, and referring to shown in Figure 5, it comprises: record cell and carry the unit; Further also can comprise: allocation units, and/or receiving element and extraction unit.
Record cell is used for when session is set up, and writes down the incidence relation between this session and the session control identification number.
Carry the unit, be used for and user agent's network element between carry out session business indicate when mutual, from record cell, obtain the session control identification number that has incidence relation with this session, and this session control identification number is carried in the service indication message that user agent's network element sends.Concrete, the business of carrying out session at IP-CAN between user terminal and the user agent's network element is indicated when mutual, this carries the unit and sends the service indication message carry with the session control identification number of this session association by sip message to user agent's network element, with expression business operation is carried out in this session.Perhaps, the business of carrying out session in circuit domain between user terminal and the user agent's network element is indicated when mutual, this carries the unit and sends the service indication message carry with the session control identification number of this session association by ICCC message to user agent's network element, with expression business operation is carried out in this session.Perhaps, the business of carrying out session in circuit domain between user terminal and the user agent's network element is indicated when mutual, this carries the session control identification number that carries to the transmission of user agent's network element the unit and is empty service indication message, is that the business of default session is indicated with expression.
Allocation units are used for when session is set up, the session control identification number of distribution and this session association, and transfer to recording unit records, and this session control identification number is sent to user agent's network element.Concrete, described user terminal is set up session at IP-CAN, is controlled identification number and is carried on by this allocation units assign sessions and notify user agent's network element in the sip message.Perhaps, described user terminal is set up session in the CS territory, is controlled identification number and is carried in the IP Multimedia System circuit domain control channel massage by this allocation units assign sessions and notify the user agent network element.Perhaps, set up session in circuit domain by the mode of Interworking between user terminal and the user agent's network element, these allocation units are respectively this session with user agent's network element and distribute identical session control identification number.
Receiving element is used to receive the message that user agent's network element is sent when session is set up.
Extraction unit is used for extracting the session control identification number from the message that receiving element is received, and transfers to recording unit records.Concrete, described user terminal is set up session at IP-CAN, is controlled identification number and is carried on by user agent's network element assign sessions and notify this user terminal in the sip message; Obtain the session control identification number by this extraction unit afterwards.Perhaps, described user terminal is set up session in the CS territory, is controlled identification number and is carried in the IP Multimedia System circuit domain control channel massage by user agent's network element assign sessions and notify this user terminal; Obtain the session control identification number by this extraction unit afterwards.
The embodiment of the invention also provides a kind of user agent's network element, can be ICCF, and referring to shown in Figure 6, it comprises: record cell and carry the unit; Further also can comprise: allocation units, and/or receiving element and extraction unit.
Record cell is used for when session is set up, and writes down the incidence relation between this session and the session control identification number.
Carry the unit, be used for and user terminal between carry out session business indicate when mutual, from record cell, obtain the session control identification number that has incidence relation with this session, and this session control identification number is carried in the service indication message that user terminal sends.Concrete, the business of carrying out session at IP-CAN between user terminal and the user agent's network element is indicated when mutual, this carries the unit and sends the service indication message carry with the session control identification number of this session association by sip message to user terminal, with expression business operation is carried out in this session.Perhaps, the business of carrying out session in circuit domain between user terminal and the user agent's network element is indicated when mutual, this carries the unit and sends the service indication message carry with the session control identification number of this session association by ICCC message to user terminal, with expression business operation is carried out in this session.Perhaps, the business of carrying out session in circuit domain between user terminal and the user agent's network element is indicated when mutual, and this carries the unit and sends the session control identification number that carries to user terminal and be empty service indication message, is business indication to default session with expression.
Allocation units are used for when session is set up, the session control identification number of distribution and this session association, and transfer to recording unit records, and this session control identification number is sent to user terminal.Concrete, described user terminal is set up session at IP-CAN, is controlled identification number and is carried on by this allocation units assign sessions and notify this user terminal in the sip message.Perhaps, described user terminal is set up session in the CS territory, is controlled identification number and is carried in the IP Multimedia System circuit domain control channel massage by this allocation units assign sessions and notify this user terminal.Perhaps, set up session in circuit domain by the mode of Interworking between user terminal and the user agent's network element, these allocation units are respectively this session with user terminal and distribute identical session control identification number.
Receiving element is used to receive the message that user terminal is sent when session is set up.
Extraction unit is used for extracting the session control identification number from the message that receiving element is received, and transfers to recording unit records.Concrete, described user terminal is set up session at IP-CAN, is controlled identification number and is carried on by the user terminal assign sessions and notify user agent's network element in the sip message; Obtain the session control identification number by this extraction unit afterwards.Perhaps, described user terminal is set up session in the CS territory, is controlled identification number and is carried in the IP Multimedia System circuit domain control channel massage by the user terminal assign sessions and notify the user agent network element; Obtain the session control identification number by this extraction unit afterwards.
Below specifically describe by 31 embodiment.
[embodiment 1] UE distributes at switching identification number transmission-DTF that IP-CAN sets up session as caller.Referring to shown in Figure 7, comprise series of steps:
Step 1-3, UE initiates a session of calling out B when IP-CAN inserts, and Invite message will be routed among the DTF according to CAMEL-Subscription-Information;
Step 4-5, it is a new calling at this moment that DTF finds, then continues to send to called B, session distributes one to switch identification number for this reason simultaneously;
Step 6 is after DTF obtains 183 of called B and replys;
Step 7-9, DTF increase the switching identification number of this session in the response message of returning to UE, and turn back to UE;
Step 10, UE preserves the switching identification number that obtains.
After session was set up, if UE will initiate to switch, switching flow can use any one among the embodiment 15-18.Following session is set up and is distributed switching identification number embodiment identical therewith, repeats no more.
Annotate:
The switching identification number that only drawn among Fig. 7 turns back to UE by 183 response messages, can also turn back to UE by other response message in the practical application, such as: 180 message, 200OK message etc.;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 2] UE is as called switching identification number transmission-DTF distribution of setting up session at IP-CAN.Referring to shown in Figure 8, comprise series of steps:
Step 1-2, DTF receive a conversation request to local terminal UE that end subscriber B is initiated;
Step 3, DTF session for this reason distributes one to switch identification number;
Step 4-6, DTF increase the switching identification number of this session in Invite message, and send to UE;
Step 7, UE preserves the switching identification number that obtains.
Annotate:
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 3] UE sets up session as caller in the CS territory switching identification number transmission-USSD is mutual earlier, and the Camel changed course--DTF distributes.Referring to shown in Figure 9, comprise series of steps:
Step 1-4, UE notifies ICCF will set up a new session by the ICCC passage, and this moment, ICCF distributed a specific control sign for this session, and returned to UE in the response message of ICCC; UE preserves this session control identification number;
Step 5-11, UE sets up flow process in the session that the CS territory is initiated to user B, calls out and is routed to ICCF by alter course this CS territory of Camel, and this moment, ICCF went out real called subscriber B according to the IDP message recovery that Camel is triggered to SCP;
Step 12-13, ICCF are converted to the Invite message send request and invite user B, and this message is triggered to DTF.
Step 14-16, DTF switches identification number for this session distributes a session, and the continuation transmission requires called subscriber B.
Step 17-19, DTF receive the response message of called subscriber B, add the switching identification number in this response message, continue to return.
Step 20-21, ICCF receive that DTF has increased the response message of switching identification number, use the ICCC message channel to carry the session control identification number simultaneously then, switch identification number and return to UE.
Step 22, UE is undertaken related by the session control identification number with preservation before, draw the correct correlating sessions that this switches identification number, and preserves this switching identification number.
Annotate:
When having set up the carrying of CS territory between UE and the ICCF, step 5-11 can omit;
The switching identification number that only drawn among Fig. 9 turns back to ICCF by 183 response messages, can also turn back to UE by other response message in the practical application, such as: 180 message, 200OK message etc.;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
SCP among Fig. 9 and ICCF can be deployed in the same physical entity, also can separately dispose.When being deployed in together, by the internal interface interactive information; When separately disposing, can pass through existing protocol and privately owned interactive interfacing information such as CAP, MAP, SIP.SCP among all the other embodiment and ICCF relation are identical, hereinafter no longer describe.
After just UE and ICCF having been preserved the incidence relation of session control identification number and session in the present embodiment, the session control identification number with the expression switching identification number that DTF was distributed and which session is associated follow-up ICCF by carrying in the ICCC notice.In practice, between UE and ICCF, can also distinguish concurrent a plurality of session, and use ICCC message that message informing and professional control are carried out in each session by the session control identification number, specifically see also the step 27-31 of embodiment 19.
The session control identification number that is distributed in all the other embodiment also has similar effect, hereinafter repeats no more.
The distribution of the session control identification number of describing in this example, transmission and follow-up use can independently be carried out, and are not distributed the influence of switching identification number, and subsequent embodiment is similar.
[embodiment 4] UE sets up session as caller in the CS territory switching identification number transmission-parallel PSI--DTF distributes.Referring to shown in Figure 10, comprise series of steps:
Step 1-4, UE are initiated to the CS territory carrying of ICCF and set up flow process in the CS territory;
Step 5-8, the session that UE notifies ICCF will be established to called subscriber B by the ICCC passage, this moment, ICCF distributed a specific control sign for this session, and returned to UE in the response message of ICCC; UE preserves this session control identification number;
Step 9-11, ICCF obtain real called subscriber B from the notice of ICCC, and are converted to Invite message send request invitation user B, and this message is triggered to DTF;
Step 12-14, DTF switches identification number for this session distributes a session, and the continuation transmission requires called subscriber B;
Step 15-17, DTF receive the response message of called subscriber B, add the switching identification number in this response message, continue to return;
Step 18-19, ICCF receive that DTF has increased the response message of switching identification number, use the ICCC message channel to carry the session control identification number simultaneously then, switch identification number and return to UE;
Step 20, UE is undertaken related by the session control identification number with preservation before, draw the correct correlating sessions that this switches identification number, and preserves this switching identification number.
Annotate:
When having set up the carrying of CS territory between UE and the ICCF, step 1-4 can omit;
The switching identification number that only drawn among Figure 10 turns back to ICCF by 183 response messages, can also turn back to UE by other response message in the practical application, such as: 180 message, 200OK message etc.;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 5] UE sets up session as caller in the CS territory switching identification number transmission-pure Interworking--DTF distributes.Referring to shown in Figure 11, comprise series of steps:
Step 1-7, UE sets up flow process in the session that the CS territory is initiated to user B, calls out and is routed to ICCF by alter course this CS territory of Camel, and this moment, ICCF went out real called subscriber B according to the IDP message recovery that Camel is triggered to SCP; The particular session control identification number (such as being fixed as 1) that adopts both sides to arrange in advance between UE and the ICCF identifies the session that this sets up by Interworking.
Step 8-9, ICCF are converted to the Invite message send request and invite user B, and this message is triggered to DTF;
Step 10-12, DTF switches identification number for this session distributes a session, and the continuation transmission requires called subscriber B;
Step 13-15, DTF receive the response message of called subscriber B, add the switching identification number in this response message, continue to return;
Step 16-17, ICCF receive that DTF has increased the response message of switching identification number, use the ICCC message channel to carry special fixedly session control identification number (such as being fixed as 1) then, switch identification number and return to UE;
Step 18, UE is by after obtaining this ICCF message, according to fixing session control identification number always and the CS territory session of setting up be associated, thereby obtain switching the incidence relation of identification number and session and preserving.
Annotate:
Described particular session control identification number can be fixed as certain ICCF and the consensus value of UE, also can omit in ICCC message; Simultaneously, for fear of obscuring, during Interworking sets up session, ICCF will refuse new session;
The switching identification number that only drawn among Figure 11 turns back to ICCF by 183 response messages, can also turn back to UE by other response message in the practical application, such as: 180 message, 200OK message etc.;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 6] UE distributes as the called switching identification number transmission-DTF that sets up session in the CS territory.Referring to shown in Figure 12, comprise series of steps:
Step 1-2, DTF receive a conversation request to local terminal UE that end subscriber B is initiated;
Step 3, DTF session for this reason distributes one to switch identification number;
Step 4, DTF increases the switching identification number of this session in Invite message;
Step 5, Invite message is routed to ICCF;
Step 6-7, ICCF newly sets up session by ICCC passage notice UE, and carries session control identification number, switching identification number;
Step 8, UE preserves the session control identification number of this session correspondence;
Step 9, UE preserves the switching identification number of this session correspondence;
Annotate:
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 7] UE distributes at switching identification number transmission-UE that IP-CAN sets up session as caller.Referring to shown in Figure 13, comprise series of steps:
Step 1-4, UE is when IP-CAN inserts, and the user need initiate a session of calling out B, and this moment, UE distributed one to switch identification number for this session, and sent by carrying the switching identification number in the Invite message;
Step 5-6, this session request of setting up is routed to DTF, and DTF finds this new calling constantly, then preserve and switch identification number, and this identification information of deletion continues to send to user B from Invite message.
Annotate:
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 8] UE distributes as the called switching identification number transmission-UE that sets up session in the IP-CAN territory.Referring to shown in Figure 14, comprise series of steps:
Step 1-5, DTF receive a conversation request to local terminal UE that end subscriber B is initiated, and continue to be routed to UE;
Step 6, UE session for this reason distributes one to switch identification number;
Step 7-9, UE increase the switching identification number of this session in the response message of SIP, and send to DTF;
Step 10-11, DTF preserves the switching identification number that obtains, and identification number information is switched in deletion from response message, continues to turn back to user B.
Annotate:
The switching identification number that only drawn among the figure turns back to UE by 183 response messages, can also turn back to UE by other response message in the practical application, such as: 180 message, 200OK message etc.;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 9] UE sets up session as caller in the CS territory switching identification number transmission-UE distributes.Referring to shown in Figure 15, comprise series of steps:
Step 1-2, UE is when the CS territory is inserted, and the user need initiate a session of calling out B, and this moment, UE distributed one to switch identification number for this session, and carried the switching identification number send in call setup request message.According to the mode of setting up session, UE can switch identification number with session by number of ways and be delivered to ICCF, and embodiment 11-14 has listed several possible modes.
Step 3-4, the ICCF in routed path receives this call request, carries out conversion as required, to guarantee that carrying this switching identification number in sip message sends to DTF;
Step 5-6, this session request of setting up is routed to DTF, and DTF finds this new calling constantly, then preserve and switch identification number, and this identification information of deletion continues to send to user B from Invite message.
Annotate:
UE carries and switches identification number to notify the mode of ICCF can be ICCC message, also can be carried to ICCF by UUI;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 10] UE distributes as the called switching identification number transmission-UE that sets up session in the CS territory.Referring to shown in Figure 16, comprise series of steps:
Step 1-5, DTF receive a conversation request to local terminal UE that end subscriber B is initiated, and continue to be routed to UE through ICCF;
Step 6, UE session for this reason distributes one to switch identification number;
Step 7, UE increases the switching identification number of this session in the response message of ICCC, and sends to ICCF;
Step 8-11, if this session needs to set up simultaneously the carrying of CS territory between ICCF and UE, UE returns Alerting and replys in the process of setting up carrying;
Step 12 after ICCF obtains replying of UE, increases in 180 message and switches identification number, continues to return to user B;
Step 13-15, this response message is routed to DTF, and DTF preserves the switching identification number that obtains, and identification number information is switched in deletion from response message, continues to turn back to user B.
Annotate:
If do not need to set up the carrying of CS territory, step 8-11 can omit, and switches identification number and directly returns in the ICCC response message;
The switching identification number that only drawn among the figure returns by 180 response messages, can also turn back to UE by other response message in the practical application, such as: 200OK message etc.;
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.
[embodiment 11] UE transmits and switches identification number to the ICCF-ICCC mode.Referring to shown in Figure 17, comprise series of steps:
Step 1:UE carries session switching identification number by the ICCC passage and notifies ICCF;
Step 2-4:ICCF obtains switching identification number by this ICCC message; If this ICCC message is and an existing session association that ICCF also needs the session control identification number from this ICCC message to obtain correct session; Use the interior sip message of this session to carry the switching identification number then and notify DTF.
Present embodiment can apply to the step 2 among the embodiment 9.
[embodiment 12] UE transmits and switches the IDP triggering mode of identification number to ICCF-UUI.Referring to shown in Figure 180, comprise series of steps:
Step 1:UE carries the UUI cell in the SETUP of initiation session message, the UUI content is that identification number is switched in session;
Step 2:MSC triggers the Camel IN service, notifies ICCF by IDP message through SCP;
Step 3-6:ICCF notice MSC is rerouted to the PSI number of ICCF, and follow-up mode by CS territory and the intercommunication of IMS call setup is routed to ICCF;
Step 7-9, ICCF be by the switching identification number in the IDP message that has write down, is converted to sip message and carries and switch identification number and notify DTF;
Present embodiment can apply to the step 2 among the embodiment 9.
Present embodiment can apply to be used among the embodiment 17 transmit switching identification number (step 1-7).
Switch to the session control identification number switching identification number, present embodiment also can be applied to transmit the session control identification number between UE and ICCF.
[embodiment 13] UE transmits and switches the MGCF conversion regime of identification number to ICCF-UUI.Referring to shown in Figure 19, comprise series of steps:
Step 1-2:UE carries the UUI cell in the SETUP of initiation session message, the UUI content is that identification number is switched in session; Be forwarded to MGCF through behind the MSC;
Step 3:MGCF changes this isup message that carries UUI message to sip message;
Step 4-6: this sip message is routed to ICCF, ICCF judges that the UUI content that this sip message carries is the conversion identification number, notify DTF so be converted to use other header field sip messages to carry to switch identification number, perhaps keep UUI and carry and switch identification number and notify DTF.
Present embodiment can apply to the step 2 among the embodiment 9.
Present embodiment can apply to be used among the embodiment 17 transmit switching identification number (step 1-7).
Switch to the session control identification number switching identification number, present embodiment also can be applied to transmit the session control identification number between UE and ICCF.
[embodiment 14] UE transmits and switches the MGCF conversion regime of identification number to the ICCF-subaddressing.Referring to shown in Figure 20, comprise series of steps:
Step 1-2:UE carries the subaddressing in the SETUP of initiation session message, the subaddressing number is that identification number is switched in session; Be forwarded to MGCF through behind the MSC;
Step 3:MGCF changes this isup message that carries the subaddressing number to sip message;
Step 4-6: this sip message is routed to ICCF, is forwarded to DTF.
Present embodiment can apply to the step 2 among the embodiment 9.
Present embodiment can apply to be used among the embodiment 17 transmit switching identification number (step 1-7).
Switch to the session control identification number switching identification number, present embodiment also can be applied to transmit the session control identification number between UE and ICCF.
[embodiment 15] UE initiates to carry switching identification number-USSD of session from many sessions that IP-CAN switches to the CS territory are switched mutual earlier.Referring to shown in Figure 21, comprise series of steps:
Step 1-4, UE notifies ICCF will set up a new session by the ICCC passage, carries the switching identification number of session simultaneously, and this moment, ICCF distributed a specific control sign for this session, and returned to UE in the response message of ICCC; UE preserves this session control identification number;
Step 5-11, UE are initiated to the session of the VDN number of DTF and set up flow process in the CS territory, call out and be routed to ICCF by alter course this CS territory of Camel, and the IDP message recovery that this moment, ICCF was triggered to SCP according to Camel goes out real called;
Step 12-13, ICCF are converted to the Invite message send request to DTF, and carry the switching identification number that UE sends over;
Step 14, DTF is the VDN number of self by the purpose of Invite message, and the switching identification number that carries, judging is handoff request to an already-existing session leg;
Step 15, this moment, DTF can upgrade access leg information, and initiated and to the media negotiation of end subscriber;
Step 16, DTF discharges old IP-CAN access leg.
Annotate:
When having set up the carrying of CS territory between UE and the ICCF, step 5-11 can omit.
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as the Replace header field), also can carry by the SDP message content of text formatting.
[embodiment 16] UE initiates to carry the switching identification number-PSI of session from many sessions that IP-CAN switches to the CS territory are switched parallel.Referring to shown in Figure 22, comprise series of steps:
Step 1-4, UE are initiated to the CS territory carrying of ICCF and set up flow process in the CS territory;
Step 5-8, UE notifies the session of the VDN number that ICCF will be established to DTF by the ICCC passage, and this moment, ICCF identified for this session distributes a specific control, and returned to UE in the response message of ICCC; UE preserves this session control identification number;
Step 9-11, ICCF obtain real called VDN number from the notice of ICCC, and are converted to Invite message and carry and switch identification number and send to DTF;
Step 12, DTF is the VDN number of self by the purpose of Invite message, and the switching identification number that carries, judging is handoff request to an already-existing session leg;
Step 13, this moment, DTF can upgrade access leg information, and initiated and to the media negotiation of end subscriber;
Step 14, DTF discharges old IP-CAN access leg.
Annotate:
When having set up the carrying of CS territory between UE and the ICCF, step 1-4 can omit.
Switching identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as the Replace header field), also can carry by the SDP message content of text formatting.
[embodiment 17] UE initiates to carry the switching identification number-Interworking of session from many sessions that IP-CAN switches to the CS territory are switched.Referring to shown in Figure 23, comprise series of steps:
Step 1, UE is initiated to the calling of the VDN number of DTF in the CS territory, and carries the switching identification number by the UUI cell of Setup message;
Step 2-7, this calling triggers by Camel on MSC and this CS territory calling that alters course is routed to ICCF, and this moment, ICCF went out real called VDN number according to the SCPIDP message recovery that is triggered to of Camel, and the switching identification number that carries among the UUI;
Step 8-9, ICCF are converted to Invite message and carry the switching identification number and send to DTF;
Step 10, DTF is the VDN number of self by the purpose of Invite message, and the switching identification number that carries, judging is handoff request to an already-existing session leg;
Step 11, this moment, DTF can upgrade access leg information, and initiated and to the media negotiation of end subscriber;
Step 12, DTF discharges old IP-CAN access leg.
Annotate:
Switch identification number can by a sip message of redetermination or parameter carry (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as the Replace header field), also can carry by the SDP message content of text formatting.
Only provided among the embodiment by UUI and carried the implementation of switching identification number and being triggered to ICCF, can use any one implementation that discloses among the embodiment 12-14 in the practice by IDP.
The many sessions that [embodiment 18] switch to IP-CAN from the CS territory are switched carrying of identification number switching.Referring to shown in Figure 24, comprise series of steps:
Step 1-3, UE initiate a VDI number of calling out DTF in the IP-CAN territory, and carry the switching identification number, and Invite message will be routed among the DTF according to CAMEL-Subscription-Information;
Step 4, DTF is the VDI number of self by the purpose of Invite message, and the switching identification number that carries, judging is handoff request to an already-existing session leg;
Step 5, this moment, DTF can upgrade access leg information, and initiated and to the media negotiation of end subscriber;
Step 6, DTF discharges old CS territory access leg.
Annotate:
Switch identification number can by a sip message of redetermination or parameter carry (such as header field DT-ID of redetermination, perhaps increase a parameter Transfer-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as the Replace header field), also can carry by the SDP message content of text formatting.
Switch from many sessions that IP-CAN switches to the CS territory [embodiment 19], and ICCF is to the processing of media port.
When UE a plurality of sessions when IP-CAN switches to the CS territory owing to only set up the carrying of one road CS territory between UE and the ICCF, be carried to a plurality of to the medium connectivity problem between the end subscriber so must solve this CS territory.Present embodiment is mainly described the processing procedure of ICCF to medium, switches start flow and can use in the foregoing description any one.
UE-A has set up two sessions with UE-B and UE-C in the IP-CAN territory, session A-B is in state of activation, and session A-C is in held state; Referring to shown in Figure 25, comprise series of steps:
Step 1-4, UE initiate first session handoff request in the CS territory, carry the switching identification number of session A-B, owing to also there is not the carrying of CS territory, UE initiates the foundation of CS territory carrying simultaneously, and this handoff request is routed to ICCF earlier;
Step 5, ICCF carries the MGW media information in the loading establishing process of CS territory, and switches identification number, sends to DTF by Invite message;
Step 6-13, to discern this handoff request be that the session leg of session A-B switches to DTF according to switching identification number, so initiate and the media consultation process of user B, sets up the session leg of the back release IP-CAN that finishes at CS territory access leg;
At this moment, the medium of session A-B connect by the carrying of CS territory and are in state of activation, and the medium of session A-C still connect by IP-CAN, and are in hold mode;
Step 14, UE initiates second handoff request in the CS territory, carry the switching identification number of session A-C, and indicating this session simultaneously is the HOLD state;
After step 15-17, ICCF receive this session handoff request, because there has been a session in the CS territory, can not directly uses the port of MGW directly to set up medium with UE-C and be connected, be that the each side of session applies for port so ICCF this moment need arrive that MRS goes up;
Step 18, ICCF carries the media port information of distributing for UE-C and specifies medium property is Inactive, and switches identification number, sends to DTF by Invite message;
Step 19-26, to discern this handoff request be that the session leg of session A-C switches to DTF according to switching identification number, so initiate and the media consultation process of user C, sets up the session leg of the back release IP-CAN that finishes at CS territory access leg;
At this moment, the medium of session A-B connect by the carrying of CS territory and are in state of activation, in the medium of session A-C, have only UE-C to be connected with MRS, and are in hold mode;
Step 27-31, follow-up UE needs and user C conversation, and and the conversation of user B temporarily keep, so HOLD asks ICCF by ICCC initiation session supplementary service control, carried the session control identification number of session A-B in this control request and required calling to keep, and the session control identification number of session A-C also requires to activate; After ICCF receives this message, the media redirection of MGW to MRS, and is rerouted to the Media Stream of UE-B MRS and is revised as non-activated state, and UE-C medium activated to MRS, and be communicated with the port that links to each other with MGW and UE-C among the MRS.
At this moment, the medium of session A-C by CS territory carrying, MRS connects and be in state of activation, in the medium of session A-B, have only UE-B to be connected, and be in hold mode with MRS.
Annotate:
UE initiates handoff request and is not limited to mode among the figure in the CS territory, can adopt disclosed in the foregoing description any one to set up mode;
Step 15-17 can be with parallel the carrying out of random order;
MRS among the figure can be the MRFP by MRFC control, also can be the MGW by MGCF control; When the MRS among the figure was MGW, being connected of MGW and MRS was inner the connection in the above-mentioned flow process, and step can be omitted;
The port of applying in MRS described in the figure can be that independently port also can be the port that is connected to same audio mixing resource, when being that the process of connectivity port P-C and P-M can be omitted when being connected to the port of same audio mixing resource.
ICCF has been described under a plurality of sessions switch to CS from IP-CAN the situation to the processing of media port in this example; Had session for the CS territory, follow-up have session suitable equally from the situation that IP-CAN switches to CS again.
[embodiment 20] switch to many sessions switchings of IP-CAN from the CS territory, ICCF is to the processing of media port.
UE-A has set up two sessions with UE-B and UE-C in the CS territory, session A-B is in state of activation, and session A-C is in held state; Referring to shown in Figure 26, comprise series of steps:
Step 1, UE initiates first session handoff request at IP-CAN, carries the switching identification number of session A-B;
Step 2-6, to discern this handoff request be that the session leg of session A-B switches to DTF according to switching identification number, so initiate and the media consultation process of user B, sets up the session leg that the back that finishes sends Bye message release CS territory at the IP-CAN access leg;
Step 7-8 after this moment, ICCF received Bye message, discharges among the CS original session A-B in territory user B to the port P-B of MRS, and carries session control identification number A-B by the ICCC passage and notify UE-A, and session A-B is released;
At this moment, the medium of session A-B are set up end-to-end connection and are in state of activation by the IP-CAN carrying, and the medium of session A-C still connect by carrying of CS territory and MRS, and are in hold mode;
Step 9, UE initiates second session handoff request at IP-CAN, carries the switching identification number of session A-C, and indication is in the Inactive state in the medium that UE provides;
Step 10-14, to discern this handoff request be that the session leg of session A-C switches to DTF according to switching identification number, so initiate and the media consultation process of user C, sets up the session leg that the back that finishes sends Bye message release CS territory at the IP-CAN access leg;
Step 15-19, after this moment, ICCF received Bye message, user C was to the port P-C of MRS among the release CS original session A-C in territory; And after judging that no longer there is session in the CS territory, discharge MRS and go up the port P-M that is connected with MGW, and send Bye message to MGCF; MGCF initiates the dismounting of medium after receiving Bye message, and is converted to the circuit domain initiation session dismounting of isup message to UE-A;
At this moment, the medium of session A-B are set up end-to-end connection and are in state of activation by the IP-CAN carrying, and the medium of session A-C are set up end-to-end connection and are in unactivated state by the IP-CAN carrying, and the bearing resource in CS territory all discharges and finishes.
[embodiment 21] set up session in the PS territory, and the session control identification number is distributed by ICCF, and the flow process of Calling Side comprises the following steps: referring to shown in Figure 27
Step 1-2:UE is initiated to the session of B and sets up SIP Invite request in the PS territory, this request is routed to ICCF;
Step 3:ICCF distributes a corresponding session control identification number for this session, and preserves;
Step 4-5:ICCF continues to send this session foundation asks called B;
Step 6-7: the response message of called B (such as SIP 183) turns back to ICCF;
Step 8-9:ICCF for this session distribution the session control identification number in adding response message to, turn back to the UE of above-mentioned initiation session
Step 10:UE preserves the session control identification number of session correspondence, so that this session control identification number of follow-up use is discerned and controlled session.
Annotate:
ICCF waits until the UE that just adds the session control identification number after the called B end echo reply message in this message and return to initiation session in this example, all the other methods that can adopt comprise that also ICCF just returns to UE by INFO or other sip messages immediately after assign sessions control sign, also can wait follow-up 181 just to return to UE in other response messages.
The session control identification number can carry by the header field or the parameter of a sip message of redetermination (such as header field SC-ID of redetermination, perhaps increase a parameter S Ctrl-ID newly) for header field To, also can use original header field or parameter to expand and carry (such as User-Agent or Server header field), also can carry by the SDP message content of text formatting.The transfer mode of subsequent embodiment is similar.
The session control identification number that ICCF distributed, can be different from the Call-ID in the SIP conversation message and can directly use in the SIP conversation message Call-ID or from its derivation.
[embodiment 22] set up session in the PS territory, and the session control identification number is distributed by ICCF, and the flow process of callee side comprises the following steps: referring to shown in Figure 28
Step 1-2: remote subscriber B initiates a session of pointing to the contracted user, and this request (SIP Invite) is routed to the ICCF of contracted user's correspondence;
Step 3:ICCF distributes a corresponding session control identification number for this session, and preserves;
The SIP Invite that step 4-5:ICCF continues this session foundation of transmission asks contracted user's UE, and carries the session control identification number;
Step 6:UE preserves the session control identification number of session correspondence, so that this session control identification number of follow-up use is discerned and controlled session.
The distribution and the transmission of [embodiment 23] session control identification number, the PS territory, UE distributes, and the flow process of Calling Side comprises the following steps: referring to shown in Figure 29
Step 1:UE prepares to initiate a session, and session distributes a session control identification number for this reason in advance;
Step 2-3:UE is initiated to a session and sets up SIP Invite request in the PS territory, and carries the session control identification number, and this request is routed to ICCF;
Step 4:ICCF preserves the session control identification number of session correspondence, so that this session control identification number of follow-up use is discerned and controlled session.
The distribution and the transmission of [embodiment 24] session control identification number, the PS territory, UE distributes, and the flow process of callee side comprises the following steps: referring to shown in Figure 30
Step 1-4: remote subscriber B initiates a session of pointing to the contracted user, and this request (SIP Invite) is routed to the ICCF of contracted user's correspondence, and ICCF continues to send to contracted user's UE;
Step 5: described UE distributes a corresponding session control identification number for this session, and preserves;
Step 6-7: described UE carries the session control identification number in response message, turn back to ICCF;
Step 8:ICCF preserves the session control identification number of session correspondence, so that this session control identification number of follow-up use is discerned and controlled session.
The distribution and the transmission of [embodiment 25] session control identification number, the CS territory, UE distributes, and the flow process of Calling Side comprises the following steps: referring to shown in Figure 31
Step 1:UE prepares to initiate a session, and session distributes a session control identification number for this reason in advance;
Step 2:UE is initiated to a session in the CS territory by the ICCC passage and sets up request, and carries the session control identification number, and this request is routed to ICCF;
Step 3:ICCF preserves the session control identification number of session correspondence, so that this session control identification number of follow-up use is discerned and controlled session.
Step 4:, then will set up the CS carrying this moment between UE and the ICCF if also do not set up the CS carrying between UE and the ICCF.The mode of CS carrying can be with reference to using any one mode that discloses among the embodiment of front.If set up the CS carrying between UE and the ICCF, then this step can omit.
Step 5:ICCF continues to send SIP Invite message and sets up session to the opposite end request.
The distribution and the transmission of [embodiment 26] session control identification number, the CS territory, UE distributes, and the flow process of callee side comprises the following steps: referring to shown in Figure 32
Step 1: remote subscriber B initiates a session of pointing to the contracted user, and this request (SIP Invite) is routed to the ICCF of contracted user's correspondence;
Step 2:ICCF sends to the session request of setting up by the ICCC passage contracted user's UE;
Step 3:, then will set up the CS carrying this moment between UE and the ICCF if also do not set up the CS carrying between UE and the ICCF.The mode of CS carrying can be with reference to using any one mode that discloses among the embodiment of front.If set up the CS carrying between UE and the ICCF, then this step can omit.
Step 4: described UE distributes a corresponding session control identification number for this session, and preserves;
Step 5: described UE carries the session control identification number in the response message of ICCC passage, turn back to ICCF;
Step 6:ICCF preserves the session control identification number of session correspondence, so that this session control identification number of follow-up use is discerned and controlled session.
[embodiment 27] session control identification number assignment and use contains default designation number.Referring to shown in Figure 33, comprise the following steps:
UE does not control identification number and notifies UE for the session assign sessions if obtain ICCF in advance through configuration or other means, and then UE uses with ICCF and goes up the default session control identification number of the identical null value (perhaps other default values) of configuration as this session.
Step 1, ICCF receives a conversation request to local terminal UE-A that end subscriber B is initiated;
Step 2, VCC AS is based on judging that UE-A does not have session or other results of decision at this moment, session does not distribute an explicit session control identification number for this reason, and is to use the session control identification number of default null value as this session.This default session control identification number need not be notified UE.
Step 3, ICCF is issued to UE to call request.According to territory selection result and strategy, this call request may be that mode or the USSD alternant way by Interworking issues in the CS territory, perhaps issues by SIP Invite message in the PS territory.Need not comprise in this setup requests this session default session control identification number (can not carry the parameter of sign session control identification number in the message, but or the value of carrying the parameter parameter for empty).
Step 4, UE-A receives a new session foundation request, and this moment, ICCF did not give this session assign sessions control identification number, so UE-A similarly uses the session control identification number of default null value as this session.
Step 5, UE-A finishes the process of setting up of carrying and session by input field and ICCF etc. and Remote-B;
Set up a session between UE-A and the Remote-B this moment.
Step 6, ICCF receives the conversation request to local terminal UE-A that another one is initiated end subscriber Remote-C;
Step 7, ICCF session for this reason distributes a session control identification number CID1;
Step 8, ICCF notifies UE-A newly to set up a session, and the session control identification number CID1 of this session correspondence; According to territory selection result and strategy, this message may be to issue by the mode of USSD or other ICCC message in the CS territory; Perhaps issue by SIP Invite message in the PS territory.
Step 9, receive the assign sessions control identification number notice of ICCF after, UE-A preserves session control identification number CID1.
Step 10 and since UE-A go up ability restriction (such as have only a microphone and receiver can only be simultaneously and a side talk), the UE-A decision earlier originally and the session of Remote-B foundation call out the calling that Remote-C is just answered in maintenance then.This moment, UE-A sent the business operation request of a Hold to ICCF, do not carry the session control identification number in this request and (can not carry the parameter of sign session control identification number in the message, or but the value of carrying the parameter parameter is sky), be that default session is controlled with expression.This request message can also can send by the ICCC message in CS territory by sending with sip message by the PS territory.
Step 11 after ICCF receives the business operation request of UE-A, is mated session according to entrained session control identification number.The situation of this moment is not carry the session control identification number in the request of Hold business operation, so ICCF knows default session is operated, just session between UE-A and the Remote-B;
Step 12, ICCF changes the calling that SIP orders and professional AS, UE-A and Remote-B etc. finish jointly to session between UE-A and the Remote-B as required and keeps.
Step 13, the session between the Remote-B called out maintenance after, the UE-A decision is connected and the new session of Remote-C, so to one of the ICCF response that continues, comprised in this response and Remote-C between the session control identification number CID1 that is associated of session.This response that continues is selected according to the channel that issues of step 8, may be the response of passing through the mode of USSD or other ICCC message in the CS territory; Perhaps pass through the response of message such as SIP 180 in the PS territory.
Step 14, the process of setting up of UE-A and Remote-C new session.
Annotate:
The order of setting up two sessions in this example can be walk abreast or carry out with random order.
Present embodiment has just been described the situation for session assign sessions control identification number that ICCF shows, but suitable equally for the situation of UE distribution.
[embodiment 28] ICCC control channel is controlled the use of sign after changing.Referring to shown in Figure 34, comprise the following steps:
Step 1:UE-A is in the wireless access environment that 2G GRPS and CS can both cover, and this moment, UE-A used one of them session that 2G GPRS sets up as the UE-B of ICCC passage and opposite end, and assign sessions control identification number is A-B.Session foundation, session control identification number assignment process and loading establishing process can use any one mode that discloses among the embodiment of front, omit here.
Step 2: because the wireless access environment of UE-A changes, 2G GPRS is unavailable, cover but CS this moment is still normal, so switch between UE-A and the ICCF use circuit domain USSD message as the ICCC passage.
Step 3: the user determine temporary transient Hold to live and far-end UE-B between session, this moment, UE-A sent the request of HOLD business operation by the ICCC passage of the USSD message after switching, and carried the session control identification number A-B corresponding with this session
After step 4:ICCF received this request message, obtaining by the session control identification number A-B in the message was that business control is carried out in which session, so the HOLD Business Processing between initiation and the far-end UE-B is mutual, finishes the HOLD request.
The use of [embodiment 29] session control identification number.Referring to shown in Figure 35, comprise the following steps:
Contracted user's UE-A sets up session with two remote subscriber UE-B and UE-C, and the session control identification number that distributes for respective session between UE-A and ICCF is respectively A-B and A-C;
Step 1:UE-A sets up the meeting meeting-place, because the meeting-place also is equivalent to a session for UE-A, so same also distribute session control identification number a: A-D between ICCF and UE-A for this reason;
Step 2:UE-A wants session A-B is added in the meeting-place, invites the user to add the request of meeting and carry session control identification number A-B so pass through the transmission of ICCC passage;
Step 3: after this request was routed to ICCF, ICCF invited the UE-B of remote subscriber to add meeting according to the session control identification number in the request by the Refer message that sends in the respective session A-B;
Step 4-5: after adding the meeting-place success, remote subscriber UE-B returns the notice (SIPNOTIFY message) that adds the meeting-place success; ICCF carries session control identification number A-B by the ICCC path message, and notice UE-A the other side has successfully added the meeting-place;
Step 6-7:UE-A initiates to discharge the release of original session A-B after obtaining notice that the other side successfully adds the meeting-place; ICCF sends SIP Bye message to the opposite end according to the session control identification number in the request in respective session A-B.
Step 8-13: invite the UE-C of remote subscriber to add the meeting-place by the similar method of step 2-7.The step of these steps and invitation user UE-B can be with random order or parallel carrying out.
Annotate: set up session A-B in this example, A-C inserts also can setting up in the PS territory of setting up in the CS territory.
When CS territory and PS can insert, can be only be assigned as the session control identification number and finish the identification and the control of session at the CS input field, also can all control identification number and finish the identification and the control of session at CS territory and PS for the session assign sessions.
To set up the meeting-place can be to set up meeting-place by direct transmission SIP Invite to existing methods such as Conf AS in the PS territory to UE-A in this example; Also can be to transmit a request to ICCF by the ICCC passage earlier, set up the meeting-place by ICCF by existing method then in the CS territory.
Described UE-A in this example and the already-existing session user added the meeting-place by the ICCC channel request, in addition can also by directly send in the PS territory SIP Refer message to meeting-place server or opposite end etc. existing method invite the user to add the meeting-place.
Having described ICCF in this example has successfully added replying of meeting-place by the ICCC passage with the opposite end and has returned to UE-A, in addition can also be by directly returning SIP NOTIFY to the UE-A advise fate in the PS territory, and other existing SIP advice methods, such as sending NOTIFY/Message etc.
This example is that example has illustrated that how passing through the session control identification number controls business with the meeting, and all the other keep, activate as calling out switching, calling out, or the like business also can take similar mode to realize at an easy rate, in this explanation no longer one by one.
Related-IMRN the association of [embodiment 30] Bearer and session control identification number.Referring to shown in Figure 36, comprise the following steps:
Step 1:UE-A sets up session by the ICCC channel request, and this message is passed to ICCF;
Step 2:ICCF session assign sessions for this reason control identification number, and distribute an IMRN number that points to ICCF itself, and set up the corresponding relation of this session control identification number and IMRN number;
Step 3:ICCF controls identification number with session, and IMRN returns UE-A by the ICCC passage;
Step 4-5:UE-A preserves the session control identification number of session correspondence, and uses the IMRN that is distributed to initiate the SETUP call request as called number in the CS territory, sets up the CS carrying;
Step 6: because IMRN is the called number that points to ICCF, so the foundation request of this CS carrying is routed ICCF, ICCF learns that by this IMRN this CS carrying is exactly that the pairing carrying of request is set up in session before; After obtaining this corresponding relation, ICCF can and use the media information of this carrying carry out and operation such as opposite end negotiation in the control of follow-up business at call establishment.
Annotate: if do not need many sessions are controlled, then assign sessions control identification number can omit in the step.
Related-caller ID the association of [embodiment 31] Bearer and session control identification number.Referring to shown in Figure 37, comprise the following steps:
Step 1:UE-A sets up session by the ICCC channel request, carries the calling identification of UE-A in this message, and this message is passed to ICCF;
Step 2:ICCF session assign sessions for this reason control identification number, and the sign of record UE-A, and the sign of record UE-A and the corresponding relation of this session control identification number;
Step 3-4:ICCF returns the session control identification number and gives UE, and UE preserves;
Step 5:UE initiates SETUP and sets up the CS carrying in the CS territory, called can be the relatively-stationary number that points to ICCF, also can be called number and be rerouted to ICCF by network, and caller is exactly the sign of UE-A oneself.The existing embodiment in detailed process front is described.
Step 6:ICCF is by the calling identification of CS carrying and the calling identification in the ICCC conversation request, and is identical or have corresponding relation according to these two calling identifications, learns the corresponding relation of this session and carrying; After obtaining this corresponding relation, ICCF can and use the media information of this carrying carry out and operation such as opposite end negotiation in the control of follow-up business at call establishment.
Annotate: if do not need many sessions are controlled, then assign sessions control identification number can omit in the step.Calling identification described in this example can be IMSI, MSISDN, IMPU etc.
In sum, in the method for the differentiating sessions of the embodiment of the invention, because when session was set up, user terminal and user agent's network element write down the incidence relation between this session and the session control identification number; Afterwards, the business of carrying out session between user terminal and the user agent's network element is indicated when mutual, and wherein a direction the other side sends the service indication message that carries with the session control identification number of this session association; So described to can from this service indication message, obtaining the session control identification number, and according to described incidence relation differentiating sessions.Thereby have at user terminal under the situation of a plurality of sessions, realize to distinguish each session between user agent's network element and user terminal.
The embodiment of the invention also provides a kind of system, user terminal and user agent's network element of differentiating sessions, with better support the present invention.
Further, the embodiment of the invention also discloses assign sessions control identification number, transmit the multiple mode of incidence relation between session control identification number, recording conversation and the session control identification number, thereby better supported the present invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (23)

1, a kind of method of differentiating sessions is characterized in that, comprises the following steps:
Second equipment receives first equipment and indicates the service indication message that sends when mutual in the business of session, and this service indication message carries the session control identification number with this session association;
Second equipment obtains the session control identification number from this service indication message, and according to described incidence relation differentiating sessions.
2, the method for claim 1 is characterized in that, first equipment is user terminal, and second equipment is user agent's network element; Perhaps,
First equipment is user agent's network element, and second equipment is user terminal.
3, method as claimed in claim 2 is characterized in that, described user terminal is set up session at IP-CAN, is controlled identification number and is carried on by user agent's network element assign sessions and notify this user terminal in the sip message.
4, method as claimed in claim 2 is characterized in that, described user terminal is set up session in the CS territory, is controlled identification number and is carried in the IP Multimedia System circuit domain control channel massage by user agent's network element assign sessions and notify this user terminal.
5, method as claimed in claim 2 is characterized in that, described user terminal is set up session at IP-CAN, is controlled identification number and is carried on by the user terminal assign sessions and notify user agent's network element in the sip message.
6, method as claimed in claim 2 is characterized in that, described user terminal is set up session in the CS territory, is controlled identification number and is carried in the IP Multimedia System circuit domain control channel massage by the user terminal assign sessions and notify the user agent network element.
7, method as claimed in claim 2 is characterized in that, described user terminal is set up session in circuit domain as caller, by user terminal assign sessions control identification number and one of in the following manner carry the session control identification number and notify the user agent network element:
Mode 1.1, described user terminal carry the session control identification number by the UUI cell in the circuit domain message, and notify the user agent network element with the Camel triggering mode through the SCP entity when making a call;
Mode 1.2, described user terminal carry the session control identification number by the UUI cell in the circuit domain message when making a call, and are to notify the user agent network element behind the sip message by MGCF with this circuit domain message conversion;
Mode 1.3, described user terminal carry the session control identification number by called party subaddress when making a call, and notify the user agent network element after by MGCF circuit domain signaling being converted to sip message.
8, method as claimed in claim 2, it is characterized in that, set up session in circuit domain by the mode of Interworking between user terminal and the user agent's network element, described user terminal is respectively this session with described user agent's network element and distributes identical session control identification number.
9, method as claimed in claim 8 is characterized in that, during described user agent's network element and user terminal are set up the Interworking session, and the new calling of this user agent's network element refusal.
10, method as claimed in claim 2, it is characterized in that, the business of carrying out session at IP-CAN between user terminal and the user agent's network element is indicated when mutual, wherein a square tube is crossed sip message and is sent the service indication message carry with the session control identification number of this session association to the other side, with expression business operation is carried out in this session.
11, method as claimed in claim 2, it is characterized in that, the business of carrying out session in circuit domain between user terminal and the user agent's network element is indicated when mutual, wherein a square tube is crossed IP Multimedia System circuit domain control channel massage and is sent the service indication message carry with the session control identification number of this session association to the other side, with expression business operation is carried out in this session.
12, method as claimed in claim 2, it is characterized in that, the business of carrying out session in circuit domain between user terminal and the user agent's network element is indicated when mutual, wherein a direction the other side sends the session control identification number carry and is empty service indication message, is business indication to default session with expression.
13, the method described in claim 10 or 11 is characterized in that, it is one of following that described business is designated as: business operation request, business procedure notice, service processing result notice, and conversation procedure notice.
14, as claim 4 or 6 described methods, it is characterized in that, need to set up the circuit carrying between user terminal and the user agent's network element, described user agent's network element carries out related to this circuit carrying with session in the following manner:
Mode 2.1, user agent's network element are to set up the circuit carrying to distribute a routing number and write down the corresponding relation of this routing number and session, then described routing number is turned back to user terminal, user terminal with this routing number as called number, be established to the circuit carrying of user agent's network element, user agent's network element obtains the incidence relation of circuit carrying and session by this routing number;
Mode 2.2, user terminal are set up in initiation session and are carried its identification number in the message, user agent's network element writes down the corresponding relation of this identification number and session, and user terminal sets up and carries its identification number in the request message initiating the circuit carrying, and user agent's network element obtains the incidence relation of circuit carrying and session by this identification number.
15, as each described method in the claim 3 to 11, it is characterized in that, in sip message, carry one of in the following manner the session control identification number:
Mode 3.1, new sip message header field of increase or parameter are carried described session control identification number;
Mode 3.2, in the SDP of sip message content, carry described session control identification number;
The existing header field or the parameter of mode 3.3, expansion sip message are carried described session control identification number.
16, a kind of system of differentiating sessions is characterized in that, comprising:
First equipment is used for indicating when mutual in the business of session, sends the service indication message that carries with the session control identification number of this session association;
Second equipment is used for obtaining the session control identification number from the service indication message that first equipment is sent, and according to described incidence relation differentiating sessions.
17, system as claimed in claim 16 is characterized in that, first equipment is user terminal, and second equipment is user agent's network element; Perhaps,
First equipment is user agent's network element, and second equipment is user terminal.
18, a kind of user terminal is characterized in that, comprising:
Record cell is used for when session is set up, and writes down the incidence relation between this session and the session control identification number;
Carry the unit, be used for and user agent's network element between carry out session business indicate when mutual, from record cell, obtain the session control identification number that has incidence relation with this session, and this session control identification number is carried in the service indication message that user agent's network element sends.
19, user terminal as claimed in claim 18 is characterized in that, also comprises:
Allocation units are used for when session is set up, the session control identification number of distribution and this session association, and transfer to recording unit records, and this session control identification number is sent to user agent's network element.
20, user terminal as claimed in claim 18 is characterized in that, also comprises:
Receiving element is used to receive the message that user agent's network element is sent when session is set up;
Extraction unit is used for extracting the session control identification number from the message that receiving element is received, and transfers to recording unit records.
21, a kind of user agent's network element is characterized in that, comprising:
Record cell is used for when session is set up, and writes down the incidence relation between this session and the session control identification number;
Carry the unit, be used for and user terminal between carry out session business indicate when mutual, from record cell, obtain the session control identification number that has incidence relation with this session, and this session control identification number is carried in the service indication message that user terminal sends.
22, user agent's network element as claimed in claim 21 is characterized in that, also comprises:
Allocation units are used for when session is set up, the session control identification number of distribution and this session association, and transfer to recording unit records, and this session control identification number is sent to user terminal.
23, user agent's network element as claimed in claim 21 is characterized in that, also comprises:
Receiving element is used to receive the message that user terminal is sent when session is set up;
Extraction unit is used for extracting the session control identification number from the message that receiving element is received, and transfers to recording unit records.
CNA2007101296883A 2007-04-17 2007-08-17 Method, system and apparatus for differentiating sessions Pending CN101291322A (en)

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CNA2007101296883A CN101291322A (en) 2007-04-17 2007-08-17 Method, system and apparatus for differentiating sessions
PCT/CN2008/000777 WO2008125018A1 (en) 2007-04-17 2008-04-16 A method, a system and a device for distinguishing the session

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CN200710100497 2007-04-17
CN200710100497.4 2007-04-17
CNA2007101296883A CN101291322A (en) 2007-04-17 2007-08-17 Method, system and apparatus for differentiating sessions

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051721A1 (en) * 2008-11-07 2010-05-14 华为技术有限公司 Method, system and device for session association
CN102244648A (en) * 2010-05-11 2011-11-16 大唐移动通信设备有限公司 Method for transmitting session messages and apparatus
CN102571718A (en) * 2010-12-20 2012-07-11 中国移动通信集团浙江有限公司 Voice call handover method based on IMS network and handover application server
CN115065665A (en) * 2022-08-18 2022-09-16 深圳市星网信通科技有限公司 Session system, session control method thereof, and storage medium

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111713137B (en) * 2018-11-19 2021-10-15 华为技术有限公司 Method, device and system for SRVCC (Single radio Voice Call continuity) of terminal
CN110247917B (en) * 2019-06-20 2021-09-10 北京百度网讯科技有限公司 Method and apparatus for authenticating identity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051721A1 (en) * 2008-11-07 2010-05-14 华为技术有限公司 Method, system and device for session association
US8532125B2 (en) 2008-11-07 2013-09-10 Huawei Technologies Co., Ltd. Method, system and apparatus for session association
CN102244648A (en) * 2010-05-11 2011-11-16 大唐移动通信设备有限公司 Method for transmitting session messages and apparatus
CN102571718A (en) * 2010-12-20 2012-07-11 中国移动通信集团浙江有限公司 Voice call handover method based on IMS network and handover application server
CN115065665A (en) * 2022-08-18 2022-09-16 深圳市星网信通科技有限公司 Session system, session control method thereof, and storage medium

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CN100586234C (en) 2010-01-27

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