CN101771978A - Method, device and system for transferring multimedia session in access networks - Google Patents
Method, device and system for transferring multimedia session in access networks Download PDFInfo
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- CN101771978A CN101771978A CN200810242204.0A CN200810242204A CN101771978A CN 101771978 A CN101771978 A CN 101771978A CN 200810242204 A CN200810242204 A CN 200810242204A CN 101771978 A CN101771978 A CN 101771978A
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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
- H04L65/1066—Session management
- H04L65/1096—Supplementary features, e.g. call forwarding or call holding
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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
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1093—In-session procedures by adding participants; by removing participants
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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
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1094—Inter-user-equipment sessions transfer or sharing
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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
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
- H04L65/1095—Inter-network session transfer or sharing
Abstract
The invention discloses a method, a device and a system for transferring a multimedia session in access networks and relates to the technical field of mobile communication, in particular to the transferring technique in access networks. The method comprises the following steps of: receiving an access transferring request message which contains at least two dynamic session transferring identifications STI and is sent by user equipment, and processing an access transferring flow requested by the user equipment according to the at least two dynamic STI. The invention also provides corresponding user equipment, a server and a system. The invention can solve the problem of transferring in access networks by UE in the presence of at least two dynamic STI.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to the transfer techniques of access between Access Network.
Background technology
At present, mobile communications network is main with CS (Circuit-Switched, circuit switching) network, comprises GSM, CDMA etc.Each operator has set up fairly perfect and abundant business platform based on the CS network, and wherein MSC (mobile switching centre) is responsible for calling out route and service logic execution.
IMS (IP Multimedia Sub-system, IP Multimedia System) is based on the business network that IP exchanges, IMS supports that UE (mainly is IP ability Access Network-IP-CAN by various packet switching Access Networks at present, as GPRS) insert the IMS network and carry out the IMS multimedia service, be that IMS is the business platform of framework on IP-CAN, basic corresponding with the MSC of CS network.IP-CAN is relative, and the CS network provides higher bandwidth, supports abundanter business.The core of IMS is CSCF (Call Session Control Function, CSCF) and various AS (server), S-CSCF (Serving-CSCF, serving CSCF) is responsible for when satisfying condition call request being routed to correct AS, carries out service logic by AS.
Because IMS is a development trend, it is contemplated that so, and the function of CS network business platform is transferred to the IMS network, realize the unification of business platform, to reduce new business construction cost and operation cost, be rational.The unification of business platform can be called ICS (IMS Centralised Service, IMS centralized control business).
SC (Service Continuity, business continuance) research user is the conversation continuity when mobile between different access networks, promptly can change access network when the user moves and does not interrupt session.
The concrete steps that SC subscriber equipment (UE) carries out the Access Network transfer comprise: UE initiates transfer request at new access network to SCC AS, is setting up new Access Leg (access tributary) by this transfer request UE and SCC AS in new access network; After SCC AS receives transfer request, the Remote Leg (far-end branch) of the Access Leg correspondence of former access network and the Access Leg of new Access Network can be carried out relatedly, and upgrade Remote Leg, discharge the Access Leg of former access network simultaneously.So-called Remote Leg is exactly the calling control path between SCC AS and opposite end UE.Access Leg and Remote Leg have detailed definition in 3GPP TS23.237.
STI (Session Transfer Identifier, sign is shifted in session) be a sign that is used to indicate the initiation session transfer, generally when UE and SCC AS set up new Access Leg, by SCC AS dynamic assignment, each dynamic STI is corresponding one by one with a specific Access Leg.When the user will be switched, if there is dynamic STI to exist among the UE, then in transfer request, comprise dynamic STI, SCC AS can judge newly-established Access Leg needs according to STI and replace which original Access Leg.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
When UE carries out shifting at least two dynamic STI of existence between Access Network, how to realize shifting between network.
Summary of the invention
In view of this, the embodiment of the invention provides method, subscriber equipment, server and system that a kind of Multimedia session shifts between Access Network to carry out shifting between Access Network how to realize the problem that shifts between network at least when having two dynamic STI to solve UE.
For solving the problems of the technologies described above, on the one hand, the method that provides a kind of Multimedia session to shift between Access Network comprises:
Receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated;
Handle the access transfer flow of described user equipment requests at least according to described two dynamic STI.
The method that also provides a kind of Multimedia session to shift between Access Network on the other hand comprises:
Transmission comprises the access transfer request message of at least two dynamic STI;
Receive the response message of described access transfer request message and handle the flow process that described access is shifted.
The server that also provides a kind of Multimedia session to shift between Access Network on the other hand comprises:
Receiver module: be used to receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated;
Parsing module: be used to resolve described at least two the dynamic STI of described access transfer request message extraction that described receiver module receives;
Shift module: the access transfer flow that is used for handling described user equipment requests according to described at least two dynamic STI that described parsing module extracts.
The system that also provides a kind of Multimedia session between Access Network, to shift on the other hand,
Comprise server, described server is used to receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated, and handles the access transfer flow of described user equipment requests at least according to described two dynamic STI.
A kind of subscriber equipment that inserts transfer also is provided on the other hand, comprises:
Sending module: be used to send the access transfer request message that comprises at least two dynamic STI;
Processing module: be used to receive the response message of the described access transfer request message that described sending module sends and handle the flow process that described access is shifted.
The system that also provides a kind of Multimedia session between Access Network, to shift on the other hand,
Comprise subscriber equipment, described subscriber equipment is used to send the access transfer request message that comprises at least two dynamic STI, receives the response message of described access transfer request message and handles the flow process that described access is shifted.
The method that the Multimedia session that the embodiment of the invention provides shifts between Access Network, subscriber equipment, server and system have solved UE and have carried out shifting between Access Network the problem that how to realize shifting between network when having at least two dynamic STI.
Description of drawings
Fig. 1 is the method schematic diagram of the embodiment of the invention one;
Fig. 2 is the method schematic diagram of the embodiment of the invention two;
Fig. 3 is the method flow diagram of the embodiment of the invention three;
Fig. 4 is the method flow diagram of the embodiment of the invention four;
Fig. 5 is the server schematic diagram of the embodiment of the invention five;
Fig. 6 is a server schematic diagram in the system of the embodiment of the invention six;
Fig. 7 is the subscriber equipment schematic diagram of the embodiment of the invention seven;
Fig. 8 is a subscriber equipment schematic diagram in the system of the embodiment of the invention eight;
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to accompanying drawing eight embodiment that develop simultaneously, the present invention is described in more detail.
First embodiment provided by the invention is the method that a kind of Multimedia session shifts between Access Network, comprises the steps:
As shown in Figure 1, the access transfer request message that comprises at least two dynamic sessions transfer sign STI that step 101, reception subscriber equipment are initiated;
Wherein said access transfer request comprises: the voice of CS network connect transfers to the PS network, or the connection of the data between PS network transfer request, or the voice between the PS network connect transfer.
When the described access transfer request that comprises at least two dynamic transfer sign STI represented that user equipment (UE) exists voice to connect the needs transfer, also existing more than one data to connect needed to shift; Can represent that also UE exists two voice to connect and needs to shift; When can represent that also UE exists two voice to connect the needs transfer, also existing data to connect needs to shift; Can represent that also UE exists a plurality of data to connect and needs to shift.
The access transfer request message that comprises at least two dynamic sessions transfer sign STI that described reception subscriber equipment is initiated comprises: resolve described access transfer request message and extract described at least two dynamic STI;
Wherein, described at least two the dynamic STI of the described access transfer request message extraction of described parsing are specially: resolve the message header of described access transfer request message, extract the dynamic STI that described message header comprises;
And described message header is a kind of below including but not limited at least:
Replace message header, Request-URI message header or Target-Dialog message header;
And subscriber equipment is when comprising at least two dynamic STI, described at least two dynamic STI can be included in the same message header of described access transfer request message or in the different messages head;
If subscriber equipment will at least two dynamic STI when being included in the same message header of described access transfer request message, connect by special connector between each dynamic STI, for example subscriber equipment exists three dynamic STI to be respectively STI1, STI2 and STI3 when network transitions, then can in same message header, adopt special connector to connect, for example comprise STI1@STI2@STI3 at the Request-URI of described access transfer request message message header, wherein, described STI1@STI2@STI3 can also take STI1; STI2; The form of STI3 is perhaps taked the form of STI1||STI2||STI3;
If subscriber equipment will at least two dynamic STI when being included in the different messages head of described access transfer request message, for example subscriber equipment exists three dynamic STI to be respectively STI1, STI2 and STI3 when network transitions,
Then STI1 can be included in the Replace message header, STI2 is included in the Request-URI message header, and STI3 is included in the Target-Dialog message header;
Or STI1 is included in the Request-URI message header, and STI2 is included in first Replace message header, and STI3 is included in second Replace message header;
Also STI1 can be included in the Request-URI message header, STI2 is included in the Target-Dialog message header, and STI3 is included in the Target-Dialog message header;
Also STI1, STI2 and STI3 can be included in respectively in three Replace message headers of described access transfer request message, perhaps STI1, STI2 and STI3 are included in respectively in three Request-URI message headers of described access transfer request message, perhaps STI1, STI2 and STI3 are included in respectively in three Target-Dialog message headers of described access transfer request message;
Resolve the message header of described access transfer request message, extract the dynamic STI that described message header comprises and to take corresponding analysis mode to extract described at least two dynamic STI according to the mode that comprises at least two dynamic STI of subscriber equipment;
If subscriber equipment will at least two dynamic STI when being included in the same message header of described access transfer request message, connect by special connector between each dynamic STI, exist three dynamic STI to be respectively STI1, STI2 and STI3 when for example user equipment network shifts, then can adopt special connector to connect in the identical message head, for example Replace or the Target-Dialog message header in described access transfer request message comprises STI1@STI2@STI3;
This moment SCC AS (Service Centralization﹠amp; Continuity Application Server, service set and conversation continuity application server) judge whether to comprise described STI1@STI2@STI3 according to the Replace of described access transfer request message or the content of Target-Dialog message header, be then to extract STI1, STI2 and STI3 and handle if be judged as for next step 102;
If subscriber equipment will at least two dynamic STI when being included in the different messages head of described access transfer request message, for example subscriber equipment exists two dynamic STI to be respectively STI1 and STI2 when network transitions, and STI1 is included in the Replace message header, and STI2 is included in the Request-URI message header; This moment, SCC AS judged whether described access transfer request message comprises the Replace message header, was the STI1 that then extracts in the described Replace message header if be judged as; Content according to the Request-URI message header of described access transfer request message judges whether to comprise described STI2, is then to extract described STI2 if be judged as.
Subscriber equipment exists three dynamic STI to be respectively STI1, STI2 and STI3 when network transitions for another example, and STI1 is included in first Replace message header, and STI2 is included in second Replace message header, and STI3 is included in the 3rd Replace message header;
This moment, SCC AS judged whether described access transfer request message comprises the Replace message header, was dynamic STI:STI1, STI2, the STI3 that then extracts each Replace message header if be judged as.
If one of described at least two dynamic STI distribute by the CS service control signaling channel, the method for salary distribution of the then described dynamic STI that distributes by the CS service control signaling channel comprises:
By initiating Multimedia session requesting users devices allocation; Or
Distribute by the respective server that receives the Multimedia session request; Or
Unite distribution by the respective server of initiating Multimedia session requesting users equipment and the request of reception Multimedia session.
Wherein, the described dynamic STI that distributes by the CS service control signaling channel can be included in the Request-URI message header;
And the dynamic STI that distributes by PS is included in Request-URI message header or Target-Dialog message header.
If by initiating Multimedia session requesting users devices allocation, then have two kinds of situations: a kind of situation sends to SCC AS for when user equipment (UE) initiates a session request by the I1 interface; Another kind of situation is for when described UE receives conversation request, and the response message by the I1 interface sends to SCCAS;
If distribute by the respective server that receives the Multimedia session request, when SCC AS receives the conversation request of UE, send to described UE by the response message in the I1 interface; When receiving other UE, for described UE distributes STI and sends to described UE by the I1 interface to conversation request that described UE initiates;
If unite distribution by the respective server of initiating Multimedia session requesting users equipment and the request of reception Multimedia session, comprise UE part and SCC AS part.When UE initiates a session request, carry the UE part, SCC AS distributes SCC AS part after receiving the request of described UE, and sends to described UE by the I1 interface; When described SCC AS receives other UE to conversation request that described UE initiates, be that described UE distributes SCC AS part, and send to described UE that described UE receives that the back distributes the UE part, and by the I1 interface dynamic STI is sent to described SCCAS by the I1 interface.For example: the form of STI can be uea1.xfer@sccas.home1.xfer, and the uea1.xfer of @ symbol front is the UE part, and the sccas.home1.xfer of @ symbol back is a SCC AS part; Or the form of STI can be " Call ID; UE Tag; SCC AS Tag ", the Call ID here can be a random number or a character string, by the side's of initiating a session request distribution; promptly when UE initiates a session request, distribute by UE, when other UE when described UE initiates request; distributed by SCC AS, this Call ID is used for identifying this session.UE Tag is the label that UE distributes, and is used for identifying UE.SCC AS Tag is used for identifying SCC AS for the label that SCC AS distributes.Same UE Tag and SCC AS Tag can be a random number or a character string.When this calling was initiated for UE, UE distributed Call ID and UE Tag, and this two parts cooperation becomes the UE part together, and SCC AS distributes SCC AS Tag, and SCC AS Tag is a SCC AS part; When this called out to other UE initiations, SCC AS distributed Call ID and SCC AS Tag, and this two parts cooperation becomes SCC AS part together, and UE distributes UE Tag, and UE Tag is the UE part.
The major advantage of the scheme that is proposed in the middle of the present embodiment has been to solve UE and has carried out shifting between Access Network the problem that how to realize shifting between network when having at least two dynamic STI.
Second embodiment provided by the invention is the method that another kind of Multimedia session shifts between Access Network, comprises the steps:
Wherein, described access transfer request comprises: the voice of CS network connect transfers to the PS network, or the connection of the data between PS network transfer request, or the voice between the PS network connect transfer.
When the described access transfer request that comprises at least two dynamic transfer sign STI represents that user equipment (UE) exists voice to connect the needs transfer, also exist one data connection to need to shift; Can represent that also UE exists two voice to connect and needs to shift; When can represent that also UE exists two voice to connect the needs transfer, also existing data to connect needs to shift; Can represent that also UE exists a plurality of data to connect and needs to shift.
And described message header is a kind of below including but not limited at least:
Replace message header, Request-URI message header or Target-Dialog message are first-class;
And subscriber equipment is when comprising at least two dynamic STI, described at least two dynamic STI can be included in the same message header of described access transfer request message or in the different messages head;
If subscriber equipment will at least two dynamic STI when being included in the same message header of described access transfer request message, connect by special connector between each dynamic STI, for example subscriber equipment exists three dynamic STI to be respectively STI1, STI2 and STI3 when network transitions, then can in the identical message head, adopt special connector to connect, for example comprise STI1@STI2@STI3 at the Request-URI of described access transfer request message message header, wherein, described STI1@STI2@STI3 can also take STI1; STI2; The form of STI3 is perhaps taked the form of STI1||STI2||STI3;
If subscriber equipment will at least two dynamic STI when being included in the different messages head of described access transfer request message, for example subscriber equipment exists three dynamic STI to be respectively STI1, STI2 and STI3 when network transitions,
Then STI1 can be included in the Replace message header, STI2 is included in the Request-URI message header, and STI3 is included in the Target-Dialog message header;
Or STI1 is included in the Request-URI message header, and STI2 is included in first Replace message header, and STI3 is included in second Replace message header;
Also STI1 can be included in the Request-URI message header, STI2 is included in the Target-Dialog message header, and STI3 is included in the Target-Dialog message header;
Also STI1, STI2 and STI3 can be included in respectively in three Replace message headers of described access transfer request message;
Perhaps STI1, STI2 and STI3 are included in respectively in three Request-URI message headers of described access transfer request message;
Perhaps STI1, STI2 and STI3 are included in respectively in three Target-Dialog message headers of described access transfer request message.
In addition, if described access transfer request comprises that the voice of CS network connect the voice of transferring to PS network and described CS network and connect by the foundation of I1 interface, be that one of described at least two dynamic STI distribute by the CS service control signaling channel, the method for salary distribution of the then described dynamic STI that distributes by the CS service control signaling channel comprises:
By initiating Multimedia session requesting users devices allocation; Or
Distribute by the respective server that receives the Multimedia session request; Or
Unite distribution by the respective server of initiating Multimedia session requesting users equipment and the request of reception Multimedia session.
Wherein, the described dynamic STI that distributes by the CS service control signaling channel can be included in the Request-URI message header;
And the dynamic STI that distributes by PS is included in Request-URI message header or Target-Dialog message header.
If by initiating Multimedia session requesting users devices allocation, then have two kinds of situations: a kind of situation sends to SCC AS for when user equipment (UE) initiates a session request by the I1 interface; Another kind of situation is for when described UE receives conversation request, and the response message by the I1 interface sends to SCCAS;
If distribute by the respective server that receives the Multimedia session request, when SCC AS receives the conversation request of UE, send to described UE by the response message in the I1 interface; When receiving other UE, for described UE distributes STI and sends to described UE by the I1 interface to conversation request that described UE initiates;
If unite distribution by the respective server of initiating Multimedia session requesting users equipment and the request of reception Multimedia session, comprise UE part and SCC AS part.When UE initiates a session request, carry the UE part, SCC AS distributes SCC AS part after receiving the request of described UE, and sends to described UE by the I1 interface; When described SCC AS receives other UE to conversation request that described UE initiates, be that described UE distributes SCC AS part, and send to described UE that described UE receives that the back distributes the UE part, and by the I1 interface dynamic STI is sent to described SCCAS by the I1 interface.For example: the form of STI can be uea1.xfer@sccas.home1.xfer, and the uea1.xfer of @ symbol front is the UE part, and the sccas.home1.xfer of @ symbol back is a SCC AS part; Or the form of STI can be " Call ID; UE Tag; SCC AS Tag ", the Call ID here can be a random number or a character string, by the side's of initiating a session request distribution; promptly when UE initiates a session request, distribute by UE, when other UE when described UE initiates request; distributed by SCC AS, this Call ID is used for identifying this session.UE Tag is the label that UE distributes, and is used for identifying UE.SCC AS Tag is used for identifying SCC AS for the label that SCC AS distributes.Same UE Tag and SCC AS Tag can be a random number or a character string.When this calling was initiated for UE, UE distributed Call ID and UE Tag, and this two parts cooperation becomes the UE part together, and SCC AS distributes SCC AS Tag, and SCC AS Tag is a SCC AS part; When this called out to other UE initiations, SCC AS distributed Call ID and SCC AS Tag, and this two parts cooperation becomes SCC AS part together, and UE distributes UE Tag, and UE Tag is the UE part.
The response message of step 202, the described access transfer request message of reception is also handled the flow process that described access is shifted.
The major advantage of the scheme that is proposed in the middle of the present embodiment has been to solve UE and has carried out shifting between Access Network the problem that how to realize shifting between network when having at least two dynamic STI.
The 3rd embodiment provided by the invention is the method flow that a kind of Multimedia session shifts between Access Network,
As shown in Figure 3, at first, UE-A has ICS (IMS Centralised Service, IMS centralized control business) UE of ability, ICS UE is the UE with service control signaling channel, service control signaling channel is the signaling paths between UE and SCC AS, and the service control signaling channel of setting up by the CS network is the CS service control signaling channel, and the service control signaling channel of setting up by the PS network is the PS service control signaling channel.In the ICS problem, can use I1 interface replaced C S service control signaling channel, use Gm to replace the PS service control signaling channel.
The entity that MSC Server:CS mobile network soft switch is introduced comprises the functions such as calling control, mobile management of MSC, the Media Stream of control CS-MGW (CS media gateway) bearing call;
Wherein, MSC Server and UE are by mobile network layer 3 signalings communicate by letter (as 24.008 signalings in the 3GPP network).MSC Server can realize IMS network SIP signaling and the conversion of mobile network layer3 signaling simultaneously;
The CS-MGW:CS media gateway is used for the intercommunication of the CS network and IMS network media stream;
S-CSCF:Serving-CSCF, serving CSCF, wherein CSCF (Call Session ControlFunction, CSCF): carry out registration/greffier's function, carry out the session control service;
SCC AS (SCC Application Server, SCC application server): wherein SCC is Service Centralization﹠amp; Continuity, service set and conversation continuity, SCC AS finish the forwarding function that inserts between different Access Networks between branch (Access Leg);
Suppose a kind of scene herein: use the ICS UE-A of I1 interface in PS1, to exist data to be connected, connect at voice at the CS network internal storage with UE-B.The dynamic STI of the access leg correspondence in PS1 is STI-1, and the dynamic STI of the access leg correspondence in the CS network is STI-2.When described UE-A moves to the zone that PS2 covers, this PS2 has higher message transmission rate and quality of voice transmission, and this moment, described UE-A initiatively initiated the process that shifts to PS2 to PS2 and PS1 from the CS network.
As shown in Figure 3, the method flow of access transfer is as follows:
Step 301, ICS UE-A initiate to insert transfer request message to SCC AS in PS2, comprise dynamic STI-1 and STI-2 in this access transfer request message, and this inserts transfer request message and arrives SCC AS through S-CSCF;
Here two dynamic STI can carry by two kinds of methods:
Method one: be included in the different sip message heads;
Dynamic STI (STI-1) is included in the Replace message header in the PS1, and the dynamic STI (STI-2) that obtains by the I1 interface is included in Request-URI message header or the Target-Dialog message header;
STI-1 can also be included in the Target-Dialog message header, STI-2 is included in the Replace message header;
Also can comprise two Replace message headers by sip message, each Replace message header comprises a dynamic STI; Or sip message comprises two Target-Dialog message headers, and each Target-Dialog message header comprises a dynamic STI;
Method two: be included in same sip message head;
Two dynamic STI are included in Replace message header or the Target-Dialog message header simultaneously; Wherein, connect with special connector between two dynamic STI, for example STI1@STI2, STI1; STI2 or STI1||STI2;
The dynamic STI (STI-2) that transmits by the I1 interface has following 3 kinds of methods of salary distribution:
Mode one, distribute by UE-A:
A kind of situation sends to SCCAS for when user equipment (UE) initiates a session request by the I1 interface; Another kind of situation is for when described UE receives conversation request, and the response message by the I1 interface sends to SCC AS;
Mode two, distribute by SCC AS:
When SCC AS receives the conversation request of UE, send to described UE by the response message in the I1 interface; When receiving other UE, for described UE distributes STI and sends to described UE by the I1 interface to conversation request that described UE initiates;
Mode three, unite distribution by UE-A and SCC AS:
Comprise UE part and SCC AS part, when UE initiates a session request, carry the UE part, SCC AS receives distribution SCC AS part after the request of described UE, and sends to described UE by the I1 interface; When described SCC AS receives other UE to conversation request that described UE initiates, be that described UE distributes SCC AS part, and send to described UE that described UE receives that the back distributes the UE part, and by the I1 interface dynamic STI is sent to described SCC AS by the I1 interface.For example: the form of STI can be uea1.xfer@sccas.home1.xfer, and the uea1.xfer of @ symbol front is the UE part, and the sccas.home1.xfer of @ symbol back is a SCC AS part; Or the form of STI can be " Call ID; UE Tag; SCC AS Tag ", the Call ID here can be a random number or a character string, by the side's of initiating a session request distribution; promptly when UE initiates a session request, distribute by UE, when other UE when described UE initiates request; distributed by SCC AS, this CallID is used for identifying this session.UE Tag is the label that UE distributes, and is used for identifying UE.SCCAS Tag is used for identifying SCC AS for the label that SCC AS distributes.Same UE Tag and SCC AS Tag can be a random number or a character string.When this calling was initiated for UE, UE distributed Call ID and UE Tag, and this two parts cooperation becomes the UE part together, and SCC AS distributes SCC AS Tag, and SCC AS Tag is a SCC AS part; When this called out to other UE initiations, SCC AS distributed Call ID and SCC AS Tag, and this two parts cooperation becomes SCC AS part together, and UE distributes UE Tag, and UE Tag is the UE part.
Step 302, SCC AS have comprised two dynamic STI according to the request message in the step 301, know that UE-A need move on to the access leg of CS network PS2 and the access leg of PS1 is transferred to PS2, then SCC AS upgrades the described UE-B in opposite end of described UE-A, its objective is that the described UE-B of request will be connected to the PS2 of UE-A with the voice-and-data of described UE-A; This request message arrives described UE-B through described S-CSCF;
Wherein, SCC AS knows that the method that has comprised two dynamic STI in the request message of UE is:
A) be included in the situation of different message headers for two dynamic STI:
SCC AS judges whether to comprise dynamic STI according to the content of Request-URI message header, if comprise the session that the CS network is shifted in explanation UE-A request, SCC AS judges whether sip message comprises Replace or Target-Dialog message header, if comprise the session that the PS1 network is shifted in explanation UE-A request;
Or SCC AS judges whether request message comprises in Replace and the Target-Dialog message header simultaneously, if the session of CS and PS1 network is shifted in explanation UE-A request;
Or SCC AS judges whether request message comprises two Replace or two Target-Dialog message headers, if the session of CS and PS1 is shifted in explanation UE-A request;
B) be included in the situation of same message header for two dynamic STI:
SCC AS judges whether comprise two dynamic STI in Replace or the Target-Dialog message header, if the session of CS and PS1 network is shifted in explanation UE-A request, can be to distinguish different STI according to special connector here;
Step 303, described UE-B return 200 OK acknowledge messages, and this acknowledge message arrives described SCC AS through described S-CSCF;
Step 304, described SCC AS send 200OK message to described UE-A, confirm to shift successfully, and this message arrives described UE-A through described S-CSCF;
Step 305, described SCC AS send bye message to the access leg of the CS of described UE-A network, and the effect of this message is to disconnect described UE-A to be connected with the voice of described UE-B, and this message arrives the MSC Server of described UE-A correspondence through described S-CSCF;
The MSC Server of step 306, described UE-A correspondence sends Disconnect message to described UE-A after receiving Bye message;
Step 307, described UE-A return Release message to described MSC Server;
After step 308, described MSC Server receive Release message, send 200 OK acknowledge messages to described SCC AS, confirm that voice disconnect successfully, this acknowledge message arrives described SCC AS through described S-CSCF;
Step 309, described SCC AS send bye message to the access leg of the PS1 of described UE-A network, and the effect of this message is to disconnect described UE-A to be connected with the data of described UE-B, and this message arrives described UE-A through described S-CSCF;
Step 3010, described UE-A return 200 OK acknowledge messages to described SCC AS, confirm that the data connection disconnects successfully, and this acknowledge message arrives described SCC AS through described S-CSCF;
The method flow that the major advantage of the scheme that is proposed in the middle of the present embodiment has been to provide a kind of scene lower network to shift is described the solution when a plurality of dynamic STI is arranged when subscriber equipment carries out network transitions in detail.
The 4th embodiment provided by the invention is the method flow that another kind of Multimedia session shifts between Access Network, comprises
As shown in Figure 4, it is identical that functional entity and embodiment three describe, and repeats no more herein.
Suppose that herein a kind of scene: UE-A and UE-B exist voice to be connected in PS1, in PS2, exist data to connect; The dynamic STI of the access leg correspondence in PS1 is STI-1, and the dynamic STI of the access leg correspondence in PS2 is STI-2.When described UE-A moves to the zone of a PS3 network coverage, with respect to PS1 and PS2, PS3 has higher message transmission rate and quality of voice transmission, and this moment, described UE-A initiatively initiated from PS1 to PS3 network and the PS2 process to the PS3 network transitions.
As shown in Figure 4, concrete steps are as follows:
Step 401, UE-A initiate to insert transfer request message to SCC AS in the PS3 network, comprise dynamic STI-1 and STI-2 in this access transfer request message, and this inserts transfer request message and arrives SCC AS through S-CSCF;
Here two dynamic STI can carry by two kinds of methods:
Method one: be included in the different sip message heads;
Dynamic STI (STI-1) is included in the Replace message header in the PS1 network, and dynamic STI (STI-2) is included in Request-URI message header or the Target-Dialog message header in the PS2 network;
STI-1 can also be included in the Target-Dialog message header, STI-2 is included in the Replace message header;
Also can comprise two Replace message headers by sip message, each message header comprises a dynamic STI; Or sip message comprises two Target-Dialog message headers, and each message header comprises a dynamic STI;
Method two: be included in same sip message head;
Two dynamic STI are included in Replace message header or the Target-Dialog message header simultaneously; Wherein, connect with special connector between two dynamic STI, for example STI1@STI2, STI1; STI2 or STI1||STI2;
Step 402, SCC AS have comprised two dynamic STI according to the request message in the step 401, know that UE-A need move on to the access leg of PS1 PS3 and the access leg of PS2 is transferred to PS3, then SCC AS upgrades the described UE-B in opposite end of described UE-A, its objective is that the described UE-B of request will be connected to the PS3 of UE-A with the voice-and-data of described UE-A; This request message arrives described UE-B through described S-CSCF;
Wherein, SCC AS knows that the method that has comprised two dynamic STI in the request message of UE is:
Situation one: be included in the situation of different message headers for two dynamic STI,
SCC AS judges whether to comprise dynamic STI according to the content of Request-URI message header, if comprise the session that the PS1 network is shifted in explanation UE-A request, SCC AS judges whether sip message comprises Replace or Target-Dialog message header, if comprise the session that the PS2 network is shifted in explanation UE-A request;
Or SCC AS judges whether request message comprises in Replace and the Target-Dialog message header simultaneously, if the session of PS1 and PS2 network is shifted in explanation UE-A request;
Or SCC AS judges whether request message comprises two Replace or two Target-Dialog message headers, if the session of PS1 and PS2 network is shifted in explanation UE-A request;
Situation two: comprise the situation that same message header carries for two dynamic STI,
SCC AS judges whether comprise two dynamic STI in Replace or the Target-Dialog message header, if the session of PS1 and PS2 network is shifted in explanation UE-A request, can be to distinguish different STI according to special connector here;
Step 403, described UE-B return 200 OK acknowledge messages, and this acknowledge message arrives described SCC AS through described S-CSCF;
Step 404, described SCC AS send 200 OK message to described UE-A, confirm to shift successfully, and this message arrives described UE-A through described S-CSCF;
Step 405, described SCC AS send bye message to the access leg of the PS1 of described UE-A network, and the effect of this message is to disconnect described UE-A to be connected with the voice of described UE-B, and this message arrives described UE-A through described S-CSCF;
Step 406, described UE-A return 200 OK acknowledge messages to described SCC AS, confirm that the voice connection disconnects successfully, and this acknowledge message arrives described UE-A through described S-CSCF;
Step 407, described SCC AS send bye message to the access leg of the PS2 of described UE-A network, and the effect of this message is to disconnect UE-A to be connected with the data of UE-B, and this message arrives described UE-A through described S-CSCF;
Step 408, described UE-A return 200 OK acknowledge messages to described SCC AS, confirm that the data connection disconnects successfully, and this acknowledge message arrives described UE-A through described S-CSCF;
The method flow that the major advantage of the scheme that is proposed in the middle of the present embodiment has been to provide another kind of scene lower network to shift is described the solution when a plurality of dynamic STI is arranged when subscriber equipment carries out network transitions in detail.
The 5th embodiment provided by the invention is the server that a kind of Multimedia session shifts between Access Network, comprises as lower module:
As shown in Figure 5, server 51 includes but not limited to computer and smart machine, wherein smart machine is the equipment with signal handling capacity, include but not limited to mobile internet device, fixed the Internet equipment and be applicable to 2G, 2.5G, following 3G, back 3G and IP multimedia subsystem (IMS) mobile network appliance, server 51 is used to realize the function of CRS AS, and has the function that realizes resolving a plurality of dynamic STI;
Receiver module 501: be used to receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated;
Parsing module 502: be used to resolve described at least two the dynamic STI of described access transfer request message extraction that described receiver module 501 receives;
Shift module 503: the access transfer flow that is used for handling described user equipment requests according to described at least two dynamic STI that described parsing module 502 extracts.
The major advantage of the scheme that is proposed in the middle of the present embodiment has been to provide a kind of server that inserts transfer to solve UE to carry out shifting between Access Network the problem that how to realize shifting between network when having at least two dynamic STI.
The 6th embodiment provided by the invention is the system that a kind of Multimedia session shifts between Access Network, comprising:
Subscriber equipment, server etc., wherein said subscriber equipment include but not limited to that mobile phone, PDA etc. have the electronic equipment of wireless communication ability; Described server includes but not limited to computer and smart machine, wherein smart machine is the equipment with signal handling capacity, include but not limited to mobile internet device, fixed the Internet equipment and be applicable to 2G, 2.5G, following 3G, back 3G and IP multimedia subsystem (IMS) mobile network appliance.
The system that a kind of Multimedia session shifts between Access Network comprises server,
Described server receives the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated, resolve described access transfer request message and extract described at least two dynamic STI, handle the access transfer flow of described user equipment requests at least according to described two dynamic STI.
As shown in Figure 6, described server 61 is used to realize the function of CRS AS, and has the function that realizes resolving a plurality of dynamic STI; And described server 61 comprises with lower module:
Receiver module 601: be used to receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated;
Parsing module 602: be used to resolve described at least two the dynamic STI of described access transfer request message extraction that described receiver module 601 receives;
Shift module 603: the access transfer flow that is used for handling described user equipment requests according to described at least two dynamic STI that described parsing module 602 extracts.
The major advantage of the scheme that is proposed in the middle of the present embodiment has been to provide a kind of Multimedia session to solve in the system that shifts between Access Network and has realized that there is the problem that shifts between the net of at least two dynamic STI in UE.
The 7th embodiment provided by the invention is the subscriber equipment that a kind of Multimedia session shifts between Access Network, comprises as lower module:
As shown in Figure 7, subscriber equipment 71 includes but not limited to that mobile phone, PDA etc. have the electronic equipment of wireless communication ability; Comprise as lower module:
Sending module 701: be used to send the access transfer request message that comprises at least two dynamic STI;
Processing module 702: be used to receive the response message of the described access transfer request message that described sending module 701 sends and handle the flow process that described access is shifted;
Comprise dynamic STI module 7001: it is positioned at sending module 701 inside, is used at least two dynamic STI are included in the different messages head or identical message head of described access transfer request message.
The major advantage of the scheme that is proposed in the middle of the present embodiment has been to provide the function module design mode of the subscriber equipment that a kind of Multimedia session shifts between Access Network, it is had realize existing the function that shifts between the net of at least two dynamic STI.
The 8th embodiment provided by the invention is the system that a kind of Multimedia session shifts between Access Network, comprising:
Subscriber equipment, server etc., wherein said subscriber equipment include but not limited to that mobile phone, PDA etc. have the electronic equipment of wireless communication ability; Described server includes but not limited to computer and smart machine, wherein smart machine is the equipment with signal handling capacity, include but not limited to mobile internet device, fixed the Internet equipment and be applicable to 2G, 2.5G, following 3G, back 3G and IP multimedia subsystem (IMS) mobile network appliance.
The system that a kind of Multimedia session shifts between Access Network comprises server,
Described subscriber equipment sends the access transfer request message that comprises at least two dynamic STI, receives the response message of described access transfer request message and handles the flow process that described access is shifted.
As shown in Figure 8, subscriber equipment 81 comprises as lower module:
Sending module 801: be used to send the access transfer request message that comprises at least two dynamic STI;
Processing module 802: be used to receive the response message of the described access transfer request message that described sending module 801 sends and handle the flow process that described access is shifted;
Comprise dynamic STI module 8001: it is positioned at sending module 801 inside, is used at least two dynamic STI are included in the different messages head or identical message head of described access transfer request message.
The system that the major advantage of the scheme that is proposed in the middle of the present embodiment has been to provide a kind of Multimedia session to shift between Access Network has it and realizes existing the function that shifts between the net of at least two dynamic STI.
It will be appreciated by those skilled in the art that: accompanying drawing is the schematic diagram of a preferred embodiment, and the module in the accompanying drawing, entity or flow process might not be that enforcement is essential to the invention.
It will be appreciated by those skilled in the art that: module in the subscriber equipment among the embodiment, server and the system or entity can be distributed in according to the description of embodiment in subscriber equipment, server and the system of embodiment, also can carry out respective change and be arranged in the one or more equipment that are different from present embodiment.Module of the foregoing description or entity can be merged into a module or entity, also can further split into a plurality of submodules or entity.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform, based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (21)
1. the method that Multimedia session shifts between Access Network is characterized in that, comprising:
Receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated;
Handle the access transfer flow of described user equipment requests at least according to described two dynamic STI.
2. method according to claim 1 is characterized in that, described at least two dynamic STI are included in the same message header of described access transfer request message or in the different messages head.
3. method as claimed in claim 1 or 2 is characterized in that, the access transfer request message that comprises at least two dynamic sessions transfer sign STI that described reception subscriber equipment is initiated comprises:
Resolve described access transfer request message and extract described at least two dynamic STI.
4. method as claimed in claim 2 is characterized in that, described message header comprises following at least a kind of:
Replace message header, Request-URI message header or Target-Dialog message header.
5. as claim 2 or 4 described methods, it is characterized in that, when described at least two dynamic STI were included in the different messages head of described access transfer request message, described transfer request message comprised at least two Replace message headers, and each Replace message header comprises a dynamic STI; Or
Described transfer request message comprises at least two Target-Dialog message headers, and each Target-Dialog message header comprises a dynamic STI.
6. method as claimed in claim 1 or 2 is characterized in that,
If one of described at least two dynamic STI distribute by the CS service control signaling channel, the method for salary distribution of the then described dynamic STI that distributes by the CS service control signaling channel comprises:
By initiating Multimedia session requesting users devices allocation; Or
Distribute by the respective server that receives the Multimedia session request; Or
Unite distribution by the respective server of initiating Multimedia session requesting users equipment and the request of reception Multimedia session.
7. method as claimed in claim 6, it is characterized in that, when the described dynamic STI that distributes by the CS service control signaling channel unites the branch timing by the respective server of described initiation Multimedia session requesting users equipment and the request of described reception Multimedia session, described dynamic STI comprises User Part and server section.
8. method as claimed in claim 1 or 2, it is characterized in that, if one of described at least two dynamic STI distribute by the CS service control signaling channel, the then described dynamic STI that distributes by the CS service control signaling channel is included in the Request-URI message header.
9. the method that Multimedia session shifts between Access Network is characterized in that, comprising:
Transmission comprises the access transfer request message of at least two dynamic STI;
Receive the response message of described access transfer request message and handle the flow process that described access is shifted.
10. method as claimed in claim 9 is characterized in that, described at least two dynamic STI are included in the same message header of described access transfer request message or in the different messages head.
11. method as claimed in claim 10 is characterized in that, described message header comprises following at least a kind of:
Replace message header, Request-URI message header or Target-Dialog message header.
12. method as claimed in claim 10 is characterized in that,
If when described at least two dynamic STI are included in the same message header of described access transfer request message, connect by special connector between each dynamic STI;
If when described at least two dynamic STI are included in the different messages head of described access transfer request message, comprise a dynamic STI in each message header.
13. as claim 10 or 11 described methods, it is characterized in that, when described at least two dynamic STI are included in the different messages head of described access transfer request message, described transfer request message comprises at least two Replace message headers, and each Replace message header comprises a dynamic STI; Or
Described transfer request message comprises at least two Target-Dialog message headers, and each Target-Dialog message header comprises a dynamic STI.
14. as claim 9 or 10 described methods, it is characterized in that,
If one of described at least two dynamic STI distribute by the CS service control signaling channel, the method for salary distribution of the then described dynamic STI that distributes by the CS service control signaling channel comprises:
By initiating Multimedia session requesting users devices allocation; Or
Distribute by the respective server that receives the Multimedia session request; Or
Unite distribution by the respective server of initiating Multimedia session requesting users equipment and the request of reception Multimedia session.
15. method as claimed in claim 14, it is characterized in that, when the described dynamic STI that distributes by the CS service control signaling channel unites the branch timing by the respective server of described initiation Multimedia session requesting users equipment and the request of described reception Multimedia session, described dynamic STI comprises User Part and server section.
16. as claim 9 or 10 described methods, it is characterized in that,, if one of described at least two dynamic STI distribute by the CS service control signaling channel, the then described dynamic STI that distributes by the CS service control signaling channel is included in the Request-URI message header.
17. the server that Multimedia session shifts between Access Network is characterized in that, described server comprises:
Receiver module: be used to receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated;
Parsing module: be used to resolve described at least two the dynamic STI of described access transfer request message extraction that described receiver module receives;
Shift module: the access transfer flow that is used for handling described user equipment requests according to described at least two dynamic STI that described parsing module extracts.
18. the system that Multimedia session shifts between Access Network comprises server, it is characterized in that,
Described server is used to receive the access transfer request message that comprises at least two dynamic sessions transfer sign STI that subscriber equipment is initiated, and handles the access transfer flow of described user equipment requests at least according to described two dynamic STI.
19. the subscriber equipment that Multimedia session shifts between Access Network is characterized in that, described subscriber equipment comprises:
Sending module: be used to send the access transfer request message that comprises at least two dynamic STI;
Processing module: be used to receive the response message of the described access transfer request message that described sending module sends and handle the flow process that described access is shifted.
20. subscriber equipment as claimed in claim 19 is characterized in that, described sending module comprises:
Comprise dynamic STI module: be used at least two dynamic STI are included in the different messages head or same message header of described access request message.
21. the system that Multimedia session shifts between Access Network comprises subscriber equipment, it is characterized in that,
Described subscriber equipment is used to send the access transfer request message that comprises at least two dynamic STI, receives the response message of described access transfer request message and handles the flow process that described access is shifted.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810242204.0A CN101771978A (en) | 2008-12-31 | 2008-12-31 | Method, device and system for transferring multimedia session in access networks |
| PCT/CN2009/075303 WO2010075719A1 (en) | 2008-12-31 | 2009-12-04 | Multimedia session transfer method, device and system between access networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810242204.0A CN101771978A (en) | 2008-12-31 | 2008-12-31 | Method, device and system for transferring multimedia session in access networks |
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| CN101771978A true CN101771978A (en) | 2010-07-07 |
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| WO (1) | WO2010075719A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997847A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Method and system for realizing service continuity in the case of switching circuit switch multi-session to packet switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1897743B (en) * | 2005-07-11 | 2012-01-25 | 华为技术有限公司 | Method for supporting and switching multiple conversation in wireless access network |
| CN101193449B (en) * | 2006-11-27 | 2011-02-09 | 华为技术有限公司 | System, method and device for realizing continuous multimedia session |
| CN101247637B (en) * | 2007-02-15 | 2011-04-20 | 华为技术有限公司 | Method and system for providing conversation switch in multi-access mode |
| CN101330748B (en) * | 2007-07-31 | 2011-11-30 | 中兴通讯股份有限公司 | Method for switching control route of IP multimedia subsystem centralized business conversation |
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2008
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997847A (en) * | 2009-08-14 | 2011-03-30 | 中兴通讯股份有限公司 | Method and system for realizing service continuity in the case of switching circuit switch multi-session to packet switch |
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