CN1859426A - Method for connecting multimedia subsystem of circuit field terminal and its realizing device - Google Patents
Method for connecting multimedia subsystem of circuit field terminal and its realizing device Download PDFInfo
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Abstract
The present invention discloses circuit domain terminal accessing multimedia subsystem method. It contains Mobile switching center MSC simulating IMS terminal originating Session Initiation Protocol (SIP) signaling, accessing circuit domain terminal into multimedia subsystem IMS domain. The present invention also discloses searching called circuit domain terminal method through multimedia subsystem, after executing registered called complementary service value added service in multimedia subsystem IMS domain, forward shifting calling to terminal called mobile switching center MSC; said MSC receiving INVITE signaling from IMS domain, resolving called circuit domain terminal number and switching called terminal.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of method and implement device thereof of connecting multimedia subsystem of circuit field terminal.
Background technology
The mobile network is based on the system of circuit domain now, user terminal realizes that function ratio is more single, general support voice and simple data service, and IMS (IP Multimedia System) is as Next Generation Telecommunication Networks network architectural framework, with its unified certification that provides, to charge, open business provides system, with the IT system integration capability, more and more obtain the support of telecom equipment manufacturers, telecom operators easily.By the IMS system, the multi-media value-added business that can provide circuit domain to provide to 3G media user terminal for example presents business (Presence), instant message, video conference etc.
But existing circuit-domain network can not be supported the IMS network with the user terminal of serving the available circuit territory, if user terminal wishes to enjoy the services such as multi-media value-added business that the IMS system provides, must be replaced by the IMS user terminal, so existing user terminal of serving circuit domain in a large number is eliminated, and causes serious waste.Moreover, the available circuit domain system that operator sets up also will be eliminated, and cause the huge waste of investment.
Summary of the invention
The problem to be solved in the present invention provides the method and the implement device thereof in a kind of connecting multimedia subsystem of circuit field terminal IMS territory, to solve the technical problem that available circuit territory user terminal can't use the multi-media value-added business that the IMS territory provides.
For solving the problems of the technologies described above, the objective of the invention is to be achieved through the following technical solutions: a kind of method of connecting multimedia subsystem of circuit field terminal, moving exchanging center MSC simulation multimedia subsystem, IMS terminal initiation session initializtion protocol signaling inserts the IMS territory with circuit domain terminal.
Initiate when professional to moving exchanging center MSC when terminal, described MSC initiation session initiation protocol invite INVITE signaling inserts the IMS territory with described user terminal.From set up message the extracting parameter of described circuit domain terminal, in described INVITE signaling, carried to the MSC transmission.
When updating of terminal position, MSC initiates initial words protocol registration REGISTER signaling, with described endpoint registration to the IMS territory.MSC obtains the authentication information of user terminal by application protocol Diameter interface accessing home subscriber server HSS.The parameter information that carries in the described REGISTER signaling comprises mobile subscriber number and international mobile station identity.
Execution is arrived MSC with Call Forwarding after the supplementary service and value-added service of the registration of IMS territory; MSC receives the INVITE from the IMS territory, resolving called circuit domain user termination number, and it is called to continue.
Preferably, described MSC supports Session initiation protocol SIP signaling or SIP to be applied to the SIP-signaling in the integrated services digital network.
A kind of device of realizing connecting multimedia subsystem of circuit field terminal comprises the conversation initialized protocol Signaling Processing Unit, is used for various conversation initialized protocol signalings are handled.The IMS service trigger unit is used for Simulation with I MS territory terminal initiation session initializtion protocol signaling, and circuit domain terminal is inserted the IMS territory.
Described IMS service trigger unit comprises: initiate subelement, be used for Simulation with I MS terminal initiation session initiation protocol invite INVITE signaling, described circuit domain terminal is inserted the IMS territory.
Described IMS service trigger unit also comprises the registration subelement, is used to initiate initially talk about protocol registration REGISTER signaling, and described user terminal is registered to the IMS territory.
Described device also comprises the HSS data access unit, is used for the authentication information and the positional information of access terminal.The Diameter processing unit is used to handle various Diameter signalings.
Described IMS service trigger unit also comprises: receive subelement, be used to receive the INVITE signaling from the IMS territory, resolving called circuit domain terminal number.
Preferably, described device is arranged at moving exchanging center MSC inside.
A kind ofly seek the method for called circuit domain terminal by IP multimedia subsystem, IMS, in the multimedia subsystem, IMS territory, carry out the called class supplementary service and value-added service of registration after, with the moving exchanging center MSC of Call Forwarding under the terminal called; Described MSC receives the INVITE signaling from the IMS territory, resolving called circuit domain terminal number, switching called terminal.
Above technical scheme as can be seen, in the present invention, by moving exchanging center MSC Simulation with I MS terminal initiation session initializtion protocol SIP signaling, thereby with circuit domain user terminal access to IMS territory, make and existingly to serve the circuit domain user terminal and can insert the IMS territory, thereby enjoy the business such as multimedia increment that the IMS territory provides.
Further, execute after the supplementary service and value-added service of the registration of IMS territory, MSC is arrived in Call Forwarding; By the SIP INVITE of MSC reception from the IMS territory, resolving called circuit domain user termination number, thus it is called to continue.Make directly to communicate between the calling and called, saved the interoffice signaling of existing complexity by SIP-I.
Description of drawings
Fig. 1 is the method flow schematic diagram in circuit domain user terminal connecting multimedia subsystem IMS territory for it;
Fig. 2 is the schematic flow sheet of the called circuit domain terminal UE that continues in the IMS territory;
Fig. 3 is registered to the process schematic diagram of IMS network for circuit domain terminal;
Fig. 4 is the specific implementation process schematic diagram of step 330 among Fig. 3;
Fig. 5 realizes the networking schematic diagram of communication by the IMS territory for circuit domain terminal;
Fig. 6 is for realizing the apparatus structure schematic diagram in circuit domain user terminal connecting multimedia subsystem IMS territory.
Embodiment
See also Fig. 1, it is the method flow schematic diagram in circuit domain user terminal connecting multimedia subsystem IMS disclosed by the invention territory.Insert the method in IMS territory when mainly introducing the circuit domain user terminal in the present embodiment as caller equipment.
In order to introduce the present invention program more clearly, at first introduce the several functional entitys that relate in the described method.User terminal UE is the terminal of serving circuit domain, uses as caller equipment in the present embodiment, and provides serving mobile switching center MSC for calling terminal.Calling State Control function CSCF belongs to the functional entity in IP Multimedia System IMS territory, mainly comprises proxy CSCF (P-CSCF), serving CSCF (S-CSCF) and inquiry CSCF (I-CSCF).Wherein, P-CSCF is user terminal first contact point in IP Multimedia System; S-CSCF actual treatment BlueDrama state; I-CSCF is all contracted users that are connected to this Virtual network operator, perhaps is connected to the interior contact point of carrier network of the roamer in the service area that is currently located at this Virtual network operator.Caller application server AS 13 is used to provide value-added service, and it can be positioned at user's home network or third-party position, for example sip application server or OSA application server etc.
110: set up SETUP message request by the base station controller (not shown) to caller MSC transmission as call subscriber terminal UE and connect.
120: after caller MSC received the SETUP message of calling UE transmission, Simulation with I MS terminal was to caller CSCF initiation session initializtion protocol request INVITE signaling, and promptly the IMS calling service triggers INVITE.
INVITE belongs to Session Initiation Protocol family, IP Multimedia System IMS finishes voice and multimedia call by SIP or SIP-ITU-T, thereby reaches professional purpose such as support voice phone, real-time, interactive recreation, visual telephone, instant message, urgent call, multimedia conferencing.Described SIP-I refers to that SIP is applied to integrated services digital network, and the INVITE signaling can be based on the most basic SIP also can be based on SIP-I, and the various signalings of hereinafter mentioning based on SIP equally can be based on SIP-I.Therefore said process also can adopt SIP-ITU-T to send the INVITE signaling.The parameter that described INVITE carries mainly comprises From (calling number) and to calling and called information such as (called numbers), and above-mentioned these information are all from the corresponding field in the step 110Setup message.In other words, to the SETUP message that caller MSC sends, extract relevant parameter, in described INVITE, carried then from calling UE.
130: after caller CSCF receives the INVITE of MSC transmission, trigger calling service, carry out supplementary service of caller class and value-added service in the registration of IMS territory to AS.
Because MSC is the SIP INVITE that Simulation with I MS user sends, therefore for the CSCF and AS in IMS territory, identical with reception on handling from IMS user's SIP INVITE, can finish the realization of this step according to prior art.
Step 140:CSCF forwards the message to and is responsible for called CSCF according to the called address that carries in the INVITE.
Please continue to consult Fig. 2, it is the schematic flow sheet of the called circuit domain terminal UE that continues in the IMS territory.
210: called CSCF receives the SIP INVITE that caller CSCF transmits.
220: called CSCF23 triggers called service to called application server AS 24, carries out called class supplementary service and value-added service in the registration of IMS territory.
230: called CSCF23 according to called user terminal UE from the address which MSC registers up, directly with Call Forwarding to called MS C, called MS C receives SIP INVITE, parses the called user terminal number.
240: called MS C sends paging request Paging by base station controller to called user terminal.
250: calling and called both sides call setup.
Description embodiment illustrated in fig. 1 be the method that inserts the IMS territory when circuit domain terminal during for caller, and corresponding, description embodiment illustrated in fig. 2 be that circuit domain terminal is called, call out the method for this terminal from IMS.In the practical application, might calling terminal be circuit domain equipment also, and terminal called itself be an IMS equipment just.At this moment, the method that calling terminal inserts the IMS territory is identical with method embodiment illustrated in fig. 1, but calls out the method for called IMS terminal from the IMS territory, just needn't adopt method embodiment illustrated in fig. 2, directly gets final product according to calling out called method in the existing IMS system.In addition, also may occur calling terminal itself in the practical application and be IMS equipment, and terminal called is the situation of circuit domain equipment.At this moment, the method for calling out called circuit domain equipment from the IMS territory can adopt method shown in Figure 2, and the method in caller IMS terminal access to IMS territory directly gets final product according to the method that existing IMS system inserts.
No matter be that the circuit domain user terminal inserts the IMS territory as caller, still the precondition of calling out called circuit domain terminal from the IMS territory all needs described circuit domain terminal can be registered to the IMS network.Circuit domain terminal be registered to the IMS network development process, see also shown in Figure 3.
310: user terminal UE sends position register request to affiliated MSC, carries international mobile subscriber identity IMSI and mobile subscriber number in the described position register request.
320:MSC/VLR can judge the home subscriber register HSS of this UE according to IMSI, and to this HSS inquiry UE related parameter (mainly being user authentication information) is arranged, thereby finishes the process of upgrading the position; MSC needs directly visit HSS as can be seen, rather than the HLR in the traditional circuit domain, therefore correspondingly, the MAP interface of the original visit of MSC HLR changes the Diameter interface of visit HSS into, MSC obtains the authentication information of user terminal by application protocol Diameter interface accessing home subscriber server HSS.MSC need have the ability that Diameter is handled.
Step 330: user terminal UE is registered to CSCF in the IMS territory by MSC.This step is to make the circuit domain user terminal can be registered to the key in IMS territory, the specific implementation of this step as shown in Figure 4:
3301:MSC structure registration message SIP REGISTER, wherein the From/To header field is filled out the MSISDN of UE, utilize the other expansion header field mandate Authorization of registration, wherein Digest Username is user's IMSI, expands a parameter in addition and indicates this user to register up by MSC.
The pairing SIP URI of 3302:MSC inquiring user from E.164 Number server (Uniform ResourceIdentifier), and resolve its home domain, the pairing I-CSCF of this user domain of inquiry address forwards the message to I-CSCF then from domain name system DNS.
3303:I-CSCF inquires about HSS then and distributes a S-CSCF, and this message is given to corresponding S-CSCF, and S-CSCF judges that the user registers up by MSC, needn't carry out domestic consumer's register flow path, promptly by the user is authenticated, returns the response of succeeding in registration
3304:MSC receives the response of succeeding in registration.
Step 340:MSC sends the position to user terminal and upgrades confirmation.
From said process as can be seen, the difference of calling out with respect to traditional circuit domain is that MSC at first routes the call to IMS before making a call, handle after the caller value-added service by IMS, seek called at IMS, execute the called service of front, this moment, caller MSC and called MS C (being actually SIP UA user representative) were by the contact that signaling has been set up in the IMS territory, follow-uply finished calling with SIP-I signaling or SIP signaling again.Therefore MSC need support the SIP/SIP-I signaling.Please referring to Fig. 5, it is the networking schematic diagram of circuit domain terminal by the realization communication of IMS territory, and wherein MGW is existing media gateway.
The invention also discloses a kind of device of realizing circuit domain user terminal connecting multimedia subsystem IMS territory.Please referring to Fig. 6, it is the apparatus structure schematic diagram in realization circuit domain user terminal connecting multimedia subsystem IMS disclosed by the invention territory, and described device is arranged at moving exchanging center MSC inside.MSC51 shown in the present embodiment comprises two parts, and a part is the device 512 in newly-increased realization circuit domain user terminal connecting multimedia subsystem IMS territory for existing MSC functional unit 511, another part.
At first briefly introduce the inside general configuration of existing MSC functional unit 511, it mainly comprises three parts: interface unit, Signaling Processing Unit and Service Processing Unit.Wherein, described interface unit comprises coffret E1/T1 subelement, asynchronous transfer mode ATM subelement and hundred/gigabit ethernet interface FE/GE subelement, and interface unit is mainly communicating by letter between MSC and user terminal and the corresponding telecommunication node (IMS) service is provided.Signaling Processing Unit mainly comprises MAP signaling process subelement, ISUP signaling process subelement and BICC signaling process subelement or the like.Service Processing Unit comprises call treatment subelement, HLR storage subelement and gateway control function subelement or the like.
The device 512 in newly-increased realization circuit domain user terminal connecting multimedia subsystem IMS territory mainly comprises IMS service trigger unit, HSS data access unit, SIP class (SIP, SIP-I) Signaling Processing Unit and Diameter processing unit.Described SIP class Signaling Processing Unit is specifically as follows SIP Signaling Processing Unit or SIP-I Signaling Processing Unit, SIP-I refers to that SIP is applied to integrated services digital network ISDN, for the sake of clarity, directly draw in the drawings SIP-I Signaling Processing Unit and SIP Signaling Processing Unit.The IMS service trigger unit comprises again to be initiated subelement, registration subelement and receives subelement.Further introduce the internal structure of described device 512 below in conjunction with operation principle.
When circuit domain user updating of terminal position or initial registration, registration subelement, SIP Signaling Processing Unit, Diameter that MSC calls in the IMS service trigger unit are handled list and HSS data access unit.Wherein, registration subelement Simulation with I MS terminal is initiated SIP REGISTER signaling, and registration related circuit territory terminal is to the IMS network, and described registration message mainly comprises parameters such as MSISDN, IMSI.The SIP Signaling Processing Unit provides the support of SIP signaling for the registration subelement.Diameter processing unit and HSS data access unit are used for passing through Diameter interface accessing HSS, the authentication information of access user terminal and positional information in the process of registration.
When user terminal was initiated business as caller, MSC called initiation subelement and SIP signaling unit or the SIP-I signaling unit in the IMS service trigger unit.Wherein, initiate subelement and be used for Simulation with I MS terminal initiation session initiation protocol invite INVITE signaling, with described circuit domain user terminal access to IMS territory.After this carry out supplementary service and value-added service, seek called then in the IMS territory in the registration of IMS territory.The major parameter that INVITE carries comprises From (calling number), and to (called number) etc. all comes from the corresponding field in the original Setup message.The SIP Signaling Processing Unit provides the support of SIP signaling for initiating subelement, and the SIP-I Signaling Processing Unit provides the support of SIP signaling for initiating subelement.
When the circuit domain user terminal is professional as called reception, calling can at first trigger the IMS network, execution is in the supplementary service and the value-added service of the registration of IMS territory, and called then CSCF from the address which MSC registers up, directly arrives this MSC with Call Forwarding according to the user.MSC calls the sub-list of reception and SIP signaling unit or the SIP-I signaling unit reception INVITE signaling in the IMS service trigger unit, parses called number, gives the call treatment subelement then.The call treatment subelement is this terminal called of circuit domain call routinely.
The device in the realization circuit domain user terminal connecting multimedia subsystem IMS territory shown in Fig. 6 embodiment is arranged at existing MSC inside, described in actual applications device also can be provided with separately, only play the purpose of signaling conversion, and do not carry out concrete Business Processing, soon the communication signaling in the circuit domain is converted to the communication signaling in IMS territory.At this moment, in this device, also need to add some functional units among the existing MSC, but do not need to relate to the correlation unit of Business Processing, for example do not need ISUP Signaling Processing Unit and BICC Signaling Processing Unit or the like.
Method and the implement device thereof gone up a kind of circuit domain user terminal connecting multimedia subsystem IMS provided by the present invention territory are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1, a kind of method of connecting multimedia subsystem of circuit field terminal is characterized in that:
Moving exchanging center MSC simulation multimedia subsystem, IMS terminal initiation session initializtion protocol signaling inserts the IMS territory with circuit domain terminal.
2, the method for connecting multimedia subsystem of circuit field terminal as claimed in claim 1 is characterized in that:
Initiate when professional to moving exchanging center MSC when terminal, described MSC initiation session initiation protocol invite INVITE signaling inserts the IMS territory with described user terminal.
3, the method for connecting multimedia subsystem of circuit field terminal as claimed in claim 2 is characterized in that also comprising:
From set up message the extracting parameter of described circuit domain terminal, in described INVITE signaling, carried to the MSC transmission.
4, the method for connecting multimedia subsystem of circuit field terminal as claimed in claim 1 is characterized in that:
When updating of terminal position, MSC initiates initial words protocol registration REGISTER signaling, with described endpoint registration to the IMS territory.
5, the method for connecting multimedia subsystem of circuit field terminal as claimed in claim 4 is characterized in that: MSC obtains the authentication information of user terminal by application protocol Diameter interface accessing home subscriber server HSS.
6, as the method for claim 4 or 5 described connecting multimedia subsystem of circuit field terminal, it is characterized in that: the parameter information that carries in the described REGISTER signaling comprises mobile subscriber number and international mobile station identity.
7, as the method in claim 1 or 2 or 4 described connecting multimedia subsystem of circuit field terminal IMS territories, it is characterized in that also comprising:
Execution is arrived MSC with Call Forwarding after the supplementary service and value-added service of the registration of IMS territory; MSC receives the INVITE from the IMS territory, resolving called circuit domain user termination number, and it is called to continue.
8, the method with connecting multimedia subsystem of circuit field terminal as claimed in claim 1 is characterized in that: described MSC supports Session initiation protocol SIP signaling or SIP to be applied to the SIP-signaling in the integrated services digital network.
9, a kind of device of realizing connecting multimedia subsystem of circuit field terminal is characterized in that comprising:
The conversation initialized protocol Signaling Processing Unit is used for various conversation initialized protocol signalings are handled;
The IMS service trigger unit is used for Simulation with I MS territory terminal initiation session initializtion protocol signaling, and circuit domain terminal is inserted the IMS territory.
10, the device of realization connecting multimedia subsystem of circuit field terminal as claimed in claim 9 is characterized in that, described IMS service trigger unit comprises:
Initiate subelement, be used for Simulation with I MS terminal initiation session initiation protocol invite INVITE signaling, described circuit domain terminal is inserted the IMS territory.
As the device of claim 9 or 10 described realization connecting multimedia subsystem of circuit field terminal, it is characterized in that 11, described IMS service trigger unit also comprises:
The registration subelement is used to initiate initially talk about protocol registration REGISTER signaling, and described user terminal is registered to the IMS territory.
12, the device of realization connecting multimedia subsystem of circuit field terminal as claimed in claim 11 is characterized in that also comprising:
The HSS data access unit is used for the authentication information and the positional information of access terminal.
13, the device of realization connecting multimedia subsystem of circuit field terminal as claimed in claim 12 is characterized in that also comprising:
The Diameter processing unit is used to handle various Diameter signalings.
14, the device of connecting multimedia subsystem of circuit field terminal as claimed in claim 9 is characterized in that, described IMS service trigger unit also comprises:
Receive subelement, be used to receive INVITE signaling, resolving called circuit domain terminal number from the IMS territory.
15, the device of connecting multimedia subsystem of circuit field terminal as claimed in claim 9 is characterized in that, described device is arranged at moving exchanging center MSC inside.
16, a kind ofly seek the method for called circuit domain terminal, it is characterized in that by IP multimedia subsystem, IMS:
After in the multimedia subsystem, IMS territory, carrying out the called class supplementary service and value-added service of registration, with the moving exchanging center MSC of Call Forwarding under the terminal called;
Described MSC receives the INVITE signaling from the IMS territory, resolving called circuit domain terminal number, switching called terminal.
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| WO2010133124A1 (en) * | 2009-05-22 | 2010-11-25 | 华为技术有限公司 | Method, system and network device for evolving circuit switched domain core network |
| CN106850414A (en) * | 2009-08-10 | 2017-06-13 | 高通股份有限公司 | Recognize the domain for transmitting message service information |
| US11622244B2 (en) | 2009-08-10 | 2023-04-04 | Qualcomm Incorporated | Domain selection for mobile-originated message service |
| CN102104862B (en) * | 2009-12-22 | 2014-03-12 | 华为技术有限公司 | Method, device and system for anchoring IP (Internet Protocol) multimedia subsystem by circuit switched domain (CS) |
| CN106330896A (en) * | 2011-08-19 | 2017-01-11 | 中兴通讯股份有限公司 | Method of processing SUB signaling |
| WO2016119218A1 (en) * | 2015-01-30 | 2016-08-04 | 华为技术有限公司 | Call supplementary service configuration synchronization method, apparatus and system |
| US10433214B2 (en) | 2015-01-30 | 2019-10-01 | Huawei Technologies Co., Ltd. | Synchronization method, apparatus, and system for call supplementary service configuration |
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| CN100551168C (en) | 2009-10-14 |
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