CN101159981B - Call routing establishment method, network element equipment and network system - Google Patents
Call routing establishment method, network element equipment and network system Download PDFInfo
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- CN101159981B CN101159981B CN 200710165512 CN200710165512A CN101159981B CN 101159981 B CN101159981 B CN 101159981B CN 200710165512 CN200710165512 CN 200710165512 CN 200710165512 A CN200710165512 A CN 200710165512A CN 101159981 B CN101159981 B CN 101159981B
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Abstract
The invention discloses an establishment method of call routing, which includes: a called terminal circuit domain network side receives relevant information of a calling request; the called terminal circuit domain network side acquires business status information of the called terminal and judges whether the called terminal performs business in EV-DO network, according to the business status information of the called terminal; if not, the called terminal circuit domain network side performs call routing for the called terminal in circuit domain directly; the called terminal business status information includes: information about whether the called terminal performs business in EV-DO network. At the same time, the invention also discloses a network element equipment and a network system. The technical proposal provided by the invention can reduce the call procedure change received by dual mode terminal from the circuit domain and quicken calling connection speed.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of call routing establishment method and network element device and network system.
Background technology
(Code Division Multiple Access, CDMA) network such as the 1X network, comprise circuit domain business (mainly being speech business) and data field business to traditional code division multiple access.Cdma network is in order to provide the data service of higher rate at data field, CDMA EV-DO (Code DivisionMultiple Access Evolution data Optimized) network has been proposed, be called for short the EV-DO network, the purpose at the beginning of the EV-DO network design is exclusively used in data service exactly.Speed raising along with data service, can provide speech business (VOIP at the EV-DO network based on data service, Voice over IP), generally be that (IP Multimedia Subsystem, IMS) territory provides by the IP Multimedia System in the EV-DO network.Promptly the business of carrying out at the EV-DO network comprises data service that the user carries out and the business of carrying out in the IMS territory, and speech business can be undertaken by the circuit domain in traditional 1X network, also can be undertaken by the IMS territory in the EV-DO network.
The structure of EV-DO network as shown in Figure 1, different with the 1X network architecture, the EV-DO network does not need (the Mobile Switch Center of mobile switching centre, MSC)/Visited Location Registor (VisitorLocation Register, VLR) and attaching position register (Home Location Register, HLR), mobile management is at Access Network (Access Network, AN) finish, access authentication is finished at AN AAA, EV-DO network and 1X network can shared packet switched data networks (Packet-switched DataNetwork, PDSN).
The dual-mode terminal of existence such as dual-mode handset, this dual-mode terminal has been registered and can have been carried out business at 1X network and EV-DO network, in order to realize that terminal can receive another ICQ when certain network carries out business, the IMS territory of prior art in the EV-DO networking increased application server for continuity of voice call (Voice Call Continuity Application Server, VCC AS), consult Fig. 2, the existing IMS territory is by CCF (Call Session Control Function, CSCF), MGCF (Media Gateway Control Function, MGCF), (HomeSubscriber Server HSS) waits functional entity to form to home signature user server.Prior art has increased VCC AS server (VCC Application Server) in the IMS territory at EV-DO networking, no matter the calling or the calling of circuit domain that are the IMS territory all will be passed through VCC AS, specific implementation is: calling terminal makes a call in circuit domain, the number of the number of calling terminal and terminal called is sent to the VCC AS of caller network side, the VCC AS of caller network side distributes an energy calling of calling terminal to be routed to the IMS routing number (IMS Routing Number) of this VCC AS, after originating switch MSC/VLR obtains this IMS routing number, route calls to the VCC AS of this caller network side by MGCF.The flow process of callee side is no matter terminal called is at the 1X network or at the EV-DO network, all routes calls to the VCC AS in the IMS territory of called network side earlier, is called out by the VCC AS decision of called network side and how to transfer.Wherein, the main effect of the VCC AS of called network side is: no matter terminal called is at the 1X network or the EV-DO network carries out call business, all the VCCAS of called network side is remained in the call path, so that the VCCAS of callee side knows the call state of terminal called, and the call status information of record terminal called, how the VCC AS of called network side calls out switching according to institute's ticket call state information decision, carry out call business if terminal called is current at the 1X network, calling is transferred to circuit domain carries out business.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
1, for the calling in circuit common territory, be that calling terminal makes a call in circuit domain, just carrying out business and terminal called is current in the circuit domain of callee side, need receive the calling of calling terminal in the circuit domain of callee side, the calling routing procedure of prior art is: by the circuit domain of the IMS territory-terminal called of the IMS territory-terminal called of the circuit domain-calling terminal of calling terminal, make the calling in circuit common territory increase the intermediate treatment link, call flow to original circuit domain changes very big, simultaneously, make the speed that continues of calling slack-off.
2, because the calling in circuit common territory all will be passed through the IMS territory, increased circuit domain to media delivery process and encoding and decoding conversion process between the IMS territory, reduced voice quality.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of method for building up, network element device and network system of calling out route, makes dual-mode terminal flow process when carrying out the calling of circuit domain change very little.
In view of this, the embodiment of the invention provides:
A kind of method for building up of calling out route comprises:
Terminal called circuit-domain network side joint is received the call request relevant information;
Described terminal called circuit-domain network side is obtained the business state information of terminal called, business state information according to described terminal called, judge whether described terminal called carries out business at Evolution-Data Optimized EV-DO network, if not, described terminal called circuit-domain network side is directly called out route in circuit domain to described terminal called, wherein, the business state information of described terminal called comprises: whether terminal called carries out professional information at described EV-DO network.
A kind of network element device comprises:
Receiving element is used to receive the request message that obtains the terminal called positional information;
The business state information acquiring unit is used to obtain the business state information of terminal called;
Judging unit, be used for after described receiving element receives the described request message that obtains the terminal called positional information, the business state information of the terminal called that obtains according to described business state information acquiring unit judges whether described terminal called carries out business at the EV-DO network; Wherein, the business state information of described terminal called comprises: whether terminal called carries out professional information at the EV-DO network;
First output unit, be used for when the judged result of described judging unit for not the time, export the interim local number of described terminal called, in circuit domain described terminal called is called out route according to the interim local number of described terminal called for gateway exchange or originating switch.
A kind of network element device comprises:
Receiving element is used to receive the initial address message of the interim local number that carries terminal called;
The business state information acquiring unit is used to obtain the business state information of terminal called;
Judging unit, be used for after described receiving element receives the initial address message of the described interim local number that carries terminal called, the business state information of the terminal called that obtains according to described business state information acquiring unit judges whether described terminal called carries out business at the EV-DO network;
Calling unit, be used for when the judged result of described judging unit for not the time, in circuit domain described terminal called is called out route according to the interim local number of described terminal called.
A kind of network system comprises: attaching position register HLR, and the location information management network element,
Described HLR, be used for after receiving the request message that obtains the terminal called positional information, obtain the business state information of described terminal called from described location information management network element, business state information according to described terminal called, judge whether described terminal called carries out business at the EV-DO network, if judged result is for denying, the interim local number of output terminal called is called out route in circuit domain to described terminal called according to the interim local number of described terminal called for gateway exchange or originating switch.
A technical scheme in the technique scheme has following beneficial effect:
The embodiment of the invention is by receiving the call request that calling terminal is initiated in circuit domain, the business state information of the terminal called of asking according to call request, judge whether terminal called carries out business at the EV-DO network, if terminal called does not carry out business at the EV-DO network, directly terminal called is called out route in circuit domain, make the call flow of common circuit domain not need circuit domain through the IMS territory-terminal called of the IMS territory-terminal called of the circuit domain-calling terminal of calling terminal, call flow change to original circuit domain is very little, and the speed of continuing of calling is accelerated.
Description of drawings
The EV-DO network structure that Fig. 1 provides for prior art;
IMS domain structure schematic diagram in the EV-DO network that Fig. 2 provides for prior art;
The method for building up flow chart of the calling route that Fig. 3 provides for the embodiment of the invention one;
The terminal called that Fig. 4 provides for the embodiment of the invention is notified the method flow diagram of VCCAS when the 1X network carries out business;
The terminal called that Fig. 5 provides for the embodiment of the invention is notified the method flow diagram of VCCAS when the EV-DO network carries out business;
The method for building up flow chart of the calling route that Fig. 6 provides for the embodiment of the invention two;
The terminal called that Fig. 7 provides for the embodiment of the invention is notified the method flow diagram of called end office when the EV-DO network carries out business;
The method for building up flow chart of the calling route that Fig. 8 provides for the embodiment of the invention three;
The network element device structure chart that Fig. 9 provides for the embodiment of the invention four;
The network element device structure chart that Figure 10 provides for the embodiment of the invention five;
The network architecture figure that Figure 11 provides for the embodiment of the invention six.
Embodiment
The embodiment of the invention provides a kind of method for building up of calling out route, comprising: terminal called circuit-domain network side joint is received the call request relevant information; Described terminal called circuit-domain network side is obtained the business state information of terminal called, business state information according to described terminal called, judge whether described terminal called carries out business at the EV-DO network, if not, described terminal called circuit-domain network side is directly called out route in circuit domain to described terminal called, wherein, the business state information of described terminal called comprises: whether terminal called carries out professional information at described EV-DO network.Use technical scheme of the present invention, make dual-mode terminal flow process when carrying out the calling of circuit domain change very little.
Consult Fig. 3, the embodiment of the invention one provides a kind of method for building up of calling out route, this method is in the call request of circuit domain reception from calling terminal, by attaching position register (the Home Location Register that terminal called belonged to, HLR) obtain the business state information of terminal called to VCC AS, HLR judges according to the business state information of terminal called whether terminal called carries out business at the EV-DO network, when terminal called does not carry out business at the EV-DO network, directly terminal called is called out route in circuit domain.This method specifically comprises:
Step 301, originating switch MSC/VLR or gateway exchange (Gateway Mobile SwitchingCenter, GMSC) receive that calling terminal is after the call request of circuit domain transmission, send the request message that obtains the terminal called positional information to the HLR that terminal called belonged to, this request message can use location request message LOCREQ.
Call out CDMA user for its net in this step, as PSTN (PublicSwitched Telephone Network, PSTN) user dials CDMA user, is that GMSC sends the request message that obtains the terminal called positional information to HLR; If call out, be that originating switch MSC/VLR sends the request message that obtains the terminal called positional information to HLR in this step at the CDMA Home Network.
After step 302, HLR receive LOCREQ, determine that according to the CAMEL-Subscription-Information of terminal called terminal called is the 1X/EV-DO dual-mode terminal, obtain the business state information of terminal called and the request message of IMS domain routing information to VCC AS transmission, this request message can be used route request information ROUTREQ.
After step 303, VCC AS receive ROUTREQ, return the route requests response message routreq of the business state information that carries terminal called to HLR.If terminal called carries out business at the EV-DO network, can in message, return IMS Routing Number.
The business state information of terminal called comprises: whether terminal called carries out professional information at the EV-DO network.
Step 304, HLR judge according to the business state information of terminal called whether terminal called carries out business at the EV-DO network, if carry out business at the EV-DO network, and execution in step 305; If terminal called does not carry out business at the EV-DO network, execution in step 307.
Step 305, HLR obtain IMS Routing Number from VCC AS, return the position request response message locreq that carries IMS Routing Number to GMSC or originating switch MSC/VLR.
If carried IMS Routing Number among the response message routreq in the step 303, just do not need from VCC AS, to obtain IMS Routing Number in this step, and the locreq that directly will carry IMSRouting Number issues GMSC or caller MSC/VLR.
Step 306, GMSC or originating switch MSC/VLR analyze IMS Routing Number, send the initial address message IAM that carries IMS Routing Number to MGCF, MGCF is routed to VCC AS with call request with notice, calling is transferred to the IMS territory carries out process ends.
Step 307, HLR send a route request information ROUTREQ to called end office MSC/VLR;
Step 308, called end office MSC/VLR are that terminal called distributes the interim local number (TemporaryLocal Directory Number TLDN), and returns the route requests response message routreq that carries TLDN to HLR.
Step 309, HLR return the position request response message locreq that carries the TLDN number to GMSC or originating switch MSC/VLR.
Step 310, GMSC or originating switch MSC/VLR analyze the TLDN number, send the initial address message IAM that carries this TLDN number to called end office MSC/VLR, finish calling procedure in circuit domain.
Wherein, VCC AS not only carries the business state information of terminal called in the step 303 in the response message routreq that HLR returns, and can also carry IMS Routing Number.HLR judges that obtaining terminal called carries out business at the EV-DO network, and has carried IMS Routing Number among the route requests response message routreq, just directly returns IMS RoutingNumber with position request response message locreq.HLR judges that obtaining terminal called carries out business at the EV-DO network, but does not carry IMS Routing Number among the route requests response message routreq, then sends out message again and obtains IMS Routing Number to VCC AS.Certainly, HLR also can obtain the terminal called business state information from VCC AS with other message, sends analytical information ANLYZD such as HLR to VCC AS, and VCC AS returns analyzing responding information anlyzd, the wherein business state information of carried terminal.
VCC AS in the embodiment of the invention one is known the business state information of terminal called, so that return the routreq of the business state information that carries terminal called to HLR in step 303.The business state information of terminal called comprises: whether terminal called carries out professional information at the EV-DO network; The business state information of this terminal called also comprises: whether terminal called carries out professional information at the 1X network.Wherein, VCC AS knows that the mode of the business state information of terminal called is: when terminal is carried out business at the 1X network, by the business state information of the MSC/VLR of end office (EO) notice VCC AS terminal; When terminal is carried out business at the EV-DO network, by Access Network (Access Network, the AN) business state information of the MSC/VLR of the end office (EO) terminal in the notice 1X network, and by the MSC/VLR of end office (EO) notice VCC AS.In existing communication process, when terminal is carried out business at the 1X network, message flow all will pass through the MSC/VLR of end office (EO), the MSC/VLR of end office (EO) increases following processing in original flow process: the MSC/VLR of end office (EO) is knowing that terminal begins or during winding-up, this terminal of notice VCC AS begins or winding-up at the 1X network at the 1X network.
Certainly, HLR judges whether terminal carries out business at the EV-DO network, if terminal is carried out business at the EV-DO network, then calling is transferred to the IMS territory here, otherwise continues to finish calling in circuit domain.Here the MSC/VLR of end office (EO) also notifies VCC AS terminal at the service condition of 1X network, for the calling in IMS territory, can judge whether that calling is transferred to circuit domain to be carried out by VCC AS like this.
When terminal called carries out business at the 1X network, notify the specific implementation process of VCC AS to be by the MSC/VLR of end office (EO):
When step 401, terminal began data service or speech business at the 1X network, the MSC/VLR of end office (EO) sent a notification message to VCC AS, and this notification message comprises: the 1X Network begins to identify, the 1X network information of terminal carrying out service, business option; This notification message can use the point-to-point short message SMDPP that sends a request message.
After step 402, VCC AS received above-mentioned notification message, the record terminal was carried out professional business state information as terminal called at the 1X network, and sent point-to-point short message transmission response message smdpp to the MSC/VLR of end office (EO).
Step 403, terminal are when 1X network end data business or speech business, and MSC/VLR sends a notification message to VCC AS, and this notification message comprises: the 1X Network finishes sign, the 1X network information of terminal carrying out service, business option; This notification message can adopt the point-to-point short message SMDPP that sends a request message.
Behind step 404, the notification message of VCC AS in receiving step 403, the record terminal is not carried out professional business state information as terminal called at the 1X network, and sends point-to-point short message transmission response message smdpp to the MSC/VLR of end office (EO).
When terminal is carried out business at the EV-DO network, carry out business at the EV-DO network, and be by the specific implementation process of the MSC/VLR of end office (EO) notice VCC AS by this terminal of the MSC/VLR of end office (EO) in the AN notice 1X network:
When step 501, terminal began to carry out data service or speech business at the EV-DO network, AN sent event notification message Event Notification to the MSC/VLR of end office (EO), and this message comprises: AN sign, EV-DO Network begin sign and business option.
Step 502, the MSC/VLR of end office (EO) send professional beginning notification message to VCC AS, this business begins notification message and comprises: the EV-DO Network begins to identify, the EV-DO network information of terminal carrying out service, business option, and this notification message can be the point-to-point short message SMDPP that sends a request message.
Step 503, VCC AS begin notification message according to this business, and the record terminal called carries out professional business state information as terminal called at the EV-DO network, and send point-to-point short message transmission response message smdpp to the MSC/VLR of end office (EO).
When step 504, terminal finish speech business such as the data service carried out or VOIP at the EV-DO network, AN sends event notification message Event Notification to the MSC/VLR of end office (EO), and this message comprises: AN sign, EV-DO Network finish sign and business option.
Step 505, the MSC/VLR of end office (EO) send the service ending notification message to VCC AS, and this message comprises: the EV-DO Network finishes sign, the EV-DO network information of terminal carrying out service, business option.Above-mentioned service ending notification message can use point-to-point short message SMDPP.
Step 506, VCC AS are according to this service ending notification message, and the record terminal called does not carry out professional business state information as terminal called at the EV-DO network, and send point-to-point short message transmission response message smdpp to the MSC/VLR of end office (EO).
Wherein, the address of the VCC AS that terminal belonged to can obtain by the location registers flow process, and in the registering flow path of position, HLR sends to the MSC/VLR of end office (EO) with the address of the VCC AS that terminal belonged to, the address of the MSC/VLR of the end office (EO) record VCCAS that terminal belonged to.
Consult Fig. 6, the embodiment of the invention two provides a kind of method of calling out route, this method is in the call request of circuit domain reception from calling terminal, judge according to the business state information of terminal called whether terminal called carries out business at the EV-DO network by called end office MSC/VLR, when terminal called does not carry out business at the EV-DO network, directly described terminal called is called out route in circuit domain.This method specifically comprises:
Step 601, originating switch MSC/VLR or gateway exchange GMSC receive that calling terminal is after the call request of circuit domain transmission, send the request message of the positional information of obtaining terminal called to the HLR of terminal called ownership, this HLR obtains the TLDN number and sends to originating switch MSC/VLR or gateway exchange GMSC to called end office MSC/VLR, and originating switch MSC/VLR or gateway exchange GMSC send the initial address message IAM that carries the TLDN number to called end office MSC/VLR.
Step 602, called end office MSC/VLR judge according to the business state information of terminal called whether terminal called carries out business at the EV-DO network, if carry out business at the EV-DO network, and execution in step 603; If do not carry out business at the EV-DO network, according to the TLDN number, continue by the normal call mode, finish call flow in circuit domain.
Step 603, called end office MSC/VLR send the call routing information of message request terminal called in the IMS territory to VCC AS;
Step 604, VCC AS return IMS Routing Number to called end office MSC/VLR.
Step 605, called end office MSC/VLR analyze the IMS Routing Number that VCC AS returns, and send the IAM message of carrying IMS Routing Number to MGCF, by MGCF call request are routed to IMS.
Terminal is when the EV-DO network, and by the business state information of the MSC/VLR of the end office (EO) terminal in the AN notice 1X network, the specific implementation process is:
When step 701, terminal begin to carry out data service or speech business at the EV-DO network, AN sends event notification message Event Notification to the MSC/VLR of end office (EO), this message comprises: AN sign, EV-DO Network begin sign and business option, and this called end office carries out professional business state information as terminal called according to above-mentioned notification message record terminal called at the EV-DO network.
When step 702, terminal finish speech business such as the data service carried out or VOIP at the EV-DO network, AN sends event notification message Event Notification message to the MSC/VLR of end office (EO), this message comprises: AN sign, EV-DO Network finish sign and business option, and described called end office does not carry out professional business state information as terminal called at the EV-DO network according to this notification message record terminal called.
Consult Fig. 8, the embodiment of the invention three provides a kind of method of calling out route, HLR obtains the business state information of terminal called in this method to called end office, HLR judges according to the business state information of terminal called whether terminal called carries out business at the EV-DO network, when terminal called does not carry out business at the EV-DO network, directly terminal called is called out route in circuit domain.This method specifically comprises:
Step 801, originating switch MSC/VLR or gateway exchange GMSC send the request message that obtains the terminal called positional information to the called HLR that belongs to, and this request message can use location request message LOCREQ;
Step 802, HLR send the route request information ROUTREQ that obtains the TLDN number to called end office MSC/VLR;
Step 803, called end office MSC/VLR send route requests response message routreq to HLR, carry the terminal called business state information in this message;
In this step, carry out professional situation for terminal called at the EV-DO network, called end office MSC/VLR can not distribute the TLDN number, and can not carry the TLDN number this moment in routreq message.
Step 804, HLR judge according to the terminal called business state information whether terminal called carries out business at the EV-DO network, if carry out business at the EV-DO network, and execution in step 805; If do not carry out business at the EV-DO network, execution in step 809;
Step 805, HLR send the call routing information of message request terminal called in the IMS territory to VCC AS;
Step 806, VCC AS return IMS Routing Number to HLR.
Step 807, HLR return the message position request response locreq that carries IMS RoutingNumber to GMSC or originating switch MSC/VLR.
Step 808, GMSC or originating switch MSC/VLR analyze IMS Routing Number, send the initial address message IAM that carries IMS Routing Number to MGCF, MGCF is routed to VCC AS with call request with notice, calling is transferred to the IMS territory carries out process ends.
Step 809, HLR return the position request response message locreq that carries the TLDN number to GMSC or originating switch MSC/VLR.
Step 810, GMSC or originating switch MSC/VLR analyze the TLDN number, send the initial address message IAM that carries this TLDN number to called end office MSC/VLR, finish calling procedure in circuit domain.
When above-mentioned terminal called carried out business network at EV-DO, by the business state information of this terminal called of called end office MSC/VLR in the AN notice 1X network, the specific implementation process was with step 701-step 702.
Calling for the IMS territory is consistent with prior protocols, and calling out needs the AS through VCC, judges that by VCC AS terminal called is to carry out business or carry out business at the 1X network at the EV-DO network, but need be terminal called at the service condition notice VCC of 1X network AS.Concrete notification procedure is consulted Fig. 4.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, for example, read-only memory, disk or CD etc.
Consult Fig. 9, the embodiment of the invention four provides a kind of network element device, and this network element device can be positioned at HLR, and this network element device comprises:
Receiving element 901 receives the request message that obtains the terminal called positional information;
Business state information acquiring unit 902 obtains the business state information of terminal called, and the business state information of terminal called comprises: whether terminal called carries out professional information at the EV-DO network;
Judging unit 903 after receiving the request message that obtains the terminal called positional information, according to the business state information of terminal called, judges whether described terminal called carries out business at the EV-DO network;
This network element device also comprises: IMS routing number information acquisition unit 905, the second output units 906,
IMS routing number information acquisition unit 905, when the judged result of judging unit 903 when being, obtain IMS routing number information from VCC AS;
Consult Figure 10, the embodiment of the invention five provides a kind of network element device, and this network element device can be positioned at called end office, and this network element device comprises:
Receiving element 1001, the initial address message of the interim local number of terminal called is carried in reception;
Business state information acquiring unit 1002 obtains the business state information of terminal called, and the business state information of terminal called comprises: whether terminal called carries out professional information at the EV-DO network;
Judging unit 1003 behind the initial address message that receives the interim local number that carries terminal called, according to the business state information of terminal called, judges whether terminal called carries out business at the EV-DO network;
Calling unit 1004, when the judged result of judging unit 1003 for not the time, in circuit domain terminal called is called out route according to the interim local number of terminal called.
This comprises described network element device: IMS routing number information acquisition unit 1005, the second output units 1006,
IMS routing number information acquisition unit 1005, when the judged result of judging unit 1003 when being, obtain described IMS routing number information from VCCAS;
Consult Figure 11, the embodiment of the invention six provides a kind of network system, comprising: attaching position register HLR, and the location information management network element, wherein, described location information management network element is VCC AS or called end office,
HLR, be used to receive the request message that obtains the terminal called positional information, obtain the business state information of described terminal called from described location information management network element, business state information according to described terminal called, judge whether described terminal called carries out business at the EV-DO network, if judged result is exported the interim local number of terminal called for not, in circuit domain described terminal called is called out route according to the interim local number of described terminal called for gateway exchange or originating switch.
Concrete, described HLR, also be used for when terminal called when the EV-DO network carries out business, from VCC AS obtain IMS routing number information and output, according to described IMS routing number information, described terminal called is called out route for described gateway exchange or originating switch in the IMS territory.
As seen from the above analysis, the embodiment of the invention has following beneficial effect:
1, the embodiment of the invention is by receiving the call request that calling terminal is initiated in circuit domain, the business state information of the terminal called of asking according to call request, judge whether terminal called carries out business at the EV-DO network, if terminal called does not carry out business at the EV-DO network, directly terminal called is called out route in circuit domain, make the call flow of common circuit domain not need circuit domain through the IMS territory-terminal called of the IMS territory-terminal called of the circuit domain-calling terminal of calling terminal, call flow change to original circuit domain is very little, and the speed of continuing of calling is accelerated.
2, the embodiment of the invention is by receiving the call request from calling terminal in circuit domain, judge whether terminal called carries out business at the EV-DO network, if terminal called is not when the EV-DO network carries out business, directly terminal called is called out route in circuit domain, make calling not need to have guaranteed voice quality through the encoding and decoding conversion between circuit domain and IMS territory and in the transmission in IMS territory.
3, the embodiment of the invention is according to the business state information of terminal called, judge whether terminal called carries out business at the EV-DO network, because the business state information of terminal called comprises: whether terminal called carries out business (comprising data service and/or speech business) and whether terminal called carries out business (comprising data service and/or speech business) at the 1X network at the EV-DO network.Thereby, when terminal called carries out data service or when the EV-DO network carries out data service, also can route the call to the current network that carries out data service of terminal called according to the business state information of terminal called at the 1X network.
More than a kind of method for building up, network element device and network system of calling out route provided by the present invention is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. a method for building up of calling out route is characterized in that, comprising:
Terminal called circuit-domain network side joint is received the call request relevant information;
Described terminal called circuit-domain network side is obtained the business state information of terminal called, business state information according to described terminal called, judge whether described terminal called carries out business at Evolution-Data Optimized EV-DO network, if not, described terminal called circuit-domain network side is directly called out route in circuit domain to described terminal called, if, then calling is transferred to the IMS territory, wherein, the business state information of described terminal called comprises: whether terminal called carries out professional information at described EV-DO network.
2. method according to claim 1 is characterized in that:
The mode that described terminal called circuit-domain network side joint is received the call request relevant information is specially:
The attaching position register HLR that described terminal called belonged to receives the request message that obtains the terminal called positional information;
Described terminal called circuit-domain network side is obtained the business state information of terminal called, according to the business state information of described terminal called, judges whether described terminal called carries out business at the EV-DO network and be specially:
Described HLR obtains the business state information of terminal called, according to the business state information of described terminal called, judges whether described terminal called carries out business at the EV-DO network.
3. method according to claim 2 is characterized in that:
The mode that described HLR obtains the business state information of described terminal called is specially:
Described HLR obtains the business state information of described terminal called from the application server for continuity of voice call VCC AS of called network side.
4. method according to claim 3 is characterized in that:
Before described HLR obtained the business state information of described terminal called from described VCC AS, this method also comprised:
When called end office receive that Access Network AN sends carry the notification message that AN sign, EV-DO Network begin to identify after, send professional beginning notification message to described VCC AS, described professional beginning notification message carries terminal called to carry out professional the EV-DO network information, EV-DO Network and begins sign; Described VCC AS is according to described professional beginning notification message, and the record terminal called carries out professional business state information as terminal called at the EV-DO network;
Receive the notification message that carries AN sign, EV-DO Network end sign of AN transmission when called end office after, send the service ending notification message that carries EV-DO Network end sign to VCC AS; Described VCC AS is according to described service ending notification message, and the record terminal called does not carry out professional business state information as terminal called at the EV-DO network.
5. method according to claim 4 is characterized in that:
This method also comprises:
Described HLR sends the address of the VCC AS that described terminal called belongs to described called end office;
Described called end office is specially to the mode that VCC AS sends described professional beginning notification message or service ending notification message:
Described called end office sends described professional beginning notification message or described service ending notification message according to described VCC AS address to described VCC AS.
6. method according to claim 2 is characterized in that:
The mode that described HLR obtains the business state information of described terminal called is specially:
Described HLR obtains the business state information of described terminal called from called end office.
7. method according to claim 1 is characterized in that:
The mode that described terminal called circuit-domain network side joint is received the call request relevant information is specially:
Called end office receives initial address message;
Described terminal called circuit-domain network side is obtained the business state information of terminal called, according to the business state information of described terminal called, judges whether described terminal called carries out business at the EV-DO network and be specially:
Described called end office obtains the business state information of terminal called, according to the business state information of described terminal called, judges whether described terminal called carries out business at the EV-DO network.
8. according to claim 6 or 7 described methods, it is characterized in that:
This method also comprises:
When called end office receive that AN sends carry the notification message that AN sign, EV-DO Network begin to identify the time, according to the notification message that the described AN of carrying sign, EV-DO Network begin to identify, the record terminal called carries out professional business state information as terminal called at the EV-DO network;
When called end office receive that AN sends carry the AN sign, when the EV-DO Network finishes the notification message of sign, finish sign according to described EV-DO Network, the record terminal called does not carry out professional business state information as terminal called at the EV-DO network.
9. method according to claim 1 is characterized in that:
Describedly calling be transferred to the IMS territory comprise:
Obtain the IP Multimedia System IMS routing number information of described terminal called from VCC AS, and send the message of carrying IMS routing number information, in the IMS territory described terminal called is called out route by described MGCF to MGCF MGCF.
10. a network element device is characterized in that, comprising:
Receiving element is used to receive the request message that obtains the terminal called positional information;
The business state information acquiring unit is used to obtain the business state information of terminal called;
Judging unit, be used for after described receiving element receives the described request message that obtains the terminal called positional information, the business state information of the terminal called that obtains according to described business state information acquiring unit judges whether described terminal called carries out business at the EV-DO network; Wherein, the business state information of described terminal called comprises: whether terminal called carries out professional information at the EV-DO network;
First output unit, be used for when the judged result of described judging unit for not the time, export the interim local number of described terminal called, in circuit domain described terminal called is called out route according to the interim local number of described terminal called for gateway exchange or originating switch;
IMS routing number information acquisition unit, be used for when the judged result of described judging unit when being, obtain IMS routing number information from VCC AS;
Second output unit is used to export described IMS routing number information, according to described IMS routing number information, in the IMS territory described terminal called is called out route for MGCF.
11. a network element device is characterized in that, comprising:
Receiving element is used to receive the initial address message of the interim local number that carries terminal called;
The business state information acquiring unit is used to obtain the business state information of terminal called;
Judging unit, be used for after described receiving element receives the initial address message of the described interim local number that carries terminal called, the business state information of the terminal called that obtains according to described business state information acquiring unit judges whether described terminal called carries out business at the EV-DO network;
Calling unit, be used for when the judged result of described judging unit for not the time, in circuit domain described terminal called is called out route according to the interim local number of described terminal called;
IMS routing number information acquisition unit, be used for when the judged result of described judging unit when being, obtain IMS routing number information from VCC AS;
Second output unit is used for exporting described IMS routing number information to MGCF, according to described IMS routing number information, in the IMS territory described terminal called is called out route for MGCF.
12. a network system is characterized in that, comprising: attaching position register HLR, the location information management network element,
Described HLR, be used for after receiving the request message that obtains the terminal called positional information, obtain the business state information of described terminal called from described location information management network element, business state information according to described terminal called, judge whether described terminal called carries out business at the EV-DO network, if judged result is for denying, the interim local number of output terminal called, in circuit domain described terminal called is called out route according to the interim local number of described terminal called for gateway exchange or originating switch, if then calling is transferred to the IMS territory.
13. network system according to claim 12 is characterized in that:
Described location information management network element is VCC AS or called end office.
14., it is characterized in that according to claim 12 or 13 described network systems:
Calling is transferred to the IMS territory to be comprised:
When terminal called when the EV-DO network carries out business, obtain IMS routing number information and output, according to described IMS routing number information, described terminal called is called out route for MGCF in the IMS territory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710165512 CN101159981B (en) | 2007-10-26 | 2007-10-26 | Call routing establishment method, network element equipment and network system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710165512 CN101159981B (en) | 2007-10-26 | 2007-10-26 | Call routing establishment method, network element equipment and network system |
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| Publication Number | Publication Date |
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| CN101159981A CN101159981A (en) | 2008-04-09 |
| CN101159981B true CN101159981B (en) | 2011-06-08 |
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| CN 200710165512 Expired - Fee Related CN101159981B (en) | 2007-10-26 | 2007-10-26 | Call routing establishment method, network element equipment and network system |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374356B (en) * | 2008-10-15 | 2012-02-15 | 中兴通讯股份有限公司 | Method for switching VoIP in IMS domain, IMS system, terminal and VCC application server |
| CN101835240B (en) * | 2010-05-12 | 2012-07-11 | 华为技术有限公司 | Call routing method, mobile switching centre and call routing system |
| US9143447B2 (en) | 2010-11-18 | 2015-09-22 | Nec Corporation | Closed loop formation preventing system and closed loop formation preventing method |
| CN102612141B (en) * | 2011-01-19 | 2017-06-13 | 中兴通讯股份有限公司 | Mobile switching centre obtains the method and system of IMS control point information |
| CN103188756B (en) * | 2011-12-28 | 2016-03-30 | 中国移动通信集团吉林有限公司 | A kind of cross-domain service method for routing, device, system and relevant device |
| CN103619006B (en) * | 2013-11-26 | 2017-04-26 | 中国联合网络通信集团有限公司 | Method and system for achieving voice call service |
| CN103686694B (en) * | 2013-12-26 | 2017-09-29 | 华为技术有限公司 | Status information acquiring method, service control point and server |
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| CN1852269A (en) * | 2005-06-18 | 2006-10-25 | 华为技术有限公司 | Method for realizing two-directional interacting of circuit zone and grouping zone, and system therefor |
| CN1870777A (en) * | 2006-03-08 | 2006-11-29 | 华为技术有限公司 | Method, network and equipment for selecting called route |
| CN1984484A (en) * | 2006-06-07 | 2007-06-20 | 华为技术有限公司 | Method for calling double-mode terminal |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852269A (en) * | 2005-06-18 | 2006-10-25 | 华为技术有限公司 | Method for realizing two-directional interacting of circuit zone and grouping zone, and system therefor |
| CN1870777A (en) * | 2006-03-08 | 2006-11-29 | 华为技术有限公司 | Method, network and equipment for selecting called route |
| CN1984484A (en) * | 2006-06-07 | 2007-06-20 | 华为技术有限公司 | Method for calling double-mode terminal |
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| CN101159981A (en) | 2008-04-09 |
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