CN101132555B - Method for non-IMS centralized business user obtaining roaming number - Google Patents
Method for non-IMS centralized business user obtaining roaming number Download PDFInfo
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- CN101132555B CN101132555B CN2007101513141A CN200710151314A CN101132555B CN 101132555 B CN101132555 B CN 101132555B CN 2007101513141 A CN2007101513141 A CN 2007101513141A CN 200710151314 A CN200710151314 A CN 200710151314A CN 101132555 B CN101132555 B CN 101132555B
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Abstract
This invention puts forward a method for getting roam number by users of non-centralized IMS service including: Step S302, a control function entity of the IMS circuit domain receives a request to a called party by a calling party and starts up a request of getting roam number to an adaptive function entity accessed to the local circuit domain by a session control path; Step S304, the adaptive function entity of the local circuit domain receives the request, it maps the request to a roam number request message and sends it to an access mobile exchange center/access location register NE; Step S306, the NE distributes roam number and feeds it back to the control function entity of the IMS domain according to the original way, which sets up connection with the called party in terms of the roam number. According to the invention, the complete procedure of calling non ICS UE, furthermore, the crucial process of obtaining the roam number by the ICCF can be solved.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method that a kind of non-IMS centralized traffic user obtains roaming number.
Background technology
IP (network interconnection agreement, Internet Protocol, be called for short IP) IP multimedia subsystem, IMS (IP Multimedia Core Network Subsystem, be called for short IMS) be by third generation partner program (3rd Generation Partnership Project, abbreviation 3GPP) a kind of IP-based network framework that proposes, it has made up an opening and service environment flexibly, supports multimedia application, and provides abundant multimedia service for the user.
IMS is based on the communication network framework of IP, irrelevant with access technology, except being GPRS (General Packet Radio Service, GPRS), WLAN (Wireless Local Area Network, WLAN (wireless local area network)) etc. packet access network provides outside the business, can also be GSM (Global System for Mobile communications, global system for mobile communications), UMTS mobile cellular networks such as (Universal Mobile TelecommunicationsSystem, unified mobile communcations systems) provides professional.
Mobile cellular network such as GSM, UMTS adopts circuit-switched technology, is called circuit (Circuit Switched is called for short CS) territory, can provide basic speech business for the user, and based on the supplementary service of speech business.When IMS was inserted in the CS territory, it developed into a kind of access way, and business provides by IMS is unified fully, and this technology is called IMS centralized traffic (IMS Centralized Service is called for short ICS).
The IMS centralized traffic has the following advantages:
(1) IMS provides consistent business for access waies such as circuit domain, packet domain, and network enabled merges;
(2) support the CS network to the evolution of IMS network;
(3) not only support to have ICS ability subscriber equipment, also support the existing subscriber equipment that does not possess the ICS ability.
Fig. 1 is the Organization Chart of IMS centralized control business, following network element is arranged: user terminal (User Equipment, be called for short UE) 102, adaption function-network side (Local CS Access Adaptation Function-network equivalent is inserted in the local circuit territory, be called for short L-CAAF-n) 104, Visited Mobile Switching Center/VLR Visitor Location Register (Visited MobileSwitch Center/Visitor Location Register, be called for short VMSC/VLR) 106, home subscriber server (Home Subscriber Server, be called for short HSS) 108, MGCF (Media Gateway Control Function, be called for short MGCF) 110, media gateway (Media Gateway, be called for short MGW) 112, IMS circuit domain control function (IMS CS Control Function, be called for short ICCF) 114, CSCF (CallSession Control Function is called for short CSCF) 116.Two class subscriber equipmenies (UserEquipment, be called for short UE) are arranged: support the UE (being called for short ICS UE) of ICS ability and do not support the UE (abbreviation non ICS UE) of ICS ability.
Network side increases by 2 entities, is respectively that circuit domain inserts adaption function (CS AccessAdaptation Function is called for short CAAF) and remote subscriber agency (Remote UserAgent is called for short RUA).
CAAF can be divided into the remote circuitry territory and insert adaption function (Remote CS AccessAdaptation Function is called for short R-CAAF) and local circuit territory access adaption function (Local CS Access Adaptation Function is called for short L-CAAF).For ICSUE, L-CAAF is integrated among the ICS UE, and for non ICS UE, L-CAAF is arranged in VMSC/VLR or L-CAAF separates with VMSC/VLR, between UE and VMSC/VLR, is called L-CAAF-n.R-CAAF is positioned at home network and RUA forms ICCF jointly, calls out the access point that inserts IMS as the CS territory.
RUA is a sip user agent, represents UE to insert the IMS network.CAAF is the adaption function of business control signaling between CS territory and the IMS, transport service control signaling between CS territory UE and RUA, and RUA utilizes the information foundation and the control IMS session of obtaining from CAAF.
Mode is set up in the session control path dual mode:
1, unstructured supplementary service data (Unstructured Supplementary Service Data is called for short USSD) is adopted in the CS session control path on the carrying CS, and UE 102 arrives ICCF 114 by L-CAAF-n 104 and HSS 108;
2, adopt the SIP session control path of session initiation protocol signaling (Session Initial Protocol is called for short SIP) mode, directly arrive L-CAAF-n 104 by ICCF114.
Carrying control path UE adopts the CS control signaling of standard to insert L-CAAF-n 104 and VMSC/VLR 106, and be linked into the IMS territory by MGCF 110, VMSC/VLR106 is by integrated digital service-user part signaling (ISDN User Part, be called for short ISUP) to MGCF 110, and then by SIP signaling process CSCF 116 arrival ICCF 114;
Bearer path is set up by MGW 112.
Session information is transmitted in the session control path between UE 102 and ICCF 114, and the CS control signaling of standard and the carrying control messages between SIP signaling transmission CS territory and the IMS territory are passed through in carrying control path, and these two control paths are associated at ICCF 114 at last.This function just is equivalent to the sip user agent function that UE sets up the IMS session.The foundation of bearer path and the management of bearing resource are also being controlled in carrying control path.
Fig. 2 exhales flow process the end of existing scheme.Idiographic flow is as follows:
S202, CSCF receive the called request message of Calling Side.
S204, ICCF receive from CSCF and pass the called request message of coming.
S206, ICCF obtain called roaming number.
S208, ICCF has a called request by USSD notice L-CAAF-n, and HSS is passed through in this path.
S210, ICCF utilize the roaming number that obtains to be routed to MGCF through CSCF.
S212, MGCF send out the initial address message of ISUP to VMSC/VLR.
S214, VMSC/VLR initiates called foundation by L-CAAF-n to UE.
S216, UE sends out response message by L-CAAF-n to VMSC/VLR.
S218, VMSC/VLR sends out response message to MGCF.
S220, MGCF by CSCF to ICCF loopback SIP success response message.
S222, ICCF is to CSCF loopback SIP success response message.
S224, CSCF enters conversation state to Calling Side loopback SIP success response message.
The method that the tradition gateway exchange obtains roaming is: gateway exchange is initiated route requests to attaching position register, carry called number in the route requests, attaching position register is initiated the roaming number request to VLR Visitor Location Register then, the roaming number request message carries called international mobile subscriber identity (International Mobile Subscriber IdentificationNumber, be called for short IMSI), VLR Visitor Location Register distributes a roaming number, be transmitted back to gateway exchange according to former road, gateway exchange is routed to VMSC/VLR according to the roaming number that obtains again then, initiates called flow by VMSC/VLR.
Existing ICS realizes in the called service, obtaining the roaming number technology remains further to be studied, if adopt traditional technology, other functions in the route requests of attaching position register, as called intelligent service, and obtaining the roaming failure, attaching position register will issue called subscriber's supplementary service, as the preceding commentaries on classics of shutting down.This will increase the complexity of ICCF, also will influence the control of IMS centralized traffic.
Summary of the invention
One or more problems in view of the above the present invention proposes the method that a kind of non-IMS centralized traffic user obtains roaming number, can realize that non ICS UE realizes called complete procedure, and solve the critical process that ICCF obtains roaming number.
The method that non-IMS centralized traffic user according to the present invention obtains roaming number may further comprise the steps: step S302, IMS circuit domain control function entity receive caller to called request message after, insert the adaption function entity by the session control path to the local circuit territory and initiate the request of obtaining roaming number; Step S304 after local circuit territory access adaption function entity receives the request of obtaining roaming number, is mapped as request the roaming number request message and is sent to Visited Mobile Switching Center/VLR Visitor Location Register network element; And step S306, Visited Mobile Switching Center/VLR Visitor Location Register network element distributes roaming number and according to former road the roaming number that is distributed is fed back to IMS circuit domain control function entity, and IMS circuit domain control function entity is set up and called being connected according to the roaming number that obtains.
Wherein, in step S302, IMS circuit domain control function entity can insert the adaption function entity to the local circuit territory and initiate the unstructured supplementary service data route request information, and the unstructured supplementary service data route request information carries called number.
Described IMS circuit domain control function entity inserts the adaption function entity to described local circuit territory and initiates the initial session protocol request message, and described initial session protocol request message carries called number.
Alternatively, in step S302, IMS circuit domain control function entity inserts the adaption function entity to the local circuit territory and initiates unstructured supplementary service data roaming number request message, and unstructured supplementary service data roaming number request message carries called subscriber's IMSI International Mobile Subscriber Identity identification code.
In step S302, IMS circuit domain control function entity also can insert the adaption function entity to the local circuit territory and initiate the initial session protocol request message, and the initial session protocol request message carries called subscriber's IMSI International Mobile Subscriber Identity identification code.
Wherein, in step S304, insert the adaption function entity in the local circuit territory and be positioned under the situation of Visited Mobile Switching Center/VLR Visitor Location Register network element, the roam-request messages that local circuit territory access adaption function entity sends to Visited Mobile Switching Center/VLR Visitor Location Register network element is inside story.
Wherein, in step S304, inserting the adaption function entity in the local circuit territory is positioned under the situation of Visited Mobile Switching Center/VLR Visitor Location Register network element outside, the roam-request messages that local circuit territory access adaption function entity sends to Visited Mobile Switching Center/VLR Visitor Location Register network element is outside MAP message, and outside MAP message carries called subscriber's IMSI International Mobile Subscriber Identity identification code.
Wherein, in step S306, after Visited Mobile Switching Center/the VLR Visitor Location Register network element obtains roaming number, roaming number is sent to IMS circuit domain control function entity by the session control path.
Wherein, in step S302 and step S306, the session control path arrives the local circuit territory from IMS circuit domain control function entity through home subscriber server and inserts the adaption function entity.
By method of the present invention, realized that non-ICS UE realizes called complete procedure, solved the critical process that ICCF obtains roaming number.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is to be the block diagram of a kind of system configuration of IMS centralized control business;
The flow chart that Fig. 2 exhaled for the end of prior art IMS centralized control business;
Fig. 3 obtains the flow chart of the method for roaming number for non-IMS centralized traffic user according to the present invention;
Fig. 4 obtains the flow chart of the embodiment one of roaming number for ICCF according to the present invention;
Fig. 5 obtains the flow chart of the embodiment two of roaming number for ICCF according to the present invention; And
Fig. 6 obtains the flow chart of the embodiment three of roaming number for ICCF according to the present invention.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
The present invention be ICCF when obtaining roaming number, avoid attaching position register, in the VLR Visitor Location Register network element, obtain roaming number by the session control path.
Fig. 3 obtains the flow chart of the method for roaming number for non-IMS centralized traffic user according to the present invention.As shown in Figure 3, this method may further comprise the steps:
After S302, ICCF receive called request, initiate the request obtain roaming number to L-CAAF-n by the session control path.
After S304, L-CAAF-n receive above-mentioned request, it is mapped as the roaming number request message, this message is sent to VMSC/VLR.
S306, VMSC/VLR will distribute a roaming number to give ICCF according to the loopback of former road, and ICCF sets up called according to the roaming number that obtains.
Wherein, in step S302, ICCF initiates the USSD route request information to L-CAAF-n, and described message is carried called number; ICCF also can initiate USSD roaming number request message to L-CAAF-n, and described message is carried called subscriber's IMSI.
Wherein, in step S304, when L-CAAF-n is positioned at VMSC/VLR, the roam-request messages that L-CAAF-n sends to VMSC/VLR is inside story, otherwise be outside MAP (Mobile Application Part is called for short MAP) message, described message is carried called subscriber IMSI.
Wherein, in step S306, after VMSC/VLR obtains roaming number, roaming number is returned to L-CAAF-n, L-CAAF-n sends to ICCF by the session control path with roaming number, and ICCF sets up called according to roaming number.
Wherein, the session control path in step S302 and step S306 arrives L-CAAF-n by ICCF by HSS.
Core concept of the present invention is: ICCF initiates to obtain the message of roaming number request by the session control path to L-CAAF-n, L-CAAF-n is again to VMSC/VLR request roaming number, distribute roaming number to return to ICCF by VMSC/VLR, wherein comprise two kinds of implementations:
Mode one comprises the steps:
Steps A 1, ICCF initiates the USSD route requests by the session control path to L-CAAF-n after receiving called request, and described message is carried called number.
Steps A 2, L-CAAF initiates the roaming number request message to VMSC/VLR, and described message is carried called subscriber IMSI.
Steps A 3, VMSC/VLR distributes a roaming number, gives ICCF with roaming number according to the loopback of former road, and ICCF initiates called according to roaming number.
Fig. 4 obtains the flow chart of the embodiment one of roaming number for ICCF according to the present invention.As shown in Figure 4, scheme one comprises following concrete steps:
S402, CSCF receive the called request message of Calling Side.
S404, CSCF is transmitted to ICCF with called request message.
S406, ICCF initiate USSD route request information by the session control path to L-CAAF-n according to the called party data of preserving, and described session control path arrives L-CAAF-n by HSS, and described USSD route request information is carried called number.
S408, L-CAAF-n handle and receive the USSD route request information, according to the called party data of preserving, send MAP roaming number request message to VMSC/VLR, and described message is carried called subscriber IMSI.
S410, VMSC/VLR distributes a roaming number, sends MAP roaming number request response to L-CAAF-n, and described message is carried roaming number.
S412, L-CAAF-n sends USSD route requests response message by the session control path to ICCF, and described session control path arrives ICCF by HSS, and described USSD route requests response message carries roaming number.
S414, ICCF sets up called according to roaming number.
Mode two comprises the steps:
Step B1, ICCF initiate the request of USSD roaming number by the session control path to L-CAAF-n after receiving called request, and described message is carried called subscriber IMSI.
Step B2, L-CAAF initiates the roaming number request message to VMSC/VLR, and described message is carried called subscriber IMSI.
Step B3, VMSC/VLR distributes a roaming number, gives ICCF with roaming number according to the loopback of former road, and ICCF initiates called according to roaming number.
Fig. 5 obtains the flow chart of the embodiment two of roaming number for ICCF according to the present invention.As shown in Figure 5, scheme two comprises following concrete steps:
S502, CSCF receive the called request message of Calling Side.
S504, CSCF is transmitted to ICCF with called request message.
S506, ICCF initiate USSD roaming number request message by the session control path to L-CAAF-n according to the called party data of preserving, and described session control path arrives L-CAAF-n by HSS, and described USSD route request information is carried called subscriber IMSI.
S508, L-CAAF-n handle and receive USSD roaming number request message, according to the called party data of preserving, send MAP roaming number request message to VMSC/VLR, and described message is carried called subscriber IMSI.
S510, VMSC/VLR distributes a roaming number, sends MAP roaming number request response to L-CAAF-n, and described message is carried roaming number.
S512, L-CAAF-n sends USSD roaming number request response by the session control path to ICCF, and described session control path arrives ICCF by HSS, and described USSD roaming number request response is carried roaming number.
S514, ICCF sets up called according to roaming number.
Fig. 6 obtains the flow chart of the embodiment three of roaming number for ICCF according to the present invention.As shown in Figure 6, scheme three comprises following concrete steps:
S602, CSCF receive the called request message of Calling Side.
S604, CSCF is transmitted to ICCF with called request message.
S606, ICCF initiate SIP conversation request message by SIP session control path to L-CAAF-n according to the called party data of preserving, and this SIP conversation request message is carried called subscriber IMSI or user's called number.
S608, L-CAAF-n handle and receive the SIP conversation request message, according to the called party data of preserving, send MAP roaming number request message to VMSC/VLR, and described message is carried called subscriber IMSI.
S610, VMSC/VLR distributes a roaming number, sends MAP roaming number request response to L-CAAF-n, and described message is carried roaming number.
S612, L-CAAF-n sends sip response message by SIP session control path to ICCF, and described sip response message carries roaming number.
S614, ICCF sets up called according to roaming number.
From above-mentioned flow process, as can be seen, take method of the present invention, realized that non-ICS UE realizes called complete procedure, solved the critical process that ICCF obtains roaming number.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a non-IMS centralized traffic user obtains the method for roaming number, it is characterized in that, may further comprise the steps:
Step S302, IMS circuit domain control function entity receive caller to called request message after, insert the adaption function entity by the session control path to the local circuit territory and initiate the request of obtaining roaming number;
Step S304 after described local circuit territory is inserted the adaption function entity and received described request of obtaining roaming number, is mapped as the roaming number request message with described request and is sent to the mobile switching center network element on visit ground; And
Step S306, the mobile switching center network element on described visit ground distributes roaming number and according to former road the roaming number that is distributed is fed back to described IMS circuit domain control function entity, and described IMS circuit domain control function entity is set up and described called being connected according to the roaming number that obtains.
2. method according to claim 1, it is characterized in that, in described step S302, described IMS circuit domain control function entity inserts the adaption function entity to described local circuit territory and initiates the unstructured supplementary service data route request information, and described unstructured supplementary service data route request information carries called number.
3. method according to claim 2, it is characterized in that, in described step S302, described IMS circuit domain control function entity inserts the adaption function entity to described local circuit territory and initiates the initial session protocol request message, and described initial session protocol request message carries called number.
4. method according to claim 3, it is characterized in that, in described step S302, described IMS circuit domain control function entity inserts the adaption function entity to described local circuit territory and initiates unstructured supplementary service data roaming number request message, and described unstructured supplementary service data roaming number request message carries called subscriber's IMSI International Mobile Subscriber Identity identification code.
5. method according to claim 3, it is characterized in that, in described step S302, described IMS circuit domain control function entity inserts the adaption function entity to described local circuit territory and initiates the initial session protocol request message, and described initial session protocol request message carries called subscriber's IMSI International Mobile Subscriber Identity identification code.
6. according to claim 4 or 5 described methods, it is characterized in that, in described step S304, insert under the situation of mobile switching center network element that the adaption function entity is positioned at described visit ground in described local circuit territory, it is inside story that the roam-request messages that the adaption function entity sends to the mobile switching center network element on described visit ground is inserted in described local circuit territory.
7. method according to claim 6, it is characterized in that, in described step S304, insert under the situation of mobile switching center network element outside that the adaption function entity is positioned at described visit ground in described local circuit territory, the roam-request messages that described local circuit territory access adaption function entity sends to the mobile switching center network element on described visit ground is outside MAP message, and described outside MAP message carries called subscriber's IMSI International Mobile Subscriber Identity identification code.
8. method according to claim 7, it is characterized in that, in described step S306, after the mobile switching center network element on described visit ground obtains described roaming number, described roaming number is sent to described IMS circuit domain control function entity by the session control path.
9. method according to claim 8, it is characterized in that, in described step S302 and described step S306, described session control path arrives described local circuit territory from described IMS circuit domain control function entity through home subscriber server and inserts the adaption function entity.
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| CN101931901A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Service implementation method and system of IP multimedia subsystem network |
| CN101931900B (en) * | 2009-06-26 | 2014-03-19 | 中兴通讯股份有限公司 | Method and system for realizing services of IP multi-media subsystem network |
| CN102572785B (en) * | 2010-12-14 | 2015-08-12 | 中兴通讯股份有限公司 | User's loaming method and ICS strengthen network |
| CN102547651B (en) * | 2010-12-14 | 2015-06-10 | 中兴通讯股份有限公司 | User roaming method and ICS (internet connection sharing) enhanced network |
| CN102595372B (en) * | 2011-01-14 | 2018-05-22 | 中兴通讯股份有限公司 | User's loaming method and ICS enhancing networks |
| CN105228135A (en) * | 2014-06-12 | 2016-01-06 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method and system processing roaming |
| WO2017079977A1 (en) * | 2015-11-13 | 2017-05-18 | 华为技术有限公司 | Method and device for establishing call |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1905742A (en) * | 2006-07-12 | 2007-01-31 | 华为技术有限公司 | Method and system for implementing speech path optimizing in intelligent imputation position register system |
| CN1917692A (en) * | 2005-08-15 | 2007-02-21 | 华为技术有限公司 | Method and system for indicating roam status of called party |
| CN101018408A (en) * | 2007-02-01 | 2007-08-15 | 华为技术有限公司 | Service implementation method, network device and network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1917692A (en) * | 2005-08-15 | 2007-02-21 | 华为技术有限公司 | Method and system for indicating roam status of called party |
| CN1905742A (en) * | 2006-07-12 | 2007-01-31 | 华为技术有限公司 | Method and system for implementing speech path optimizing in intelligent imputation position register system |
| CN101018408A (en) * | 2007-02-01 | 2007-08-15 | 华为技术有限公司 | Service implementation method, network device and network |
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