WO2008095440A1

WO2008095440A1 - A method, communication system and device for acquiring and providing msisdn number

Info

Publication number: WO2008095440A1
Application number: PCT/CN2008/070214
Authority: WO
Inventors: Lili Yang; Hengliang Zhang; Peili Xu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-02-08
Filing date: 2008-01-30
Publication date: 2008-08-14
Also published as: CN101242635A

Abstract

A method, communication system, HSS, AS, CSCF and CSI terminal for acquiring and providing MSISDN number are provided. The method for acquiring MSISDN number includes the following steps: transmitting the CS domain Mobile Station International Number MSISDN inquiring request of CSI terminal with combining Circuit Switched CS and IP Multimedia Subsystem services to Home Subscriber Server HSS; receiving the CS domain MSISDN of the said CSI terminal returned by the said HSS.

Description

Method, communication system and device for acquiring and providing MSISDN number

This application claims priority to Chinese Patent Application No. 200710007194.8, entitled "Methods for Obtaining MSISDN Numbers, Communication Systems, HSS, AS, CSCF, and CSI Terminals" submitted by the Chinese Patent Office on February 8, 2007. The entire contents of this application are incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method for acquiring and providing an MSISDN number, a communication system, an HSS, an AS, a CSCF, and a CSI terminal.

Background technique

IP (Internet Protocol) Multimedia Subsystem (IMS, IP Multimedia)

Subsystem) is an IP Multimedia Subsystem in the Wideband Code Division Multiple Access (WCDMA) network defined by the R3/R6 standard of the 3rd Generation Partnership Project (3GPP).

The IMS uses the IP packet domain as the bearer channel for its control signaling and media transmission, and uses the Session Initial Protocol (SIP) as the call control signaling. The user identity information in the IMS network is in the format of a SIP URI (Uniform Resource Identifier) or a Tel (Telephone) URI. In IMS, the IMS user subscription data is centrally managed in the Home Subscriber Server (HSS), and the service is served by the application server (AS,

Application Server) is provided uniformly. Session control is performed by the Serving-Call Session Control Function (S-CSCF). Among them, the user identities in the IMS network are called public user identities, which are the identities used to request communication with other users. In addition, Circuit Switched (CS) and Combining CS and IMS services (CSI) are a research topic in the current 3GPP standards. This topic focuses on how to combine 3G CS domain services with IMS domain services. The main research content of the first phase (CSI phase 1) studied in this topic is how to associate the CS domain call of the CS IMS dual mode terminal with the session of the IMS domain. The terminal of CSI phase 1 uses the CS domain preferentially due to its limited capacity. Host its real-time voice service.

Referring to FIG. 1, the prior art provides a solution for implementing interworking between a CSI terminal and an IMS terminal. The solution is to set a service logic control function entity CSI AS on the CSI terminal side, and after receiving the session request from the IMS terminal, the function entity splits the session with multiple media components into sessions containing real-time media components according to related information. And sessions that contain non-real-time media components. Then judge according to the relevant information, or choose to terminate the real-time session in the CS domain, or terminate the non-real-time session in the IMS domain. The solution specifically includes the following processes:

Step 101: The IMS terminal initiates an IMS session request to the CSI terminal, where the request includes real-time services and non-real-time services.

Step 102: The IMS entity on the IMS side forwards the request to the CSI AS on the CSI terminal side.

Step 103: The CSI AS performs business logic processing according to the related information, and separates the session request.

Step 104: The CSI AS sends a real-time voice session request to the Media Gateway Control Function (MGCF, Media Gateway Control Function).

Step 105: After receiving the session request message, the MGCF initiates a CS call to the CSI terminal. Step 106: The CSI AS sends a non-real-time session request to the CSI terminal.

Step 107: The CSI terminal sends a connect message of the CS to the MGCF.

Step 108: The MGCF sends a 200 OK response message of the voice session to the CSI.

Step 109: The CSI terminal sends a 200 OK response message. The response message contains only the media information of the MSRP.

Step 110: The CSI AS merges the CS call from the CSI terminal with the IMS session. Step 111: The CSI AS sends the merged 200 OK response message to the called IMS network. Step 112: The called IMS network forwards the 200 OK message to the IMS terminal.

In the process of creating the present invention, the inventors found that at least the following problems exist in the prior art: that is, before the step C104, the CSI AS needs to know the CS domain mobile station international number of the CSI terminal.

(MSISDN, Mobile Station International ISDN Number). After the CS domain MSISDN number is known, step 104 can be performed, and the real-time voice session request is sent to the CS domain of the CSI terminal for processing.

However, in the existing process, the CSI AS cannot know the CS domain MSISDN of the CSI terminal in advance. The number, which makes it impossible to route real-time voice session requests to the CS domain of the CSI terminal, causing the CSI service to fail.

Summary of the invention

The embodiment of the invention discloses a method for obtaining and providing an MSISDN number, a communication system, an HSS, an AS, a CSCF, and a CSI terminal, which enables the AS to obtain an MSISDN number.

The embodiment of the invention discloses a method for acquiring an international number of a mobile station, and the sending circuit switched CS and IP multimedia subsystems are combined with the CS domain mobile station international number MSISDN query request of the service CSI terminal to the home subscriber server HSS; receiving the HSS return The CS domain MSISDN of the CSI terminal.

The embodiment of the present invention discloses a method for providing a mobile station international number, receiving a CS domain MSISDN query request from a CSI terminal of an AS, and obtaining a CS domain MSISDN of the CSI terminal according to the query request; The CS domain MSISDN of the CSI terminal is sent to the AS. The embodiment of the present invention discloses a method for acquiring an international number of a mobile station. The call session control function entity CSCF receives a message carrying a CS domain MSISDN sent by a CSI terminal; the CSCF sending station The CS domain MSISDN of the CSI terminal to the AS; the AS receives the CS domain MSISDN of the CSI terminal from the CSCF.

The embodiment of the invention discloses a method for providing an international number of a mobile station, which receives a message carrying a CS domain MSISDN from a CSI terminal, and sends a CS domain MSISDN of the CSI terminal to the AS.

The embodiment of the present invention discloses a home subscriber network server, including: a query unit, configured to query a CS domain MSISDN of the CSI terminal according to a CS domain MSISDN query request of a CSI terminal from the AS; The CS domain MSISDN of the CSI terminal obtained by the query is sent to the AS.

The embodiment of the present invention discloses an application server, including: a query initiation unit, configured to send a CS domain MSISDN query request of a CSI terminal to an HSS, and a receiving unit, configured to receive a CS domain MSISDN of the CSI terminal from the HSS.

The embodiment of the present invention discloses a communication system, including a call session control function entity CSCF and an application server AS, where the CSCF includes a forwarding unit, configured to send a CS domain mobile station international number MSISDN from the CSI terminal to the AS; The AS includes a number obtaining unit, configured to acquire a CS domain MSISDN of the CSI terminal in the CSCF. The embodiment of the invention discloses a session control function entity, comprising: a forwarding unit, configured to send a CS domain MSISDN from a CSI terminal to an application server; and a sending trigger unit, configured to have a circuit switching and an IP multimedia subsystem combination in the CSI terminal When the capability of the service is enabled, the forwarding unit is triggered to work.

The embodiment of the present invention discloses a session control function entity, including: a forwarding unit, which sends a mobile station international number of a CS domain of a CSI terminal to an AS, and a sending trigger unit, configured to trigger a subscription request when receiving a subscription request from the AS The forwarding unit works.

The embodiment of the invention discloses a CSI terminal, which comprises a message sending unit, configured to send a message carrying the international number of the mobile station of the circuit switched domain to the session control function entity.

DRAWINGS

1 is a flow chart of interworking between a CSI terminal and an IMS terminal in the prior art;

2 is a flow chart of an embodiment of a method for obtaining an MSISDN number according to the present invention;

3 is a flow chart of another embodiment of a method for obtaining an MSISDN number according to the present invention;

4 is a flow chart of another embodiment of a method for obtaining an MS I SDN number according to the present invention;

Figure 5 is a functional block diagram of an embodiment of a communication system of the present invention;

6 is a functional block diagram of another embodiment of a communication system of the present invention;

7 is a functional block diagram of another embodiment of a communication system of the present invention.

detailed description

The embodiment of the present invention provides a method for obtaining an MSISDN number, which is mainly: before the CSI AS sends a voice session request to the MGCF to call the CSI terminal, obtains the CS domain MSISDN number of the CSI terminal from the HSS through the Sh reference point; or / The content of the message body in the session request acquires the CS domain MSISDN number of the CSI terminal.

The present invention will be further described in detail below with reference to the drawings and embodiments. For the disadvantages of the prior art, the embodiments of the present invention provide the following two methods for implementing the MSISDN number of the CSI AS and three specific implementation methods. The two basic methods described are:

An embodiment:

A method for obtaining an MSISDN number, including:

Step A: The CSI AS sends a CS domain MSISDN number query request to the HSS;

Step B: The HSS returns the CS domain MSISDN number obtained by the query to the CSI AS. In this embodiment, the CSI AS sends a CS domain MSISDN number query request to the HSS through the Sh reference point, and the HSS returns the number to the CSI AS to complete the function of acquiring the CS domain MSISDN number, so that the subsequent CSI terminal and the IMS terminal are successfully implemented. Interoperability is possible.

In step A above, the CSI AS may initiate the query request after completing the third party registration or each time a call request is received; the CSI AS may use the extended data processing or subscription/notification command to query the CS domain MSISDN number. The request includes the public user identity of the user and the CS domain MSISDN number request information. The data type labeled CSI MSISDN and its corresponding code can be extended in the Data-Reference AVP request. Therefore, the existing CSI terminal and the IMS terminal can be successfully implemented by fully utilizing the existing message without requiring a large cost.

Another embodiment:

A method for obtaining an MSISDN number, including:

Step A: The CSCF receives the message carrying the CS domain MSISDN number sent by the CSI terminal, and sends the CS domain MSISDN number to the AS;

Step B: The AS acquires the MSISDN number of the CS domain.

In this embodiment, the CSI terminal initiates a registration request to carry the CS domain MSISDN number to the CSCF, and triggers the CSCF to return the CS domain MSISDN number to the CSI AS, and completes the function of acquiring the CS domain MSISDN number, so that the subsequent CSI terminal and the IMS terminal are successfully implemented. Interoperability becomes available

•6匕

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In the foregoing step A, the extended message body of the registration request sent by the CSI terminal includes its CS domain MSISDN number, and the XML file of the extended message body may include a <CSI-MSISDN> parameter.

This step contains the following optional treatments:

1) The CSI terminal may extend the message body including its CS domain MSISDN number in the registration request;

2) The CSI terminal can also extend the message body containing its CS domain MSISDN number in the session request. A specific implementation:

Referring to FIG. 2, the CSI AS obtains the CS domain MSISDN number of the CSI terminal from the ShS through the Sh reference point, and includes the following specific processes:

Step 201: The CSI terminal initiates an IMS registration to its home S-CSCF, and may use a SIP URI. Or the tel URI initiates registration, the registration information carries the capability information of the terminal, indicating that it has CSI capability; Step 202, after the registration is successful, the S-CSCF replies with a 200 (OK) response to the CSI terminal; Step 203, the S-CSCF receives the terminal Capacity information, for business control;

Step 204: The S-CSCF generates a third-party REGISTER request according to the capability information of the terminal, and sends the request to the CSI AS.

Step 205: The CSI AS sends a 200 (OK) response to the S-CSCF, and the sensing terminal has CSI capability;

Here, the CSI AS can acquire the capability information to other systems or entities. This information is obtained by querying the Device Management Data (DM) system. Alternatively, the CSI AS can obtain this information through an interface with the presence system. Alternatively, the CSI AS obtains the capability information through the USSD of the terminal.

Step 206: The CSI AS initiates a data query to the HSS, and uses the extended UDR/UDA (User-Data-Request/Answer) command to request data, including the user identity and the CSI domain MSISDN number request information.

The tag of the request data may be extended in the request item of Data-Reference AVP, which is the CSI domain MSISDN number type and its corresponding code. An example of an extended command description is as follows:

Table 1: UDR commands

Information Mapping to Cat. Description

Element Diameter AVP

Name

User User-Identity C Requester's IMPU, PSI or MSISDN

Identity

Requested Data-Reference M The type of data requested, corresponding to a fixed encoding (increased data plus data type and corresponding encoding)

Requested Identity-Set 0 2 types:

Identity set 1. ALL IDENTITIES(O): Download all IMPU(s) associated with IMPI;

2. REGISTERED—IDENTITIES(l): Download all registered IMPU(s) associated with IMPI;

Requested Requested-Do C Indicates which domain is applied (IMS or CS) Domain main

Current Current-Locati C provides location information for triggering HSS to initiate location retrieval of CS Location on and / or PS domains

Service Service-Indicati C IMPU and Data-Reference jointly identify service-related transparent data that requires Indication on

Application Origin-Host M indicates the identity of the AS

Server

Identity

Application Server-Name C and IMPU or PSI as a query for iFC

Server prerequisites

Name

In addition to UDR/UDA, you can also

( Subscribe-Notification-request/ Answer )

The ( Push-Notification-Request/ Answer) command requests data.

Step 207: The HSS responds with a UDA response carrying the CS domain MSISDN number, and gives the requested data. The CSI AS can obtain the CS domain MSISDN number of the CSI terminal.

Another specific embodiment:

Referring to FIG. 3, the CSI AS obtains the CS domain MSISDN number of the CSI terminal by extracting the body content of the registration request.

Including the following specific processes:

Step 301: The CSI terminal initiates an IMS registration process to the home S-CSCF.

The CSI terminal initiates an IMS registration process to the S-CSCF to which it belongs, and can initiate registration by using a SIP URI or a tel URI. The registration information carries the capability information of the terminal, indicating that it has CSI capability. At the same time, in the request, the CS domain MSISDN number information is carried in an extended manner, and the SIP message body can be extended, or the SIP header field can be extended to carry information. There are two ways to expand:

A. Use the way to extend the message body. The format of the extended message body may be XML or other form, and the extended message body XML file may contain circuit domain MSISDN parameters indicating a CSI terminal, such as: a <CSI-MSISDN> parameter;

B. Use the method of extending the SIP header field. Can be a new header field or an extended header field Numbers and other forms.

For example: The extended message body contains its CS domain MSISDN number. An example of a request message is as follows:

Table 2: Registration Request Message

REGISTER sip: scscf.homel .net SIP/2.0

Via: SIP/2.0/UDP sip:[5555::aaa:bbb:ccc:ddd]; branch=z9hG4bKnashds7

Max-Forwards: 70

From :<sip: zhangsan@home . fr>; tag=6fa

To:<sip:zhangsan@home.fr>

Contact :<sip: [5555::aaa:bbb:ccc:ddd]>;expires=600000;

+g.3gpp.cs-voice;+g.3gpp.cs-video

Call-ID: apb03a0s09dkjdfglkj49112

CSeq: 43 REGISTER

Content-Type: application/3 pp-ims+xml

Content-Length: (...)

<?xml version:" 1.0"?>

<ims-3gpp version ="1 ">

<csi-msisdn> "MSISDN=11111111" </csi-msisdn>

</ims-3gpp> Step 302: After the registration is successful, the S-CSCF replies with a 200 (OK) response to the CSI terminal; Step 303: The S-CSCF receives the capability information of the terminal, and performs service control.

Step 304: The S-CSCF directly transmits the CS domain MSISDN number information to the CSI AS.

Specifically, a third-party REGISTER request is generated according to the received terminal capability information. The CS domain MSISDN number information carrying the CSI terminal in the request is sent to the CSI AS. Here, the S-CSCF may carry information by extending the message body or extending the SIP header field in a request sent to the CSI AS.

For example: The extended message body contains the CS domain MSISDN number of the CSI terminal. The request message is as follows:

Table 3: Third Party Registration Request Message REGISTER sip: as.home.net SIP/2.0

Via: SIP/2.0/UDP scscf.home.fr; branch=z9hG4bKnasctb9

Max-Forwards: 70

To:<sip:zhangsan@home.fr>

Contact :<sip: scscf.home.fr>;expires=600000

Content-Type: application/3 pp-ims+xml

Content-Length: (...)

<?xml version:" 1.0"?>

<ims-3gpp version ="1">

<csi-msisdn> "MSISDN=11111111" </csi-msisdn>

</ims-3gpp> Step 305: The CSI AS obtains the CS domain MSISDN number of the CSI terminal in the request message, and sends back a 200 (OK) response to the S-CSCF.

In this embodiment, the CSI terminal initiates a registration request to carry the CS domain MSISDN number to the S-CSCF, and triggers the S-CSCFCS to generate a third-party registration request that carries the CS domain MSISDN number to the CSI AS, and obtains the CS domain MSISDN number. The function makes it possible to successfully implement the subsequent interworking between the CSI terminal and the IMS terminal.

Another specific embodiment:

Referring to Figure 4, the CSI AS obtains the CS domain MSISDN number of the CSI terminal through the subscription/announcement mechanism, including the following specific processes:

Step 401: The CSI terminal initiates an IMS registration process to the home S-CSCF.

The registration process can be initiated by using the SIP URI or the tel URI. The registration information carries the capability information of the terminal, indicating that it has CSI capability, and carries its CS MSISDN number information in an extended manner in the request, for example: carrying the CS through the extended message body. Domain MSISDN number. Example of request message

Table 4: Registration Request Message REGISTER sip: scscf.homel.net SIP/2.0

Via: SIP/2.0/UDP sip:[5555::aaa:bbb:ccc:ddd]; branch=z9hG4bKnashds7

Max-Forwards: 70

From :<sip: zhangsan@home . fr>; tag=6fa

To:<sip:zhangsan@home.fr>

Contact :<sip: [5555::aaa:bbb:ccc:ddd]>;expires=600000;

+g.3gpp.cs-voice;+g.3gpp.cs-video

Call-ID: apb03a0s09dkjdfglkj49112

CSeq: 43 REGISTER

Content-Type: application/3 pp-ims+xml

Content-Length: (...)

<?xml version:" 1.0"?>

<ims-3gpp version ="1">

<csi-msisdn> "MSISDN=11111111" </csi-msisdn>

</ims-3gpp> Step 402: After the registration is successful, the S-CSCF replies with a 200 (OK) response to the CSI terminal; and after receiving the request, the S-CSCF saves the CS domain MSISDN number information in the request.

Step 403: The S-CSCF receives the capability information of the terminal, and performs service control.

Step 404: The S-CSCF generates a third-party registration request according to the received terminal capability information, and sends the request to the CSI AS.

Step 405: The CSI AS replies with a 200 (OK) response that the registration is successful, and considers that the CSI terminal has successfully registered in the S-CSCF.

Step 406: The CSI AS initiates a subscription (SUBSCRIBE) request to the S-CSCF.

The CSI AS can initiate a subscription to the S-CSCF by using data processing or subscription/notification information, and the S-CSCF is in the notification message.

Step 407: The S-CSCF replies with a 200 (OK) response that the subscription is successful.

Step 408: The S-CSCF carries the CS domain MSISDN of the CSI terminal in the NOTIFY message. The information is passed to the CSI AS, for example by extending the registration event package. For example: A < CSI-MSISDN > parameter.

An example of the contents of the xml file for registering an event package is as follows:

Table 5: NOTIFY message

<?xml version:" 1.0"?>

<reginfo xmlns= "urn: ietf: arams: xml: ns: reginfo"

Xmlns:csi-msisdn''urn:ietf:params:xml:ns:csimsisdninfo'' <ims-3gpp version ="l "version="0" state="full">

Registration aor="sip:zhangsan@home.fr" id="as9" state="active">

Sip: [5555::aaa:bbb:ccc:ddd]

<csi-msisdn> "MSISDN=11111111" </csi-msisdn>

</allOneLine>

</contact>

</registration>

</reginfo>

</ims-3gpp>

Step 409: The AS replies with a 200 (OK) response, and receives the CS domain MSISDN number of the CSI terminal. The CSI AS can know the CS domain MSISDN number of the CSI terminal in advance, and send the real-time service request to the CS domain of the CSI terminal for processing.

In this embodiment, the CSI terminal initiates a registration request to carry the CS domain MSISDN number to the S-CSCF, and triggers the S-CSCFCS to generate a third-party registration request to the CSI AS, and the CSI AS sends a request to the S-CSCF to subscribe to the CS. The subscription request of the domain MSISDN number is completed, and the function of acquiring the MSISDN number of the CS domain is completed, so that the subsequent communication between the CSI terminal and the IMS terminal is successfully implemented.

•6匕

dagger.

The present invention further provides an embodiment of a method for implementing interworking between a CSI terminal and an IMS terminal, Includes:

The IMS terminal initiates an IMS session request to the CSI terminal to the CSI terminal including the real-time and non-real-time services to the CSI AS;

Determining, by the CSI AS, a voice session request from the session request;

The CSI AS sends the voice session request to the MGCF; before the step, performing the steps included in any implementation manner of the method for acquiring the CS domain MSISDN number of the CSI terminal, acquiring the CS domain MSISDN number of the CSI terminal, Sending, by the CSI AS, a voice session request carrying the MSISDN number to the MGCF;

After receiving the voice session request message, the MGCF initiates a CS call to the CSI terminal according to the MSISDN number.

Other specific processes can be seen in Figure 1.

In view of the shortcomings of the prior art, the present invention also provides the following basic implementation manners:

A communication system, including CSI AS and HSS,

The CSI AS includes a query initiation unit, configured to send a CS domain MSISDN number query request to the HSS;

The HSS includes a query unit and a sending unit, where the query unit is configured to query the CS domain MSISDN number according to the CS domain MSISDN number query request; the sending unit is configured to send the CS domain MSISDN number obtained by the query Give the CSI AS.

In the foregoing implementation manner, the CS domain MSISDN number of the CSI terminal is obtained from the Sh reference point to the HSS, and the interworking function between the CSI terminal and the IMS terminal is implemented simply and effectively.

An HSS that includes:

The query unit is configured to query the CS domain MSISDN number according to the CS domain MSISDN number query request from the AS;

And a sending unit, configured to send the CS domain MSISDN number obtained by the query to the AS. An AS, including:

The query initiating unit is configured to send a CS domain MSISDN number query request to the HSS, and a receiving unit, configured to receive a CS domain MSISDN number from the HSS.

The above two embodiments can provide available devices for interworking CSI terminals and IMS terminals. A communication system, 4 CSCF CSI AS,

The CSCF is configured to receive a message that is sent by a CSI terminal and that carries a CS domain MSISDN number. The CSI AS includes a number obtaining unit, configured to acquire the CS domain MSISDN number in the CSCF.

The above implementation manner is that the CSI terminal uses the CSCF as the ISDN number forwarding network element, and can also implement the interworking function between the CSI terminal and the IMS terminal.

A CSCF that includes:

And a forwarding unit, configured to send the CS domain MSISDN number from the CSI terminal to the CSI AS, and send a triggering unit, configured to trigger the forwarding unit to work when the CSI terminal corresponding to the MSISDN number has CSI capability.

A CSCF that includes:

a forwarding unit, configured to send a CS domain MSISDN number to the AS according to the subscription request;

And a sending triggering unit, configured to trigger the forwarding unit to work when receiving the subscription request.

A CSI terminal includes a message sending unit, configured to send a message carrying a CS domain MSISDN number to the CSCF.

The above embodiments can provide available devices for interworking CSI terminals and IMS terminals. Referring to FIG. 5, the present invention also provides a specific embodiment of a communication system, including CSI AS 510 and HSS 520.

The CSI AS 510 includes a query trigger unit 511, a query request generating unit 512, a query originating unit 513, and a receiving unit 514. The query initiating unit 513 is configured to send a CS domain MSISDN number query request to the HSS through the Sh reference point. The query triggering unit 511 is configured to trigger the query initiation unit 513 to work when receiving a third-party registration request from the S-CSCF 530 and corresponding to the registered CSI terminal having CSI capability. The query request generating unit 512 is configured to generate a UDR command that extends the user identity and the CS domain MSISDN number request information, and is used as the query request sent by the query initiating unit 513 to the HSS.

The HSS 520 includes a query unit 521 and a sending unit 522, where the query unit 521 is configured to query the CS domain MSISDN number according to the CS domain MSISDN number query request after the HSS receives the query request from the CSI AS. The sending unit 522 is configured to send the CS domain MSISDN number obtained by the query to the CSI AS. Receiving unit 514 of CSI AS receives The CS domain MSISDN number from the HSS.

Referring to Figure 6, the present invention further provides another embodiment of a communication system, including a CSI terminal 610 and an S-CSCF 620.

The CSI terminal 610 includes a registration request generating unit 611 and a registration unit 612. The registration request generating unit 611 is configured to generate the registration request with the CS domain MSISDN number extended. The registration unit 612 is configured to send a registration request carrying the CS domain MSISDN number to the S-CSCF.

The S-CSCF 620 includes a transmit trigger unit 621 and a forwarding unit 622. The forwarding unit 622 is configured to generate a third-party registration request that carries the CS domain MSISDN number and send it to the CSI AS 630. The sending triggering unit 621 is configured to trigger the forwarding unit 622 to work when the CSI terminal 610 corresponding to the MSISDN number has CSI capability.

Referring to Figure 7, the present invention also provides another embodiment of a communication system, including a CSI terminal 710, an S-CSCF 720, and a CSI AS 730.

The CSI terminal 710 includes a registration request generating unit 711 and a registration unit 712. The registration request generating unit 711 is configured to generate the registration request with the CS domain MSISDN number extended. The registration unit 712 is configured to send a registration request carrying the CS domain MSISDN number to the S-CSCF 720.

The S-CSCF 720 includes a transmit trigger unit 721 and a forwarding unit 722. The forwarding unit 722 is configured to send a third party registration request to the CSI AS 730 after completing the registration of the CSI terminal 710, and send a CS domain MSISDN number to the CSI AS 730 according to the subscription request. The sending triggering unit 721 is configured to trigger the forwarding unit 722 to work when the CSI terminal 710 corresponding to the MSISDN number has CSI capability.

The CSI AS 730 includes a subscription unit 731 for transmitting, to the S-CSCF 720, a subscribed request to subscribe to the CS domain MSISDN number upon receipt of the third party registration request.

In summary, the embodiments of the present invention mainly have the following technical effects:

1) Providing multiple methods and system implementations for acquiring the MSISDN number of the CS domain, and providing the necessary CS domain MSISDN number for successfully implementing the interworking between the CSI terminal and the IMS terminal. The acquisition of the MSISDN number of the CS domain mainly includes the following methods:

a. The AS sends a CS domain MSISDN number query request to the HSS through the Sh reference point, and the HSS returns a number to the AS to complete the function of acquiring the CS domain MSISDN number.

b. The AS sends the CS domain MSISDN from the terminal to the AS through the S-CSCF, and completes Obtain the function of the CS domain MSISDN number.

2) Providing a plurality of communication devices for acquiring the MSISDN number of the CS domain, including the HSS, the CSI AS, the CSCF, and the CSI terminal, and simply and effectively implementing the interworking function between the CSI terminal and the IMS terminal.

As can be seen from the technical solution of the above embodiment, since the AS sends a CS domain MSISDN number query request to the HSS through the Sh reference point, the HSS returns the number to the AS, or sends the CS domain MSISDN number from the terminal through the CSCF. The function of obtaining the CS domain MSISDN number of the AS is completed in the AS, so that the subsequent CSI terminal and the IMS terminal can be successfully connected.

The CSCF and the CSI terminal are described in detail through the embodiments. The description of the above embodiments is only for helping to understand the method and the idea of the present invention. Meanwhile, for those skilled in the art, according to the idea of the present invention, in the specific embodiment There is a change in the scope of the application, and the contents of the present specification should not be construed as limiting the invention.

Claims

Rights request

A method for obtaining an international number of a mobile station, comprising:

Transmitting circuit switching CS and IP multimedia subsystem combined with service CSI terminal CS domain mobile station international number MSISDN query request to home subscriber network server HSS;

Receiving a CS domain MSISDN of the CSI terminal returned by the HSS.

The method according to claim 1, wherein the sending the CSI terminal's CS domain MSISDN query request comprises: transmitting the CS domain MSISDN query request of the CSI terminal by using an extended data processing or a subscription/notification command.

The method according to claim 1, wherein before the sending of the CS domain MSISDN query request of the CSI terminal to the HSS, the method further comprises: learning that the CSI terminal has circuit switching and

The ability of the IP Multimedia Subsystem to combine business.

The method according to any one of claims 1 to 3, characterized in that the execution subject of each step in the claim 1 is a CSI application server AS.

The method according to any one of claims 1 to 3, wherein the CS domain MSISDN query request includes user identity information of the CSI terminal, and the user identity information is used as a query CS domain. The basis of MSISDN.

6. A method of providing a mobile station international number, characterized by comprising:

Receiving a CS domain MSISDN query request from a CSI terminal of the AS;

Obtaining a CS domain MSISDN of the CSI terminal according to the query request query;

Sending the CS domain MSISDN of the CSI terminal obtained by the query to the AS.

The method according to claim 6, wherein the query request includes user identity information of the CSI terminal;

The obtaining the CS domain MSISDN of the CSI terminal according to the query request includes: obtaining the CS domain MSISDN of the CSI terminal according to the user identity information in the query request.

8. A method of providing a mobile station international number, comprising:

Receiving a message carrying a CS domain MSISDN from a CSI terminal;

Send the CS domain MSISDN of the CSI terminal to the AS.

The method according to claim 8, wherein the received message carrying the CS domain MSISDN is a registration message; and the step of transmitting a CS domain MSISDN of the CSI terminal to the AS The steps include:

Generating a registration request for the CS domain MSISDN carrying the CSI terminal;

Send the registration request to the AS.

The method according to claim 8, wherein before the sending the MSISDN of the CS domain of the CSI terminal to the AS, the method further includes:

Receiving a subscription request from the AS to subscribe to the CS domain MSISDN of the CSI terminal.

The method according to any one of claims 6 to 10, further comprising: before transmitting the CS domain MSISDN of the CSI terminal to the AS:

It is known that the CSI terminal has the capability of combining circuit switching and IP multimedia subsystems.

12. A home subscriber network server, comprising:

a query unit, configured to query a CS domain MSISDN of the CSI terminal according to a CS domain MSISDN query request of a CSI terminal from the AS;

And a sending unit, configured to send the CS domain MSISDN of the CSI terminal obtained by the query to the AS.

13. An application server, comprising:

a query initiation unit, configured to send a CS domain MSISDN query request of the CSI terminal to the HSS, and a receiving unit, configured to receive the CS domain MSISDN of the CSI terminal from the HSS.

14. The application server of claim 13, wherein:

The query initiation unit is specifically configured to send a CS domain MSISDN query request of the CSI terminal to the HSS, where the CS domain MSISDN query request includes user identity information of the CSI terminal.

A communication system comprising a call session control function entity CSCF and an application server AS, characterized in that

The CSCF includes a forwarding unit, configured to send a CS domain mobile station international number MSISDN from the CSI terminal to the AS;

The AS includes a number obtaining unit, configured to acquire the CSI terminal in the CSCF

CS domain MSISDN.

The communication system according to claim 15, wherein the communication system further comprises a CSI terminal, the CSI terminal includes a registration request generating unit, configured to generate a registration request carrying a CS domain MSISDN; and a registration unit For transmitting the CS domain to the CSCF MSISDN registration request.

The communication system according to claim 16, wherein the forwarding unit is configured to complete the registration according to the registration request from the CSI terminal, and generate a CS domain MSISDN carrying the CSI terminal. A third party registration request is sent to the AS.

18. The communication system of claim 17 wherein:

The CSCF further includes a sending triggering unit, configured to trigger the forwarding unit to work when receiving the subscription request from the AS;

The AS further includes a subscription unit, configured to send, to the CSCF, a subscription request for requesting subscription to a CS domain MSISDN of the CSI terminal.

19. A session control function entity, comprising:

And a forwarding unit, configured to send the CS domain MSISDN from the CSI terminal to the application server; and send a triggering unit, configured to trigger the forwarding unit to work when the CSI terminal has the capability of combining the circuit switching and the IP multimedia subsystem.

20. A session control function entity, comprising:

a forwarding unit, transmitting, to the AS, a mobile station international number of a CS domain of the CSI terminal;

And a sending triggering unit, configured to trigger the forwarding unit to work when receiving a subscription request from the AS.

A CSI terminal, comprising: a message sending unit, configured to send, to a session control function entity, a message carrying a mobile station international number of a circuit switched domain.