WO2012027939A1

WO2012027939A1 - One-number-service calling method and service control point

Info

Publication number: WO2012027939A1
Application number: PCT/CN2010/079819
Authority: WO
Inventors: 沈世元; 孙琼华; 骆毅; 王一峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-09-03
Filing date: 2010-12-15
Publication date: 2012-03-08
Also published as: CN101931925A; CN101931925B

Abstract

A one-number-service calling method is provided. The method includes: a service control point receives a call in a circuit bearing domain initiated by a calling terminal; the service control point judges whether the call is required to be anchored to an IP multimedia sub-system domain for processing according to an online state of an association number of a called terminal of the call; if so, the call is anchored to the IP multimedia sub-system domain for processing; if not, the call is initiated to the called terminal, and the call between the calling terminal and the called terminal is connected. A service control point for one-number-service calling is also provided. The solution reduces the unnecessary anchoring process, consequently reduces the call delay, is more conforming to the usage of the user, and provides the better service experience to the user.

Description

Method for one-way call and service control point

The present invention relates to the field of one-number call, and more particularly to a method and service control point for a one-way call. Background technique

The IP Multimedia Subsystem (IMS) is a subsystem of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) that supports IP multimedia services. Its main features are: Using Session Initiation Protocol (SIP), control separation from phase separation, separation of call and session, separation of network and service. The purpose of IMS is to establish a converged core network that is independent of access and can be shared by mobile networks and fixed networks. It can be used for different access methods such as 2.5G, 3G, Wireless Local Area Network (WLAN) and fixed broadband. Users provide a wide range of converged services, and the centralized Centralized Exchange (Centralx Exchange) business is ready for such a framework and needs.

Users can not only use the basic services and supplementary services of traditional Centrex services, such as intra-group short dialing, number display restriction, call forwarding, call restriction, distinctive ringing, etc., but also make full use of the openness and service expansion of the IMS architecture. The flexibility of providing a virtual private mobile network (VPMN) service that is beneficial to full-service operations. Its main feature is to support multiple user access methods. In addition to providing Centrex services to IMS users, it can also A large number of existing CS domain mobile phone users and user-level switch (PBX, Private Branch Exchange) users provide converged Centrex services, thereby providing users with a converged Centrex service across networks, regions, and terminals.

The unified one-way communication in the unified Centrex business is a common pass for Centrex users. The signal code (such as: GSM mobile phone number or TD mobile phone number) or IMS terminal number (TEL URI) is set as the main number of the service, and one to three mobile phone numbers or IMS terminal numbers can be set as the binding number when incoming. (ie: the associated number), the terminal that synchronizes or synchronizes the CS domain and the IMS domain of the associated number when the call is called, so that the user only needs to provide the unique number to the outside world (the number can be the mobile number, the number of the virtual terminal) ), it is possible to ring the communication terminals of various associated numbers. However, CS users in the Centrex service must anchor the call to the IMS domain when implementing the No. 1 pass-through, and implement the same-vibration function in the IMS domain.

At this stage, with the improvement of the IMS network, the number of IMS users also increases. The probability of IMS users associated with CS users in Centrex services is increasing. At present, most IMS users are soft terminals, such as: Soft DA (in voice) The office assistant system launched on the basis of media streams such as data, video, text, etc.) The terminal is logged in on the PC (personal user computer), and the IMS users of these associated numbers may be in an offline state. When the first pass resonance, the IMS user who also anchors the call to the associated number of the IMS domain will waste a lot of time. Summary of the invention

The main object of the present invention is to provide a method and a service control point for a one-number call to solve the problem that when a CS domain user implements the first-number resonance, the time is required to anchor the call to the IMS user of the associated number of the IMS domain. The problem of wasting.

The present invention provides a method for a one-number call, the method comprising:

The service control point receives the call of the calling terminal to initiate the circuit bearer domain;

The service control point determines whether it needs to be anchored to the IP multimedia subsystem domain for processing according to the online status of the associated number of the called terminal of the call;

If so, the call is anchored to the IP Multimedia Subsystem domain for processing; if not, a call is initiated to the called terminal to initiate a call between the calling terminal and the called terminal.

Preferably, the service control point is online according to the associated number of the called terminal of the call. And determining whether it is required to be anchored to the IP multimedia subsystem domain for processing, specifically: the service control point determining whether the associated number is a registered state; if at least one of the associated numbers is a registered state, The call is anchored to the IP Multimedia Subsystem domain for processing; otherwise, it is not anchored to the IP Multimedia Subsystem for processing.

Preferably, the service control point determines whether the associated number is a registered state, and the method is: the service control point acquires a current registration status of the associated number from an application server by using a global service control point.

Preferably, the anchoring the call to the IP multimedia subsystem domain for processing, specifically: the service control point sends a connection message to the mobile switching center, where the connection message carries an anchor to the IP multimedia subsystem. The routing code of the domain, which is anchored by the mobile switching center to the IP multimedia subsystem domain for processing according to the routing code.

Preferably, the service control point determines, according to the online status of the associated number of the called terminal of the call, whether it needs to be anchored to the IP multimedia subsystem domain for processing, the method further includes: determining whether the associated number is average It belongs to the IP multimedia subsystem domain. If not, it is judged that it needs to be anchored to the IP multimedia subsystem domain for processing; if yes, it is determined whether it needs to be anchored to IP multimedia according to the online status of the called terminal of the called terminal. The subsystem domain is processed. .

The present invention also provides a service control point for a one-number call, comprising: a call receiving unit, an anchor processing unit, and a call unit; wherein, the call receiving unit is configured to receive a circuit bearer domain initiated by the calling terminal a call processing unit, configured to determine, according to an online status of the associated number of the called terminal of the call received by the call receiving unit, whether to anchor to the IP multimedia subsystem domain for processing, and to anchor the call to the IP The multimedia subsystem domain performs processing, instead of starting the call unit; the calling unit is configured to initiate a call to the called terminal when the anchor processing unit determines that the anchoring processing unit does not need to be anchored to the IP multimedia system domain for processing. a call between the calling terminal and the called terminal. Preferably, the online status of the associated number is a registration status; and the anchor processing unit is specifically configured to: when at least one of the associated numbers is determined to be in a registration state, anchor the call to

The IP multimedia subsystem domain performs processing; when the association numbers are not in the registration state, they are not anchored to the IP multimedia subsystem domain for processing.

Preferably, the anchor processing unit is further configured to acquire a current registration status of the associated number from an application server by using a global service control point.

Preferably, the anchor processing unit is further configured to send a connection message to the mobile switching center, where the connection message carries a routing code anchored to the IP multimedia subsystem domain, so that the mobile switching center can be configured according to the The routing code anchors the call to the IP Multimedia Subsystem domain for processing.

Preferably, the anchor processing unit is further configured to: before determining the online status of the associated number, determine whether the associated numbers belong to an IP multimedia subsystem domain; if not all belong to, directly determine that the anchor needs to be anchored to The IP multimedia subsystem domain performs processing; when it belongs to the time, it determines whether it needs to be anchored to the IP multimedia subsystem domain for processing according to the online state of the associated number of the called terminal of the call.

The method and service control point of the one-number call provided by the present invention, when receiving the call of the calling terminal to initiate the circuit bearer domain, according to whether the current online state of the associated number of the called terminal of the call needs to be anchored, In order to reduce the unnecessary anchoring process, the delay of the call is reduced, and the user's use is more appropriate, thereby providing a better service experience for the user.

DRAWINGS

FIG. 1 is a schematic structural diagram of an IMS system according to an embodiment of the present invention;

2 is a flowchart of a method for a one-number call according to an embodiment of the present invention;

FIG. 3 is a flowchart of anchoring processing according to a registration state of an associated number of a called terminal according to an embodiment of the present invention; 4 is a flowchart of determining whether an associated number of a called terminal of the call is in a registration state according to an embodiment of the present invention;

FIG. 5 is a flow chart of a more specific embodiment of a one-number call method according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a service control point according to an embodiment of the present invention;

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The method and device provided in the embodiment of the present invention are applied to the IMS system shown in FIG. 1. The one-way calling method provided by the embodiment of the present invention is used by the CS domain mobile phone and the user to implement the Centrex fusion one-way simultaneous vibration function. The method for reducing the anchoring process to reduce the call delay includes: a Centrex service subsystem, a Mobile Switching Center (MSC), an End Office (LE, Local Exchange), and a user equipment (UE, User Equipment ), where the Centrex service subsystem includes the Centrex Service Server (AS, Application Server) and the Centrex Web Server; the LE includes the primary end office and the called end office, where LE_A is the calling end office, and LE_B is The UE includes the primary terminal and the called terminal. The UE-A is the calling terminal of the CS domain user, the UE-B is the called terminal of the CS domain user, and the UE-C is the associated number of the IMS.

Specifically, the Centrex service server includes a Centrex Service Control Point (SCP), which is responsible for service logic control of the Centrex service, storage and query of service data, control of Centrex IP, and mobile switching center (MSC, Mobile Switching). Center), call session control function (CSCF, Call Session Control Function) module connection, etc., also need to provide an interface with the Centrex web server to allow operators or terminals (computers, mobile phones, etc.) to perform business data on the Centrex service server. Modify, use at the same time When the subscriber registers or logs out in the IMS domain, the broadband service of the Centrex Service Server (AS, Application Server) records the status of these users for subscription to the Global Service Control Point (GSCP).

Centrex web server: The Centrex business subsystem provides the interface of the operator or user in the form of a web page. The Centrex web server is mainly responsible for setting the permissions of the Centrex business function.

The MSC controls the mobile stations located in the area it covers and completes the voice connection. It is also the interface between the Public Land Mobile-Communication Network (PLMN) and other networks. It completes call connection, billing, handover between base station subsystem (BSS, Base Station Subsystem) and MSC, and auxiliary radio resource management, mobility management and other functions. In addition, in order to establish call routing to the mobile station, each MSC also completes the function of the Gateway Mobile Switching Center (GMSC), that is, the function of querying the location information of the mobile station.

The embodiment of the invention provides a method for the first call, as shown in FIG. 2, the method includes the following steps:

S110. The service control point receives a call of a circuit bearer domain initiated by the calling terminal.

The user of the called terminal (eg, mobile phone) of the CS domain has subscribed to the Centrex-communication service; the user of the calling terminal of the CS domain initiates a call, and the call triggers the called SCP of the Centrex service, the called The service control point receives the call from the calling terminal to initiate the circuit bearer domain.

S120. The service control point determines, according to the online status of the associated number of the called terminal of the call, whether to anchor to the IMS domain for processing; if not, initiate a call to the called terminal, and connect the calling terminal. a call with the called terminal; if so, anchoring the call, so that the call can be simultaneously transmitted to the called terminal, and the associated number user of the called terminal, the called party The terminal and the associated number user of the called terminal can ring at the same time to realize the one-way simultaneous vibration function. As shown in FIG. 3, the foregoing step S120 specifically includes:

S 121. The service control point determines whether an associated number of the called terminal of the call is a registration status.

S122. If at least one of the associated numbers is in a registration state, the call is anchored to the IMS domain for processing; otherwise, the call is not anchored to the IMS domain for processing.

If the called terminal associated number of the call is in a logout state (ie, a non-registered state), a call is directly initiated to the called terminal, and a call between the calling terminal and the called terminal is performed.

In the foregoing embodiment, the foregoing anchoring process specifically includes: the service control point sends a connection message to the MSC, where the connection message carries a routing code anchored to the IMS domain, so that the MSC is based on the routing code. The call is anchored to the IMS domain for processing.

Here, the specific process of the anchoring process is as follows: If the associated number is already registered, the called SCP needs to be anchored, and the called SCP sends a Connect (Connect) message to the MSC, and the destination routing address of the connected message (Destination Routing Address) With the routing code anchored to the IMS domain, the MSC maps the routing code to the called terminal number in the Initial Address Message (IAM, Initial Address Message), and directs the route to the media gateway control. (MGCF, Media Gateway Control Function), the one-way simultaneous vibration function is implemented in the IMS domain by the Centrex broadband service. If there is a CS domain user in the associated number, the associated number is considered to be in the registered state, and the called SCP needs to perform the anchoring process on the associated number. If all the associated numbers are in the logout state, the called SCP directly initiates a call to the called terminal user in the CS domain, and no longer needs to be anchored to the IMS domain, the calling terminal and the called terminal make a call, and the calling terminal hangs up. , then end this call.

In the foregoing embodiment, in the foregoing step S121, determining whether the called terminal associated number of the call is in a registration state, as shown in FIG. 4, specifically, the method may include: the SCP acquiring the associated number from an application server by using a GSCP Current registration status.

In a more specific embodiment, the determining process of the current registration status of the associated number may be Includes the following steps:

51211. The called SCP queries the GSCP (Excute) the called terminal associated number of the CS domain. The current registration status (including: registration status and logout status);

51212, GSCP initiates a subscription to Centrex's third-party business (Subscribe);

51213. The Centrex third party service informs the current registration status of the associated number of the GSCP by means of a notification message (Notify);

51214. The GSCP returns the current registration status of the associated number to the called SCP by using an Excute Result.

51215. The called SCP receives the query result, and obtains a current registration status of the associated number from the GSCP.

The method provided in this embodiment determines whether the anchoring process needs to be performed according to the current registration status of the called terminal associated number of the call, and does not when the associated number of the called terminal is not in the registration state (ie, the logout state or the non-registered state). The anchoring process is performed, thereby reducing unnecessary anchoring processing, reducing the delay of the call, and more apt to the user's use, thereby providing a better service experience for the user.

If the SCP of the foregoing step S120 determines whether it needs to be anchored to the IMS domain for processing according to the online status of the called terminal associated number of the call, the method further includes: determining whether the associated numbers belong to the IMS domain; Then, it is directly judged that it needs to be anchored to the IMS domain for processing; if yes, it is determined according to the online state of the associated number of the called terminal of the call, whether it needs to be anchored to the IP multimedia subsystem domain for processing.

FIG. 5 is a flowchart of an implementation of a more specific embodiment of a one-way call method according to an embodiment of the present invention. In a more specific embodiment, the method may specifically include the following steps:

S21: The IMS user (for: the associated number user of the called terminal) initiates a registration (Register) request or an unregister (Unregister) request to the Centrex third party service.

S22: The core network CSCF transparently transmits the Register request or the Unregister request initiated by the IMS user. S23: The Centrex third party service records the current status of the IMS user and responds to the Register request or Unregister request.

S24: The core network CSCF transparently transmits the response of the Centrex third-party service.

S25: The calling terminal of the CS domain initiates a call, and the LE-A of the calling side analyzes according to the number of the called terminal of the current call, and sends the IAM through the Integrated Services Digital Network User Part (ISUP) protocol. The MSC, the MSC receives the current call initiated by the calling terminal, and triggers the current call to the called SCP corresponding to the Centrex AS according to the originating mobile intelligent network subscription information (0-CSI) of the calling party, and the MSC sends an initial detection point (IDP). The Initial Detection Point message is sent to the called SCP, where the IDP message carries the number of the CS domain called terminal.

S26: The called SCP determines that the associated user of the number of the called terminal is an IMS user according to the number of the called terminal, and then initiates an inquiry (Excute) to the GSCP to query the IMS. The current registration status of the associated number of the terminal.

S27: The GSCP initiates a subscription to the Centrex third-party service, and subscribes to the current registration status of all associated numbers of the called terminal of the CS domain.

S28: The Centrex third party service returns a response to the GSCP.

S29: The Centrex third party service informs the GSCP of the current registration status of all associated numbers of the called terminal by means of a Notify message.

S30: GSCP responds to the notification message of Centrex's third party business.

S31: GSCP passes the specific output field in the Excute Result message

(Specific Output) informs the current registration status of all associated numbers of the called terminal of the CS domain in the called SCP.

S32: The called SCP sends a status report event response report (RRBE, Request Report BCSM Event) message to the MSC, indicating that if there is a basic call state model (BCSM, BasicCallStateModel) event of the called terminal, it is reported to the called SCP. S33: The called SCP sends a billing center (AC, Account Center) message to the MSC. S34: The called SCP sends a FCI (Furnish Charging Information) message to the MSC to notify the service switching point (SSP) of the service switching point to add relevant content to the call CDR.

S35: According to step S31, the called SCP can know the current registration status of all associated numbers of the called terminal in the CS domain. When all the associated numbers are in the logout state, the called SCP does not need to perform the anchor processing process, and directly sends a connection message ( Connect message) to the MSC, the connection message carries the long code (Generic Number) of the called terminal B, wherein the long number of the called terminal B is the Destination Routing Address of the called terminal B.

S36: The MSC requests a mobile subscriber roaming number (MSRN, Mobile Station Roaming Number) from the called Home Location Register (HLR), the subsequent steps are the same as the normal narrowband call procedure, and the called terminal B (UE-B) of the narrowband user After a normal call after ringing, the delay of the call is greatly reduced.

S37: If the associated number is in the registration state, the called SCP is required to perform the anchoring process, and the Destination Routing Address in the Connect message sent in step S35 has a routing code anchored to the IMS domain, and the MSC maps the routing code to IAM. The Called Party Number in the message, the route to the MGCF, the MGCF deletes the routing code, and then sends the Invite (invitation) message to the CSCF, the broadband module of the Centrex service through the SIP, and the Centrex broadband service is in the IMS domain. To achieve the same number of simultaneous vibration function.

If there is a CS domain user in the associated number, the associated number is always registered. The service processing steps are the same as above, and the called SCP needs to perform anchor processing.

S38: The called terminal B (UE_B) sets the first-channel simultaneous vibration function, and sends an Invite (invitation) message to the associated number C. The CSCF transparently transmits the SIP Invite message, and the called terminal B's associated number C (UE C) vibrates. Bell, the calling number of the calling terminal and the called terminal B can be normally talked.

S39: The broadband module of the Centrex service avoids the SCP of the called terminal B in the CS domain in the CS domain. Perform secondary service processing. In the Invite message that initiates the call to the called terminal B, set a special prefix for the associated number (PAI=Prefix2+A, From=A, Request-URL=Prefix 1 +B, To=Prefix 1+B), then the current call is routed to the MGCF, MSC, and the called SCP judges whether the secondary service is processed according to the set special prefix. If it is a secondary service, the above process needs to be performed again. The service is triggered again. If it is not the secondary service, the called terminal B rings, and the calling terminal and the called terminal B can talk normally. Compared with the call scenario in step S36, when the user in the CS domain implements the Centrex Fusion One-Way Co-Vibration, all the scenarios need not be anchored, and the anchoring process does not reduce the call delay. Relevant to the user's feelings.

The embodiment of the present invention further provides a service control point, as shown in FIG. 6, including:

The call receiving unit 610 is configured to receive a call of the circuit bearer domain initiated by the calling terminal, and the anchor processing unit 620 is configured to determine, according to the online status of the associated number of the called terminal that is received by the call receiving unit 610, Anchored to the IMS domain for processing, if yes, the call is anchored to the IP Multimedia Subsystem domain for processing; if not, the call unit 630 is activated;

The calling unit 630, when the anchor processing unit 620 determines that it is not required to be anchored to the IMS domain for processing, is used to initiate a call to the called terminal, and to initiate a call between the calling terminal and the called terminal.

In a further embodiment, the online status of the associated number is a registration status;

The anchor processing unit 620 is specifically configured to: when at least one of the associated numbers is in a registration state, anchor the call to the IMS domain for processing; otherwise, the anchor is not anchored to the IMS domain for processing. That is, if the associated number of the called terminal of the call is in the logout state (non-registered state), the calling unit 630 is directly activated to initiate a call to the called terminal, and between the calling terminal and the called terminal. Call.

In a further embodiment, the anchor processing unit 620 is further configured to use the GSCP from the application. The server acquires the current registration status of the associated number.

In a further embodiment, the anchor processing unit 620 is further configured to send a connection message to the MSC, where the connection message carries a routing code anchored to the IMS domain, so that the MSC can be based on the routing code. The call is anchored to the IMS domain for processing.

In a further embodiment, the anchor processing unit 620 is further configured to determine whether the associated numbers belong to the IMS domain; if not, directly determine that the call needs to be anchored to the IMS domain for processing; if yes, According to the online status of the associated number of the called terminal of the call, it is determined whether it needs to be anchored to the IP multimedia subsystem domain for processing.

The service control point provided by the implementation of the present invention, when receiving the call of the calling terminal to initiate the circuit bearer domain, according to whether the online state of the associated number of the called terminal of the call needs to be anchored to reduce unnecessary anchoring processing. , reducing the delay of the call, more appropriate to the user's use, to provide users with a better service experience.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the scope of the present invention. Inside.

Claims

Claim

A method for calling a first number, wherein the method comprises:

The service control point receives the call of the circuit bearer domain initiated by the calling terminal;

The service control point determines whether it needs to be anchored to the IP multimedia subsystem domain for processing according to the online status of the called terminal associated number, and if so, anchors the call to the IP multimedia subsystem domain for processing. Otherwise, a call is initiated to the called terminal, and a call between the calling terminal and the called terminal is turned on.

The method of claim 1, wherein the service control point determines whether it needs to be anchored to the IP multimedia subsystem domain for processing according to the online status of the called terminal associated number, including:

Determining, by the service control point, whether the associated number is a registration status, and if at least one of the associated numbers is a registration status, anchoring the call to an IP multimedia subsystem domain for processing; otherwise, not anchoring to an IP The multimedia subsystem domain is processed.

3. The method according to claim 2, wherein the service control point determines whether the associated number is a registration status, and is:

The service control point acquires the current registration status of the associated number from the application server through the global service control point.

The method according to any one of claims 1 to 3, wherein the anchoring the call to an IP multimedia subsystem domain for processing comprises:

The service control point sends a connection message to the mobile switching center, where the connection message carries a routing code anchored to the IP multimedia subsystem domain, and the mobile switching center anchors the call according to the routing code Processing to the IP Multimedia Subsystem domain.

The method according to any one of claims 1 to 3, wherein the service control point determines whether it needs to be anchored to the IP multimedia subsystem domain according to the online status of the associated number of the called terminal of the call. Before the processing, the method further includes: Determining whether the associated numbers belong to the IP multimedia subsystem domain, and if not, determining that it needs to be anchored to the IP multimedia subsystem domain for processing; if yes, determining according to the online status of the associated terminal of the called terminal of the call Whether it needs to be anchored to the IP Multimedia Subsystem domain for processing.

A service control point for a one-way call, comprising: a call receiving unit, an anchor processing unit, and a calling unit;

a call receiving unit, configured to receive a call of a circuit bearer domain initiated by the calling terminal, and an anchor processing unit, configured to determine, according to an online status of the associated number of the called terminal that is received by the call receiving unit, whether to anchor to The IP multimedia subsystem domain performs processing, and the call is anchored to the IP multimedia subsystem domain for processing; if not, the call unit is activated;

a calling unit, configured to: when the anchor processing unit determines that the anchoring to the IP multimedia system domain is not required for processing, initiate a call to the called terminal, and connect a call between the calling terminal and the called terminal. .

7. The service control point according to claim 6, wherein the online status of the associated number is a registration status;

The anchor processing unit is specifically configured to: when at least one of the associated numbers is in a registration state, anchor the call to an IP multimedia subsystem domain for processing; when the association numbers are not in a registration state, Anchored to the IP Multimedia Subsystem domain for processing.

The service control point according to claim 7, wherein the anchor processing unit is further configured to acquire a current registration status of the associated number from an application server by using a global service control point.

9. The service control point according to any one of claims 6 to 8, characterized in that

The anchor processing unit is further configured to send a connection message to the mobile switching center, where the connection message carries a routing code anchored to the IP multimedia subsystem domain, so that the mobile switching center according to the routing code The call is anchored to the IP Multimedia Subsystem domain for processing.

The service control point according to any one of claims 6 to 8, wherein the anchor processing unit is further configured to: before determining the online status of the associated number, determine whether the associated number belongs to When the IP multimedia subsystem domain is not all, the direct judgment needs to be anchored to the IP multimedia subsystem domain for processing; when it belongs to, according to the online status of the associated number of the called terminal of the call, it is determined whether it needs to be anchored to The IP Multimedia Subsystem domain is processed.