WO2007085112A1

WO2007085112A1 - A system and method for implementing the prepaid in the intelligent network

Info

Publication number: WO2007085112A1
Application number: PCT/CN2006/000128
Authority: WO
Inventors: Haijun Liu
Original assignee: Zte Corporation
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-08-02
Also published as: CN101351989A; CN101351989B

Abstract

A system for implementing the prepaid in the intelligent network with a method thereof, comprises: SCP, SSP, PSTN and one or more charge servers connecting to SCP. when SSP triggers the service of the intelligent network in SCP, the service of the intelligent network checks the state of the local user needed charging; if allow for a call, indicate SSP to cut-in the call. After the call is over, SCP informs the charge server and up-reports this call information including the call duration information. After receive it, the charge server implements the prepaid server of this call logic, updates the user state of the local data-base when the user state changes, and informs SCP. After receive the inform, SCP updates the user state. The present invention can expedite the service providing speed, its compatibility is good, and when update the prepaid service, it will not influence the user call.

Description

System and method for implementing prepaid payment by intelligent network

Technical field

The present invention relates to an intelligent network communication system, and more particularly to a system and method for implementing prepaid payment by an intelligent network.

Background technique

The use of intelligent network systems to provide services is flexible and fast compared to earlier direct use of switching equipment to provide telecommunications services. The prepaid service implemented entirely by the intelligent network is a widely-developed service. The existing intelligent network prepaid service is a business logic software loaded on the SCP to process logic related to call, billing, and user balance. With the rapid development of the telecom market, the number of users is huge, and the speed of the telecommunication services provided by the intelligent network is still insufficient. The intelligent network devices still have compatibility problems with the switching devices, compatibility problems with the switching network, and business software upgrades. The interrupted service affects the user's use, and the intelligent network system mainly deals with call-related services, and is difficult to closely integrate with the operator's report analysis system. These issues are prominent in the prepaid business.

Summary of the invention

The technical problem to be solved by the present invention is to provide a system and method for implementing prepaid payment by an intelligent network, which can speed up the service provisioning, has good compatibility, and does not affect the user's call when the prepaid service is updated.

In order to solve the above technical problem, the present invention provides a system for implementing prepaid payment by an intelligent network, including a service control point SCP, a service switching point SSP, and a telephone switching network, and the system further includes one or more meters connected to the SCP. a service server; the service logic software loaded on the SCP determines whether to connect the call according to the user status data in the system, and after the call ends, notifies the charging server to perform a prepaid related charging operation; The server is configured to perform prepaid service logic for the call after receiving the notification, and update the user status of the local database when the user status changes, and notify the SCP to update the user status.

Further, the above system may also have the following features: The event updates the user state of the local database when the user state changes, and notifies the SCP that the SCP updates the user state after receiving the notification.

Further, the system may further have the following feature: the database on the accounting server stores detailed data of the service user, including at least a user number, a balance, a status, and a service validity period.

Further, the above system may also have the following features: The execution of the prepaid related business logic undertaken by the billing server includes call cost calculation, update user balance, generate bill and update analysis report.

Further, the above system may further have the following feature: the SCP obtains the maximum call duration from the accounting server when the call allowing the call occurs, and the SCP instructs the SSP to disconnect the call when the call duration reaches the maximum call duration.

Further, the above system may also have the following features: It also includes a service maintenance terminal, which is used to operate software upgrade, billing configuration, and view reports.

In order to solve the above technical problem, the present invention also provides an intelligent network implementation method for prepaid, which is applied to an intelligent network communication system, and includes the following steps -

(a) When a call occurs, the service switching point SSP triggers the intelligent network service on the service control point SCP, and the intelligent network service checks the status of the user who needs to be charged locally. If the call is allowed, the SSP is instructed to connect the call, and the next step is performed. , otherwise instructing the SSP to release the call, ending;

(b) After the call is over, the SCP notifies the accounting server and reports the call information including the call duration information. After receiving the call, the accounting server executes the prepaid service logic for the call and updates when the user status changes. The user status of the local database, and the SCP is notified, and the SCP updates the user status after receiving the notification.

Further, the above method may further have the following features: If the user status changes, the charging server updates the user status of the local database, and notifies the SCP that the SCP updates the user status after receiving the notification.

Further, the foregoing method may further have the following features: In the step (b), the prepaid fee related service logic includes at least calculating a call charge, updating a user balance, and generating a bill.

Further, the above method may further have the following features: in the step (b), the SCP The prepaid information of the call to the billing server includes the calling number, the called number, the call start time, the call end time, the calling position, the called position, and the flow indicator.

Further, the foregoing method may further have the following features: in the step (b), after the SCP sends a message to the accounting server, the current call data is cached, and if the charging server response is not received within the specified time range, Send the message.

Further, the foregoing method may further have the following features: In the step (a), when a call occurs, if the call is allowed, the SCP also obtains the maximum call duration from the accounting server, and when the call duration reaches the maximum call duration, the SCP indicates The SSP disconnects the call.

Further, the above method may also have the following features: The charging server uses a PC server.

In summary, the system and method of the present invention can greatly speed up the service provisioning, and the service update on the accounting server does not affect the user call, and is independent of the specific switching device, the switching network, and the intelligent network protocol. Many business software providers produce prepaid services, speed up business updates, and do not affect users' calls when prepaid services (software or servers) are upgraded. In addition, the billing server can use a PC server, which reduces equipment costs and enhances functions. The billing server connects to the switch network through the SCP instead of connecting the business logic server to the switch network, which solves the problem of device compatibility and network compatibility. BRIEF abstract

1 is a schematic diagram of a system according to an embodiment of the present invention;

2 is a flow chart of a method for applying to a GSM network according to an embodiment of the present invention;

3 is a schematic diagram of a GSM network signaling flow when the call is connected according to the user status in FIG. 2. FIG. 4 is a schematic diagram of a GSM network signaling flow when the call is not allowed in FIG. 2; FIG. 5 is another embodiment, A schematic diagram of a GSM network signaling flow for connecting a call after pre-calculating the maximum call duration;

6 is a schematic flow chart of the message of the subscriber server in FIG. 2 updating the user status on the SCP. Preferred embodiment of the invention

The implementation of the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings - Figure 1 is a schematic diagram of the system network of the present invention, showing the system structure of the present invention: by SCP (Service Control Point), SSP (Service Switching Point), It consists of a billing server, a service maintenance terminal, and various telephone exchange networks.

In Figure 1, the SCP is connected to the SSP, using CAP (CAMEL (Customized Application for Mobile Network Enhanced Logic) application protocol), WIN (Wireless Intelligent Network), INAP (Intelligent Network Application Protocol), SIP (Session Initiation Protocol) As a communication protocol, it is used for service trigger information, call connection information, call status information, and the like. The SCP can be a multi-protocol-integrated device such as CAP or SIP, or a device that supports only one intelligent network protocol. This device can be used as an AS (APPLICATION SERVER) or PARLAY gateway. ability. The connection between the SSP and the switching network (wireless network, wired network) is No. 7 signaling and voice channel relay, or a broadband packet (PACKET) network such as IP network; SSP equipment can be GSM (Global Digital Mobile Telephone Network) The MSC of the CDMA (Code Division Multiple Access Multiplexing) network may also be the MSC SERVER (Mobile Switching Center Server) or the IMS (IP Multimedia Subsystem) CSCF (Call Session Con-trol Function) of the 3G network. device.

Compared with the traditional intelligent network prepayment, the business logic software loaded on the SCP of the present invention does not process the logic related to the billing and balance, and these functions are changed by the billing server, and the SCP is determined only by the user state data in the system. Whether the call is connected, the number and status data of each business user are saved in the SCP database, and the status includes: normal, arrears, suspension of business, loss reporting, freezing, unused, and the like. User status can also provide a reference for the SCP to play a voice prompt to the user.

As shown in Figure 1, several accounting servers are connected to the SCP via a TCP/IP (Transmission Control Protocol/Internet Protocol) network. The database on the billing server stores detailed data related to the prepaid service, including user number, balance, status, service expiration date, tariff level, billing discount scheme, and so on. The accounting server also undertakes the execution of the prepaid related business logic instead of the SCP, including the functions of rate configuration, call cost calculation, updating user balance, generating analysis reports, etc., and updating the user status to the user status when the user status changes. On the SCP.

The billing server can use a PC server on the hardware, and can use a free operating system and database to reduce costs. In terms of function distinction, a service maintenance terminal can be specifically set up. Operate software upgrades, billing configurations, view reports, and more.

2 is a flow chart of a method for implementing prepaid according to an embodiment of the present invention. The application in the GSM network is taken as an example, and the SCP does not request the accounting server to calculate the maximum call duration.

Step 110: When a call occurs, the SSP reports an IDP message to the SCP.

Step 120: After receiving the IDP message, the SCP checks the status data of the locally stored prepaid user that needs to be charged. If it is determined that the call is allowed, step 130 is performed, if the call is not allowed, step 230 is performed;

Step S130: The SCP sends an RRBE message to the SSP, instructing the SSP to register the checkpoint notification event. Step 140: The SCP sends an AC message and a CONTINUE message to the SSP, instructing the SSP to connect the call;

Step 150: The SSP connects the call according to the instruction of the SCP, and if the connection succeeds, starts the call; Step 160, after the call ends (maybe after the end of the call between the main and the called party is unsuccessful), the SSP reports the EB to the SCP (event report) ) message, notify the event, and report the ACR (application billing report) message, report the call duration;

Step 170: The SCP sends an RC (Release Call) message to the SSP, and the call process ends. Step 180: The SCP sends a call report to the charging server to instruct the charging server to perform prepaid service logic for the current call, such as charging and updating the user balance. Wait;

The call report includes call information such as calling number, called number, call start time, call end time, calling position, called position, process flag (calling process, called flow, call forwarding, etc.).

Step 190: After receiving the SCP message, the accounting server executes the prepaid service logic, and updates the user status of the local database when the user status changes;

The execution of the prepaid business logic includes charging the user, updating the local database user balance, generating a bill, and the like, and further updating the related statistical report data;

In order to ensure the reliable transmission of the call report, the SCP and the accounting server use a retransmission mechanism. After sending the call report to the accounting server, the SCP caches the current call data, if it is in the timer range. If the billing server response is not received, an attempt is made to resend to ensure accurate billing for the user.

Step 200: The charging server returns a response to the SCP, and the current user status is carried in the response message.

Step 210: After receiving the response from the accounting server, the SCP determines whether the user status changes, and if yes, performs step 220, otherwise, directly ends;

Step 220, the SCP updates the user status in the local database, and ends;

In step 230, the SCP sends an RC message to the SSP, instructing the SSP to release the call and playing the voice prompting that the user cannot connect to the call, and the SSP releases the call and ends.

Fig. 3 shows the signaling flow when the method of the above embodiment is connected to the call, and Fig. 4 shows the signaling flow when the call is not allowed to be connected.

In another embodiment, the user is not allowed to owe money, and therefore, the SCP needs to know in advance the allowed duration of the call to time the call. The flow of the method of this embodiment is basically the same as the above embodiment, and the differences are as follows:

In step 120, if the SCP determines to allow the call, the CHECK-ACC (Check User Account) message is sent to the charging server, and the message includes the calling number, the called number, the call start time, the current location of the user, and the process flag. Parameters such as (calling process, called process, call forwarding, etc.); after receiving the accounting server, return the CALL_DURATION message, the parameter includes the maximum duration for allowing the called party to call. Then, step 130 is performed; and during the subsequent call of step 150, if the duration of the call of the master and the called party reaches the maximum call duration, the SCP instructs the SSP to forcibly disconnect the call, and step 160 is performed. The other steps of the call process are the same as those of the above embodiment.

Figure 5 shows the GSM network signalling procedure for this embodiment of the call after the maximum call duration is calculated in advance.

In addition, the user status may also change due to events such as user registration loss, request to suspend business, expiration date, deduction of user rent, etc. At this time, the SCP may be actively notified by the accounting server. Figure 5 shows the message flow after the billing server updates the user status on the SCP, which is based on the GSM network. The situation is as an example. In the above case, when the user status changes, the accounting server updates the user status in the local database, and sends a message USER INFO about the user information such as the user status to the SCP; after receiving the message, the SCP updates the local database and responds The billing server ensures that updates to user status are not lost.

In summary, through the above system and method, the software (service) update on the accounting server does not affect the user call, and is independent of the specific switching device, the switching network, and the intelligent network protocol, facilitating more service software provisioning. The pre-paid service is produced, which speeds up the service update, and the pre-paid service software and billing server are upgraded without affecting the user's call; the billing server uses the PC server, which reduces the equipment cost and connects to the switch network through the SCP instead of The business logic server is connected to the switch network, which solves the problem of device compatibility and network compatibility.

The method of the present invention is also applicable to PHS (Personal Handyphone System), GSM, CDMA, PSTN (Public Switched Telephone Network) networks and all other circuit-switched networks, as well as broadband networks such as NGN (Next Generation Network) switches based on IP networks. Network, IMS network, etc. In other networks, the process is basically the same, only the name of the signaling message and the name of the parameter change between the SSP and the SCP.

Industrial applicability

The invention can be applied to an intelligent network system, which greatly speeds up the service provisioning. The service update on the accounting server does not affect the user call, and is independent of the specific switching device, the switching network, and the intelligent network protocol, and is convenient for more service software to provide. Producing prepaid services, speeding up business updates, and not affecting users' calls when upgrading prepaid services (software or servers).

Claims

Claim

1. An intelligent network implementation method for prepaid, applied to an intelligent network communication system, including the following

(a) When a call occurs, the service switching point SSP triggers the intelligent network service on the service control point SCP, and the intelligent network service checks the status of the user who needs to be charged locally. If the call is allowed, the SSP is instructed to connect the call, and the next step is performed. Otherwise, the SSP is instructed to release the call and ends;

2. The method according to claim 1, wherein if the user status changes, the charging server updates the user status of the local database, and notifies the SCP that the SCP updates the user status after receiving the notification.

3. The method according to claim 1, wherein in the step (b), the prepaid related service logic comprises calculating a call charge, updating a user balance, generating a bill, and updating an analysis report.

4. The method according to claim 1, wherein in the step (b), the SCP notifies the billing server that the prepaid information of the call includes a calling number, a called number, and a call start. Time, call end time, caller location, called location, and process flags.

5. The method according to claim 1, wherein in the step (b), after the SCP sends a message to the accounting server, the current call data is cached, and if the charging server is not received within the specified time range. In response, the message is resent.

The method according to claim 1, wherein in the step (a), when a call occurs, if the call is allowed, the SCP also obtains the maximum call duration from the accounting server, and the call duration reaches the maximum call duration. When the SCP instructs the SSP to disconnect the call.

A system for implementing prepaid payment by an intelligent network, comprising a service control point SCP, a service switching point SSP, and a telephone switching network, wherein the system further comprises one or more charging servers connected to the SCP; The business logic software loaded on the SCP is only based on the user shape in the system. The status data determines whether the call is connected, and after the call ends, notifying the charging server to perform a prepaid related charging operation; the charging server is configured to perform a prepaid service for the call after receiving the notification Logic and update the user state of the local database as the user state changes, and notify the SCP to update the user state.

8. The system according to claim 7, wherein the charging server updates the user status of the local database when the user status changes due to an event other than charging, and notifies the SCP that the SCP receives the notification. User status is updated afterwards.

The system according to claim 7, wherein the database on the accounting server stores detailed data of the service user, including at least a user number, a balance, a status, and a service validity period.

10. The system of claim 7, wherein the execution of the prepaid related service logic undertaken by the billing server comprises at least a call charge calculation, an update user balance, and a generated bill.

The system according to claim 7, wherein the SCP obtains the maximum call duration from the accounting server when the call allowing the call occurs, and the SCP indicates the SSP when the call duration reaches the maximum call duration. Open the call.

The system according to claim 7, further comprising a service maintenance terminal, configured to operate a software upgrade, a billing configuration, and a report.

13. The system of claim 7, wherein the billing server employs a PC server.