A SYSTEM AND METHOD FOR PREVENTING INTERNATIONAL REVENUE SHARING FRAUD

Technical Field

The present invention relates to a system and method which enable to prevent mobile network operators from paying high fees by obstructing international revenue sharing fraud.

Background of the Invention

Today, international revenue sharing fraud (IRSF) -which causes network operators to make loss by being obliged to pay high prices due to swindlers- is generally realized in mobile telecommunication sector. International revenue sharing fraud is usually carried out in the form of multiple and long calls towards a single number. Mobile network operators pay high prices for the said calls which are realized in the form of calls made by international carriers and terminated by charging high prices.

International revenue sharing fraud can be defined as follows in the simplest term : The first condition for international revenue sharing fraud is to arrange subscribers from mobile network operators where the call will be initiated. The said can be obtained many different methods for example such as capturing SlM's, PBX systems, stolen lines. Then, the international premium rate number (IPRN) to be called is found out. The said international premium rate number can be obtained by means of international premium rate number providers who are located in a country different from the calling subscriber's country by using international carriers. After the subscribers wherein the call wi l l be initiated and the international premium rate number to be called are obtained, long-held and multiple calls are initiated towards the international premium rate number by using the subscribers who are included in the mobile network operator wherein the calls will be initiated. The fees obtained from the calls received over international carriers by the mobile network operator are shared with the international premium rate number committing fraud by revenue sharing and lastly, it is decided whether to make next calls or not by calculating the fees earned or lost in some cases.

The International patent document no. WO2013030574, an application in the state of the art, discloses a system for detecting forgery and fraud situations within a mobile communication network. The said system comprises components which are configured in order to observe pre-determined types of data within the data being carried over interfaces within mobile communication network. After the observation carried out by these components; many types of forgery/fraud such as gateway forgery /fraud, revenue sharing fraud, credit card fraud can be detected.

Summary of the Invention

An objective of the present invention is to realize a system and method for preventing international revenue sharing fraud.

Another objective of the present invention is to realize a system and method which enable to prevent mobile network operators from paying high fees by obstructing international revenue sharing fraud.

Detailed Description of the Invention

"A System and Method for Preventing International Revenue Sharing Fraud" realized to fulfill the objectives of the present invention is shown in the figures attached, in which: Figure 1 is a schematic view of the inventive system.

Figure 2 is a flow chart of the inventive method.

The components illustrated in the figures are individually numbered, where the numbers refer to the following:

1. System

2. Database

3. Fraud prevention unit

100. Method

S. Station

The inventive system (1 ) for preventing international revenue sharing fraud comprises:

at least one database (2) wherein the international premium rate numbers

(IPRN) determined previously and used in international revenue sharing fraud are recorded; and

at least one fraud prevention unit (3) which is in communication with the database (2) and the station (S) included within the mobile network operator; when it is desired to make call abroad by a mobile network operator subscriber, connects to the database (2) by receiving the said call from the station (S) and controls whether the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2) or not; if it reaches the information as a result of the control transaction that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2), sends instruction to the station (S) for not establishing the call; if it reaches the information as a result of the control transaction that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are not recorded in the database (2), controls whether the number desiring to make call abroad has an ongoing call or not by getting in contact with the station (S); if it determines as a result of the control transaction that the number desiring to make call abroad has no ongoing call, takes no action; if it determines as a result of the control transaction that the number desiring to make call abroad has an ongoing call, controls whether the ongoing call determined and the call desired to be made abroad are made to the same number or not; if it determines as a result of the control transaction that the ongoing call determined and the call desired to be made abroad are desired to be made to different numbers, takes no action; if it determines as a result of the control transaction that the ongoing call determined and the call desired to be made abroad are desired to be made to same numbers, sends instruction to the station (S) for terminating the ongoing call and not establishing the call desired to be made abroad; and records the said number inside the database (2) by connecting to the database (2).

The database (2) included in the inventive system (1 ) is in communication with the fraud prevention unit (3) and the international premium rate numbers determined previously and used in international revenue sharing fraud are recorded in thereof.

The fraud prevention unit (3) included in the inventive system (1 ) is in communication with the database (2) and the station (S) that is included within the mobile network operator and enables to establish the calls desired by subscribers by receiving the call establishment demands from the subscribers of the mobile network operator. The fraud prevention unit (3) receives the said call from the station (S) when a mobile network operator subscriber wants to make call abroad. In one preferred embodiment of the invention, the call is directed from the station (S) to the fraud prevention unit (3) over SS7 CAMEL messaging. The fraud prevention unit (3) connects to the database (2) after receiving the call directed from the station (S) and controls whether the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2) or not. If the fraud prevention unit (3) reaches the information as a result of the control transaction that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2), the fraud prevention unit (3) sends instruction to the station (S) for not establishing the call. If the fraud prevention unit (3) reaches the information as a result of the control transaction that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are not recorded in the database (2), the fraud prevention unit (3) controls whether the number desiring to make call abroad has an ongoing call or not by getting in contact with the station (S). If the fraud prevention unit (3) determines as a result of the control transaction that the number desiring to make call abroad has no ongoing call, the fraud prevention unit (3) takes no action. If the fraud prevention unit (3) determines as a result of the control transaction that the number desiring to make call abroad has an ongoing call, the fraud prevention unit (3) controls whether the ongoing call determined and the call desired to be made abroad are made to the same number or not. If the fraud prevention unit (3) determines as a result of the control transaction that the ongoing call determined and the call desired to be made abroad are desired to be made to different numbers, the fraud prevention unit (3) takes no action. If the fraud prevention unit (3) determines as a result of the control transaction that the ongoing call determined and the call desired to be made abroad are desired to be made to same numbers, the fraud prevention unit (3) sends instruction to the station (S) for terminating the ongoing call and not establishing the call desired to be made abroad. The fraud prevention unit (3) also records the number desiring to make call abroad inside the database (2) by connecting to the database (2).

The inventive method (100) for preventing international revenue sharing fraud comprises steps of:

receiving the call desired to be made abroad from the station (S) (101); controlling whether the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2) or not (102);

if it is determined as a result of the control transaction (102) that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2), sending instruction to the station (S) for not establishing the call (103); if it is determined as a result of the control transaction (102) that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are not recorded in the database (2), controlling whether the number desiring to make call abroad has an ongoing call or not (104);

if it is determined as a result of the control transaction (104) that the number desiring to make call abroad has no ongoing call, taking no action (108);

if it is determined as a result of the control transaction (104) that the number desiring to make call abroad an ongoing call, controlling whether the ongoing call determined and the call desired to be made abroad are made to the same number or not (105);

if it is determined as a result of the control transaction (105) that the ongoing call determined and the call desired to be made abroad are desired to be made to different numbers, taking no action (108);

if it is determined as a result of the control transaction (105) that the ongoing call determined and the call desired to be made abroad are desired to be made to same numbers, sending instruction to the station (S) for terminating the ongoing call and not establishing the call desired to be made abroad (106); and

recording the number desiring to make call abroad inside the database (2) by connecting to the database (2). In the method (100) for preventing international revenue sharing fraud, the fraud prevention unit (3) receives the said call from the station (S) when a mobile network operator subscriber wants to make call abroad (101). In one preferred embodiment of the invention, the call is directed from the station (S) to the fraud prevention unit (3) over SS7 CAMEL messaging. After the fraud prevention unit (3) receives the call directed from the station (S) (101), it connects to the database (2) and controls whether the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2) or not (102). If the fraud prevention unit (3) reaches the information as a result of the control transaction (102) that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are recorded in the database (2), the fraud prevention unit (3) sends instruction to the station (S) for not establishing the call (103). If the fraud prevention unit (3) reaches the information as a result of the control transaction (102) that the number desiring to make call abroad and the number where the call desired to be made abroad will be established are not recorded in the database (2), the fraud prevention unit (3) controls whether the number desiring to make call abroad has an ongoing call or not by getting in contact with the station (S) (104). If the fraud prevention unit (3) determines as a result of the control transaction (104) that the number desiring to make call abroad has no ongoing call, the fraud prevention unit (3) takes no action (108). If the fraud prevention unit (3) determines as a result of the control transaction (104) that the number desiring to make call abroad has an ongoing call, the fraud prevention unit (3) controls whether the ongoing call determined and the call desired to be made abroad are made to the same number or not (105). If the fraud prevention unit (3) determines as a result of the control transaction (105) that the ongoing call determined and the call desired to be made abroad are desired to be made to different numbers, the fraud prevention unit (3) takes no action (108). If the fraud prevention unit (3) determines as a result of the control transaction (1 05) that the ongoing call determined and the call desired to be made abroad are desired to be made to same numbers, the fraud prevention unit (3) sends instruction to the station (S) for terminating the ongoing call and not establishing the call desired to be made abroad (106). The fraud prevention unit (3) also records the number desiring to make call abroad inside the database (2) by connecting to the database (2) (107). Within these basic concepts; it is possible to develop a wide range of embodiments of the inventive "System (1) and Method (100) for Preventing International Revenue Sharing Fraud, the invention cannot be limited to examples disclosed herein and it is essentially according to claims.