Method of providing credit card calling service based on camel in UMTS

• US 20050113065A1
• Filed: 07/14/2004
• Published: 05/26/2005
• Est. Priority Date: 11/26/2003
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, KT Corporation
• Original Assignee: Electronics and Telecommunications Research Institute, KT Corporation
• Inventors: Kim, Dae Ung, Jang, Dong Man, Lim, Sun Hwan
• Granted Patent: US 7,194,250 B2
• Time in Patent Office: Days
• US Class Current: 455/406
• CPC Class Codes: H04M 17/103 using SIMs (USIMs) or calling cards
• CPC Class Codes: H04M 2017/12 using calling, telephone credit/debit cards
• CPC Class Codes: H04M 2215/204 UMTS; GPRS
• CPC Class Codes: H04M 2215/32 Involving wireless systems
• CPC Class Codes: H04W 4/24 Accounting or billing

Abstract

Provided is a method of providing a Credit Card Calling (CCC) service in a Customized Applications for Mobile networks Enhanced Logic (CAMEL)-based Universal Mobile Telecommunications System (UMTS). The method defines a method of controlling the CCC service that has not yet been defined in the existing UMTS CAMEL structure. Accordingly, it is possible to provide CCC service users with more differentiated, various features of the CCC service.

Claims

1. A method of providing a credit card calling (CCC) service in a customized applications for mobile networks enhanced logic (CAMEL)-based universal mobile telecommunication system, the method comprising:

(a) receiving a personal identification number (PIN) entered by a CCC service user who holds an activated credit card and determining whether the entered PIN is valid;

(b) when it is determined in (a) that the entered PIN is invalid, determining whether the PIN is valid within a range of a predetermined number of times;

(c) when it is determined in (a) or (b) that the entered PIN is valid, receiving a destination number from the CCC service user and determining whether the destination number is valid;

(d) when it is determined in (c) that the destination number, determining whether the destination number is valid within a range of a predetermined number of times;

(e) when it is determined in (c) or (d) that the destination number is valid, establishing a call; and

(f) when the CCC service user or a called party disconnects the call after call establishment, billing the CCC service user for the CCC service.

2. The method of claim 1, further comprising (g) after (f), making follow-on calls within a range of a predetermined number of times and billing the CCC service user therefor.

3. The method of claim 1, wherein (a) comprises:

(a-1) a mobile switching center (MSC) receiving a service access code (SAC) and a credit card number (CCN) from a mobile terminal equipment of the CCC service user;

(a-2) the MSC transmits an initial detection operation InitialDP, which includes the SAC and the CCN, to a service control point (SCP) so as to determine whether the credit card is valid;

(a-3) when it is determined in (a-2) that the credit card is valid, the SCP requests the CCC service user to submit the PIN and receives the submitted PIN via an intelligent peripheral; and

(a-4) the SCP searching for a credit card issuer'"'"'s database for identity of the CCC service user and determining whether the PIN is valid.

4. The method of claim 3, wherein (b) comprises:

(b-1) when it is determined in (a-4) that the PIN is invalid, the SCP request the CCC service user to submit another PIN and receives the submitted PIN via the intellectual peripheral;

(b-2) when a number of times to enter the PIN during (b-1) is smaller than a maximum allowed number of times to enter the PIN, the SCP searching for the credit card issuer'"'"'s database for identity of the CCC service user and determining whether the PIN is valid; and

(b-3) when the number of times to enter the PIN during (b-1) is larger than the maximum allowed number of times to enter the PIN, the SCP informing the CCC service user of this fact and terminating the CCC service.

5. The method of claim 4, wherein (c) comprises:

(c-1) when it is determined in (a-4) or (b-3) that the PIN is valid, the SCP requesting the CCC service user to enter the destination number via the intellectual peripheral; and

(c-2) the SCP receiving the destination number entered by the CCC service user via the intellectual peripheral and determining whether the destination number is valid.

6. The method of claim 5, wherein (d) comprises:

(d-1) when it is determined in (c-2) that the destination number is invalid, the SCP requesting the CCC service user to enter another destination number and receiving the entered destination number;

(d-2) when a number of times to enter the destination number during (d-1) is smaller than a maximum allowed number of times to enter the destination number, the SCP determining whether the destination number is valid; and

(d-3) when the number of times to enter the destination number during (d-1) is larger than the maximum allowed number of times to enter the destination number, the SCP informing the CCC service user of this fact and terminating the CCC service.

10. A computer readable recording medium for storing a program that executes a method of claim 1 or 7 in a computer.

7. A method of providing a credit card calling (CCC) service in a customized applications for mobile networks enhanced logic (CAMEL)-based universal mobile telecommunication system, the method comprising:

(a) a service switching function (SSF) receiving a service access code (SAC) and a credit card number (CCN) dialed by a CCC service user and sending an initial detection operation InitialDP to a global system for mobile communication (GSM) Service Control Function (gsmSCF);

(b) a new dialogue initiates and a service logic program instance (SLPI) is invoked;

(c) the SLPI requesting a connection between the gsmSCF and a specialized resource function (SRF);

(d) the SLPI receiving a personal identification number (PIN) from the SRF;

(e) the SLPI sending a search operation to a credit card issuer'"'"'s database so as to receive information regarding whether the PIN is valid;

(f) when the PIN is determined to be valid as a result of searching of the credit card issuer'"'"'s database, the SLPI receiving a destination number from the SRF;

(g) the SLPI requesting the SSF to send a report regarding a Basic Call State Model (BCSM) event;

(h) the SSF arming event detection points (EDPs) in response to the request for the report regarding the BCSM event;

(i) the SLPI requesting the SSF to disconnect a connection to the SRF in response to the arming of the EDPs;

(j) the SLPI requesting the CCC service user who holds the destination number to make a call connection; and

(k) when the SSF arms the EDPs indicating that a connection to the CCC service user or a called party is disconnected, the SLPI requesting the SSF to bill the CCC service user for the CCC service.

8. The method of claim 7, further comprising (I) after (k), making follow-on calls within a range of a predetermined number of times.

9. The method of claim 8, wherein the BCSM Event comprises:

an O_Disconnet event in which a connection to a the CCC service user or the called party is disconnected;

an O_Busy event in which the called party is busy on the telephone;

an O_No_Answer event in which the called party does not answer; and

an O_Route_Select_Failure event in which the called party is not positioned in a receiving area.