KR100263666B1 - Method of routing prepaid call on mobile communication system - Google Patents

Abstract

PURPOSE: A prepaid call routing method in a mobile communication system is provided to distinguish calls from a general call and a prepaid call, and to perform a routing to a prepaid server for the prepaid call, then to perform an on-line charging by the prepaid server. CONSTITUTION: When a prepaid service subscriber(100) dials, HLR/VLR(Hone Location Register/Visit Location Register)(120,140) check whether a transmitting telephone number of a received prepaid call is valid. If so, a system displays the valid transmitting telephone number to a data field of the prepaid subscriber(100), and notifies a mobile telephone exchange(130). The mobile telephone exchange(130) perceives the prepaid subscriber from the data field, and adds a prepaid routing number to the corresponding received number, then transmits the prepaid routing number to a CGS(Cellular Gateway Switch)(150). The CGS(150) confirms the prepaid routing number, and performs a receiving process to a prepaid server(170). The prepaid server(170) checks whether the received prepaid call is valid. If so, the prepaid server(170) performs a receiving process to the corresponding received telephone number.

Description

Prepaid call routing method in mobile communication system {Method of routing prepaid call on mobile communication system}

The present invention relates to a prepaid call routing method for routing a prepaid call to a prepaid server in a code division multiple access (CDMA) mobile communication system.

First, the prepaid service is to reduce the usage fee every time a mobile communication user pays a predetermined amount in advance, and is similar to a public telephone card of a landline telephone.

The biggest advantage of Prepaid service is that users who can't receive mobile communication service due to bad credit can use mobile communication service, and there is no worry of unpaid service fee and it can reduce charge collection cost. . In addition, in the case of renting a mobile phone for a short period of time, it is also accepted that it is possible to adjust the call volume by yourself.

Meanwhile, although CDMA mobile communication system has been introduced in Korea, many people still do not enjoy the benefits of mobile phones due to the burden of subscription fees and radio wave usage fees. Therefore, by providing a prepaid service through a CDMA mobile communication system, more mobile phone demand can be created.

Conventional methods of providing prepaid service are largely classified into a method using a calling card mainly used in the United States and a subscriber identity module (SIM) card used in the pan-European digital mobile phone camp. However, such prior art has not yet been disclosed to the general public, and there has been a continuous demand for the development of a method for providing a new prepaid service.

In the structure of the conventional CDMA mobile communication system, when a mobile telephone call is received, it cannot be routed to the prepaid server, and thus the prepaid service cannot be provided. Therefore, in order to generate more mobile telephone demand through the prepaid service, a method for routing the prepaid call to the prepaid server is essential.

Therefore, the present invention proposed in order to meet the above-described needs, in order to provide a prepaid service, the call is first divided into a general call and a prepaid call, and in the case of a prepaid call The present invention provides a prepaid call routing method in a mobile communication system in which a prepaid server can make an online billing for a prepaid call by routing from a mobile communication switch to a prepaid server. There is a purpose.

1 is an exemplary configuration diagram of a network providing a prefade service in a code division multiple access (CDMA) mobile communication system to which the present invention is applied.

2 is a flow diagram of one embodiment of a prepaid call routing method in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

100: subscriber 110: code division multiple access base station

120: code division multiple access home location register 130: code division multiple access exchange

140: code division multiple access visitor location register

150: mobile phone interconnection switch 160: public network

170: prefade server

A method of the present invention for achieving the above object is a prepaid call routing method in a code division multiple access (CDMA) mobile communication system, wherein a home / visitor location register (HLR / VLR) is used when dialing a prepaid service subscriber. A first step of checking the validity of the outgoing call number of the incoming pre-paid call in the; A second step of notifying the mobile telephone exchange of the valid outgoing telephone number by indicating that the prepaid service subscriber is a data field of the prepaid subscriber according to the check result of the first step; A third step of recognizing that the mobile telephone exchange is a prepaid service subscriber from the data field, and adding a prepaid routing number to the called telephone number and sending it to the mobile telephone interconnect switch (CGS); A fourth step of identifying, by the mobile telephone interconnection exchange, the incoming prepaid call to the prepaid server for the incoming prepaid call; And a fifth step in which the pre-fade server checks the validity of the incoming pre-fade call and processes the incoming pre-fade call with the corresponding incoming call number.

The introduction of the pre-fade system accommodates corporations who want to absorb demand that they are reluctant to subscribe to due to existing mobile phone subscription fees and radio wave fees, and to control the volume of calls for customers and employees who want to control their monthly call volume. can do. In addition, the telecommunication service provider can eliminate the charge storage fee without fear of unpaid use fee.

In order to introduce the prefade service, the current CDMA network has to be changed to route the prefade call to the prefade server. Through this CDMA network change, the pre-fade service can be conveniently provided like the existing mobile phone service.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a configuration of a network providing a prefade service in a code division multiple access (CDMA) mobile communication system to which the present invention is applied.

As shown in FIG. 1, a network providing a prepaid service receives a code division multiple access (CDMA) by receiving a subscriber 100 requesting to provide a prepaid service and a prefade call by dialing the subscriber 100. CDMA base station 110, which outputs to the exchange 130 and transmits the output of the CDMA switch 130 to the subscriber 100, and when the prepaid call is input from the CDMA base station 110, the outgoing telephone number is sent to the CDMA visitor location register ( Search in the HLR: Home Location Register (140), and if the outgoing telephone number of the subscriber (100) is not present in the Visitor Location Register (VLR) 140, the HLR: Home Location Register (HLR) (120). CDMA switch 130 and CDMA switch to check whether the current number of the subscriber 100 is valid, adds the pre-fade routing number to the called number and outputs it to the cellular gateway switch (CGS) (150) Incoming at 130 The CGS exchanger 150 that checks the prepaid routing number of the received call and processes the incoming call to the Prepaid Server 170, and first checks whether the prepaid number is valid for the incoming prepaid call and if it is valid, the original incoming call. A prepaid server 170 for receiving incoming calls with a number and a public network 160 are provided.

According to the present invention, by introducing a prepaid system into a CDMA mobile communication system, not only can a demand for mobile phones be created, but also a telecommunication service provider can reduce costs by eliminating unpaid charges and eliminating charges. . In addition, the pre-fade service can be routed to the pre-fade server so that the subscriber can use the pre-fade service more conveniently. Referring now to FIG. 2, a method of routing a prefade call to a prefade server will be described in more detail.

2 is a flowchart illustrating an embodiment of a prepaid call routing method according to the present invention.

As shown in FIG. 2, in the method of routing a prepaid call according to the present invention, when a subscriber who first registers with a prepaid service dials 210, the prepaid call is transmitted through a CDMA base station 110 through a CDMA switch 130. ), The CDMA exchanger 130 first retrieves the incoming outgoing call number (MIN) from the CDMA visitor location register 140 (211), and the incoming outgoing call number is registered in the CDMA visitor location register 140. In step 212, it is analyzed.

As a result, if the incoming outgoing call number is not registered in the CDMA visitor location register 140, the subscriber information about the incoming outgoing call number is sent to the corresponding CDMA home location register 120 to check whether the outgoing call number is valid. (213). At this time, if the registered outgoing call number is invalid (214), the CDMA home location register 120 rejects the incoming call (216), and if the outgoing call number is valid (214), the subscriber data field (OriginationIndicator or CallingFeatureIndicator) After the prepaid service subscriber call is marked with a "Prepaid Call" (215), the CDMA switch 130 is notified of the result (219).

As a result of the analysis, if the incoming outgoing call number is registered in the CDMA visitor location register 140, it is checked whether the incoming outgoing call number is valid (217), and if the outgoing call number is invalid (218), the CDMA home location In step 213, if the outgoing call number registered in the register 120 is valid, the process proceeds to step 213. If the outgoing call number is valid (218), a "prepaid call" called a prepaid service subscriber call is displayed in the subscriber data field. Later (215), the CDMA switch 130 is notified of the result (219).

Next, when the CDMA switch 130 confirms that the prepaid service subscriber call is from the subscriber data field (OriginationIndicator or CallingFeatureIndicator) (220), the prepaid routing number is added to the called number and transmitted to the mobile telephone interconnect switch 150. (221).

Subsequently, the mobile telephone interconnection exchange 150 verifies the prepaid routing number of the incoming call and processes the incoming call to the prepaid server 170 (222). At this time, the prefade server 170 searches for the prepaid number that is valid for the incoming prepaid call (223), if it is not valid (224), terminates if it is valid (224), and then processes the incoming call to the original called number. (225) End.

Here, the prepaid server 170 may charge the prepaid call online.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

The present invention as described above, by developing a method for routing the pre-paid call to the pre-fade server to perform the pre-fade service in the code division multiple access mobile telephone system while minimizing the change of the conventional code division multiple access network Provide fade mobile phone service and provide mobile communication service to more people by accommodating subscriber demand (customer who feels burden on initial mobile phone entry cost and short-term mobile phone use) that cannot be accommodated in conventional mobile phone service. It can work.

Claims (4)

A prepaid call routing method in a code division multiple access (CDMA) mobile communication system, A first step of validating an outgoing telephone number of a prepaid call received from a home / visitor location register (HLR / VLR) when dialing a prepaid service subscriber; A second step of notifying the mobile telephone exchange of the valid outgoing telephone number by indicating that the prepaid service subscriber is a data field of the prepaid subscriber according to the check result of the first step; A third step of recognizing that the mobile telephone exchange is a prepaid service subscriber from the data field, and adding a prepaid routing number to the called telephone number and sending it to the mobile telephone interconnect switch (CGS); A fourth step of identifying, by the mobile telephone interconnection exchange, the incoming prepaid call to the prepaid server for the incoming prepaid call; And A fifth step in which the pre-fade server checks the validity of the incoming pre-paid call and processes the valid pre-fade call with the corresponding incoming call number. Prefade call routing method in a mobile communication system comprising a. The method of claim 1, The first step is, A sixth step of entering a prepaid call to the mobile telephone exchange through a mobile telephone base station when the subscriber registered in the prepaid service dials; A seventh step of the mobile telephone exchange searching the visitor location register to determine whether the outgoing telephone number (subscriber number) of the incoming prepaid call is registered in the visitor location register; And An eighth step of transmitting the subscriber information to the home location register to check whether the outgoing telephone number is valid if not registered; Prefade call routing method in a mobile communication system comprising a. The method according to claim 1 or 2, The mobile telephone switchboard, In order to provide a prepaid service, a general call and a prepaid call are distinguished and routed to the prepaid server through the CGS in the case of a prepaid call. Prepaid call routing method. The method according to claim 1 or 2, The prefade server, A prepaid call routing method in a mobile communication system, wherein the prepaid call is charged online.