KR20200078059A - Apparatus and method for easy payment of roaming subscriber using blockchain - Google Patents

Abstract

The present invention relates to a device and a method for blockchain-based easy payment by a roaming subscriber. With the present invention, settlements at online/offline stores using mobile terminals can be made as well as roaming subscribers′ roaming fees related to voice call or data communication. The node device according to one aspect, which constitutes a blockchain network for settling roaming fees from a roaming mobile terminal roamed from a home network to a visiting network, includes: a block generation unit for block generation; a service identifier registration unit receiving a transaction of an easy payment service identifier and storing the transaction in the block; a data classification unit receiving a transaction of billing data of the roaming mobile terminal from at least one of the home network and the visiting network, storing the transaction in the block, classifying the billing data including the easy payment service identifier as easy payment billing data, and classifying the rest as roaming fee billing data; and a settlement unit performing roaming fee settlement between the home and visiting networks based on the roaming fee data, performing easy payment fee settlement between the home network and a communication network where the easy payment service identifier is registered based on the easy payment billing data, and storing the result of the settlement in the block.

Description

Device and method for easy payment of roaming subscribers using blockchain{APPARATUS AND METHOD FOR EASY PAYMENT OF ROAMING SUBSCRIBER USING BLOCKCHAIN}

The present invention relates to a technology for settlement of a roaming fee of a mobile communication service using a blockchain, and more specifically, an apparatus for settlement of an on/offline payment fee of a roaming service used by a roaming subscriber using a blockchain, and It's about how.

In the present mobile communication service, a service that provides a mobile phone calling and receiving service to any subscriber in any region through interworking between systems and bilateral agreements between mobile operators when a subscriber visits abroad is called an overseas roaming service. The mobile communication network before moving is referred to as a home network and the mobile communication network after moving is referred to as a visiting network. According to the commercialization of such an overseas roaming service, a mobile communication subscriber can easily make a call using his/her own number even if he/she moves abroad to a geographically long distance and cannot directly access a domestic mobile communication system.

Such a roaming service may be provided according to the contract of the home network operator and the visited network operator, and the visited network operator will settle the home network subscriber by billing the home network operator for a fee using his network. According to the conventional roaming fee settlement method, when a home network subscriber uses a visited network, the visited network operator uses the subscriber's usage data on a daily basis through a roaming settlement center, for example, a data clearing house. It is transmitted to the home network operator, and the fee data according to the usage amount is transmitted to the home network operator in a monthly unit through a separate roaming settlement center, for example, a financing clearing house. The home network operator pays the roaming fee to the visited network operator according to the fee data received through the roaming settlement.

However, according to the above-described conventional method, real-time settlement is difficult because it bundles roaming traffic data on a daily basis and consigns it to the settlement center to settle the roaming charges, and it is also difficult to quickly respond to roaming fraud or customer complaints. In addition, since the roaming fee is settled through the settlement, there is a delay problem because the settlement and relay fees are continuously generated and the payment is collected by monthly settlement. To solve this problem, attempts to settle roaming charges using blockchain are being developed. However, settlement of roaming charges using this blockchain is limited to voice calls and data communication. When a mobile communication subscriber purchases goods or services at an offline or online store in a foreign country and makes a payment using a mobile terminal, the method of integrating and settlement of the payment amount is not considered.

The present invention has been proposed to solve the above-mentioned problems, and roaming by using a blockchain to settle payment fees in on/offline stores using mobile terminals as well as roaming charges for roaming subscribers' voice calls and data communications. The aim is to provide a device and method that allows subscribers to easily make payments anywhere.

A node device constituting a blockchain network for calculating a roaming charge of a roaming mobile terminal roaming from a home network to a visited network according to an aspect includes: a block generator for generating a block; A service identifier register for receiving a transaction of a simple payment service identifier and storing it in the block; The transaction of the charging data of the roaming mobile terminal is received from at least one of the home network or the visited network and stored in the block, and the charging data including the simple payment service identifier in the charging data is classified as simple payment data. Data classification unit to classify the rest as roaming charge data; And performing roaming charge settlement between the home network and the visited network based on the roaming charge data, and performing simple payment charge settlement between the home network and the communication network registered with the simple payment service identifier based on the simple payment data. And a settlement unit that stores settlement results in the block.

The data classification unit may classify charging data including the simple payment service identifier in the called number into the simple payment data.

The called number may include the simple payment service identifier, a unique number of a store where a user of the roaming mobile terminal purchased an item or service, and a payment amount.

The simple payment data may be generated by the roaming mobile terminal sending a call including the simple payment service identifier, the unique number of the store, and the payment amount as a destination number.

The node device further forms a private channel with the node device of the communication network that has registered the simple payment service identifier, and further encrypts the transaction of the simple payment data with a designated encryption method and transmits the private transaction manager to the node device of the communication network. Including, the block generation unit may share the hash value with other node devices in the blockchain network after hashing the transaction stored in the block.

The service identifier registration unit, the data classification unit, and the settlement unit may be implemented as a smart contract.

A method of calculating a roaming charge of a roaming mobile terminal roaming from a home network to a visited network in a blockchain node constituting a blockchain network according to another aspect is a method of receiving a transaction of a simple payment service identifier in a block forming a blockchain. Storing; Receiving a transaction of charging data of the roaming mobile terminal from at least one of the home network and the visited network and storing the transaction in the block; Classifying the charging data including the simple payment service identifier from the charging data as simple payment data, and classifying the rest as roaming fee charging data; Performing roaming charge settlement between the home network and the visited network based on the roaming charge data and storing the settlement result in the block; And performing a simple payment fee settlement between the home network and a communication network registered with the simple payment service identifier based on the simple payment charging data, and storing the settlement result in the block.

In the step of sorting, the billing data including the simple payment service identifier in the called number may be classified as the simple payment billing data.

The called number may include the simple payment service identifier, a unique number of a store where a user of the roaming mobile terminal purchased an item or service, and a payment amount.

The simple payment data may be generated by the roaming mobile terminal sending a call including the simple payment service identifier, the unique number of the store, and the payment amount as a destination number.

The transaction of the charging data of the roaming mobile terminal is hashed, the hash value is stored in the block and shared with other nodes, and the method comprises forming a private channel with a node device of a communication network that has registered the simple payment service identifier, And, it may further include the step of encrypting the transaction of the simple payment billing data with a designated encryption method and transmitting it to a node device of the communication network.

According to the present invention, when settlement of the roaming fee using the blockchain, the simple payment fee is also settled, thereby reducing the fee issued while using a separate settlement office and real-time fee settlement is possible.

In addition, according to the present invention, roaming subscribers visiting overseas countries can simply generate an outgoing call without going through a complicated process such as separate card payment, account transfer, or installation of a payment program. Activate and increase the convenience of overseas payments.

1 is a diagram showing a system for settlement of a roaming fee and a simple payment fee according to an embodiment of the present invention.
2 is a schematic block diagram of a blockchain node according to an embodiment of the present invention.
3 is a flowchart illustrating a method of providing a roaming simple payment service in the system of FIG. 1.
4 is a flowchart illustrating a method of operating a blockchain node according to an embodiment of the present invention.
5 is a view showing a private channel between blockchain nodes according to an embodiment of the present invention.
6 is a view showing the configuration of a blockchain node using a private channel according to an embodiment of the present invention.

The above objects, features, and advantages will become more apparent through the following detailed description in connection with the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains can easily implement the technical spirit of the present invention. There will be. In addition, in the description of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing a system for settlement of a roaming fee and a simple payment fee according to an embodiment of the present invention. Referring to FIG. 1, a roaming service is a mobile communication subscriber that can use a mobile communication service in any of both regions by interworking systems when a mobile communication subscriber visits from one service area to another service area. The mobile communication network after moving is referred to as a visited network. Accordingly, as illustrated in FIG. 1, a mobile communication system providing a roaming service may be divided into a home network 110 and a visited network 120. The home network 110 is a network of operators to which the mobile terminal 140 is subscribed, and the visited network 120 is a network of overseas operators visited by the mobile terminal 140. In a foreign country visited by a mobile communication subscriber (hereinafter referred to as a roaming subscriber), not only the operators of the visited network 120 exist, but there may be other carriers that have not agreed to roaming services with the operators of the home network 110. In this embodiment, a communication service provider other than the service provider of the visited network 120 is referred to as a service provider A 130. Roaming subscribers can purchase on/offline services or goods of stores 134 subscribed to carrier A 130 using mobile terminal 140 while using mobile communication services through visit network 120 in foreign countries. have. The network configuration of the home network 110, the visited network 120, and the carrier A 130 may be the same. Hereinafter, the home network 110 and the visited network 120 will be mainly described.

The home network 110 and the visit network 120 include a base station, a mobile switching center (MSC), a gateway GPRS support node (GGSN), a mobility management entity (MME), a packet gateway (P-GW), and a home. It may include a Home Location Register (HLR)/Home Subscriber Server (HSS), billing systems 111 and 121, a global roaming gateway that relays global roaming calls, and the like. The billing systems 111 and 121 of the home network 110 and the visited network 120 process billing data based on a subscriber's phone number, that is, a billing process based on a mobile station international ISDN number (MSISDN) or an international mobile subscriber identity (IMSI). The billing systems 111 and 121 store the roaming billing policy and generate billing data, that is, CDR (Call Data Records) for the call termination or call reception of the roaming mobile terminal 140 is terminated. The billing systems 111 and 121 may include RSCP (Roaimg Service Control Point), etc. The billing data includes roaming subscriber identification information (eg, MSISDN, IMSI, etc.), data usage, voice call time, and visits. Countries, telecommunications carriers, etc. The charging systems 111 and 121 of the home network 110 and the visited network 120 transmit the billing data to the blockchain gateways 112 and 123 when the billing data is generated.

When the blockchain gateways 112 and 122 receive the billing data from the billing systems 111 and 121, they are converted into the transaction format of the blockchain network and transmitted to the blockchain network. The blockchain gateways 112 and 122 may receive the charging data in real time and transmit it to the blockchain network, or receive the charging data in a bundle unit and transmit it to the blockchain network. The blockchain gateways 112 and 122 may be installed with a wallet program that contains a private key that can use the blockchain network, and this wallet program can be used as a representative account of a mobile communication company. That is, the blockchain gateways 112 and 122 become clients of the blockchain network. If necessary, the wallet program can have multiple access authority keys, and these keys can be created or deleted.

The blockchain network includes a plurality of blockchain nodes 113 and 123, and each blockchain node 113 and 123 is connected to the blockchain gateways 112 and 123 of each mobile communication company. The carrier A 130 also configures the blockchain network with other blockchain nodes 113 and 123, including the blockchain node 133. In the present invention, it is possible to use a private or consortium blockchain technology in which several mobile operators participate. A plurality of blockchain nodes (113, 123, 133) of the blockchain network receive the transaction of charging data from the mobile operator's blockchain gateways (112, 122) and block the transaction when an agreement is reached through the agreement process of the participants. Record it in addition to the block in the chain.

The plurality of blockchain nodes 113, 123, and 133 of the blockchain network may be configured as a computer system such as a server or a PC, and may include communication means, memory, and at least one processor. The memory may include high-speed random access memory, and may also include one or more magnetic disk storage devices, non-volatile memory such as flash memory devices, or other non-volatile semiconductor memory devices. In some embodiments, the memory is a storage device located away from one or more processors, for example, communication circuitry, the Internet, an intranet, a local area network (LAN), a wide LAN (WLAN), a storage area network (SAN), etc. Or a network attached storage device, database accessed through a communication network, such as a suitable combination of these. A smart contract, which is a program implemented to perform a specific set operation when a certain condition is satisfied, may be installed in the memory and executed by the at least one processor.

The carrier A 130 registers the simple payment service identifier in the blockchain network to provide the simple payment service. For example, carrier A 130 registers 0123 as a simple payment service identifier in the blockchain network. The store 134 subscribed to the carrier A 130 receives and allocates a payment-only number to the carrier A 130 for easy payment. The dedicated payment number of the store 134 includes the simple payment service identifier and the unique identification number of the store 134. The payment-only number of the store 134 may be promoted to the roaming subscriber through online/offline media, or the owner of the store 134 may orally inform the roaming subscriber. Roaming subscribers only need to send the call by entering the payment-only number and the purchase amount of the store 134 as the destination number in the mobile terminal 140 in order to purchase the service or goods provided by the store 134. The call may be made in the form of a voice call, or through a text message, or through a dedicated application.

The blockchain nodes 113, 123, and 133 are installed with smart contracts as described above. The smart contract is a program implemented to perform a specific set operation when a certain condition is satisfied. In this embodiment, the billing data received from the home network 110 and the billing data received from the visited network 120 are compared and matched. Settle the roaming fee according to a preset method and pay virtual currency or real money to the visitor network 120. At this time, the smart contract is settled by offsetting if there is an amount that the home network 110 needs to receive from the visited network 120. In addition, the smart contract classifies the billing data separately when there is billing data including the simple payment service identifier in the called number in the billing data, and the home network 110 and the carrier A according to the billing fee included in the called number. (130) Settle the liver. At the time of settlement, the amount to be mutually paid between the home network 110 and the carrier A 130 is offset and settled. When the payment fee is paid to the carrier A 130, the operator of the home network 110 charges by summing the payment fee to the monthly billing amount of the roaming subscriber.

2 is a schematic block diagram of a blockchain node according to an embodiment of the present invention. Referring to FIG. 2, the blockchain nodes 113, 123, and 133 include a service identifier registration unit 210, a data classification unit 220, and a roaming fee settlement unit 230, which are components of a smart contract. It can be installed in memory and executed by a processor.

The service identifier registration unit 210 receives a simple payment service identifier from a communication provider providing a roaming simple payment service and stores it in a block. The service identifier registration unit 210 may receive a transaction including the simple payment service identifier from the communication provider's blockchain gateway 112, and may record the simple payment service identifier in a block. The identifier of the simple payment service is set differently for each communication service provider that provides the roaming simple payment service.

The data classification unit 220 classifies simple payment accounting data and general roaming charge accounting data in a transaction of charging data received from the home network 110 or the visited network 120. The data classification unit 220 classifies the billing data including the simple payment service identifier in the called number from the billing data as the simple payment accounting data, and classifies the rest as the roaming charge accounting data.

The roaming charge settlement unit 230 calculates roaming charges between communication providers based on billing data classified in the data classification unit 220 and stores the settlement result in a block. The roaming fee settlement unit 230 calculates the roaming fee between the home network 110 and the visitor network 120 based on the roaming fee charging data and pays virtual money or legal money to the operators of the visitor network 120. At this time, if the operator of the home network 110 has a roaming fee to be paid from the operator of the visited network 120, it is offset. In addition, the roaming charge settlement unit 230 calculates a payment amount to be paid to a communication provider that provides a simple payment by the operator of the home network 110 based on the simple payment accounting data. At this time, if there is a roaming fee to be paid by the operator of the home network 110, the offset is settled.

3 is a flowchart illustrating a method of providing a roaming simple payment service in the system of FIG. 1.

Referring to FIG. 3, in step S301, the carrier A 130 providing the simple payment service registers the simple payment service identifier in the blockchain network (S301). Preferably, the carrier A 130 transmits the transaction of the simple payment service identifier to the blockchain network through the blockchain gateway. Nodes of the blockchain network store the simple payment service identifier in a block.

In step S302, the store 134 subscribed to the carrier A 130 applies for a simple payment-only number to the carrier A 130. The owner of the store 134 can apply using a PC or mobile terminal in the store. The carrier A 130 generates and stores a simple payment-only number to be used in the store 134 and notifies the owner of the store 134 of the simple payment-only number. Here, the simple payment dedicated number includes the simple payment service identifier and a unique number that identifies the store 134.

In step S303, the owner of the store 134 promotes a simple payment-only number through an on/offline medium, and can also provide a simple payment-only number to a user of the roaming terminal 140. In step S304, when the user of the roaming terminal 140 visits the store 134 to purchase a service or item to make a payment, the roaming terminal 140 enters the simple payment-only number and the payment amount in the called number. Send a call. At this time, the call can be sent in the same way as when the voice call is sent, or by sending a text message, or in the dedicated application, the simple payment-only number and the payment amount can be entered in the call-in number input window. The transmitted call is transmitted to the communication company A 130 through the visited network 120 and the home network 110 for processing.

In step S305 and step S306, the charging system 111. 121 of the visited network 120 and the home network 110 generates charging data for the roaming terminal 140 using the mobile communication service in the visited network 120, respectively. . The charging data can be generated in real time or on a daily basis or on a regular basis. In steps S307 and S308, the transaction of charging data is propagated to the blockchain network through the blockchain gateways 112 and 122. Transactions of charging data are stored in blocks of blockchain nodes.

In step S309, the blockchain network, more specifically, the smart contract of the blockchain node includes the simple payment service identifier registered in step S301 among the billing data received from the visited network 120 and the home network 110 in the called number. It classifies simple payment billing data and general roaming billing data.

In step S310, the smart contract calculates the roaming fee between the home network 110 and the visited network 120 using the general roaming fee charging data, and in step S311, the home network 110 and the carrier are used by using the simple payment data. The fee between A 130 is settled. The smart contract stores the settlement result in a block. At this time, the smart contract calculates the fee to be paid to the visitor network 120 or the carrier A 130, while the home network 110 offsets the fee to be received from the visitor network 120 or the carrier A 130 to make the final charge Settle. The settled fee can be paid in virtual currency or legal currency. The settlement details are recorded by agreement on the block of the blockchain network.

4 is a flowchart illustrating a method of operating a blockchain node according to an embodiment of the present invention.

Referring to FIG. 4, in step S401, the smart contract of the blockchain nodes 113 and 123 roams from the home network 110 and the visited network 120 to the visited network 120 to use a roaming terminal using a mobile communication service ( 140) receives the transaction of charging data and stores it in a block. In step S402, the smart contract checks whether the received charging data is charging data of the outgoing call. If the billing data is not the billing data of the outgoing call, it is not billing data by the simple payment service. In step S405, the smart contract calculates the roaming charge between the home network 110 and the visited network 120. The settlement result is stored in the block.

On the other hand, if the billing data in step S402 is the billing data of the outgoing call, in step S403, the smart contract checks whether the simple payment service identifier is included in the called number. In the case of the present embodiment, it is checked whether the called party number includes the simple payment service identifier of the carrier A 130. If not included, the smart contract calculates a roaming fee between the home network 110 and the visited network 120 in step S405. On the other hand, if the simple payment service identifier of the carrier A 130 is included, in step S404, the smart contract setstles a fee between the home network 110 and the carrier A 130. The settlement result is stored in the block.

In the above embodiment, all of the blockchain nodes 113, 123, and 133 of the communication providers share the same data and can access and view the data at any time. However, from a communication provider's point of view, since the processed data includes important personal information of a communication subscriber, it is not appropriate for all information to be shared and shared between the blockchain nodes 113, 123, and 133. Therefore, as another embodiment, a private channel is created between the blockchain nodes 113, 123, and 133, and when a transaction occurs, nodes included in the corresponding private channel can share and share original data, and are not included in the private channel. They only have a hash value for that data, so they can't see what the original data is.

5 is a view showing a private channel between blockchain nodes according to an embodiment of the present invention. Referring to FIG. 5, the blockchain node 113 of the home network 110, the blockchain node 123 of the visited network 120, and the blockchain node 133 of the carrier A 130 constitute a blockchain network. When creating a private channel 1 between the blockchain node 113 of the home network 110 and the blockchain node 123 of the visited network 120, the original data can be shared and viewed with each other. A private channel 2 can be created between the blockchain node 113 and the blockchain node 133 of the carrier A 130 to share and view original data between each other. In addition, a private channel 3 can be created between the blockchain node 123 of the visitor network 120 and the blockchain node 133 of the carrier A 130 to share and view the original data with each other. Therefore, the blockchain node 113 of the home network 110 and the blockchain node 123 of the visited network 120 share the original of the roaming charging data of the roaming terminal 130 using the service in the visited network 120. It is mutually visible, and the blockchain node 133 of the carrier A 130 stores only the hash value of the roaming charging data. On the other hand, the blockchain node 113 of the home network 110 or the blockchain node 123 of the visited network 120 is separate from the roaming billing data for billing data including the simple payment service identifier of the carrier A 130. It is encrypted and transmitted to the blockchain node 133 of the carrier A 130, and the blockchain node 133 decrypts and stores the encrypted simple payment data. Therefore, the blockchain node 113 of the home network 110 or the blockchain node 123 of the visitor network 120 uses the billing data of the simple payment shared with the blockchain node 133 of the carrier A 130. To settle the fee.

6 is a view showing the configuration of a blockchain node using a private channel according to an embodiment of the present invention. In FIG. 6, the blockchain node 113 is a node of the home network 110, and the blockchain node 133 is a node of the carrier A 130. It is another carrier's node of the blockchain node 610. Each blockchain node 113, 133, and 610 includes a block generator 601 and a private transaction manager 602. In addition, although not shown in FIG. 6, each blockchain node 113, 133, and 610 includes a smart contract described with reference to FIG.

The block generation unit 601 synchronizes with other blockchain nodes by generating a block and writing a hash value that hash-processed the transaction in the generated block. In the public blockchain, the transaction is published as it is and shared with blockchain nodes, but in this embodiment, the transaction is hashed and the hash value is shared between the blockchain nodes. Therefore, blockchain nodes cannot know the original transaction. In this embodiment, roaming billing data that is settled using the blockchain is hashed and shared between blockchain nodes.

The private transaction manager 602 manages transactions shared between two blockchain nodes through a private channel. In this embodiment, the private transaction manager 602 manages transactions of simple payment accounting data. In FIG. 6, between the blockchain node 113 of the home network 110 and the blockchain node 133 of the carrier A 130, the roaming terminal 140 is generated using the store 134 subscribed to the carrier A 130. The simple payment billing data is shared through the private channel. The private transaction manager 602 delivers a decryption method capable of decrypting the encrypted transaction shared through the private channel to the private transaction manager 602 of another blockchain node included in the private channel.

The private transaction manager 602 encrypts the transaction of the simple payment data and transfers it to another blockchain node in the private channel, and also decrypts the encrypted transaction received from another blockchain node in the private channel. The private transaction manager 602 may share the decryption method in advance with the private transaction manager 602 of another node, or receive the decryption method together with the encrypted transaction from the private transaction manager 602 of the other node. .

In this embodiment, the private transaction manager 602 of the blockchain node 113 of the home network 110 may receive a transaction of simple payment billing data that needs to be shared with the carrier A 130 from the smart contract. The transaction is hashed by the block generator 601, and the hash value is shared with all blockchain nodes. The private transaction manager 602 of the blockchain node 113 of the home network 110 encrypts the transaction of the simple payment accounting data according to a designated encryption method and shares it with the blockchain node 133 of the carrier A 130, and the carrier The private transaction manager 602 of the blockchain node 133 of A 130 decrypts the transaction according to the designated decryption method. The home network 110, the visited network 120, and other carriers other than the carrier A 130 store only the hash value of the corresponding transaction and cannot confirm the original data.

A separate node can be used to encrypt and decrypt the transaction of the above simple payment accounting data and share it through a private channel. The separate node is commonly included in each private channel, and the separate node is provided with the above-described private channel manager 602 to handle sharing of transactions in the private channel. In addition, in the above embodiment, the carrier A 130 is described as being a separate carrier other than the visitor network 120, but the carrier A 130 and the visitor network 120 may be the same operator. That is, the store 134 may be a subscriber subscribed to the visited network 120, and the visited network 120 may register a simple payment service identifier in the blockchain network and allocate a dedicated simple payment number to the store.

While this specification includes many features, such features should not be construed as limiting the scope of the invention or the claims. Also, features described in individual embodiments herein may be implemented in combination in a single embodiment. Conversely, various features that are described in a single embodiment herein may be implemented in various embodiments individually or in combination as appropriate.

Although the operations in the drawings have been described in a specific order, it should not be understood that such operations are performed in a specific order as shown, or a series of sequences, or all described actions are performed to obtain a desired result. . In certain circumstances, multitasking and parallel processing may be advantageous. In addition, it should be understood that the division of various system components in the above-described embodiment does not require such division in all embodiments. The above-described program components and systems may be generally implemented as a package in a single software product or multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable form on a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.). This process will not be described in detail any more as those skilled in the art to which the present invention pertains can easily carry out.

The present invention described above, as the person skilled in the art to which the present invention pertains, various substitutions, modifications and changes are possible within the scope of the technical spirit of the present invention, and the above-described embodiments and attached It is not limited by the drawings.

110: home network
120: visit network
130: carrier A
111, 121: charging system
112, 122: Blockchain gateway
113, 123, 133: Blockchain node
140: mobile terminal

Claims (12)

In the node device constituting a blockchain network to settle the roaming charges of the roaming mobile terminal roaming from the home network to the visited network,
A block generator for generating blocks;
A service identifier register for receiving a transaction of a simple payment service identifier and storing it in the block;
The transaction of the charging data of the roaming mobile terminal is received from at least one of the home network or the visited network and stored in the block, and the charging data including the simple payment service identifier in the charging data is classified as simple payment data. Data classification unit to classify the rest as roaming charge data; And
Perform roaming charge settlement between the home network and the visited network based on the roaming charge data, and perform simple settlement charge settlement between the home network and a communication network registered with the simple payment service identifier based on the simple payment data. A node device including a settlement unit for storing a result in the block. According to claim 1,
The data classification unit,
A node device, characterized in that charging data including the simple payment service identifier in the called number is classified as the simple payment data. According to claim 2,
The called number is,
A node device comprising the simple payment service identifier, a unique number of a store where a user of the roaming mobile terminal purchased an item or service, and a payment amount. The method of claim 3,
The simple payment data,
A node device, characterized in that the simple payment service identifier, a unique number of the store, and a call including the payment amount as an incoming call number are generated by the roaming mobile terminal. According to claim 1,
Further comprising a private transaction manager to form a private channel with the node device of the communication network that has registered the simple payment service identifier, and encrypts the transaction of the simple payment data by a designated encryption method and transmits it to the node device of the communication network,
The block generating unit,
A node device characterized by sharing the hash value with other node devices in the blockchain network after hashing the transaction stored in the block. According to claim 1,
The service identifier registration unit, the data classification unit and the settlement unit node device, characterized in that implemented in a smart contract. As a method of calculating a roaming charge of a roaming mobile terminal roaming from a home network to a visited network in a blockchain node constituting a blockchain network,
Receiving a transaction of a simple payment service identifier and storing it in a block forming a blockchain;
Receiving a transaction of charging data of the roaming mobile terminal from at least one of the home network and the visited network and storing the transaction in the block;
Classifying the charging data including the simple payment service identifier from the charging data as simple payment data, and classifying the rest as roaming fee charging data;
Performing roaming charge settlement between the home network and the visited network based on the roaming charge data and storing the settlement result in the block; And
And performing a simple payment rate settlement between the home network and a communication network registered with the simple payment service identifier based on the simple payment data, and storing the settlement result in the block. The method of claim 7,
The classification step,
A method characterized by classifying charging data including the simple payment service identifier in the called number into the simple payment data. The method of claim 8,
The called number is,
A method comprising the simple payment service identifier, a unique number of a store where a user of the roaming mobile terminal purchased an item or service, and a payment amount. The method of claim 9,
The simple payment data,
And generating a call including the simple payment service identifier, the unique number of the store, and the payment amount as an incoming number from the roaming mobile terminal. The method of claim 7,
Transaction of the charging data of the roaming mobile terminal is hashed, the hash value is stored in the block and shared with other nodes,
The above method,
The method further comprising forming a private channel with the node device of the communication network registering the simple payment service identifier, and encrypting the transaction of the simple payment charging data with a designated encryption method and transmitting the transaction to the node device of the communication network. . A computer program recorded on a recording medium as a computer program executing the method according to any one of claims 7 to 11 through a computer system.

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