System for generating voice, video and short message call records from VoLTE roaming data

Abstract

A system for generating voice, video and short message call records from VoLTE roaming data, the invention relates to a system (1) capable of generating call details relating to voice and short message communications of a foreigner, i.e., a roaming user, while the foreigner performs voice and short message communications through VoLTE, and the network data flow generated by voice, short messages and video protocols of foreigners can be observed by the network.

Description

Technical Field

[0001] The present invention relates to a system capable of generating call detail records related to voice and SMS communications of foreigners (i.e. roaming users) when the said persons perform voice and SMS communications via VoLTE, and ensuring that the network can observe the network data traffic generated by the voice, SMS and video protocols with the foreigners. Background of the Invention Today, mobile communications are carried out by standards set by the 3GPP organization. Users can communicate with each other and enjoy high-quality voice transmission through mobile devices that support the VoLTE function. The communication network charges people who communicate through VoLTE based only on mobile data. However, the communication network will reach a minute-based voice, minute-based video, and number-based SMS agreement with its own subscribers or roaming foreign subscribers. In the prior art, roaming users are only charged according to mobile data when billing. In the prior art, there is no solution that can generate call detail records related to voice, video, and SMS communications implemented by VoLTE roamers between roaming networks and their local networks; decode communication protocols such as Session Initiation Protocol (SIP), User Datagram Protocol (UDP), Transmission Control Protocol (TCP), and Internet Protocol (IP) by providing a function to provide services when generating call detail records for VoLTE roamers; and provide visibility to business teams by generating call detail records for voice, video, and SMS data of VoLTE roamers, thereby eliminating revenue losses caused by miscalculations in agreements between foreign networks and local networks.

[0003] For the above reasons, there is a need for a system for generating voice, video and SMS call records from VoLTE roaming data, which is capable of generating call detail records related to voice, video and SMS communications achieved by VoLTE roamers between a roaming network and their local network; decoding communication protocols such as Session Initiation Protocol (SIP), User Datagram Protocol (UDP), Transmission Control Protocol (TCP) and Internet Protocol (IP) by providing a service function when generating call detail records for VoLTE roamers; and providing visibility to business teams by generating call detail records for voice, video and SMS data of VoLTE roamers, thereby eliminating revenue losses caused by miscalculations in agreements between foreign networks and local networks.

[0004] US Patent Document US2021227001 (an application in the prior art) discloses a system and method for implementing VoLTE and circuit-switched voice and SMS interworking functions to provide voice and SMS services to a visited network (VPLMN, visited public land mobile network) through VoLTE roaming and "SMS transmitted over SGs interface", and circuit-switched voice and SMS services to a home network (HPLMN, home public land mobile network). The interworking function enables and redirects IMS (IP Multimedia Subsystem) traffic in the visited network (VPLMN) to a hosted IMS core, and establishes a voice connection with the PSTN (public switched telephone network) through MGCF (media gateway control function) and MGW (media gateway). The interworking function also performs circuit-switched location update registration in the HLR (home location register) of the HPLMN to receive voice calls and SMS messages from mobile terminals. Summary of the invention

[0005] The objective of the present invention is to realize a system for generating voice, video and SMS call records from VoLTE roaming data, which is capable of generating call detail records related to voice, video and SMS communications realized by VoLTE roamers between a roaming network and their home network; decoding communication protocols such as Session Initiation Protocol (SIP), User Datagram Protocol (UDP), Transmission Control Protocol (TCP) and Internet Protocol (IP) by providing a function of providing services when generating call detail records for VoLTE roamers; and providing visibility to business teams by generating call detail records for voice, video and SMS data of VoLTE roamers, thereby eliminating revenue losses caused by miscalculations in agreements between foreign networks and local networks.

[0006] Detailed Description of the Invention The “System for Generating Voice, Video and SMS Call Records from VoLTE Roaming Data” developed to achieve the object of the present invention is shown in the accompanying drawings, wherein: Figure 1 It is a schematic diagram of generating voice, video and SMS call records from VoLTE roaming data in the system of the present invention.

[0007] The components shown in the figure are numbered and the numbers correspond as follows: 1. System 2. Electronic devices 3. Access to public land mobile networks 4. Local public land mobile network 5. Server 6. U. User 7. NE. Network element The system (1) of the present invention is a system for generating voice, video and SMS call records from VoLTE roaming data. The system is capable of generating call detail records related to the voice and SMS communications of foreigners (i.e. roaming users) when the foreigners conduct voice and SMS communications via VoLTE, and ensuring that the network can observe the network data traffic generated by the voice, SMS and video protocols with the foreigners, including: At least one electronic device (2) configured to enable a user (U) to communicate with others via at least one communication network; at least one visited public land mobile network (3) configured to enable a user (U) to communicate with others by ensuring that the user (U) roams in another area using his local SIM card, and having a plurality of network elements (NE); at least one local public land mobile network (4), configured to terminate roaming data (such as voice, video, SMS) itself from a visiting public land mobile network (3), comprising a communication network to which a user (U) subscribes, and having a plurality of network elements (NE); At least one server (5), included in the visited public land mobile network (3), is configured to generate a call detail record of voice data, a call detail record of video data and a call detail record of SMS data by using the voice, video and SMS data traffic information of the user (U) through its own voice call detail record generation function, when the roaming electronic device (2) operates roaming data from the visited public land mobile network (3) to the local public land mobile network (4); and ensure that the generated call detail record related to the electronic device (2) of the roaming user (U) is retained in the visited public land mobile network (3).

[0008] The electronic device (2) included in the system (1) of the present invention is a smart device, such as a mobile phone, a tablet computer, or a computer, configured to enable a user (U) to initiate a call, send a text message, or send a video to a visited public land mobile network (3) via VoLTE, ensuring that the user (U) is roaming on the visited public land mobile network (3). The electronic device (2) is configured to send an invitation message to the IMS subnet of the local public land mobile network (4) when initiating a call from the visited public land mobile network (3) to the local public land mobile network (4). The electronic device (2) is configured to transmit a session initiation protocol (SIP) message to the IMS subnet of the local public land mobile network (4) in the step of sending a text message from the visited public land mobile network (3) to the local public land mobile network (4).

[0009] The access public land mobile network (3) included in the system (1) of the present invention is configured to provide 4G wireless access to the electronic device (2) through at least one eNodeB (evolved Node B) type network element (NE); ensure the management of data traffic of the roaming electronic device (2) through its own at least one service gateway (SGW) type network element (NE); format the incoming call detail records through its own at least one intermediary system to ensure that the call detail records are directed to the subsystem; ensure that a roaming agreement is reached and the data usage is calculated based on the aggregated data through its own wholesale team; ensure that information on the use of the access public land mobile network (3) by the electronic device (2) is requested from each foreign operator through its own regulatory agency; and ensure that information on the use of the access public land mobile network (3) by the electronic device (2) is obtained through its own IPX (Internet Packet Exchange) The network element (NE) of the form of a mobile switching (MME) ensures the intermediate signaling and intermediate data transmission realized by the local public land mobile network (4), and reduces the number of connections by directly establishing a connection with the local public land mobile network (4); through its own MME (mobile management entity) type network element (NE), ensures the execution of network selection and mobility management transactions for subscribers, and stores descriptions that enable subscribers to perform VoLTE roaming; through its own SGW-C type network element (NE), ensures that the service gateway type network element (NE) can provide services on the signaling side in the CUPS (control plane and user plane separation) architecture.

[0010] The access public land mobile network (3) included in the system (1) of the present invention is configured to terminate the GTP tunnel through its own network element (NE) in the form of a packet gateway (PGW) and direct the IMS traffic to the IMS network; and ensure that SIP signaling is executed at the IMS network entrance through its own network element (NE) in the form of a session border controller (SBC).

[0011] The server (5) included in the system (1) of the present invention is configured to establish a connection with a network element (NE) in the form of a service gateway (SGW) on an access public land mobile network (3), analyze an invitation message transmitted from an electronic device (2) to an IMS subnet of a local public land mobile network (4), access data such as a caller, a called party, an equipment identity number (IMEI), and information about a cell where the call occurs in the call; detect the start of a call ringing through a ringing message transmitted to the electronic device (2); and detect the completion of a call through a "bye" message transmitted from the electronic device (2) to the IMS subnet of the local public land mobile network (4). The server (5) is configured to generate a call detail record of voice and video data related to the electronic device (2) in VoLTE roaming using the caller information, called party information, device identity number information, call cell information, ringing message information, and "bye" message information it has access to; when using the SMS data related to the electronic device (2) in VoLTE roaming to generate a call detail record, the sender, recipient, SMS center, sending time, and message size information in the session initiation protocol message are used. The server (5) is configured to generate a call detail record of the electronic device (2) by terminating the voice, video, and SMS data on the SGW-U type network element (NE) side of the GTP-U tunnel when determining that the network element (NE) in the form of a service gateway in the public land mobile network (3) uses the CUPS architecture (while generating the call detail record of the electronic device (2) in VoLTE roaming).

[0012] Industrial applicability of the invention In the system (1) of the present invention, a user (U) uses his electronic device (2) to perform VoLTE roaming on a visited public land mobile network (3) to initiate a call to a local public land mobile network (4). The server (5) establishes a connection with a network element (NE) in the form of a serving gateway (SGW) in the visited public land mobile network (3), analyzes the voice, video and SMS data related to the electronic device (2), and generates data of voice call detail records, video call detail records and SMS call detail records based on the voice, video and SMS data traffic information of the electronic device (2). Thereby, it is ensured that the loss of revenue caused by miscalculation in the agreement between the foreign network (VPLMN) and the local network (HPLMN) is eliminated.

[0013] The system (1) of the present invention ensures the generation of call detail records related to voice, video and SMS communications implemented by VoLTE roamers between a roaming network and their home network; decodes communication protocols such as Session Initiation Protocol (SIP), User Datagram Protocol (UDP), Transmission Control Protocol (TCP) and Internet Protocol (IP) by providing a service function when generating call detail records for VoLTE roamers; and provides visibility to business teams by generating call detail records for voice, video and SMS data of VoLTE roamers, thereby eliminating revenue losses caused by miscalculations in agreements between foreign networks and local networks.

[0014] The server (5) included in the system (1) of the present invention submits information and approval to the user in accordance with the data privacy principles and operates within the scope of the Act on Protection of Personal Information (KVKK).

[0015] Within these basic concepts, various embodiments of the inventive system (1) for generating voice, video and SMS call records from VoLTE roaming data can be developed; the invention is not limited to the examples disclosed herein, but essentially depends on the claims.

Claims

1. A system (1) for generating voice, video and SMS call records from VoLTE roaming data, the system being capable of generating call detail records related to voice and SMS communications of a foreigner (i.e., a roaming user) via VoLTE, and ensuring that the network can observe the network data traffic generated by the voice, SMS and video protocols with the foreigner, including: At least one electronic device (2) configured to enable a user (U) to communicate with others via at least one communication network; at least one visited public land mobile network (3) configured to enable a user (U) to communicate with others by ensuring that the user (U) roams in another area using his local SIM card, and having a plurality of network elements (NE); At least one local public land mobile network (4), configured to terminate roaming data (such as voice, video, SMS) from a visiting public land mobile network (3), comprising a communication network subscribed by a user (U), and having a plurality of network elements (NE); characterized in that: At least one server (5), included in the visited public land mobile network (3), is configured to generate a call detail record of voice data, a call detail record of video data and a call detail record of SMS data by using the voice, video and SMS data traffic information of the user (U) through its own voice call detail record generation function, when the roaming electronic device (2) operates roaming data from the visited public land mobile network (3) to the local public land mobile network (4); and ensure that the generated call detail record related to the electronic device (2) of the roaming user (U) is retained in the visited public land mobile network (3).

2. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to claim 1, characterized in that: The electronic device (2) is a smart device, such as a mobile phone, a tablet, or a computer, configured to enable a user (U) to initiate a call, send a text message, or send a video to a visiting public land mobile network (3) via VoLTE, ensuring that it is roaming on the visiting public land mobile network (3).

3. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to claim 1 or 2, characterized in that: The electronic device (2) is configured to send an invite message to the IMS subnet of the local public land mobile network (4) when initiating a call from the visited public land mobile network (3) to the local public land mobile network (4).

4. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to any of the preceding claims, characterized in that: The electronic device (2) is configured to transmit a Session Initiation Protocol (SIP) message to an IMS subnet of the local public land mobile network (4) in the step of sending a short message from the visited public land mobile network (3) to the local public land mobile network (4).

5. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to any of the preceding claims, characterized in that: The access public land mobile network (3) is configured to provide 4G wireless access to the electronic device (2) through at least one network element (NE) of the eNodeB (evolved Node B) type; ensure the management of data traffic of the roaming electronic device (2) through its own at least one network element (NE) of the serving gateway (SGW) type; format incoming call detail records through its own at least one intermediary system and ensure that the call detail records are directed to the subsystem; ensure the conclusion of roaming agreements and the calculation of data usage based on aggregated data through its own wholesale team; ensure the request of information on the use of the access public land mobile network (3) by the electronic device (2) from each foreign operator through its own regulatory body; and ensure the management of data traffic of the roaming electronic device (2) through its own IPX (Internetwork Packet Exchange) system. The network element (NE) of the form of a mobile switching (MME) ensures the intermediate signaling and intermediate data transmission realized by the local public land mobile network (4), and reduces the number of connections by directly establishing a connection with the local public land mobile network (4); through its own MME (mobile management entity) type network element (NE), ensures the execution of network selection and mobility management transactions for subscribers, and stores descriptions that enable subscribers to perform VoLTE roaming; through its own SGW-C type network element (NE), ensures that the service gateway type network element (NE) can provide services on the signaling side in the CUPS (control plane and user plane separation) architecture.

6. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to any of the preceding claims, characterized in that: The access public land mobile network (3) is configured to terminate the GTP tunnel through its own network element (NE) in the form of a packet gateway (PGW) and direct the IMS traffic to the IMS network; and to ensure that SIP signaling is performed at the IMS network entrance through its own network element (NE) in the form of a session border controller (SBC).

7. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to any of the preceding claims, characterized in that: The server (5) is configured to establish a connection with a network element (NE) in the form of a service gateway (SGW) on the access public land mobile network (3), analyze an invitation message transmitted from the electronic device (2) to the IMS subnet of the local public land mobile network (4), access data such as the caller, the called party, the equipment identity number (IMEI), and the cell information where the call occurs in the call; detect the start of the call ringing through a ringing message transmitted to the electronic device (2); and detect the completion of the call through a "bye" message transmitted from the electronic device (2) to the IMS subnet of the local public land mobile network (4).

8. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to any of the preceding claims, characterized in that: The server (5) is configured to generate a call detail record of voice and video data related to the electronic device (2) in VoLTE roaming using the caller information, called party information, device identity number information, cell information where the call occurred, ringing message information, and "bye" message information that it has access to; when using the SMS data related to the electronic device (2) in VoLTE roaming to generate the call detail record, the sender, recipient, SMS center, sending time, and message size information in the session initiation protocol message is used.

9. A system (1) for generating voice, video and SMS call records from VoLTE roaming data according to any of the preceding claims, characterized in that: The server (5) is configured to generate a call detail record of the electronic device (2) by terminating the voice, video and SMS data on the SGW-U type network element (NE) side of the GTP-U tunnel when determining that the network element (NE) in the form of a serving gateway in the access public land mobile network (3) uses the CUPS architecture (while generating a call detail record of the electronic device (2) in VoLTE roaming).

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