KR20230032555A - A system for performing service steering using real-time triggering in the event of a major disaster and a terminal therefor - Google Patents

Abstract

According to an embodiment of the present invention, a system for performing service steering comprises: a base station configured to report the number of simultaneous access terminals when a terminal attempts a first type of voice service connection; and a steering device configured to determine whether the number of simultaneous access terminals exceeds a threshold value of a maximum accommodation capacity criterion set according to a steering scenario and configured to transmit a fallback triggering request message to the base station to trigger a fallback procedure for providing a second type of voice service connection when the threshold value is exceeded as a determination result.

Description

A system for performing service steering using real-time triggering in the event of a major disaster and a terminal therefor}

The present invention relates to a technology for steering a service, and more particularly, to a system for performing service steering using real-time triggering and a terminal therefor.

In various cases, a temporary localized outbound call attempt and inbound call attempt explosion may occur. As a representative example, there is a possibility that there will be an explosion of connection attempts to the Voice Call Service to special numbers (Public Emergency Service, such as 119 and 112) and an explosion of local outgoing attempts within the disaster area and incoming calls to the disaster area in the event of a major disaster. high.

Korean Patent Publication No. 10-2014-0023988 (published on February 27, 2014)

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned conventional problems, and provides a system for performing service steering using real-time triggering capable of expanding voice call capacity by distributing voice services and a terminal therefor.

To achieve the above object, a system for performing service steering according to a preferred embodiment of the present invention includes a base station reporting the number of simultaneous access terminals when a terminal attempts connection to a first-class voice service; Determine whether the number of simultaneous access terminals exceeds a threshold of a maximum capacity criterion set according to the steering scenario, and as a result of the determination, if the threshold exceeds the threshold, trigger a fallback procedure for providing a second-class voice service connection. and a steering device for transmitting a fallback triggering request message to the base station.

When the base station receives the fallback triggering request message, it is characterized in that it transmits a fallback start message for causing the terminal to start a fallback.

When the terminal receives the fallback start message, it is characterized in that it transmits a request to proceed with the fallback procedure to the mobile Internet phone server.

The mobile internet phone server is characterized in that it provides connection to the second type voice service to the terminal in response to the request to proceed with the fallback procedure.

The steering device is characterized in that, before receiving the number of simultaneous access terminals, it transmits a response function activation request message requesting that a plurality of anchor devices, a plurality of base stations, and terminals activate a disaster response function.

The first type of voice service connection is a voice call connection, and the second type of voice service connection is a mobile Internet phone (mVoip) connection.

To achieve the above object, a terminal for performing service steering according to a preferred embodiment of the present invention includes a basic communication unit attempting to connect to a first-class voice service through a base station, and a second-class voice service connection in response to the attempt. and a fallback communication unit for requesting a fallback procedure to provide the second type of voice service connection when receiving a fallback start message for starting a fallback procedure for providing voice service connection.

After the request, the fallback communication unit camps on a mobile Internet phone server that provides connection to the second type of voice service and connects the second type of voice service through the mobile Internet phone server.

The first type of voice service connection is a voice call connection, and the second type of voice service connection is a mobile Internet phone (mVoip) connection.

The present invention temporarily distributes voice services to voice calls and mobile Internet phones (mVoip) through selective reallocation using different types of network infrastructure to expand voice call capacity. , it is possible to increase the connection success rate and more equally distribute the opportunity to connect to voice services. As a result, compared to the conventional method of providing services with the goal of providing services with the goal of maximal stability of limited resource limits allocated and divided in advance in each area of the existing 4G and 5G infrastructure, explosive traffic can be flexibly distributed and available The efficiency of resource utilization can be maximized depending on the situation.

1 is a diagram for explaining a communication system that performs service steering using real-time triggering according to an embodiment of the present invention.
2 is a block diagram illustrating a configuration of a terminal for performing service steering using real-time triggering according to an embodiment of the present invention.
3 is a flowchart illustrating a method of performing service steering using real-time triggering according to an embodiment of the present invention.
4 is a flowchart illustrating a method of performing service steering using real-time triggering according to an embodiment of the present invention.
5 is a flowchart illustrating a method of performing service steering using a template according to an additional embodiment of the present invention.
6 is a diagram for explaining a template for performing service steering using a template according to an additional embodiment of the present invention.

Hereinafter, a preferred embodiment in which a person skilled in the art can easily practice the present invention will be described in detail with reference to the accompanying drawings. However, in the detailed description of the operating principle of the preferred embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. This is to more clearly convey the core of the present invention without obscuring it by omitting unnecessary description. In addition, since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description, but this is not intended to limit the present invention to specific embodiments, It should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Additionally, when an element is referred to as being “connected” or “connected” to another element, it means that it is logically or physically connected or capable of being connected. In other words, it should be understood that a component may be directly connected or connected to another component, but another component may exist in the middle, or may be indirectly connected or connected.

In addition, terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "include" or "having" described in this specification are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or the other It should be understood that the above does not preclude the possibility of the presence or addition of other features, numbers, steps, operations, components, parts, or combinations thereof.

Now, a method for receiving channel state information according to an embodiment of the present invention and an apparatus supporting the same will be described in detail with reference to the drawings. At this time, the same reference numerals are used for parts having similar functions and actions throughout the drawings, and overlapping descriptions thereof will be omitted. In addition, in order to avoid obscuring the concept of the present invention, well-known structures and devices may be omitted or may be shown in block diagram form centering on core functions of each structure and device.

First, a network environment to which an embodiment of the present invention is applied will be described. 1 is a diagram for explaining a communication system that performs service steering using real-time triggering according to an embodiment of the present invention.

Referring to FIG. 1, the communication system according to an embodiment of the present invention includes a steering device (100, DRAS: Disaster Response/Analytics System), a terminal 200, a mobile Internet phone server 300, and wireless access management of 4G and 5G device (410, 510), 4G and 5G base stations (420, 520), 4G and 5G core networks (430, 530), session control device 440, telephone application server 450, 4G and 5G data network (460, 540). The core networks 430 and 530 of 4G and 5G include a plurality of anchor devices, which include an access and mobility management function (AMF), a policy control function (PCF), and a session management device ( Session Management Function (SMF), User Plane Function (UPF), Mobility Management Entity (MME), Serving Gateway (SGW), Packet Data Network (PGW), Access A gateway device (AGW: Access Gateway System) and the like can be exemplified.

The steering device 100 may be a Disaster Response/Analytics System (DRAS). The steering device 100 is for determining whether to fall back according to whether or not a corresponding network can accommodate an explosion in traffic such as an outbound call attempt or an inbound call attempt. Such traffic explosion may exemplify, for example, a disaster situation. The steering device 100 presets a steering scenario for determining whether or not to steer when traffic increases. In this case, a criterion for a maximum capacity of a network corresponding to each steering scenario may be set. Steering scenarios are classified according to, for example, events, accidents, earthquakes, large-scale infectious diseases, and the like, and a maximum capacity reference threshold is preset according to the steering scenario. For example, the threshold may be set as a ratio such as 85%, 90%, or 95% of limit access.

The steering device 100 may be notified of traffic explosion. Then, the steering device 100 may activate a traffic increase response function in the anchor devices 430 and 530, the base stations 420 and 520, and the terminal 200 of the core network. In this state, the steering device 100 may receive the number of simultaneous access terminals 200 from the base station 420 . Then, the steering device 100 determines whether or not the number of concurrently connected terminals 200 exceeds the threshold of the maximum capacity criterion set according to the steering scenario, and if the number of concurrently connected terminals 200 exceeds the threshold, the steering device 100 determines service steering. Service steering may be to switch a type 1 voice service connection to a type 2 voice service connection. In addition, the first type of voice service may be a voice call connection, and the second type of voice service may be a mobile Internet phone (mVoip) connection. When service steering is determined, the steering device 100 transmits a fallback triggering request (mVoIP Fallback Triggering) message for triggering a fallback procedure to the base station 420 through a radio access management device (RAN-EMS).

The base station 420 calculates the number of simultaneous access terminals 200 when the terminal 200 requests the first type of voice service connection, that is, a voice call connection, to the base station 420, and the steering device ( 100) can be reported. Correspondingly, when the base station 420 receives the mVoIP Fallback Triggering message from the steering device 100, the base station 420 sends a fallback initiation message to the terminal 200 to start a fallback to the terminal 200. forward to

The mobile Internet phone server (300, mVoIP Server) is for providing a mobile Internet phone (mVoIP) connection service to the terminal 200. The session control device 440 may be a Call Session Control Function (CSCF), and is for session connection between terminals 200. The telephony application server 450 may be a telephony application server (TAS) and is for providing additional services to the terminal 200 .

When the terminal 200 receives the fallback initiation message, the terminal 200 triggers a fallback procedure (mVoIP fallback procedure) and provides a second type of voice service through the wireless access management device 410. A request is made to a network device (4G Core System), for example, the mobile Internet phone server 300, to proceed with a fallback procedure. Accordingly, the mobile Internet phone server 300 can connect the mobile Internet phone (mVoIP) to the terminal 200 according to a fallback procedure.

Next, a configuration of a terminal for performing service steering using real-time triggering according to an embodiment of the present invention will be described. 2 is a block diagram illustrating a configuration of a terminal for performing service steering using real-time triggering according to an embodiment of the present invention. Referring to FIG. 2 , a terminal 200 according to an embodiment of the present invention includes a basic communication unit 210 and a fallback communication unit 220.

The basic communication unit 210 is for connection to the first type of voice service, that is, connection to a voice call. The basic communication unit 210 attempts to connect the first type of voice service to the connected base stations 410 and 420 when there is an input for a call from the user. Meanwhile, the steering device 100 may transmit a response function enable request message requesting the terminal 200 to activate a traffic increase response function. In this case, the basic communication unit 210 may activate the fallback communication unit 220.

The fallback communication unit 220 is for a second type of voice service connection, that is, a mobile Internet phone (mVoip) connection. After the fallback communication unit 220 is activated by the basic communication unit 210, the basic communication unit 210 connects to the second-class voice service according to the decision of the steering device 100 in response to the first-class voice service connection attempt. A fallback start message may be received that causes the fallback procedure to be started to provide In this case, the fallback communication unit 220 requests the mobile Internet phone server 300 to perform a fallback procedure to provide the second type of voice service connection, camps in the mobile Internet phone server 300, and the mobile Internet phone server ( 300) to connect the second kind of voice service. In other words, the fallback communication unit 220 of the terminal 200 can connect to the second type of voice service, that is, mobile Internet phone (mVoip) through the mobile Internet phone server 300.

Next, a method of performing service steering using real-time triggering according to an embodiment of the present invention will be described. 3 is a flowchart illustrating a method of performing service steering using real-time triggering according to an embodiment of the present invention.

In step S110, the steering device 100 presets a steering scenario for determining whether or not to steer when traffic increases. In this case, a maximum capacity criterion set according to the steering scenario may be set.

Then, the steering device 100 sends information to the anchor devices 430 and 530, the base stations 420 and 520, the radio access management devices 410 and 510, and the terminal 200 of the core network in step S120. Transmits a Response Function Enable Request message requesting activation of a traffic explosion response function.

The anchor devices (430, 530), base stations (NG-RAN, eNB), radio access management devices (410, 510), and terminal 200, which have received the response function activation request message, perform a traffic explosion response function (Function After activating Set), wait for the triggering point.

At this time, the terminal 200 may attempt to connect to the first type voice service through the base station 420 to which the terminal 200 has accessed. Here, the first type of voice service connection may be a voice call connection. In this case, the base station 420 accessed by the terminal 200 reports the number of concurrently connected terminals 200 to the steering apparatus 100 through the wireless access management apparatus 410 in step S140.

Upon receiving the number of simultaneous access terminals 200 , the steering device 100 determines whether or not the number of concurrent access terminals 200 exceeds a threshold value set according to the steering scenario in step S150 . Steering scenarios are classified according to, for example, peddlers, festivals, accidents, earthquakes, large-scale infectious diseases, and the like, and a maximum capacity criterion threshold is preset according to the steering scenario. For example, the threshold may be set to a ratio of 85%, 90%, 95%, etc. of limit access.

As a result of determination in step S150, if the number of simultaneous access terminals 200 does not exceed the threshold value, the steering device 100 does not determine service steering and allows a normal process to be performed.

On the other hand, as a result of determination in step S150, if the number of simultaneous access terminals 200 exceeds the threshold, the steering device 100 determines service steering to switch the first-type voice service connection to the second-type voice service connection. do. The first type of voice service may be a voice call connection, and the second type of voice service may be a mobile Internet phone (mVoip) connection. Accordingly, the steering device 100 sends a fallback triggering request (mVoIP Fallback Triggering) message for triggering a fallback procedure for switching the first-type voice service connection to the second-type voice service connection in step S160 for wireless access management. via the device 410 to the base station 420.

Then, the base station 420 transmits a fallback start message (Fallback Signal Msg: 5G mVoIP/4G mVoIP Fallback Initiation) to start the fallback to the terminal 200 in step S170.

Accordingly, the terminal 200 triggers the fallback procedure (mVoIP fallback procedure) in step S180 and requests the wireless access management device 410 to proceed with the fallback procedure.

Then, the wireless access management device 410 performs the fallback procedure in step S190 and requests the mobile Internet phone server 300 that provides the second type of voice service connection to proceed with the fallback procedure. Accordingly, the terminal 200 camps in the mobile Internet phone server 300, and the mobile Internet phone server 300 can provide the terminal 200 with a second type of voice service connection. In other words, the terminal 200 can connect to the second type of voice service, that is, mobile Internet phone (mVoip) through the mobile Internet phone server 300.

Then, the above-described service steering procedure will be described through a more specific example. 4 is a flowchart illustrating a method of performing service steering using real-time triggering according to an embodiment of the present invention. In FIG. 4, the calling terminal 201 is the terminal 200 of the calling subscriber, and the called terminal 202 is the terminal 200 of the called subscriber. The embodiment of FIG. 4 assumes a situation in which the calling terminal 201 camping at the originating base station 421 wants to connect a call with the called terminal 202 camping at the called base station 422 .

Referring to FIG. 3 , an INVITE message is sent from the calling terminal 201 in steps S201 and S202 according to an attempt of the calling terminal 201 to connect to the first type of voice service, that is, to connect to a voice call. It is transmitted to the telephony application server 450 (TAS) through the originating base station 421 and the session control device 440 (CSCF).

The telephone application server 450 checks whether the called subscriber is subscribed to the caller ID service in step S203. At this time, it is assumed that the called subscriber of the called terminal 202 is subscribed to the caller identification service.

If the called subscriber subscribes to the caller identification service, the telephone application server (TAS) transmits the INVITE message including the P-Asserted-Identity header in step S204, so that the P-Asserted-Identity header is sent to the called subscriber. to be conveyed In this step S204, the INVITE message is transmitted to the session control device 440. Then, the session control device 440 transmits an INVITE message to the called terminal 202 including the P-Asserted-Identity header in step S205. Accordingly, the called terminal 202 can display the calling number of the calling terminal 201 through the information of the P-Asserted-Identity header.

Then, the called terminal 202 requests call setup for the incoming call from the called base station 422 in step S206.

The receiving base station 422 is connected to the steering device 100 through the wireless access management device 410 (not shown in FIG. 3) in step S207. report the number

Upon receiving the number of simultaneous access terminals 200, the steering device 100 determines whether or not the number of concurrent access terminals 200 exceeds a threshold value set according to the steering scenario in step S208. At this time, it is assumed that the number of simultaneous access terminals 200 exceeds the threshold. Then, the steering device 100 determines service steering to switch the first-type voice service connection to the second-type voice service connection. Accordingly, the steering device 100 transmits a fallback triggering request (mVoIP Fallback Triggering) message for triggering the fallback procedure to the called base station 422 through the wireless access management device 410 in step S209.

The called base station 422 transmits a fallback initiation message (mVoIP Fallback Initiation) to start the fallback to the called terminal 202 in step S210.

Then, the called terminal 202 exchanges a fallback message with the mobile Internet phone server 300 that provides the second type of voice service, that is, the mobile Internet phone connection, in steps S211 and S212, and returns to the mobile Internet phone server 300. camping on Accordingly, in steps S213 to S224, the called terminal 202 proceeds with the incoming call establishment (VoLTE Call Setup) procedure, and the called terminal 202, the mobile Internet phone server 300, the session control device (CSCF) and the outgoing call A voice traffic path between the terminals 201 is configured to connect the second type of voice service, that is, mobile Internet phone (mVoIP).

Meanwhile, according to an additional embodiment of the present invention, service steering may be performed using a template. 5 is a flowchart illustrating a method of performing service steering using a template according to an additional embodiment of the present invention. 6 is a diagram for explaining a template for performing service steering using a template according to an additional embodiment of the present invention.

Referring to FIG. 5, the steering device 100 includes anchor devices 430 and 530, base stations 420 and 520, and radio access management of a core network so that service steering can be performed when traffic increases in step S310. The template is delivered to the devices 410 and 510 and the terminal 200 . As shown in FIG. 6 , the template includes criteria for performing fallback by a corresponding device (System) for each steering scenario (Disaster SC#N) and a required action (Required Action). Here, the criterion is for determining whether or not to fall back according to whether the network is accommodating, and may be based on the maximum capacity of the network corresponding to each steering scenario. Steering scenarios are classified according to, for example, events, accidents, earthquakes, large-scale infectious diseases, and the like, and a maximum capacity reference threshold is preset according to the steering scenario. For example, the threshold may be set as a ratio such as 85%, 90%, or 95% of limit access. In addition, it may be based on a state in which the fallback message is received. Upon receiving the template, the anchor devices 430 and 530, the base stations (NG-RAN and eNB), the radio access management devices 410 and 510, and the terminal 200 activate a traffic explosion response function (Function Set) in step S320. After that, it waits for the triggering point.

Next, the steering device 100 monitors the traffic in step S330, and when the traffic continuously increases from a predetermined reference value to a predetermined time or more, the anchor devices 430 and 530 of the core network, the base station 420, 520), the wireless access management devices 410 and 510, and the terminal 200 transmit a pre-triggering message (Pre-Triggering Signal Msg). This is a case in which traffic is predicted to exceed the limit of simultaneous access. Assuming that the maximum capacity standard threshold is set to 95% of limit accessors, the case where traffic continuously increases over a predetermined period of time at 85% of limit accessors can be exemplified.

The base station 420 counts the number of emergency connections using the second type voice service through the wireless access management device 410 in step S340 and transmits the count to the steering device 100. Here, the number of emergency connections using the second type of voice service may be the number of emergency connections using mobile Internet phone (Emergency mVoIP Count).

Then, the steering device 100 sets the fallback flag in step S350 and transfers the fallback flag to the base station 420 through the wireless access management device 410 . Here, the fallback flag indicates whether fallback is possible in consideration of the capacity of the second type voice service. At this time, the steering device 100 sets a fallback flag based on the number of emergency connections using the second type of voice service and the maximum capacity indicating the limit of simultaneous access.

At this time, the terminal 200 may attempt to connect to the first type voice service through the base station 420 to which the terminal 200 has accessed. Here, the first type of voice service connection may be a voice call connection. In this case, the base station 420 accessed by the terminal 200 counts the number of simultaneous access terminals 200 in step S360, and the number of simultaneous access terminals 200 exceeds the threshold of the maximum capacity standard according to the template, If fallback to the type 2 voice service is possible according to the fallback flag, a fallback start message for starting a fallback procedure for switching the type 1 voice service connection to the type 2 voice service connection is delivered in step S370. do.

Accordingly, the terminal 200 triggers a fallback procedure (mVoIP Fallback Procedure) in step S380 and provides a second type of voice service connection through the wireless access management device 410. 300) is requested to proceed with the fallback procedure. Accordingly, the terminal 200 camps in the mobile Internet phone server 300, and the mobile Internet phone server 300 can provide the terminal 200 with a second type of voice service connection. In other words, the terminal 200 can connect to the second type of voice service, that is, mobile Internet phone (mVoip) through the mobile Internet phone server 300.

The method according to an embodiment of the present invention may be provided in the form of a computer readable medium suitable for storing computer program instructions and data. Such a computer-readable recording medium may include program commands, data files, data structures, etc. alone or in combination, and includes all types of recording devices storing data that can be read by a computer system. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROMs (Compact Disk Read Only Memory) and DVDs (Digital Video Disks). Optical media), magneto-optical media such as floptical disks, and program instructions such as ROM (Read Only Memory), RAM (RAM, Random Access Memory), flash memory, etc. and a hardware device specially configured to do so. In addition, the computer-readable recording medium is distributed in computer systems connected through a network, so that computer-readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the technical field to which the present invention belongs.

Although the above has been described and illustrated in relation to preferred embodiments for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as shown and described in this way, without departing from the scope of the technical idea. It will be readily apparent to those skilled in the art that many changes and modifications can be made to the present invention. Accordingly, all such appropriate changes and modifications and equivalents should be regarded as falling within the scope of the present invention.

The present invention relates to a system for performing service steering using real-time triggering and a method therefor. By distributing voice services into voice calls and mobile Internet telephony (mVoip) to expand voice call capacity, it is possible to increase the connection success rate and more equally distribute voice service connection opportunities. As a result, compared to the conventional method of providing services with the goal of providing services with the goal of maximal stability of limited resource limits allocated and divided in advance in each area of the existing 4G and 5G infrastructure, explosive traffic can be flexibly distributed and available The efficiency of resource utilization can be maximized depending on the situation. The present invention has industrial applicability because it is not only commercially available or commercially viable, but also realistically and clearly practicable.

100: steering device 200: terminal
300: mobile Internet phone server 410, 510: wireless access management device
420, 520: base station 430, 530: core network
440: session controller 450: phone application server
460, 540: data network

Claims (8)

a base station reporting the number of simultaneous access terminals when a terminal attempts to connect to a first type voice service; and
It is determined whether or not the number of simultaneous access terminals exceeds a threshold of a maximum capacity criterion set according to the steering scenario, and as a result of the determination, if the threshold is exceeded, a fallback procedure for providing a second-class voice service connection is triggered. a steering device for transmitting a fallback triggering request message to the base station;
characterized in that it includes
A system for performing service steering. According to claim 1,
the base station
Upon receiving the fallback triggering request message, the terminal transmits a fallback start message for starting a fallback;
The terminal
When the fallback start message is received, a request to proceed with the fallback procedure is transmitted to the mobile Internet phone server.
A system for performing service steering. According to claim 2,
The mobile Internet phone server
Characterized in that a second type of voice service connection is provided to the terminal in response to the request to proceed with the fallback procedure.
A system for performing service steering. According to claim 1,
The steering device
Before receiving the number of simultaneous access terminals, a response function activation request message requesting to activate a traffic explosion response function to an anchor device, a base station, a radio access management device, and a terminal is transmitted.
A system for performing service steering. According to claim 1,
The first type of voice service connection is a voice call connection,
Characterized in that the second type of voice service connection is a mobile Internet phone (mVoip) connection
A system for performing service steering. a basic communication unit attempting to connect to a first-class voice service through a base station; and
a fallback communication unit requesting a fallback procedure to provide a second-class voice service connection when receiving a fallback start message for starting a fallback procedure for providing a second-class voice service connection in response to the attempt;
characterized in that it includes
Terminal for performing service steering. According to claim 6,
The fallback communication unit
After the request, camping in a mobile Internet phone server that provides connection to the second type of voice service and connecting the second type of voice service through the mobile Internet phone server.
Terminal for performing service steering. According to claim 6,
The first type of voice service connection is a voice call connection,
Characterized in that the second type of voice service connection is a mobile Internet phone (mVoip) connection
Terminal for performing service steering.

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