KR20170103557A - System and method for providing QoS on demand service in 5G network - Google Patents

Abstract

The present invention relates to a system and method for providing the quality of a 5G service, and more particularly, to a system and method for providing the quality of a 5G service according to the demand of a subscriber, capable of allocating a service quality policy according to the quality of the service which the subscriber demands. Also, according to the present invention, provided are the system and the method for providing the quality of a 5G service according to the demand of a subscriber, the system including: a PCRF which changes the service quality policy according to a request to change the service quality policy; a request reflecting server for requesting the change of the service quality policy from the PCRF upon receiving a service quality change request signal from a communication terminal; and a gateway for managing data use of the communication terminal in accordance with the change of the service quality policy of the PCRF.

Description

[0001] System and method for providing 5G service quality according to subscriber requests [

The present invention relates to a 5G service quality providing system and method, and more particularly, to a 5G service quality providing system and method according to a subscriber request for allocating a service quality policy according to a service quality requested by a subscriber.

Generally, a mobile communication system has been developed to provide voice service while ensuring the user's activity.

However, the mobile communication system is gradually expanding not only to voice but also to data service, and now it has developed to the extent of providing high-speed data service.

However, there is a shortage of resources in a mobile communication system in which a current service is provided, and a more advanced mobile communication system is demanded because users demand a higher speed service.

As a system under development in the next generation mobile communication system in response to this demand, standard works for LTE (Long Term Evolution) are under way in the 3rd Generation Partnership Project (3GPP).

LTE is a technology that implements high-speed packet-based communication with transfer rates of up to 100 Mbps. Various methods are discussed for this purpose. For example, there is a method of reducing the number of nodes located on a communication path by simplifying the structure of a network, and a method of approaching wireless protocols to a wireless channel as much as possible.

Efforts are also being made to develop an improved 5G or pre-5G communication system to meet the growing demand for wireless data traffic after the commercialization of 4G communication systems.

For this reason, a 5G communication system or a pre-5G communication system is called a system after a 4G network (Beyond 4G network) communication system or after a LTE system (Post LTE).

To achieve a high data rate, 5G communication systems are being considered for implementation in very high frequency (mmWave) bands (e.g., 60 gigahertz (60GHz) bands).

In order to mitigate the path loss of the radio wave in the very high frequency band and to increase the propagation distance of the radio wave, in the 5G communication system, beamforming, massive MIMO, full-dimension MIMO (FD-MIMO ), Array antennas, analog beam-forming, and large scale antenna technologies are being discussed.

In order to improve the network of the system, the 5G communication system has developed an advanced small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, (D2D), a wireless backhaul, a moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Have been developed.

In addition, in the 5G system, the Advanced Coding Modulation (ACM) scheme, Hybrid FSK and QAM Modulation (FQAM) and Sliding Window Superposition Coding (SWSC), the advanced connection technology, Filter Bank Multi Carrier (FBMC) (non-orthogonal multiple access), and SCMA (sparse code multiple access).

As the network of the mobile communication system evolves to 5G, the speed supported by the base station is higher than the current 10 times, which is expected to exceed the required bandwidth of the terminal or the service.

Accordingly, it is necessary to control a realistic quality of service (QoS) based on the required bandwidth of the terminal or the service.

In addition, to ensure efficient investment and profitability of the 5G network, it is necessary to launch services that link speed and rate.

Korean Patent Publication No. 2013-0116391 Domestic public patent 2012-0120308

The present invention is to provide a 5G service quality providing system and method according to a subscriber request for allocating a service quality policy according to a service quality requirement of a subscriber in order to satisfy the above-mentioned need.

To this end, the present invention provides a 5G service quality providing system and method according to a subscriber request for allocating a service quality policy according to a service quality request of a subscriber.

It is another object of the present invention to provide a system and method for providing 5G service quality according to a subscriber request in which service quality can be controlled by detecting a service pattern of a subscriber.

In addition, the present invention provides a system and method for providing 5G service quality according to a subscriber request in which a service quality can be controlled by detecting a threshold value designated by a subscriber.

According to an aspect of the present invention, there is provided a service quality policy change control method comprising: a PCRF for changing a service quality policy according to a service quality policy change request; A request reflecting server for requesting a change of a service quality policy with the PCRF upon receiving a service quality change request signal from a communication terminal; And a gateway for managing data usage of the communication terminal according to a change in the service quality policy of the PCRF.

The PCRF of the present invention further includes a billing server for changing the billing policy in accordance with the change of the service quality policy and performing the billing based on the data usage of the communication terminal according to the billing policy change of the PCRF .

According to another aspect of the present invention, there is further provided a subscriber profile repository for changing a total data usage amount of a subscriber according to a change in a service quality policy of the PCRF.

In addition, the communication terminal according to an aspect of the present invention transmits a service quality up request signal when an up menu is selected by a user according to driving of a user request reflecting application including an up menu and a down menu, Upon receipt of the service quality uplink request signal from the communication terminal, the PCRF requests the UP change of the service quality policy, and the PCRF changes the service quality up according to the uplink change request of the service quality policy.

In addition, the communication terminal according to an aspect of the present invention transmits a service quality downlink request signal when a downward menu is selected by a user in response to a user request reflecting application including an up menu and a down menu, Upon receiving the service quality downlink request signal from the communication terminal, the PCRF requests downward modification of the service quality policy, and the PCRF downgrades the service quality according to the downlink change request of the service quality policy.

In addition, the communication terminal of the present invention transmits a service quality uplink request signal when it is recognized that the user request reflecting app is driven and uses the service quality uplink transmission service, and the request reflecting server receives, from the communication terminal, Upon receiving the quality up request signal, the PCRF requests an upward change of the service quality policy. The PCRF changes the service quality up according to the up change request of the service quality policy.

In addition, when the communication terminal of the aspect of the present invention recognizes that the user demand reflecting application is driven and uses the service quality downlink transmission service, the request transmitting server transmits the service quality downlink request signal, Upon receiving the quality down request signal, the PCRF requests downward modification of the service quality policy. The PCRF changes the quality of service downward according to the downward change request of the service quality policy.

Also, the communication terminal according to an aspect of the present invention transmits a service quality down request signal when the user demand reflecting application is activated and the remaining usage amount is below a threshold, and the request reflecting server receives a service quality down request signal from the communication terminal Upon receiving the request, the PCRF requests downward modification of the service quality policy, and the PCRF downgrades the service quality according to the downward change request of the service quality policy.

According to another aspect of the present invention, there is provided a method of providing a service quality change request, the method comprising: (A) requesting a service quality policy change to a PCRF upon receiving a service quality change request signal from a communication terminal; (B) changing the service quality policy according to the service quality policy change request by the PCRF; And (C) the gateway includes managing the data usage of the communication terminal according to the change of the service quality policy of the PCRF.

According to another aspect of the present invention, (D) the PCRF includes a step of changing a billing policy by reflecting a change in a service quality policy; And (E) the billing server further comprises performing a charging based on data usage of the communication terminal in accordance with the charging policy change of the PCRF.

According to another aspect of the present invention, (F) the subscriber profile storage further comprises changing the total data usage of the subscriber according to the change in the quality of service policy of the PCRF.

In another aspect of the present invention, the step (A) includes the steps of: (A-1) transmitting, by the communication terminal, a service quality uplink request signal when the user request reflecting application recognizes a service quality up user request; (A-2) requesting the request reflex server to change the service quality policy to the subscriber profile repository upon receiving the service quality upgrade request signal from the communication terminal; And (A-3) the subscriber profile store requesting an upward modification of the service quality policy to the PCRF.

In addition, the step (A) of the other aspect of the present invention may further comprise: (A-1) transmitting, by the communication terminal, a service quality downlink request signal if the user- (A-2) requesting downward modification of a service quality policy to the subscriber profile storage when the request reflection server receives a service quality downlink request signal from the communication terminal; And (A-3) the subscriber profile repository requesting downward modification of the service quality policy to the PCRF.

In another aspect of the present invention, the step (C) further comprises: (C-1) if traffic is generated using the data of the communication terminal, causing the gateway to provide data according to a changed quality of service policy; (C-2) transmitting the traffic usage amount to the subscriber profile storage through the PCRF; (C-3) allocating a portion of the total usage amount as an allocation amount after subtracting the usage amount from the subscriber profile storage; (C-4) the subscriber profile repository transmitting an allocation amount to the gateway through the PCRF; And (C-5) the gateway includes providing data according to the quota.

According to another aspect of the present invention, there is provided a method for providing a service, the method comprising the steps of: (A) when traffic is generated using data from a communication terminal, (B) the gateway delivers the traffic usage to the subscriber profile storage via the PCRF, and the billing server performs billing according to a first charging policy according to the first quality of service policy; (C) Reflecting the user request When the application recognizes the user request of the service quality change, the communication terminal transmits a service quality change request signal; (D) requesting the service quality change policy to the PCRF when the request reflecting server receives the service quality change request signal from the communication terminal; (E) the PCRF adopts a second QoS policy and a second accounting policy in response to a service quality policy change request; (F) when traffic is generated using the data of the communication terminal, the gateway causes data to be provided according to a second quality of service policy; And (G) the gateway transfers traffic usage to the subscriber profile repository via the PCRF, and the billing server performs charging according to a second charging policy.

According to the present invention as described above, an efficient network can be realized by realistically controlling a high speed of 5G.

Also, according to the present invention, it is possible to improve customer satisfaction by realizing a user-centered real-time QoS control plan.

Further, according to the present invention, it is possible to improve sales and profitability in accordance with the diffusion of high-capacity contents.

1 is a configuration diagram of a 5G service quality providing system according to a subscriber request according to an embodiment of the present invention.
2 is a conceptual diagram illustrating total data usage in a 5G service quality providing system according to a subscriber request according to an embodiment of the present invention.
3 is a conceptual diagram illustrating a transmission rate provided for each mode in a 5G service quality providing system according to a subscriber request according to an embodiment of the present invention.
4 is a flowchart of a method for providing 5G service quality according to a subscriber request according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments will be described in detail below with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another Is used.

1 is a configuration diagram of a 5G service quality providing system according to a subscriber request according to an embodiment of the present invention.

Referring to FIG. 1, a 5G service quality providing system according to a subscriber request according to an embodiment of the present invention includes a communication terminal 100, an evolved NodeB (eNB) 200, a request reflecting server 300, a PCRF Policy and Charging Rule Function 400, a gateway 500, a Subscription Profile Repository (SPR) 600, and a billing server 700.

The communication terminal 100 may be referred to as another term such as a user equipment (UE), a mobile station (MS), a user terminal (UT), or a subscriber station (SS) .

The communication terminal 100 uses a mobile communication network in which an LTE network including an EUTRAN (Evolved Universal Terrestrial Radio Access Network) is interworked.

In addition, the communication terminal 100 may use a mobile communication network in which a WCDMA network including a UTRAN is interworked.

For example, a conventional mobile phone such as a cellular phone, a PCS phone, a GSM phone, a CDMA-2000 phone, a WCDMA phone, etc., and a mobile phone using a smart phone, a tablet PC and a 4G network, ).

In the communication terminal 100, a USIM card having an International Mobile Subscriber Identity (IMSI) value for identifying and authenticating a subscriber is inserted.

The communication terminal 100 is initially assigned a basic service quality (QoS) (for example, 1 Gbps) and a basic charging rate according to subscription of a subscriber's mobile communication service.

The communication terminal 100 may include a turbo button (a type of an upward menu), a normal button, and an echo button (downward) before executing the UHD streaming or the file sharing service (which may be referred to as a service quality uplink transmission service) When a Turbo button (that is, an upward menu is selected) is pressed by the user's operation in accordance with the driving of a user request reflecting application (hereinafter referred to as a user request reflecting application) Signal (e.g., 10 Gbps).

In addition, the communication terminal 100 may be operated according to the driving of a user request reflecting application including a turbo button, a normal button and an echo button before execution of e-mail, instant messenger, game or mVoIP (which may be referred to as a service quality downlink transmission service) When the eco button is pressed (i.e., the down menu is selected), the service quality down request signal (e.g., 1 Mbps) is transmitted.

After the above operation is completed, the communication terminal 100 displays a normal mode according to the operation of the user according to the driving of the user required reflecting app including the turbo button, the normal button and the echo button before executing the HD streaming and the web browsing, When the button is pressed, it transmits a service quality normalization request signal (for example, 1 Gbps).

Meanwhile, as described in the above embodiment, the communication terminal 100 may automatically detect the service quality of the user and transmit the service quality request signal according to the service quality request signal.

That is, the communication terminal 100 transmits a service quality uplink request signal (for example, 10 Gbps) when it is detected that the user-requested application is running and the user is using the UHD streaming or file sharing service.

In addition, the communication terminal 100 transmits a service quality down request signal (for example, 1 Mbps) when it is detected that the user-requested application is running and the user is using e-mail, instant messenger, game or mVoIP.

Then, when it is detected that the user's request reflecting application is stopped and the user stops using the UHD streaming service or the instant messenger and performs the HD streaming or the web browsing, the communication terminal 100 transmits a service quality normalization request signal (for example, 1 Mbps ).

On the other hand, in addition to the method of transmitting the service quality request signal according to the operation of the user or the service usage pattern of the user as described in the above embodiments, the communication terminal 100 may be configured to transmit the service quality request signal according to the threshold (For example, 1Mbps), and transmits the service quality downlink request signal (e.g., 1 Mbps) when the remaining usage amount is less than or equal to the threshold value.

Next, an evolved NodeB (eNB) 200 is a base station of an LTE communication network and provides mobile communication to the communication terminal 100 through a wireless interface. The base station 200 has radio resource management (RRM) functions such as radio bearer control, radio admission control, dynamic radio resource allocation, load balancing and intercell interference control (ICIC) as its main functions. And performs service quality control.

Meanwhile, when the service quality upgrade request signal is received from the communication terminal 100, the service quality normalization request signal and the service quality downlink request signal are received from the communication terminal 100, Request a policy change.

At this time, when the request reflecting server 300 receives a service quality up request signal from the communication terminal 100 as a service quality policy change requested to the PCRF 400, the request reflecting server 300 requests the policy change to the service quality upward .

If the request reflecting server 300 receives a service quality normalization request signal from the communication terminal 100 as another example of the policy change requested by the PCRF 400, do.

Another example of the policy change requested by the request reflecting server 300 to the PCRF 400 is a policy change request for downgrading the service quality in response to the service quality down request signal from the communication terminal 100 .

Next, the PCRF 400 may provide a service quality (QoS) policy based on a service and provide a flow-based charging rule by supplying a charging policy based on a flow.

The PCRF 400 collects service basic information from various service systems, verifies the authorization of the service according to the policy decision of the network operator, and transmits a QoS policy and a charging policy for network bandwidth allocation to the gateway 500 ).

That is, the PCRF 400 supplies the PCC rule to be applied to the call requested from the communication terminal 100 divided according to the identification information of the communication terminal. At this time, the identification information of the communication terminal 100 may be, for example, IMSI or MSISDN, MDN, IP address, or the like. At this time, the communication terminal 100

The PCRF 400 is interworked via the Rx interface.

The PCC rule is for detecting packets belonging to the service data flow and for applying the applied QoS. The PCC rule includes a rule name, a service identifier, a service data flow filter, a priority, a gate status, QoS information, a billing key, and a billing parameter. In this case, the QoS information is information about an authorized QoS (QoS Class Indicator), and includes a bit rate (transmission rate) applied to the uplink and the downlink.

That is, the playback quality of basic multimedia contents in the communication terminal 100 can be classified into a high quality type, a neutral quality type, a low quality type, etc. according to the QoS information.

The PCRF 400 generates a PCC rule in which an applied bit rate (transmission rate) is increased for the uplink and the downlink, and supplies the generated PCC rule to the gateway 500 do.

When the PCRF 400 receives a downlink quality of service request from the request reflecting server 300, the PCRF 400 generates a PCC rule in which the bit rate (transmission rate) is lowered for the uplink and the downlink, and supplies the PCC rule to the gateway 500 do.

In addition, the PCRF 400 adjusts the billing rate by changing the service quality policy, and supplies the adjusted billing policy to the gateway 500.

For example, the PCRF 400 may adjust the billing rate (for example, 10 times the conventional billing rate) when the service quality policy is changed to the service quality upward or change the billing rate (For example, 1/1000 times the conventional charging rate)

Next, the gateway 500 manages the QoS on the network and manages the subscriber information and location information of the communication terminal 100, and serves as a channel through which the communication terminal 100 enters the communication network.

The gateway 500 appropriately converts communication protocols on different networks and absorbs communication networks of different transmission schemes, thereby allowing connection of different models.

The gateway 500 may be a Gateway GPRS Support Node (GGSN) or a Packet Data Networks Gateway (PGW).

The GGSN is a serving node of an IP-based packet network that provides high-speed packet data service for packet data service.

The GGSN allocates an address (e.g., an IP address) to the communication terminal 100 for packet data service, manages a session, provides a routing function of packet data, and provides an interface for connecting different communication networks.

The PGW assigns an address (for example, an IP address) to the communication terminal 100, manages data packet connection, and generates accounting data in accordance with the data packet.

That is, the PGW may include policies and charging enforcement functions (PCEFs) for enforcing policy and accounting control (PCC) rules for each service data flow (SDF).

Accordingly, the PGW may be a policy and charging enforcement node (PCEN). The PGW can perform a number of additional functions such as packet filtering, depth packet inspection, and subscriber billing support.

In addition, the PGW can request a new policy and charging control (PCC) rule from the PCRF 400 by sending a create control request (CCR) message via the Gx interface.

In particular, the PGW provides a communication quality such as application rate and transmission rate of a rate plan given to each user by the CCR message exchanged with the PCRF 400, and transmits a call detail record (CDR) 700) so that the user can be charged and charged.

Next, the subscription profile storage 600 stores subscriber profile information (or subscriber information), which is subscription information of subscribers, for example, the type of service allowed to subscribers, subscription and activation information, (APN) information, subscriber category information, total (usable) usage amount (or a total allowable amount) information allocated to the subscriber, information on the charge method information and the charge amount information as subscriber's billing information, Remaining amount information, and charging additional amount information, and permanently manages the subscription of the specific service for each subscriber and the usage amount of the service for the usage monitoring operation.

The subscriber profile storage 600 transmits the information to the PCRF 400 to be referred to in determining the PCC rule.

In particular, when the service allowance of the communication terminal 100 subscribed to the real-time usage management type service is exhausted, the subscriber profile storage 600 transmits a message including the parameter indicating service blocking to the PCRF 400, (400) to change the policy of the corresponding service.

The billing server 700 applies the charge and quality of the user to the gateway 500 by the charging policy message such as the CCR and charges the corresponding fee.

The operation of the 5G service quality providing system according to the subscriber request according to an embodiment of the present invention will now be described.

The communication terminal 100 is allocated initial basic service quality (QoS) (for example, 1 Gbps) and a basic charging rate according to subscription of a subscriber's mobile communication service.

When the user presses the TUBO button in response to the user request reflecting application including the turbo button, the normal button and the echo button before the execution of the UHD streaming or the file sharing (service quality uplink transmission service) And transmits a service quality uplink request signal (for example, 10 Gbps).

In addition, the communication terminal 100 may receive an eco button (not shown) according to driving of a user request reflecting application including a turbo button, a normal button and an echo button before executing an e-mail, instant messenger, mVoIP, Is transmitted, it transmits a quality of service request signal (for example, 1 Mbps).

After the operation is completed, before the HD streaming or the web browsing is executed, if the normal button is pressed according to the driving of the user request reflecting application including the turbo button, the normal button and the echo button, Quality normalization request signal (for example, 1 Gbps).

Meanwhile, as described in the above embodiment, the communication terminal 100 may automatically detect the service quality of the user and transmit the service quality request signal according to the service quality request signal.

That is, when it is recognized that the user-reflected application is operated and the user is using the UHD streaming service, the communication terminal 100 transmits a service quality upgrade request signal (for example, 10 Gbps).

In addition, the communication terminal 100 transmits a service quality down request signal (for example, 1 Mbps) when it is detected that the user-reflected application is running and the user is using e-mail or instant messenger.

The communication terminal 100 receives a service quality normalization request signal (for example, 1 Mbps) when the user application reflecting application is activated and the user stops using the UHD streaming service, the instant messenger, or the like and performs web browsing or HD streaming. .

On the other hand, as described in the above embodiments, the communication terminal 100 detects a threshold value (for example, a remaining usage amount) designated by the user in addition to transmission of a service quality request signal according to the operation of the user or the service usage pattern of the user, Quality lower request signal (for example, 1 Mbps) in the case where the difference is less than or equal to the threshold value.

Meanwhile, when the service quality upgrade request signal is received from the communication terminal 100 or the service quality down request signal is received from the communication terminal 100, the request reflection server 300 receives the service quality upgrade request signal and transmits the service quality upgrade request signal to the PCRF 400 via the subscriber profile storage 600 Request a change in the quality of service policy.

At this time, when the request reflection server 300 receives a service quality upgrade request signal from the communication terminal 100 in response to the policy change requested to the PCRF 400, the request reflecting server 300 requests the policy change to the service quality upward.

Alternatively, when the request reflecting server 300 receives a service quality down request signal from the communication terminal 100 in response to a policy change requested to the PCRF 400, the request reflecting server 300 requests the policy change to lower the service quality accordingly.

As shown in FIG. 2, the subscriber profile storage 600 reflects the change of the service quality policy and controls the total usage amount (or the total allowable amount) allocated to the subscriber.

In other words, as shown in FIG. 2, when the transmission rate is increased to 10 Gbps, 5 GB is used as the total usage amount allocated to subscribers. When the transmission speed is normalized to 1 Gbps, 10 GB is used as the total usage amount allocated to subscribers. If the speed is lowered to 1 Mbps, 20 GB is the total amount allocated to the subscriber.

Next, the PCRF 400 generates a PCC rule in which the applied bit rate (transmission rate) is increased for the uplink and the downlink when receiving the request for quality of service upgrade from the request reflecting server 300, and transmits the PCC rule to the gateway 500 Supply.

When the PCRF 400 receives a downlink quality of service request from the request reflecting server 300, the PCRF 400 generates a PCC rule in which the bit rate (transmission rate) is lowered for the uplink and the downlink, and supplies the PCC rule to the gateway 500 do.

In addition, the PCRF 400 adjusts the billing rate by changing the service quality policy, and supplies the adjusted billing policy to the gateway 500.

For example, the PCRF 400 may adjust the billing rate (for example, 10 times the conventional billing rate) when the service quality policy is changed to the service quality upward or change the billing rate (For example, 1/1000 times the conventional charging rate)

The gateway 500 reflects the service quality policy determined from the PCRF 400 and provides a communication service to the communication terminal 100.

That is, as shown in FIG. 3, when the turbo mode is performed by pressing the turbo button in the user request reflecting application of the communication terminal 100, the gateway 500 provides the transmission speed of 10 Gbps to proceed with UHD streaming or file sharing .

3, if the echo mode is performed by pressing the echo button in the user request reflecting application of the communication terminal 100, the gateway 500 provides the messenger or the mVoIP service by providing the transmission speed of 1 Mbps.

In addition, the gateway 500 adjusts the charging rate by reflecting the charging policy determined from the PCRF 400 (for example, 10 times the conventional charging rate) and downgrades the charging rate (for example, 1 / 1000 times).

Meanwhile, the billing server 700 receives the charging rate according to the charging policy determined by the PCRF 400 at the gateway 500, and charges the corresponding charges.

4 is a flowchart of a method for providing 5G service quality according to a subscriber request according to an embodiment of the present invention.

Referring to FIG. 4, in a method of providing 5G service quality according to a subscriber request according to an embodiment of the present invention, when traffic is generated by data use in the communication terminal 100 (S100), the gateway 500 controls the traffic usage (CCR: Create Control-Request) to the PCRF 400 (S102).

Then, the PCRF 400 notifies the subscriber profile storage 600 of the usage amount including the billing rate according to the data usage through an Assignment-Profile-Request (APR) (S104) 600) subtracts the usage.

Then, this fact is provided to the billing server so that the billing is performed according to the billing rate (for convenience, the billing rate is indicated by A and the billing rate is the normal billing rate).

On the other hand, the subscriber profile storage 600 sets a part of the remaining data amount as the quota from the total amount allocated to the user after deduction of the usage amount (generally, 20M is reduced in KT) The PCRF 400 informs the gateway 500 of the allocation amount using the control response signal CCA (S108), and transmits the allocation amount to the gateway 500 Informs the communication terminal 100 of the quota received from the PCRF 400 using the control response signal CCA at step S110 so that the communication terminal 100 can use the data according to the quota.

Meanwhile, when a user requesting event occurs, the user request reflecting application 110 installed in the communication terminal 100 transmits a service quality change request signal to the request reflecting server 300 (S120).

Here, the user requested event is a user-requested event that is generated by the communication terminal 100 in response to a user's request reflecting application including a turbo button, a normal button, and an echo button before UHD streaming execution or file sharing (service quality up transfer service) ) Button is pushed (at this time, a service quality up request signal (for example, 10 Gbps) is transmitted), and the communication terminal 100 transmits a service quality up request signal (At this time, transmits a service quality down request signal (for example, 1 Mbps)) according to the driving of the user's demand reflecting app including the normal button and the echo button, Before performing HD streaming or web browsing, a user who has a turbo button, a normal button and an echo button in the communication terminal 100 When the Normal button is pressed according to the driving of the request reflecting application (the service quality normalization request signal (for example, 1 Gbps) is transmitted).

Also, unlike the case of transmitting the service quality request signal by the user's operation as described above, the UHD streaming service is driven by the user's application reflecting application in the communication terminal 100 (At this time, a service quality uplink request signal (for example, 10 Gbps) is transmitted), it is determined that the user is reflecting the user request by the communication terminal 100 and the user is using e-mail or instant messenger (For example, 1 Mbps) is transmitted), it is determined that the user has performed the web browsing or HD streaming by stopping the use of the UHD streaming service, the instant messenger, etc., (At this time, transmits a service quality normalization request signal (for example, 1 Mbps)).

In addition to this, in addition to the operation of the user as described above or the transmission of the service quality request signal according to the service usage pattern of the user, the user request event may be detected by the user (for example, the remaining usage amount) (In this case, it may be possible to transmit a quality of service down request signal (for example, 1 Mbps)).

The service quality change request signal may be a service quality up request signal, a service quality down request signal, or a service quality normalization request signal.

Then, the request reflecting server 300 transmits a service change request signal to the subscriber profile storage 600 (S122).

Accordingly, the subscriber profile storage unit 600 transmits a service change request signal to the PCRF 400 (S124), and accordingly the PCRF 400 changes the service quality policy.

The PCRF 400 informs the gateway 500 of the changed service quality policy and the charging policy using the reauthorization request (RAR) (S126) And informs the base station 200 of the changed service quality policy using a request signal (MBREQ: Modify Bearer Request) (S128).

Thereafter, the gateway 500 informs the PCRF 400 of the quality of service change using a Reauthorization Answer (RAA) message to the PCRF 400 (S130).

The PCRF 500 transmits a service quality change response to the subscriber profile storage 600 in step S134 and the subscriber profile storage 600 transmits the response to the request reflecting server 300 in step S136, (300) transmits to the user request reflecting application 110 installed in the communication terminal 100 (S138) and informs that the service quality change is completed.

Meanwhile, the base station 200 changes the service quality according to the service quality policy and informs the gateway 500 using the MBREA signal (S132).

The subscriber profile storage 600 reflects the change of the service quality policy and controls the total usage amount (or the total allowable amount) allocated to the subscriber. For example, if the transmission rate is increased to 10 Gbps, 5 GB is used as the total amount allocated to the subscriber. If the transmission rate is normalized to 1 Gbps, 10 GB is used as the total amount allocated to the subscriber. If the transmission rate is lowered to 1 Mbps In this case, 20 GB is the total amount allocated to the subscriber.

Thereafter, when traffic is generated using the data of the communication terminal 100, the base station 200 and the gateway 500 provide data according to the changed service quality.

That is, when traffic is generated using the data of the communication terminal 100 (S140), the base station 200 and the gateway 500 control the service quality according to the service quality policy so that data is provided according to the changed service quality policy do.

In addition, when traffic occurs in the communication terminal 100 by using the data (S150), the gateway 500 provides the traffic usage amount to the PCRF 400 using a control request signal (CCR: Create Control-Request) (S152 ).

Then, the PCRF 400 notifies the subscriber profile storage 600 of the usage amount including the charging rate according to the data usage through the profile assignment request signal (APR) (S154) 600) subtracts the usage. The billing server then provides this information to the billing server so that the billing is performed according to the adjusted billing rate (the billing rate is indicated as B for the sake of convenience in the drawings and the billing rate is increased or decreased from the normal billing rate).

On the other hand, the subscriber profile storage 600 sets a part of the remaining data amount as the quota from the total amount allocated to the user after deduction of the usage amount (generally, 20M is reduced in KT) The PCRF 400 informs the gateway 500 of the quota using the control response signal CCA (Create Control-Answer) (S158), and the gateway 500 Informs the communication terminal 100 of the quota received from the PCRF 400 using the control response signal CCA in step S160 so that the communication terminal 100 can use the data according to the quota.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. And changes may be made without departing from the spirit and scope of the invention.

100: communication terminal 200: base station
300: request reflecting server 400: PCRF
500: Gateway 600: Subscriber profile store
700: Billing Server

Claims (15)

A PCRF that changes the quality of service policy in response to a service quality policy change request;
A request reflecting server for requesting a change of a service quality policy with the PCRF upon receiving a service quality change request signal from a communication terminal; And
And a gateway for managing data use of the communication terminal according to a change in the service quality policy of the PCRF. The method according to claim 1,
The PCRF may change the charging policy to reflect the service quality policy change,
And a billing server for performing billing based on data usage of the communication terminal according to the charging policy change of the PCRF. The method according to claim 1,
Further comprising a subscriber profile repository for changing the total data usage of the subscriber according to the change of the service quality policy of the PCRF. The method according to claim 1,
The communication terminal transmits a service quality up request signal when the up menu is selected by a user according to driving of a user request reflecting application including an up menu and a down menu,
The request reflecting server, when receiving the service quality up request signal from the communication terminal, requests the PCRF to change the service quality policy upward,
The PCRF is a 5G service quality providing system according to a subscriber request to change the service quality upward according to an upward change request of the service quality policy. The method according to claim 1,
The communication terminal transmits a service quality downlink request signal when a downward menu is selected by a user in response to a user request reflecting application including an uplink menu and a downlink menu,
The request reflecting server, when receiving the service quality downlink request signal from the communication terminal, requests downward modification of the service quality policy with the PCRF,
The PCRF is a 5G service quality providing system according to a subscriber request for changing a service quality downward according to a downward change request of a service quality policy. The method according to claim 1,
When the communication terminal detects that the user request reflecting app is running and uses the service quality uplink transmission service, it transmits a service quality uplink request signal,
The request reflecting server, when receiving the service quality up request signal from the communication terminal, requests the PCRF to change the service quality policy upward,
The PCRF is a 5G service quality providing system according to a subscriber request to change the service quality upward according to an upward change request of the service quality policy. The method according to claim 1,
The communication terminal transmits a service quality downlink request signal when it is determined that the user request reflecting application is running and is using the service quality downlink transmission service,
The request reflecting server, when receiving the service quality downlink request signal from the communication terminal, requests downward modification of the service quality policy with the PCRF,
The PCRF is a 5G service quality providing system according to a subscriber request for changing a service quality downward according to a downward change request of a service quality policy. The method according to claim 1,
The communication terminal transmits a service quality down request signal when the user demand reflecting application is activated and the remaining usage amount is below the threshold,
The request reflecting server, when receiving the service quality downlink request signal from the communication terminal, requests downward modification of the service quality policy with the PCRF,
The PCRF is a 5G service quality providing system according to a subscriber request for changing a service quality downward according to a downward change request of a service quality policy. (A) requesting the service quality change policy to the PCRF when the request reflecting server receives the service quality change request signal from the communication terminal;
(B) changing the service quality policy according to the service quality policy change request by the PCRF; And
(C) the gateway managing data usage of the communication terminal according to the change of the service quality policy of the PCRF. The method of claim 9,
(D) the PCRF modifying the charging policy to reflect a service quality policy change; And
(E) The billing server further comprises charging the communication terminal according to data usage according to the charging policy change of the PCRF. The method of claim 9,
(F) The method of claim 5, further comprising the step of changing the total data usage of the subscriber according to the change of the service quality policy of the PCRF. The method of claim 9,
The step (A)
(A-1) a step in which the communication terminal transmits a service quality uplink request signal when the user's request reflecting application recognizes a user request of an upward service quality;
(A-2) requesting the request reflex server to change the service quality policy to the subscriber profile repository upon receiving the service quality upgrade request signal from the communication terminal; And
(A-3) a step in which the subscriber profile repository requests an up change of a service quality policy with the PCRF. The method of claim 9,
The step (A)
(A-1) a step of transmitting a service quality down request signal to the communication terminal when the user's request reflecting application recognizes a downward user demand for the service quality;
(A-2) requesting downward modification of a service quality policy to the subscriber profile storage when the request reflection server receives a service quality downlink request signal from the communication terminal; And
(A-3) the subscriber profile store requesting downward modification of a service quality policy with the PCRF. The method of claim 9,
The step (C)
(C-1) if traffic is generated using the data of the communication terminal, the gateway causes data to be provided according to a changed quality of service policy;
(C-2) the gateway transmitting the traffic usage amount to the subscriber profile storage via the PCRF;
(C-3) allocating a portion of the total usage amount as an allocation amount after subtracting the usage amount from the subscriber profile storage;
(C-4) the subscriber profile repository transmits an allocation amount to the gateway through the PCRF; And
(C-5) The gateway is provided with data according to an allocation amount. (A) when traffic is generated using data from a communication terminal, causing the gateway to provide data according to a first quality of service policy;
(B) the gateway delivers the traffic usage to the subscriber profile storage via PCRF, and the billing server performs billing according to a first charging policy according to the first quality of service policy;
(C) Reflecting the user request When the application recognizes the user request of the service quality change, the communication terminal transmits a service quality change request signal;
(D) requesting the service quality change policy to the PCRF when the request reflecting server receives the service quality change request signal from the communication terminal;
(E) the PCRF adopts a second QoS policy and a second accounting policy in response to a service quality policy change request;
(F) when traffic is generated using the data of the communication terminal, the gateway causes data to be provided according to a second quality of service policy; And
(G) The gateway transmits the traffic usage amount to the subscriber profile storage via the PCRF, and the billing server performs charging according to the second charging policy.

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