JP6640134B2 - Communication amount management system and communication amount management method - Google Patents

Description

  The present invention relates to a traffic management system and a traffic management method.

  2. Description of the Related Art In recent years, as web services such as video distribution and online shopping have been generally used, the traffic volume (hereinafter, also referred to as “communication volume”) of terminals used by users has been increasing. In order to cope with the increasing traffic volume, a policy control technique for controlling communication for each user is known. In addition, by collecting the communication volume of the user and predicting an increase in the communication volume in the future, it is useful for determining whether or not the communication equipment needs to be increased (that is, the collected communication volume is used as data for provisioning). That is being done.

  In the policy control technology, a relay device such as an edge router or a PGW (Packet Data Network Gateway) controls a policy (for example, a communication band or a communication amount) to collect a communication amount for each user or perform traffic control. Has been realized. In such a policy control technique, a relay device that accommodates users in a network and a policy control server that manages policies of the relay device are arranged.

  The policy control server acquires the traffic of the user from the relay device, and transmits, to the relay device, for example, a control policy for narrowing the communication band of the user with a large traffic. Thereby, the relay device such as the edge router and the PGW can narrow down the communication band of the target user according to the control policy.

  As a technique for the policy control server to acquire the traffic of the user, a technique of notifying the traffic to the policy control server from the relay device when the traffic of the traffic exceeds the threshold value specified by the policy control server is 3GPP. (Third Generation Partnership Project) (Non-Patent Document 1).

  Here, since the policy control server has a limit on the signal amount that can be processed per unit time, it is necessary to reduce the signal amount for notifying the policy control server of the communication amount from the relay device. On the other hand, it is known that the communication volume of the user varies from time zone to time zone (Non-Patent Document 2). It is considered that the signal amount from the relay device to the policy control server increases.

  On the other hand, there is known a technique for reducing the amount of signals from a relay device to a policy control server (Patent Document 1). In Patent Literature 1, the amount of signal from the relay device to the policy control server is reduced by managing the communication amount by the relay device and determining the application of the policy rule.

  In addition, a technology is known in which a traffic volume of a relay device to a policy control server is controlled by predicting a traffic volume of a next user from a communication speed of a user and dynamically changing a threshold value (Non-Patent Document 1). Reference 3).

JP-A-2014-155096

ETSI TS 129 212 V11.9.0, 2013-07 "Results of Japan's Internet traffic", Telecommunications Division, Communications Bureau, Ministry of Internal Affairs and Communications, September 30, 2015 Mitsuru Kataoka, Takamitsu Narumi, Hideaki Iwata, "Proposal of Traffic Notification Method of PCRF in Traffic Trigger", September 2016 IEICE Society Conference

  However, the technique of Patent Document 1 has a problem that it is not specified in 3GPP. On the other hand, although the technology of Non-Patent Document 3 can suppress the load of the signal amount on the policy control server, the signal amount decreases (that is, the communication amount is notified, for example, at midnight (00:00 to 5:00)). (Frequency decreases). For this reason, when utilizing the traffic collected by the policy control server as the data for provisioning, there is a problem that the real-time property at midnight is reduced.

  The present invention has been made in view of the above points, and has an object to stably notify the communication amount.

  Therefore, in order to solve the above-mentioned problem, there is provided a traffic management system including a relay device connected to a terminal used by a user, and a server device that manages a traffic volume notified from the relay device. The apparatus includes: a determination unit configured to determine whether a communication amount of communication from the terminal exceeds a first threshold; and the determination unit determines that the communication amount exceeds the first threshold. And a first notification unit for notifying the server device of the communication amount, and the server device, when notified of the communication amount from the relay device, the communication amount of the user during a predetermined period. And a second notifying unit that notifies the relay device of the average calculated by the calculating unit as a second threshold value, the calculating unit calculating the average of the obtained results of the communication amount. Have.

  The communication amount can be stably notified.

1 is a diagram illustrating an example of an overall configuration of a communication amount notification system according to an embodiment of the present invention. It is a figure showing an example of a flow of processing of a communication amount notice system in an embodiment of the invention. It is a figure explaining an example of calculation of a traffic threshold. It is a figure showing an example of a rate of change of traffic in the same time zone. 1 is a diagram illustrating an example of a functional configuration of a communication amount notification system according to an embodiment of the present invention. It is a figure showing an example of traffic log information. It is a figure showing an example of traffic information. 5 is a flowchart illustrating an example of a process executed by the relay device according to the embodiment of the present invention. 6 is a flowchart illustrating an example of a process executed by the policy control server according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Overall configuration>
First, an overall configuration of a traffic notification system 1 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram illustrating an example of an overall configuration of a communication amount notification system 1 according to an embodiment of the present invention.

  As shown in FIG. 1, a communication amount notification system 1 according to an embodiment of the present invention includes a policy control server 10, a relay device 20, and one or more terminals 30. The communication amount notification system 1 is a system constructed in a core network such as an ISP (Internet Services Provider) or a telecommunications carrier.

  The terminal 30 is a computer used by a user. Specific examples of the terminal 30 include a PC (personal computer), a smartphone, a tablet terminal, and a wearable device. The terminal 30 communicates with the Internet via the relay device 20. By the terminal 30 communicating with the Internet via the relay device 20, the user of the terminal 30 can use various Web services such as video distribution and online shopping.

  The relay device 20 is a communication device such as an edge router or a PGW. The relay device 20 functions as, for example, a PCEF (Policy and Charging Enforcement Function). In addition, the relay device 20 includes a relay processing unit 200.

  The relay device 20 causes the relay processing unit 200 to transfer the communication from the terminal 30 to the Internet, and collect the traffic between the terminal 30 and the Internet for each user. Then, if the amount of traffic collected by the relay processing unit 200 exceeds a threshold value notified from the policy control server 10 (hereinafter, referred to as a “traffic value threshold”), the relay device 20 collects the collected traffic volume. Is notified to the policy control server 10.

  In addition, the relay device 20 controls the communication band, the communication amount, and the like of the target user terminal 30 by the relay processing unit 200 according to the control policy.

  The policy control server 10 is, for example, a computer or a computer system including one or more computers. The policy control server 10 functions, for example, as a PCRF (Policy and Charging Rules Function). Further, the policy control server 10 includes a policy control processing unit 100 and a traffic log storage unit 110.

  The policy control server 10 stores the communication amount notified from the relay device 20 by the policy control processing unit 100 in the communication amount log storage unit 110 as communication amount log information. Further, when notified of the traffic from the relay device 20, the policy control server 10 calculates the traffic threshold based on the traffic log information stored in the traffic log storage unit 110, and calculates the calculated traffic. The threshold is notified to the relay device 20.

  When calculating the traffic threshold, the policy control server 10 determines a control policy and notifies the relay device 20 of the determined control policy.

  The configuration of the communication amount notification system 1 shown in FIG. 1 is an example, and another configuration may be used. For example, the communication amount notification system 1 may include a plurality of relay devices 20. Further, for example, the communication amount notification system 1 may include a plurality of policy control servers 10.

<Process flow>
Here, the flow of processing of the communication amount notification system 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a processing flow of the communication amount notification system 1 according to the embodiment of the present invention.

  The relay device 20 receives the communication from the terminal 30 by the relay processing unit 200 (Step S1). Next, the relay device 20 causes the relay processing unit 200 to determine whether or not the communication traffic of the communication received from the terminal 30 exceeds the communication traffic threshold of the user of the terminal 30 (Step S2). Hereinafter, the description will be continued on the assumption that it is determined that the communication traffic of the communication received from the terminal 30 exceeds the traffic threshold.

  The relay device 20 notifies the policy control server 10 of the traffic of the communication received from the terminal 30 by the relay processing unit 200 (step S3). The traffic is notified, for example, by a CCR (Credit Control Request) signal.

  Next, the relay device 20 causes the relay processing unit 200 to transfer the communication received from the terminal 30 to the Internet (Step S4). That is, the relay processing unit 200 transfers the communication to the next hop.

  On the other hand, when the policy control processing unit 100 receives the communication amount notification from the relay device 20 by the policy control processing unit 100, the policy control server 10 creates communication amount log information and stores it in the communication amount log storage unit 110 (step S5). The communication amount log information is information in which the communication amount, a user ID for identifying the user of the terminal 30, and the date and time when the communication of the communication amount is received. As a result, the traffic log storage unit 110 accumulates traffic log information indicating a log of the traffic of each user.

  Next, the policy control server 10 causes the policy control processing unit 100 to acquire past traffic log information of the user from the traffic log storage unit 110 (step S6). That is, the policy control processing unit 100 acquires from the traffic log storage unit 110 the traffic log information of the user, which is the traffic log information of the last n days in the same time zone as the next time zone. Note that n is set in advance by, for example, an administrator of the policy control server 10.

  Next, the policy control server 10 causes the policy control processing unit 100 to calculate a traffic threshold from the traffic log information acquired from the traffic log storage unit 110 (step S7).

  Here, as an example, when n = 2, the communication time threshold value when the current time zone is “19: 00-21: 0” and the next time zone is “21: 00-23: 00” The calculation will be described with reference to FIG. FIG. 3 is a diagram illustrating an example of calculating a traffic threshold.

As shown in FIG. 3, in the step S6, and traffic log information including the actual value T ₂ of the two days prior to the traffic corresponding user, to 1 day before the traffic of the corresponding user actual values T ₁ The traffic log information including the traffic log information is acquired from the traffic log storage unit 110.

Therefore, these actual values _{T 1} and actual value _{T 2} from the next time zone in the day "21:00 to 23:00" predicted value P of the traffic is, P = (actual value _{T 1} + actual value T ₂ ) / 2. The policy control processing unit 100 sets the predicted value P calculated in this way as a communication traffic threshold value of the user in the next time zone “21: 00-23: 00”.

  Here, as an example, FIG. 4 shows the increase / decrease rate of the communication amount on the previous day and the day on weekdays. FIG. 4 is a graph showing the change of the rate of change when the vertical axis is the change rate and the horizontal axis is the time zone. The increase / decrease rate in FIG. 4 is, for each time zone, a rate at which the communication volume of the user on the current day in the time zone increases or decreases with respect to the communication volume of the user on the previous day in the time zone.

  As shown in FIG. 4, it can be seen that the rate of change fluctuates around “1.00” in each time zone. As described above, in general, it is known that the traffic of the user fluctuates around the change rate “1.00” in the same time zone (that is, the change in the change rate in the same time zone is small). I have.

  Therefore, by calculating the traffic threshold as described above, the real-time performance of data can be improved when the traffic reported from the relay device 20 to the policy control server 10 is used as provisioning data. .

  Return to FIG. The policy control server 10 determines the control policy of the user by the policy control processing unit 100 (Step S8). The control policy is determined based on the traffic threshold of the user and the traffic log information acquired in step S6.

  Then, the policy control server 10 notifies the relay device 20 of the traffic threshold and the control policy by the policy control processing unit 100 (step S9). The traffic threshold and the control policy are notified by, for example, CCA (Credit Control Answer).

  As described above, the communication amount notification system 1 according to the embodiment of the present invention calculates the communication amount threshold value in the next time zone based on the actual communication amount value of the user for the last n days. In other words, paying attention to the fact that the daily trend of the communication volume (traffic volume) of the user is similar, the traffic volume in the future time zone of the day is predicted using the traffic volume of the same time zone in the past, and the prediction is performed. By setting the value as the traffic threshold, the traffic threshold is dynamically controlled.

  Thereby, the communication amount notification system 1 according to the embodiment of the present invention can stably reduce the communication amount of the user even in the late-night zone (0:00 to 5:00) when the communication from the terminal 30 decreases. Can be notified to the policy control server 10.

<Functional configuration>
Next, a functional configuration of the communication amount notification system 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 5 is a diagram illustrating an example of a functional configuration of the communication amount notification system 1 according to the embodiment of the present invention.

{Policy control server 10}
As shown in FIG. 5, the policy control processing unit 100 of the policy control server 10 includes a notification reception unit 101, a notification transmission unit 102, a communication amount management unit 103, a communication amount prediction unit 104, a policy determination unit 105, Having. Further, the policy control server 10 includes the traffic log storage unit 110 as described above.

  The policy control processing unit 100 is realized by a process in which one or more programs installed in the policy control server 10 cause a CPU (Central Processing Unit) of the policy control server 10 to execute the program. The traffic log storage unit 110 can be realized using an auxiliary storage device such as an HDD (Hard Disk Drive) of the policy control server 10.

  The notification receiving unit 101 receives a notification (communication amount notification) from the relay device 20. The notification transmitting unit 102 transmits a notification (a notification of a traffic threshold and a control policy) to the relay device 20.

  The traffic management unit 103 manages traffic log information stored in the traffic log storage unit 110. That is, the traffic management unit 103 creates traffic log information from the traffic received by the notification receiving unit 101, and stores it in the traffic log storage unit 110. In addition, the communication amount management unit 103 is the communication amount log information of the corresponding user among the communication amount log information stored in the communication amount log storage unit 110, and is the latest n in the same time period as the next time period. Get daily traffic log information.

  The communication amount prediction unit 104 calculates the average value of the communication amount from the communication amount log information acquired by the communication amount management unit 103 (the communication amount log information for the last n days in the same time period as the next time period). , And predicts the traffic in the next time zone of the day. Then, the communication amount prediction unit 104 sets the predicted communication amount as a communication amount threshold in the next time zone.

  The policy determination unit 105 determines the control policy of the user from the traffic log information acquired by the traffic management unit 103 and the traffic threshold value predicted by the traffic prediction unit 104.

  The traffic log storage unit 110 stores traffic log information for each user. Here, the traffic log information stored in the traffic log storage unit 110 will be described with reference to FIG. FIG. 6 is a diagram illustrating an example of the traffic log information.

  As shown in FIG. 6, the traffic log information is associated with a user ID, a date and time, and traffic (up, down, and total). As described above, the communication amount log information is information indicating a log of the communication amount for each user notified to the policy control server 10.

<< Relay device 20 >>
As illustrated in FIG. 5, the relay processing unit 200 of the relay device 20 includes a user packet receiving unit 201, a routing unit 202, a user packet transmitting unit 203, a traffic management unit 204, a traffic notification unit 205, A notification transmission unit 206 and a notification reception unit 207 are provided. In addition, the relay device 20 includes a traffic storage unit 210 and a traffic threshold 220.

  Note that the relay processing unit 200 is realized by a process that causes one or more programs installed in the relay device 20 to be executed by the CPU of the relay device 20. The communication amount storage unit 210 can be realized by using an auxiliary storage device such as an SSD (Solid State Drive) of the relay device 20. Further, the traffic threshold 220 is stored in, for example, an auxiliary storage device.

  The user packet receiving unit 201 receives a communication (packet) from the terminal 30. The routing unit 202 specifies the next hop from the destination IP (Internet Protocol) address of the communication (packet) received by the user packet receiving unit 201.

  The user packet transmitting unit 203 transmits the communication (packet) received by the user packet receiving unit 201 to the next hop specified by the routing unit 202.

  The communication amount management unit 204 creates communication amount information indicating the communication amount (packet size) of the communication (packet) received by the user packet receiving unit 201, and stores the communication amount information in the communication amount storage unit 210. Further, the traffic management unit 204 determines whether or not the traffic exceeds the traffic threshold 220 of the user.

  When the communication amount management unit 204 determines that the communication amount exceeds the communication amount threshold 220, the communication amount notification unit 205 passes the communication amount to the notification transmission unit 206. Further, when the notification receiving unit 207 receives the notification (notification of the communication amount threshold value and the control policy), the communication amount notification unit 205 updates the communication amount threshold value 220 with the communication amount threshold value and stores the communication amount threshold value in the communication amount storage unit 210. The stored communication amount information of the corresponding user is deleted.

  The notification transmitting unit 206 transmits the communication amount passed from the communication amount notifying unit 205 to the policy control server 10. The notification receiving unit 207 receives a notification (a notification of a traffic threshold and a control policy) from the policy control server 10.

  The communication amount storage unit 210 stores communication amount information for each user. The traffic threshold 220 is a traffic threshold for each user. Here, the communication amount information stored in the communication amount storage unit 210 will be described with reference to FIG. FIG. 7 is a diagram illustrating an example of the traffic information.

  As shown in FIG. 7, the communication amount information is associated with a user ID and a communication amount (up, down, and total). As described above, the communication amount information is information indicating the communication amount for each user.

<Details of Processes Executed by Policy Control Server 10 and Relay Device 20>
Next, details of processing executed by the policy control server 10 and the relay device 20 will be described.

<< Relay device 20 >>
Hereinafter, the processing executed by the relay device 20 will be described with reference to FIG. FIG. 8 is a flowchart illustrating an example of a process executed by the relay device 20 according to the embodiment of the present invention.

  The user packet receiving unit 201 receives a communication (packet) from the terminal 30 (Step S101). Next, the communication amount management unit 204 creates communication amount information indicating the communication amount (packet size) of the communication (packet) received by the user packet receiving unit 201, and stores the communication amount information in the communication amount storage unit 210 (step S102). ).

  Next, the traffic management unit 204 determines whether the traffic exceeds the traffic threshold 220 of the user (ie, the user of the terminal 30) (Step S103).

  When it is determined in step S103 that the traffic exceeds the traffic threshold 220, the traffic notifying unit 205 passes the traffic to the notification transmitting unit 206. Then, the notification transmitting unit 206 notifies the policy control server 10 of the communication amount (Step S104). The notification transmitting unit 206 notifies the policy control server 10 of the communication amount by, for example, a CCR signal.

  On the other hand, when it is determined in step S103 that the traffic does not exceed the traffic threshold 220, the relay processing unit 200 proceeds to step S105.

  Subsequent to step S104, or when it is determined in step S103 that the communication amount does not exceed the communication amount threshold value 220, the routing unit 202 determines the destination IP address of the communication (packet) received by the user packet receiving unit 201 ( Internet Protocol) to determine the next hop from the address. Then, the user packet transmitting unit 203 transmits (transfers) the communication (packet) received by the user packet receiving unit 201 to the next hop specified by the routing unit 202 (Step S105).

  As described above, when the traffic of the communication from the terminal 30 exceeds the traffic threshold 220, the relay device 20 according to the embodiment of the present invention can notify the policy control server 10 of the traffic. In addition, as described later, the traffic threshold 220 is dynamically calculated and updated for each user based on the actual value of the traffic for the past n days. Therefore, the relay device 20 according to the embodiment of the present invention can stably notify the communication amount even in the case of, for example, a late-night zone where communication from the terminal 30 is small.

{Policy control server 10}
Next, a process executed by the policy control server 10 will be described with reference to FIG. FIG. 9 is a flowchart illustrating an example of a process executed by the policy control server 10 according to the embodiment of the present invention.

  The notification receiving unit 101 receives a communication amount notification from the relay device 20 (Step S201). Upon receiving the communication amount notification, the communication amount management unit 103 creates communication amount log information and stores it in the communication amount log storage unit 110 (step S202). The traffic management unit 103 creates traffic log information by associating the traffic, the user ID of the user of the terminal 30, and the current date and time.

  Next, the communication amount management unit 103 is the communication amount log information of the corresponding user among the communication amount log information stored in the communication amount log storage unit 110 and is the latest in the same time period as the next time period. The communication amount log information for n days is acquired (step S203).

  For example, assume that the user ID of the user of the terminal 30 is “u001”, the current time zone is “19: 00-21: 00”, and the next time zone is “21: 00-23: 00”. In this case, the traffic management unit 103 acquires the traffic log information for the last n days in which the user ID is “u001” and the date and time is “21:00” to “23:00”.

  Next, the communication amount prediction unit 104 uses the communication amount log information (the communication amount log information for the last n days in the same time period as the next time period) acquired by the communication amount management unit 103 to calculate the next time period of the current day. Estimate traffic. Then, the communication amount prediction unit 104 sets the predicted communication amount as a communication amount threshold value in the next time zone (step S204).

For example, the communication amount included in the communication amount log information m days before in the next time period is T _m (m = 1, 2,..., N), and the predicted value of the communication amount in the next time period on the day is P. In this case, the communication amount prediction unit 104 predicts the communication amount in the next time zone by calculating P = (T ₁ + T ₂ +... + T _n ) / n. Then, the communication amount prediction unit 104 sets the calculated predicted value P as a communication amount threshold value in the next time zone.

  Next, the policy determination unit 105 predicts the traffic log information (the traffic log information for the last n days in the same time zone as the next time zone) acquired by the traffic management unit 103 and the traffic forecast unit 104. The control policy of the user is determined from the traffic threshold (step S205).

  Next, the notification transmitting unit 102 notifies the relay device 20 of the communication amount threshold created by the communication amount estimating unit 104 and the control policy determined by the policy determining unit 105 (step S206). The notification transmitting unit 102 notifies the relay device 20 of the communication traffic threshold value and the control policy by using, for example, a CCA signal. Thereby, in the relay device 20, the communication traffic threshold value 220 and the control policy of the corresponding user are updated. When notified of the traffic threshold and the control policy, the relay device 20 deletes (clears) the traffic information of the user stored in the traffic storage unit 210.

  As described above, when the communication amount is notified from the relay device 20, the policy control server 10 in the embodiment of the present invention calculates the communication amount threshold value of the corresponding user from the actual value of the communication amount for the last n days. , A traffic threshold. In other words, the policy control server 10 according to the embodiment of the present invention determines, for each user, the future traffic in the same time zone as the time zone in accordance with the actual traffic volume in the past n days in a certain time zone. Prediction can be made, and the prediction value can be used as a traffic threshold. Therefore, the policy control server 10 according to the embodiment of the present invention dynamically updates, for each user, the traffic threshold 220 of the relay device 20 to a traffic threshold corresponding to the actual traffic in the past n days. Can be.

<Summary>
As described above, the communication amount notification system 1 according to the embodiment of the present invention focuses on the fact that the daily trend of the user's communication amount is similar (that is, the fluctuation of the increase / decrease rate of the communication amount in the same time zone is small). Then, the traffic in the future time zone of the day is predicted using the traffic in the past same time zone, and the predicted value is set as the traffic threshold.

  Accordingly, the communication amount notification system 1 according to the embodiment of the present invention can stably notify the user's communication amount from the relay device 20 to the policy control server 10 even when the user's communication amount is small. it can. Therefore, when utilizing the communication amount notified to the policy control server 10 as data for provisioning, the real-time property of the data can be improved.

  The present invention is not limited to the above-described embodiments specifically disclosed, and various modifications and changes can be made without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Communication amount notification system 10 Policy control server 20 Relay device 30 Terminal 100 Policy control processing unit 101 Notification reception unit 102 Notification transmission unit 103 Communication amount management unit 104 Communication amount prediction unit 105 Policy determination unit 110 Communication amount log storage unit 200 Relay processing Unit 201 user packet receiving unit 202 routing unit 203 user packet transmitting unit 204 communication amount managing unit 205 communication amount notifying unit 206 notification transmitting unit 207 notification receiving unit 210 communication amount storing unit 220 communication amount threshold

Claims (4)

A traffic management system including a relay device connected to a terminal used by a user, and a server device that manages a traffic volume notified from the relay device,
The relay device,
A determining unit that determines whether the communication traffic of the communication from the terminal exceeds a first threshold,
A first notification unit that notifies the server device of the communication amount when the communication unit determines that the communication amount exceeds the first threshold;
An updating unit that updates the first threshold with the second threshold when a second threshold is notified from the server device ,
The server device,
When the communication amount is notified from the relay device, a calculation unit that obtains the result of the communication amount in a predetermined period of the user, and calculates an average of the obtained result of the communication amount,
A second notifying unit for notifying the relay device the average the calculation unit is calculated as the second threshold value,
Traffic management system having The calculation unit,
The communication amount management system according to claim 1, wherein the communication amount management system obtains a communication amount record of the user for the last n days in a same time period as a next time period, and calculates an average of the acquired communication amount records. The second notification unit,
Notifying said second threshold value, and a control policy, which is determined on the basis of said the second threshold value results in the relay apparatus, the communication amount management system according to claim 1 or 2. A traffic management method used in a traffic management system including a relay device connected to a terminal used by a user and a server device that manages a traffic notified from the relay device,
The relay device,
A determining procedure for determining whether or not the communication traffic of the communication from the terminal exceeds a first threshold value;
A first notification procedure of notifying the server apparatus of the communication amount when it is determined that the communication amount exceeds the first threshold value by the determination step;
When a second threshold is notified from the server device, an update procedure of updating the first threshold with the second threshold is executed,
The server device,
When the communication amount is notified from the relay device, a calculation procedure of acquiring the result of the communication amount in a predetermined period of the user, and calculating an average of the obtained result of the communication amount,
A second notification procedure for notifying the relay device the average the calculation procedure is calculated as the second threshold value,
Traffic management method to execute.

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