JP2018133752A - Communications traffic management system and communications traffic management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably notify a server device of communications traffic.SOLUTION: A communications traffic management system includes a relay device connected to a terminal used by a user, and a server device which manages the communications traffic notified from the relay device. The relay device comprises a determination unit which determines whether the communications traffic of communication from the terminal exceeds a first threshold value, and a first notification unit which notifies the server device of the communications traffic when the determination unit determines that the communications traffic exceeds the first threshold value. The server device comprises a calculation unit which acquires a track record of communications traffic in a prescribed period of the user and calculates an average value of the acquired track record of communications traffic when the server device is notified of the communications traffic from the relay device, and a second notification unit which notifies the relay device of the average value calculated by the calculation unit as a second threshold value.SELECTED DRAWING: Figure 2

Description

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

  In recent years, Web services such as video distribution and online shopping are generally used, and the traffic volume of terminals used by users (hereinafter also referred to as “communication volume”) is increasing. In order to cope with an increasing traffic volume, a policy control technique for controlling communication for each user is known. Also, by collecting user traffic and predicting future traffic growth, it will be useful for determining whether or not communication facilities should be augmented (ie, using the collected traffic as provisioning data). Things have been done.

  In policy control technology, relay devices such as edge routers and PGWs (Packet Data Network Gateway) control policies (for example, communication bandwidth and traffic) to collect traffic and control traffic on a per-user basis. Realized. In such a policy control technique, a relay apparatus that accommodates a user and a policy control server that manages the policy of the relay apparatus are arranged in the network.

  The policy control server acquires the user traffic from the relay device, and transmits, for example, a control policy for narrowing the communication bandwidth of the user with a large traffic to the relay device. Thereby, the relay device such as the edge router or 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 a user's traffic volume, a technique for notifying the traffic volume from the relay device to the policy control server when a communication volume exceeding the threshold specified by the policy control server is performed 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 user's communication amount varies depending on the time zone (Non-patent Document 2), and in the time zone where the user's communication is concentrated (from 21:00 to 23:00 on weekdays). It is considered that the signal amount from the relay device to the policy control server increases.

  On the other hand, a technique for reducing the signal amount from the relay apparatus to the policy control server is known (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 with the relay device and determining the application of the policy rule.

  Further, a technology for controlling the signal amount from the relay device to the policy control server by predicting the next user's communication amount from the user's communication speed and dynamically changing the threshold value is known (non-patent). Reference 3).

JP 2014-1555096 A

ETSI TS 129 212 V11.9.0, 2013-07 "Aggregation results of traffic on the Internet in Japan", Data communication of Telecommunication Division, Communications Bureau, Ministry of Internal Affairs and Communications, September 30, 2015 Mitsuru Kataoka, Takaaki Narumi, Hideaki Iwata, "Proposal of PCRF Traffic Notification Method for Traffic Opportunities", September 2016 Society Conference

  However, the technique of Patent Document 1 has a problem that it is not defined in 3GPP. On the other hand, although the technology of Non-Patent Document 3 can suppress the load of the signal amount to the policy control server, the signal amount is reduced (that is, the communication amount is notified, for example, at midnight (0:00 to 5:00)). There is a problem that the frequency decreases. For this reason, when the traffic collected by the policy control server is used as provisioning data, there is a problem that the real-time property in the midnight is lowered.

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

  Accordingly, in order to solve the above-described problem, there is provided a communication amount management system including a relay device connected to a terminal used by a user and a server device that manages a communication amount notified from the relay device. The apparatus determines whether or not the communication amount of communication from the terminal exceeds a first threshold, and the determination unit determines that the communication amount exceeds the first threshold A first notification unit configured to notify the server device of the communication amount, and the server device receives the communication amount from the relay device, the communication amount of the user during a predetermined period A calculation unit that calculates the average of the acquired traffic volume, and a second notification unit that notifies the relay device of the average calculated by the calculation unit as a second threshold value. Have.

  It is possible to notify the communication amount stably.

It is a figure which shows an example of the whole structure of the communication amount notification system in embodiment of this invention. It is a figure which shows an example of the flow of a process of the traffic notification system in embodiment of this invention. It is a figure explaining an example of calculation of a traffic threshold. It is a figure which shows an example of the increase / decrease rate of the communication amount in the same time slot | zone. It is a figure which shows an example of a function structure of the communication amount notification system in embodiment of this invention. It is a figure which shows an example of communication amount log information. It is a figure which shows an example of traffic information. It is a flowchart which shows an example of the process which the relay apparatus in embodiment of this invention performs. It is a flowchart which shows an example of the process which the policy control server in embodiment of this invention performs.

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

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

  As illustrated in FIG. 1, the communication amount notification system 1 according to the 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 the 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. When the terminal 30 communicates 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 uses the relay processing unit 200 to transfer communication from the terminal 30 to the Internet, and collects the amount of communication between the terminal 30 and the Internet for each user. The relay device 20 collects the communication amount collected by the relay processing unit 200 when the collected communication amount exceeds the threshold notified from the policy control server 10 (hereinafter, referred to as “communication amount threshold”). 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 terminal 30 of the target user according to the control policy by the relay processing unit 200.

  The policy control server 10 is a computer or a computer system composed of one or more computers, for example. The policy control server 10 functions as a PCRF (Policy and Charging Rules Function), for example. The policy control server 10 also 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 the communication amount is notified from the relay device 20, the policy control server 10 calculates a communication amount threshold based on the communication amount log information stored in the communication amount log storage unit 110, and calculates the calculated communication amount. The threshold value is notified to the relay device 20.

  Further, when the traffic threshold value is calculated, the policy control server 10 determines a control policy and notifies the relay device 20 of the determined control policy.

  Note that the configuration of the traffic notification system 1 shown in FIG. 1 is an example, and other configurations may be used. For example, the traffic notification system 1 may include a plurality of relay devices 20. For example, the traffic notification system 1 may include a plurality of policy control servers 10.

<Process flow>
Here, the flow of processing of the traffic notification system 1 in 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 traffic notification system 1 according to the embodiment of the present invention.

  Relay device 20 receives communication from terminal 30 by relay processing unit 200 (step S1). Next, the relay device 20 determines whether the communication traffic received from the terminal 30 exceeds the communication traffic threshold of the user of the terminal 30 by the relay processing unit 200 (step S2). Hereinafter, the description will be continued assuming that it is determined that the communication amount of the communication received from the terminal 30 exceeds the communication amount threshold.

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

  Next, the relay device 20 uses 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 a notification of traffic from the relay device 20, the policy control server 10 creates traffic log information and stores it in the traffic log storage 110 (step S5). The traffic volume log information is information in which the traffic volume, the user ID for identifying the user of the terminal 30, and the date and time when the communication of the traffic volume is received are associated. As a result, the traffic volume log storage unit 110 accumulates traffic volume log information indicating a log of the traffic volume for each user.

  Next, the policy control server 10 uses the policy control processing unit 100 to acquire the past traffic log information of the user from the traffic log storage unit 110 (step S6). In other words, the policy control processing unit 100 acquires the traffic volume log information of the user from the traffic volume log storage unit 110 for the most recent n days in the same time zone as the next time zone. Note that n is set in advance by, for example, the administrator of the policy control server 10 or the like.

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

  Here, as an example, in the case where n = 2, the traffic threshold value in the case where 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 for explaining 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 volume log information included is acquired from the traffic volume 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 the traffic threshold value of the corresponding user in the next time zone “21: 00-23: 00”.

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

  As shown in FIG. 4, it can be seen that the increase / decrease rate changes around “1.00” in each time zone. As described above, it is generally known that the user's traffic is changing around the increase / decrease rate “1.00” in the same time zone (that is, the fluctuation of the increase / decrease rate in the same time zone is small). Yes.

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

  Returning to FIG. The policy control server 10 determines the control policy of the user by using 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 apparatus 20 of the communication amount threshold and the control policy by the policy control processing unit 100 (step S9). The traffic threshold and the control policy are notified by CCA (Credit Control Answer), for example.

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

  Thereby, the communication amount notification system 1 according to the embodiment of the present invention can stabilize the user's communication amount even in the midnight (0: 0 to 5:00) in which communication from the terminal 30 decreases, for example. Can be notified to the policy control server 10.

<Functional configuration>
Next, the functional configuration of the traffic 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 traffic 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 receiving unit 101, a notification transmitting unit 102, a traffic management unit 103, a traffic prediction unit 104, and a policy determination unit 105. Have In addition, 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 are executed by a CPU (Central Processing Unit) of the policy control server 10. The traffic log storage unit 110 can be realized by 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 transmission unit 102 transmits a notification (communication amount threshold value and control policy notification) to the relay device 20.

  The traffic management unit 103 manages the 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 receiver 101 and stores it in the traffic log storage unit 110. Further, the traffic management unit 103 is the traffic log information of the corresponding user among the traffic log information stored in the traffic log storage unit 110, and is the latest n in the same time zone as the next time zone. Get daily traffic log information.

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

  The policy determination unit 105 determines the control policy of the corresponding user from the communication amount log information acquired by the communication amount management unit 103 and the communication amount threshold predicted by the communication amount 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 communication amount log information.

  As illustrated in FIG. 6, the user ID, the date and time, and the traffic (upstream, downstream, and total amount) are associated with the traffic volume log information. As described above, the traffic volume log information is information indicating a log of the traffic volume for each user notified to the policy control server 10.

<< Relay device 20 >>
As shown 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 included. Further, the relay device 20 includes a traffic volume storage unit 210 and a traffic volume threshold 220.

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

  The user packet receiving unit 201 receives communication (packets) from the terminal 30. The routing unit 202 identifies 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 transmission unit 203 transmits the communication (packet) received by the user packet reception unit 201 to the next hop specified by the routing unit 202.

  The traffic volume management unit 204 creates traffic volume information indicating the traffic volume (packet size) of the communication (packet) received by the user packet reception unit 201 and stores the traffic volume information in the traffic volume storage unit 210. Further, the traffic management unit 204 determines whether the traffic exceeds the traffic threshold 220 of the corresponding user.

  If 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 a notification (notification of a communication amount threshold value and a 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 storage unit 210. Delete the stored traffic information of the corresponding user.

  The notification transmission unit 206 transmits the communication amount passed from the communication amount notification unit 205 to the policy control server 10. The notification receiving unit 207 receives a notification (communication amount threshold value and control policy notification) 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 illustrated in FIG. 7, a user ID and a communication amount (uplink, downlink, and total amount) are associated with the communication amount information. Thus, the communication amount information is information indicating the communication amount in units of users.

<Details of processing 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, processing executed by the relay device 20 will be described with reference to FIG. FIG. 8 is a flowchart illustrating an example of processing 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 traffic management unit 204 creates traffic information indicating the traffic (packet size) of the communication (packet) received by the user packet receiver 201 and stores it in the traffic storage unit 210 (step S102). ).

  Next, the traffic management unit 204 determines whether or not the traffic exceeds the traffic threshold 220 of the corresponding user (that is, the user of the terminal 30) (step S103).

  If it is determined in step S 103 that the communication amount exceeds the communication amount threshold 220, the communication amount notification unit 205 passes the notification to the notification transmission unit 206. Then, the notification transmission unit 206 notifies the policy control server 10 of the communication amount (step S104). The notification transmission 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 communication amount does not exceed the communication amount 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 220, the routing unit 202 receives the destination IP ( The next hop is identified from the Internet Protocol address. Then, the user packet transmission unit 203 transmits (transfers) the communication (packet) received by the user packet reception unit 201 to the next hop specified by the routing unit 202 (step S105).

  As described above, the relay device 20 according to the embodiment of the present invention can notify the policy control server 10 of the communication amount when the communication amount from the terminal 30 exceeds the communication amount threshold 220. 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 notify the communication amount stably even in the midnight or the like where there is little communication from the terminal 30, for example.

<< Policy Control Server 10 >>
Next, processing executed by the policy control server 10 will be described with reference to FIG. FIG. 9 is a flowchart showing an example of processing 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). When receiving the notification of the traffic volume, the traffic volume management unit 103 creates traffic volume log information and stores it in the traffic volume 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 traffic volume management unit 103 is the traffic volume log information of the corresponding user among the traffic volume log information stored in the traffic volume log storage unit 110, and is the latest in the same time zone as the next time zone. The traffic 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: 0”, 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 with the user ID “u001” and the dates “21:00” to “23:00”.

  Next, the traffic volume prediction unit 104 calculates the traffic volume log information acquired by the traffic volume management unit 103 (the traffic volume log information of the last n days in the same time zone as the next time zone) for the next time zone of the current day. Predict traffic. Then, the traffic estimation unit 104 sets the predicted traffic as the traffic threshold for the next time zone (step S204).

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

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

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

  As described above, when the traffic amount is notified from the relay device 20, the policy control server 10 according to the embodiment of the present invention calculates the traffic amount threshold of the corresponding user from the actual value of the traffic amount in the last n days. The traffic threshold can be set. In other words, the policy control server 10 according to the embodiment of the present invention determines, for each user, the future traffic volume in the same time zone according to the actual traffic volume in the past n days in a certain time zone. It is possible to predict and use the predicted value as the traffic threshold. Therefore, the policy control server 10 according to the embodiment of the present invention dynamically updates the traffic volume threshold 220 of the relay device 20 to the traffic volume threshold according to the traffic volume of the past n days for each user. Can do.

<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 rate of the communication amount in the same time zone is small). Then, the traffic volume in the future time zone of the day is predicted using the traffic volume in the same time zone in the past, and the predicted value is set as the traffic volume threshold.

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

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

DESCRIPTION OF SYMBOLS 1 Traffic amount notification system 10 Policy control server 20 Relay device 30 Terminal 100 Policy control processing part 101 Notification receiving part 102 Notification transmission part 103 Traffic volume management part 104 Traffic volume estimation part 105 Policy determination part 110 Traffic volume log storage part 200 Relay process Unit 201 User packet reception unit 202 Routing unit 203 User packet transmission unit 204 Communication amount management unit 205 Communication amount notification unit 206 Notification transmission unit 207 Notification reception unit 210 Communication amount storage unit 220 Communication amount threshold

Claims (5)

A communication amount management system including a relay device connected to a terminal used by a user and a server device that manages the communication amount notified from the relay device,
The relay device is
A determination unit that determines whether or not the communication amount of communication from the terminal exceeds a first threshold;
A first notification unit that notifies the server device of the communication amount when the determination unit determines that the communication amount exceeds the first threshold;
The server device
When the communication amount is notified from the relay device, a calculation unit that acquires the actual amount of the communication amount in a predetermined period of the user and calculates the average of the acquired actual communication amount;
A second notification unit that notifies the relay device of the average calculated by the calculation unit as a second threshold;
A traffic management system. The calculation unit includes:
The communication volume management system according to claim 1, wherein the communication volume management system according to claim 1, which acquires the actual traffic volume of the user for the last n days in the same time slot as the next time slot and calculates an average of the acquired traffic volume. The relay device is
The traffic management system according to claim 1, further comprising: an update unit configured to update the first threshold value with the second threshold value when the second threshold value is notified from the server device. The second notification unit includes:
The traffic management system according to any one of claims 1 to 3, wherein the relay apparatus is notified of the second threshold and a control policy determined based on the second threshold and the performance. 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 the traffic notified from the relay device,
The relay device is
A determination procedure for determining whether or not the communication amount of communication from the terminal exceeds a first threshold;
When it is determined by the determination procedure that the communication amount exceeds the first threshold value, a first notification procedure for notifying the server device of the communication amount is executed.
The server device
When the communication amount is notified from the relay device, a calculation procedure for acquiring the actual amount of communication in the predetermined period of the user and calculating an average of the acquired actual amount of communication;
A second notification procedure for notifying the relay device of the average calculated by the calculation procedure as a second threshold;
Traffic management method to execute.

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