JP2001211181A - Device and method for controlling band and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means for reporting a remaining band to a transmission source device when a band usage rate exceeds a threshold. SOLUTION: In a band controller 1, a band and connection control part 13 inquires the usage rate of a band for HTTP connection to a band usage rate measuring part 14 when an HTTP frame is received from a transmission line 2, a contents generating part 17 generates HTML contents from a statistic value when the HTTP connection remaining band exceeds a designated threshold and gives it to an HTTP demon 16 and a redirect control part 15 redirects the HTTP connection to the HTTP demon 16 and displays the statistic value of the band controller 1 on the screen of the transmission source device. The HTTP demon 16 displays the statistic value of the controller 1 in the transmission source device for a fixed time and, then, redirects the HTTP connection to a normal destination again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band control device, and more particularly to a band control device, method, and recording medium for notifying a source device of a band use rate.

[0002]

2. Description of the Related Art A band control device is a device that classifies received frames based on specific information of a frame header and controls transmission amount of the classified frames according to a specified control policy. It is used for controlling the amount of traffic flowing through a line having a relatively small capacity in accordance with a specified rule.

[0003] A conventional band control device will be described with reference to the drawings.

FIG. 4 is a block diagram of a conventional band control device.

Referring to FIG. 4, a conventional band control device 5
Is a reception driver 51 that receives a frame from the transmission line 6
A reception memory 52 that stores a frame received from the reception driver 51, a band of a connection to be relayed, and a band / connection control unit 53 that controls the connection;
A redirect control unit 55 that redirects a connection when the used bandwidth exceeds a specified upper limit, a transmission memory 58 that stores connection data to be relayed to the transmission line 6, and transmits the contents of the transmission memory 58 to the transmission line 6. And a transmission driver 59 that performs the transmission.

Next, the operation of the conventional band control device 5 will be described.

[0007] The conventional band control device 5 transmits H
The reception driver 51 transmits a TTP (Hyper Text Transfer Protocol) connection establishment request frame to the reception memory 52.
When the bandwidth can be secured for the HTTP connection, the bandwidth / connection control unit 53 partially changes the HTTP frame according to the bandwidth, stores the HTTP frame in the transmission memory 58, and transmits the frame from the transmission driver 59 to the transmission path 6. Relay.

[0008] When a bandwidth cannot be secured for an HTTP connection, an HTTP redirect destination URL (Unregistered URL) is used.
iform Resource Locater)
The redirect control unit 55 redirects the HTTP connection to the registered URL (destination conversion) and displays an error.

[0009]

The problems of the prior art described above are that the conventional band control device performs error processing only when the used band is exhausted, and the transmission source device confirms the current used band value. Therefore, the operation cannot be avoided so that the band is not used up, such as reducing the number of connections on the transmission source device side.

[0010] The reason is that there is no mechanism by which the transmission source device can confirm in advance that the bandwidth is small, and the transmission source device cannot confirm the use state of the bandwidth, and it can be understood that there is no bandwidth that can be used only after the used bandwidth is exhausted. That's why.

[0011] It is an object of the present invention to provide a method in which a bandwidth control device displays a used bandwidth to a transmission source device and notifies that the available bandwidth is remaining before the available bandwidth is used up, so that the transmission source device can be consciously used. Is to provide a mechanism that can reduce the band used.

[0012]

According to a first aspect of the present invention, there is provided a bandwidth control device for controlling a connection between a source device and a destination device, wherein the bandwidth control device controls the bandwidth usage rate of the connection. A means for notifying the former device is provided.

According to a second aspect of the present invention, there is provided a bandwidth control device for controlling a bandwidth used by an HTTP connection in a network for establishing and transmitting an HTTP connection on a transmission path between a transmission source device and a transmission destination device to transmit and receive a frame. A control device, a reception driver for receiving a frame transmitted by the transmission source device from the transmission line, a reception memory for storing a frame received by the reception driver, and a bandwidth for measuring a bandwidth usage rate of the HTTP connection A usage rate measurement unit, a bandwidth / connection control unit that controls an HTTP connection relayed based on the bandwidth usage rate measured by the bandwidth usage rate measurement unit, and an HTTP connection based on an instruction from the bandwidth / connection control unit.
A redirect control unit for redirecting to a daemon and an HTML based on the bandwidth usage measured by the bandwidth usage measuring unit.
A content creation unit that creates content, an HTTP daemon that displays the HTML content created by the content creation unit on the transmission source device, a transmission memory that stores a frame received by the reception driver and relayed to the transmission path, A transmission driver for transmitting the frame stored in the transmission memory to the transmission path.

[0014] In a third aspect of the present invention, in the second aspect of the present invention, the redirection control unit includes a URL registered in advance when the bandwidth usage rate measured by the bandwidth usage rate measurement unit exceeds a maximum value. It is characterized by having a means for redirecting to.

A bandwidth control method according to a fourth aspect of the present invention is a bandwidth control method for controlling a bandwidth used by the HTTP connection in a network for transmitting and receiving a frame by establishing an HTTP connection on a transmission path between a transmission source device and a transmission destination device. A control method, comprising: receiving a frame transmitted by the transmission source device from the transmission path, storing the frame in a reception memory,
The bandwidth utilization of the TTP connection is measured, and if the measured bandwidth utilization is equal to or less than the threshold, the received frame is stored in the transmission memory and transmitted to the transmission path, and the measured bandwidth utilization exceeds the threshold and exceeds the threshold. If the value is equal to or less than the value, HTML content is created from the measured bandwidth usage rate, displayed on the transmission source device, and after a lapse of a predetermined time, the received frame is stored in a transmission memory and transmitted to the transmission line, and the measured bandwidth is transmitted. When the usage rate exceeds the maximum value, it is displayed on the transmission source device from a URL registered in advance.

According to a fifth aspect of the present invention, in the bandwidth control method according to the fourth aspect, the display for the transmission source device is the HT.
The TP connection is performed by redirecting the TP connection from the transmission destination device to a display source.

According to a sixth aspect of the present invention, there is provided a recording medium, comprising: a reception process of receiving a frame transmitted by the transmission source device from the transmission line and storing the received frame in a reception memory; and a usage bandwidth for measuring a bandwidth usage rate of the HTTP connection. Measurement processing, the normal processing of storing the received frame in the transmission memory and sending it to the transmission line if the measured bandwidth utilization is equal to or less than the threshold, and the measured bandwidth utilization is greater than the threshold and less than or equal to the maximum value. If there is, a warning process for creating HTML content from the measured bandwidth usage rate, displaying the HTML content on the transmission source device, storing the received frame in a transmission memory after a predetermined time elapses, and transmitting the frame to the transmission path, A process for causing a computer to execute an abnormality process to be displayed on the transmission source device from a URL registered in advance when the usage rate exceeds a maximum value. And characterized by recording the beam.

A recording medium according to a seventh aspect of the present invention is the recording medium according to the sixth aspect, wherein the HTTP is used for displaying the information on the transmission source device.
A program for causing a computer to execute a redirect process of redirecting a connection from the transmission destination device to a display source is recorded.

[0019]

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

Referring to FIG. 1, a band control device 1 of the present invention includes a reception driver 11, a reception memory 12,
A connection control unit 13, a bandwidth usage rate measurement unit 14,
A redirect control unit 15, an HTTP daemon 16,
It comprises a content creation unit 17, a transmission memory 18, and a transmission driver 19.

The reception driver 11 receives an HTTP frame from a transmission source device (not shown in FIG. 1) addressed to a transmission destination device (not shown in FIG. 1) from the transmission line 2, and
2 is stored.

The receiving memory 12 stores an HTTP frame received by the receiving driver 11.

The band / connection control unit 13 controls the band of the connection to be relayed and the connection. Do the following: (1) HT for responding to received HTTP frames
The bandwidth utilization rate measurement unit 14 is inquired of the bandwidth utilization rate for the TP connection. (2) The value of the buffer amount in the header information of the HTTP frame stored in the reception memory 12 is changed and stored in the transmission memory 18 according to the bandwidth usage rate returned from the bandwidth usage measurement unit 14. If the bandwidth utilization is high, the value of the buffer amount is changed to a smaller value. When the bandwidth utilization is low, the value of the buffer amount is not changed. (3) If the bandwidth usage rate returned from the bandwidth usage rate measurement unit 14 exceeds a predetermined threshold value, the content creation unit 17 sends an HTML (Hyper Text Markup Language) to the content creation unit 17.
e; hypertext markup language) Instruct creation of content. (4) When the bandwidth usage rate returned from the bandwidth usage rate measurement unit 14 exceeds a predetermined threshold or maximum value, the redirection control unit 15 is instructed to redirect the HTTP connection (destination conversion). .

The band usage measuring unit 14 measures the band usage by the HTTP connection. That is, HT
Used bandwidth of TP connection bandwidth, remaining bandwidth,
The statistical value such as the bandwidth usage rate is calculated, and the result is returned to the bandwidth / connection control unit 13.

The redirect control unit 15 redirects (destination conversion) the HTTP connection to the display source in accordance with an instruction from the band / connection control unit 13. That is, (1) When the band usage rate exceeds the threshold value and is equal to or less than the maximum value, HT
The TP connection is redirected (destination conversion) to the HTTP daemon 16. (2) When the band usage rate exceeds the maximum value, the HTTP connection is redirected (destination conversion) to a URL registered in advance.

The HTTP daemon 16 uses the redirected (destination-converted) HTTP connection to convert the HTML format data created by the content
The TTP frame is displayed on the screen of the transmission source device. HTT
After displaying on the transmission source device for a certain period of time,
The TTP connection is redirected (destination conversion) to a proper destination again.

The content creation unit 17 obtains statistical values such as the used bandwidth amount, the remaining bandwidth amount, and the bandwidth usage rate of the HTTP connection from the bandwidth / connection control unit 13, creates HTML format data (contents),
Transfer to the TTP daemon 16.

The transmission memory 18 stores an HTTP frame to be transmitted to the transmission line 2.

The transmission driver 19 sends out the HTTP frame stored in the transmission memory 18 to the transmission line 2.

FIG. 1 shows the operation of the embodiment of the present invention.
This will be described in detail with reference to FIG.

FIG. 2 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 3 is a diagram showing a flow of the operation of the embodiment of the present invention.

Referring to FIG. 2, the band control device 1, the devices A3 and B4 are connected to the transmission line 2.

In this description, the HT is transmitted from the device A3 to the device B4.
It is assumed that a TP frame is transmitted. Band control device 1
Is an HTT from the device A3 to the device B4 via the transmission line 2.
It relays and receives the P frame, performs processing, and sends an HTTP frame to the device B4, which is a legitimate destination.

Referring to FIG. 3, the reception driver 11
The HTTP frame sent from the device A3 is received from the transmission line 2 and stored in the reception memory 12 (Steps 301 to 301).
302).

The bandwidth / connection control unit 13 inquires the bandwidth usage measuring unit 14 about the usage rate of the bandwidth for the HTTP connection for responding to the received HTTP frame. The bandwidth usage measuring unit 14 calculates statistical values such as the used bandwidth, remaining bandwidth, and bandwidth usage of the bandwidth for the HTTP connection, and returns the result to the bandwidth / connection controller 13 (step 303).

If the current bandwidth usage is equal to or less than the threshold (normal state), the bandwidth / connection control unit 13 transmits the HTTP frame stored in the reception memory 12 to the transmission memory 1.
8 (steps 304 and 310).

The transmission driver 19 sends out the HTTP frame stored in the transmission memory 18 to the transmission line 2 (Step 311).

When the current bandwidth usage rate exceeds the threshold value and is equal to or less than the maximum value (warning state), the content creation section 17 creates HTML content from the statistics in its own device according to an instruction from the bandwidth / connection control section 13. HTTP daemon 1
6 (steps 304 to 305).

The redirect control unit 15 redirects the HTTP connection to the HTTP daemon 16 (converts the destination) (step 306).

The HTTP daemon 16 displays the HTML content on the screen of the transmission source device (step 30).
7).

After displaying the statistical value on the screen of the transmission source device for a certain period of time, the HTTP daemon 16 redirects the HTTP connection to a proper destination (destination conversion) (step 308).

The bandwidth / connection control unit 13 changes the value of the buffer amount in the header information of the HTTP frame according to the bandwidth usage rate and stores it in the transmission memory 18 (steps 309 to 310).

The transmission driver 19 sends out the HTTP frame stored in the transmission memory 18 to the transmission line 2 (Step 311).

When the current bandwidth usage rate exceeds the maximum value (abnormal state), the redirect control section 15 redirects the HTTP connection to a URL registered in advance (destination conversion) according to an instruction from the bandwidth / connection control section 13. (Steps 304 and 312).

The content of the URL registered in advance is displayed on the screen of the transmission source device, and after displaying it on the screen of the transmission source device for a certain period of time, the HTTP connection is disconnected (steps 313 to 314).

As described above, according to the present invention, when the bandwidth usage rate for the HTTP connection exceeds the specified threshold, the request for establishing the HTTP connection
By redirecting to the TP daemon and displaying the content indicating the current bandwidth usage for a certain period of time and connecting to the destination, the bandwidth usage is notified to the source device and the source device does not use up the bandwidth, such as reducing the number of HTTP connections. It is possible to avoid in operation.

In the above-described embodiment according to the present invention, a program for executing the processing operation of the band control device is recorded as data on a recording medium (not shown) such as a magnetic disk or an optical disk. The read data is used to operate the band control device. As described above, the data for operating the band control device according to the present invention is recorded on the recording medium, and the function of the band control device can be realized by installing the recording medium.

[0050]

The effect of the present invention is that the source device can know the remaining bandwidth while the bandwidth can be secured.

The reason is that a means for displaying the statistical value of the band control device to the transmission source device when the remaining band exceeds the threshold value is provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a diagram illustrating an operation of the embodiment of the present invention.

FIG. 3 is a diagram showing a flow of operation according to the embodiment of the present invention;

FIG. 4 is a block diagram of a conventional device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bandwidth control device 2 transmission line 3 device A 4 device B 5 conventional band control device 6 transmission line 11 reception driver 12 reception memory 13 bandwidth / connection control unit 14 bandwidth usage measurement unit 15 redirect control unit 16 HTTP daemon 17 content creation Unit 18 transmission memory 19 transmission driver 51 reception driver 52 reception memory 53 bandwidth / connection control unit 55 redirection control unit 58 transmission memory 59 transmission driver

Claims (7)

[Claims] 1. A bandwidth control device for controlling a connection between a transmission source device and a transmission destination device, comprising: means for notifying the transmission source device of the bandwidth usage rate of the connection. apparatus. 2. A hypertext transfer protocol (hereinafter referred to as H) in a transmission path between a transmission source device and a transmission destination device.
A bandwidth control device for controlling a bandwidth used by the HTTP connection in a network that establishes a connection and transmits / receives a frame, and a reception driver that receives a frame transmitted by the transmission source device from the transmission line; A reception memory for storing a frame received by the reception driver, a bandwidth utilization measuring unit for measuring the bandwidth utilization of the HTTP connection, and an HTTP relaying based on the bandwidth utilization measured by the bandwidth utilization measuring unit
A bandwidth / connection control unit for controlling the connection,
According to the instruction of the band / connection control unit, the HTT
A redirect control unit for redirecting a P connection to an HTTP daemon, a content creation unit for creating HTML content from the bandwidth usage rate measured by the bandwidth usage rate measurement unit, and an HTM created by the content creation unit
An HTTP daemon for displaying L content on the transmission source device, a transmission memory for storing a frame received by the reception driver and relayed to the transmission line, and a transmission for transmitting a frame stored in the transmission memory to the transmission line. And a driver. 3. The redirection control unit includes means for redirecting to a pre-registered uniform resource locator (hereinafter, referred to as a URL) when the bandwidth usage rate measured by the bandwidth usage rate measurement unit exceeds a maximum value. 3. The bandwidth control device according to claim 2, comprising: 4. A bandwidth control method for controlling a bandwidth used by the HTTP connection in a network for transmitting and receiving a frame by establishing an HTTP connection on a transmission path between a transmission source apparatus and a transmission destination apparatus, wherein A frame transmitted by the device is received from the transmission line and stored in a reception memory, and a bandwidth usage rate of the HTTP connection is measured. If the measured bandwidth usage rate is equal to or less than a threshold, the received frame is stored in a transmission memory. Then, when the measured bandwidth utilization exceeds the threshold and is equal to or less than the maximum value, HTML content is created from the measured bandwidth utilization and displayed on the transmission source device, and after a predetermined time elapses, Stores the received frame in the transmission memory and sends it out to the transmission line, and registers it in advance when the measured bandwidth usage exceeds the maximum value. And displaying the URL on the transmission source device based on the specified URL. 5. The display for the transmission source device is the H
5. A connection is made by redirecting a TTP connection from the destination device to a display source.
The described band control method. 6. A reception process for receiving a frame transmitted by the transmission source device from the transmission line and storing the frame in a reception memory; a bandwidth measurement process for measuring a bandwidth usage rate of the HTTP connection; If the usage rate is equal to or less than a threshold, the normal processing of storing the received frame in the transmission memory and sending it to the transmission path; and, if the measured bandwidth usage exceeds the threshold and equal to or less than the maximum value, the measured bandwidth usage A warning process for creating HTML content from the device, displaying the content on the transmission source device, storing the received frame in a transmission memory after a lapse of a predetermined time, and transmitting the frame to the transmission line, and when the measured bandwidth usage rate exceeds a maximum value. And recording a program for causing a computer to execute an abnormal process to be displayed on the transmission source device from a pre-registered URL when the URL is registered. Recording medium. 7. The method according to claim 1, further comprising the step of:
7. The recording medium according to claim 6, wherein a program for causing a computer to execute a redirect process for redirecting a TTP connection from the transmission destination device to a display source is recorded.