JP2002044091A - Method and device for asigning band - Google Patents

Abstract

(57) [Summary] [Problem] To average the waiting time of each ONU until a bandwidth is actually allocated after transmitting a bandwidth allocation request, but the request content of the bandwidth allocation request of each ONU is the same. Also in the case of (1), there is a problem that the bandwidth cannot be used efficiently because the bandwidth is allocated to each ONU in order. SOLUTION: A bandwidth allocation request having the same request content is read from a request content-specific bandwidth request storage unit 13, and the same bandwidth is allocated to one or more ONUs which are the request sources of the bandwidth allocation request, and the request content is assigned. To broadcast.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band allocating apparatus and a band allocating method for efficiently allocating a transmission band to each information source in a system in which a plurality of information sources share a transmission band. As a system sharing a transmission band, for example, a subscriber line terminal unit (hereinafter, referred to as “SLT”) in a station and a plurality of network terminating devices (hereinafter, referred to as “ONU”) on a user side face each other. Point-multipoint ATM-PDS for bidirectional communication
(Asynchronous Transfer Mo
There is a de-Passive Double Star (DS) transmission system. In this system, a band allocating device provided in an SLT allocates a transmission band in a PDS section to a plurality of ONUs. In addition, FWA (Fixed wireless)
In a wireless system such as ss access, a station device allocates a band to a plurality of wireless terminal devices.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a configuration diagram showing a conventional bandwidth allocating device disclosed in Japanese Patent Application Publication No. 6-206, in which 1 is a request individual management unit that receives a bandwidth allocation request from an arbitrary ONU and identifies a request source of the bandwidth allocation request; Reference numeral 2 denotes a bandwidth request storage unit for storing the bandwidth allocation requests received by the individual request management unit 1, and 3 reads out the bandwidth allocation requests stored by the bandwidth request storage unit 2 for each request source in order, and sends the requests to the request sources. This is a band request permission unit that allocates a band.

Next, the operation will be described. Upon receiving a bandwidth allocation request from an ONU, the individual request management unit 1 identifies the request source of the bandwidth allocation request, and outputs the identification result and the bandwidth allocation request to the bandwidth request storage unit 2. Upon receiving the identification result of the individual request management unit 1 and the bandwidth allocation request, the bandwidth request storage unit 2 refers to the identification result and stores the bandwidth allocation request for each request source.

[0004] The bandwidth request permitting unit 3 sequentially reads out the bandwidth allocation requests stored by the bandwidth request storage unit 2 for each request source, and allocates a bandwidth to the request source.
By this means, after transmitting the bandwidth allocation request, the waiting time of each ONU until the bandwidth is actually allocated can be averaged to maintain fairness.

[0005]

Since the conventional bandwidth allocating apparatus is configured as described above, each ONU from the transmission of the bandwidth allocation request until the actual allocation of the bandwidth is performed.
Can be averaged, but even when the request content of the bandwidth allocation request of each ONU is the same, the bandwidth is allocated to each ONU in order, so that the bandwidth can be used efficiently. There was a task that could not be done.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem. When the content of a bandwidth allocation request from each ONU is the same, the same bandwidth can be allocated to each ONU. Accordingly, it is an object of the present invention to obtain a band allocating apparatus and a band allocating method that can use a band efficiently.

[0007]

A bandwidth allocating apparatus according to the present invention reads a bandwidth allocation request having the same request content from a storage means, and sends the same bandwidth allocation request to one or more terminals that have issued the bandwidth allocation request. A distribution means for allocating a band and broadcasting the contents of the request is provided.

In the band allocating apparatus according to the present invention, when the classifying unit receives the band allocation request and receives the band allocation request, the distribution unit manages an elapsed time from the reception time and sets the elapsed time. The bandwidth is allocated to the request source of the bandwidth allocation request that has reached the time.

In the band allocating apparatus according to the present invention, when a processing time for allocating a band is set, the distribution means sends a request to a band allocation request source whose elapsed time has reached the set time at the processing time. The bandwidth is allocated.

In the bandwidth allocating apparatus according to the present invention, when the elapsed time reaches the set time, the distribution means immediately allocates the bandwidth to the request source of the bandwidth allocation request.

[0011] In the bandwidth allocation apparatus according to the present invention, the distribution means counts the number of requests for the bandwidth allocation request stored by the storage means for each request, and the number of bandwidth allocation requests whose count value has reached the set value is determined. The bandwidth is allocated to the request source.

In the bandwidth allocating apparatus according to the present invention, when the count value reaches the set value, the distribution means immediately allocates the bandwidth to the request source of the bandwidth allocation request.

The bandwidth allocation method according to the present invention reads out a bandwidth allocation request having the same content from among the stored bandwidth allocation requests, and determines the source of the bandwidth allocation request as 1
The same bandwidth is allocated to the above terminals, and the requested contents are broadcast.

[0014] In the band allocating method according to the present invention, when a band allocation request is received and the band allocation request is received, an elapsed time from the reception time is managed, and the elapsed time has reached a set time. The bandwidth is allocated to the request source of the bandwidth allocation request.

In the bandwidth allocation method according to the present invention, when a processing time for allocating a bandwidth is set, a bandwidth is allocated to a request source of a bandwidth allocation request whose elapsed time has reached a set time at the processing time. It is like that.

[0016] In the bandwidth allocation method according to the present invention, the bandwidth is allocated to the request source of the bandwidth allocation request as soon as the elapsed time reaches the set time.

The bandwidth allocation method according to the present invention counts the number of bandwidth allocation requests accumulated for each request content, and sends a request to the bandwidth allocation request source whose count value has reached the set value. Is assigned.

In the bandwidth allocation method according to the present invention, the bandwidth is allocated to the request source of the bandwidth allocation request as soon as the count value reaches the set value.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block diagram showing a bandwidth allocating apparatus according to Embodiment 1 of the present invention. In the figure, reference numeral 11 denotes a request individual management which receives a bandwidth allocation request from an arbitrary ONU and identifies a request source of the bandwidth allocation request. A unit 12 is a request content classification unit that identifies the content of the bandwidth allocation request and classifies the bandwidth allocation request. The request individual management unit 11 and the request content classification unit 12 constitute a classification unit.

Reference numeral 13 denotes a request-specific band request storage unit (storage means) for storing the bandwidth allocation requests classified by the request content classification unit 12 for each request content, and 14 denotes the same request content from the request content-specific band request storage unit 13. A bandwidth request granting unit (distribution means) for reading out the bandwidth allocation request, allocating the same bandwidth to one or more ONUs that have issued the bandwidth allocation request, and broadcasting the request content. is there.
FIG. 2 is a flowchart showing a band allocation method according to the first embodiment of the present invention.

Next, the operation will be described. Upon receiving a bandwidth allocation request from an ONU (step ST1), the request individual management unit 11 identifies the request source of the bandwidth allocation request from the ONU number information included in the bandwidth allocation request (step ST2), and The identification result and the bandwidth allocation request are output to the request content classifying unit 12.

The request content classifying unit 12 includes the request individual managing unit 1
Receiving the identification result and the bandwidth allocation request, the content of the request (eg, content service company, service type, content name, etc.) is identified from the bandwidth request information included in the bandwidth allocation request, and the bandwidth allocation request is classified. (Step ST3). FIG. 3A is an explanatory diagram showing an example of the request content. In this example, the request source is the first ONU, the content service company is “Company A”, the service type is “Movie”, and the content name is It indicates that the title is “I”.

When the request content classifying unit 12 classifies the bandwidth allocation request according to the request content, the request content-specific band request storage unit 13 stores the bandwidth allocation request according to the request content (step ST4). FIG. 3B is an explanatory diagram illustrating an example of accumulation of a bandwidth allocation request related to a content service company “Company A”. In FIG. 3B, for example, the service type is “movie”
When the content name is “title”, the request source of the bandwidth allocation request is number 1, 5, 11, 27
Of the ONU.

The request-specific band request permitting section 14 reads out from the request-specific band request accumulating section 13 a band allocation request having the same request content, and sends the same to one or more ONUs that have issued the request. (Step ST5). For example, if the content service company is "A
In the case of "company", the service type is "movie", and the content name is "title", the same bandwidth is allocated to the ONUs of Nos. 2, 6, and 14. When allocating the same band to one or more ONUs, the unit 14 broadcasts the request contents (step ST6).

The bandwidth request permitting unit 14 for each request content
The bandwidth allocation requests are sequentially read out for each request content unit, and the same bandwidth is allocated to the request source, but the read order of the bandwidth allocation requests for each request content unit may be constant,
The reading order may be changed every time a fixed time elapses.

As is apparent from the above, the first embodiment
According to the above, the bandwidth allocation request having the same request content is read out from the bandwidth request storage unit 13 for each request content, and the same bandwidth is allocated to one or more ONUs that are the request sources of the bandwidth allocation request. Is broadcasted, so that the band can be used efficiently.

Embodiment 2 FIG. FIG. 4 is a block diagram showing a band allocating apparatus according to Embodiment 2 of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. 21 receives a band allocation request from an arbitrary ONU, identifies the request source of the band allocation request, and outputs a request individual /
The reception time management unit (classification means) 22 reads out the bandwidth allocation request having the same request content from the bandwidth request storage unit 13 for each request content, and reads one or more ONUs which are the request sources of the bandwidth allocation request.
Is a request content-specific band request permitting unit (distribution means) for allocating the same bandwidth to the request and broadcasting the request content. The time is managed, and the bandwidth is allocated to the request source of the bandwidth allocation request whose elapsed time has reached the set time.

Next, the operation will be described. In the first embodiment, a case where a band is allocated to a request source of a band allocation request without giving particular consideration to a reception time (request time) of the band allocation request has been described. However, as shown in FIG. The separate bandwidth request permitting unit 22 may manage the elapsed time from the reception time of the bandwidth allocation request, and allocate the bandwidth to the request source of the bandwidth allocation request whose elapsed time has reached the set time.

More specifically, if the set time is set to 8 hours and the processing time is set to 3:00 pm, when the current time is 3:00 pm, the request content-specific band request permitting section 22
However, among the bandwidth allocation requests having the same request content, the request source of the bandwidth allocation request whose elapsed time from the reception time exceeds 8 hours is searched and the same bandwidth is allocated. For example, when the content service company is “Company A”, the service type is “Music distribution”, and the content name is “Song name“ c ””, the same band is allocated to the ONUs with numbers 4, 12, 13, and 21. .

Thus, for example, a service form such as a late-night discount system makes it possible to allocate a band at midnight when traffic is low, and has an effect that the band can be used more efficiently.

Embodiment 3 FIG. 6 is a block diagram showing a band allocating apparatus according to Embodiment 3 of the present invention. In the figure, the same reference numerals as those in FIG. 4 denote the same or corresponding parts, and a description thereof will be omitted. An elapsed time processing unit (distribution unit) 23 monitors the elapsed time and, when the elapsed time reaches the set time, notifies the request content-specific band request permission unit 22 of the fact.

Next, the operation will be described. In the second embodiment, the request-specific bandwidth request permitting unit 22 manages the elapsed time from the reception time of the bandwidth allocation request, and the request source of the bandwidth allocation request whose elapsed time has reached the set time at the processing time. The above shows the bandwidth allocation.
The elapsed time processing unit 23 manages the elapsed time from the reception time of the bandwidth allocation request, and when the elapsed time reaches the set time, the request content-specific band request permission unit 22
And the request-specific band request permission unit 22 may allocate the band to the request source of the band allocation request immediately after receiving the notification.

As a result, the waiting time from when the ONU transmits the bandwidth allocation request to when the bandwidth is actually allocated substantially coincides with the set time, so that the distribution start time of the requested content is guaranteed for each ONU. The effect that can be achieved.

Embodiment 4 FIG. 7 is a configuration diagram showing a band allocating apparatus according to Embodiment 4 of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, and a description thereof will be omitted. Reference numeral 24 denotes a request content band request accumulation / counting unit (accumulating means, distribution means) for accumulating the bandwidth allocation requests classified by the request content classifying section 12 for each request content, and counting the number of requests for the bandwidth allocation requests for each request content. ), 25 are bandwidth request accumulation / counting units 24 according to request contents
A bandwidth requesting unit that reads out a bandwidth allocation request having the same request content, allocates the same bandwidth to one or more ONUs that have issued the bandwidth allocation request, and broadcasts the request content. (Distribution means), and the request-specific bandwidth request permitting unit 25 counts the number of requests for the bandwidth allocation request stored for each request content, and requests the bandwidth allocation request whose count value has reached the set value. To allocate the bandwidth to

Next, the operation will be described. In the first embodiment, a case is described in which a bandwidth is allocated to a request source of a bandwidth allocation request without particularly considering the number of times of requesting the bandwidth allocation request. However, as shown in FIG. The unit 25 may manage the count value of the number of requests for the bandwidth allocation request, and allocate the bandwidth to the request source of the bandwidth allocation request whose count value has reached the set value.

Specifically, when the set value of the number of requests is set to “5”, the bandwidth request permitting unit 25 for each request content
Searches for a bandwidth allocation request whose number of requests has reached “5”, and allocates the same bandwidth to the request source. FIG.
In the example of (b), the content service company is “Company A”,
Since the bandwidth allocation request with the service type “music distribution” and the content name “music name“ c ”” has reached the set value, the same is applied to the ONUs with numbers 4, 12, 13, 21, 22, 23. Thus, there is an effect that the band can be preferentially allocated to the content with a high demand.

Embodiment 5 FIG. 9 is a block diagram showing a bandwidth allocating apparatus according to Embodiment 5 of the present invention. In the figure, the same reference numerals as those in FIG. 7 denote the same or corresponding parts, and a description thereof will be omitted. 26 monitors the count value of the number of requests,
When the count value reaches the set value, the count value processing unit (distribution means) notifies the request content-specific band request permission unit 25 of the fact.

Next, the operation will be described. In the fourth embodiment, the request-specific bandwidth request permitting unit 25 manages the count value of the number of requests, and allocates a bandwidth to the request source of the bandwidth allocation request whose count value has reached the set value. Although the count value processing unit 26 manages the count value of the number of requests, when the count value reaches the set value, the count value processing unit 26 notifies the request content-specific band request permission unit 25 of the fact that the count value has reached the set value. The bandwidth may be allocated to the request source of the bandwidth allocation request as soon as the request permission unit 25 receives the notification. As a result, there is an effect that the bandwidth can be immediately allocated to the content whose number of requests has increased.

Embodiment 6 FIG. FIG. 10 is a block diagram showing a bandwidth allocating apparatus according to Embodiment 6 of the present invention. In the figure, the same reference numerals as those in FIGS. 27 reads out a bandwidth allocation request having the same request content from the bandwidth request storage / counting unit 24 for each request content, allocates the same bandwidth to one or more ONUs that have requested the bandwidth allocation request, and Requesting section (distribution means) for each request for broadcasting
The request content-specific band request permitting unit 27 determines whether the request source of the band allocation request whose elapsed time from the reception time of the band allocation request has reached the set time or the count value of the number of requests has reached the set value. The bandwidth is allocated to the request source of the allocated bandwidth allocation request.

Next, the operation will be described. In the second embodiment, the bandwidth is allocated to the request source of the bandwidth allocation request whose elapsed time from the reception time has reached the set time. In the fourth embodiment, the count value of the number of requests is Although the bandwidth is allocated to the request source of the bandwidth allocation request that has reached the set value, as shown in FIG. 11, by managing the elapsed time from the reception time and the count value of the number of requests, The bandwidth is allocated to the request source of the bandwidth allocation request whose elapsed time from the reception time has reached the set time, or the request source of the bandwidth allocation request whose count value of the request count has reached the set value. You may. Thus, the effects of the second embodiment and the effects of the fourth embodiment can be obtained.

In the sixth embodiment, as in the third embodiment, when the elapsed time from the reception time reaches the set time, the bandwidth is immediately allocated to the request source of the bandwidth allocation request. (See FIG. 12). As in the fifth embodiment, when the count value of the number of requests reaches the set value, the bandwidth may be immediately allocated to the request source of the bandwidth allocation request (see FIG. 13).

[0042]

As described above, according to the present invention, the same band allocation request is read from the storage means, and the same band is allocated to one or more terminals which are the request sources of the band allocation request. Since the distribution means for allocating and broadcasting the requested contents is provided, there is an effect that the bandwidth can be used efficiently.

According to the present invention, when the classifying unit receives the band allocation request and receives the band allocation request, the distribution unit manages the elapsed time from the reception time, and the elapsed time reaches the set time. Is configured to allocate the bandwidth to the request source of the bandwidth allocation request, which makes it possible to allocate the bandwidth in the middle of the night when traffic is low, and has the effect that the bandwidth can be used more efficiently. .

According to the present invention, when the processing time for allocating the bandwidth is set, the distribution means allocates the bandwidth to the request source of the bandwidth allocation request whose elapsed time has reached the set time at the processing time. With such a configuration, there is an effect that a service form such as a late-night discount system can be adopted.

According to the present invention, when the elapsed time reaches the set time, the distribution means is configured to immediately allocate the bandwidth to the request source of the bandwidth allocation request. There is an effect that time can be guaranteed.

According to the present invention, the distribution unit counts the number of requests for the bandwidth allocation request stored by the storage unit for each request content, and sends the count to the request source of the band allocation request whose count value has reached the set value. Since the bandwidth is allocated to the content, there is an effect that the bandwidth can be preferentially allocated to the content with a high demand.

According to the present invention, when the count value reaches the set value, the distribution means is configured to immediately allocate the bandwidth to the request source of the bandwidth allocation request. There is an effect that the band can be allocated immediately.

According to the present invention, of the stored bandwidth allocation requests, the same bandwidth allocation request is read out, and the same bandwidth allocation request is transmitted to one or more terminals which are the request sources of the bandwidth allocation request. , And the contents of the request are broadcasted, so that the bandwidth can be used efficiently.

According to the present invention, when a bandwidth allocation request is received and the bandwidth allocation request is accepted, the time elapsed since the reception time is managed, and the bandwidth allocation request whose elapsed time has reached the set time is managed. Since the bandwidth is allocated to the request source of (1), the bandwidth can be allocated at midnight when traffic is low, and the bandwidth can be used more efficiently.

According to the present invention, when the processing time for allocating the bandwidth is set, the bandwidth is allocated to the request source of the bandwidth allocation request whose elapsed time has reached the set time at the processing time. Therefore, there is an effect that a service form such as a late-night discount system can be adopted.

According to the present invention, when the elapsed time reaches the set time, the bandwidth is immediately allocated to the request source of the bandwidth allocation request. Therefore, the distribution start time of the request content is guaranteed for each terminal. There is an effect that can be.

According to the present invention, the number of bandwidth allocation requests accumulated for each request content is counted, and the bandwidth is allocated to the request source of the bandwidth allocation request whose count value has reached the set value. Therefore, there is an effect that the bandwidth can be preferentially allocated to the content with a high demand.

According to the present invention, when the count value reaches the set value, the bandwidth is immediately allocated to the request source of the bandwidth allocation request. Therefore, the bandwidth is immediately allocated to the content whose number of requests has increased. There are effects that can be assigned.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a band allocation device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a band allocation method according to the first embodiment of the present invention.

FIG. 3A is an explanatory diagram illustrating an example of request contents. FIG. 4B is an explanatory diagram illustrating an example of accumulation of a bandwidth allocation request related to a content service company “Company A”.

FIG. 4 is a configuration diagram illustrating a band allocation device according to a second embodiment of the present invention.

FIG. 5A is an explanatory diagram showing an example of request contents. FIG. 4B is an explanatory diagram illustrating an example of accumulation of a bandwidth allocation request related to a content service company “Company A”.

FIG. 6 is a configuration diagram illustrating a band allocation device according to a third embodiment of the present invention.

FIG. 7 is a configuration diagram showing a band allocation device according to a fourth embodiment of the present invention.

FIG. 8A is an explanatory diagram showing an example of request contents. FIG. 4B is an explanatory diagram illustrating an example of accumulation of a bandwidth allocation request related to a content service company “Company A”.

FIG. 9 is a configuration diagram illustrating a bandwidth allocation device according to a fifth embodiment of the present invention.

FIG. 10 is a configuration diagram showing a band allocation device according to a sixth embodiment of the present invention.

FIG. 11A is an explanatory diagram illustrating an example of a request content. FIG. 4B is an explanatory diagram illustrating an example of accumulation of a bandwidth allocation request related to a content service company “Company A”.

FIG. 12 is a configuration diagram illustrating a band allocation device according to a sixth embodiment of the present invention.

FIG. 13 is a configuration diagram illustrating a band allocation device according to a sixth embodiment of the present invention.

FIG. 14 is a configuration diagram showing a conventional band allocation device.

[Explanation of symbols]

11 request individual management section (classification means), 12 request content classification section (classification means), 13 request content bandwidth request accumulation section (storage means), 14 request content bandwidth request permission section (distribution means), 21 request individual / Reception time management unit (classification unit), 22 bandwidth request permission unit for each request content (distribution unit),
23 elapsed time processing section (distribution means), 24 bandwidth request accumulation / counting section by request content (accumulation means, distribution means), 2
5 Bandwidth request permitting unit for each request content (distribution unit), 26 count value processing unit (distribution unit), 27 bandwidth request permitting unit for each request content (distribution unit).

Continued on front page F term (reference) 5K030 GA13 HA08 HC14 JL01 JL08 LC09 LD18 5K033 AA01 BA13 CA00 CB06 CB13 DA01 DA15 DA17 DB02 DB22 5K051 AA05 BB02 BB04 CC02 CC03 DD13 DD14 FF08 FF12 HH15 HH26 HH27 JJ03 JJ03

Claims (12)

[Claims] 1. A bandwidth allocation request is received from an arbitrary terminal,
Classification means for identifying the request content of the bandwidth allocation request and classifying the bandwidth allocation request, accumulating means for accumulating the bandwidth allocation requests classified by the classification means for each request content, and requesting the same content from the accumulating means. Read the bandwidth allocation request,
A bandwidth allocating apparatus comprising: a distribution unit that allocates the same bandwidth to one or more terminals that are requesters of the bandwidth allocation request and broadcasts the request. 2. The distribution means, when the classifying means receives a bandwidth allocation request and receives the bandwidth allocation request, manages an elapsed time from the reception time, and the elapsed time has reached a set time. The bandwidth allocating apparatus according to claim 1, wherein a bandwidth is allocated to a request source of the bandwidth allocation request. 3. The distribution means, when a processing time for allocating a bandwidth is set, allocates a bandwidth to a request source of a bandwidth allocation request whose elapsed time has reached a set time at the processing time. The bandwidth allocating apparatus according to claim 2, wherein 4. The bandwidth allocating apparatus according to claim 2, wherein said distribution means allocates a bandwidth to a request source of the bandwidth allocation request as soon as the elapsed time reaches a set time. 5. The distribution means counts the number of requests for bandwidth allocation requests stored by the storage means for each request content, and sends a request to the request source of the bandwidth allocation request whose count value has reached a set value. The bandwidth allocation apparatus according to any one of claims 1 to 4, wherein bandwidth allocation is performed. 6. The bandwidth allocating apparatus according to claim 5, wherein the distribution unit allocates the bandwidth to the request source of the bandwidth allocation request as soon as the count value reaches the set value. 7. A bandwidth allocation request is received from an arbitrary terminal,
When the content of the bandwidth allocation request is identified and the bandwidth allocation request is classified, the bandwidth allocation request is stored for each request content, and among the stored bandwidth allocation requests, the same bandwidth allocation request is used. And assigns the same bandwidth to one or more terminals that are the requesters of the bandwidth allocation request, and broadcasts the requested content. 8. When a bandwidth allocation request is received and the bandwidth allocation request is received, an elapsed time from the reception time is managed, and a request source of the bandwidth allocation request whose elapsed time has reached a set time is provided. The bandwidth allocation method according to claim 7, wherein a bandwidth is allocated to the bandwidth. 9. When a processing time for allocating a band is set, a band is allocated to a request source of a band allocation request whose elapsed time has reached a set time at the processing time. 9. The bandwidth allocation method according to 8. 10. The bandwidth allocation method according to claim 8, wherein the bandwidth is immediately allocated to the request source of the bandwidth allocation request when the elapsed time reaches the set time. 11. A method of counting the number of bandwidth allocation requests stored for each request content, and allocating a bandwidth to a request source of the bandwidth allocation request whose count value has reached a set value. The bandwidth allocation method according to any one of claims 7 to 10. 12. The bandwidth allocation method according to claim 11, wherein when the count value reaches a set value, a bandwidth is immediately allocated to a request source of the bandwidth allocation request.