Pacing control device, pacing control method, and program

1. A pacing control device to perform pacing control on a content distributed from a content distribution device that performs streaming-based content distribution, the pacing control device comprising:

an obtainer configured to obtain a communication quality threshold that corresponds to a communication environment in the pacing control device; and

a controller configured not to make a request for the content to the content distribution device in a case where a communication quality in the pacing control device is lower than the communication quality threshold, and to make the request for the content to the content distribution device in a case where the communication quality is higher than the communication quality threshold.

2. The pacing control device as claimed in claim 1 , wherein the pacing control device further includes a playback unit to play back the content,

wherein even in the case where the communication quality is lower than the communication quality threshold, in a case where a buffered amount of the content in the playback unit is less than a first threshold, the controller makes the request for the content to the content distribution device, and

wherein even in the case where the communication quality is higher than the communication quality threshold, in a case where the buffered amount of the content in the playback unit is greater than a second threshold, the controller does not make the request for the content to the content distribution device.

3. The pacing control device as claimed in claim 1 , wherein in the case where the communication quality is lower than the communication quality threshold, the controller compares a maximum bit rate provided for the content with the communication quality, so as not to make the request for the content in a case where the maximum bit rate is greater than the communication quality, and so as to make the request for the content in a case where the communication quality is greater than the maximum bit rate.

4. The pacing control device as claimed in claim 1 , wherein the obtainer obtains the communication quality threshold corresponding to the communication environment in the pacing control device, from a network quality responder that holds one or more communication quality thresholds associated with respective communication environments.

5. The pacing control device as claimed in claim 4 , further comprising:

a communication quality reporter configured to transmit a communication quality measured in the pacing control device to the network quality responder,

wherein the network quality responder calculates the communication quality threshold based on the transmitted communication quality.

6. A pacing control method executed by a pacing control device to perform pacing control on a content distributed from a content distribution device that performs streaming-based content distribution, the pacing control method comprising:

an obtaining step of obtaining a communication quality threshold that corresponds to a communication environment in the pacing control device; and

a controlling step of not making a request for the content to the content distribution device in a case where a communication quality in the pacing control device is lower than the communication quality threshold, and making a request for the content to the content distribution device in a case where the communication quality is higher than the communication quality threshold.

7. The pacing control method as claimed in claim 6 , wherein the pacing control device further includes a playback unit to play back the content,

wherein even in the case where the communication quality is lower than the communication quality threshold, in a case where a buffered amount of the content in the playback unit is less than a first threshold, the controlling step makes the request for the content to the content distribution device, and

wherein even in the case where the communication quality is higher than the communication quality threshold, in a case where the buffered amount of the content in the playback unit is greater than a second threshold, the controlling step does not make the request for the content to the content distribution device.

8. A non-transitory computer-readable recording medium including a program stored therein for causing a computer to execute the pacing control method as claimed in claim 6 .