WO2015174069A1 - 通信システム、受信側装置、送信側装置、および、通信方法 - Google Patents
通信システム、受信側装置、送信側装置、および、通信方法 Download PDFInfo
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- WO2015174069A1 WO2015174069A1 PCT/JP2015/002375 JP2015002375W WO2015174069A1 WO 2015174069 A1 WO2015174069 A1 WO 2015174069A1 JP 2015002375 W JP2015002375 W JP 2015002375W WO 2015174069 A1 WO2015174069 A1 WO 2015174069A1
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- transmission
- reception
- time information
- side device
- measurement
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/30—Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
- H04L43/0882—Utilisation of link capacity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
- H04L43/0858—One way delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
- H04L43/106—Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps
Definitions
- the present invention relates to a communication system, a receiving device, a transmitting device, and a communication method.
- networks such as the Internet are composed of devices having various communication resources, and various communications are performed. For this reason, it is required to grasp the situation such as delay and available bandwidth in the network.
- active measurement for measuring a situation in a network by transmitting measurement data (packets) to the network is known.
- Patent Document 1 a plurality of measurement packets whose packet sizes are sequentially increased or decreased are transmitted at a predetermined transmission interval, a reception interval of the measurement packet is measured, a transmission interval of the measurement packet, a reception interval, Describes a system for calculating the available bandwidth by comparing.
- the available bandwidth is calculated using a measurement packet having the largest packet size among measurement packets having the same reception interval and transmission interval.
- the estimation accuracy of the available bandwidth (also referred to as an available bandwidth) may be lowered.
- the network bandwidth measurement system described in Patent Document 1 it can be used based on the packet size and the transmission interval of the measurement packet transmitted immediately before the measurement packet whose reception interval is larger than the transmission interval. Bandwidth is calculated.
- the network bandwidth measurement system calculates the available bandwidth so that a queuing delay occurs so that the transmission interval of each measurement packet, the packet size, Need to be set.
- the network bandwidth measurement system sets the transmission interval and packet size of the measurement packet so that the instantaneous bandwidth used for the packet train consisting of multiple measurement packets is larger than the available bandwidth to be estimated. To do.
- the packet size of a measurement packet to be transmitted is a range of packet sizes that can pass through the network such as the IP network. Is set to fit. Therefore, when estimating a wider available bandwidth, it is necessary to set a transmission interval of measurement packets included in the packet train to be short.
- the difference between the actual transmission interval (actual transmission interval) and the set transmission interval (set transmission interval) increases depending on the performance of the transmission-side device. .
- the queuing delay has a value different from the actual queuing delay. Therefore, in the technique described in Patent Document 1, there is a possibility that the available bandwidth may be estimated using the queuing delays having different values, and therefore the available bandwidth estimation accuracy may be lowered.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a technique for estimating the available bandwidth with higher accuracy.
- a communication system includes a transmission unit that transmits each of a plurality of measurement packets at a predetermined transmission interval, and a reception unit that receives the plurality of measurement packets after passing a predetermined network a predetermined number of times. And using the reception time information indicating temporal information regarding the reception of the measurement packet and the transmission time information indicating temporal information regarding the transmission of the measurement packet, the cumulative value of the queuing delay is calculated, Useable bandwidth estimation means for estimating the available bandwidth of the network using the calculated cumulative value of the queuing delay.
- a reception-side apparatus is a reception-side apparatus that receives data from a transmission-side apparatus that is communicably connected via a network, and a plurality of measurement packets transmitted from the transmission-side apparatus
- Receiving means for receiving transmission time information indicating temporal information relating to transmission of the measurement packet; reception time information indicating temporal information relating to reception of the measurement packet; and the transmission received by the receiving means
- a usable bandwidth estimation means for computing a cumulative value of the queuing delay using the time information and estimating a usable bandwidth using the calculated cumulative value of the queuing delay.
- a transmission-side apparatus is a transmission-side apparatus that transmits data to a reception-side apparatus that is communicably connected via a network, and each of a plurality of measurement packets is transmitted at a predetermined transmission interval.
- An available bandwidth estimation unit that calculates a cumulative value of queuing delay using transmission time information indicating temporal information related to transmission of a measurement packet, and estimates an available bandwidth using the calculated cumulative value of queuing delay And comprising.
- a communication method transmits each of a plurality of measurement packets at a predetermined transmission interval, receives the plurality of measurement packets after passing a predetermined network a predetermined number of times, A cumulative value of queuing delay is calculated using reception time information indicating temporal information regarding reception and transmission time information indicating temporal information regarding transmission of the measurement packet, and the calculated queuing delay is calculated.
- the available bandwidth of the network is estimated using the accumulated value.
- a computer program that realizes the communication system, the transmission-side device, the reception-side device, or the communication method by a computer, and a computer-readable storage medium that stores the computer program are also included in the scope of the present invention. include.
- the available bandwidth can be estimated with higher accuracy.
- FIG. 1 is a diagram illustrating an example of a configuration of a communication system according to the present embodiment and a functional configuration of each device included in the communication system.
- the communication system 10 includes a transmission side device 100 and a reception side device 200.
- the transmission side device 100 and the reception side device 200 are connected to each other via a network 300 so that they can communicate with each other.
- the communication system 10 shown in FIG. 1 is an example, and the present embodiment is not limited to this.
- the communication system 10 may be configured to include a plurality of transmission-side devices 100 and reception-side devices 200, or may be configured to include devices other than the transmission-side device 100 and the reception-side device 200. .
- the communication means between the devices is not particularly limited, and may be, for example, TCP (Transmission Control Protocol), UDP (User Datagram Protocol), ICMP (Internet Control Message Protocol), IP (Internet Protocol), or the like. However, other means may be used.
- TCP Transmission Control Protocol
- UDP User Datagram Protocol
- ICMP Internet Control Message Protocol
- IP Internet Protocol
- the transmission-side device 100 includes a transmission unit 110.
- the transmission unit 110 is a means for transmitting data to the network 300.
- the transmission unit 110 generates a packet train from a plurality of measurement packets to be transmitted to the reception-side device 200. Then, the transmission unit 110 transmits a packet train composed of the plurality of measurement packets to the reception side device 200 via the network 300. Specifically, the transmission unit 110 sequentially transmits a plurality of measurement packets included in the packet train at a predetermined transmission interval.
- the transmission interval is an interval for transmitting a plurality of measurement packets constituting the packet train.
- the transmission interval is also called a packet interval of the packet train.
- the predetermined transmission interval is a transmission interval set in advance. This predetermined transmission interval may be stored in a storage device (not shown).
- a preset transmission interval is also referred to as a set transmission interval.
- the transmission unit 110 transmits the transmission time information of the transmitted measurement packet to the reception-side apparatus 200 via the network 300.
- the transmission time information is time information related to the transmission of the measurement packet.
- Transmission time information is information which shows the time which transmitted the measurement packet, for example.
- the transmission time information is not limited to this, and may be information indicating the actual transmission interval of the measurement packet.
- the actual transmission interval is a time between the transmission time of a certain measurement packet that is actually transmitted and the transmission time of the measurement packet that is actually transmitted next. This actual transmission interval is also referred to as an actual transmission interval, in distinction from the set transmission interval described above.
- the transmission time information may be information indicating a difference between the set transmission interval and the actual transmission interval.
- the transmission time information may be a combination of information indicating the time at which the measurement packet is transmitted, information indicating the actual transmission interval of the measurement packet, and information indicating a difference between the set transmission interval and the actual transmission interval. .
- the reception-side device 200 includes a reception unit 210 and an available bandwidth estimation unit 220.
- the receiving unit 210 is a means for receiving data from the transmission side device 100 via the network 300.
- the receiving unit 210 receives a plurality of measurement packets included in the packet train, transmitted from the transmission side device 100. Then, the reception unit 210 supplies the reception time information of the measurement packet to the available bandwidth estimation unit 220.
- the reception time information is time information related to the reception of the measurement packet.
- the reception time information is information indicating the time when the measurement packet is received, for example.
- the reception time information is not limited to this, and may be information indicating the reception interval of the measurement packet.
- a specific method for receiving the packet train is not particularly limited, and for example, the technique described in Patent Document 1 is used, and thus the description thereof is omitted in the present embodiment.
- the receiving unit 210 receives transmission time information transmitted from the transmission side device 100. Then, the reception unit 210 supplies the received transmission time information to the available bandwidth estimation unit 220.
- the available bandwidth estimation unit 220 calculates a cumulative value of the queuing delay (cumulative queuing delay) using the reception time information and the transmission time information. Then, the available bandwidth estimation unit 220 estimates the available bandwidth using the calculated accumulated queuing delay.
- the estimation method of the usable band in the usable band estimation part 220 which concerns on this Embodiment is performed using the technique of patent document 1, for example, detailed description is abbreviate
- FIG. 2 is a flowchart showing an example of the processing flow of the communication system 10 according to the present embodiment.
- the flowchart on the left shows the process flow of the transmission side apparatus 100
- the flowchart on the right shows the process flow of the reception side apparatus 200.
- a broken arrow indicates a flow of information (data) between the transmission side device 100 and the reception side device 200.
- the transmission unit 110 of the transmission side device 100 sequentially transmits a plurality of measurement packets included in the packet train to the reception side device 200 at a predetermined transmission interval (step S21).
- the transmission unit 110 of the transmission side device 100 transmits the transmission time information of the transmitted measurement packet to the reception side device 200 (step S22).
- the transmission unit 110 may transmit the transmission time information every time the measurement packet is transmitted. In the above case, after all measurement packets are transmitted, the transmission unit 110 may transmit the transmission time information of each measurement packet in the order of transmission of the measurement packets, or the transmission time information of any measurement packet. It may be transmitted together with information for identifying whether or not.
- the transmission unit 110 may transmit information indicating these transmission intervals as transmission time information after transmitting two or more measurement packets. Good. In the above case, the transmission unit 110 may transmit the transmission time information in the order in which the measurement packets are received after all the measurement packets have been transmitted, and identify which measurement packet is between them. You may transmit with information.
- the transmission unit 110 transmits two or more measurement packets, and then transmits these transmission intervals (actual transmission interval) and the set transmission.
- the difference from the interval may be transmitted as transmission time information.
- the transmission unit 110 may transmit the transmission time information in the order in which the measurement packets are received after all the measurement packets have been transmitted, and identify which measurement packet is between them. You may transmit with information.
- the receiving unit 210 of the receiving device 200 receives the measurement packet transmitted from the transmitting device 100 in step S21 (step S23).
- the receiving part 210 of the receiving side apparatus 200 receives the transmission time information transmitted from the transmitting side apparatus 100 in step S22 (step S24).
- the available bandwidth estimation unit 220 of the reception-side device 200 receives the reception time information of the plurality of measurement packets (packet trains) received by the reception unit 210 in step S23 and the transmission time received by the reception unit 210 in step S24.
- the accumulated queuing delay is calculated using the information (step S25).
- the available bandwidth estimation unit 220 of the reception-side apparatus 200 estimates the available bandwidth using the calculated accumulated queuing delay (step S26), and ends the process.
- the packet interval (set transmission interval) of the preset packet train is 1 ms.
- the packet train is assumed to be composed of five measurement packets having packet sizes of 100 bytes, 110 bytes, 120 bytes, 130 bytes, and 140 bytes, respectively.
- the transmission time information and the reception time information are an actual transmission interval and a reception interval, respectively. Further, it is assumed that the order of measurement packets has not been changed in the network, and the actual transmission interval and the reception interval are in packet transmission order.
- the transmission unit 110 attempts to transmit at the set transmission interval. At this time, the transmission intervals actually transmitted by the transmitter 110 were 1.0 ms, 0.8 ms, 0.9 ms, and 0.9 ms in the order of measurement packet transmission. The transmission unit 110 transmits the actual transmission interval “1.0 ms, 0.8 ms, 0.9 ms, 0.9 ms” to the reception-side apparatus 200 as transmission time information.
- the reception unit 210 of the reception side device 200 receives the packet train transmitted by the transmission unit 110.
- the reception interval at which the reception unit 210 received each measurement packet was 1.0 ms, 1.0 ms, 1.0 ms, and 1.0 ms in the order of reception of the measurement packets.
- the reception unit 210 supplies this reception interval “1.0 ms, 1.0 ms, 1.0 ms, 1.0 ms” to the available bandwidth estimation unit 220 as reception time information.
- the reception unit 210 of the reception-side apparatus 200 receives the transmission time information “1.0 ms, 0.8 ms, 0.9 ms, 0.9 ms” transmitted by the transmission unit 110.
- the receiving unit 210 supplies the received transmission time information “1.0 ms, 0.8 ms, 0.9 ms, 0.9 ms” to the available bandwidth estimation unit 220.
- the available bandwidth estimation unit 220 of the reception-side apparatus 200 calculates the cumulative queuing delay using the reception time information and the transmission time information supplied from the reception unit 210.
- the cumulative queuing delay of the nth transmitted measurement packet (referred to as measurement packet n) is, for example, to calculate the sum of the interval differences (reception interval-transmission interval) from measurement packet 1 to measurement packet n. Obtained by. That is, the available bandwidth estimation unit 220 calculates the accumulated queuing delay “0 ms, 0.2 ms, 0.3 ms, 0.4 ms” from the reception time information and the transmission time information.
- the communication system 10 includes the transmission side device 100 and the reception side device 200 that are communicably connected to each other via the network 300.
- the available bandwidth can be estimated with higher accuracy.
- the transmission unit 110 of the transmission-side device 100 transmits each of the plurality of measurement packets at a predetermined transmission interval, and further transmits transmission time information indicating temporal information regarding the transmission of the measurement packet. .
- the receiving part 210 of the receiving side apparatus 200 receives the some measurement packet transmitted from the transmitting side apparatus 100, and transmission time information.
- the available bandwidth estimation unit 220 of the receiving-side apparatus 200 calculates the accumulated value of the queuing delay using the reception time information indicating the time information related to the reception of the measurement packet and the transmission time information, and calculates the calculation. This is because the available bandwidth is estimated using the accumulated value of the queuing delay.
- the communication system 10 transmits the transmission time information of the measurement packet actually transmitted from the transmission-side device 100 to the reception-side device 200, from the transmission-side device 100 to the reception-side device 200.
- the apparatus 200 can know the actual transmission interval of the measurement packet.
- the available bandwidth estimation unit 220 of the receiving-side apparatus 200 can calculate the actual accumulated queuing delay value.
- the reception-side apparatus 200 calculates the cumulative queuing delay assuming that the actual transmission interval is equal to the set transmission interval. In this case, since the set transmission interval matches the reception interval, the accumulated queuing delay is “0 ms, 0 ms, 0 ms, 0 ms”.
- the accumulated queuing delay may not be an accurate value.
- the difference between the actual transmission interval and the set transmission interval becomes significant. Accordingly, when the accumulated queuing delay is calculated without using the actual transmission interval, an accurate value is not obtained, and the estimation accuracy of the available bandwidth estimated using such accumulated queuing delay becomes low.
- the reception-side apparatus 200 of the communication system 10 calculates the accumulated queuing delay using the transmission time information, “0 ms, 0. 2 ms, 0.1 ms, 0.1 ms ”can be obtained. Therefore, the accumulated queuing delay becomes “0 ms, 0.2 ms, 0.3 ms, 0.4 ms”, and the receiving-side apparatus 200 can calculate the accumulated queuing delay reflecting the actual delay amount.
- the available bandwidth estimation unit 220 can estimate the available bandwidth using the accumulated value of the queuing delay calculated using the actual transmission interval. Therefore, the communication system 10 according to the present embodiment accurately estimates the available bandwidth even when the difference between the actual transmission interval for the plurality of measurement packets in the packet train and the set transmission interval is significant, for example. can do.
- FIG. 3 is a diagram illustrating an example of a configuration of a communication system according to the present embodiment and a functional configuration of each device included in the communication system.
- the communication system 20 includes a transmission side device 101 and a reception side device 200. Similar to the transmission-side device 100, the transmission-side device 101 is connected to the reception-side device 200 via the network 300 so that they can communicate with each other.
- the communication means between the devices is not particularly limited as in the first embodiment.
- the transmission-side apparatus 101 is configured to include a packet generation unit 120 in the transmission-side apparatus 100 according to the first embodiment.
- the packet generator 120 generates a measurement packet that combines transmission time information for a transmitted measurement packet and an untransmitted measurement packet. That is, the packet generation unit 120 embeds the transmission time information of the measurement packet already transmitted in the packet train in the measurement packet in the packet train to be transmitted. At this time, the size of the measurement packet in which the transmission time information is embedded is made equal to the set packet size of the measurement packet in the packet train.
- the packet size of the measurement packet in the packet train is set to 50 bytes.
- the header size when the measurement packet is transmitted by UDP is 45 bytes.
- the transmission interval (transmission time information) between the measurement packet immediately before the measurement packet and the measurement packet that has been transmitted and the measurement packet immediately before is “0.9 ms”.
- the packet generator 120 creates information indicating 5-byte transmission time information obtained by subtracting the header size from the packet size.
- the 5-byte information and the 45-byte header are combined to generate a 50-byte measurement packet.
- the 5-byte information may be data in any format.
- the packet generation unit 120 may create 5-byte information indicating transmission time information as text data. Good.
- FIG. 4 is a flowchart showing an example of the processing flow of the communication system 20 according to the present embodiment.
- the flowchart on the left shows the processing flow of the transmission side apparatus 101
- the flowchart on the right shows the processing flow of the reception side apparatus 200.
- a broken arrow indicates a flow of information (data) between the transmission side apparatus 101 and the reception side apparatus 200.
- the transmission unit 110 of the transmission side apparatus 101 transmits at least one of a plurality of measurement packets included in the packet train to the reception side apparatus 200 (step S41).
- the packet generation unit 120 of the transmission-side apparatus 101 generates a measurement packet in which transmission time information for the transmitted measurement packet is embedded (step S42). And the transmission part 110 transmits the measurement packet produced
- the packet generator 120 measures the measurement packet in which the transmission time information for the transmitted measurement packet is embedded after one or more measurement packets are transmitted. Is generated.
- the packet generation unit 120 transmits two or more measurement packets. After that, a measurement packet in which transmission time information for the transmitted measurement packet is embedded is generated.
- the packet generation unit 120 of the transmission side apparatus 101 confirms whether or not all the measurement packets in the packet train transmitted by the transmission unit 110 have been transmitted (step S44). If all the measurement packets in the packet train have not been transmitted (NO in step S44), transmission side apparatus 101 repeats step S42 and step S43.
- the transmission unit 110 of the transmission side apparatus 101 transmits transmission time information (remaining transmission time information) not transmitted to the reception side apparatus 200.
- the transmission is performed (step S45), and the processing on the transmission side apparatus 101 side is terminated.
- the receiving unit 210 of the receiving side device 200 receives the measurement packet transmitted from the transmitting side device 101 in step S41 (step S46).
- the receiving unit 210 receives the measurement packet in which the transmission time information is embedded transmitted from the transmission side device 101 in step S43 (step S47).
- the reception unit 210 receives the remaining transmission time information transmitted from the transmission side device 101 in step S45 (step S48).
- the available bandwidth estimation unit 220 obtains the reception time information of the plurality of measurement packets (packet trains) received by the reception unit 210 in steps S46 and S47 and the transmission time information received by the reception unit 210 in step S48.
- the accumulated queuing delay is calculated by using (Step S49).
- the available bandwidth estimation unit 220 of the receiving-side apparatus 200 estimates the available bandwidth using the calculated accumulated queuing delay (step S50), and ends the process.
- effect According to the communication system 20 according to the present embodiment, in addition to the effects according to the first embodiment, the number of communications between the transmission-side apparatus 101 and the reception-side apparatus 200 can be further reduced.
- the packet generation unit 120 of the transmission-side apparatus 101 generates a measurement packet that combines transmission time information for a transmitted measurement packet and an untransmitted measurement packet. This is because the measurement packet generated by the transmission unit 110 of the transmission side apparatus 101 is transmitted to the reception side apparatus 200.
- the number of communications can be reduced as compared with the case of transmitting the transmission time information and the measurement packet separately.
- the example of performing the estimation of the available bandwidth by the receiving-side apparatus 200 has been described as an example, but the present embodiment is not limited to this.
- the available bandwidth may be estimated by the transmission side device.
- a configuration in which the available bandwidth is estimated by the transmission side device will be described.
- FIG. 5 is a diagram illustrating an example of a configuration of a communication system according to the present embodiment and a functional configuration of each device included in the communication system.
- the communication system 30 includes a transmission side device 102 and a reception side device 202. Similar to the first and second embodiments described above, the transmission-side device 102 and the reception-side device 202 are connected to each other via a network 300 so as to communicate with each other.
- the communication means between the devices is not particularly limited as in the first embodiment.
- the reception side device 202 includes a transmission / reception unit 230 as shown in FIG.
- the transmission / reception unit 230 receives a plurality of measurement packets constituting the packet train transmitted from the transmission-side apparatus 102 via the network 300. Then, the transmission / reception unit 230 returns the received measurement packet to the transmission side device 102.
- the transmission / reception unit 230 may be realized by a passive component such as a circulator, for example.
- the transmission-side apparatus 102 includes a transmission unit 110, a reception unit 130, a storage unit 140, and an available bandwidth estimation unit 150.
- the receiving unit 130 receives a plurality of measurement packets returned from the receiving side device 202. Then, the reception unit 130 supplies the reception time information of the received measurement packet to the available bandwidth estimation unit 150.
- the storage unit 140 is means for storing transmission time information of the measurement packet transmitted by the transmission unit 110.
- the transmission unit 110 stores the transmission time information in the storage unit 140.
- storage part 140 is the structure incorporated in the transmission side apparatus 102, this Embodiment is not limited to this.
- the storage unit 140 may be a storage device connected to the outside of the transmission side device 102.
- the available bandwidth estimation unit 150 uses reception time information indicating temporal information related to reception of the measurement packet returned from the reception-side device 202 and transmission time information indicating temporal information related to transmission of the measurement packet. Calculate the cumulative value of the queuing delay. Then, similarly to the available bandwidth estimation unit 220 according to the first embodiment, the available bandwidth estimation unit 150 estimates the available bandwidth using the calculated accumulated value of the queuing delay.
- FIG. 6 is a flowchart illustrating an example of a processing flow of the communication system 30 according to the present embodiment.
- the flowchart on the left shows the process flow of the transmitting apparatus 102
- the flowchart on the right shows the process flow of the receiving apparatus 202.
- a broken arrow indicates a flow of information (data) between the transmission side apparatus 102 and the reception side apparatus 202.
- the transmission unit 110 of the transmission side apparatus 102 sequentially transmits a plurality of measurement packets included in the packet train to the reception side apparatus 202 at a predetermined transmission interval (step S61).
- step S62 the transmission part 110 of the transmission side apparatus 102 stores the transmission time information which transmitted the measurement packet in the memory
- the transmission / reception unit 230 of the reception side device 202 receives the measurement packet transmitted from the transmission side device 102 in step S61 (step S63). Then, when receiving the measurement packet, the transmission / reception unit 230 of the reception-side device 202 returns the received measurement packet to the transmission-side device 102 immediately after reception (step S64), and ends the processing of the reception-side device 202.
- the reception unit 130 of the transmission side apparatus 102 receives the measurement packet transmitted (returned) from the reception side apparatus 202 in step S64 (step S65).
- the available bandwidth estimation unit 150 of the transmission-side apparatus 102 uses the transmission time information stored in the storage unit 140 in step S62 and the plurality of measurement packets (packet train) received by the reception unit 130 in step S65. An accumulated queuing delay is calculated (step S66).
- the available bandwidth estimation unit 150 of the transmission-side apparatus 102 estimates the available bandwidth using the calculated accumulated queuing delay (step S67), and ends the process.
- the packet interval (set transmission interval) of the preset packet train is 1 ms.
- the packet train is assumed to be composed of five measurement packets having packet sizes of 100 bytes, 110 bytes, 120 bytes, 130 bytes, and 140 bytes, respectively.
- the transmission time information and the reception time information are an actual transmission interval and a reception interval, respectively. Further, it is assumed that the order of measurement packets has not been changed in the network, and the actual transmission interval and the reception interval are in packet transmission order.
- the transmission unit 110 attempts to transmit at the set transmission interval. At this time, the transmission intervals actually transmitted by the transmitter 110 were 1.0 ms, 0.8 ms, 0.9 ms, and 0.9 ms in the order of measurement packet transmission.
- the transmission unit 110 stores the actual transmission interval “1.0 ms, 0.8 ms, 0.9 ms, 0.9 ms” in the storage unit 140 as transmission time information.
- the transmission / reception unit 230 of the reception side device 202 receives the packet train transmitted by the transmission unit 110 and returns the measurement packet included in the packet train to the transmission side device 102 immediately after reception.
- the reception unit 130 of the transmission side device 102 receives the returned measurement packet.
- the reception interval at which the receiving unit 130 received each measurement packet was 1.0 ms, 1.0 ms, 1.0 ms, and 1.0 ms in the order of reception of the measurement packets.
- the reception unit 130 supplies this reception interval “1.0 ms, 1.0 ms, 1.0 ms, 1.0 ms” to the available bandwidth estimation unit 150 as reception time information.
- the available bandwidth estimation unit 150 of the transmission side device 102 acquires transmission time information from the storage unit 140. Then, the usable bandwidth estimation unit 150 calculates the accumulated queuing delay using the acquired transmission time information and the reception time information supplied from the reception unit 130. The available bandwidth estimation unit 150 calculates a cumulative queuing delay “0 ms, 0.2 ms, 0.3 ms, 0.4 ms” from the reception time information and the transmission time information.
- the communication system 30 includes the transmission-side device 102 and the reception-side device 202 that are communicably connected to each other via the network 300.
- the available bandwidth can be estimated with higher accuracy.
- the transmission unit 110 of the transmission side device 102 transmits each of the plurality of measurement packets at a predetermined transmission interval, and the reception unit 130 receives the plurality of measurement packets returned from the reception side device 202. Then, the usable bandwidth estimation unit 150 calculates the cumulative value of the queuing delay using the reception time information and the transmission time information, and estimates the usable bandwidth using the calculated cumulative value of the queuing delay. is there.
- the transmission side device 102 calculates the accumulated queuing delay without using the transmission time information
- the set transmission interval and the reception interval coincide with each other, and therefore the accumulated queuing delay is “0 ms, 0 ms. , 0 ms, 0 ms ”.
- the transmission side device 102 in the communication system 30 calculates the accumulated queuing delay using transmission time information such as the actual transmission interval, the difference between the actual transmission interval and the reception interval is calculated. Some “0 ms, 0.2 ms, 0.1 ms, 0.1 ms” can be obtained. Therefore, the accumulated queuing delay becomes “0 ms, 0.2 ms, 0.3 ms, 0.4 ms”, and the transmission-side apparatus 102 can calculate the accumulated queuing delay reflecting the actual delay amount.
- the available bandwidth estimation unit 150 can estimate the available bandwidth using the accumulated value of the queuing delay calculated using the actual transmission interval.
- reception side device 202 of the communication system 30 according to the present embodiment is realized with a simpler configuration than the reception side device 200 of the first embodiment.
- the configuration of the reception-side device 202 can be simplified, so that versatility can be improved.
- the load applied to the network 300 can be reduced as compared with the communication system according to the first or second embodiment.
- FIG. 7 is a diagram illustrating an example of a configuration of the communication system 40 according to the present embodiment.
- the communication system 40 includes a transmission unit 41, a reception unit 42, and an available bandwidth estimation unit 43.
- the transmission unit 41 transmits each of the plurality of measurement packets at a predetermined transmission interval.
- the transmission unit 41 corresponds to, for example, the transmission unit 110 provided in the above-described transmission side device (100, 101, 102).
- the transmission unit 41 stores transmission time information indicating temporal information regarding the transmission of the measurement packet in a network or a storage unit (not shown) that can store the transmission time information.
- the receiving unit 42 receives a plurality of measurement packets after passing a predetermined network a predetermined number of times.
- the reception unit 42 corresponds to, for example, the reception unit 210 of the reception side device 200 or the reception unit 130 of the transmission side device 102 described above.
- the receiving unit 42 stores reception time information indicating temporal information related to reception of the measurement packet in a network or a storage unit (not shown) that can store the transmission time information.
- the available bandwidth estimation unit 43 calculates the accumulated value of the queuing delay using the reception time information and the transmission time information, and estimates the available bandwidth of the network using the calculated accumulated value of the queuing delay. .
- the available bandwidth estimation unit 43 corresponds to, for example, the available bandwidth estimation unit 220 of the reception side device 200 or the available bandwidth estimation unit 150 of the transmission side device 102 described above.
- the available bandwidth estimation unit 43 calculates a cumulative value of the queuing delay using the reception time information stored in the storage unit or received via the network and the transmission time information.
- the available bandwidth of the network can be estimated with higher accuracy, as in the communication system according to each of the embodiments described above.
- each part of the transmission side apparatus and the reception side apparatus illustrated in FIGS. 1, 3, 5, and 7 may be realized by hardware resources illustrated in FIG. That is, the configuration illustrated in FIG. 8 includes a RAM (Random Access Memory) 301, a ROM (Read Only Memory) 302, a communication interface 303, a storage medium 304, and a CPU (Central Processing Unit) 305.
- the CPU 305 controls the overall operation of the transmission side apparatus or the reception side apparatus by reading various software programs (computer programs) stored in the ROM 302 or the storage medium 304 into the RAM 301 and executing them.
- the CPU 305 executes a software program that executes each function (each unit) included in the transmission-side device and the reception-side device while appropriately referring to the ROM 302 or the storage medium 304.
- the CPU 305 stores the computer program in the RAM 301. This is realized by reading and executing.
- the supplied computer program may be stored in a computer-readable storage device such as a readable / writable memory (temporary storage medium) or a hard disk device.
- a computer-readable storage device such as a readable / writable memory (temporary storage medium) or a hard disk device.
- the present invention can be understood as being configured by a code representing the computer program or a storage medium storing the computer program.
- the function shown in each block in the transmission-side device and the reception-side device shown in FIGS. 1, 3, 5, and 7 is realized by a software program as an example executed by the CPU 305 shown in FIG. Explained.
- some or all of the functions shown in the blocks shown in FIGS. 1, 3, 5, and 7 may be realized as hardware circuits.
- (Appendix 1) Transmitting means for transmitting each of a plurality of measurement packets at a predetermined transmission interval, receiving means for receiving the plurality of measurement packets after passing a predetermined network a predetermined number of times, and receiving the measurement packets
- the accumulated queuing delay is calculated by using the reception time information indicating temporal information regarding the transmission time information and the transmission time information indicating temporal information regarding the transmission of the measurement packet.
- a communication system comprising: an available bandwidth estimation unit that estimates an available bandwidth of the network using a value.
- the communication system includes a transmission-side device and a reception-side device that are communicably connected to each other via the network, the transmission-side device includes the transmission unit, and the transmission unit includes the transmission unit A plurality of measurement packets and the transmission time information are transmitted, and the reception side device includes the reception unit and the available bandwidth estimation unit, and the reception unit transmits the plurality of transmission packets transmitted from the transmission side device.
- the measurement bandwidth and the transmission time information are received, and the available bandwidth estimation unit calculates a cumulative value of the queuing delay using the reception time information and the transmission time information received by the reception unit.
- the communication system according to appendix 1.
- the said transmission side apparatus is further provided with the packet generation means which produces
- the said transmission means is the said packet generation.
- the communication system includes a transmission side device and a reception side device that are communicably connected to each other via a network, and the transmission side device includes the transmission unit, the reception unit, and the available bandwidth.
- Estimating means the receiving side device comprises the transmitting / receiving means, the receiving means receives the plurality of measurement packets returned from the receiving side device, and the available bandwidth estimating means includes the reception time.
- the communication system according to appendix 4, wherein a cumulative value of queuing delay is calculated using the information and the transmission time information.
- the transmission time information includes information indicating a time when the measurement packet is transmitted, information indicating an actual transmission interval of the measurement packet, and a difference between the set transmission interval and the actual transmission interval.
- the communication system according to any one of appendices 1 to 6, wherein the communication system is at least one of the information shown.
- the transmission time information includes information indicating a time when the measurement packet is transmitted, information indicating an actual transmission interval of the measurement packet, and a difference between the set transmission interval and the actual transmission interval.
- a transmission-side apparatus that transmits data to a reception-side apparatus that is communicably connected via a network, and transmits each of a plurality of measurement packets to the reception-side apparatus at a predetermined transmission interval.
- a transmission unit a reception unit that receives the plurality of measurement packets returned from the reception side device; reception time information that indicates temporal information related to reception of the measurement packet; and temporal information related to transmission of the measurement packet.
- Characterized in that it comprises an available bandwidth estimation means for calculating a cumulative value of queuing delay using transmission time information indicating information, and estimating an available bandwidth using the calculated cumulative value of queuing delay.
- Sending device comprises an available bandwidth estimation means for calculating a cumulative value of queuing delay using transmission time information indicating information, and estimating an available bandwidth using the calculated cumulative value of queuing delay.
- the transmission time information includes information indicating a time when the measurement packet is transmitted, information indicating an actual transmission interval of the measurement packet, and a difference between the set transmission interval and the actual transmission interval.
- Each of the plurality of measurement packets is transmitted at a predetermined transmission interval, and after passing through a predetermined network a predetermined number of times, the plurality of measurement packets are received, and temporal information regarding reception of the measurement packet is obtained.
- the received reception time information and the transmission time information indicating temporal information related to the transmission of the measurement packet to calculate a cumulative value of the queuing delay, and using the calculated cumulative value of the queuing delay,
- a communication method characterized by estimating an available bandwidth of a network.
- the transmission time information includes information indicating a time when the measurement packet is transmitted, information indicating an actual transmission interval of the measurement packet, and a difference between the set transmission interval and the actual transmission interval.
- a method for estimating an available bandwidth of a receiving apparatus that receives data from a transmitting apparatus that is communicably connected via a network, and a plurality of measurement packets transmitted from the transmitting apparatus, and Accumulation of queuing delay by receiving transmission time information indicating temporal information related to transmission of the measurement packet and using reception time information indicating temporal information related to reception of the measurement packet and the transmission time information
- a method for estimating an available bandwidth comprising: calculating a value and estimating an available bandwidth using the calculated cumulative value of the queuing delay.
- a method for estimating an available bandwidth of a transmission side device that transmits data to a reception side device communicably connected via a network, wherein each of a plurality of measurement packets is received at a predetermined transmission interval.
- Reception time information indicating temporal information related to reception of the measurement packet, and temporal information related to transmission of the measurement packet, received from the plurality of measurement packets returned from the reception side device
- An accumulated bandwidth queuing delay value is calculated using the transmission time information indicating, and an available bandwidth is estimated using the calculated accumulated queuing delay value.
- Each of a plurality of measurement packets is transmitted to the receiving apparatus at a predetermined transmission interval to a computer including a transmitting apparatus that transmits data to a receiving apparatus that is communicably connected via a network. Processing, receiving the plurality of measurement packets returned from the receiving device, reception time information indicating temporal information related to reception of the measurement packets, and temporal information related to transmission of the measurement packets And a process of calculating an accumulated value of queuing delay using the transmission time information indicating, and estimating an available bandwidth using the calculated accumulated value of queuing delay.
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Abstract
Description
本発明の第1の実施の形態について、図面を参照して詳細に説明する。図1は、本実施の形態に係る通信システムの構成および当該通信システムに含まれる各装置の機能構成の一例を示す図である。図1に示す通り、通信システム10は、送信側装置100と、受信側装置200とを備えている。送信側装置100と、受信側装置200とは、ネットワーク300を介して互いに通信可能に接続されている。なお、図1に示す通信システム10は、一例であり、本実施の形態はこれに限定されるものではない。例えば、通信システム10は、送信側装置100および受信側装置200がそれぞれ複数含まれる構成であってもよいし、送信側装置100および受信側装置200以外の装置が含まれる構成であってもよい。
次に、送信側装置100の構成について説明する。図1に示す通り、送信側装置100は、送信部110を備えている。
次に、受信側装置200の構成について説明する。図1に示す通り、受信側装置200は、受信部210と、可用帯域推定部220とを備えている。
次に、図2を参照して、本実施の形態に係る通信システム10の動作について説明する。図2は、本実施の形態に係る通信システム10の処理の流れの一例を示すフローチャートである。
以上のように、本実施の形態に係る通信システム10は、ネットワーク300を介して互いに通信可能に接続された送信側装置100と受信側装置200とを備えている。
次に、本発明の第2の実施の形態について、図面を参照して説明する。なお、説明の便宜上、前述した第1の実施の形態で説明した図面に含まれる部材と同じ機能を有する部材については、同じ符号を付し、その説明を省略する。
次に、図4を参照して、本実施の形態に係る通信システム20の動作について説明する。図4は、本実施の形態に係る通信システム20の処理の流れの一例を示すフローチャートである。
本実施の形態に係る通信システム20によれば、上記第1の実施の形態に係る効果に加え、更に、送信側装置101と受信側装置200との間の通信回数を減らすことができる。
次に、本発明の第3の実施の形態について、図面を参照して説明する。なお、説明の便宜上、前述した第1および第2の実施の形態で説明した図面に含まれる部材と同じ機能を有する部材については、同じ符号を付し、その説明を省略する。
受信側装置202は、図5に示す通り、送受信部230を備えている。
送信側装置102は、図5に示す通り、送信部110と、受信部130と、記憶部140と、可用帯域推定部150とを備えている。
次に、図6を参照して、本実施の形態に係る通信システム30の動作について説明する。図6は、本実施の形態に係る通信システム30の処理の流れの一例を示すフローチャートである。
以上のように、本実施の形態に係る通信システム30は、ネットワーク300を介して互いに通信可能に接続された送信側装置102と受信側装置202とを備えている。
次に、本発明の第4の実施の形態について、図面を参照して説明する。本実施の形態では、本発明の課題を解決する最小の構成について説明を行う。図7は、本実施の形態に係る通信システム40の構成の一例を示す図である。
なお、図1、3、5、7に示した送信側装置および受信側装置の各部は、図8に例示するハードウェア資源で実現してもよい。すなわち、図8に示す構成は、RAM(Random Access Memory)301、ROM(Read Only Memory)302、通信インタフェース303、記憶媒体304およびCPU(Central Processing Unit)305を備える。CPU305は、ROM302または記憶媒体304に記憶された各種ソフトウェアプログラム(コンピュータプログラム)を、RAM301に読み出して実行することにより、送信側装置または受信側装置の全体的な動作を司る。すなわち、上記各実施形態において、CPU305は、ROM302または記憶媒体304を適宜参照しながら、送信側装置および受信側装置が備える各機能(各部)を実行するソフトウェアプログラムを実行する。
20 通信システム
30 通信システム
40 通信システム
100 送信側装置
101 送信側装置
102 送信側装置
110 送信部
120 パケット生成部
130 受信部
140 記憶部
150 可用帯域推定部
200 受信側装置
202 受信側装置
210 受信部
220 可用帯域推定部
230 送受信部
41 送信部
42 受信部
43 可用帯域推定部
Claims (11)
- 複数の計測パケットの夫々を所定の送信間隔で送信する送信手段と、
所定のネットワークを所定の回数通過した後に、前記複数の計測パケットを受信する受信手段と、
前記計測パケットの受信に関する時間的な情報を示す受信時間情報と、前記計測パケットの送信に関する時間的な情報を示す送信時間情報とを用いて、キューイング遅延の累積値を算出し、当該算出したキューイング遅延の累積値を用いて、前記ネットワークの可用帯域を推定する可用帯域推定手段と、を備えることを特徴とする通信システム。 - 前記通信システムは、前記ネットワークを介して互いに通信可能に接続された送信側装置と受信側装置とを備え、
前記送信側装置は、前記送信手段を備え、
前記送信手段は、前記複数の計測パケットと、前記送信時間情報とを送信し、
前記受信側装置は、前記受信手段と、前記可用帯域推定手段とを備え、
前記受信手段は、前記送信側装置から送信された前記複数の計測パケットと、前記送信時間情報とを受信し、
前記可用帯域推定手段は、前記受信時間情報と、前記受信手段が受信した前記送信時間情報とを用いて、キューイング遅延の累積値を算出する、ことを特徴とする請求項1に記載の通信システム。 - 前記送信側装置は、送信済みの計測パケットに対する前記送信時間情報と未送信の計測パケットとを組み合わせた計測パケットを生成するパケット生成手段を更に備え、
前記送信手段は、前記パケット生成手段が生成した計測パケットを送信する、ことを特徴とする請求項2に記載の通信システム。 - 前記所定の回数の各回の前記通過後、前記計測パケットを次回の前記通過のため、前記ネットワークに再入力する少なくとも1つの送受信手段を更に備えることを特徴とする請求項1に記載の通信システム。
- 前記通信システムは、ネットワークを介して互いに通信可能に接続された送信側装置と受信側装置とを備え、
前記送信側装置は、前記送信手段と、前記受信手段と、前記可用帯域推定手段とを備え、
前記受信側装置は、前記送受信手段を備え、
前記受信手段は、前記受信側装置から返送された前記複数の計測パケットを受信し、
前記可用帯域推定手段は、前記受信時間情報と、前記送信時間情報とを用いて、キューイング遅延の累積値を算出することを特徴とする請求項4に記載の通信システム。 - 前記送信側装置は、前記送信時間情報を格納するための記憶手段を更に備えることを特徴とする、請求項5に記載の通信システム。
- 前記送信時間情報は、前記計測パケットを送信した時刻を示す情報、前記計測パケットの実際の送信間隔を示す情報、および、設定された送信間隔と前記実際の送信間隔との差を示す情報、の少なくとも何れかである、ことを特徴とする請求項1から6の何れか1項に記載の通信システム。
- ネットワークを介して通信可能に接続された送信側装置からデータを受信する受信側装置であって、
前記送信側装置から送信された、複数の計測パケット、および、前記計測パケットの送信に関する時間的な情報を示す送信時間情報を受信する受信手段と、
前記計測パケットの受信に関する時間的な情報を示す受信時間情報と、前記受信手段が受信した前記送信時間情報とを用いて、キューイング遅延の累積値を算出し、当該算出したキューイング遅延の累積値を用いて可用帯域を推定する可用帯域推定手段と、を備えることを特徴とする受信側装置。 - 前記送信時間情報は、前記計測パケットを送信した時刻を示す情報、前記計測パケットの実際の送信間隔を示す情報、および、設定された送信間隔と前記実際の送信間隔との差を示す情報、の少なくとも何れかである、ことを特徴とする請求項8に記載の受信側装置。
- ネットワークを介して通信可能に接続された受信側装置に対してデータを送信する送信側装置であって、
複数の計測パケットの夫々を所定の送信間隔で前記受信側装置に送信する送信手段と、
前記受信側装置から返送された前記複数の計測パケットを受信する受信手段と、
前記計測パケットの受信に関する時間的な情報を示す受信時間情報と、前記計測パケットの送信に関する時間的な情報を示す送信時間情報とを用いて、キューイング遅延の累積値を算出し、当該算出したキューイング遅延の累積値を用いて可用帯域を推定する可用帯域推定手段と、を備えることを特徴とする送信側装置。 - 複数の計測パケットの夫々を所定の送信間隔で送信し、
所定のネットワークを所定の回数通過した後に、前記複数の計測パケットを受信し、
前記計測パケットの受信に関する時間的な情報を示す受信時間情報と、前記計測パケットの送信に関する時間的な情報を示す送信時間情報とを用いて、キューイング遅延の累積値を算出し、当該算出したキューイング遅延の累積値を用いて、前記ネットワークの可用帯域を推定する、ことを特徴とする通信方法。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017184213A (ja) * | 2016-03-31 | 2017-10-05 | Kddi株式会社 | 可用帯域測定システム、受信端末、可用帯域測定方法、及びコンピュータプログラム |
JP2018037782A (ja) * | 2016-08-30 | 2018-03-08 | ソフトバンク株式会社 | 通信網の可用帯域を推定するシステム及びその方法 |
CN111541583A (zh) * | 2020-04-20 | 2020-08-14 | 杭州迪普信息技术有限公司 | 一种分片报文缓存测试系统、方法及装置 |
WO2022070327A1 (ja) * | 2020-09-30 | 2022-04-07 | 日本電気株式会社 | 通信制御装置、通信制御システム、通信制御方法、及び、プログラムが格納された非一時的なコンピュータ可読媒体 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106330757B (zh) * | 2015-06-30 | 2020-04-21 | 腾讯科技(深圳)有限公司 | 流量控制方法及装置 |
IT201700091935A1 (it) * | 2017-08-08 | 2019-02-08 | Telecom Italia Spa | Misure di prestazioni in una rete di comunicazioni a commutazione di pacchetto |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013121029A (ja) * | 2011-12-07 | 2013-06-17 | Onkyo Corp | コンテンツ再生システム |
JP2013251828A (ja) * | 2012-06-04 | 2013-12-12 | Hitachi Ltd | 通信システム及び局側装置 |
WO2014017140A1 (ja) * | 2012-07-27 | 2014-01-30 | 日本電気株式会社 | 可用帯域推定システム、方法及びプログラム |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06508008A (ja) * | 1991-06-12 | 1994-09-08 | ヒューレット・パッカード・カンパニー | パケットベースネットワークをテストするための方法および装置 |
US6996132B1 (en) * | 2000-08-08 | 2006-02-07 | Verizon Laboratories Inc. | Method, apparatus and program for determining available bandwidth between multiple points in a communication system |
US6976087B1 (en) * | 2000-11-24 | 2005-12-13 | Redback Networks Inc. | Service provisioning methods and apparatus |
JP2004312725A (ja) | 2003-03-27 | 2004-11-04 | Docomo Communications Laboratories Usa Inc | サービスの品質を決定する方法および装置 |
US7558202B2 (en) * | 2006-03-16 | 2009-07-07 | Microsoft Corporation | Estimating available bandwidth with multiple overloading streams |
KR100817798B1 (ko) * | 2006-10-20 | 2008-03-31 | 한국정보보호진흥원 | 인터넷 제어 메시지 프로토콜의 타임스탬프 기능을 이용한네트워크 링크 가용 대역폭 추정 방법 |
JP5685913B2 (ja) | 2009-12-11 | 2015-03-18 | 日本電気株式会社 | ネットワーク帯域計測システム、ネットワーク帯域計測方法およびプログラム |
-
2015
- 2015-05-11 US US15/306,170 patent/US10298508B2/en not_active Expired - Fee Related
- 2015-05-11 WO PCT/JP2015/002375 patent/WO2015174069A1/ja active Application Filing
- 2015-05-11 JP JP2016519112A patent/JPWO2015174069A1/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013121029A (ja) * | 2011-12-07 | 2013-06-17 | Onkyo Corp | コンテンツ再生システム |
JP2013251828A (ja) * | 2012-06-04 | 2013-12-12 | Hitachi Ltd | 通信システム及び局側装置 |
WO2014017140A1 (ja) * | 2012-07-27 | 2014-01-30 | 日本電気株式会社 | 可用帯域推定システム、方法及びプログラム |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017184213A (ja) * | 2016-03-31 | 2017-10-05 | Kddi株式会社 | 可用帯域測定システム、受信端末、可用帯域測定方法、及びコンピュータプログラム |
JP2018037782A (ja) * | 2016-08-30 | 2018-03-08 | ソフトバンク株式会社 | 通信網の可用帯域を推定するシステム及びその方法 |
CN111541583A (zh) * | 2020-04-20 | 2020-08-14 | 杭州迪普信息技术有限公司 | 一种分片报文缓存测试系统、方法及装置 |
WO2022070327A1 (ja) * | 2020-09-30 | 2022-04-07 | 日本電気株式会社 | 通信制御装置、通信制御システム、通信制御方法、及び、プログラムが格納された非一時的なコンピュータ可読媒体 |
JP7487789B2 (ja) | 2020-09-30 | 2024-05-21 | 日本電気株式会社 | 通信制御装置、通信制御システム、通信制御方法、及び、通信制御プログラム |
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