WO2018168701A1 - Communication device, communication system, and communication method - Google Patents

Communication device, communication system, and communication method Download PDF

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Publication number
WO2018168701A1
WO2018168701A1 PCT/JP2018/009253 JP2018009253W WO2018168701A1 WO 2018168701 A1 WO2018168701 A1 WO 2018168701A1 JP 2018009253 W JP2018009253 W JP 2018009253W WO 2018168701 A1 WO2018168701 A1 WO 2018168701A1
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communication
data
unit
divided
information
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PCT/JP2018/009253
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French (fr)
Japanese (ja)
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悟史 園部
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日本電気株式会社
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass

Definitions

  • the present invention relates to a communication device, a communication system, and a communication method for transmitting and receiving data.
  • Patent Document 1 is a system in which a transmission side transmits divided transmission data in parallel via a plurality of wireless channels, and the reception side assembles transmission data received into one data.
  • a system is described in which communication is performed using the remaining radio channel when interference with another system occurs in any of the radio channels.
  • Patent Document 2 discloses a system for performing link training for transmitting / receiving a predetermined packet via each of a plurality of parallel wireless channels, and establishing a link via a wireless channel in which the number of generated errors is less than a threshold value Is described.
  • an object of the present invention is to provide a communication device, a communication system, and a communication method that can appropriately cope with a change in communication status.
  • a communication apparatus includes: a dividing unit that divides one data; and a transmitting unit that transmits a divided packet including the data divided by the dividing unit using any of a plurality of wireless communication lines.
  • the transmission means transmits the fragmented packet using a wireless communication line selected based on communication quality information indicating the communication status of each of the plurality of wireless communication lines.
  • a communication system includes a communication apparatus according to any one of the aspects, a reception unit that receives the divided packet transmitted by the transmission unit via the plurality of wireless communication lines, and a packet that is received by the reception unit.
  • a receiving-side communication device is provided that includes information generation means for generating the communication quality information based on reception.
  • the communication method includes a dividing step of dividing one data, and a transmitting step of transmitting a divided packet including the data divided in the dividing step using any of a plurality of wireless communication lines, In the transmitting step, the divided packet is transmitted using a wireless communication line selected based on communication quality information indicating a communication status of each of the plurality of wireless communication lines.
  • FIG. 1 is a block diagram illustrating a configuration example of a communication system 300 according to the first embodiment.
  • a communication system 300 includes a data transmission source communication device 100 and a data transmission destination communication device 200.
  • FIG. 1 shows a partial configuration of the data transmission source communication device 100 and a partial configuration of the data transmission destination communication device 200.
  • the data transmission source communication device 100 and the data transmission destination communication device 200 are arranged so as to be connectable by a plurality of parallel wireless communication lines. Then, the data input to the data transmission source communication device 100 is transmitted to the data transmission destination communication device 200 via the wireless communication line and output.
  • FIG. 2 is a block diagram illustrating a configuration example of the data transmission source communication device 100 according to the first embodiment.
  • the data transmission source communication apparatus 100 includes an input / output port 110, a buffer 120, a data dividing unit 130, transmission units 140-1 to 140-n, a receiving unit 150, a transmission control unit 160, and a division control unit 170.
  • the transmission units 140-1 to 140-n may be collectively referred to as the transmission unit 140.
  • the data to be transmitted to the data transmission destination communication device 200 is input to the input / output port 110.
  • the buffer 120 stores data input to the input / output port 110.
  • the data dividing unit 130 reads the data stored in the buffer 120 and divides the data in accordance with an instruction from the division control unit 170 to generate divided data that is data after division. Then, the data dividing unit 130 inputs the generated divided data to the transmitting unit 140.
  • the dividing means is realized by the data dividing unit 130, for example.
  • the transmission units 140-1 to 140-n are prepared so as to correspond to the wireless communication lines with the data transmission destination communication device 200, respectively. Further, the transmission units 140-1 to 140-n generate a divided packet including header information, division control information, and the divided data input by the data dividing unit 130. Transmitters 140-1 to 140-n transmit the generated divided packets using an adaptive modulation scheme in accordance with the corresponding wireless communication line.
  • the transmission unit is realized by the transmission unit 140, for example.
  • the header information is shaded in FIG. Further, the division control information is shown by a diagonally downward slanting line in FIG. Then, the divided data is indicated by a left-downward oblique line in FIG.
  • the division control information is information indicating which of the plurality of wireless communication lines is used by the transmission units 140-1 to 140-n.
  • the header information is information including modulation scheme information and division information.
  • the modulation scheme information is information indicating a modulation scheme applied to the divided packet transmitted by the transmission unit 140.
  • the division information is information necessary for the data transmission destination communication apparatus 200 to combine the divided data included in each divided packet.
  • the receiving unit 150 receives information transmitted by the data transmission destination communication device 200. Specifically, the receiving unit 150 receives, for example, request modulation method information and communication quality information transmitted by the data transmission destination communication device 200. Then, the receiving unit 150 inputs the requested modulation method information to the transmission control unit 160. Further, the receiving unit 150 inputs communication quality information to the division control unit 170. The requested modulation method information and communication quality information will be described later.
  • the transmission control unit 160 inputs modulation scheme instruction information indicating a modulation scheme to the transmission unit 140 based on the requested modulation scheme information input by the reception unit 150.
  • the division control unit 170 determines the transmission mode of the divided packet based on the communication quality information input by the reception unit 150. Then, the division control unit 170 generates transmission mode information indicating the determined transmission mode of the divided packet. The division control unit 170 inputs the generated transmission mode information to the data division unit 130 and the transmission unit 140.
  • the transmission mode information is information indicating a wireless communication line used for transmitting the divided packet, and details will be described later.
  • FIG. 3 is a block diagram illustrating a configuration example of the data transmission destination communication device 200 according to the first embodiment.
  • the data transmission destination communication device 200 includes an input / output port 210, a data combination unit 230, reception units 240-1 to 240-n, a transmission unit 250, a reception information generation unit 260, and a combination control unit 270.
  • the receiving units 240-1 to 240-n may be collectively referred to as the receiving unit 240.
  • the receiving means is realized by the receiving unit 240, for example.
  • the information generation unit is realized by the reception information generation unit 260, for example.
  • the reception unit 240 receives the divided packet transmitted by the transmission unit 140 of the data transmission source communication device 100. Then, the reception unit 240 inputs the division control information included in the received divided packet to the combination control unit 270. The receiving unit 240 inputs the header information and the divided data included in the divided packet to the data combining unit 230. Further, the reception unit 240 inputs a reception signal corresponding to the received divided packet to the reception information generation unit 260. Receiving units 240-1 to 240-n are prepared so as to correspond to wireless communication lines with data transmission source communication device 100, respectively.
  • the combination control unit 270 instructs the data combining unit 230 to combine divided data based on the division control information input by the receiving unit 240.
  • the data combining unit 230 combines the divided data input by the receiving unit 240 in accordance with an instruction from the combining control unit 270. Then, the data combining unit 230 inputs the combined data to the input / output port 210.
  • the input / output port 210 outputs the data input by the data combining unit 230.
  • the reception information generation unit 260 generates request modulation method information and communication quality information based on the reception signal input by the reception unit 240. Then, reception information generation section 260 inputs the generated required modulation scheme information and communication quality information to transmission section 250.
  • the transmission unit 250 transmits the request modulation method information and communication quality information input by the reception information generation unit 260.
  • the requested modulation method information is information indicating a modulation method that is required to be adopted when the data transmission destination communication device 200 transmits a divided packet to the data transmission source communication device 100.
  • the reception information generation unit 260 of the data transmission destination communication apparatus 200 generates request modulation method information indicating the modulation method of the transmitted divided packet according to the received signal.
  • the reception information generation unit 260 measures a CNR (Carrier to Noise Ratio) in the reception signal, and generates request modulation method information indicating a multi-value modulation method according to the value of the measurement result. .
  • CNR Carrier to Noise Ratio
  • the reception information generation unit 260 generates request modulation method information indicating a modulation method in which the value of the multi-value number is larger as the CNR value that is the value of the measurement result is larger. Also, the reception information generation unit 260 generates request modulation scheme information indicating a modulation scheme in which the value of the multi-value number is smaller as the CNR value that is the value of the measurement result is smaller.
  • the transmission unit 140 to which the modulation scheme instruction information based on the request modulation scheme information generated and transmitted is input modulates and transmits the divided packet with the modulation scheme indicated by the modulation scheme instruction information.
  • Such a configuration makes it possible to transmit a divided packet at a higher speed when the communication condition is good. Further, when the communication status is poor, the divided packet can be transmitted more reliably.
  • the modulation scheme instruction information is information indicating a modulation scheme (modulation scheme) applied to the divided packet transmitted by the transmission unit 140.
  • the transmission control unit 160 generates modulation scheme instruction information indicating the modulation scheme indicated by the required modulation scheme information.
  • the communication quality information is information indicating the quality of the received signal based on the divided packet transmitted from the data transmission source communication device 100 by the reception unit 240 of the data transmission destination communication device 200.
  • the divided packet is transmitted by each of the transmission units 140-1 to 140-n and received by the reception units 240-1 to 240-n via the wireless communication lines corresponding to each of the transmission units 140-1 to 140-n.
  • the communication quality information indicates the communication status of each wireless communication line corresponding to each of the transmitting units 140-1 to 140-n and the receiving units 240-1 to 240-n.
  • the communication quality information is, for example, information indicating each CNR value of a received signal transmitted / received via each wireless communication line.
  • generated and transmitted was input determines the transmission aspect of a division
  • the transmission mode information is information indicating the transmission mode determined by the division control unit 170 based on the communication quality information. Specifically, the division control unit 170 selects a wireless communication line with good communication status, determines to transmit a divided packet via the selected wireless communication line, and selects the selected wireless communication according to the determination result. Transmission mode information indicating a line is generated. Note that the transmission mode information may be information indicating the transmission unit 140 corresponding to the selected wireless communication line.
  • the division control unit 170 inputs the transmission mode information to the data division unit 130 and the transmission unit 140.
  • the data division unit 130 divides the data read from the buffer 120 according to the transmission mode information, and generates a divided packet.
  • Data divider 130 divides data according to the number of wireless communication lines indicated by the transmission mode information. Specifically, for example, when three wireless communication lines are indicated by the transmission mode information, the data is divided into three to generate three divided data.
  • the division control unit 170 transmits the generated divided data according to the transmission mode information (more specifically, for example, according to the wireless communication line indicated by the transmission mode information) (for example, the transmission unit 140- Enter 1 to 3).
  • the divided data is included in the divided packet and transmitted by the transmission unit 140 corresponding to the transmission mode information.
  • Such a configuration makes it possible to transmit and receive divided packets via a wireless communication line with good communication conditions.
  • the transmission units 140-1 to 140-n and the reception unit 150 are realized by a communication module, for example.
  • the data dividing unit 130, the transmission control unit 160, and the division control unit 170 are realized by, for example, a CPU (Central Processing Unit) and a plurality of circuits.
  • the buffer 120 is realized by storage means such as a memory, for example.
  • the input / output port 110 is realized by an input / output interface, for example.
  • the receiving units 240-1 to 240-n and the transmitting unit 250 are realized by a communication module, for example.
  • the data combination unit 230, the reception information generation unit 260, and the combination control unit 270 are realized by, for example, a CPU or a plurality of circuits.
  • the buffer 120 is realized by storage means such as a memory, for example.
  • the input / output port 210 is realized by, for example, an input / output interface.
  • the communication line selection means is realized by the division control unit 170, for example.
  • FIG. 4 is a flowchart showing the operation of the data transmission source communication device 100.
  • the data dividing unit 130 reads the data input to the input / output port 110 and stored in the buffer 120 (step S101).
  • the data dividing unit 130 divides the data read out in the process of step S101 based on the transmission mode information input by the division control unit 170 (step S102).
  • the data division unit 130 inputs the divided data, the division information, and the division control information, which are data after division, to the transmission unit 140 corresponding to the wireless communication line indicated by the transmission mode information.
  • the data dividing unit 130 inputs the divided data, the division information, and the division control information to the transmission units 140-1 to 140-3 in the process of step S102.
  • the transmitting units 140-1 to 140-3 generate a divided packet including the modulation scheme information and the divided data, the divided information, and the divided control information input by the data dividing unit 130 (step S103).
  • the modulation scheme information is information indicating the modulation scheme indicated by the modulation scheme instruction information.
  • header information is comprised by modulation system information and division
  • the transmission units 140-1 to 140-3 perform modulation processing on the divided packets using the modulation scheme indicated by the modulation scheme instruction information (step S104).
  • the transmission units 140-1 to 140-3 transmit the divided packets subjected to the modulation process in the process of step S104 (step S105).
  • the receiving unit 150 receives the request modulation method information and the communication quality information corresponding to the divided packet transmitted by the transmitting units 140-1 to 140-3 in the process of step S105 (step S106).
  • the receiving unit 150 inputs the request modulation method information received in the process of step S106 to the transmission control unit 160 (step S107). Then, the transmission control unit 160 generates modulation scheme instruction information indicating the modulation scheme indicated by the required modulation scheme information. Then, the transmission control unit 160 inputs the generated modulation scheme instruction information to the transmission unit 140 (step S108).
  • the receiving unit 150 inputs communication quality information to the division control unit 170 (step S109). And the division
  • the communication quality information is information indicating a CNR value.
  • a threshold for comparison with a value indicated by the communication quality information is stored in the storage unit (not shown, which may be the buffer 120) of the data transmission source communication device 100.
  • the threshold value is set according to the CNR value at which no error occurs or the BER value is equal to or lower than a predetermined value in transmission / reception of the divided packet between the data transmission source communication device 100 and the data transmission destination communication device 200.
  • the threshold value is, for example, the CNR value or a value obtained by adding a predetermined value to the CNR value.
  • the threshold value may be a sum value obtained by adding a predetermined value to a CNR value at which no line disconnection occurs between the data transmission source communication device 100 and the data transmission destination communication device 200.
  • step S110 the division control unit 170 compares the threshold value with each value corresponding to each wireless communication line indicated by the communication quality information. Then, the data dividing unit 130 selects a wireless communication line corresponding to a value equal to or greater than the threshold value, determines to transmit a divided packet via the selected wireless communication line, and selects the selected wireless communication line according to the determination result. Is generated.
  • the division control unit 170 determines not to transmit the divided packet via the wireless communication line corresponding to the value less than the threshold in the process of step S110. Then, the division control unit 170 inputs the transmission mode information generated according to the determination result in the process of step S110 to the data division unit 130 and the transmission unit 140 (step S111).
  • steps S107 and S108 and the processing of steps S109 to S111 may be performed simultaneously, or steps S109 to S111 may be performed prior to the processing of steps S107 and S108.
  • FIG. 5 is a flowchart showing the operation of the data transmission destination communication device 200.
  • the reception unit 240 receives the divided packet transmitted by the transmission unit 140 of the data transmission source communication device 100 (step S201).
  • the receiving units 240-1 to 240-3 receive the divided packets transmitted by the transmitting units 140-1 to 140-3 of the data transmission source communication device 100 in the process of step S201.
  • the reception unit 240 inputs the division control information included in the received divided packet to the combination control unit 270.
  • the receiving unit 240 inputs the header information and the divided data included in the divided packet to the data combining unit 230. Furthermore, the reception unit 240 inputs the received signal of the divided packet to the reception information generation unit 260.
  • the combination control unit 270 instructs the data combining unit 230 to combine the divided data based on the division control information input by the receiving unit 240 (step S202).
  • the division control information indicates that a wireless communication line corresponding to the receiving units 240-1 to 240-3 is used. Therefore, the combining control unit 270 instructs the data combining unit 230 to combine the divided data included in the divided packets received by the receiving units 240-1 to 240-3.
  • the data combining unit 230 combines the divided data with each other based on the division information of the header information included in the divided packet in accordance with the instruction from the combination control unit 270 (step S203). Then, the data combining unit 230 inputs the combined data to the input / output port 210.
  • the input / output port 210 outputs the combined data input by the data combining unit 230 (step S204).
  • the reception information generation unit 260 generates request modulation method information and communication quality information based on the reception signal input by the reception unit 240 (step S205). Then, reception information generation section 260 inputs the generated required modulation scheme information and communication quality information to transmission section 250.
  • the transmission unit 250 transmits the request modulation method information and the communication quality information input by the reception information generation unit 260 (step S206).
  • steps S202 to S204 may be performed simultaneously with the processing of steps S205 and 206, or the processing of steps S205 and 206 may be performed prior to the processing of steps S202 to S204.
  • the transmission unit 140 of the data transmission source communication device 100 transmits a divided packet including divided data that is divided data.
  • the receiving unit 240 of the data transmission destination communication apparatus 200 receives the divided packet transmitted by the transmitting unit 140.
  • the data combining unit 230 combines the divided data with each other.
  • the reception information generating unit 260 generates request modulation method information and communication quality information.
  • the transmission unit 250 transmits the request modulation method information and the communication quality information generated by the reception information generation unit 260.
  • the data dividing unit 130 divides the data according to the determination result by the division control unit 170, and generates divided data included in the divided packet to be transmitted this time.
  • the transmission unit 140 corresponding to the wireless communication line used for transmission of the current divided packet transmits the divided packet to be transmitted this time based on the transmitted request modulation method information, that is, according to the transmission result of the previous divided packet. Is generated, modulated, and transmitted.
  • a wireless communication line with a good communication state is used and a wireless communication line with a bad communication state is not used according to the situation where the previously transmitted divided packet is received. . Therefore, it is possible to prevent the occurrence of the problem that the divided packet transmitted this time is not properly received by the data transmission destination communication device 200 due to the poor communication state of the wireless communication line.
  • the data transmission destination communication device 200 If one of the plurality of divided packets based on one data is not properly received by the data transmission destination communication device 200, the data transmission destination communication device 200 combines the remaining divided packets with each other. However, it cannot be restored to the one data. Therefore, the data transmission destination communication device 200 discards the remaining divided packets, requests the data transmission source communication device 100 to retransmit, receives and combines the retransmitted divided packets, and restores the one data. It will be. Therefore, when the problem occurs, all the divided packets based on one data, including the divided packet that was appropriately transmitted and received last time, must be retransmitted.
  • the reception information generation unit 260 generates request modulation method information and communication quality information based on the transmission / reception result of the control signal, and executes the processes after step S205. According to such a configuration, when the communication state deteriorates and is not selected by the division control unit 170 and the communication state of the wireless communication line that has not been used for transmission of the divided packet by the transmission unit 140 is improved, the wireless Transmission / reception of divided packets using the communication line can be resumed.
  • the division control unit 170 since the division control unit 170 performs a simple process in which the determination of the transmission mode of the divided packet is based only on the value of the CNR, the process is quickly performed and the wireless communication line to be used is determined. You can switch quickly.
  • the determination of the transmission mode of the divided packet performed by the division control unit 170 is not limited to only based on the CNR value, but the BER (Bit Error Rate) value, the SNR (Signal to Noise Ratio) value, and the reception This may be performed based on the value of the reception level of the divided packet received by unit 240.
  • FIG. 6 is a block diagram illustrating a configuration example of the data transmission source communication apparatus 102 according to the second embodiment.
  • FIG. 7 is a block diagram illustrating a configuration example of the data transmission destination communication device 202 according to the second embodiment.
  • the division control unit 170 of the data transmission source communication device 100 is configured to determine the transmission mode of the divided packet based on the communication quality information input by the reception unit 150.
  • the reception information generation unit 262 of the data transmission destination communication apparatus 202 determines the transmission mode of the divided packets. Then, transmission mode information indicating the transmission mode of the determination result is transmitted to the data transmission source communication apparatus 102.
  • the communication line selection means is realized by, for example, the reception information generation unit 262.
  • FIG. 8 is a flowchart showing the operation of the data transmission source communication apparatus 102 of the second embodiment.
  • the data dividing unit 130 reads the data input to the input / output port 110 and stored in the buffer 120 (step S301).
  • the data dividing unit 130 divides the data read out in step S301 based on the transmission mode information input by the division control unit 172 (step S302). Then, the data dividing unit 130 inputs the divided data that is the data after the division, the division information, and the division control information to the transmission unit 140 according to the transmission mode information. In this example, it is assumed that the data division unit 130 has input the divided data, the division information, and the division control information to the transmission units 140-1 to 140-3 in the process of step S302.
  • the transmitting units 140-1 to 140-3 generate a divided packet including the modulation scheme information and the divided data, the divided information, and the divided control information input by the data dividing unit 130 (step S303).
  • the transmission units 140-1 to 140-3 perform modulation processing on the divided packets using the modulation scheme indicated by the modulation scheme instruction information (step S304).
  • the transmission units 140-1 to 140-3 transmit the divided packets subjected to the modulation process in the process of step S304 (step S305).
  • the receiving unit 150 receives the request modulation method information and the transmission mode information corresponding to the divided packet transmitted by the transmitting units 140-1 to 140-3 in the process of step S305 (step S306).
  • the receiving unit 150 inputs the request modulation method information received in the process of step S306 to the transmission control unit 160 (step S307). Then, the transmission control unit 160 generates modulation scheme instruction information indicating the modulation scheme indicated by the required modulation scheme information. The transmission control unit 160 inputs the generated modulation scheme instruction information to the transmission unit 140 (step S308).
  • the receiving unit 150 inputs transmission mode information to the division control unit 172 (step S309). Then, the division control unit 172 inputs the transmission mode information input by the reception unit 150 to the data division unit 130 and the transmission unit 140 (step S310).
  • FIG. 9 is a flowchart illustrating the operation of the data transmission destination communication apparatus 202 according to the second embodiment.
  • the reception unit 240 receives the divided packet transmitted by the transmission unit 140 of the data transmission source communication device 102 (step S401).
  • the receiving units 240-1 to 240-3 receive the divided packets transmitted by the transmitting units 140-1 to 140-3 of the data transmission source communication apparatus 102 in the process of step S401.
  • the reception unit 240 inputs the division control information included in the received divided packet to the combination control unit 270.
  • the receiving unit 240 inputs the header information and the divided data included in the divided packet to the data combining unit 230. Further, the receiving unit 240 inputs the received signal of the divided packet to the reception information generating unit 262.
  • the combination control unit 270 instructs the data combining unit 230 to combine the divided data based on the division control information input by the receiving unit 240 (step S402).
  • the division control information indicates that a wireless communication line corresponding to the receiving units 240-1 to 240-3 is used. Therefore, the combining control unit 270 instructs the data combining unit 230 to combine the divided data included in the divided packets received by the receiving units 240-1 to 240-3.
  • the data combining unit 230 combines the divided data with each other based on the division information of the header information included in the divided packet in accordance with the instruction from the combination control unit 270 (step S403). Then, the data combining unit 230 inputs the combined data to the input / output port 210.
  • the input / output port 210 outputs the data input by the data combining unit 230 (step S404).
  • the reception information generation unit 262 generates request modulation method information and transmission mode information based on the reception signal input by the reception unit 240 (step S405). Note that the transmission mode information generation processing performed by the reception information generation unit 262 in step S405 is the same as the processing performed by the division control unit 170 in the first embodiment, for example. Then, the reception information generation unit 260 inputs the generated request modulation method information and transmission mode information to the transmission unit 250.
  • the transmission unit 250 transmits the request modulation method information and the transmission mode information input by the reception information generation unit 262 (step S406).
  • the same effect as that of the first embodiment can be obtained.
  • the reception information generation unit 262 of the data transmission destination communication device 202 since the reception information generation unit 262 of the data transmission destination communication device 202 generates transmission mode information, the processing load on the data transmission source communication device 102 can be reduced.
  • the divided packet is transmitted from the data transmission source communication device to the data transmission destination communication device.
  • the divided packet may be configured to be transmitted from the data transmission destination communication device to the data transmission source communication device. That is, two-way communication may be performed between the data transmission source communication device and the data transmission destination communication device.
  • the data transmission source communication device and the data transmission destination communication device include the components of the data transmission source communication devices 100 and 102 and the components of the data transmission destination communication devices 200 and 202, respectively. .
  • FIG. 10 is a block diagram illustrating a configuration example of the communication device 10 according to the third embodiment.
  • the communication device 10 according to the third embodiment includes a dividing unit 13 and a transmitting unit 14.
  • the communication device 10 corresponds to the data transmission source communication device 100 in the first embodiment shown in FIGS. 1 and 2 or the data transmission source communication device 102 in the second embodiment shown in FIG.
  • the dividing unit 13 corresponds to the data dividing unit 130 in the first and second embodiments shown in FIGS.
  • the transmission unit 14 corresponds to the transmission unit 140 in the first and second embodiments illustrated in FIGS.
  • the dividing unit 13 divides one data.
  • the transmitting unit 14 transmits a divided packet including the data divided by the dividing unit 13 using any of a plurality of wireless communication lines.
  • the transmission part 14 transmits a division
  • the transmission unit 14 transmits the divided packet using the wireless communication line selected according to each communication state. Therefore, a wireless communication line with a good communication state is used, and a wireless communication line with a bad communication state is not used. Therefore, it is possible to prevent the occurrence of the problem that the divided packet transmitted this time is not properly received by the transmission destination communication device due to the poor communication state of the wireless communication line.

Abstract

[Problem] To provide a communication device, communication system, and communication method that can appropriately handle changes in communication conditions. [Solution] A communication device 10 includes a division unit 13 and a transmission unit 14. The division unit 13 divides one piece of data. The transmission unit 14 transmits divided packets including the data divided by the division unit 13, such transmission carried out using any one of a plurality of wireless communication lines. The transmission unit 14 transmits the divided packets using the wireless communication line selected on the basis of communication quality information indicating communication conditions of each of the plurality of wireless communication lines.

Description

通信装置、通信システム、および通信方法COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
　本発明は、データを送受信する通信装置、通信システム、および通信方法に関する。 The present invention relates to a communication device, a communication system, and a communication method for transmitting and receiving data.
　入力されたデータが分割され、分割されたデータがパケット化された分割パケットを複数の無線通信回線のいずれかを介して送受信する無線通信システムがある。 There is a wireless communication system in which input data is divided and a divided packet in which the divided data is packetized is transmitted / received via any one of a plurality of wireless communication lines.
　そのような無線通信システムでは、複数の無線通信回線のうち、一部の無線通信回線の通信状況が悪化して、当該一部の無線通信回線を介した通信が不可能になった場合であっても、残部の無線通信回線を介した通信を選択することによって分割パケットの送受信が可能になる。 In such a wireless communication system, the communication status of some wireless communication lines among a plurality of wireless communication lines deteriorates, and communication via the some wireless communication lines becomes impossible. However, it is possible to transmit and receive the divided packets by selecting communication via the remaining wireless communication line.
　特許文献１には、送信側が、データを分割した分割後の送信用データを複数の無線チャネルを介して並列的に送信し、受信側が受信した送信用データを１つのデータに組み立てるシステムであって、いずれかの無線チャネルにおいて他システムとの干渉が生じた場合に、残部の無線チャネルを用いて通信するシステムが記載されている。 Patent Document 1 is a system in which a transmission side transmits divided transmission data in parallel via a plurality of wireless channels, and the reception side assembles transmission data received into one data. A system is described in which communication is performed using the remaining radio channel when interference with another system occurs in any of the radio channels.
　特許文献２には、互いに並列な複数の無線チャネルのそれぞれを介して所定のパケットを送受信するリンクトレーニングを行い、生じたエラーの数が閾値未満であった無線チャネルを介したリンクを確立するシステムが記載されている。 Patent Document 2 discloses a system for performing link training for transmitting / receiving a predetermined packet via each of a plurality of parallel wireless channels, and establishing a link via a wireless channel in which the number of generated errors is less than a threshold value Is described.
特開２０１２－２９２５３号公報JP 2012-29253 A 特開２０１０－１８３１３４号公報JP 2010-183134 A
　しかし、特許文献１に記載されているシステムのように、他システムによって放射された電波の検出結果に基づいて使用する無線チャネルを選択するように構成された場合に、自システムにおける実際の通信状況に関わらず無線チャネルが選択されてしまい、使用する無線チャネルを適切に選択することができない。 However, when configured to select a wireless channel to be used based on the detection result of radio waves radiated by another system, as in the system described in Patent Document 1, the actual communication status in the own system Regardless, the radio channel is selected, and the radio channel to be used cannot be appropriately selected.
　また、特許文献２に記載されたシステムでは、運用開始前の通信状況に応じて無線チャネルを選択するので、運用中における通信状況の変化に対応することができない。 Further, in the system described in Patent Document 2, since a radio channel is selected according to the communication status before the start of operation, it is not possible to cope with changes in the communication status during operation.
　そこで、本発明は、通信状況の変化に適切に対応可能な通信装置、通信システム、および通信方法を提供することを目的とする。 Therefore, an object of the present invention is to provide a communication device, a communication system, and a communication method that can appropriately cope with a change in communication status.
　本発明による通信装置は、一のデータを分割する分割手段と、前記分割手段によって分割されたデータを含む分割パケットを複数の無線通信回線のいずれかを用いて送信する送信手段とを備え、前記送信手段は、前記複数の無線通信回線のそれぞれの通信状況を示す通信品質情報に基づいて選択された無線通信回線を用いて前記分割パケットを送信することを特徴とする。 A communication apparatus according to the present invention includes: a dividing unit that divides one data; and a transmitting unit that transmits a divided packet including the data divided by the dividing unit using any of a plurality of wireless communication lines. The transmission means transmits the fragmented packet using a wireless communication line selected based on communication quality information indicating the communication status of each of the plurality of wireless communication lines.
　本発明による通信システムは、いずれかの態様の通信装置、および、前記送信手段が送信した前記分割パケットを前記複数の無線通信回線を介して受信する受信手段と、前記受信手段による前記分割パケットの受信に基づいて、前記通信品質情報を生成する情報生成手段とを含む受信側通信装置を備えたことを特徴とする。 A communication system according to the present invention includes a communication apparatus according to any one of the aspects, a reception unit that receives the divided packet transmitted by the transmission unit via the plurality of wireless communication lines, and a packet that is received by the reception unit. A receiving-side communication device is provided that includes information generation means for generating the communication quality information based on reception.
　本発明による通信方法は、一のデータを分割する分割ステップと、前記分割ステップで分割されたデータを含む分割パケットを複数の無線通信回線のいずれかを用いて送信する送信ステップとを含み、前記送信ステップで、前記複数の無線通信回線のそれぞれの通信状況を示す通信品質情報に基づいて選択された無線通信回線を用いて前記分割パケットを送信することを特徴とする。 The communication method according to the present invention includes a dividing step of dividing one data, and a transmitting step of transmitting a divided packet including the data divided in the dividing step using any of a plurality of wireless communication lines, In the transmitting step, the divided packet is transmitted using a wireless communication line selected based on communication quality information indicating a communication status of each of the plurality of wireless communication lines.
　本発明によれば、通信状況の変化に適切に対応することができる。 According to the present invention, it is possible to appropriately cope with a change in communication status.
第１の実施形態の通信システムの構成例を示すブロック図である。It is a block diagram which shows the structural example of the communication system of 1st Embodiment. 第１の実施形態のデータ伝送元通信装置の構成例を示すブロック図である。It is a block diagram which shows the structural example of the data transmission origin communication apparatus of 1st Embodiment. 第１の実施形態のデータ伝送先通信装置の構成例を示すブロック図である。It is a block diagram which shows the structural example of the data transmission destination communication apparatus of 1st Embodiment. 第１の実施形態のデータ伝送元通信装置の動作を示すフローチャートである。It is a flowchart which shows operation | movement of the data transmission origin communication apparatus of 1st Embodiment. 第１の実施形態のデータ伝送先通信装置の動作を示すフローチャートである。It is a flowchart which shows operation | movement of the data transmission destination communication apparatus of 1st Embodiment. 第２の実施形態のデータ伝送元通信装置の構成例を示すブロック図である。It is a block diagram which shows the structural example of the data transmission origin communication apparatus of 2nd Embodiment. 第２の実施形態のデータ伝送先通信装置の構成例を示すブロック図である。It is a block diagram which shows the structural example of the data transmission destination communication apparatus of 2nd Embodiment. 第２の実施形態のデータ伝送元通信装置の動作を示すフローチャートである。It is a flowchart which shows operation | movement of the data transmission origin communication apparatus of 2nd Embodiment. 第２の実施形態のデータ伝送先通信装置の動作を示すフローチャートである。It is a flowchart which shows operation | movement of the data transmission destination communication apparatus of 2nd Embodiment. 第３の実施形態の通信装置の構成例を示すブロック図である。It is a block diagram which shows the structural example of the communication apparatus of 3rd Embodiment.
　実施形態１．
　第１の実施形態について、図面を参照して説明する。図１は、第１の実施形態の通信システム３００の構成例を示すブロック図である。 Embodiment 1. FIG.
A first embodiment will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration example of a communication system 300 according to the first embodiment.
　図１に示すように、第１の実施形態の通信システム３００は、データ伝送元通信装置１００とデータ伝送先通信装置２００とを含む。なお、図１には、データ伝送元通信装置１００における一部の構成とデータ伝送先通信装置２００における一部の構成とが示されている。 As shown in FIG. 1, a communication system 300 according to the first embodiment includes a data transmission source communication device 100 and a data transmission destination communication device 200. FIG. 1 shows a partial configuration of the data transmission source communication device 100 and a partial configuration of the data transmission destination communication device 200.
　データ伝送元通信装置１００とデータ伝送先通信装置２００とは、互いに並列な複数の無線通信回線によって接続可能であるように配置されている。そして、データ伝送元通信装置１００に入力されたデータは、当該無線通信回線を介してデータ伝送先通信装置２００に伝送されて、出力される。 The data transmission source communication device 100 and the data transmission destination communication device 200 are arranged so as to be connectable by a plurality of parallel wireless communication lines. Then, the data input to the data transmission source communication device 100 is transmitted to the data transmission destination communication device 200 via the wireless communication line and output.
　データ伝送元通信装置１００の構成について、図面を参照して説明する。図２は、第１の実施形態のデータ伝送元通信装置１００の構成例を示すブロック図である。図２に示すように、データ伝送元通信装置１００は、入出力ポート１１０、バッファ１２０、データ分割部１３０、送信部１４０－１～ｎ、受信部１５０、送信制御部１６０、および分割制御部１７０を含む。なお、送信部１４０－１～ｎを送信部１４０と総称することがある。 The configuration of the data transmission source communication device 100 will be described with reference to the drawings. FIG. 2 is a block diagram illustrating a configuration example of the data transmission source communication device 100 according to the first embodiment. As shown in FIG. 2, the data transmission source communication apparatus 100 includes an input / output port 110, a buffer 120, a data dividing unit 130, transmission units 140-1 to 140-n, a receiving unit 150, a transmission control unit 160, and a division control unit 170. including. The transmission units 140-1 to 140-n may be collectively referred to as the transmission unit 140.
　入出力ポート１１０には、データ伝送先通信装置２００に伝送すべきデータが入力される。 The data to be transmitted to the data transmission destination communication device 200 is input to the input / output port 110.
　バッファ１２０には、入出力ポート１１０に入力されたデータが記憶される。 The buffer 120 stores data input to the input / output port 110.
　データ分割部１３０は、バッファ１２０に記憶されているデータを読み出して、分割制御部１７０の指示に応じて分割し、分割後のデータである分割データを生成する。そして、データ分割部１３０は、生成した分割データを送信部１４０に入力する。なお、分割手段は、例えば、データ分割部１３０によって実現される。 The data dividing unit 130 reads the data stored in the buffer 120 and divides the data in accordance with an instruction from the division control unit 170 to generate divided data that is data after division. Then, the data dividing unit 130 inputs the generated divided data to the transmitting unit 140. The dividing means is realized by the data dividing unit 130, for example.
　送信部１４０－１～ｎは、それぞれデータ伝送先通信装置２００との間の無線通信回線に対応するように用意されている。また、送信部１４０－１～ｎは、ヘッダ情報と、分割制御情報と、データ分割部１３０が入力した分割データとを含む分割パケットを生成する。送信部１４０－１～ｎは、対応している無線通信回線に応じて、生成した分割パケットを適応変調方式で送信する。送信手段は、例えば、送信部１４０によって実現される。 The transmission units 140-1 to 140-n are prepared so as to correspond to the wireless communication lines with the data transmission destination communication device 200, respectively. Further, the transmission units 140-1 to 140-n generate a divided packet including header information, division control information, and the divided data input by the data dividing unit 130. Transmitters 140-1 to 140-n transmit the generated divided packets using an adaptive modulation scheme in accordance with the corresponding wireless communication line. The transmission unit is realized by the transmission unit 140, for example.
　なお、ヘッダ情報は、図１において網掛けで示されている。また、分割制御情報は、図１において、右下がり斜線で示されている。そして、分割データは、図１において、左下がり斜線で示されている。 Note that the header information is shaded in FIG. Further, the division control information is shown by a diagonally downward slanting line in FIG. Then, the divided data is indicated by a left-downward oblique line in FIG.
　分割制御情報とは、送信部１４０－１～ｎが、複数の無線通信回線のうち、いずれの無線通信回線を使用するのかを示す情報である。 The division control information is information indicating which of the plurality of wireless communication lines is used by the transmission units 140-1 to 140-n.
　ヘッダ情報とは、変調方式情報と、分割情報とを含む情報である。変調方式情報とは、送信部１４０によって送信される分割パケットに施される変調の方式を示す情報である。また、分割情報とは、データ伝送先通信装置２００が各分割パケットに含まれている分割データを互いに結合するために必要な情報である。 The header information is information including modulation scheme information and division information. The modulation scheme information is information indicating a modulation scheme applied to the divided packet transmitted by the transmission unit 140. Further, the division information is information necessary for the data transmission destination communication apparatus 200 to combine the divided data included in each divided packet.
　受信部１５０は、データ伝送先通信装置２００が送信した情報を受信する。具体的には、受信部１５０は、例えば、データ伝送先通信装置２００が送信した、要求変調方式情報、および通信品質情報を受信する。そして、受信部１５０は、送信制御部１６０に要求変調方式情報を入力する。また、受信部１５０は、分割制御部１７０に通信品質情報を入力する。なお、要求変調方式情報および通信品質情報については後述する。 The receiving unit 150 receives information transmitted by the data transmission destination communication device 200. Specifically, the receiving unit 150 receives, for example, request modulation method information and communication quality information transmitted by the data transmission destination communication device 200. Then, the receiving unit 150 inputs the requested modulation method information to the transmission control unit 160. Further, the receiving unit 150 inputs communication quality information to the division control unit 170. The requested modulation method information and communication quality information will be described later.
　送信制御部１６０は、受信部１５０が入力した要求変調方式情報に基づいて、変調方式を示す変調方式指示情報を送信部１４０に入力する。 The transmission control unit 160 inputs modulation scheme instruction information indicating a modulation scheme to the transmission unit 140 based on the requested modulation scheme information input by the reception unit 150.
　分割制御部１７０は、受信部１５０が入力した通信品質情報に基づいて、分割パケットの送信態様を決定する。そして、分割制御部１７０は、決定した、分割パケットの送信態様を示す送信態様情報を生成する。分割制御部１７０は、データ分割部１３０および送信部１４０に生成した送信態様情報を入力する。なお、送信態様情報とは、分割パケットの送信に用いる無線通信回線を示す情報であるが、詳細については後述する。 The division control unit 170 determines the transmission mode of the divided packet based on the communication quality information input by the reception unit 150. Then, the division control unit 170 generates transmission mode information indicating the determined transmission mode of the divided packet. The division control unit 170 inputs the generated transmission mode information to the data division unit 130 and the transmission unit 140. The transmission mode information is information indicating a wireless communication line used for transmitting the divided packet, and details will be described later.
　次に、データ伝送先通信装置２００の構成について、図面を参照して説明する。図３は、第１の実施形態のデータ伝送先通信装置２００の構成例を示すブロック図である。図３に示すように、データ伝送先通信装置２００は、入出力ポート２１０、データ結合部２３０、受信部２４０－１～ｎ、送信部２５０、受信情報生成部２６０、および結合制御部２７０を含む。なお、受信部２４０－１～ｎを受信部２４０と総称することがある。受信手段は、例えば、受信部２４０によって実現される。また、情報生成手段は、例えば、受信情報生成部２６０によって実現される。 Next, the configuration of the data transmission destination communication device 200 will be described with reference to the drawings. FIG. 3 is a block diagram illustrating a configuration example of the data transmission destination communication device 200 according to the first embodiment. As shown in FIG. 3, the data transmission destination communication device 200 includes an input / output port 210, a data combination unit 230, reception units 240-1 to 240-n, a transmission unit 250, a reception information generation unit 260, and a combination control unit 270. . The receiving units 240-1 to 240-n may be collectively referred to as the receiving unit 240. The receiving means is realized by the receiving unit 240, for example. Further, the information generation unit is realized by the reception information generation unit 260, for example.
　受信部２４０は、データ伝送元通信装置１００の送信部１４０が送信した分割パケットを受信する。そして、受信部２４０は、受信した分割パケットに含まれている分割制御情報を結合制御部２７０に入力する。また、受信部２４０は、分割パケットに含まれているヘッダ情報と分割データとをデータ結合部２３０に入力する。さらに、受信部２４０は、受信した分割パケットに応じた受信信号を受信情報生成部２６０に入力する。なお、受信部２４０－１～ｎは、それぞれデータ伝送元通信装置１００との間の無線通信回線に対応するように用意されている。 The reception unit 240 receives the divided packet transmitted by the transmission unit 140 of the data transmission source communication device 100. Then, the reception unit 240 inputs the division control information included in the received divided packet to the combination control unit 270. The receiving unit 240 inputs the header information and the divided data included in the divided packet to the data combining unit 230. Further, the reception unit 240 inputs a reception signal corresponding to the received divided packet to the reception information generation unit 260. Receiving units 240-1 to 240-n are prepared so as to correspond to wireless communication lines with data transmission source communication device 100, respectively.
　結合制御部２７０は、受信部２４０が入力した分割制御情報に基づいて、データ結合部２３０に分割データの結合を指示する。 The combination control unit 270 instructs the data combining unit 230 to combine divided data based on the division control information input by the receiving unit 240.
　データ結合部２３０は、結合制御部２７０の指示に応じて、受信部２４０が入力した分割データを結合する。そして、データ結合部２３０は、結合後のデータを入出力ポート２１０に入力する。 The data combining unit 230 combines the divided data input by the receiving unit 240 in accordance with an instruction from the combining control unit 270. Then, the data combining unit 230 inputs the combined data to the input / output port 210.
　入出力ポート２１０は、データ結合部２３０が入力したデータを出力する。 The input / output port 210 outputs the data input by the data combining unit 230.
　受信情報生成部２６０は、受信部２４０が入力した受信信号に基づいて、要求変調方式情報と通信品質情報とを生成する。そして、受信情報生成部２６０は、生成した要求変調方式情報と通信品質情報とを送信部２５０に入力する。 The reception information generation unit 260 generates request modulation method information and communication quality information based on the reception signal input by the reception unit 240. Then, reception information generation section 260 inputs the generated required modulation scheme information and communication quality information to transmission section 250.
　送信部２５０は、受信情報生成部２６０が入力した要求変調方式情報と通信品質情報とを送信する。 The transmission unit 250 transmits the request modulation method information and communication quality information input by the reception information generation unit 260.
　要求変調方式情報について説明する。要求変調方式情報とは、データ伝送先通信装置２００がデータ伝送元通信装置１００に、分割パケットを送信する場合に採用を要求する変調方式を示す情報である。具体的には、データ伝送先通信装置２００の受信情報生成部２６０が、受信信号に応じて、送信される分割パケットの変調方式を示す要求変調方式情報を生成する。例えば、受信情報生成部２６０は、受信信号におけるＣＮＲ（Ｃａｒｒｉｅｒ　ｔｏ　Ｎｏｉｓｅ　Ｒａｔｉｏ：搬送波対雑音比）を測定し、測定結果の値に応じた多値数の変調方式を示す要求変調方式情報を生成する。ここで、受信情報生成部２６０による測定結果の値であるＣＮＲの値が大きいほどデータ伝送元通信装置１００とデータ伝送先通信装置２００との間の通信状況が良好であり、ＣＮＲの値が小さいほどデータ伝送元通信装置１００とデータ伝送先通信装置２００との間の通信状況が不良であると考えられる。そこで、受信情報生成部２６０は、測定結果の値であるＣＮＲの値が大きいほどより多値数の値が大きい変調方式を示す要求変調方式情報を生成する。また、受信情報生成部２６０は、測定結果の値であるＣＮＲの値が小さいほどより多値数の値が小さい変調方式を示す要求変調方式情報を生成する。 Request modulation method information will be described. The requested modulation method information is information indicating a modulation method that is required to be adopted when the data transmission destination communication device 200 transmits a divided packet to the data transmission source communication device 100. Specifically, the reception information generation unit 260 of the data transmission destination communication apparatus 200 generates request modulation method information indicating the modulation method of the transmitted divided packet according to the received signal. For example, the reception information generation unit 260 measures a CNR (Carrier to Noise Ratio) in the reception signal, and generates request modulation method information indicating a multi-value modulation method according to the value of the measurement result. . Here, the larger the CNR value as the value of the measurement result by the reception information generation unit 260, the better the communication status between the data transmission source communication device 100 and the data transmission destination communication device 200, and the smaller the CNR value. It is considered that the communication status between the data transmission source communication device 100 and the data transmission destination communication device 200 is poor. Therefore, the reception information generation unit 260 generates request modulation method information indicating a modulation method in which the value of the multi-value number is larger as the CNR value that is the value of the measurement result is larger. Also, the reception information generation unit 260 generates request modulation scheme information indicating a modulation scheme in which the value of the multi-value number is smaller as the CNR value that is the value of the measurement result is smaller.
　そして、生成されて送信された要求変調方式情報に基づく変調方式指示情報が入力された送信部１４０は、当該変調方式指示情報が示す変調方式で、分割パケットを変調して送信する。 Then, the transmission unit 140 to which the modulation scheme instruction information based on the request modulation scheme information generated and transmitted is input modulates and transmits the divided packet with the modulation scheme indicated by the modulation scheme instruction information.
　そのような構成により、通信状況が良好である場合にはより高速で分割パケットを伝送することができる。また、通信状況が不良である場合にはより確実に分割パケットを伝送することができる。 Such a configuration makes it possible to transmit a divided packet at a higher speed when the communication condition is good. Further, when the communication status is poor, the divided packet can be transmitted more reliably.
　変調方式指示情報について説明する。変調方式指示情報とは、送信部１４０が送信する分割パケットに施す変調の方式（変調方式）を示す情報である。本例では、送信制御部１６０は、要求変調方式情報が示す変調方式を示す変調方式指示情報を生成する。 Explanation of modulation method instruction information. The modulation scheme instruction information is information indicating a modulation scheme (modulation scheme) applied to the divided packet transmitted by the transmission unit 140. In this example, the transmission control unit 160 generates modulation scheme instruction information indicating the modulation scheme indicated by the required modulation scheme information.
　通信品質情報について説明する。通信品質情報とは、データ伝送先通信装置２００の受信部２４０がデータ伝送元通信装置１００から送信された分割パケットに基づく受信信号の質を示す情報である。本例では、分割パケットは、送信部１４０－１～ｎのそれぞれによって送信され、各送信部１４０－１～ｎのそれぞれに応じた無線通信回線を介して受信部２４０－１～ｎによって受信される。したがって、通信品質情報によって、各送信部１４０－１～ｎおよび各受信部２４０－１～ｎのそれぞれに応じた各無線通信回線の通信状況が示される。 Explain communication quality information. The communication quality information is information indicating the quality of the received signal based on the divided packet transmitted from the data transmission source communication device 100 by the reception unit 240 of the data transmission destination communication device 200. In this example, the divided packet is transmitted by each of the transmission units 140-1 to 140-n and received by the reception units 240-1 to 240-n via the wireless communication lines corresponding to each of the transmission units 140-1 to 140-n. The Accordingly, the communication quality information indicates the communication status of each wireless communication line corresponding to each of the transmitting units 140-1 to 140-n and the receiving units 240-1 to 240-n.
　通信品質情報は、具体的には、例えば、各無線通信回線を介して送受信された受信信号のＣＮＲの値のそれぞれを示す情報である。 More specifically, the communication quality information is, for example, information indicating each CNR value of a received signal transmitted / received via each wireless communication line.
　そして、生成されて送信された通信品質情報が入力された分割制御部１７０は、当該通信品質情報に基づいて、分割パケットの送信態様を決定する。なお、本例では、送信態様として、いずれの無線通信回線を介して分割パケットを送信するのかが決定される。 And the division | segmentation control part 170 into which the communication quality information produced | generated and transmitted was input determines the transmission aspect of a division | segmentation packet based on the said communication quality information. In this example, it is determined as a transmission mode through which wireless communication line the divided packet is transmitted.
　送信態様情報について説明する。送信態様情報とは、分割制御部１７０が通信品質情報に基づいて決定した送信態様を示す情報である。具体的には、分割制御部１７０は、通信状況が良好な無線通信回線を選択し、選択した無線通信回線を介して分割パケットを送信すると決定して、決定結果に応じて、選択した無線通信回線を示す送信態様情報を生成する。なお、送信態様情報は、選択した無線通信回線に応じた送信部１４０を示す情報であってもよい。 Explanation of transmission mode information. The transmission mode information is information indicating the transmission mode determined by the division control unit 170 based on the communication quality information. Specifically, the division control unit 170 selects a wireless communication line with good communication status, determines to transmit a divided packet via the selected wireless communication line, and selects the selected wireless communication according to the determination result. Transmission mode information indicating a line is generated. Note that the transmission mode information may be information indicating the transmission unit 140 corresponding to the selected wireless communication line.
　分割制御部１７０は、送信態様情報をデータ分割部１３０および送信部１４０に入力する。データ分割部１３０は、バッファ１２０から読み出したデータを送信態様情報に応じて分割して、分割パケットを生成する。なお、データ分割部１３０は、送信態様情報によって示されている無線通信回線の数に応じて、データを分割する。具体的には、例えば、送信態様情報によって３つの無線通信回線が示されている場合に、データを３つに分割して、３つの分割データを生成する。そして、分割制御部１７０は、生成した分割データを送信態様情報に応じた（より具体的には、例えば、送信態様情報が示す無線通信回線に応じた）送信部１４０（例えば、送信部１４０－１～３）に入力する。分割データは、分割パケットに含まれて、送信態様情報に応じた送信部１４０によって送信される。 The division control unit 170 inputs the transmission mode information to the data division unit 130 and the transmission unit 140. The data division unit 130 divides the data read from the buffer 120 according to the transmission mode information, and generates a divided packet. Data divider 130 divides data according to the number of wireless communication lines indicated by the transmission mode information. Specifically, for example, when three wireless communication lines are indicated by the transmission mode information, the data is divided into three to generate three divided data. Then, the division control unit 170 transmits the generated divided data according to the transmission mode information (more specifically, for example, according to the wireless communication line indicated by the transmission mode information) (for example, the transmission unit 140- Enter 1 to 3). The divided data is included in the divided packet and transmitted by the transmission unit 140 corresponding to the transmission mode information.
　そのような構成により、通信状況が良好な無線通信回線を介した分割パケットの送受信が可能になる。 Such a configuration makes it possible to transmit and receive divided packets via a wireless communication line with good communication conditions.
　なお、送信部１４０－１～ｎ、受信部１５０は、例えば、通信モジュールによって実現される。データ分割部１３０、送信制御部１６０、および分割制御部１７０は、例えば、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）や、複数の回路によって実現される。バッファ１２０は、例えば、メモリ等の記憶手段によって実現される。入出力ポート１１０は、例えば、入出力インタフェースによって実現される。 The transmission units 140-1 to 140-n and the reception unit 150 are realized by a communication module, for example. The data dividing unit 130, the transmission control unit 160, and the division control unit 170 are realized by, for example, a CPU (Central Processing Unit) and a plurality of circuits. The buffer 120 is realized by storage means such as a memory, for example. The input / output port 110 is realized by an input / output interface, for example.
　また、受信部２４０－１～ｎ、送信部２５０は、例えば、通信モジュールによって実現される。データ結合部２３０、受信情報生成部２６０、および結合制御部２７０は、例えば、ＣＰＵや、複数の回路によって実現される。バッファ１２０は、例えば、メモリ等の記憶手段によって実現される。入出力ポート２１０は、例えば、入出力インタフェースによって実現される。 Further, the receiving units 240-1 to 240-n and the transmitting unit 250 are realized by a communication module, for example. The data combination unit 230, the reception information generation unit 260, and the combination control unit 270 are realized by, for example, a CPU or a plurality of circuits. The buffer 120 is realized by storage means such as a memory, for example. The input / output port 210 is realized by, for example, an input / output interface.
　なお、通信回線選択手段は、例えば、分割制御部１７０によって実現される。 Note that the communication line selection means is realized by the division control unit 170, for example.
　次に、第１の実施形態の通信システム３００の動作について説明する。まず、データ伝送元通信装置１００の動作について説明する。図４は、データ伝送元通信装置１００の動作を示すフローチャートである。 Next, the operation of the communication system 300 according to the first embodiment will be described. First, the operation of the data transmission source communication device 100 will be described. FIG. 4 is a flowchart showing the operation of the data transmission source communication device 100.
　データ伝送元通信装置１００において、データ分割部１３０が、入出力ポート１１０に入力されてバッファ１２０に記憶されたデータを読み出す（ステップＳ１０１）。 In the data transmission source communication device 100, the data dividing unit 130 reads the data input to the input / output port 110 and stored in the buffer 120 (step S101).
　そして、データ分割部１３０は、分割制御部１７０が入力した送信態様情報に基づいて、ステップＳ１０１の処理で読み出したデータを分割する（ステップＳ１０２）。データ分割部１３０は、送信態様情報が示す無線通信回線に応じた送信部１４０に、分割後のデータである分割データと、分割情報と、分割制御情報とを入力する。本例では、データ分割部１３０は、ステップＳ１０２の処理で、送信部１４０－１～３に、分割データと分割情報と分割制御情報とを入力したとする。 Then, the data dividing unit 130 divides the data read out in the process of step S101 based on the transmission mode information input by the division control unit 170 (step S102). The data division unit 130 inputs the divided data, the division information, and the division control information, which are data after division, to the transmission unit 140 corresponding to the wireless communication line indicated by the transmission mode information. In this example, it is assumed that the data dividing unit 130 inputs the divided data, the division information, and the division control information to the transmission units 140-1 to 140-3 in the process of step S102.
　送信部１４０－１～３は、変調方式情報と、データ分割部１３０が入力した、分割データ、分割情報、および分割制御情報とを含む分割パケットを生成する（ステップＳ１０３）。なお、変調方式情報とは、変調方式指示情報が示す変調方式を示す情報である。そして、変調方式情報と分割情報とによって、ヘッダ情報が構成される。 The transmitting units 140-1 to 140-3 generate a divided packet including the modulation scheme information and the divided data, the divided information, and the divided control information input by the data dividing unit 130 (step S103). The modulation scheme information is information indicating the modulation scheme indicated by the modulation scheme instruction information. And header information is comprised by modulation system information and division | segmentation information.
　そして、送信部１４０－１～３は、分割パケットに、変調方式指示情報が示す変調方式で変調処理を施す（ステップＳ１０４）。送信部１４０－１～３は、ステップＳ１０４の処理で変調処理を施した分割パケットを送信する（ステップＳ１０５）。 Then, the transmission units 140-1 to 140-3 perform modulation processing on the divided packets using the modulation scheme indicated by the modulation scheme instruction information (step S104). The transmission units 140-1 to 140-3 transmit the divided packets subjected to the modulation process in the process of step S104 (step S105).
　受信部１５０は、送信部１４０－１～３がステップＳ１０５の処理で送信した分割パケットに応じた要求変調方式情報と通信品質情報とを受信する（ステップＳ１０６）。 The receiving unit 150 receives the request modulation method information and the communication quality information corresponding to the divided packet transmitted by the transmitting units 140-1 to 140-3 in the process of step S105 (step S106).
　受信部１５０は、送信制御部１６０に、ステップＳ１０６の処理で受信した要求変調方式情報を入力する（ステップＳ１０７）。そして、送信制御部１６０は、要求変調方式情報が示す変調方式を示す変調方式指示情報を生成する。そして、送信制御部１６０は、送信部１４０に、生成した変調方式指示情報を入力する（ステップＳ１０８）。 The receiving unit 150 inputs the request modulation method information received in the process of step S106 to the transmission control unit 160 (step S107). Then, the transmission control unit 160 generates modulation scheme instruction information indicating the modulation scheme indicated by the required modulation scheme information. Then, the transmission control unit 160 inputs the generated modulation scheme instruction information to the transmission unit 140 (step S108).
　また、受信部１５０は、分割制御部１７０に通信品質情報を入力する（ステップＳ１０９）。そして、分割制御部１７０は、受信部１５０が入力した通信品質情報に基づいて、分割パケットの送信態様を決定する（ステップＳ１１０）。 Further, the receiving unit 150 inputs communication quality information to the division control unit 170 (step S109). And the division | segmentation control part 170 determines the transmission aspect of a division | segmentation packet based on the communication quality information which the receiving part 150 input (step S110).
　ステップＳ１１０の処理における分割パケットの送信態様の決定について説明する。本例では、通信品質情報は、ＣＮＲの値を示す情報であるとする。また、データ伝送元通信装置１００の記憶手段（図示せず。バッファ１２０であってもよい）には、通信品質情報が示す値と比較するための閾値が記憶されているとする。なお、閾値は、データ伝送元通信装置１００とデータ伝送先通信装置２００との間の分割パケットの送受信において、エラーが生じない、またはＢＥＲの値が所定値以下になるＣＮＲの値に応じて設定されているとする。具体的には、閾値は、例えば、当該ＣＮＲの値や、当該ＣＮＲの値に所定の値が加算された値である。 The determination of the transmission mode of the divided packets in the process of step S110 will be described. In this example, it is assumed that the communication quality information is information indicating a CNR value. Further, it is assumed that a threshold for comparison with a value indicated by the communication quality information is stored in the storage unit (not shown, which may be the buffer 120) of the data transmission source communication device 100. The threshold value is set according to the CNR value at which no error occurs or the BER value is equal to or lower than a predetermined value in transmission / reception of the divided packet between the data transmission source communication device 100 and the data transmission destination communication device 200. Suppose that Specifically, the threshold value is, for example, the CNR value or a value obtained by adding a predetermined value to the CNR value.
　したがって、通信品質情報が示す値が閾値以上の値であれば、データ伝送元通信装置１００とデータ伝送先通信装置２００との間の分割パケットの送受信において、エラーが生じない、またはＣＮＲの値が所定値以下になる。よって、通信品質情報が示す値が閾値以上の値の状態であれば、データ伝送元通信装置１００とデータ伝送先通信装置２００との間で回線断が生じないといえる。なお、閾値は、データ伝送元通信装置１００とデータ伝送先通信装置２００との間で回線断が生じないＣＮＲの値に、所定の値を加算した和の値であってもよい。そのような構成によれば、所定の値によって、回線断が生じるほどＣＮＲの値が減少する前に、無線通信回線の通信状況が悪化したと判断して、回線断の発生を未然に防ぐことができる。 Therefore, if the value indicated by the communication quality information is equal to or greater than the threshold value, no error occurs in transmission / reception of the divided packet between the data transmission source communication device 100 and the data transmission destination communication device 200, or the CNR value is It becomes below a predetermined value. Therefore, if the value indicated by the communication quality information is equal to or greater than the threshold value, it can be said that no line disconnection occurs between the data transmission source communication device 100 and the data transmission destination communication device 200. Note that the threshold value may be a sum value obtained by adding a predetermined value to a CNR value at which no line disconnection occurs between the data transmission source communication device 100 and the data transmission destination communication device 200. According to such a configuration, it is determined that the communication status of the wireless communication line has deteriorated before the CNR value decreases so as to cause a line disconnection by a predetermined value, and the occurrence of the line disconnection is prevented in advance. Can do.
　分割制御部１７０は、ステップＳ１１０の処理で、閾値と、通信品質情報が示す、各無線通信回線に応じた値のそれぞれとを比較する。そして、データ分割部１３０は、閾値以上の値に応じた無線通信回線を選択し、選択した無線通信回線を介して分割パケットを送信すると決定して、決定結果に応じて、選択した無線通信回線を示す送信態様情報を生成する。 In step S110, the division control unit 170 compares the threshold value with each value corresponding to each wireless communication line indicated by the communication quality information. Then, the data dividing unit 130 selects a wireless communication line corresponding to a value equal to or greater than the threshold value, determines to transmit a divided packet via the selected wireless communication line, and selects the selected wireless communication line according to the determination result. Is generated.
　換言すれば、分割制御部１７０は、ステップＳ１１０の処理で、閾値未満の値に応じた無線通信回線を介して分割パケットを送信しないと決定する。そして、分割制御部１７０は、データ分割部１３０および送信部１４０に、ステップＳ１１０の処理における決定結果に応じて生成した送信態様情報を入力する（ステップＳ１１１）。 In other words, the division control unit 170 determines not to transmit the divided packet via the wireless communication line corresponding to the value less than the threshold in the process of step S110. Then, the division control unit 170 inputs the transmission mode information generated according to the determination result in the process of step S110 to the data division unit 130 and the transmission unit 140 (step S111).
　なお、ステップＳ１０７，Ｓ１０８の処理と、ステップＳ１０９～Ｓ１１１の処理とは、同時に行われてもよいし、ステップＳ１０９～Ｓ１１１がステップＳ１０７，Ｓ１０８の処理に先行して行われてもよい。 Note that the processing of steps S107 and S108 and the processing of steps S109 to S111 may be performed simultaneously, or steps S109 to S111 may be performed prior to the processing of steps S107 and S108.
　次に、データ伝送先通信装置２００の動作について説明する。図５は、データ伝送先通信装置２００の動作を示すフローチャートである。 Next, the operation of the data transmission destination communication device 200 will be described. FIG. 5 is a flowchart showing the operation of the data transmission destination communication device 200.
　データ伝送先通信装置２００において、受信部２４０が、データ伝送元通信装置１００の送信部１４０によって送信された分割パケットを受信する（ステップＳ２０１）。本例では、ステップＳ２０１の処理で、受信部２４０－１～３が、データ伝送元通信装置１００の送信部１４０－１～３によって送信された分割パケットを受信する。 In the data transmission destination communication device 200, the reception unit 240 receives the divided packet transmitted by the transmission unit 140 of the data transmission source communication device 100 (step S201). In this example, the receiving units 240-1 to 240-3 receive the divided packets transmitted by the transmitting units 140-1 to 140-3 of the data transmission source communication device 100 in the process of step S201.
　そして、受信部２４０は、受信した分割パケットに含まれている分割制御情報を結合制御部２７０に入力する。また、受信部２４０は、分割パケットに含まれているヘッダ情報と分割データとをデータ結合部２３０に入力する。さらに、受信部２４０は、受信した分割パケットの受信信号を受信情報生成部２６０に入力する。 Then, the reception unit 240 inputs the division control information included in the received divided packet to the combination control unit 270. The receiving unit 240 inputs the header information and the divided data included in the divided packet to the data combining unit 230. Furthermore, the reception unit 240 inputs the received signal of the divided packet to the reception information generation unit 260.
　結合制御部２７０は、受信部２４０が入力した分割制御情報に基づいて、データ結合部２３０に分割データの結合を指示する（ステップＳ２０２）。本例では、分割制御情報によって、受信部２４０－１～３に応じた無線通信回線を使用することが示されているとする。そこで、結合制御部２７０は、受信部２４０－１～３が受信した分割パケットに含まれている分割データを互いに結合することをデータ結合部２３０に指示する。 The combination control unit 270 instructs the data combining unit 230 to combine the divided data based on the division control information input by the receiving unit 240 (step S202). In this example, it is assumed that the division control information indicates that a wireless communication line corresponding to the receiving units 240-1 to 240-3 is used. Therefore, the combining control unit 270 instructs the data combining unit 230 to combine the divided data included in the divided packets received by the receiving units 240-1 to 240-3.
　データ結合部２３０は、結合制御部２７０の指示に応じて、分割パケットに含まれている、ヘッダ情報の分割情報に基づき分割データを互いに結合する（ステップＳ２０３）。そして、データ結合部２３０は、結合後のデータを入出力ポート２１０に入力する。 The data combining unit 230 combines the divided data with each other based on the division information of the header information included in the divided packet in accordance with the instruction from the combination control unit 270 (step S203). Then, the data combining unit 230 inputs the combined data to the input / output port 210.
　入出力ポート２１０は、データ結合部２３０が入力した、結合後のデータを出力する（ステップＳ２０４）。 The input / output port 210 outputs the combined data input by the data combining unit 230 (step S204).
　受信情報生成部２６０は、受信部２４０が入力した受信信号に基づいて、要求変調方式情報と通信品質情報とを生成する（ステップＳ２０５）。そして、受信情報生成部２６０は、生成した要求変調方式情報と通信品質情報とを送信部２５０に入力する。 The reception information generation unit 260 generates request modulation method information and communication quality information based on the reception signal input by the reception unit 240 (step S205). Then, reception information generation section 260 inputs the generated required modulation scheme information and communication quality information to transmission section 250.
　送信部２５０は、受信情報生成部２６０が入力した要求変調方式情報と通信品質情報とを送信する（ステップＳ２０６）。 The transmission unit 250 transmits the request modulation method information and the communication quality information input by the reception information generation unit 260 (step S206).
　なお、ステップＳ２０２～Ｓ２０４の処理は、ステップＳ２０５，２０６の処理と同時に行われてもよいし、ステップＳ２０５，２０６の処理がステップＳ２０２～Ｓ２０４の処理に先行して行われてもよい。 Note that the processing of steps S202 to S204 may be performed simultaneously with the processing of steps S205 and 206, or the processing of steps S205 and 206 may be performed prior to the processing of steps S202 to S204.
　本実施形態によれば、データ伝送元通信装置１００の送信部１４０が、分割されたデータである分割データを含む分割パケットを送信する。データ伝送先通信装置２００の受信部２４０が、送信部１４０によって送信された分割パケットを受信する。そして、データ結合部２３０が、分割データを互いに結合する。 According to the present embodiment, the transmission unit 140 of the data transmission source communication device 100 transmits a divided packet including divided data that is divided data. The receiving unit 240 of the data transmission destination communication apparatus 200 receives the divided packet transmitted by the transmitting unit 140. Then, the data combining unit 230 combines the divided data with each other.
　また、受信部２４０が受信した分割パケットに基づいて、受信情報生成部２６０が、要求変調方式情報と通信品質情報とを生成する。送信部２５０が、受信情報生成部２６０が生成した要求変調方式情報と通信品質情報とを送信する。 Also, based on the divided packet received by the receiving unit 240, the reception information generating unit 260 generates request modulation method information and communication quality information. The transmission unit 250 transmits the request modulation method information and the communication quality information generated by the reception information generation unit 260.
　データ伝送元通信装置１００の分割制御部１７０が、送信された通信品質情報に基づいて、つまり、前回の分割パケットの送信結果に応じて、今回の分割パケットの送信に用いる無線通信回線を含む送信態様を決定する。 Transmission including the wireless communication line used for transmission of the current divided packet based on the transmitted communication quality information, that is, according to the transmission result of the previous divided packet, by the division control unit 170 of the data transmission source communication apparatus 100 Determine aspects.
　そして、データ分割部１３０が、分割制御部１７０による決定結果に応じてデータを分割し、今回送信する分割パケットに含まれる分割データを生成する。そして、今回の分割パケットの送信に用いる無線通信回線に応じた送信部１４０が、送信された要求変調方式情報に基づいて、つまり、前回の分割パケットの送信結果に応じて、今回送信する分割パケットを生成して変調処理を施し、送信する。 Then, the data dividing unit 130 divides the data according to the determination result by the division control unit 170, and generates divided data included in the divided packet to be transmitted this time. Then, the transmission unit 140 corresponding to the wireless communication line used for transmission of the current divided packet transmits the divided packet to be transmitted this time based on the transmitted request modulation method information, that is, according to the transmission result of the previous divided packet. Is generated, modulated, and transmitted.
　したがって、今回の分割パケットの送信には、前回に送信した分割パケットが受信された状況に応じて、通信状況が良好な無線通信回線が用いられ、通信状況が不良な無線通信回線は用いられない。よって、今回送信される分割パケットが、無線通信回線の通信状況が不良であることにより適切にデータ伝送先通信装置２００によって受信されないという問題の発生を未然に防ぐことができる。 Therefore, for the transmission of the current divided packet, a wireless communication line with a good communication state is used and a wireless communication line with a bad communication state is not used according to the situation where the previously transmitted divided packet is received. . Therefore, it is possible to prevent the occurrence of the problem that the divided packet transmitted this time is not properly received by the data transmission destination communication device 200 due to the poor communication state of the wireless communication line.
　もし、一のデータに基づく複数の分割パケットのうち一の分割パケットが適切にデータ伝送先通信装置２００によって受信されなかった場合に、データ伝送先通信装置２００は、残部の分割パケットを互いに結合しても当該一のデータに復元することができない。したがって、データ伝送先通信装置２００は、当該残部の分割パケットを廃棄してデータ伝送元通信装置１００に再送を要求し、再送された分割パケットを受信して結合し、当該一のデータに復元することになる。よって、当該問題が発生した場合に、前回に適切に送受信された分割パケットを含む、一のデータに基づく分割パケットを全て再送しなければならない。 If one of the plurality of divided packets based on one data is not properly received by the data transmission destination communication device 200, the data transmission destination communication device 200 combines the remaining divided packets with each other. However, it cannot be restored to the one data. Therefore, the data transmission destination communication device 200 discards the remaining divided packets, requests the data transmission source communication device 100 to retransmit, receives and combines the retransmitted divided packets, and restores the one data. It will be. Therefore, when the problem occurs, all the divided packets based on one data, including the divided packet that was appropriately transmitted and received last time, must be retransmitted.
　それに対して、本実施形態によれば、そのような問題の発生を未然に防ぐことができるので、分割パケットの再送を要する状況を未然に防ぐことができる。 On the other hand, according to the present embodiment, such a problem can be prevented from occurring, so that a situation that requires retransmission of the divided packet can be prevented.
　なお、データ伝送元通信装置１００の分割制御部１７０によって選択されず、送信部１４０による分割パケットの送信に用いられなかった無線通信回線であっても、送信部１４０と受信部２４０との間で、制御用信号の送受信が行われているとする。そして、受信情報生成部２６０は、当該制御用信号の送受信結果に基づいて、要求変調方式情報と通信品質情報とを生成し、ステップＳ２０５以降の処理を実行する。そのような構成によれば、通信状況が悪化して分割制御部１７０によって選択されず、送信部１４０による分割パケットの送信に用いられなかった無線通信回線の通信状況が改善した場合に、当該無線通信回線を用いた分割パケットの送受信を再開することができる。 Note that even a wireless communication line that is not selected by the division control unit 170 of the data transmission source communication device 100 and is not used for transmission of the divided packet by the transmission unit 140 is between the transmission unit 140 and the reception unit 240. Assume that control signals are transmitted and received. Then, the reception information generation unit 260 generates request modulation method information and communication quality information based on the transmission / reception result of the control signal, and executes the processes after step S205. According to such a configuration, when the communication state deteriorates and is not selected by the division control unit 170 and the communication state of the wireless communication line that has not been used for transmission of the divided packet by the transmission unit 140 is improved, the wireless Transmission / reception of divided packets using the communication line can be resumed.
　本実施形態によれば、分割制御部１７０が、分割パケットの送信態様の決定がＣＮＲの値のみに基づくという簡便な処理によって行われるので、当該処理が迅速に行われ、使用する無線通信回線を迅速に切り替えることができる。 According to the present embodiment, since the division control unit 170 performs a simple process in which the determination of the transmission mode of the divided packet is based only on the value of the CNR, the process is quickly performed and the wireless communication line to be used is determined. You can switch quickly.
　なお、分割制御部１７０が行う分割パケットの送信態様の決定は、ＣＮＲの値のみに基づくことに限定されず、ＢＥＲ（Ｂｉｔ　Ｅｒｒｏｒ　Ｒａｔｅ）の値や、ＳＮＲ（Ｓｉｇｎａｌ　ｔｏ　Ｎｏｉｓｅ　Ｒａｔｉｏ）の値、受信部２４０が受信した分割パケットの受信レベルの値等に基づいて行われてもよい。 In addition, the determination of the transmission mode of the divided packet performed by the division control unit 170 is not limited to only based on the CNR value, but the BER (Bit Error Rate) value, the SNR (Signal to Noise Ratio) value, and the reception This may be performed based on the value of the reception level of the divided packet received by unit 240.
　実施形態２．
　次に、第２の実施形態について、図面を参照して説明する。図６は、第２の実施形態のデータ伝送元通信装置１０２の構成例を示すブロック図である。図７は、第２の実施形態のデータ伝送先通信装置２０２の構成例を示すブロック図である。 Embodiment 2. FIG.
Next, a second embodiment will be described with reference to the drawings. FIG. 6 is a block diagram illustrating a configuration example of the data transmission source communication apparatus 102 according to the second embodiment. FIG. 7 is a block diagram illustrating a configuration example of the data transmission destination communication device 202 according to the second embodiment.
　第１の実施形態では、データ伝送元通信装置１００の分割制御部１７０が、受信部１５０が入力した通信品質情報に基づいて、分割パケットの送信態様を決定するように構成されている。それに対して、第２の実施形態では、データ伝送先通信装置２０２の受信情報生成部２６２が、分割パケットの送信態様を決定する。そして、決定結果の送信態様を示す送信態様情報が、データ伝送元通信装置１０２に送信される。 In the first embodiment, the division control unit 170 of the data transmission source communication device 100 is configured to determine the transmission mode of the divided packet based on the communication quality information input by the reception unit 150. On the other hand, in the second embodiment, the reception information generation unit 262 of the data transmission destination communication apparatus 202 determines the transmission mode of the divided packets. Then, transmission mode information indicating the transmission mode of the determination result is transmitted to the data transmission source communication apparatus 102.
　その他の構成は、図１～３に示す第１の実施形態における構成と同様なため、対応する構成要素には図１を同じ符号を付して説明を省略する。 Other configurations are the same as those in the first embodiment shown in FIGS. 1 to 3, and corresponding constituent elements are given the same reference numerals in FIG. 1 and description thereof is omitted.
　なお、通信回線選択手段は、例えば、受信情報生成部２６２によって実現される。 Note that the communication line selection means is realized by, for example, the reception information generation unit 262.
　図８は、第２の実施形態のデータ伝送元通信装置１０２の動作を示すフローチャートである。 FIG. 8 is a flowchart showing the operation of the data transmission source communication apparatus 102 of the second embodiment.
　データ伝送元通信装置１０２において、データ分割部１３０が、入出力ポート１１０に入力されてバッファ１２０に記憶されたデータを読み出す（ステップＳ３０１）。 In the data transmission source communication apparatus 102, the data dividing unit 130 reads the data input to the input / output port 110 and stored in the buffer 120 (step S301).
　そして、データ分割部１３０は、分割制御部１７２が入力した送信態様情報に基づいて、ステップＳ３０１の処理で読み出したデータを分割する（ステップＳ３０２）。そして、データ分割部１３０は、送信態様情報に応じた送信部１４０に、分割後のデータである分割データと、分割情報と、分割制御情報とを入力する。本例では、データ分割部１３０は、ステップＳ３０２の処理で、送信部１４０－１～３に、分割データと分割情報と分割制御情報とを入力したとする。 Then, the data dividing unit 130 divides the data read out in step S301 based on the transmission mode information input by the division control unit 172 (step S302). Then, the data dividing unit 130 inputs the divided data that is the data after the division, the division information, and the division control information to the transmission unit 140 according to the transmission mode information. In this example, it is assumed that the data division unit 130 has input the divided data, the division information, and the division control information to the transmission units 140-1 to 140-3 in the process of step S302.
　送信部１４０－１～３は、変調方式情報と、データ分割部１３０が入力した、分割データ、分割情報、および分割制御情報とを含む分割パケットを生成する（ステップＳ３０３）。 The transmitting units 140-1 to 140-3 generate a divided packet including the modulation scheme information and the divided data, the divided information, and the divided control information input by the data dividing unit 130 (step S303).
　そして、送信部１４０－１～３は、分割パケットに、変調方式指示情報が示す変調方式で変調処理を施す（ステップＳ３０４）。送信部１４０－１～３は、ステップＳ３０４の処理で変調処理を施した分割パケットを送信する（ステップＳ３０５）。 Then, the transmission units 140-1 to 140-3 perform modulation processing on the divided packets using the modulation scheme indicated by the modulation scheme instruction information (step S304). The transmission units 140-1 to 140-3 transmit the divided packets subjected to the modulation process in the process of step S304 (step S305).
　受信部１５０は、送信部１４０－１～３がステップＳ３０５の処理で送信した分割パケットに応じた要求変調方式情報と送信態様情報とを受信する（ステップＳ３０６）。 The receiving unit 150 receives the request modulation method information and the transmission mode information corresponding to the divided packet transmitted by the transmitting units 140-1 to 140-3 in the process of step S305 (step S306).
　受信部１５０は、送信制御部１６０に、ステップＳ３０６の処理で受信した要求変調方式情報を入力する（ステップＳ３０７）。そして、送信制御部１６０は、要求変調方式情報が示す変調方式を示す変調方式指示情報を生成する。送信制御部１６０は、送信部１４０に、生成した変調方式指示情報を入力する（ステップＳ３０８）。 The receiving unit 150 inputs the request modulation method information received in the process of step S306 to the transmission control unit 160 (step S307). Then, the transmission control unit 160 generates modulation scheme instruction information indicating the modulation scheme indicated by the required modulation scheme information. The transmission control unit 160 inputs the generated modulation scheme instruction information to the transmission unit 140 (step S308).
　また、受信部１５０は、分割制御部１７２に送信態様情報を入力する（ステップＳ３０９）。そして、分割制御部１７２は、データ分割部１３０および送信部１４０に、受信部１５０が入力した送信態様情報を入力する（ステップＳ３１０）。 Further, the receiving unit 150 inputs transmission mode information to the division control unit 172 (step S309). Then, the division control unit 172 inputs the transmission mode information input by the reception unit 150 to the data division unit 130 and the transmission unit 140 (step S310).
　次に、データ伝送先通信装置２０２の動作について説明する。図９は、第２の実施形態のデータ伝送先通信装置２０２の動作を示すフローチャートである。 Next, the operation of the data transmission destination communication device 202 will be described. FIG. 9 is a flowchart illustrating the operation of the data transmission destination communication apparatus 202 according to the second embodiment.
　データ伝送先通信装置２０２において、受信部２４０が、データ伝送元通信装置１０２の送信部１４０によって送信された分割パケットを受信する（ステップＳ４０１）。本例では、ステップＳ４０１の処理で、受信部２４０－１～３が、データ伝送元通信装置１０２の送信部１４０－１～３によって送信された分割パケットを受信する。 In the data transmission destination communication device 202, the reception unit 240 receives the divided packet transmitted by the transmission unit 140 of the data transmission source communication device 102 (step S401). In this example, the receiving units 240-1 to 240-3 receive the divided packets transmitted by the transmitting units 140-1 to 140-3 of the data transmission source communication apparatus 102 in the process of step S401.
　そして、受信部２４０は、受信した分割パケットに含まれている分割制御情報を結合制御部２７０に入力する。また、受信部２４０は、分割パケットに含まれているヘッダ情報と分割データとをデータ結合部２３０に入力する。さらに、受信部２４０は、受信した分割パケットの受信信号を受信情報生成部２６２に入力する。 Then, the reception unit 240 inputs the division control information included in the received divided packet to the combination control unit 270. The receiving unit 240 inputs the header information and the divided data included in the divided packet to the data combining unit 230. Further, the receiving unit 240 inputs the received signal of the divided packet to the reception information generating unit 262.
　結合制御部２７０は、受信部２４０が入力した分割制御情報に基づいて、データ結合部２３０に分割データの結合を指示する（ステップＳ４０２）。本例では、分割制御情報によって、受信部２４０－１～３に応じた無線通信回線を使用することが示されているとする。そこで、結合制御部２７０は、受信部２４０－１～３が受信した分割パケットに含まれている分割データを互いに結合することをデータ結合部２３０に指示する。 The combination control unit 270 instructs the data combining unit 230 to combine the divided data based on the division control information input by the receiving unit 240 (step S402). In this example, it is assumed that the division control information indicates that a wireless communication line corresponding to the receiving units 240-1 to 240-3 is used. Therefore, the combining control unit 270 instructs the data combining unit 230 to combine the divided data included in the divided packets received by the receiving units 240-1 to 240-3.
　データ結合部２３０は、結合制御部２７０の指示に応じて、分割パケットに含まれている、ヘッダ情報の分割情報に基づき分割データを互いに結合する（ステップＳ４０３）。そして、データ結合部２３０は、結合後のデータを入出力ポート２１０に入力する。 The data combining unit 230 combines the divided data with each other based on the division information of the header information included in the divided packet in accordance with the instruction from the combination control unit 270 (step S403). Then, the data combining unit 230 inputs the combined data to the input / output port 210.
　入出力ポート２１０は、データ結合部２３０が入力したデータを出力する（ステップＳ４０４）。 The input / output port 210 outputs the data input by the data combining unit 230 (step S404).
　受信情報生成部２６２は、受信部２４０が入力した受信信号に基づいて、要求変調方式情報と送信態様情報とを生成する（ステップＳ４０５）。なお、受信情報生成部２６２がステップＳ４０５の処理で行う送信態様情報の生成処理は、例えば、第１の実施形態において分割制御部１７０が行う処理と同様である。そして、受信情報生成部２６０は、生成した要求変調方式情報と送信態様情報とを送信部２５０に入力する。 The reception information generation unit 262 generates request modulation method information and transmission mode information based on the reception signal input by the reception unit 240 (step S405). Note that the transmission mode information generation processing performed by the reception information generation unit 262 in step S405 is the same as the processing performed by the division control unit 170 in the first embodiment, for example. Then, the reception information generation unit 260 inputs the generated request modulation method information and transmission mode information to the transmission unit 250.
　送信部２５０は、受信情報生成部２６２が入力した要求変調方式情報と送信態様情報とを送信する（ステップＳ４０６）。 The transmission unit 250 transmits the request modulation method information and the transmission mode information input by the reception information generation unit 262 (step S406).
　本実施形態によれば、第１の実施形態における効果と同様な効果を奏することができる。また、データ伝送先通信装置２０２の受信情報生成部２６２が送信態様情報を生成するので、データ伝送元通信装置１０２の処理負荷を軽減することができる。 According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the reception information generation unit 262 of the data transmission destination communication device 202 generates transmission mode information, the processing load on the data transmission source communication device 102 can be reduced.
　なお、以上に述べた実施形態では、分割パケットは、データ伝送元通信装置からデータ伝送先通信装置へ送信されている。しかし、分割パケットは、データ伝送先通信装置からデータ伝送元通信装置へも送信されるように構成されていてもよい。つまり、データ伝送元通信装置とデータ伝送先通信装置との間で、双方向通信が行われるように構成されていてもよい。そのように構成される場合には、データ伝送元通信装置およびデータ伝送先通信装置は、データ伝送元通信装置１００，１０２の構成要素、およびデータ伝送先通信装置２００，２０２の構成要素をそれぞれ含む。 In the embodiment described above, the divided packet is transmitted from the data transmission source communication device to the data transmission destination communication device. However, the divided packet may be configured to be transmitted from the data transmission destination communication device to the data transmission source communication device. That is, two-way communication may be performed between the data transmission source communication device and the data transmission destination communication device. In such a configuration, the data transmission source communication device and the data transmission destination communication device include the components of the data transmission source communication devices 100 and 102 and the components of the data transmission destination communication devices 200 and 202, respectively. .
　実施形態３．
　次に、第３の実施形態の通信装置１０について、図面を参照して説明する。図１０は、第３の実施形態の通信装置１０の構成例を示すブロック図である。図１０に示すように、第３の実施形態の通信装置１０は、分割部１３と、送信部１４とを含む。 Embodiment 3. FIG.
Next, the communication apparatus 10 of 3rd Embodiment is demonstrated with reference to drawings. FIG. 10 is a block diagram illustrating a configuration example of the communication device 10 according to the third embodiment. As illustrated in FIG. 10, the communication device 10 according to the third embodiment includes a dividing unit 13 and a transmitting unit 14.
　通信装置１０は、図１，２に示す第１の実施形態におけるデータ伝送元通信装置１００、または図６に示す第２の実施形態におけるデータ伝送元通信装置１０２に相当する。また、分割部１３は、図２，６に示す第１，第２の実施形態におけるデータ分割部１３０に相当する。そして、送信部１４は、図２，６に示す第１，第２の実施形態における送信部１４０に相当する。 The communication device 10 corresponds to the data transmission source communication device 100 in the first embodiment shown in FIGS. 1 and 2 or the data transmission source communication device 102 in the second embodiment shown in FIG. The dividing unit 13 corresponds to the data dividing unit 130 in the first and second embodiments shown in FIGS. The transmission unit 14 corresponds to the transmission unit 140 in the first and second embodiments illustrated in FIGS.
　分割部１３は、一のデータを分割する。 The dividing unit 13 divides one data.
　送信部１４は、分割部１３によって分割されたデータを含む分割パケットを複数の無線通信回線のいずれかを用いて送信する。 The transmitting unit 14 transmits a divided packet including the data divided by the dividing unit 13 using any of a plurality of wireless communication lines.
　そして、送信部１４は、複数の無線通信回線のそれぞれの通信状況を示す通信品質情報に基づいて選択された無線通信回線を用いて分割パケットを送信する。 And the transmission part 14 transmits a division | segmentation packet using the radio | wireless communication line selected based on the communication quality information which shows each communication condition of several radio | wireless communication line.
　本実施形態によれば、送信部１４が、分割パケットを各々の通信状況に応じて選択された無線通信回線を用いて送信する。したがって、通信状況が良好な無線通信回線が用いられ、通信状況が不良な無線通信回線は用いられない。よって、今回送信される分割パケットが、無線通信回線の通信状況が不良であることにより適切に伝送先の通信装置によって受信されないという問題の発生を未然に防ぐことができる。 According to the present embodiment, the transmission unit 14 transmits the divided packet using the wireless communication line selected according to each communication state. Therefore, a wireless communication line with a good communication state is used, and a wireless communication line with a bad communication state is not used. Therefore, it is possible to prevent the occurrence of the problem that the divided packet transmitted this time is not properly received by the transmission destination communication device due to the poor communication state of the wireless communication line.
　以上、実施形態を参照して本願発明を説明したが、本願発明は上記実施形態に限定されるものではない。本願発明の構成や詳細には、本願発明のスコープ内で当業者が理解し得る様々な変更をすることができる。 The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.
　この出願は、２０１７年０３月１４日に出願された日本出願特願２０１７－０４８７９４を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2017-048794 filed on Mar. 14, 2017, the entire disclosure of which is incorporated herein.
　１０　　通信装置
　１３　　分割部
　１４、１４０－１～ｎ、２５０　　送信部
　１００、１０２　　データ伝送元通信装置
　１１０、２１０　　入出力ポート
　１２０　　バッファ
　１３０　　データ分割部
　１５０、２４０－１～ｎ　　受信部
　１６０　　送信制御部
　１７０、１７２　　分割制御部
　２００、２０２　　データ伝送先通信装置
　２３０　　データ結合部
　２６０、２６２　　受信情報生成部 DESCRIPTION OF SYMBOLS 10 Communication apparatus 13 Division | segmentation part 14,140-1 ~ n, 250 Transmission part 100,102 Data transmission origin communication apparatus 110,210 Input / output port 120 Buffer 130 Data division part 150,240-1-n Reception part 160 Transmission control part 170, 172 Division control unit 200, 202 Data transmission destination communication device 230 Data combination unit 260, 262 Reception information generation unit

Claims (8)

  1. 　一のデータを分割する分割手段と、
    　前記分割手段によって分割されたデータを含む分割パケットを複数の無線通信回線のいずれかを用いて送信する送信手段とを備え、
    　前記送信手段は、前記複数の無線通信回線のそれぞれの通信状況を示す通信品質情報に基づいて選択された無線通信回線を用いて前記分割パケットを送信する
    　ことを特徴とする通信装置。     Dividing means for dividing one data;
    Transmitting means for transmitting a divided packet including data divided by the dividing means using any of a plurality of wireless communication lines,
    The transmission device transmits the divided packet using a wireless communication line selected based on communication quality information indicating a communication status of each of the plurality of wireless communication lines.
  2. 　前記通信品質情報に基づいて、前記送信手段が用いる無線通信回線を選択する通信回線選択手段を含む
    　請求項１に記載の通信装置。     The communication apparatus according to claim 1, further comprising a communication line selection unit that selects a wireless communication line used by the transmission unit based on the communication quality information.
  3. 　前記通信回線選択手段は、前記通信品質情報が示す値と、所定の閾値との比較結果に基づいて、前記送信手段が用いる無線通信回線を選択する
    　請求項２に記載の通信装置。     The communication apparatus according to claim 2, wherein the communication line selection unit selects a radio communication line used by the transmission unit based on a comparison result between a value indicated by the communication quality information and a predetermined threshold value.
  4. 　前記通信品質情報は、前記複数の無線通信回線のそれぞれのＣＮＲの値を示す情報である
    　請求項１から請求項３のうちいずれか１項に記載の通信装置。     The communication apparatus according to any one of claims 1 to 3, wherein the communication quality information is information indicating a CNR value of each of the plurality of wireless communication lines.
  5. 　前記複数の無線通信回線のそれぞれに応じた送信手段が用意され、
    　前記分割手段は、選択された無線通信回線に応じて、前記一のデータを分割する
    　請求項１から請求項４のうちいずれか１項に記載の通信装置。     A transmission means corresponding to each of the plurality of wireless communication lines is prepared,
    The communication apparatus according to any one of claims 1 to 4, wherein the dividing unit divides the one data according to a selected wireless communication line.
  6. 　請求項１から請求項５のうちいずれか１項に記載の通信装置、および、
    　前記送信手段が送信した前記分割パケットを前記複数の無線通信回線を介して受信する受信手段と、
    　前記受信手段による前記分割パケットの受信に基づいて、前記通信品質情報を生成する情報生成手段とを含む受信側通信装置を備えた
    　ことを特徴とする通信システム。     The communication device according to any one of claims 1 to 5, and
    Receiving means for receiving the divided packets transmitted by the transmitting means via the plurality of wireless communication lines;
    A communication system comprising: a receiving-side communication device including information generating means for generating the communication quality information based on reception of the divided packet by the receiving means.
  7. 　一のデータを分割し、
    　複数の無線通信回線のうち、それぞれの通信状況を示す通信品質情報に基づいて選択された無線通信回線を用いて、分割された前記データを含む分割パケットを送信する
    　ことを特徴とする通信方法。     Split one data,
    A communication method comprising: transmitting a divided packet including the divided data using a wireless communication line selected based on communication quality information indicating each communication state among a plurality of wireless communication lines.
  8. 　送信された前記分割パケットを前記複数の無線通信回線を介して受信し、
    　前記分割パケットの受信に基づいて、前記通信品質情報を生成する
    　請求項７に記載の通信方法。     Receiving the transmitted divided packets via the plurality of wireless communication lines;
    The communication method according to claim 7, wherein the communication quality information is generated based on reception of the divided packet.
PCT/JP2018/009253 2017-03-14 2018-03-09 Communication device, communication system, and communication method WO2018168701A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004114609A1 (en) * 2003-06-18 2004-12-29 Nippon Telegraph And Telephone Corporation Radio packet communication method
JP2007060494A (en) * 2005-08-26 2007-03-08 Nippon Telegr & Teleph Corp <Ntt> Network system, transmitting side sorting device, packet communication method and packet communication program
JP2015050746A (en) * 2013-09-04 2015-03-16 沖電気工業株式会社 Packet communication device and system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004114609A1 (en) * 2003-06-18 2004-12-29 Nippon Telegraph And Telephone Corporation Radio packet communication method
JP2007060494A (en) * 2005-08-26 2007-03-08 Nippon Telegr & Teleph Corp <Ntt> Network system, transmitting side sorting device, packet communication method and packet communication program
JP2015050746A (en) * 2013-09-04 2015-03-16 沖電気工業株式会社 Packet communication device and system

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