WO2016185886A1 - Communication device, communication system, communication method and program - Google Patents

Communication device, communication system, communication method and program Download PDF

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Publication number
WO2016185886A1
WO2016185886A1 PCT/JP2016/063141 JP2016063141W WO2016185886A1 WO 2016185886 A1 WO2016185886 A1 WO 2016185886A1 JP 2016063141 W JP2016063141 W JP 2016063141W WO 2016185886 A1 WO2016185886 A1 WO 2016185886A1
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WIPO (PCT)
Prior art keywords
communication
transmission
reception
data
communication device
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PCT/JP2016/063141
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French (fr)
Japanese (ja)
Inventor
公也 加藤
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ソニー株式会社
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Publication of WO2016185886A1 publication Critical patent/WO2016185886A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements

Definitions

  • This technology relates to a communication device. More particularly, the present invention relates to a communication apparatus, a communication system and a communication method for performing communication using a body as a signal transmission medium, and a program for causing a computer to execute the method.
  • Non-Patent Document 1 is formulated as a standard specification.
  • data can be exchanged between a transmitting device and a plurality of receiving devices.
  • the transmitting device repeats association at short intervals and alternately performs data transmission and data reception with each of the plurality of receiving devices.
  • the time required for association for switching the connection to a plurality of receiving devices is an overhead.
  • association since association is frequently performed, communication performance may be deteriorated.
  • different TDSs may be assigned to a plurality of receiving devices, and data transmission and data reception may be performed simultaneously with each of the plurality of receiving devices within one Time-segment. It is done.
  • the transmitting device needs to perform data transmission / reception twice per 1 time-segment in the TDS assigned to each of the plurality of receiving devices. For this reason, it is assumed that the transmission / reception circuit is operated at high speed in the transmission device. In this case, the power consumption of the transmitting device increases.
  • the transmission / reception circuit is mounted twice in the transmission device. In this case, the mounting cost of the transmission device increases. For this reason, it may be difficult to achieve downsizing and low power consumption of the communication device.
  • This technology has been created in view of such a situation, and aims to appropriately perform communication using the body as a signal transmission medium.
  • the present technology has been made to solve the above-described problems, and a first aspect of the present technology is data transmission / reception timing with respect to a plurality of communication devices as communication partners in communication using a body as a signal transmission medium.
  • a communication method including a control unit that performs control to switch data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings, and a program for causing a computer to execute the method. Accordingly, there is an effect that data transmission / reception timings for a plurality of communication devices as communication partners are designated, and data transmission / reception timings for the plurality of communication devices are switched in accordance with the designated transmission / reception timings.
  • the control unit includes a first communication slot used for transmitting the data and a second communication slot used for receiving the data in a transmission / reception section configured by a plurality of communication slots.
  • each of the plurality of communication devices may be assigned in units of the transmission / reception sections. Accordingly, the first communication slot used for data transmission and the second communication slot used for data reception are assigned, and each of the plurality of communication devices is assigned in units of transmission / reception sections.
  • control unit may allocate the plurality of communication devices in units of the transmission / reception sections in order. This brings about the effect
  • control unit may identify a communication device assigned to the transmission / reception section to be transmitted / received based on the number of transmission / reception sections. This brings about the effect
  • control unit identifies a communication device assigned to the transmission / reception section to be transmitted / received based on a sequence number stored in a header of a data frame of data to be transmitted. You may do it. Accordingly, there is an effect that the communication device assigned to the transmission / reception section to be transmitted / received is identified based on the sequence number stored in the header of the data frame of the data to be transmitted.
  • the control unit includes the information for designating the transmission / reception timing in an Association frame and transmits the information to each of the plurality of communication devices, thereby changing the transmission / reception timing to the plurality of communication. You may make it notify to each of apparatus.
  • the information for designating the transmission / reception timing is included in the Association frame and transmitted to each of the plurality of communication devices, thereby providing an effect of notifying each of the plurality of communication devices of the transmission / reception timing.
  • the communication may be data exchange conforming to the ECMA-401 specification. This brings about the effect that data exchange conforming to the ECMA-401 specification is performed.
  • data is transmitted / received to / from the other communication device according to a transmission / reception timing designated by the other communication device serving as a communication partner.
  • a communication apparatus including a control unit that controls to perform the communication, a communication method thereof, and a program that causes a computer to execute the method.
  • the control unit includes a first communication slot used for receiving the data and a second communication slot used for transmitting the data in a transmission / reception section configured by a plurality of communication slots. Is received using the first communication slot in the transmission / reception section assigned to the communication device, and the data is transmitted using the second communication slot in the transmission / reception section. You may make it perform. As a result, data is received using the first communication slot in the transmission / reception section allocated to the own apparatus, and data is transmitted using the second communication slot in the transmission / reception section.
  • control unit may identify the transmission / reception section serving as a transmission / reception timing based on the number of the transmission / reception sections. This brings about the effect
  • control unit may specify the transmission / reception section serving as a transmission / reception timing based on a sequence number stored in a header of a data frame of received data. This brings about the effect
  • control unit may acquire the transmission / reception timing designated by the other communication device based on the information for designating the transmission / reception timing included in the Association frame. Good. Thereby, based on the information for designating the transmission / reception timing included in the Association frame, there is an effect of acquiring the transmission / reception timing designated by another communication apparatus.
  • a communication method therefor comprising: a transmission device that switches transmission / reception timing of the communication device; and a plurality of reception devices that transmit / receive data to / from the transmission device according to the transmission / reception timing specified by the transmission device in the communication And a program for causing a computer to execute the method.
  • the transmitting device designates data transmission / reception timings for a plurality of receiving devices, switches the data transmission / reception timings for the plurality of receiving devices according to the designated transmission / reception timings, and the receiving device is designated by the transmitting device. According to the transmission / reception timing, data is transmitted / received to / from the transmitting device.
  • 6 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology.
  • 12 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology. It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 100 to 102 in embodiment of this technique.
  • Embodiment Example of specifying data transmission / reception timings for a plurality of receiving devices and switching data transmission / reception timings for a plurality of receiving devices in accordance with the specified transmission / reception timings in communication using a body as a signal transmission medium
  • FIG. 1 is a block diagram illustrating a configuration example of a communication device 100 according to an embodiment of the present technology. Note that the configuration of the communication apparatuses 101 to 104 shown in FIG. 3 and the like is the same as that of the communication apparatus 100, and thus the description of the configuration of the communication apparatuses 101 to 104 is omitted.
  • the communication apparatus 100 is an example of a communication apparatus (for example, a human body communication apparatus) that performs communication using a body (for example, a human body or an animal body) as a signal transmission medium.
  • This communication (communication using the body as a signal transmission medium) is communication that can be performed when worn on the surface of the body (or close proximity (for example, the surface of clothes)).
  • the communication apparatus 100 performs communication using a human body as a signal transmission medium.
  • wearing on the surface (for example, skin surface) of a human body is shown.
  • 1-to-N communication is performed in communication using a human body as a signal transmission medium will be described.
  • the communication devices 100 to 104 can be devices that can be worn on the human body (or on the human body (clothes, hats, etc.)), for example.
  • the communication devices 100 to 104 can be smartphones, tablet terminals, headphones, earphones, wrist watches, wristbands, speakers, glasses, and blood pressure monitors.
  • the communication apparatus 100 includes an electrode 110, a transmission unit 120, a reception unit 130, a processing unit 140, and a storage unit 150.
  • the electrode 110 is in contact with (or in close proximity to) the surface 10 of the human body.
  • the transmission unit 120 generates a potential variation through the electrode 110 when the electrode 110 is in contact with the surface 10 of the human body. That is, the transmission unit 120 transmits the data provided from the information providing unit 141 to another communication device worn on the human body by generating a potential fluctuation through the electrode 110.
  • the receiving unit 130 detects potential fluctuations generated by other communication devices through the electrode 110. That is, the receiving unit 130 receives data transmitted from another communication device by detecting a potential fluctuation generated by the other communication device through the electrode 110. Then, the reception unit 130 supplies the received data to the information acquisition unit 142.
  • the transmission unit 120 and the reception unit 130 operate in a time division manner for each TDS (Time Division Division Slot).
  • the processing unit 140 is connected to the transmission unit 120, the reception unit 130, and the storage unit 150.
  • the processing unit 140 includes units (information providing unit 141, information acquiring unit 142, and control unit 143) for processing transmission / reception signals.
  • the information providing unit 141 provides the transmission unit 120 with data to be transmitted to another communication device based on the control of the control unit 143.
  • the information acquisition unit 142 acquires various types of information included in the data received by the reception unit 130 from other communication devices based on the control of the control unit 143 and supplies the acquired information to the control unit 143.
  • the control unit 143 controls the operation content of the communication apparatus 100 based on the control program. For example, the control unit 143 determines the generation of the timing at which the communication apparatus 100 operates and the operation content for each TDS. For example, the control unit 143 controls data transmission / reception. For example, the control unit 143 extracts data from the storage unit 150 or stores data in the storage unit 150.
  • control unit 143 when the communication apparatus 100 operates as a transmission device, the control unit 143 performs control to specify data transmission / reception timings for a plurality of reception devices in communication using the body as a signal transmission medium. And the control part 143 performs control which switches the transmission / reception timing of the data with respect to a some receiving apparatus according to the designated transmission / reception timing.
  • control unit 143 performs data communication with the transmitting device according to the transmission / reception timing designated by the transmitting device in communication using the body as a signal transmission medium. Control to send and receive.
  • Patent Document 1 is established as a standard specification for communication using a human body as a signal transmission medium. Therefore, the specification will be described.
  • the specification defines a communication device (Talker) that intends to start communication spontaneously and a communication device (Listener) that starts communication in response to the Talker.
  • a communication device that intends to start communication spontaneously
  • a communication device that starts communication in response to the Talker.
  • time slots called TDS1 to TDS8 are defined on the time axis
  • a superframe called Time-segment is composed of eight TDSs.
  • the specification also defines two types of communication. One is a data exchange method (Full duplex communication) between communication devices. The other is a data broadcasting communication system (Broadcast communication).
  • the Talker and Listener transmit data frames alternately using one TDS during one Time-segment.
  • 2 bits of Sequence number are added to the header portion, and 16 bits of CRC (Cyclic Redundancy Check) are added to the footer portion. If the frame transmitted by the communication partner can be received correctly, the sequence number described in the frame of the communication partner is incremented and added to the frame to be transmitted by the own apparatus.
  • ACK acknowledgement
  • NACK Negative ACKnowledgement
  • Talker transmits a frame using one TDS during 1 Time-segment, and Listener receives it. Note that the listener does not transmit to Talker.
  • connection procedure is provided for the Talker to notify the listener in advance of communication information and to obtain an agreement.
  • the information related to this communication is, for example, information regarding which of the Full duplex COMMUNICATION and the Broadcast COMMUNICATION will start communication and which TDS is used for communication.
  • Talker determines a communication method and a TDS number, and transmits a frame (Association Request 1) in which such information is described as a connection request. Upon receiving this, the Listener returns, as a request response, Association Response 1 in which the number generated by itself is randomly described.
  • the Talker that has received the Association Response 1 transmits an Association Request 2 to which the same random number as the Association Response 1 is added for connection confirmation. Upon receiving this, the Listener returns Association Response 2 as a confirmation response. These exchanges complete the connection procedure.
  • This specification is characterized in that, as a physical property, when a plurality of communication devices transmit simultaneously with the same TDS, interference occurs and communication cannot be performed normally. For this reason, it is specified that one TDS is assigned to one communication apparatus, and a TDS number is added to the data frame as a field for identifying a transmitting device.
  • the receiving device compares the TDS number in the received frame with the TDS used by the transmitting device notified by the Association, and identifies whether or not it is transmitted to the own device. Can do. Note that there is no destination address in the header of the received frame.
  • Association Request 2 describes a random number for identifying the listener. For this reason, it is possible to identify whether or not the received listener is transmitted to the own apparatus without depending on the TDS.
  • the communication device A is a portable audio player
  • the communication device B is a left earphone
  • the communication device C is a right earphone.
  • the communication device A performs streaming transmission of different audio data to the communication device B and the communication device C, and receives ACK from each of the communication device B and the communication device C.
  • the following (A1) and (A2) are considered as operations of the communication apparatus A.
  • (A1) Association is repeated at short intervals, and data transmission and data reception are alternately performed with each of the communication apparatuses B and C.
  • a different TDS is assigned to each of the communication device B and the communication device C, and data transmission and data reception are performed simultaneously with each of the communication device B and the communication device C within one Time-segment.
  • the communication device A needs to transmit and receive data twice per time-segment in the TDS assigned to the communication device B and the communication device C, respectively. For this reason, it is assumed that the communication apparatus A operates the transmission / reception circuit at high speed. In this case, the power consumption of the communication device A increases. Alternatively, it is assumed that the communication device A is implemented with double transmission / reception circuits. In this case, the mounting cost of the communication device A increases. For this reason, it may be difficult to achieve downsizing and low power consumption of the communication device.
  • a communication device and a plurality of communication devices can be connected to a plurality of communication devices without reducing the communication performance and the number of accommodated devices.
  • the example which can communicate with the communication apparatus of a stand is shown.
  • a communication example of data exchange conforming to the ECMA-401 specification is shown as communication using the body as a signal transmission medium.
  • FIG. 2 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
  • FIG. 2 shows an example in which the communication device 100 is a Talker and the communication device 101 and the communication device 102 are Listeners.
  • FIG. 2 illustrates an example in which the communication apparatus 100 transmits different data to the communication apparatus 101 and the communication apparatus 102 and receives data from each of the communication apparatus 101 and the communication apparatus 102.
  • the square on the horizontal axis corresponding to each communication device represents TDS, and the number in the square represents the TDS number.
  • a thick square represents a TDS that is a transmission / reception timing.
  • the TDS, the TDS number, and the like are similarly expressed for each of the following drawings.
  • FIG. 2 illustrates an example in which the communication apparatus 100 transmits data using TDS2, and one of the communication apparatus 101 and the communication apparatus 102 transmits a data frame (corresponding to ACK) using TDS6.
  • a data frame corresponding to ACK is represented by ACK characters.
  • B1 An identification method for identification based on Time-segment starting from Association Request 2.
  • B2 An identification method for identification based on the value of Sequence number included in the data frame.
  • the communication device 100 determines which operation (B1) or (B2) is performed, and notifies the communication device 101 and the communication device 102.
  • This notification can be performed, for example, by newly defining (or adding) a field indicating which operation (B1) or (B2) described above is to be performed in the existing Association Request 2.
  • any 4 bits of table4 described in P13 of Non-Patent Document 1 can be defined as a new field.
  • the communication apparatus 100 stores information indicating which operation (B1) or (B2) described above is performed in the newly defined field, and each of the communication apparatus 101 and the communication apparatus 102 The notification can be made by sending to.
  • control unit 143 of the communication device 100 includes the information for designating the transmission / reception timing in the association frame and transmits the information to each of the plurality of receiving devices, thereby transmitting the transmission / reception timing to each of the plurality of receiving devices. You can be notified.
  • the communication device 101 and the communication device 102 read the information stored in the newly defined field, and return Association Response 2 to the communication device 100. As a result, it is assumed that the communication device 100, the communication device 101, and the communication device 102 have agreed to perform any of the operations (B1) or (B2) described above. Thereafter, the communication device 100 to the communication device 102 start the agreed operation.
  • control units of the communication apparatus 101 and the communication apparatus 102 can acquire the transmission / reception timing designated from the communication apparatus 100 based on the information for designating the transmission / reception timing included in the Association frame.
  • the communication device 100 transmits a data frame to the communication device 101 at the timing of TDS2 (201).
  • the communication apparatus 101 transmits a data frame (corresponding to ACK) at the timing of TDS6 (202).
  • the communication apparatus 100 transmits a data frame to the communication apparatus 102 at the timing of TDS2 (203).
  • the communication apparatus 102 transmits a data frame (corresponding to ACK) at the timing of TDS6 (204).
  • the communication apparatus 100 transmits a data frame to the communication apparatus 101 at the timing of TDS2 (205).
  • the communication apparatus 101 transmits a data frame (corresponding to ACK) at the timing of TDS6 (206).
  • data frames (corresponding to data and ACK) are repeatedly exchanged between the communication device 100, the communication device 101, and the communication device 102.
  • FIG. 3 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 104 according to the embodiment of the present technology.
  • FIG. 3 shows an example in which the communication device 100 is a Talker and the communication devices 101 to 104 are Listeners.
  • FIG. 3 illustrates an example in which the communication apparatus 100 transmits different data to the communication apparatuses 101 to 104 and receives confirmation response data (corresponding to ACK) from each of the communication apparatuses 101 to 104.
  • FIG. 3 shows an example in which the operation (B1) described above is performed.
  • the communication apparatus 100 includes the counter TS-T in the control unit 143.
  • the communication apparatuses 101 to 104 are provided with a counter TS-L in each control unit (corresponding to the control unit 143 shown in FIG. 1).
  • the communication device 100 transmits an association request 2 to each of the communication devices 101 to 104 according to the above-described determination content (211, 213, 215, 217). That is, the communication apparatus 100 transmits Association Request 2 to each of the communication apparatuses 101 to 104 at a timing according to the determination content described above (211, 213, 215, 217).
  • the communication device 100 resets the value of TS-T to 0 at the time (211) when the association request 2 is transmitted to the communication device 101. Thereafter, the communication device 100 increases the value of TS-T by 1 each time the Time-segment is changed.
  • the communication devices 101 to 104 receive the association request 2 addressed to itself. Further, the communication apparatuses 101 to 104 reset the value of TS-L to 0 at the time (212, 214, 216, 218) when the response 2 is returned from Association Response2. Thereafter, the communication apparatuses 101 to 104 increase the value of TS-L by 1 each time the Time-segment is changed.
  • bit width and maximum value of TS-T and TS-L may be stored in the newly defined field described above.
  • the control units (corresponding to the control unit 143 shown in FIG. 1) of the communication devices 101 to 104 receive data through the information acquisition unit (corresponding to the information acquisition unit 142 shown in FIG. 1), and the information providing unit The confirmation response is transmitted through (corresponding to the information providing unit 141 shown in FIG. 1).
  • FIG. 4 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology.
  • FIG. 4 shows an example in which the communication device (listener) of the communication device 100 is the communication devices 101 to 104.
  • the control unit 143 of the communication device 100 performs a reception process for receiving the Association Response 1 from the communication devices 101 to 104 (step S801). That is, the control unit 143 of the communication device 100 causes the reception unit 130 to receive the association response 1 from the communication devices 101 to 104. Then, the control unit 143 of the communication apparatus 100 acquires the Association Response 1 from the information acquisition unit 142.
  • step S802 the control unit 143 of the communication device 100 performs time-segment assignment (step S802).
  • TS-T is assigned to the communication apparatus 103.
  • the control unit 143 of the communication apparatus 100 performs a transmission process of transmitting a data frame to the target communication apparatus (step S805). That is, the control unit 143 of the communication device 100 causes the information providing unit 141 to output a data frame for the target communication device to the transmission unit 120, and causes the transmission unit 120 to transmit to the target communication device (step S805). In this case, the control unit 143 of the communication device 100 causes the data frame to be transmitted to the target communication device at the assigned TDS timing.
  • the receiving unit 130 of the communication device 100 receives a data frame from the target communication device (step S806).
  • the control unit 143 of the communication apparatus 100 receives a data frame from the target communication apparatus at the assigned TDS timing.
  • the control unit 143 of the communication device 100 acquires a data frame from the target communication device from the information acquisition unit 142 (step S806).
  • control unit 143 of the communication device 100 increments the counter TS-T (step S807). Subsequently, the control unit 143 of the communication apparatus 100 determines whether or not the end of communication is instructed (step S808). If the end of communication is instructed (step S808), the data communication processing operation ends. If the end of communication is not instructed (step S808), the process returns to step S804.
  • the control unit 143 of the communication device 100 performs a transmission process of transmitting the Association Request 2 for the target communication device (step S809).
  • the control unit 143 of the communication device 100 causes the Association Request 2 to be transmitted to the target communication device at the timing of the assigned TDS.
  • the receiving unit 130 of the communication device 100 performs a reception process of receiving the Association Response 2 from the target communication device (step S810).
  • the control unit 143 of the communication device 100 receives the Association Response 2 from the target communication device at the assigned TDS timing.
  • the control unit 143 of the communication device 100 acquires Association Response 2 from the target communication device from the information acquisition unit 142 (step S810).
  • steps S802 to S807 are an example of a control procedure described in the claims.
  • control unit 143 of the communication apparatus 100 can perform control for designating data transmission / reception timings for a plurality of receiving devices in communication using the body as a signal transmission medium. And the control part 143 of the communication apparatus 100 can perform control which switches the transmission / reception timing of the data with respect to a some receiving apparatus according to the designated transmission / reception timing.
  • the control unit 143 of the communication device 100 receives a first communication slot used for data transmission and data reception in a transmission / reception section (Time-segment) configured by a plurality of communication slots (TDS).
  • the second communication slot to be used is assigned.
  • the control unit 143 of the communication device 100 assigns each of the plurality of receiving devices in units of transmission / reception sections (Time-segments).
  • the control unit 143 of the communication apparatus 100 can assign a plurality of receiving devices in order in units of transmission / reception sections (Time-segments). Accordingly, the first communication slot and the second communication slot can be shared among a plurality of receiving devices.
  • control unit 143 of the communication apparatus 100 can identify the receiving device assigned to the transmission / reception section (Time-segment) to be transmitted / received based on the number of transmission / reception sections (Time-segment).
  • FIG. 5 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology.
  • FIG. 5 shows an example in which communication is performed between the communication device 100 (Talker) and the communication devices 101 to 104 (Listener).
  • the control unit (corresponding to the control unit 143 shown in FIG. 1) of the communication apparatus 101 performs a transmission process of transmitting Association Response 1 to the communication apparatus 100 (step S821).
  • the control unit of the communication apparatus 101 transmits Association Response 1 for the communication apparatus 100 at the assigned TDS timing.
  • the control unit of the communication apparatus 101 performs a reception process for receiving the Association Request 2 from the communication apparatus 100 (step S822).
  • the control unit of the communication apparatus 101 receives the Association Request 2 from the communication apparatus 100 at the assigned TDS timing.
  • the control part of the communication apparatus 101 acquires Association Request2 from the communication apparatus 100 (step S822).
  • control unit of the communication apparatus 101 determines whether or not the reception of the Association Request 2 from the communication apparatus 100 is successful (step S823). If the reception fails (step S823), the process returns to step S822, and Association Request 2 from the communication device 100 is received again.
  • control unit of the communication apparatus 101 performs a transmission process for transmitting the Association Response 2 to the communication apparatus 100 (step S825).
  • the control unit of the communication apparatus 101 transmits an association response 2 to the communication apparatus 100 at the assigned TDS timing.
  • control unit of the communication apparatus 101 increments the counter TS-L (step S826).
  • the control unit of the communication apparatus 101 performs a reception process of receiving a data frame from the communication apparatus 100 (step S829). In this case, the control unit of the communication apparatus 101 receives the data frame from the communication apparatus 100 at the assigned TDS timing.
  • control unit of the communication apparatus 101 determines whether or not the data frame from the communication apparatus 100 has been successfully received (step S830). If the reception fails (step S830), the process returns to step S826.
  • step S830 the control unit of the communication apparatus 101 performs a transmission process of transmitting a data frame (corresponding to ACK) to the communication apparatus 100 (step S831). In this case, the control unit of the communication apparatus 101 transmits a data frame (corresponding to ACK) to the communication apparatus 100 at the assigned TDS timing.
  • control unit of the communication apparatus 101 determines whether or not the end of communication is instructed (step S832). If the end of communication is instructed (step S832), the data communication processing operation ends. If the end of communication is not instructed (step S832), the process returns to step S826.
  • control unit of the communication apparatus 101 can perform control to transmit / receive data to / from the transmission device in accordance with the transmission / reception timing designated by the transmission device in communication using the body as a signal transmission medium. .
  • a transmission / reception section (Time-segment) configured by a plurality of communication slots (TDS)
  • TDS time-segment
  • a first communication slot used for data reception and a second communication slot used for data transmission are allocated. It has been.
  • the control unit of the communication apparatus 101 receives data using the first communication slot in the transmission / reception section assigned to the communication apparatus 101, and transmits data using the second communication slot in the transmission / reception section. Do.
  • control unit of the communication apparatus 101 can specify a transmission / reception section (Time-segment) that is a transmission / reception timing based on the number of transmission / reception sections (Time-segment).
  • FIG. 6 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
  • FIG. 6 shows an example in which the communication device 100 is a Talker and the communication device 101 and the communication device 102 are Listeners.
  • FIG. 6 illustrates an example in which the communication apparatus 100 transmits different data to the communication apparatus 101 and the communication apparatus 102 and receives an acknowledgment (ACK) from each of the communication apparatus 101 and the communication apparatus 102.
  • FIG. 6 shows an example in which the above-described operation (B2) is performed.
  • FIG. 6 shows an operation example when reception in each communication device is normally performed without failure.
  • the communication apparatus 100 includes a state variable SEQ-T in the control unit 143.
  • Communication device 101 and communication device 102 are provided with state variable SEQ-L in their respective control units (corresponding to control unit 143 shown in FIG. 1).
  • the value of the Sequence number is set in the state variable SEQ-T when the Sequence number to be added to the data frame transmitted by the communication apparatus 100 is determined.
  • the value of the Sequence number described in the data frame is set in the state variable SEQ-L.
  • the communication device 100 transmits different Association Request 2 to the communication device 101 and the communication device 102 in accordance with the determination content described above (241, 243).
  • control unit 143 of the communication apparatus 100 operates by switching data to be transmitted through the information providing unit 141 according to the value of SEQ-T.
  • each control unit of the communication device 101 and the communication device 102 needs to receive a data frame from the communication device 100 and acquire a sequence number in all time-segments in order to update the SEQ-L included therein. There is. However, when the communication device 101 and the communication device 102 fail to receive the data frame from the communication device 100, the SEQ-L of the own device cannot be updated. In this case, NACK is transmitted regardless of the value of SEQ-L.
  • FIGS. 7 and 8 show examples of the retransmission method performed when the data frame transmitted by the communication apparatus of the communication partner cannot be correctly received.
  • FIG. 7 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
  • the communication device 100 receives the data frame (corresponding to NACK) (254). In this case, the communication device 100 determines that the communication device 101 has returned NACK, and transmits the same data frame again (255).
  • the communication apparatus 100 fails to receive (256) the data frame transmitted by the communication apparatus 101. In this case, the communication apparatus 100 transmits again the same data frame that was transmitted to the communication apparatus 101 immediately before (257).
  • FIG. 8 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
  • communication with retransmission control is possible by identifying the communication device 101 and the communication device 102 based on the sequence number.
  • FIG. 9 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology.
  • FIG. 9 illustrates an example in which the communication device 101 and the communication device 102 are communication partners (listeners) of the communication device 100.
  • control unit 143 of the communication device 100 assigns a sequence number to each communication device and makes an agreement by association with each communication device (step S841).
  • the transmission sequence number means a sequence number included in the data frame to be transmitted.
  • control unit 143 of the communication apparatus 100 updates the state variable SEQ-T to the value of the transmission sequence number (step S843).
  • the control unit 143 of the communication apparatus 100 causes the data frame to be transmitted to the communication apparatus 101 at the assigned TDS timing.
  • control unit 143 of the communication device 100 performs reception processing for receiving a data frame from the communication device 101 (step S846).
  • the control unit 143 of the communication apparatus 100 receives the data frame from the communication apparatus 101 at the assigned TDS timing.
  • the control unit 143 of the communication device 100 determines whether or not the data frame from the communication device 101 has been successfully received (step S847). If the reception has failed (step S847), the process returns to step S845.
  • the reception sequence number means a sequence number included in the data frame that has been successfully received.
  • step S848 If the received sequence number is not (01) b (step S848), it is assumed that the communication apparatus 101 has failed to receive the data frame, and the process returns to step S845.
  • control unit 143 of the communication device 100 determines whether or not the end of communication is instructed (step S851). If the end of communication is instructed (step S851), the data communication processing operation ends. If the end of communication is not instructed (step S851), the process returns to step S843.
  • step S844 the control unit 143 of the communication apparatus 100 transmits a data frame to the communication apparatus 102. Transmission processing is performed (step S852). In this case, the control unit 143 of the communication device 100 causes a data frame to be transmitted to the communication device 102 at the assigned TDS timing.
  • control unit 143 of the communication device 100 performs a reception process of receiving a data frame from the communication device 102 (step S853).
  • the control unit 143 of the communication apparatus 100 receives the data frame from the communication apparatus 102 at the assigned TDS timing.
  • the control unit 143 of the communication device 100 determines whether or not the data frame from the communication device 102 has been successfully received (step S854). If the reception has failed (step S854), the process returns to step S852.
  • step S855 If the received sequence number is not (11) b (step S855), it is assumed that the communication apparatus 102 has failed to receive the data frame, and the process returns to step S852.
  • control unit 143 of the communication device 100 receives the receiving device assigned to the transmission / reception section (Time-segment) to be transmitted / received based on the sequence number stored in the header of the data frame of the data to be transmitted. Can be specified.
  • FIG. 10 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology.
  • FIG. 10 illustrates an example in which communication is performed between the communication device 100 (Talker), the communication device 101, and the communication device 102 (Listener).
  • control unit corresponding to the control unit 143 shown in FIG. 1 makes an agreement with the communication apparatus 100 by association (step S861).
  • control unit of the communication apparatus 101 performs reception processing for receiving a data frame from the communication apparatus 100 (step S862).
  • the control unit of the communication apparatus 101 receives the data frame from the communication apparatus 100 at the assigned TDS timing.
  • the control part of the communication apparatus 101 acquires the data frame from the communication apparatus 100 (step S862).
  • the control unit of the communication device 101 determines whether or not the data frame has been successfully received from the communication device 100 (step S863). If the reception is successful (step S863), the control unit of the communication apparatus 101 updates the state variable SEQ-L to the value of the reception sequence number (step S864).
  • the reception sequence number means a sequence number included in the data frame that has been successfully received.
  • control unit of the communication apparatus 101 determines whether or not the end of communication is instructed (step S869). If the end of communication is instructed (step S869), the data communication processing operation ends. If the end of communication is not instructed (step S869), the process returns to step S862.
  • the transmission sequence number means a sequence number included in the data frame to be transmitted.
  • control unit of the communication apparatus 101 performs a transmission process for transmitting a data frame (corresponding to ACK) to the communication apparatus 100 (step S868).
  • control unit of the communication apparatus 101 transmits a data frame (corresponding to ACK) to the communication apparatus 100 at the assigned TDS timing.
  • control unit of the communication apparatus 101 performs a transmission process of transmitting a data frame (corresponding to NACK) to the communication apparatus 100 (step S871).
  • control unit of the communication apparatus 101 transmits a data frame (corresponding to NACK) to the communication apparatus 100 at the assigned TDS timing.
  • steps S861 to S868, S870, and S871 are examples of the control procedure described in the claims.
  • control unit of the communication apparatus 101 can specify the transmission / reception section (Time-segment) that is the transmission / reception timing based on the sequence number stored in the header of the data frame of the received data.
  • different data can be exchanged between a single Talker and a plurality of listeners using a common slot. That is, two communication slots can be shared by a plurality of communication devices, and the number of accommodated units can be increased as compared with the case where separate slots are used.
  • the communication slot can be used in a time-sharing manner among a plurality of communication devices, and 1-to-N communication is possible without requiring a communication device switching procedure.
  • an association procedure for the Talker to switch the listener becomes unnecessary, and the communication performance can be improved.
  • the communication devices 100 to 104 can be applied to devices used in each field. For example, it is assumed that when a person wears earphones in both ears, the input destination of the earphone is changed according to a device (for example, a smartphone or a tablet terminal) that the person takes. In this case, the output to the earphone can be performed quickly and accurately according to the device picked up.
  • a device for example, a smartphone or a tablet terminal
  • the present invention can be applied to medical devices that are worn on the human body, devices that are mounted on automobiles, and devices that are installed at ticket gates of stations.
  • Devices mounted on automobiles are, for example, devices that detect the position of a seat on which a person is sitting, and devices that detect the state of a person when a handle is held.
  • the device installed in the ticket gate of the station is a device that performs some kind of authentication when touched by a human body, for example.
  • the present invention can be applied to equipment used in the agricultural field (for example, a terminal of a cow management system). Similarly, for example, it can be applied to each device used in the sports field, the medical field, and the like.
  • a device to be attached to a body other than the human body for example, animals such as cows, horses, dogs and cats.
  • a body other than the human body for example, animals such as cows, horses, dogs and cats.
  • the apparatus with which the several body for example, a human body and a cow's body is mounted
  • worn An example of this is shown in FIG.
  • FIG. 11 is a diagram illustrating a communication example when data is exchanged between the communication devices 500, 510, 520, and 530 according to the embodiment of the present technology.
  • FIG. 11 shows an example in which the communication device 500 is a Talker and the communication devices 510, 520, and 530 are Listeners.
  • the communication device 500 corresponds to the communication device 100
  • the communication devices 510, 520, and 530 correspond to the communication devices 101 to 104.
  • FIG. 11 shows an example in which the person 20 possesses the communication device 500 and the communication devices 510, 520, and 530 are attached to the cow.
  • the communication device 500 is an information processing device such as a smartphone or a tablet terminal.
  • the communication devices 510, 520, and 530 are sensors that perform various measurements related to cows.
  • This sensor can be, for example, a sensor device (pH meter) capable of measuring pH (potential hydrogen, power hydrogen of hydrogen) (device attached to a cow's stomach as a communication device).
  • a sensor device pH meter
  • it can be set as the sensor apparatus (cow thermometer) (apparatus attached to a cow as a communication apparatus) which can measure the body temperature of a cow.
  • the communication devices 510, 520, and 530 use communication using each sensor information (including identification information for identifying a cow) acquired by each sensor as a signal transmission medium of the body (human body and cow body). Then, it can be transmitted to the communication device 500.
  • each sensor information is exchanged between the communication device 500 and the communication devices 510, 520, and 530 according to the transmission / reception timing described above. It can be carried out.
  • the control part (equivalent to the control part 143 shown in FIG. 1) of the communication apparatus 500 can display the identification information (for example, name) for identifying each received sensor information and a cow on the display part 501. .
  • the identification information for example, name
  • each sensor information and the name of the cow can be displayed on the display unit 501 of the communication device 500 possessed by the left hand.
  • FIG. 11 shows an example in which three communication devices are attached to one cow for ease of explanation, but the same applies to the case where two or four or more communication devices are attached to one cow. can do.
  • the processing procedure described in the above embodiment may be regarded as a method having a series of these procedures, and a program for causing a computer to execute these series of procedures or a recording medium storing the program. You may catch it.
  • a recording medium for example, a CD (Compact Disc), an MD (MiniDisc), a DVD (Digital Versatile Disc), a memory card, a Blu-ray disc (Blu-ray (registered trademark) Disc), or the like can be used.
  • this technique can also take the following structures.
  • control is performed for specifying transmission / reception timings of data for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the specified transmission / reception timings.
  • a communication device comprising a control unit for performing.
  • the control unit allocates a first communication slot used to transmit the data and a second communication slot used to receive the data in a transmission / reception section configured by a plurality of communication slots, and the plurality of communication devices The communication device according to (1), wherein each of the above is assigned in units of the transmission / reception sections.
  • the said control part is a communication apparatus as described in said (2) which allocates these communication apparatuses in order of the said transmission / reception area in order.
  • the said control part is a communication apparatus as described in said (2) or (3) which specifies the communication apparatus allocated to the said transmission / reception area used as the object of transmission / reception based on the number of the said transmission / reception areas.
  • the control unit identifies a communication device assigned to the transmission / reception section to be transmitted / received based on a sequence number stored in a header in a data frame of data to be transmitted. The communication device described.
  • the control unit notifies the transmission / reception timing to each of the plurality of communication devices by including information for designating the transmission / reception timing in an association frame and transmitting the information to each of the plurality of communication devices.
  • the communication apparatus according to any one of (1) to (6), wherein the communication is data exchange based on ECMA-401 specifications.
  • communication having a control unit that controls transmission / reception of data to / from another communication device in accordance with transmission / reception timing designated by another communication device serving as a communication partner apparatus.
  • the control unit In the transmission / reception section configured by a plurality of communication slots, the control unit is assigned with a first communication slot used for receiving the data and a second communication slot used for transmitting the data.
  • the said control part is a communication apparatus as described in said (9) which specifies the said transmission / reception area used as transmission / reception timing based on the number of the said transmission / reception areas.
  • the said control part is a communication apparatus as described in said (9) which specifies the said transmission / reception area used as transmission / reception timing based on the sequence number stored in the header in the data frame of the received data. (12) The said control part acquires the transmission / reception timing designated from the said other communication apparatus based on the information for designating the said transmission / reception timing contained in an Association frame, In any one of said (8) to (11) Communication equipment.
  • a transmission device that designates data transmission / reception timing for a plurality of reception devices, and switches data transmission / reception timing for the plurality of reception devices according to the designated transmission / reception timing;
  • a communication system comprising a plurality of receiving devices that transmit / receive data to / from the transmitting device in accordance with transmission / reception timing designated by the transmitting device.
  • a communication method comprising: (15) In communication using a body as a signal transmission medium, a communication method comprising a control procedure for transmitting / receiving data to / from another communication device according to a transmission / reception timing designated by another communication device serving as a communication partner.
  • a control procedure for designating data transmission / reception timings for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings A program that causes a computer to execute.
  • Electrode 100 to 104, 500, 510, 520, 530 Communication device 110 Electrode 120 Transmission unit 130 Reception unit 140 Processing unit 141 Information providing unit 142 Information acquisition unit 143 Control unit 150 Storage unit 501 Display unit

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Abstract

The objective of the present invention is to perform communication appropriately, using a body as a signal transmission medium. This communication device is provided with a control unit. The control unit with which the communication device is provided performs control to specify the timing of transmission and reception of data to or from a plurality of communication devices serving as communication partners, in communication in which a body is used as a signal transmission medium. Further, the control unit with which the communication device is provided performs communication by switching the timing of the transmission and reception of data to or from the plurality of communication devices, in accordance with the specified transmission and reception timing (the timing of transmission and reception of data to or from the plurality of communication devices serving as communication partners).

Description

通信装置、通信システム、通信方法およびプログラムCOMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM
　本技術は、通信装置に関する。詳しくは、体を信号の伝送媒体とする通信を行う通信装置、通信システムおよび通信方法ならびに当該方法をコンピュータに実行させるプログラムに関する。 This technology relates to a communication device. More particularly, the present invention relates to a communication apparatus, a communication system and a communication method for performing communication using a body as a signal transmission medium, and a program for causing a computer to execute the method.
　従来、人体を信号の伝送媒体とする通信を利用して情報のやり取りを行う通信技術が存在する。例えば、非特許文献１が標準仕様として策定されている。 Conventionally, there is a communication technology for exchanging information using communication using a human body as a signal transmission medium. For example, Non-Patent Document 1 is formulated as a standard specification.
　上述の従来技術では、送信機器と複数の受信機器との間でそれぞれデータ交換を行うことができる。 In the above-described conventional technology, data can be exchanged between a transmitting device and a plurality of receiving devices.
　このように、データ交換を行う場合には、例えば、送信機器が、短い間隔でＡｓｓｏｃｉａｔｉｏｎを繰り返し、複数の受信機器のそれぞれと交互にデータ送信およびデータ受信を行うことが考えられる。しかしながら、この場合には、複数の受信機器への接続を切り替えるためのＡｓｓｏｃｉａｔｉｏｎに要する時間がオーバーヘッドとなる。このように、Ａｓｓｏｃｉａｔｉｏｎが頻繁に行われるため、通信の性能が悪化するおそれがある。 Thus, when data exchange is performed, for example, it is conceivable that the transmitting device repeats association at short intervals and alternately performs data transmission and data reception with each of the plurality of receiving devices. However, in this case, the time required for association for switching the connection to a plurality of receiving devices is an overhead. As described above, since association is frequently performed, communication performance may be deteriorated.
　また、上述したデータ交換を行う場合には、例えば、複数の受信機器にそれぞれ異なるＴＤＳを割り当て、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔ内で、複数の受信機器のそれぞれと同時にデータ送信およびデータ受信を行うことが考えられる。この場合には、例えば、送信機器は、複数の受信機器にそれぞれ割り当てたＴＤＳにおいて、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔあたり２度のデータ送受信を行う必要がある。このため、送信機器において送受信回路を高速に動作させることが想定される。この場合には、送信機器の消費電力が増加する。または、送信機器において送受信回路を二重に実装することが想定される。この場合には、送信機器の実装コストが増加する。このため、通信装置の小型化や低消費電力を実現することが困難となるおそれがある。 In addition, when performing the above-described data exchange, for example, different TDSs may be assigned to a plurality of receiving devices, and data transmission and data reception may be performed simultaneously with each of the plurality of receiving devices within one Time-segment. It is done. In this case, for example, the transmitting device needs to perform data transmission / reception twice per 1 time-segment in the TDS assigned to each of the plurality of receiving devices. For this reason, it is assumed that the transmission / reception circuit is operated at high speed in the transmission device. In this case, the power consumption of the transmitting device increases. Alternatively, it is assumed that the transmission / reception circuit is mounted twice in the transmission device. In this case, the mounting cost of the transmission device increases. For this reason, it may be difficult to achieve downsizing and low power consumption of the communication device.
　また、送信機器と複数の受信機器のそれぞれとが通信を行う場合に、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔ内の計８ＴＤＳのうち、半分の４ＴＤＳを占有することになる。このため、同一の体に装着することができる通信装置の台数が低下するおそれがある。 In addition, when the transmitting device and each of a plurality of receiving devices communicate, half of 4TDSs out of a total of 8 TDSs in one Time-segment will be occupied. For this reason, there is a possibility that the number of communication devices that can be mounted on the same body is reduced.
　本技術はこのような状況に鑑みて生み出されたものであり、体を信号の伝送媒体とする通信を適切に行うことを目的とする。 This technology has been created in view of such a situation, and aims to appropriately perform communication using the body as a signal transmission medium.
　本技術は、上述の問題点を解消するためになされたものであり、その第１の側面は、体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、上記複数の通信装置に対するデータの送受信タイミングを切り替える制御を行う制御部を具備する通信装置およびその通信方法ならびに当該方法をコンピュータに実行させるプログラムである。これにより、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、その指定された送受信タイミングに従って、複数の通信装置に対するデータの送受信タイミングを切り替えるという作用をもたらす。 The present technology has been made to solve the above-described problems, and a first aspect of the present technology is data transmission / reception timing with respect to a plurality of communication devices as communication partners in communication using a body as a signal transmission medium. And a communication method including a control unit that performs control to switch data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings, and a program for causing a computer to execute the method. Accordingly, there is an effect that data transmission / reception timings for a plurality of communication devices as communication partners are designated, and data transmission / reception timings for the plurality of communication devices are switched in accordance with the designated transmission / reception timings.
　また、この第１の側面において、上記制御部は、複数の通信スロットにより構成される送受信区間において、上記データの送信に使用する第１通信スロットと、上記データの受信に使用する第２通信スロットとを割り当て、上記複数の通信装置のそれぞれを上記送受信区間単位で割り当てるようにしてもよい。これにより、データの送信に使用する第１通信スロットと、データの受信に使用する第２通信スロットとを割り当て、複数の通信装置のそれぞれを送受信区間単位で割り当てるという作用をもたらす。 In the first aspect, the control unit includes a first communication slot used for transmitting the data and a second communication slot used for receiving the data in a transmission / reception section configured by a plurality of communication slots. And each of the plurality of communication devices may be assigned in units of the transmission / reception sections. Accordingly, the first communication slot used for data transmission and the second communication slot used for data reception are assigned, and each of the plurality of communication devices is assigned in units of transmission / reception sections.
　また、この第１の側面において、上記制御部は、上記複数の通信装置を順番に上記送受信区間単位で割り当てるようにしてもよい。これにより、複数の通信装置を順番に送受信区間単位で割り当てるという作用をもたらす。 Further, in the first aspect, the control unit may allocate the plurality of communication devices in units of the transmission / reception sections in order. This brings about the effect | action of allocating a some communication apparatus in order of a transmission / reception area.
　また、この第１の側面において、上記制御部は、上記送受信区間の数に基づいて、送受信の対象となる上記送受信区間に割り当てた通信装置を特定するようにしてもよい。これにより、送受信区間の数に基づいて、送受信の対象となる送受信区間に割り当てた通信装置を特定するという作用をもたらす。 In the first aspect, the control unit may identify a communication device assigned to the transmission / reception section to be transmitted / received based on the number of transmission / reception sections. This brings about the effect | action of specifying the communication apparatus allocated to the transmission / reception area used as the object of transmission / reception based on the number of transmission / reception areas.
　また、この第１の側面において、上記制御部は、送信対象となるデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信の対象となる上記送受信区間に割り当てた通信装置を特定するようにしてもよい。これにより、送信対象となるデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信の対象となる送受信区間に割り当てた通信装置を特定するという作用をもたらす。 In the first aspect, the control unit identifies a communication device assigned to the transmission / reception section to be transmitted / received based on a sequence number stored in a header of a data frame of data to be transmitted. You may do it. Accordingly, there is an effect that the communication device assigned to the transmission / reception section to be transmitted / received is identified based on the sequence number stored in the header of the data frame of the data to be transmitted.
　また、この第１の側面において、上記制御部は、上記送受信タイミングを指定するための情報をＡｓｓｏｃｉａｔｉｏｎフレームに含めて上記複数の通信装置のそれぞれに送信することにより、上記送受信タイミングを上記複数の通信装置のそれぞれに通知するようにしてもよい。これにより、送受信タイミングを指定するための情報をＡｓｓｏｃｉａｔｉｏｎフレームに含めて複数の通信装置のそれぞれに送信することにより、送受信タイミングを複数の通信装置のそれぞれに通知するという作用をもたらす。 In the first aspect, the control unit includes the information for designating the transmission / reception timing in an Association frame and transmits the information to each of the plurality of communication devices, thereby changing the transmission / reception timing to the plurality of communication. You may make it notify to each of apparatus. As a result, the information for designating the transmission / reception timing is included in the Association frame and transmitted to each of the plurality of communication devices, thereby providing an effect of notifying each of the plurality of communication devices of the transmission / reception timing.
　また、この第１の側面において、上記通信を、ＥＣＭＡ－４０１仕様に準拠したデータ交換とするようにしてもよい。これにより、ＥＣＭＡ－４０１仕様に準拠したデータ交換を行うという作用をもたらす。 In the first aspect, the communication may be data exchange conforming to the ECMA-401 specification. This brings about the effect that data exchange conforming to the ECMA-401 specification is performed.
　また、本技術の第２の側面は、体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、上記他の通信装置との間でデータの送受信を行うよう制御する制御部を具備する通信装置およびその通信方法ならびに当該方法をコンピュータに実行させるプログラムである。これにより、通信相手となる他の通信装置から指定された送受信タイミングに従って、他の通信装置との間でデータの送受信を行うという作用をもたらす。 In addition, according to a second aspect of the present technology, in communication using a body as a signal transmission medium, data is transmitted / received to / from the other communication device according to a transmission / reception timing designated by the other communication device serving as a communication partner. A communication apparatus including a control unit that controls to perform the communication, a communication method thereof, and a program that causes a computer to execute the method. Thereby, according to the transmission / reception timing designated from the other communication apparatus used as a communicating party, the effect | action of performing transmission / reception of data between other communication apparatuses is brought about.
　また、この第２の側面において、上記制御部は、複数の通信スロットにより構成される送受信区間において、上記データの受信に使用する第１通信スロットと、上記データの送信に使用する第２通信スロットとが割り当てられている場合に、上記通信装置に割り当てられた上記送受信区間における第１通信スロットを用いて上記データの受信を行い、当該送受信区間における第２通信スロットを用いて上記データの送信を行うようにしてもよい。これにより、自装置に割り当てられた送受信区間における第１通信スロットを用いてデータの受信を行い、その送受信区間における第２通信スロットを用いてデータの送信を行うという作用をもたらす。 In the second aspect, the control unit includes a first communication slot used for receiving the data and a second communication slot used for transmitting the data in a transmission / reception section configured by a plurality of communication slots. Is received using the first communication slot in the transmission / reception section assigned to the communication device, and the data is transmitted using the second communication slot in the transmission / reception section. You may make it perform. As a result, data is received using the first communication slot in the transmission / reception section allocated to the own apparatus, and data is transmitted using the second communication slot in the transmission / reception section.
　また、この第２の側面において、上記制御部は、上記送受信区間の数に基づいて、送受信タイミングとなる上記送受信区間を特定するようにしてもよい。これにより、送受信区間の数に基づいて、送受信タイミングとなる送受信区間を特定するという作用をもたらす。 Further, in the second aspect, the control unit may identify the transmission / reception section serving as a transmission / reception timing based on the number of the transmission / reception sections. This brings about the effect | action of specifying the transmission / reception area used as transmission / reception timing based on the number of transmission / reception areas.
　また、この第２の側面において、上記制御部は、受信したデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信タイミングとなる上記送受信区間を特定するようにしてもよい。これにより、受信したデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信タイミングとなる送受信区間を特定するという作用をもたらす。 In the second aspect, the control unit may specify the transmission / reception section serving as a transmission / reception timing based on a sequence number stored in a header of a data frame of received data. This brings about the effect | action of specifying the transmission / reception area used as transmission / reception timing based on the sequence number stored in the header in the data frame of the received data.
　また、この第２の側面において、上記制御部は、Ａｓｓｏｃｉａｔｉｏｎフレームに含まれる上記送受信タイミングを指定するための情報に基づいて、上記他の通信装置から指定された送受信タイミングを取得するようにしてもよい。これにより、Ａｓｓｏｃｉａｔｉｏｎフレームに含まれる送受信タイミングを指定するための情報に基づいて、他の通信装置から指定された送受信タイミングを取得するという作用をもたらす。 In the second aspect, the control unit may acquire the transmission / reception timing designated by the other communication device based on the information for designating the transmission / reception timing included in the Association frame. Good. Thereby, based on the information for designating the transmission / reception timing included in the Association frame, there is an effect of acquiring the transmission / reception timing designated by another communication apparatus.
　また、本技術の第３の側面は、体を信号の伝送媒体とする通信において、複数の受信機器に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、上記複数の受信機器に対するデータの送受信タイミングを切り替える送信機器と、上記通信において、上記送信機器から指定された送受信タイミングに従って、上記送信機器との間でデータの送受信を行う複数の受信機器とを具備する通信システムおよびその通信方法ならびに当該方法をコンピュータに実行させるプログラムである。これにより、送信機器は、複数の受信機器に対するデータの送受信タイミングを指定し、その指定された送受信タイミングに従って、複数の受信機器に対するデータの送受信タイミングを切り替え、受信機器は、送信機器から指定された送受信タイミングに従って、送信機器との間でデータの送受信を行うという作用をもたらす。 According to a third aspect of the present technology, in communication using a body as a signal transmission medium, data transmission / reception timings for a plurality of receiving devices are designated, and data for the plurality of receiving devices is specified according to the designated transmission / reception timings. And a communication method therefor, comprising: a transmission device that switches transmission / reception timing of the communication device; and a plurality of reception devices that transmit / receive data to / from the transmission device according to the transmission / reception timing specified by the transmission device in the communication And a program for causing a computer to execute the method. As a result, the transmitting device designates data transmission / reception timings for a plurality of receiving devices, switches the data transmission / reception timings for the plurality of receiving devices according to the designated transmission / reception timings, and the receiving device is designated by the transmitting device. According to the transmission / reception timing, data is transmitted / received to / from the transmitting device.
　本技術によれば、体を信号の伝送媒体とする通信を適切に行うことができるという優れた効果を奏し得る。なお、ここに記載された効果は必ずしも限定されるものではなく、本開示中に記載されたいずれかの効果であってもよい。 According to the present technology, it is possible to achieve an excellent effect that communication using the body as a signal transmission medium can be appropriately performed. Note that the effects described here are not necessarily limited, and may be any of the effects described in the present disclosure.
本技術の実施の形態における通信装置１００の構成例を示すブロック図である。It is a block diagram showing an example of composition of communication apparatus 100 in an embodiment of this art. 本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 100 to 102 in embodiment of this technique. 本技術の実施の形態における通信装置１００乃至１０４間でデータのやりとりを行う場合の通信例を示す図である。It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 100-104 in embodiment of this technique. 本技術の実施の形態における通信装置１００によるデータ通信処理の処理手順の一例を示すフローチャートである。6 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology. 本技術の実施の形態における通信装置１０１によるデータ通信処理の処理手順の一例を示すフローチャートである。12 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology. 本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 100 to 102 in embodiment of this technique. 本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 100 to 102 in embodiment of this technique. 本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 100 to 102 in embodiment of this technique. 本技術の実施の形態における通信装置１００によるデータ通信処理の処理手順の一例を示すフローチャートである。6 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology. 本技術の実施の形態における通信装置１０１によるデータ通信処理の処理手順の一例を示すフローチャートである。12 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology. 本技術の実施の形態における通信装置５００、５１０、５２０、５３０間でデータのやりとりを行う場合の通信例を示す図である。It is a figure which shows the example of communication in the case of exchanging data between the communication apparatuses 500, 510, 520, and 530 in embodiment of this technique.
　以下、本技術を実施するための形態（以下、実施の形態と称する）について説明する。説明は以下の順序により行う。
　１．実施の形態（体を信号の伝送媒体とする通信において、複数の受信機器に対するデータの送受信タイミングを指定し、その指定された送受信タイミングに従って、複数の受信機器に対するデータの送受信タイミングを切り替える例） Hereinafter, modes for carrying out the present technology (hereinafter referred to as embodiments) will be described. The description will be made in the following order.
1. Embodiment (Example of specifying data transmission / reception timings for a plurality of receiving devices and switching data transmission / reception timings for a plurality of receiving devices in accordance with the specified transmission / reception timings in communication using a body as a signal transmission medium)
　＜１．実施の形態＞
　［通信装置の構成例］
　図１は、本技術の実施の形態における通信装置１００の構成例を示すブロック図である。なお、図３等で示す通信装置１０１乃至１０４の構成については、通信装置１００と同様であるため、通信装置１０１乃至１０４の構成についての説明を省略する。 <1. Embodiment>
[Configuration example of communication device]
FIG. 1 is a block diagram illustrating a configuration example of a communication device 100 according to an embodiment of the present technology. Note that the configuration of the communication apparatuses 101 to 104 shown in FIG. 3 and the like is the same as that of the communication apparatus 100, and thus the description of the configuration of the communication apparatuses 101 to 104 is omitted.
　通信装置１００は、体（例えば、人体、動物の体）を信号の伝送媒体とする通信を行う通信装置（例えば、人体通信装置）の一例である。この通信（体を信号の伝送媒体とする通信）は、体の表面（または、近接（例えば、服の表面））に装着されている場合に可能となる通信である。 The communication apparatus 100 is an example of a communication apparatus (for example, a human body communication apparatus) that performs communication using a body (for example, a human body or an animal body) as a signal transmission medium. This communication (communication using the body as a signal transmission medium) is communication that can be performed when worn on the surface of the body (or close proximity (for example, the surface of clothes)).
　また、本技術の実施の形態では、通信装置１００が人体を信号の伝送媒体とする通信を行う例を示す。また、本技術の実施の形態では、通信装置１００を人体の表面（例えば、皮膚表面）に装着して使用する場合の例を示す。また、本技術の実施の形態では、人体を信号の伝送媒体とする通信において１対Ｎ通信を行う例を示す。 In the embodiment of the present technology, an example in which the communication apparatus 100 performs communication using a human body as a signal transmission medium is shown. Moreover, in embodiment of this technique, the example in the case of using the communication apparatus 100 by mounting | wearing on the surface (for example, skin surface) of a human body is shown. In the embodiment of the present technology, an example in which 1-to-N communication is performed in communication using a human body as a signal transmission medium will be described.
　通信装置１００乃至１０４は、例えば、人体（または、人体に装着するもの（服、帽子等））に装着することが可能な機器とすることができる。例えば、通信装置１００乃至１０４は、スマートフォン、タブレット端末、ヘッドフォン、イヤフォン、腕時計、リストバンド、スピーカ、メガネ、血圧計とすることができる。 The communication devices 100 to 104 can be devices that can be worn on the human body (or on the human body (clothes, hats, etc.)), for example. For example, the communication devices 100 to 104 can be smartphones, tablet terminals, headphones, earphones, wrist watches, wristbands, speakers, glasses, and blood pressure monitors.
　通信装置１００は、電極１１０と、送信部１２０と、受信部１３０と、処理部１４０と、記憶部１５０とを備える。 The communication apparatus 100 includes an electrode 110, a transmission unit 120, a reception unit 130, a processing unit 140, and a storage unit 150.
　電極１１０は、通信装置１００が人体に装着されている場合に、人体の表面１０に接する状態（または、近接する状態）となる。 When the communication device 100 is worn on the human body, the electrode 110 is in contact with (or in close proximity to) the surface 10 of the human body.
　送信部１２０は、電極１１０が人体の表面１０に接する状態となっている場合に、電極１１０を通じて電位変動を発生させるものである。すなわち、送信部１２０は、電極１１０を通じて電位変動を発生させることにより、人体に装着されている他の通信装置に、情報提供部１４１から提供されるデータを送信する。 The transmission unit 120 generates a potential variation through the electrode 110 when the electrode 110 is in contact with the surface 10 of the human body. That is, the transmission unit 120 transmits the data provided from the information providing unit 141 to another communication device worn on the human body by generating a potential fluctuation through the electrode 110.
　受信部１３０は、電極１１０が人体の表面１０に接する状態となっている場合に、電極１１０を通じて他の通信装置が発生させた電位変動を検出するものである。すなわち、受信部１３０は、電極１１０を通じて他の通信装置が発生させた電位変動を検出することにより、他の通信装置から送信されたデータを受信する。そして、受信部１３０は、受信したデータを情報取得部１４２に供給する。 When the electrode 110 is in contact with the surface 10 of the human body, the receiving unit 130 detects potential fluctuations generated by other communication devices through the electrode 110. That is, the receiving unit 130 receives data transmitted from another communication device by detecting a potential fluctuation generated by the other communication device through the electrode 110. Then, the reception unit 130 supplies the received data to the information acquisition unit 142.
　また、送信部１２０および受信部１３０は、ＴＤＳ（Time Division Slot）毎に時分割に動作する。 In addition, the transmission unit 120 and the reception unit 130 operate in a time division manner for each TDS (Time Division Division Slot).
　処理部１４０は、送信部１２０、受信部１３０および記憶部１５０に接続されている。また、処理部１４０は、送受信信号を処理するための各部（情報提供部１４１、情報取得部１４２、制御部１４３）を備える。 The processing unit 140 is connected to the transmission unit 120, the reception unit 130, and the storage unit 150. The processing unit 140 includes units (information providing unit 141, information acquiring unit 142, and control unit 143) for processing transmission / reception signals.
　情報提供部１４１は、制御部１４３の制御に基づいて、他の通信装置に送信するデータを送信部１２０に提供するものである。 The information providing unit 141 provides the transmission unit 120 with data to be transmitted to another communication device based on the control of the control unit 143.
　情報取得部１４２は、制御部１４３の制御に基づいて、受信部１３０が他の通信装置から受信したデータに含まれる各種情報を取得して、制御部１４３に供給するものである。 The information acquisition unit 142 acquires various types of information included in the data received by the reception unit 130 from other communication devices based on the control of the control unit 143 and supplies the acquired information to the control unit 143.
　制御部１４３は、制御プログラムに基づいて、通信装置１００の動作内容を制御するものである。例えば、制御部１４３は、ＴＤＳ毎に通信装置１００が動作するタイミングの生成および動作内容を決定する。また、例えば、制御部１４３は、データの送受信を制御する。また、例えば、制御部１４３は、記憶部１５０からデータの取り出し、または、記憶部１５０へのデータの格納を行う。 The control unit 143 controls the operation content of the communication apparatus 100 based on the control program. For example, the control unit 143 determines the generation of the timing at which the communication apparatus 100 operates and the operation content for each TDS. For example, the control unit 143 controls data transmission / reception. For example, the control unit 143 extracts data from the storage unit 150 or stores data in the storage unit 150.
　また、例えば、通信装置１００が送信機器として動作する場合には、制御部１４３は、体を信号の伝送媒体とする通信において、複数の受信機器に対するデータの送受信タイミングを指定する制御を行う。そして、制御部１４３は、その指定された送受信タイミングに従って、複数の受信機器に対するデータの送受信タイミングを切り替える制御を行う。 Also, for example, when the communication apparatus 100 operates as a transmission device, the control unit 143 performs control to specify data transmission / reception timings for a plurality of reception devices in communication using the body as a signal transmission medium. And the control part 143 performs control which switches the transmission / reception timing of the data with respect to a some receiving apparatus according to the designated transmission / reception timing.
　また、例えば、通信装置１００が受信機器として動作する場合には、制御部１４３は、体を信号の伝送媒体とする通信において、送信装置から指定された送受信タイミングに従って、送信機器との間でデータの送受信を行うよう制御する。 Further, for example, when the communication device 100 operates as a receiving device, the control unit 143 performs data communication with the transmitting device according to the transmission / reception timing designated by the transmitting device in communication using the body as a signal transmission medium. Control to send and receive.
　ここで、人体を信号の伝送媒体とする通信については、上述したように、特許文献１が標準仕様として策定されている。そこで、その仕様について説明する。 Here, as described above, Patent Document 1 is established as a standard specification for communication using a human body as a signal transmission medium. Therefore, the specification will be described.
　その仕様では、自発的に通信を開始しようとする通信装置（Ｔａｌｋｅｒ）と、Ｔａｌｋｅｒに応答して通信を開始する通信装置（Ｌｉｓｔｅｎｅｒ）とが規定されている。また、通信タイミングの規定として、時間軸上にＴＤＳ１乃至ＴＤＳ８と呼ばれるタイムスロットが定義されており、８つのＴＤＳでＴｉｍｅ－ｓｅｇｍｅｎｔというスーパーフレームを構成している。 The specification defines a communication device (Talker) that intends to start communication spontaneously and a communication device (Listener) that starts communication in response to the Talker. In addition, as communication timings, time slots called TDS1 to TDS8 are defined on the time axis, and a superframe called Time-segment is composed of eight TDSs.
　また、その仕様には、２種類の通信の方式が規定されている。１つは、通信装置間のデータ交換方式（Full duplex communication）である。また、もう１つは、データの同報通信方式（Broadcast communication）である。 The specification also defines two types of communication. One is a data exchange method (Full duplex communication) between communication devices. The other is a data broadcasting communication system (Broadcast communication).
　Ｆｕｌｌ　ｄｕｐｌｅｘ　ＣＯＭＭＵＮＩＣＡＴＩＯＮでは、ＴａｌｋｅｒおよびＬｉｓｔｅｎｅｒは、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔの間に１つずつのＴＤＳを用いてデータフレームを交互に送信する。この場合のデータフレームには、ヘッダ部分にＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒが２ビット付加され、フッタ部分にＣＲＣ（Cyclic Redundancy Check、巡回冗長検査）が１６ビット付加される。また、通信相手が送信したフレームを正しく受信できた場合は、通信相手のフレームに記載されているＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒをインクリメントし、自装置が送信すべきフレームに付加して送信する。 In Full duplex COMMUNICATION, the Talker and Listener transmit data frames alternately using one TDS during one Time-segment. In this case, 2 bits of Sequence number are added to the header portion, and 16 bits of CRC (Cyclic Redundancy Check) are added to the footer portion. If the frame transmitted by the communication partner can be received correctly, the sequence number described in the frame of the communication partner is incremented and added to the frame to be transmitted by the own apparatus.
　一方、通信相手が送信したフレームを正しく受信できなかった場合（例えば、受信したフレームのＣＲＣの計算結果がフッタ部分に記載のＣＲＣと一致せず、破損が検出された場合）は、自装置が直前に送信したフレームと同じものを送信する。 On the other hand, when the frame transmitted by the communication partner cannot be correctly received (for example, when the CRC calculation result of the received frame does not match the CRC described in the footer part and the breakage is detected), The same frame as the frame transmitted immediately before is transmitted.
　このように、受信したフレームのＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの変化を観測することにより、自装置が直前に送信したフレームに対する肯定応答（ＡＣＫ（ACKnowledgement））または否定応答（ＮＡＣＫ（Negative ACKnowledgement））として利用することができる。なお、ＡＣＫおよびＮＡＣＫを行うための制御フレームは定義されていない。 In this way, by observing the change of the Sequence number of the received frame, it can be used as an acknowledgment (ACK (ACKnowledgement)) or negative response (NACK (Negative ACKnowledgement)) for the frame transmitted by the device immediately before. it can. A control frame for performing ACK and NACK is not defined.
　また、Ｂｒｏａｄｃａｓｔ　ＣＯＭＭＵＮＩＣＡＴＩＯＮでは、Ｔａｌｋｅｒは、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔの間に１つのＴＤＳを用いてフレームを送信し、Ｌｉｓｔｅｎｅｒが受信する。なお、ＬｉｓｔｅｎｅｒからＴａｌｋｅｒに対して送信することはない。 Also, in Broadcast COMMUNICATION, Talker transmits a frame using one TDS during 1 Time-segment, and Listener receives it. Note that the listener does not transmit to Talker.
　また、ＴａｌｋｅｒがＬｉｓｔｅｎｅｒに対し、通信に関する情報を事前に通知し、合意を得るための接続手続き（Ａｓｓｏｃｉａｔｉｏｎ）が規定されている。この通信に関する情報は、例えば、これからＦｕｌｌ　ｄｕｐｌｅｘ　ＣＯＭＭＵＮＩＣＡＴＩＯＮおよびＢｒｏａｄｃａｓｔ　ＣＯＭＭＵＮＩＣＡＴＩＯＮのどちらの方式で通信を開始しようとするのか、どのＴＤＳを用いて通信を行うかに関する情報である。 Also, a connection procedure (association) is provided for the Talker to notify the listener in advance of communication information and to obtain an agreement. The information related to this communication is, for example, information regarding which of the Full duplex COMMUNICATION and the Broadcast COMMUNICATION will start communication and which TDS is used for communication.
　Ｔａｌｋｅｒは、通信の方式およびＴＤＳ番号を決定し、これらの情報が記載されているフレーム（Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ１）を接続要求として送信する。これを受信したＬｉｓｔｅｎｅｒは、自装置がランダムに生成した数が記載されているＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を要求応答として返信する。 Talker determines a communication method and a TDS number, and transmits a frame (Association Request 1) in which such information is described as a connection request. Upon receiving this, the Listener returns, as a request response, Association Response 1 in which the number generated by itself is randomly described.
　Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を受け取ったＴａｌｋｅｒは、接続確認のため、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１と同じランダム数を付加したＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を送信する。これを受信したＬｉｓｔｅｎｅｒは、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を確認応答として返信する。これらのやりとりにより、接続手順が完了する。 The Talker that has received the Association Response 1 transmits an Association Request 2 to which the same random number as the Association Response 1 is added for connection confirmation. Upon receiving this, the Listener returns Association Response 2 as a confirmation response. These exchanges complete the connection procedure.
　この仕様は、物理的な性質として、同時に複数の通信装置が同一のＴＤＳで送信すると干渉が発生し、正常に通信することができないという特徴を有する。このため、１つの通信装置には未使用のＴＤＳの中から１つを割り当てることが規定され、データフレーム中には、送信機器を識別するフィールドとして、ＴＤＳ番号が付加されている。また、受信機器は、受信したフレーム中のＴＤＳ番号と、Ａｓｓｏｃｉａｔｉｏｎによって通知された送信機器が使用するＴＤＳとを比較することにより、それが自装置に向けて送信されたものかどうかを識別することができる。なお、受信したフレームにおけるヘッダには、宛先のアドレスが存在しない。 This specification is characterized in that, as a physical property, when a plurality of communication devices transmit simultaneously with the same TDS, interference occurs and communication cannot be performed normally. For this reason, it is specified that one TDS is assigned to one communication apparatus, and a TDS number is added to the data frame as a field for identifying a transmitting device. In addition, the receiving device compares the TDS number in the received frame with the TDS used by the transmitting device notified by the Association, and identifies whether or not it is transmitted to the own device. Can do. Note that there is no destination address in the header of the received frame.
　また、Ａｓｓｏｃｉａｔｉｏｎフレームのうち、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、Ｌｉｓｔｅｎｅｒを識別するためのランダム数が記載されている。このため、受信したＬｉｓｔｅｎｅｒが自装置に向けて送信されたものかどうかをＴＤＳに依存することなく識別することができる。 Also, among the Association frames, Association Request 2 describes a random number for identifying the listener. For this reason, it is possible to identify whether or not the received listener is transmitted to the own apparatus without depending on the TDS.
　ここで、上述した仕様を応用して、３つの通信装置Ａ乃至Ｃ間でデータのやりとりを行う場合を想定する。例えば、通信装置Ａを携帯型のオーディオプレーヤーとし、通信装置Ｂを左用イヤフォンとし、通信装置Ｃを右用イヤフォンとする。この場合に、通信装置Ａは、通信装置Ｂおよび通信装置Ｃに対し、それぞれ異なるオーディオデータをストリーミング送信し、通信装置Ｂおよび通信装置ＣのそれぞれからＡＣＫを受信する例を想定する。このときには、通信装置Ａの動作として、次の（Ａ１）および（Ａ２）が考えられる。
　（Ａ１）短い間隔でＡｓｓｏｃｉａｔｉｏｎを繰り返し、通信装置Ｂおよび通信装置Ｃのそれぞれと交互にデータ送信およびデータ受信を行う。
　（Ａ２）通信装置Ｂおよび通信装置Ｃにそれぞれ異なるＴＤＳを割り当て、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔ内で、通信装置Ｂおよび通信装置Ｃのそれぞれと同時にデータ送信およびデータ受信を行う。 Here, it is assumed that data is exchanged between the three communication devices A to C by applying the above-described specifications. For example, the communication device A is a portable audio player, the communication device B is a left earphone, and the communication device C is a right earphone. In this case, it is assumed that the communication device A performs streaming transmission of different audio data to the communication device B and the communication device C, and receives ACK from each of the communication device B and the communication device C. At this time, the following (A1) and (A2) are considered as operations of the communication apparatus A.
(A1) Association is repeated at short intervals, and data transmission and data reception are alternately performed with each of the communication apparatuses B and C.
(A2) A different TDS is assigned to each of the communication device B and the communication device C, and data transmission and data reception are performed simultaneously with each of the communication device B and the communication device C within one Time-segment.
　例えば、通信装置Ａの動作として、上述した（Ａ１）を行う場合には、通信装置Ｂまたは通信装置Ｃへの接続を切り替えるためのＡｓｓｏｃｉａｔｉｏｎに要する時間がオーバーヘッドとなる。このように、Ａｓｓｏｃｉａｔｉｏｎが頻繁に行われるため、通信の性能が悪化するおそれがある。 For example, when (A1) described above is performed as the operation of the communication apparatus A, the time required for association for switching the connection to the communication apparatus B or the communication apparatus C becomes an overhead. As described above, since association is frequently performed, communication performance may be deteriorated.
　また、例えば、通信装置Ａの動作として、上述した（Ａ２）を行う場合には、実装において不都合が生じる。例えば、通信装置Ａは、通信装置Ｂおよび通信装置Ｃにそれぞれ割り当てたＴＤＳにおいて、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔあたり２度のデータ送受信を行う必要がある。このため、通信装置Ａは、送受信回路を高速に動作させることが想定される。この場合には、通信装置Ａの消費電力が増加する。または、通信装置Ａは、送受信回路を二重に実装することが想定される。この場合には、通信装置Ａの実装コストが増加する。このため、通信装置の小型化や低消費電力を実現することが困難となるおそれがある。 Also, for example, when the above-described (A2) is performed as the operation of the communication apparatus A, inconvenience occurs in the mounting. For example, the communication device A needs to transmit and receive data twice per time-segment in the TDS assigned to the communication device B and the communication device C, respectively. For this reason, it is assumed that the communication apparatus A operates the transmission / reception circuit at high speed. In this case, the power consumption of the communication device A increases. Alternatively, it is assumed that the communication device A is implemented with double transmission / reception circuits. In this case, the mounting cost of the communication device A increases. For this reason, it may be difficult to achieve downsizing and low power consumption of the communication device.
　また、上述したように、通信装置Ａと、通信装置Ｂおよび通信装置Ｃのそれぞれとが通信を行う場合に、１　Ｔｉｍｅ－ｓｅｇｍｅｎｔ内の計８ＴＤＳのうち、半分の４ＴＤＳを占有することになる。このため、同じ人体上に装着することができる通信装置の台数が低下する。 Further, as described above, when the communication device A and each of the communication device B and the communication device C perform communication, half of the total of 8 TDSs in one Time-segment occupy 4 TDSs. For this reason, the number of communication devices that can be mounted on the same human body decreases.
　そこで、本技術の実施の形態では、複数の通信装置で１つのＴＤＳを共有することにより、通信のパフォーマンスを低下させることなく、また、収容台数を低下させることなく、１台の通信装置と複数台の通信装置とが通信を行える例を示す。 Therefore, in the embodiment of the present technology, by sharing a single TDS among a plurality of communication devices, a communication device and a plurality of communication devices can be connected to a plurality of communication devices without reducing the communication performance and the number of accommodated devices. The example which can communicate with the communication apparatus of a stand is shown.
　また、本技術の実施の形態では、Ｔａｌｋｅｒが予め決定したＴＤＳを用いて複数のＬｉｓｔｅｎｅｒが共有して通信を行う例を示す。なお、どのＴＤＳを用いるか、Ｔｉｍｅ－ｓｅｇｍｅｎｔ毎にＴａｌｋｅｒが何れのＬｉｓｔｅｎｅｒとデータ交換を行うかについては、Ａｓｓｏｃｉａｔｉｏｎによって合意する。 Further, in the embodiment of the present technology, an example in which a plurality of listeners share and perform communication using TDS determined in advance by Talker is shown. It is agreed by Association that which TDS is used and which Listener exchanges data for each Time-segment.
　また、本技術の実施の形態では、体を信号の伝送媒体とする通信として、ＥＣＭＡ－４０１仕様に準拠したデータ交換の通信例を示す。 In the embodiment of the present technology, a communication example of data exchange conforming to the ECMA-401 specification is shown as communication using the body as a signal transmission medium.
　［１つのＴａｌｋｅｒと複数のＬｉｓｔｅｎｅｒとの間でデータのやりとりを行う場合の通信例］
　図２は、本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。 [Communication example when data is exchanged between one Talker and multiple listeners]
FIG. 2 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
　図２では、通信装置１００をＴａｌｋｅｒとし、通信装置１０１および通信装置１０２をＬｉｓｔｅｎｅｒとする場合の例を示す。また、図２では、通信装置１００が通信装置１０１および通信装置１０２に対してそれぞれ異なるデータを送信し、通信装置１０１および通信装置１０２のそれぞれからデータを受信する場合の例を示す。なお、図２において、各通信装置に対応する横軸における正方形はＴＤＳを表し、この正方形内の数は、ＴＤＳ番号を表すものとする。太線の正方形は、送受信タイミングとなるＴＤＳを表すものとする。また、これ以降で示す各図についても同様に、ＴＤＳ、ＴＤＳ番号等を表す。 FIG. 2 shows an example in which the communication device 100 is a Talker and the communication device 101 and the communication device 102 are Listeners. FIG. 2 illustrates an example in which the communication apparatus 100 transmits different data to the communication apparatus 101 and the communication apparatus 102 and receives data from each of the communication apparatus 101 and the communication apparatus 102. In FIG. 2, the square on the horizontal axis corresponding to each communication device represents TDS, and the number in the square represents the TDS number. A thick square represents a TDS that is a transmission / reception timing. In addition, the TDS, the TDS number, and the like are similarly expressed for each of the following drawings.
　また、図２では、通信装置１００がＴＤＳ２を使用してデータを送信し、通信装置１０１および通信装置１０２のうちの一方がＴＤＳ６を使用してデータフレーム（ＡＣＫに相当）を送信する例を示す。なお、図２では、ＡＣＫに相当するデータフレームを、ＡＣＫの文字で表す。 2 illustrates an example in which the communication apparatus 100 transmits data using TDS2, and one of the communication apparatus 101 and the communication apparatus 102 transmits a data frame (corresponding to ACK) using TDS6. . In FIG. 2, a data frame corresponding to ACK is represented by ACK characters.
　ここで、通信装置１００がＴＤＳ２のタイミングで送信したデータが、通信装置１０１および通信装置１０２のうちのどちらに対するものであるかについては、次の（Ｂ１）および（Ｂ２）の２つの方法によって識別することができる。
　（Ｂ１）Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を起点とするＴｉｍｅ－ｓｅｇｍｅｎｔに基づいて識別する識別方法。
　（Ｂ２）データフレームに含まれるＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値に基づいて識別する識別方法。 Here, it is identified by the following two methods (B1) and (B2) whether the data transmitted by the communication device 100 at the timing of TDS2 is for the communication device 101 or the communication device 102. can do.
(B1) An identification method for identification based on Time-segment starting from Association Request 2.
(B2) An identification method for identification based on the value of Sequence number included in the data frame.
　上述した（Ｂ１）または（Ｂ２）のうちの何れの動作を行うかは、通信装置１００が決定し、通信装置１０１および通信装置１０２に通知する。この通知は、例えば、既存のＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２に、上述した（Ｂ１）または（Ｂ２）のうちの何れの動作を行うかを示すフィールドを新たに定義（または追加）することにより行うことができる。例えば、非特許文献１のＰ１３に記載されているｔａｂｌｅ４の何れかの４ビットを、新たなフィールドとして定義することができる。 The communication device 100 determines which operation (B1) or (B2) is performed, and notifies the communication device 101 and the communication device 102. This notification can be performed, for example, by newly defining (or adding) a field indicating which operation (B1) or (B2) described above is to be performed in the existing Association Request 2. For example, any 4 bits of table4 described in P13 of Non-Patent Document 1 can be defined as a new field.
　また、通信装置１００は、その新たに定義されたフィールドに、上述した（Ｂ１）または（Ｂ２）のうちの何れの動作を行うかを示す情報を格納し、通信装置１０１および通信装置１０２のそれぞれに送信することにより、その通知を行うことができる。 In addition, the communication apparatus 100 stores information indicating which operation (B1) or (B2) described above is performed in the newly defined field, and each of the communication apparatus 101 and the communication apparatus 102 The notification can be made by sending to.
　このように、通信装置１００の制御部１４３は、送受信タイミングを指定するための情報をＡｓｓｏｃｉａｔｉｏｎフレームに含めて複数の受信機器のそれぞれに送信することにより、その送受信タイミングを複数の受信機器のそれぞれに通知することができる。 As described above, the control unit 143 of the communication device 100 includes the information for designating the transmission / reception timing in the association frame and transmits the information to each of the plurality of receiving devices, thereby transmitting the transmission / reception timing to each of the plurality of receiving devices. You can be notified.
　また、通信装置１０１および通信装置１０２は、その新たに定義されたフィールドに格納された情報を読み出し、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を通信装置１００に返信する。これにより、通信装置１００と、通信装置１０１および通信装置１０２とは、上述した（Ｂ１）または（Ｂ２）のうちの何れの動作を行うかを合意することができたものとする。また、これ以降は、通信装置１００乃至通信装置１０２は、合意された動作を開始する。 In addition, the communication device 101 and the communication device 102 read the information stored in the newly defined field, and return Association Response 2 to the communication device 100. As a result, it is assumed that the communication device 100, the communication device 101, and the communication device 102 have agreed to perform any of the operations (B1) or (B2) described above. Thereafter, the communication device 100 to the communication device 102 start the agreed operation.
　このように、通信装置１０１および通信装置１０２の制御部は、Ａｓｓｏｃｉａｔｉｏｎフレームに含まれる送受信タイミングを指定するための情報に基づいて、通信装置１００から指定された送受信タイミングを取得することができる。 As described above, the control units of the communication apparatus 101 and the communication apparatus 102 can acquire the transmission / reception timing designated from the communication apparatus 100 based on the information for designating the transmission / reception timing included in the Association frame.
　具体的には、通信装置１００は、ＴＤＳ２のタイミングで通信装置１０１にデータフレームを送信する（２０１）。また、通信装置１０１は、ＴＤＳ６のタイミングでデータフレーム（ＡＣＫに相当）を送信する（２０２）。 Specifically, the communication device 100 transmits a data frame to the communication device 101 at the timing of TDS2 (201). The communication apparatus 101 transmits a data frame (corresponding to ACK) at the timing of TDS6 (202).
　続いて、通信装置１００は、ＴＤＳ２のタイミングで通信装置１０２にデータフレームを送信する（２０３）。また、通信装置１０２は、ＴＤＳ６のタイミングでデータフレーム（ＡＣＫに相当）を送信する（２０４）。 Subsequently, the communication apparatus 100 transmits a data frame to the communication apparatus 102 at the timing of TDS2 (203). The communication apparatus 102 transmits a data frame (corresponding to ACK) at the timing of TDS6 (204).
　続いて、通信装置１００は、ＴＤＳ２のタイミングで通信装置１０１にデータフレームを送信する（２０５）。また、通信装置１０１は、ＴＤＳ６のタイミングでデータフレーム（ＡＣＫに相当）を送信する（２０６）。また、これ以降についても同様に、通信装置１００と、通信装置１０１および通信装置１０２との間で、データフレーム（データおよびＡＣＫに相当するもの）のやりとりが繰り返し行われる。 Subsequently, the communication apparatus 100 transmits a data frame to the communication apparatus 101 at the timing of TDS2 (205). The communication apparatus 101 transmits a data frame (corresponding to ACK) at the timing of TDS6 (206). Similarly, data frames (corresponding to data and ACK) are repeatedly exchanged between the communication device 100, the communication device 101, and the communication device 102.
　［Ｔｉｍｅ－ｓｅｇｍｅｎｔに基づいて自装置宛のデータを識別する場合の通信例］
　図３は、本技術の実施の形態における通信装置１００乃至１０４間でデータのやりとりを行う場合の通信例を示す図である。 [Communication example when identifying data addressed to own device based on Time-segment]
FIG. 3 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 104 according to the embodiment of the present technology.
　図３では、通信装置１００をＴａｌｋｅｒとし、通信装置１０１乃至１０４をＬｉｓｔｅｎｅｒとする場合の例を示す。また、図３では、通信装置１００が通信装置１０１乃至１０４に対してそれぞれ異なるデータを送信し、通信装置１０１乃至１０４のそれぞれから確認応答データ（ＡＣＫに相当）を受信する場合の例を示す。また、図３では、上述した（Ｂ１）の動作を行う場合の例を示す。 FIG. 3 shows an example in which the communication device 100 is a Talker and the communication devices 101 to 104 are Listeners. FIG. 3 illustrates an example in which the communication apparatus 100 transmits different data to the communication apparatuses 101 to 104 and receives confirmation response data (corresponding to ACK) from each of the communication apparatuses 101 to 104. FIG. 3 shows an example in which the operation (B1) described above is performed.
　ここで、通信装置１００は、カウンタＴＳ－Ｔを制御部１４３に備えるものとする。また、通信装置１０１乃至１０４は、カウンタＴＳ－Ｌをそれぞれの制御部（図１に示す制御部１４３に相当）に備えるものとする。 Here, it is assumed that the communication apparatus 100 includes the counter TS-T in the control unit 143. The communication apparatuses 101 to 104 are provided with a counter TS-L in each control unit (corresponding to the control unit 143 shown in FIG. 1).
　最初に、通信装置１００の制御部１４３は、通信装置１０１乃至１０４にどのＴｉｍｅ－ｓｅｇｍｅｎｔを割り当てるかを決定する。例えば、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（００）ｂのタイミングで通信装置１０１とデータ交換を行うと決定する。また、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（０１）ｂのタイミングで通信装置１０２とデータ交換を行うと決定する。また、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（１０）ｂのタイミングで通信装置１０３とデータ交換を行うと決定する。また、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（１１）ｂのタイミングで通信装置１０４とデータ交換を行うと決定する。なお、（００）ｂはビット表現であり、（０１１）ｂは、３ビットを意味し、値は３であることを示す。 First, the control unit 143 of the communication apparatus 100 determines which time-segment is allocated to the communication apparatuses 101 to 104. For example, the control unit 143 of the communication device 100 determines to exchange data with the communication device 101 at the timing of TS−T = (00) b. Further, the control unit 143 of the communication apparatus 100 determines to exchange data with the communication apparatus 102 at the timing of TS−T = (01) b. In addition, the control unit 143 of the communication apparatus 100 determines to exchange data with the communication apparatus 103 at the timing of TS−T = (10) b. In addition, the control unit 143 of the communication device 100 determines to exchange data with the communication device 104 at the timing of TS−T = (11) b. Note that (00) b is a bit representation, (011) b means 3 bits, and the value is 3.
　続いて、通信装置１００は、上述した決定内容に応じて通信装置１０１乃至１０４のそれぞれにＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を送信する（２１１、２１３、２１５、２１７）。すなわち、通信装置１００は、上述した決定内容に応じたタイミングで通信装置１０１乃至１０４のそれぞれにＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を送信する（２１１、２１３、２１５、２１７）。 Subsequently, the communication device 100 transmits an association request 2 to each of the communication devices 101 to 104 according to the above-described determination content (211, 213, 215, 217). That is, the communication apparatus 100 transmits Association Request 2 to each of the communication apparatuses 101 to 104 at a timing according to the determination content described above (211, 213, 215, 217).
　また、通信装置１００は、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を通信装置１０１に送信した時点（２１１）でＴＳ－Ｔの値を０にリセットする。そして、これ以降、通信装置１００は、Ｔｉｍｅ－ｓｅｇｍｅｎｔが変更される毎にＴＳ－Ｔの値を１ずつ増加させていく。 In addition, the communication device 100 resets the value of TS-T to 0 at the time (211) when the association request 2 is transmitted to the communication device 101. Thereafter, the communication device 100 increases the value of TS-T by 1 each time the Time-segment is changed.
　通信装置１０１乃至１０４は、自装置宛のＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を受信する。また、通信装置１０１乃至１０４は、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を返信した時点（２１２、２１４、２１６、２１８）でＴＳ－Ｌの値を０にリセットする。そして、これ以降、通信装置１０１乃至１０４は、Ｔｉｍｅ－ｓｅｇｍｅｎｔが変更される毎にＴＳ－Ｌの値を１ずつ増加させていく。 The communication devices 101 to 104 receive the association request 2 addressed to itself. Further, the communication apparatuses 101 to 104 reset the value of TS-L to 0 at the time (212, 214, 216, 218) when the response 2 is returned from Association Response2. Thereafter, the communication apparatuses 101 to 104 increase the value of TS-L by 1 each time the Time-segment is changed.
　ここで、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、上述した（Ｂ１）の動作を行う旨を示す情報が、上述した新たに定義されたフィールドに格納される。また、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、上述した（Ｂ１）の動作を行う旨を示す情報以外に、ＴＳ－Ｌがどのような値になった時点で通信装置１００とデータ交換を行うかを示す情報が、上述した新たに定義されたフィールドに格納される。 Here, in the Association Request 2, information indicating that the operation of (B1) described above is performed is stored in the newly defined field described above. In addition, in the Association Request 2, in addition to the information indicating that the operation of (B1) described above is performed, information indicating the value at which TS-L is exchanged with the communication apparatus 100 is displayed. Stored in the newly defined field described above.
　また、上述した新たに定義されたフィールドには、これらに加え、ＴＳ－ＴおよびＴＳ－Ｌのビット幅や最大値等の他の情報を格納するようにしてもよい。例えば、ＴＳ－Ｌのビット幅を２ビットとし、ＴＳ－Ｌ＝（００）ｂとなるＴｉｍｅ－ｓｅｇｍｅｎｔのタイミングでデータ受信とＡＣＫ送信とを実行させるための指示を各通信装置に出すことができる。 In addition to these, other information such as the bit width and maximum value of TS-T and TS-L may be stored in the newly defined field described above. For example, the bit width of TS-L is set to 2 bits, and an instruction for executing data reception and ACK transmission can be issued to each communication device at the timing of Time-segment where TS-L = (00) b. .
　通信装置１００の制御部１４３は、ＴＳ－Ｔの値に応じて、情報提供部１４１を通じて送信するデータを切り替えて動作する。例えば、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（００）ｂの場合には、ＴＤＳ２のタイミングで通信装置１０１にデータを送信する（２１９）。また、例えば、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（０１）ｂの場合には、ＴＤＳ２のタイミングで通信装置１０２にデータを送信する（２２１）。また、例えば、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（１０）ｂの場合には、ＴＤＳ２のタイミングで通信装置１０３にデータを送信する（２２３）。また、例えば、通信装置１００の制御部１４３は、ＴＳ－Ｔ＝（１１）ｂの場合には、ＴＤＳ２のタイミングで通信装置１０４にデータを送信する（２２５）。 The control unit 143 of the communication device 100 operates by switching data to be transmitted through the information providing unit 141 according to the value of TS-T. For example, when TS-T = (00) b, the control unit 143 of the communication apparatus 100 transmits data to the communication apparatus 101 at the timing of TDS2 (219). Further, for example, when TS-T = (01) b, the control unit 143 of the communication device 100 transmits data to the communication device 102 at the timing of TDS2 (221). Further, for example, when TS−T = (10) b, the control unit 143 of the communication apparatus 100 transmits data to the communication apparatus 103 at the timing of TDS2 (223). Further, for example, when TS−T = (11) b, the control unit 143 of the communication device 100 transmits data to the communication device 104 at the timing of TDS2 (225).
　また、通信装置１０１乃至１０４は、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を受信し（２１２、２１４、２１６、２１８）、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を返信（２１３、２１５、２１７、２１９）した直後に送受信を停止する。そして、通信装置１０１乃至１０４は、それぞれが備えるＴＳ－Ｌの値がＴＳ－Ｌ＝（００）ｂとなったＴｉｍｅ－ｓｅｇｍｅｎｔで、データの受信とこれに対する確認応答の送信とを行う（２２０、２２２、２２４、２２６）。この場合に、通信装置１０１乃至１０４の制御部（図１に示す制御部１４３に相当）は、情報取得部（図１に示す情報取得部１４２に相当）を通じてデータの受信を行い、情報提供部（図１に示す情報提供部１４１に相当）を通じて確認応答の送信を行う。 Further, the communication devices 101 to 104 stop the transmission / reception immediately after receiving the Association Request 2 (212, 214, 216, 218) and returning the Association Response 2 (213, 215, 217, 219). Then, the communication apparatuses 101 to 104 receive data and transmit confirmation responses in response to the time-segment with the TS-L value TS-L = (00) b included in each of the communication apparatuses 101 to 104 (220, 222, 224, 226). In this case, the control units (corresponding to the control unit 143 shown in FIG. 1) of the communication devices 101 to 104 receive data through the information acquisition unit (corresponding to the information acquisition unit 142 shown in FIG. 1), and the information providing unit The confirmation response is transmitted through (corresponding to the information providing unit 141 shown in FIG. 1).
　［Ｔａｌｋｅｒの動作例］
　図４は、本技術の実施の形態における通信装置１００によるデータ通信処理の処理手順の一例を示すフローチャートである。図４では、通信装置１００の通信相手（Ｌｉｓｔｅｎｅｒ）を通信装置１０１乃至１０４とする場合の例を示す。 [Example of Talker operation]
FIG. 4 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology. FIG. 4 shows an example in which the communication device (listener) of the communication device 100 is the communication devices 101 to 104.
　最初に、通信装置１００の制御部１４３は、通信装置１０１乃至１０４からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を受信する受信処理を行う（ステップＳ８０１）。すなわち、通信装置１００の制御部１４３は、通信装置１０１乃至１０４からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を受信部１３０に受信させる。そして、通信装置１００の制御部１４３は、そのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を情報取得部１４２から取得する。 First, the control unit 143 of the communication device 100 performs a reception process for receiving the Association Response 1 from the communication devices 101 to 104 (step S801). That is, the control unit 143 of the communication device 100 causes the reception unit 130 to receive the association response 1 from the communication devices 101 to 104. Then, the control unit 143 of the communication apparatus 100 acquires the Association Response 1 from the information acquisition unit 142.
　続いて、通信装置１００の制御部１４３は、Ｔｉｍｅ－ｓｅｇｍｅｎｔの割り当てを行う（ステップＳ８０２）。図４では、図３に示す例と同様に、通信装置１０１にＴＳ－Ｔ＝（００）ｂを割り当て、通信装置１０２にＴＳ－Ｔ＝（０１）ｂを割り当て、通信装置１０３にＴＳ－Ｔ＝（１０）ｂを割り当て、通信装置１０４にＴＳ－Ｔ＝（１１）ｂを割り当てる例を示す。 Subsequently, the control unit 143 of the communication device 100 performs time-segment assignment (step S802). In FIG. 4, as in the example shown in FIG. 3, TS-T = (00) b is assigned to the communication apparatus 101, TS-T = (01) b is assigned to the communication apparatus 102, and TS-T is assigned to the communication apparatus 103. = (10) b is assigned and TS-T = (11) b is assigned to the communication apparatus 104.
　続いて、通信装置１００の制御部１４３は、カウンタＴＳ－Ｔを初期化してＴＳ－Ｔ＝（００）ｂとする（ステップＳ８０３）。続いて、通信装置１００の制御部１４３は、現在のカウンタＴＳ－Ｔの値に割り当てられた通信装置（対象通信装置）とＡｓｓｏｃｉａｔｉｏｎ済であるか否かを判断する（ステップＳ８０４）。 Subsequently, the control unit 143 of the communication apparatus 100 initializes the counter TS-T to TS-T = (00) b (step S803). Subsequently, the control unit 143 of the communication apparatus 100 determines whether or not the communication apparatus (target communication apparatus) assigned to the current value of the counter TS-T has been associated (step S804).
　対象通信装置とＡｓｓｏｃｉａｔｉｏｎ済である場合には（ステップＳ８０４）、通信装置１００の制御部１４３は、対象通信装置に対するデータフレームを送信する送信処理を行う（ステップＳ８０５）。すなわち、通信装置１００の制御部１４３は、対象通信装置に対するデータフレームを情報提供部１４１から送信部１２０に出力させ、送信部１２０から対象通信装置に送信させる（ステップＳ８０５）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで対象通信装置に対するデータフレームを送信させる。 When the association with the target communication apparatus has been completed (step S804), the control unit 143 of the communication apparatus 100 performs a transmission process of transmitting a data frame to the target communication apparatus (step S805). That is, the control unit 143 of the communication device 100 causes the information providing unit 141 to output a data frame for the target communication device to the transmission unit 120, and causes the transmission unit 120 to transmit to the target communication device (step S805). In this case, the control unit 143 of the communication device 100 causes the data frame to be transmitted to the target communication device at the assigned TDS timing.
　続いて、通信装置１００の受信部１３０は、対象通信装置からのデータフレームを受信する（ステップＳ８０６）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで対象通信装置からのデータフレームを受信する。そして、通信装置１００の制御部１４３は、対象通信装置からのデータフレームを情報取得部１４２から取得する（ステップＳ８０６）。 Subsequently, the receiving unit 130 of the communication device 100 receives a data frame from the target communication device (step S806). In this case, the control unit 143 of the communication apparatus 100 receives a data frame from the target communication apparatus at the assigned TDS timing. Then, the control unit 143 of the communication device 100 acquires a data frame from the target communication device from the information acquisition unit 142 (step S806).
　続いて、通信装置１００の制御部１４３は、カウンタＴＳ－Ｔをインクリメントする（ステップＳ８０７）。続いて、通信装置１００の制御部１４３は、通信の終了が指示されたか否かを判断する（ステップＳ８０８）。そして、通信の終了が指示された場合には（ステップＳ８０８）、データ通信処理の動作を終了する。また、通信の終了が指示されていない場合には（ステップＳ８０８）、ステップＳ８０４に戻る。 Subsequently, the control unit 143 of the communication device 100 increments the counter TS-T (step S807). Subsequently, the control unit 143 of the communication apparatus 100 determines whether or not the end of communication is instructed (step S808). If the end of communication is instructed (step S808), the data communication processing operation ends. If the end of communication is not instructed (step S808), the process returns to step S804.
　また、対象通信装置とＡｓｓｏｃｉａｔｉｏｎ済でない場合には（ステップＳ８０４）、通信装置１００の制御部１４３は、対象通信装置に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を送信する送信処理を行う（ステップＳ８０９）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで対象通信装置に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を送信させる。 Further, when the association with the target communication device is not completed (step S804), the control unit 143 of the communication device 100 performs a transmission process of transmitting the Association Request 2 for the target communication device (step S809). In this case, the control unit 143 of the communication device 100 causes the Association Request 2 to be transmitted to the target communication device at the timing of the assigned TDS.
　続いて、通信装置１００の受信部１３０は、対象通信装置からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を受信する受信処理を行う（ステップＳ８１０）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで対象通信装置からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を受信する。そして、通信装置１００の制御部１４３は、対象通信装置からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を情報取得部１４２から取得する（ステップＳ８１０）。なお、ステップＳ８０２乃至Ｓ８０７は、請求の範囲に記載の制御手順の一例である。 Subsequently, the receiving unit 130 of the communication device 100 performs a reception process of receiving the Association Response 2 from the target communication device (step S810). In this case, the control unit 143 of the communication device 100 receives the Association Response 2 from the target communication device at the assigned TDS timing. Then, the control unit 143 of the communication device 100 acquires Association Response 2 from the target communication device from the information acquisition unit 142 (step S810). Note that steps S802 to S807 are an example of a control procedure described in the claims.
　このように、通信装置１００の制御部１４３は、体を信号の伝送媒体とする通信において、複数の受信機器に対するデータの送受信タイミングを指定する制御を行うことができる。そして、通信装置１００の制御部１４３は、その指定された送受信タイミングに従って、複数の受信機器に対するデータの送受信タイミングを切り替える制御を行うことができる。 As described above, the control unit 143 of the communication apparatus 100 can perform control for designating data transmission / reception timings for a plurality of receiving devices in communication using the body as a signal transmission medium. And the control part 143 of the communication apparatus 100 can perform control which switches the transmission / reception timing of the data with respect to a some receiving apparatus according to the designated transmission / reception timing.
　具体的には、通信装置１００の制御部１４３は、複数の通信スロット（ＴＤＳ）により構成される送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）において、データの送信に使用する第１通信スロットと、データの受信に使用する第２通信スロットとを割り当てる。また、通信装置１００の制御部１４３は、複数の受信機器のそれぞれを送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）単位で割り当てる。この場合に、通信装置１００の制御部１４３は、複数の受信機器を順番に送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）単位で割り当てることができる。これらにより、複数の受信機器間で第１通信スロットおよび第２通信スロットを共有することができる。 Specifically, the control unit 143 of the communication device 100 receives a first communication slot used for data transmission and data reception in a transmission / reception section (Time-segment) configured by a plurality of communication slots (TDS). The second communication slot to be used is assigned. In addition, the control unit 143 of the communication device 100 assigns each of the plurality of receiving devices in units of transmission / reception sections (Time-segments). In this case, the control unit 143 of the communication apparatus 100 can assign a plurality of receiving devices in order in units of transmission / reception sections (Time-segments). Accordingly, the first communication slot and the second communication slot can be shared among a plurality of receiving devices.
　また、通信装置１００の制御部１４３は、送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）の数に基づいて、送受信の対象となる送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）に割り当てた受信機器を特定することができる。 Further, the control unit 143 of the communication apparatus 100 can identify the receiving device assigned to the transmission / reception section (Time-segment) to be transmitted / received based on the number of transmission / reception sections (Time-segment).
　［Ｌｉｓｔｅｎｅｒの動作例］
　図５は、本技術の実施の形態における通信装置１０１によるデータ通信処理の処理手順の一例を示すフローチャートである。 [Lister operation example]
FIG. 5 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology.
　なお、図５では、Ｌｉｓｔｅｎｅｒの動作例として通信装置１０１の動作例のみを示し、通信装置１０２乃至１０４の動作例についての説明を省略する。また、図５では、通信装置１００（Ｔａｌｋｅｒ）と通信装置１０１乃至１０４（Ｌｉｓｔｅｎｅｒ）との間で通信が行われる場合の例を示す。 In FIG. 5, only the operation example of the communication device 101 is shown as the operation example of the listener, and the description of the operation examples of the communication devices 102 to 104 is omitted. FIG. 5 shows an example in which communication is performed between the communication device 100 (Talker) and the communication devices 101 to 104 (Listener).
　最初に、通信装置１０１の制御部（図１に示す制御部１４３に相当）は、通信装置１００に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を送信する送信処理を行う（ステップＳ８２１）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ１を送信する。 First, the control unit (corresponding to the control unit 143 shown in FIG. 1) of the communication apparatus 101 performs a transmission process of transmitting Association Response 1 to the communication apparatus 100 (step S821). In this case, the control unit of the communication apparatus 101 transmits Association Response 1 for the communication apparatus 100 at the assigned TDS timing.
　続いて、通信装置１０１の制御部は、通信装置１００からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を受信する受信処理を行う（ステップＳ８２２）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を受信する。そして、通信装置１０１の制御部は、通信装置１００からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を取得する（ステップＳ８２２）。 Subsequently, the control unit of the communication apparatus 101 performs a reception process for receiving the Association Request 2 from the communication apparatus 100 (step S822). In this case, the control unit of the communication apparatus 101 receives the Association Request 2 from the communication apparatus 100 at the assigned TDS timing. And the control part of the communication apparatus 101 acquires Association Request2 from the communication apparatus 100 (step S822).
　続いて、通信装置１０１の制御部は、通信装置１００からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２の受信が成功したか否かを判断する（ステップＳ８２３）。そして、その受信に失敗した場合には（ステップＳ８２３）、ステップＳ８２２に戻り、通信装置１００からのＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を再度受信する。 Subsequently, the control unit of the communication apparatus 101 determines whether or not the reception of the Association Request 2 from the communication apparatus 100 is successful (step S823). If the reception fails (step S823), the process returns to step S822, and Association Request 2 from the communication device 100 is received again.
　その受信に成功した場合には（ステップＳ８２３）、通信装置１０１の制御部は、カウンタＴＳ－Ｌを初期化してＴＳ－Ｌ＝（００）ｂとする（ステップＳ８２４）。 If the reception is successful (step S823), the control unit of the communication apparatus 101 initializes the counter TS-L to TS-L = (00) b (step S824).
　続いて、通信装置１０１の制御部は、通信装置１００に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を送信する送信処理を行う（ステップＳ８２５）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を送信する。続いて、通信装置１０１の制御部は、カウンタＴＳ－Ｌをインクリメントする（ステップＳ８２６）。 Subsequently, the control unit of the communication apparatus 101 performs a transmission process for transmitting the Association Response 2 to the communication apparatus 100 (step S825). In this case, the control unit of the communication apparatus 101 transmits an association response 2 to the communication apparatus 100 at the assigned TDS timing. Subsequently, the control unit of the communication apparatus 101 increments the counter TS-L (step S826).
　続いて、通信装置１０１の制御部は、ＴＳ－Ｌ＝（００）ｂであるか否かを判断する（ステップＳ８２７）。ＴＳ－Ｌ＝（００）ｂである場合には（ステップＳ８２７）、通信装置１０１の制御部は、通信装置１００からのデータフレームを受信する受信処理を行う（ステップＳ８２９）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００からのデータフレームを受信する。 Subsequently, the control unit of the communication apparatus 101 determines whether TS-L = (00) b is satisfied (step S827). When TS-L = (00) b (step S827), the control unit of the communication apparatus 101 performs a reception process of receiving a data frame from the communication apparatus 100 (step S829). In this case, the control unit of the communication apparatus 101 receives the data frame from the communication apparatus 100 at the assigned TDS timing.
　続いて、通信装置１０１の制御部は、通信装置１００からのデータフレームの受信が成功したか否かを判断する（ステップＳ８３０）。そして、その受信に失敗した場合には（ステップＳ８３０）、ステップＳ８２６に戻る。 Subsequently, the control unit of the communication apparatus 101 determines whether or not the data frame from the communication apparatus 100 has been successfully received (step S830). If the reception fails (step S830), the process returns to step S826.
　その受信に成功した場合には（ステップＳ８３０）、通信装置１０１の制御部は、通信装置１００に対するデータフレーム（ＡＣＫに相当）を送信する送信処理を行う（ステップＳ８３１）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００に対するデータフレーム（ＡＣＫに相当）を送信する。 If the reception is successful (step S830), the control unit of the communication apparatus 101 performs a transmission process of transmitting a data frame (corresponding to ACK) to the communication apparatus 100 (step S831). In this case, the control unit of the communication apparatus 101 transmits a data frame (corresponding to ACK) to the communication apparatus 100 at the assigned TDS timing.
　続いて、通信装置１０１の制御部は、通信の終了が指示されたか否かを判断する（ステップＳ８３２）。そして、通信の終了が指示された場合には（ステップＳ８３２）、データ通信処理の動作を終了する。また、通信の終了が指示されていない場合には（ステップＳ８３２）、ステップＳ８２６に戻る。 Subsequently, the control unit of the communication apparatus 101 determines whether or not the end of communication is instructed (step S832). If the end of communication is instructed (step S832), the data communication processing operation ends. If the end of communication is not instructed (step S832), the process returns to step S826.
　また、ＴＳ－Ｌ＝（００）ｂでない場合には（ステップＳ８２７）、通信装置１０１の制御部は、ＴＤＳ８になるまで待機して（ステップＳ８２８）、ステップＳ８２６に戻る。なお、ステップＳ８２６乃至Ｓ８３１は、請求の範囲に記載の制御手順の一例である。 If TS-L = (00) b is not satisfied (step S827), the control unit of the communication apparatus 101 waits until TDS8 is reached (step S828), and returns to step S826. Note that steps S826 to S831 are an example of a control procedure described in the claims.
　このように、通信装置１０１の制御部は、体を信号の伝送媒体とする通信において、送信機器から指定された送受信タイミングに従って、送信機器との間でデータの送受信を行うよう制御することができる。 As described above, the control unit of the communication apparatus 101 can perform control to transmit / receive data to / from the transmission device in accordance with the transmission / reception timing designated by the transmission device in communication using the body as a signal transmission medium. .
　具体的には、複数の通信スロット（ＴＤＳ）により構成される送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）において、データの受信に使用する第１通信スロットと、データの送信に使用する第２通信スロットとが割り当てられている。この場合に、通信装置１０１の制御部は、通信装置１０１に割り当てられた送受信区間における第１通信スロットを用いてデータの受信を行い、その送受信区間における第２通信スロットを用いてデータの送信を行う。 Specifically, in a transmission / reception section (Time-segment) configured by a plurality of communication slots (TDS), a first communication slot used for data reception and a second communication slot used for data transmission are allocated. It has been. In this case, the control unit of the communication apparatus 101 receives data using the first communication slot in the transmission / reception section assigned to the communication apparatus 101, and transmits data using the second communication slot in the transmission / reception section. Do.
　また、通信装置１０１の制御部は、送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）の数に基づいて、送受信タイミングとなる送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）を特定することができる。 Further, the control unit of the communication apparatus 101 can specify a transmission / reception section (Time-segment) that is a transmission / reception timing based on the number of transmission / reception sections (Time-segment).
　［Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒに基づいて自装置宛のデータを識別する場合の通信例］
　図６は、本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。 [Example of communication when identifying data addressed to own device based on Sequence number]
FIG. 6 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
　図６では、通信装置１００をＴａｌｋｅｒとし、通信装置１０１および通信装置１０２をＬｉｓｔｅｎｅｒとする場合の例を示す。また、図６では、通信装置１００が通信装置１０１および通信装置１０２に対してそれぞれ異なるデータを送信し、通信装置１０１および通信装置１０２のそれぞれから確認応答（ＡＣＫ）を受信する場合の例を示す。また、図６では、上述した（Ｂ２）の動作を行う場合の例を示す。また、図６では、各通信装置における受信が失敗せずに正常に行われる場合の動作例を示す。 FIG. 6 shows an example in which the communication device 100 is a Talker and the communication device 101 and the communication device 102 are Listeners. FIG. 6 illustrates an example in which the communication apparatus 100 transmits different data to the communication apparatus 101 and the communication apparatus 102 and receives an acknowledgment (ACK) from each of the communication apparatus 101 and the communication apparatus 102. . FIG. 6 shows an example in which the above-described operation (B2) is performed. FIG. 6 shows an operation example when reception in each communication device is normally performed without failure.
　通信装置１００は、状態変数ＳＥＱ－Ｔを制御部１４３に備えるものとする。また、通信装置１０１および通信装置１０２は、状態変数ＳＥＱ－Ｌをそれぞれの制御部（図１に示す制御部１４３に相当）に備えるものとする。 The communication apparatus 100 includes a state variable SEQ-T in the control unit 143. Communication device 101 and communication device 102 are provided with state variable SEQ-L in their respective control units (corresponding to control unit 143 shown in FIG. 1).
　ここで、状態変数ＳＥＱ－Ｔには、通信装置１００が送信するデータフレームに付加するＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒが決定された時点で、そのＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値がセットされる。 Here, the value of the Sequence number is set in the state variable SEQ-T when the Sequence number to be added to the data frame transmitted by the communication apparatus 100 is determined.
　また、状態変数ＳＥＱ－Ｌには、通信装置１００から送信されたデータフレームを受信した時点で、そのデータフレームに記載のＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値がセットされる。 Further, when the data frame transmitted from the communication apparatus 100 is received, the value of the Sequence number described in the data frame is set in the state variable SEQ-L.
　最初に、通信装置１００の制御部１４３は、通信装置１０１および通信装置１０２にどのＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを割り当てるかを決定する。例えば、通信装置１０１は、ＳＥＱ－Ｔ＝（００）ｂのタイミングで通信装置１００とデータ交換を行うと決定する。また、通信装置１０２は、ＳＥＱ－Ｔ＝（１０）ｂのタイミングで通信装置１００とデータ交換を行うと決定する。 First, the control unit 143 of the communication device 100 determines which sequence number is assigned to the communication device 101 and the communication device 102. For example, the communication apparatus 101 determines to exchange data with the communication apparatus 100 at the timing of SEQ-T = (00) b. Further, the communication apparatus 102 determines to exchange data with the communication apparatus 100 at the timing of SEQ-T = (10) b.
　通信装置１００は、上述した決定内容に応じて通信装置１０１および通信装置１０２に対して、それぞれ異なるＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を送信する（２４１、２４３）。 The communication device 100 transmits different Association Request 2 to the communication device 101 and the communication device 102 in accordance with the determination content described above (241, 243).
　ここで、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、上述した（Ｂ２）の動作を行う旨を示す情報が、上述した新たに定義されたフィールドに格納される。また、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、上述した（Ｂ２）の動作を行う旨を示す情報以外に、ＳＥＱ－Ｌがどのような値のときに通信装置１００とデータ交換を行うかを示す情報が、上述した新たに定義されたフィールドに格納される。 Here, in the Association Request 2, information indicating that the operation (B2) described above is performed is stored in the newly defined field described above. In addition, in the Association Request 2, in addition to the information indicating that the operation of (B2) described above is performed, information indicating what value the SEQ-L is to exchange data with the communication apparatus 100 is described above. Stored in the newly defined field.
　例えば、通信装置１０１に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、ＳＥＱ－Ｌ＝（００）ｂとなるタイミングでデータ受信とＡＣＫ送信とを実行させるための指示情報を格納することができる。また、例えば、通信装置１０２に対するＡｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２には、ＳＥＱ－Ｌ＝（１０）ｂとなるタイミングでデータ受信とＡＣＫ送信とを実行させるための指示情報を格納することができる。 For example, in the Association Request 2 for the communication apparatus 101, instruction information for executing data reception and ACK transmission at a timing of SEQ-L = (00) b can be stored. Further, for example, in the Association Request 2 for the communication apparatus 102, instruction information for executing data reception and ACK transmission at the timing of SEQ-L = (10) b can be stored.
　このように、通信装置１００の制御部１４３は、ＳＥＱ－Ｔの値に応じて、情報提供部１４１を通じて送信するデータを切り替えて動作する。 Thus, the control unit 143 of the communication apparatus 100 operates by switching data to be transmitted through the information providing unit 141 according to the value of SEQ-T.
　また、例えば、通信装置１０１は、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を受信し（２４１）、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を返信（２４２）した直後に送信を停止する。そして、通信装置１０１の制御部は、ＳＥＱ－Ｌの値がＳＥＱ－Ｌ＝（００）ｂとなるタイミングで情報取得部を通じたデータ受信（２４５）と情報提供部を通じた確認応答の送信（２４６）とを行う。 Also, for example, the communication apparatus 101 stops the transmission immediately after receiving Association Request 2 (241) and returning Association Response 2 (242). Then, the control unit of the communication apparatus 101 receives data (245) through the information acquisition unit and transmits a confirmation response through the information provision unit (246) at the timing when the value of SEQ-L becomes SEQ-L = (00) b. ) And do.
　また、例えば、通信装置１０２は、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｑｕｅｓｔ２を受信し（２４３）、Ａｓｓｏｃｉａｔｉｏｎ　Ｒｅｓｐｏｎｓｅ２を返信（２４４）した直後に送信を停止する。そして、通信装置１０２の制御部は、ＳＥＱ－Ｌの値がＳＥＱ－Ｌ＝（１０）ｂとなるタイミングで情報取得部を通じたデータ受信（２４７）と情報提供部を通じた確認応答の送信（２４８）とを行う。 Also, for example, the communication device 102 stops the transmission immediately after receiving the Association Request 2 (243) and returning the Association Response 2 (244). Then, the control unit of the communication apparatus 102 receives data (247) through the information acquisition unit and transmits a confirmation response through the information provision unit (248) at the timing when the value of SEQ-L becomes SEQ-L = (10) b. ) And do.
　なお、通信装置１０１および通信装置１０２のそれぞれの制御部は、内部に有するＳＥＱ－Ｌを更新するため、全てのＴｉｍｅ－ｓｅｇｍｅｎｔで通信装置１００からのデータフレームを受信し、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを取得する必要がある。しかしながら、通信装置１０１および通信装置１０２が通信装置１００からのデータフレームの受信に失敗した場合には、自装置のＳＥＱ－Ｌを更新することができない。この場合には、ＳＥＱ－Ｌの値によらず、ＮＡＣＫを送信する。 Note that each control unit of the communication device 101 and the communication device 102 needs to receive a data frame from the communication device 100 and acquire a sequence number in all time-segments in order to update the SEQ-L included therein. There is. However, when the communication device 101 and the communication device 102 fail to receive the data frame from the communication device 100, the SEQ-L of the own device cannot be updated. In this case, NACK is transmitted regardless of the value of SEQ-L.
　次に、通信相手の通信装置が送信したデータフレームを正しく受信できなかった場合に行う再送方法の例を図７および図８に示す。 Next, FIGS. 7 and 8 show examples of the retransmission method performed when the data frame transmitted by the communication apparatus of the communication partner cannot be correctly received.
　［データフレームの受信に失敗した場合の通信例］
　図７は、本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。 [Example of communication when data frame reception fails]
FIG. 7 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
　図７に示すように、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（００）ｂの場合に、通信装置１０１が、通信装置１００が送信したデータフレームの受信（２５３）に失敗した場合を想定する。 As shown in FIG. 7, it is assumed that the communication device 101 fails to receive (253) the data frame transmitted by the communication device 100 when Sequence number = (00) b.
　この場合には、通信装置１０１は、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒをＡｓｓｏｃｉａｔｉｏｎにおいて指定された値（ＳＥＱ－Ｌ＝（００）ｂの値）よりも１小さい（１１）ｂに設定する。そして、通信装置１０１は、直前に送信したデータフレームのＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ部分を新たなＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒに上書きして送信する（２５４）。通信装置１００は、そのデータフレーム（ＮＡＣＫに相当）を受信する（２５４）。この場合には、通信装置１００は、通信装置１０１がＮＡＣＫを返却したと判断して、再度同じデータフレームを送信する（２５５）。 In this case, the communication apparatus 101 sets the Sequence number to (11) b, which is 1 smaller than the value (SEQ-L = (00) b) specified in the Association. And the communication apparatus 101 overwrites the Sequence number part of the data frame transmitted immediately before with a new Sequence number, and transmits (254). The communication device 100 receives the data frame (corresponding to NACK) (254). In this case, the communication device 100 determines that the communication device 101 has returned NACK, and transmits the same data frame again (255).
　また、通信装置１００が、通信装置１０１が送信したデータフレームの受信（２５６）に失敗した場合を想定する。この場合には、通信装置１００は、直前に通信装置１０１に対して送信したデータフレームと同じものを再度送信する（２５７）。 It is assumed that the communication apparatus 100 fails to receive (256) the data frame transmitted by the communication apparatus 101. In this case, the communication apparatus 100 transmits again the same data frame that was transmitted to the communication apparatus 101 immediately before (257).
　［データフレームの受信に失敗した場合の通信例］
　図８は、本技術の実施の形態における通信装置１００乃至１０２間でデータのやりとりを行う場合の通信例を示す図である。 [Example of communication when data frame reception fails]
FIG. 8 is a diagram illustrating a communication example when data is exchanged between the communication apparatuses 100 to 102 according to the embodiment of the present technology.
　図８に示すように、通信装置１０１および通信装置１０２が同時に、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１０）ｂのときに通信装置１００が送信したデータフレームの受信に失敗した場合（２６１）を想定する。この場合には、通信装置１０１および通信装置１０２が同時にデータフレーム（ＮＡＣＫに相当）を返却するため（２６２、２６３）、フレームの衝突が発生し、通信装置１００も応答の受信に失敗する。 As shown in FIG. 8, it is assumed that the communication device 101 and the communication device 102 simultaneously fail to receive a data frame transmitted by the communication device 100 when Sequence number = (10) b (261). In this case, since the communication device 101 and the communication device 102 simultaneously return data frames (corresponding to NACK) (262, 263), a frame collision occurs, and the communication device 100 also fails to receive a response.
　このように応答の受信に失敗した場合には、通信装置１００は、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１０）ｂで送信したデータフレームと同じものを再度送信する（２６４）。 When the reception of the response fails as described above, the communication apparatus 100 transmits again the same data frame that was transmitted with the Sequence number = (10) b (264).
　また、通信装置１０１が、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（００）ｂのときに通信装置１００が送信したデータフレームの受信（２６６）に成功し、通信装置１０２が、同フレームの受信に失敗した場合を想定する。この場合には、通信装置１０１は、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（０１）ｂとしてデータフレーム（ＡＣＫに相当）を返却する（２６７）。また、通信装置１０２は、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（０１）ｂとしてデータフレーム（ＮＡＣＫに相当）を返却する（２６８）。 In addition, it is assumed that the communication apparatus 101 succeeds in receiving (266) the data frame transmitted by the communication apparatus 100 when Sequence number = (00) b, and the communication apparatus 102 fails to receive the frame. . In this case, the communication apparatus 101 returns a data frame (corresponding to ACK) as Sequence number = (01) b (267). In addition, the communication apparatus 102 returns a data frame (corresponding to NACK) as Sequence number = (01) b (268).
　このように、通信装置１０１および通信装置１０２が同時に送信を行う場合（２６７、２６８）には、フレームの衝突が発生し、通信装置１００は応答の受信に失敗する。このため、通信装置１００は、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１０）ｂで送信したデータフレームと同じものを再度送信する（２６９）。 As described above, when the communication device 101 and the communication device 102 perform transmission simultaneously (267, 268), a frame collision occurs, and the communication device 100 fails to receive a response. For this reason, the communication apparatus 100 transmits again the same data frame that was transmitted by Sequence number = (10) b (269).
　このように、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒに基づいて、通信装置１０１および通信装置１０２の識別を行うことにより、再送制御を伴った通信が可能である。 Thus, communication with retransmission control is possible by identifying the communication device 101 and the communication device 102 based on the sequence number.
　［Ｔａｌｋｅｒの動作例］
　図９は、本技術の実施の形態における通信装置１００によるデータ通信処理の処理手順の一例を示すフローチャートである。図９では、通信装置１００の通信相手（Ｌｉｓｔｅｎｅｒ）を通信装置１０１および通信装置１０２とする場合の例を示す。 [Example of Talker operation]
FIG. 9 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 100 according to the embodiment of the present technology. FIG. 9 illustrates an example in which the communication device 101 and the communication device 102 are communication partners (listeners) of the communication device 100.
　最初に、通信装置１００の制御部１４３は、各通信装置に対するＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの割り当てと、各通信装置との間でＡｓｓｏｃｉａｔｉｏｎによる合意を行う（ステップＳ８４１）。図９では、図６乃至図８に示す例と同様に、通信装置１０１にＳＥＱ－Ｔ＝（００）ｂを割り当て、通信装置１０２にＳＥＱ－Ｔ＝（１０）ｂを割り当てる例を示す。 First, the control unit 143 of the communication device 100 assigns a sequence number to each communication device and makes an agreement by association with each communication device (step S841). 9 shows an example in which SEQ-T = (00) b is assigned to the communication apparatus 101 and SEQ-T = (10) b is assigned to the communication apparatus 102, as in the examples shown in FIGS.
　続いて、通信装置１００の制御部１４３は、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを初期化してＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（００）ｂとする（ステップＳ８４２）。ここで、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒは、送信対象となるデータフレームに含めるＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを意味する。 Subsequently, the control unit 143 of the communication device 100 initializes the transmission sequence number and sets the sequence number = (00) b (step S842). Here, the transmission sequence number means a sequence number included in the data frame to be transmitted.
　続いて、通信装置１００の制御部１４３は、状態変数ＳＥＱ－Ｔを送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値に更新する（ステップＳ８４３）。 Subsequently, the control unit 143 of the communication apparatus 100 updates the state variable SEQ-T to the value of the transmission sequence number (step S843).
　続いて、通信装置１００の制御部１４３は、ＳＥＱ－Ｔ＝（００）ｂであるか否かを判断する（ステップＳ８４４）。ＳＥＱ－Ｔ＝（００）ｂである場合には（ステップＳ８４４）、通信装置１００の制御部１４３は、通信装置１０１に対するデータフレームを送信する送信処理を行う（ステップＳ８４５）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで通信装置１０１に対するデータフレームを送信させる。 Subsequently, the control unit 143 of the communication apparatus 100 determines whether or not SEQ-T = (00) b (step S844). When SEQ-T = (00) b (step S844), the control unit 143 of the communication apparatus 100 performs a transmission process of transmitting a data frame to the communication apparatus 101 (step S845). In this case, the control unit 143 of the communication apparatus 100 causes the data frame to be transmitted to the communication apparatus 101 at the assigned TDS timing.
　続いて、通信装置１００の制御部１４３は、通信装置１０１からのデータフレームを受信する受信処理を行う（ステップＳ８４６）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで通信装置１０１からのデータフレームを受信する。そして、通信装置１００の制御部１４３は、通信装置１０１からのデータフレームの受信に成功したか否かを判断する（ステップＳ８４７）。その受信に失敗した場合には（ステップＳ８４７）、ステップＳ８４５に戻る。 Subsequently, the control unit 143 of the communication device 100 performs reception processing for receiving a data frame from the communication device 101 (step S846). In this case, the control unit 143 of the communication apparatus 100 receives the data frame from the communication apparatus 101 at the assigned TDS timing. Then, the control unit 143 of the communication device 100 determines whether or not the data frame from the communication device 101 has been successfully received (step S847). If the reception has failed (step S847), the process returns to step S845.
　その受信に成功した場合には（ステップＳ８４７）、通信装置１００の制御部１４３は、受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（０１）ｂであるか否かを判断する（ステップＳ８４８）。ここで、受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒは、受信に成功したデータフレームに含まれるＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを意味する。 If the reception is successful (step S847), the control unit 143 of the communication apparatus 100 determines whether or not the reception sequence number = (01) b (step S848). Here, the reception sequence number means a sequence number included in the data frame that has been successfully received.
　受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（０１）ｂでない場合には（ステップＳ８４８）、通信装置１０１がデータフレームの受信に失敗したことが想定されるため、ステップＳ８４５に戻る。 If the received sequence number is not (01) b (step S848), it is assumed that the communication apparatus 101 has failed to receive the data frame, and the process returns to step S845.
　受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（０１）ｂである場合には（ステップＳ８４８）、通信装置１００の制御部１４３は、通信装置１０２に次に送信するデータの提供の準備を行う（ステップＳ８４９）。続いて、通信装置１００の制御部１４３は、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１０）ｂとする（ステップＳ８５０）。 When the reception sequence number = (01) b (step S848), the control unit 143 of the communication device 100 prepares for provision of data to be transmitted next to the communication device 102 (step S849). Subsequently, the control unit 143 of the communication device 100 sets transmission sequence number = (10) b (step S850).
　続いて、通信装置１００の制御部１４３は、通信の終了が指示されたか否かを判断する（ステップＳ８５１）。そして、通信の終了が指示された場合には（ステップＳ８５１）、データ通信処理の動作を終了する。また、通信の終了が指示されていない場合には（ステップＳ８５１）、ステップＳ８４３に戻る。 Subsequently, the control unit 143 of the communication device 100 determines whether or not the end of communication is instructed (step S851). If the end of communication is instructed (step S851), the data communication processing operation ends. If the end of communication is not instructed (step S851), the process returns to step S843.
　また、ＳＥＱ－Ｔ＝（００）ｂでない場合（ＳＥＱ－Ｔ＝（１０）ｂである場合）には（ステップＳ８４４）、通信装置１００の制御部１４３は、通信装置１０２に対するデータフレームを送信する送信処理を行う（ステップＳ８５２）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで通信装置１０２に対するデータフレームを送信させる。 If SEQ-T = (00) b is not satisfied (SEQ-T = (10) b) (step S844), the control unit 143 of the communication apparatus 100 transmits a data frame to the communication apparatus 102. Transmission processing is performed (step S852). In this case, the control unit 143 of the communication device 100 causes a data frame to be transmitted to the communication device 102 at the assigned TDS timing.
　続いて、通信装置１００の制御部１４３は、通信装置１０２からのデータフレームを受信する受信処理を行う（ステップＳ８５３）。この場合に、通信装置１００の制御部１４３は、割り当てられているＴＤＳのタイミングで通信装置１０２からのデータフレームを受信する。そして、通信装置１００の制御部１４３は、通信装置１０２からのデータフレームの受信に成功したか否かを判断する（ステップＳ８５４）。その受信に失敗した場合には（ステップＳ８５４）、ステップＳ８５２に戻る。 Subsequently, the control unit 143 of the communication device 100 performs a reception process of receiving a data frame from the communication device 102 (step S853). In this case, the control unit 143 of the communication apparatus 100 receives the data frame from the communication apparatus 102 at the assigned TDS timing. Then, the control unit 143 of the communication device 100 determines whether or not the data frame from the communication device 102 has been successfully received (step S854). If the reception has failed (step S854), the process returns to step S852.
　その受信に成功した場合には（ステップＳ８５４）、通信装置１００の制御部１４３は、受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１１）ｂであるか否かを判断する（ステップＳ８５５）。 If the reception is successful (step S854), the control unit 143 of the communication apparatus 100 determines whether or not the reception sequence number = (11) b (step S855).
　受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１１）ｂでない場合には（ステップＳ８５５）、通信装置１０２がデータフレームの受信に失敗したことが想定されるため、ステップＳ８５２に戻る。 If the received sequence number is not (11) b (step S855), it is assumed that the communication apparatus 102 has failed to receive the data frame, and the process returns to step S852.
　受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（１１）ｂである場合には（ステップＳ８５５）、通信装置１００の制御部１４３は、通信装置１０１に次に送信するデータの提供の準備を行う（ステップＳ８５６）。続いて、通信装置１００の制御部１４３は、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒ＝（００）ｂとする（ステップＳ８５７）。なお、ステップＳ８４１乃至Ｓ８５０、Ｓ８５２乃至Ｓ８５７は、請求の範囲に記載の制御手順の一例である。 When the reception sequence number = (11) b (step S855), the control unit 143 of the communication device 100 prepares to provide data to be transmitted next to the communication device 101 (step S856). Subsequently, the control unit 143 of the communication apparatus 100 sets transmission sequence number = (00) b (step S857). Note that steps S841 to S850 and S852 to S857 are examples of the control procedure described in the claims.
　このように、通信装置１００の制御部１４３は、送信対象となるデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信の対象となる送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）に割り当てた受信機器を特定することができる。 As described above, the control unit 143 of the communication device 100 receives the receiving device assigned to the transmission / reception section (Time-segment) to be transmitted / received based on the sequence number stored in the header of the data frame of the data to be transmitted. Can be specified.
　［Ｌｉｓｔｅｎｅｒの動作例］
　図１０は、本技術の実施の形態における通信装置１０１によるデータ通信処理の処理手順の一例を示すフローチャートである。 [Lister operation example]
FIG. 10 is a flowchart illustrating an example of a processing procedure of data communication processing by the communication device 101 according to the embodiment of the present technology.
　なお、図１０では、Ｌｉｓｔｅｎｅｒの動作例として通信装置１０１の動作例のみを示し、通信装置１０２の動作例についての説明を省略する。また、図１０では、通信装置１００（Ｔａｌｋｅｒ）と通信装置１０１および通信装置１０２（Ｌｉｓｔｅｎｅｒ）との間で通信が行われる場合の例を示す。 In FIG. 10, only the operation example of the communication device 101 is shown as an example of the listener operation, and the description of the operation example of the communication device 102 is omitted. FIG. 10 illustrates an example in which communication is performed between the communication device 100 (Talker), the communication device 101, and the communication device 102 (Listener).
　最初に、通信装置１０１の制御部（図１に示す制御部１４３に相当）は、通信装置１００との間でＡｓｓｏｃｉａｔｉｏｎによる合意が行われる（ステップＳ８６１）。この場合に、通信装置１０１にはＳＥＱ－Ｌ＝（００）ｂが設定される。なお、通信装置１０２の場合にはＳＥＱ－Ｌ＝（１０）ｂが設定される。 First, the control unit (corresponding to the control unit 143 shown in FIG. 1) of the communication apparatus 101 makes an agreement with the communication apparatus 100 by association (step S861). In this case, SEQ-L = (00) b is set in the communication apparatus 101. In the case of the communication apparatus 102, SEQ-L = (10) b is set.
　続いて、通信装置１０１の制御部は、通信装置１００からのデータフレームを受信する受信処理を行う（ステップＳ８６２）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００からのデータフレームを受信する。そして、通信装置１０１の制御部は、通信装置１００からのデータフレームを取得する（ステップＳ８６２）。 Subsequently, the control unit of the communication apparatus 101 performs reception processing for receiving a data frame from the communication apparatus 100 (step S862). In this case, the control unit of the communication apparatus 101 receives the data frame from the communication apparatus 100 at the assigned TDS timing. And the control part of the communication apparatus 101 acquires the data frame from the communication apparatus 100 (step S862).
　続いて、通信装置１０１の制御部は、通信装置１００からのデータフレームの受信が成功したか否かを判断する（ステップＳ８６３）。そして、その受信に成功した場合には（ステップＳ８６３）、通信装置１０１の制御部は、状態変数ＳＥＱ－Ｌを、受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値に更新する（ステップＳ８６４）。ここで、受信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒは、受信に成功したデータフレームに含まれるＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを意味する。 Subsequently, the control unit of the communication device 101 determines whether or not the data frame has been successfully received from the communication device 100 (step S863). If the reception is successful (step S863), the control unit of the communication apparatus 101 updates the state variable SEQ-L to the value of the reception sequence number (step S864). Here, the reception sequence number means a sequence number included in the data frame that has been successfully received.
　続いて、通信装置１０１の制御部は、更新後の状態変数ＳＥＱ－Ｌが、Ａｓｓｏｃｉａｔｉｏｎで指定された値（通信装置１０１の場合にはＳＥＱ－Ｌ＝（００）ｂ）であるか否かを判断する（ステップＳ８６５）。更新後の状態変数ＳＥＱ－Ｌが、Ａｓｓｏｃｉａｔｉｏｎで指定された値でない場合には（ステップＳ８６５）、受信したデータを破棄し、ステップＳ８６９に進む。 Subsequently, the control unit of the communication apparatus 101 determines whether or not the updated state variable SEQ-L is a value specified by Association (SEQ-L = (00) b in the case of the communication apparatus 101). Judgment is made (step S865). If the updated state variable SEQ-L is not the value specified by Association (step S865), the received data is discarded, and the process proceeds to step S869.
　続いて、通信装置１０１の制御部は、通信の終了が指示されたか否かを判断する（ステップＳ８６９）。そして、通信の終了が指示された場合には（ステップＳ８６９）、データ通信処理の動作を終了する。また、通信の終了が指示されていない場合には（ステップＳ８６９）、ステップＳ８６２に戻る。 Subsequently, the control unit of the communication apparatus 101 determines whether or not the end of communication is instructed (step S869). If the end of communication is instructed (step S869), the data communication processing operation ends. If the end of communication is not instructed (step S869), the process returns to step S862.
　更新後の状態変数ＳＥＱ－Ｌが、Ａｓｓｏｃｉａｔｉｏｎで指定された値である場合には（ステップＳ８６５）、自装置宛のデータであると判断することができる。そこで、通信装置１０１の制御部は、通信装置１００から受信したデータフレームを記憶部１５０に記憶させる（ステップＳ８６６）。そして、通信装置１０１の制御部は、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値を、Ａｓｓｏｃｉａｔｉｏｎで指定された値＋１（通信装置１０１の場合にはＳＥＱ－Ｌ＝（０１）ｂ）に設定する（ステップＳ８６７）。ここで、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒは、送信対象となるデータフレームに含めるＳｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを意味する。 When the updated state variable SEQ-L is a value specified by Association (step S865), it can be determined that the data is addressed to the own device. Therefore, the control unit of the communication apparatus 101 stores the data frame received from the communication apparatus 100 in the storage unit 150 (step S866). Then, the control unit of the communication apparatus 101 sets the value of the transmission sequence number to the value specified by Association + 1 (SEQ-L = (01) b in the case of the communication apparatus 101) (step S867). Here, the transmission sequence number means a sequence number included in the data frame to be transmitted.
　続いて、通信装置１０１の制御部は、通信装置１００に対するデータフレーム（ＡＣＫに相当）を送信する送信処理を行う（ステップＳ８６８）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００に対するデータフレーム（ＡＣＫに相当）を送信させる。 Subsequently, the control unit of the communication apparatus 101 performs a transmission process for transmitting a data frame (corresponding to ACK) to the communication apparatus 100 (step S868). In this case, the control unit of the communication apparatus 101 transmits a data frame (corresponding to ACK) to the communication apparatus 100 at the assigned TDS timing.
　また、通信装置１００からのデータフレームの受信に失敗した場合には（ステップＳ８６３）、通信装置１０１の制御部は、送信Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒの値を、Ａｓｓｏｃｉａｔｉｏｎで指定された値－１に設定する（ステップＳ８６７）。すなわち、通信装置１０１の場合には、ＳＥＱ－Ｌ＝（１１）ｂが設定される。 If reception of the data frame from the communication device 100 has failed (step S863), the control unit of the communication device 101 sets the value of the transmission sequence number to the value −1 specified in the association (step 863). S867). That is, in the case of the communication apparatus 101, SEQ-L = (11) b is set.
　続いて、通信装置１０１の制御部は、通信装置１００に対するデータフレーム（ＮＡＣＫに相当）を送信する送信処理を行う（ステップＳ８７１）。この場合に、通信装置１０１の制御部は、割り当てられているＴＤＳのタイミングで通信装置１００に対するデータフレーム（ＮＡＣＫに相当）を送信させる。なお、ステップＳ８６１乃至Ｓ８６８、Ｓ８７０、Ｓ８７１は、請求の範囲に記載の制御手順の一例である。 Subsequently, the control unit of the communication apparatus 101 performs a transmission process of transmitting a data frame (corresponding to NACK) to the communication apparatus 100 (step S871). In this case, the control unit of the communication apparatus 101 transmits a data frame (corresponding to NACK) to the communication apparatus 100 at the assigned TDS timing. Note that steps S861 to S868, S870, and S871 are examples of the control procedure described in the claims.
　このように、通信装置１０１の制御部は、受信したデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信タイミングとなる送受信区間（Ｔｉｍｅ－ｓｅｇｍｅｎｔ）を特定することができる。 As described above, the control unit of the communication apparatus 101 can specify the transmission / reception section (Time-segment) that is the transmission / reception timing based on the sequence number stored in the header of the data frame of the received data.
　なお、上述した（Ｂ２）の動作を行う場合の例として、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを２ビットとし、１つのＴａｌｋｅｒと２つのＬｉｓｔｅｎｅｒとによりデータ通信を行う例を示した。ただし、Ｓｅｑｕｅｎｃｅ　ｎｕｍｂｅｒを３ビット以上とすることにより、１つのＴａｌｋｅｒと３以上のＬｉｓｔｅｎｅｒとによりデータ通信を行うことも可能である。 In addition, as an example in the case of performing the operation (B2) described above, an example is shown in which the sequence number is 2 bits and data communication is performed by one Talker and two Listeners. However, it is also possible to perform data communication between one Talker and three or more listeners by setting the Sequence number to 3 bits or more.
　このように、本技術の実施の形態によれば、１つのＴａｌｋｅｒと、複数のＬｉｓｔｅｎｅｒとの間で、それぞれ異なるデータを共通のスロットを使用して交換することができる。すなわち、２つの通信スロットを複数の通信装置で共有可能になり、それぞれ別々のスロットを使用したときよりも収容台数を増加させることができる。言い換えると、通信スロットを複数の通信装置間で時分割に使用することができ、通信装置の切り替えの手続きを要することなく１対Ｎの通信が可能になる。また、ＴａｌｋｅｒがＬｉｓｔｅｎｅｒを切り替えるためのＡｓｓｏｃｉａｔｉｏｎの手続きが不要になり、通信のパフォーマンスを向上させることができる。 As described above, according to the embodiment of the present technology, different data can be exchanged between a single Talker and a plurality of listeners using a common slot. That is, two communication slots can be shared by a plurality of communication devices, and the number of accommodated units can be increased as compared with the case where separate slots are used. In other words, the communication slot can be used in a time-sharing manner among a plurality of communication devices, and 1-to-N communication is possible without requiring a communication device switching procedure. In addition, an association procedure for the Talker to switch the listener becomes unnecessary, and the communication performance can be improved.
　また、本技術の実施の形態における通信装置１００乃至１０４は、各分野において使用される機器に適用することができる。例えば、人物が両耳にイヤフォンをしているときに、その人物が手に取る機器（例えば、スマートフォン、タブレット端末）に応じて、イヤフォンの入力先を変更する場合を想定する。この場合に、手に取った機器に応じて、迅速に精度よく、イヤフォンへの出力を行うことができる。 Moreover, the communication devices 100 to 104 according to the embodiments of the present technology can be applied to devices used in each field. For example, it is assumed that when a person wears earphones in both ears, the input destination of the earphone is changed according to a device (for example, a smartphone or a tablet terminal) that the person takes. In this case, the output to the earphone can be performed quickly and accurately according to the device picked up.
　また、例えば、人体に装着する医療機器、自動車に搭載される機器、駅の改札に設置される機器に適用することができる。自動車に搭載される機器は、例えば、人物が座った座席の位置を検出する機器、ハンドルを握った場合の人物の状態を検出する機器である。また、駅の改札に設置される機器は、例えば、人体が触れることにより何らかの認証を行う機器である。また、例えば、農業分野で使用される機器（例えば、牛管理システムの端末）に適用可能である。同様に、例えば、スポーツ分野や医療分野等で使用される各機器に適用可能である。 Also, for example, the present invention can be applied to medical devices that are worn on the human body, devices that are mounted on automobiles, and devices that are installed at ticket gates of stations. Devices mounted on automobiles are, for example, devices that detect the position of a seat on which a person is sitting, and devices that detect the state of a person when a handle is held. Moreover, the device installed in the ticket gate of the station is a device that performs some kind of authentication when touched by a human body, for example. Further, for example, the present invention can be applied to equipment used in the agricultural field (for example, a terminal of a cow management system). Similarly, for example, it can be applied to each device used in the sports field, the medical field, and the like.
　また、人体以外の他の体（例えば、牛、馬、犬、猫等の動物）に装着する機器についても適用することができる。また、複数の体（例えば、人体および牛の体）に装着されている機器についても適用することができる。この例を図１１に示す。 Also, it can be applied to a device to be attached to a body other than the human body (for example, animals such as cows, horses, dogs and cats). Moreover, it is applicable also to the apparatus with which the several body (for example, a human body and a cow's body) is mounted | worn. An example of this is shown in FIG.
　［複数の体に装着されている機器間の通信例］
　図１１は、本技術の実施の形態における通信装置５００、５１０、５２０、５３０間でデータのやりとりを行う場合の通信例を示す図である。 [Example of communication between devices attached to multiple bodies]
FIG. 11 is a diagram illustrating a communication example when data is exchanged between the communication devices 500, 510, 520, and 530 according to the embodiment of the present technology.
　図１１では、通信装置５００をＴａｌｋｅｒとし、通信装置５１０、５２０、５３０をＬｉｓｔｅｎｅｒとする場合の例を示す。また、通信装置５００は、通信装置１００に対応し、通信装置５１０、５２０、５３０は、通信装置１０１乃至１０４に対応するものとする。また、図１１では、通信装置５００を人物２０が所持し、通信装置５１０、５２０、５３０を牛に装着している場合の例を示す。 FIG. 11 shows an example in which the communication device 500 is a Talker and the communication devices 510, 520, and 530 are Listeners. The communication device 500 corresponds to the communication device 100, and the communication devices 510, 520, and 530 correspond to the communication devices 101 to 104. In addition, FIG. 11 shows an example in which the person 20 possesses the communication device 500 and the communication devices 510, 520, and 530 are attached to the cow.
　また、通信装置５００は、例えば、スマートフォン、タブレット端末等の情報処理装置である。また、通信装置５１０、５２０、５３０は、牛に関する各測定をするセンサである。このセンサは、例えば、ｐＨ（potential hydrogen、power of hydrogen）を測定することが可能なセンサ機器（ｐＨ測定器）（通信装置として牛の胃袋に取り付ける機器）とすることができる。また、例えば、牛の体温を測定することが可能なセンサ機器（牛温計）（通信装置として牛に取り付ける機器）とすることができる。 The communication device 500 is an information processing device such as a smartphone or a tablet terminal. Further, the communication devices 510, 520, and 530 are sensors that perform various measurements related to cows. This sensor can be, for example, a sensor device (pH meter) capable of measuring pH (potential hydrogen, power hydrogen of hydrogen) (device attached to a cow's stomach as a communication device). For example, it can be set as the sensor apparatus (cow thermometer) (apparatus attached to a cow as a communication apparatus) which can measure the body temperature of a cow.
　通信装置５１０、５２０、５３０は、各センサにより取得された各センサ情報（牛を識別するための識別情報を含む）を、体（人体および牛の体）を信号の伝送媒体とする通信を利用して通信装置５００に送信することができる。 The communication devices 510, 520, and 530 use communication using each sensor information (including identification information for identifying a cow) acquired by each sensor as a signal transmission medium of the body (human body and cow body). Then, it can be transmitted to the communication device 500.
　例えば、人物２０が左手に通信装置５００を保持し、右手を牛に当てると、上述した送受信タイミングに従って、通信装置５００と、通信装置５１０、５２０、５３０との間で、各センサ情報のやりとりを行うことができる。そして、通信装置５００の制御部（図１に示す制御部１４３に相当）は、受信した各センサ情報および牛を識別するための識別情報（例えば、名称）を表示部５０１に表示させることができる。このように、人物２０が右手を牛に当てると、左手に所持している通信装置５００の表示部５０１に、各センサ情報および牛の名称を表示させることができる。 For example, when the person 20 holds the communication device 500 in the left hand and puts the right hand on the cow, each sensor information is exchanged between the communication device 500 and the communication devices 510, 520, and 530 according to the transmission / reception timing described above. It can be carried out. And the control part (equivalent to the control part 143 shown in FIG. 1) of the communication apparatus 500 can display the identification information (for example, name) for identifying each received sensor information and a cow on the display part 501. . As described above, when the person 20 places the right hand on the cow, each sensor information and the name of the cow can be displayed on the display unit 501 of the communication device 500 possessed by the left hand.
　なお、図１１では、説明の容易のため、１頭の牛に３つの通信装置を取り付ける例を示すが、１頭の牛に２、または、４以上の通信装置を取り付ける場合についても同様に適用することができる。 Note that FIG. 11 shows an example in which three communication devices are attached to one cow for ease of explanation, but the same applies to the case where two or four or more communication devices are attached to one cow. can do.
　なお、上述の実施の形態は本技術を具現化するための一例を示したものであり、実施の形態における事項と、請求の範囲における発明特定事項とはそれぞれ対応関係を有する。同様に、請求の範囲における発明特定事項と、これと同一名称を付した本技術の実施の形態における事項とはそれぞれ対応関係を有する。ただし、本技術は実施の形態に限定されるものではなく、その要旨を逸脱しない範囲において実施の形態に種々の変形を施すことにより具現化することができる。 Note that the above-described embodiment is an example for embodying the present technology, and the matters in the embodiment and the invention-specific matters in the claims have a corresponding relationship. Similarly, the invention specific matter in the claims and the matter in the embodiment of the present technology having the same name as this have a corresponding relationship. However, the present technology is not limited to the embodiment, and can be embodied by making various modifications to the embodiment without departing from the gist thereof.
　また、上述の実施の形態において説明した処理手順は、これら一連の手順を有する方法として捉えてもよく、また、これら一連の手順をコンピュータに実行させるためのプログラム乃至そのプログラムを記憶する記録媒体として捉えてもよい。この記録媒体として、例えば、ＣＤ（Compact Disc）、ＭＤ（MiniDisc）、ＤＶＤ（Digital Versatile Disc）、メモリカード、ブルーレイディスク（Blu-ray（登録商標）Disc）等を用いることができる。 Further, the processing procedure described in the above embodiment may be regarded as a method having a series of these procedures, and a program for causing a computer to execute these series of procedures or a recording medium storing the program. You may catch it. As this recording medium, for example, a CD (Compact Disc), an MD (MiniDisc), a DVD (Digital Versatile Disc), a memory card, a Blu-ray disc (Blu-ray (registered trademark) Disc), or the like can be used.
　なお、本明細書に記載された効果はあくまで例示であって、限定されるものではなく、また、他の効果があってもよい。 It should be noted that the effects described in this specification are merely examples, and are not limited, and other effects may be obtained.
　なお、本技術は以下のような構成もとることができる。
（１）
　体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の通信装置に対するデータの送受信タイミングを切り替える制御を行う制御部を具備する通信装置。
（２）
　前記制御部は、複数の通信スロットにより構成される送受信区間において、前記データの送信に使用する第１通信スロットと、前記データの受信に使用する第２通信スロットとを割り当て、前記複数の通信装置のそれぞれを前記送受信区間単位で割り当てる前記（１）に記載の通信装置。
（３）
　前記制御部は、前記複数の通信装置を順番に前記送受信区間単位で割り当てる前記（２）に記載の通信装置。
（４）
　前記制御部は、前記送受信区間の数に基づいて、送受信の対象となる前記送受信区間に割り当てた通信装置を特定する前記（２）または（３）に記載の通信装置。
（５）
　前記制御部は、送信対象となるデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信の対象となる前記送受信区間に割り当てた通信装置を特定する前記（２）または（３）に記載の通信装置。
（６）
　前記制御部は、前記送受信タイミングを指定するための情報をＡｓｓｏｃｉａｔｉｏｎフレームに含めて前記複数の通信装置のそれぞれに送信することにより、前記送受信タイミングを前記複数の通信装置のそれぞれに通知する前記（１）から（５）のいずれかに記載の通信装置。
（７）
　前記通信は、ＥＣＭＡ－４０１仕様に準拠したデータ交換である前記（１）から（６）のいずれかに記載の通信装置。
（８）
　体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、前記他の通信装置との間でデータの送受信を行うよう制御する制御部を具備する通信装置。
（９）
　前記制御部は、複数の通信スロットにより構成される送受信区間において、前記データの受信に使用する第１通信スロットと、前記データの送信に使用する第２通信スロットとが割り当てられている場合に、前記通信装置に割り当てられた前記送受信区間における第１通信スロットを用いて前記データの受信を行い、当該送受信区間における第２通信スロットを用いて前記データの送信を行う前記（８）に記載の通信装置。
（１０）
　前記制御部は、前記送受信区間の数に基づいて、送受信タイミングとなる前記送受信区間を特定する前記（９）に記載の通信装置。
（１１）
　前記制御部は、受信したデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信タイミングとなる前記送受信区間を特定する前記（９）に記載の通信装置。
（１２）
　前記制御部は、Ａｓｓｏｃｉａｔｉｏｎフレームに含まれる前記送受信タイミングを指定するための情報に基づいて、前記他の通信装置から指定された送受信タイミングを取得する前記（８）から（１１）のいずれかに記載の通信装置。
（１３）
　体を信号の伝送媒体とする通信において、複数の受信機器に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の受信機器に対するデータの送受信タイミングを切り替える送信機器と、
　前記通信において、前記送信機器から指定された送受信タイミングに従って、前記送信機器との間でデータの送受信を行う複数の受信機器と
を具備する通信システム。
（１４）
　体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の通信装置に対するデータの送受信タイミングを切り替える制御手順を具備する通信方法。
（１５）
　体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、前記他の通信装置との間でデータの送受信を行う制御手順を具備する通信方法。
（１６）
　体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の通信装置に対するデータの送受信タイミングを切り替える制御手順をコンピュータに実行させるプログラム。
（１７）
　体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、前記他の通信装置との間でデータの送受信を行う制御手順をコンピュータに実行させるプログラム。 In addition, this technique can also take the following structures.
(1)
In communication using a body as a signal transmission medium, control is performed for specifying transmission / reception timings of data for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the specified transmission / reception timings. A communication device comprising a control unit for performing.
(2)
The control unit allocates a first communication slot used to transmit the data and a second communication slot used to receive the data in a transmission / reception section configured by a plurality of communication slots, and the plurality of communication devices The communication device according to (1), wherein each of the above is assigned in units of the transmission / reception sections.
(3)
The said control part is a communication apparatus as described in said (2) which allocates these communication apparatuses in order of the said transmission / reception area in order.
(4)
The said control part is a communication apparatus as described in said (2) or (3) which specifies the communication apparatus allocated to the said transmission / reception area used as the object of transmission / reception based on the number of the said transmission / reception areas.
(5)
In the above (2) or (3), the control unit identifies a communication device assigned to the transmission / reception section to be transmitted / received based on a sequence number stored in a header in a data frame of data to be transmitted. The communication device described.
(6)
The control unit notifies the transmission / reception timing to each of the plurality of communication devices by including information for designating the transmission / reception timing in an association frame and transmitting the information to each of the plurality of communication devices. ) To (5).
(7)
The communication apparatus according to any one of (1) to (6), wherein the communication is data exchange based on ECMA-401 specifications.
(8)
In communication using a body as a signal transmission medium, communication having a control unit that controls transmission / reception of data to / from another communication device in accordance with transmission / reception timing designated by another communication device serving as a communication partner apparatus.
(9)
In the transmission / reception section configured by a plurality of communication slots, the control unit is assigned with a first communication slot used for receiving the data and a second communication slot used for transmitting the data. The communication according to (8), wherein the data is received using a first communication slot in the transmission / reception section assigned to the communication device, and the data is transmitted using a second communication slot in the transmission / reception section. apparatus.
(10)
The said control part is a communication apparatus as described in said (9) which specifies the said transmission / reception area used as transmission / reception timing based on the number of the said transmission / reception areas.
(11)
The said control part is a communication apparatus as described in said (9) which specifies the said transmission / reception area used as transmission / reception timing based on the sequence number stored in the header in the data frame of the received data.
(12)
The said control part acquires the transmission / reception timing designated from the said other communication apparatus based on the information for designating the said transmission / reception timing contained in an Association frame, In any one of said (8) to (11) Communication equipment.
(13)
In communication using a body as a signal transmission medium, a transmission device that designates data transmission / reception timing for a plurality of reception devices, and switches data transmission / reception timing for the plurality of reception devices according to the designated transmission / reception timing;
In the communication, a communication system comprising a plurality of receiving devices that transmit / receive data to / from the transmitting device in accordance with transmission / reception timing designated by the transmitting device.
(14)
In communication using a body as a signal transmission medium, a control procedure for designating data transmission / reception timings for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings A communication method comprising:
(15)
In communication using a body as a signal transmission medium, a communication method comprising a control procedure for transmitting / receiving data to / from another communication device according to a transmission / reception timing designated by another communication device serving as a communication partner.
(16)
In communication using a body as a signal transmission medium, a control procedure for designating data transmission / reception timings for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings A program that causes a computer to execute.
(17)
In communication using a body as a signal transmission medium, a program for causing a computer to execute a control procedure for transmitting / receiving data to / from another communication device in accordance with a transmission / reception timing designated by another communication device serving as a communication partner.
　１００～１０４、５００、５１０、５２０、５３０　通信装置
　１１０　電極
　１２０　送信部
　１３０　受信部
　１４０　処理部
　１４１　情報提供部
　１４２　情報取得部
　１４３　制御部
　１５０　記憶部
　５０１　表示部 100 to 104, 500, 510, 520, 530 Communication device 110 Electrode 120 Transmission unit 130 Reception unit 140 Processing unit 141 Information providing unit 142 Information acquisition unit 143 Control unit 150 Storage unit 501 Display unit

Claims (17)

  1. 　体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の通信装置に対するデータの送受信タイミングを切り替える制御を行う制御部を具備する通信装置。 In communication using a body as a signal transmission medium, control is performed for specifying transmission / reception timings of data for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the specified transmission / reception timings. A communication device comprising a control unit for performing.
  2. 　前記制御部は、複数の通信スロットにより構成される送受信区間において、前記データの送信に使用する第１通信スロットと、前記データの受信に使用する第２通信スロットとを割り当て、前記複数の通信装置のそれぞれを前記送受信区間単位で割り当てる請求項１記載の通信装置。 The control unit allocates a first communication slot used to transmit the data and a second communication slot used to receive the data in a transmission / reception section configured by a plurality of communication slots, and the plurality of communication devices The communication apparatus according to claim 1, wherein each of the above is assigned in units of said transmission / reception sections.
  3. 　前記制御部は、前記複数の通信装置を順番に前記送受信区間単位で割り当てる請求項２記載の通信装置。 The communication device according to claim 2, wherein the control unit assigns the plurality of communication devices in units of the transmission / reception sections in order.
  4. 　前記制御部は、前記送受信区間の数に基づいて、送受信の対象となる前記送受信区間に割り当てた通信装置を特定する請求項２記載の通信装置。 The communication device according to claim 2, wherein the control unit specifies a communication device assigned to the transmission / reception section to be transmitted / received based on the number of the transmission / reception sections.
  5. 　前記制御部は、送信対象となるデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信の対象となる前記送受信区間に割り当てた通信装置を特定する請求項２記載の通信装置。 The communication device according to claim 2, wherein the control unit specifies a communication device assigned to the transmission / reception section to be transmitted / received based on a sequence number stored in a header of a data frame of data to be transmitted.
  6. 　前記制御部は、前記送受信タイミングを指定するための情報をＡｓｓｏｃｉａｔｉｏｎフレームに含めて前記複数の通信装置のそれぞれに送信することにより、前記送受信タイミングを前記複数の通信装置のそれぞれに通知する請求項１記載の通信装置。 The control unit notifies the transmission / reception timing to each of the plurality of communication devices by including information for designating the transmission / reception timing in an association frame and transmitting the information to each of the plurality of communication devices. The communication device described.
  7. 　前記通信は、ＥＣＭＡ－４０１仕様に準拠したデータ交換である請求項１記載の通信装置。 The communication apparatus according to claim 1, wherein the communication is data exchange conforming to ECMA-401 specifications.
  8. 　体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、前記他の通信装置との間でデータの送受信を行うよう制御する制御部を具備する通信装置。 In communication using a body as a signal transmission medium, communication having a control unit that controls transmission / reception of data to / from another communication device in accordance with transmission / reception timing designated by another communication device serving as a communication partner apparatus.
  9. 　前記制御部は、複数の通信スロットにより構成される送受信区間において、前記データの受信に使用する第１通信スロットと、前記データの送信に使用する第２通信スロットとが割り当てられている場合に、前記通信装置に割り当てられた前記送受信区間における第１通信スロットを用いて前記データの受信を行い、当該送受信区間における第２通信スロットを用いて前記データの送信を行う請求項８記載の通信装置。 In the transmission / reception section configured by a plurality of communication slots, the control unit is assigned with a first communication slot used for receiving the data and a second communication slot used for transmitting the data. The communication apparatus according to claim 8, wherein the data is received using a first communication slot in the transmission / reception section assigned to the communication apparatus, and the data is transmitted using a second communication slot in the transmission / reception section.
  10. 　前記制御部は、前記送受信区間の数に基づいて、送受信タイミングとなる前記送受信区間を特定する請求項９記載の通信装置。 The communication device according to claim 9, wherein the control unit specifies the transmission / reception section serving as a transmission / reception timing based on the number of the transmission / reception sections.
  11. 　前記制御部は、受信したデータのデータフレームにおけるヘッダに格納されるシーケンス番号に基づいて、送受信タイミングとなる前記送受信区間を特定する請求項９記載の通信装置。 The communication device according to claim 9, wherein the control unit specifies the transmission / reception section serving as a transmission / reception timing based on a sequence number stored in a header of a data frame of received data.
  12. 　前記制御部は、Ａｓｓｏｃｉａｔｉｏｎフレームに含まれる前記送受信タイミングを指定するための情報に基づいて、前記他の通信装置から指定された送受信タイミングを取得する請求項８記載の通信装置。 The communication device according to claim 8, wherein the control unit acquires the transmission / reception timing designated from the other communication device based on information for designating the transmission / reception timing included in the Association frame.
  13. 　体を信号の伝送媒体とする通信において、複数の受信機器に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の受信機器に対するデータの送受信タイミングを切り替える送信機器と、
    　前記通信において、前記送信機器から指定された送受信タイミングに従って、前記送信機器との間でデータの送受信を行う複数の受信機器と
    を具備する通信システム。     In communication using a body as a signal transmission medium, a transmission device that designates data transmission / reception timing for a plurality of reception devices, and switches data transmission / reception timing for the plurality of reception devices according to the designated transmission / reception timing;
    In the communication, a communication system comprising a plurality of receiving devices that transmit / receive data to / from the transmitting device in accordance with transmission / reception timing designated by the transmitting device.
  14. 　体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の通信装置に対するデータの送受信タイミングを切り替える制御手順を具備する通信方法。 In communication using a body as a signal transmission medium, a control procedure for designating data transmission / reception timings for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings A communication method comprising:
  15. 　体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、前記他の通信装置との間でデータの送受信を行う制御手順を具備する通信方法。 In communication using a body as a signal transmission medium, a communication method comprising a control procedure for transmitting / receiving data to / from another communication device according to a transmission / reception timing designated by another communication device serving as a communication partner.
  16. 　体を信号の伝送媒体とする通信において、通信相手となる複数の通信装置に対するデータの送受信タイミングを指定し、当該指定された送受信タイミングに従って、前記複数の通信装置に対するデータの送受信タイミングを切り替える制御手順をコンピュータに実行させるプログラム。 In communication using a body as a signal transmission medium, a control procedure for designating data transmission / reception timings for a plurality of communication devices as communication partners and switching data transmission / reception timings for the plurality of communication devices according to the designated transmission / reception timings A program that causes a computer to execute.
  17. 　体を信号の伝送媒体とする通信において、通信相手となる他の通信装置から指定された送受信タイミングに従って、前記他の通信装置との間でデータの送受信を行う制御手順をコンピュータに実行させるプログラム。 In communication using a body as a signal transmission medium, a program for causing a computer to execute a control procedure for transmitting / receiving data to / from another communication device in accordance with a transmission / reception timing designated by another communication device serving as a communication partner.
PCT/JP2016/063141 2015-05-21 2016-04-27 Communication device, communication system, communication method and program WO2016185886A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1079970A (en) * 1996-09-02 1998-03-24 Nippon Telegr & Teleph Corp <Ntt> Radio packet channel allocating method
JP2003009220A (en) * 2001-06-26 2003-01-10 Kyocera Corp Radio communication system and radio communication terminal
JP2009540727A (en) * 2006-06-16 2009-11-19 韓國電子通信研究院 Communication apparatus and method via human body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1079970A (en) * 1996-09-02 1998-03-24 Nippon Telegr & Teleph Corp <Ntt> Radio packet channel allocating method
JP2003009220A (en) * 2001-06-26 2003-01-10 Kyocera Corp Radio communication system and radio communication terminal
JP2009540727A (en) * 2006-06-16 2009-11-19 韓國電子通信研究院 Communication apparatus and method via human body

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