WO2016189933A1 - Dispositif de communication, et procédé de communication - Google Patents

Dispositif de communication, et procédé de communication Download PDF

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Publication number
WO2016189933A1
WO2016189933A1 PCT/JP2016/058193 JP2016058193W WO2016189933A1 WO 2016189933 A1 WO2016189933 A1 WO 2016189933A1 JP 2016058193 W JP2016058193 W JP 2016058193W WO 2016189933 A1 WO2016189933 A1 WO 2016189933A1
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WO
WIPO (PCT)
Prior art keywords
communication
notification
sleep
wireless lan
standard
Prior art date
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PCT/JP2016/058193
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English (en)
Japanese (ja)
Inventor
菅谷　茂
Original Assignee
ソニー株式会社
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Publication date
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Priority to DE112016002363.4T priority Critical patent/DE112016002363T5/de
Publication of WO2016189933A1 publication Critical patent/WO2016189933A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to a communication device and a communication method.
  • Patent Document 1 a first proximity wireless communication unit, a second proximity wireless communication unit having a communication rate higher than that of the first proximity wireless communication unit, and a communication distance equal to or greater than that of the first proximity wireless communication unit, And a communication device that activates the second proximity wireless communication unit when the first proximity wireless communication unit can communicate is disclosed.
  • wireless LAN Local Area Network
  • Wi-Fi registered trademark
  • Bluetooth registered trademark
  • NFC Near Field Communication
  • the present disclosure proposes a new and improved communication device and communication method capable of reducing the communication overhead while suppressing power consumption in the wireless LAN standard communication operation.
  • a first communication unit that performs a communication operation of a wireless LAN (Local Area Network) standard that starts communication by performing connection processing, and a second communication standard that is different from the communication operation of the wireless LAN standard
  • a second communication unit that performs the communication operation of the first communication unit, and the second communication unit performs a communication operation of the second communication standard based on a request for the communication operation by the first communication unit.
  • a communication device is provided.
  • the first communication unit performs a communication operation of a wireless LAN (Local Area Network) standard that starts communication by performing connection processing
  • the second communication unit performs the wireless communication.
  • a communication method is provided.
  • a communication device and a communication method capable of reducing communication overhead while suppressing power consumption in wireless LAN standard communication operations.
  • the above effects are not necessarily limited, and any of the effects shown in the present specification, or other effects that can be grasped from the present specification, together with or in place of the above effects. May be played.
  • FIG. 3 is a block diagram illustrating an example of a schematic functional configuration of a communication device according to a first embodiment of the present disclosure.
  • FIG. It is a figure which shows the structural example of the sleep request notification communicated in the communication apparatus which concerns on the embodiment. It is a figure which shows the structural example of the dormancy notification communicated in the communication apparatus which concerns on the embodiment. It is a figure for demonstrating operation
  • FIG. 4 is a flowchart conceptually showing a return process from a sleep state and a re-transition process to a sleep state based on a request for activation of a communication apparatus according to the embodiment. It is a figure which shows the structural example of the sleep notification communicated in the communication apparatus which concerns on 2nd Embodiment of this indication. It is a figure which shows the structural example of the proxy connection notification communicated in the communication apparatus which concerns on the embodiment. It is a sequence diagram which shows notionally the transfer process to the sleep state of the communication apparatus which concerns on the embodiment. It is a sequence diagram which shows notionally the return process from the sleep state of the communication apparatus which concerns on the same embodiment, and the re-transfer process to a sleep state.
  • FIG. 4 is a flowchart conceptually showing a transition process to a sleep state based on a sleep request of the communication apparatus according to the embodiment.
  • 5 is a flowchart conceptually showing a return process from a spontaneous sleep state and a re-migration process to a sleep state of the communication apparatus according to the embodiment.
  • 4 is a flowchart conceptually showing a return process from a sleep state and a re-transition process to a sleep state based on a request for activation of a communication apparatus according to the embodiment.
  • FIG. 3 is an explanatory diagram illustrating a hardware configuration of a communication device according to an embodiment of the present disclosure.
  • a plurality of constituent elements having substantially the same functional configuration may be distinguished by adding different numbers after the same reference numerals.
  • a plurality of configurations having substantially the same function are distinguished as necessary, such as the communication device 100A and the communication device 100B.
  • the same reference numerals are given.
  • the communication device 100A and the communication device 100B they are simply referred to as the communication device 100.
  • FIG. 1 is a diagram for describing an overview of a communication device according to an embodiment of the present disclosure.
  • the communication device 100 has two types of short-range wireless communication functions such as a first communication function and a second communication function. For this reason, the communication apparatus 100 can perform communication suitable for the situation by switching between two types of communication functions.
  • a plurality of communication devices 100 are connected to each other for communication.
  • Communication device 100A is connected to communication devices 100B and 100C
  • communication device 100B is connected to communication devices 100A, 100C, and 100D.
  • Communication device 100C is connected to communication devices 100A, 100B, and 100D
  • communication device 100D is connected to communication devices 100B and 100C.
  • the communication device 100B or 100C may operate as an AP (Access Point), and the other communication device 100 may operate as an STA (Station).
  • a conventional communication apparatus may have a carrier sense function in order to avoid collision of signals in communication.
  • a conventional communication apparatus that performs a wireless LAN standard communication operation conforming to the IEEE 802.11-2012 standard uses CSMA / CA (Carrier Sense Multiple Access / Collision Avoidance) protocol to wait for reception of a frame, A frame transmitted from another communication device is detected.
  • CSMA / CA Carrier Sense Multiple Access / Collision Avoidance
  • the communication device that changes the state of its own device to a state where communication is possible in a short time while sleeping itself. For example, before starting the wireless LAN standard communication operation, the communication parameter of the wireless LAN standard communication that is to be exchanged after the start is set in advance using communication of another communication standard different from the wireless LAN standard communication. There is a communication device to exchange.
  • connection processing and authentication processing are performed when a new communication connection is made. Therefore, when the wireless LAN standard communication operation is sleeping, every time the wireless LAN standard communication operation is activated.
  • Authentication processing for communication connection is performed. For example, an association process and an authentication process are generally performed each time a communication apparatus operating as an STA newly establishes a communication connection with an AP in a wireless LAN.
  • a first proximity wireless communication unit a second proximity wireless communication unit having a higher communication rate in the physical layer than the first proximity wireless communication unit, and a communication distance equal to or greater than that of the first proximity wireless communication unit
  • a communication device that activates the second proximity wireless communication unit when the first proximity wireless communication unit can communicate.
  • connection processing is performed every time the second proximity wireless communication unit is activated.
  • a communication device that performs connection processing and authentication processing in a standby state that is transitioned from a sleep state, and performs communication in an active state that is transitioned from the standby state.
  • the communication device transitions its own state to the sleep state.
  • connection processing and authentication processing are performed when the state of the own device is changed to the standby state.
  • the connection process and the authentication process are performed each time the wireless LAN standard communication operation is activated. For this reason, every time the wireless LAN standard communication operation is activated, a communication overhead from the activation to data transmission occurs.
  • a communication device that performs a communication operation of a wireless LAN standard that starts communication by performing connection processing and performs a communication operation of a second communication standard different from the communication operation of the wireless LAN standard
  • a communication apparatus that performs a communication operation of the second communication standard based on a request for a communication operation using LAN standard communication is proposed.
  • the communication device 100A and the communication device 100B after the end of the communication operation using the wireless LAN standard communication, sleep the wireless LAN standard communication operation and activate the second communication standard, for example, the BT standard communication operation. . Then, if a request for data transmission by wireless LAN standard communication occurs while the communication operation of the wireless LAN standard is sleeping, the communication device 100A sends the request to the communication device 100B, which is a communication partner, using BT standard communication. Notice. Receiving the notification, the communication device 100B activates the wireless LAN standard communication operation. Thereafter, the communication device 100A transmits data to the communication device 100B using communication according to the wireless LAN standard.
  • the communication device 100 has a function of performing communication of a wireless LAN standard that starts a communication operation by performing a connection process, and a communication operation of a second communication standard different from the communication operation of the wireless LAN standard.
  • the communication operation of the second communication standard is performed based on the request for the communication operation using the wireless LAN standard communication. For this reason, the request for the communication operation of the wireless LAN standard is notified to the communication partner by the communication of the second communication standard, so that the connection by the communication operation of the wireless LAN standard is maintained without using the communication of the wireless LAN standard.
  • connection processing or the like is not performed each time a request for a wireless LAN standard communication operation is generated, and it is possible to reduce communication overhead while suppressing power consumption in the wireless LAN standard communication operation. The details will be described below.
  • FIG. 2 is a block diagram illustrating an example of a schematic functional configuration of the communication device 100-1 according to the first embodiment of the present disclosure.
  • the communication device 100-1 includes a data processing unit 110, a control unit 120, a first communication unit 130, and a second communication unit 140, as shown in FIG.
  • the data processing unit 110 includes an interface unit 111, a transmission buffer 112, a transmission frame construction unit 113, a reception frame analysis unit 114, and a reception buffer 115.
  • the interface unit 111 is an interface connected to a functional configuration other than the functional configuration described above in the communication device 100-1. Specifically, the interface unit 111 exchanges control information such as data or authentication information with the other functional configuration.
  • the transmission buffer 112 stores data to be transmitted. Specifically, the transmission buffer 112 stores data obtained by the interface unit 111.
  • the transmission frame construction unit 113 generates a frame to be transmitted. Specifically, the transmission frame construction unit 113 generates a frame based on data stored in the transmission buffer 112 or control information such as a management frame or a control PDU set by the control unit 120.
  • the received frame analysis unit 114 analyzes the received frame. Specifically, the received frame analysis unit 114 determines the destination of the frame received by the first communication unit 130 and acquires data or control information included in the frame.
  • the reception buffer 115 stores received data. Specifically, the reception buffer 115 stores data acquired by the reception frame analysis unit 114.
  • control unit 120 includes a communication control unit 121 and an operation management unit 122.
  • the communication control unit 121 controls wireless LAN standard communication by the first communication unit 130. Specifically, the communication control unit 121 controls connection of wireless LAN standard communication. For example, when a connection request for a new wireless LAN standard is generated, the communication control unit 121 causes the data processing unit 110 to generate a frame related to a connection process or an authentication process such as an association process or an authentication process.
  • the communication control unit 121 controls the frame generation of the transmission frame construction unit 113 based on the data storage state in the transmission buffer 112 or the frame analysis result by the reception frame analysis unit 114. For example, when data is stored in the transmission buffer 112, the communication control unit 121 instructs the transmission frame construction unit 113 to generate a data frame in which the data is stored. When the reception frame analysis unit 114 detects reception of a data frame, the communication control unit 121 instructs the transmission frame construction unit 113 to generate an ACK (Acknowledgement) frame that is a response to the data frame.
  • ACK Acknowledgement
  • the operation management unit 122 manages the operations of the first communication unit 130 and the second communication unit 140. Specifically, the operation management unit 122 controls transmission / reception processing of the first communication unit 130 and the second communication unit 140.
  • the operation management unit 122 is a proxy for communication (hereinafter also referred to as proxy connection) for maintaining the sleep connection of the first communication unit 130 and the communication connection of the first communication unit 130 by the second communication unit 140 as described later. ) To control.
  • the first communication unit 130 includes a transmission processing unit 131, a reception processing unit 132, and an antenna control unit 133.
  • the transmission processing unit 131 performs frame transmission processing. Specifically, the transmission processing unit 131 generates a signal to be transmitted based on the frame provided from the transmission frame construction unit 113. The transmission processing unit 131 is controlled to start and stop by the operation management unit 122 as described later.
  • the reception processing unit 132 performs frame reception processing. Specifically, the reception processing unit 132 performs frame restoration based on a signal provided from the antenna control unit 133. The reception processing unit 132 is controlled to start and stop by the operation management unit 122 as described later.
  • the antenna control unit 133 transmits and receives signals via at least one antenna. Specifically, the antenna control unit 133 transmits a signal generated by the transmission processing unit 131 through the antenna, and provides the reception processing unit 132 with a signal received through the antenna.
  • the antenna control unit 133 may perform control related to space division multiplexing. In addition, the antenna control unit 133 may be controlled to start and stop by the operation management unit 122.
  • the second communication unit 140 includes a transmission processing unit 141, a reception processing unit 142, and an antenna control unit 143.
  • the transmission processing unit 141 performs signal transmission processing. Specifically, the transmission processing unit 141 generates a signal transmitted by the antenna control unit 143 based on an instruction from the operation management unit 122. The transmission processing unit 141 may generate a signal based on at least one PDU (Protocol Data Unit) generated based on an instruction from the operation management unit 122.
  • PDU Protocol Data Unit
  • the reception processing unit 142 performs signal reception processing. Specifically, the reception processing unit 142 performs information restoration based on a signal provided from the antenna control unit 143. The reception processing unit 142 may restore the PDU based on the signal provided from the antenna control unit 143.
  • the antenna control unit 143 transmits and receives signals via at least one antenna. Specifically, the antenna control unit 143 transmits a signal generated by the transmission processing unit 141 via the antenna, and provides the reception processing unit 142 with a signal received via the antenna.
  • the antenna control unit 143 may perform control related to space division multiplexing.
  • the communication device 100-1 that requests sleep or activation of the wireless LAN standard communication operation is referred to as a communication device 100-1 # 1
  • the communication device 100-1 that receives the sleep or activation request is referred to as a communication device. This is called 100-1 # 2.
  • the communication device 100-1 performs a plurality of types of communication. Specifically, the first communication unit 130 performs a wireless LAN standard communication operation that starts a communication operation by performing a connection process, and the second communication unit 140 performs wireless LAN standard communication of the first communication unit 130. A communication operation of a second communication standard different from the operation is performed. More specifically, the communication of the second communication standard is a communication that consumes less power than the communication of the wireless LAN standard. Further, the communication signal method of the second communication standard may be communication that is less likely to be disconnected than the communication signal method of the wireless LAN standard.
  • the first communication unit 130 performs a communication operation based on a wireless LAN standard as defined in IEEE 802.11, and the second communication unit 140 is a BT or BLE (Bluetooth) as defined in IEEE 802.15. Communication operation conforming to standards such as Low Energy).
  • a wireless LAN standard as defined in IEEE 802.11
  • the second communication unit 140 is a BT or BLE (Bluetooth) as defined in IEEE 802.15. Communication operation conforming to standards such as Low Energy).
  • the communication device 100-1 performs sleep control of the communication operation of the wireless LAN standard.
  • a case where the communication operation of the wireless LAN standard goes to sleep will be described first.
  • the communication device 100-1 determines whether the first communication unit 130 can sleep. Specifically, communication device 100-1 # 1 determines whether sleep of first communication unit 130 is possible based on the sleep condition. For example, the control unit 120 determines that the first communication unit 130 can sleep when no data transmission request has been generated over a predetermined period and the second communication unit 140 is available.
  • the communication device 100-1 # 2 determines whether the first communication unit 130 can sleep. For example, when the sleep request notification is received by the first communication unit 130, the control unit 120 determines whether the first communication unit 130 can sleep.
  • the communication device 100-1 performs the communication operation of the second communication standard when the communication operation of the wireless LAN standard is stopped. Specifically, when it is determined that the first communication unit 130 can sleep, the communication device 100-1 performs the communication operation of the second communication standard and causes the first communication unit 130 to sleep. For example, when it is determined that the first communication unit 130 can sleep, the control unit 120 of the communication device 100-1 # 1 issues a stop request notification (hereinafter referred to as a request for stopping the wireless LAN standard communication operation). The data processing unit 110 is instructed to generate a sleep request notification, and the second communication unit 140 is instructed to start proxy connection.
  • a stop request notification hereinafter referred to as a request for stopping the wireless LAN standard communication operation.
  • the generated sleep request notification is transmitted by the first communication unit 130, and a stop notification (hereinafter also referred to as a sleep notification) that is a response to the response to the sleep request notification is awaited by the second communication unit 140.
  • a stop notification hereinafter also referred to as a sleep notification
  • the control unit 120 shifts the first communication unit 130 to the sleep state.
  • the control unit 120 of the communication device 100-1 # 2 instructs the second communication unit 140 to start proxy connection and transmit a sleep notification. Then, the first communication unit 130 is put to sleep.
  • the sleep notification also serves as a reception confirmation notification for the sleep request notification.
  • FIG. 3 is a diagram illustrating a configuration example of a sleep request notification communicated in the communication device 100-1 according to the present embodiment.
  • the sleep request notification may be a kind of information element of the management frame.
  • the sleep request notification includes fields such as MAC (Media Access Control) Header, Information Element, and FCS (Frame Check Sequence) as shown in FIG.
  • Information Element includes fields such as Element ID (Identifier), Length, and Sleep Mode Request Parameter.
  • the Sleep Mode Request Parameter includes fields such as Identifier, Target Address, Request Duration, Request Interval, and Reserved. For example, Address information of the communication device 100-1 that is the destination of the sleep request notification is stored in Target Address. Further, as a sleep parameter, information indicating a requested sleep period is stored in Request Duration, and information indicating a time interval of connection confirmation in a requested sleep period is stored in Request Interval.
  • FIG. 4 is a diagram illustrating a configuration example of a sleep notification communicated in the communication device 100-1 according to the present embodiment.
  • Dormant notification can be a type of control PDU.
  • the sleep notification includes fields such as Header, Opcode, and Control Data as shown in FIG.
  • the header includes fields such as LLID (Logical Link ID), NESN (Next Expected Sequence Number), SN (Sequence Number), MD (More Data), RFU (Reserved for Future Use), Length, and RFU.
  • Opcode stores information indicating Dose.
  • Control Data includes fields such as Target Address, Sleep Duration, Dose interval, and RFU.
  • Target Address stores the address information of the communication device 100-1 that is the destination of the sleep notification.
  • sleep parameters information indicating a sleep period is stored in Sleep Duration, and information indicating a time interval of connection confirmation in the sleep period is stored in Dose Interval.
  • the communication device 100-1 performs sleep control of the first communication unit 130 based on information related to sleep control (hereinafter also referred to as sleep parameters) obtained by the sleep request notification and the sleep notification exchange.
  • sleep parameters information related to sleep control
  • the control unit 120 of the communication device 100-1 # 1 instructs the data processing unit 110 to generate a sleep request notification including the sleep parameter requested by the own device, and the sleep request notification including the sleep parameter is received. Sent. Then, the control unit 120 controls sleep of the first communication unit 130, that is, the wireless LAN standard communication operation, based on the sleep parameter included in the sleep notification as a response to the sleep request notification.
  • the control unit 120 of the communication device 100-1 # 2 is specified based on the sleep parameter included in the sleep request notification and the sleep parameter that can be handled by the own device. Instructs the data processor 110 to generate a sleep notification including a sleep parameter. Then, a sleep notification including the specified sleep parameter is transmitted.
  • the control unit 120 adopts the requested sleep parameter when the requested sleep parameter can be handled by the own device, and can respond by the own device when the requested sleep parameter is not available by the own device. Adopting various dormant parameters.
  • control unit 120 controls whether or not the first communication unit 130 is sleeping by performing power feeding control.
  • control unit 120 may control the presence / absence of sleep by hardware or software processing other than power supply control.
  • the communication device 100-1 basically does not perform a wireless LAN standard communication operation in the sleep state. However, as an exception, the communication device 100-1 intermittently performs a communication operation for confirming the continuation of the communication connection in the wireless LAN standard even while the communication operation of the wireless LAN standard is in a sleep state.
  • the first communication unit 130 performs a communication operation for confirming the connection of the wireless LAN standard communication at a predetermined time interval during the suspension period of the wireless LAN standard communication operation. Furthermore, with reference to FIG. 5, the operation of the communication device 100-1 during the sleep of the first communication unit 130 will be described in detail.
  • FIG. 5 is a diagram for explaining the operation during the sleep of the wireless LAN standard communication operation of the communication device 100-1 according to the present embodiment.
  • the first communication unit 130 shifts to a sleep state when a sleep request is generated. For example, when there is no data transmission after the connection process and the authentication process of the first communication unit 130, the control unit 120 determines that the first communication unit 130 can sleep, and the first communication unit 130 as illustrated in FIG. 130 is shifted to the sleep state. Instead, the control unit 120 instructs the second communication unit 140 to start proxy connection, and the second communication unit 140 that has received the instruction starts proxy connection as illustrated in FIG. 5.
  • the first communication unit 130 performs connection confirmation at a time interval specified by the sleep parameter during the sleep period.
  • the control unit 120 activates the first communication unit 130 at a time interval indicated by information stored in the Dose Interval among the sleep parameters, and confirms connection of wireless LAN standard communication.
  • the first communication unit 130 performs the operation.
  • the intermittent connection confirmation is performed until the period indicated by the information stored in Sleep Duration of the sleep time, that is, the sleep parameter.
  • the time interval for connection confirmation may be a time interval longer than the interval of DTIM (Delivery Traffic Indication Map).
  • the first communication unit 130 disconnects the wireless LAN standard communication connection when it is determined by the connection confirmation that it is difficult to continue the wireless LAN standard communication connection. For example, when the communication partner moves out of the communication range of the wireless LAN standard communication while the first communication unit 130 is sleeping, the first communication unit 130 disconnects the wireless LAN standard communication with the communication partner.
  • the communication device 100-1 activates a wireless LAN standard communication operation when a request for a communication operation using the wireless LAN standard communication occurs while the wireless LAN standard communication operation is sleeping.
  • the communication device 100-1 # 1 performs the communication operation of the second communication standard based on the generation of the request for the communication operation by the communication of the wireless LAN standard during the sleep of the communication operation of the wireless LAN standard. Then, the first communication unit 130 is activated. More specifically, when a data transmission request using wireless LAN standard communication is generated, the control unit 120 transmits a start request notification for notifying a start request for a wireless LAN standard communication operation to the second communication unit. 140 is instructed and the first communication unit 130 is activated. For example, when the control unit 120 detects that a data transmission request to the communication partner has occurred, the control unit 120 instructs the second communication unit 140 to transmit a startup request notification.
  • FIG. 6 is a diagram illustrating a configuration example of the activation request notification communicated in the communication device 100-1 according to the present embodiment.
  • the activation request notification can be a kind of control PDU.
  • the activation request notification includes fields such as Header, Opcode, and Control Data, as shown in FIG.
  • Opcode stores information indicating Dose.
  • Control Data includes fields such as Target Address, Buffered Data Length, Control Parameter, and RFU.
  • Address information of the communication device 100-1 that is the destination of the activation request notification is stored in Target Address.
  • Buffered Data Length stores information indicating the data length of data stored in the transmission buffer 112
  • Control Parameter stores information used for access control for wireless LAN standard communication.
  • the communication device 100-1 # 2 activates the first communication unit 130 and notifies the communication partner that the first communication unit 130 has been activated.
  • the control unit 120 activates the first communication unit 130, that is, the wireless LAN standard communication operation, and a response to the activation request notification.
  • the processing related to the communication of the start completion notification for notifying the start completion of the communication operation of the wireless LAN standard is performed.
  • the control unit 120 causes the data processing unit 110 to generate a startup completion notification after starting the first communication unit 130 upon receipt of the startup request notification. Then, the generated start completion notification is transmitted by the first communication unit 130.
  • FIG. 7 is a diagram illustrating a configuration example of a start completion notification communicated in the communication device 100-1 according to the present embodiment.
  • the activation completion notification can be a kind of information element of the management frame.
  • the activation completion notification includes fields such as MAC Header, Information Element, and FCS, as shown in FIG.
  • Information Element includes fields such as Element ID, Length, and Wakeup Grant Parameter.
  • Wakeup Grant Parameter includes fields such as Identifier, Target Address, Data Duration, MCS (Modulation and Coding Scheme) Parameter, and Reserved. For example, Address information of the communication device 100-1 that is the destination of the start completion notification is stored in Target Address. Further, as communication parameters, information indicating a data transmission period is stored in Data Duration, and information indicating a modulation scheme and a coding rate used for data transmission is stored in MCS Parameter. In addition to the MCS parameter, the Wakeup Grant Parameter may store information such as a frequency range that can be used for carrier aggregation or MIMO (Multi-Input Multi-Output) channel information.
  • MCS Modulation and Coding Scheme
  • the communication device 100-1 # 1 notifies the communication partner of information related to the transmitted data using the activation request notification.
  • the control unit 120 causes the second communication unit 140 to transmit an activation request notification including information related to data to be transmitted by wireless LAN standard communication (hereinafter also referred to as data information).
  • the communication device 100-1 # 2 notifies the communication partner of information (hereinafter, also referred to as a communication parameter) related to control of communication according to the wireless LAN standard using the activation completion notification.
  • the control unit 120 causes the data processing unit 110 to generate a startup completion notification including wireless LAN standard communication parameters. Then, the generated start completion notification is transmitted by the first communication unit 130.
  • the communication device 100-1 # 1 starts the data transmission process when the activation completion notification is received.
  • the control unit 120 causes the data processing unit 110 to generate a data frame as a frame for a data transmission request. Then, the first communication unit 130 transmits the generated data frame.
  • the communication device 100-1 # 1 controls data transmission based on the communication parameter included in the activation completion notification. Specifically, the control unit 120 causes the first communication unit 130 to perform data transmission with the data transmission period, modulation scheme, and coding rate included in the communication parameters.
  • the communication device 100-1 After completing the data transmission, the communication device 100-1 again makes the wireless LAN standard communication operation sleep.
  • the communication device 100-1 # 2 first determines whether or not the first communication unit 130 can sleep when data transmission by the first communication unit 130 is completed. For example, when the data frame for the data transmission request is successfully received by the first communication unit 130, the control unit 120 may receive the first sleep condition such that the second communication unit 140 can be used. It is determined that the communication unit 130 can sleep.
  • the communication device 100-1 # 2 performs the reception confirmation notification about the frame for the data transmission request and the suspension of the wireless LAN standard communication operation.
  • a re-stop notification for notification (hereinafter also referred to as a second sleep notification) is transmitted to the second communication unit 140 and the first communication unit 130 is put to sleep.
  • the control unit 120 causes the data processing unit 110 to generate a reception confirmation / sleep notification that serves as both a reception confirmation notification and a second sleep notification, and the second communication unit 140 transmits the generated reception confirmation / sleep notification. To do. Then, the control unit 120 causes the first communication unit 130 to sleep.
  • FIG. 8 is a diagram showing a configuration example of a reception confirmation / sleep notification communicated in the communication apparatus 100-1 according to the present embodiment.
  • the reception confirmation / sleep notification may be a kind of control PDU.
  • the reception confirmation / sleep notification includes fields such as Header, Opcode, and Control Data, as shown in FIG.
  • Opcode information indicating ACK Dose is stored.
  • Control Data includes fields such as Target Address, Sleep Duration, Dose Interval, Sequence No., and RFU.
  • Address information of the communication device 100-1 that is the destination of the reception confirmation / sleep notification is stored in Target Address.
  • information indicating a sleep period is stored in Sleep Duration
  • information indicating a time interval of connection confirmation in the sleep period is stored in Dose Interval.
  • the Sequence No. stores information indicating the sequence number of the received data.
  • the communication device 100-1 # 2 notifies the communication partner of a reception confirmation notification.
  • the control unit 120 causes the data processing unit 110 to generate a reception confirmation notification, and the first communication unit 130 transmits the generated reception confirmation notification.
  • the control unit 120 may cause the second communication unit 140 to transmit a reception confirmation notification.
  • the communication device 100-1 # 1 causes the first communication unit 130 to sleep when receiving the reception confirmation / sleeping notification. Specifically, when the reception confirmation / sleeping notification is received by the second communication unit 140, the control unit 120 shifts the first communication unit 130 to the sleep state.
  • connection of communication When it is difficult to communicate with the wireless LAN standard, the communication device 100-1 disconnects the wireless LAN standard connection.
  • the communication device 100-1 # 1 disconnects the wireless LAN standard connection. More specifically, the control unit 120 first causes the first communication unit 130 to retransmit the activation request notification when the activation completion notification is not received between the transmission of the activation request notification and the elapse of a predetermined time. .
  • the control unit 120 performs wireless LAN standard connection disconnection processing. For example, when the number of retransmissions of the activation request notification reaches the upper limit, the control unit 120 performs a De-authentication process on the communication device 100-1 that is the destination of the activation request notification.
  • the communication device 100-1 # 2 disconnects the connection of the wireless LAN standard when the frame for the data transmission request by the communication operation of the wireless LAN standard is not received.
  • the control unit 120 first sends an activation completion notification to the first communication unit 130 when a frame for a data transmission request is not received between the transmission of the activation completion notification and the elapse of a predetermined time. Retransmission is performed using wireless LAN standard communication.
  • the control unit 120 causes the first communication unit 130 to retransmit the activation completion notification when a predetermined time has elapsed from the transmission of the activation completion notification without receiving at least a part of the data frame.
  • the control unit 120 performs a first communication disapproval notification (hereinafter, referred to as a notification that the wireless LAN standard communication operation by the first communication unit 130 is difficult). (Also referred to as proxy connection impossibility notification) is transmitted to the second communication unit 140. For example, when the number of retransmissions of the activation completion notification reaches the upper limit, the control unit 120 instructs the second communication unit to transmit a proxy connection impossible notification.
  • a first communication disapproval notification hereinafter, referred to as a notification that the wireless LAN standard communication operation by the first communication unit 130 is difficult.
  • proxy connection impossibility notification is transmitted to the second communication unit 140.
  • the control unit 120 causes the second communication unit 140 to transmit a communication end notification for notifying the end of communication (hereinafter also referred to as proxy connection end notification).
  • proxy connection end notification for notifying the end of communication
  • the control unit 120 causes the second communication unit 140 to transmit a proxy connection end notification toward the transmission source of the proxy connection impossible notification.
  • the control unit 120 performs connection disconnection processing of the wireless LAN standard. Specifically, when the proxy connection end notification is received by the second communication unit 140, the control unit 120 transmits a wireless LAN to the communication device 100-1 that is the transmission source of the proxy connection end notification, that is, the destination of the start completion notification. Perform standard de-authentication processing. When the proxy connection end notification is not received, the proxy connection impossible notification is retransmitted. When the number of retransmissions of the proxy connection impossible notification reaches the upper limit, a wireless LAN standard connection disconnection process is performed.
  • the communication device 100-1 # 1 disconnects the connection of the wireless LAN standard when the reception confirmation notification as a response to the frame for the data transmission request by the wireless LAN standard communication is not received. Specifically, first, when the reception confirmation notification is not received between the transmission of the frame for the data transmission request and the elapse of a predetermined time, the control unit 120 uses the data using wireless LAN standard communication. The first communication unit 130 is made to retransmit the frame for the transmission request. The control unit 120 operates in the same manner even when a reception confirmation / sleeping notification is used instead of the reception confirmation notification.
  • the control unit 120 performs connection disconnection processing according to the wireless LAN standard. For example, when the number of retransmissions of a data frame reaches the upper limit, the control unit 120 performs a De-authentication process on the communication device 100-1 that is the destination of the data frame. When the proxy connection impossible notification is received before the number of retransmissions of the data frame reaches the upper limit, the control unit 120 causes the second communication unit 140 to transmit the proxy connection end notification and also terminates the proxy connection end The communication device 100-1 that is the destination of the notification performs a disconnection process of the wireless LAN standard connection.
  • FIG. 9 is a diagram illustrating a configuration example of the proxy connection impossibility notification communicated in the communication device 100-1 according to the present embodiment.
  • FIG. 10 illustrates the proxy communication performed in the communication device 100-1 according to the present embodiment. It is a figure which shows the structural example of a connection completion notification.
  • the proxy connection impossible notification may be a kind of control PDU.
  • the proxy connection impossible notification includes fields such as Header, Opcode, and Control Data, as shown in FIG. Opcode stores information indicating that connection is impossible, that is, No Connect.
  • Control Data includes fields such as Target Address, Own Address, and RFU.
  • the Target Address stores address information of the communication device 100-1 that is the destination of the proxy connection impossible notification.
  • Own Address stores the address information of the own device.
  • the proxy connection end notification can be a kind of control PDU.
  • the proxy connection end notification includes fields such as Header, Opcode, and Control Data, as shown in FIG.
  • Opcode information indicating the end of connection, that is, Close Proxy is stored.
  • Control Data includes fields such as Target Address, Own Address, and RFU.
  • Address information of the communication device 100-1 that is the destination of the proxy connection end notification is stored in Target Address.
  • Own Address stores the address information of the own device.
  • FIG. 11 is a sequence diagram conceptually showing the preliminary processing of the communication apparatus 100-1 according to the present embodiment.
  • the first communication systems # 1 and # 2 perform connection processing of the first communication system (step S201). Specifically, the first communication system # 2 grasps the presence of the communication device 100-1 # 1 in advance by receiving a beacon transmitted from the first communication system # 1. Then, the first communication system # 2 transmits an association request to the communication device 100-1 # 1 when performing communication with the first communication system # 1. When the first communication system # 1 receives an association request, the first communication system # 1 performs an association process including an association response.
  • the first communication systems # 1 and # 2 perform authentication processing of the first communication system (step S202). Specifically, the first communication system # 1 transmits a frame including encryption information used in wireless LAN standard communication after the completion of the association process, and the first communication system # 2 receives the frame. . In this way, the authentication process is performed.
  • the first communication systems # 1 and # 2 each determine whether or not the second communication system can be used (steps S203 and S204). Specifically, each of the first communication systems # 1 and # 2 determines whether or not the second communication system can be used after completion of the association process and the authentication process.
  • the first communication systems # 1 and # 2 exchange correspondence information of each second communication system with each other (step S205). Specifically, the first communication systems # 1 and # 2 exchange frames in which correspondence information including the determination result of availability of the second communication system is stored. For example, the correspondence information is stored in the frame as capability information, and the frame can be exchanged.
  • FIG. 12 is a sequence diagram conceptually showing the transition process of the communication device 100-1 according to the present embodiment to the sleep state.
  • the first communication system # 1 determines whether the first communication system # 1 can sleep or not (step S301). Specifically, the first communication system # 1 determines whether or not the first communication system # 1 can sleep based on the correspondence information exchanged in the pre-processing.
  • the first communication system # 1 instructs the second communication system # 1 to perform proxy connection (step S302). Specifically, the first communication system # 1 activates the second communication system # 1 when it is determined that the first communication system # 1 can sleep.
  • the second communication system # 1 may be activated in advance, or may already be in a state where communication with the second communication system # 2 is possible.
  • the first communication system # 1 transmits a sleep request notification to the communication device 100-1 # 2 (step S303). Specifically, the first communication system # 1 transmits a sleep request notification to the communication device 100-1 # 2 when the proxy connection of the second communication system # 1 is started.
  • the first communication system # 2 that has received the sleep request notification determines whether or not the first communication system # 2 can sleep (step S304). Specifically, when the sleep request notification is received, the first communication system # 2 determines whether or not the first communication system # 2 is allowed to sleep based on the correspondence information exchanged in the preliminary process.
  • the first communication system # 2 instructs the second communication system # 2 to perform proxy connection and sleep notification (step S305). Specifically, the first communication system # 2 activates the second communication system # 2 when it is determined that the first communication system # 2 can sleep. Then, the first communication system # 2 instructs the second communication system # 2 to transmit a sleep notification. If the second communication system # 2 has already been activated, only a sleep notification transmission instruction is issued.
  • the second communication system # 2 transmits a sleep notification to the communication device 100-1 # 1 (step S306). Specifically, the second communication system # 2 generates a sleep notification based on an instruction from the first communication system # 2, and transmits the generated sleep notification to the communication device 100-1 # 1.
  • the first communication system # 2 sleeps (step S307). Specifically, the first communication system # 2 shifts to the sleep state after the transmission of the sleep notification by the second communication system # 2 is completed. Note that the first communication system # 2 may enter a sleep state before the completion of transmission of the sleep notification by the second communication system # 2. In addition, connection confirmation is performed intermittently while the first communication system # 2 is sleeping.
  • the second communication system # 1 that has received the sleep notification instructs the first communication system # 1 to sleep (step S308). Specifically, when the sleep communication is received, the second communication system # 1 instructs the first communication system # 1 to shift to the sleep state.
  • the first communication system # 1 that has received the sleep instruction sleeps (step S309). Specifically, the first communication system # 1 shifts to a sleep state based on an instruction from the second communication system # 1.
  • FIG. 13 is a sequence diagram conceptually showing a return process from the sleep state and a re-migration process to the sleep state of the communication apparatus 100-1 according to the present embodiment. Note that description of processing that is substantially the same as the processing described above is omitted.
  • the second communication system # 1 accepts the data transmission request (step S401). Specifically, when a data transmission request is generated in the own apparatus, the data transmission request is notified from the upper communication layer to the second communication system # 1.
  • the second communication system # 1 that has received the data transmission request transmits an activation request notification to the communication device 100-1 # 2 (step S402). Specifically, the second communication system # 1 notified of the data transmission request generates an activation request notification including data information related to the data transmission request, and the second communication system # according to the access procedure of the second communication standard. The activation request notification generated in step 2 is transmitted.
  • the second communication system # 1 activates the first communication system # 1 (step S403). Specifically, the second communication system # 1 transmits the activation request notification and activates the first communication system # 1.
  • the activated first communication system # 1 starts processing related to transmission permission / inhibition determination (step S404). Specifically, the first communication system # 1 starts carrier sense for determining whether transmission is possible after activation.
  • the second communication system # 2 that has received the activation request notification activates the first communication system # 2 (step S405). Specifically, the second communication system # 2 activates the first communication system # 2 when the activation request notification is received.
  • the activated first communication system # 2 determines whether or not transmission is possible (step S406). Specifically, the first communication system # 2 starts carrier sense after activation, and determines whether the transmission path is free based on the result of carrier sense.
  • the first communication system # 2 transmits a startup completion notification to the communication device 100-1 # 1 (step S407). Specifically, when the first communication system # 2 determines that the transmission path is free, the first communication system # 2 sends an activation completion notification including communication parameters to be used in wireless LAN standard communication to the communication device 100-1 # 1. Send.
  • the first communication system # 1 that has received the activation completion notification transmits data to the communication device 100-1 # 2 (step S408). Specifically, when the first communication system # 1 receives the activation completion notification, the first communication system # 1 transmits a data frame including data related to data transmission.
  • the first communication system # 2 that has successfully received the data determines whether the first communication system # 2 can sleep or not (step S409). Specifically, when the data frame is successfully received, the first communication system # 2 determines whether the first communication system # 2 can sleep or not based on the correspondence information or the like.
  • the first communication system # 2 instructs the second communication system # 2 to perform proxy connection, reception confirmation notification, and sleep notification (step S410). Specifically, when the first communication system # 2 can sleep, the first communication system # 2 activates the second communication system # 2, and transmits a reception confirmation notification and a sleep notification for the data frame. 2 Instruct the communication system # 2.
  • the second communication system # 2 transmits a reception confirmation / sleep notification to the communication device 100-1 # 1 (step S411), and then the first communication system # 2 sleeps (step S412). Specifically, the second communication system # 2 transmits a reception confirmation / dormant notification to the communication device 100-1 # 1 based on an instruction from the first communication system # 2. Thereafter, the first communication system # 2 shifts to a sleep state.
  • the second communication system # 1 that has received the reception confirmation / sleep notification instructs the first communication system # 1 to sleep (step S413). Specifically, when the reception confirmation / sleeping notification is received, the second communication system # 1 instructs the first communication system # 1 to shift to the sleep state.
  • the first communication system # 1 that has received the sleep instruction sleeps (step S414).
  • FIG. 14 is a flowchart conceptually showing the preliminary processing of the communication apparatus 100-1 according to the present embodiment.
  • the communication device 100-1 executes connection processing of the first communication system, that is, association processing (step S501). Specifically, when communication device 100-1 # 1 operates as a slave unit, when a beacon is received from communication device 100-1 # 2 operating as an AP, communication device 100-1 # 1 associates with the AP. Send a request. When the communication device 100-1 # 2 receives the association request, the communication device 100-1 # 2 transmits an association response.
  • the communication device 100-1 executes an authentication process, that is, an authentication process of the first communication system (step S502). Specifically, communication device 100-1 # 1 transmits an authentication request to the AP. When the authentication request is received, communication device 100-1 # 2 transmits an authentication response if the connection is permitted. Thereby, encryption information is exchanged between the AP and the slave unit.
  • the communication device 100-1 determines whether or not the second communication system can be used (step S503). Specifically, the first communication system determines whether or not the second communication system of its own device can be used.
  • the communication device 100-1 exchanges correspondence information of the second communication system (step S504). Specifically, the first communication system exchanges frames that include capability information about the second communication system.
  • the communication device 100-1 determines whether or not the proxy connection by the second communication system can be used (step S505). Specifically, the first communication system determines whether proxy connection by the second communication system is possible based on the exchanged capability information.
  • the communication device 100-1 stores the proxy connection information of the second communication system (step S506). Specifically, when it is determined that the proxy connection is available, the first communication system stores capability information in a storage unit that is separately provided in the communication device 100-1.
  • FIG. 15 is a flowchart conceptually showing a transition process of the communication device 100-1 # 1 according to the present embodiment to the spontaneous sleep state. Note that description of processing that is substantially the same as the processing described above is omitted.
  • the communication device 100-1 # 1 determines whether the first communication system # 1 can sleep or not (step S601). Specifically, the first communication system # 1 determines whether a sleep condition such as a data transmission request not occurring for a predetermined time is satisfied. Note that the sleep condition may be a change in the power supply state to the communication device 100-1 # 1 for power saving or a decrease in the remaining battery level of the communication device 100-1 # 1.
  • the communication device 100-1 # 1 determines whether or not the proxy connection by the second communication system # 1 is available (step S602). Specifically, when it is determined that the first communication system # 1 can sleep, the first communication system # 1 determines the availability of the proxy connection based on the stored proxy connection information, that is, capability information.
  • the communication device 100-1 # 1 starts the proxy connection in the second communication system # 1 (step S603). Specifically, when it is determined that the proxy connection is available, the first communication system # 1 causes the second communication system # 1 to start the proxy connection. Note that the second communication system # 1 may transition to a state where proxy connection is available.
  • the communication device 100-1 # 1 determines whether or not the transmission path of the first communication system # 1 can be used (step S604). Specifically, the first communication system # 1 determines whether or not the transmission path is free by performing carrier sense.
  • the communication device 100-1 # 1 transmits a sleep request notification in the first communication system # 1 (step S605). Specifically, when the first communication system # 1 determines that the transmission path is free, the first communication system # 1 generates a sleep request notification including a sleep parameter requested by the communication partner, and outputs the generated sleep request notification. Send.
  • the communication device 100-1 # 1 waits until a sleep notification is received (step S606). Specifically, the second communication system # 1 waits for a sleep notification transmitted as a response to the sleep request notification.
  • the communication device 100-1 # 1 sleeps the first communication system # 1 (step S607). Specifically, when the sleep communication is received, the second communication system # 1 shifts the first communication system # 1 to the sleep state. Further, the sleep control of the first communication system # 1 is performed based on the sleep parameter included in the sleep notification. Note that the second communication system # 1 may notify the first communication system # 1 that the sleep notification has been received, and the first communication system # 1 may determine whether or not to enter the sleep state.
  • the communication device 100-1 # 1 determines whether or not a predetermined time has elapsed since the transmission of the sleep request notification while waiting for reception of the sleep notification (step S608). Specifically, the first communication system # 1 determines whether a predetermined time has elapsed since the transmission of the sleep request notification without receiving the sleep notification by the second communication system # 1.
  • the communication device 100-1 # 1 determines whether the number of retransmissions of the sleep request notification exceeds the predetermined number (step S609). Specifically, if the first communication system # 1 determines that a predetermined time has elapsed since the transmission of the sleep request notification without receiving the sleep notification, the first communication system # 1 determines whether the number of retransmissions of the sleep request notification has reached the upper limit. judge. When it is determined that the number of retransmissions has not reached the upper limit, the first communication system # 1 retransmits the sleep request notification.
  • the process is returned to step S604, and a transmission path availability determination is performed before the sleep request notification is retransmitted. If it is determined that the number of retransmissions has reached the upper limit, the first communication system # 1 does not retransmit the sleep request notification, and the process ends. That is, in this case, the first communication system # 1 does not sleep.
  • the communication device 100-1 # 1 ends the process.
  • FIG. 16 is a flowchart conceptually showing a transition process to a sleep state based on a sleep request of the communication device 100-1 # 2 according to this embodiment. Note that description of processing that is substantially the same as the processing described above is omitted.
  • the communication device 100-1 # 2 waits until a sleep request notification is received by the first communication system # 2 (step S701). Specifically, the first communication system # 2 waits for a sleep request notification.
  • the communication device 100-1 # 2 acquires the sleep parameter of the first communication system # 2 (step S702). Specifically, when the sleep request notification is received, the first communication system # 2 acquires a sleep parameter requested by the communication partner included in the sleep request notification. Moreover, 1st communication system # 2 acquires the sleep parameter of an own apparatus.
  • the communication device 100-1 # 2 determines whether the first communication system # 2 can sleep or not (step S703). Specifically, the first communication system # 2 determines whether or not it can sleep on the basis of the acquired requested sleep parameter and the sleep parameter of the own device.
  • the communication device 100-1 # 2 determines whether or not the proxy connection by the second communication system # 2 is available (step S704), and the second communication system If it is determined that the proxy connection by # 2 is available, the proxy connection in the second communication system # 2 is started (step S705).
  • the communication device 100-1 # 2 transmits a sleep notification by the second communication system # 2 (step S706). Specifically, the second communication system # 2 transmits a sleep notification including a sleep parameter used in the sleep of the first communication system # 2.
  • the communication device 100-1 # 2 causes the first communication system # 2 to sleep (step S707). Specifically, the first communication system # 2 causes the second communication system # 2 to transmit a sleep notification, and then transitions to a sleep state. Note that sleep control of the first communication system # 2 is performed based on the sleep parameter that is included in the sleep notification.
  • FIG. 17 is a flowchart conceptually showing a return process from the sleep state of the communication apparatus 100-1 # 1 according to the present embodiment and a re-migration process to the sleep state. Note that description of processing that is substantially the same as the processing described above is omitted.
  • the communication device 100-1 # 1 waits until a data transmission request is generated (step S801). Specifically, while the first communication system # 1 is in a sleep state, the second communication system # 1 waits for a data transmission request. For example, a data transmission request is accepted via the interface unit 111 of the data processing unit 110. The data transmission request may be generated in the communication device 100-1 # 1, or may be generated in an external device connected to the communication device 100-1 # 1. Further, a data transmission request may be generated while communication related to the proxy connection by the second communication system # 1 is being performed.
  • the communication device 100-1 # 1 acquires information relating to data to be transmitted (step S802). Specifically, when a data transmission request using wireless LAN standard communication occurs, the second communication system # 1 acquires data information related to the data transmission request.
  • the data information may be a data length of data to be transmitted and attribute information of the data. The data length may be calculated every time a data transmission request occurs.
  • the communication device 100-1 # 1 activates the first communication system # 1 (step S803). Specifically, the second communication system # 1 returns the first communication system # 1 from the sleep state.
  • the communication device 100-1 # 1 transmits an activation request notification in the second communication system # 1 (step S804). Specifically, the second communication system # 1 transmits an activation request notification including the acquired data information.
  • the communication device 100-1 # 1 waits until the first communication system # 1 receives the activation completion notification (step S805). Specifically, the first communication system # 1 waits for an activation completion notification that is a response to the activation request notification.
  • the communication device 100-1 # 1 acquires the communication parameters of the first communication system # 1 (step S806). Specifically, when the first communication system # 1 receives the activation completion notification, the first communication system # 1 acquires a wireless LAN standard communication parameter included in the activation completion notification.
  • the communication parameter may be a modulation scheme and a coding rate, a frequency bandwidth, a priority parameter, or an IFS (Inter Frame Space) value or type.
  • the communication device 100-1 # 1 determines whether or not the transmission path of the first communication system # 1 is available (step S807), and determines that the transmission path of the first communication system # 1 is available. Then, data is transmitted by the first communication system # 1 (step S808). Specifically, the first communication system # 1 determines whether or not the transmission path is free. When it is determined that the transmission path is free, transmission of the data frame is started. For example, when a frame is not transmitted over an arbitration interframe space (AIFS) defined in the data access category and a predetermined backoff period, it is determined that the transmission path is available.
  • AIFS arbitration interframe space
  • the communication device 100-1 # 1 waits until the second communication system # 1 receives a reception confirmation / sleep notification (step S809). Specifically, the second communication system # 1 waits for a reception confirmation / sleeping notification after transmitting a data frame using wireless LAN standard communication.
  • the communication device 100-1 # 1 sleeps the first communication system # 1 (step S810). Specifically, the first communication system # 1 transitions to a sleep state when a reception confirmation / sleep notification is received by the second communication system # 1.
  • the communication device 100-1 # 1 determines whether a predetermined time has elapsed since the transmission of the activation request notification while waiting for reception of the activation completion notification in step S805 (step S811). Specifically, the first communication system # 1 determines whether a predetermined time has elapsed since the activation request notification was transmitted without receiving the activation completion notification.
  • the communication device 100-1 # 1 determines whether the number of retransmissions of the activation request notification exceeds the predetermined number (step S812). Specifically, if the first communication system # 1 determines that a predetermined time has elapsed from the transmission of the activation request notification without receiving the activation completion notification, has the number of retransmissions of the activation request notification reached the upper limit? Determine.
  • the communication device 100-1 # 1 executes connection disconnection processing for the communication partner (step S813). Specifically, when it is determined that the number of retransmissions of the activation request notification has reached the upper limit, the first communication system # 1 determines the wireless LAN standard for the communication device 100-1 # 1 that is the destination of the activation request notification. Execute the De-authentication process.
  • the communication device 100-1 # 1 displays that the connection with the communication partner has been disconnected (step S814).
  • the communication device 100-1 # 1 includes a separate display unit, and when the wireless LAN standard disconnection process is executed, the control unit 120 displays that the connection of the wireless LAN standard has been disconnected. To display.
  • the communication device 100-1 # 1 determines whether or not the proxy connection impossible notification is received in the second communication system # 1 in a state where the reception confirmation / sleeping notification is not received in step S809 (step S815). Specifically, the second communication system # 1 determines whether or not a proxy connection impossible notification is received while waiting for a reception confirmation / sleep notification.
  • the communication device 100-1 # 1 transmits a proxy connection end notification in the second communication system # 1 (step S816). Specifically, when it is determined that the proxy connection impossible notification is received, the second communication system # 1 transmits a proxy connection end notification. Then, after transmitting the proxy connection end notification, the process proceeds to step S813, and a wireless LAN standard connection disconnection process is performed.
  • the communication device 100-1 # 1 determines whether or not a predetermined time has elapsed since the data transmission without receiving the reception confirmation / sleeping notification and the proxy connection impossible notification in steps S809 and S815 (step S817). Specifically, the first communication system # 1 starts transmission of a data frame using wireless LAN standard communication while the second communication system # 1 does not receive both the reception confirmation / sleeping notification and the proxy connection impossible notification. It is determined whether a predetermined time has elapsed.
  • the communication device 100-1 # 1 determines whether the number of data retransmissions exceeds a predetermined number (step S818). Specifically, the first communication system # 1 determines the number of retransmissions of the data frame when it is determined that a predetermined time has passed since the reception confirmation / sleeping notification and the proxy connection impossible notification are not received. It is determined whether has reached the upper limit. If it is determined that the number of retransmissions has reached the upper limit, the process proceeds to step S813, and a wireless LAN standard connection disconnection process is performed. If it is determined that the number of retransmissions has not reached the upper limit, the process returns to step S807, and the data frame is retransmitted after determining whether or not the transmission path can be used.
  • FIG. 18 is a flowchart conceptually showing a return process from the sleep state and a re-migration process to the sleep state based on the activation request of the communication device 100-1 # 2 according to the present embodiment. Note that description of processing that is substantially the same as the processing described above is omitted.
  • the communication device 100-1 # 2 waits until the second communication system # 2 receives the activation request notification (step S901). Specifically, the second communication system # 2 waits for an activation request notification while the first communication system # 2 is sleeping.
  • the communication device 100-1 # 2 acquires information related to the data scheduled to be transmitted (step S902). Specifically, when the activation request notification is received, the second communication system # 2 acquires the data information included in the activation request notification, and temporarily stores the data information in the storage unit.
  • the communication device 100-1 # 2 activates the first communication system # 2 (step S903), and determines the communication parameters of the first communication system # 2 (step S904).
  • the second communication system # 2 activates the first communication system # 2.
  • the activated first communication system # 2 determines communication parameters used in the wireless LAN standard based on the stored data information.
  • the communication device 100-1 # 2 determines whether or not the transmission path of the first communication system # 2 is available (step S905), and determines that the transmission path of the first communication system # 2 is available. Then, the first communication system # 2 transmits an activation completion notification (step S906). Specifically, the first communication system # 2 determines whether or not the transmission path is free. When it is determined that the transmission path is free, the first communication system # 2 transmits a startup completion notification including the determined communication parameter. Note that the first communication system # 2 may notify other communication devices that frame transmission to the own device is to be performed when the activation completion notification is transmitted. For example, the first communication system # 2 transmits a CTS frame (CTS to self) addressed to itself before transmitting the activation completion notification.
  • CTS CTS frame
  • the communication device 100-1 # 2 waits until data is received by the first communication system # 2 (step S907). Specifically, the first communication system # 2 waits for a data frame transmitted after the activation completion notification.
  • the communication device 100-1 # 2 determines whether the first communication system # 2 can sleep or not (step S908). Specifically, when the data frame is successfully received, the first communication system # 2 determines whether it can sleep. Note that whether or not sleep is possible may be determined based on the sleep parameter used when the transition to the sleep state is first performed.
  • the communication device 100-1 # 2 transmits a reception confirmation / sleep notification by the second communication system # 2 (step S909). Specifically, when it is determined that the first communication system # 2 can sleep, the first communication system # 2 causes the second communication system # 2 to transmit a reception confirmation / sleep notification.
  • the communication device 100-1 # 2 causes the first communication system # 2 to sleep (step S910). Specifically, the first communication system # 2 transitions to a sleep state when a reception confirmation / sleep notification is transmitted by the second communication system # 2.
  • the communication device 100-1 # 2 determines whether or not a predetermined time has elapsed since the transmission of the start completion notification while waiting for the reception of the data in step S907 (step S911). Specifically, the first communication system # 2 determines whether a predetermined time has elapsed since the start completion notification was transmitted without receiving the data frame.
  • the communication device 100-1 # 2 determines whether the number of retransmissions of the activation completion notification exceeds the predetermined number (step S912). Specifically, if the first communication system # 2 determines that a predetermined time has elapsed since the transmission of the activation completion notification without receiving a data frame, the first communication system # 2 determines whether the number of retransmissions of the activation completion notification has reached the upper limit. judge. If it is determined that the number of retransmissions has not reached the upper limit, the first communication system # 2 retransmits the activation completion notification. In this case, the process returns to step S904, and the communication parameter is re-determined and the transmission path availability determination is performed before the activation completion notification is retransmitted.
  • the communication device 100-1 # 2 transmits a proxy connection impossible notification in the second communication system # 2 (step S913). Specifically, when it is determined that the number of retransmissions of the activation completion notification has reached the upper limit, the second communication system # 2 transmits a proxy connection impossible notification.
  • the communication device 100-1 # 2 determines whether or not a proxy connection end notification is received in the second communication system # 2 (step S914). Specifically, the second communication system # 2 waits for a proxy connection end notification after transmitting the proxy connection impossible notification.
  • the communication device 100-1 # 2 executes connection disconnection processing for the communication partner (step S915), and displays that the connection with the communication partner has been disconnected. (Step S916). Specifically, when the first communication system # 2 receives the proxy connection end notification by the second communication system # 2, the first communication system # 2 uses the wireless LAN standard for the communication device 100-1 # 2 that is the destination of the activation completion notification. Execute De-authentication processing. Then, a message indicating that the wireless LAN standard connection has been disconnected for the communication device 100-1 # 2 is displayed on the display unit.
  • the communication device 100-1 # 2 determines whether the number of retransmissions of the proxy connection impossible notification has exceeded a predetermined number (step S917). Specifically, the second communication system # 2 determines whether a predetermined time has elapsed since the transmission of the proxy connection disapproval notification without receiving the proxy connection end notification. When it is determined that a predetermined time has elapsed since the transmission of the proxy connection disabled notification, the second communication system # 2 determines whether the number of retransmissions of the proxy connection disabled notification has reached the upper limit. If it is determined that the number of retransmissions has reached the upper limit, the process proceeds to step S915, and a wireless LAN standard connection disconnection process is performed. If it is determined that the number of retransmissions has not reached the upper limit, the process returns to step S913, and the proxy connection disabling notification is retransmitted.
  • the communication device 100-1 includes the first communication unit 130 that performs the communication operation of the wireless LAN standard that starts communication by performing the connection process, and the wireless communication A second communication unit 140 that performs a communication operation of a second communication standard different from the communication operation of the LAN standard, and performs a communication operation of the second communication standard based on a request for the communication operation by the first communication unit 130.
  • the communication request using the wireless LAN standard communication is accepted by the second communication standard communication instead of the wireless LAN standard communication, so that the connection of the wireless LAN standard is maintained and the wireless LAN standard communication is maintained.
  • the communication operation period is shortened. As a result, connection processing and authentication processing are not performed each time a communication request is generated, and communication overhead can be reduced while suppressing power consumption in wireless LAN standard communication operations.
  • the communication device 100-1 performs the communication operation of the second communication standard based on the above request generated while the communication operation of the wireless LAN standard is stopped. For this reason, it is possible to further suppress power consumption by stopping the communication operation of the wireless LAN standard until a communication request is generated.
  • the communication of the second communication standard based on the above request includes the communication of the activation request notification for notifying the activation request of the communication operation of the wireless LAN standard. Therefore, when the activation of the wireless LAN standard communication is directly requested, the wireless LAN standard communication operation is activated in response to the generation of the communication request using the wireless LAN standard communication. Therefore, it is possible to suppress the lengthening of communication overhead.
  • the activation request notification includes information related to data to be transmitted by wireless LAN standard communication. For this reason, by setting the communication of the data frame based on the information about the data scheduled to be transmitted, it is possible to improve the communication efficiency and communication quality of the data frame.
  • a start completion notification for notifying the start completion of the wireless LAN standard communication operation which is a response to the above start request notification, is communicated. For this reason, it is possible to reduce the possibility of communication using wireless LAN standard communication failing by improving the certainty that communication is performed after starting the communication operation of the wireless LAN standard of the communication partner. It becomes.
  • the above start completion notification is notified using wireless LAN standard communication. For this reason, it is possible to further increase the certainty that the wireless LAN standard communication operation is activated, and to further reduce the possibility that communication using the wireless LAN standard communication will fail.
  • the communication device 100-1 uses the wireless LAN standard communication to notify the activation completion notification. Will be resent. For this reason, it is possible to suppress the suspension of data frame communication by improving the probability of successful reception of the activation completion notification.
  • the communication device 100-1 uses the second communication standard communication to notify that the wireless LAN standard communication is difficult. 1 Send a communication disabled notification. For this reason, it is possible to effectively utilize the wireless communication resources by preventing the activation completion notification from being retransmitted.
  • the above request includes a request for data transmission using wireless LAN standard communication. For this reason, when a data transmission request is generated, a wireless LAN standard communication operation is performed, so that data transmission is not performed, or data transmission is performed at a communication with a lower physical layer communication rate than wireless LAN standard communication. The data transmission time can be shortened compared to the case where it is performed.
  • the communication device 100-1 performs the communication operation of the second communication standard when the communication operation of the wireless LAN standard is stopped. For this reason, it is possible to further reduce the power consumption by the communication operation of the wireless LAN standard by reducing the opportunity for the communication operation of the wireless LAN standard.
  • a stop request notification for notifying a stop request for the wireless LAN standard communication operation is communicated, and the communication of the second communication standard related to the stop of the wireless LAN standard communication operation is a response to the stop request notification.
  • Communication of stop notification as. Therefore, by directly exchanging the wireless LAN standard communication operation stop request and the stop request notification, it is possible to shorten the time until the wireless LAN standard communication operation stops in both communication devices. .
  • the communication of the second communication standard related to the stop of the communication operation of the wireless LAN standard includes communication of a stop notification for notifying the stop of the communication operation of the wireless LAN standard. For this reason, when the communication operation of the wireless LAN standard returns from the sleep state and then shifts to the sleep state again, the stop request notification and the exchange of the stop notification are omitted, thereby reducing the communication amount and the communication of the wireless LAN standard. It is possible to reduce the overhead until the operation sleeps.
  • the communication of the second communication standard related to the stop of the communication operation of the wireless LAN standard includes communication of a reception confirmation notification communicated as a response to the frame for the request.
  • the communication operation of the second communication standard also serves as communication related to confirmation of reception of data frames, thereby reducing the amount of communication.
  • the communication device 100-1 uses the communication operation of the wireless LAN standard for the request. Resend the frame. For this reason, it is possible to improve the probability of successful reception of data frames.
  • the communication device 100-1 sends a second communication end notification for notifying the end of communication. Transmit using communication standard communication. For this reason, communication related to the communication environment such as link information regarding communication of the wireless LAN standard is shared between the communication devices 100-1, so that the communication of the wireless LAN standard is difficult in a situation where communication of the wireless LAN standard is difficult. It is possible to prevent the operation from being continued, and to effectively use radio communication resources and suppress power consumption.
  • the communication device 100-1 performs a communication operation for confirming the connection of the wireless LAN standard communication at a predetermined time interval during the stop period of the wireless LAN standard communication operation. For this reason, it is possible to prolong the sleep period of the wireless LAN standard communication operation while suppressing the disconnection of the wireless LAN standard communication during the sleep of the wireless LAN standard communication operation.
  • the communication of the second communication standard includes communication with lower power consumption than the communication of the wireless LAN standard. For this reason, it is possible to further reduce the power consumption during the sleep of the wireless LAN standard communication operation.
  • the communication device 100-1 communicates a sleep request notification using wireless LAN standard communication, and communicates a sleep notification serving as a response to the sleep request notification using second communication standard communication. For this reason, compared with the case where reception confirmation is performed in both of the sleep request notification and the sleep notification, it is possible to reduce the communication amount.
  • the communication device 100-1 communicates the activation request notification of the wireless LAN standard communication operation using the communication of the second communication standard, and becomes a response to the activation request notification using the communication of the wireless LAN standard. Communicates startup completion notification. For this reason, it is possible to reduce the amount of communication compared to the case where reception confirmation is performed in both the activation request notification and the activation completion notification.
  • the communication device 100-1 communicates a reception confirmation / sleep notification, which is a collection of reception confirmation and sleep notification regarding data transmission using wireless LAN standard communication, using communication of the second communication standard. For this reason, it is possible to reduce the amount of communication compared to the case where the reception confirmation notification and the sleep notification are communicated independently.
  • the activation completion notification includes wireless LAN standard communication parameters. For this reason, it is possible to suppress an increase in communication time by efficiently performing communication such as a data frame based on the generation of the request.
  • the re-determined communication parameters are included in the activation completion notification. For this reason, by changing the communication parameter to a value suitable for the communication environment, it is possible to improve the success rate of retransmission of the data frame based on the occurrence of the request.
  • the request for the communication operation using the wireless LAN standard communication may be a request for exchanging authentication information for the wireless LAN standard communication operation.
  • the second communication system # 1 notifies the communication partner of the generation of the request, and also communicates with the wireless LAN standard. Activate the action. For example, when an authentication information exchange request in wireless LAN standard communication is generated, the control unit 120 instructs the second communication unit 140 to transmit an activation request notification, and activates the first communication unit 130.
  • the request for the communication operation using the wireless LAN standard communication includes the request for the exchange of authentication information for the wireless LAN standard communication. For this reason, disconnection of the wireless LAN standard connection due to the expiration of the authentication information is suppressed, and it is possible to achieve both the maintenance of the wireless LAN standard connection and the extension of the sleep period.
  • Second Embodiment> The communication device 100-1 according to the first embodiment of the present disclosure has been described above. Next, the communication device 100-2 according to the second embodiment of the present disclosure will be described. In the second embodiment, reception confirmation is performed in each communication.
  • the configuration of the communication device 100-2 according to the second embodiment of the present disclosure is substantially the same as the configuration of the communication device 100-1 according to the first embodiment, and thus description thereof is omitted.
  • the communication device 100-2 # 2 that sleeps the wireless LAN standard communication operation based on the reception of the sleep request notification transmits the sleep notification using the wireless LAN standard communication instead of the second communication standard communication. .
  • the control unit 120 determines whether the first communication unit 130 can sleep. When it is determined that the first communication unit 130 can sleep, the control unit 120 causes the data processing unit 110 to generate a sleep notification, and the first communication unit 130 transmits the generated sleep notification. Note that a sleep parameter is included in the sleep notification. Further, with reference to FIG. 19, a sleep notification transmitted by the communication operation of the wireless LAN standard will be described in detail.
  • FIG. 19 is a diagram illustrating a configuration example of a sleep notification communicated in the communication device 100-2 according to the present embodiment.
  • Dormant notification can be a type of management frame.
  • the dormancy notification includes fields such as MAC Header, Information Element, and FCS, as shown in FIG.
  • Information Element includes fields such as Element ID, Length, and Sleep Mode Response Parameter.
  • the Sleep Mode Response Parameter includes fields such as Identifier, Target Address, Sleep Duration, Dose Interval, and Reserved.
  • the Target Address stores the address information of the communication device 100-2 that is the destination of the sleep notification.
  • information indicating a sleep period is stored in Sleep Duration
  • information indicating a time interval of connection confirmation in the sleep period is stored in Dose Interval.
  • the communication device 100-2 # 2 performs a connection confirmation for confirming the connection of the communication of the second communication standard instead of the sleep notification in the first embodiment.
  • Notification (hereinafter also referred to as proxy connection notification) is transmitted by communication of the second communication standard.
  • the control unit 120 instructs the second communication unit 140 to start an alternate connection after the first communication unit 130 transmits a sleep notification.
  • the second communication unit 140 instructed to start the proxy connection transmits a proxy connection notification.
  • the communication device 100-2 # 2 causes the first communication unit 130 to sleep when receiving a reception confirmation notification that is a response to the proxy connection notification.
  • the proxy connection notification will be described in detail with reference to FIG.
  • FIG. 20 is a diagram illustrating a configuration example of proxy connection notification communicated in the communication device 100-2 according to the present embodiment.
  • the proxy connection notification can be a kind of control PDU.
  • the proxy connection notification includes fields such as Header, Opcode, and Control Data, as shown in FIG.
  • Opcode stores information indicating Proxy.
  • Control Data includes fields such as Target Address, Buffered Data Length, Control Parameter, and RFU.
  • Address information of the communication device 100-2 that is the destination of the proxy connection notification is stored in Target Address.
  • information indicating the data length of data to be communicated is stored in Buffered Data Length
  • information used for access control for the second communication standard is stored in Control Parameter.
  • the communication device 100-2 # 1 that transmits the sleep request notification causes the second communication unit 140 to start the proxy connection after the sleep notification is received.
  • the control unit 120 waits until a sleep notification is received by the first communication unit 130 after the first communication unit 130 transmits the sleep request notification. Then, when a sleep notification is received, the control unit 120 causes the second communication unit 140 to start a proxy connection.
  • the communication device 100-2 # 1 causes the first communication unit 130 to sleep when the proxy connection notification is received. Specifically, when the proxy connection notification is received by the second communication unit 140, the control unit 120 causes the first communication unit 130 to sleep based on the sleep parameter included in the received sleep notification. In addition, the control unit 120 causes the second communication unit 140 to transmit a reception confirmation notification regarding the proxy connection notification.
  • the communication device 100-2 # 2 that activates the wireless LAN standard communication operation based on the reception of the activation request notification transmits a reception confirmation notification regarding the activation request notification. Specifically, when the activation request notification is received by the second communication unit 140, the control unit 120 causes the second communication unit 140 to transmit a reception confirmation notification about the activation request notification. Note that the communication device 100-2 # 1 that transmits the activation request notification may start data transmission after the reception confirmation notification is received.
  • the communication device 100-2 # 2 that receives the data transmits a reception confirmation notification about the received data using the communication operation of the wireless LAN standard instead of the communication operation of the second communication standard. Specifically, when the data frame is successfully received, the control unit 120 causes the first communication unit 130 to transmit a reception confirmation notification for the data frame.
  • the communication device 100-2 # 2 transmits a proxy connection notification by communication of the second communication standard instead of the reception confirmation / sleeping notification in the first embodiment. .
  • the control unit 120 starts the proxy connection to the second communication unit 140. Instruct.
  • the second communication unit 140 instructed to start the proxy connection transmits a proxy connection notification.
  • the communication device 100-2 # 2 causes the first communication unit 130 to sleep when receiving a reception confirmation notification that is a response to the proxy connection notification.
  • the communication device 100-2 # 1 that transmits the activation request notification causes the first communication unit 130 to sleep when the proxy connection notification is received.
  • the control unit 120 causes the first communication unit 130 to sleep based on the sleep parameter included in the sleep notification received in the past.
  • the control unit 120 causes the second communication unit 140 to transmit a reception confirmation notification regarding the proxy connection notification.
  • a sleep parameter may be included in the proxy connection notification, and a sleep notification may be transmitted instead of the proxy connection notification.
  • FIG. 21 is a sequence diagram conceptually showing the transition process to the sleep state of the communication device 100-2 according to the present embodiment.
  • the first communication system # 1 determines whether the first communication system # 1 can sleep or not (step S351), and transmits a sleep request notification to the communication device 100-2 # 2 (step S352).
  • the first communication system # 2 that has received the sleep request notification determines whether the first communication system # 2 is allowed to sleep (step S353), and transmits a sleep notification to the communication device 100-2 # 1 (step S354). Specifically, when it is determined that the first communication system # 2 can sleep, the first communication system # 2 determines a sleep parameter and communicates a sleep notification including the determined sleep parameter as a response to the sleep request notification. Transmit to device 100-2 # 1.
  • the first communication system # 1 that has received the dormancy notification instructs the second communication system # 1 to perform proxy connection (step S355).
  • the first communication system # 2 instructs the second communication system # 2 to perform the proxy connection after transmitting the sleep notification (step S356). Specifically, the first communication system # 2 activates the second communication system # 2 after transmitting the sleep notification and causes the second communication system # 2 to transmit a proxy connection notification.
  • the second communication system # 2 transmits a proxy connection notification to the communication device 100-2 # 1 (step S357). Specifically, the second communication system # 2 generates a proxy connection notification based on an instruction from the first communication system # 2, and transmits the generated proxy connection notification to the communication device 100-2 # 1.
  • the second communication system # 1 that has received the sleep notification instructs the first communication system # 1 to sleep (step S358), and transmits a reception confirmation notification for the proxy connection notification to the communication device 100-2 # 2 (step S358). S359).
  • the first communication system # 1 that has received the sleep instruction sleeps (step S360).
  • the second communication system # 2 instructs the first communication system # 2 to sleep (step S361), and the first communication system # 2 that has received the sleep instruction sleeps (step S361). S362).
  • FIG. 22 is a sequence diagram conceptually showing a return process from the sleep state and a re-migration process to the sleep state of the communication apparatus 100-2 according to the present embodiment.
  • the second communication system # 1 When the second communication system # 1 receives the data transmission request (step S451), the second communication system # 1 transmits an activation request notification to the communication device 100-2 # 2 (step S452). Then, the second communication system # 1 activates the first communication system # 1 (step S453), and the activated first communication system # 1 starts processing related to transmission permission / inhibition determination (step S454). Note that the first communication system # 1 may start processing related to the transmission path availability determination after the second communication system # 1 receives the reception confirmation notification for the activation request notification.
  • the second communication system # 2 that has received the activation request notification activates the first communication system # 2 (step S455), and transmits a reception confirmation notification about the activation request notification to the communication device 100-2 # 1. (Step S456).
  • the activated first communication system # 2 determines whether or not transmission is possible (step S457), and when it is determined that transmission is possible, transmits a startup completion notification to the communication device 100-2 # 1 (step S458).
  • the first communication system # 1 that has received the activation completion notification transmits data to the communication device 100-2 # 2 (step S459).
  • the first communication system # 2 that has successfully received the data transmits a reception confirmation notification about the received data to the communication device 100-2 # 1 (step S460).
  • the first communication system # 2 determines whether the first communication system # 2 can sleep or not (step S461). If it is determined that the first communication system # 2 can sleep, the second communication connection is set to the second connection. The communication system # 2 is instructed (step S462). Then, the second communication system # 2 transmits a proxy connection notification to the communication device 100-2 # 1 (step S463).
  • the second communication system # 1 that has received the proxy connection notification instructs the first communication system # 1 to sleep (step S464), and transmits a reception confirmation notification regarding the proxy connection notification to the communication device 100-2 # 2 ( Step S465).
  • the second communication system # 2 instructs the first communication system # 2 to sleep (step S467), and the first communication system # 2 that has received the sleep instruction sleeps (step S467). S468). ((Processing details))
  • the pre-processing is substantially the same as that of the first embodiment, and a description thereof will be omitted. Also, description of processing that is substantially the same as the processing described above is omitted.
  • FIG. 23 is a flowchart conceptually showing a transition process of the communication device 100-2 # 1 according to the present embodiment to the spontaneous sleep state.
  • the communication device 100-2 # 1 determines whether or not the first communication system can sleep (step S651). If it is determined that the first communication system # 1 can sleep, proxy connection by the second communication system # 1 is performed. It is determined whether or not it is available (step S652).
  • the communication device 100-2 # 1 determines whether or not the transmission path of the first communication system # 1 is available (step S653). If it is determined that the transmission path of the first communication system # 1 is available, the first communication system # 1 transmits a sleep request notification to the communication device 100-2 # 2 (step S654).
  • the communication device 100-2 # 1 waits until a reception confirmation notification for the sleep request notification is received in the first communication system (step S655). Specifically, the first communication system # 1 waits for a reception confirmation notification regarding the sleep request notification.
  • the communication device 100-2 # 1 starts the proxy connection in the second communication system # 1 (step S656), and waits until the proxy connection notification is received. (Step S657). Specifically, the second communication system # 1 starts to wait for a proxy connection notification when the first communication system # 1 receives a reception confirmation about the sleep request notification.
  • the communication device 100-2 # 1 transmits a reception confirmation notification for the proxy connection notification to the communication device 100-2 # 2 (step S658) and the first communication system # 1. Is put to sleep (step S659). Specifically, when the proxy connection notification is received, the second communication system # 1 transmits a reception confirmation notification regarding the proxy connection notification to the communication device 100-2 # 2. Then, the second communication system # 1 shifts the first communication system # 1 to the sleep state.
  • FIG. 24 is a flowchart conceptually showing a transition process to a sleep state based on a sleep request of the communication device 100-2 # 2 according to the present embodiment.
  • the communication device 100-2 # 2 waits until the sleep request notification is received by the first communication system # 2 (step S751). When the sleep request notification is received, the communication device 100-2 # 2 sets the sleep parameter of the first communication system # 2. Obtain (step S752). Then, the communication device 100-2 # 2 determines whether the first communication system # 2 can sleep or not (step S753).
  • the communication device 100-2 # 2 transmits a reception confirmation notification about the sleep request notification to the communication device 100-2 # 1 in the first communication system. (Step S754).
  • the communication device 100-2 # 2 determines whether or not the proxy connection by the second communication system # 2 is available (step S755), and determines that the proxy connection by the second communication system # 2 is available. Then, proxy connection in the second communication system # 2 is started (step S756).
  • the communication device 100-2 # 2 transmits a proxy connection notification to the communication device 100-2 # 1 in the second communication system # 2 (step S757), and a reception confirmation notification for the proxy connection notification is received. (Step S758).
  • the communication device 100-2 # 2 causes the first communication system # 2 to sleep (step S759).
  • FIG. 25 is a flowchart conceptually showing a return process from the sleep state of the communication apparatus 100-2 # 1 according to the present embodiment and a re-migration process to the sleep state.
  • the communication device 100-2 # 1 waits until a data transmission request is generated (step S851), and when the data transmission request is generated, acquires information related to data to be transmitted (step S852). Next, the communication device 100-2 # 1 activates the first communication system # 1 (step S853), and transmits an activation request notification to the communication device 100-2 # 2 in the second communication system # 1 (step S854). ).
  • the communication device 100-2 # 1 waits until reception confirmation about the activation request notification is received in the second communication system # 1 (step S855).
  • the communication system # 1 waits until an activation completion notification is received (step S856).
  • the communication device 100-2 # 1 acquires the communication parameters of the first communication system # 1 (step S857). Next, the communication device 100-2 # 1 determines whether or not the transmission path of the first communication system # 1 is available (step S858), and determines that the transmission path of the first communication system # 1 is available. The first communication system # 1 transmits data to the communication device 100-2 # 2 (step S859).
  • communication apparatus 100-2 # 1 waits until reception confirmation notification of data is received by first communication system # 1 (step S860), and after receiving the reception confirmation notification, second communication continues The system # 1 waits until a proxy connection notification is received (step S861). When the proxy connection notification is received, the communication device 100-2 # 1 causes the first communication system # 1 to sleep (step S863).
  • FIG. 26 is a flowchart conceptually showing a return process from the sleep state and a re-migration process to the sleep state based on the activation request of the communication device 100-2 # 2 according to the present embodiment.
  • the communication device 100-2 # 2 waits until the activation request notification is received by the second communication system # 2 (step S951).
  • the communication device 100-2 # 2 acquires information related to data scheduled to be transmitted. (Step S952).
  • the communication device 100-2 # 2 activates the first communication system # 2 (step S953).
  • the communication device 100-2 # 2 transmits a reception confirmation notification for the activation request notification to the communication device 100-2 # 1 in the second communication system # 2 (step S954).
  • the communication device 100-2 # 2 determines communication parameters of the first communication system # 2 (step S955), and determines whether or not the transmission path of the first communication system # 2 is available (step S956). If the communication device 100-2 # 2 determines that the transmission path of the first communication system # 2 is available, the communication device 100-2 # 1 sends an activation completion notification to the communication device 100-2 # 1. Transmit (step S957).
  • communication apparatus 100-2 # 2 waits until data is received by first communication system # 2 (step S958).
  • data received by first communication system # 2 is received. Is sent to the communication device 100-2 # 1 (step S959).
  • the communication device 100-2 # 2 determines whether or not the first communication system # 2 can sleep (step S960), and if it is determined that the first communication system # 2 can sleep, the second communication system In # 2, the proxy connection notification is transmitted to the communication device 100-2 # 1 (step S961).
  • the communication device 100-2 # 2 stands by until the second communication system # 2 receives a reception confirmation notification about the proxy connection notification (step S962). 1
  • the communication system # 2 is put to sleep (step S963).
  • the communication operation of the second communication standard related to the stop of the communication operation of the wireless LAN standard is the connection for confirming the connection of the communication of the second communication standard. Includes communication of confirmation notifications.
  • the existing communication is used as a wireless LAN standard communication, that is, the sleep trigger of the first communication unit 130, so that the amount of modification in the existing communication device is reduced, and the existing communication device according to the present embodiment. The cost for applying the configuration can be reduced.
  • reception confirmation is performed in each communication of the wireless LAN standard communication operation and the second communication standard communication operation. For this reason, when communication is completed within the range of each communication standard or specification, complication of communication control can be suppressed as compared with the first embodiment.
  • the communication format of the second communication standard that is performed when the communication operation of the wireless LAN standard is sleeping may be selected from a plurality of formats. Specifically, when the first communication system # 2 is put to sleep based on the sleep request notification, the communication device 100-2 # 2 is based on the response content by the first communication system # 2 regarding the sleep request notification. A response format by the second communication system # 2 is determined. More specifically, the second communication system # 2 selects one of proxy connection notification and sleep notification as the response format.
  • the first communication system # 2 when it is determined that the first communication system # 2 can sleep, instead of the sleep notification, the first communication system # 2 transmits a reception confirmation for the received sleep request notification to the communication device 100-2 # 1.
  • the second communication system # 2 selects the sleep notification as the response format, and transmits the sleep notification to the communication device 100-2 # 1.
  • the format of the second communication standard may be selected in response to the data transmission request.
  • the second communication system # 2 selects one of a proxy connection notification, a data reception confirmation notification, a sleep notification, or a reception confirmation / sleep notification.
  • the communication format of the second communication standard that is performed when the communication of the wireless LAN standard is put to sleep is selected from a plurality of formats. For this reason, communication efficiency can be improved by performing communication of the second communication standard in a format suitable for the situation.
  • FIG. 27 is an explanatory diagram illustrating a hardware configuration of the communication device 100 according to an embodiment of the present disclosure.
  • the communication device 100 includes a CPU (Central Processing Unit) 152, a ROM (Read Only Memory) 154, a RAM (Random Access Memory) 156, a bridge 158, a bus 160, and an interface 162.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the CPU 152 functions as an arithmetic processing unit, and realizes part of the operations of the data processing unit 110 and the control unit 120 in the communication device 100 in cooperation with various programs. Further, the CPU 152 may be a microprocessor.
  • the ROM 154 stores programs or calculation parameters used by the CPU 152.
  • the RAM 156 temporarily stores a program used in the execution of the CPU 152 or a parameter that changes as appropriate in the execution.
  • the ROM 154 and the RAM 156 realize a part of the storage unit in the communication device 100.
  • the CPU 152, the ROM 154, and the RAM 156 are connected to each other by an internal bus including a CPU bus.
  • the input device 164 generates an input signal based on an input by the user, such as a mouse, a keyboard, a touch panel, a button, a microphone, a switch, and a lever, and an input by the user, and outputs the input signal to the CPU 152. It consists of a control circuit.
  • a user of the communication device 100 can input various data and instruct a processing operation to the communication device 100 by operating the input device 164.
  • the output device 166 performs output to devices such as a liquid crystal display (LCD) device, an OLED (Organic Light Emitting Diode) device, and a lamp. Further, the output device 166 may output sound such as a speaker and headphones.
  • LCD liquid crystal display
  • OLED Organic Light Emitting Diode
  • the storage device 168 is a device for storing data.
  • the storage device 168 may include a storage medium, a recording device that records data on the storage medium, a reading device that reads data from the storage medium, a deletion device that deletes data recorded on the storage medium, and the like.
  • the storage device 168 stores programs executed by the CPU 152 and various data.
  • the drive 170 is a reader / writer for a storage medium, and is built in or externally attached to the communication device 100.
  • the drive 170 reads information recorded on a mounted removable storage medium such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory, and outputs the information to the RAM 156.
  • the drive 170 can also write information to a removable storage medium.
  • connection port 172 is, for example, a bus for connecting to an information processing device or a peripheral device outside the communication device 100.
  • the connection port 172 may be a USB (Universal Serial Bus).
  • the communication control device 174 includes, for example, a communication device for performing communication as a part of the first communication unit 130, the second communication unit 140, the data processing unit 110, and the control unit 120 of the communication device 100. It is a communication interface. Further, the communication control device 174 is a wire communication compatible device that performs wired communication regardless of whether it is a communication device that supports communication other than wireless LAN or BT or BLE, or a communication device that supports LTE (Long Term Evolution). It may be.
  • LTE Long Term Evolution
  • the communication request using the wireless LAN standard communication is accepted by the second communication standard communication instead of the wireless LAN standard communication.
  • the operation period of the wireless LAN standard communication operation is shortened while maintaining the connection.
  • connection processing and authentication processing are not performed each time a communication request is generated, and communication overhead can be reduced while suppressing power consumption in wireless LAN standard communication operations.
  • the existing communication is a wireless LAN standard communication, that is, the sleep trigger of the first communication unit 130, so that the amount of renovation in the existing communication device is reduced, It is possible to reduce the cost for applying the configuration according to the present embodiment to an existing communication device.
  • the communication device 100 includes the data processing unit 110, the control unit 120, the first communication unit 130, and the second communication unit 140.
  • the present technology is not limited to such an example.
  • the respective configurations may be combined as one communication module, and the communication module may be provided in the communication device 100.
  • the said embodiment demonstrated the example in which the 1st communication part 130 and the 2nd communication part 140 were provided independently, the 1st communication part 130 and the 2nd communication part 140 may be provided as one structure. Good. In this case, only one antenna may be provided.
  • reception confirmation notification and the sleep notification are communicated by one PDU.
  • the reception confirmation notification and the sleep notification may be communicated independently.
  • the communication apparatus 100 demonstrated the example which performs a connection check intermittently in a sleep state in the said embodiment, when the communication apparatus 100 operate
  • a first communication unit that performs a communication operation of a wireless local area network (LAN) standard that starts communication by performing connection processing;
  • a second communication unit that performs a communication operation of a second communication standard different from the communication operation of the wireless LAN standard;
  • the communication device wherein the second communication unit performs a communication operation of the second communication standard based on a request for a communication operation by the first communication unit.
  • the second communication unit performs the communication operation of the second communication standard based on the request generated while the communication operation of the wireless LAN standard by the first communication unit is stopped.
  • the communication device according to 1).
  • the communication apparatus includes a communication of an activation request notification for notifying an activation request of the communication operation of the wireless LAN standard.
  • the activation request notification includes information related to data to be transmitted by communication of the wireless LAN standard.
  • an activation completion notification for notifying completion of activation of the wireless LAN standard communication operation which is a response to the activation request notification, is communicated.
  • the first communication unit communicates the activation completion notification using communication based on the wireless LAN standard.
  • the first communication unit sends the activation completion notification using the wireless LAN standard communication when a frame for the request is not received between the transmission of the activation completion notification and the elapse of a predetermined time.
  • the communication device according to (6) which is retransmitted.
  • the second communication unit when the number of retransmissions of the activation completion notification reaches an upper limit, a first communication impossibility notification for notifying that the communication operation of the wireless LAN standard by the first communication unit is difficult
  • the communication device according to (8), wherein the request includes a request for data transmission using the wireless LAN standard communication.
  • the communication device according to (8) or (9), wherein the request includes a request for exchanging authentication information for communication of the wireless LAN standard.
  • the second communication unit performs the communication operation of the second communication standard when the communication operation of the wireless LAN standard by the first communication unit is stopped. Any one of (1) to (10) The communication apparatus according to claim 1.
  • the communication according to the second communication standard related to the suspension of the communication operation according to the wireless LAN standard includes communication of a connection confirmation notification for confirming connection of the communication according to the second communication standard. Communication device.
  • a stop request notification for notifying the stop request of the communication operation of the wireless LAN standard is communicated,
  • the communication device according to (11) or (12), wherein the communication of the second communication standard related to the stop of the communication operation of the wireless LAN standard includes a communication of a stop notification as a response to the stop request notification .
  • the communication of the second communication standard related to the stop of the communication operation of the wireless LAN standard includes communication of a re-stop notification for notifying re-stop of the communication operation of the wireless LAN standard.
  • the communication apparatus according to any one of 13).
  • the communication of the second communication standard related to the suspension of the communication operation of the wireless LAN standard includes the communication of the reception confirmation notification communicated as a response to the frame for the request.
  • the communication apparatus of any one of Claims (16) If the reception confirmation notification is not received between the transmission of the frame for the request and the elapse of a predetermined time, the first communication unit uses the wireless LAN standard communication operation to The communication device according to (15), wherein the frame is retransmitted. (17) The second communication unit notifies the end of the communication operation when receiving the first communication disapproval notification for notifying that the wireless LAN standard communication operation by the first communication unit is difficult. The communication apparatus according to (16), wherein a communication end notification for transmitting is transmitted. (18) The first communication unit performs a communication operation for confirming the connection of the wireless LAN standard communication at a predetermined time interval during the suspension period of the wireless LAN standard communication operation. The communication device according to any one of (17) to (17).
  • the communication device according to any one of (1) to (18), wherein the communication according to the second communication standard includes communication that consumes less power than communication according to the wireless LAN standard.
  • the communication according to the second communication standard includes communication that consumes less power than communication according to the wireless LAN standard.
  • LAN wireless local area network

Abstract

L'invention vise à fournir un dispositif de communication et un procédé de communication qui permettent de réduire le surdébit de communication tout en supprimant la consommation d'énergie, dans une opération de communication standard de LAN sans fil. Un dispositif de communication selon l'invention comprend une première unité de communication qui exécute une opération de communication standard de réseau local (LAN) sans fil pour démarrer une communication en exécutant un processus de connexion, et une seconde unité de communication qui exécute une seconde opération de communication standard différente de l'opération de communication standard de LAN sans fil. La seconde unité de communication exécute la seconde opération de communication standard en réponse à une demande pour une opération de communication transmise par la première unité de communication.
PCT/JP2016/058193 2015-05-27 2016-03-15 Dispositif de communication, et procédé de communication WO2016189933A1 (fr)

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