• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    [Problem to be Solved]To provide a wireless communication device that is able to achieve the two protocols of a connection-oriented protocol and a connectionless protocol without implementing the two protocols.[Solution]There is provided a wireless communication device including: an acquisition section that wirelessly acquires information from a communication partner; and a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner. The communication controller performs control to include, on the basis of the information acquired by the acquisition section, requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    公开号:EP3700290A1
    申请号:EP18867566.4
    申请日:2018-08-31
    公开日:2020-08-26
    发明作者:Fumihiro Nishiyama；Keitarou Kondou
    申请人:Sony Semiconductor Solutions Corp；
    IPC主号:H04W4-00
    专利说明:
    [0001] The present disclosure relates to a wireless communication device, a wireless communication method, and a computer program. Background Art
    [0002] In recent years, a new communication method has undergone development which is to increase the communication speed of wireless communication using high frequency electromagnetic waves referred to as millimeter waves. In addition, a technique that utilizes the communication method using millimeter waves has also been proposed (see PTL 1 or the like). Millimeter waves have a wavelength of 10 mm to 1 mm and a frequency of 30 GHz to 300 GHz, allowing channel allocation in GHz in, for example, but not limited to, the 60 GHz band or the like.
    [0003] Furthermore, wireless communication includes a connection-oriented protocol and a connectionless protocol. Switching between the connection-oriented protocol and the connectionless protocol is described in PTLs 2 to 5, for example. Citation ListPatent Literature
    [0004] PTL 1: Japanese Unexamined Patent Application Publication No. 2015-207799 PTL 2: Japanese Unexamined Patent Application Publication No. 2000-25299 PTL 3: Japanese Unexamined Patent Application Publication No. 2001-237884 PTL 4: Japanese Unexamined Patent Application Publication No. 2002-158736 PTL 5: Japanese Unexamined Patent Application Publication No. 2006-345095 Summary of the InventionProblems to be Solved by the Invention
    [0005] According to the above-described technique, respective independent data transfer protocols are necessary to achieve connection-oriented data transfer and connectionless data transfer. This gives rise to an increase in program and circuit sizes and an increase in power consumption. In addition, this also complicates protocol procedures for data transfer.
    [0006] The present disclosure therefore proposes a novel and improved wireless communication device, a novel and improved wireless communication method, and a novel and improved computer program that are able to achieve the two protocols of a connection-oriented protocol and a connectionless protocol without implementing the two protocols. Means for Solving the Problems
    [0007] According to the present disclosure, there is provided a wireless communication device including: an acquisition section that wirelessly acquires information from a communication partner; and a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner. The communication controller performs control to include, on the basis of the information acquired by the acquisition section, requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    [0008] In addition, according to the present disclosure, there is provided a wireless communication device including: an acquisition section that wirelessly acquires information from a communication partner; and a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner. If a frame acquired by the acquisition section in the connection establishment procedure includes predetermined information, the communication controller determines whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    [0009] In addition, according to the present disclosure, there is provided a wireless communication method including, by a processor, executing wirelessly acquiring information from a communication partner, and performing control to include, on the basis of the information acquired from the communication partner, requested data in a frame to be wirelessly transmitted in a connection establishment procedure when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner.
    [0010] In addition, according to the present disclosure, there is provided a wireless communication method including, by a processor, executing wirelessly acquiring information from a communication partner, and determining, if a frame acquired from the communication partner in a connection establishment procedure includes predetermined information when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner, whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    [0011] In addition, according to the present disclosure, there is provided a computer program for causing a computer to execute: wirelessly acquiring information from a communication partner; and performing control to include, on the basis of the information acquired from the communication partner, requested data in a frame to be wirelessly transmitted in a connection establishment procedure when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner.
    [0012] In addition, according to the present disclosure, there is provided a computer program for causing a computer to execute: wirelessly acquiring information from a communication partner; and determining, if a frame acquired from the communication partner in a connection establishment procedure includes predetermined information when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner, whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure. Effects of the Invention
    [0013] As described above, according to the present disclosure, it is possible to provide a novel and improved wireless communication device, a novel and improved wireless communication method, and a novel and improved computer program that are able to achieve the two protocols of a connection-oriented protocol and a connectionless protocol without implementing the two protocols.
    [0014] It is to be noted that the above-described effects are not necessarily limitative. Any of the effects indicated in this description or other effects that may be understood from this description may be exerted in addition to the above-described effects or in place of the above-described effects. Brief Description of Drawing
    [0015] [FIG. 1] FIG. 1 is an explanatory diagram illustrating an example of a wireless communication system including a wireless communication device according to an embodiment of the present disclosure.[FIG. 2] FIG. 2 is an explanatory diagram illustrating a functional configuration example of a wireless communication device 100 according to the embodiment.[FIG. 3] FIG. 3 is a flowchart illustrating a basic procedure of IEEE 802.15.3e.[FIG. 4] FIG. 4 is a flowchart illustrating an operation example of wireless communication devices 100 and 200 according to the embodiment.[FIG. 5] FIG. 5 is an explanatory diagram illustrating an example of temporal relationship between a beacon frame that is outputted by the wireless communication device 100 (PRC) and an Association Request that is outputted by the wireless communication device 200 (nonPRC).[FIG. 6] FIG. 6 is an explanatory diagram illustrating a portion of a format of a beacon frame and an Association Request frame in a simplified manner.[FIG. 7] FIG. 7 is a flowchart illustrating an operation example of the wireless communication device 100 according to the embodiment.[FIG. 8] FIG. 8 is a flowchart illustrating an operation example of the wireless communication device 200 according to the embodiment.[FIG. 9] FIG. 9 is a flowchart illustrating an operation example of the wireless communication devices 100 and 200 according to the embodiment.[FIG. 10] FIG. 10 is a flowchart illustrating an operation example of the wireless communication devices 100 and 200 according to the embodiment. Modes for Carrying Out the Invention
    [0016] The following describes a preferred embodiment of the present disclosure in detail with reference to the accompanying drawings. It is to be noted that, in this description and the accompanying drawings, components that have substantially the same functional configuration are indicated by the same reference signs, and thus redundant description thereof is omitted.
    [0017] It is to be noted that the description is given in the following order. 1. Embodiment of the Present Disclosure 1.1. Overview 1.2. Configuration Example 1.3. Operation Example 2. Conclusion <1. Embodiment of the Present Disclosure>[1.1. Overview]
    [0018] First, an overview of an embodiment of the present disclosure is described before the embodiment of the present disclosure is described in detail.
    [0019] In recent years, a new communication method has undergone development which is to increase the communication speed of wireless communication using high frequency electromagnetic waves referred to as millimeter waves. In addition, a technique that utilizes the communication method (millimeter wave communication) using millimeter waves has also been proposed. Millimeter waves have a wavelength of 10 mm to 1 mm and a frequency of 30 GHz to 300 GHz, allowing channel allocation in GHz in, for example, but not limited to, the 60 GHz band or the like.
    [0020] In general, millimeter waves characteristically have a high tendency to travel in straight lines and attenuate much when reflected as compared to microwaves. A pathway of wireless communication according to the millimeter wave communication is therefore mainly formed with direct waves or waves reflected approximately once. In addition, millimeter waves also characteristically have a greater free space propagation loss (a shorter electric wave arrival distance). Wireless communication using millimeter waves therefore provides a shorter communication distance, while advantageously allowing easy space division as compared to wireless communication using microwaves.
    [0021] To compensate for such a weakness of millimeter waves and make use of high-speed wireless communication with millimeter waves in a greater variety of situations, a general wireless system gives directionalities to antennas of transmitting and receiving devices and directs each of transmit beams and receive beams toward a position of a communication partner to increase the communication distance (beamforming). However, in a case where one or both of transmitting and receiving terminals are moving objects, it is necessary to increase the speed of pursuit in beamforming and expand the directional range in beamforming. Furthermore, the terminals consume a large amount of power to execute algorithms for determining the directionalities.
    [0022] There has been a movement to apply millimeter wave communication to short-range communication by taking advantage of the characteristic of a shorter communication distance among the above-described characteristics. For example, the standards IEEE 802.15.3e and IEEE 802.11ay have been discussed for main use in content download at station stands and during passage through gates such as automatic ticket gates in a station and ETC (Electronic Toll Collection System) gates, and high-speed file transfer between wireless terminals.
    [0023] Furthermore, wireless communication includes a connection-oriented protocol and a connectionless protocol. A large number of literatures are also disclosed that describe switching between the connection-oriented protocol and the connectionless protocol.
    [0024] However, respective independent data transfer protocols are necessary to achieve connection-oriented data transfer and connectionless data transfer. This gives rise to an increase in program and circuit sizes and an increase in power consumption. In addition, this also complicates protocol procedures for data transfer. Speedy communication is necessary especially at the time of passage through automatic ticket gates as described above in a station. Accordingly, connection-oriented data transfer is quite inefficient.
    [0025] In view of the above-described points, therefore, the discloser of the present application has intensively studied a technique that enables the two protocols of a connection-oriented protocol and a connectionless protocol to be achieved without implementing the two protocols. As a result, the discloser of the present application has devised a technique that enables the two protocols of a connection-oriented protocol and a connectionless protocol to be achieved with one protocol as described below.
    [0026] The above describes the overview of the embodiment of the present disclosure. The following describes the embodiment of the present disclosure in detail. [1.2. Configuration Example]
    [0027] FIG. 1 is an explanatory diagram illustrating an example of a wireless communication system including a wireless communication device according to the embodiment of the present disclosure. The following describes the wireless communication system including the wireless communication devices according to the embodiment of the present disclosure with the use of FIG. 1.
    [0028] The wireless communication system illustrated in FIG. 1 is a system that transmits and receives data using, in particular, electric waves in the millimeter wave band. A wireless communication system 1 illustrated in FIG. 1 includes wireless communication devices 100 and 200. The wireless communication device 100 in the wireless communication system illustrated in FIG. 1 is, for example, a device provided in an automatic ticket gate (or in the vicinity of an automatic ticket gate) in a station. Furthermore, the wireless communication device 200 is a device such as a mobile phone, a smartphone, or a wearable computer carried by a user who passes through an automatic ticket gate or the like in a station, for example.
    [0029] The wireless communication devices 100 and 200 transmit and receive data to and from each other through wireless communication using a predetermined frequency band. The wireless communication herein, for example, means wireless communication using the millimeter wave band. Furthermore, in the following description, the wireless communication device 100 may also be referred to as "PRC", and the wireless communication device 200 may also be referred to as "nonPRC".
    [0030] The following describes a functional configuration example of the wireless communication devices 100 and 200 according to the embodiment of the present disclosure. Here, the functional configuration example of the wireless communication device 100 is described.
    [0031] FIG. 2 is an explanatory diagram illustrating a functional configuration example of the wireless communication device 100 according to the embodiment of the present disclosure. The following uses FIG. 2 to describe a functional configuration example of the wireless communication device 100 according to the embodiment of the present disclosure.
    [0032] As illustrated in FIG. 2, the wireless communication device 100 according to the embodiment of the present disclosure includes an antenna 110, a controller 120, a frame generator 132, a transmission modulation/coding section 134, a reception demodulation/decoding section 136, an unframing section 138, a switching section 140, and a transmission and reception controller 150.
    [0033] The antenna 110 sends an RF signal (a Radio Frequency signal) superimposed on a carrier having a predetermined frequency as a transmit signal from the wireless communication device 100. In addition, the antenna 110 receives the transmit signal superimposed on the carrier having the above-described predetermined frequency from the wireless communication device 200.
    [0034] The controller 120 controls operation of each of the sections of the wireless communication device 100. The controller 120 includes CPU (Central Processing Unit) 122 and a storage unit 124. The CPU 122 controls operation of each of the sections of the wireless communication device 100 on the basis of computer programs and data stored in the storage unit 124. The storage unit 124, for example, includes a storage device such as ROM (Read Only Memory) and RAM (Random Access Memory), and stores the computer programs to be read and executed in sequence by the CPU 122 and various types of data to be referred to by the CPU 122.
    [0035] According to the present embodiment, the controller 120 performs a process of executing connectionless data transfer using a portion of a connection-oriented protocol as described below. The use of a portion of the connection-oriented protocol enables the controller 120 to achieve the two protocols of a connection-oriented protocol and a connectionless protocol without implementing the two protocols of the connection-oriented protocol and the connectionless protocol. The controller 120 then executes connectionless data transfer using a portion of the connection-oriented protocol on the basis of data transmitted from the unframing section 138.
    [0036] The frame generator 132 generates a frame to be transmitted as a transmit signal from the wireless communication device 100 on the basis of a predetermined frame format.
    [0037] The transmission modulation/coding section 134 modulates the frame generated by the frame generator 132 on the basis of a predetermined modulation scheme and encodes the frame on the basis of a predetermined encoding scheme. Examples of modulation schemes include 256 QAM (Quadrature Amplitude Modulation), 64 QAM, 16 QAM, QPSK (Quadrature Phase Shift Keying) modulation, BPSK (Binary Phase Shift Keying) modulation, and the like.
    [0038] The reception demodulation/decoding section 136 executes a demodulation process on a signal received by the antenna 110 on the basis of a scheme corresponding to the above-described modulation scheme adopted in the transmission modulation/coding section 134 and further performs a decoding process on the signal.
    [0039] The unframing section 138 executes a process of unframing the signal demodulated and decoded by the reception demodulation/decoding section 136 on the basis of a predetermined frame format. The reception demodulation/decoding section 136 and the unframing section 138 may, for example, function as an example of an acquisition section of the present disclosure.
    [0040] The switching section 140 switches signal transmission and reception. The switching section 140 switching signal transmission and reception makes it possible to prevent signals from the transmission modulation/coding section 134 from flowing into the reception demodulation/decoding section 136 and prevent signals received by the antenna 110 from flowing into the transmission modulation/coding section 134.
    [0041] The transmission and reception controller 150 controls operation of the transmission modulation/coding section 134 and the reception demodulation/decoding section 136 on the basis of control by the controller 120.
    [0042] FIG. 2 has been used above to describe a functional configuration example of the wireless communication device 100 according to the embodiment of the present disclosure. The following describes operation examples of the wireless communication device 100 and the wireless communication device 200 according to the embodiment of the present disclosure. [1.3. Operation Example]
    [0043] Basic procedures of IEEE 802.15.3e are described before the operation examples of the wireless communication device 100 and the wireless communication device 200 according to the embodiment of the present disclosure are described.
    [0044] FIG. 3 is a flowchart illustrating the basic procedures of IEEE 802.15.3e, illustrating a flow of operation of the wireless communication device 100 and the wireless communication device 200 according to the basic procedures.
    [0045] The wireless communication device 100 outputs beacons at predetermined intervals (step S11). In a case where the wireless communication device 200 enters a range where the beacons outputted by the wireless communication device 100 are receivable and the wireless communication device 200 starts communication with the wireless communication device 100, the wireless communication device 200 transmits an Association Request to the wireless communication device 100 (step S12). Upon receiving the Association Request, the wireless communication device 100 transmits an Association Response to the wireless communication device 200 (step S13). Upon successfully receiving the Association Response, the wireless communication device 200 transmits ACK to the wireless communication device 100 (step S14). Steps S11 to S14 are a connection establishment procedure.
    [0046] Upon receiving the ACK from the wireless communication device 200, the wireless communication device 100 transmits data to the wireless communication device 200 (step SI5). Upon receiving the data from the wireless communication device 100, the wireless communication device 200 transmits, to the wireless communication device 100, ACK indicating the successful reception (step S16). In addition, the wireless communication device 200 transmits data to the wireless communication device 100 as necessary when transmitting the ACK. Upon receiving the ACK and the data from the wireless communication device 200, the wireless communication device 100 transmits, to the wireless communication device 200, ACK indicating the successful reception (step S17). In addition, the wireless communication device 100 transmits data to the wireless communication device 200 as necessary when transmitting the ACK.
    [0047] Upon determining that transmission and reception of data are completed, the wireless communication device 200 transmits a Disassociation Request to the wireless communication device 100 (step S18). Upon receiving the Disassociation Request, the wireless communication device 100 completes wireless communication with the wireless communication device 200. These steps S15 to S17 are a data exchange procedure.
    [0048] As described above, the basic procedures of IEEE 802.15.3e include the connection establishment procedure and the data exchange procedure, which are executed in the stated order. However, even transmission of a very little information of, for example, several bytes takes time to complete communication by going through such procedures. There is a strong demand to shorten as much time as possible to complete communication especially in a case where it is necessary to complete communication within a very short period of time such as passing through an automatic ticket gate or an ETC gate.
    [0049] The present embodiment is therefore characterized in that even data transmission is completed in the connection establishment procedure. Completing even data transmission in the connection establishment procedure allows for a great reduction in time to complete communication.
    [0050] FIG. 4 is a flowchart illustrating an operation example of the wireless communication devices 100 and 200 according to the embodiment of the present disclosure.
    [0051] The wireless communication device 100 outputs beacons at predetermined intervals (step S101). According to the present embodiment, data is stored in a beacon frame transmitted by this wireless communication device 100. Specifically, the wireless communication device 100 stores data in a reserved field or an Information Element in the beacon frame. Here, the wireless communication device 100 assigns data to the reserved field or the Information Element in the beacon frame. The data is used to issue a notification indicating that only the steps up to the Association Request step are performed, and a response thereto is made in an Association Response frame.
    [0052] In a case where the wireless communication device 200 enters a range where the beacons outputted by the wireless communication device 100 are receivable and the wireless communication device 200 starts communication with the wireless communication device 100, the wireless communication device 200 transmits an Association Request to the wireless communication device 100 (step S102). According to the present embodiment, data is stored in an Association Request frame when this frame is transmitted.
    [0053] FIG. 5 is an explanatory diagram illustrating an example of temporal relationship between a beacon frame that is outputted by the wireless communication device 100 (PRC) and an Association Request that is outputted by the wireless communication device 200 (nonPRC). The wireless communication device 100 outputs beacon frames 301 in predetermined periods. There are N+1 slots 302-0 to 302-N between the beacon frames 301. The wireless communication device 200 outputs an Association Request 311 using one of the slots. The wireless communication device 100 outputs an Association Response 312 after the (N+1)-th slot 302-N. ACK 313 is outputted a certain time (SIFS: Short Inter Frame Space) after the Association Response 312.
    [0054] FIG. 6 is an explanatory diagram illustrating a portion of a format of a beacon frame and an Association Request frame in a simplified manner. A frame 400 illustrated in FIG. 6 has a header region 401 and a frame body region 402. The frame body region 402 has N+1 Information Elements 411-0 to 411-N.
    [0055] The wireless communication device 100 stores data in any of the predetermined Information Elements 411-0 to 411-N of the frame body region 402 in the beacon frame, and transmits the data. The wireless communication device 200 then stores data in any of the predetermined Information Elements 411-0 to 411-N of the frame body region 402 in the Association Request frame, and transmits the data.
    [0056] FIG. 7 is a flowchart illustrating an operation example of the wireless communication device 100 according to the embodiment of the present disclosure, illustrating an operation example of a case where the wireless communication device 100 transmits data to the wireless communication device 200.
    [0057] The wireless communication device 100 determines whether or not a connectionless data transfer request is received from an upper layer, for example (step S111). The controller 120, for example, the CPU 122 makes this determination. If a connectionless data transfer request is not received (No at step S111), the wireless communication device 100 executes connection-oriented data transfer (step S112).
    [0058] In contrast, if a connectionless data transfer request is received (Yes at step S111), the wireless communication device 100 determines whether or not data to be transmitted is connectionless data and arrival of the data is guaranteed (step S113). The controller 120, for example, the CPU 122 makes this determination.
    [0059] If the data to be transmitted is connectionless data and arrival of the data is guaranteed (Yes at step S113), the wireless communication device 100 adds, to a beacon, information indicating that the data to be transmitted is connectionless data and arrival of the data is guaranteed, and transmits the beacon (step S114). The wireless communication device 100 then stands by until data transmitted using an Association Request is received from the nonPRC, which in other words is the wireless communication device 200 (step S115). Upon receiving the data transmitted using the Association Request from the wireless communication device 200 (Yes at step S115), the wireless communication device 100 acquires the data included in the Association Request frame (step S116).
    [0060] Thereafter, the wireless communication device 100 determines whether or not to continue data transfer to the wireless communication device 200 (step S 117). The controller 120, for example, the CPU 122 makes this determination. This determination is, for example, a determination as to whether or not it is necessary to transfer a large volume of data to the wireless communication device 200. If it is determined that data transfer to the wireless communication device 200 is continued (Yes at step S117), the wireless communication device 100 completes the connectionless data transfer, further adds, to an Association Response, information indicating that data transfer is continued, and transmits the Association Response to the wireless communication device 200 (step S118). Thereafter, the wireless communication device 100 executes data transfer (step S 119) through the data exchange procedure illustrated in FIG. 3 until the data transfer is completed (step S120). Once the data transfer is completed (Yes at step S120), the wireless communication device 100 returns to the process of step S 114 described above.
    [0061] In contrast, if it is determined that data transfer to the wireless communication device 200 is not continued (No at step S 117), the wireless communication device 100 completes the connectionless data transfer, further adds, to an Association Response, information indicating that data transfer is not continued, and transmits the Association Response to the wireless communication device 200 (step S121). Once transmission of the Association Response is then completed, the wireless communication device 100 returns to the process of step S 114 described above.
    [0062] If the data to be transmitted is connectionless data and arrival of the data is not guaranteed in the determination of step S113 described above (No at step S113), the wireless communication device 100 adds, to a beacon, information indicating that the data to be transmitted is connectionless data and arrival of the data is not guaranteed, and transmits the beacon (step S 122). The wireless communication device 100 then stands by until data transmitted using an Association Request is received from the nonPRC, which in other words is the wireless communication device 200 (step S123). Upon receiving the data transmitted using the Association Request from the wireless communication device 200 (Yes at step S115), the wireless communication device 100 acquires the data included in the Association Request frame (step S124). Then, upon acquiring the data from the wireless communication device 200, the wireless communication device 100 returns to the process of step S122 described above.
    [0063] The following describes an operation example of the wireless communication device 200.
    [0064] FIG. 8 is a flowchart illustrating an operation example of the wireless communication device 200 according to the embodiment of the present disclosure, illustrating an operation example of a case where the wireless communication device 200 transmits data to the wireless communication device 100.
    [0065] The wireless communication device 200 determines whether or not a beacon including a connectionless data transfer request is received from the wireless communication device 100 (step S131). In a case where a beacon including no connectionless data transfer request is received from the wireless communication device 100 (No at step S131), the wireless communication device 200 transmits an Association Request to the wireless communication device 100. Then, upon receiving an Association Response from the wireless communication device 100, the wireless communication device 200 receives data transferred through the data exchange procedure illustrated in FIG. 3, and finishes the series of communication processes once the data transfer is completed (step S132).
    [0066] In contrast, in a case where a beacon including a connectionless data transfer request is received from the wireless communication device 100 (Yes at step S131), the wireless communication device 200 further determines whether or not arrival of the data at the wireless communication device 200 is guaranteed (step S133). The wireless communication device 200 determines whether or not arrival of the data at the wireless communication device 200 is guaranteed, on the basis of information included in the beacon.
    [0067] If arrival of the data from the wireless communication device 100 at the wireless communication device 200 is guaranteed (Yes at step S133), the wireless communication device 200 adds the data to an Association Request and transmits the Association Request (step S134). The wireless communication device 200 then determines whether or not an Association Response is received from the PRC, which in other words is the wireless communication device 100 (step S135). If an Association Response is received from the wireless communication device 100 (Yes at step S135), it is further determined whether or not to continue to receive data from the wireless communication device 100 (step S136). In a case where the wireless communication device 200 continues to receive data (Yes at step S136), the wireless communication device 200 receives data transferred from the wireless communication device 100 through the data exchange procedure illustrated in FIG. 3 (step S137). Once the data transfer is completed (Yes at step 138), the wireless communication device 200 finishes the communication process.
    [0068] It is to be noted that the wireless communication device 200 returns to the beacon reception process of step S131 described above if no Association Response is received from the wireless communication device 100 in step S135 described above (No at step S135).
    [0069] As described above, the wireless communication devices 100 and 200 are able to achieve connectionless data transfer by executing part of the connection procedure of IEEE 802.15.3e (i.e., without executing the connection procedure through to the end). It is therefore unnecessary for the wireless communication devices 100 and 200 to implement the two data transfer protocols of a connection-oriented data transfer protocol and a connectionless data transfer protocol. Furthermore, the wireless communication device 200 transmits an Association Request frame in a case where beacons periodically transmitted from the wireless communication device 100 are received. This produces an effect of data retransmission, allowing highly reliable data transfer even in the case of connectionless data transfer.
    [0070] An IEEE 802.15.3e pairnt mode offers a random access slot prepared to avoid a collision between Association Requests in a case where a plurality of nonPRCs returns Association Requests in response to a transmitted beacon in the connection procedure. According to the embodiment of the present disclosure, appropriately setting this random access slot allows responses to a beacon transmitted once to be obtained from a plurality of terminals.
    [0071] FIG. 9 is an explanatory diagram illustrating an operation example of the wireless communication devices 100 and 200 according to the embodiment of the present disclosure. FIG. 9 is an explanatory diagram illustrating an example of a case where a plurality of wireless communication devices 200 returns Association Requests. The wireless communication device 100 transmits a beacon (step S151). Upon receiving the beacon, the two wireless communication devices 200 return Association Requests, respectively (steps S152 and S153).
    [0072] The wireless communication device 100 according to the embodiment of the present disclosure is able to efficiently obtain data responses from a plurality of terminals by appropriately setting a random access slot, making it possible to achieve high-speed processing and power saving in the wireless communication devices 100 and 200.
    [0073] In the above-described example, data transfer is achieved through the procedures up to transmission of an Association Request. However, performing up to the transmission of an Association Response in the connection procedure makes it possible to guarantee arrival of an Association Request frame, making it possible to achieve simple connection-oriented data transfer.
    [0074] FIG. 10 is an explanatory diagram illustrating an operation example of the wireless communication devices 100 and 200 according to the embodiment of the present disclosure. In the operation example, the wireless communication device 100 transmits an Association Response to the wireless communication device 200 when the wireless communication device 200 returns an Association Request.
    [0075] The wireless communication device 100 transmits a beacon (step S161). Upon receiving the beacon, the wireless communication device 200 returns an Association Requests (step S162). The wireless communication device 100 returns an Association Response to the wireless communication device 200 (step S163). Performing up to transmission of this Association Response allows the wireless communication device 100 to guarantee arrival of an Association Request frame.
    [0076] When performing up to transmission of an Association Response in the connection procedure, the wireless communication device 100 may include, in a beacon, information (e.g., a flag or the like) indicating that the up to transmission of an Association Response is performed.
    [0077] It is to be noted that the communication method according to the present embodiment is applicable to a system (e.g., ISO/IEC 17568) adopting a connection procedure similar to that of the IEEE 802.15.3e pairnet mode. <2. Conclusion>
    [0078] According to the embodiment of the present disclosure, as described above, it is possible to provide the wireless communication devices 100 and 200 that are able to achieve the two protocols of a connection-oriented protocol and a connectionless protocol with one protocol.
    [0079] The respective steps in the processing executed by each device described herein do not necessarily have to be processed chronologically in the order described as a sequence diagram or a flowchart. For example, the respective steps in the processes executed by each device may be processed in order different from the order described as a flowchart, or may be processed in parallel.
    [0080] In addition, it is also possible to fabricate a computer program for causing hardware such as the CPU, ROM, and RAM built in each device to attain the same functions as those of the components of each device described above. In addition, it is possible to provide a storage medium having the computer program stored therein. In addition, configuring each of the functional blocks illustrated in the functional block diagrams by hardware makes it possible to allow the hardware to achieve the series of processes.
    [0081] A preferred embodiment(s) of the present disclosure has/have been described above in detail with reference to the accompanying drawings, but the technical scope of the present disclosure is not limited to such an embodiment(s). It is apparent that a person having ordinary skill in the art of the present disclosure may arrive at various alterations and modifications within the scope of the technical idea described in the appended claims, and it is understood that such alterations and modifications naturally fall within the technical scope of the present disclosure.
    [0082] Furthermore, the effects described herein are merely illustrative and exemplary, and not limitative. That is, the technology according to the present disclosure may exert other effects that are apparent to those skilled in the art from the description herein, in addition to the above-described effects or in place of the above-described effects.
    [0083] It is to be noted that the following configurations also fall within the technical scope of the present disclosure.(1) A wireless communication device including: an acquisition section that wirelessly acquires information from a communication partner; and a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner, in which the communication controller performs control to include, on the basis of the information acquired by the acquisition section, requested data in a frame to be wirelessly transmitted in the connection establishment procedure. (2) The wireless communication device according to (1), in which the communication controller performs control to include information indicating that data transmission is completed through only the connection establishment procedure. (3) The wireless communication device according to (1), in which, in the connection establishment procedure, the communication controller performs control to further include information indicating that there is data to be transmitted through the data exchange procedure. (4) The wireless communication device according to any of (1) to (3), in which the communication controller performs control to include, in the frame to be wirelessly transmitted in the connection establishment procedure, information indicating that data to be transmitted in the connection establishment procedure is data whose arrival is guaranteed. (5) The wireless communication device according to any of (1) to (4), in which the acquisition section acquires information through wireless communication using an electric wave in a millimeter wave band. (6) A wireless communication device including: an acquisition section that wirelessly acquires information from a communication partner; and a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner, in which if a frame acquired by the acquisition section in the connection establishment procedure includes predetermined information, the communication controller determines whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure. (7) The wireless communication device according to (6), in which, if the information acquired by the acquisition section includes information indicating that data transmission is completed through only the connection establishment procedure, the communication controller performs control to complete wireless communication with the communication partner through only the connection establishment procedure. (8) The wireless communication device according to (6), in which, if the information acquired by the acquisition section further includes information indicating that there is data to be transmitted through the data exchange procedure, the communication controller performs control to execute the data exchange procedure subsequently to the connection establishment procedure. (9) The wireless communication device according to any of (6) to (8), in which, if the information acquired by the acquisition section includes information indicating that data to be transmitted in the connection establishment procedure is data whose arrival is guaranteed, the communication controller performs control to receive, from the communication partner, a response to transmission of the requested data in the connection establishment procedure. (10) The wireless communication device according to any of (6) to (9), in which the acquisition section acquires information through wireless communication using an electric wave in a millimeter wave band. (11) A wireless communication method including, by a processor,executing wirelessly acquiring information from a communication partner, and performing control to include, on the basis of the information acquired from the communication partner, requested data in a frame to be wirelessly transmitted in a connection establishment procedure when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner. (12) A wireless communication method including, by a processor,executing wirelessly acquiring information from a communication partner, and determining, if a frame acquired from the communication partner in a connection establishment procedure includes predetermined information when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner, whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure. (13) A computer program for causing a computer to execute: wirelessly acquiring information from a communication partner; and performing control to include, on the basis of the information acquired from the communication partner, requested data in a frame to be wirelessly transmitted in a connection establishment procedure when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner. (14) A computer program for causing a computer to execute: wirelessly acquiring information from a communication partner; and determining, if a frame acquired from the communication partner in a connection establishment procedure includes predetermined information when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner, whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure. Reference Signs List
    [0084] 100, 200 Wireless communication device
    权利要求:
    Claims (14)
    [0001] A wireless communication device comprising:
    an acquisition section that wirelessly acquires information from a communication partner; and
    a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner, wherein
    the communication controller performs control to include, on a basis of the information acquired by the acquisition section, requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    [0002] The wireless communication device according to claim 1, wherein the communication controller performs control to include information indicating that data transmission is completed through only the connection establishment procedure.
    [0003] The wireless communication device according to claim 1, wherein, in the connection establishment procedure, the communication controller performs control to further include information indicating that there is data to be transmitted through the data exchange procedure.
    [0004] The wireless communication device according to claim 1, wherein the communication controller performs control to include, in the frame to be wirelessly transmitted in the connection establishment procedure, information indicating that data to be transmitted in the connection establishment procedure is data whose arrival is guaranteed.
    [0005] The wireless communication device according to claim 1, wherein the acquisition section acquires information through wireless communication using an electric wave in a millimeter wave band.
    [0006] A wireless communication device comprising:
    an acquisition section that wirelessly acquires information from a communication partner; and
    a communication controller that performs control to execute a data exchange procedure subsequently to a connection establishment procedure, and execute wireless data exchange with the communication partner, wherein
    if a frame acquired by the acquisition section in the connection establishment procedure includes predetermined information, the communication controller determines whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    [0007] The wireless communication device according to claim 6, wherein, if the information acquired by the acquisition section includes information indicating that data transmission is completed through only the connection establishment procedure, the communication controller performs control to complete wireless communication with the communication partner through only the connection establishment procedure.
    [0008] The wireless communication device according to claim 6, wherein, if the information acquired by the acquisition section further includes information indicating that there is data to be transmitted through the data exchange procedure, the communication controller performs control to execute the data exchange procedure subsequently to the connection establishment procedure.
    [0009] The wireless communication device according to claim 6, wherein, if the information acquired by the acquisition section includes information indicating that data to be transmitted in the connection establishment procedure is data whose arrival is guaranteed, the communication controller performs control to receive, from the communication partner, a response to transmission of the requested data in the connection establishment procedure.
    [0010] The wireless communication device according to claim 1, wherein the acquisition section acquires information through wireless communication using an electric wave in a millimeter wave band.
    [0011] A wireless communication method comprising, by a processor,executing
    wirelessly acquiring information from a communication partner, and
    performing control to include, on a basis of the information acquired from the communication partner, requested data in a frame to be wirelessly transmitted in a connection establishment procedure when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner.
    [0012] A wireless communication method comprising, by a processor,executing
    wirelessly acquiring information from a communication partner, and
    determining, if a frame acquired from the communication partner in a connection establishment procedure includes predetermined information when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner, whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
    [0013] A computer program for causing a computer to execute:
    wirelessly acquiring information from a communication partner; and
    performing control to include, on a basis of the information acquired from the communication partner, requested data in a frame to be wirelessly transmitted in a connection establishment procedure when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner.
    [0014] A computer program for causing a computer to execute:
    wirelessly acquiring information from a communication partner; and
    determining, if a frame acquired from the communication partner in a connection establishment procedure includes predetermined information when performing control to execute a data exchange procedure subsequently to the connection establishment procedure, and execute wireless data exchange with the communication partner, whether or not to include requested data in a frame to be wirelessly transmitted in the connection establishment procedure.
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    同族专利:
    公开号 | 公开日
    EP3700290A4|2020-12-09|
    JPWO2019077894A1|2020-11-05|
    WO2019077894A1|2019-04-25|
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