WO2021033555A1 - 無線通信装置および方法、並びにプログラム - Google Patents
無線通信装置および方法、並びにプログラム Download PDFInfo
- Publication number
- WO2021033555A1 WO2021033555A1 PCT/JP2020/030117 JP2020030117W WO2021033555A1 WO 2021033555 A1 WO2021033555 A1 WO 2021033555A1 JP 2020030117 W JP2020030117 W JP 2020030117W WO 2021033555 A1 WO2021033555 A1 WO 2021033555A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- information
- wireless communication
- band
- channel
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0069—Allocation based on distance or geographical location
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
-
- 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]
Definitions
- the present technology relates to wireless communication devices, methods, and programs, and particularly to wireless communication devices, methods, and programs that enable more efficient communication.
- a technique has been disclosed in which a conventional 20 MHz bandwidth is used as one frequency channel, and two channels of 40 MHz, four channels of 80 MHz, or eight channels of 160 MHz are continuously used. ..
- new frequency bands may be available for wireless LAN systems, but only some frequency bands may be available. is there.
- the existing system exists as the primary business, so it is necessary to use the wireless LAN system according to the area and time zone that are not operated in the primary business.
- the wireless communication device accesses the database of the server that manages the frequency resources, confirms the position and current time information of the wireless communication device, and confirms that the frequency band is available for that position and time. If it can be done, the method of actually operating it is envisioned.
- a frequency band not used for communication by another device is detected, and a transmission signal in which the frequency components of the signal to be transmitted are divided and arranged is generated and transmitted.
- Techniques have also been proposed (see, for example, Patent Document 1).
- the signal is transmitted by being divided into frequency components whose use is not detected at the timing when the signal is to be transmitted. Therefore, if there is no signal detection from the primary business system temporarily, a case may occur in which the signal is transmitted at that timing.
- the frequency channel band to be used is specified according to the generation of the wireless LAN system, for example, the use in the 2.4 GHz band and the use in the 5 GHz band have the above-mentioned configurations, respectively.
- This technology was made in view of such a situation, and enables more efficient communication.
- the wireless communication device of one aspect of the present technology has a first transmitter that transmits a signal using a freely available frequency channel of an unconstrained frequency band and a frequency channel of a restricted frequency band that is restricted in use.
- the second transmission unit that transmits signals by using it in combination with the frequency channel of the unconstrained frequency band and the frequency channel of the constrained frequency band, wireless communication can be performed within a predetermined operating bandwidth.
- a control unit that controls the operation of the first transmission unit and the second transmission unit is provided.
- the wireless communication method or program of one aspect of the present technology includes a first transmitter that transmits a signal using a freely available frequency channel of an unconstrained frequency band and a frequency of a restricted frequency band that is restricted in use.
- a wireless communication method or program of a wireless communication device including a second transmission unit that transmits a signal using a channel, wherein the frequency channel of the non-constrained frequency band and the frequency channel of the constrained frequency band are used in combination. This includes a step of controlling the operation of the first transmitting unit and the second transmitting unit so that wireless communication is performed within a predetermined operating bandwidth.
- a first transmitter that transmits a signal using a freely available frequency channel in an unconstrained frequency band and a frequency channel in a restricted frequency band that is restricted in use are used.
- a wireless communication device including a second transmission unit for transmitting a signal
- wireless communication can be performed within a predetermined operating bandwidth by using the frequency channel of the unconstrained frequency band and the frequency channel of the constrained frequency band in combination. The operation of the first transmission unit and the second transmission unit is controlled so as to be performed.
- the first frequency channel that can be freely used without restriction and the second frequency that is restricted by the position and time of the device.
- arbitrary frequency channels are bundled and communication is performed so as to have a desired bandwidth such as 320 MHz.
- the availability of the second frequency channel which is restricted by the position and time of the wireless communication device, is grasped in advance by accessing a predetermined server, and the available frequency and time are set to the surrounding access points. You will be notified. As a result, the second frequency channel can be used without the existing access point accessing the server.
- a desired bandwidth is secured by operating the unit in any combination.
- an arbitrary frequency channel of the first frequency band that can be freely used and a second frequency that is constrained by position and time.
- a desired bandwidth such as 320 MHz can be secured by bundling an arbitrary frequency channel of the band.
- the first frequency band is an existing frequency band
- the second frequency band is a newly available frequency band or the like.
- a first communication unit that operates in a frequency band that can be freely used by a wireless communication device and a second communication unit that operates in a frequency band that is used by inquiring the availability to the outside are provided, and a plurality of frequency channels are provided.
- the frequency band is divided into an asymmetric bandwidth of 240 MHz and 80 MHz so as to obtain a desired bandwidth of 320 MHz, for example, and the frequency band is used.
- communication is performed using a plurality of frequency bands having different bandwidths from each other.
- the frequency band that can be newly used by the communication terminal is described in a predetermined information element by describing the information indicating the desired bandwidth (320 MHz) or the like used by the access point according to the judgment of the access point. It is possible to realize a communication method that coexists with the primary business system without acquiring the frequency channel information of.
- any communication terminal that starts an application that requires higher-speed communication can access the database server to determine whether or not to use the second frequency band, which is restricted by the position and time of the device, and the available frequencies.
- the information may be acquired and the information on the available frequencies may be notified to the existing access point.
- the surrounding access points that have been notified of the available frequency information can also operate by combining the frequency channels that are actually used from the available frequency band based on this information. Become.
- frequency channel information of a desired bandwidth used in the own wireless LAN system may be described in a predetermined information element and notified to the communication terminal by an access point beacon signal or the like.
- the communication terminal can realize a communication method that coexists with the system of the primary business without acquiring the frequency channel information of the newly available frequency band.
- divided frequency bands used for communication are not limited to two, and any frequency channel may be used.
- FIG. 1 is a diagram showing a network configuration example of a communication system using the present technology.
- wireless communication between the user's communication terminal 11 which is a station and the access point 12 is carried out by the ultra-high-speed wireless LAN system.
- the communication terminal 11 or the access point 12 is required to perform communication in the newly available frequency band while coexisting with the existing system 13 which is the primary business system. To collect.
- the communication terminal 11 and the access point 12 access the database server 14 and acquire the available frequency time information.
- the available frequency time information is information indicating whether or not the newly available frequency band can be used at the position of each device such as the communication terminal 11 or the access point 12.
- the available frequency time information includes information indicating the available frequency (frequency channel) of the newly available frequency band and the available time zone.
- the communication terminal 11 and the access point 12 transmit the geolocation information indicating their current position to the database server 14, and the available frequency time information transmitted from the database server 14 as a response to the transmission. To receive.
- the communication between the communication terminal 11 or the access point 12 and the database server 14 may be performed using a communication network such as the Internet, or may be performed using a wireless LAN. Further, the access to the database server 14 of the communication terminal 11 and the access point 12 may be performed according to a user's instruction or the like.
- a wireless communication method using available frequency time information is generally known as a cognitive radio system.
- the existing system is regarded as the primary business, and the primary business can preferentially use the frequency band, if the time zone or geographical range (location) is not used in the primary business. , It is configured to allow other systems to use the frequency band.
- the access point 12 and the communication terminal 11 of the wireless LAN system existing as the secondary business access the database server 14 to determine whether or not the frequency band can be used based on the geographical position information indicating the current position of the wireless LAN system. It is configured.
- the communication terminal 11 and the access point 12 can be used by acquiring the geolocation information by receiving, for example, a signal from the positioning satellite 15, and transmitting the geolocation information to the database server 14. Acquire frequency and time information.
- the wireless LAN system sets the frequency channel required for communication from the available frequency band of the wireless LAN system based on the available frequency time information.
- the frequency channel is used as needed.
- FIG. 2 shows the frequency band and frequency channel allocation status that can be used by the wireless LAN system.
- the protruding part in the figure represents one frequency channel with a bandwidth of 20 MHz, and the horizontal direction in the figure indicates the frequency.
- each frequency channel part the letters written on the lower side indicate the channel number of the frequency channel, and in the following, the frequency channel whose channel number is n (where n is an integer) is also referred to as channel n. I will do it.
- channel 32, channel 68, channel 96, and channel 144 can be used, and in the frequency band above that, channels 149 to 173 can be used.
- the usage method in the 6GHz band which is currently being standardized so that it can be used, 25 channels in the UNII-5 band of 6GHz band A and 5 channels in the UNII-6 band of 6GHz band B. , It is possible to arrange 17 channels in the UNII-7 band of 6GHz band C and 12 channels in the UNII-8 band of 6GHz band D.
- the horizontal direction indicates the frequency.
- FIXED fixed operation communication
- FSS Earth-to-space
- MOBILE mobile communication
- Ultra Wideband communication Part 15 Ultra Wideband
- these primary operations are performed in each of the 6GHz band A UNII-5 band, 6GHz band B UNII-6 band, 6GHz band C UNII-7 band, and 6GHz band D UNII-8 band. However, in the UNII-8 band of 6GHz band D, more detailed operation is performed.
- the 2.4 GHz band, 5 GHz band, UNII-6 band, and UNII-8 band are the frequency bands (frequency channels) that can be freely used without restrictions for the wireless LAN system. Become.
- the UNII-5 band and UNII-7 band are frequency bands (frequency channels) that are restricted by the position and time zone of the device.
- the frequency band that can be freely used by the wireless LAN system without restrictions is also referred to as the unrestricted frequency band, and the frequency band that has existing primary services and is restricted in use depending on the position and time zone of the device. It is also referred to as a restricted frequency band.
- FIG. 4 is a diagram showing a configuration example of a wireless communication device to which the present technology is applied.
- the wireless communication device 41 shown in FIG. 4 corresponds to the communication terminal 11 and the access point 12 shown in FIG. That is, the wireless communication device 41 functions as both an access point and a station (STA) constituting the wireless LAN system.
- STA station
- the wireless communication device 41 includes a network connection module 51, an information input module 52, a device control module 53, an information output module 54, a wireless communication module 55, and a positioning timing module 56.
- the wireless communication device 41 it is sufficient that the necessary ones of the network connection module 51 and the positioning timekeeping module 56 are provided, and the unnecessary ones of each of these parts are simplified and provided. It may be.
- the network connection module 51 functions as a communication modem or the like for connecting to the Internet network when, for example, the wireless communication device 41 operates as an access point, and connects to the Internet via a public communication line and an Internet service provider. ..
- the network connection module 51 supplies the data received via the Internet network to the device control module 53, and transmits the data supplied from the device control module 53 to the communication partner via the Internet network.
- the information input module 52 includes, for example, buttons, switches, a touch panel, a mouse, a keyboard, a microphone for acquiring user instructions by voice recognition, and the like.
- the information input module 52 supplies to the device control module 53, for example, a signal corresponding to an instruction input by a user's operation.
- the device control module 53 controls the operation of the entire wireless communication device 41 in response to a signal or the like supplied from the information input module 52, and causes the wireless communication device 41 to function as a device intended by the user, that is, an access point or a station. ..
- the information output module 54 includes, for example, display elements such as an LED (Light Emitting Diode) display unit, a liquid crystal display panel, and an organic EL (Electro Luminescence) display, and a speaker that outputs sound and music.
- display elements such as an LED (Light Emitting Diode) display unit, a liquid crystal display panel, and an organic EL (Electro Luminescence) display, and a speaker that outputs sound and music.
- the information output module 54 displays necessary information for the user by displaying the operating state of the wireless communication device 41 and various information obtained via the Internet network under the control of the device control module 53. (Notice.
- the wireless communication module 55 operates as a communication module for the wireless communication device 41 to carry out wireless communication.
- the wireless communication module 55 transmits the data supplied from the device control module 53 by wireless communication in a frame of a predetermined format, receives the signal transmitted by wireless communication, and extracts from the received signal. The data is supplied to the device control module 53.
- the positioning timekeeping module 56 acquires geographical position information indicating the position of the wireless communication device 41 at the current time, or acquires current time information indicating the current time, for example, by receiving a signal transmitted from a positioning satellite. It functions as a receiving module.
- the wireless communication module 55 is configured as shown in FIG. 5, for example.
- the wireless communication module 55 includes an interface 81, a transmission buffer 82, a transmission sequence management unit 83, a transmission frame construction unit 84, an information collection unit 85, a channel management unit 86, a transmission signal processing unit 87-1 to a transmission signal processing unit 87. -4, a transmission / reception antenna unit 88, a reception signal processing unit 89-1 to a reception signal processing unit 89-4, a reception frame analysis unit 90, a reception sequence management unit 91, and a reception buffer 92.
- the interface 81 to the transmission frame construction unit 84 and the transmission signal processing unit 87-1 to the transmission signal processing unit 87-4 are provided as blocks on the transmission side.
- the interface 81 and the reception signal processing unit 89-1 to the reception buffer 92 are provided as blocks on the reception side.
- transmission signal processing unit 87-1 when it is not necessary to distinguish the transmission signal processing unit 87-1 to the transmission signal processing unit 87-4, they are also simply referred to as the transmission signal processing unit 87.
- the received signal processing unit 89-1 when it is not necessary to distinguish the received signal processing unit 89-1 to the received signal processing unit 89-4, they are also simply referred to as the received signal processing unit 89.
- the interface 81 appropriately exchanges information with other modules constituting the wireless communication device 41 via the device control module 53.
- the interface 81 supplies various data supplied from the device control module 53 to the transmission buffer 82 and the information collection unit 85, and the interface 81 supplies the data supplied from the reception buffer 92 and the information collection unit 85 to the device control module 53. To supply.
- the transmission buffer 82 temporarily holds the transmission data supplied from the interface 81, and supplies the held transmission data to the transmission sequence management unit 83.
- the transmission data is user data stored in, for example, the MPDU (MAC Protocol Data Unit) of the transmission frame transmitted from the transmission / reception antenna unit 88 to the wireless communication partner, and a sequence number is assigned to each transmission data.
- MPDU MAC Protocol Data Unit
- the transmission sequence management unit 83 receives the supply of necessary information from the channel management unit 86, and manages the sequence of the transmission data supplied from the transmission buffer 82.
- the transmission sequence management unit 83 determines which sequence number transmission data is transmitted on which frequency channel based on the information supplied from the channel management unit 86, and the sequence management information indicating the determination result and The transmission data is supplied to the transmission frame construction unit 84.
- the transmission frame construction unit 84 constructs (generates) a transmission frame in which transmission data is stored based on the sequence management information and transmission data supplied from the transmission sequence management unit 83 and the information supplied from the channel management unit 86. ), And is supplied to the transmission signal processing unit 87.
- the information collecting unit 85 acquires (collects) geolocation position information and current time information from the positioning timekeeping module 56 via the interface 81, and supplies the information to the channel management unit 86.
- the information collecting unit 85 acquires available frequency time information by supplying the geolocation information to the network connection module 51 via the interface 81 and the device control module 53 and transmitting it to the database server 14, and manages the channel. It is supplied to the unit 86.
- the channel management unit 86 manages the frequency band and frequency channel used by the wireless communication device 41, and provides information necessary for the transmission sequence management unit 83, the transmission frame construction unit 84, the transmission signal processing unit 87, and the reception signal processing unit 89. To control the operation of each part of them.
- the channel management unit 86 controls the wireless communication device 41 to control wireless communication with other devices, such as transmission of a transmission frame by the transmission signal processing unit 87 and reception of a reception frame by the reception signal processing unit 89. Functions as a department.
- the bandwidth of the frequency band actually used for wireless communication can be different between the unconstrained frequency band and the constrained frequency band.
- the frequency band and frequency channel management by the channel management unit 86 includes, for example, geolocation information, current time information, available frequency time information, information supplied from the reception frame analysis unit 90, etc. supplied from the information collection unit 85. It is done based on.
- the transmission signal processing unit 87-1 to the transmission signal processing unit 87-4 perform modulation processing and signal processing on the transmission frame supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and obtain the result.
- the signal is supplied to the transmission / reception antenna unit 88.
- the transmission signal processing unit 87-1 to the transmission signal processing unit 87-4 function as a transmission unit that transmits a transmission frame in a predetermined frequency channel of the unconstrained frequency band or the constrained frequency band by the transmission / reception antenna unit 88.
- each transmission signal processing unit 87 may be configured so that transmission frames can be transmitted from the transmission / reception antenna unit 88 by using arbitrary frequency channels in the unconstrained frequency band and the constrained frequency band. That is, each transmission signal processing unit 87 may be configured to be compatible with all frequency bands (frequency channels).
- each of the transmission signal processing units 87 is configured to be able to transmit a transmission frame from the transmission / reception antenna unit 88 by using only each of the unconstrained frequency band or the constrained frequency band which is different from each other. It may have been.
- one transmission signal processing unit 87 corresponds to only a part of the unconstrained frequency band and the constrained frequency band, but it is not possible to combine all the transmission signal processing units 87 as appropriate. It can handle the constrained frequency band and the entire constrained frequency band.
- the channel management unit 86 manages which transmission signal processing unit 87 is used to transmit a transmission frame for each frequency band that can be used by the wireless communication device 41 and a frequency block composed of a plurality of continuous frequency channels ( Set).
- the channel management unit 86 operates the required number of transmission signal processing units 87 each time according to the frequency band used for transmitting the transmission frame, that is, the distribution of the frequency channels.
- a transmission frame is transmitted using a part of the 5 GHz band, a frequency band not restricted by the 6 GHz band, and a frequency band restricted by the 6 GHz band.
- the transmission signal processing unit 87-1 transmits a part of the transmission frame using a part of the 5 GHz band, and the transmission signal processing unit 87-2 is not restricted by the 6 GHz band. A part of the transmission frame is transmitted using the band.
- the transmission signal processing unit 87-3 and the transmission signal processing unit 87-4 transmit a part of the transmission frame using a frequency band restricted by the 6 GHz band.
- the transmission frame is transmitted by using a part of the 5 GHz band, the frequency band not restricted by the 6 GHz band, and the frequency band restricted by the 6 GHz band as a whole. That is, by channel bonding (carrier aggregation), a plurality of different frequency channels (frequency bands) are bundled and used for wireless communication.
- channel bonding carrier aggregation
- the channel management unit 86 uses the frequency channel of the unconstrained frequency band in combination with the frequency channel of the constrained frequency band so that the wireless communication is performed within a predetermined bandwidth. It functions as a control unit that controls the operation of the processing unit 87.
- a transmission frame may be transmitted by using a plurality of discontinuously arranged frequency blocks and frequency channels so as to secure a predetermined bandwidth.
- each transmission signal processing unit 87 may determine the frequency channel (frequency block) used for transmission of the transmission frame according to the number of consecutively arranged frequency channels.
- the transmission / reception antenna unit 88 transmits the transmission frame supplied from the transmission signal processing unit 87 to the communication partner device, or receives the reception frame transmitted from the communication partner device and supplies the reception frame to the reception signal processing unit 89. Or something.
- the reception signal processing unit 89-1 to the reception signal processing unit 89-4 are for receiving a signal of a predetermined frequency channel to the reception frame supplied from the transmission / reception antenna unit 88 according to the control of the channel management unit 86. Demodulation processing and the like are performed, and the signal obtained as a result is supplied to the reception frame analysis unit 90.
- each received signal processing unit 89 receives a reception frame transmitted in a predetermined frequency channel of the unconstrained frequency band or the restricted frequency band, and more specifically, receives a part of the signal of the reception frame by the transmission / reception antenna unit 88. Functions as a department.
- each of the plurality of received signal processing units 89 receives each of the portions of the received frames transmitted on different frequency channels, so that one received frame is received as a whole.
- the channel management unit 86 operates the required number of reception signal processing units 89 each time according to the frequency band used for the transmission of the reception frame, that is, the distribution of the frequency channel. In other words, the channel management unit 86 operates a different reception signal processing unit 89 for each frequency band (frequency channel).
- the reception frame analysis unit 90 reconstructs the reception frame from the signal supplied from the reception signal processing unit 89.
- reception frame analysis unit 90 extracts necessary information from the reception frame, for example, information described in the information element, by performing analysis processing on the reconstructed reception frame, and supplies the information to the channel management unit 86. To do.
- reception frame analysis unit 90 extracts the reception data from the reception frame based on the result of the analysis processing and supplies it to the reception sequence management unit 91.
- the reception sequence management unit 91 manages the sequence of the received data supplied from the reception frame analysis unit 90.
- the received data corresponds to the transmission data (user data) stored in the transmission frame, and a sequence number is assigned to each reception data.
- the reception sequence management unit 91 sorts a plurality of reception data extracted from the reception frame in order of the sequence number and supplies the data to the reception buffer 92.
- the reception buffer 92 temporarily holds the reception data supplied from the reception sequence management unit 91, and supplies the held reception data to the device control module 53 via the interface 81.
- wireless communication device 41 that functions as the communication terminal 11 shown in FIG. 1, and another wireless communication device 41 that functions as an access point 12 unlike the wireless communication device 41, and these communication terminals 11 And the access point 12 perform wireless communication.
- the geolocation information is acquired by receiving the signal from the positioning satellite 15 shown in FIG. 1, and the available frequency time information is acquired from the database server 14.
- user data is exchanged between the communication terminal 11 and the access point 12 by wireless communication, for example, as shown in FIG.
- the access point 12 obtains geographical position information by receiving a signal (positioning data) from the positioning satellite 15, and also obtains geographical position information from an external server, satellite, or the like. Also get the current time information.
- the access point 12 accesses the database server 14 as shown by the arrow Q12. ..
- the access point 12 requests the transmission of available frequency time information by transmitting the geolocation information to the database server 14.
- the database server 14 transmits the available frequency time information to the access point 12 as shown by the arrow Q13 in response to the request of the access point 12.
- the database server 14 generates available frequency time information indicating the availability of the restricted frequency band at each time for the current position of the access point 12 indicated by the geolocation information, and causes the access point 12 to use the available frequency time information. Send.
- the access point 12 is notified of the frequency (frequency channel) and time (time zone) within the restricted frequency band available at the current position of the access point 12.
- the access point 12 Based on the available frequency time information, the access point 12 has a frequency channel (frequency band) that can be used for wireless communication in the operation of the network to which it belongs, that is, a wireless LAN system, and an expiration date (expiration date) of those frequency channels. (Available time zone) is set, and the operation band information indicating the setting result is generated.
- frequency band frequency band
- expiration date expiration date
- the access point 12 makes the frequency available for wireless communication so that the total bandwidth of the frequency channels indicated by the operating bandwidth information becomes the desired bandwidth (for example, 320 MHz) desired to be secured in its own network. Select multiple channels.
- the frequency channel to be used for wireless communication is selected (determined) from the frequency channels in the non-constrained frequency band and the available frequency channels in the constrained frequency band indicated by the available frequency time information.
- a frequency channel in an unconstrained frequency band can be preferentially selected.
- the access point 12 stores the operation band information in the transmission frame as a beacon signal and transmits it to the communication terminal 11 connected to the network to which the access point 12 belongs, as shown by the arrow Q14. That is, the operation band information is notified to the communication terminal 11.
- the beacon signal (beacon frame) in which the operation band information is stored is periodically transmitted to the communication terminal 11, for example.
- the communication terminal 11 sets the frequency channels used for wireless communication and the expiration date of each frequency channel based on the operation band information included in the received beacon signal.
- the frequency channel that can be used for wireless communication that is, the frequency channel indicated by the operating band information will also be referred to as an operating channel.
- the communication terminal 11 and the access point 12 After the operation channel is set, as shown by arrow Q15, the communication terminal 11 and the access point 12 transmit and receive transmission frames using the set operation channel, that is, the frequency channel indicated by the operation band information. By doing so, user data is exchanged.
- the communication terminal 11 and the access point 12 can secure a desired bandwidth and realize high-speed wireless communication by using the restricted frequency band as needed.
- the operating band information may be stored and transmitted in a probe response or the like.
- the access point 12 when the access point 12 receives the probe request from the communication terminal 11, the access point 12 adds an information element of the operating bandwidth information to the probe response to the probe request and transmits it to the communication terminal 11.
- the unconstrained frequency band can be used by the conventional operation method, and when the unconstrained frequency band alone cannot secure a sufficient bandwidth, the constrained frequency band can also be used to obtain a sufficient bandwidth. Can be secured and efficient and high-speed wireless communication can be realized.
- the operation channel can be set efficiently by exchanging the operation band information between the access point 12 and the communication terminal 11. That is, since the access point 12 and the communication terminal 11 can share information on frequency channels used for communication, wireless communication can be performed even if frequency channels arranged discontinuously are used, for example.
- the communication terminal 11 may access the database server 14.
- the unconstrained frequency band and the constraint are similar to the example shown in FIG. A combination of frequency bands can be used.
- the communication terminal 11 obtains the geographical position information by receiving the signal (positioning data) from the positioning satellite 15, and the current time is obtained from an external server, satellite, or the like. get information.
- the communication terminal 11 accesses the database server 14 as shown by the arrow Q22.
- the communication terminal 11 requests the transmission of available frequency time information by transmitting the geolocation information to the database server 14.
- the database server 14 transmits the available frequency time information to the communication terminal 11 as shown by the arrow Q23 in response to the request of the communication terminal 11.
- the communication terminal 11 specifies (determines) the frequency channels that can be used in the network to which it belongs and the expiration dates of those frequency channels, based on the available frequency time information as needed.
- the communication terminal 11 notifies the surrounding access points 12 of the available frequency time information as shown by the arrow Q24.
- the access point 12 When the access point 12 receives the available frequency time information from the communication terminal 11, the access point 12 sets the operation channel and the expiration date of each operation channel based on the available frequency time information so that a desired bandwidth is secured. And generate operational bandwidth information.
- the access point 12 can obtain the available frequency time information without accessing the database server 14 by itself, and can generate the operating bandwidth information such that the desired bandwidth is secured.
- the access point 12 stores the operation band information in a predetermined transmission frame and transmits it to the communication terminal 11 as shown by the arrow Q25.
- the communication terminal 11 When the communication terminal 11 receives the operation band information from the access point 12, the communication terminal 11 sets the operation channel and the expiration date of each operation channel based on the received operation band information.
- the communication terminal 11 and the access point 12 send and receive user data and the like by transmitting and receiving transmission frames using the set operation channel.
- the communication terminal 11 acquires the available frequency time information in this way, the desired bandwidth is secured by appropriately combining the non-constrained frequency band and the constrained frequency band, and more efficient and high-speed wireless communication is performed. Can be realized.
- FIGS. 8 to 14 show configuration examples of various information (information elements) exchanged between the access point 12 and the communication terminal 11 and various information exchanged between the database server 14 and the database server 14. ..
- FIG. 8 is a diagram showing a configuration example of an information element of operating bandwidth information.
- the operating band information includes an element ID “Element ID” that identifies an information element (operating band information), an information length “Length” of the information element, and a source (access) of the operating band information.
- element ID that identifies an information element (operating band information), an information length “Length” of the information element, and a source (access) of the operating band information.
- the network to which point 12) belongs that is, the ID "Group BSS ID" of the group of BSS (Basic Service Set) is included.
- the operation band information includes the operation type "Operate Type” of the transmission frame in which the operation band information is stored, the transmission power information “Power Class” of the transmission frame, and the geographical location indicating the current position of the transmission source of the operation band information.
- Location information "Geographic Location” is also included.
- This geographical location information indicates the current location of the access point 12, that is, the geographical location where the operation channel is operated based on the operating bandwidth information.
- the operation bandwidth information includes the expiration date "Operation Time Limit” of the operation bandwidth information, the operation bandwidth “Operation Bandwidth” which is the total bandwidth of the operation channels when performing wireless communication based on the operation bandwidth information, and The operation channel information "Operation Channel Info” indicating the operation channel is included.
- the operation channel information "Operation Channel Info” includes the operation channel map information "Operation Channel Bitmap", the primary channel information "Primary Channel”, the highly available bandwidth information "Higher Usable Band Map”, and the medium available bandwidth information "Higher Usable Band Map”. "Middle Usable Band Map” and low-level available band information "Lower Usable Band Map” are included.
- the operation channel map information is bitmap information indicating a frequency channel used as an operation channel, that is, a frequency channel that can be used during wireless communication.
- the primary channel information is information indicating the primary, that is, the frequency channel having the highest priority of 20 MHz bandwidth.
- the highly available band information is information indicating the frequency band of the frequency channel having the next highest priority after the frequency channel indicated by the primary channel information.
- the medium available band information is information indicating the frequency band having the next highest priority after the frequency band indicated by the high available band information
- the low available band information is the information indicating the lowest priority frequency.
- Information indicating the band is information indicating the band.
- the frequency band indicated by these primary channel information, highly available band information, medium available band information, and low available band information is the frequency band of the frequency channel indicated by the operating channel map information.
- the operating channel used for communication is selected from the frequency channels indicated by the operating channel map information so that the total bandwidth of all operating channels actually used for communication is within the operating bandwidth.
- the frequency channels used for communication are sequentially selected from the operating channels in the frequency band having the highest priority.
- the information element of the operating band information shown in FIG. 8 as described above is stored in the beacon signal or the like and transmitted to the communication terminal 11. As a result, each communication terminal 11 is notified of the parameters required for setting the operation channel included in the operation band information.
- FIG. 9 is a diagram showing a configuration example of an available frequency time information frame transmitted by the communication terminal 11 to the access point 12, that is, a transmission frame such as a probe request including the available frequency time information.
- the available frequency time information frame includes the type information "Frame Control” indicating the type of the transmission frame, the duration information "Duration” indicating the duration of the transmission frame, and the source of the transmission frame.
- the transmission address "Transmit Address” and the reception address "Receive Address” indicating the destination of the transmission frame are included.
- the available frequency time information frame also includes the operation type "Operate Type” of the transmission frame and the geographic location information "Geographic Location” indicating the current position of the communication terminal 11 that has acquired (acquired) the available frequency time information. It has been.
- the expiration date of the frequency channel indicated by the available frequency time information that is, the available time limit "Available Time Limit”
- the available bandwidth information indicating the available bandwidth " “Available Bandwidth” and bitmap information "Available Channel Map” indicating available frequency channels are included.
- FIG. 10 is a diagram showing a configuration example of a notification frame for notifying the operating band information.
- This notification frame is, for example, a probe response that the access point 12 that has received a probe request including available frequency time information from the communication terminal 11 transmits to the communication terminal 11 as a response to the probe request.
- the notification frame includes the type information "Frame Control” indicating the type of the transmission frame (notification frame), the duration information "Duration” of the transmission frame, the transmission address "Transmit Address” of the transmission frame, and The receive address "Receive Address” of the transmission frame is included.
- the notification frame includes the operation type "Operate Type”, the geographical location information “Geographic Location”, the expiration date of the operation bandwidth information “Operation Time Limit”, and the operation bandwidth “Operation Bandwidth” during wireless communication based on the operation bandwidth information.
- the operation channel information “Operation Channel Info” is included.
- the operation channel information included in the notification frame includes the operation channel map information "Operation Channel Bitmap", the primary channel information "Primary Channel”, and the highly available bandwidth information "Higher Usable Band”, as in the example shown in FIG. "Map”, medium usable band information “Middle Usable Band Map”, and low usable band information "Lower Usable Band Map” are included.
- FIG. 11 is a diagram showing a configuration example of an information element of operational bandwidth information included in a beacon signal or the like as a transmission frame.
- This operable bandwidth information is stored in a beacon signal transmitted from the access point 12 to the communication terminal 11 when wireless communication is performed using only the unconstrained frequency band, for example.
- the information elements of the operational bandwidth information include the element ID "Element ID”, the information length "Length”, the BSS group ID “Group BSS ID”, and the operation type "Operate Type”. include.
- the information element of the operational bandwidth information includes the maximum bandwidth "Available Bandwidth” that can be used for wireless communication, the available information "2.4GHz Available” that indicates the frequency channel that can be used in the 2.4GHz band, and the 5GHz band.
- the available information "5GHz Available”, the available information “6GHz Available” in the 6GHz band, and the available information "Limited Band” in the restricted frequency band are included.
- the communication terminal 11 that acquires the operable bandwidth information shown in FIG. 11 from the access point 12 and performs wireless communication or is trying to perform wireless communication operates the bandwidth on the access point 12. It is a figure which shows the configuration example of the bandwidth increase request frame which requests the increase of.
- the bandwidth increase request frame includes the type information "Frame Control” indicating the type of the transmission frame (bandwidth increase request frame), the duration information "Duration” of the transmission frame, and the transmission address "Transmit” of the transmission frame. "Address”, the receiving address “Receive Address” of the transmission frame, and the operation type “Operate Type” are included.
- the required operating bandwidth that is, the requested operating bandwidth information "Request Bandwidth” indicating the increased operating bandwidth, the available information "2.4 GHz Available” in the 2.4 GHz band, and the 5 GHz band Includes available information "5GHz Available”, available information for the 6GHz band “6GHz Available”, and available information for the restricted frequency band "Limited Band”.
- the available information of each frequency band included in the band increase request frame indicates whether the communication terminal 11 that requests the increase in the operating bandwidth can support the use of those frequency bands.
- the available information "2.4GHz Available" in the 2.4GHz band indicates whether the communication terminal 11 can support the use of the 2.4GHz band.
- FIG. 13 shows a configuration example of an available frequency time information request, which is a request frame for requesting transmission of available frequency time information transmitted to the database server 14.
- the available frequency time information request includes the type information "Frame Control” indicating the type of transmission frame (request frame), the duration information "Duration” of the transmission frame, the transmission address "Transmit Address” of the transmission frame, and so on.
- the receive address "Receive Address” of the transmission frame and the request format "Request Type” are included.
- the available frequency time information request includes the first channel “Start Channel”, the last channel “End Channel”, the country identifier "Country Code”, the region identifier "Area Code”, and the source of the available frequency time information request. Geographic location information "Geographic Location” is included.
- the first channel “Start Channel” and the last channel “End Channel” are the first frequency channel and the last frequency channel of the frequency band for which the availability of the restricted frequency band is inquired.
- the country identifier "Country Code” and the region identifier "Area Code” are information indicating the countries and regions where the source of the available frequency time information request performs wireless communication, that is, the restricted frequency band is operated. is there.
- the database server 14 transmits the available frequency time information shown in FIG. 14, that is, the notification frame of the available frequency time information.
- the available frequency time information includes the type information "Frame Control” indicating the type of transmission frame (notification frame), the duration information "Duration” of the transmission frame, and the transmission address "Transmit Address” of the transmission frame. , The receive address "Receive Address” of the transmission frame, and the response format “Response Type” are included.
- the available frequency time information includes the bitmap length "BitmapLength" of the bitmap information, the first channel “StartChannel” of the bitmap information, the bitmap information "AvailableChannelMap” indicating the available frequency channel, and The expiration date of the frequency channel, that is, the available time limit "Available Time Limit” is included.
- the access point 12 and the communication terminal 11 can grasp the frequency channels that can be used within the restricted frequency band and the expiration date. ..
- the channel management unit 86 starts the operation as the access point 12 in step S11, the operation state is set to the request waiting state, and various requests from the communication terminal 11 are received.
- the reception signal processing unit 89 performs demodulation processing or the like on the reception frame supplied from the transmission / reception antenna unit 88, and outputs the signal obtained as a result. It is supplied to the reception frame analysis unit 90.
- the reception frame analysis unit 90 reconstructs the reception frame from the signal supplied from the reception signal processing unit 89, performs analysis processing, extracts the information described in the information element of the reception frame, and manages the channel. It is supplied to the unit 86.
- step S12 the channel management unit 86 determines whether or not a probe request has been received as a reception frame from the communication terminal 11.
- the information extracted from the reception frame is supplied from the reception frame analysis unit 90 to the channel management unit 86.
- the channel management unit 86 can specify what kind of received frame is received from the communication terminal 11 based on the information supplied from the received frame analysis unit 90.
- step S12 If it is determined in step S12 that the probe request has been received, the process then proceeds to step S22 to acquire information about the operating channel and transmit the probe response as a transmission frame.
- step S12 when it is determined in step S12 that the probe request has not been received, the channel management unit 86 has received the association request requesting connection to the network from the communication terminal 11 as a receiving frame in step S13. Judge whether or not.
- the channel management unit 86 acquires the application information of the communication terminal 11 that has requested the association from the reception frame analysis unit 90 in step S14.
- the application information is information about an application that can be executed by the communication terminal 11, and is included in the association request.
- the reception frame analysis unit 90 supplies the application information included in the reception frame to the channel management unit 86.
- step S14 When the process of step S14 is performed, the process then proceeds to step S17.
- the channel management unit 86 has received the bandwidth increase request frame requesting an increase in the operating bandwidth from the communication terminal 11 as a reception frame in step S15. Judge whether or not.
- step S15 If it is determined in step S15 that the bandwidth increase request frame has not been received, the process proceeds to step S24 thereafter.
- the channel management unit 86 receives the request operation bandwidth information stored in the bandwidth increase request frame in the reception frame analysis unit 90 in step S16. Obtain from.
- the reception frame analysis unit 90 supplies the information included in the reception frame to the channel management unit 86.
- the channel management unit 86 can acquire (acquire) the required operation bandwidth information and the available information of each frequency band from the reception frame analysis unit 90.
- step S16 When the process of step S16 is performed, the process then proceeds to step S17.
- step S17 is performed.
- step S17 the channel management unit 86 reads out the current operating bandwidth information held by itself.
- the channel management unit 86 when the wireless communication device 41 operates as the access point 12, the channel management unit 86 generates and holds the operation bandwidth information including the expiration date, the operation bandwidth, the operation channel information, etc. shown in FIG. There is. In step S17, the operating band information generated in this way is read out.
- the channel management unit 86 when the channel management unit 86 holds the operational bandwidth information shown in FIG. 11, the channel management unit 86 also reads the operational bandwidth information as appropriate, and if necessary, step S19 described later. And the operational bandwidth information is used for the processing of step S21.
- step S18 the channel management unit 86 needs to expand the operating bandwidth based on the application information acquired in step S14 or the requested operating bandwidth information acquired in step S16 and the operating bandwidth information read in step S17. Determine if it exists.
- the channel management unit 86 can determine whether or not the operating bandwidth needs to be expanded from the application information and the operating bandwidth included in the operating bandwidth information, that is, the operating bandwidth at the present time.
- the bandwidth indicated by the required operating bandwidth information is wider than the operating bandwidth included in the current operating bandwidth information, it is determined that the operating bandwidth needs to be expanded.
- step S18 If it is determined in step S18 that the operating bandwidth does not need to be expanded, that is, if the operating bandwidth used in the current operation is sufficient, the operating bandwidth is not expanded, and then the process is performed in step S22. Proceed to.
- the channel management unit 86 determines in step S19 whether or not expansion in the constrained frequency band is necessary.
- a frequency channel to be newly used as an operating channel is required. That is, it is necessary to add a new operation channel.
- step S19 if the frequency channel for expanding the operating bandwidth can be secured from the unconstrained frequency band, it is determined that the expansion in the constrained frequency band is not necessary.
- step S19 If it is determined in step S19 that expansion in the restricted frequency band is necessary, the information collecting unit 85 acquires available frequency time information in step S20.
- the channel management unit 86 generates, for example, the available frequency time information request shown in FIG. 13 and supplies it to the information collection unit 85 to request access to the database server 14.
- the information collecting unit 85 supplies the available frequency time information request to the network connection module 51 via the interface 81 and the device control module 53, and transmits the available frequency time information request to the database server 14.
- the network connection module 51 receives the transmitted available frequency time information, and the device control module 53 receives the transmitted available frequency time information. It is supplied to the interface 81 of the wireless communication module 55 via the above.
- the interface 81 supplies the available frequency time information supplied from the device control module 53 to the channel management unit 86 via the information collection unit 85.
- step S21 When the available frequency time information is supplied to the channel management unit 86 in this way, the process proceeds to step S21.
- the channel management unit 86 appropriately generates and holds the operational bandwidth information shown in FIG. 11 based on the acquired available frequency time information.
- step S19 If it is determined in step S19 that expansion in the constrained frequency band is not necessary, the process of step S20 is not performed, and then the process proceeds to step S21.
- step S19 If it is determined in step S19 that expansion in the constrained frequency band is not necessary, or if the processing in step S20 is performed, the channel management unit 86 sets the operating channel in step S21 and expands the operating bandwidth.
- the channel management unit 86 newly sets the frequency channel of the unconstrained frequency band based on the operation bandwidth information read in step S17 and the application information or the required operation bandwidth information. Set as the operation channel. That is, a frequency channel to be a new operating channel is determined from the frequency channels in the unconstrained frequency band.
- the channel management unit 86 includes the operation bandwidth information read in step S17, the application information or the required operation bandwidth information, and the available frequency time acquired in step S20. Based on the information, the frequency channel of the constrained frequency band is set as a new operation channel. That is, a frequency channel to be a new operating channel is determined from the frequency channels in the constrained frequency band.
- both the frequency channel of the constrained frequency band and the frequency channel of the non-constrained frequency band may be set as new operation channels.
- the channel management unit 86 updates the operation bandwidth information held.
- the expiration date, the operating bandwidth, the operating channel information, and the like included in the operating bandwidth information shown in FIG. 8 are updated.
- step S21 If it is determined in step S21 that the processing of step S21 is performed, that it is determined in step S18 that the operation band does not need to be expanded, or that the probe request is received in step S12, the processing of step S22 is performed.
- step S22 the channel management unit 86 acquires information on the operation channel, supplies the information on the operation channel to the transmission frame construction unit 84, and instructs the construction (generation) of the response frame.
- the channel management unit 86 reads out the operation band information held as information about the operation channel, and reads out other information necessary for generating the response frame.
- the response frame here is, for example, a transmission frame generated as a response to a probe request, an association request, or a bandwidth increase request frame.
- the transmission frame construction unit 84 when it is determined in step S12 that the probe request has been received, the transmission frame construction unit 84 generates a response frame for the probe request.
- the transmission frame construction unit 84 when it is determined in step S13 that the association request has been received, the transmission frame construction unit 84 generates a response frame for the association request.
- the transmission frame construction unit 84 when it is determined in step S15 that the bandwidth increase request frame has been received, the transmission frame construction unit 84 generates a response frame for the bandwidth increase request frame.
- the transmission frame construction unit 84 generates, for example, a response frame having a frame configuration shown in FIG. 10 as a transmission frame based on the information about the operation channel supplied from the channel management unit 86. That is, a response frame including operating bandwidth information including geolocation information, expiration date, operating bandwidth, operating channel information, and the like is generated.
- the transmission frame construction unit 84 supplies the generated response frame to the transmission signal processing unit 87. Further, the channel management unit 86 controls the operation of the transmission signal processing unit 87 based on the operation band information.
- the transmission signal processing unit 87 performs modulation processing and signal processing on the response frame supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and supplies the signal obtained as a result to the transmission / reception antenna unit 88. To do.
- step S23 the transmission / reception antenna unit 88 transmits the response frame supplied from the transmission signal processing unit 87.
- the operating channel actually used for communication is selected from the frequency channels within the available frequency band indicated by the operating band information, that is, the operating channels. Will be done.
- step S15 If it is determined in step S15 that the band increase request frame has not been received, the channel management unit 86 in step S24 determines that the operation channel in the restricted frequency band is based on the operation band information held by itself. Determine if the settings have been made.
- step S24 If it is determined in step S24 that the operating channel has been set in the restricted frequency band, the process then proceeds to step S25.
- step S25 the channel management unit 86 determines whether or not the expiration date of the operation channel in the restricted frequency band has been exceeded based on the operation band information held and the current time information supplied from the information collection unit 85. judge.
- step S25 If it is determined in step S25 that the expiration date has been exceeded, the operation channel of the restricted frequency band used so far cannot be used, and a new operation channel needs to be set. Therefore, the process proceeds to step S26. ..
- step S26 the channel management unit 86 reads out the operation band information held by itself. At this time, the channel management unit 86 also reads the operable bandwidth information as appropriate, and uses the operational bandwidth information for the processing of step S21 as necessary.
- step S26 When the process of step S26 is performed, the process then proceeds to step S19, and the above-described process is performed. At this time, in step S19, if it is possible to newly secure the band of the operation channel of the restricted frequency band that has exceeded the expiration date in the non-constrained frequency band, it is determined that expansion in the restricted frequency band is not necessary.
- step S25 If it is determined in step S25 that the expiration date has not been exceeded, then the process proceeds to step S27. Further, even when it is determined in step S24 that the operation channel in the restricted frequency band has not been set, the process proceeds to step S27 thereafter.
- step S27 the channel management unit 86 determines whether or not it is the transmission time of the beacon signal. For example, in the wireless communication device 41, when operating as an access point 12, a beacon signal is periodically transmitted at a predetermined time interval.
- step S27 If it is determined in step S27 that the transmission time of the beacon signal has not yet arrived, the process returns to step S11, and the above-described process is repeated.
- the channel management unit 86 reads the retained operation band information and supplies it to the transmission frame construction unit 84 in step S28, and the beacon Instructs the generation of a signal.
- the transmission frame construction unit 84 generates, for example, a transmission frame including the information element of the operation band information shown in FIG. 8 as a beacon signal based on the operation band information supplied from the channel management unit 86, and the transmission signal processing unit 87. Supply to.
- the channel management unit 86 controls the operation of the transmission signal processing unit 87 based on the operation band information, and transmits the beacon signal in which the operation band information is stored.
- the transmission signal processing unit 87 performs modulation processing and signal processing on the beacon signal (transmission frame) supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and obtains the signal obtained as a result. It is supplied to the transmission / reception antenna unit 88.
- a beacon signal including the operational bandwidth information shown in FIG. 11 may be generated instead of the beacon signal including the information element of the operational bandwidth information shown in FIG.
- step S29 the transmission / reception antenna unit 88 transmits the beacon signal supplied from the transmission signal processing unit 87.
- the processes of steps S11 to S29 described above are repeated while the wireless communication device 41 is operating as the access point 12.
- the wireless communication device 41 periodically transmits a beacon signal while updating the operation band information as appropriate, and transmits a response frame in response to the request of the communication terminal 11.
- the communication terminal 11 is notified of the operation band information by the beacon signal or the response frame. More efficient and high-speed wireless communication can be realized.
- step S61 the channel management unit 86 acquires the required bandwidth information from the device control module 53 via the information collection unit 85 and the interface 81.
- the device control module 53 knows how much operating bandwidth is required in the application executed by the wireless communication device 41.
- the device control module 53 generates the required bandwidth information indicating the operating bandwidth required for the application executed by the wireless communication device 41 in response to the request of the channel management unit 86, and via the interface 81 and the information collecting unit 85. Is supplied to the channel management unit 86.
- the channel management unit 86 may also acquire application information from the device control module 53.
- step S62 the channel management unit 86 determines whether or not the beacon signal has been received from the access point 12.
- the reception frame analysis unit 90 extracts the information element of the received beacon signal in step S63 and supplies it to the channel management unit 86.
- the transmission / reception antenna unit 88 receives the transmission frame as a reception frame, and the reception signal processing unit 89 receives the transmission frame. Supply.
- the reception signal processing unit 89 performs demodulation processing or the like on the reception frame supplied from the transmission / reception antenna unit 88, and supplies the signal obtained as a result to the reception frame analysis unit 90.
- the reception frame analysis unit 90 reconstructs the reception frame from the signal supplied from the reception signal processing unit 89 and performs analysis processing.
- reception frame analysis unit 90 extracts the information described in the information element of the reception frame and supplies it to the channel management unit 86.
- the beacon signal of the information element of the operation band information shown in FIG. 8 is received as a reception frame, and the reception frame analysis unit 90 extracts the operation band information from the received beacon signal and the channel management unit 86. Supply to.
- a beacon signal including the operable bandwidth information shown in FIG. 11 may be received, or a beacon signal not including the operating bandwidth information may be received.
- the channel management unit 86 appropriately uses the operational bandwidth information extracted from the beacon signal and supplied from the reception frame analysis unit 90. Hold.
- the channel management unit 86 uses the operable bandwidth information for generating the bandwidth increase request frame to be transmitted in step S68, steps S72 to S74, and step S69, which will be described later, as needed.
- step S64 the channel management unit 86 determines whether or not the information element extracted in step S63 includes the operating bandwidth information.
- step S64 If it is determined in step S64 that the operating band information is included, then the process proceeds to step S67.
- step S64 the process may proceed to step S67 even when the operational bandwidth information shown in FIG. 11 is included in the information element.
- the operable bandwidth information is acquired in step S67 described later, and the operational bandwidth information is used as a substitute for the operational bandwidth information in the subsequent processing, or the operational bandwidth information and the operational bandwidth information are used. Or be
- step S64 if it is determined in step S64 that the operating bandwidth information is not included, the channel management unit 86 instructs the transmission frame construction unit 84 to generate a probe request, and then the process proceeds to step S65. Further, even if it is determined in step S62 that the beacon signal is not received, the process proceeds to step S65 thereafter.
- the transmission frame construction unit 84 generates a probe request as a transmission frame in response to an instruction from the channel management unit 86, and supplies the probe request to the transmission signal processing unit 87.
- the transmission signal processing unit 87 performs modulation processing and signal processing on the probe request supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and transmits the signal obtained as a result to the transmission / reception antenna unit 88. Supply to.
- step S65 the transmission / reception antenna unit 88 transmits the probe request supplied from the transmission signal processing unit 87.
- step S66 the channel management unit 86 determines whether or not a response frame for the probe request has been received.
- step S66 If it is determined in step S66 that the response frame has not been received, the process of step S66 is repeated until the response frame is received.
- step S66 determines whether the response frame has been received. If it is determined in step S66 that the response frame has been received, the process proceeds to step S67.
- a response frame (notification frame) in which the operating bandwidth information is stored is received.
- the reception frame analysis unit 90 extracts the operation bandwidth information from the response frame as the reconstructed reception frame and supplies it to the channel management unit 86.
- step S66 If it is determined in step S66 that the response frame has been received, or if it is determined in step S64 that the operating bandwidth information is included, the process of step S67 is performed.
- step S67 the channel management unit 86 acquires (acquires) the operation band information included in the response frame of the probe request or the beacon signal by acquiring the operation band information from the reception frame analysis unit 90.
- the channel management unit 86 has the geolocation information, the expiration date, and the operation extracted from the information element shown in FIG. 8 included in the beacon signal and the notification frame of the response of the probe request shown in FIG. Acquires operational bandwidth information including bandwidth and operating channel information.
- step S68 the channel management unit 86 secures the bandwidth required for the application executed by the wireless communication device 41 based on the required bandwidth information obtained in step S61 and the operating bandwidth information obtained in step S67. Determine if it is possible.
- step S68 when the operating bandwidth indicated by the operating bandwidth information is equal to or greater than the operating bandwidth indicated by the required bandwidth information, it is determined that the required bandwidth can be secured.
- step S68 If it is determined in step S68 that the required bandwidth cannot be secured, then the process proceeds to step S69.
- the channel management unit 86 generates the required operation bandwidth information, the available information for each frequency band of the unconstrained frequency band and the constrained frequency band, and the like based on the operating bandwidth information and the required bandwidth information. Is supplied to the transmission frame construction unit 84, and is instructed to generate a bandwidth increase request frame.
- the transmission frame construction unit 84 generates the bandwidth increase request frame shown in FIG. 12 as a transmission frame based on the request operation bandwidth information and the available information supplied from the channel management unit 86, and generates a transmission signal processing unit. Supply to 87.
- the transmission signal processing unit 87 performs modulation processing and signal processing on the band increase request frame supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and transmits the signal obtained as a result to the transmission / reception antenna. Supply to unit 88.
- step S69 the transmission / reception antenna unit 88 transmits the band increase request frame supplied from the transmission signal processing unit 87.
- step S70 the channel management unit 86 determines whether or not a response frame for the bandwidth increase request frame has been received from the access point 12.
- step S70 If it is determined in step S70 that the response frame has not been received, the process then proceeds to step S72.
- step S70 when it is determined in step S70 that the response frame has been received, the channel management unit 86 acquires the operating bandwidth information from the received frame analysis unit 90 in step S71, and then the process proceeds to step S72. ..
- the response frame having the frame configuration shown in FIG. 10, that is, the response frame in which the operation band information shown in FIG. 10 is stored is received as a response to the bandwidth increase request frame.
- the operating bandwidth information included in this response frame is the operating bandwidth information after the expansion of the operating bandwidth performed in response to the bandwidth increase request frame.
- the channel management unit 86 acquires the operation band information supplied from the reception frame analysis unit 90 when such a response frame is received.
- step S68 If it is determined in step S68 that the required bandwidth can be secured, the process proceeds to step S72.
- step S68 If it is determined in step S68 that the required bandwidth can be secured, if it is determined in step S70 that the response frame has not been received, or if the process of step S71 is performed, the process of step S72 is performed. ..
- step S72 the channel management unit 86 sets an available frequency channel of the unconstrained frequency band as an operating channel based on the operating bandwidth information and the required bandwidth information. That is, among the frequency channels in the unconstrained frequency band, the frequency channels that can be used for wireless communication are determined.
- step S73 the channel management unit 86 determines whether or not to use the constrained frequency band, that is, whether or not to use the frequency channel of the constrained frequency band as the operating channel.
- the operation channel set in step S72 secures an operation bandwidth equal to or larger than the bandwidth indicated by the required bandwidth information, or indicates that the operation channel information of the operation bandwidth information cannot use the restricted frequency band. If so, it is determined that the restricted frequency band is not used.
- the bandwidth indicated by the required bandwidth information is not secured, but the operation channel information of the operating bandwidth information indicates that the constrained frequency band can be used, it is determined that the constrained frequency band is used. ..
- step S73 If it is determined in step S73 that the restricted frequency band is not used, the operation channel setting process ends. In this case, thereafter, wireless communication is performed using only the operating channels in the unconstrained frequency band.
- step S74 the channel management unit 86 determines the available frequency channels of the constrained frequency band based on the operating bandwidth information and the required bandwidth information. Set as the operating channel. That is, among the frequency channels in the restricted frequency band, the frequency channels that can be used for wireless communication are determined.
- step S75 the channel management unit 86 sets the expiration date of the operation channel of the restricted frequency band set in step S74 based on the operation band information.
- the wireless communication device 41 When the operating channel and expiration date of the wireless communication device 41 that functions as the communication terminal 11 are set in this way, the wireless communication device 41 performs wireless communication according to the settings.
- step S76 the channel management unit 86 determines whether or not the expiration date of the operation channel in the restricted frequency band has been exceeded based on the expiration date set in step S75 and the current time information supplied from the information collection unit 85. judge.
- step S76 If it is determined in step S76 that the expiration date has not been exceeded, the process of step S76 is repeated until it is determined that the expiration date has been exceeded.
- step S76 when it is determined in step S76 that the expiration date has been exceeded, it is necessary to newly set an operation channel, so the process returns to step S61, and the above-mentioned process is repeated.
- the wireless communication device 41 appropriately requests the access point 12 to expand the operating band, acquires the operating band information from the access point 12, and performs the wireless communication by itself. To set.
- the database server 14 may be accessed to acquire available frequency time information.
- the database server 14 is accessed in step S20, and the available frequency time information is acquired.
- step S111 the channel management unit 86 acquires application information.
- the channel management unit 86 is an application of an application executed by the wireless communication device 41 from the device control module 53 via the information collection unit 85 and the interface 81. Get information.
- step S112 the channel management unit 86 determines, based on the application information acquired (acquired) in step S111, whether or not the application indicated by the application information requires high-speed wireless communication.
- the bandwidth required for the application indicated by the application information is equal to or greater than a predetermined threshold value, it is determined that high-speed wireless communication is required.
- step S112 If it is determined in step S112 that high-speed wireless communication is not required, that is, if a narrow operating bandwidth is sufficient for wireless communication, it is not necessary to use the restricted frequency band for wireless communication, so database access processing Is finished.
- the channel management unit 86 calculates the bandwidth required for executing the application based on the application information in step S113.
- step S114 the channel management unit 86 determines whether or not it is necessary to use the constrained frequency band when executing the application, based on the bandwidth calculated in step S113.
- the operational bandwidth information and the operational bandwidth information held by the channel management unit 86 may also be referred to, if necessary.
- step S114 If it is determined in step S114 that the use of the restricted frequency band is not necessary, the database access process ends.
- the information collecting unit 85 acquires the geolocation information indicating the current position of the wireless communication device 41 in step S115.
- the positioning timekeeping module 56 acquires the geographical position information indicating the current position of the wireless communication device 41 by receiving a signal from the positioning satellite 15, and supplies it to the information collecting unit 85 via the interface 81.
- the information collecting unit 85 When the information collecting unit 85 acquires the geographical location information supplied in this way, the information collecting unit 85 supplies the geographical location information to the channel management unit 86.
- step S116 the channel management unit 86 determines whether or not the database server 14 can be accessed.
- the channel management unit 86 does not hold or cannot acquire the address of the database server 14, it is determined that it is not accessible.
- step S116 If it is determined in step S116 that the database is not accessible, the database access process ends.
- step S116 determines whether access is possible. If it is determined in step S116 that access is possible, then the process proceeds to step S117.
- the channel management unit 86 generates the available frequency time information request shown in FIG. 13 based on the address and geolocation information of the database server 14.
- the channel management unit 86 supplies the generated available frequency time information request to the network connection module 51 via the information collection unit 85, the interface 81, and the device control module 53.
- step S117 the network connection module 51 transmits the available frequency time information request supplied from the channel management unit 86 to the database server 14 via the Internet network or the like.
- the network connection module 51 When the database server 14 transmits the notification frame of the available frequency time information to the wireless communication device 41 in response to the available frequency time information request transmitted in this way, the network connection module 51 has transmitted. Receive a notification frame.
- the network connection module 51 supplies the received notification frame, that is, the available frequency time information, to the channel management unit 86 via the device control module 53, the interface 81, and the information collection unit 85.
- step S118 the channel management unit 86 determines whether or not there is a response to the available frequency time information request from the database server 14.
- step S118 If it is determined in step S118 that there is no response, that is, if the available frequency time information is not transmitted, the database access process ends.
- step S118 when it is determined in step S118 that there is a response, the channel management unit 86 acquires the available frequency time information supplied from the information collecting unit 85 in step S119 to obtain the available frequency time information. To win.
- the available frequency time information shown in FIG. 14 can be obtained. That is, as the available frequency time information, information such as bitmap information indicating the available frequency channel and the expiration date of the frequency channel indicated by the bitmap information can be obtained.
- the wireless communication device 41 appropriately accesses the database server 14 and acquires the available frequency time information.
- the access point 12 can use the usable frequency. Time information can be obtained.
- step S151 the channel management unit 86 reads out the operation band information.
- the channel management unit 86 reads out the operation band information updated and held in step S21 of FIG. If operational bandwidth information or the like is retained in addition to the operational bandwidth information, the operational bandwidth information or the like is also appropriately read out. If the operating band information is not retained, the process of step S151 is not performed, but if there is other information indicating an available frequency band or the like, such information is appropriately read out.
- the channel management unit 86 when the channel management unit 86 holds the operational bandwidth information obtained in step S67 of FIG. 16, the channel management unit 86 also reads the operational bandwidth information as needed.
- the channel management unit 86 also needs information (setting information) of the operation channels of each frequency band set in steps S72 and S74 of FIG. Read according to.
- step S152 the channel management unit 86 determines whether or not an application that requires high-speed wireless communication is running based on the held application information and the like.
- step S152 is performed based on the application information of the communication terminal 11 connected to its own network (BSS).
- BSS own network
- step S152 is performed for the application being executed by itself.
- step S152 If it is determined in step S152 that an application that requires high-speed wireless communication has not started, high-speed wireless communication is not required, so the high-speed wireless communication process ends.
- step S152 when it is determined in step S152 that an application requiring high-speed wireless communication is running, the channel management unit 86 in step S153 determines the bandwidth required for high-speed wireless communication performed on the running application. Is calculated.
- the channel management unit 86 is required to obtain the required bandwidth based on the application information held and the required bandwidth information acquired in step S61 of FIG.
- step S154 the channel management unit 86 determines whether or not the wireless communication device 41 is operating as the communication terminal 11.
- step S154 If it is determined in step S154 that the communication terminal 11 is not operating, that is, if it is operating as the access point 12, the process proceeds to step S161.
- the channel management unit 86 acquires the operable bandwidth information of the access point 12 in step S155.
- step S155 the channel management unit 86 obtains operational bandwidth information that has already been extracted and held from the beacon signal or the like received from the access point 12 or obtained by newly receiving the beacon signal or the like. read out.
- the wireless communication device 41 when the wireless communication device 41 is operating as the communication terminal 11, that is, when it is determined in step S154 that the wireless communication device 41 is operating as the communication terminal 11, the wireless communication device 41 still obtains the operating band information. Explain that it is not.
- step S156 the channel management unit 86 determines whether or not the constraint frequency band has already been set based on the operation channel setting information read in step S151 and the operable bandwidth information obtained in step S155. judge.
- step S156 it is determined that the constrained frequency band is set when the operation channel is set in the constrained frequency band or when the constrained frequency band is available in the operable bandwidth information. Will be done.
- step S156 If it is determined in step S156 that the constraint frequency band has been set, the process proceeds to step S161.
- step S156 determines whether or not the constraint frequency band has not been set yet.
- the channel management unit 86 determines in step S157 whether or not the database server 14 can be accessed. For example, in step S157, the same determination process as in step S116 of FIG. 17 is performed.
- step S157 If it is determined in step S157 that the access is not possible, then the process proceeds to step S161.
- the channel management unit 86 accesses the database server 14 in step S158 and acquires the available frequency time information.
- step S158 a process similar to the database access process described with reference to FIG. 17 is performed.
- the channel management unit 86 generates the expiration date of the available frequency time information, the available bandwidth information, the bitmap information indicating the available frequency channel, and the like based on the acquired available frequency time information. It supplies to the transmission frame construction unit 84 and instructs the generation of the available frequency time information frame.
- the transmission frame construction unit 84 generates the available frequency time information frame shown in FIG. 9 as a transmission frame based on the information supplied from the channel management unit 86, and supplies it to the transmission signal processing unit 87.
- the channel management unit 86 controls the transmission of the available frequency time information, that is, the available frequency time information frame, to the access point 12 by the transmission signal processing unit 87.
- the transmission signal processing unit 87 performs modulation processing and signal processing on the available frequency time information frame supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and transmits the signal obtained as a result to the transmission / reception antenna. Supply to unit 88.
- step S159 the transmission / reception antenna unit 88 notifies the access point 12 of the available frequency time information by transmitting the available frequency time information frame supplied from the transmission signal processing unit 87.
- step S160 the transmission / reception antenna unit 88 receives the response frame from the access point 12 for the available frequency time information frame.
- step S160 If there is no response from the access point 12, that is, if the response frame is not transmitted, the process of step S160 is not performed.
- the response frame in which the operation band information shown in FIG. 10 is stored is received by the transmission / reception antenna unit 88 as a reception frame, and is supplied to the channel management unit 86 via the reception signal processing unit 89 and the reception frame analysis unit 90. Will be done.
- step S160 was performed, it was determined in step S157 that it was inaccessible, it was determined in step S156 that the constraint frequency band was not set, or it was not operating as the communication terminal 11 in step S154. If it is determined, the process of step S161 is performed.
- step S161 the channel management unit 86 acquires the operating bandwidth information.
- step S161 the channel management unit 86 acquires the operation band information stored in the response frame from the reception frame analysis unit 90.
- the channel management unit 86 has the operating bandwidth information, the operating channel setting information, and the operable bandwidth information that it has acquired and held in the past.
- Information indicating available frequency bands, such as, is used as operating band information.
- the channel management unit 86 reads out the operation band information held by itself.
- step S162 the channel management unit 86 sets the operation channel of the unconstrained frequency band to be used for the wireless communication actually performed from now on, based on the operation band information.
- the channel management unit 86 assumes that a plurality of continuously arranged operating channels are actually used for wireless communication from among the operating channels in the unconstrained frequency band, for example, in accordance with the existing regulations regarding the unconstrained frequency band. select.
- step S163 the channel management unit 86 determines whether or not the bandwidth is insufficient. For example, in step S163, if the operation channel set in step S162 can secure the required bandwidth calculated in step S153, it is determined that the bandwidth is not insufficient.
- step S163 If it is determined in step S163 that the bandwidth is not insufficient, the process then proceeds to step S167.
- the channel management unit 86 can set the operation channel in the restricted frequency band based on the operating bandwidth information in step S164. Judge whether or not. That is, it is determined whether or not the restricted frequency band can be used.
- step S164 If it is determined in step S164 that the operation channel in the constrained frequency band cannot be set, then the process proceeds to step S167. In this case, although a sufficient bandwidth cannot be secured, the set operation channel is used to perform wireless communication.
- step S164 determines whether the operation channel in the constrained frequency band can be set. If it is determined in step S164 that the operation channel in the constrained frequency band can be set, the process proceeds to step S165.
- step S165 the channel management unit 86 sets the operation channel of the restricted frequency band to be used for the wireless communication actually performed from now on, based on the operation band information.
- the channel management unit 86 selects, for example, a plurality of continuously arranged operating channels from among the operating channels in the restricted frequency band as those to be actually used for wireless communication.
- step S166 the channel management unit 86 sets the expiration date of the operation channel selected in step S165 based on the operation band information.
- step S166 If the process of step S166 is performed, it is determined in step S164 that the setting in the constrained frequency band is not possible, or it is determined in step S163 that the bandwidth is not insufficient, the process of step S167 is performed. ..
- step S167 the channel management unit 86 carries out high-speed data communication, that is, high-speed wireless communication.
- the transmission sequence management unit 83 receives the supply of necessary information from the channel management unit 86, performs sequence management of the transmission data supplied from the transmission buffer 82, and transmits the sequence management information and the transmission data to the transmission frame. It is supplied to the construction unit 84.
- the transmission frame construction unit 84 constructs (generates) a transmission frame in which the transmission data is stored based on the sequence management information and the transmission data supplied from the transmission sequence management unit 83, and supplies the transmission frame to the transmission signal processing unit 87. To do.
- the transmission signal processing unit 87 performs modulation processing and signal processing on the transmission frame supplied from the transmission frame construction unit 84 under the control of the channel management unit 86, and supplies the signal obtained as a result to the transmission / reception antenna unit 88. To do.
- the transmission / reception antenna unit 88 wirelessly transmits the transmission frame supplied from the transmission signal processing unit 87.
- the channel management unit 86 controls the transmission signal processing unit 87 so that the transmission frame is transmitted using the operation channel set (selected) in step S162 or step S165.
- the unconstrained frequency band and the constrained frequency band are appropriately combined and used, and a plurality of operating channels are bundled to realize high-speed wireless communication in which a sufficient bandwidth is used.
- the method of bundling a plurality of operation channels for wireless communication in this way is called channel bonding or carrier aggregation.
- step S167 a transmission frame transmitted from another wireless communication device 41 as a communication partner is appropriately received as a reception frame.
- step S168 the channel management unit 86 determines whether or not the expiration date set in step S166 has expired based on the current time information supplied from the information collecting unit 85.
- step S168 If it is determined in step S168 that the expiration date has expired, the high-speed wireless communication process ends.
- step S168 determines in step S169 whether or not the operation of the application has ended.
- step S169 If it is determined in step S169 that the operation of the application has not been completed, the process returns to step S167, and the above-described process is repeated.
- step S169 if it is determined in step S169 that the operation of the application has ended, the high-speed wireless communication process ends.
- the wireless communication device 41 appropriately accesses the database server 14 to acquire available frequency time information, and within the range of the frequency band indicated by the operating band information, the unconstrained frequency band or the restricted frequency band. Set the operation channel in and perform wireless communication.
- the part protruding upward in the figure represents one frequency channel, and in the figure, the horizontal direction indicates the frequency.
- the shaded frequency channels indicate that they are operating channels.
- a restricted frequency band that is restricted in use and an unconstrained frequency band that can be freely used without restrictions are combined, and frequency channels having a predetermined bandwidth are continuously used.
- FIG. 20 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to continuously use a frequency channel having a predetermined bandwidth.
- 11 channels of the UNII-5 band of the 6 GHz band A, which is the restricted frequency band, and 5 channels of the UNII-6 band of the 6 GHz band B, which is the unconstrained frequency band, are combined, and a total of 16 channels are used.
- An example is shown that uses a bandwidth of up to 320 MHz.
- FIG. 21 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to continuously use a frequency channel having a predetermined bandwidth.
- 3 channels of the UNII-7 band of the 6 GHz band C which is the constrained frequency band
- 12 channels of the UNII-8 band of the 6 GHz band D which is the unconstrained frequency band
- the UNII-7 band and the UNII-8 band An example is shown in which a maximum bandwidth of 320 MHz is used by combining one channel that corresponds to the boundary and using a total of 16 channels.
- FIG. 22 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to divide and use a frequency channel having a predetermined bandwidth.
- a total of 16 channels are used by combining 8 channels of the UNII-5 band of the 6 GHz band A, which is the constrained frequency band, and 8 channels of the UNII-8 band of the 6 GHz band D, which is the unconstrained frequency band.
- An example of using a bandwidth of up to 320 MHz is shown.
- FIG. 23 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to divide and use a frequency channel having a predetermined bandwidth.
- FIG. 24 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to divide and use a frequency channel having a predetermined bandwidth.
- 8 channels of 5 GHz band A which is an unconstrained frequency band, 5 channels of UNII-6 band of 6 GHz band B, and 3 channels of UNII-5 of 6 GHz band A which is a constrained frequency band are combined.
- An example is shown in which a total of 16 channels are used and a maximum bandwidth of 320 MHz is used.
- FIG. 25 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to divide and use a frequency channel having a predetermined bandwidth.
- 4 channels of the UNII-7 band of the 6 GHz band C which is the restricted frequency band 4 channels of the UNII-6 band of the 6 GHz band B which is the unconstrained frequency band, 4 channels of the 5 GHz band A, and 5 GHz.
- An example is shown in which a maximum bandwidth of 320 MHz is used by combining 4 channels of band B and using a total of 16 channels.
- FIG. 26 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to divide and use a frequency channel having a predetermined bandwidth.
- FIG. 27 shows an example in which a restricted frequency band and an unconstrained frequency band are combined to divide and use a frequency channel having a predetermined bandwidth.
- one channel of the UNII-7 band of the 6 GHz band C which is the restricted frequency band
- one channel of the 2.4 GHz band which is the unconstrained frequency band
- four channels of the 5 GHz band A four channels of the 5 GHz band B
- An example is shown in which a maximum of 320 MHz bandwidth is used by combining 2 channels of UNII-6 band of 6 GHz band B and 4 channels of UNII-8 band of 6 GHz band D and using a total of 16 channels. There is.
- FIG. 28 shows an example in which a frequency channel having a predetermined bandwidth is divided and used in an unconstrained frequency band while avoiding the use of the restricted frequency band.
- FIG. 29 shows an example in which a frequency channel having a predetermined bandwidth is divided and used in an unconstrained frequency band while avoiding the use of the restricted frequency band.
- a total of 16 channels are used by combining 5 channels of UNII-6 band of 6 GHz band B, which is an unconstrained frequency band, and 11 channels of 5 GHz band B, and a maximum bandwidth of 320 MHz is used.
- An example is shown.
- FIG. 30 shows an example in which a frequency channel having a predetermined bandwidth is divided and used by using only the restricted frequency band.
- a total of 16 are combined with three 4-channel blocks of the UNII-5 band of the 6 GHz band A (12 channels in total) and 4 channels of the UNII-7 band of the 6 GHz band C, which are the constraint frequency bands.
- An example is shown of using channels to take advantage of bandwidths up to 320MHz.
- the series of processes described above can be executed by hardware or software.
- the programs that make up the software are installed on the computer.
- the computer includes a computer embedded in dedicated hardware and, for example, a general-purpose personal computer capable of executing various functions by installing various programs.
- FIG. 31 is a block diagram showing a configuration example of computer hardware that executes the above-mentioned series of processes programmatically.
- the CPU 501 may be a processor such as a microprocessor or a processing circuit.
- An input / output interface 505 is further connected to the bus 504.
- An input unit 506, an output unit 507, a recording unit 508, a communication unit 509, and a drive 510 are connected to the input / output interface 505.
- the input unit 506 includes a keyboard, a mouse, a microphone, an image sensor, and the like.
- the output unit 507 includes a display, a speaker, and the like.
- the recording unit 508 includes a hard disk, a non-volatile memory, and the like.
- the communication unit 509 includes a network interface and the like.
- the drive 510 drives a removable recording medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
- the CPU 501 loads the program recorded in the recording unit 508 into the RAM 503 via the input / output interface 505 and the bus 504 and executes the above-described series. Is processed.
- the program executed by the computer (CPU501) can be recorded and provided on a removable recording medium 511 as a package medium or the like, for example. Programs can also be provided via wired or wireless transmission media such as local area networks, the Internet, and digital satellite broadcasting.
- the program can be installed in the recording unit 508 via the input / output interface 505 by mounting the removable recording medium 511 in the drive 510. Further, the program can be received by the communication unit 509 and installed in the recording unit 508 via a wired or wireless transmission medium. In addition, the program can be pre-installed in the ROM 502 or the recording unit 508.
- the program executed by the computer may be a program that is processed in chronological order in the order described in this specification, or may be a program that is processed in parallel or at a necessary timing such as when a call is made. It may be a program in which processing is performed.
- the embodiment of the present technology is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present technology.
- this technology can have a cloud computing configuration in which one function is shared by a plurality of devices via a network and processed jointly.
- each step described in the above flowchart can be executed by one device or shared by a plurality of devices.
- one step includes a plurality of processes
- the plurality of processes included in the one step can be executed by one device or shared by a plurality of devices.
- this technology can also have the following configurations.
- a first transmitter that transmits signals using frequency channels in the freely available unconstrained frequency band
- a second transmitter that transmits signals using frequency channels in the restricted frequency band that are restricted in use
- the first transmission unit and the second transmission so that wireless communication can be performed within a predetermined operating bandwidth by using the frequency channel of the unconstrained frequency band and the frequency channel of the constrained frequency band in combination.
- a wireless communication device including a control unit that controls the operation of the unit.
- the available information includes frequency information indicating a frequency in the constrained frequency band available at the position.
- the available information includes time information indicating a time zone in which the frequency indicated by the frequency information can be used.
- the control unit determines a frequency channel of the restricted frequency band that can be used for the wireless communication based on the available information.
- the control unit controls transmission of operational band information indicating a frequency channel of the restricted frequency band that can be used for the wireless communication to another wireless communication device.
- the wireless communication device controls periodic transmission of the operating band information to the other wireless communication device.
- the wireless communication device controls transmission of the available information to the access point.
- the wireless communication device Further provided with a receiver for receiving operational band information indicating the available frequency channels of the constrained frequency band.
- the wireless communication device determines a frequency channel of the restricted frequency band used for the wireless communication based on the operation band information.
- the wireless communication device according to any one of (1) to (9), wherein the predetermined operating bandwidth is 320 MHz.
- Wireless communication device (12) The wireless communication device according to any one of (1) to (11), wherein the bandwidth used for the wireless communication differs between the unconstrained frequency band and the restricted frequency band.
- a first transmitter that transmits signals using freely available unconstrained frequency bands and a second transmitter that transmits signals using restricted frequency bands that are restricted in use A wireless communication device equipped with a unit The first transmission unit and the second transmission so that wireless communication can be performed within a predetermined operating bandwidth by using the frequency channel of the unconstrained frequency band and the frequency channel of the constrained frequency band in combination.
- a wireless communication method that controls the operation of the unit (16) A first transmitter that transmits signals using frequency channels in the freely available unconstrained frequency band, and a second transmission that transmits signals using frequency channels in restricted frequency bands that are restricted in use.
- a computer that controls a wireless communication device equipped with a unit
- the first transmission unit and the second transmission so that wireless communication can be performed within a predetermined operating bandwidth by using the frequency channel of the unconstrained frequency band and the frequency channel of the constrained frequency band in combination.
- a program that executes processing including steps that control the operation of parts.
- 11 communication terminals 11 communication terminals, 12 access points, 14 database servers, 41 wireless communication devices, 85 information collection units, 86 channel management units, 87-1 to 87-4, 87 transmission signal processing units, 89-1 to 89-4, 89 Received signal processing unit
Abstract
Description
〈本技術について〉
本技術は、所望の帯域幅が連続して確保できない場合においても、任意の周波数チャネルを束ねることで、より効率よく通信を行うことができるようにするものである。
それでは、以下、本技術についてより詳細に説明する。
続いて、本技術を適用した無線通信装置の構成について説明する。
また、無線通信モジュール55は、例えば図5に示すように構成される。
続いて、無線通信装置41による通信シーケンスについて説明する。
ここで、アクセスポイント12と通信端末11との間で授受される各種の情報(情報エレメント)や、データベースサーバ14との間で授受される各種の情報の構成例を図8乃至図14に示す。
次に、無線通信装置41がアクセスポイント12や通信端末11として機能するときに行われる動作について、より詳細に説明する。
次に、無線通信装置41が通信端末11(ステーション)として機能するときの動作について説明する。
また、例えば無線通信装置41が通信端末11またはアクセスポイント12として動作しているときに、データベースサーバ14にアクセスし、利用可能周波数時刻情報を取得することがある。
さらに、無線通信装置41が他の無線通信装置41との間で高速な無線通信を行ってユーザデータを送受信するときに行われる処理について説明する。
ここで、図19乃至図30を参照して、無線通信装置41が利用する動作チャネルの割り当て例、つまり動作チャネルの設定例について説明する。
ところで、上述した一連の処理は、ハードウェアにより実行することもできるし、ソフトウェアにより実行することもできる。一連の処理をソフトウェアにより実行する場合には、そのソフトウェアを構成するプログラムが、コンピュータにインストールされる。ここで、コンピュータには、専用のハードウェアに組み込まれているコンピュータや、各種のプログラムをインストールすることで、各種の機能を実行することが可能な、例えば汎用のパーソナルコンピュータなどが含まれる。
自由に利用可能な非制約周波数帯域の周波数チャネルを利用して信号を送信する第1の送信部と、
利用に制約を受ける制約周波数帯域の周波数チャネルを利用して信号を送信する第2の送信部と、
前記非制約周波数帯域の周波数チャネルおよび前記制約周波数帯域の周波数チャネルを組み合わせて利用することで所定の動作帯域幅内で無線通信が行われるように、前記第1の送信部と前記第2の送信部の動作を制御する制御部と
を備える無線通信装置。
(2)
前記無線通信装置の位置を示す地理的位置情報をサーバに送信させることで、前記位置における前記制約周波数帯域の利用の可否を示す利用可能情報を取得する情報収集部をさらに備える
(1)に記載の無線通信装置。
(3)
前記利用可能情報には、前記位置において利用可能な前記制約周波数帯域の周波数を示す周波数情報が含まれている
(2)に記載の無線通信装置。
(4)
前記利用可能情報には、前記周波数情報により示される周波数を利用可能な時間帯を示す時間情報が含まれている
(3)に記載の無線通信装置。
(5)
前記制御部は、前記利用可能情報に基づいて、前記無線通信に利用可能とする前記制約周波数帯域の周波数チャネルを決定する
(2)乃至(4)の何れか一項に記載の無線通信装置。
(6)
前記制御部は、前記無線通信に利用可能とする前記制約周波数帯域の周波数チャネルを示す運用帯域情報の他の無線通信装置への送信を制御する
(5)に記載の無線通信装置。
(7)
前記制御部は、前記運用帯域情報の前記他の無線通信装置への周期的な送信を制御する
(6)に記載の無線通信装置。
(8)
前記制御部は、前記利用可能情報のアクセスポイントへの送信を制御する
(2)乃至(4)の何れか一項に記載の無線通信装置。
(9)
前記制約周波数帯域の利用可能な周波数チャネルを示す運用帯域情報を受信する受信部をさらに備え、
前記制御部は、前記運用帯域情報に基づいて、前記無線通信に利用する前記制約周波数帯域の周波数チャネルを決定する
(1)乃至(4)の何れか一項に記載の無線通信装置。
(10)
前記所定の動作帯域幅は320MHzである
(1)乃至(9)の何れか一項に記載の無線通信装置。
(11)
前記第1の送信部および前記第2の送信部は、帯域幅が20MHzである1または複数の周波数チャネルを利用して信号を送信する
(1)乃至(10)の何れか一項に記載の無線通信装置。
(12)
前記非制約周波数帯域と前記制約周波数帯域とで前記無線通信に利用される帯域幅が異なる
(1)乃至(11)の何れか一項に記載の無線通信装置。
(13)
前記非制約周波数帯域は6GHz帯である
(1)乃至(12)の何れか一項に記載の無線通信装置。
(14)
前記非制約周波数帯域は2.4GHz帯または5GHz帯である
(1)乃至(12)の何れか一項に記載の無線通信装置。
(15)
自由に利用可能な非制約周波数帯域の周波数チャネルを利用して信号を送信する第1の送信部と、利用に制約を受ける制約周波数帯域の周波数チャネルを利用して信号を送信する第2の送信部とを備える無線通信装置が、
前記非制約周波数帯域の周波数チャネルおよび前記制約周波数帯域の周波数チャネルを組み合わせて利用することで所定の動作帯域幅内で無線通信が行われるように、前記第1の送信部と前記第2の送信部の動作を制御する
無線通信方法。
(16)
自由に利用可能な非制約周波数帯域の周波数チャネルを利用して信号を送信する第1の送信部と、利用に制約を受ける制約周波数帯域の周波数チャネルを利用して信号を送信する第2の送信部とを備える無線通信装置を制御するコンピュータに、
前記非制約周波数帯域の周波数チャネルおよび前記制約周波数帯域の周波数チャネルを組み合わせて利用することで所定の動作帯域幅内で無線通信が行われるように、前記第1の送信部と前記第2の送信部の動作を制御する
ステップを含む処理を実行させるプログラム。
Claims (16)
- 自由に利用可能な非制約周波数帯域の周波数チャネルを利用して信号を送信する第1の送信部と、
利用に制約を受ける制約周波数帯域の周波数チャネルを利用して信号を送信する第2の送信部と、
前記非制約周波数帯域の周波数チャネルおよび前記制約周波数帯域の周波数チャネルを組み合わせて利用することで所定の動作帯域幅内で無線通信が行われるように、前記第1の送信部と前記第2の送信部の動作を制御する制御部と
を備える無線通信装置。 - 前記無線通信装置の位置を示す地理的位置情報をサーバに送信させることで、前記位置における前記制約周波数帯域の利用の可否を示す利用可能情報を取得する情報収集部をさらに備える
請求項1に記載の無線通信装置。 - 前記利用可能情報には、前記位置において利用可能な前記制約周波数帯域の周波数を示す周波数情報が含まれている
請求項2に記載の無線通信装置。 - 前記利用可能情報には、前記周波数情報により示される周波数を利用可能な時間帯を示す時間情報が含まれている
請求項3に記載の無線通信装置。 - 前記制御部は、前記利用可能情報に基づいて、前記無線通信に利用可能とする前記制約周波数帯域の周波数チャネルを決定する
請求項2に記載の無線通信装置。 - 前記制御部は、前記無線通信に利用可能とする前記制約周波数帯域の周波数チャネルを示す運用帯域情報の他の無線通信装置への送信を制御する
請求項5に記載の無線通信装置。 - 前記制御部は、前記運用帯域情報の前記他の無線通信装置への周期的な送信を制御する
請求項6に記載の無線通信装置。 - 前記制御部は、前記利用可能情報のアクセスポイントへの送信を制御する
請求項2に記載の無線通信装置。 - 前記制約周波数帯域の利用可能な周波数チャネルを示す運用帯域情報を受信する受信部をさらに備え、
前記制御部は、前記運用帯域情報に基づいて、前記無線通信に利用する前記制約周波数帯域の周波数チャネルを決定する
請求項1に記載の無線通信装置。 - 前記所定の動作帯域幅は320MHzである
請求項1に記載の無線通信装置。 - 前記第1の送信部および前記第2の送信部は、帯域幅が20MHzである1または複数の周波数チャネルを利用して信号を送信する
請求項1に記載の無線通信装置。 - 前記非制約周波数帯域と前記制約周波数帯域とで前記無線通信に利用される帯域幅が異なる
請求項1に記載の無線通信装置。 - 前記非制約周波数帯域は6GHz帯である
請求項1に記載の無線通信装置。 - 前記非制約周波数帯域は2.4GHz帯または5GHz帯である
請求項1に記載の無線通信装置。 - 自由に利用可能な非制約周波数帯域の周波数チャネルを利用して信号を送信する第1の送信部と、利用に制約を受ける制約周波数帯域の周波数チャネルを利用して信号を送信する第2の送信部とを備える無線通信装置が、
前記非制約周波数帯域の周波数チャネルおよび前記制約周波数帯域の周波数チャネルを組み合わせて利用することで所定の動作帯域幅内で無線通信が行われるように、前記第1の送信部と前記第2の送信部の動作を制御する
無線通信方法。 - 自由に利用可能な非制約周波数帯域の周波数チャネルを利用して信号を送信する第1の送信部と、利用に制約を受ける制約周波数帯域の周波数チャネルを利用して信号を送信する第2の送信部とを備える無線通信装置を制御するコンピュータに、
前記非制約周波数帯域の周波数チャネルおよび前記制約周波数帯域の周波数チャネルを組み合わせて利用することで所定の動作帯域幅内で無線通信が行われるように、前記第1の送信部と前記第2の送信部の動作を制御する
ステップを含む処理を実行させるプログラム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20854215.9A EP4021053A4 (en) | 2019-08-19 | 2020-08-06 | WIRELESS COMMUNICATION DEVICE AND METHOD, AND PROGRAM |
BR112022002613A BR112022002613A2 (pt) | 2019-08-19 | 2020-08-06 | Dispositivo e método de comunicação sem fio, e, programa |
US17/633,925 US20220295291A1 (en) | 2019-08-19 | 2020-08-06 | Wireless communication device and method, and program |
JP2021540720A JPWO2021033555A1 (ja) | 2019-08-19 | 2020-08-06 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019149772 | 2019-08-19 | ||
JP2019-149772 | 2019-08-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021033555A1 true WO2021033555A1 (ja) | 2021-02-25 |
Family
ID=74661023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/030117 WO2021033555A1 (ja) | 2019-08-19 | 2020-08-06 | 無線通信装置および方法、並びにプログラム |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220295291A1 (ja) |
EP (1) | EP4021053A4 (ja) |
JP (1) | JPWO2021033555A1 (ja) |
BR (1) | BR112022002613A2 (ja) |
WO (1) | WO2021033555A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007300419A (ja) * | 2006-04-28 | 2007-11-15 | Toshiba Corp | コグニティブ無線システム |
JP2012134650A (ja) * | 2010-12-20 | 2012-07-12 | National Institute Of Information & Communication Technology | Tvwsチャネルの割り当てシステム及び方法 |
JP2013143624A (ja) * | 2012-01-10 | 2013-07-22 | Kddi Corp | 複数の無線通信帯域に対する探索時間を短くする無線lan用のアクセスポイント、無線端末及びプログラム |
JP2015076752A (ja) | 2013-10-09 | 2015-04-20 | 日本電信電話株式会社 | 通信装置、周波数変換装置、及び通信方法 |
JP2018074540A (ja) * | 2016-11-04 | 2018-05-10 | 株式会社国際電気通信基礎技術研究所 | 無線通信装置および無線通信方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9014164B2 (en) * | 2010-06-20 | 2015-04-21 | Lg Electronics Inc. | Method and apparatus for identifying channel information in a wireless network |
CN103416017B (zh) * | 2010-11-12 | 2016-11-16 | 交互数字专利控股公司 | 用于执行信道聚合和媒介访问控制重传的方法和设备 |
US20180199342A1 (en) * | 2017-01-09 | 2018-07-12 | Qualcomm Incorporated | Background scan with dynamic time and frequency switching |
-
2020
- 2020-08-06 JP JP2021540720A patent/JPWO2021033555A1/ja active Pending
- 2020-08-06 BR BR112022002613A patent/BR112022002613A2/pt not_active Application Discontinuation
- 2020-08-06 WO PCT/JP2020/030117 patent/WO2021033555A1/ja unknown
- 2020-08-06 EP EP20854215.9A patent/EP4021053A4/en active Pending
- 2020-08-06 US US17/633,925 patent/US20220295291A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007300419A (ja) * | 2006-04-28 | 2007-11-15 | Toshiba Corp | コグニティブ無線システム |
JP2012134650A (ja) * | 2010-12-20 | 2012-07-12 | National Institute Of Information & Communication Technology | Tvwsチャネルの割り当てシステム及び方法 |
JP2013143624A (ja) * | 2012-01-10 | 2013-07-22 | Kddi Corp | 複数の無線通信帯域に対する探索時間を短くする無線lan用のアクセスポイント、無線端末及びプログラム |
JP2015076752A (ja) | 2013-10-09 | 2015-04-20 | 日本電信電話株式会社 | 通信装置、周波数変換装置、及び通信方法 |
JP2018074540A (ja) * | 2016-11-04 | 2018-05-10 | 株式会社国際電気通信基礎技術研究所 | 無線通信装置および無線通信方法 |
Non-Patent Citations (1)
Title |
---|
CARIOU LAURENT , INTEL, STACEY ROBERT, CHEN XIAOGANG, HUANG PO-KAI, TANAKA SONY YUSUKE, CARNEY WILLIAM, MORIOKA YUICHI, SCHELSTRAE: "EXtreme Throughput 802.11", IEEE 802.11-18/0789R9, no. 9, 10 May 2018 (2018-05-10), XP068125936 * |
Also Published As
Publication number | Publication date |
---|---|
JPWO2021033555A1 (ja) | 2021-02-25 |
EP4021053A4 (en) | 2023-09-27 |
EP4021053A1 (en) | 2022-06-29 |
BR112022002613A2 (pt) | 2022-05-03 |
US20220295291A1 (en) | 2022-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018171375A1 (zh) | 一种网络切片选择方法、用户设备及网络设备 | |
US20170339688A1 (en) | Method of network slicing and related apparatuses using the same | |
CN102474805B (zh) | 用于多载波无线网络中的有效信息广播的系统、方法和装置 | |
JP2018524867A (ja) | 周波数領域リソース構成方法及び装置 | |
KR20160122668A (ko) | 무선 통신 시스템에서 랜덤 접속 채널을 위한 자원 할당 방법 및 장치 | |
CN108464047A (zh) | 无线站系统、无线终端及其方法 | |
WO2022022688A1 (zh) | 一种同步信号块的传输方法和通信装置 | |
JP5410693B2 (ja) | 周波数環境での遊休チャンネル検索方法及びその装置 | |
US9155115B2 (en) | Method and apparatus for generating connection identifier for device-to-device communication | |
CN110932827B (zh) | 一种侧行信息的传输方法、通信设备和网络设备 | |
RU2742100C1 (ru) | Способ передачи данных, оконечное устройство и сетевое устройство | |
JP7465220B2 (ja) | 端末、通信システム及び通信方法 | |
WO2019100356A1 (zh) | 载波选取的方法和设备、终端设备 | |
CN112997548A (zh) | 用于无线通信系统中漫游终端对网络切片互斥接入的方法和装置 | |
KR101372668B1 (ko) | 통신시스템에서 자원할당 정보 전송 방법 및 장치 | |
WO2020029403A1 (zh) | 侧行信道配置方法、终端设备和网络设备 | |
WO2021102815A1 (zh) | 系统信息获取方法及装置 | |
CN111213430A (zh) | 基站设备以及用于发送数据和信号的方法 | |
WO2019029588A1 (zh) | 确定上行传输资源的方法、终端及网络设备 | |
WO2021033555A1 (ja) | 無線通信装置および方法、並びにプログラム | |
AU2012302442B2 (en) | Apparatus and method for broadcast in system performing inter-device direct communication | |
EP3534661B1 (en) | Internet of vehicles transmission resource acquisition method and terminal | |
WO2019191994A1 (zh) | 无线通信方法、装置及系统 | |
CN109155995B (zh) | 一种资源指示方法及相关设备 | |
CN109802808A (zh) | 一种同步块与寻呼调度信令关联方法、指示方法及装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20854215 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021540720 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112022002613 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 2020854215 Country of ref document: EP Effective date: 20220321 |
|
ENP | Entry into the national phase |
Ref document number: 112022002613 Country of ref document: BR Kind code of ref document: A2 Effective date: 20220211 |