WO2021044753A1 - 通信装置および通信方法 - Google Patents
通信装置および通信方法 Download PDFInfo
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- WO2021044753A1 WO2021044753A1 PCT/JP2020/028189 JP2020028189W WO2021044753A1 WO 2021044753 A1 WO2021044753 A1 WO 2021044753A1 JP 2020028189 W JP2020028189 W JP 2020028189W WO 2021044753 A1 WO2021044753 A1 WO 2021044753A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
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- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- This disclosure relates to communication devices and communication methods.
- Patent Document 1 discloses an information processing device that appropriately executes a process of connecting a communication device that can use a plurality of frequency bands (for example, 2.4 GHz and 5 GHz) and an external device.
- a communication device that can use a plurality of frequency bands (for example, 2.4 GHz and 5 GHz) and an external device.
- the non-limiting examples of the present disclosure contribute to the provision of communication devices, terminals, and communication methods capable of executing at least one of multi-band and multi-channel.
- the communication device includes a control unit that sets information regarding at least one of multiband and multichannel in the extended field of the beacon signal, and a communication unit that transmits the beacon signal.
- the communication device includes a communication unit that receives the beacon signal in which information regarding at least one of multi-band and multi-channel is set in the extended field of the beacon signal, and a multi based on the information. It has a control unit that executes communication based on at least one of a band and a multi-channel.
- information regarding at least one of multi-band and multi-channel is set in the extended field of the beacon signal, and the beacon signal is transmitted.
- the communication method of the communication device receives the beacon signal in which information regarding at least one of multiband and multichannel is set in the extended field of the beacon signal, and based on the information, multi Performs communication based on at least one of band and multi-channel.
- At least one of multiband and multichannel can be performed.
- the figure which showed the configuration example of the beacon frame The figure which showed the configuration example of the wireless communication system which concerns on 1st Embodiment
- the figure which showed the configuration example of the beacon frame The figure which showed the configuration example of the beacon frame
- the figure which showed an example of a modulated signal The figure which showed an example of a modulated signal
- the figure which showed the configuration example of the wireless communication system of the wireless LAN which concerns on 2nd Embodiment The figure which showed the configuration example of the beacon frame
- the figure which showed the configuration example of the beacon frame Diagram showing a hardware configuration example of a communication device
- the figure which showed an example of a modulated signal Diagram showing another hardware configuration example of a communication device The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-band communication The figure explaining an example of multi-band communication
- the figure explaining an example of multi-channel communication The figure explaining an example of multi-channel communication
- the figure explaining an example of multi-channel communication Diagram showing a configuration example of a data frame Diagram showing a configuration example of the Probe request frame Diagram showing a configuration example of the Probe response frame Diagram showing a configuration example of the Association request frame Diagram showing a configuration example of the Association response frame
- the SSID (Service Set Identifier) of the wireless LAN may be different in the 2.4 GHz band and the 5 GHz band, but may be the same (common) in the case of band steering.
- the MAC (Media Access Control) address of the access point may be different in the 2.4 GHz band and the 5 GHz band, but may be the same (common) in the case of band steering.
- a terminal compatible with 5 GHz band is detected and the detected client is guided to 5 GHz band.
- the congested 2.4 GHz band is released to the legacy terminal.
- the above-mentioned guidance can reduce channel utilization and improve the end-user experience.
- the terminal may be guided to the 2.4 GHz band.
- FIG. 1 is a diagram showing a configuration example of a beacon frame.
- the numerical values in FIG. 1 indicate the data lengths of the fields described below.
- the unit is bytes.
- the beacon frame contains, for example, the following fields.
- the beacon frame includes a variable length frame body (field).
- the frame body contains, for example, the following fields.
- variable length frame body contains various information (fields) in addition to the SSID (field) and country (field), but the illustration is omitted in FIG.
- the BSSID of the AP is set in the "BSSID (Basic Service Set identifier)" of the beacon frame transmitted by the access point (hereinafter, may be referred to as AP).
- the SSID of the AP is set in "SSID”. Since the beacon frame is broadcast, "DA” is set to all 1.
- the MAC address of the AP is set in "SA” and "BSSID”.
- band steering is introduced into a wireless LAN wireless communication system, for example, the same SSID is set in the AP in the 2.4 GHz band and the 5 GHz band.
- the SSID for band steering is registered in the terminal capable of band steering.
- the AP transmits a beacon of the frequency band in which the terminal is to be guided.
- the terminal operates a communication unit that transmits and receives a 2.4 GHz band wireless signal and a communication unit that transmits and receives a 5 GHz band wireless signal, and communicates with the AP using the communication unit that has acquired the SSID. As a result, the terminal communicates with the AP in the frequency band induced by the AP.
- the AP broadcasts a beacon in the 5 GHz band when guiding the terminal to the 5 GHz band.
- the terminal receives the beacon in the communication unit in the 5 GHz band and wirelessly communicates with the AP in the 5 GHz band.
- the terminal communicates with the AP in the 5 GHz band induced by the AP.
- a wireless communication system capable of performing band steering and multi-band / multi-channel (at least one of multi-band and multi-channel) is desired.
- a wireless LAN communication system capable of performing band steering and performing multi-band multi-channel is provided.
- FIG. 2 is a diagram showing a configuration example of the wireless communication system according to the first embodiment.
- the wireless communication system has AP1a, 1b and terminals 2a to 2c.
- the wireless communication system performs wireless communication based on a wireless LAN communication standard.
- AP1a is an AP that can execute band steering and can execute multi-band and multi-channel.
- the terminals 2a to 2c are terminals capable of performing band steering and performing multi-band multi-channel.
- beacon # 1.1 The beacon of the second frequency band transmitted by AP1a may be described as beacon # 1.2.
- the SSID of Beacon # 1.1 and the SSID of Beacon # 1.2 are made the same in order to perform band steering.
- SSID # A is set in the SSID of Beacon # 1.1 and the SSID of Beacon # 1.2.
- the SA of the beacon # 1.1 and the SA of the beacon # 1.2 are made the same in order to execute the band steering. That is, the MAC address (BSSID) in Beacon # 1.1 and the MAC address (BSSID) in Beacon # 1.2 are made the same.
- the MAC address # a is set in the SA of the beacon # 1.1 and the SA of the beacon # 1.2.
- the terminals 2a to 2c include a communication unit that wirelessly communicates in the first frequency band and a communication unit that wirelessly communicates in the second frequency band.
- the terminals 2a to 2c operate the communication unit of the first frequency band and the communication unit of the second frequency band, and communicate with the AP by using the communication unit that has acquired the SSID # A and the MAC address #a. I do. That is, the terminals 2a to 2c do not distinguish (consciously) the first frequency band and the second frequency band, acquire the SSID # A and the MAC address # a, and grasp the existence of the AP1a. As a result, the terminal can realize band steering.
- the method of executing multi-band / multi-channel is specified, but it is determined whether the terminals 2a to 2c are guided to the first frequency band or the second frequency band (band steering). Not specified.
- band steering is executed and multi-band / multi-channel is executed. Therefore, the wireless communication system sets the SSID of the beacon # 1.1 and the SSID of the beacon # 1.2 to be the same, and sets the SA of the beacon # 1.1 and the SA of the beacon # 1.2 to be the same. Perform multi-band multi-channel under the same set conditions. That is, in the wireless communication system of FIG. 2, multi-band multi-channel is executed under the condition that band steering can be executed.
- information on multi-band / multi-channel communication is set in, for example, an extended field of a beacon frame. That is, the beacon frame is provided with an extended field for storing information regarding multi-band / multi-channel communication.
- the information on multi-band / multi-channel communication is set in other fields. May be good.
- the information is named here regarding multi-band / multi-channel communication, the name is not limited to this, and the information included in the information regarding multi-band / multi-channel communication is important.
- the information regarding the multi-band / multi-channel communication may include only the information regarding the multi-band communication or only the information regarding the multi-channel communication. At this time, it may be referred to as information on multi-band communication or information on multi-channel communication.
- the extended field provided in the beacon frame may be referred to as an MBMC (Multi-band Multi-channel) field.
- the MBMC field may have a fixed length or a variable length.
- FIG. 3A is a diagram showing a configuration example of the beacon frame of Beacon # 1.1.
- FIG. 3B is a diagram showing a configuration example of a beacon frame of beacon # 1.2.
- the SA, BSSID, and SSID of Beacon # 1.1 are the same as the SA, BSSID, and SSID of Beacon # 1.2.
- the Beacon frame options of Beacon # 1.1 and Beacon # 1.2 are provided with MBMC fields.
- the MBMC field stores, for example, information regarding whether or not multi-band / multi-channel is possible.
- the MBMC field may be arranged, for example, in an optional portion of the beacon frame and is not limited to the positions shown in FIGS. 3A and 3B. As mentioned above, the MBMC field may be included in the beacon frame.
- the MBMC field for example, information indicating whether or not AP1a is multi-band capable (multi-band compatible) is stored.
- AP1a is a multi-band compatible AP.
- the MBMC field of the beacon frame stores information indicating that AP1a can be multi-banded.
- a multi-band / multi-channel compatible terminal When a multi-band / multi-channel compatible terminal receives Beacon # 1.1 and Beacon # 1.2, it refers to the MBMC fields of Beacon # 1.1 and Beacon # 1.2.
- the MBMC field stores information indicating that AP1a is a multi-band compatible AP
- the multi-band / multi-channel compatible terminal has the SSID of Beacon # 1.1 and the SSID of Beacon # 1.2. To distinguish between.
- the multi-band / multi-channel compatible terminal distinguishes between the beacon # 1.1 of the first frequency band and the beacon # 1.2 of the second frequency band based on the information in the MBMC field.
- the multi-band / multi-channel compatible terminal can execute multi-band-based communication based on the first frequency band of beacon # 1.1 and the second frequency band of beacon # 1.2. ..
- the MBMC field for example, information indicating whether or not AP1a is multi-channel capable (multi-channel compatible) is stored.
- AP1a is a multi-channel compatible AP.
- the MBMC field of the beacon frame stores information indicating that the AP1a can be multi-channeled.
- a multi-band / multi-channel compatible terminal When a multi-band / multi-channel compatible terminal receives Beacon # 1.1 and Beacon # 1.2, it refers to the MBMC fields of Beacon # 1.1 and Beacon # 1.2.
- the MBMC field stores information indicating that AP1a is a multi-channel compatible AP
- the multi-band / multi-channel compatible terminal has the SSID of Beacon # 1.1 and the SSID of Beacon # 1.2. To distinguish between.
- the multi-band / multi-channel compatible terminal distinguishes between the beacon # 1.1 of the first frequency band and the beacon # 1.2 of the first frequency band based on the information in the MBMC field.
- the multi-band / multi-channel compatible terminal is based on the beacon # 1.1 of the first frequency band and the beacon # 1.2 of the second frequency band, and the terminal supports the multi-channel in the first frequency band. Communication, or multi-channel communication in the second frequency band, or both can be carried out.
- Legacy terminals do not refer to the MBMC fields of Beacon # 1.1 and Beacon # 1.2.
- the legacy terminal uses the SSID of the beacon # 1.1 in the first frequency band and the SSID of the beacon # 1.2 in the second frequency band, and the frequency band of the beacon that has acquired the SSID to be used with AP1a. connect.
- Multi-band communication may be defined as follows.
- the first communication device may simultaneously receive a plurality of modulated signals transmitted by one or more communication devices (for example, AP (access point), base station) which are communication partners.
- a plurality of modulation signals there are modulation signals of a plurality of frequency bands (for example, 5 GHz band and 6 GHz band).
- the first communication device may simultaneously communicate with one or more communication devices that are communication partners using a plurality of frequency bands.
- FIG. 4 is a diagram showing an example of a modulated signal.
- FIG. 4 shows a modulation signal 11a in the first frequency band, a modulation signal 11b in the second frequency band, and a modulation signal 11c in the third frequency band.
- the first frequency band is, for example, a 5 GHz band.
- the second frequency band is, for example, a 6 GHz band.
- the third frequency band is, for example, a 2.4 GHz band.
- the terminal may simultaneously receive modulated signals 11a to 11c of a plurality of frequency bands from the AP.
- the terminal may simultaneously receive modulated signals in any two or more frequency bands of the 5 GHz band, the 6 GHz band, and the 2.4 GHz band from the AP.
- Multi-channel communication may be defined as follows.
- the first communication device may simultaneously receive a plurality of modulated signals transmitted by one or more communication devices (for example, AP (access point), base station) which are communication partners.
- a plurality of modulated signals there are modulated signals of a plurality of channels in the first frequency band (for example, first channel and second channel in the 5 GHz band).
- the first communication device may simultaneously communicate with one or more communication devices that are communication partners using a plurality of channels in the first frequency band.
- FIG. 5A and 5B are diagrams showing an example of a modulated signal.
- FIG. 5A shows a modulated signal 12a and a modulated signal 12b in a certain frequency band.
- FIG. 5B shows a modulated signal 13a of a certain frequency band and a modulated signal 13b.
- a certain frequency band is, for example, a 5 GHz band.
- the terminal may receive modulated signals of multiple channels from the AP at the same time. For example, the terminal may simultaneously receive the modulated signal of the first channel in the 5 GHz band and the modulated signal of the second channel from the AP. That is, the terminal may simultaneously receive modulation signals of a plurality of adjacent channels from the AP.
- the terminal may simultaneously receive, for example, the modulated signal of the first channel of the 5 GHz band and the modulated signal of the fourth channel from the AP. That is, the terminal may simultaneously receive modulation signals of a plurality of discrete channels from the AP.
- the terminal When the terminal receives the modulated signal 12a and the modulated signal 12b shown in FIG. 5A at the same time, the terminal can secure a bandwidth of 240 MHz. When the terminal receives the modulated signal 13a shown in FIG. 5B and the modulated signal 13b at the same time, the terminal can secure a bandwidth of 360 MHz.
- the AP sets information related to multi-band / multi-channel communication in the MBMC field of the beacon frame.
- the AP wirelessly transmits a beacon frame in which the information is set.
- the terminal receives a beacon frame in which information regarding multi-band / multi-channel communication is set in the MBMC field.
- the terminal executes multi-band, multi-channel communication based on the above information.
- the AP and the terminal can obtain the effect of being able to execute multi-band and multi-channel.
- the case where the terminal performs multi-channel communication and the case where the terminal performs multi-band communication are described separately, but the terminal performs multi-channel communication and multi-band communication at the same time. You may. Further, considering the setting of the MAC address and SSID of the AP, it is possible to obtain the effect that multi-band / multi-channel communication and band steering can be performed.
- the MBMC field of the beacon may contain information on a frequency band capable of multi-band communication.
- the MBMC field of the beacon may contain information on a frequency band capable of multi-channel communication.
- FIG. 6 is a diagram showing a configuration example of the wireless communication system according to the first modification of the first embodiment.
- the same parts as those in FIG. 2 are designated by the same reference numerals.
- the AP1a in FIG. 6 transmits beacons in the first frequency band, the second frequency band, and the third frequency band.
- the first frequency band is, for example, a 5 GHz band.
- the second frequency band is, for example, a 6 GHz band.
- the third frequency band is, for example, a 2.4 GHz band.
- the beacon of the third frequency band may be referred to as Beacon # 1.3.
- the SSID of the beacon # 1.1, the SSID of the beacon # 1.2, and the SSID of the beacon # 1.3 are made the same.
- SSID # A is set in the SSID of Beacon # 1.1, the SSID of Beacon # 1.2, and the SSID of Beacon # 1.3.
- the SA of the beacon # 1.1, the SA of the beacon # 1.2, and the SA of the beacon # 1.3 are made the same. That is, the MAC address (BSSID) in beacon # 1.1, the MAC address (BSSID) in beacon # 1.2, and the MAC address (BSSID) in beacon # 1.3 are made the same.
- the MAC address #a is set in the SA of the beacon # 1.1, the SA of the beacon # 1.2, and the SA of the beacon # 1.3.
- AP1a sets the information of the frequency band capable of multi-band communication in the MBMC fields (see, for example, FIGS. 3A and 3B) provided in the beacons # 1.1 to # 1.3.
- AP1a sets the information of the second frequency band in the MBMC field of beacon # 1.1 of the first frequency band.
- AP1a sets the information of the first frequency band in the MBMC field of the beacon # 1.2 of the second frequency band.
- AP1a sets the MBMC field of beacon # 1.3 in the third frequency band with information indicating that multi-band is not possible. That is, the following information is set in the MBMC fields of the beacons # 1.1 to # 1.3.
- the terminals 2a to 2c that have received the beacon # 1.1 of the first frequency band refer to the MBMC field of the beacon # 1.1, and the first frequency band of the beacon # 1.1 and the MBMC field.
- Multi-band communication can be performed using the second frequency band indicated by.
- Terminals 2a to 2c that have received Beacon # 1.2 in the second frequency band refer to the MBMC field of Beacon # 1.2 and are indicated by the second frequency band of Beacon # 1.2 and the MBMC field.
- Multi-band communication is possible using the first frequency band.
- the terminals 2a to 2c that have received the beacon # 1.3 in the third frequency band refer to the MBMC field of the beacon # 1.3 and determine that multi-band communication is not possible.
- the terminals 2a to 2c that have received the beacon # 1.3 in the third frequency band communicate with the AP1a using one third frequency band.
- information on a frequency band capable of multi-band communication is set in the MBMC field
- information on a frequency band capable of multi-channel communication may be set.
- the following information may be set in the MBMC fields of beacons # 1.1 to # 1.3.
- -Beacon # 1.1 Information indicating whether multi-channel communication is possible in the first frequency band-Beacon # 1.2: Information indicating whether multi-channel communication is possible in the second frequency band-Beacon # 1.3: Information indicating whether multi-channel communication is possible in the third frequency band
- information on one frequency band capable of multi-band communication is set in the MBMC field of one beacon, but the present invention is not limited to this.
- the following information may be set in the MBMC fields of beacons # 1.1 to # 1.3.
- -Beacon # 1.1 Information on the second frequency band and information on the third frequency band-Beacon # 1.2: Information on the first frequency band and information on the third frequency band-Beacon # 1 .3: Information on the first frequency band and information on the second frequency band
- terminals 2a to 2c that have received beacon # 1.1 in the first frequency band can perform multi-band communication using the first frequency band, the second frequency band, and the third frequency band. It can.
- the terminals 2a to 2c that have received the beacon # 1.2 in the second frequency band can perform multi-band communication using the first frequency band, the second frequency band, and the third frequency band.
- the terminals 2a to 2c that have received the beacon # 1.1 in the third frequency band can perform multi-band communication using the first frequency band, the second frequency band, and the third frequency band. That is, information on two or more frequency bands capable of multi-band communication may be set in the MBMC field of one beacon.
- multi-band communication is possible in the MBMC fields of beacon # 1.1 and beacon # 1.2.
- Information on the same third frequency band is set as the same frequency band.
- the first channel is used for the third frequency band indicated by the MBMC field of Beacon # 1.1
- the third frequency band indicated by the MBMC field of Beacon # 1.2 is the second.
- the channel may be set to be used. That is, when the same frequency band is set as a frequency band capable of multi-band communication in the MBMC field of different beacons, different channels may be set to be used in that frequency band.
- frequency band information capable of multi-band communication and frequency band information capable of multi-channel communication may be set separately.
- the following information may be set in the MBMC field of each beacon # 1.1 to # 1.3.
- Frequency band information that enables multi-band communication -Beacon # 1.1: Information indicating whether or not the first frequency band can be used during multi-band communication-Beacon # 1.2: Use the second frequency band during multi-band communication Information indicating whether or not it is possible ⁇ Beacon # 1.3: Information indicating whether or not it is possible to use the third frequency band during multi-band communication
- Frequency band information capable of multi-channel communication -Beacon # 1.1: Information indicating whether multi-channel communication is possible in the first frequency band-Beacon # 1.2: Information indicating whether multi-channel communication is possible in the second frequency band-Beacon # 1.3: Information indicating whether multi-channel communication is possible in the third frequency band
- the beacon frame may be provided with two MBMC fields. In one MBMC field, frequency band information capable of multi-band communication may be set, and in the other MBMC field, frequency band information capable of multi-channel communication may be set.
- Multi-channel communication may be disabled in the third frequency band. For example, in the 2.4 GHz band, since the number of channels that can be secured is small, multi-channel communication may be disabled.
- the MBMC field of beacon # 1.3 in the third frequency band does not have to be set with information indicating whether or not multi-channel is possible.
- the MBMC field may not be provided in beacon # 1.3 in the third frequency band. Therefore, the following frequency band information capable of multi-channel communication may be set in the MBMC fields of Beacon # 1.1 and Beacon # 1.2.
- Frequency band information capable of multi-channel communication -Beacon # 1.1: Information indicating whether multi-channel is possible in the first frequency band-Beacon # 1.2: Information indicating whether multi-channel is possible in the second frequency band
- multi-band communication may be disabled in the third frequency band.
- the number of channels that can be secured is small, so multi-band communication may be disabled.
- the MBMC field of beacon # 1.3 in the third frequency band does not have to be set with information indicating whether or not multi-band is possible.
- the MBMC field may not be provided in beacon # 1.3 in the third frequency band. Therefore, the following frequency band information capable of multi-band communication may be set in the MBMC fields of Beacon # 1.1 and Beacon # 1.2.
- Frequency band information that enables multi-band communication -Beacon # 1.1: Information indicating whether or not the first frequency band can be used during multi-band communication-Beacon # 1.2: Use the second frequency band during multi-band communication Information indicating whether or not
- information on a frequency band capable of multi-band communication may be set in the MBMC field of the beacon.
- Information on a frequency band capable of multi-channel communication may be set in the MBMC field of the beacon.
- the frequency band information capable of multi-channel communication may include specific channel information.
- information on channels capable of multi-channel communication may be set as shown below.
- -Beacon # 1.1 Information indicating whether or not channel ch1 of the first frequency band can be used, information indicating whether or not channel ch2 of the first frequency band can be used, ..., First frequency band Information indicating whether or not the channel chn of
- a specific channel capable of multi-channel communication may be set in the MBMC field.
- Modification 2 In the second modification, a wireless communication system including beacons having different SSIDs among a plurality of beacons will be described.
- FIG. 7 is a diagram showing a configuration example of the wireless communication system according to the second modification of the first embodiment.
- the same parts as those in FIG. 2 are designated by the same reference numerals.
- the AP1a in FIG. 7 transmits beacons in the first frequency band, the second frequency band, and the third frequency band.
- the first frequency band is, for example, a 5 GHz band.
- the second frequency band is, for example, a 6 GHz band.
- the third frequency band is, for example, a 2.4 GHz band.
- the SSID of the beacon # 1.1 and the SSID of the beacon # 1.2 are made the same.
- SSID # A is set for the SSID of beacon # 1.1 and the SSID of beacon # 1.2.
- SSID # B is set for the SSID of beacon # 1.3 in the third frequency band in which band steering is not executed.
- the SA of the beacon # 1.1 and the SA of the beacon # 1.2 are set to be the same. That is, the MAC address (BSSID) in Beacon # 1.1 and the MAC address (BSSID) in Beacon # 1.2 are set to be the same.
- the MAC address #a is set in the SA of the beacon # 1.1 and the SA of the beacon # 1.2.
- the MAC address # b is set in the SA of the beacon # 1.3 in the third frequency band in which the band steering is not executed.
- the beacon frame of beacon # 1.1 and beacon # 1.2 is provided with the MBMC feel described in the first embodiment or the modification 1 of the first embodiment.
- the wireless communication system shown in FIG. 7 can perform communication based on either band steering or multi-band / multi-channel in the first frequency band and the second frequency band.
- the terminals 2a to 2c When the terminals 2a to 2c acquire the SSID of the beacon # 1.3 in the third frequency band, the terminals 2a to 2c communicate with the AP1a using one third frequency band.
- multi-band multi-channel can be executed even when band steering is not executed.
- FIG. 8 is a diagram showing a configuration example of a wireless LAN wireless communication system according to the second embodiment.
- the same parts as those in FIG. 2 are designated by the same reference numerals.
- the AP1a in FIG. 8 transmits beacons in the first frequency band and the second frequency band.
- the first frequency band is, for example, a 5 GHz band.
- the second frequency band is, for example, a 6 GHz band.
- the SSID of the beacon # 1.1 and the SSID of the beacon # 1.2 are different.
- the SSID of Beacon # 1.1 is set to SSID # A and the SSID of Beacon # 1.2 is set to SSID # B.
- the MAC address (BSSID) of AP1a in the first frequency band and the MAC address (BSSID) of AP1a in the second frequency band may be the same or different.
- the MAC addresses are different will be described as an example.
- the SA of the beacon # 1.1 is set with the MAC address # a
- the SA of the beacon # 1.2 is set with the MAC address # b.
- AP1a sets a multi-band multi-channel SSID in the extended field of the beacon frame in order to execute multi-band multi-channel under the condition that band steering is not executed. That is, it is assumed that the beacon frame is provided with a field for setting (description) an SSID capable of multi-band and multi-channel. As an example, assume that this field is an extended field.
- the extended field may be referred to as the MBMC field.
- the MBMC field may have a fixed length or a variable length.
- FIG. 9A is a diagram showing a configuration example of the beacon frame of Beacon # 1.1.
- FIG. 9B is a diagram showing a configuration example of a beacon frame of beacon # 1.2. As shown in FIGS. 9A and 9B, the SA, BSSID, and SSID of Beacon # 1.1 are different from the SA, BSSID, and SSID of Beacon # 1.2.
- the Beacon frame options of Beacon # 1.1 and Beacon # 1.2 are provided with MBMC fields.
- the MBMC field an SSID capable of multi-band and multi-channel is set.
- the MBMC field may be arranged, for example, in the optional portion of the beacon frame and is not limited to the positions shown in FIGS. 9A and 9B.
- SSID # B capable of multi-band is set in the MBMC field of Beacon # 1.1. That is, SSID # B set in Beacon # 1.2 is set in the MBMC field of Beacon # 1.1.
- SSID # A capable of multi-band is set in the MBMC field of Beacon # 1.2. That is, the SSID # A set in Beacon # 1.1 is set in the MBMC field of Beacon # 1.2.
- a multi-band / multi-channel compatible terminal When a multi-band / multi-channel compatible terminal receives Beacon # 1.1, it refers to the MBMC field of Beacon # 1.1.
- the multi-band / multi-channel compatible terminal determines (acquires) the second frequency band of the beacon # 1.2 as a multi-band capable frequency band based on the SSID # B of the MBMC field. That is, the multi-band / multi-channel compatible terminal sets the first frequency band of the received beacon # 1.1 and the second frequency band of the beacon # 1.2 in the SSID # B set in the MBMC field. Use to perform multi-band communication.
- a multi-band / multi-channel compatible terminal When a multi-band / multi-channel compatible terminal receives Beacon # 1.2, it refers to the MBMC field of Beacon # 1.2.
- the multi-band / multi-channel compatible terminal determines (acquires) the first frequency band of the beacon # 1.1 as a multi-band capable frequency band based on the SSID # A of the MBMC field. That is, the multi-band / multi-channel compatible terminal sets the second frequency band of the received beacon # 1.2 and the first frequency band of the beacon # 1.1 in the SSID #A set in the MBMC field. Use to perform multi-band communication.
- Legacy terminals do not refer to the MBMC fields of Beacon # 1.1 and Beacon # 1.2.
- the legacy terminal uses the SSID of the beacon # 1.1 in the first frequency band and the SSID of the beacon # 1.2 in the second frequency band, and the frequency band of the beacon that has acquired the SSID to be used with AP1a. connect.
- Information indicating that the MBMC field is invalid may be set in the MBMC field.
- the MBMC may be set to all 0 or all 1.
- the AP sets a multi-band SSID in the MBMC field of the beacon frame.
- the AP wirelessly transmits a beacon frame in which a multi-band SSID is set to the terminal.
- the terminal receives the beacon frame in which the SSID is set in the MBMC field.
- the terminal executes multi-band multi-channel communication based on the SSID set in the MBMC field.
- the AP and the terminal can obtain the effect of being able to execute multi-band and multi-channel.
- Modification example 1 Although it is said that a multi-band capable SSID is set in the MBMC field, a multi-band capable BSSID may be set.
- the MAC address # b may be set in the beacon # 1.1 as a BSSID capable of multi-banding. Further, the MAC address #a may be set in the beacon # 1.2 as a BSSID capable of multi-banding.
- the wireless communication system can perform multi-band communication even if BSSID is used.
- multi-band communication and multi-channel communication may be used together.
- the wireless communication system may execute multi-channel communication in the first frequency band and perform multi-band communication in the first frequency band and the second frequency band.
- the AP may transmit beacon # 1.1 with the first frequency band as the primary channel.
- the AP may transmit the beacon # 1.2 with the second frequency band as the secondary channel.
- Information on the second frequency band of the secondary channel is set in the MBMC field of Beacon # 1.1.
- the MBMC field may contain information on the channel position of the secondary channel.
- Information on the first frequency band of the primary channel may not be set in the MBMC field of Beacon # 1.2.
- the wireless communication system operates as follows.
- the terminal When the terminal connects to the AP by the second frequency band alone, the terminal starts communication based on the beacon # 1.2.
- the terminal When the terminal is connected by the first frequency band alone or starts multi-band communication by the first frequency band and the second frequency band, the terminal starts the communication based on the beacon # 1.1.
- the terminal grasps the position of the channel in the second frequency band from the information in the second frequency band of the secondary channel of Beacon # 1.1 and performs communication.
- a random MAC address may be adopted.
- the BSSID of the beacon is changed.
- the beacon frame may be provided with an extension field in which information indicating that the MAC address has been changed is stored. Information on the MAC address before the change of the MAC address may also be stored in this extended field.
- the terminal that communicates with the AP can obtain the effect that the AP can be identified from the MAC address before the change and the MAC address after the change.
- the AP may adopt a random MAC address according to the frequency band.
- the AP may adopt a random MAC address in the first frequency band and may not adopt a random MAC address in the second frequency band.
- a random MAC address here, the MAC address of the AP does not have to be changed randomly.
- the MAC address may be changed regularly, or the AP's MAC address may be changed from a device other than the AP.
- the MAC address may be specified. Therefore, it does not have to be called a random MAC address, that is, the name is not limited to this example.
- the AP may be referred to as a base station or communication device.
- the terminal may be referred to as a client or communication device.
- Beacons may be referred to as beacon signals.
- Beacon frames may be referred to as beacon signals.
- the functions of the AP and the terminal in each of the above embodiments may be realized by, for example, the following hardware.
- FIG. 10 is a diagram showing a hardware configuration example or a configuration example of a communication device.
- the communication device of FIG. 10 is an AP or a terminal.
- the communication device can communicate with one or more terminals.
- the communication device (AP or terminal) may transmit and receive a modulated signal based on, for example, the communication standard described in Non-Patent Document 1.
- FIG. 11 is a diagram showing an example of a modulated signal.
- the horizontal axis represents the frequency and the vertical axis represents the power of the modulated signal.
- the communication device of FIG. 10 transmits and receives a modulated signal of the first frequency band 201 which is the 5 GHz band as shown in FIG. 11, and a modulated signal of the second frequency band 202 which is the 6 (or 7) GHz band, for example. It is a device that transmits / receives and transmits / receives a modulated signal of a third frequency band 203 which is a 2.4 GHz band.
- the antenna 104_1, the antenna 105_1, and the transmission / reception device 102_1 transmit / receive the modulated signal of the first frequency band 201.
- the antenna 104_2, the antenna 105_2, and the transmission / reception device 102_2 transmit / receive the modulated signal of the second frequency band 202.
- the antenna 104_3, the antenna 105_3, and the transmission / reception device 102_3 transmit / receive the modulated signal of the third frequency band 203.
- the control unit 111 outputs the control signal 112 to the transmission data processing unit 107, the transmission / reception device 102_1, the transmission / reception device 102_2, and the transmission / reception device 102_3.
- the control unit 111 may be configured by, for example, a processor such as a CPU (Central Processing Unit) or a DSP (Digital Signal Processor).
- a signal 114 containing data is input to the interface unit 113. Further, the interface unit 113 outputs the data 109 to the transmission data processing unit 107. Further, the reception data group 110 output from the reception data processing unit 108 is input to the interface unit 113. The interface unit 113 outputs the signal 115 to a processing block (not shown).
- Data 109 is input to the transmission data processing unit 107. Further, the control signal 112 is input to the transmission data processing unit 107.
- the transmission data processing unit 107 outputs each of the first data 101_1, the second data 101_2, and the third data 101_3 to each of the transmission / reception device 102_1, the transmission / reception device 102_2, and the transmission / reception device 102_3 based on the control signal 112. ..
- the transmission data processing unit 107 when the AP transmits a modulated signal of the first frequency band 201, the transmission data processing unit 107 outputs the first data 101_1 to the transmission / reception device 102_1. When the AP transmits the modulated signal of the second frequency band 202, the transmission data processing unit 107 outputs the second data 101_2 to the transmission / reception device 102_2. When the AP transmits the modulated signal of the third frequency band 203, the transmission data processing unit 107 outputs the third data 101_3 to the transmission / reception device 102_3.
- the transmission data processing unit 107 is the first.
- the data 101_1, the second data 101_2, and the third data 101___ are output to the transmission / reception device 102_1, the transmission / reception device 102_2, and the transmission / reception device 102_3.
- the first data 101_1 is input to the transmission / reception device 102_1. Further, the control signal 112 is input to the transmission / reception device 102_1.
- the transmission / reception device 102_1 performs processing such as coding and mapping of an error correction code on the first data 101_1 based on information such as a transmission method, a modulation method, and an error correction coding method included in the control signal 112. Then, the first transmission signal 103_1 of the first frequency band 201 is generated and output to the antenna 104_1. The transmission signal 103_1 of the first modulated signal is output as a radio wave from the antenna 104_1.
- the second data 101_2 is input to the transmission / reception device 102_2. Further, the control signal 112 is input to the transmission / reception device 102_2.
- the transmission / reception device 102_2 performs processing such as coding and mapping of an error correction code on the second data 101_2 based on information such as a transmission method, a modulation method, and an error correction coding method included in the control signal 112. Then, the second transmission signal 103_2 of the second frequency band 202 is generated and output to the antenna 104_2. The transmission signal 103_2 of the second modulated signal is output as a radio wave from the antenna 104_2.
- the third data 101_3 is input to the transmission / reception device 102_3. Further, the control signal 112 is input to the transmission / reception device 102_3.
- the transmission / reception device 102_3 performs processing such as coding and mapping of an error correction code on the third data 101_3 based on information such as a transmission method, a modulation method, and an error correction coding method included in the control signal 112. Then, the third transmission signal 103_3 of the third frequency band 203 is generated and output to the antenna 104_3. The transmission signal 103_3 of the third modulated signal is output as a radio wave from the antenna 104_3.
- the antenna 104_1, the antenna 104_2, and the antenna 104_3 mean that one or a plurality of antennas are provided. When composed of a plurality of antennas, a plurality of modulated signals are transmitted, and the communication device can transmit MIMO (Multiple-Input Multiple-Output) or MISO (Multiple-Input Single-Output).
- MIMO Multiple-Input Multiple-Output
- MISO Multiple-Input Single-Output
- the antenna 105_1 When the antenna 105_1 receives the modulated signal of the first frequency band 201, the first received signal 199_1 is input to the transmission / reception device 102_1.
- the transmission / reception device 102_1 performs processing such as demodulation (demapping) and decoding of the error correction code on the first reception signal 199_1, and outputs the first data group 106_1 to the reception data processing unit 108.
- the antenna 105_2 When the antenna 105_2 receives the modulated signal of the second frequency band 202, the second received signal 199_2 is input to the transmission / reception device 102_2.
- the transmission / reception device 102_2 performs processing such as demodulation (demapping) and decoding of the error correction code on the second reception signal 199_2, and outputs the second data group 106_2 to the reception data processing unit 108.
- the third received signal 199_3 is input to the transmission / reception device 102_3.
- the transmission / reception device 102_3 performs processing such as demodulation (demapping) and decoding of the error correction code on the third reception signal 199_3, and outputs the third data group 106_3 to the reception data processing unit 108.
- the first data group 106_1, the second data group 106_2, and the third data group 106_3 are input to the received data processing unit 108.
- the reception data processing unit 108 outputs the reception data group 110 to the control unit 111 and the interface unit 113.
- the control unit 111 takes the received data group 110 as an input, determines one or more frequency bands for transmitting the modulated signal from the first frequency band, the second frequency band, and the third frequency band, and determines the determination information.
- the control signal 112 including the above is output. Further, the control unit 111 outputs a control signal 112 including information on a transmission method, a modulation method, and an error correction code coding method of each modulation signal to be transmitted.
- antennas 105_1, 105_2, and 105_3 mean that one or a plurality of antennas are provided.
- FIG. 12 is a diagram showing another hardware configuration example of the communication device.
- the same parts as those in FIG. 10 are designated by the same reference numerals.
- a portion for transmitting and receiving a third frequency band 203, which is a 2.4 GHz band, is omitted from the communication device of FIG.
- the communication device shown in FIG. 12 is a device corresponding to two frequency bands, for example, 5 GHz band and 6 GHz band, among 2.4 GHz band, 5 GHz band, and 6 GHz band.
- Band steering is likely to be performed when the communication device includes a portion for transmitting and receiving in the 2.4 GHz band. If the communication device does not include a portion for transmitting and receiving in the 2.4 GHz band, there is a high possibility that multi-band and multi-channel will be implemented.
- 13A-13D is an example when a communication device such as an AP or a terminal is performing multi-band communication, and shows an example of a frame of a modulated signal transmitted by the communication device.
- the vertical axis is time and the horizontal axis is frequency (carrier).
- Frame 500_1 indicates a frame configuration in the first frequency band
- frame 500_2 indicates a frame configuration in the second frequency band
- frame 500_3 indicates a frame configuration in the third frequency band.
- the data symbols 502_1, 502_2, and 502_3 are symbols for transmitting data.
- FIG. 13A shows an example of multi-band communication in which the data symbols 502-1 to 502_3 exist in the first frequency band, the second frequency band, and the third frequency band in the first time.
- FIG. 13B shows an example of multi-band communication in which the data symbols 502_1 and 502_3 exist in the first frequency band and the third frequency band in the first time.
- FIG. 13C shows an example of multi-band communication in which the data symbols 502_2 and 502_3 exist in the second frequency band and the third frequency band in the first time.
- FIG. 13D shows an example of multi-band communication in which the data symbols 502_1 and 502_2 exist in the first frequency band and the second frequency band in the first time.
- FIGS. 14A-14H is an example when a communication device such as an AP or a terminal is performing multi-band communication, and shows an example of a frame of a modulated signal transmitted by the communication device.
- the vertical axis is time and the horizontal axis is frequency (carrier).
- Frame 500_1 indicates a frame configuration in the first frequency band
- frame 500_2 indicates a frame configuration in the second frequency band
- frame 500_3 indicates a frame configuration in the third frequency band.
- the data symbols 502_1, 502_2, and 502_3 are symbols for transmitting data.
- the first fields 701_1 to 701_3 include, for example, symbols for the communication partner (terminal) of the AP to perform signal detection, time synchronization, frequency synchronization, channel estimation, and the like.
- the second fields 702_1 to 702_3 are, for example, fields for transmitting control information to the communication partner (terminal) of the AP, and information and modulation of an error correction code method for generating a symbol addressed to a certain terminal. Includes method information, transmission method information, and so on.
- the first fields 701_1 to 701_3 are present in the first frequency band, the second frequency band, and the third frequency band in the first time, and the first field is present in the second time.
- the second fields 702_1 to 702_3 exist, and in the third time, the first frequency band, the second frequency band, and the third frequency band are present.
- An example of multi-band communication in which the data symbols 502-1 to 502_3 exist in the frequency band of is shown.
- FIG. 14B shows an example of multi-band communication in which symbols exist in the first frequency band, the second frequency band, and the third frequency band in any time from the first time to the third time. Is shown. This is an example in which the temporal timing in which the existing symbol exists differs depending on the frequency band. However, the temporal timing at which the symbol exists is just an example, and is not limited to this.
- the first fields 701_1,701_3 exist in the first frequency band and the third frequency band in the first time, and the first frequency band and the third frequency band exist in the second time.
- An example of multi-band communication is shown in which the second field 702_1,702_3 is present in the frequency band and the data symbols 502_1,502_3 are present in the first and third frequency bands at the third time. ..
- FIG. 14D shows an example of multi-band communication in which symbols exist in the first frequency band and the third frequency band in any time from the first time to the third time. This is an example in which the temporal timing in which the existing symbol exists differs depending on the frequency band. However, the temporal timing at which the symbol exists is just an example, and is not limited to this.
- the first fields 701_2,701_3 are present in the second frequency band and the third frequency band, and in the second time, the second frequency band and the third frequency band are present.
- An example of multi-band communication is shown in which the second field 702_2,702_3 is present in the frequency band and the data symbol 502_2,502_3 is present in the second and third frequency bands at the third time. ..
- FIG. 14F shows an example of multi-band communication in which symbols exist in the second frequency band and the third frequency band in any time from the first time to the third time. This is an example in which the temporal timing in which the existing symbol exists differs depending on the frequency band. However, the temporal timing at which the symbol exists is just an example, and is not limited to this.
- the first fields 701_1,701_2 are present in the first frequency band and the second frequency band, and in the second time, the first frequency band and the second frequency band are present.
- An example of multi-band communication is shown in which the second field 702_1,702_2 is present in the frequency band and the data symbols 502_1,502_2 are present in the first and second frequency bands at the third time. ..
- FIG. 14H shows an example of multi-band communication in which symbols exist in the first frequency band and the second frequency band in any time from the first time to the third time. This is an example in which the temporal timing in which the existing symbol exists differs depending on the frequency band. However, the temporal timing at which the symbol exists is just an example, and is not limited to this.
- FIG. 15 is a diagram showing a configuration example of a transmission unit included in the transmission / reception devices 102_1 to 102_3 of FIG.
- the control signal 2000 is input to the error correction coding group 2002. Further, data 2001 is input to the error correction coding group 2002.
- the control signal 2000 includes information on an error correction coding method such as a code type, a code length, and a code rate.
- the error correction coding group 2002 performs error correction coding on the data 2001 based on the control signal 2000, and outputs the coded data group 2003 to the signal processing group 2004.
- the error correction coding group 2002 may include one or more error correction coding units.
- the coded data group 2003 is composed of data of one or more coded words.
- the control signal 2000 is input to the signal processing group 2004. Further, the coded data group 2003 is input to the signal processing group 2004.
- the signal processing group 2004 performs processing such as mapping (modulation), precoding, and interleaving based on the control signal 2000, and outputs the modulated signal group 2005 to the radio processing group 2006.
- the signal processing group 2004 when the signal processing group 2004 outputs one modulated signal, for example, it performs interleaving and mapping processing, and outputs one modulated signal as the modulated signal group 2005 to the wireless processing group 2006.
- the signal processing group 2004 When outputting a plurality of modulated signals, the signal processing group 2004 performs, for example, interleaving, mapping, and precoding if necessary, and outputs the plurality of modulated signals as the modulated signal group 2005 to the radio processing group 2006. ..
- the control signal 2000 is input to the wireless processing group 2006. Further, the modulation signal group 2005 is input to the radio processing group 2006.
- the radio processing group 2006 Based on the control signal 2000, the radio processing group 2006 performs processing such as generating an OFDM (Orthogonal Frequency Division Multiplexing) signal, orthogonal modulation, frequency conversion, and the like on the modulation signal group 2005, and transmits the transmission signal group 2007. Is output to the antenna.
- the transmission signal group 2007 is transmitted as radio waves from the antenna.
- OFDM may not be used, and a signal processing unit for a single carrier system may be provided.
- a single carrier method “DFT (Discrete Fourier Transform) -Spread OFDM (Orthogonal Frequency Division Multiplexing)", “Trajectory Constrained DFT-Spread OFDM”, “OFDM based SC (Single Carrier)", “SC (Single)” Carrier)-FDMA (Frequency Division Multiple Access) ",” Guard interval DFT-Spread OFDM ", etc.
- the radio processing group 2006 generates a transmission signal group 2007 of N transmission signals when the modulation signal group 2005 is composed of N modulation signals.
- N is an integer of 1 or more.
- the transmission signal group 2007 is composed of a plurality of transmission signals
- the transmission signal group 2007 is transmitted as a radio wave using a plurality of antennas.
- MIMO transmission is used, a plurality of modulated signals are transmitted at the same frequency and at the same time.
- FIG. 16 is a diagram showing a configuration example of a receiving unit included in the transmission / reception devices 102_1 to 102_3 of FIG.
- the control signal 2050 is input to the wireless processing group 2052. Further, the received signal group 2051 is input to the wireless processing group 2052.
- the radio processing group 2052 performs processing for frequency conversion, orthogonal demodulation, and OFDM on the received signal group 2051 based on the control signal 2050, and outputs the baseband signal group 2053 to the signal processing group 2054.
- OFDM may not be used, and a signal processing unit for a single carrier system may be provided.
- a single carrier method “DFT (Discrete Fourier Transform) -Spread OFDM (Orthogonal Frequency Division Multiplexing)", “Trajectory Constrained DFT-Spread OFDM”, “OFDM based SC (Single Carrier)", “SC (Single)” Carrier)-FDMA (Frequency Division Multiple Access) ",” Guard interval DFT-Spread OFDM ", etc.
- the received signal group 2051 may be composed of one or more received signals, and the baseband signal group 2053 may be composed of one or more baseband signals.
- the control signal 2050 is input to the signal processing group 2054. Further, the baseband signal group 2053 is input to the signal processing group 2054.
- the signal processing group 2054 Based on the control signal 2050, the signal processing group 2054 performs signal detection, time synchronization, frequency synchronization, frequency offset estimation, channel estimation, and the like on the baseband signal group 2053, and demapping the baseband signal group 2053.
- the frequency 2055 is output to the error correction code decoding group 2056.
- the control signal 2050 is input to the error correction code decoding group 2056. Further, the likelihood 2055 of the reception bit is input to the error correction code decoding group 2056.
- the error correction code decoding group 2056 decodes the error correction code with respect to the likelihood 2055 of the reception bit based on the information of the error correction coding method included in the control signal 2050, and outputs the received data 2057.
- FIG. 17 is a diagram illustrating an example of multi-channel communication. (1) and (2) shown in FIG. 17 show an example of the bandwidth used by, for example, an AP (or a terminal) when transmitting a modulated signal using a third frequency band.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 20 MHz.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 40 MHz.
- the AP may channel bond the frequency bands of 20 MHz and 40 MHz when transmitting the modulated signal using the third frequency band.
- the frequency bands shown in FIGS. 17 (1) and (2) are merely examples.
- FIG. 18 is a diagram illustrating an example of multi-channel communication.
- the AP or terminal
- the AP is modulated using the first frequency band and / or the second frequency band.
- An example of the frequency band used when transmitting a signal is shown.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 20 MHz.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 40 MHz.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 80 MHz.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 160 MHz.
- the AP When transmitting a modulated signal using the first frequency band and / or the second frequency band, the AP (or terminal) has two or more of the 20 MHz, 40 MHz, 80 MHz, and 160 MHz frequency bands.
- the frequency band of may be channel bonded. Note that (1), (2), (3) and (4) in FIG. 18 are merely examples.
- FIG. 19 is a diagram illustrating an example of multi-channel communication.
- (1), (2) and (3) shown in FIG. 19 show an example of a frequency band used by, for example, an AP (or a terminal) when transmitting a modulated signal using the second frequency band. ..
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 80 MHz.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 160 MHz.
- the horizontal axis is frequency and the vertical axis is time.
- the transmission symbol 2101 indicates a symbol included in the modulated signal.
- the bandwidth of the transmission symbol 2101 is 320 MHz.
- the AP When transmitting a modulated signal using the second frequency band, the AP (or terminal) may channel bond two or more frequency bands among the 80 MHz, 160 MHz, and 320 MHz frequency bands. Note that (1), (2), and (3) in FIG. 19 are merely examples.
- FIG. 20 is a diagram showing a configuration example of a data frame.
- the numerical values in FIG. 20 indicate the data lengths of the fields described below, and the unit is bytes.
- the data frame includes, for example:
- Table 1 shows the usage of the address field of the data frame.
- IBSS Independent Basic Service Set
- AP Access Point
- WDS Wireless Distribution System
- DS Distribution System
- BSSID Basic Service Set ID (ID: identifier).
- DA is the destination address (DestinationAddress)
- SA is the source address (SourceAddress)
- RA is the receiver address (ReceiverAddress)
- TA is the transmitter address (TransmitterAddress).
- FIG. 20 is just an example of a data frame, and the data frame is not limited to this configuration.
- BSSID and SSID Service Set ID
- BSSID In infrastructure networks, the BSSID is the MAC address of the access point's wireless interface. In ad hoc networks, BSSIDs are randomly generated and the Universal / Local bit is set to 1.
- SSID Identifiers larger than normal 48-bit identifiers (0 to 32 bytes)
- FIG. 21 is a diagram showing a configuration example of a probe request frame.
- the numerical values in FIG. 21 indicate the data lengths of the fields described below, and the unit is bytes.
- the Probe request frame includes, for example, the following.
- the Probe request frame also includes:
- the above is the frame body.
- the Probe request frame also includes:
- DA is the MAC address of the AP
- SA and “BSSID” are included in the MAC address of the terminal.
- SSID is the SSID of the AP.
- FIG. 22 is a diagram showing a configuration example of a probe response frame.
- the numerical values in FIG. 22 indicate the data lengths of the fields described below, and the unit is bytes.
- the Probe response frame includes, for example, the following.
- the Probe response frame also includes:
- DA is the MAC address of the terminal
- SA and “BSSID” are included in the MAC address of the AP.
- SSID is the SSID of the AP.
- FIG. 23 is a diagram showing a configuration example of the Association request frame.
- the numerical value in FIG. 23 indicates the data length of the field described below, and the unit is bytes.
- the Association request frame includes, for example, the following.
- the Association request frame also includes:
- the above is the frame body.
- the Association request frame also includes:
- DA is the MAC address of the AP
- SA and “BSSID” constitute the MAC address of the terminal.
- SSID is the SSID of the AP.
- FIG. 24 is a diagram showing a configuration example of the Association response frame.
- the numerical values in FIG. 24 indicate the data lengths of the fields described below, and the unit is bytes.
- the Association response frame includes, for example, the following.
- the Association response frame also includes:
- the above is the frame body.
- the Association response frame also includes:
- DA is the MAC address of the terminal
- SA and “BSSID” are included in the MAC address of the AP.
- the transmission / reception device 102_1, the transmission / reception device 102_2, and the transmission / reception device 102_3 may be referred to as a communication unit.
- the transmission / reception device 102_1, the transmission / reception device 102_2, the transmission / reception device 102_3, the transmission data processing unit 107, and the reception data processing unit 108 may be referred to as a communication unit.
- the transmission / reception device 102_1 and the transmission / reception device 102_2 may be referred to as a communication unit.
- the transmission / reception device 102_1, the transmission / reception device 102_2, the transmission data processing unit 107, and the reception data processing unit 108 may be referred to as a communication unit.
- the control unit 111 sets information regarding at least one of multi-band and multi-channel in the MBMC field of the beacon frame.
- the communication unit wirelessly transmits a beacon frame in which the information is set in the MBMC field to the terminal by the control unit 111.
- the communication unit receives a beacon frame in which information regarding at least one of multi-band and multi-channel is set in the MBMC field of the beacon frame.
- the control unit 111 executes communication based on at least one of multi-band and multi-channel based on the information set in the beacon frame.
- the notation "... part” used for each component is “... circuitry”, “... device”, “... unit”, or “... unit”. It may be replaced with another notation such as "... module”.
- each embodiment and other contents are merely examples, and for example, "modulation method, error correction coding method (error correction code to be used, code length, coding rate, etc.), control information, etc.” Even if it is illustrated, the same configuration can be implemented even when another "modulation method, error correction coding method (error correction code to be used, code length, coding rate, etc.), control information, etc.” is applied. It is possible.
- APSK Amplitude Phase Shift Keying
- PAM PulseAmplitude Modulation
- PSK Phase Shift Keying
- QAM Quadrature Amplitude Modulation
- a modulation method having 64, 128, 256, 1024, and the like signal points) is not particularly limited in the present specification. Therefore, the function of outputting in-phase components and orthogonal components based on a plurality of bits is a function of the mapping unit, and then precoding and phase change are one of the effective functions of the present disclosure.
- a complex plane If a complex plane is used, it can be displayed in polar form as a display in polar coordinates of complex numbers.
- ), and ⁇ is the argument. Then, z a + jb is expressed as r ⁇ e j ⁇ .
- the receiving device of the terminal and the antenna may be separately configured.
- the receiving device is provided with an interface for inputting a signal received by the antenna or a signal that has undergone frequency conversion to the signal received by the antenna through a cable, and the receiving device performs subsequent processing. ..
- the data / information obtained by the receiving device is then converted into video and sound, which is displayed on a display (monitor) or output from a speaker.
- the data / information obtained by the receiving device is subjected to signal processing related to video and sound (signal processing does not have to be performed), and the RCA terminal (video terminal, sound terminal) provided in the receiving device, USB ( Universal Serial Bus), HDMI (registered trademark: High-Definition Multimedia Interface), digital terminals, etc. may be output.
- signal processing related to video and sound
- RCA terminal video terminal, sound terminal
- USB Universal Serial Bus
- HDMI registered trademark: High-Definition Multimedia Interface
- digital terminals etc.
- the transmitter and / or the transmitter is provided, for example, with a broadcasting station, a base station, an access point, a terminal, a mobile phone, a smartphone, a tablet, a laptop computer, a server, and a personal computer.
- a broadcasting station for example, with a broadcasting station, a base station, an access point, a terminal, a mobile phone, a smartphone, a tablet, a laptop computer, a server, and a personal computer.
- Personal computers TVs, home appliances (household electrical appliances), equipment in factories, communication equipment / broadcasting equipment such as IoT (Internet of Things) equipment, gNB (gNodeB), repeaters, nodes, cars, bicycles , Bikes, ships, satellites, aircraft, drones, mobile devices, robots, at which time the receiver and / or receiver is equipped with a radio, terminal, personal computer.
- IoT Internet of Things
- gNB gNodeB
- repeaters nodes, cars, bicycles , Bikes,
- Mobile phones, access points, communication devices such as base stations, smartphones, tablets, laptop computers, servers, personal computers, personal computers, televisions, home appliances (household electrical appliances), equipment in factories, IoT (Internet of Things)
- Communication equipment / broadcasting equipment such as equipment, gNB (gNodeB), repeaters, nodes, cars, bicycles, bikes, ships, satellites, aircraft, drones, movable equipment, robots, etc.
- the transmitting device and the receiving device in the present disclosure are devices having a communication function, and the devices provide some kind of interface to a device for executing an application such as a television, a radio, a personal computer, and a mobile phone. It is also conceivable that the form can be connected by disconnecting.
- the communication devices in the present specification include, for example, broadcasting stations, base stations, access points, terminals, mobile phones, smartphones, tablets, laptop computers, servers, personal computers, personal computers, televisions, home appliances ( Household electrical appliances), equipment in factories, communication equipment / broadcasting equipment such as IoT (Internet of Things) equipment, gNB (gNodeB), repeaters, nodes, cars, bicycles, bikes, ships, satellites, aircraft , Drones, mobile devices, robots.
- IoT Internet of Things
- gNB gNodeB
- Drones mobile devices, robots.
- symbols other than data symbols for example, reference signals (preambles, unique words, postambles, reference symbols, pilot symbols, pilot signals, etc.), control information symbols, sector sweeps, and the like are frames. It may be arranged in any way.
- the reference signal may be known, for example, by a known symbol modulated using PSK modulation in the transmitter / receiver (or by synchronizing the receiver, the receiver may know the symbol transmitted by the transmitter. ), Non-zero power signals, zero power signals, signals known in transmitters and receivers, etc., and the receiver uses these signals for frequency synchronization, time synchronization, and channels (of each modulated signal). Estimates (estimation of CSI (Channel State Information)), signal detection, reception state estimation, transmission state estimation, and the like are performed.
- CSI Channel State Information
- the symbol for control information is information that needs to be transmitted to the communication partner (for example, the modulation method used for communication, the error correction coding method, etc.) in order to realize communication other than data (application, etc.). Coding rate of error correction coding method, setting information in upper layer, MCS (Modulation and Coding Scheme), frame configuration, channel information, frequency band information used, number of channels used, etc.) It is a symbol for transmitting.
- MIMO MIMO, SISO, spatio-temporal block code, interleave method, MCS), modulation method, and error correction coding method.
- MIMO MIMO, SISO, spatio-temporal block code, interleave method, MCS
- modulation method and error correction coding method.
- error correction coding method error correction coding method
- one antenna described in the drawings may be composed of one antenna or a plurality of antennas.
- the transmitting antenna and the receiving antenna may be described separately, but the configuration may be a “transmission / reception antenna” in which the transmitting antenna and the receiving antenna are shared. ..
- the transmitting antenna, the receiving antenna, and the transmitting / receiving antenna may be referred to as, for example, an antenna port.
- the antenna port may be a logical antenna (antenna group) composed of one or a plurality of physical antennas. That is, the antenna port does not necessarily refer to one physical antenna, but may refer to an array antenna or the like composed of a plurality of antennas. For example, the number of physical antennas that an antenna port is composed of is not specified, and may be specified as the minimum unit that a terminal station can transmit a reference signal (reference signal). Further, the antenna port may be defined as a precoding vector, a unit for multiplying the weighting of the precoding matrix, or a minimum unit.
- the single carrier method may be used.
- DFT Discrete Fourier Transform
- Spread OFDM Orthogonal Frequency Division Multiplexing
- SC Single Carrier
- DMA Frequency Division Multiple Access
- Gurd interval DFT-Spread OFDM time-domain implementation single carrier method
- the server provides an application related to processing related to the receiving device and the receiving unit, and the terminal may realize the function of the receiving device described in the present specification by installing this application.
- the application may be provided to the terminal by connecting the communication device provided with the transmission device described in the present specification to the server via the network, and the application may be provided by a communication device having another transmission function. It may be provided to the terminal by connecting to the server via a network.
- the server provides an application related to the transmission device and the processing related to the transmission unit, and the communication device realizes the function of the transmission device described in the present specification by installing this application. You may. It is conceivable that the application is provided to this communication device by connecting the application to the server via the network.
- a program that executes the above communication method may be stored in ROM (Read Only Memory) in advance, and the program may be operated by the CPU.
- ROM Read Only Memory
- the program that executes the above communication method is stored in a storage medium that can be read by a computer, the program stored in the storage medium is recorded in the RAM (Random Access Memory) of the computer, and the computer is operated according to the program. You may do so.
- each configuration such as each of the above-described embodiments may be realized as an LSI (Large Scale Integration), which is typically an integrated circuit. These may be individually integrated into one chip, or may be integrated into one chip so as to include all or a part of the configurations of each embodiment. Although it is referred to as an LSI here, it may be referred to as an IC (Integrated Circuit), a system LSI, a super LSI, or an ultra LSI depending on the degree of integration. Further, the method of making an integrated circuit is not limited to the LSI, and may be realized by a dedicated circuit or a general-purpose processor. An FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connection and settings of circuit cells inside the LSI may be used.
- LSI Large Scale Integration
- At least one of the FPGA and the CPU may be configured so that all or part of the software necessary for realizing the communication method described in the present disclosure can be downloaded by wireless communication or wired communication.
- the software for updating may be configured so that all or part of the software can be downloaded by wireless communication or wired communication.
- the downloaded software may be stored in the storage unit, and at least one of the FPGA and the CPU may be operated based on the stored software to execute the digital signal processing described in the present disclosure.
- a device including at least one of the FPGA and the CPU may be connected to the communication modem wirelessly or by wire, and the communication method described in the present disclosure may be realized by the device and the communication modem.
- a communication device such as a base station, an AP, or a terminal described in the present specification includes at least one of an FPGA and a CPU, and externally installs software for operating at least one of the FPGA and the CPU.
- the communication device may be provided with an interface for obtaining from.
- the communication device is provided with a storage unit for storing software obtained from the outside, and the FPGA and the CPU are operated based on the stored software to realize the signal processing described in the present disclosure. You may.
- Each functional block used in the description of the above embodiment is partially or wholly realized as an LSI which is an integrated circuit, and each process described in the above embodiment is partially or wholly. It may be controlled by one LSI or a combination of LSIs.
- the LSI may be composed of individual chips, or may be composed of one chip so as to include a part or all of functional blocks.
- the LSI may include data input and output.
- LSIs may be referred to as ICs, system LSIs, super LSIs, and ultra LSIs depending on the degree of integration.
- the method of making an integrated circuit is not limited to LSI, and may be realized by a dedicated circuit, a general-purpose processor, or a dedicated processor. Further, an FPGA that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connection and setting of the circuit cells inside the LSI may be used.
- the present disclosure may be realized as digital processing or analog processing.
- Non-limiting examples of communication devices include telephones (mobile phones, smartphones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital stills / video cameras, etc.). ), Digital players (digital audio / video players, etc.), wearable devices (wearable cameras, smart watches, tracking devices, etc.), game consoles, digital book readers, telehealth telemedicines (remote health) Care / medicine prescription) devices, vehicles with communication functions or mobile transportation (automobiles, airplanes, ships, etc.), and combinations of the various devices described above can be mentioned.
- communication devices include telephones (mobile phones, smartphones, etc.), tablets, personal computers (PCs) (laptops, desktops, notebooks, etc.), cameras (digital stills / video cameras, etc.). ), Digital players (digital audio / video players, etc.), wearable devices (wearable cameras, smart watches, tracking devices, etc.), game consoles, digital book readers, telehealth telemedicines (remote health
- Communication devices are not limited to those that are portable or mobile, but are not portable or fixed, any type of device, device, system, such as a smart home device (home appliances, lighting equipment, smart meters or Includes measuring instruments, control panels, etc.), vending machines, and any other "Things” that can exist on the IoT (Internet of Things) network.
- a smart home device home appliances, lighting equipment, smart meters or Includes measuring instruments, control panels, etc.
- vending machines and any other "Things” that can exist on the IoT (Internet of Things) network.
- Communication includes data communication using a combination of these, in addition to data communication using a cellular system, wireless LAN system, communication satellite system, etc.
- the communication device also includes a device such as a controller or a sensor that is connected or connected to a communication device that executes the communication function described in the present disclosure.
- a device such as a controller or a sensor that is connected or connected to a communication device that executes the communication function described in the present disclosure.
- it includes controllers and sensors that generate control and data signals used by communication devices that perform the communication functions of the communication device.
- Communication devices also include infrastructure equipment that communicates with or controls these non-limiting devices, such as base stations, access points, and any other device, device, or system. ..
- the beacon signal may be used as follows.
- the first communication device may transmit the beacon signal
- the second communication device different from the first communication device may receive the beacon signal to perform LBT (Listen before Talk).
- the beacon signal can be called a signal for carrying out LBT.
- the communication device includes a control unit for setting information regarding at least one of multiband and multichannel in an extended field of a beacon signal, and a communication unit for transmitting the beacon signal.
- the beacon signal may be transmitted using the first frequency band and the second frequency band.
- control unit has a common SSID (SSID) in the extended field in the beacon signal of the first frequency band and the extended field in the beacon signal of the second frequency band.
- SSID common SSID
- Service Set Identifier may be set.
- control unit has a common MAC for the extended field in the beacon signal in the first frequency band and the extended field in the beacon signal in the second frequency band.
- a Media Access Control) address or a common BSSID (Basic Service Set identifier) may be set.
- control unit may set information regarding the possibility of communication based on at least one of multi-band and multi-channel in the extended field.
- control unit may set at least one of information on a frequency band capable of multi-band communication and information on a frequency band capable of multi-channel communication in the extended field.
- control unit may set an SSID or BSSID capable of multi-band communication in the extended field.
- the communication device includes a communication unit that receives the beacon signal in which information regarding at least one of multiband and multichannel is set in the extended field of the beacon signal, and the multiband and multichannel based on the information. It has a control unit that executes communication based on at least one of the above.
- information regarding at least one of multi-band and multi-channel is set in the extended field of the beacon signal, and the beacon signal is transmitted.
- the communication method of the communication device receives the beacon signal in which information regarding at least one of multiband and multichannel is set in the extended field of the beacon signal, and based on the information, multiband and multichannel. Perform communication based on at least one of.
- This disclosure is useful for wireless LAN wireless communication systems.
Abstract
Description
無線LANのSSID(Service Set Identifier)は、2.4GHz帯と5GHz帯とにおいて異なっていてもよいが、バンドステアリングの場合は同じ(共通)であってもよい。また、アクセスポイントのMAC(Media Access Control)アドレスは、2.4GHz帯と5GHz帯とにおいて異なっていてもよいが、バンドステアリングの場合は同じ(共通)であってもよい。
・2バイトのデュレーション(フィールド)
・6バイトのDA(Destination Address)(宛先アドレス)(フィールド)
・6バイトのSA(Source Address)(送信元アドレス)(フィールド)
・6バイトのBSSID(フィールド)
・2バイトのシーケンス制御(フィールド)
・可変長の国(フィールド)
ビーコンのMBMCフィールドには、マルチバンド通信が可能な周波数帯の情報が含まれてもよい。ビーコンのMBMCフィールドには、マルチチャネル通信が可能な周波数帯の情報が含まれてもよい。
・ビーコン#1.2:第1の周波数帯
・ビーコン#1.3:マルチバンド不可
・ビーコン#1.2:第2の周波数帯においてマルチチャネル通信が可能か否かを示す情報
・ビーコン#1.3:第3の周波数帯においてマルチチャネル通信が可能か否かを示す情報
・ビーコン#1.2:第1の周波数帯の情報と、第3の周波数帯の情報
・ビーコン#1.3:第1の周波数帯の情報と、第2の周波数帯の情報
・ビーコン#1.1:マルチバンド通信時、第1の周波数帯を使用することが可能か否かを示す情報
・ビーコン#1.2:マルチバンド通信時、第2の周波数帯を使用することが可能か否かを示す情報
・ビーコン#1.3:マルチバンド通信時、第3の周波数帯を使用することが可能か否かを示す情報
・ビーコン#1.1:第1の周波数帯においてマルチチャネル通信が可能か否かを示す情報
・ビーコン#1.2:第2の周波数帯においてマルチチャネル通信が可能か否かを示す情報
・ビーコン#1.3:第3の周波数帯においてマルチチャネル通信が可能か否かを示す情報
・ビーコン#1.1:第1の周波数帯においてマルチチャネルが可能か否かを示す情報
・ビーコン#1.2:第2の周波数帯においてマルチチャネルが可能か否かを示す情報
・ビーコン#1.1:マルチバンド通信時、第1の周波数帯を使用することが可能か否かを示す情報
・ビーコン#1.2:マルチバンド通信時、第2の周波数帯を使用することが可能か否かを示す情報
変形例2では、複数のビーコンのうち、異なるSSIDを持つビーコンが含まれる無線通信システムについて説明する。
第2の実施の形態では、バンドステアリングを実行しない場合でも、マルチバンド・マルチチャネルを実行できるようにする。
MBMCフィールドには、マルチバンド可能なSSIDが設定されるとしたが、マルチバンド可能なBSSIDが設定されてもよい。
・2バイトのデュレーションID(ID: Identifier)(フィールド)
・6バイトの(受信機の)アドレス1(フィールド)
・6バイトの(送信機の)アドレス2(フィールド)
・6バイトの(フィルタリング)アドレス3(フィールド)
・2バイトのシーケンス制御(フィールド)
・6バイトの(オプション)アドレス4(フィールド)
・フレーム本体
・4バイトのFCS(Frame Check Sequence)(フィールド)
インフラストラクチャネットワークでは、BSSIDは、アクセスポイントの無線インターフェースのMACアドレスである。アドホックネットワークでは、BSSIDをランダムに生成し、Universal/Localビットを1にする。
通常の48ビットの識別子よりも、大きな識別子(0から32バイト)
・2バイトのデュレーション(フィールド)
・6バイトのDA(宛先アドレス)(フィールド)
・6バイトのSA(送信元アドレス)(フィールド)
・6バイトのBSSID(フィールド)
・2バイトのシーケンス制御(フィールド)
・可変長のサポートレート(フィールド)
・2バイトのデュレーション(フィールド)
・6バイトのDA(宛先アドレス)(フィールド)
・6バイトのSA(送信元アドレス)(フィールド)
・6バイトのBSSID(フィールド)
・2バイトのシーケンス制御(フィールド)
・4バイトのFCS(Frame Check Sequence)(フィールド)
・8バイトのタイムスタンプ(フィールド)
・2バイトのビーコン間隔(フィールド)
・2バイトのケーパビリティ(Capability)情報(フィールド)
・可変長のSSID(フィールド)
・7バイトのFH(Frequency Hopping)パラメータセット(フィールド)
・2バイトのDS(Direct Sequence)パラメータセット(フィールド)
・8バイトのCF(Contention Free)パラメータセット(フィールド)
・4バイトのBSSIDパラメータセット(フィールド)
・可変長の国(フィールド)
・4バイトのFHホッピングパラメータ(フィールド)
・FHパターンテーブル(フィールド)
・3バイトの電力制限(フィールド)
・6バイトの可変長チャネル切り替え(フィールド)
・8バイトのクワィエット(フィールド)
・可変長のIBSS DFS(フィールド)
・4バイトのTPC(Transmit Power Control)レポート(フィールド)
・可変長のERP(Effective Radiated Power)(フィールド)
・可変長の拡張サポートレート(フィールド)
・可変長のRSN(Robust Security Network)(フィールド)
・2バイトのデュレーション(フィールド)
・6バイトのDA(宛先アドレス)(フィールド)
・6バイトのSA(送信元アドレス)(フィールド)
・6バイトのBSSID(フィールド)
・2バイトのシーケンス制御(フィールド)
・2バイトのリッスン間隔(フィールド)
・可変長のSSID(フィールド)
・可変長のサポートレート(フィールド)
・2バイトのデュレーション(フィールド)
・6バイトのDA(宛先アドレス)(フィールド)
・6バイトのSA(送信元アドレス)(フィールド)
・6バイトのBSSID(フィールド)
・2バイトのシーケンス制御(フィールド)
・2バイトの状態コード(フィールド)
・2バイトのアソシエーション識別子(フィールド)
・可変長のサポートレート(フィールド)
当然であるが、本明細書において説明した実施の形態、その他の内容を複数組み合わせて、実施してもよい。
本開示に係る通信装置は、ビーコン信号の拡張フィールドに、マルチバンドおよびマルチチャネルの少なくとも一方に関する情報を設定する制御部と、前記ビーコン信号を送信する通信部と、を有する。
2a~2c 端末
Claims (10)
- ビーコン信号の拡張フィールドに、マルチバンドおよびマルチチャネルの少なくとも一方に関する情報を設定する制御部と、
前記ビーコン信号を送信する通信部と、
を有する通信装置。 - 前記通信部は、前記ビーコン信号を第1の周波数帯と第2の周波数帯とを用いて送信する、
請求項1に記載の通信装置。 - 前記制御部は、前記第1の周波数帯の前記ビーコン信号における前記拡張フィールドと、前記第2の周波数帯の前記ビーコン信号における前記拡張フィールドとに、共通のSSID(Service Set Identifier)を設定する、
請求項2に記載の通信装置。 - 前記制御部は、前記第1の周波数帯の前記ビーコン信号における前記拡張フィールドと、前記第2の周波数帯の前記ビーコン信号における前記拡張フィールドとに、共通のMAC(Media Access Control)アドレスまたは共通のBSSID(Basic Service Set identifier)を設定する、
請求項2に記載の通信装置。 - 前記制御部は、前記拡張フィールドに、マルチバンドおよびマルチチャネルの少なくとも一方に基づく通信の可否に関する情報を設定する、
請求項1に記載の通信装置。 - 前記制御部は、前記拡張フィールドに、マルチバンド通信可能な周波数帯の情報およびマルチチャネル通信可能な周波数帯の情報の少なくとも一方を設定する、
請求項1に記載の通信装置。 - 前記制御部は、前記拡張フィールドに、マルチバンド通信可能なSSIDまたはBSSIDを設定する、
請求項1に記載の通信装置。 - ビーコン信号の拡張フィールドに、マルチバンドおよびマルチチャネルの少なくとも一方に関する情報が設定された前記ビーコン信号を受信する通信部と、
前記情報に基づいて、マルチバンドおよびマルチチャネルの少なくとも一方に基づく通信を実行する制御部と、
を有する通信装置。 - ビーコン信号の拡張フィールドに、マルチバンドおよびマルチチャネルの少なくとも一方に関する情報を設定し、
前記ビーコン信号を送信する、
通信装置の通信方法。 - ビーコン信号の拡張フィールドに、マルチバンドおよびマルチチャネルの少なくとも一方に関する情報が設定された前記ビーコン信号を受信し、
前記情報に基づいて、マルチバンドおよびマルチチャネルの少なくとも一方に基づく通信を実行する、
通信装置の通信方法。
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JP2019004354A (ja) * | 2017-06-16 | 2019-01-10 | Necプラットフォームズ株式会社 | 通信装置、通信システム、通信制御方法および通信制御プログラム |
Non-Patent Citations (2)
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LAURENT, CARIOU ET AL.: "6Ghz-Out-of-band discovery discussion", IEEE 802.11-18/1060R0, 11 November 2018 (2018-11-11), pages 1 - 15, XP068133441 * |
MOHAMED, ABOUELSEOUD ET AL.: "Discovery Assistance for 802.11ay", IEEE 802.11-18/0816RL, 7 May 2018 (2018-05-07), pages 1 - 20, XP068159444 * |
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