Communication device, communication method, and program

Abstract

To provide a communication device, a communication method, and a program that allow preamble puncturing to be used in wireless LAN communication even in a frequency bandwidth larger than 160 MHz.SOLUTION: A communication device capable of wireless communication based on the IEEE802.11 standard has transmitting means for transmitting a wireless frame having a preamble and a data field of a physical layer (PHY). The preamble includes an L-STF, an L-LTF, an L-SIG, an EHT-SIG-A, an EHT-STF, and an EHT-LTF, and the EHT-SIG-A includes information on preamble puncturing when a frequency bandwidth used by the communication device is 320 MHz.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a communication device, a communication method, and a program for performing wireless communication.

Background Art

[0002] In recent years, Wireless LAN (WLAN) technology has achieved an improvement in throughput for data communication, and various technical developments are still being actively carried out.

[0003] As one of the WLAN communication standards, the IEEE802.11 series of standards is known, and there are standards such as IEEE802.11a / b / g / n / ac / ax. The latest standard, IEEE802.11ax, uses OFDMA (Orthogonal Frequency-Division Multiple Access) technology. This has achieved a high peak throughput of up to 9.6 gigabits per second (Gbps), and also improved the communication speed in congested situations (see Patent Document 1). In addition, the IEEE802.11be standard is being considered as a successor standard aiming for further throughput improvement.

[0004] As one of the measures for throughput improvement aimed at by IEEE802.11be, it is being considered to expand the maximum value of the radio frequency bandwidth from 160 MHz to 320 MHz.

[0005] Furthermore, in order to efficiently use the frequency band, a technique called Preamble Puncturing is being considered. This is a technique for performing communication using the remaining frequency bandwidth other than the unusable frequency bandwidth when a part of the frequency bandwidth to be used is unusable.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] As described above, in IEEE 802.11be, it is considered to extend the available frequency bandwidth to 320 MHz. However, in the previous wireless LAN standard IEEE 802.11ax, Preamble Puncturing could only be used up to a bandwidth of 160 MHz. Therefore, an object of the present invention is to enable the use of Preamble Puncturing even in a frequency bandwidth larger than 160 MHz in wireless LAN communication.

MEANS FOR SOLVING THE PROBLEMS

[0008] In view of the above problems, a communication device according to an aspect of the present invention is a communication device capable of wireless communication based on the IEEE 802.11 standard, and has transmission means for transmitting a wireless frame having a preamble and a data field in a physical layer (PHY), the preamble including an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), and the EHT-SIG-A is characterized by including information regarding Preamble Puncturing when the frequency bandwidth used by the communication device is 320 MHz.

EFFECTS OF THE INVENTION

[0009] According to the present invention, in wireless LAN communication, Preamble Puncturing can be used even in a frequency bandwidth larger than 160 MHz.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0012] Fig. 1 shows a configuration example of the network according to this embodiment. The wireless network 101 in Fig. 1 is composed of an access point (hereinafter referred to as AP) 102 and a plurality of stations (hereinafter referred to as STAs) 103, 104, 105. Here, the AP 102 is, for example, an access point compliant with the IEEE802.11 standard, and also includes a Group Owner (hereinafter referred to as GO) compliant with the Wi-Fi Direct standard. When the AP 102 is the GO, the plurality of STAs 103 to 105 are also called Clients.

[0013] AP102 constructs a wireless network 101 compliant with the IEEE802.11 standard and transmits a beacon containing the identification information of the wireless network. Here, the dotted line shown as the wireless network 101 in FIG. 1 indicates the range where the signal transmitted by AP102 reaches, and AP102 can communicate with STAs within the range of the dotted line. Also, AP102 may have a relay function.

[0014] When AP102 receives a Probe Request message transmitted from an STA, it transmits a Probe Response message as a response. The Probe Response message contains the identification information of the wireless network 101. The identification information of the wireless network is, for example, a Service Set Identifier (hereinafter, SSID).

[0015] Also, AP102 communicates with each of STAs 103 to 105 according to a wireless communication method based on the IEEE802.11be standard. AP102 establishes a wireless connection with each of STAs 103 to 105 through a predetermined association process or the like.

[0016] Note that FIG. 1 is an example, and the following discussion is applicable to a network including a large number of communication devices in a wider area, for example, and also to the positional relationships of various communication devices.

[0017] FIG. 2 shows the hardware configurations of AP102 and STAs 103 to 105 as the communication devices according to the present embodiment. AP102 according to the present embodiment may be not only an AP dedicated device such as a so-called wireless LAN router but also a device such as a smartphone, a camera, a printer, a projector, or the like. Also, STAs 103 to 105 may be devices such as a smartphone, a camera, a printer, a projector, or the like. Also, one communication device may have both an AP function and an STA function.

[0018] As an example of its hardware configuration, the AP and the STA include a storage unit 201, a control unit 202, a functional unit 203, an input unit 204, an output unit 205, a communication unit 206, and an antenna 207.

[0019] The storage unit 201 includes one or both of one or more ROMs and RAMs, or either one of them, and stores programs for performing various operations described later, various information such as communication parameters for wireless communication, etc. In addition to memories such as ROMs and RAMs, storage media such as flexible disks, hard disks, optical disks, magneto-optical disks, CD-ROMs, CD-Rs, magnetic tapes, non-volatile memory cards, DVDs, etc. may be used as the storage unit 201.

[0020] The control unit 202 is constituted by, for example, one or more processors such as CPUs and MPUs, ASICs (Application Specific Integrated Circuits), DSPs (Digital Signal Processors), FPGAs (Field Programmable Gate Arrays), etc. Here, CPU is the initialism of Central Processing Unit, and MPU is the initialism of Micro Processing Unit. The control unit 202 controls the entire device by executing the programs stored in the storage unit 201. Note that the control unit 202 may control the entire device by the cooperation of the programs stored in the storage unit 201 and the OS (Operating System).

[0021] In addition, the control unit 202 controls the functional unit 203 to execute predetermined processes such as imaging, printing, projection, etc. The functional unit 203 is hardware for the AP or the STA to execute predetermined processes. For example, when the AP or the STA is a camera, the functional unit 203 is an imaging unit and performs imaging processing. Also, for example, when the AP or the STA is a printer, the functional unit 203 is a printing unit and performs printing processing. Also, for example, when the AP or the STA is a projector, the functional unit 203 is a projection unit and performs projection processing. The data processed by the functional unit 203 may be data stored in the storage unit 201, or may be data communicated with other APs or STAs via the communication unit 206 described later.

[0022] The input unit 204 receives various operations from the user. The output unit 205 performs various outputs to the user. Here, the output by the output unit 205 includes at least one of display on the screen, audio output by the speaker, vibration output, etc. Note that both the input unit 204 and the output unit 205 may be realized by one module such as a touch panel.

[0023] The communication unit 206 is a so-called wireless LAN chip that controls wireless communication compliant with the IEEE802.11 standard series and controls IP (Internet Protocol) communication, etc. In the present embodiment, the communication unit 206 can execute at least processing for communication compliant with the IEEE802.11be standard. The communication unit 206 is a processing device that generates a PPDU (Physical layer (PHY) Protocol Data Unit) compliant with the IEEE802.11 standard series. Or it is a processing device that receives and processes a PPDU generated by another device. The communication unit 206 in the present embodiment generates or processes various PPDUs described later. Also, the communication unit 206 controls the antenna 207 to transmit and receive wireless signals for wireless communication. The AP or STA communicates content such as image data, document data, and video data with other communication devices via the communication unit 206. The wireless antennas 207 are antennas that can receive any of the sub-GHz band, 2.4 GHz band, 5 GHz band, and 6 GHz band. The wireless antennas 207 may be physically composed of two or more antennas to perform MIMO communication.

[0024] FIG. 3 shows the frequency band configuration used in the wireless communication in the present embodiment. In the 2.4 GHz band used for wireless LAN, the available frequency band width is 20 MHz or 40 MHz. Also, in the 5 GHz band also used for wireless LAN, the available frequency band width is any of 20 MHz, 40 MHz, 80 MHz, and 160 MHz.

[0025] In this embodiment, it is further possible to use a frequency band of 5.925 GHz to 7.125 GHz, which is called the 6 GHz band. In the 6 GHz band, not only 20 MHz, 40 MHz, 80 MHz, and 160 MHz, but also a bandwidth of 320 MHz can be used as the available frequency bandwidth. Note that Fig. 3 is an example, and it may be possible to use frequency bands other than these frequency bands, and it may also be possible to use a bandwidth of 320 MHz in the 5 GHz band.

[0026] Figs. 4 to 6 are examples of the frame formats of EHT SU PPDU, EHT MU PPDU, and EHT ER PPDU, which are wireless frames in the IEEE802.11be standard used in this embodiment. EHT is an abbreviation for Extremely High Throughput. These PPDUs include a preamble part of the physical layer (PHY), a data field, and a Packet Extension part. The preamble of the PPDU includes each field shown in 401 to 407 (or 501 to 508, 601 to 607). Various data above the MAC layer are stored in the data fields 408, 509, and 608. Note that Figs. 4 to 6 are examples, and each PPDU may include fields other than the fields described below, or some fields may be omitted. Also, the order of the fields is not limited to the order shown in Figs. 4 to 6.

[0027] First, as information included in the PPDU, there are STF (Short Training Field), LTF (Long Term Field), and SIG (Signal Field).

[0028] At the head of the PPDU, there are L-STF (Legacy-STF) 401, L-LTF (Legacy-LTF) 402, and L-SIG (Legacy-Signal) 403, which are backward compatible with the IEEE802.11a / b / g / n / ac / ax standards.

[0029] L-STF401 is used for the detection of PHY frame signals, automatic gain control (AGC), timing detection, etc. L-LTF602 is used for high-precision frequency and time synchronization, obtaining propagation channel information (CSI), etc. L-SIG403 is used to transmit control information including communication rate and length information.

[0030] Legacy devices compliant with the IEEE802.11a / b / g / n / ac / ax standards can decode the data of the above various legacy fields.

[0031] The EHT SU PPDU in Figure 4 is a PPDU used for communication between a Single User (between an AP and a single STA). The EHT SU PPDU has L-STF401, L-LTF02, L-SIG403, RL-SIG404, EHT-SIG-A405, EHT-STF406, and EHT-LTF407 as preambles. Furthermore, it has a data field 408 and a Packet extention609.

[0032] The EHT ER SU PPDU in Figure 6 is a PPDU used in Extended Range (when the communication distance needs to be extended) and is used for communication between an AP and a single STA. The EHT ER PPDU has L-STF601, L-LTF602, L-SIG603, RL-SIG604, EHT-SIG-A605, EHT-STF606, and EHT-LTF607 as preambles. Furthermore, it has a data field 608 and a Packet extention609. The EHT ER SU PPDU has differences such as restrictions on the MCS (modulation method and coding rate) that can be used compared to the EHT SU PPDU in order to extend the communication distance.

[0033] The EHT-SIG-A405 and 605 included in the EHT SU PPDU and the EHT ER SU PPDU contain the information of EHT-SIG-A1 and EHT-SIG-A2 required for receiving the PPDU, as shown in Table 1 and Table 2.

[0034] In this embodiment, the used frequency bandwidth and the information of preamble puncturing are indicated in the Bandwidth field of EHT-SIG-A1. For example, when the value of the Bandwidth field is 0, it indicates that a 20 MHz bandwidth is used; when it is 1, a 40 MHz bandwidth is used; when it is 2, an 80 MHz bandwidth is used; when it is 3, a 160 MHz bandwidth is used; when it is 4, a 320 MHz bandwidth is used. And in these cases, it indicates that the preamble puncturing mode is not used. When the value of the Bandwidth field is 5, it indicates 80 MHz preamble puncturing, and only the secondary 20 MHz is punctured. Note that the punctured frequency band means that the frequency band is not used. When the value of the Bandwidth field is 6, it indicates 80 MHz preamble puncturing, and only one of the two 20 MHz of the secondary 40 MHz is punctured. When the value of the Bandwidth field is 7, it indicates 160 (or 80 + 80) MHz preamble puncturing, and only the secondary 20 MHz is punctured. When the value of the Bandwidth field is 8, it indicates 160 (or 80 + 80) MHz preamble puncturing, and at least one 20 MHz other than the primary 40 MHz is punctured. When the value of the Bandwidth field is 9, it indicates 320 MHz preamble puncturing, and only the secondary 20 MHz is punctured. When the value of the Bandwidth field is 10, it indicates 320 MHz preamble puncturing, and only one of the two 20 MHz of the secondary 40 MHz is punctured. When the value of the Bandwidth field is 11, it indicates 320 MHz preamble puncturing, and at least one 20 MHz other than the primary 80 MHz is punctured. To indicate this information, at least 4 bits are allocated to the Bandwidth field of EHT-SIG-A1.The correspondence between the value of the Bandwidth field and the allocation of the punctured frequency band described here is just an example, and as long as it is shown for a bandwidth of 320 MHz, other allocations may be used. Also, the name of the field, the position and size of the bits are not limited to those described in Tables 1 and 2, and the same information may be stored with different field names, different orders or sizes.

[0035]

Table 1

[0036]

Table 2

[0037]

Table 3

[0038]

Table 4

[0039] The EHT MU PPDU in Figure 5 is a PPDU used for communication between Multi User (between an AP and multiple STAs). The EHT MU PPDU has L-STF501, L-LTF502, L-SIG503, RL-SIG504, EHT-SIG-A505, EHT-SIG-B506, EHT-STF507, and EHT-LTF507 as preambles. Furthermore, it has a data field 508 and a Packet extention 509.

[0040] As shown in Tables 3 and 4, EHT-SIG-A505 contains the information of EHT-SIG-A1 and EHT-SIG-A2 necessary for receiving the PPDU.

[0041] In this embodiment, the used frequency bandwidth and the information of preamble puncturing are indicated by the Bandwidth field in EHT-SIG-A1. For example, when the value of the Bandwidth field is 0, it indicates that a 20 MHz bandwidth is used; when it is 1, a 40 MHz bandwidth is used; when it is 2, an 80 MHz bandwidth is used; when it is 3, a 160 MHz bandwidth is used; when it is 4, a 320 MHz bandwidth is used. And in these cases, it indicates that the preamble puncturing mode is not used. When the value of the Bandwidth field is 5, it indicates 80 MHz preamble puncturing and only the secondary 20 MHz is punctured. Note that the punctured frequency band means that the frequency band is not used. When the value of the Bandwidth field is 6, it indicates 80 MHz preamble puncturing and only one of the two 20 MHz of the secondary 40 MHz is punctured. When the value of the Bandwidth field is 7, it indicates 160 (or 80 + 80) MHz preamble puncturing and only the secondary 20 MHz is punctured. When the value of the Bandwidth field is 8, it indicates 160 (or 80 + 80) MHz preamble puncturing and at least one 20 MHz other than the primary 40 MHz is punctured. When the value of the Bandwidth field is 9, it indicates 320 MHz preamble puncturing and only the secondary 20 MHz is punctured. When the value of the Bandwidth field is 10, it indicates 320 MHz preamble puncturing and only one of the two 20 MHz of the secondary 40 MHz is punctured. When the value of the Bandwidth field is 11, it indicates 320 MHz preamble puncturing and at least one 20 MHz other than the primary 80 MHz is punctured. To indicate this information, at least 4 bits are allocated to the Bandwidth field in EHT-SIG-A1.The correspondence between the value of the Bandwidth field described here and the allocation of the punctured frequency band is just an example, and as long as it is shown for a bandwidth of 320 MHz, other allocations may be used. Also, the name of the field, the position and size of the bits are not limited to those described in Tables 1 and 2, and the same information may be stored with different field names, different orders, or different sizes.

[0042] As described above, in the EHT SU PPDU, EHT ER SU PPDU, and EHT MU PPDU used in the IEEE802.11be standard, preamble puncturing can be performed by specifying a frequency band exceeding 160 MHz. In the above description, the information of the same Bandwidth field is used for each of the EHT SU PPDU, EHT ER SU PPDU, and EHT MU PPDU. However, the correspondence between the value of the Bandwidth field and the allocation of the punctured frequency band may be made different between the SU PPDU and the MU PPDU. When preamble puncturing is performed in MU PPDU, that is, multi-user communication, for example, communication bands can be allocated to different users (STAs) for each frequency width of 20 MHz. For example, in the case of MU PPDU, that is, multi-user communication, the number of punctured frequency bands can be increased compared to the case of SU PPDU, that is, single-user communication, and the value of the Bandwidth field corresponding thereto may be defined. Thereby, the degree of freedom in using the frequency band can be further increased in the case of multi-user communication compared to the case of single-user communication.

[0043]

Table 5

[0044]

Table 6

[0045]

Table 7

[0046] (Variant example) In the above example, the information of preamble puncturing is indicated by the Bandwidth field of EHT-SIG-A1. And 4 bits are allocated to the Bandwidth field of EHT-SIG-A1 so as to be able to indicate the information when the frequency bandwidth to be used is 320 MHz. In the following example, the Bandwidth field of EHT-SIG-A1 is set to 3 bits, and a field of EHT-SIG-A3 is additionally provided, and the information of preamble puncturing is indicated using these fields.

[0047] First, when the value of the Bandwidth field in EHT-SIG-A1 is 0, it indicates that the frequency bandwidth to be used is 20 MHz. When the value of the Bandwidth field in EHT-SIG-A1 is 1, it indicates that the frequency bandwidth to be used is 40 MHz. When the value of the Bandwidth field in EHT-SIG-A1 is 2, it indicates that the frequency bandwidth to be used is 80 MHz. When the value of the Bandwidth field in EHT-SIG-A1 is 3, it indicates that the frequency bandwidth to be used is 160 MHz. When the value of the Bandwidth field in EHT-SIG-A1 is 4, it indicates that the frequency bandwidth to be used is 320 MHz. Also, when the value of the Bandwidth field in EHT-SIG-A1 is between 0 and 4, it indicates that no preamble pucturing is performed. When the value of the Bandwidth field in EHT-SIG-A1 is 5, it indicates that the frequency bandwidth to be used is 80 MHz and preamble pucturing is performed. When the value of the Bandwidth field in EHT-SIG-A1 is 6, it indicates that the frequency bandwidth to be used is 160 MHz and preamble pucturing is performed. When the value of the Bandwidth field in EHT-SIG-A1 is 7, it indicates that the frequency bandwidth to be used is 320 MHz and preamble pucturing is performed. Furthermore, when the value of the Bandwidth field in EHT-SIG-A1 is between 5 and 7, EHT-PPDU shall include EHT-SIG-A3 shown in Table 5. Note that the field names, bit positions, sizes, etc. shown in Table 5 are just examples, and different names, positions, sizes, etc. may be used as long as they indicate the same information.

[0048] The EHT-SIG-A3 shown in Table 5 includes a Preamble Puncturing field that indicates the frequency bandwidth to be Preamble Punctured. The Preamble Puncturing field in Table 5 has a bit length of 16 bits and is associated with a 20 MHz bandwidth in order from bit position B0. When using the 20 MHz band, the bit is set to 0, and when not using it, i.e., when Puncturing, the bit is set to 1. Note that the definitions of 0 and 1 for the bits may be reversed. That is, in Table 5, the frequency band to be used is shown in the form of a bitmap.

[0049] For example, when the frequency bandwidth to be used is 80 MHz and only the secondary 20 MHz is Punctured, the value of the Bandwidth field in EHT-SIG-A1 is set to 5. Then, in the Preamble Puncturing field of EHT-SIG-A3, only the bit of B1 is set to 1, and the other bits are set to 0. Note that the bitmap may be variable-length according to the frequency bandwidth defined in the Bandwidth field of EHT-SIG-A1. That is, it may be 4 bits when the frequency bandwidth to be used is 80 MHz, 8 bits when it is 160 MHz, and 16 bits when it is 320 MHz. In that case, the upper bits that are excessive for the frequency bandwidth defined in the Bandwidth field of EHT-SIG-A1 may be reserved areas without being used.

[0050]

Table 8

[0051] As yet another modification example, instead of the example in Table 5, the frequency band to be Preamble Punctured may be indicated as follows. That is, when the value of the Preamble Puncturing field in EHT-SIG-A3 is 0, all of the frequency band widths are used, that is, Preamble Puncturing is not performed. When the value of the Preamble Puncturing field in EHT-SIG-A3 is 1, it indicates that the lowest frequency band width of 20 MHz is to be Punctured. When the value of the Preamble Puncturing field in EHT-SIG-A3 is 2, it indicates that 20 MHz from 20 to 40 MHz of the lowest frequency band width is to be Punctured. When the value of the Preamble Puncturing field in EHT-SIG-A3 is 3, it indicates that 20 MHz from 40 to 60 MHz of the lowest frequency band width is to be Punctured. In this way, the value of the Preamble Puncturing field in EHT-SIG-A3 may be defined. However, the example described here is just an example, and other methods may also be acceptable.

[0052] As described above, according to the present embodiment and each modification example, even when the frequency band width used for wireless LAN communication becomes 320 MHz, appropriate Preamble Puncturing can be performed. Also, the AP or STA can generate the EHT-SIG-A field in the wireless LAN PPDU frame in order to perform appropriate Preamble Puncturing. Then, by communicating these PPDU frames between the AP and the STA, appropriate Preamble Puncturing can be performed in the wireless LAN communication between the AP and the STA.

[0053] (Other Embodiments) The present invention can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and causing one or more processors in a computer of the system or apparatus to read and execute the program. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

[0054] The invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the claims are attached to disclose the scope of the invention.

Explanation of Reference Numerals

[0055] 102 AP 103~105 STA 201 Storage Unit 202 Control Unit 203 Functional Unit 204 Input Unit 205 Output Unit 206 Communication Unit 207 Antenna

Claims

Claim 1 A communication device capable of wireless communication based on the IEEE 802.11 standard, having transmission means for transmitting a wireless frame having a preamble and a data field in a physical layer (PHY), the preamble including an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field), wherein the EHT-SIG-A includes information regarding Preamble Puncturing when the frequency bandwidth used by the communication device is 320 MHz. The communication device is characterized by this. Claim 2 The communication device according to Claim 1, wherein the EHT-SIG-A indicates information indicating the frequency bandwidth used by the communication device and information indicating the frequency band for performing Preamble Puncturing when using the frequency bandwidth as values of one subfield. Claim 3 The communication device according to Claim 1, wherein the EHT-SIG-A indicates information indicating the frequency bandwidth used by the communication device and information indicating the frequency band for performing Preamble Puncturing when using the frequency bandwidth as values of different subfields. Claim 4 The communication device according to any one of Claims 1 to 3, wherein the wireless frame includes an EHT SU (Single User) PPDU and an EHT MU (Multi User) PPDU. Claim 5 A communication device capable of wireless communication based on the IEEE 802.11 standard, Receiving means for receiving a wireless frame having a preamble and a data field of a physical layer (PHY), wherein the preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field). The communication device, wherein the EHT-SIG-A includes information regarding Preamble Puncturing when the frequency bandwidth used by the communication device is 320 MHz. Claim 6 Generating means for generating a wireless frame having a preamble and a data field of a physical layer (PHY), wherein the preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field). The processing device, wherein the EHT-SIG-A includes information regarding Preamble Puncturing when the frequency bandwidth used for wireless communication based on the IEEE 802.11 standard is 320 MHz. Claim 7 A communication method for performing wireless communication based on the IEEE 802.11 standard A transmission step of transmitting a wireless frame having a preamble and a data field of a physical layer (PHY), wherein the preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field). The EHT-SIG-A includes information regarding Preamble Puncturing when the frequency bandwidth used in wireless communication based on the IEEE 802.11 standard is 320 MHz. A communication method characterized by this. Claim 8 A communication method for performing wireless communication based on the IEEE 802.11 standard, A receiving step of receiving a wireless frame having a preamble and a data field of a physical layer (PHY), wherein the preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF (EHT Short Training Field), and an EHT-LTF (EHT Long Training Field). The EHT-SIG-A includes information regarding Preamble Puncturing when the frequency bandwidth used in wireless communication based on the IEEE 802.11 standard is 320 MHz. A communication method characterized by this. Claim 9 A program for operating a computer as the communication device according to any one of Claims 1 to 5.

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