Pilot signal for 80 MHZ

Abstract

The present invention relates to a wireless local area network system, characterized in that a transmitting station (STA) can generate a first physical protocol data unit (PPDU) and transmit the first PPDU via 80 MHz, wherein the first PPDU can include a first data field transmitted via a 966-tone resource unit (RU), and the first data field includes a first pilot subcarrier for a 996-tone RU.

Description

Technical Field

[0001] This specification relates to subcarrier locations suitable for a new tone plan in a wireless local area network (WLAN) system. Background Art

[0002] Wireless local area networks (WLANs) have been improved in various ways. For example, the IEEE 802.11ax standard proposes an improved communication environment using orthogonal frequency division multiple access (OFDMA) and downlink multi-user multiple input multiple output (DL MU MIMO) technology.

[0003] This specification proposes technical features that can be used in new communication standards. For example, the new communication standard may be the Extremely High Throughput (EHT) standard currently under discussion. The EHT standard may use newly proposed increased bandwidth, enhanced PHY layer protocol data unit (PPDU) structure, enhanced sequencing, hybrid automatic repeat request (HARQ) scheme, etc. The EHT standard may be referred to as the IEEE 802.11be standard. Summary of the Invention

[0004] In a wireless local area network (WLAN) system according to various embodiments, a transmitting station (STA) may generate a first physical protocol data unit (PPDU). The transmitting STA may transmit the first PPDU via an 80 MHz frequency band. The first PPDU may include a first data field transmitted via a 996-tone resource unit (RU). The first data field includes a first pilot subcarrier for the 996-tone RU, and the indexes of the first pilot subcarriers may be {-468, -400, -334, -266, -220, -152, -86, -18, 18, 86, 152, 220, 266, 334, 400, 468}.

[0005] According to examples of the present specification, a pilot signal suitable for the newly defined 80 MHz tone plan may be transmitted and received. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This shows an example of a transmitting device and / or a receiving device in this specification.

[0007] Figure 2 is a conceptual view illustrating the structure of a wireless local area network (WLAN).

[0008] Figure 3 The figure shows the general link establishment process.

[0009] Figure 4 An example of a PPDU used in the IEEE standard is shown.

[0010] Figure 5The figure shows the layout of resource units (RUs) used in a 20 MHz frequency band.

[0011] Figure 6 The figure shows the layout of RUs used in the 40 MHz frequency band.

[0012] Figure 7 The figure shows the layout of RUs used in the 80 MHz frequency band.

[0013] Figure 8 The structure of the HE-SIG-B field is shown.

[0014] Figure 9 This figure illustrates an example of allocating multiple user STAs to the same RU through the MU-MIMO scheme.

[0015] Figure 10 The diagram shows the operation based on UL-MU.

[0016] Figure 11 An example of a trigger frame is shown.

[0017] Figure 12 An example of the common information field of a trigger frame is shown.

[0018] Figure 13 An example of subfields included in the per-user information field is illustrated.

[0019] Figure 14 Describe the technical features of the UORA solution.

[0020] Figure 15 An example of channels used / supported / defined in the 2.4 GHz frequency band is shown.

[0021] Figure 16 An example of channels used / supported / defined in the 5 GHz frequency band is shown.

[0022] Figure 17 An example of channels used / supported / defined in the 6 GHz frequency band is shown.

[0023] Figure 18 This figure shows an example of a PPDU used in this specification.

[0024] Figure 19 An example of a modified transmission device and / or reception device of the present specification is illustrated.

[0025] Figure 20 is a diagram illustrating an embodiment of an 80 MHz OFDMA tone plan.

[0026] Figure 21 is a diagram illustrating an embodiment of a tone plan.

[0027] Figure 22 is a diagram illustrating an embodiment of a method of operating a transmitting STA.

[0028] Figure 23 is a diagram illustrating an embodiment of a method of operating a receiving STA. DETAILED DESCRIPTION

[0029] In this specification, "A or B" may mean "only A," "only B," or "both A and B." In other words, in this specification, "A or B" may be interpreted as "A and / or B." For example, in this specification, "A, B, or C" may mean "only A," "only B," "only C," or "any combination of A, B, and C."

[0030] As used herein, a slash ( / ) or a comma may represent "and / or." For example, "A / B" may represent "A and / or B." Thus, "A / B" may represent "only A," "only B," or "both A and B." For example, "A, B, C" may represent "A, B, or C."

[0031] In this specification, "at least one of A and B" may mean "only A", "only B", or "both A and B". In addition, in this specification, the expression "at least one of A or B" or "at least one of A and / or B" may be interpreted as "at least one of A and B".

[0032] In addition, in this specification, "at least one of A, B, and C" may mean "only A," "only B," "only C," or "any combination of A, B, and C." In addition, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C."

[0033] In addition, brackets used in this specification may indicate "for example." Specifically, when indicated as "control information (EHT-signal)," it may indicate that "EHT-signal" is proposed as an example of "control information." In other words, "control information" in this specification is not limited to "EHT-signal," and "EHT-signal" may be proposed as an example of "control information." In addition, when indicated as "control information (i.e., EHT signal)," it may also mean that "EHT signal" is proposed as an example of "control information."

[0034] Technical features described separately in one drawing of this specification may be implemented separately or simultaneously.

[0035] The following examples of this specification can be applied to various wireless communication systems. For example, the following examples of this specification can be applied to wireless local area network (WLAN) systems. For example, this specification can be applied to IEEE 802.11a / g / n / ac standards or IEEE 802.11ax standards. In addition, this specification can also be applied to the newly proposed EHT standard or IEEE 802.11be standard. In addition, the examples of this specification can also be applied to new WLAN standards enhanced from the EHT standard or the IEEE 802.11be standard. In addition, the examples of this specification can be applied to mobile communication systems. For example, it can be applied to long term evolution (LTE) based on the 3rd Generation Partnership Project (3GPP) standard and mobile communication systems based on the evolution of LTE. In addition, the examples of this specification can be applied to communication systems based on the 5G NR standard of the 3GPP standard.

[0036] Hereinafter, in order to describe the technical features of the present specification, technical features applicable to the present specification will be described.

[0037] Figure 1 This shows an example of a transmitting device and / or a receiving device in this specification.

[0038] exist Figure 1 In the example, various technical features described below can be performed. Figure 1 At least one station (STA) is involved. For example, the STAs 110 and 120 in this specification may also be referred to by various terms such as mobile terminals, wireless devices, wireless transmit / receive units (WTRUs), user equipment (UEs), mobile stations (MSs), mobile subscriber units, or simply users. The STAs 110 and 120 in this specification may also be referred to by various terms such as networks, base stations, Node Bs, access points (APs), repeaters, routers, and relays. The STAs 110 and 120 in this specification may also be referred to by various names such as receiving devices, transmitting devices, receiving STAs, transmitting STAs, receiving devices, and transmitting devices.

[0039] For example, the STAs 110 and 120 may function as APs or non-APs. That is, the STAs 110 and 120 of this specification may function as APs and / or non-APs.

[0040] In addition to the IEEE 802.11 standard, the STAs 110 and 120 of this specification can support various communication standards. For example, communication standards based on 3GPP standards (e.g., LTE, LTE-A, 5G NR standards) can be supported. In addition, the STAs of this specification can be implemented as various devices such as mobile phones, vehicles, and personal computers. In addition, the STAs of this specification can support communication for various communication services such as voice calls, video calls, data communications, and self-driving (autonomous driving).

[0041] The STAs 110 and 120 of the present specification may include a medium access control (MAC) compliant with the IEEE 802.11 standard and a physical layer interface for a radio medium.

[0042] The following will refer to Figure 1 STAs 110 and 120 are described in sub-figure (a) of FIG.

[0043] The first STA 110 may include a processor 111, a memory 112, and a transceiver 113. The illustrated processing, memory, and transceiver may be individually implemented as separate chips, or at least two blocks / functions may be implemented by a single chip.

[0044] The transceiver 113 of the first STA performs signal transmission / reception operations, and specifically, can transmit / receive IEEE 802.11 packets (e.g., IEEE 802.11a / b / g / n / ac / ax / be, etc.).

[0045] For example, the first STA 110 may perform operations expected by the AP. For example, the AP's processor 111 may receive signals via the transceiver 113, process the received (RX) signals, generate transmitted (TX) signals, and provide control over signal transmission. The AP's memory 112 may store signals received via the transceiver 113 (e.g., RX signals) and may store signals to be transmitted via the transceiver (e.g., TX signals).

[0046] For example, the second STA 120 can perform operations expected by a non-AP STA. For example, the non-AP transceiver 123 can perform signal transmission / reception operations. Specifically, it can transmit / receive IEEE 802.11 packets (e.g., IEEE 802.11a / b / g / n / ac / ax / be packets, etc.).

[0047] For example, the processor 121 of the non-AP STA may receive a signal through the transceiver 123, process the RX signal, generate a TX signal, and provide control for signal transmission. The memory 122 of the non-AP STA may store a signal (e.g., an RX signal) received through the transceiver 123 and may store a signal (e.g., a TX signal) to be transmitted through the transceiver.

[0048] For example, the operation of a device indicated as an AP in the following description may be performed in the first STA 110 or the second STA 120. For example, if the first STA 110 is an AP, the operation of the device indicated as the AP may be controlled by the processor 111 of the first STA 110, and related signals may be transmitted or received through the transceiver 113 controlled by the processor 111 of the first STA 110. In addition, control information related to the operation of the AP or the AP's TX / RX signals may be stored in the memory 112 of the first STA 110. In addition, if the second STA 120 is an AP, the operation of the device indicated as the AP may be controlled by the processor 121 of the second STA 120, and related signals may be transmitted or received through the transceiver 123 controlled by the processor 121 of the second STA 120. In addition, control information related to the operation of the AP or the AP's TX / RX signals may be stored in the memory 122 of the second STA 120.

[0049] For example, in the following description, the operation of a device indicated as a non-AP (or user STA) may be performed in the first STA 110 or the second STA 120. For example, if the second STA 120 is a non-AP, the operation of the device indicated as the non-AP may be controlled by the processor 121 of the second STA 120, and related signals may be transmitted or received through the transceiver 123 controlled by the processor 121 of the second STA 120. In addition, control information related to the operation of the non-AP or the TX / RX signal of the non-AP may be stored in the memory 122 of the second STA 120. For example, if the first STA 110 is a non-AP, the operation of the device indicated as the non-AP may be controlled by the processor 111 of the first STA 110, and related signals may be transmitted or received through the transceiver 113 controlled by the processor 111 of the first STA 110. In addition, control information related to the operation of the non-AP or the TX / RX signal of the non-AP may be stored in the memory 112 of the first STA 110.

[0050] In the following description, devices referred to as (transmitting / receiving) STA, first STA, second STA, STA1, STA2, AP, first AP, second AP, AP1, AP2, (transmitting / receiving) terminal, (transmitting / receiving) device, (transmitting / receiving) apparatus, network, etc. may refer to Figure 1 For example, devices indicated as (transmitting / receiving) STA, first STA, second STA, STA1, STA2, AP, first AP, second AP, AP1, AP2, (transmitting / receiving) terminal, (transmitting / receiving) device, (transmitting / receiving) apparatus, network, etc. (but without specific reference numerals) may refer to Figure 1 For example, in the following example, the operations of various STAs transmitting / receiving signals (eg, PPDU) may be performed in Figure 1 In addition, in the following examples, the operations of various STAs generating TX / RX signals or performing data processing and calculations in advance for TX / RX signals can be performed in Figure 1 11 and 121. For example, examples of operations for generating TX / RX signals or performing data processing and calculation in advance may include: 1) determining / obtaining / configuring / calculating / decoding / encoding bit information of subfields (SIG, STF, LTF, data) included in the PPDU; 2) determining / configuring / obtaining time resources or frequency resources (e.g., subcarrier resources) for the subfields (SIG, STF, LTF, data) included in the PPDU; 3) determining / configuring / obtaining a specific sequence (e.g., a pilot sequence, an STF / LTF sequence, an additional sequence applied to the SIG) for the subfields (SIG, STF, LTF, data) included in the PPDU; 4) power control operations and / or power saving operations applied to STAs; and 5) operations related to determining / obtaining / configuring / decoding / encoding of ACK signals. In addition, in the following examples, various information (e.g., information related to fields / subfields / control fields / parameters / power, etc.) used by various STAs to determine / obtain / configure / calculate / decode / encode TX / RX signals may be stored in Figure 1 in memories 112 and 122 .

[0051] Figure 1 The aforementioned device / STA of sub-graph (a) can be as follows Figure 1 In the following, we will modify the Figure 1 Sub-figure (b) of FIG. 1 is used to describe STA 110 and STA 120 of this specification.

[0052] For example, Figure 1The transceivers 113 and 123 shown in the sub-diagram (b) can perform the same Figure 1 The same functions as the aforementioned transceiver shown in sub-figure (a) of FIG. Figure 1 The processing chips 114 and 124 shown in sub-figure (b) may include processors 111 and 121 and memories 112 and 122 . Figure 1 The processors 111 and 121 and the memories 112 and 122 shown in the sub-diagram (b) of FIG. Figure 1 The aforementioned processors 111 and 121 and memories 112 and 122 shown in sub-Figure (a) have the same functions.

[0053] The mobile terminal, wireless device, wireless transmit / receive unit (WTRU), user equipment (UE), mobile station (MS), mobile subscriber unit, user, user STA, network, base station, Node B, access point (AP), repeater, router, relay, receiving unit, transmitting unit, receiving STA, transmitting STA, receiving device, transmitting device, receiving apparatus and / or transmitting apparatus described below may mean Figure 1 STAs 110 and 120 shown in sub-figures (a) / (b) of FIG. 110 and 120, or may mean Figure 1 The processing chips 114 and 124 shown in the sub-figure (b) of FIG. In other words, the technical features of this specification can be Figure 1 The STA 110 and 120 shown in the sub-figures (a) / (b) of FIG. 110 and 120 may be executed only in Figure 1 The processing chips 114 and 124 shown in the sub-figure (b) of FIG. Figure 1 For example, the technical feature of sending a control signal from a STA can be understood as the transceiver 113 and 123 shown in the sub-figure (a) / (b) of FIG. Figure 1 The transceiver 113 illustrated in the sub-figures (a) / (b) of FIG. 1 transmits the Figure 1 Alternatively, the technical feature of the control signal generated by the processor 111 and 121 as illustrated in the sub-figures (a) / (b) of FIG. 1 may be understood as the technical feature of the control signal generated by the processor 111 and 121. Figure 1 The technical features of the processing chips 114 and 124 shown in sub-figure (b) of FIG. 10 are those for generating control signals to be transmitted to the transceivers 113 and 123 .

[0054] For example, the technical feature of receiving the control signal by the receiving STA can be understood as Figure 1 Alternatively, the technical feature of the receiving STA receiving the control signal can be understood as the technical feature of the receiving STA receiving the control signal through Figure 1 The processors 111 and 121 shown in the sub-diagram (a) of Figure 1Alternatively, the technical feature of the receiving STA receiving the control signal can be understood as the technical feature of the control signal received by the transceiver 113 and 123 shown in the sub-figure (a) of FIG. Figure 1 The processing chips 114 and 124 shown in the sub-graph (b) of FIG. Figure 1 Technical characteristics of the control signals received in transceivers 113 and 123 shown in sub-figure (b).

[0055] Reference Figure 1 , software codes 115 and 125 may be included in memories 112 and 122. The software codes 115 and 126 may include instructions for controlling operations of the processors 111 and 121. The software codes 115 and 125 may be included as various programming languages.

[0056] Figure 1 The processors 111 and 121 or the processing chips 114 and 124 may include application specific integrated circuits (ASICs), other chipsets, logic circuits and / or data processing devices. The processor may be an application processor (AP). For example, Figure 1 The processors 111 and 121 or the processing chips 114 and 124 may include at least one of the following: a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), and a modulator and demodulator (modem). For example, Figure 1 The processors 111 and 121 or the processing chips 114 and 124 may be composed of SNAPDRAGONTM series processors manufactured by EXYNOSTM series processors manufactured by A series processors manufactured by HELIOTM series processors manufactured by ATOMTM series processors manufactured by or enhanced from these processors.

[0057] In this specification, the uplink may refer to a link for communication from a non-AP STA to an SP STA, and uplink PPDUs / packets / signals, etc. may be transmitted through the uplink. In addition, in this specification, the downlink may refer to a link for communication from an AP STA to a non-AP STA, and downlink PPDUs / packets / signals, etc. may be transmitted through the downlink.

[0058] Figure 2 is a conceptual diagram showing the structure of a wireless local area network (WLAN).

[0059] Figure 2The upper portion of shows the structure of an infrastructure Basic Service Set (BSS) of the Institute of Electrical and Electronics Engineers (IEEE) 802.11.

[0060] Reference Figure 2 The wireless LAN system may include one or more infrastructure BSSs 200 and 205 (hereinafter referred to as BSSs). BSSs 200 and 205, which are a collection of APs and STAs (e.g., access point (AP) 225 and station (STA1) 200-1) that have successfully synchronized to communicate with each other, do not represent a specific area. BSS 205 may include one or more STAs 205-1 and 205-2 that can join one AP 230.

[0061] The BSS may include at least one STA, an AP providing a distributed service, and a distribution system (DS) 210 connecting a plurality of APs.

[0062] The distribution system 210 may implement an extended service set (ESS) 240 that is extended by connecting a plurality of BSSs 200 and 205. The ESS 240 may be used as a term indicating one network configured by connecting one or more APs 225 or 230 via the distribution system 210. APs included in one ESS 240 may have the same service set identifier (SSID).

[0063] The portal 220 may serve as a bridge connecting a wireless LAN network (IEEE 802.11) and another network (eg, 802.X).

[0064] exist Figure 2 In the BSS shown in the upper portion of FIG, a network between APs 225 and 230 and a network between APs 225 and 230 and STAs 200-1, 205-1, and 205-2 can be implemented. However, a network can be configured between STAs to perform communication even without APs 225 and 230. A network that performs communication by configuring a network between STAs even without APs 225 and 230 is defined as an ad hoc network or an independent basic service set (IBSS).

[0065] Figure 2 The lower part of FIG shows a conceptual diagram showing an IBSS.

[0066] Reference Figure 2The IBSS is a BSS operating in self-organizing mode. Because the IBSS does not include an access point (AP), there is no centralized management entity that performs management functions. That is, in the IBSS, STAs 250-1, 250-2, 250-3, 255-4, and 255-5 are managed in a distributed manner. In the IBSS, all STAs 250-1, 250-2, 250-3, 255-4, and 255-5 can be mobile STAs and are not allowed to access the DS, forming a self-contained network.

[0067] Figure 3 Describe the general link establishment process.

[0068] In S310, the STA may perform a network discovery operation. The network discovery operation may include a scanning operation by the STA. That is, in order to access a network, the STA needs to discover participating networks. Before joining a wireless network, the STA needs to identify compatible networks. The process of identifying networks in a specific area is called scanning. Scanning methods include active scanning and passive scanning.

[0069] Figure 3 The network discovery operation including active scanning processing is described. In active scanning, the STA performing the scan sends a probe request frame and waits for a response to the probe request frame in order to identify which AP exists around while moving to a channel. The responder sends a probe response frame to the STA that has sent the probe request frame as a response to the probe request frame. Here, the responder may be the STA that sent the last beacon frame in the BSS of the channel being scanned. In the BSS, since the AP sends the beacon frame, the AP is the responder. In the IBSS, since the STAs in the IBSS take turns sending beacon frames, the responder is not fixed. For example, when a STA sends a probe request frame via channel 1 and receives a probe response frame via channel 1, the STA may store the BSS-related information included in the received probe response frame, may move to the next channel (e.g., channel 2), and may perform scanning by the same method (e.g., sending a probe request and receiving a probe response via channel 2).

[0070] although Figure 3Not shown in the figure, scanning can be performed by a passive scanning method. In passive scanning, the STA performing the scan can wait for a beacon frame while moving to a channel. The beacon frame is one of the management frames in IEEE 802.11 and is periodically sent to indicate the existence of a wireless network and enable the STA performing the scan to find the wireless network and join the wireless network. In the BSS, the AP is used to periodically send beacon frames. In the IBSS, the STAs in the IBSS take turns sending beacon frames. Upon receiving the beacon frame, the STA performing the scan stores information about the BSS included in the beacon frame and records beacon frame information in each channel while moving to another channel. The STA that receives the beacon frame can store the BSS-related information included in the received beacon frame, can move to the next channel, and can perform scanning in the next channel by the same method.

[0071] After discovering the network, the STA may perform an authentication process in S320. This authentication process may be referred to as the first authentication process to clearly distinguish it from the subsequent security establishment operation in S340. The authentication process in S320 may include a process in which the STA sends an authentication request frame to the AP, and the AP sends an authentication response frame to the STA in response. The authentication frames used for authentication requests / responses are management frames.

[0072] The authentication frame may include information about an authentication algorithm number, an authentication transaction sequence number, a status code, a challenge text, a robust security network (RSN), and a limited round-robin group.

[0073] The STA may send an authentication request frame to the AP. The AP may determine whether to allow authentication of the STA based on the information included in the received authentication request frame. The AP may provide the authentication process result to the STA via an authentication response frame.

[0074] When the STA is successfully authenticated, the STA may perform an association process in S330. The association process includes a process in which the STA sends an association request frame to the AP and the AP sends an association response frame to the STA in response. For example, the association request frame may include information about various capabilities, a beacon listening interval, a service set identifier (SSID), supported rates, supported channels, RSN, mobility domain, supported operation category, a traffic indication map (TIM) broadcast request, and interworking service capabilities. For example, the association response frame may include information about various capabilities, a status code, an association ID (AID), supported rates, an enhanced distributed channel access (EDCA) parameter set, a received channel power indicator (RCPI), a received signal-to-noise ratio indicator (RSNI), a mobility domain, a timeout interval (association recovery time), overlapping BSS scan parameters, a TIM broadcast response, and a QoS map.

[0075] In S340, the STA may perform a security establishment process. The security establishment process in S340 may include a process of establishing a private key through a four-way handshake (eg, through an Extensible Authentication Protocol over LAN (EAPOL) frame).

[0076] Figure 4 An example of PPDU used in the IEEE standard is described.

[0077] As shown, various types of PHY protocol data units (PPDUs) are used in the IEEE a / g / n / ac standards. Specifically, LTF and STF include training signals, SIG-A and SIG-B include control information for receiving STAs, and the data field includes user data corresponding to PSDU (MAC PDU / aggregated MAC PDU).

[0078] Figure 4 An example of HE PPDU according to IEEE 802.11ax is also included. Figure 4 The HE PPDU is an exemplary PPDU for multiple users. The HE-SIG-B may be included only in the PPDU for multiple users and may be omitted in the PPDU for a single user.

[0079] like Figure 4 As shown, the HE-PPDU for multiple users (MUs) may include a legacy short training field (L-STF), a legacy long training field (L-LTF), a legacy signal (L-SIG), a high-efficiency signal A (HE-SIG A), a high-efficiency signal B (HE-SIG B), a high-efficiency short training field (HE-STF), a high-efficiency long training field (HE-LTF), a data field (alternatively, a MAC payload), and a packet extension (PE) field. Each field may be transmitted within the time period shown (i.e., 4 or 8 μs).

[0080] The following describes a resource unit (RU) used for a PPDU. A RU can include multiple subcarriers (or tones). A RU can be used to transmit signals to multiple STAs using OFDMA. Furthermore, a RU can be defined as transmitting signals to a single STA. A RU can be used for the STF, LTF, data field, and more.

[0081] Figure 5 The layout of resource units (RUs) used in a 20 MHz frequency band will be described.

[0082] like Figure 5As shown, resource units (RUs) corresponding to different numbers of tones (i.e., subcarriers) can be used to form some fields of the HE-PPDU. For example, resources can be allocated for the HE-STF, HE-LTF, and data fields in the RU shown.

[0083] like Figure 5 As shown in the uppermost portion of FIG, 26 units (i.e., units corresponding to 26 tones) may be set. Six tones may be used for a guard band in the leftmost band of the 20 MHz band, and five tones may be used for a guard band in the rightmost band of the 20 MHz band. In addition, seven DC tones may be inserted in the center band (i.e., the DC band), and 26 units corresponding to 13 tones on each of the left and right sides of the DC band may be set. 26 units, 52 units, and 106 units may be allocated to other frequency bands. Each unit may be allocated to a receiving STA (i.e., a user).

[0084] Figure 5 The layout of the RU in can be used not only for multiple users (MU) but also for single users (SU), in which case one 242 unit can be used and three DC tones can be inserted, as shown in FIG. Figure 5 As shown at the bottom.

[0085] although Figure 5 RUs of various sizes are proposed, namely 26-RU, 52-RU, 106-RU, and 242-RU, but RUs of a particular size may be expanded or increased. Therefore, the present embodiment is not limited to a particular size of each RU (ie, the number of corresponding tones).

[0086] Figure 6 The layout of RUs used in the 40 MHz frequency band will be described.

[0087] Similar to using RUs with various sizes Figure 5 ,exist Figure 6 In the example, 26-RU, 52-RU, 106-RU, 242-RU, 484-RU, etc. can be used. In addition, five DC tones can be inserted in the center frequency, 12 tones can be used for a guard band in the leftmost band of the 40 MHz band, and 11 tones can be used for a guard band in the rightmost band of the 40 MHz band.

[0088] like Figure 6 As shown, when the RU layout is used for a single user, 484-RU can be used. The specific number of RUs can be similar to Figure 5 Change.

[0089] Figure 7 The layout of RUs used in the 80 MHz frequency band will be described.

[0090] Similar to using RUs with various sizes Figure 5 and Figure 6 ,exist Figure 7 Examples of the 26-RU, 52-RU, 106-RU, 242-RU, 484-RU, 996-RU, and the like can be used. Furthermore, seven DC tones can be inserted into the center frequency, 12 tones can be used for a guard band in the leftmost band of the 80 MHz band, and 11 tones can be used for a guard band in the rightmost band of the 80 MHz band. Furthermore, a 26-RU can be used, corresponding to 13 tones on each side of the DC band.

[0091] like Figure 7 As shown, when the RU layout is for a single user, a 996-RU can be used, in which case five DC tones can be inserted.

[0092] The RUs described in this specification can be used in uplink (UL) communication and downlink (DL) communication. For example, when performing UL-MU communication requested by a trigger frame, the transmitting STA (e.g., AP) can allocate a first RU (e.g., 26 / 52 / 106 / 242-RU, etc.) to the first STA through the trigger frame, and can allocate a second RU (e.g., 26 / 52 / 106 / 242-RU, etc.) to the second STA. Thereafter, the first STA can send a first triggered-based PPDU based on the first RU, and the second STA can send a second triggered-based PPDU based on the second RU. The first / second triggered-based PPDUs are sent to the AP in the same (or overlapping) time period.

[0093] For example, when configuring a DL MU PPDU, the transmitting STA (e.g., AP) may allocate a first RU (e.g., 26 / 52 / 106 / 242-RU, etc.) to the first STA and a second RU (e.g., 26 / 52 / 106 / 242-RU, etc.) to the second STA. That is, the transmitting STA (e.g., AP) may transmit the HE-STF, HE-LTF, and data fields for the first STA in the first RU of one MU PPDU, and may transmit the HE-STF, HE-LTF, and data fields for the second STA in the second RU.

[0094] Information about the layout of RUs may be signaled via HE-SIG-B.

[0095] Figure 8 Describe the structure of the HE-SIG-B field.

[0096] As illustrated, the HE-SIG-B field 810 includes a common field 820 and a user-specific field 830. The common field 820 can include information commonly applied to all users (i.e., user STAs) receiving the SIG-B. The user-specific field 830 can be referred to as a user-specific control field. When the SIG-B is transmitted to a plurality of users, the user-specific field 830 can be applied only to any one of the plurality of users.

[0097] As Figure 8 illustrated, the common field 820 and the user-specific field 830 can be separately encoded.

[0098] The common field 820 can include N*8-bit RU allocation information. For example, the RU allocation information can include information about a location of an RU. For example, when a 20 MHz channel is used as Figure 5 illustrated, the RU allocation information can include information about a specific frequency band in which a specific RU (26-RU / 52-RU / 106-RU) is arranged.

[0099] An example of a case in which the RU allocation information is composed of 8 bits is as follows.

[0100] [Table 1]

[0101]

[0102] As Figure 5 illustrated in the example of FIG. 10, up to nine 26-RUs can be allocated to a 20 MHz channel. When the RU allocation information of the common field 820 as illustrated in Table 1 is set to "00000000", nine 26-RUs can be allocated to the corresponding channel (i.e., 20 MHz). In addition, when the RU allocation information of the common field 820 as illustrated in Table 1 is set to "00000001", seven 26-RUs and one 52-RU are arranged in the corresponding channel. That is, in the example of Figure 5 , a 52-RU can be allocated to the rightmost side, and seven 26-RUs can be allocated to the left side thereof.

[0103] The example of Table 1 only illustrates some of the RU locations capable of showing the RU allocation information.

[0104] For example, the RU allocation information can include the example of Table 2 below.

[0105] [Table 2]

[0106]

[0107] "01000y2y1y0" refers to an example in which a 106-RU is allocated to the leftmost side of a 20 MHz channel and five 26-RUs are allocated to the right thereof. In this case, multiple STAs (e.g., user STAs) can be allocated to the 106-RU based on the MU-MIMO scheme. Specifically, up to 8 STAs (e.g., user STAs) can be allocated to the 106-RU, and the number of STAs (e.g., user STAs) allocated to the 106-RU is determined based on the 3-bit information (y2y1y0). For example, when the 3-bit information (y2y1y0) is set to N, the number of STAs (e.g., user STAs) allocated to the 106-RU based on the MU-MIMO scheme can be N+1.

[0108] Typically, multiple STAs (e.g., user STAs) that are different from each other can be assigned to multiple RUs. However, multiple STAs (e.g., user STAs) can be assigned to one or more RUs of at least a specific size (e.g., 106 subcarriers) based on the MU-MIMO scheme.

[0109] like Figure 8 As shown, the user-specific field 830 may include multiple user fields. As described above, the number of STAs (e.g., user STAs) assigned to a specific channel may be determined based on the RU allocation information of the common field 820. For example, when the RU allocation information of the common field 820 is "00000000", one user STA may be assigned to each of the nine 26-RUs (e.g., nine user STAs may be assigned). That is, up to nine user STAs may be assigned to a specific channel through the OFDMA scheme. In other words, up to nine user STAs may be assigned to a specific channel through a non-MU-MIMO scheme.

[0110] For example, when RU allocation is set to "01000y2y1y0", multiple STAs can be allocated to the 106-RU arranged on the leftmost side by the MU-MIMO scheme, and five user STAs can be allocated to the five 26-RUs arranged on its right side by the non-MU MIMO scheme. Figure 9 .

[0111] Figure 9 This section describes an example of allocating multiple user STAs to the same RU using the MU-MIMO scheme.

[0112] For example, when Figure 9When the RU allocation is set to "01000010," a 106-RU can be allocated to the leftmost side of a specific channel, and five 26-RUs can be allocated to its right. Furthermore, three user STAs can be allocated to the 106-RU using the MU-MIMO scheme. Consequently, since eight user STAs are allocated, the user-specific field 830 of the HE-SIG-B can include eight user fields.

[0113] Eight user fields can be pressed Figure 9 In addition, Figure 8 As shown, two user fields can be implemented using one user block field.

[0114] Figure 8 and Figure 9 The user field shown can be configured based on two formats. That is, the user field related to the MU-MIMO scheme can be configured in a first format, and the user field related to the non-MIMO scheme can be configured in a second format. Figure 9 For example, User Field 1 to User Field 3 may be based on the first format, and User Field 4 to User Field 8 may be based on the second format. The first format or the second format may include bit information of the same length (eg, 21 bits).

[0115] Each user field may have the same size (eg, 21 bits).For example, the user field of the first format (first MU-MIMO scheme) may be configured as follows.

[0116] For example, the first bits (i.e., B0-B10) in the user field (i.e., 21 bits) may include identification information (e.g., STA-ID, partial AID, etc.) of the user STA that allocates the corresponding user field. Furthermore, the second bits (i.e., B11-B14) in the user field (i.e., 21 bits) may include information related to the spatial configuration. Specifically, examples of the second bits (i.e., B11-B14) may be shown in Tables 3 and 4 below.

[0117] [Table 3]

[0118]

[0119] [Table 4]

[0120]

[0121] As shown in Table 3 and / or Table 4, the second bits (e.g., B11-B14) may include information related to the number of spatial streams allocated to multiple user STAs allocated based on the MU-MIMO scheme. Figure 9When three user STAs are allocated to 106-RU based on the MU-MIMO scheme, N_user is set to "3". Therefore, the values ​​of N_STS[1], N_STS[2], and N_STS[3] can be determined as shown in Table 3. For example, when the value of the second bit (B11-B14) is "0011", it can be set to N_STS[1]=4, N_STS[2]=1, N_STS[3]=1. That is, in Figure 9 In the example of , four spatial streams may be allocated to user field 1, one spatial stream may be allocated to user field 1, and one spatial stream may be allocated to user field 3.

[0122] As shown in the examples of Table 3 and / or Table 4, the information regarding the number of spatial streams for a user STA (i.e., the second bits, B11-B14) can consist of 4 bits. Furthermore, the information regarding the number of spatial streams for a user STA (i.e., the second bits, B11-B14) can support up to eight spatial streams. Furthermore, the information regarding the number of spatial streams for a user STA (i.e., the second bits, B11-B14) can support up to four spatial streams for one user STA.

[0123] In addition, the third bit (ie, B15-18) in the user field (ie, 21 bits) may include modulation and coding scheme (MCS) information. The MCS information may be applied to the data field in the PPDU including the corresponding SIG-B.

[0124] MCS, MCS information, MCS index, MCS field, etc. used in this specification may be indicated by an index value. For example, MCS information may be indicated by indexes 0 to 11. MCS information may include information related to constellation modulation types (e.g., BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM, 1024-QAM, etc.) and information related to coding rates (e.g., 1 / 2, 2 / 3, 3 / 4, 5 / 6e, etc.). Information related to channel coding types (e.g., LCC or LDPC) may not be included in the MCS information.

[0125] In addition, the fourth bit (ie, B19) in the user field (ie, 21 bits) may be a reserved field.

[0126] In addition, the fifth bit (i.e., B20) in the user field (i.e., 21 bits) may include information on the coding type (e.g., BCC or LDPC). That is, the fifth bit (i.e., B20) may include information on the type of channel coding (e.g., BCC or LDPC) applied to the data field in the PPDU including the corresponding SIG-B.

[0127] The above example relates to a user field in the first format (a format for the MU-MIMO scheme). An example of a user field in the second format (a format for a non-MU-MIMO scheme) is as follows.

[0128] The first bit (e.g., B0-B10) in the user field of the second format may include identification information of the user STA. In addition, the second bit (e.g., B11-B13) in the user field of the second format may include information related to the number of spatial streams applied to the corresponding RU. In addition, the third bit (e.g., B14) in the user field of the second format may include information related to whether a beamforming steering matrix is ​​applied. The fourth bit (e.g., B15-B18) in the user field of the second format may include modulation and coding scheme (MCS) information. In addition, the fifth bit (e.g., B19) in the user field of the second format may include information related to whether dual carrier modulation (DCM) is applied. In addition, the sixth bit (i.e., B20) in the user field of the second format may include information related to the coding type (e.g., BCC or LDPC).

[0129] Figure 10 UL-MU-based operations are shown. As shown, a transmitting STA (e.g., an AP) may perform channel access through contention (e.g., a backoff operation) and may transmit a trigger frame 1030. That is, the transmitting STA may transmit a PPDU including the trigger frame 1030. Upon receiving the PPDU including the trigger frame, a trigger-based (TB) PPDU is transmitted after a delay corresponding to SIFS.

[0130] The TB PPDUs 1041 and 1042 may be transmitted at the same time period and may be transmitted from a plurality of STAs (eg, user STAs) having the AID indicated in the trigger frame 1030. The ACK frame 1050 for the TB PPDU may be implemented in various forms.

[0131] Reference Figures 11 to 13 Describes the specific characteristics of the trigger frame. Even when using UL-MU communication, either the Orthogonal Frequency Division Multiple Access (OFDMA) scheme or the MU-MIMO scheme may be used, and both OFDMA and MU-MIMO schemes may be used simultaneously.

[0132] Figure 11 An example of a trigger frame is shown. Figure 11 The trigger frame allocates resources for uplink multi-user (MU) transmission and may be sent, for example, from an AP. The trigger frame may be configured by a MAC frame and may be included in a PPDU.

[0133] Figure 11Each field shown can be partially omitted, and another field can be added. In addition, the length of each field can be changed from that shown in the drawing.

[0134] Figure 11 The frame control field 1110 of the trigger frame can include information about a MAC protocol version and additional additional control information. The duration field 1120 can include time information of a NAV configuration or information about an identifier (e.g., AID) of a STA.

[0135] In addition, the RA field 1130 can include address information of a receiving STA of the corresponding trigger frame, and can be optionally omitted. The TA field 1140 can include address information of a STA (e.g., AP) that transmits the corresponding trigger frame. The common information field 1150 includes common control information applied to a receiving STA that receives the corresponding trigger frame. For example, a field indicating the length of an L-SIG field of an uplink PPDU transmitted in response to the corresponding trigger frame or information for controlling the contents of a SIG-A field (i.e., HE-SIG-A field) of the uplink PPDU transmitted in response to the corresponding trigger frame can be included. In addition, as the common control information, information about the length of a CP of the uplink PPDU transmitted in response to the corresponding trigger frame or information about the length of an LTF field can be included.

[0136] In addition, it is preferable to include per-user information field 1160#1 to 1160#N corresponding to the number of receiving STAs of the trigger frame. Figure 11 The per-user information field can also be referred to as an "allocation field."

[0137] In addition, Figure 11 The trigger frame can include a padding field 1170 and a frame check sequence field 1180.

[0138] Figure 11 Each of the per-user information fields 1160#1 to 1160#N shown can include a plurality of subfields.

[0139] Figure 12 An example of the common information field of the trigger frame is described. Figure 12 The subfields can be partially omitted, and additional subfields can be added. In addition, the length of each of the subfields shown can be changed.

[0140] The length field 1210 shown has the same value as the length field of the L-SIG field of the uplink PPDU transmitted in response to the corresponding trigger frame, and the length field of the L-SIG field of the uplink PPDU indicates the length of the uplink PPDU. As a result, the length field 1210 of the trigger frame can be used to indicate the length of the corresponding uplink PPDU.

[0141] In addition, the tandem identifier field 1220 indicates whether tandem operation is performed. Tandem operation means that downlink MU transmission and uplink MU transmission are performed together in the same TXOP. In other words, it means that downlink MU transmission is performed, and then uplink MU transmission is performed after a preset time (e.g., SIFS). During tandem operation, only one transmitting device (e.g., an AP) can perform downlink communication, and multiple transmitting devices (e.g., non-APs) can perform uplink communication.

[0142] The CS request field 1230 indicates whether a wireless medium status or NAV, etc. must be considered in case that a reception device that has received a corresponding trigger frame transmits a corresponding uplink PPDU.

[0143] The HE-SIG-A information field 1240 may include information for controlling the content of the SIG-A field (ie, HE-SIG-A field) of the uplink PPDU in response to the corresponding trigger frame.

[0144] The CP and LTF type field 1250 may include information about the CP length and LTF length of the uplink PPDU sent in response to the corresponding trigger frame. The trigger type field 1260 may indicate the purpose of using the corresponding trigger frame, such as a typical trigger, a beamforming trigger, a request for block ACK / NACK, etc.

[0145] It can be assumed that the trigger type field 1260 of the trigger frame in this specification indicates a basic type of trigger frame for typical triggering. For example, the basic type of trigger frame can be referred to as a basic trigger frame.

[0146] Figure 13 An example of subfields included in the per-user information field is described. Figure 13 The user information field 1300 can be understood as the above reference Figure 11 Any of the mentioned per-user information fields 1160#1 to 1160#N. Included in Figure 13 The subfields in the user information field 1300 may be partially omitted, and additional subfields may be added. In addition, the lengths of the various subfields shown may be changed.

[0147] Figure 13 The user identifier field 1310 indicates an identifier of the STA (ie, the receiving STA) corresponding to the per-user information. An example of the identifier may be all or part of the association identifier (AID) value of the receiving STA.

[0148] In addition, the RU allocation field 1320 may be included. That is, when the receiving STA identified by the user identifier field 1310 transmits a TB PPDU in response to the trigger frame, the TB PPDU is transmitted through the RU indicated by the RU allocation field 1320. In this case, the RU indicated by the RU allocation field 1320 may be Figure 5 、 Figure 6 and Figure 7 RU shown.

[0149] Figure 13 The subfield of the TB PPDU may include a coding type field 1330. The coding type field 1330 may indicate the coding type of the TB PPDU. For example, when BCC coding is applied to the TB PPDU, the coding type field 1330 may be set to "1", and when LDPC coding is applied, the coding type field 1330 may be set to "0".

[0150] in addition, Figure 13 The subfield of the 1340 may include an MCS field 1340. The MCS field 1340 may indicate the MCS scheme applied to the TB PPDU. For example, when BCC coding is applied to the TB PPDU, the coding type field 1330 may be set to "1", and when LDPC coding is applied, the coding type field 1330 may be set to "0".

[0151] Hereinafter, a UL OFDMA-based random access (UORA) scheme will be described.

[0152] Figure 14 Describe the technical features of the UORA solution.

[0153] The sending STA (e.g., AP) can Figure 14 Specifically, the AP may allocate the first RU resource (AID 0, RU 1), the second RU resource (AID 0, RU 2), the third RU resource (AID 0, RU 3), the fourth RU resource (AID 2045, RU 4), ​​the fifth RU resource (AID 2045, RU 5), and the sixth RU resource (AID 3, RU 6). Information related to AID 0, AID 3, or AID 2045 may be included in, for example, Figure 13 The information related to RU 1 to RU 6 may be included in the user identifier field 1310. Figure 13 RU allocation field 1320. AID=0 may mean UORA resources for associated STAs, and AID=2045 may mean UORA resources for non-associated STAs. Figure 14 The 1st to 3rd RU resources can be used as UORA resources for associated STAs. Figure 14 The 4th RU resource and the 5th RU resource can be used as UORA resources for non-associated STAs. Figure 14 The 6th RU resources may be used as typical resources for UL MU.

[0154] exist Figure 14 In the example, STA1's OFDMA random access backoff (OBO) is reduced to 0, and STA1 randomly selects the second RU resource (AID 0, RU 2). In addition, since STA2 / 3's OBO counter is greater than 0, no uplink resources are allocated to STA2 / 3. Figure 14 For STA4 in FIG, since the AID of STA4 (eg, AID=3) is included in the trigger frame, resources of RU 6 are allocated without backoff.

[0155] Specifically, due to Figure 14 STA1 is the associated STA, so the total number of eligible RA RUs for STA1 is 3 (RU1, RU2 and RU3), so STA1 decrements the OBO counter by 3 to make the OBO counter 0. In addition, since Figure 14 STA2 is the associated STA, so the total number of eligible RA RUs for STA2 is 3 (RU 1, RU 2 and RU 3), so STA2 decrements the OBO counter by 3, but the OBO counter is greater than 0. In addition, since Figure 14 STA3 is a non-associated STA, so the total number of eligible RA RUs for STA3 is 2 (RU 4, RU 5), and therefore STA3 decrements the OBO counter by 2, but the OBO counter is greater than 0.

[0156] Figure 15 Illustrate examples of channels used / supported / defined in the 2.4 GHz band.

[0157] The 2.4 GHz band may be referred to as other terms such as a first frequency band. Additionally, the 2.4 GHz band may refer to a frequency domain that uses / supports / defines channels with center frequencies close to 2.4 GHz (eg, channels with center frequencies within 2.4 to 2.5 GHz).

[0158] Multiple 20 MHz channels may be included in the 2.4 GHz band. 20 MHz within 2.4 GHz may have multiple channel indices (e.g., index 1 to index 14). For example, the center frequency of a 20 MHz channel assigned with channel index 1 may be 2.412 GHz, the center frequency of a 20 MHz channel assigned with channel index 2 may be 2.417 GHz, and the center frequency of a 20 MHz channel assigned with channel index N may be (2.407+0.005*N) GHz. Channel indices may be referred to by various terms such as channel numbers. The specific values ​​of channel indices and center frequencies may vary.

[0159] Figure 15 An example is given of four channels within the 2.4 GHz frequency band. Each of the first frequency domain 1510 to the fourth frequency domain 1540 shown herein may include one channel. For example, the first frequency domain 1510 may include channel 1 (a 20 MHz channel with index 1). In this case, the center frequency of channel 1 may be set to 2412 MHz. The second frequency domain 1520 may include channel 6. In this case, the center frequency of channel 6 may be set to 2437 MHz. The third frequency domain 1530 may include channel 11. In this case, the center frequency of channel 11 may be set to 2462 MHz. The fourth frequency domain 1540 may include channel 14. In this case, the center frequency of channel 14 may be set to 2484 MHz.

[0160] Figure 16 Illustrate examples of channels used / supported / defined in the 5 GHz band.

[0161] The 5 GHz frequency band may be referred to by other terms such as a second frequency band. The 5 GHz frequency band may refer to a frequency domain that uses / supports / defines channels with a center frequency greater than or equal to 5 GHz and less than 6 GHz (or less than 5.9 GHz). Alternatively, the 5 GHz frequency band may include multiple channels between 4.5 GHz and 5.5 GHz. Figure 16 The specific values ​​shown may be changed.

[0162] Multiple channels within the 5 GHz band include Unlicensed National Information Infrastructure (UNII)-1, UNII-2, UNII-3, and ISM. UNII-1 can be referred to as UNII Low. UNII-2 can include frequency domains called UNII Mid and UNII-2 Extended. UNII-3 can be referred to as UNII Upper.

[0163] A plurality of channels can be configured within the 5 GHz band, and the bandwidth of each channel can be variously set to, for example, 20 MHz, 40 MHz, 80 MHz, 160 MHz, etc. For example, the 5170 MHz to 5330 MHz frequency domain / range within UNII-1 and UNII-2 can be divided into eight 20 MHz channels. The 5170 MHz to 5330 MHz frequency domain / range can be divided into four channels by a 40 MHz frequency domain. The 5170 MHz to 5330 MHz frequency domain / range can be divided into two channels by an 80 MHz frequency domain. Alternatively, the 5170 MHz to 5330 MHz frequency domain / range can be divided into one channel by a 160 MHz frequency domain.

[0164] Figure 17 An example of a channel that is used / supported / defined within the 6 GHz band is explained.

[0165] The 6 GHz band can be referred to as other terms such as a third band, etc. The 6 GHz band can mean a frequency domain using / supporting / defining a channel having a center frequency greater than or equal to 5.9 GHz. Figure 17 The specific numerical values shown can be changed.

[0166] For example, Figure 17 The 20 MHz channel of the 5.9 GHz band can be defined from 5.940 GHz. Specifically, among the 20 MHz channels of the 5.9 GHz band, Figure 17 Among the 20 MHz channels of the 5.9 GHz band, the leftmost channel can have an index 1 (or a channel index, a channel number, etc.), and 5.945 GHz can be assigned as a center frequency. That is, the center frequency of the channel of index N can be determined as (5.940 + 0.005*N) GHz.

[0167] Therefore, Figure 17 The index (or channel number) of the 2 MHz channel of the 5.9 GHz band can be 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233. In addition, according to the above (5.940 + 0.005*N) GHz rule, Figure 17The indices of the 40 MHz channels can be 3, 11, 19, 27, 35, 43, 51, 59, 67, 75, 83, 91, 99, 107, 115, 123, 131, 139, 147, 155, 163, 171, 179, 187, 195, 203, 211, 219, 227.

[0168] Despite Figure 17 20, 40, 80, and 160 MHz channels are illustrated in the example, but a 240 MHz channel or a 320 MHz channel may be added in addition.

[0169] Hereinafter, the PPDU transmitted / received in the STA of this specification will be described.

[0170] Figure 18 An example of PPDU used in this specification is described.

[0171] Figure 18 The PPDU of the present invention may be referred to by various terms such as EHT PPDU, TX PPDU, RX PPDU, first type or Nth type PPDU, etc. For example, in this specification, PPDU or EHT PPDU may be referred to by various terms such as TX PPDU, RX PPDU, first type or Nth type PPDU, etc. In addition, the EHT PPDU may be used in the EHT system and / or a new WLAN system enhanced from the EHT system.

[0172] Figure 18 The PPDU may indicate all or part of the PPDU type used in the EHT system. For example, Figure 18 The example of can be used for both single user (SU) mode and multi user (MU) mode. In other words, Figure 18 The PPDU may be for one receiving STA or multiple receiving STAs. Figure 18 When the PPDU is used in trigger-based (TB) mode, it can be omitted Figure 18 In other words, a STA that has received a trigger frame for uplink MU (UL-MU) may send an EHT-SIG in Figure 18 In the example, the PPDU of EHT-SIG is omitted.

[0173] exist Figure 18 In the physical layer, L-STF to EHT-LTF may be referred to as a preamble or a physical preamble and may be generated / sent / received / obtained / decoded in the physical layer.

[0174] You can Figure 18The subcarrier spacing of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and EHT-SIG fields is determined to be 312.5 kHz, and the subcarrier spacing of the EHT-STF, EHT-LTF, and data fields can be determined to be 78.125 kHz. That is, the tone index (or subcarrier index) of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and EHT-SIG fields can be expressed in units of 312.5 kHz, and the tone index (or subcarrier index) of the EHT-STF, EHT-LTF, and data fields can be expressed in units of 78.125 kHz.

[0175] exist Figure 18 In the PPDU, L-LTF and L-STF can be the same as those in the regular fields.

[0176] Figure 18 The L-SIG field may include, for example, 24 bits of information. For example, the 24 bits of information may include a 4-bit rate field, a 1-bit reserved bit, a 12-bit length field, a 1-bit parity bit, and 6-bit tail bits. For example, the 12-bit length field may include information related to the length or duration of the PPDU. For example, the 12-bit length field may be determined based on the PPDU type. For example, when the PPDU is a non-HT, HT, VHT PPDU, or EHT PPDU, the length field value may be determined as a multiple of 3. For example, when the PPDU is an HE PPDU, the length field value may be determined as "a multiple of 3" + 1 or "a multiple of 3" + 2. In other words, for a non-HT, HT, VHT PPDU, or EHT PPDU, the length field value may be determined as a multiple of 3, and for an HE PPDU, the length field value may be determined as "a multiple of 3" + 1 or "a multiple of 3" + 2.

[0177] For example, the transmitting STA may apply BCC encoding based on a coding rate of 1 / 2 to the 24-bit information of the L-SIG field. Thereafter, the transmitting STA may obtain 48 bits of BCC coded bits. BPSK modulation may be applied to the 48-bit coded bits, thereby generating 48 BPSK symbols. The transmitting STA may map the 48 BPSK symbols to locations other than the pilot subcarriers {subcarrier indices -21, -7, +7, +21} and the DC subcarrier {subcarrier index 0}. As a result, the 48 BPSK symbols may be mapped to subcarrier indices -26 to -22, -20 to -8, -6 to -1, +1 to +6, +8 to +20, and +22 to +26. The transmitting STA may additionally map the signal {-1, -1, -1, 1} to subcarrier indices {-28, -27, +27, +28}. The aforementioned signal may be used for channel estimation in the frequency domain corresponding to {-28, -27, +27, +28}.

[0178] The transmitting STA can generate the RL-SIG in the same manner as the L-SIG. BPSK modulation can be applied to the RL-SIG. Based on the presence of the RL-SIG, the receiving STA can know whether the RX PPDU is a HE PPDU or an EHT PPDU.

[0179] Universal SIG (U-SIG) can be inserted in Figure 18 The U-SIG can be referred to by various terms such as first SIG field, first SIG, first type SIG, control signal, control signal field, first (type) control signal, etc.

[0180] The U-SIG may include N bits of information and may include information for identifying the type of the EHT PPDU. For example, the U-SIG may be configured based on two symbols (e.g., two consecutive OFDM symbols). Each symbol used for the U-SIG (e.g., OFDM symbol) may have a duration of 4 μs. Each symbol of the U-SIG may be used to transmit 26 bits of information. For example, each symbol of the U-SIG may be transmitted / received based on 52 data tones and 4 pilot tones.

[0181] A bit information (e.g., 52 un-encoded bits) can be transmitted, for example, through the U-SIG (or U-SIG field). The first symbol of the U-SIG can transmit the first X bits of the A bit information (e.g., 26 un-encoded bits), and the second symbol of the U-SIG can transmit the remaining Y bits of the A bit information (e.g., 26 un-encoded bits). For example, a transmitting STA can obtain the 26 un-encoded bits included in each U-SIG symbol. The transmitting STA can perform convolutional encoding (i.e., BCC encoding) based on a rate of R = 1 / 2 to generate 52 encoded bits, and can perform interleaving on the 52 encoded bits. The transmitting STA can perform BPSK modulation on the interleaved 52 encoded bits to generate 52 BPSK symbols to be allocated to each U-SIG symbol. One U-SIG symbol can be transmitted based on 65 tones (subcarriers) from subcarrier index -28 to subcarrier index +28, except for the DC index 0. The 52 BPSK symbols generated by the transmitting STA can be transmitted based on the remaining tones (subcarriers) except for the pilot tones, i.e., tones -21, -7, +7, +21.

[0182] For example, the A bit information (e.g., 52 un-encoded bits) generated by the U-SIG can include a CRC field (e.g., a field having a length of 4 bits) and a tail field (e.g., a field having a length of 6 bits). The CRC field and the tail field can be transmitted through the second symbol of the U-SIG. The CRC field can be generated based on the 26 bits allocated to the first symbol of the U-SIG and the remaining 16 bits in the second symbol except for the CRC / tail field, and can be generated based on a conventional CRC calculation algorithm. In addition, the tail field can be used to terminate a trellis of a convolutional decoder, and can be set to, for example, "000000".

[0183] The A bit information (e.g., 52 un-encoded bits) transmitted by the U-SIG (or U-SIG field) can be divided into version-independent bits and version-dependent bits. For example, the version-independent bits can have a fixed or variable size. For example, the version-independent bits can be allocated only to the first symbol of the U-SIG, or the version-independent bits can be allocated to both the first symbol and the second symbol of the U-SIG. For example, the version-independent bits and the version-dependent bits can be referred to in various terms such as first control bits, second control bits, etc.

[0184] For example, the version-independent bits of the U-SIG may include a 3-bit PHY version identifier. For example, the 3-bit PHY version identifier may include information related to the PHY version of the TX / RX PPDU. For example, a first value of the 3-bit PHY version identifier may indicate that the TX / RX PPDU is an EHT PPDU. In other words, when a transmitting STA transmits an EHT PPDU, the 3-bit PHY version identifier may be set to the first value. In other words, a receiving STA may determine that the RX PPDU is an EHT PPDU based on the PHY version identifier having the first value.

[0185] For example, the version-independent bits of the U-SIG may include a 1-bit UL / DL Flag field, wherein a first value of the 1-bit UL / DL Flag field is associated with UL communication, and a second value of the UL / DL Flag field is associated with DL communication.

[0186] For example, the version-independent bits of the U-SIG may include information related to the TXOP length and information related to the BSS color ID.

[0187] For example, when the EHT PPDU is divided into various types (for example, various types such as EHT PPDU related to SU mode, EHT PPDU related to MU mode, EHT PPDU related to TB mode, EHT PPDU related to extended range transmission, etc.), information related to the type of the EHT PPDU may be included in the version-related bit of the U-SIG.

[0188] For example, the U-SIG may include: 1) a bandwidth field including information related to the bandwidth; 2) a field including information related to the MCS scheme applied to the EHT-SIG; 3) an indication field including information related to whether the dual subcarrier modulation (DCM) scheme is applied to the EHT-SIG; 4) a field including information related to the number of symbols used for the EHT-SIG; 5) a field including information related to whether the EHT-SIG is generated across the entire frequency band; 6) a field including information related to the type of the EHT-LTF / STF; and 7) information related to a field indicating the EHT-LTF length and the CP length.

[0189] Can Figure 18 Preamble puncturing is applied to the PPDU. Preamble puncturing implies that puncturing is applied to a portion of the full band (e.g., the secondary 20 MHz band). For example, when transmitting an 80 MHz PPDU, the STA may apply puncturing to the secondary 20 MHz band within the 80 MHz band and may transmit the PPDU only over the primary 20 MHz band and the secondary 40 MHz band.

[0190] For example, the pattern of the preamble puncture can be preconfigured. For example, when the first puncture pattern is applied, puncture can be applied only to the auxiliary 20 MHz band within the 80 MHz band. For example, when the second puncture pattern is applied, puncture can be applied only to any one of the two auxiliary 20 MHz bands in the auxiliary 40 MHz band included in the 80 MHz band. For example, when the third puncture pattern is applied, puncture can be applied only to the auxiliary 20 MHz band in the main 80 MHz band included in the 160 MHz band (or 80+80 MHz band). For example, when the fourth puncture pattern is applied, puncture can be applied to at least one 20 MHz channel that does not belong to the main 40 MHz band in the 80 MHz band included in the 160 MHz band (or 80+80 MHz band) when the main 40 MHz band exists.

[0191] Information related to preamble puncturing applied to the PPDU may be included in the U-SIG and / or EHT-SIG. For example, the first field of the U-SIG may include information related to the contiguous bandwidth, and the second field of the U-SIG may include information related to the preamble puncturing applied to the PPDU.

[0192] For example, based on the following method, the U-SIG and the EHT-SIG may include information related to the preamble puncture. When the bandwidth of the PPDU exceeds 80 MHz, the U-SIG can be configured separately in units of 80 MHz. For example, when the bandwidth of the PPDU is 160 MHz, the PPDU may include a first U-SIG for a first 80 MHz band and a second U-SIG for a second 80 MHz band. In this case, the first field of the first U-SIG may include information related to the 160 MHz bandwidth, and the second field of the first U-SIG may include information related to the preamble puncture applied to the first 80 MHz band (i.e., information related to the preamble puncture pattern). In addition, the first field of the second U-SIG may include information related to the 160 MHz bandwidth, and the second field of the second U-SIG may include information related to the preamble puncture applied to the second 80 MHz band (i.e., information related to the preamble puncture pattern). At the same time, the EHT-SIG continuous with the first U-SIG may include information related to the preamble puncturing applied to the second 80 MHz band (i.e., information related to the preamble puncturing pattern), and the EHT-SIG continuous with the second U-SIG may include information related to the preamble puncturing applied to the first 80 MHz band (i.e., information related to the preamble puncturing pattern).

[0193] Additionally or alternatively, the U-SIG and EHT-SIG may include information related to preamble puncturing based on the following method. The U-SIG may include information related to preamble puncturing for all frequency bands (i.e., information related to the preamble puncturing pattern). That is, the EHT-SIG may not include information related to preamble puncturing, and only the U-SIG may include information related to preamble puncturing (i.e., information related to the preamble puncturing pattern).

[0194] The U-SIG can be configured in 20MHz units. For example, when an 80MHz PPDU is configured, the U-SIG can be duplicated. That is, four identical U-SIGs can be included in an 80MHz PPDU. PPDUs with bandwidth exceeding 80MHz can include different U-SIGs.

[0195] Figure 18 The EHT-SIG in the U-SIG may include control information for receiving STAs. The EHT-SIG may be transmitted through at least one symbol, and one symbol may have a length of 4 μs. Information related to the number of symbols used for the EHT-SIG may be included in the U-SIG.

[0196] The EHT-SIG may include reference Figure 8 and Figure 9 For example, the EHT-SIG may include the following: Figure 8 The common field and the user-specific field in the example of . The common field of EHT-SIG can be omitted, and the number of user-specific fields can be determined based on the number of users.

[0197] As in Figure 8 In the example of , the common field of EHT-SIG and the user-specific field of EHT-SIG can be encoded separately. One user block field included in the user-specific field can include information for two users, but the last user block field included in the user-specific field can include information for one user. That is, one user block field of EHT-SIG can include a maximum of two user fields. Figure 9 In the example of , each user field may be associated with a MU-MIMO allocation or may be associated with a non-MU-MIMO allocation.

[0198] As in Figure 8 In the example of , the common field of the EHT-SIG may include a CRC bit and a tail bit. The length of the CRC bit may be determined to be 4 bits. The length of the tail bit may be determined to be 6 bits and may be set to "000000".

[0199] As in Figure 8 In the example of , the common field of EHT-SIG may include RU allocation information. RU allocation information may imply information related to the positions of RUs to which multiple users (i.e., multiple receiving STAs) are allocated. RU allocation information can be configured in units of 8 bits (or N bits), as shown in Table 1.

[0200] The examples in Tables 5 to 7 are examples of 8-bit (or N-bit) information for various RU allocations. The index shown in each table may be modified, some entries in Tables 5 to 7 may be omitted, and entries may be added (not shown).

[0201] The examples of Tables 5 to 7 relate to information related to the location of RUs allocated to the 20 MHz band. For example, "index 0" of Table 5 may be in the case of individually allocating nine 26-RUs (e.g., Figure 5 Nine 26-RU cases shown in the figure were used.

[0202] In addition, multiple RUs can be allocated to one STA in the EHT system. For example, with respect to "Index 60" in Table 6, one 26-RU can be allocated to the leftmost user (i.e., receiving STA) of the 20 MHz band, one 26-RU and one 52-RU can be allocated to the right, and five 26-RUs can be allocated to the right.

[0203] [Table 5]

[0204]

[0205] [Table 6]

[0206]

[0207] [Table 7]

[0208]

[0209] A mode in which the common fields of the EHT-SIG are omitted may be supported. The mode in which the common fields of the EHT-SIG are omitted may be referred to as compressed mode. When compressed mode is used, multiple users (i.e., multiple receiving STAs) may decode the PPDU (e.g., the data field of the PPDU) based on non-OFDMA. That is, multiple users of the EHT PPDU may decode the PPDU (e.g., the data field of the PPDU) received via the same frequency band. In addition, when non-compressed mode is used, multiple users of the EHT PPDU may decode the PPDU (e.g., the data field of the PPDU) based on OFDMA. That is, multiple users of the EHT PPDU may receive the PPDU (e.g., the data field of the PPDU) via different frequency bands.

[0210] The EHT-SIG can be configured based on various MCS schemes. As described above, information related to the MCS scheme applied to the EHT-SIG can be included in the U-SIG. The EHT-SIG can be configured based on the DCM scheme. For example, among the N data tones (e.g., 52 data tones) allocated for the EHT-SIG, a first modulation scheme can be applied to half of the continuous tones, and a second modulation scheme can be applied to the remaining half of the continuous tones. That is, the transmitting STA can use the first modulation scheme to modulate specific control information using the first symbol and allocate it to half of the continuous tones, and can use the second modulation scheme to modulate the same control information using the second symbol and allocate it to the remaining half of the continuous tones. As described above, information (e.g., a 1-bit field) about whether the DCM scheme is applied to the EHT-SIG can be included in the U-SIG.

[0211] Figure 18 The HE-STF can be used to improve automatic gain control estimation in a multiple-input multiple-output (MIMO) environment or an OFDMA environment. Figure 18 The HE-LTF can be used to estimate the channel in a MIMO environment or an OFDMA environment.

[0212] Can be set according to various types Figure 18 EHT-STF. For example, a first type of STF (e.g., 1x STF) can be generated based on a first type of STF sequence in which non-zero coefficients are arranged at intervals of 16 subcarriers. The STF signal generated based on the first type of STF sequence can have a period of 0.8 μs, and the periodic signal of 0.8 μs can be repeated 5 times to become a first type of STF with a length of 4 μs. For example, a second type of STF (e.g., 2x STF) can be generated based on a second type of STF sequence in which non-zero coefficients are arranged at intervals of 8 subcarriers. The STF signal generated based on the second type of STF sequence can have a period of 1.6 μs, and the periodic signal of 1.6 μs can be repeated 5 times to become a second type of STF with a length of 8 μs. Hereinafter, an example of a sequence for configuring EHT-STF (i.e., an EHT-STF sequence) is proposed. The following sequence can be modified in various ways.

[0213] The EHT-STF may be configured based on the following sequence M.

[0214] <Formula 1>

[0215] M={–1,–1,–1,1,1,1,–1,1,1,1,–1,1,1,–1,1}

[0216] The EHT-STF for a 20MHz PPDU can be configured based on the following formula. The following example may be a first type (i.e., 1x STF) sequence. For example, the first type sequence may be included in an EHT-PPDU that is not a triggered (TB) PPDU. In the following formula, (a:b:c) may imply the duration of b tone intervals (i.e., subcarrier intervals) defined as from tone index (i.e., subcarrier index) 'a' to tone index 'c'. For example, the following formula 2 may represent a sequence defined as 16 tone intervals from tone index -112 to tone index 112. Since a subcarrier spacing of 78.125kHz is applied to EHT-STR, the 16 tone intervals may imply that the EHT-STF coefficients (or elements) are arranged at intervals of 78.125*16=1250kHz. In addition, * implies multiplication, and sqrt() implies square root. In addition, j implies an imaginary number.

[0217] <Formula 2>

[0218] EHT-STF(-112:16:112)={M}*(1+j) / sqrt(2)

[0219] EHT-STF(0)=0

[0220] The EHT-STF for a 40 MHz PPDU may be configured based on the following equation: The following example may be a first type (ie, 1x STF) sequence.

[0221] <Formula 3>

[0222] EHT-STF(-240:16:240)={M,0,-M}*(1+j) / sqrt(2)

[0223] The EHT-STF for 80 MHz PPDU may be configured based on the following equation: The following example may be a first type (ie, 1x STF) sequence.

[0224] <Formula 4>

[0225] EHT-STF(-496:16:496)={M,1,–M,0,–M,1,–M}*(1+j) / sqrt(2)

[0226] The EHT-STF for 160 MHz PPDU may be configured based on the following equation: The following example may be a first type (ie, 1x STF) sequence.

[0227] <Formula 5>

[0228] EHT-STF(-1008:16:1008)={M,1,–M,0,–M,1,–M,0,–M,–1,M,0,–M,1,–M}*(1+j) / sqrt(2)

[0229] In the EHT-STF for 80+80 MHz PPDU, the sequence for the lower 80 MHz may be the same as Equation 4. In the EHT-STF for 80+80 MHz PPDU, the sequence for the upper 80 MHz may be configured based on the following equation.

[0230] <Formula 6>

[0231] EHT-STF(-496:16:496)={-M,-1,M,0,–M,1,–M}*(1+j) / sqrt(2)

[0232] The following Equations 7 to 11 are related to an example of the second type (ie, 2x STF) sequence.

[0233] <Formula 7>

[0234] EHT-STF(-120:8:120)={M,0,-M}*(1+j) / sqrt(2)

[0235] The EHT-STF for 40 MHz PPDU may be configured based on the following equation.

[0236] <Formula 8>

[0237] EHT-STF(-248:8:248)={M,–1,–M,0,M,–1,M}*(1+j) / sqrt(2)

[0238] EHT-STF(-248)=0

[0239] EHT-STF(248)=0

[0240] The EHT-STF for 80 MHz PPDU may be configured based on the following formula.

[0241] <Formula 9>

[0242] EHT-STF(-504:8:504)={M,–1,M,–1,–M,–1,M,0,–M,1,M,1,–M,1,–M}*(1+j) / sqrt(2)

[0243] The EHT-STF for 160 MHz PPDU may be configured based on the following formula.

[0244] <Formula 10>

[0245] EHT-STF(-1016:16:1016)={M,–1,M,–1,–M,–1,M,0,–M,1,M,1,–M,1,–M,0,–M,1,–M,1,M,1,–M,0,–M,1,M,1,–M,1,–M}*(1+j) / sqrt(2)

[0246] EHT-STF(-8)=0,EHT-STF(8)=0,

[0247] EHT-STF(-1016)=0,EHT-STF(1016)=0

[0248] In the EHT-STF for 80+80 MHz PPDU, the sequence for the lower 80 MHz may be the same as Equation 9. In the EHT-STF for 80+80 MHz PPDU, the sequence for the upper 80 MHz may be configured based on the following equation.

[0249] <Formula 11>

[0250] EHT-STF(-504:8:504)={–M,1,–M,1,M,1,–M,0,–M,1,M,1,–M,1,–M}*(1+j) / sqrt(2)

[0251] EHT-STF(-504)=0,

[0252] EHT-STF(504)=0

[0253] EHT-LTF can have first, second, and third types (i.e., 1x, 2x, 4x LTF). For example, the first / second / third type LTF can be generated based on an LTF sequence in which non-zero coefficients are arranged at intervals of 4 / 2 / 1 subcarriers. The first / second / third type LTF can have a time length of 3.2 / 6.4 / 12.8 μs. In addition, GIs of various lengths (e.g., 0.8 / 1 / 6 / 3.2 μs) can be applied to the first / second / third type LTF.

[0254] Information about the type of STF and / or LTF (and also about the GI applied to the LTF) may be included in Figure 18 SIG-A field and / or SIG-B field, etc.

[0255] Can be based on Figure 5 and Figure 6 Example to configure Figure 18 PPDU (e.g., EHT-PPDU).

[0256] For example, based on Figure 5 RU to configure the EHT PPDU sent on the 20MHz band, that is, 20MHz EHTPPDU. Figure 5 The positions of RUs that determine the EHT-STF, EHT-LTF, and data fields included in the EHT PPDU are shown in FIG.

[0257] Can be based on Figure 6 The RU of the 40MHz band is configured to send an EHT PPDU, i.e., a 40MHz EHT PPDU. Figure 6 The positions of RUs that determine the EHT-STF, EHT-LTF, and data fields included in the EHT PPDU are shown in FIG.

[0258] because Figure 6 The RU position corresponds to 40MHz, so it can be Figure 6 The tone plan for 80MHz is determined when the pattern of Figure 7 RU but Figure 6 The RU repeats the new tone schedule twice to send the 80MHz EHT PPDU.

[0259] when Figure 6 When the pattern is repeated twice, 23 tones (i.e., 11 guard tones + 12 guard tones) can be configured in the DC region. That is, the tone plan for an 80 MHz EHT PPDU allocated based on OFDMA can have 23 DC tones. In contrast, an 80 MHz EHT PPDU allocated based on non-OFDMA (i.e., a non-OFDMA full-bandwidth 80 MHz PPDU) can be configured based on a 996-RU and can include 5 DC tones, 12 left guard tones, and 11 right guard tones.

[0260] Can Figure 6 The pattern is repeated several times in such a way that the tone plans for 160 / 240 / 320MHz are configured.

[0261] The following method can be used to Figure 18 The PPDU is determined (or identified) as an EHT PPDU.

[0262] The receiving STA may determine the type of the RX PPDU as an EHT PPDU based on the following aspects. For example, 1) when the first symbol after the L-LTF signal of the RX PPDU is a BPSK symbol; 2) when an RL-SIG in which the L-SIG of the RX PPDU is repeated is detected; and 3) when it is detected that the result of applying "modulo 3" to the value of the length field of the L-SIG of the RX PPDU is "0", the RX PPDU may be determined to be an EHT PPDU. When the RX PPDU is determined to be an EHT PPDU, the receiving STA may determine the type of the RX PPDU as an EHT PPDU based on Figure 18 The type of the EHT PPDU (e.g., SU / MU / triggered-based / extended range type) can be detected based on the bit information included in the symbol following the RL-SIG of the RX PPDU. In other words, the receiving STA can determine that the RX PPDU is an EHT PPDU based on the following: 1) the first symbol after the L-LTF signal, which is a BPSK symbol; 2) the RL-SIG that is consecutive to and identical to the L-SIG field; 3) the L-SIG including the length field, in which the result of applying "modulo 3" is set to "0"; and 4) the 3-bit PHY version identifier of the aforementioned U-SIG (e.g., a PHY version identifier having a first value).

[0263] For example, the receiving STA may determine the type of the RX PPDU as an EHT PPDU based on the following factors: 1) when the first symbol after the L-LTF signal is a BPSK symbol; 2) when an RL-SIG in which the L-SIG is repeated is detected; and 3) when the result of applying "modulo 3" to the length field value of the L-SIG is detected to be "1" or "2", the RX PPDU may be determined as a HEPPDU.

[0264] For example, the receiving STA may determine the type of the RX PPDU as non-HT, HT, or VHT PPDU based on the following factors. For example, 1) when the first symbol after the L-LTF signal is a BPSK symbol; and 2) when the RL-SIG in which the L-SIG is repeated is not detected, the RX PPDU may be determined as non-HT, HT, or VHT PPDU. Furthermore, even if the receiving STA detects repeated RL-SIGs, if the result of applying "modulo 3" to the length value of the L-SIG is "0," the RX PPDU may be determined as non-HT, HT, or VHT PPDU.

[0265] In the following examples, signals represented as (TX / RX / UL / DL) signals, (TX / RX / UL / DL) frames, (TX / RX / UL / DL) packets, (TX / RX / UL / DL) data units, (TX / RX / UL / DL) data, etc. may be based on Figure 18PPDU transmission / reception signal. Figure 18 The PPDU can be used to send / receive various types of frames. For example, Figure 18 The PPDU can be used for control frames. Examples of control frames may include Request to Send (RTS), Clear to Send (CTS), Power Save Poll (PS-poll), BlockACKReq, BlockAck, Null Data Packet (NDP) notifications, and trigger frames. For example, Figure 18 The PPDU can be used for management frames. Examples of management frames may include beacon frames, (re)association request frames, (re)association response frames, probe request frames, and probe response frames. For example, Figure 18 The PPDU can be used for data frames. For example, Figure 18 The PPDU may be used to simultaneously transmit at least two or more of a control frame, a management frame, and a data frame.

[0266] Figure 19 An example of a modified transmission device and / or reception device of the present specification will be described.

[0267] Figure 1 Each device / STA of sub-graph (a) / (b) can be modified as follows Figure 19 shown. Figure 19 The transceiver 630 can be used with Figure 1 The transceivers 113 and 123 are the same. Figure 19 The transceiver 630 may include a receiver and a transmitter.

[0268] Figure 19 The processor 610 can be used with Figure 1 The processors 111 and 121 are the same. Alternatively, Figure 19 The processor 610 can be used with Figure 1 The processing chips 114 and 124 are the same.

[0269] Figure 19 The memory 620 can be used with Figure 1 The memories 112 and 122 are the same. Alternatively, Figure 19 The memory 620 may be Figure 1 The memories 112 and 122 are different separate external memories.

[0270] Reference Figure 19, power management module 611 manages power for processor 610 and / or transceiver 630. Battery 612 supplies power to power management module 611. Display 613 outputs results processed by processor 610. Keypad 614 receives input to be used by processor 610. Keypad 614 may be displayed on display 613. SIM card 615 may be an integrated circuit for securely storing an International Mobile Subscriber Identity (IMSI) and its associated keys, which are used to identify and authenticate users on mobile phone devices (e.g., mobile phones and computers).

[0271] Reference Figure 19 , the speaker 640 may output a result related to the sound processed by the processor 610. The microphone 641 may receive an input related to the sound to be used by the processor 610.

[0272] The 20 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0273] HELTF -122，122 ={0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0 ,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,0,+1,0,0,0,-1,0,0,0, 0,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,0,+1,0,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0 ,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0}

[0274] The 40 MHz Band 1x HE-LTF specified in existing 802.11ax (i.e., HE) is as follows.

[0275] HE-LTF -244，244＝{+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，0，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,0,+1,0,0,0,0,+1,0,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1},

[0276] The 80 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0277] 80MHz:

[0278] HELTF -500，500＝{-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0.0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，0，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,+1, 0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,+1},

[0279] The 160 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0280] 160MHz:

[0281] HELTF -1012，1012 ={LTF 80MHz_lower_1x ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,LTF 80MHz_upper_1x}

[0282] LTF 80MHz_lower_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x}Should be used in the lower 80MHz band

[0283] LTF 80MHz_upper_1x ={LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}Should be used in the upper 80MHz band

[0284] LTF 80MHz_left_1x＝{-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0},

[0285] LTF 80MHz_right_1x＝{0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,+1},

[0286] In the case of 80+80MHz transmission using 1x HE-LTF, the lower 80MHz band should use HELTF- -500，500 -=LTF 80MHz_lower_1x 80MHz 1xHE-LTF sequence, the 80MHz band should use HELTF- -500，500 -=LTF 80MHz_upper_1x 80MHz1xHE-LTF sequence.

[0287] The 20 MHz band 2x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0288] HkDJ -122，122={-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+ 1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0, 0,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0 ,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1}

[0289] The 40 MHz band 2x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0290] HELTF -244，244＝{+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，0，0，0，0，0，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1},

[0291] The 80 MHz band 2x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0292] HELTF -500，500＝{+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，0，0，0，0，0，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0, +1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,1,0,+1,0,-1 ,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1 ,0,1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1},

[0293] The 160 MHz band 2x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0294] HELTF -1012，1012 ={LTF 80MHz_lower_2x ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,LTF 80MHz_upper_2x}

[0295] LTF 80MHz_lower_2x ={LTF 80MHz_part1_2x , LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_pan4_2x , LTF 80MHz_part5_2x} should be used in the lower 80MHz frequency sub-block

[0296] LTF 80MHz_upper_2x ={LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x} should be used in the upper 80MHz frequency sub-block

[0297] LTF 80MHz_part1_2x ={+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0}

[0298] LTF 80MHz_part2_2x={+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0}

[0299] LTF 80MHz_part3_2x ={+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,0,0,0,0,0,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1}

[0300] LTF 80MHz_part4_2x={0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1}

[0301] LTF 80MHz_part5_2x={0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1 ,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0 ,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+ 1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0}

[0302] In the case of 80+80MHz transmission using 2x HE-LTF, the lower 80MHz band should use HELTF- -500，500- =LTF 80MHz_lower_2x 80MHz 2xHE-LTF sequence, the 80MHz band should use HELTF- -500，500- =LTF 80MHz_upper_2x 80MHz 2xHE-LTF sequence.

[0303] The 20 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0304] HELTF -122，122={-1,-1,+ ... 1,-1,-1,-1,+1,-1,-1,+1,-1,-1,-1,-1,-1,+1,-1,-1,-1,-1,-1,+1,-1,-1,-1,-1,-1,+1,-1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,+1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,0, 0,0,-1,+1,-1,+1,-1,+1,+1,-1,+1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,-1,0+1,+1,-1,+1,+1,-1,-1,+1,-1,-1,-1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,-1,+1,-1,-1,-1,-1 +1,-1,+1,-1,+1,+1,+1,+1,+1,+1,-1,+1,+1,-1,+1,-1,-1,-1,-1,+1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,-1,+1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,+1,-1,+1,-1,+1,+1,-1,+1,-1,+1,+1}

[0305] The 40 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0306] HELTF -244，244＝{+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，+1，0，0，0，0，0，-1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，+1, -1, -1, +1, +1, +1, +1, +1, -1, +1, -1, -1, +1, +1, -1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, +1, -1, +1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, -1, +1, -1, -1, +1, -1, -1, -1, +1, -1, -1, +1, -1, -1, -1, +1, -1, -1, -1, +1, -1, -1, -1, +1, -1, -1, -1, +1, -1, -1, -1, , +1,-1,-1,+1,+1,-1,-1,-1,-1,-1,-1,+1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,-1,-1,+1,-1,+1,-1,-1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,-1,-1,+1,+1,-1,-1,+1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,-1,+1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,-1,+1,

[0307] The 80 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0308] HELTF -500，500＝{+1，+1，-1，+1，-1，+1，-1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，-1，-1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，-1，-1，-1，-1，-1，-1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，-1，+1，-1，-1，-1，-1，+1，+1，+1，-1，-1，+1，0，0，0，0，0，+1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，+1，+1，+1，+1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，+1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，+1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，+1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，+1}，

[0309] The 160 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0310] HELTF -1012，1012 ={LTF 80MHz_lower_4x ,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,LTF 80MHz_upper_4x}

[0311] LTF 80MHz_lower_4x ={LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x}Should be used in the lower 80MHz band

[0312] LTF 80MHz_upper_4x ={LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x}Should be used in the upper 80MHz band

[0313] LTF 80MHz_left_4x＝{+1，+1，-1，+1，-1，+1，-1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，-1，-1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+-1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，+1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，-1，-1，-1，-1，-1，-1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+-1，-1，+1，-1，+1，+01，-1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1,+1,-1,-1,+1,+1,+1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,+1,-1,+1,+1,-1,+1,-1,+1,-1,+1,+1,+1,-1,+1,+1,+1,-1,-1,+1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,-1,+1,-1,+1,+1,-1,-1,+1,-1,-1,-1,+1,+1,-1,+-1,+1,+1,+1,-1,-1,-1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1,+1,+1,-1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,+1,-1,-1,+1,+1,-1,+1,-1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,+1,+1,-1,+1,+1,-1,+1,-1,-1,-1,+1,-1,+1,-1,-1,-1,-1,+1,+1,+1,-1,-1,+1,0,0},

[0314] LTF 80MHz_right_4x＝{0，0，+1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，+1，+1，+1，+1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，+1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，+1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1, +1, -1, +1, +1, +1, +1, +1, +1, -1, -1, +1, +1, +1, +1, +1, -1, +1, +1, +1, -1, +1, -1, +1, -1, +1, -1, +1, -1, +1, -1, +1, -1, -1, +1, -1, +1, -1, -1, +1, -1, +1, -1, -1, +1, -1, +1, -1, -1, +1, -1, ,-1,+1,-1,-1,+1,+1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,-1,-1,+1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,-1,+1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1 ,-1,-1,-1,+1,-1,+1,+1,-1,+1,+1,-1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,+1,+1,+1,-1,-1,+1,+1,+1,-1,-1,+1,+1,+1,-1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+ 1,-1,-1,+1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,-1,-1,-1,-1,-1,-1,+1,+1,+1,-1,-1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,+1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1},

[0315] In the case of 80+80MHz transmission using 4x HE-LTF, the lower 80MHz band should use HELTF- -500，500- =LTF 80MHz_lower_4x 80MHz 4xHE-LTF sequence, the 80MHz band should use HELTF- -500，500- =LTF 80MHz_upper_4x 80MHz 4xHE-LTF sequence.

[0316] Figure 20 is a diagram illustrating an embodiment of an 80 MHz OFDMA tone plan.

[0317] refer to Figure 20 , an 80MHz OFDMA tone plan can be configured by copying a 40MHz OFDMA tone plan and shifting it by + / - 20MHz each. For example, 160MHz, 240MHz, and 320MHz tone plans can be configured by copying an 80MHz tone plan.

[0318] The 80MHz OFDMA tone plan can be configured as follows:

[0319] {-256+[-244:-3 3:244], 256+[-244:-3 3:244]}=[-500:-259,-253:-12,12:253,259:500]

[0320] Compared to 11ax, the new tone plan essentially shifts the "-253:-12" and "12:253" portions, as well as the small RUs. The 484RU can be similarly modified to have five null tones in the middle. 80MHz OFDMA is configured by replicating 40MHz, and the 484-tone RUs in Table 8 are shifted left and right by 256 tones, respectively.

[0321] [Table 8]

[0322]

[0323] When designing a tone plan based on the proposed new tone plan, the location of the pilot subcarriers may differ. For example, in the case of an 80 MHz configuration, four 242 tones may be included, with the second and third 242 tones shifted by 5 tones toward the DC tone. If the pilot subcarriers were also shifted by 5 tones like this, they could be located in odd-numbered tones, which could cause problems. Therefore, the present disclosure proposes a method for changing the location of the pilots.

[0324] First, the existing tone plan for 80 MHz is shown in Table 9.

[0325] [Table 9]

[0326]

[0327] An example of a new tone plan in 80 MHz is shown in Table 10.

[0328] [Table 10]

[0329]

[0330]

[0331] According to the new tone plan, the position of the pilot subcarrier should be changed, but if the existing method is maintained, it will be mapped to odd tones. In this case, when STF / LTF is mapped only to even tones, if the pilot is mapped to odd tones, it may cause problems.

[0332] [Table 11]

[0333]

[0334] Here, the pilot tones for the 14th and 23rd 26-tone RUs can use {-140, -126} and {126, 140} instead of {-138, -124} and {124, 138}. This is to align the pilot tones with the 6th to 7th tones or the 20th to 21st tones among the 1st to 26th tones within the 26-tone RU.

[0335] In addition, in the case of the new tone plan, since no change is made for 996RU, the position of the existing pilot can be maintained as it is when 996RU or RUs that are multiples of 996RU are used.

[0336] If the above-mentioned pilot tone is referred to as [80_Pilot_idx], in case of 160 / 240 / 320 MHz, the pilot tone can be expressed as follows.

[0337] For 160MHz: [80_Pilot_idx]-512, [80_Pilot_idx]+512

[0338] For 240MHz: [80_Pilot_idx]-1024, [80_Pilot_idx], [80_Pilot_idx]+1024

[0339] For 320MHz: [80_Pilot_idx]-1536, [80_Pilot_idx]-512, [80_Pilot_idx]+512, [80_Pilot_idx]+1536

[0340] The new aggregate RU (hereinafter referred to as MRU) adapted in 11be or the MRU that may be added is as follows.

[0341] For 80MHz: 26+52MRU, 26+106MRU, 484+242MRU

[0342] For 160MHz: 26+52MRU, 26+106MRU, 484+996MRU, 242+484+996MRU

[0343] For 240MHz: 26+52MRU, 26+106MRU, 2*996MRU, 2*996+484MRU, 996+484MRU

[0344] For 320MHz: 26+52MRU, 26+106MRU, 3*996MRU, 3*996+484MRU, 484+996MRU

[0345] For these MRUs, the pilot tones for the new tone plan can be defined in the following two ways.

[0346] Method 1: In the case of an "X+Y" MRU, pilot tones for each of the X RU and Y RU are used. For example, in the case of a 26+52-tone MRU, the pilot index for the 26-tone RU and the pilot index for the 52-tone RU defined in the above table can be applied separately. In the case of a 242+484+996 MRU, pilot indices for the 242-tone RU, 484-tone RU, and 996-tone RU can be used separately. Even when multiple 996 RUs are included, pilot indices for each 996-tone RU can be used.

[0347] Method 2: In the case of an "X+Y" MRU, the pilot tones of the smallest RU among the RUs greater than the "X+Y" value can be used. That is, in the case of a 26+52 MRU, the pilot index for the 106-tone RU is used, and the pilot index belonging to the 26-tone not included in the 106-tone RU is excluded. In the case of a 26+106 MRU, the pilot index of the 242-tone RU is used, and the pilot index belonging to the tone index not included in the 242-tone RU is excluded. In the case of a 484+242 MRU, the pilot index of the 996-tone RU is used, but the pilot index belonging to the tone index not included in the 996-tone RU is excluded. However, if it is larger than a 996-tone RU, the pilot index belonging to each 996-tone RU can be used. For example, in the case of 3*996+484 MRU, in the case of 320 MHz, pilot indexes belonging to 320 MHz are used, and pilot indexes not included in the corresponding 996-tone RU are not used.

[0348] Figure 21 is a diagram illustrating an embodiment of a tone plan.

[0349] refer to Figure 21 , with respect to the definition of 26+52 MRUs for 80 MHz (shaded area), the pilot tones for methods 1 and 2 are illustrated in Table 12.

[0350] [Table 12]

[0351]

[0352] If an example pilot tone is referred to as [80_Pilot_idx], in the case of 160 / 240 / 320 MHz, the pilot tone can be expressed as follows.

[0353] For 160MHz: [80_Pilot_idx]-512, [80_Pilot_idx]+512

[0354] For 240MHz: [80_Pilot_idx]-1024, [80_Pilot_idx], [80_Pilot_idx]+1024

[0355] For 320MHz: [80_Pilot_idx]-1536, [80_Pilot_idx]-512, [80_Pilot_idx]+512, [80_Pilot_idx]+1536

[0356] An example of a new tone plan for 80 MHz is shown in Table 13.

[0357] [Table 13]

[0358]

[0359] According to the new tone plan, the position of the pilot subcarrier should be changed, but if the existing method is maintained, it will be mapped to the odd tone. In this case, when STF / LTF is only mapped to the even tone, if the pilot is mapped to the odd tone, it may cause problems.

[0360] [Table 14]

[0361]

[0362] If the above-mentioned pilot tone is referred to as [80_Pilot_idx], in case of 160 / 240 / 320 MHz, the pilot tone can be expressed as follows.

[0363] For 160MHz: [80_Pilot_idx]-512, [80_Pilot_idx]+512

[0364] For 240MHz: [80_Pilot_idx]-768, [80_Pilot_idx], [80_Pilot_idx]+768

[0365] For 320MHz: [80_Pilot_idx]-1024, [80_Pilot_idx]-512, [80_Pilot_idx]+512, [80_Pilot_idx]+1024

[0366] Alternatively, for example, if the above-mentioned pilot tone is referred to as [80_Pilot_idx], in case of 160 / 240 / 320 MHz, the pilot tone may be expressed as follows.

[0367] For 160MHz: [80_Pilot_idx]-512, [80_Pilot_idx]+512

[0368] For 240MHz: [80_Pilot_idx]-768, [80_Pilot_idx], [80_Pilot_idx]+768

[0369] For 320MHz: [80_Pilot_idx]-1024, [80_Pilot_idx]-512, [80_Pilot_idx]+512, [80_Pilot_idx]+1024

[0370] Table 15 shows an embodiment of the positions of pilot subcarriers.

[0371] [Table 15]

[0372]

[0373] If the above-mentioned pilot tone is referred to as [80_Pilot_idx], in case of 160 / 240 / 320 MHz, the pilot tone can be expressed as follows.

[0374] For 160MHz: [80_Pilot_idx]-512, [80_Pilot_idx]+512

[0375] For 240MHz: [80_Pilot_idx]-768, [80_Pilot_idx], [80_Pilot_idx]+768

[0376] For 320MHz: [80_Pilot_idx]-1024, [80_Pilot_idx]-512, [80_Pilot_idx]+512, [80_Pilot_idx]+1024

[0377] Figure 22 is a diagram illustrating an embodiment of a method of operating a transmitting STA.

[0378] refer to Figure 22The transmitting STA can generate the PPDU (S2210). For example, the transmitting STA can generate a first PPDU. For example, the first PPDU can include a first data field transmitted over a 996-tone resource unit (RU). The first data field can include first pilot subcarriers for the 996-tone RU. The indices of the first pilot subcarriers can be {-468, -400, -334, -266, -220, -152, -86, -18, 18, 86, 152, 220, 266, 334, 400, 468}.

[0379] The transmitting STA can transmit the PPDU (S2220). For example, the transmitting STA can transmit the first PPDU over an 80 MHz band.

[0380] For example, the transmitting STA can generate a second PPDU and transmit the second PPDU over the 80 MHz band. The second PPDU can include a second data field transmitted over a 26-tone RU. The second data field can include second pilot subcarriers for the 26-tone RU. The indices of the second pilot subcarriers can be {-494, -480}, {-468, -454}, {-440, -426}, {-414, -400}, {-386, -372}, {-360, -346}, {-334, -320}, {-306, -292}, {-280, -266}, {-246, -232}, {-220, -206}, {-192, -178}, {-166, -152}, {-140, -126}, {-112, -98}, {-86, -72}, {-58, -44}, {-32, -18}, {18, 32}, {44, 58}, {72, 86}, {98, 112}, {126, 140}, {152, 166}, {178, 192}, {206, 220}, {232, 246}, {266, 280}, {292, 306}, {320, 334}, {346, 360}, {372, 386}, {400, 414}, {426, 440}, {454, 468}, or {480, 494}.

[0381] For example, the transmitting STA may generate a third PPDU and transmit the third PPDU over the 80 MHz frequency band. The third PPDU may include a third data field transmitted over a 52-tone RU. The third data field may include a third pilot subcarrier for the 52-tone RU. The indexes of the third pilot subcarriers may be {-494, -480, -468, -454}, {-440, -426, -414, -400}, {-360, -346, -334, -320}, {-306, -292, -280, -266}, {-246, -232, -220, -206}, {-192, -178, -166, -152}, {-112, -98, -86, -72}, {-58,-44,-32,-18}, {18,32,44,58}, {72,86,98,112}, {152,166,178,192}, {206,220,232,246}, {266,280,292,306}, {320,334,346,360}, {400,414,426,440}, or {454,468,480,494}.

[0382] For example, the transmitting STA may generate a fourth PPDU and send it over the 80 MHz frequency band. The fourth PPDU may include a fourth data field sent over a 106-tone RU. The fourth data field may include a fourth pilot subcarrier for the 106-tone RU. The fourth pilot subcarrier may have an index of {-494, -468, -426, -400}, {-360, -334, -292, -266}, {-246, -220, -178, -152}, {-112, -86, -44, -18}, {18, 44, 86, 112}, {152, 178, 220, 246}, {266, 292, 334, 360}, or {400, 426, 468, 494}.

[0383] For example, the transmitting STA may generate a fifth PPDU and send it over the 80 MHz frequency band. The fifth PPDU may include a fifth data field sent over a 242-tone RU. The fifth data field may include a fifth pilot subcarrier for the 242-tone RU. The indexes of the fifth pilot subcarriers may be {-494, -468, -426, -400, -360, -334, -292, -266}, {-246, -220, -178, -152, -112, -86, -44, -18}, {18, 44, 86, 112, 152, 178, 220, 246}, or {266, 292, 334, 360, 400, 426, 468, 494}.

[0384] For example, the transmitting STA may generate a sixth PPDU and send it via the 80 MHz frequency band. The sixth PPDU may include a sixth data field sent via a 484-tone RU. The sixth data field may include a sixth pilot subcarrier for the 484-tone RU. The index of the sixth pilot subcarrier may be {-494, -468, -426, -400, -360, -334, -292, -266, -246, -220, -178, -152, -112, -86, -44, -18} or {18, 44, 86, 112, 152, 178, 220, 246, 266, 292, 334, 360, 400, 426, 468, 494}.

[0385] Figure 23 is a diagram illustrating an embodiment of a method of operating a receiving STA.

[0386] refer to Figure 23 , a receiving STA may receive a PPDU (S2310). For example, the receiving STA may receive a first PPDU via an 80 MHz frequency band. For example, the first PPDU may include a first data field transmitted via a 996-tone resource unit (RU). The first data field may include a first pilot subcarrier for the 996-tone RU. The index of the first pilot subcarrier may be {-468, -400, -334, -266, -220, -152, -86, -18, 18, 86, 152, 220, 266, 334, 400, 468}.

[0387] The transmitting STA may decode the PPDU (S2320).For example, the receiving STA may decode the first PPDU.

[0388] For example, the transmitting STA may receive the second PPDU through the 80 MHz frequency band and decode the second PPDU. The second PPDU may include a second data field transmitted through the 26-tone RU. The second data field may include a second pilot subcarrier for the 26-tone RU. The indexes of the second pilot subcarriers may be {-494, -480}, {-468, -454}, {-440, -426}, {-414, -400}, {-386, -372}, {-360, -346}, {-334, -320}, {-306, -292}, {-280, -266}, {-246, -232}, {-220, -206}, {-192, -178}, {-166, -152}, {-140, -126}, {-112, -98}, {-86, {-72}, {-58,-44}, {-32,-18}, {18,32}, {44,58}, {72,86}, {98,112}, {126,140}, {152,166}, {178,192}, {206,220}, {232,246}, {266,280}, {292,306}, {320,334}, {346,360}, {372,386}, {400,414}, {426,440}, {454,468}, or {480,494}.

[0389] For example, the transmitting STA may receive the third PPDU through the 80 MHz frequency band and decode the third PPDU. The third PPDU may include a third data field transmitted through the 52-tone RU. The third data field may include a third pilot subcarrier for the 52-tone RU. The indexes of the third pilot subcarrier may be {-494, -480, -468, -454}, {-440, -426, -414, -400}, {-360, -346, -334, -320}, {-306, -292, -280, -266}, {-246, -232, -220, -206}, {-192, -178, -166, -152}, {-112, -98, -86, -72}, {-58,-44,-32,-18}, {18,32,44,58}, {72,86,98,112}, {152,166,178,192}, {206,220,232,246}, {266,280,292,306}, {320,334,346,360}, {400,414,426,440}, or {454,468,480,494}.

[0390] For example, a transmitting STA may receive and decode a fourth PPDU via an 80 MHz frequency band. The fourth PPDU may include a fourth data field transmitted via a 106-tone RU. The fourth data field may include a fourth pilot subcarrier for the 106-tone RU. The fourth pilot subcarrier may have an index of {-494, -468, -426, -400}, {-360, -334, -292, -266}, {-246, -220, -178, -152}, {-112, -86, -44, -18}, {18, 44, 86, 112}, {152, 178, 220, 246}, {266, 292, 334, 360}, or {400, 426, 468, 494}.

[0391] For example, the transmitting STA may receive and decode the fifth PPDU via the 80 MHz frequency band. The fifth PPDU may include a fifth data field transmitted via a 242-tone RU. The fifth data field may include a fifth pilot subcarrier for the 242-tone RU. The indexes of the fifth pilot subcarrier may be {-494, -468, -426, -400, -360, -334, -292, -266}, {-246, -220, -178, -152, -112, -86, -44, -18}, {18, 44, 86, 112, 152, 178, 220, 246}, or {266, 292, 334, 360, 400, 426, 468, 494}.

[0392] For example, a transmitting STA may receive and decode a sixth PPDU via an 80 MHz frequency band. The sixth PPDU may include a sixth data field transmitted via a 484-tone RU. The sixth data field may include a sixth pilot subcarrier for the 484-tone RU. The index of the sixth pilot subcarrier may be {-494, -468, -426, -400, -360, -334, -292, -266, -246, -220, -178, -152, -112, -86, -44, -18} or {18, 44, 86, 112, 152, 178, 220, 246, 266, 292, 334, 360, 400, 426, 468, 494}.

[0393] exist Figure 22 and Figure 23 Some of the detailed steps shown in the examples may not be necessary steps and may be omitted. Figure 22 and Figure 23 In addition to the steps shown in , other steps can be added, and the order of the steps can be changed. Some of the above steps may have their own independent technical significance.

[0394] The technical features of the present specification can be applied to various devices and methods. Figure 1 and / or Figure 19 For example, the technical features of the above-mentioned specification can only be applied to Figure 1 and / or part of 19. For example, the above technical features of this specification are based on Figure 1 The processing chips 114 and 124 are implemented, or based on Figure 1 The processors 111 and 121 and the memories 112 and 122 in the embodiment of the present invention can be implemented, or based on Figure 19 The processor 610 and the memory 620 of the present specification are implemented. For example, the apparatus of the present specification may include a memory; and a processor operatively coupled to the memory, wherein the process is adapted to: generate a first physical protocol data unit (PPDU); and transmit the first PPDU via an 80 MHz frequency band, wherein the first PPDU includes a first data field transmitted via a 996-tone resource unit (RU), wherein the first data field includes a first pilot subcarrier for the 996-tone RU, and the index of the first pilot subcarrier is as follows:

[0395] {-468,-400,-334,-266,-220,-152,-86,-18,18,86,152,220,266,334,400,468}

[0396] The technical features of this specification can be implemented based on a computer-readable medium (CRM). For example, the CRM proposed in this specification can be at least one computer-readable medium (CRM) that stores instructions that are executed by at least one processor of a transmitting station (STA) in a wireless local area network (WLAN) system to perform operations including: generating a first physical protocol data unit (PPDU); and transmitting the first PPDU via an 80 MHz frequency band, wherein the first PPDU includes a first data field transmitted via a 996-tone resource unit (RU), wherein the first data field includes a first pilot subcarrier for the 996-tone RU, and the first pilot subcarrier is indexed as follows: {-468, -400, -334, -266, -220, -152, -86, -18, 18, 86, 152, 220, 266, 334, 400, 468}.

[0397] The instructions stored in the CRM of this specification can be executed by at least one processor. The at least one processor associated with the CRM of this specification can be Figure 1 processor (111, 121) or processing chip (114, 124), or Figure 19Meanwhile, the CRM of this specification may be Figure 1 Memory (112, 122), or Figure 19 memory (620), or a separate external memory / storage medium / disk, etc.

[0398] The above technical features of this specification are applicable to various applications or business models. For example, the above technical features can be applied to wireless communications of devices that support artificial intelligence (AI).

[0399] Artificial intelligence refers to the field of study concerning artificial intelligence or methods for creating it, while machine learning refers to the field of study concerning methods for defining and solving various problems within the field of artificial intelligence. Machine learning is also defined as algorithms that improve operational performance through consistent operational experience.

[0400] An artificial neural network (ANN) is a model used in machine learning and can refer to an overall problem-solving model that includes artificial neurons (nodes) that form a network by combining synapses. An artificial neural network can be defined by the connection pattern between neurons in different layers, the learning process that updates the model parameters, and the activation function that generates the output value.

[0401] An artificial neural network may include an input layer, an output layer, and optionally one or more hidden layers. Each layer includes one or more neurons, and the artificial neural network may include synapses connecting the neurons. In an artificial neural network, each neuron may output a function value of an activation function of an input signal, a weight, and a bias input through the synapse.

[0402] Model parameters are those determined by learning and include the weights of synaptic connections and the biases of neurons. Hyperparameters are those set in a machine learning algorithm before learning and include the learning rate, number of iterations, mini-batch size, and initialization function.

[0403] Learning an artificial neural network can be aimed at determining model parameters for minimizing a loss function. The loss function can be used as an index for determining the optimized model parameters during the learning of the artificial neural network.

[0404] Machine learning can be categorized into supervised learning, unsupervised learning, and reinforcement learning.

[0405] Supervised learning refers to a method for training an artificial neural network when labels are given for training data, where the labels may indicate the correct answer (or result value) that the artificial neural network needs to infer when the training data is input into the artificial neural network. Unsupervised learning may refer to a method for training an artificial neural network when no labels are given for training data. Reinforcement learning may refer to a training method for an agent defined in a training environment to select an action or sequence of actions to maximize the cumulative reward in each state.

[0406] Machine learning implemented using a deep neural network (DNN) including multiple hidden layers in an artificial neural network is called deep learning, and deep learning is a part of machine learning. Hereinafter, machine learning is explained as including deep learning.

[0407] The above technical features can be applied to wireless communication of robots.

[0408] A robot can refer to a machine that automatically processes or operates a given task with its own capabilities. Specifically, a robot that has the function of recognizing the environment and autonomously making judgments to perform operations can be called an intelligent robot.

[0409] Robots can be classified into industrial, medical, household, military, etc. according to their use or field. Robots can include actuators or drives, which include motors to perform various physical operations (for example, moving robot joints). In addition, mobile robots can include wheels, brakes, propellers, etc. in the drive to travel on the ground or fly in the air.

[0410] The above technical features can be applied to devices that support extended reality.

[0411] Extended reality collectively refers to virtual reality (VR), augmented reality (AR), and mixed reality (MR). VR technology is a computer graphics technology that presents real-world objects and backgrounds solely within CG images. AR technology is a computer graphics technology that presents virtual CG images over images of real objects. MR technology is a computer graphics technology that presents virtual objects that are mixed and combined with the real world.

[0412] MR technology is similar to AR technology in that real objects and virtual objects are displayed together. However, in AR technology, virtual objects are used as a supplement to real objects, while in MR technology, virtual objects and real objects are used as equals.

[0413] XR technology can be applied to head-mounted displays (HMDs), head-up displays (HUDs), mobile phones, tablet PCs, laptop computers, desktop computers, TVs, digital signage, etc. Devices to which XR technology is applied may be referred to as XR devices.

[0414] The claims recited in this specification may be combined in various ways. For example, the technical features of the method claims in this specification may be combined to implement a device, and the technical features of the device claims in this specification may be combined to implement a method. Furthermore, the technical features of the method claims and the technical features of the device claims in this specification may be combined to implement a device, and the technical features of the method claims and the technical features of the device claims in this specification may be combined to implement a method.

Claims

1. A method performed by a sending station (STA) in a wireless local area network (WLAN) system, the method comprising: Generate a first physical protocol data unit PPDU; as well as Sending the first PPDU via 80 MHz frequency band, The first PPDU includes a first data field transmitted via four 242-tone resource units RU, Wherein, the 242-tone RU is located in the index ranges of {-500:-259}, {-253:-12}, {12:253}, and {259:500}, wherein the first data field includes first pilot subcarriers for the 242-tone RU, and the indexes of the first pilot subcarriers are as follows: {-494, -468, -426, -400, -360, -334, -292, -266}, {-246, -220, -178, -152, -112, -86, -44, -18}, {18, 44, 86, 112, 152, 178, 220, 246} and {266, 292, 334, 360, 400, 426, 468, 494}.

2. The method according to claim 1, further comprising: generating a second PPDU; as well as Sending the second PPDU via 80 MHz frequency band, wherein the second PPDU includes a second data field transmitted via a 26-tone RU; wherein the second data field includes second pilot subcarriers for the 26-tone RU, and the indexes of the second pilot subcarriers are as follows: {-494, -480}, {-468, -454}, {-440, -426}, {-414, -400}, {-386, -372}, {-360, -346}, {-334, -320}, {-306, -292}, {-280, -266}, {-246, -232}, {-220, -206}, {-192, -178}, {-166, -152}, {-140, -126}}, {-112,-98}, {-86,-72}, {-58,-44}, {-32,-18}, {18,32}, {44,58}, {72,86}, {98,112}, {126,140}, {152,166}, {178,192}, {206,220}, {232,246}, {266,280}, {292,306}, {320,334}, {346,360}, {372,386}, {400,414}, {426,440}, {454,468}, or {480,494}.

3. The method according to claim 1, further comprising: Generate a third PPDU; as well as Sending the third PPDU via the 80 MHz frequency band, wherein the third PPDU includes a third data field sent via a 52-tone RU; The third data field includes third pilot subcarriers for the 52-tone RU, and the indexes of the third pilot subcarriers are as follows: {-494, -480, -468, -454}, {-440, -426, -414, -400}, {-360, -346, -334, -320}, {-306, -292, -280, -266}, {-246, -232, -220, -206}, {-192, -178, -166, -1 , {52}, {-112,-98,-86,-72}, {-58,-44,-32,-18}, {18,32,44,58}, {72,86,98,112}, {152,166,178,192}, {206,220,232,246}, {266,280,292,306}, {320,334,346,360}, {400,414,426,440}, or {454,468,480,494}.

4. The method according to claim 1, further comprising: Generate a fourth PPDU; as well as Sending the fourth PPDU via the 80 MHz frequency band, wherein the fourth PPDU includes a fourth data field sent via a 106-tone RU; The fourth data field includes fourth pilot subcarriers for the 106-tone RU, and the indexes of the fourth pilot subcarriers are as follows: {-494, -468, -426, -400}, {-360, -334, -292, -266}, {-246, -220, -178, -152}, {-112, -86, -44, -18}, {18, 44, 86, 112}, {152, 178, 220, 246}, {266, 292, 334, 360}, or {400, 426, 468, 494}.

5. The method according to claim 1, further comprising: Generate a fifth PPDU; as well as Sending the fifth PPDU via the 80 MHz frequency band, wherein the fifth PPDU includes a fifth data field sent via a 484-tone RU; wherein the fifth data field includes a fifth pilot subcarrier for the 484-tone RU, and the indexes of the fifth pilot subcarriers are as follows: {-494, -468, -426, -400, -360, -334, -292, -266, -246, -220, -178, -152, -112, -86, -44, -18} or {18, 44, 86, 112, 152, 178, 220, 246, 266, 292, 334, 360, 400, 426, 468, 494}.

6. A sending station (STA) in a wireless local area network (WLAN) system, the sending STA comprising: a transceiver that transmits and / or receives wireless signals; as well as a processor coupled to the transceiver, The processor is suitable for: generating a first physical protocol data unit (PPDU); and Sending the first PPDU via 80 MHz frequency band, The first PPDU includes a first data field transmitted via four 242-tone resource units RU, Wherein, the 242-tone RU is located in the index ranges of {-500:-259}, {-253:-12}, {12:253}, and {259:500}, wherein the first data field includes first pilot subcarriers for the 242-tone RU, and the indexes of the first pilot subcarriers are as follows: {-494, -468, -426, -400, -360, -334, -292, -266}, {-246, -220, -178, -152, -112, -86, -44, -18}, {18, 44, 86, 112, 152, 178, 220, 246} and {266, 292, 334, 360, 400, 426, 468, 494}.

7. The transmitting STA according to claim 6, wherein: The processor is further adapted to perform the steps of the method according to any one of claims 2 to 5.

8. A method performed by a receiving station (STA) in a wireless local area network (WLAN) system, the method comprising: Receive a physical protocol data unit (PPDU) from a transmitting STA via the 80 MHz frequency band; as well as Decoding the PPDU, The PPDU includes a data field sent via four 242-tone resource units RU. Wherein, the 242-tone RU is located in the index ranges of {-500:-259}, {-253:-12}, {12:253}, and {259:500}, The data field includes pilot subcarriers for the 242-tone RU, and the pilot subcarriers are indexed as follows: {-494, -468, -426, -400, -360, -334, -292, -266}, {-246, -220, -178, -152, -112, -86, -44, -18}, {18, 44, 86, 112, 152, 178, 220, 246}, and {266, 292, 334, 360, 400, 426, 468, 494}.

9. The method according to claim 8, wherein The receiving STA is adapted to perform the steps of the method according to any one of claims 2 to 5.

10. A receiving station (STA) in a wireless local area network (WLAN) system, the receiving STA comprising: a transceiver that transmits and / or receives wireless signals; and a processor coupled to the transceiver, The processor is suitable for: receiving a physical protocol data unit (PPDU) from a transmitting STA via an 80 MHz frequency band; and Decoding the PPDU, The PPDU includes a data field sent via four 242-tone resource units RU. Wherein, the 242-tone RU is located in the index ranges of {-500:-259}, {-253:-12}, {12:253}, and {259:500}, The data field includes pilot subcarriers for the 242-tone RU, and the pilot subcarriers are indexed as follows: {-494, -468, -426, -400, -360, -334, -292, -266}, {-246, -220, -178, -152, -112, -86, -44, -18}, {18, 44, 86, 112, 152, 178, 220, 246}, and {266, 292, 334, 360, 400, 426, 468, 494}.

11. The receiving STA according to claim 10, wherein: The processor is further adapted to perform the steps of the method according to any one of claims 2 to 5.

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