Method for transmitting and receiving physical protocol data unit and station therefor

Abstract

The invention relates to a method for transmitting and receiving a physical protocol data unit and a station therefor. In a wireless local area network (WLAN) system, an LTF sequence may be defined for 320 MHz or 160 + 160 MHz band transmission.

Description

[0001] This application is a divisional application of the original invention patent application with application number 202180033720.6 (international application number: PCT / KR2021 / 000724, application date: January 19, 2021, invention name: 1X LTF sequence for 320MHZ). Technical Field

[0002] The present specification relates to a long training field (LTF) sequence used in a 320 MHz frequency band in a wireless local area network (WLAN) system. Background Art

[0003] 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) technologies.

[0004] 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 sequence, hybrid automatic repeat request (HARQ) scheme, etc. The EHT standard may be referred to as the IEEE 802.11be standard. Summary of the invention

[0005] Technical Solution

[0006] In a wireless local area network (WLAN) system according to various embodiments, a transmitting station (STA) may generate a physical protocol data unit (PPDU). The transmitting STA may send the PPDU to the receiving STA via a 320 MHz band or a 160+160 MHz band. The PPDU may include a long training field (LTF) signal, and the LTF signal may be generated based on an LTF sequence.

[0007] Beneficial Effects

[0008] According to the example of this specification, a 1x Extremely High Throughput (EHT)-LTF supporting a 320MHz band can be defined. In addition, since the sequence of the example of this specification has the lowest peak-to-average power ratio (PAPR) among the methods of reusing existing sequences, there may be excellent advantages in terms of both economy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An example of a transmitting device and / or a receiving device of this specification is shown.

[0010] Figure 2 is a conceptual view showing the structure of a wireless local area network (WLAN).

[0011] Figure 3 Shows the general link establishment process.

[0012] Figure 4 An example of PPDU used in the IEEE standard is shown.

[0013] Figure 5 The layout of resource units (RUs) used in a frequency band of 20 MHz is shown.

[0014] Figure 6 The layout of RUs used in a frequency band of 40 MHz is shown.

[0015] Figure 7 The layout of RUs used in the 80 MHz frequency band is shown.

[0016] Figure 8 The structure of the HE-SIG-B field is shown.

[0017] Fig. 9 An example is shown in which multiple user STAs are assigned to the same RU through the MU-MIMO scheme.

[0018] Fig.10 The operation based on UL-MU is shown.

[0019] Fig.11 An example of a trigger frame is shown.

[0020] Fig.12 An example of a common information field of a trigger frame is shown.

[0021] Fig.13 An example of subfields included in the per-user information field is shown.

[0022] Fig.14 Describe the technical features of the UORA scheme.

[0023] Fig.15 An example of channels used / supported / defined in the 2.4 GHz band is shown.

[0024] Fig.16 Shows an example of channels used / supported / defined in the 5 GHz band.

[0025] Fig.17 Shows examples of channels used / supported / defined in the 6 GHz band.

[0026] Fig.18 An example of PPDU used in this specification is shown.

[0027] Fig.19 An example of a modified transmission device and / or reception device of the present specification is shown.

[0028] Fig. 20 The cumulative distribution function (CDF) of the data peak-to-average power ratio (PAPR) is shown.

[0029] Figure 21 to Figure 23 is a graph showing the PAPR in various indicated RUs of 1 / 2 / 4x LTF sequences.

[0030] Fig.24 An embodiment of a transmitting STA operation method is shown.

[0031] Fig.25 An embodiment of a receiving STA operation method is shown. DETAILED DESCRIPTION

[0032] 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".

[0033] A slash ( / ) or a comma used in this specification 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".

[0034] In the present specification, "at least one of A and B" may mean "only A", "only B", or "both A and B". In addition, in the present 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".

[0035] In addition, in the present 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".

[0036] In addition, the brackets used in this specification may mean "for example". Specifically, when indicated as "control information (EHT-signal)", it may mean that "EHT-signal" is proposed as an example of "control information". In other words, the "control information" of 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 (ie, EHT signal)", it may also mean that "EHT signal" is proposed as an example of "control information".

[0037] Technical features described separately in one drawing of the present specification may be implemented separately or simultaneously.

[0038] 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 IEEE802.11ax 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.

[0039] Hereinafter, in order to describe the technical features of the present specification, technical features applicable to the present specification will be described.

[0040] Figure 1 An example of a transmitting device and / or a receiving device of this specification is shown.

[0041] 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 of this specification may also be referred to as various terms such as mobile terminals, wireless devices, wireless transmit / receive units (WTRUs), user equipment (UEs), mobile stations (MSs), mobile subscriber units, or simply as users. The STAs 110 and 120 of this specification may also be referred to as various terms such as networks, base stations, node Bs, access points (APs), repeaters, routers, repeaters, etc. The STAs 110 and 120 of this specification may also be referred to as various names such as receiving devices, transmitting devices, receiving STAs, transmitting STAs, receiving devices, transmitting devices, etc.

[0042] For example, the STAs 110 and 120 may function as an AP or a non-AP. That is, the STAs 110 and 120 of the present specification may function as an AP and / or a non-AP.

[0043] In addition to the IEEE 802.11 standard, the STAs 110 and 120 of the present specification may support various communication standards together. For example, communication standards based on 3GPP standards (e.g., LTE, LTE-A, 5G NR standards), etc. may be supported. In addition, the STAs of the present specification may be implemented as various devices such as mobile phones, vehicles, personal computers, etc. In addition, the STAs of the present specification may support communication for various communication services such as voice calls, video calls, data communications, and self-driving (autonomous driving).

[0044] 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.

[0045] The following will refer to Figure 1 STAs 110 and 120 are described in sub-figure (a) of FIG.

[0046] The first STA 110 may include a processor 111, a memory 112, and a transceiver 113. The processing, memory, and transceiver shown may be separately implemented as separate chips, or at least two blocks / functions may be implemented by a single chip.

[0047] The transceiver 113 of the first STA performs a signal transmission / reception operation. Specifically, it can transmit / receive IEEE802.11 packets (e.g., IEEE 802.11a / b / g / n / ac / ax / be, etc.).

[0048] For example, the first STA 110 may perform operations expected by the AP. For example, the processor 111 of the AP may receive a signal through the transceiver 113, process a received (RX) signal, generate a transmitted (TX) signal, and provide control for signal transmission. The memory 112 of the AP may store a signal (e.g., an RX signal) received through the transceiver 113, and may store a signal (e.g., a TX signal) to be transmitted through the transceiver.

[0049] For example, the second STA 120 can perform operations expected by the non-AP STA. For example, the transceiver 123 of the non-AP performs signal transmission / reception operations. Specifically, IEEE 802.11 packets (e.g., IEEE 802.11a / b / g / n / ac / ax / be packets, etc.) can be transmitted / received.

[0050] 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.

[0051] For example, the operation of a device indicated as an AP in the specification described below 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 the relevant signal may be transmitted or received by 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 TX / RX signal of the AP 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 the relevant signal may be transmitted or received by 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 TX / RX signal of the AP may be stored in the memory 122 of the second STA 120.

[0052] For example, in the specification described below, the operation of the 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 the relevant signal 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 the relevant signal 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.

[0053] In the specification described below, 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, a device indicated as (but not specifically numbered) a (transmitting / receiving) STA, a first STA, a second STA, STA1, STA2, an AP, a first AP, a second AP, AP1, AP2, a (transmitting / receiving) terminal, a (transmitting / receiving) device, a (transmitting / receiving) apparatus, a network, etc. may refer to Figure 1 For example, in the following example, the operation of various STAs sending / receiving signals (eg, PPDU) may be performed in Figure 1 In addition, in the following examples, various STAs generate TX / RX signals or perform data processing and calculations in advance for TX / RX signals. Figure 1 111 and 121 of the processors. For example, examples of operations for generating TX / RX signals or performing data processing and calculation in advance may include: 1) operations for determining / obtaining / configuring / calculating / decoding / encoding bit information of subfields (SIG, STF, LTF, data) included in the PPDU; 2) operations for determining / configuring / obtaining time resources or frequency resources (e.g., subcarrier resources) for subfields (SIG, STF, LTF, data) included in the PPDU; 3) operations for determining / configuring / obtaining specific sequences (e.g., pilot sequences, STF / LTF sequences, additional sequences applied to SIG) for 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, etc. 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 the memories 112 and 122.

[0054] 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 the present specification.

[0055] For example, Figure 1 The transceivers 113 and 123 shown in the sub-diagram (b) of FIG. Figure 1 The same functions as the aforementioned transceiver shown in sub-figure (a) of FIG. Figure 1The 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 processors 111 and 121 and memories 112 and 122 have the same functions as those shown in sub-figure (a) above.

[0056] 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, repeater, receiving unit, sending unit, receiving STA, sending STA, receiving device, sending device, receiving apparatus and / or sending apparatus described below may mean Figure 1 STA110 and 120 shown in sub-figure (a) / (b) of Figure 1 The processing chips 114 and 124 shown in the sub-figure (b) of FIG. That is, the technical features of this specification can be Figure 1 110 and 120 shown in the sub-figures (a) / (b) of FIG. 110 and 120, or may be performed only in Figure 1 The processing chips 114 and 124 shown in the sub-figure (b) of 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 The technical features of the control signals generated in the processors 111 and 121 illustrated in the sub-figures (a) / (b) of FIG. Alternatively, the technical features of the sending STA sending the control signal can be understood as Figure 1 The technical features of the processing chips 114 and 124 shown in the sub-figure (b) of FIG. 10 are for generating control signals to be transmitted to the transceivers 113 and 123 .

[0057] For example, the technical feature of receiving the control signal by the receiving STA can be understood as Figure 1 The technical feature of the transceivers 113 and 123 receiving the control signal shown in the sub-figure (a) of FIG. 1 can be understood as the technical feature of the receiving STA receiving the control signal by Figure 1 The processors 111 and 121 shown in the sub-diagram (a) of Figure 1 Alternatively, 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 transceivers 113 and 123 shown in the sub-figure (a) of FIG. Figure 1The processing chips 114 and 124 shown in the sub-figure (b) of Figure 1 Technical characteristics of the control signals received in transceivers 113 and 123 shown in sub-figure (b).

[0058] Reference Figure 1 As shown in sub-figure (b), software codes 115 and 125 may be included in memories 112 and 122. Software codes 115 and 126 may include instructions for controlling operations of processors 111 and 121. Software codes 115 and 125 may be included as various programming languages.

[0059] Figure 1 The processors 111 and 121 or the processing chips 114 and 124 may include an application specific integrated circuit (ASIC), 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). Figure 1 The processors 111 and 121 or the processing chips 114 and 124 may be composed of The SNAPDRAGONTM processor series manufactured by EXYNOSTM processor series manufactured by Processor family manufactured by The HELIOTM processor series manufactured by The ATOMTM processor family manufactured by or enhanced from these processors.

[0060] In this specification, uplink may mean a link for communication from a non-AP STA to an SP STA, and an uplink PPDU / packet / signal, etc. may be transmitted through the uplink. In addition, in this specification, downlink may mean a link for communication from an AP STA to a non-AP STA, and a downlink PPDU / packet / signal, etc. may be transmitted through the downlink.

[0061] Figure 2 is a conceptual diagram showing the structure of a wireless local area network (WLAN).

[0062] Figure 2 The upper part of shows the structure of an infrastructure basic service set (BSS) of the Institute of Electrical and Electronics Engineers (IEEE) 802.11.

[0063] Reference Figure 2The 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 are successfully synchronized to communicate with each other, are not concepts indicating a specific area. BSS 205 may include one or more STAs 205-1 and 205-2 that may join one AP 230.

[0064] 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.

[0065] The distribution system 210 may implement an extended service set (ESS) 240 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 identification (SSID).

[0066] The portal 220 may serve as a bridge connecting a wireless LAN network (IEEE 802.11) and another network (eg, 802.X).

[0067] exist Figure 2 In the BSS shown in the upper part of FIG, a network between the APs 225 and 230 and a network between the APs 225 and 230 and the STAs 200-1, 205-1, and 205-2 can be implemented. However, a network is configured between the STAs to perform communication even without the APs 225 and 230. A network that performs communication by configuring a network between the STAs even without the APs 225 and 230 is defined as an ad hoc network or an independent basic service set (IBSS).

[0068] Figure 2 The lower part of FIG. 1 shows a conceptual diagram illustrating an IBSS.

[0069] Reference Figure 2 In the lower part, the IBSS is a BSS operating in a self-organizing mode. Since the IBSS does not include an access point (AP), there is no centralized management entity that performs management functions in the center. That is, in the IBSS, STA250-1, 250-2, 250-3, 255-4, and 255-5 are managed in a distributed manner. In the IBSS, all STA250-1, 250-2, 250-3, 255-4, and 255-5 can be composed of mobile STAs, and access to the DS is not allowed to form a self-contained network.

[0070] Figure 3Describe the general link establishment process.

[0071] In S310, the STA may perform a network discovery operation. The network discovery operation may include a scanning operation of the STA. That is, in order to access the network, the STA needs to discover participating networks. The STA needs to identify compatible networks before joining a wireless network, and the process of identifying a network present in a specific area is called scanning. Scanning methods include active scanning and passive scanning.

[0072] 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 the 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 a 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 the 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).

[0073] although Figure 3 Not 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 the 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.

[0074] After discovering the network, the STA may perform an authentication process in S320. This authentication process may be referred to as a first authentication process to clearly distinguish it from the security establishment operation in the subsequent 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 frame used for the authentication request / response is a management frame.

[0075] The authentication frame may include information about the authentication algorithm number, authentication transaction sequence number, status code, challenge text, robust security network (RSN), and limited cycle group.

[0076] The STA may send an authentication request frame to the AP. The AP may determine whether to allow authentication of the STA based on information included in the received authentication request frame. The AP may provide the STA with an authentication process result via an authentication response frame.

[0077] 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, a mobile domain, a 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 mobile domain, a timeout interval (association recovery time), overlapping BSS scanning parameters, a TIM broadcast response, and a QoS map.

[0078] 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).

[0079] Figure 4 An example of PPDU used in the IEEE standard is described.

[0080] 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).

[0081] Figure 4An example of HE PPDU according to IEEE 802.11ax is also included. Figure 4 The HE PPDU of is an exemplary PPDU for multiple users. The HE-SIG-B may be included only in the PPDU for multiple users, and the HE-SIG-B may be omitted in the PPDU for a single user.

[0082] like Figure 4 As shown, the HE-PPDU for multiple users (MU) 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 (ie, 4 or 8 μs).

[0083] The following describes a resource unit (RU) for a PPDU. A RU may include multiple subcarriers (or tones). A RU may be used to send signals to multiple STAs according to OFDMA. In addition, a RU may also be defined as sending a signal to one STA. A RU may be used for an STF, an LTF, a data field, etc.

[0084] Figure 5 The layout of resource units (RU) used in a 20 MHz frequency band will be described.

[0085] like Figure 5 As shown, resource units (RUs) corresponding to different numbers of tones (i.e., subcarriers) may be used to form some fields of the HE-PPDU. For example, resources may be allocated for the HE-STF, HE-LTF, and data fields in the RU shown.

[0086] like Figure 5 As shown in the uppermost part of , 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 bands. Each unit may be allocated to a receiving STA (i.e., a user).

[0087] Figure 5The layout of the RU in can be used not only for multiple users (MU) but also for a single user (SU), in which case one 242 unit can be used and three DC tones can be inserted, such as Figure 5 shown at the bottom.

[0088] 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).

[0089] Figure 6 The layout of RUs used in the 40 MHz frequency band is described.

[0090] Similar to using RUs with various sizes Figure 5 ,exist Figure 6 In the example of 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 the guard band in the leftmost band of the 40MHz band, and 11 tones can be used for the guard band in the rightmost band of the 40MHz band.

[0091] like Figure 6 As shown in FIG. 4, 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.

[0092] Figure 7 The layout of RUs used in the 80 MHz frequency band is described.

[0093] Similar to using RUs with various sizes Figure 5 and Figure 6 ,exist Figure 7 In the example of 26-RU, 52-RU, 106-RU, 242-RU, 484-RU, 996-RU, etc., 26-RU, 52-RU, 106-RU, 242-RU, 484-RU, 996-RU, etc. may be used. In addition, seven DC tones may be inserted in the center frequency, 12 tones may be used for a guard band in the leftmost band of the 80 MHz band, and 11 tones may be used for a guard band in the rightmost band of the 80 MHz band. In addition, 26-RU corresponding to 13 tones on each side of the left and right sides of the DC band may be used.

[0094] 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.

[0095] The RU 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 a 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.

[0096] For example, when configuring a DLMU 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 may allocate 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 through the first RU in one MU PPDU, and may transmit the HE-STF, HE-LTF, and data fields for the second STA through the second RU.

[0097] Information about the layout of RUs may be signaled via HE-SIG-B.

[0098] Figure 8 Describe the structure of the HE-SIG-B field.

[0099] As shown, the HE-SIG-B field 810 includes a common field 820 and a user-specific field 830. The common field 820 may include information commonly applied to all users (i.e., user STAs) receiving the SIG-B. The user-specific field 830 may be referred to as a user-specific control field. When the SIG-B is transmitted to multiple users, the user-specific field 830 may be applied only to any one of the multiple users.

[0100] like Figure 8 As shown, the common field 820 and the user-specific field 830 may be encoded separately.

[0101] The common field 820 may include N*8 bits of RU allocation information. For example, the RU allocation information may include information related to the location of the RU. For example, when Figure 5 When a 20 MHz channel is used as shown, the RU allocation information may include information on a specific frequency band where a specific RU (26-RU / 52-RU / 106-RU) is arranged.

[0102] An example of the case where the RU allocation information consists of 8 bits is as follows.

[0103] [Table 1]

[0104]

[0105] like Figure 5 As shown in the example of , up to nine 26-RUs can be allocated to a 20MHz channel. When the RU allocation information of the common field 820 is set to "00000000" as shown in Table 1, nine 26-RUs can be allocated to the corresponding channel (i.e., 20MHz). In addition, when the RU allocation information of the common field 820 is set to "00000001" as shown in Table 1, seven 26-RUs and one 52-RU are arranged in the corresponding channel. That is, in Figure 5 In the example of , a 52-RU may be allocated to the far right, and seven 26-RUs may be allocated to its left.

[0106] The example of Table 1 shows only some RU locations where RU allocation information can be displayed.

[0107] For example, the RU allocation information may include the example in Table 2 below.

[0108] [Table 2]

[0109]

[0110] "01000y2y1y0" relates 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 may be N+1.

[0111] Generally, multiple STAs (eg, user STAs) different from each other may be allocated to multiple RUs. However, multiple STAs (eg, user STAs) may be allocated to one or more RUs having at least a specific size (eg, 106 subcarriers) based on the MU-MIMO scheme.

[0112] like Figure 8As 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 can 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 can be allocated to each of the nine 26-RUs (e.g., nine user STAs can be allocated). That is, up to 9 user STAs can be allocated to a specific channel through the OFDMA scheme. In other words, up to 9 user STAs can be allocated to a specific channel through a non-MU-MIMO scheme.

[0113] For example, when RU allocation is set to "01000y2y1y0", multiple STAs can be allocated to the 106-RU arranged on the leftmost side through the MU-MIMO scheme, and five user STAs can be allocated to the five 26-RUs arranged on the right side thereof through the non-MU MIMO scheme. Fig. 9 .

[0114] Fig. 9 An example of allocating multiple user STAs to the same RU through the MU-MIMO scheme is described.

[0115] For example, when Fig. 9 When the RU allocation is set to "01000010", the 106-RU can be allocated to the leftmost side of a specific channel, and five 26-RUs can be allocated to its right side. In addition, three user STAs can be allocated to the 106-RU through the MU-MIMO scheme. As a result, since eight user STAs are allocated, the user-specific field 830 of the HE-SIG-B can include eight user fields.

[0116] Eight user fields can be pressed Fig. 9 In addition, Figure 8 As shown, two user fields can be implemented using one user block field.

[0117] Figure 8 and Fig. 9 The user field shown may be configured based on two formats. That is, the user field related to the MU-MIMO scheme may be configured in a first format, and the user field related to the non-MIMO scheme may be configured in a second format. Fig. 9 In the example of , 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).

[0118] 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.

[0119] For example, the first bit (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. In addition, the second bit (i.e., B11-B14) in the user field (i.e., 21 bits) may include information related to the space configuration. Specifically, examples of the second bit (i.e., B11-B14) may be shown in Tables 3 and 4 below.

[0120] [Table 3]

[0121]

[0122] [Table 4]

[0123]

[0124] 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. Fig. 9 When 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 Fig. 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.

[0125] As shown in the examples of Table 3 and / or Table 4, the information about the number of spatial streams for the user STA (i.e., the second bits, B11-B14) may consist of 4 bits. In addition, the information about the number of spatial streams for the user STA (i.e., the second bits, B11-B14) may support up to eight spatial streams. In addition, the information about the number of spatial streams for the user STA (i.e., the second bits, B11-B14) may support up to four spatial streams for one user STA.

[0126] 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.

[0127] The MCS, MCS information, MCS index, MCS field, etc. used in this specification may be indicated by an index value. For example, the MCS information may be indicated by index 0 to index 11. The MCS information may include information related to the constellation modulation type (e.g., BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM, 1024-QAM, etc.) and information related to the coding rate (e.g., 1 / 2, 2 / 3, 3 / 4, 5 / 6e, etc.). Information related to the channel coding type (e.g., LCC or LDPC) may not be included in the MCS information.

[0128] In addition, the fourth bit (ie, B19) in the user field (ie, 21 bits) may be a reserved field.

[0129] In addition, the fifth bit (ie, B20) in the user field (ie, 21 bits) may include information on the coding type (eg, BCC or LDPC). That is, the fifth bit (ie, B20) may include information on the type of channel coding (eg, BCC or LDPC) applied to the data field in the PPDU including the corresponding SIG-B.

[0130] The above example relates to a user field in the first format (format of the MU-MIMO scheme). An example of a user field in the second format (format of the non-MU-MIMO scheme) is as follows.

[0131] 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).

[0132] Fig.10UL-MU-based operation is 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 a trigger frame 1030. Upon receiving a PPDU including a trigger frame, a trigger-based (TB) PPDU is transmitted after a delay corresponding to SIFS.

[0133] The TBPPDUs 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 TBPPDU may be implemented in various forms.

[0134] Reference Figures 11 to 13 Describes specific features of the trigger frame. Even when UL-MU communication is used, an Orthogonal Frequency Division Multiple Access (OFDMA) scheme or a MU-MIMO scheme may be used, and OFDMA and MU-MIMO schemes may be used simultaneously.

[0135] Fig.11 An example of a trigger frame is shown. Fig.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.

[0136] Fig.11 The various fields shown may be partially omitted, and another field may be added. In addition, the length of each field may be changed to be different from that shown in the figure.

[0137] Fig.11 The frame control field 1110 may include information related to the MAC protocol version and additional additional control information. The duration field 1120 may include time information configured by the NAV or information related to an identifier (eg, AID) of the STA.

[0138] In addition, the RA field 1130 may include address information of the receiving STA of the corresponding trigger frame, and may be optionally omitted. The TA field 1140 may include address information of the STA (e.g., AP) that sends the corresponding trigger frame. The public information field 1150 includes public control information applied to the receiving STA that receives the corresponding trigger frame. For example, a field indicating the length of the L-SIG field of the uplink PPDU sent in response to the corresponding trigger frame or information for controlling the content of the SIG-A field (i.e., HE-SIG-A field) of the uplink PPDU sent in response to the corresponding trigger frame may be included. In addition, as public control information, information related to the length of the CP of the uplink PPDU sent in response to the corresponding trigger frame or information related to the length of the LTF field may be included.

[0139] In addition, preferably including and receiving Fig.11 The number of receiving STAs of the trigger frame corresponds to the per-user information fields 1160#1 to 1160#N. The per-user information field may also be referred to as an "allocation field".

[0140] in addition, Fig.11 The trigger frame may include a padding field 1170 and a frame check sequence field 1180 .

[0141] Fig.11 Each of the illustrated per-user information fields 1160#1 to 1160#N may include a plurality of subfields.

[0142] Fig.12 An example illustrating the common information field of a trigger frame. Fig.12 The subfields of may be partially omitted, and additional subfields may be added. In addition, the lengths of the various subfields shown may be changed.

[0143] The length field 1210 shown has the same value as the length field of the L-SIG field of the uplink PPDU sent 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.

[0144] In addition, the tandem identifier field 1220 indicates whether a tandem operation is performed. The tandem operation means that downlink MU transmission and uplink MU transmission are performed together in the same TXOP. That is, it means that downlink MU transmission is performed, and then uplink MU transmission is performed after a preset time (e.g., SIFS). During the tandem operation, only one transmitting device (e.g., AP) can perform downlink communication, and multiple transmitting devices (e.g., non-AP) can perform uplink communication.

[0145] 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.

[0146] 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.

[0147] The CP and LTF type field 1250 may include information related to 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, requesting a block ACK / NACK, etc.

[0148] 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 a typical trigger. For example, the basic type of trigger frame can be referred to as a basic trigger frame.

[0149] Fig.13 An example of subfields included in the per-user information field is described. Fig.13 The user information field 1300 may be understood as referring to the above Fig.11 Any of the per-user information fields 1160#1 to 1160#N mentioned above. Included in Fig.13 The subfields in the user information field 1300 may be partially omitted, and additional subfields may be added. In addition, the length of each subfield shown may be changed.

[0150] Fig.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 an association identifier (AID) value of the receiving STA.

[0151] 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 TBPPDU in response to the trigger frame, the TBPPDU 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.

[0152] Fig.13The subfield of may include a coding type field 1330. The coding type field 1330 may indicate the coding type of the TBPPDU. For example, when BCC coding is applied to the TBPPDU, 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".

[0153] in addition, Fig.13 The subfield of 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".

[0154] Hereinafter, a UL OFDMA-based random access (UORA) scheme will be described.

[0155] Fig.14 Describe the technical features of the UORA scheme.

[0156] The sending STA (e.g., AP) can Fig.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, Fig.13 The information related to RU 1 to RU 6 may be included in, for example, the user identifier field 1310. Fig.13 AID=0 may mean UORA resources for associated STAs, and AID=2045 may mean UORA resources for non-associated STAs. Fig.14 The 1st to 3rd RU resources can be used as UORA resources for associated STAs. Fig.14 The 4th RU resource and the 5th RU resource can be used as UORA resources for non-associated STAs. Fig.14 The 6th RU resources may be used as typical resources for UL MU.

[0157] exist Fig.14In 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. Fig.14 For STA4 in , since the AID of STA4 (eg, AID=3) is included in the trigger frame, resources of RU 6 are allocated without backoff.

[0158] Specifically, due to Fig.14 STA1 is the associated STA, so the total number of qualified RA RUs for STA1 is 3 (RU1, RU 2, and RU 3), so STA1 decrements the OBO counter by 3 to make the OBO counter 0. In addition, since Fig.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, due to Fig.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.

[0159] Fig.15 Illustrate examples of channels used / supported / defined in the 2.4 GHz band.

[0160] The 2.4 GHz band may be referred to by other terms such as a first frequency band. In addition, the 2.4 GHz band may mean a frequency domain that uses / supports / defines channels having center frequencies close to 2.4 GHz (eg, channels having center frequencies within 2.4 to 2.5 GHz).

[0161] 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 as various terms such as channel numbers. The specific values ​​of channel indices and center frequencies may vary.

[0162] Fig.15An example is given of 4 channels within the 2.4 GHz frequency band. Each of the 1st frequency domain 1510 to the 4th frequency domain 1540 shown herein may include one channel. For example, the 1st 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 2nd frequency domain 1520 may include channel 6. In this case, the center frequency of channel 6 may be set to 2437 MHz. The 3rd frequency domain 1530 may include channel 11. In this case, the center frequency of channel 11 may be set to 2462 MHz. The 4th frequency domain 1540 may include channel 14. In this case, the center frequency of channel 14 may be set to 2484 MHz.

[0163] Fig.16 Illustrate examples of channels used / supported / defined in the 5 GHz band.

[0164] The 5 GHz band may be referred to as other terms such as a second frequency band, etc. The 5 GHz band may mean 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 band may include multiple channels between 4.5 GHz and 5.5 GHz. Fig.16 The specific values ​​shown may be varied.

[0165] Multiple channels within the 5 GHz band include Unlicensed National Information Infrastructure (UNII)-1, UNII-2, UNII-3, and ISM. UNII-1 may be referred to as UNII Low. UNII-2 may include frequency domains referred to as UNII Mid and UNII-2 Extended. UNII-3 may be referred to as UNII-Upper.

[0166] A plurality of channels may be configured within the 5 GHz frequency band, and the bandwidth of each channel may be set differently, for example, to 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 may be divided into eight 20 MHz channels. The 5170 MHz to 5330 MHz frequency domain / range may be divided into four channels via a 40 MHz frequency domain. The 5170 MHz to 5330 MHz frequency domain / range may be divided into two channels via an 80 MHz frequency domain. Alternatively, the 5170 MHz to 5330 MHz frequency domain / range may be divided into one channel via a 160 MHz frequency domain.

[0167] Fig.17 Illustrate examples of channels used / supported / defined in the 6 GHz band.

[0168] The 6 GHz frequency band may be referred to as other terms such as a third frequency band, etc. The 6 GHz frequency band may mean a frequency domain that uses / supports / defines channels having a center frequency greater than or equal to 5.9 GHz. Fig.17 The specific values ​​shown may be varied.

[0169] For example, Fig.17 The 20MHz channel can be defined starting from 5.940GHz. Fig.17 Among the 20 MHz channels of the channel, the leftmost channel may have an index of 1 (or a channel index, a channel number, etc.), and 5.945 GHz may be assigned as the center frequency. That is, the center frequency of the channel of index N may be determined to be (5.940+0.005*N) GHz.

[0170] therefore, Fig.17 The index (or channel number) of the 2MHz channel 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, Fig.17 The index of the 40MHz 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.

[0171] Despite Fig.17 20, 40, 80, and 160 MHz channels are illustrated in the example of FIG. 1 , but a 240 MHz channel or a 320 MHz channel may be additionally added.

[0172] Hereinafter, a PPDU transmitted / received in a STA of the present specification will be described.

[0173] Fig.18 An example of PPDU used in this specification is described.

[0174] Fig.18The PPDU of the WLAN 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 the present 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.

[0175] Fig.18 The PPDU may indicate all or part of the PPDU type used in the EHT system. For example, Fig.18 The example of can be used for both single user (SU) mode and multi-user (MU) mode. In other words, Fig.18 The PPDU may be a PPDU for one receiving STA or multiple receiving STAs. Fig.18 When the PPDU is used in trigger-based (TB) mode, it can be omitted Fig.18 In other words, a STA that has received a trigger frame for uplink MU (UL-MU) may send an EHT-SIG in Fig.18 The PPDU of EHT-SIG is omitted in the example.

[0176] exist Fig.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 a physical layer.

[0177] You can Fig.18 The subcarrier spacing of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG and EHT-SIG fields is determined to be 312.5kHz, and the subcarrier spacing of the EHT-STF, EHT-LTF and data fields can be determined to be 78.125kHz. That is, the tone index (or subcarrier index) of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, EHT-SIG fields can be expressed in units of 312.5kHz, and the tone index (or subcarrier index) of the EHT-STF, EHT-LTF and data fields can be expressed in units of 78.125kHz.

[0178] exist Fig.18 In the PPDU, the L-LTF and L-STF can be the same as those in the regular fields.

[0179] Fig.18The L-SIG field may include, for example, 24 bits of bit information. For example, the 24-bit information may include a 4-bit rate field, a 1-bit reserved bit, a 12-bit length field, a 1-bit parity bit, and a 6-bit tail bit. 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 type of the PPDU. For example, when the PPDU is a non-HT, HT, VHT PPDU, or EHT PPDU, the value of the length field may be determined as a multiple of 3. For example, when the PPDU is an HE PPDU, the length field may be determined as "a multiple of 3" + 1 or "a multiple of 3" + 2. In other words, for non-HT, HT, VHT PPDU, or EHT PPDU, the value of the length field may be determined as a multiple of 3, and for HE PPDU, the value of the length field may be determined as "a multiple of 3" + 1 or "a multiple of 3" + 2.

[0180] For example, the transmitting STA may apply BCC encoding based on a 1 / 2 coding rate 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 positions other than the pilot subcarriers {subcarrier indexes -21, -7, +7, +21} and the DC subcarrier {subcarrier index 0}. As a result, the 48 BPSK symbols may be mapped to subcarrier indexes -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 of {-1, -1, -1, 1} to the subcarrier index {-28, -27, +27, +28}. The aforementioned signal may be used for channel estimation in the frequency domain corresponding to {-28, -27, +27, +28}.

[0181] The transmitting STA may generate the RL-SIG in the same manner as the L-SIG. BPSK modulation may be applied to the RL-SIG. Based on the presence of the RL-SIG, the receiving STA may know whether the RX PPDU is a HE PPDU or an EHT PPDU.

[0182] The Universal SIG (U-SIG) can be inserted in Fig.18 The U-SIG can be referred to by various terms such as a first SIG field, a first SIG, a first type SIG, a control signal, a control signal field, a first (type) control signal, etc.

[0183] 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 (e.g., OFDM symbol) used for the U-SIG may have a duration of 4 μs. Each symbol of the U-SIG may be used to send 26 bits of information. For example, each symbol of the U-SIG may be sent / received based on 52 data tones and 4 pilot tones.

[0184] Through U-SIG (or U-SIG field), for example, A-bit information (e.g., 52 uncoded bits) can be transmitted. The first symbol of U-SIG can transmit the first X bits of information of A-bit information (e.g., 26 uncoded bits), and the second symbol of U-SIG can transmit the remaining Y bits of information of A-bit information (e.g., 26 uncoded bits). For example, the transmitting STA can obtain 26 uncoded bits included in each U-SIG symbol. The transmitting STA can perform convolutional coding (i.e., BCC coding) based on a rate of R=1 / 2 to generate 52 coded bits, and can perform interleaving on the 52 coded bits. The transmitting STA can perform BPSK modulation on the interleaved 52 coded bits to generate 52 BPSK symbols to be assigned to each U-SIG symbol. In addition to DC index 0, one U-SIG symbol can be sent based on 65 tones (subcarriers) from subcarrier index -28 to subcarrier index +28. The 52 BPSK symbols generated by the transmitting STA may be transmitted based on the remaining tones (subcarriers) excluding the pilot tones, namely, tones -21, -7, +7, +21.

[0185] For example, the A-bit information (e.g., 52 uncoded bits) generated by the U-SIG may include a CRC field (e.g., a field with a length of 4 bits) and a tail field (e.g., a field with a length of 6 bits). The CRC field and the tail field may be transmitted through the second symbol of the U-SIG. The CRC field may be generated based on the 26 bits of the first symbol allocated to the U-SIG and the remaining 16 bits in the second symbol excluding the CRC / tail field, and may be generated based on a conventional CRC calculation algorithm. In addition, the tail field may be used to terminate the trellis of the convolutional decoder and may be set to, for example, "000000".

[0186] The A-bit information (e.g., 52 uncoded bits) transmitted by the U-SIG (or U-SIG field) may be divided into version-independent bits and version-dependent bits. For example, the version-independent bits may have a fixed or variable size. For example, the version-independent bits may be assigned only to the first symbol of the U-SIG, or the version-independent bits may be assigned to both the first symbol and the second symbol of the U-SIG. For example, the version-independent bits and the version-dependent bits may be referred to by various terms such as a first control bit, a second control bit, etc.

[0187] 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, the first value of the 3-bit PHY version identifier may indicate that the TX / RX PPDU is an EHT PPDU. In other words, when the transmitting STA transmits an EHT PPDU, the 3-bit PHY version identifier may be set to a first value. In other words, the receiving STA may determine that the RX PPDU is an EHT PPDU based on the PHY version identifier having a first value.

[0188] For example, the version-independent bits of the U-SIG may include a 1-bit UL / DL Flag field. 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.

[0189] 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.

[0190] 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 can be included in the version-related bit of the U-SIG.

[0191] 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 a 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 EHT-LTF / STF; and 7) information related to a field indicating the EHT-LTF length and the CP length.

[0192] Can Fig.18 Preamble puncturing is applied to the PPDU of the primary 20 MHz band. Preamble puncturing implies that puncturing is applied to part of the full band (e.g., the secondary 20 MHz band). For example, when sending an 80 MHz PPDU, the STA may apply puncturing to the secondary 20 MHz band in the 80 MHz band, and may send the PPDU only through the primary 20 MHz band and the secondary 40 MHz band.

[0193] For example, the pattern of the leading perforation can be preconfigured. For example, when the first perforation pattern is applied, perforation can be applied only to the auxiliary 20 MHz band in the 80 MHz band. For example, when the second perforation pattern is applied, perforation 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 perforation pattern is applied, perforation can be applied only to the auxiliary 20 MHz band in the main 80 MHz band included in the 160 MHz band (or the 80+80 MHz band). For example, when the fourth perforation pattern is applied, perforation can be applied to at least one 20 MHz channel that does not belong to the main 40 MHz band in the presence of the main 40 MHz band in the 80 MHz band included in the 160 MHz band (or the 80+80 MHz band).

[0194] Information related to the preamble puncturing applied to the PPDU may be included in the U-SIG and / or the EHT-SIG. For example, the first field of the U-SIG may include information related to the continuous bandwidth, and the second field of the U-SIG may include information related to the preamble puncturing applied to the PPDU.

[0195] For example, based on the following method, the U-SIG and the EHT-SIG may include information related to the preamble puncturing. 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 puncturing applied to the first 80 MHz band (i.e., information related to the preamble puncturing 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 puncturing applied to the second 80 MHz band (i.e., information related to the preamble puncturing pattern). Meanwhile, the EHT-SIG continuous with the first U-SIG may include information related to 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 preamble puncturing applied to the first 80 MHz band (i.e., information related to the preamble puncturing pattern).

[0196] Additionally or alternatively, based on the following method, the U-SIG and the EHT-SIG may include information related to preamble puncturing. The U-SIG may include information related to preamble puncturing for all frequency bands (ie, 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 (ie, information related to the preamble puncturing pattern).

[0197] The U-SIG can be configured in units of 20 MHz. For example, when an 80 MHz PPDU is configured, the U-SIG can be duplicated. That is, four identical U-SIGs can be included in the 80 MHz PPDU. PPDUs with bandwidths exceeding 80 MHz can include different U-SIGs.

[0198] Fig.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 for the EHT-SIG may be included in the U-SIG.

[0199] The EHT-SIG may include reference Figure 8 and Fig. 9For 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 may be omitted, and the number of user-specific fields may be determined based on the number of users.

[0200] As in Figure 8 In the example of , the common field of EHT-SIG and the user-specific field of EHT-SIG may be encoded separately. One user block field included in the user-specific field may include information for two users, but the last user block field included in the user-specific field may include information for one user. That is, one user block field of EHT-SIG may include a maximum of two user fields. Fig. 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.

[0201] 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".

[0202] As in Figure 8 In the example of , the common field of EHT-SIG may include RU allocation information. The RU allocation information may imply information related to the location of the RU to which multiple users (ie, multiple receiving STAs) are allocated. The RU allocation information can be configured in units of 8 bits (or N bits), as shown in Table 1.

[0203] The examples of 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, and some entries in Tables 5 to 7 may be omitted, and entries may be added (not shown).

[0204] 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 where nine 26-RUs are allocated separately (e.g., Figure 5 Nine 26-RU cases shown in the figure) were used.

[0205] In addition, multiple RUs may be allocated to one STA in the EHT system. For example, with respect to "index 60" of Table 6, one 26-RU may be allocated to the leftmost user (ie, receiving STA) of the 20 MHz band, one 26-RU and one 52-RU may be allocated to the right side thereof, and five 26-RUs may be allocated to the right side thereof separately.

[0206] [Table 5]

[0207]

[0208] [Table 6]

[0209]

[0210] [Table 7]

[0211]

[0212] A mode in which the common field of the EHT-SIG is omitted may be supported. The mode in which the common field of the EHT-SIG is omitted may be referred to as a compressed mode. When the compressed mode is used, multiple users (ie, multiple receiving STAs) may decode the PPDU (eg, the data field of the PPDU) based on non-OFDMA. That is, multiple users of the EHT PPDU may decode the PPDU (eg, the data field of the PPDU) received via the same frequency band. In addition, when the non-compressed mode is used, multiple users of the EHT PPDU may decode the PPDU (eg, the data field of the PPDU) based on OFDMA. That is, multiple users of the EHT PPDU may receive the PPDU (eg, the data field of the PPDU) via different frequency bands.

[0213] The EHT-SIG may be configured based on various MCS schemes. As described above, information related to the MCS scheme applied to the EHT-SIG may be included in the U-SIG. The EHT-SIG may be configured based on the DCM scheme. For example, among the N data tones (e.g., 52 data tones) allocated to the EHT-SIG, a first modulation scheme may be applied to half of the continuous tones, and a second modulation scheme may be applied to the remaining half of the continuous tones. That is, the transmitting STA may use a first modulation scheme to modulate specific control information by a first symbol and assign it to half of the continuous tones, and may use a second modulation scheme to modulate the same control information by using a second symbol and assign it to the remaining half of the continuous tones. As described above, information (e.g., a 1-bit field) regarding whether the DCM scheme is applied to the EHT-SIG may be included in the U-SIG.

[0214] Fig.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. Fig.18 The HE-LTF can be used to estimate the channel in a MIMO environment or an OFDMA environment.

[0215] Can be set according to various types Fig.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 may have a period of 0.8 μs, and the periodic signal of 0.8 μs may 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) may 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 may have a period of 1.6 μs, and the periodic signal of 1.6 μs may be repeated 5 times to become a second type of STF with a length of 8 μs. In the following, an example of a sequence for configuring the EHT-STF (i.e., an EHT-STF sequence) is proposed. The following sequence can be modified in various ways.

[0216] The EHT-STF may be configured based on the following sequence M.

[0217] <Formula 1>

[0218] M={–1,–1,–1,1,1,1,–1,1,1,1,–1,1,1,–1,1}

[0219] The EHT-STF for a 20MHz PPDU may be configured based on the following formula. The following example may be a first type (ie, 1xSTF) sequence. For example, a 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 a duration of b tone intervals (ie, subcarrier intervals) defined from tone index (ie, subcarrier index) 'a' to tone index 'c'. For example, the following formula 2 may represent a sequence of 16 tone intervals defined from tone index -112 to tone index 112. Since a subcarrier spacing of 78.125kHz is applied to EHT-STR, 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.

[0220] <Formula 2>

[0221] EHT-STF(-112:16:112)={M}*(1+j) / sqrt(2)

[0222] EHT-STF(0)=0

[0223] 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.

[0224] <Formula 3>

[0225] EHT-STF(-240:16:240)={M,0,-M}*(1+j) / sqrt(2)

[0226] 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.

[0227] <Formula 4>

[0228] EHT-STF(-496:16:496)={M,1,–M,0,–M,1,–M}*(1+j) / sqrt(2)

[0229] The EHT-STF for 160 MHz PPDU may be configured based on the following equation: The following example may be a first type (ie, 1xSTF) sequence.

[0230] <Formula 5>

[0231] EHT-STF(-1008:16:1008)={M,1,–M,0,–M,1,–M,0,–M,–1,M,0,–M,1,–M}*(1+j) / sqrt(2)

[0232] 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.

[0233] <Formula 6>

[0234] EHT-STF(-496:16:496)={-M,-1,M,0,–M,1,–M}*(1+j) / sqrt(2)

[0235] The following Equations 7 to 11 are related to an example of a second type (ie, 2x STF) sequence.

[0236] <Formula 7>

[0237] EHT-STF(-120:8:120)={M,0,-M}*(1+j) / sqrt(2)

[0238] The EHT-STF for 40 MHz PPDU may be configured based on the following equation.

[0239] <Formula 8>

[0240] EHT-STF(-248:8:248)={M,–1,–M,0,M,–1,M}*(1+j) / sqrt(2)

[0241] EHT-STF(-248)=0

[0242] EHT-STF(248)=0

[0243] The EHT-STF for 80 MHz PPDU may be configured based on the following equation.

[0244] <Formula 9>

[0245] EHT-STF(-504:8:504)={M,–1,M,–1,–M,–1,M,0,–M,1,M,1,–M,1,–M}*(1+j) / sqrt(2)

[0246] The EHT-STF for 160 MHz PPDU may be configured based on the following formula.

[0247] <Formula 10>

[0248] 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)

[0249] EHT-STF(-8)=0,EHT-STF(8)=0,

[0250] EHT-STF(-1016)=0,EHT-STF(1016)=0

[0251] 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.

[0252] <Formula 11>

[0253] EHT-STF(-504:8:504)={–M,1,–M,1,M,1,–M,0,–M,1,M,1,–M,1,–M}*(1+j) / sqrt(2)

[0254] EHT-STF(-504)=0,

[0255] EHT-STF(504)=0

[0256] The EHT-LTF may have first, second, and third types (i.e., 1x, 2x, 4x LTF). For example, the first / second / third type LTF may 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 may 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) may be applied to the first / second / third type LTF.

[0257] Information related to the type of STF and / or LTF (including information related to the GI applied to the LTF) may be included in Fig.18 SIG-A field and / or SIG-B field, etc.

[0258] Can be based on Figure 5 and Figure 6 Example to configure Fig.18 PPDU (e.g., EHT-PPDU).

[0259] For example, based on Figure 5 The RU is used to configure the EHT PPDU sent on the 20MHz band, that is, the 20MHz EHT PPDU. 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.

[0260] 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.

[0261] because Figure 6 The RU position corresponds to 40MHz, so it can be Figure 6 The tone plan for 80 MHz is determined when the pattern of is repeated twice. That is, the tone plan for 80 MHz can be determined based on Figure 7 The RU is Figure 6 The RU repeats the new tone schedule twice to send the 80 MHz EHTP PDU.

[0262] 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 the 80 MHz EHT PPDU allocated based on OFDMA can have 23 DC tones. Different from this, the 80 MHz EHT PPDU allocated based on non-OFDMA (i.e., non-OFDMA full bandwidth 80 MHz PPDU) can be configured based on 996-RU and can include 5 DC tones, 12 left guard tones, and 11 right guard tones.

[0263] Can Figure 6 The pattern is repeated several times in such a way that the tone plan for 160 / 240 / 320MHz is configured.

[0264] Based on the following method Fig.18 The PPDU is determined (or identified) as an EHT PPDU.

[0265] 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 as 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 Fig.18 The type of the EHT PPDU (e.g., SU / MU / triggered / extended range type) can be detected by using bit information included in the symbol after 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 continuous with the L-SIG field and is the same as the L-SIG; 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).

[0266] For example, 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 is a BPSK symbol; 2) when an RL-SIG in which the L-SIG 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 is "1" or "2", the RX PPDU may be determined as a HEPPDU.

[0267] For example, the receiving STA may determine the type of the RX PPDU as non-HT, HT, and VHT PPDU based on the following aspects. 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, and VHT PPDU. In addition, even if the receiving STA detects RL-SIG repetition, when it is detected that 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, and VHT PPDU.

[0268] 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 Fig.18 PPDU transmission / reception signal. Fig.18 The PPDU can be used to send / receive various types of frames. For example, Fig.18 The PPDU may 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) notification, and trigger frames. For example, Fig.18 The PPDU may 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, Fig.18 The PPDU can be used for data frames. For example, Fig.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.

[0269] Fig.19 An example of a transmission device and / or a reception device of a modification of the present specification is described.

[0270] Figure 1 Each device / STA of sub-graph (a) / (b) can be modified as follows Fig.19 shown. Fig.19 The transceiver 630 can be used with Figure 1 The transceivers 113 and 123 are the same. Fig.19 The transceiver 630 may include a receiver and a transmitter.

[0271] Fig.19 The processor 610 can be used with Figure 1 The processors 111 and 121 are the same. Alternatively, Fig.19 The processor 610 can be used with Figure 1 The processing chips 114 and 124 are the same.

[0272] Fig.19 The memory 620 can be connected with Figure 1 The memories 112 and 122 are the same. Alternatively, Fig.19 The memory 620 may be Figure 1 The memories 112 and 122 are different separate external memories.

[0273] Reference Fig.19 , the power management module 611 manages the power for the processor 610 and / or the transceiver 630. The battery 612 supplies power to the power management module 611. The display 613 outputs the results processed by the processor 610. The keypad 614 receives input to be used by the processor 610. The keypad 614 may be displayed on the display 613. The 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 telephony devices such as mobile phones and computers.

[0274] Reference Fig.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.

[0275] The 20 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0276] HELTF -122，122 =

[0277] {0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,00,00,00,+1,00,00,00,+1,00,00,00,00,+1,0 ,0,0,-1,0,0,0,-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 ,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}

[0278] The 40 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0279] HELTF -244，244 =

[0280] {+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+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,-1,0,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+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,+1,0,0,0,0,+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,+1,0,0,0,0 ,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+ 1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,+1},

[0281] The 80 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0282] 80MHz:

[0283] HELTF -500，500 =

[0284] {-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-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，O，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，+1，0，0，0，+1，0，0，0，-1，0，0，0，-1，0，0，0，+1，0,0,0,-1,0,0,0,+1,0,0,0,-1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,+1,0,0,0,-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,+1,0,0,0,-1,0,0,0,-1,0,0,0,-1,0,0,0,+1,0,0,0,0,+1},

[0285] The 160 MHz band 1x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0286] 160MHz:

[0287] HELTF -1012，1012 =

[0288] {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}

[0289] LTF 80MHz_lower_1x ={LTF 80MHz_left_1x ,0,LT F80MHz_right_1x}Should be used in the lower 80MHz band

[0290] LTF 80MHz_upper_1x ={LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}Should be used in the upper 80MHz band

[0291] 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},

[0292] 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,+1,0,0,0,0,+1},

[0293] In case of 80+80MHz transmission using 1x HE-LTF, the lower 80MHz band shall use HELTF- -500，500 - = LTF 80MHz_lower_1x 80MHz 1xHE-LTF sequence, the upper 80MHz band should use HELTF- -500，500 - = LTF 80MHz_upper_1x 80MHz 1xHE-LTF sequence.

[0294] The 20 MHz band 2x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0295] HELTF -122，122 =

[0296] {-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1 ,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+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}

[0297] The 40 MHz band 2x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0298] HELTF -244，244 =

[0299] {+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，-1，0，+1，0，+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},

[0300] The 80 MHz band 2x HE-LTF specified in the existing 802,11ax (ie, HE) is as follows.

[0301] HELTF -500,500 =

[0302] {+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，v1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，+1，0，-1，0，-1，0，+1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，+1，0，+1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，+1，0，+1，0，+1，0，-1，0，+1，0，-1，0，-1，0，-1，0，+1，0，-1，0，-1，0，-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,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0},

[0303] The 160 MHz band 2x HE-LTF specified in the existing 802,11ax (ie, HE) is as follows.

[0304] 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,LTF8 0MHz_upper_2x}

[0305] LTF 80MHz_lower_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 lower 80MHz frequency sub-block

[0306] 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

[0307] 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}

[0308] 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}

[0309] 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}

[0310] 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}

[0311] 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}

[0312] In case of 80+80MHz transmission using 2x HE-LTF, the lower 80MHz band shall use HELTF- -500，500- =LTF 80MHz_lower_2x 80MHz 2xHE-LTF sequence, the upper 80MHz band should use HELTF- -500，500- =LTF 80MHz_uper_2x 80MHz 2xHE-LTF sequence.

[0313] The 20 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0314] HELTF -122，122 =

[0315] {-1,-1,+1,-1,+1,+1,+1,+1,-1,+1,+1,+1,-1,-1,+1,+1,-1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,-1,+1,+1,+1,-1,-1,+1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1,-1,+1,+1, ,-1,-1,-1,+1,-1,-1,+1,-1,-1,-1,-1,-1,+1,-1,-1,-1,-1,+1,-1,-1,-1,-1,-1,+1,-1,-1,-1,-1,+1,-1,-1,-1,-1,+1,-1,-1,-1,+1,+1,-1,+1,+1,-1,+1,-1,+1,-1,+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, +1, +1, +1, -1, +1, -1, -1, -1, +1, +1, -1, -1, -1, -1, +1, -1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, +1, -1, -1, -1,+1,+1,-1,+1,+1,+1,+1,+1,+1,-1,+1,+1,-1,-1,-1,-1,-1,+1,-1,+1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,-1,-1,+1,+1,-1,-1,+1,+1,-1,-1,+1,+1,+1,-1,-1,+1,+1,+1,-1,+1,+1,-1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,-1,+1,+1}

[0316] The 40 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0317] HELTF -244，244 =

[0318] {+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，+1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，+1，-1，+1，+1，+1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，-1，-1，-1，-1，+1，-1，+1，+1，+1，-1，-1，+1，+1，+1，-1，-1，-1，-1，-1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，-1，-1，+1，+1，-1，-1，-1，+1，+1，+1，+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},

[0319] The 80 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0320] HELTF -500，500 =

[0321] {+1，+1，-1，+1，-1，+1，-1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，+1，+1，+1，-1，-1，-1，-1，-1，-1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，+1，-1，+1，+1，-1，+1，-1，-1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，+1，-1，-1，-1，-1，-1，-1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，+1，-1，-1，+1，+1，+1，-1，+1，-1，-1，+1，-1，-1，+1，-1，+1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，+1，-1，+1，-1，+1，+1，+1，-1，+1，+1，+1，-1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，-1，+1，-1，+1，-1，+1，+1，-1，-1，+1，-1，-1，-1，+1，+1，-1，+1，+1，+1，+1，-1，-1，-1，+1，+1，+1，+1，-1，-1，+1，+1，+1，+1，+1，+1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-1，+1，-1，-1，+1，+1，-1，+1，-1，+1，+1，+1，+1，+1，-1，-1，+1，+1，+1，-1，+1，+1，-1，-1，-1，+1，-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}，

[0322] The 160 MHz band 4x HE-LTF specified in the existing 802.11ax (ie, HE) is as follows.

[0323] HELTF -1012,1012 ={LFF 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}

[0324] LTF 80MHz_lower_4x ={LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x}Should be used in the lower 80MHz band

[0325] LTF 80MHz_upper_4x ={LTF 80MHz_left_4x ,0,-LTF 80MMHz_right_4x}Should be used in the upper 80MHz band

[0326] 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，+1，-1，-1，+1，-1，+1，-1，-1，-1，-1，-1，+1，+1，-1，-1，-1，+1,-1,-1,+1,+1,+1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,+1,-1,+1,+1,-1,+1,-1,+1,-1,+1,+1,+1,-1,+1,+1,+1,-1,-1,+1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,-1,+1,-1,+1,+1,-1,-1,+1,-1,-1,-1,+1,+1,-1,+1,+1,+1,+1,-1,-1,-1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1, ， +1,+1,-1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,+1,-1,-1,+1,+1,-1,+1,-1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-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}

[0327] 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,-1,+1,1,+1},

[0328] In case of 80+80MHz transmission using 4x HE-LTF, the lower 80MHz band shall use HELTF- -500，500 - = LTF 80MHz_lower_4x 80MHz 4xHE-LTF sequence, the upper 80MHz band should use HELTF- -500，500 - = LTF 80MHz_upper_4x 80MHz4xHE-LTF sequence.

[0329] This specification proposes a 320MHz band 1x EHT-LTF sequence considering both 240MHz transmission and 320MHz transmission. For example, when used only in a non-OFDMA environment as in legacy 11ax, the RU considering 320MHz non-OFDMA transmission and 240MHz non-OFDMA can be as follows.

[0330] 1.4*996RU (using the entire 320MHz)

[0331] 2.3*996RU (240MHz transmission)

[0332] 3.3*996+484RU (280MHz transmission)

[0333] 4.2*996RU (160MHz transmission)

[0334] 5.2*996+484RU (200MHz transmission)

[0335] This specification proposes the optimal sequence for 1 stream and all 1 to 8 streams as follows.

[0336] EHTLTF 320MHz_1x ={LTF 80MHz_lower1_1x ,23zero,LTF 80MHz_upper1_1x ,23zero,LTF 80MHz_lower2_1x ,23zero,LTF 80MHz_upper2_1x}

[0337] LTF 80MHz_lower1_1x ={S(1)*LTF 80MHz_left_1x ,0,S(2)*LTF 80MHz_right_1x}

[0338] LTF 80MHz_upper1_1x ={S(3)*LTF 80MHz_left_1x ,0,S(4)*LTF 80MHz_right_1x}

[0339] LTF 80MHz_lower2_1x ={S(5)*LTF 80MHz_left_1x ,0,S(6)*LTF 80MHz_right_1x}

[0340] LTF 80MHz_upper2_1x ={S(7)*LTF 80MHz_left_1x ,0,S(8)*LTF 80MHz_right_1x}

[0341] 23 zeros means a sequence of 23 consecutive zeros. 80MHz_left_1x , LTF 80MHz_right_1x Same as above definition.

[0342] In this case, the values ​​S(1) to S(8) are obtained by converting the index values ​​proposed below into an 8-bit binary sequence, and then mapping "1" to "-1" and mapping "0" to "1". Alternatively, "1" may be mapped to "1" and "0" may be mapped to "-1". For example, the index 30 may be converted into "00011110" in 8-bit binary form, and may be mapped to a sequence S(1) to S(8) of "1 1 1-1 -1 -1 -1 1".

[0343] [Table 8]

[0344]

[0345]

[0346] For example, index 15 can be converted to "00001111" in 8-bit binary form. Therefore, S(1)=1, S(2)=1, S(3)=1, S(4)=1, S(5)=-1, S(6)=-1, S(7)=-1, S(8)=-1. Therefore, the sequence can be configured as follows.

[0347] EHTLTF 320MHz_1x ={LTF 80MHz_lower1_1x ,23zero,LTF 80MHz_upper1_1x ,23zero,LTF 80MHz_lower2_1x ,23zero,LTF 80MHz_upper2_1x}

[0348] LTF 80MHz_lower1_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x}

[0349] LTF 80MHz_upper1_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x}

[0350] LTF 80MHz_lower2_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}

[0351] LTF 80MHz_upper2_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}

[0352] 11be requires a longer LTF sequence than the traditional sequence to support 320MHz. Therefore, hereinafter, in another embodiment of the present specification, when designing a sequence supporting a 320MHz bandwidth, a sequence with a low peak-to-average power ratio (PAPR) is proposed. In addition, a method for reducing HW complexity by reusing the sequence defined in the traditional 11ax as much as possible is proposed.

[0353] A previously defined sequence transmitted at 80 MHz can be reused to generate a sequence for 320 MHz. That is, when a 320 MHz sequence is generated by reusing the HE-LTF for 11ax, it can be generated by reusing the HE-LTF sequence stored for 11ax, or the module for generating the HE-LTF sequence can be reused as much as possible without having to use the 320 MHz sequence by storing the sequence in a memory and then loading the sequence. Therefore, HW complexity can be reduced, and the EHT-LTF for 320 MHz can be defined in a standard manner without additional burden.

[0354] When LTF is newly configured, the data PAPR as the standard of PAPR is as follows Fig. 20 As shown in Table 9. That is, when configuring EHT-LTF, it is recommended to configure by considering data PAPR to show a sequence with lower PAPR.

[0355] Fig. 20 The cumulative distribution function (CDF) of the data PAPR is shown.

[0356] Table 9 shows the median PAPR of the data.

[0357] [Table 9]

[0358] RU Type Data (BPSK) Data (QAM) 80MHz 8.77dB 9.16dB 160MHz 9.18dB 9.54dB 320MHz 9.53dB 9.86dB

[0359] The 11be standard includes not only a transmission method using the entire frequency band, but also a transmission method in which some frequency bands are punctured. Therefore, when configuring the 320MHz EHT-LTF, not only the PAPR of the entire frequency band should be considered, but also the PAPR of the case where only some frequency bands are used. The example of this specification proposes a method of configuring EHT-LTF by considering both the PAPR of the entire frequency band and the PAPR of some frequency bands. Although OFDMA and non-OFDMA transmissions are distinguished by SFD, this specification does not distinguish them, but describes the transmission band in TX by including these two cases.

[0360] The method of configuring 320 MHz EHT-LTF based on the existing 80 MHz HE-LTF sequence is as follows.

[0361] 1.1x EHT-LTF

[0362] ={120,S 1x (1)*LTF 80MHz_left_1x ,0,S 1x (2)*LTF 80MHz_right_1x ,23zero,S 1x (3)*LTF 80MHz_left_1x ,0,S 1x (4)*LTF 80MHz_right_1x ,23zero,S 1x (5)*LTF 80MHz_left_1x ,0,S 1x (6)*LTF 80MHz_right_1x ,23zero,S 1x (7)*LTF 80MHz_left_1x ,0,S 1x (8)*LTF 80MHz_right_1x ,11zero}. In this paper, X0 means the quantity is X "0", S 1x Means a length 8 sequence consisting of +1 or -1.

[0363] 2.2x EHT-LTF

[0364] ={23zero,LTF 160MHz_left_2x ,23zero,LTF 160MHz_right_2x ,11zero}

[0365] In this article,

[0366] LTF 160MHz_left_2x ={S 2x (1)*LTF 80MHz_part1_2x ,S 2x (2)*LTF 80MHz_part2_2x ,S 2x (3)*LTF 80MHz_part3_2x ,S 2x (4)*LTF 80MHz_part4_2x ,S 2x (5)*LTF 80MHz_part5_2x ,23zero,S 2x (6)*LTF 80MHz_part1_2x ,S 2x (7)*LTF 80MHz_part2_2x ,S 2x (8)*LTF 80MHz_part3_2x ,S 2x (9)*LTF 80MHz_part4_2x ,S 2x (10)*LTF 80MHz_part5_2x},

[0367] LTF 160MHz_right2x ={S 2x (11)*LTF 80MHz_part1_2x ,S 2x (12)*LTF 80MHz_part2_2x ,S 2x (13)*LTF 80MHz_part3_2x ,S 2x (14)*LTF 80MHz_part4_2x ,S 2x (15)*LTF 80MHz_part5_2x ,23zero,S 2x (16)*LTF 80MHz_part1_2x ,S 2x (17)*LTF 80MHz_part2_2x ,S 2x (18)*LTF 80MHz_part3_2x ,S 2x (19)*LTF 80MHz_part4_2x ,S 2x (20)*LTF 80MHz_part5_2x}. X0 means the quantity is "0" of X, S 2x Means a length 8 sequence consisting of +1 or -1.

[0368] 3.4x EHT-LTF

[0369] ={23zero,S 4x (1)*LTF 80MHz_left_4x ,0,S 4x (2)*LTF 80MHz_right_4x ,23zero,S 4x (3)*LTF 80MHz_left_4x ,0,S 4x (4)*LTF 80MHz_right_4x ,23zero,S 4x (5)*LTF 80MHz_left_4x ,0,S 4x (6)*LTF 80MHz_right_4x ,23zero,S 4x (7)*LTF 80MHz_left_4x ,0,S 4x (8)*LTF 80MHz_right_4x ,11zero}. In this paper, X0 means the quantity is X's "0", S 4x Means a length 8 sequence consisting of +1 or -1.

[0370] Determine the sequence S expressed by the above formula 1x , S 2x and S 4x The method is as follows.

[0371] <Sequence showing the best PAPR in full-band transmission>

[0372] First, the configuration of 1x EHT-LTF is described. The sequence with the best PAPR when the entire frequency band is used is S 1x =[1-1 1 1 -1 1 1 1] or S 1x =[-1 1 -1 -1 1 -1 -1 -1]. In this case, the PAPR is 5.076 dB. In addition, in the case of partial band transmission, the respective PAPRs are as follows.

[0373] [Table 10]

[0374]

[0375] That is, the proposed 1x EHT-LTF sequence is as follows.

[0376] <Formula 12>

[0377] 1x EHT-LTF = {12 zeros, LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,-LTF80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,11zero}, or

[0378] 1x EHT-LTF = {12 zero, -LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,11zero}

[0379] When the entire frequency band is used for 2x EHT-LTF, the sequence with the best PAPR is as follows, and the PAPR based thereon is shown in Table 11 below.

[0380] S 2x =[1 1 1 1 1 1 1 1 -1 -1 -1 -1 -1 -1 -1 1 -1 -1] or S 2x =[-1 -1-1 -1 -1 -1 -1 1 1 1 1 1 1 1 -1 -1 1 1 1]

[0381] [Table 11]

[0382]

[0383] For example, the above sequence is expressed by the following formula.

[0384] <Formula 13>

[0385] 2x EHT-LTF = {23 zero, LTF 160MHz_left_2x ,23zero,LTF 160MHz_right_2x ,110}

[0386] In this article,

[0387] LTF 160MHz_left_2x ={LTF 80MHz_part1 2x , LTF 80MHz_part2_2x , LTF 80MHz_pmart3_2x , LTF 80MHz_part4_2x , LTF 80MHz_mart5_2x ,230,LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x}

[0388] LTF 160MHz_right2x ={-LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , -LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x ,230,LTF 80MHz_part1_2x , LTF 80MHz_part2_2x , -LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x}

[0389] Alternatively,

[0390] LTF 160MHz_left_2x ={-LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , -LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x ,23 zero,-LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , L-TF 80MHz_part3_2x , LTF 80MHz_part4_2x , LTF 80MHz_part5_2x}

[0391] LTF 160MHz_right2x ={LTF 80MHz_part1_2x , LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_part4_2x , LTF 80MHzm_art5_2x ,23 zero,-LTF 80MHz_palt1_2x , -LTF 80MHz_part2 2x , LTF 80MHz_mart3_2x , LTF 80MHz_part4_2x , LTF 80MHz_part5_2x}

[0392] When the entire frequency band is used for 4x EHT-LTF, the sequence with the best PAPR is as follows, and the PAPR based thereon is shown in Table 12 below.

[0393] S 4x =[1 1 1 1 1 -1 -1 1] or S 4x =[-1 -1 -1 -1 -1 1 1 -1]

[0394] [Table 12]

[0395]

[0396] For example, the above sequence is expressed by the following formula.

[0397] <Formula 14>

[0398] 4x EHT-LTF = {12 zeros, LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,230,LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,230,LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x , 11 zero}, or,

[0399] 4x EHT-LTF = {12 zeros, -LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23 zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,230,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,110}

[0400] As shown in the above results, when some frequency bands are used, a sequence considering the entire frequency band may show a high PAPR. Specifically, the case of considering a large RU combination for each puncture may cause problems because its PAPR may be higher than the PAPR of the data. In addition to the large RU combination included in the current SFD document, the future 11be standard can be extended to include more combinations. Therefore, it is preferred to consider this when designing EHT-LTF. Therefore, this specification also proposes a sequence with low PAPR for the case where not only the entire frequency band is used but also some frequency bands are used.

[0401] <Sequence showing the best PAPR in partial-band transmission>

[0402] In the case of 1x EHT-LTF, the best PAPR in the large RU combination of "SFD280MHz" and "SFD240MHz" is 8.01dB and 7.68dB, respectively. In this case, the sequence and the PAPR based on each frequency band are shown in Tables 13 and 14.

[0403] [Table 13]

[0404]

[0405] For example, the first sequence in Table 13 is expressed by the following formula (other sequences can also be expressed in the same manner).

[0406] <Formula 15>

[0407] 1x EHT-LTF = {12 zeros, LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,230,LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,230,LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23 zero,-LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,110}

[0408] Alternatively,

[0409] 1x EHT-LTF = {12 zeros, -LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23 zero,-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23 zero,-LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,230,LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,110}

[0410] [Table 14]

[0411]

[0412] For example, the first sequence in Table 14 is expressed by the following formula (other sequences can also be expressed in the same manner).

[0413] <Formula 16>

[0414] 1x EHT-LTF = {12 zeros, LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,11zero}, or,

[0415] 1x EHT-LTF = {12 zero, -LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x,11zero}

[0416] In the case of 2x EHT-LTF, the best PAPR in the large RU combination of "SFD280MHz" and "SFD240MHz" is 8.62dB and xxxdB, respectively. In this case, the sequence and the PAPR based on each frequency band are shown in Table 15 and Table 16.

[0417] [Table 15]

[0418]

[0419] For example, the first sequence in Table 15 is expressed by the following formula (other sequences can also be expressed in the same manner).

[0420] <Formula 17>

[0421] 2x EHT-LTF = {23 zero, LTF 160MHz_left_2x ,23zero,LTF 160MHz_right_2x ,11zero}

[0422] In this article,

[0423] LTF 160MHz_left_2x ={LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x ,23zero,LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x}

[0424] LTF 160MHz_right2x ={-LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x ,23zero,LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x}

[0425] Alternatively,

[0426] LTF 160MHz_left_2x ={-LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x, -LTF 80MHz_part5_2x , 23 zero, -LTF 80MHz_part1_2x , LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x}

[0427] LTF 160MHz_right2x ={LTF 80MHz_part1_2x , LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x , 23 zero, -LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_part4_2x , LTF 80MHz_part5_2x}

[0428] [Table 16]

[0429]

[0430] For example, the sequence in Table 16 is expressed by the following formula.

[0431] <Formula 18>

[0432] 2x EHT - LTF={23 zero, LTF 160MHz_left_2x , 23 zero, LTF 160MHz_right_2x , 11 zero}

[0433] In this article,

[0434] LTF 160MHz_left_2x ={LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x , 23 zero, -LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , -LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , -LTF 80MHz_part5_2x}

[0435] LTF 160MHz_right2x ={-LTF 80MHz_part1_2x , LTF 80MHz_part2_2x , -LTF 80MHz_part3_2x , -LTF 80MHz_part4_2x , LTF 80MHz_part5_2x , 23 zero, -LTF 80MHz_part1_2x , -LTF 80MHz_part2_2x , -LTF 80MHz_part3_2x,-LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x}

[0436] Alternatively,

[0437] LTF 160MHz_left_2x ={-LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x ,23zero,LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x}

[0438] LTF 160MHz_right2x ={LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x ,23zero,LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x}

[0439] In the case of 4x EHT-LTF, the best PAPR in the large RU combination of "SFD280MHz" is 9.17dB and 8.77dB, respectively. In this case, the sequence and the PAPR based on each frequency band are shown in Tables 17 and 18.

[0440] [Table 17]

[0441]

[0442] For example, the sequences in Table 17 are expressed by the following formula.

[0443] <Formula 19>

[0444] 4x EHT-LTF = {12 zeros, LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,11zero}, or,

[0445] 4x EHT-LTF = {12 zeros, -LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,11zero}

[0446] [Table 18]

[0447]

[0448] For example, the sequences in Table 18 are expressed by the following formula.

[0449] <Formula 20>

[0450] 4x EHT-LTF = {12 zeros, LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,11zero}, or,

[0451] 4x EHT-LTF = {12 zeros, -LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,11zero}

[0452] As described above, an EHT-LTF sequence showing low PAPR may exist differently depending on the transmission band. A sequence showing low PAPR in some bands may show high PAPR in some other bands. Therefore, in this case, there is a method of applying different EHT-LTF sequences according to each band. Therefore, for each case, an EHT-LTF with maximum performance can be designed. For example, for 1x EHT-LTF, when the transmission band is the entire 320 MHz, Equation 12 can be used, when the transmission band is 280 MHz in the large RU combination included in the SFD, Equation 15 can be used, and when the transmission band is 240 MHz in the large RU combination included in the SFD, Equation 16 can be used. 2 / 4x EHT-LTF can also be used in the same manner. However, since different EHT-LTFs should be applied according to the transmission band, there is a disadvantage of increased complexity.

[0453] <Sequences showing reasonable PAPR in full or partial band transmission>

[0454] There is a method of selecting a sequence that shows a consistently low PAPR in all transmission bands so as to configure a single sequence for each 1 / 2 / 4xEHT LTF. In this case, the configuration may be as follows.

[0455] In the case of 1x EHT-LTF, the PAPR based on each sequence and each frequency band is as shown in Table 19.

[0456] [Table 19]

[0457]

[0458]

[0459] For example, the sequence of row 7 in Table 19 is expressed by the following formula (other sequences can also be expressed in the same way).

[0460] <Formula 21>

[0461] 1x EHT-LTF = {12 zeros, LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,11zero}, or,

[0462] 1x EHT-LTF = {12 zero, -LTF 80MHz_left_1x ,0,LTF80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,23zero,LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x ,11zero}

[0463] In the case of 2x EHT-LTF, the PAPR based on each sequence and each frequency band is as shown in Table 20.

[0464] [Table 20]

[0465]

[0466] For example, the sequence in row 3 in Table 20 is expressed by the following formula (other sequences can also be expressed in the same way).

[0467] <Formula 22>

[0468] 2x EHT-LTF = {23 zero, LTF 160MHz_left_2x ,23zero,LTF 160MHz_right_2x ,11zero}

[0469] In this article,

[0470] LTF 160MHz_left_2x ={LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x ,23zero,LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x}

[0471] LTF 160MHz_right2x ={LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x ,23zero,-LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x}

[0472] Alternatively,

[0473] LTF 160MHz_left_2x={-LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x ,23zero,-LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x}

[0474] LTF 160MHz_right2x ={-LTF 80MHz_part1_2x ,-LTF 80MHz_part2_2x ,LTF 80MHz_part3_2x ,LTF 80MHz_part4_2x ,LTF 80MHz_part5_2x ,23zero,LTF 80MHz_part1_2x ,LTF 80MHz_part2_2x ,-LTF 80MHz_part3_2x ,-LTF 80MHz_part4_2x ,-LTF 80MHz_part5_2x}

[0475] In the case of 4x EHT-LTF, the PAPR based on each sequence and each frequency band is as shown in Table 21.

[0476] [Table 21]

[0477]

[0478] For example, the sequence in row 3 in Table 21 is expressed by the following formula (other sequences can also be expressed in the same way).

[0479] <Formula 23>

[0480] 4x EHT-LTF = {12 zeros, LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,11zero}, or,

[0481] 4x EHT-LTF = {12 zeros, -LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x ,23zero,-LTF 80MHz_left_4x ,0,-LTF 80MHz_right_4x,23zero,-LTF 80MHz_left_4x ,0,LTF 80MHz_right_4x ,11zero}

[0482] In this case, 1 / 2 / 4x EHT-LTF shows consistently low PAPR (mostly below the median data PAPR) at all BW, SFD 280MHz, and SFD 240MHz. In addition, even when SFD is extended to all 280MHz and all 240MHz, no PAPR value exceeding 12dB is shown (12dB is an acceptable value for all data PAPR), and sequences with values ​​less than or equal to 10dB to 11dB can be selected.

[0483] The 1x HE-LTF sequence used in 320MHz proposed in the example of this specification is as follows. This may be the optimal sequence considering not only the entire 320MHz band but also the above-mentioned individual RUs, aggregated RUs, and puncturing cases.

[0484] 1x EHT-LTF = {12 zero, S (1) * LTF 80MHz_left_1x ,0,S(2)*LTF 80MHz_right_1x ,23zero,S(3)*LTF 80MHz_left_1x ,0,S(4)*LTF 80MHz_right_1x ,23zero,S(5)LTF 80MHz_left_1x ,0,S(6)*LTF 80MHz_right_1x ,23zero,S(7)LTF 80MHz_left_1x ,0,S(8)*LTF 80MHz_right_1x ,11zero}

[0485] S(1) to S(8) proposed in this article can be shown in Table 22. The maximum PAPR of the proposed sequence is also expressed together. This shows the worst PAPR in the case of stream 1 for all large RUs. The maximum PAPR does not exceed 8dB.

[0486] [Table 22]

[0487]

[0488] Another example of this specification proposes an EHT-LTF sequence for 320MHz BW. However, the optimal EHT-LTF sequence is found by considering not only all RUs and preamble puncturing constituting 320MHz, but also all RUs and puncturing constituting 240MHz. This is to use the LTF sequence of 320MHz in 230MHz as well.

[0489] The examples of the present specification can also be applied not only to the existing tone plans but also to the new tone plans newly proposed as described above.

[0490] Disclosure 1.

[0491] First, the 1 / 2 / 4x EHT-LTF sequences based on the HE-LTF sequences are as follows.

[0492] EHTLTF 320MHz_1x ={LTF 80MHz_lower1_1x , 23 zeros, LTF 80MHz_upper1_1x , 23 zeros, LTF 80MHz_lower2_1x , 23 zeros, LTF 80MHz_upper2_1x}

[0493] In this article,

[0494] LTF 80MHz_lower1_1x ={S(1)*LTF 80MHz_left_1x , 0, S(2)*LTF 80MHz_right_1x}

[0495] LTF 80MHz_upper1_1x ={S(3)*LTF 80MHz_left_1x , 0, S(4)*LTF 80MHz_right_1x}

[0496] LTF 80MHz_lower2_1x ={S(5)*LTF 80MHz_left_1x , 0, S(6)*LTF 80MHz_right_1x}

[0497] LTF 80MHz_upper2_1x ={S(7)*LTF 80MHz_left_1x , 0, S(8)*LTF 80MHz_right_1x}

[0498] EHTLTF 320MHz_2x ={LTF 80MHz_lower1_2x , 23 zeros, LTF 80MHz_upper1_2x , 23 zeros, LTF 80MHz_lower2_2x , 23 zeros, LTF 80MHz_upper2_2x}

[0499] In this article,

[0500] LTF 80MHz_lower1_2x ={T(1)*LTF 80MHz_part1_2x , T(2)*LTF 80MHz_part2_2x , T(3)*LTF 80MHz_part3_2x , T(4)*LTF 80MHz_part4_2x , T(5)*LTF 80MHz_part5_2x}

[0501] LTF 80MHz_upper1_2x ={T(6)*LTF 80MHz_part1_2x , T(7)*LTF 80MHz_part2_2x,T(8)*LTF 80MHz_part3_2x ,T(9)*LTF 80MHz_part4_2x ,T(10)*LTF 80MHz_part5_2x},

[0502] LTF 80MHz_lower2_2x ={T(11)*LTF 80MHz_part1_2x ,T(12)*LTF 80MHz_part2_2x ,T(13)*LTF 80MHz_part3_2x ,T(14)*LTF 80MHz_part4_2x ,T(15)*LTF 80MHz_part5_2x},

[0503] LTF 80MHz_upper2_2x ={T(16)*LTF 80MHz_part1_2x ,T(17)*LTF 80MHz_part2_2x ,T(18)*LTF 80MHz_part3_2x ,T(19)*LTF 80MHz_part4_2x ,T(20)*LTF 80MHz_part5_2x}。

[0504] EHTLTF 320MHz_4x ={LTF 80MHz_lower1_4x ,23 zero,LTF 80MHz_upper1_4x ,23 zero,LTF 80MHz_lower2_4x ,23 zero,LTF 80MHz_upper2_4x}

[0505] In this article,

[0506] LTF 80MHz_lower1_4x ={U(1)*LTF 80MHz_left_4x ,0,U(2)*LTF 80MHz_right_4x},

[0507] LTF 80MHz_upper1_4x ={U(3)*LTF 80MHz_left_4x ,0,U(4)*LTF 80MHz_right_4x},

[0508] LTF 80MHz_lower2_4x ={U(5)*LTF 80MHz_left_4x ,0,U(6)*LTF 80MHz_right_4x},

[0509] LTF 80MHz_upper2_4x ={U(7)*LTF 80MHz_left_4x ,0,U(8)*LTF 80MHz_right_4x}。

[0510] In this article, LTF 80MHz_left_1x ,LTF 80MHz_right_1x ,LTF 80MHz_part1_2x ,LTF80MHz_part2_2x , LTF 80MHz_part3_2x , LTF 80MHz_part4_2x , LTF 80MHz_part5_2x , LTF 80MHz_left_4x , LTF 80MHz_right_4x As defined above.

[0511] In the case of 320MHz, the RU size to be considered may be as follows (since the small (M)RU has the same PAPR performance, the description of this case will be omitted).

[0512] In each continuous 160MHz, RU size = 242 / 484 / 996 / 2*996 / 4*996 / 3*996 / 3*996+484 / 484+996

[0513] Herein, it is assumed that this sequence can also be used as a 240 MHz LTF sequence and may include the following (M)RUs.

[0514] (1) 2*996RU (when allocated in 320MHz with continuous 160MHz including two 80MHz bands)

[0515] (2) 996+484RU (996+484 included when allocated in 320MHz with contiguous 160MHz including two 80MHz bands)

[0516] (3)2*996+484RU

[0517] When all these (M)RUs are considered, the values ​​of the sequence used to minimize the worst PAPR are shown in Tables 23 to 25.

[0518] [Table 23]

[0519]

[0520] [Table 24]

[0521]

[0522] [Table 25]

[0523]

[0524] Public 2.

[0525] 2 / 4x LTF can be configured using the following LTF sequence.

[0526] EHTLTF 320MHz_2x ={LTF 160MHz_left_2x ,23zero,LTF 160MHz_right_2x}

[0527] In this article,

[0528] LTF 160MHz_left_2x ={T(1)*LTF 160MHz_part1_2x , 0, T(2)*LTF 160MHz_part2_2x , 23 zero, T(3)*LTF 160MHz_part3_2x , 0, T(4)*LTF 160MHz_part4_2x}

[0529] LTF 160MHz_right_2x ={T(5)*LTF 160MHz_part1_2x , 0, T(6)*LTF 160MHz_part2_2x , 23 zero, T(7)*LTF 160MHz_part3_2x , 0, T(8)*LTF 160MHz_part4_2x}

[0530] LTF 160MHz_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,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-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},

[0531] LTF 160MHz_part2_2x＝{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},

[0532] LTF 160MHz_part3_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,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+1,0,-1,0,+1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,+1,0,+1,0,-1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,-1,0,-1,0,-1,0,-1,0,+1,0,-1,0,+1,0,-1,0,-1,0,+1,0,+1,0,-1,0,+1,0,+1,0,+1,0,+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},

[0533] LTF 160MHz_part4_2x＝{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},

[0534] EHTLTF 320MHz_4x ={LTF 160MHz_left_4x ,23 zero,LTF 160MHz_right_4x}

[0535] In this article,

[0536] LTF 160MHz_left_4x ={U(1)*LTF 160MHz_part1_4x ,0,U(2)*LTF 160MHz_part2_4x ,23 zero,U(3)*LTF 160MHz_part3_4x ,0,T(4)*LTF 160MHz_part4_2x}

[0537] LTF 160MHz_right_4x ={U(5)*LTF 160MHz_part1_4x ,0,U(6)*LTF 160MHz_part2_4x ,23 zero,U(7)*LTF 160MHz_part3_4x ,0,U(8)*LTF 160MHz_part4_4x}

[0538] LTF 160MHz_part1_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,+1,-1,-1,+1,-1,+1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,+1,-1,-1,+1,+1,+1,-1,+1,-1,-1,+1,-1,-1,+1,-1,+1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,-1,-1,+1,-1,+1,-1,+1,+1,-1,+1,-1,+1,-1,+1,+1,+1,-1,+1,+1,+1,-1,-1,+1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,-1,+1,-1,+1,+1,-1,-1,+1,-1,-1,-1,+1,+1,-1,+1,+1,+1,+1,-1,-1,-1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1,+1,+1,-1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-1,+1,-1,-1,+1,+1,-1,+1,-1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,-1,+1,+1,-1,-1,-1,+1,-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},

[0539] LTF 160MHz_part2_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},

[0540] LTF 160MHz_part3_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,-1,-1,+1,-1,-1,-1,-1,+1,-1,+1,-1,+1,+1,+1,-1,+1,+1,+1,-1,-1,+1,-1,-1,-1,-1,-1,+1,+1,-1,-1,-1,-1,+1,+1,-1,-1,-1,+1,+1,-1,-1,-1,+1,-1,+1,-1,-1,-1,-1,-1,-1,-1,+1,+1,-1,+1,+1,-1,+1,+1,+1,+1,-1,+1,-1,+1,+1,+1,+1,-1,+1,-1,-1,+1,+1,-1,+1,+1,+1,+1,-1,-1,+1,-1,-1,-1,+1,-1,+1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,+1,-1,+1,+1,+1,+1,+1,-1,-1,+1,+1,+1,+1,-1,-1,-1,-1,+1,-1,+1,-1,-1,-1,-1,+1,-1,+1,+1,-1,-1,+1,-1,-1,-1,-1,+1,+1,-1,+1,+1,+1,+1,-1,+1,-1,+1,-1,-1,-1,+1,-1,-1,-1,+1,+1,-1,+1,+1,+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},

[0541] LTF 160MHz_part4_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},

[0542] In this case, the values ​​T and U based on each LTF sequence are as shown in Table 26 and Table 27.

[0543] [Table 26]

[0544]

[0545] [Table 27]

[0546]

[0547]

[0548] Figure 21 to Figure 23 is a graph showing the PAPR in each indicated RU of 1 / 2 / 4xLTF sequences.

[0549] "Original" or "New" indicates an LTF sequence obtained by applying different values ​​of S, T, and U to the sequence of Publication 1, and "Nested" indicates the LTF sequence of Publication 1. "Other sequences" indicates the LTF sequence proposed in Publication 2. The gray line indicates the median PAPR of data transmitted in BPSK.

[0550] Fig.24 An embodiment of a transmitting STA operation method is shown.

[0551] Reference Fig.24 , the sending STA can generate a PPDU (S2410).

[0552] The transmitting STA may transmit the PPDU (S2420). For example, the transmitting STA may transmit the PPDU to the receiving STA via the 320 MHz frequency band or the 160+160 MHz frequency band.

[0553] For example, the PPDU may include a long training field (LTF) signal. The LTF signal may be generated based on an LTF sequence. The LTF sequence may be defined as follows.

[0554] {LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x}LTF 80MHz_1st_1x ={LTF 80MHz_left 1x ,0,LTF 80MHz_right_1x}LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x}LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}LTF 80MHz_4th_1x ={-LTF 80MHz_left_4x ,0,-LTF 80MHz_right_1x}

[0555] 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},

[0556] 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,+1,0,0,0,0,+1},

[0557] 0 23 It can mean 23 consecutive zeros.

[0558] For example, a PPDU may be sent via 1 to 8 streams.

[0559] For example, the LTF sequence may be mapped from the lowest pitch with pitch index "-2036" to the highest pitch with pitch index "2036".

[0560] For example, the LTF sequence may be a 1xLTF sequence.

[0561] For example, the PPDU may further include a U-SIG field and an EHT-SIG field.

[0562] Fig.25 An embodiment of a receiving STA operation method is shown.

[0563] Reference Fig.25 , the receiving STA can receive the PPDU (S2510).

[0564] The receiving STA may decode the PPDU (S2520). For example, the receiving STA may receive the PPDU from the transmitting STA through the 320 MHz frequency band or the 160+160 MHz frequency band.

[0565] For example, the PPDU may include a long training field (LTF) signal. The LTF signal may be generated based on the LTF sequence.

[0566] The LTF sequence can be defined as follows.

[0567] {LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x}LTF 80MHz_1st_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_lighht_1x}LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz _ right_1x}LTF 80MHz_3rd_1x={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x }LTF 80MHz_4th_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x }

[0568] 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},

[0569] 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,+1,0,0,0,0,+1},

[0570] 0 23 It can mean 23 consecutive zeros.

[0571] For example, a PPDU may be sent through 1 to 8 streams.

[0572] For example, the LTF sequence may be mapped from the lowest pitch with pitch index "-2036" to the highest pitch with pitch index "2036".

[0573] For example, the LTF sequence may be a 1xLTF sequence.

[0574] For example, the PPDU may further include a U-SIG field and an EHT-SIG field.

[0575] Fig.24 and Fig.25 Some of the detailed steps shown in the examples may not be necessary and can be omitted. Fig.24 and Fig.25 Other steps can be added to the steps shown, and the order of the steps can be changed. Some of the above steps can have independent technical meanings.

[0576] The above technical features of this specification can be applied to various devices and methods. For example, the above technical features of this specification can be applied to various devices and methods. Figure 1 and / or Fig.19 For example, the above technical features of this specification can only be applied to Figure 1 and / or Fig.19 For example, the above technical features of this specification can be based on Figure 1 The processing chips 114 and 124 can be implemented, or based on Figure 1 The processors 111 and 121 and the memories 112 and 122 can be implemented, or based on Fig.19 The processor 610 and the memory 620 are implemented. For example, the device of the present specification includes a memory and a processor operatively connected to the memory. The processor is configured to generate a physical protocol data unit (PPDU) and send the PPDU to a receiving STA via a 320MHz band or a 160+160MHz band. The PPDU includes a long training field (LTF) signal. The LTF signal is generated based on the LTF sequence. The LTF sequence is defined as follows.

[0577] {LTF 80MHz_1st_1x ,0 23 ,LTF 80MHz_2nd_1x ,0 23 ,LTF 80MHz_3rd_1x ,0 23 ,LTF 80MHz_4th_1x }LTF 80MHz_1st_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x }LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x }LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x }LTF 80MHHz_4th_1x ={-LTF 80MHz_left_4x ,0,-LTF 80MHz_right_1x }

[0578] 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},

[0579] 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,+1,0,0,0,0,+1},

[0580] 0 23 It can mean 23 consecutive zeros.

[0581] The technical features of this specification can be implemented based on a computer-readable medium (CRM). For example, the CRM proposed in this specification is at least one computer-readable medium including instructions, which are executed by at least one processor of a transmitting station (STA) of a wireless local area network (WLAN) system to perform operations, including: generating a physical protocol data unit (PPDU); and sending the PPDU to a receiving STA via a 320MHz band or a 160+160MHz band. The PPDU may include a long training field (LTF) signal. The LTF signal may be generated based on an LTF sequence. The LTF sequence may be defined as follows.

[0582] {LTF 80MHz_1st_1x , 0 23 , LTF 80MHz_2nd_1x , 0 23 , LTF 80MHz_3rd_1x , 0 23 , LTF 80MHz_4th_1x}LTF 80MHz_1st_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x}LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x}LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}LTF 80MHz_4th_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x}

[0583] LTTF 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},

[0584] 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,+1,0,0,0,0,+1},

[0585] 0 23 It may mean 23 consecutive zeros. Its instructions may be stored in the CRM.

[0586] The instructions stored in the CRM of this specification can be executed by at least one processor. At least one processor associated with the CRM of this specification can be Figure 1 The processors 111 and 121 or the processing chips 114 and 124 or Fig.19 In addition, the CRM of this specification may be Figure 1 The memories 112 and 122 or Fig.19 memory 620 or a separate external memory / storage medium / disk, etc.

[0587] 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 supporting artificial intelligence (AI).

[0588] Artificial intelligence refers to the field of study regarding artificial intelligence or methods of creating artificial intelligence, while machine learning refers to the field of study regarding methods of defining and solving various problems in the field of artificial intelligence. Machine learning is also defined as algorithms that improve the performance of operations through stable experience of operations.

[0589] An artificial neural network (ANN) is a model used in machine learning and may refer to an overall problem-solving model that includes artificial neurons (nodes) that form a network by combining synapses. An artificial neural network may be defined by the connection pattern between neurons in different layers, a learning process that updates model parameters, and an activation function that generates an output value.

[0590] The 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 neurons. In the 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 a synapse.

[0591] Model parameters refer to parameters determined by learning and include weights of synaptic connections and biases of neurons. Hyperparameters refer to parameters set in a machine learning algorithm before learning and include learning rate, number of iterations, mini-batch size, and initialization function.

[0592] 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 learning an artificial neural network.

[0593] Machine learning can be categorized into supervised learning, unsupervised learning, and reinforcement learning.

[0594] Supervised learning refers to a method of 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 to the artificial neural network. Unsupervised learning may refer to a method of training an artificial neural network when no labels are given for training data. Reinforcement learning may refer to a training method of an agent defined in a training environment to select actions or action sequences to maximize the cumulative reward in each state.

[0595] 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.

[0596] The above technical features can be applied to wireless communication of robots.

[0597] A robot may 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 may be referred to as an intelligent robot.

[0598] Robots can be classified into industrial, medical, household, military robots, etc. according to their uses or fields. Robots can include actuators or drives, which include motors to perform various physical operations (e.g., move 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 through the drive.

[0599] The above technical features can be applied to devices that support extended reality.

[0600] Extended reality refers collectively to virtual reality (VR), augmented reality (AR), and mixed reality (MR). VR technology is a computer graphics technology that provides real-world objects and backgrounds only in CG images, AR technology is a computer graphics technology that provides virtual CG images on real object images, and MR technology is a computer graphics technology that provides virtual objects mixed and combined with the real world.

[0601] 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 equal.

[0602] XR technology may be applied to head mounted displays (HMDs), heads 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.

[0603] The claims described in this specification can be combined in various ways. For example, the technical features of the method claims of this specification can be combined to be implemented as a device, and the technical features of the device claims of this specification can be combined to be implemented by a method. In addition, the technical features of the method claims of this specification and the technical features of the device claims can be combined to be implemented as a device, and the technical features of the method claims of this specification and the technical features of the device claims can be combined to be implemented by a method.

Claims

1. A method comprising the following steps: generating a physical protocol data unit PPDU, wherein the PPDU includes a legacy signal L-SIG field, a repeated L-SIG field which is a repetition of the L-SIG field, and a universal signal U-SIG field, wherein a result of applying "modulo 3" to a length value of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical PHY version identifier having a length of 3 bits and having a predetermined value, wherein the U-SIG field further includes a bandwidth field including information related to a bandwidth; and The PPDU is sent via a 320 MHz frequency band, Wherein, the PPDU includes a long training field LTF signal, Wherein, the LTF signal is generated based on the LTF sequence, and Wherein, the LTF sequence is defined as follows: {LTF 80MHz_1st_1x ,0 23 ,LTF 80MHz_2nd_1x ,0 23 ,LTF 80MHz_3rd_1x ,0 23 ,LTF 80MHz_4th_1x } LTF 80MHz_1st_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_riggt_1x } LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x } LTF 80MHz_4th_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x } 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}， 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}， Among them, 0 23 Represents 23 consecutive zeros.

2. The method according to claim 1, wherein: The PPDU is transmitted through 1 to 8 streams.

3. The method according to claim 1, wherein: The LTF sequence is mapped from the lowest pitch with pitch index -2036 to the highest pitch with pitch index 2036.

4. The method according to claim 1, wherein: The LTF sequence is a 1xLTF sequence.

5. The method according to claim 1, wherein: The PPDU also includes an Extremely High Throughput Signal (EHT-SIG) field.

6. A station STA, the STA comprising: a transceiver that sends and receives radio signals; as well as a processor coupled to the transceiver, wherein the processor is configured to: generating a physical protocol data unit PPDU, wherein the PPDU includes a legacy signal L-SIG field, a repeated L-SIG field that is a repetition of the L-SIG field, and a universal signal U-SIG field, wherein a result of applying "modulo 3" to a length value of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical PHY version identifier having a length of 3 bits and having a predetermined value, wherein the U-SIG field further includes a bandwidth field including information related to a bandwidth; and The PPDU is sent via a 320 MHz frequency band, Wherein, the PPDU includes a long training field LTF signal, Wherein, the LTF signal is generated based on the LTF sequence, and Wherein, the LTF sequence is defined as follows: {LTF 80MHz_1st_1x ,0 23 ,LTF 80MHz_2nd_1x ,0 23 ,LTF 80MHz_3rd_1x ,0 23 ,LTF 80MHz_4th_1x }LTF 80MHz_1st_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x } LTF 80MHz_4th_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_riggt_1x } 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}， 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}， Among them, 0 23 Represents 23 consecutive zeros.

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

8. A method comprising the following steps: receiving a physical protocol data unit PPDU through a 320 MHz frequency band, wherein the PPDU includes a legacy signal L-SIG field, a repeated L-SIG field that is a repetition of the L-SIG field, and a universal signal U-SIG field, wherein a result of applying "modulo 3" to a length value of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical PHY version identifier having a length of 3 bits and having a predetermined value, wherein the U-SIG field further includes a bandwidth field including information related to a bandwidth; and decoding the PPDU, Wherein, the PPDU includes a long training field LTF signal, Wherein, the LTF signal is generated based on the LTF sequence, and Wherein, the LTF sequence is defined as follows: {LTF 80MHz_1st_1x ,0 23 ,LTF 80MHz_2nd_1x ,0 23 ,LTF 80MHz_3rd_1x ,0 23 ,LTF 80MHz_4th_4x }LTF 80MHz_1st_1x ={LTF 80MHz_ l eft_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x } LTF 80MHz_4th_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x } 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}， 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}， Among them, 0 23 Represents 23 consecutive zeros.

9. A station STA, the STA comprising: a transceiver that sends and receives radio signals; as well as A processor coupled to the transceiver, wherein the processor is configured to: receiving a physical protocol data unit PPDU through a 320 MHz frequency band, wherein the PPDU includes a legacy signal L-SIG field, a repeated L-SIG field that is a repetition of the L-SIG field, and a universal signal U-SIG field, wherein a result of applying "modulo 3" to a length value of the L-SIG is set to zero (0), wherein the U-SIG field includes a physical PHY version identifier having a length of 3 bits and having a predetermined value, wherein the U-SIG field further includes a bandwidth field including information related to a bandwidth; and decoding the PPDU, Wherein, the PPDU includes a long training field LTF signal, Wherein, the LTF signal is generated based on the LTF sequence, and Wherein, the LTF sequence is defined as follows: {LTF 80MHz_1st_1x ,0 23 ,LTF 80MHz_2nd_1x ,0 23 ,LTF 80MHz_3rd_1x ,0 23 ,LTF 80MHz_4th_1x } LTF 80MHz_1st_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_2nd_1x ={LTF 80MHz_left_1x ,0,LTF 80MHz_right_1x } LTF 80MHz_3rd_1x ={-LTF 80MHz_left_1x ,0,-LTf 80MHz_right_1x } LTF 80MHz_4th_1x ={-LTF 80MHz_left_1x ,0,-LTF 80MHz_right_1x } 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}， 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}， Among them, 0 23 Represents 23 consecutive zeros.

10. The STA according to claim 9, wherein: The processor is further arranged to perform the steps of the method according to any one of claims 2 to 5.

Images