Terminal equipment, base station equipment, and communication method

Abstract

Achieve efficient communication in a wireless LAN system. 【Solution means】The method includes a step in which a terminal device receives a frame, and the frame includes f indicating the location of the primary channel P20,idx , f indicating the channel center frequency c,idx0 , includes the channel width, and when the channel width is 160 MHz, at least f P20,idx , f P80,idx , f S80,idx is used to determine the center of the NPCA primary channel, and f P80,idx is f c,idx0 -16·(N 20MHz / 8 - n p80 ), and f S80,idx is when n p80 is even, f P80,idx +16, and when n p80 is even, f P80,idx -16, N 20MHz is 8, n p80 is FLOOR(n p20 / 4), and n p20 is an integer in the range of 0 or more and N 20MHz -1 or less.

Description

Technical Field

[0001] The present invention relates to a terminal device, a base station device, and a communication method.

Background Art

[0002] The Institute of Electrical and Electronics Engineers Inc. (IEEE) is considering ways to increase the speed and frequency utilization efficiency of wireless local area network (LAN) communication. Currently, the standardization of IEEE 802.11bn has been initiated as a successor standard to IEEE 802.11be.

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention provides a terminal device, a base station device, and a communication method capable of efficient communication.

Means for Solving the Problems

[0005] (1) A first aspect of the present invention is a terminal device including a receiving unit that receives a frame, where the frame includes f indicating the location of a primary channel P80,idx , f indicating the channel center frequency c,idx0 , and Channel Width indicating the channel width. When the Channel Width is 160 MHz, at least the f P20,idx , f P80,idx , fS80,idx is used to determine the center of the NPCA primary channel, and the f P80,idx is f c,idx0 -16·(N 20MHz / 8 - n p80 ) + 8, and the f S80,idx is such that when the n p80 is even, f P80,idx +16, and when the n p80 is even, f P80,idx -16, and the N 20MHz is 8, and the n p80 is FLOOR(n p20 / 4), and the n p20 is an integer within the range of 0 or more and N 20MHz -1 or less, a terminal device.

[0006] (2) A second aspect of the present invention is a communication method of a terminal device, including a step of receiving a frame, the frame including f indicating the location of the primary channel P20,idx , f indicating the channel center frequency c,idx0 , and Channel Width indicating the channel width. When the Channel Width is 160 MHz, at least the f P20,idx , f P80,idx , f S80,idx are used to determine the center of the NPCA primary channel, and the f P80,idx is f c,idx0 -16·(N 20MHz / 8 - n p80 ) + 8, and the f S80,idx is such that when the n p80 is even, f P80,idx +16, and when the n p80 is even, f P80,idx -16, and the N 20MHz is 8, and the n p80 is FLOOR(n p20 / 4), and the n p20 is an integer within the range of 0 or more and N 20MHz -1 or less, a communication method including. [Effects of the Invention]

[0007] This enables the realization of an efficient wireless communication system. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows an example of a wireless LAN system according to one aspect of this embodiment. [Figure 2] This figure shows an example of OBSS according to one aspect of this embodiment. [Figure 3] This diagram shows an example of the configuration of STA according to one aspect of this embodiment. [Figure 4] This diagram shows an example of the configuration of an AP according to one aspect of this embodiment. [Figure 5] This figure shows an example of a MAC frame format according to one aspect of this embodiment. [Figure 6] This figure shows an example of an A-MSDU according to one aspect of this embodiment. [Figure 7] This figure shows an example of an A-MPDU according to one aspect of this embodiment. [Figure 8] This figure shows an example of Fragmentation according to one embodiment. [Figure 9] This figure shows an example of a PPDU according to one aspect of this embodiment. [Figure 10] This figure shows an example of a backoff procedure according to one aspect of this embodiment. [Figure 11] This figure shows an example of a NAV according to one aspect of this embodiment. [Figure 12] This figure shows an example of channel bonding according to one aspect of this embodiment. [Figure 13] This figure shows an example of the backoff procedure on the NPCA primary channel of the STA according to one aspect of this embodiment. [Figure 14]This figure shows an example in which, according to one aspect of this embodiment, the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width when the channel width is 80 MHz. [Figure 15] This figure shows an example in which, when the channel width according to one aspect of this embodiment is 80 MHz, the NPCA channel is located at a position shifted by the center frequency of the channel width. [Figure 16] This figure shows an example in which, according to one aspect of this embodiment, when the channel width is 80 + 80 MHz, the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width. [Figure 17] This figure shows an example in which, according to one aspect of this embodiment, when the channel width is 80 + 80 MHz, the NPCA channel is located at a position shifted by the center frequency of the channel width. [Figure 18] This figure shows an example in which, according to one aspect of this embodiment, the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width when the channel width is 160 MHz. [Figure 19] This figure shows an example in which, according to one aspect of this embodiment, the NPCA channel is located at a position shifted by the center frequency of the channel width when the channel width is 160 MHz. [Figure 20] This figure shows an example in which, according to one aspect of this embodiment, the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width when the channel width is 320 MHz. [Figure 21] This figure shows an example in which, according to one aspect of this embodiment, the NPCA channel is located at a position shifted by the center frequency of the channel width when the channel width is 320 MHz. [Figure 22] This figure shows an example of the process by which an STA according to one aspect of this embodiment determines the channel frequency. [Figure 23]This figure shows an example of the process by which an AP according to one aspect of this embodiment determines the channel frequency. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below.

[0010] "A, and / or B" may be a term that includes "A", "B", or "A and B".

[0011] The wireless LAN system in this embodiment includes an access point (AP) and a station It includes (STA). A network consisting of access points and stations is called a BSS (Basic Service Set). A wireless LAN system may consist of one or more stations. If the wireless LAN system consists of two or more STAs, the wireless LAN system may be called a BSS.

[0012] An access point (AP) may also be called a base station device. A station (STA) is It may also be called a terminal device.

[0013] Figure 1 shows an example of a wireless LAN system according to one aspect of this embodiment. The wireless LAN system comprises STA103, STA104, and AP102. It may also be called BSS.

[0014] STA may be a logical entity. This logical entity is the Medium Access Control (MAC) and physical layer interface to the Wireless Medium (WM). STA may be a logical entity that is a single addressable instance. It may also be a communication device that uses a wireless medium. Furthermore, STA may include AP (Access Point) having the function of a base station and / or non-AP STA having the function of a terminal. In other words, STA may be an AP. Also, STA may be a non-AP STA. Also, STA may refer to both AP and non-AP STA. STA may also be called a terminal device.

[0015] Wireless media use PDUs (Protocol Data Units) between peer physical layer entities of a Wireless LAN. It may be a medium used to implement the transfer. A wireless medium may be referred to as a medium. A medium may be referred to as a medium.

[0016] A channel may be an instance of a radio medium used to transmit PPDUs between two or more STAs.

[0017] An AP may include one STA and be an entity that provides access to distribution system services (DSS) via a wireless medium to associated STA(s). An AP may include an STA and a distribution system access function (DSAF). An AP may also be referred to as an STA. Good. In other words, AP can also be STA.

[0018] A non-AP STA (non-access point station) may be an STA that is not included within an AP. For example, a non-AP STA may be an HT STA. A non-AP STA may be a VHT STA. This is also acceptable. Non-AP STA may also be HE STA. Non-AP STA may also be EHT STA. A non-AP STA may also be a UHR STA. A non-AP STA is an STA other than the aforementioned STA. That is also acceptable. Non-AP STA may be referred to as STA.

[0019] Distribution system services are services provided by the distribution system (DS). It may also be a set of services. The distribution system access function is a function within the AP. The distribution system may also use MAC services and distribution system services to provide access between the distribution system and the wireless medium. The distribution system may be a system used to interconnect a set of BSSs and an integrated LAN in order to create an Extended Service Set (ESS).

[0020] The BSS may be a set of STAs that successfully synchronized using JOIN service primitives and a set of STAs using START primitive. For example, MLME-JOIN.confirm may be used as the JOIN service primitive. MLME-JOIN.confirm confirms synchronization with the BSS. It may be a primitive for doing so. MLME-JOIN.request may be used as the JOIN service primitive. MLME-JOIN.request is a primitive for requesting synchronization with BSS. This is also acceptable. For example, MLME-START.request may be used as the START primitive. Good. MLME-START.request may be a primitive for a MAC entity to request that a new BSS be started. A primitive is an internal signal in STA or AP. This is also acceptable. The internal signals referred to here may be internal signals used for information exchange between entities at different layers or different protocols, such as between an SME and an MLME, between an SME and a PLME, or between two MLMEs and a PLME.

[0021] An ESS is a set of one or more interconnected BSSs, which appear as a single BSS in the Logical Link Control (LLC) layer of an STA associated with any of these BSSs. It is also possible that an ESS (Extended Service Set) has a connection path via WM between one of the APs that are members of the ESS and a non-AP STA. The ESS may have overlapping communication areas (coverage) consisting of multiple BSSs. The distance between multiple BSSs may be Even if they are geographically separated, coverage by multiple BSSs can be considered broader coverage. It may be ranged. In other words, the communication area of ​​ESS may be the same as or wider than the communication area of ​​BSS alone. The communication area formed by ESS is called ESA (Extended Service Area). It may also be used.

[0022] An OBSS (Overlapping Basic Service Set) may be a BSS that operates on the same channel as the STA's BSS, and within (partially or entirely) its BSA (Basic Service Area).

[0023] Figure 2 shows an example of OBSS according to one aspect of this embodiment. In Figure 2, 202 203 may be AP#1. 203 may be STA#1. 204 may be STA#2. 201 may be BSS#1, which consists of 202, 203, and 204. 203 204 may be synchronized with 202. 206 may be AP#2. 207 may be STA#3. 208 may be STA#4. 205 may be BSS#2, which consists of 206, 207, and 208. 207 is 206 may be synchronized with 208. 202 may not be synchronized with 207. 202 may not be synchronized with 208. 206 may not be synchronized with 203. 206 may not be synchronized with 204. 201 and 205 may be BSS operating on the same channel. 205 may be considered an OBSS to 201. 201 may be considered an OBSS to 205. For example, 202 may receive a frame transmitted by 207. 204 may receive a frame transmitted by 207. 207 may receive a frame transmitted by 202. 207 may receive a frame transmitted by 204. For example, 202 may determine that the channel is busy while 207 is transmitting. 204 may determine that the channel is busy while 207 is transmitting. 207 may determine that the channel is busy while 202 is transmitting. 207 may determine that the channel is busy while 204 is transmitting.

[0024] A BSA may be a region that includes members of a BSS. A BSA may also include members of other BSSs. For example, in Figure 2, 201 is a BSA that includes 203, 204, and 207. This is also acceptable. Here, 207 may be another member of the BSS.

[0025] IBSS (Independent Basic Service Set) is a BSS that forms a self-contained network, and access to the DS is not available.

[0026] The addressable unit may be a station (STA). Physical and operational Characteristics may also be defined by modifiers placed before the STA term. For example, in the case of location or mobility, the addressable unit is fixed STA. ), mobile STA, and mobility STA may also be used. STA is A While the recipient can specify a dress code, it does not (generally) have to be a fixed location. STA is multiple It may have a number of different characteristics, each of which forms its function. This is also acceptable. For example, a single addressable unit may simultaneously possess the characteristics of a portable STA, a QoS STA, a dependent STA, and a hidden STA. That's fine.

[0027] The architecture provides a WLAN that transparently supports STA migration to the upper layers. It may consist of several interacting components. The BSS may be a fundamental component of the LAN. The range over which member STAs of the BSS can communicate may be considered the coverage area. The range is the set of all possible directional transmissions by member STAs. It may also be called BSA.

[0028] Physical limitations may determine the direct distance between STAs. An infrastructure BSS may be part of a network composed of multiple BSSs. The architectural component for interconnecting infrastructure BSSs may be a DS for non-General Link (non-GLK) operations. DS and Extended Service Sets (ESSs) may be mechanisms for extending connectivity for non-GLK operations. GLK operations use bridges. An extended network may be formed using these. The wireless medium and the DSM (Distribution System Medium) may be logically separated. Each logical medium has a different architecture. They may be used for different purposes by different components. Recognizing that multiple media are logically different is important for understanding the flexibility of the architecture. LAN The architecture is specified independently of the physical characteristics of a particular implementation. DS provides the logical services necessary for address-to-destination mapping and the seamless integration of multiple BSSs. This may enable support for mobile devices. The AP uses STA functionality and DSAF. It is an entity with a Distribution System Access Function (BSS) and may enable the associated STA to access the DS via wireless media. The data between the BSS and the DS is handled by the AP. It may travel via the internal DSAF. The AP may include an STA, and its STA address may be addressable on the radio medium. For the AP to communicate with the radio medium and DSM The addresses used do not necessarily have to be the same. Data sent from one of the STAs associated with the AP to the AP's STA address is always received on an uncontrolled port. It may be processed by the access entity. If the controlled port is authorized, the frame may conceptually pass through the DS.

[0029] DS and Infrastructure BSS enable wireless networks of any size and complexity. A network may be constructed. This network may be called an ESS (Extensible Services Set). Good. An ESS is a collection of infrastructure BSSs connected by the same SSID, which may also be connected by DSs. An ESS does not necessarily contain a DS. For the LLC layer, an ESS is an IBSS. It may look the same. STAs within ESS can communicate, and mobile STA(s) are (same Within the ESS, movement between BSSs may be transparent to the LLC. In the ESS, the BSS is partial It may overlap. This may be commonly used to position coverage within a physical range. In ESS, BSS may be physically separated. In ESS, logically There may be no restrictions on the distance between BSSs. In ESS, BSSs are physically located in the same place. This may be done to provide redundancy. In an ESS, one or more IBSS(s) or ESS(s) may physically reside in the same location as one or more ESS(s).

[0030] Figure 3 shows an example of the device configuration of an STA according to one embodiment of this model. The STA may have an antenna unit SU1, an RF (Radio Frequency) unit SU2, a physical layer processing unit (PHY layer processing unit) SU3, a MAC layer processing unit SU4, and an upper layer packet processing unit SU5. The STA may also have a wireless transceiver unit SU6 and a frame processing unit SU7. The wireless transceiver unit SU6 connects the antenna unit SU1 and the RF The frame processing unit SU7 may be configured to include a physical layer processing unit SU3 and a MAC layer processing unit SU4. The RF unit SU2 transmits radio signals via the antenna unit SU1. Received the number.

[0031] The signal received by the RF unit SU2 is converted into a baseband signal and sent to the physical layer processing unit SU3. The physical layer processing unit SU3 performs processing related to the physical layer function (PHY function) on the converted baseband signal. The signal that has undergone processing at the physical layer in the physical layer processing unit SU3 is sent to the MAC layer processing unit SU4. The MAC layer processing unit SU4 performs processing related to the MAC layer function (MAC function) on the baseband signal. The signal that has undergone processing at the MAC layer in the MAC layer processing unit SU4 is sent as an upper layer packet to the upper layer packet processing unit SU5. The upper layer packet processing unit SU5 performs processing related to the upper layer function on the upper layer packet extracted from the received signal.

[0032] The upper layer packet processing unit SU5, when transmitting upper layer packets, processes information related to the functions of the upper layer. Processing is performed. The upper layer packet to be transmitted is sent from the upper layer packet processing unit SU5 to the MAC layer processing unit SU4. The MAC layer processing unit SU4 performs processing on the upper layer packet related to the MAC layer function. The frame after processing at the MAC layer in the MAC layer processing unit SU4 (the upper layer packet has been processed) The generated frame is sent to the physical layer processing unit SU3. The physical layer processing unit SU3 performs processing related to the physical layer's functions on the frame that has undergone processing at the MAC layer. The frame sent from the physical layer processing unit SU3 to the RF unit SU2 is converted into an RF signal and transmitted as a wireless signal via the antenna unit SU1.

[0033] The processing of the physical layer processing unit SU3 may be controlled by a PLME (Physical Layer Management Entity), which is an entity that controls the physical layer. The processing of the MAC processing unit SU4 may be controlled by an MLME (MAC Layer Management Entity), which is an entity that controls the MAC layer. PLME and MLME provide their respective layer management service interfaces. Furthermore, PLME and MLME may be controlled by an SME (Station Management Entity), which is an entity independent of the layer. PLME, MLME, and SME may be included in the frame processing unit SU7.

[0034] Figure 4 shows an example of the device configuration of an AP according to one aspect of this embodiment. The AP may include an antenna unit AU1, an RF unit AU2, a physical layer processing unit AU3, a MAC layer processing unit AU4, and a DSAF unit AU5. The DSAF unit AU5 may also have a higher layer packet processing function. Furthermore, the AP is capable of wireless transmission and reception. The unit may have a section AU6 and a frame processing section AU7. The wireless transceiver section AU6 may be configured to include an antenna section AU1 and an RF section AU2. The frame processing section AU7 may be configured to include a physical layer processing section AU3 and a MAC layer processing section AU4.

[0035] The signal received by the RF unit AU2 is converted into a baseband signal and sent to the physical layer processing unit AU3. The physical layer processing unit AU3 processes the converted baseband signal to determine the function of the physical layer. Processing is performed. The signal that has undergone processing in the physical layer processing unit AU3 is sent to the MAC layer processing unit AU4. The MAC layer processing unit AU4 processes the baseband signal, performing operations related to the MAC layer's functions. The MAC layer processing in MAC layer processing unit AU4 is sent to DSAF unit AU5 as a higher layer packet. DSAF unit AU5 then processes the higher layer packet extracted from the received signal. It performs processing related to the functions of the higher layer. In addition, the DSAF unit AU5 provides higher layer packets to the DS. That's good too.

[0036] The DSAF unit AU5 may acquire upper-layer packets from the DS. When transmitting upper-layer packets, the DSAF unit AU5 performs processing related to the functions of the upper layer. The packet is sent to the MAC layer processing unit AU4. The MAC layer processing unit AU4 performs processing related to the MAC layer's functions on the upper layer packet. The frame that has undergone MAC layer processing in the MAC layer processing unit AU4 (a frame generated by processing the upper layer packet) is sent to the physical layer processing unit AU3. The physical layer processing unit AU3 performs processing related to the physical layer's functions on the frame that has undergone processing at the MAC layer. The frame sent from the physical layer processing unit AU3 to the RF unit AU2 is converted into an RF signal and transmitted as a wireless signal via the antenna unit AU1.

[0037] The processing of the physical layer processing unit AU3 may be controlled by PLME. The processing of the MAC processing unit AU4 may be controlled by MLME. Furthermore, PLME and MLME are independent of the layer. It may be controlled by the SME, which is a type. PLME, MLME, and SME are connected to the frame processing unit AU7. It may be included.

[0038] HT STA (High-Throughput STA) is measured at MAC Data Services Access Points (SAPs). It may provide PHY and MAC capabilities capable of supporting a specified throughput of 100 Mb / s or more. The HT STA may also be a QoS STA. The HT feature may be used in an HT STA associated with an HT AP (High-Throughput AP). A subset of the HT feature may be the same IBSS. It may be used between two HT STAs that are members of the same group. Some PHY features that distinguish HT STA from non-HT STA include multiple input multiple output (MIMO) operation, spatial multiplexing (SM), Spatial mapping (including transmit beamforming), spacetime block coding (STBC), low-density parity check (LDPC) coding, and antenna selection (ASEL) may be used. The permitted PPDU formats for HT STA may be non-HT format, HT-mixed format, and HT-greenfield format. In HT STA, PPDU may be transmitted with a 20 MHz bandwidth. In HT STA, PPDU may be transmitted with a 40 MHz bandwidth. HT STA may have MAC functionality including frame aggregation, several block ack features, low-power multipole (PSMP) operation, reverse direction (RD), and protection mechanisms to support coexistence with non-HT STA. good.

[0039] VHT STA (Very High-Throughput STA) supports the same features as HT STA, in addition to the other features supported by HT STA. The VHT STA may also support VHT functionality. The VHT STA may support channel widths of 40MHz and 80MHz as its main PHY function. The VHT STA may also support VHT single-user (SU) PPDUs as its main PHY function. The VHT STA may also support channel widths of 160MHz and 80+80MHz as its main PHY function. Multi-user (MU) PPDUs may be supported. The main PHY functions of VHT do not need to be present in HT STA. A-MPDU padding of VHT PPDUs may be supported as the main MAC function of VHT STA. S-MPDU may be supported as the main MAC function of VHT STA. The main MAC function may support bandwidth indication responses. The main MAC function of VHT does not necessarily have to be present in HT STA. VHT functions include VHT AP (Very High-Throughput AP). ) may be used in the VHT STA associated with it. A subset of VHT features may be used between two VHT STAs that are members of the same IBSS.

[0040] The operating channel width is the channel width that the STA can currently receive. That's fine.

[0041] HE (High Efficiency) STA can also be VHT STA when operating in the 5GHz band. i. A 20MHz-only HE STA does not need to support 40MHz and 80MHz channel widths. Support for a 20MHz operating channel width may be mandatory for HE STA. A 20MHz-only non-AP HE STA does not need to support 40MHz and 80MHz operating channel widths. This may be required. HE STA has operating channel widths of 160MHz and 80+80MHz. Support for this may be optional. HE STA may be HT STA. The main PHY features of HE STA that are not present in HT STA or VHT STA may be DL and UL OFDMA (Up Link Orthogonal Frequency Division Multiple Access) support. The main PHY features of HE STA that are not present in HT STA or VHT STA may be HE AP that supports four or more spatial streams when MU-MIMO (Multi User Multiple Input Multiple Output) is performed across the entire PPDU bandwidth. Support for DL ​​MU-MIMO (Down Link Multi User Multiple Input Multiple Output) It may be so. The main PHY function of HE STA that is not present in HT STA or VHT STA is non-AP HE STA It may also support DL MU-MIMO reception. The main HE STA that does not exist in HT STA or VHT STA. The MAC function may be support for the AP's OMI (Operating Mode Indication) responder and OMI initiator. The main MAC function of HE STA that is not present in HT STA or VHT STA may be support for the AP's individual TWT (Target Wake Time). The main MAC function of HE STA that is not present in HT STA or VHT STA may be support for non-AP STA's two NAV operation.

[0042] EHT (Extreme High Throughput) STA can operate in a bandwidth between 1 GHz and 7.250 GHz. For example, EHT STA may be HE STA at 5GHz and 6GHz. STA may be HE STA at 2.4 GHz. EHT STA may be HT and / or VHT. You may use an operation element for and / or HE STA.

[0043] A UHR (Ultra High Reliability) STA may operate in a bandwidth between 1 GHz and 7.250 GHz. For example, a UHR STA may be an EHT STA at 5 GHz and 6 GHz. For example, a UHR STA may be an HE STA at 5 GHz and 6 GHz. For example, a UHR STA may be a VHT STA at 5 GHz and 6 GHz. For example, a UHR STA may be an HE STA at 2.4GHz. For example, a UHR STA may be an HT STA at 2.4GHz. A UHR STA supports Non Primary Channel Access. The UHR STA may use HT, and / or VHT, and / or HE STA, and / or operation elements for the UHR STA. In other words, the UHR STA may be controlled by an HT operation element, and / or VHT operation element, and / or HE operation element, and / or EHT operation element, and / or UHR operation element.

[0044] APs and STAs within a BSS may transmit based on CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance). The CSMA / CA protocol is designed to reduce the probability of collisions at the point in time when collisions between multiple STAs accessing the medium are most likely to occur. The protocol used may also be acceptable.

[0045] HT BSS may be a BSS in which the Beacon frame transmitted by HT STA includes an HT Capabilities element. VHT BSS may be a BSS in which the Beacon frame transmitted by VHT STA includes a VHT Operation element. HE BSS may be a BSS in which the Beacon frame transmitted by HE STA includes an HE Operation element. It is also possible that the EHT BSS is a BSS in which the Beacon frame transmitted by the HE STA contains an EHT Operation element. For example, the HT BSS is a BSS that enables the HT STA to perform It may be configured with ported STAs. For example, VHT BSS may use the capability of VHT STA. It may be configured with ported STAs. For example, HE BSS supports HE capability It may be composed of STAs that support the capabilities of EHT. For example, EHT BSS supports the capabilities of EHT. It may be composed of STAs.

[0046] In this embodiment, STA may be, for example, HT STA, VHT STA, HE STA, EHT STA, or UHR STA. STA may also be any STA other than those described above.

[0047] AP and STA are frames of multiple frame types that share a common frame format. A frame may be sent. A frame may be defined at the physical layer, MAC layer, and Logical Link Control (LLC) layer, respectively.

[0048] A MAC frame may be a unit of data exchanged between MAC entities. A synonym for MAC frame may be MPDU. An MPDU (MAC Protocol Data Unit) may be a unit of data exchanged between two peer MAC entities using physical layer (PHY) data services. A synonym for MPDU may be MAC frame. An MSDU (MAC Service Data Unit) is a unit exchanged between MAC service access points (SAPs). The information may be distributed in this manner. The MAC frame in the STA may be processed by the MAC layer processing unit SU4. The MAC frame in the STA may be processed by the frame processing unit SU7. The MAC frame may be processed by the MAC layer processing unit AU4. The MAC frame in AP may be processed by the frame processing unit AU7.

[0049] A PHY frame may be a unit of data exchanged between PHY entities. A synonym for PHY frame may be PPDU. A PPDU (PHY Protocol Data Unit) is a unit of data exchanged between two peer PHY entities using the physical layer (PHY) data service. It is also acceptable. A synonym for PPDU may be PHY frame. In STA, PHY frame is a thing The PHY frame in the STA may be processed by the physical layer processing unit SU4. The PHY frame in the AP may be processed by the physical layer processing unit AU4. The PHY frame in the AP may be processed by the frame processing unit AU7.

[0050] The MAC frame format may consist of a MAC header, a Frame body, and an FCS. The MAC frame format consists of a set of fields that occur in a fixed order in all frames. It may be configured as follows.

[0051] The MAC header consists of the Frame Control field, Duration / ID field, and Address1 field. The MAC header may consist of fields such as Address2, Address3, Sequence Control, Address4, QoS Control, HT Control, etc. The MAC header may consist of all of the aforementioned fields. The MAC header may consist of some of the aforementioned fields.

[0052] Figure 5 shows an example of a MAC frame format according to one aspect of this embodiment. In Figure 5, the MAC frame format may consist of a MAC header, a Frame Body, and an FCS. In this case, the MAC header may consist of a Frame Control field, a Duration field, an Address1 field, an Address2 field, an Address3 field, a Sequence Control field, an Address4 field, and a QoS Control field. The MAC frame format may be MPDU.

[0053] The MAC header's Frame Control field is a Protocol Version subfield, Type subfield. Field, Subtype subfield, To DS subfield, From DS subfield More Fragments subfield, Retry subfield, Power Management subfield The MAC header may consist of subfields such as: Frame Control, More data subfield, Protected Frame subfield, +HTC subfield, Control Frame Extension subfield, Compressed SSID Present subfield, ANO Present subfield, BSS BW subfield, Security subfield, AP PM subfield, etc. The field may consist of some of the subfields mentioned above. The Frame Control field of the MAC header may consist of all of the subfields mentioned above. The Frame Control field in the MAC header determines the frame type for a specific subframe. It may also be composed of combinations of "Ludo".

[0054] The frame type may also be indicated in the Type subfield within the Frame Control field of the MAC header. The frame type may be defined as Control frame, Management frame, or Data frame. It may be shown. For example, the Type subfield may be a 2-bit subfield. If the Type subfield is set to 00, the frame type may be a Management frame. If the Type subfield is set to 01, the frame type may be a Control frame. That's fine. If the Type subfield is set to 10, the frame type may also be a Data frame.

[0055] A Management frame may be a frame for managing the connection status between devices. A Control frame may be a frame for managing the communication status between devices. A Data frame may be a frame containing the actual data to be transmitted.

[0056] The Subtype subfield in the Frame Control field of the MAC header may indicate the frame's subtype. Examples of frame subtypes include Association Request and Association R esponse, Reassociation Request, Reassociation Response, Probe Request, Probe Response, Beacon, ATIM, Disassociation, Authentication, Deauthentication, Action Block Ack Request, Block Ack, PS-Poll, RTS, CTS, Ack, CF-End, Data, QoS Data, etc. may be defined. Other subtypes not mentioned above may also be defined.

[0057] The frame subtype may be determined from the Type and Subtype subfields contained in the Frame Control field of the MAC header. The Subtype subfield is 4 bits. It may also be a subfield of . If the Type subfield is set to 00, the Type subfield may indicate a Management frame. If the Type subfield is set to 01, the Type subfield may indicate a Control frame. If the field is set to 10, the Type subfield may indicate a Data frame.

[0058] For example, the Type subfield indicates a Management frame, and the Subtype subfield If 0000 is set, the subtype may be Association Request. The Type subfield indicates Management frame and the Subtype subfield is 0001. If configured, the subtype may be Association Response. In the table, the Management frame is shown, and the Subtype subfield is set to 0010. If present, the subtype may be a Reassociation Request. If the Type subfield indicates a Management frame and the Subtype subfield is set to 0011, the subtype may be a Reassociation Response. If a frame is shown and the Subtype subfield is set to 0100, the subtype may be a Probe Request. If the Type subfield shows a Management frame and the Subtype subfield is set to 0101, the subtype may be a Probe Response. It is also acceptable. The Type subfield indicates the Management frame, and the Subtype subfield If 1000 is set in the configuration, the subtype may be Beacon.

[0059] A Beacon frame may be a frame containing information such as the Beacon period and SSID. A Beacon frame may be a frame that is periodically sent to the STA in the BSS. An Association Response frame may be a frame containing information such as the Status code. An Association Response frame may be a frame that is sent as a response to a received Association request frame. An Association Response frame may be a frame containing information such as the Status code. It may also be a frame. A Reassociation Response frame may be a frame sent in response to an received Reassociation Request frame. A Probe Response frame is The frame may also contain information such as the Beacon's period and SSID. The Probe Response frame may be a frame sent as a response to a received Probe Request frame.

[0060] For example, if the Type subfield indicates Control frame and the Subtype subfield is set to 1011, the subtype may be RTS. If the Type subfield indicates Control frame and the Subtype subfield is set to 1100, the subtype may be CTS. If the Type subfield indicates Control frame and the Subtype subfield is set to 1101, the subtype may be Ack.

[0061] For example, the Type subfield indicates a Data frame, and the Subtype subfield is 00 If 00 is set, subtype may be Data. If the Type subfield indicates a Data frame and the Subtype subfield is set to 1000, subtype This may also be QoS Data.

[0062] The Frame body field of the MAC frame format may consist of fields and elements defined for each subtype of management frame. The elements are displayed in the specified relative order, and non-existent fields or elements may be skipped. If the STA encounters an element ID that it cannot recognize in the frame body of the received management frame, it ignores that element and continues to parse the rest of the management frame body (if any) in search of additional elements with recognizable element IDs. In other words, the frame body of a management frame may contain one or more elements.

[0063] The element format of each element contained within the Frame body is determined by the Element ID field and Length field. Defined in fields, Element ID Extension fields, information fields, etc. This is also acceptable. The Information field may contain information specific to the element. For example, if the Element ID is 61, it may indicate the element for HT Operation. For example, Element If the ID is 191, it may indicate an element for VHT Capabilities. For example, if the Element ID is 192, it may indicate an element for VHT Operation. For example, if the Element ID is 255, it may indicate an element for HE Capabilities. For example, if the Element ID is 255, it may indicate an element for HE Operation.

[0064] An Operation element may be information for controlling the operation of STA within BSS. An Operation element may consist of multiple fields.

[0065] The HT Operation element is defined by the Element ID field, Length field, Primary Channel field, HT Operation information field, and Basic HT-MCS Set field. The Primary Channel field may indicate the channel number of the primary channel. The HT Operation information field may indicate the Secondary Channel Offset field. The STA Channel Width field may also be included. The Secondary Channel Offset field may indicate the offset of the secondary channel relative to the primary channel. If the Secondary Channel Offset field is set to 1, the secondary channel may be positioned above the primary channel. If the Secondary Channel Offset field is set to 3, The secondary channel may be located below the primary channel. If the Secondary Channel Offset field is set to 0, the secondary channel may not exist. The STA Channel Width field may define the channel width that the STA can use for transmission. The STA Channel Width field may be set to 0 for 20MHz. The STA Channel Width field may allow the use of any channel within the supported channel width set. In total, 1 may be set. The operation of HT STA(s) within the BSS may be controlled by an HT Operation element. That is, an HT Operation element may be an operation element that controls the operation of HT STA within the BSS.

[0066] HT Operation elements may be sent in a Management frame. HT Operation elements may be sent in a Control frame. HT Operation elements may be sent in a Data frame. For example, an HT operation element may be sent in a Beacon frame. For example, an HT operation element may be sent in an Association Response frame. For example, an HT operation element may be sent in a Reassociation Response frame. For example, an HT operation element may be sent in a Probe Response frame.

[0067] The VHT Operation element has an Element ID field, a Length field, and VHT Operation The information field may also be defined in the Basic VHT-MCS And NSS Set field. The VHT Operation information field consists of the Channel Width field, Channel Center Frequency Segment 0 field, and Channel Center Frequency Segment 1 field. The operation of VHT STA(s) within the BSS may be controlled by the HT Operation element and the VHT Operation element. In other words, the VHT Operation element controls the VHT STA(s) within the BSS. It may also be an operation element that controls the behavior.

[0068] A VHT operation element may be sent in a Management frame. A VHT operation element may be sent in a Control frame. A VHT operation element may be sent in a Data frame. For example, a VHT operation element may be sent in a Beacon frame. For example, the VHT operation element may be sent in the Association Response frame. For example, a VHT operation element may be sent in a Reassociation Response frame. For example, the VHT operation element may be sent in the Probe Response frame.

[0069] The Channel Width field in the VHT Operation information field is for HT operation The BSS bandwidth may be defined along with the element's STA channel width field. The Channel Width field may be set to 0 for a 20MHz or 40MHz BSS bandwidth. Good. The Channel Width field may be set to 1 for 80MHz, 160MHz, or 80+80MHz BSS bandwidth. The Channel Width field may be set to 2 for 160MHz BSS bandwidth. The Channel Width field may be set to 2 for 80+80MHz BSS bandwidth. 3 may be set. Values ​​in the Channel Width field ranging from 4 to 255 are reserved. That's fine.

[0070] Channel Center Frequency Segment 0 in the VHT Operation information field The channel is for VHT BSS at 20MHz, 40MHz, 80MHz, 160MHz, or 80+80MHz. You may define a center frequency. Channel Center Frequency Segment 0 field For BSS bandwidths of 20MHz, 40MHz, or 80MHz, this may indicate the channel center frequency index of 20MHz, 40MHz, or 80MHz on which VHT BSS operates. The Channel Center Frequency Segment 0 field is for a BSS bandwidth of 160MHz and the Channel Width subfield is If 1, it may indicate the channel center frequency index of the 80 MHz channel segment containing the primary channel. The Channel Center Frequency Segment 0 field is the 160 MHz BSS. When the bandwidth and Channel Width subfield are 2, VHT BSS operates on a 160MHz channel. The channel center frequency index may also be shown. Channel Center Frequency Segment The 0 field has a BSS bandwidth of 80 + 80 MHz and a Channel Width subfield of 1 or 3. In this case, the channel center frequency index of the primary 80MHz channel of the VHT BSS may be shown.

[0071] Channel Center Frequency Segment 1 in the VHT Operation information field The code defines the channel center frequency for a 160MHz or 80+80MHz VHT BSS. The Channel Center Frequency Segment 1 field may be set to 0 for BSS bandwidths of 20MHz, 40MHz, or 80MHz. The Channel Center Frequency Segment 1 field may be set to 0 for BSS bandwidths of 160MHz and Channel Width subfield is 1. The Channel Center Frequency Segment 1 field may indicate the channel center frequency index of the 160MHz channel on which the BSS operates. If the BSS bandwidth is 160MHz and the Channel Width subfield is 2, this field may be set to 0. If the BSS bandwidth is 80+80MHz and the Channel Width subfield is 1 or 3, the Channel Center Frequency Segment 1 field may indicate the channel center frequency index of the Secondary 80MHz channel of the VHT BSS.

[0072] The HE Operation Element format includes the Element ID field, the Length field, and the Element ID Extension field, HE Operation Parameter field, BSS Color Information field, Basic HE-MCS And NSS Set field, VHT Operation Information field Rudo, Max Co-Hosted BSSID Indicator field, 6GHz Operation Information field It may consist of a rd, etc. When operating in the 2.4GHz band, the HE STA in the HE BSS may be controlled by an HT Operation element and an HE Operation element. When operating in the 5GHz band, the HE STA in the HE BSS may consist of an HT Operation element and an VHT Operation element. (If present), and may be controlled by an HE Operation element in the 6GHz band. If operating, the HE STA within the HE BSS may be controlled by an HE Operation element. In other words, the HE Operation element may be an operation element that controls the operation of the HE STA within the BSS.

[0073] HE operation elements may be sent in a Management frame. HE operation elements may be sent in a Control frame. HE operation elements may be sent in a Data frame. For example, an HE operation element may be sent in a Beacon frame. For example, an HE operation element may be sent in an Association Response frame. For example, an HE operation element may be sent in a Reassociation Response frame. For example, an HE operation element may be sent in a Probe Response frame.

[0074] The HE Operation Parameter field format of the HE Operation element format may consist of the Default PE Duration subfield, TWT Required subfield, TXOP Duration RTS Threshold subfield, VHT Operation Information Present subfield, Co-Hosted BSS subfield, ER SU Disabled subfield, 6GHz Operation Information Present subfield, Reserved subfield, etc. The VHT Operation Information Present subfield may be set to 1 to indicate that the VHT Operation Information field exists in the HE Operation element, and to 0 otherwise. The 6GHz Operation Information Present field may be set to 1 to indicate that the 6GHz Operation Information field exists, and to 0 otherwise.

[0075] The BSS Color Information field format of the HE Operation element format may consist of a BSS Color subfield, a Partial BSS Color subfield, a BSS Color Disabled subfield, and so on.

[0076] The 6GHz Operation Information field in the HE Operation element format may provide channel and bandwidth information related to 6GHz operation. The 6GHz Operation Information field format includes a Primary channel field, a Control field, a Channel Center Frequency Segment 0 field, and a Channel Center Frequency Segment 1 field. It may consist of a Minimum Rate field, etc. The Primary Channel field is The channel number of the primary channel at 6 GHz may also be indicated. The Channel Center Frequency Segment 0 field indicates the 20 MHz, 40 MHz, 80 MHz, 160 MHz of the BSS operating at 6 GHz, and This may indicate the channel center frequency index of the 80+80MHz channel. The Frequency Segment 0 field is used when the BSS channel width is 160MHz or 80+80MHz. The Channel Center Frequency Segment 1 field may indicate the channel center frequency index of the primary 80MHz channel. The Channel Center Frequency Segment 1 field may indicate the channel center frequency index of the 160MHz channel of the BSS operating at 6GHz. The Channel Center Frequency Segment 1 field may indicate the channel center frequency index of the secondary 80MHz channel if the channel width is 80+80MHz. The Control field format within the 6GHz Operation Information field format may consist of the Channel Width field, Duplicate Beacon subfield, Regulatory Info subfield, Reserved subfield, etc. The Channel Width field indicates the BSS channel width and may be set to 0 for 20MHz, 1 for 40MHz, 2 for 80MHz, or 3 for 80+80MHz or 160MHz.

[0077] The EHT Operation element format may also be an Operation element for controlling an EHT STA operating in an EHT BSS. When operating in the 2.4GHz band, an EHT STA in an EHT BSS may be controlled by an HT Operation element, an HE Operation element, and an EHT Operation element. Good. When operating in the 5GHz band, the EHT STA in the EHT BSS consists of the HT Operation element, VHT Operation element (if present), HE Operation element, and EHT Operation element. It may be controlled by the HE Operation element. When operating in the 6GHz band, the EHT STA in the EHT BSS may be controlled by the HE Operation element and the EHT Operation element.

[0078] The EHT Operation element format includes Element ID, Length, Element ID Extension, EHT Operation Parameter, Basic EHT-MCS And Nss Set, and EHT Operation Information. It may consist of fields. The EHT Operation Information field may consist of a Control subfield, a CCFS0 subfield, a CCFS1 subfield, and a Disabled Subchannel Bitmap subfield. The Control subfield may include a Channel Width subfield. The Channel Width subfield may be a subfield for defining the EHT BSS bandwidth. The Channel Width subfield may define 0 for a 20MHz EHT BSS bandwidth. The Channel Width subfield may define 1 for a 40MHz EHT BSS bandwidth. The Channel Width subfield may define 2 for an 80MHz EHT BSS bandwidth. For a 160MHz EHT BSS bandwidth, 3 may be defined. Channel Width subfeed Rudo may define 4 for a 320MHz EHT BSS bandwidth. CCFS0 subfield The primary 80MHz EHT BSS is available for 20MHz EHT BSS, 40MHz EHT BSS, 80MHz EHT BSS, and 160MHz EHT BSS. The CCFS0 subfield may define the channel, or the center frequency of the primary 160MHz channel of the 320MHz EHT BSS. The CCFS0 subfield may indicate the channel center frequency index of the 20MHz channel, 40MHz channel, or 80MHz channel on which the EHT BSS operates, for a 20MHz BSS bandwidth, a 40MHz BSS bandwidth, or an 80MHz BSS bandwidth. The CCFS0 subfield may indicate the channel center frequency index of the primary 80MHz channel for a 160MHz BSS bandwidth. The CCFS0 subfield may indicate the channel center frequency index of the primary 160MHz channel for a 320MHz BSS bandwidth. The CCFS1 subfield may define the center frequency of the 160MHz EHT BSS or the 320MHz EHT BSS. The field may be set to 0 for the 20MHz BSS bandwidth, 40MHz BSS bandwidth, or 80MHz BSS bandwidth. The CCFS1 subfield may index the center frequency of the 160MHz channel for the 160MHz BSS bandwidth. CCFS1 subfield This may involve indexing the center frequency of a 320MHz channel for a 320MHz BSS bandwidth.

[0079] A-MSDU (Aggregate MSDU) is a sequence of A-MSDU subframes. Each A-MSDU subframe may consist of an A-MSDU subframe header followed by MSDU and padding 0-3. In this configuration, the A-MSDU subframe header may include the DA field, SA field, and Length field. The DA and SA fields may contain the values ​​passed in MA-UNITDATA.request and MAUNITDATA.indication primitives. The Length field may contain the MSDU The length may be included in octets (i.e., 8 bits).

[0080] Figure 6 shows an example of an A-MSDU according to one aspect of this embodiment. In Figure 6, the MAC frame format may consist of a MAC header, a Frame Body, and an FCS. Here, the MAC header may consist of a Frame Control field, a Duration field, an Address1 field, an Address2 field, an Address3 field, a Sequence Control field, an Address4 field, and a QoS Control field. The MAC frame format may also be an MPDU. The Frame Body may consist of n A-MSDU subframes. Each A-MSDU may consist of an A-MSDU subframe header, MSDU, and padding. The A-MSDU subframe header is a DA file. It may consist of a field, an SA field, and a Length field.

[0081] A-MPDU (Aggregate MPDU) is a sequence of one or more A-MPDU subframes and a variable amount of EOF. It may consist of padding. Each A-MPDU subframe may optionally be followed by an MPDU delimiter. It may be composed of MPDUs. Each nonfinal A-MPDU subframe within an A-MPDU is defined by the length of the subframe. Padding octets may be added to make the length a multiple of 4 octets. The EOF Padding field may consist of an EOF Padding subframe field and an EOF Padding Octets field. A-MPDU pre-EOF padding may refer to the contents of A-MPDU without including the EOF Padding field. The MPDU delimiter consists of the EOF field, the Reserved field, and the MPDU Even if it consists of a Length field, a CRC field, and a Delimiter Signature field good.

[0082] Figure 7 shows an example of an A-MPDU according to one aspect of this embodiment. In Figure 7, the A-MPDU may consist of n A-MPDU subframe fields and an EOF Padding field. The n A-MPDU subframe fields may be referred to as A-MPDU pre-EOF padding. Each A-MPDU subframe field may consist of an MPDU delimiter field, an MPDU field, and a padding field. The MPDU delimiter field may consist of an EOF field and a Reserved field. Fields: MPDU Length field, CRC field, Delimiter Signature field The EOF Padding field may consist of an EOF Padding subframe field and an EOF Padding Octets field.

[0083] MSDU or MMPDU (MAC Management Protocol Data Unit) for smaller MAC-level files The process of splitting into MPDUs may also be called fragmentation. MAC is Fragmenting and reconstructing MSDUs or MMPDUs that are delivered in individually addressed MPDUs It is permissible.

[0084] Figure 8 shows an example of Fragmentation according to one aspect of this embodiment. The MSDU may be fragmented into n parts. The MSDU is divided into n Frame Bodies, and each Frame Body is assigned MAC HDR (header) and CRC (Cyclic Redundancy Check). That's fine.

[0085] A PPDU consists of components such as the PHY preamble, PHY header, and PSDU (PHY Service Data Unit). PPDU may also be assigned L-STF, L-LTF, and L-SIG. PPDU may also be assigned HT-STF, HT-LTF, and HT-SIG. PPDU may also be assigned VHT-STF, VHT-LTF, VHT-SIG-A, and VHT-SIG-B. The following may be assigned: PPDU may be assigned HE-STF, HE-LTF, HE-SIG-A, HE-SIG-B. PPDU may be assigned HT-STF, HT-LTF, HT-SIG in addition to L-STF, L-LTF, L-SIG. In addition to L-STF, L-LTF, and L-SIG, PPDU also includes VHT-STF, VHT-LTF, VHT-SIG-A, and VHT-SIG-B. The following may be assigned: In addition to L-STF, L-LTF, and L-SIG, PPDU may also be assigned HE-STF, HE-LTF, HE-SIG-A, and HE-SIG-B.

[0086] Figure 9 shows an example of a PPDU according to one aspect of this embodiment. In Figure 9, L-STF and L-LTF may be added to the PPDU in the PHY layer. In Figure 9, the PPDU is a PSDU, PHY It may consist of a preamble, PHY header, Tail, and Padding. Here, the PSDU may be an A-MPDU in the MAC sublayer. The A-MPDU may consist of multiple MAC frame formats. Here, one MAC frame format may consist of a MAC header field, an A-MSDU field, and an FCS field.

[0087] The time interval between frames may also be called IFS (Inter Frame Space). STA is specified The carrier sense function may be used at the specified time interval to determine if the medium is idle. In other words, the STA may perform carrier sense for the duration of the IFS to determine whether the medium is idle or not.

[0088] Multiple types of IFS may be defined. For example, IFS could be RIFS (Reduced Inter Frame Space), SIFS (Short Inter Frame Space), PIFS (Priority Inter Frame Space), DIFS (DCF Inter Frame Space), AIFS (Arbitration Inter Frame Space), or EIF. S (Extended Inter Frame Space), SBIFS (Short Beamforming Inter Frame Space), BRPIFS (Beam Refinement Inter Frame Space), MBIFS (Medium Beamforming Inter Frame Space), and LBIFS (Long Beamforming Inter Frame Space) may be defined.

[0089] The time interval may differ depending on the type of IFS. For example, PIFS has a longer time interval than SIFS. An IFS with a longer interval is also acceptable. DIFS may be an IFS with a longer time interval than PIFS. The type of IFS may provide a priority level for access to the wireless medium. In other words, an IFS with a short time interval may be an IFS with a high priority level for access to the wireless medium.

[0090] SIFS (Short Inter Frame Space) is the last symbol or signal of the previous frame. This may be the time from the end of the extension (if any) until the first symbol of the preamble for the next frame is seen on the wireless medium.

[0091] Priority Inter Frame Space (PIFS) may be used to control access to media in order to obtain priority access. PIFS may also be used to perform Clear Channel Assessment (CCA) on secondary 20MHz, secondary 40MHz, and secondary 80MHz channels before transmission at 40MHz, 80MHz, and 160MHz.

[0092] CCA (Clear Channel Assessment) is the process of determining the current usage status of a wireless medium. It is acceptable. CCA is a function at the physical layer for determining the current usage state of the wireless medium. It is also acceptable to refer to CCA as CCA function.

[0093] DIFS (DCF Inter Frame Space) may be used by an STA operating with DCF to transmit data frames (MPDUs) and management frames (MMPDUs). After an STA using DCF has successfully received a frame, the CS (Carrier Sense) mechanism determines that the medium is idle at the TxDIFS slot boundary, and the value of the STA's backoff counter is... If the value is zero, you may proceed with sending.

[0094] AIFS (Arbitration Inter Frame Space) may be used for QoS STAs that access media using EDCAF.

[0095] EIFS (Extended Inter Frame Space) may be used in DCF when the medium is immediately determined to be idle after receiving a frame with an incorrect FCS value.

[0096] The basic method of accessing MACs used by STAs may be DFC (Distributed Coordination Function). DCF ensures the same coordination across all STAs within the BSS when the network is operational. The functional logic may always be an active class adjustment function. DCF is one of CSMA / CA It may be a species. DCF may be a feature that needs to be implemented in all STAs.

[0097] The STA detects the medium and determines whether another STA is currently transmitting in order to transmit. If the medium is not busy, the STA may transmit. If interrupted, STA will postpone the transmission until the current transmission is complete.

[0098] In the CSMA / CA distributed algorithm, specified between frame exchange sequences. A gap exists in the specified period. The specified gap in the frame exchange sequence may be referred to as the IFS. The transmitting STA ensures that the medium is idle for a certain required period before attempting to transmit. This required period may be the specified gap in the frame exchange sequence. This required period may be referred to as the IFS. .

[0099] STA resets the backoff counter before attempting to transmit again after a delay or immediately after a successful transmission. The backoff counter may be initialized to a random value. The STA may decrement the backoff counter once every aSlotTime while the medium is idle. aSlotTime may be the time length of the slot. The slot time referred to here may be the time of the slot that the MAC uses to define the IFS. aSlotTime may also be a predetermined time length. It may also be a fixed time length (for example, in microseconds).

[0100] The basic media access protocol may be DCF. DCF is a protocol that allows CSMA / CA and media to be accessed via Through the use of a random backoff counter after the G state, media between compatible PHYs Enables automatic sharing. All individually addressed traffic will use an immediate positive acknowledgment (Ack frame), and if an Ack frame is not received, it will not send Resending is scheduled by the person in charge. Multiple STAs are waiting for the medium to become available. There is a possibility of collisions occurring, and the likelihood of collisions is highest when the medium transitions from busy to idle. Therefore, a random backoff procedure is necessary to resolve medium contention. An STA transmission can interfere with (collision with) other STA transmissions even if the carrier sense function (CS function) indicates the medium is not busy. Interference is expected. This may be specified if a response frame is not received.

[0101] STAs that wish to initiate the transfer of data frames or management frames using DCF may use a carrier sense mechanism to determine the busy / idle state of the medium. If the medium is busy, the STA will continue without interruption until the medium is determined to be idle during the IFS. It waits. Here, the type of IFS is when the transition to the last idle state is correctly received on the medium. If the detection is based on frames that were not detected, EIFS may be used. Otherwise, IFS The type may be DIFS. After the medium idles in DIFS or EIFS, the STA may generate a random backoff count for an additional delay time before transmission. However, if the backoff counter already contains a non-zero value, the selection of a random number is not required. The backoff counter may be a pseudorandom integer obtained by subtracting a uniform variance between [0, CW]. CW is an integer within the range of the values ​​aCWmin and aCWmax, which are characteristics of the PHY. It is also acceptable to have a value of CW greater than or equal to aCWmin and less than or equal to aCWmax. CW may also be called the Contention Window.

[0102] The contention window parameter may take the initial value of aCWmin. The contention window takes a series of values ​​each time an MPDU transmission attempt fails and any STA retry increases until the contention window reaches the value of aCWmax. The contention window maintains the value of aCWmax until it is reset when aCWmax is reached. If a data frame or management frame is successfully sent, the contention window may be reset to aCWmin. If SSRC reaches dot11ShortRetryLimit, the contention window may be reset to aCWmin. The set of contention window values ​​may be in ascending order as integers obtained by powers of 2 minus 1, starting from the PHY-specific aCWmin value and continuing up to the PHY-specific aCWmax. For example, if aCWmin is 7 and aCWmax is 255, the set of contention window values ​​would be 7, 15, 31, 63, 127. It may also be a set that includes 255.

[0103] For example, in OFDM PHY characteristics, with a 20MHz channel spacing, aSlotTime may be 9μs. In OFDM PHY characteristics, with a 20MHz channel spacing, aCWmin may be 15. In OFDM PHY characteristics, with a 20MHz channel spacing, aCWmax may be 1023.

[0104] A QoS facility may include an additional coordinating function called HCF (Hybrid Coordination Function), which is only available in a QoS network configuration. HCF is implemented in all QoS STAs. It may be done. HCF combines aspects of competition-based and competition-free access methods to provide parameterized QoS access prioritized to QoS STA on the wireless medium. It is a well-functioning system that continues to support non-QoS STA for best-effort transfers. It is also acceptable. HCF stands for EDCA (Enhanced Distributed Channel Access). Both access and HCCA (HCF controlled channel access) Features provided by may be included. HCF uses EDCA mechanisms for competition-based transfers. You may also use a competition-based channel access method called M. HCF is competition-free. A control channel access method called the HCCA mechanism may be used for the transfer.

[0105] HCCA (HCF Controlled Channel Access) is an individually addressed downlink For transmission, uplink transmission, and direct link transmission, QoS STA ensures that contention is handled. This may also be a channel access mechanism used by a Hybrid Coordinator (HC) to coordinate the use of a non-existent medium.

[0106] The EDCA mechanism uses eight different UP (User Priority) values ​​to send wireless media to the STA. It may provide differentiated distributed access. UP uses MSDU (MAC Service Data Unit) This is an associated value and may indicate how MSDU is processed. UP is the higher level of MAC. The MSDU may be assigned at the layer. UP may take any value from 0 to 7. The EDCA mechanism may define four ACs (Access Categories) to support traffic delivery using the STA's UP. ACs are QoS STA channels AC may be a label for a common set of EDCA parameters used to compete for and send MSDUs with a specific priority. AC may take one of the values ​​AC_BE, AC_BK, AC_VI, or AC_VO. AC_BE, AC_BK, AC_VI, and AC_VO may indicate access categories corresponding to best effort, background, video, and voice, respectively.

[0107] QoS (Quality of Service) functions (facilities) are parameterized and prioritized. Extended functions, channel access rules, and frame rates used to provide a QoS are also used. - It may be a mat, frame exchange sequence, or managed object. QoS STA is , or an STA that implements QoS functionality. A QoS AP is an AP that supports QoS functionality. Alternatively, a QoS BSS may also be a BSS that provides QoS functionality. This may include a QoS AP.

[0108] An EDCFA (Enhanced Distributed Channel Access Function) is a logical function within a QoS STA that uses an EDCA to determine when a frame in a transmit queue with an associated AC is permitted to be transmitted over the radio medium. There may be one EDCFA per AC. DCFs and HCFs may be defined to operate within the same BSS.

[0109] Each EDCAF may maintain a backoff counter measured in the backoff slot. When the backoff procedure is called, the backoff counter is raised in a uniform distribution from 0 to CW. It may be set to an integer value selected randomly. AIFS may be defined as AIFSN × aSlotTime + aSIFSTime. For example, in OFDM PHY characteristics, with a 20MHz channel spacing, aSlotTime may be 9μs and aSIFTTime may be 16μs. AIFSN may differ for each AC. For example, if AC is AC_BK, AIFSN may be 7. If AC is AC_BE, AIFSN may be 3. If AC is AC_VI, AIFSN may be 2. i. If AC is AC_VO, AIFSN may be 2. CW may be in ascending order as integers obtained by subtracting 1 from a power of 2, starting from the PHY-specific CWmin value and continuing to the PHY-specific CWmax. CWmin and CWmax may be different for each AC. For example, if AC is AC_BK, CWmin may be aCWmin and CWmax may be aCWmax. If AC is AC_BE, CWmin may be aCWmin and CWmax may be aCWmax. If AC is AC_VI, CWmin may be {(aCWmin+1) / 2}-1 and CWmax may be aCWmin. If AC is AC_VO, CWmin may be {(aCWmin+1) / 4}-1 and CWmax may be {(aCWmin+1) / 2}-1 may also be used. In OFDM PHY characteristics, aCWmin may be 15 for a 20MHz channel spacing. In OFDM PHY characteristics, aCWmax may be 1023 for a 20MHz channel spacing. The STA may decrement its backoff counter once for each aSlotTime period while the medium is idle. It takes a series of the following values ​​each time an MPDU transmission attempt fails and any STA retry increases.

[0110] In HCF, the basic unit of assigning transmission rights to a wireless medium may be a TXOP. A TXOP (Transmission Opportunity) is a transmission opportunity assigned by a specific QoS STA to a wireless medium during frame exchange. It may be a time interval during which one has the right to start a match. TXOP may be defined by the start time and maximum duration. TXOP may be obtained by EDCA. In other words, STA is EDCA If you do this, you may earn TXOP.

[0111] Figure 10 shows an example of a backoff procedure according to one aspect of this embodiment. In Figure 10, the horizontal axis may represent time. 1001 may represent the transmission of STA#1. 02 may be an IFS. 1003 may be a backoff counter. 100 3 may be called the contention window. 1004 is the transmission of STA#2. Alternatively, in Figure 10, STA#2 may detect 1001 on the channel. STA#2 is 1 While 001 is detected, the channel may be judged as busy. In other words, 1001 may be the period during which the channel is judged as busy. STA#2 implements carrier sense. You may then determine whether the channel is busy or not. STA#2 will complete period 1001. If the channel is determined to be idle, carrier sensing may be performed for a period of 1002. For example, 1002 may be DIFS. 1002 may also be AIFS. STA#2 If the channel is idle for a period of 1002, then 1003 may be started. 1003 decrements the backoff counter while the channel is idle. For example, 6 backoff counters may be generated in 1003. The backoff counter is decremented while the channel is idle, and when the backoff counter reaches 0, STA#2 sends Signal (1004) may be performed. Here, the backoff counter may be determined to be between 0 and CW. CW may be a value selected from a range of values ​​between aCWmin and aCWmax. The channel may be called the radio medium.

[0112] The carrier sense mechanism uses NAV (Network Allocation Vector) status and STA transmission. The mechanism may combine the physical carrier sensing of the transmitter to determine whether the medium is busy or idle. The NAV may be maintained by each STA and may be an indicator of the period during which transmission to the wireless medium is not initiated by the STA, regardless of whether the STA's CCA (Clear Channel Assessment) function senses that the medium is busy.

[0113] The carrier sense mechanism in STA may be performed in the physical layer processing unit SU3 and / or the MAC layer processing unit SU3. The carrier sense mechanism in AP may be performed in the physical layer processing unit AU3 and / or the MAC layer processing unit AU3.

[0114] NAV may be a counter that counts down to 0 at a constant rate. STA may indicate that the virtual carrier sense is idle if the NAV counter is 0. STA may indicate that the virtual carrier sense is busy if the NAV counter is not 0. Physical and virtual carrier sensing functions may be used to determine the state of a medium. If either the physical or virtual carrier sensing function indicates busy, the medium may be considered busy. If both the physical and virtual carrier sensing functions indicate idle, the medium may be considered idle. Virtual carrier sensing may also be referred to as NAV. Good. NAV may be provided by all MACs. The NAV counter may be called a NAV timer.

[0115] The physical carrier sense function in the STA may be controlled by the physical layer processing unit SU3. The virtual carrier sense function in the STA may be controlled by the MAC layer processing unit SU4. The physical carrier sense function may be controlled by the physical layer processing unit AU3. The carrier sense function may be controlled by the MAC layer processing unit AU4. NAV in STA is the MAC layer The NAV in the AP may be controlled by the MAC layer processing unit SU4.

[0116] The STA may set NAV if the address field of the received frame is not its own address. When the STA receives at least one valid frame in the PSDU, it sets NAV in the PSDU. The STA may update the NAV using the information from any valid Duration field. The STA may update the NAV if the value indicated by the Duration field of the received frame is greater than the current NAV value. The STA may update the NAV if the RA (address) of the received frame is greater than the STA's own MAC address. If they are equal, the NAV will not be updated.

[0117] STA may maintain two NAVs. AP may maintain two NAVs. The two NAVs may be an intra-BSS NAV and a basic NAV. The intra-BSS NAV is controlled by an intra-BSS PPDU. The basic NAV may be updated by an inter-BSS PPDU. The basic NAV may be updated by an intra-BSS PPDU or a PPDU that cannot be classified as an inter-BSS PPDU. An STA maintaining two NAVs may indicate that the media is idle if the timers of both NAVs are 0. In other words, an STA maintaining two NAVs may indicate that the media is idle if the timers of both the intra-BSS NAV and the basic NAV are 0. The virtual CS indication may indicate that the media is busy if at least one of the two NAV timers is not 0. In other words, if an STA or AP maintaining two NAVs has a timer that is not zero on at least one Intra-BSS NAV or basic NAV, the virtual CS indication will indicate that the media is busy. You may show it.

[0118] The NAV may be a basic NAV. The NAV may also be an intra-BSS NAV. basic NAV It may also be called NAV. Intra-BSS NAV may also be called NAV. NAV is called basic NAV. This may be done. NAV may be called intra-BSS NAV. Basic NAV may be called NAV. Intra-BSS NAV may be called NAV.

[0119] Carrier sense (CS) may be performed through both physical and virtual mechanisms. Carrier sense may also be referred to as a carrier sense function. Carrier sense may also be referred to as a carrier sense mechanism. A virtual carrier sense mechanism is implemented by distributing reservation information that notifies of advance notice of media use. Exchanging RTS frames and CTS frames before the actual data frame may be one means of distributing media reservation information. The RTS frame and CTS frame are the actual data frame The Duration field defines the period during which the medium is reserved for sending an Ack frame. May include: RTS frames (sent by the originating STA) or CTS frames (destination The STA that receives the originating STA processes the media reservation. The STA receives from the originating STA. Even if it's not possible, you can still know that the media is intended to be used to send the data frame. The media reservation information is in the Duration / ID field of the individually addressed frame. It may be distributed via [platform name]. The Duration / ID field indicates the time (period) for which the media is reserved. The Duration / ID field may indicate the time the medium is reserved to end in the following Ack frame. For fragment sequences, the Duration / ID field This is the time the medium is reserved until the end of the Ack frame that follows the next fragment. This may also be shown. The RTS / CTS mechanism may function even when multiple BSSs using the same channel overlap. The media reservation mechanism may function across BSS boundaries.

[0120] The RTS (Request To Send) frame format includes the Frame Control field and the Duration field. The RTS frame format may include the RA field, TA field, and FCS field. The Duration field of the RTS frame format may indicate the time (in microseconds) required to transmit the pending data or management frame, one CTS frame, one Ack frame, and three SIFS frames. The RA field of the RTS frame indicates the intended direct transmission of the pending individual addressable frame. The TA field may be the address of the receiving STA. The TA field may be the address of the STA sending the RTS frame or the bandwidth signal TA of the STA sending the RTS frame.

[0121] The CTS (Clear To Send) frame format uses the Frame Control field and the Duration field. The RA field and FCS field may be included. The Duration field of the CTS frame format sent in response to an RTS frame may be the Duration field of the previous RTS frame minus the time required to send the CTS frame and the SIFS for it. In other words, it may be the time required to send the pending data or management frame, one Ack frame, and two SIFS. The CTS frame is the first frame of the exchange, and the pending data Alternatively, if the management frame requires an acknowledgment, the Duration field indicates the time required to send the pending data or management frame, two SIFSs, and one Ack frame. (May be in microseconds). The CTS frame is the first frame of the exchange and is held. If the data or management frame inside does not require immediate acknowledgment, the Duration field is the time required for the pending data or management frame and one SIFS transmission. It is also possible. If the CTS frame is a response to the RTS frame, the RA fee of the CTS frame The `rd` bit is set to the address of the TA field of the RTS frame, and the individual / group bits are set to 0. It may be set to if the CTS frame is the first frame in a frame exchange, then the RA frame The field may be set to the MAC address of the sender.

[0122] Figure 11 is a diagram showing an example of a NAV according to one aspect of this embodiment. In Figure 11, horizontal The axis may represent time. For example, 1101 may be the timeline of AP#1's operation. 1102 may be the timeline of STA#1's operation. 1103 may be the timeline of AP#2's operation. It could be the production timeline. 1104 could also be the timeline of STA#2's operation. Good. 1101, 1102, 1103, and 1104 may be timelines on the same channel. 1105 may be an RTS frame. 1106 may be the NAV period for AP#1. 1107 may be a CTS frame. 1108 may be the NAV period for STA#2. It can be in between. 1109 can be a Data frame. 1110 is an AcK frame. It may be present. 1111 may be IFS. 1112 is Contention Window It may also be U (backoff counter, backoff procedure). STA#1 is 1105 to AP#2 It may be sent to [address]. AP#1 will receive 1105 and the duration indicated in the RTS Duration field will be [duration]. You can also set it to 1106. When AP#2 receives 1105, it sends 1107 to STA#1. You may send a message. STA#2 may set 1108 for the duration indicated in the CTS Duration field upon receiving 1107. STA#1 may send 1109 upon receiving 1107. AP#2 may send 1110 to STA#1 upon receiving 1109. AP#1 may start 1112 with 1111 if the channel is idle after 1106 has finished. STA#2 If the channel is idle after 1108 has finished, 1112 may be started with 1111. There may be an IFS between 1105 and 1107. AP#2 may send 1107 if the channel is idle during the IFS period before sending 1107. There may be an IFS between 1107 and 1109. STA#1 may send 1109 if the channel is idle during the IFS period before sending 1109. There may be an IFS between 1109 and 1110. AP#2 will send 1110 if the channel is idle during the IFS period before sending 1110. This is also possible. Here, for example, AP#1 may be 202 in Figure 2. For example, STA#1 may be 207 in Figure 2. For example, AP#2 may be 206 in Figure 2. This is also acceptable. For example, STA#2 may be 2088 in Figure 2. 1101 is AP Alternatively, it may be a timeline of STA operation. 1102 is a timeline of AP or STA operation. It may be a timeline. 1103 may be the timeline of AP or STA operation. 1104 may be the timeline of AP or STA operation.

[0123] STA or AP may perform a frame exchange. For example, frame exchange The exchange occurs when STA or AP transmits RTS, and STA or AP transmits CTS in response to RTS. This may also be the case. For example, a frame exchange may occur when the STA or AP sends a trigger frame and the STA or AP sends a CTS in response to the trigger frame. For example, a frame exchange may be , when STA or AP sends MU-RTS and STA or AP sends CTS in response to MU-RTS It is also acceptable. For example, a trigger frame is used when the AP assigns a RU (Resource Unit) to the STA. It may be used for this purpose. The trigger frame may be a frame that contains at least a common Info field and / or a User Info List field. The common Info field may contain multiple STAs. It may be a field for notifying common information. The User Info List field may contain zero or more User Info fields. Each User Info field assigns a RU to each STA. It may also be a field for that purpose. For example, the User Info field may include the RU allocation subfield.

[0124] Channel bonding may transmit using one or more 20MHz channels. Alternatively, channel bonding may transmit using multiple 20MHz channels. Channel bonding may transmit using multiple adjacent 20MHz channels. Channel bonding may also be referred to as channel aggregation. Good. Channel bonding uses multiple channels simultaneously to transmit data, so This increases bandwidth and improves data transmission speed. Multiple channels used by BSS members This may include a primary channel and one or more secondary channels, and channel bonding may be performed using multiple of these channels.

[0125] The primary channel is a common channel for all STAs that are members of the BSS. The primary 20MHz channel may be a 20MHz channel on which a 20MHz PPDU is transmitted in a 40MHz, 80MHz, 160MHz, or 80+80MHz BSS. The primary 40MHz channel may be a 40MHz channel on which a 40MHz PPDU is transmitted in an 80MHz, 160MHz, or 80+80MHz BSS. Alternatively, the primary 80 channel may be an 80MHz channel on which an 80MHz PPDU is transmitted in a 160MHz or 80+80MHz BSS. The primary 160MHz channel may be on a 320MHz BSS. It may also be a 160MHz channel including a primary 20MHz channel. For example, the primary channel in a 20MHz, 40MHz, 80MHz, 160MHz, 80+80MHz, or 320MHz BSS may be referred to as the primary 20MHz channel. The primary channel may also be the channel on which the backoff procedure is performed.

[0126] A secondary channel is a channel associated with a primary channel and may be a channel used to create a wider channel than the primary channel. For example, a secondary channel in a 40MHz, 80MHz, 160MHz, or 80+80MHz BSS may be called a secondary 20MHz channel. In a 40MHz BSS, the secondary 20MHz channel may be a 20MHz channel adjacent to the primary 20MHz channel. In a 40MHz BSS, the secondary 20MHz channel may be a channel that combines with the primary 20MHz channel to form a 40MHz channel. In an 80MHz BSS, the secondary 20MHz channel may be a channel adjacent to the primary 20MHz channel. A secondary 20MHz channel may be a 20MHz channel adjacent to a 20MHz channel. In an 80MHz BSS, the secondary 20MHz channel may combine with the primary 20MHz channel to form a primary 40MHz channel. A secondary 20MHz channel may be a 20MHz channel adjacent to the primary 20MHz channel in a 160MHz or 80+80MHz BSS. A secondary 20MHz channel may combine with the primary 20MHz channel in a 160MHz or 80+80MHz BSS. It may also be a channel that forms the primary 40MHz channel. The secondary 40MHz channel is a channel that forms the primary 40MHz channel in an 80MHz BSS. The secondary 40MHz channel may be an adjacent 40MHz channel in a 160MHz or 80+80MHz BSS, which may be a 40MHz channel adjacent to the primary 40MHz channel to form the primary 80MHz channel. The secondary 80MHz channel may be a 160MHz or In an 80+80MHz BSS, this is an 80MHz channel that does not include the primary 20MHz channel. This is also fine. The secondary 80MHz channel can be combined with the primary 80MHz channel to produce 160MHz or The 80+80MHz channel may be configured. The secondary 160MHz channel, in a 320MHz BSS, may, together with the primary 160MHz channel, form a 320MHz channel of the 320MHz EHT BSS, and may be a 160MHz channel that does not include the primary 20MHz channel.

[0127] The non-primary channel is any 20MHz channel other than the primary 20MHz channel in the 40MHz channel, 80MHz channel, 160MHz channel, 80+80MHz channel, and 320MHz channel. It is delicious.

[0128] Figure 12 shows an example of channel bonding according to one aspect of this embodiment. In this case, 1201, 1202, 1203, 1204, 1205, 1206, 1207, and 1208 may each be 20 MHz channels. The horizontal axis of Figure 12 is frequency. This is also acceptable. Figure 12 may also show a channel configuration for a BSS operating with a 160MHz channel width. 1201 may be the primary 20MHz channel. 1201 may also be referred to as the primary channel. 1202 may be the secondary 20MHz channel. 1203 A secondary 40MHz channel may be formed from 1204, 1205, 1206, A secondary 80MHz channel may be formed from 1207 and 1208. 1202, 12 Channels 03, 1204, 1205, 1206, 1207, and 1208 are referred to as secondary channels. It may also be used.

[0129] When performing channel bonding, the STA performs a backoff procedure on the primary 20MHz channel. Alternatively, channel sensing can be performed using PIFS immediately before transmission on the secondary channel. Example For example, in Figure 12, STA transmits with a 160MHz channel width, so 1201 A backoff procedure may be performed, and for 1202, 1203, 1204, 1205, 1206, 1207, and 1208, channel sensing may be performed for the PIFS period immediately before transmission.

[0130] The Operating class is an index to a set of values ​​for radio operation in a regulated domain. It may be shown. The Operating class value is the frequency for the channel number, the available channels. The center frequency of the channel and the maximum usable channel width may be indicated. Operating class value. Channel starting frequency, Channel Spacing, Channel This may also indicate a set of channels. A channel set is a set of regulatory domains and This may be a list of valid integer channel numbers for the class. Channel Spacing uses the maximum bandwidth of one frequency segment allowed in the Operating class. The Operating class value may also be the frequency difference between the center frequencies of adjacent channels that do not overlap. The Operating class value may be transmitted in a frame. For example, the Operating class value may be transmitted in a Beacon frame. The Operating class value may be transmitted in a Probe Response frame. That's also fine. The Operating class value can also be an Operating class index.

[0131] The center frequency of the primary 20MHz channel may be determined by Channel starting frequency + 5 × dot11CurrentPrimaryChannel. dot11CurrentPrimaryChannel may be the channel number of the primary channel. The STA may determine dot11CurrentPrimaryChannel from the Operation element included in the frame received from the AP. The STA may determine dot11CurrentPrimaryChannel from the information in the Primary Channel field included in the HT Operation element. The STA may determine dot11CurrentPrimaryChannel from the Primary Channel field included in the HT Operation element. The STA may determine dot11CurrentPrimaryChannel from the information in the Primary channel field in the 6GHz Operation Information field included in the HE Operation element. The rentPrimaryChannel may be determined. For example, the STA that receives a Beacon frame from the AP Alternatively, the primary channel may be determined from the Primary Channel field of the HT operation element included in the Beacon frame. The channel starting frequency may be defined as dot11ChannelStartingFactor × 500kHz. dot11ChannelStartingFactor may be indicated by the Operating Class field.

[0132] AP may include information related to the primary channel in the operation element and transmit it in the frame. Information related to the primary channel may be the channel number of the primary channel. AP may include the channel number of the primary channel in the operation element and transmit it in the frame. For example, AP may indicate the channel number of the primary channel in the Primary channel field of the HT operation element. For example, AP may indicate the channel number of the primary channel in the Primary channel field of the HT operation element. The channel number may also be indicated in the Primary channel field within the 6GHz Operation Information field included in the HE operation element.

[0133] In channel bonding, the STA may perform a backoff procedure on the primary channel, sense the PIFS period on the secondary channels, and then transmit. An EDCA TXOP may be obtained based on the activity. The transmission bandwidth may be determined by the CCA status of nonprimary channels in the PIFS before transmission.

[0134] The PHY-CCA.indication primitive may be a primitive that indicates the current state of the medium from the PHY to the MAC entity. The PHY-CCA.indication primitive includes the STATE parameter. It is also acceptable. The PHY-CCA.indication primitive may include a channel-list parameter. The STATE parameter of the PHY-CCA.indication primitive may have one of two values: BUSY or IDLE. The PHY-CCA.indication primitive may include at least the STATE parameter. The PHY-CCA.indication primitive may include at least the channel-list parameter. The PHY-CCA.indication primitive may include at least the STATE and channel-list parameters. The STATE parameter value of the PHY-CCA.indication primitive may be BUSY if it indicates that the channel is unavailable in the PHY's evaluation of the channel. Otherwise, the STATE parameter value of the PHY-CCA.indication primitive may be IDLE. When STATE is in the IDLE state, the channel-list parameter does not exist. Type of PHY in operation If the CCA is determined by a single channel, the channel-list parameter is: Does not exist. Otherwise, the channel-list parameter may contain a set of channels that are busy. In other words, the CCA may have multiple channels If determined to be BUSY, the channel-list parameter may exist. For example, the entries for the channel-list parameter may be primary, secondary, secondary40, and secondary80. The STATE parameter may be referred to as the STATUS parameter. The STATUS parameter may be referred to as the STATE parameter.

[0135] The PHY-CCA.indication primitive may include a channel-list parameter. The channel-list parameter may include one entry. One entry is one of the entries in the set. It may be one of the above. A set of entries may be defined. The set of entries may be called channel-list parameter entries. For example, the set of entries may include primary, secondary, secondary40, secondary80, primary1, primary2, secondary2, secondary4, and secondary8.

[0136] For example, if the channel-list parameter entry of PHY-CCA.indication primitive is set to primary, it may indicate that the primary channel is busy. For example, if the channel-list parameter entry of PHY-CCA.indication primitive is set to secondary If this is the case, it may indicate that the secondary channel (secondary 20MHz channel) is busy. For example, if the entry for the channel-list parameter of PHY-CCA.indication primitive is set to secondary40, it may indicate that the secondary40 channel is busy. For example, if the entry for the channel-list parameter of PHY-CCA.indication primitive is set to secondary80, it may indicate that the secondary80 channel is busy.

[0137] The PHY-CCA.indication primitive may be generated (issued) when the channel state changes from idle to busy, or when the channel state changes from busy to idle, or when the entry in the channel-list parameter is changed. "To perform" may be synonymous with "to generate a primitive." "To generate a primitive" may be synonymous with "to issue a primitive."

[0138] When MAC receives a PHY-CCA.indication that has a channel-list parameter, it determines which channel You can determine if a channel is idle. If the channel-list parameter entry in PHY-CCA.indication is primary, you can determine that there are no idle channels. If the channel-list parameter entry in PHY-CCA.indication is secondary, the primary channel is idle. It may be determined that the primary channel and secondary 20MHz channel are idle. If the channel-list parameter entry in PHY-CCA.indication is secondary40, then the primary channel and secondary 20MHz channel are considered idle. This is acceptable if the channel-list parameter entry in PHY-CCA.indication is secondary80. The primary channel, secondary 20MHz channel, and secondary 40MHz channel are It can be considered an idol.

[0139] For example, in Figure 12, 1201 may be the primary channel. 1202 may be the secondary channel (secondary 20MHz channel). 1203 and 1204 Then, a secondary 40MHz channel may be configured. 1205, 1206, 1207, and Alternatively, a secondary 80MHz channel may be configured with 1208. That is, a bandwidth of 160MHz In Figure 12, the primary channel is 1201, the secondary channel (secondary 20MHz channel) is 1201, the secondary 40MHz channel consists of 1203 and 1204, and the secondary 80MHz channel consists of 1205, 1206, 1207, and It may also be configured as 1208. For example, STA indicates that the primary channel (1201) is busy when the channel state changes from idle to busy. The STA may issue a primitive(PHY-CCA.indication(BUSY,{primary})). When the state of a primary channel changes from busy to idle, the STA may issue a primitive(PHY-CCA.indication(IDLE,{primary})) indicating that the primary channel is idle. If the primary channel issues a primitive(PHY-CCA.indication(BUSY,{primary})) indicating that the primary channel is idle, it may be determined that there are no idle channels. STA may issue a primitive associated with the secondary channel (1202) if the primary channel is idle. STA may issue a primitive (PHY-CCA.indication(IDLE,{secondary})) indicating that the secondary channel is idle if the secondary channel (secondary 20MHz channel) is idle. STA may issue a primitive (PHY-CCA.indication(BUSY,{secondary})) indicating that the secondary channel (secondary 20MHz channel) is busy if the secondary channel is busy. PHY-CCA.indication(IDLE,{secondary}) may indicate that both the primary and secondary channels are idle. PHY-CCA.indication(BUSY,{secondary}) indicates that the primary channel is idle and the secondary channel The STA may indicate that the channel is busy. The STA may issue a primitive associated with the secondary 40MHz channel (composed of 1202 and 1204) if the primary channel and secondary 20MHz channel are idle. The STA will indicate that the secondary 40MHz channel is idle In this case, the primitive (PHY-CCA.indicati) indicates that the secondary 40MHz channel is idle. The STA may issue on(IDLE,{secondary40})). If the secondary 40MHz channel is busy, the STA may issue primitive(PHY-CCA.indication(BUSY,{secondary40})) indicating that the secondary 40MHz channel is busy. PHY-CCA.indication(IDLE,{secondary 40}) The primary channel, secondary channel, and secondary 40MHz channel are idle. It may indicate that the primary channel and secondary channel are idle, and the secondary 40MHz channel is busy. STA indicates the primary channel, the secondary 20MHz channel, and If the secondary 40MHz channel is idle, the STA may issue a primitive associated with the secondary 80MHz channel (composed of 1205-1208). If the secondary 80MHz channel is idle, the STA may issue a primitive (PHY-CCA.indication(IDLE,{secondary80})) indicating that the secondary 80MHz channel is idle. If busy, a primitive(PHY-CCA.indication(BUSY,{secondary80})) may be issued to indicate that the secondary 80MHz channel is busy. PHY-CCA.indication(IDLE,{secondary 80}) may indicate that the primary channel, secondary channel, secondary 40MHz channel, and secondary 80MHz channel are idle. PHY-CCA.indication(IDLE,{secondary 80}) may indicate that the primary channel, secondary channel, and secondary 40MHz channel are idle, and the secondary 80MHz channel is busy.

[0140] STA may determine the PHY-CCA.indication primitive in the physical layer processing unit SU3. STA Even if the PHY-CCA.indication primitive determined by the physical layer processing unit SU3 is shown to the MAC layer processing unit SU4 Good. The AP may issue the PHY-CCA.indication primitive in the physical layer processing unit AU3. The PHY-CCA.indication primitive determined in the physical layer processing unit AU3 is shown to the MAC layer processing unit AU4. That's good too.

[0141] STA with an operation channel width of W MHz is small At the very least, the start of a PPDU occupying the primary 20MHz channel is detected with a probability of a certain percentage or higher (e.g., 90% or higher), and the power of the preamble or PPDU measured within the primary 20MHz channel is... If the value is above a predetermined value (for example, -82dBm or higher), the PHY-CCA.indication(BUSY, {primary}) primitive may be issued within the aCCATime period. In other words, the STA may issue the PHY-CCA.indication(BUSY, {primary}) primitive when it receives a non-HT duplicate or PPDU above -82dBm on the primary 20MHz channel. -82dBm may be a threshold for determining whether the channel is idle or busy.

[0142] The receiver, within a period of aCCATime after the signal arrives at the receiver's antenna, will detect a difference of a predetermined value (e.g., 20 dB) below the sensitivity of the minimum modulation and coding rate on the primary 20 MHz channel. For any signal exceeding a high threshold (-62dBm), the receiver issues a PHY-CCA.indication(BUSY, {primary}) primitive. Subsequently, as long as the threshold remains exceeded, the receiver does not issue PHY-CCA.indication(BUSY,{secondary}), PHY-CCA.indication(BUSY,{secondary40}), PHY CCA.indication(BUSY,{secondary80}), or PHY-CCA.indication(IDLE) primitives. In other words, the receiver may issue a PHY-CCA.indication(BUSY, {primary}) primitive when it receives any signal exceeding -62dBm on the primary 20MHz channel. -62dBm may be a threshold used to determine whether the channel is idle or busy.

[0143] The PHY issues the PHY-CCA.indication(BUSY, {primary}) primitive if there are no conditions to issue the PHY-CCA.indication(BUSY, {secondary}) primitive, and any signal in the secondary 20 MHz channel exceeds a threshold of -62 dBm or more within aCCATime after reaching the receiver antenna in the idle operating channel widths of 40 MHz, 80 MHz, 160 MHz, and 80+80 MHz. In this case, the PHY issues the PHY-CCA.indication(BUSY, {secondary40}), PHY-CCA.indication(BUSY, {secondary80}), or PHY-CCA.indication(IDLE) primitive. No. The PHY does not have any conditions to issue the PHY-CCA.indication(BUSY, {primary}) primitive, and in idle operating channel widths of 40MHz, 80MHz, 160MHz, and 80+80MHz. If a 20MHz preamble or PPDU of -72dBm or higher is detected on the secondary 20 MHz channel with a probability of 90% or higher within the aCCAMidTime period, the PHY-CCA.indication(BUSY, {secondary}) primitive is issued. -72dBm is the threshold for determining whether the channel is idle or busy. It may also be a value.

[0144] The PHY will issue PHY-CCA.indication(BUSY, {primary}) and PHY-CCA.indication(BUSY, {secondary}) primitives when there are no conditions for them to be issued, and in an idle operating channel width of 80MHz, 160MHz, or 80+80MHz, any signal in the secondary 40 MHz channel will be issued. However, if the threshold of -59dBm or higher is exceeded within aCCATime after reaching the receiver antenna, the PHY issues the PHY-CCA.indication(BUSY, {secondary40}) primitive. In this case, the PHY does not issue the PHY-CCA.indication(BUSY, {secondary80}) primitive or the PHY-CCA.indication(IDLE) primitive. The PHY does not issue the PHY-CCA.indication(BUSY, {primary}) or PHY-CCA.indication(BUSY, {secondary}) primitive if there are no conditions for issuing the PHY-CCA.indication(BUSY, {secondary}) primitive and the PHY is idle in an 80MHz, 160MHz, or 80+80MHz operating channel width, and the 40MHz preamble or PPDU of -72dBm or higher occurs for 90% or more of the aCCAMidTime period in the secondary 40MHz channel. If detected with a certain probability, the PHY PHY-CCA.indication(BUSY, {secondary40}) primitive Issue. PHY is PHY-CCA.indication(BUSY, {primary}) and PHY-CCA.indication(BUSY, There are no conditions for issuing the {secondary}) primitive, and the idle state of 80MHz, 160MHz, Alternatively, in an operating channel width of 80+80MHz, any 20MHz subchannel of the secondary 40MHz channel has a 20MHz preamble or PPDU of -72dBm or higher, and aCCAMidTime If detected with a probability of 90% or higher within the specified period, the PHY PHY-CCA.indication(BUSY, {secondary40}) primitive is issued. -72dBm may be a threshold for determining whether the channel is idle or busy.

[0145] The PHY issues PHY-CCA.indication(BUSY,{primary}), PHY-CCA.indication(BUSY,{secondary}), and PHY-CCA.Indication (BUSY, {secondary40}) primitives when there are no conditions for such primary signals and in an idle operating channel width of 160MHz or 80+80MHz, the secondary The PHY issues the PHY-CCA.indication(BUSY, {secondary80}) primitive if any signal of -56 dBm or higher exists within the 80 MHz channel. The PHY also issues the PHY-CCA.indication(BUSY, {secondary}) primitive if there are no conditions to issue the PHY-CCA.indication(BUSY, {primary}), PHY-CCA.indication(BUSY, {secondary}), or PHY-CCA.Indication (BUSY, {secondary40}) primitive, and in an idle 160 MHz or 80+80 MHz operating channel width, if an 80 MHz preamble or PPDU of -69 dBm or higher is detected within the secondary 80 MHz channel with a probability of 90% or higher within the aCCAMidTime period. The PHY does not have the conditions to issue PHY-CCA.indication(BUSY,{primary}), PHY-CCA.indication(BUSY,{secondary}), or PHY-CCA. Indication (BUSY, {secondary40}) primitives, and in an idle 160MHz or 80+80MHz operating channel width, any 40MHz subchannel of the secondary 80MHz channel has a 40MHz preamble or PPDU of -72 dBm or higher, and aCCAMidTime If detected with a probability of 90% or more within the specified period, PHY-CCA.indication(BUSY, {secondary80}) The PHY issues a primitive. The PHY issues PHY-CCA.indication(BUSY,{primary}), PHY-CCA.indication(BUSY,{secondary}), and PHY-CCA. Indication (BUSY, {secondary40}) primitives when there are no conditions for such a primitive to be issued, and in an idle 160MHz or 80+80MHz operating channel width, a 20MHz preamble or PPDU is detected at -72dBm or higher with a probability of more than 90% within the aCCAMidTime period in any 20MHz subchannel of the secondary 80MHz channel. In this case, the PHY-CCA.indication(BUSY, {secondary80}) primitive is issued. Here, -56dBm, -69dBm, and -72dBm are thresholds for determining whether the channel is idle or busy. That's fine.

[0146] The threshold may be compared to the signal level of the receiving antenna. In STA, the threshold is compared The signal level may be the signal level received by the antenna unit SU1. The signal level compared to the threshold may be the level of the signal received by the antenna unit AU1. stomach.

[0147] STA with an operation channel width of W MHz is small At the very least, the start of a PPDU occupying the primary 20MHz channel is detected with a probability of a certain percentage or higher (e.g., 90% or higher), and the power of the preamble or PPDU measured within the primary 20MHz channel is... If the signal is above a predetermined value (e.g., -82 dBm or higher), a PHY-CCA.indication with the STATUS parameter set to BUSY may be issued within the aCCATime period. In other words, the STA may issue a PHY-CCA.indication(BUSY) primitive when it receives a preamble or PPDU exceeding -82 dBm on the primary 20 MHz channel. The receiver may issue a PHY-CCA.indication with the STATUS parameter set to BUSY for any signal that exceeds a threshold (-62 dBm) on the primary 20 MHz channel by a predetermined value (e.g., 20 dB) higher than the sensitivity of the minimum modulation and coding rate, within the aCCATime period after the signal arrives at the receiver's antenna. If the operation channel width is 20 MHz or greater, the channel-list parameter may exist and be set to {primary}. While the threshold remains exceeded following the indication, the receiver does not issue a PHY-CCA.indication primitive with the STATUS parameter set to IDLE or a PHY-CCA.indication with a modified channel-list parameter.

[0148] PHY issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY. In the absence of any conditions and in an idle state, with operating channel widths of 40MHz, 80MHz, 160MHz, and 80+80MHz, any signal within the secondary 20 MHz channel reaches the receiver's antenna. If the threshold of -62dBm or higher is exceeded within aCCATime, the STATUS parameter is set to BUSY and the channel-list parameter is set to {secondary} in the PHY-CCA.indication primitive. It issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY. There are no conditions for issuing a signal, and in idle operating channel widths of 40MHz, 80MHz, 160MHz, and 80+80MHz, a 20MHz preamble of -72dBm or higher is detected on the secondary 20MHz channel. Alternatively, if a PPDU is detected with a probability of 90% or more within the aCCAMidTime period, the receiver issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary}. While the threshold remains exceeded following the indication, the receiver issues a PHY-CCA.indication primitive with the STATUS parameter set to IDLE, or with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40} or {secondary 80}. The set PHY-CCA.indication primitive will not be issued.

[0149] PHY issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY. If no conditions exist, and no PHY-CCA.indication primitive exists with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary}, then in the idle operating channel widths of 80MHz, 160MHz, and 80+80MHz, within the secondary 40 MHz channel... Any signal exceeding a threshold of -59 dBm within aCCATime after reaching the receiver's antenna In this case, a PHY-CCA.indication primitive is issued with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40}. PHY sets the STATUS parameter to BUSY If there are no conditions to issue the PHY-CCA.indication primitive set to BUSY, and no PHY-CCA.indication primitive exists with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary}, then in the idle operating channel widths of 80MHz, 160MHz, and 80+80MHz, if a 40MHz preamble or PPDU of -72dBm or higher is detected with a probability of 90% or higher within the aCCAMidTime period, the PHY will issue a PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40}. If a PHY-CCA.indication primitive with ameter set to {secondary} does not exist, then eye In the dollar state, with operating channel widths of 80MHz, 160MHz, and 80+80MHz, any 20MHz subchannel of the secondary 40MHz channel has a 20MHz preamble or PPDU of -72dBm or higher. However, if detection occurs with a probability of 90% or more within the aCCAMidTime period, the receiver issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40}. While the threshold remains exceeded following the indication, the receiver issues a PHY-CCA.indication primitive with the STATUS parameter set to IDLE, or a PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 80}. No such issue will be issued.

[0150] PHY issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY. Set the conditions and STATUS parameter to BUSY, set the channel-list parameter to {secondary}, and set the PHY-CCA.indication primitive and STATUS parameter to BUSY. If no PHY-CCA.indication primitive exists with the channel-list parameter set to {secondary 40}, and any signal greater than -56dBm exists within the secondary 80 MHz channel in an idle 160MHz or 80+80MHz operating channel width, the STATUS parameter is set to BUSY and a PHY-CCA.indication primitive with the channel-list parameter set to {secondary 80} is issued. If the conditions for issuing a PHY-CCA.indication primitive with the STATUS parameter set to BUSY are not met, and if there is no PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary}, and no PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40}, and if, in an idle operating channel width of 160MHz or 80+80MHz, an 80 MHz preamble or PPDU of -69 dBm or higher is detected in the secondary 80 MHz channel with a probability of 90% or higher within the aCCAMidTime period, the PHY will issue a PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 80}.The PHY issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY, and if there is no PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary}, and no PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40}, then in an idle operating channel width of 160MHz or 80+80MHz, any 40MHz subchannel of the secondary 80MHz channel. If a 40MHz preamble or PPDU of -72 dBm or higher is detected in a channel with a probability of 90% or higher within the aCCAMidTime period, the PHY issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 80}. The PHY issues a PHY-CCA.indication primitive with the STATUS parameter set to BUSY, and if there are no PHY-CCA.indication primitives with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary}, or PHY-CCA.indication primitives with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 40}, then the PHY will issue a PHY-CCA.indication primitive. If, in an idle operating channel width of 160MHz or 80+80MHz, a 20MHz preamble or PPDU is detected at -72dBm or higher with a probability of more than 90% within the aCCAMidTime period on any 20MHz subchannel of the secondary 80MHz channel, then a PHY-CCA.indication primitive is issued with the STATUS parameter set to BUSY and the channel-list parameter set to {secondary 80}.

[0151] STA with an operation channel width of W MHz is small At the very least, the start of a PPDU occupying the primary 20MHz channel is detected with a probability of a certain percentage or higher (e.g., 90% or higher), and the power of the preamble or PPDU measured within the primary 20MHz channel is... If the value is above a predetermined value (for example, -82dBm or higher), a PHY-CCA.indication with the STATUS parameter set to BUSY may be issued within the aCCATime period. In other words, if the STA receives a preamble or PPDU exceeding -82dBm on the primary 20MHz channel, it will issue a PHY-CCA.indication(BUSY) primi You may issue a tive. If the operating channel width is greater than 20MHz, Channel-list The parameter exists and {primary} may be set. The receiver is connected to the receiver's antenna. Within the aCCATime period after the signal arrives, a PHY-CCA.indication with the STATUS parameter set to BUSY may be issued for any signal exceeding the -62dBm threshold on the primary 20 MHz channel.

[0152] In this invention, an NPCA (Non Primary Channel Access) primary channel may be defined. An NPCA primary channel is accessed while the primary channel is busy. It may be a channel. The NPCA primary channel may be a channel accessed while the primary channel is busy due to OBSS traffic. The NPCA primary channel may be referred to by something other than the NPCA primary channel. For example, the NPCA primary channel may be referred to as the Secondary primary channel, etc. Access may be a CCA. Access may be a backoff procedure. Access may be an EDCA. For example, while the primary channel is busy is the period during which NAV is set (maintained) on the primary channel. This may also be the case. For example, while the primary channel is busy, this may be the period during which no backoff procedure is performed on the primary channel. For example, while the primary channel is busy, This may also refer to the period indicated by the received PPDU, such as "while the primary channel is busy." This can also be referred to as "when the primary channel is busy." "While the primary channel is busy" can be rephrased as "when the primary channel is busy."

[0153] In this invention, AP and / or STA perform NPCA (Non Primary Channel Access). NPCA may also be an action to access other channels while the primary channel is busy due to OBSS traffic. For example, OBSS traffic may be a PPDU received from OBSS. OBSS traffic may also be an inter-BSS PPDU. OBSS traffic may be a NAV configured. OBSS traffic may be a basic NAV configured. OBSS traffic may also be an OBSS frame exchange. APs and / or STAs may perform a backoff procedure on other channels while the primary channel is busy due to OBSS traffic. For example, a channel on which a backoff procedure is performed while the primary channel is busy due to OBSS traffic may be called the NPCA primary channel, secondary primary channel, etc. The name of the channel on which a backoff procedure is performed while the primary channel is busy may be a name other than those mentioned above. In other words, APs and / or STAs may perform a backoff procedure on the NPCA primary channel when the primary channel becomes busy due to OBSS traffic. AP and / or STA may perform a backoff procedure on the NPCA primary channel while NAV is configured on the primary channel by the OBSS PPDU. The AP and / or STA may transmit on one or more channels that include the NPCA primary channel but do not include the primary channel once the backoff procedure is complete on the NPCA primary channel. The AP and / or STA must move to the primary channel before the NAV period ends. A switch may be performed. The AP may send information related to NPCA primary channel access in a frame. The STA may determine the action related to NPCA primary channel access based on the frame received from the AP.

[0154] In other words, the NPCA primary channel is accessed while the primary channel is busy. It may also be a channel for that purpose. The NPCA primary channel may also be a channel for channel access while NAV is set on the primary channel. The channel may be a channel for channel access while the basic NAV is set on the primary channel. The NPCA primary channel may be a channel for channel access while the primary channel is busy by the OBSS PPDU. The NPCA primary channel may be a channel for channel access while the primary channel is busy by the OBSS PPDU This may be a channel for accessing the network. The time while the NAV is set may be referred to as the time while the NAV is maintained. Channel access may be a backoff procedure. Channel access may be EDCA. Channel access may be EDCAF. Channel access may also be via CCA.

[0155] AP includes an information element containing information related to Non Primary Channel Access. A frame may be sent. When performing Non Primary Channel Access, the AP sends a frame containing an information element that includes information related to Non Primary Channel Access. It is also possible. The AP may include a frame containing an information element that includes information related to Non Primary Channel Access in order to indicate to the STA in the BSS whether Non Primary Channel Access is enabled or disabled. You may send a message. The AP will not perform Non Primary Channel Access in its BSS. If not applicable, the transmitted frame does not need to include an information element containing information related to Non Primary Channel Access. For example, information related to Non Primary Channel Access An information element containing information may be called an NPCA operation element. For example, an information element containing information related to Non Primary Channel Access may be called a UHR operation element. An information element containing information related to Non Primary Channel Access may be referred to in ways other than those mentioned above. An Element ID may be set for the NPCA operation element. An Element ID may be set for the UHR operation element. This is also acceptable. For example, an NPCA operation element may indicate information for Non Primary Channel Access. An NPCA operation element may consist of one or more fields. An NPCA operation element may include a field indicating the Element ID. An NPCA operation element may include a field indicating whether Non Primary Channel Access is enabled or disabled. An NPCA operation element may indicate information for Non Primary Channel Access. A field may be included to indicate the location of the primary channel. NPCA operation The element includes a field to indicate the channel width for Non Primary Channel Access. It may be included. Fields other than those mentioned above may be included in the NPCA operation element. For example, if the STA receives a frame containing an NPCA operation element from the AP, it may perform Non Primary Channel Access. If the STA receives a frame containing an NPCA operation element from the AP, it may perform Non Primary Channel Access using the information indicated in the fields of the NPCA operation element. The STA receives the NPCA operation element from the AP. If a frame containing the element is received and indicates that Non Primary Channel Access is enabled, Non Primary Channel Access may be performed. The STA receives the NPCA operation element from the AP. If a frame containing [this] is not received, Non Primary Channel Access will not be performed. STA is AP If a frame containing an NPCA operation element is received and it indicates that Non Primary Channel Access is disabled, Non Primary Channel Access will not be performed. For example, a UHR operation element may contain information for controlling UHR STA. For example, a UHR operation element may contain information for Non Primary Channel Access. A UHR operation element may consist of one or more fields. A UHR operation element may include a field indicating the Element ID. A UHR operation element checks whether information related to Non Primary Channel Access is included in the UHR operation element. The UHR operation element may include fields indicating whether Non Primary Channel Access is enabled or disabled. The UHR operation element may include fields indicating the location of the NPCA primary channel for Non Primary Channel Access. The UHR operation element may include fields indicating the location of the NPCA primary channel for Non Primary Channel Access if it indicates that the UHR operation element contains information related to Non Primary Channel Access. The UHR operation element may include fields indicating the channel width for Non Primary Channel Access. The UHR operation element may include fields indicating the channel width for Non Primary Channel Access if it indicates that the UHR operation element contains information related to Non Primary Channel Access. Fields other than those mentioned above may be included in the UHR operation element. For example, if the STA receives a frame containing a UHR operation element from the AP, it may perform Non Primary Channel Access. If a frame containing a UHR operation element is received, Non Primary Channel Access may be performed using the information indicated in the fields of the UHR operation element. If the STA receives a frame containing a UHR operation element from the AP and the UHR operation element indicates that Non Primary Channel Access is enabled, Non Primary Channel Access may be performed. If the STA does not receive a frame containing a UHR operation element from the AP, In all cases, Non Primary Channel Access will not be performed. If the STA receives a frame from the AP containing a UHR operation element and it indicates that Non Primary Channel Access is disabled, it will not perform Non Primary Channel Access. The STA will check if the received UHR operation element contains information related to Non Primary Channel Access. If this is indicated, Non Primary Channel Access may be performed. The STA will receive information related to Non Primary Channel Access in the UHR operation element. If it indicates that it is not included, Non Primary Channel Access will not be performed.

[0156] Information related to Non Primary Channel Access may include information indicating the location of at least the NPCA primary channel. Information related to Non Primary Channel Access may also include information indicating the location of the NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel. AP includes at least the NPCA primary channel in its operating channel width. In addition, a frame containing information related to Non Primary Channel Access may be sent. STA If the frame received from the AP contains information related to Non Primary Channel Access, it is determined that at least one NPCA primary channel exists within the operating channel width. It is permissible for the STA to perform Non Primary Channel Access if the frame received from the AP contains information related to Non Primary Channel Access. If the frame received from the AP does not contain information related to Non Primary Channel Access, the STA may determine that there is no NPCA primary channel in the operating channel width. In other words, the STA receives information related to Non Primary Channel Access in the frame received from the AP. If no information is included, you may decide not to perform Non-Primary Channel Access.

[0157] STA or AP is the primary channel, and if idle, it includes one or more primary channels. Transmission may be performed on the channel. If the primary channel is busy, the STA or AP may perform sensing on the NPCA primary channel, and if the NPCA primary channel is idle, it may transmit on one or more channels that include the NPCA primary channel but do not include the primary channel. The STA or AP may perform sensing on the NPCA primary channel if the primary channel is busy due to OBSS traffic, and transmit on one or more channels that include the NPCA primary channel but do not include the primary channel if the NPCA primary channel is idle. For example, OBSS traffic may be OBSS PPDU. The STA or AP may transmit on one or more channels that include the NPCA primary channel but do not include the primary channel. The STA or AP may receive on one or more channels that include the primary channel. AP does not include a primary channel, but includes at least one NPCA primary channel or Reception may be performed on multiple channels.

[0158] STA or AP may transmit using multiple channels in NPCA. When STA or AP transmits using multiple channels in NPCA, STA or AP performs a backoff procedure on the NPCA primary channel and immediately before transmission on the NPCA secondary channel. Sensing may be performed for a fixed period, followed by transmission. The NPCA secondary channel may be a channel other than the NPCA primary channel used for transmission using multiple channels in NPCA. NPCA secondary channels may be defined as an NPCA secondary 20MHz channel, an NPCA secondary 40MHz channel, and an NPCA secondary 80MHz channel. The NPCA secondary 20MHz channel may be a 20MHz channel related to the NPCA primary channel. Good. For example, if STA or AP transmits with a bandwidth of 40 MHz in NPCA, NPCA pri You may also transmit using the Mary channel and the NPCA secondary 20MHz channel. The NPCA secondary 40MHz channel is a 40MHz channel related to the NPCA primary channel. That's fine. For example, if an STA or AP transmits with an 80MHz bandwidth in NPCA, it may use the NPCA primary channel, the NPCA secondary 20MHz channel, and the NPCA secondary 40MHz channel for transmission. The NPCA secondary 40MHz channel has two 20MHz channels. It may consist of channels. The NPCA secondary 80MHz channel may be an 80MHz channel related to the NPCA primary channel. For example, if an STA or AP transmits with a bandwidth of 160MHz in the NPCA, it may transmit using the NPCA primary channel, the NPCA secondary 20MHz channel, the NPCA secondary 40MHz channel, and the NPCA secondary 80MHz channel. The NPCA secondary 80MHz channel consists of four 20MHz channels. It is also acceptable to refer to the NPCA secondary channel by a different name. For example, the NPCA secondary channel may be called a secondary secondary channel. Good. The NPCA secondary 20MHz channel may be referred to in ways other than "NPCA secondary 20MHz channel". For example, the NPCA secondary 20MHz channel may be referred to as the secondary secondary 20MHz channel. The NPCA secondary 40MHz channel may be referred to in ways other than "NPCA secondary 40MHz channel". For example, the NPCA secondary 40MHz channel may be referred to as the secondary secondary 40MHz channel. The NPCA secondary 80MHz channel is NPCA It may be referred to by a name other than "secondary 80MHz channel." For example, NPCA secondary 80MHz The channel may also be called the secondary secondary 80MHz channel. In NPCA, This may also apply if channel access is being performed via the NPCA primary channel.

[0159] Figure 13 shows an example of a backoff procedure on an NPCA primary channel according to one aspect of this embodiment. 1301, 1302, 1303, 1304, 1305, 1306, 1307, and 1308 may each be 20 MHz channels. Figure 13 may also show an STA or AP operating with a 160 MHz channel width. 1301 may be the primary channel. 1306 may be the NPCA primary channel. 1309 may be the STA or This could be a frame received by the AP or a frame transmitted by another STA or AP. 1309 could also be a frame belonging to an OBSS received by the STA or AP or a frame transmitted by another STA or AP. For example 1309 may be an RTS frame. 1309 may be a CTS frame. 1309 may be a Data frame. 1309 may be a PPDU. 1309 may be a PPDU received from an STA or AP belonging to OBSS. 1301 may be while the primary channel is busy. 1310 may be during the period when the NAV is set (maintained). Alternatively, 1311 may be a backoff procedure (backoff counter, contention window, DCF, EDCA). 1312 may be a PPDU transmission. For example, when an STA or AP receives 1309 at 1301, it may set 1310 on 1301 for the period indicated in the Duration field of 1309. The STA will then set 1310 on 1301. Then, it is also possible to migrate to 1306. When STA migrates to 1306, 1311 will be used in 1306. You may start. STA may perform 1312 once 1311 is complete. Here, for example If STA performs the operation shown in Figure 13, then STA is 204 in Figure 2, and 1309 is in Figure 2. It may also be a frame transmitted by 207. Figure 13 is a diagram of an AP operating at 160MHz. It is also possible. For example, if the AP performs the operation in Figure 13, the AP is performing the operation of 202 in Figure 2, and 1309 may be a frame transmitted by 207. 1312 may be transmitted using multiple channels. For example, 1312 may be a transmission with a channel width of 80 MHz transmitted using 1308, 1307, 1306, and 1305. Here, 1308, 1307, and 1305 may be NPCA secondary channels. The 80 MHz transmission may also be a transmission using the NPCA primary channel of 1306, the NPCA secondary 20 MHz channel of 1305, and the NPCA secondary 40 MHz channel consisting of 1307 and 1308. In other words, the backoff procedure is performed at 1301. In that case, 1305, 1306, 1307, and 1308 will use the secondary 80MHz channel. It may also be a constituent channel. In Non Primary Channel Access, at 1306, When performing the backoff procedure, 1305 may be the NPCA secondary 20MHz channel, and 1307 and 1308 may be channels that constitute the NPCA secondary 40MHz channel. AP is operating channel width and 1305 is the NPCA secondary 20MHz channel. 1305 is the NPCA primary channel, and 1307 and 1308 are NPCA secondary channels. It may be determined that it is a channel that constitutes a 40MHz channel and notify the STA in the frame. The STA will determine from the frame received from the AP that 1305 in the Operating channel width is the NPCA secondary 20MHz channel, 1305 is the NPCA primary channel, and 1307 and 1 308 may be determined to be a channel that constitutes the NPCA secondary 40MHz channel.

[0160] NPCA is at least NPCA primary while the primary channel is busy due to OBSS traffic. Channel Access (CCA) and / or Receiving on one or more channels, including channel This may be an operation in which a signal and / or transmission is performed. In NPCA, this may be when channel access and / or reception and / or transmission is performed on one or more channels, including at least the NPCA primary channel, while the primary channel is busy due to OBSS traffic. In NPCA, this may be when NPCA is being performed or while NPCA is being performed. While NPCA is not being performed, this may include at least the primary channel. This may be a period during which channel access and / or reception and / or transmission is performed on one or more channels. If NPCA is not performed, then at least the primary channel This may include channel access and / or reception and / or transmission on one or more channels.

[0161] STA may determine the channel frequency. AP may determine the channel frequency. Good. To determine the channel frequency, use the primary channel (primary 20MHz channel). and / or secondary 20MHz channel and / or secondary 40MHz channel and / or secondary 80MHz channel and / or secondary 160MHz channel and / or Alternatively, this may involve determining (defining) the center frequencies of the NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel. Determining the channel frequency is the primary This may also involve determining (defining) the locations of the primary 20MHz channel and / or secondary 20MHz channel and / or secondary 40MHz channel and / or secondary 80MHz channel and / or secondary 160MHz channel and / or NPCA primary channel and / or NPCA secondary 20MHz channel and / or NPCA secondary 40MHz channel and / or NPCA secondary 80MHz channel.

[0162] The channel frequency may also be the channelization. In other words, determining the channel frequency may also be the channelization determination. Determination of the channel frequency in this embodiment. The channelization method may be determined by the method used.

[0163] f c,idx0This may be dot11CurrentChannelCenterFrequencyIndex0. dot11CurrentChannelCenterFrequencyIndex0 may indicate the channel center frequency for 20MHz, 40MHz, 80MHz, or 160MHz channels. dot11CurrentChannelCenterFrequencyIndex0 may indicate the center frequency of frequency segment 0, which includes the primary channel, for an 80+80MHz channel. In other words, f c,idx0 This value may represent the channel center frequency for 20MHz, 40MHz, 80MHz, or 160MHz channels, and may also represent the center frequency of the frequency segment including the primary channel for 80+80MHz channels.

[0164] f c,idx1 This may be dot11CurrentChannelCenterFrequencyIndex1. dot11CurrentChannelCenterFrequencyIndex1 may indicate the center frequency of frequency segment 1 that does not include the primary channel for an 80+80MHz channel. In other words, f c,idx1 This value may also represent the center frequency of frequency segment 1, which does not include the primary channel, for an 80+80MHz channel.

[0165] f P20,idx This could be dot11CurrentPrimaryChannel. dot11CurrentPrimaryChannel may indicate the position of the primary 20MHz channel. That is, fP20,idx f may be a value indicating the position of the primary 20MHz channel. CH,start is dot11ChannelStartingFactor ×500kHz is also acceptable. CH,start This may be the channel starting frequency. The channel starting frequency may be dot11ChannelStartingFactor × 500kHz. dot11ChannelStartingFactor may be indicated by the Operating Class field. dot11CurrentChannelWidth may indicate the channel width. dot11CurrentChannelWidth is configurable. The values ​​may be for 20MHz, 40MHz, 80MHz, 160MHz, and 80+80MHz channels.

[0166] dot11CurrentChannelWidth may be notified by an information element. dot11CurrentChannelWidth may be notified by a VHT operation element. dot11CurrentChannelWidth may be notified by an HE operation element. dot11CurrentChannelWidth may be notified in the VHT Operation Information field of a VHT operation element. dot11CurrentChannelWidth may be notified in the VHT Operation Information field of an HE operation element , may be notified. dot11CurrentChannelWidth may be notified in the 6GHz Operation Information field of the HE operation element. dot11CurrentChannelWidth may be notified in the Channel Width subfield included in the VHT Operation Information field. dot11CurrentChannelCenterFrequencyIndex0 may be notified in the information element. dot11CurrentChannelCenterFrequencyIndex0 is notified in the VHT operation element. This is also acceptable. dot11CurrentChannelCenterFrequencyIndex0 may be an HE operation element, and may be notified. dot11CurrentChannelCenterFrequencyIndex0 is a VHT operation element It may be notified in the VHT Operation Information field. dot11CurrentChannelCenterFrequencyIndex0 may be notified in the VHT Operation Information field of the HE operation element. dot11CurrentChannelCenterFrequencyIndex0 may be notified in the 6GHz Operation Information field of the HE operation element. dot11CurrentChannelCenterFrequencyIndex0 may be notified in Channel Center FrequencySegment 0 included in the VHT Operation Information field. dot11CurrentChannelCenterFrequencyIndex1 may be notified in the information element. dot11CurrentChannelCenterFrequencyIndex1 is It may also be notified in the VHT operation element. dot11CurrentChannelCenterFrequencyIndex1 may also be notified in the HE operation element. dot11CurrentChannelCenterFrequencyIndex1 is notified in the VHT Operation Information field of the VHT operation element. It may also be indicated in the VHT Operation Information field of the HE operation element. dot11CurrentChannelCenterFrequencyIndex1 may also be indicated in the 6GHz Operation Information field of the HE operation element. It may also be indicated in Channel Center Frequency Segment 1 included in the VHT Operation Information field.

[0167] The STA may receive a frame transmitted from the AP with the wireless transceiver unit SU6 and determine the channel frequency with the MAC layer processing unit SU4 or the frame processing unit SU7. The STA may receive a frame containing information about the channel frequency transmitted from the AP with the wireless transceiver unit SU6 and determine the channel frequency with the MAC layer processing unit SU4 or the frame processing unit SU7. The AP may determine the channel frequency with the MAC layer processing unit AU4 or the frame processing unit AU7 and transmit a frame containing information about the channel frequency with the wireless transceiver unit AU6.

[0168] Information regarding channel frequency is available in dot11CurrentChannelCenterFrequencyIndex0 and and / or dot11Current ChannelCenterFrequencyIndex1 and / or dot11CurrentChannelWidth and / or dot11CurrentPrimaryChannel and / or dot11ChannelStart Information such as ingFactor may also be included. Other information besides that mentioned above may also be related to channel frequency.

[0169] When dot11CurrentChannelWidth is 20MHz, f P20,idx is, f c,idx0 It may also be the case that when dot11CurrentChannelWidth is 20MHz, f P20,idx =f c,idx0 This may also be the case. When dot11CurrentChannelWidth is greater than 20MHz, f P20,idx and f c,idx0 The relationship is f P20,idx =f c,idx0 -4·(N 20MHz / 2-n p20 ) + 2 is also acceptable. 20MHz If dot11CurrentChannelWidth indicates 40MHz, then it may be 2. 20MHz If dot11CurrentChannelWidth indicates 80MHz or 80+80MHz, then it may be 4. 20MHz If dot11CurrentChannelWidth indicates 160MHz, then it may be 8. p20 is 0 or greater than N 20MHz Integers in the range of -1 or less That's fine.

[0170] When dot11CurrentChannelWidth is 40MHz, 80MHz, 160MHz, or 80+80MHz, the primary 20MHz channel is f CH,start +5 × f P20,idx It may also be a channel with a bandwidth of 20 MHz centered around MHz. When dot11CurrentChannelWidth is 40 MHz, 80 MHz, 160 MHz, or 80+80 MHz, the secondary 20 MHz channel is f CH,start +5 × f S20,idx A channel with a bandwidth of 20 MHz centered around MHz is also acceptable. S20,idx is, n p20 If f is an even number, P20,idx +4 That's fine. f S20,idx is, n p20 If f is an odd number, P20,idx -4 is also acceptable.

[0171] When dot11CurrentChannelWidth is 80MHz, 160MHz, or 80+80MHz, primary 40MHz channel is f CH,start +5 × f P40,idx It was a channel with a bandwidth of 40 MHz centered around MHz. It is also acceptable. When dot11CurrentChannelWidth is 80MHz, 160MHz, or 80+80MHz, the secondary 40MHz channel is f CH,start +5 × f S40,idx A 40MHz bandwidth centered around MHz It may also be a channel. P40,idx is, f P40,idx =f c,idx0 -8·(N 20MHz / 4-n p40 ) + 4 is also acceptable. S40,idx is, n p40 If f is an even number, P40,idx You can also refer to +8. S40,idx teeth , n p40 If f is an odd number,P40,idx It may be -8. n p40 may be FLOOR(n p20 / 2). That is, n may be the floor function of n p40 / 2. For example, n p20 may be the floor function of n p40 / 2. For example, n p20 may be the largest integer not exceeding n p20 / 2. For example, when the value of n p20 is 5, n / 2 is 2.5, and p20 the value of FLOOR(n

[0172] When dot11CurrentChannelWidth is 160 MHz, the primary 80 MHz channel may be a channel with a bandwidth of 80 MHz centered on f CH,start +5 ×f P80,idx MHz. When dot11CurrentChannelWidth is 160 MHz, the secondary 80 MHz channel may be a channel with a bandwidth of 80 MHz centered on f CH,start +5×f S80,idx MHz. f P80,idx may be f P80,idx =f c,idx0 -16·(N 20MHz / 8 - n p80 ) + 8. f S80,idx may be n p80 when n is even, f P80,idx +16. f S80,idx may be n p80 when n is odd, f P80,idx -16. n p80 may be FLOOR(n p20 / 4). That is, n p80 may be the floor function of n p20 / 4. For example, n p80 may be the largest integer not exceeding n p20 / 4. For example, when the value of n p20 is 5, n p20 / 4 is 1.25, and FLOOR(n p20 The value of ( / 4) may be 1.

[0173] When dot11CurrentChannelWidth is 80+80MHz, the primary 80MHz channel is f CH,start +5 × f P80,idx It is a channel with a bandwidth of 80 MHz centered around MHz, f P80,idx is, f c,idx0 in It may exist. When dot11CurrentChannelWidth is 80+80MHz, the secondary 80MHz channel is, f CH,start +5 × f S80,idx It is a channel with a bandwidth of 80 MHz centered around MHz, f S80,idx is, f c,idx1 That's fine.

[0174] f c,idx0 This may be dot11EHTCurrentChannelCenterFrequencyIndex0. dot11EHTCurrentChannelCenter FrequencyIndex0 may indicate the channel center frequency for 20MHz, 40MHz, 80MHz, 160MHz, and 320MHz channels. The range of the value of dot11EHTCurrentChannelCenterFrequencyIndex0 may be 1 to 13 for 2.4GHz, 1 to 200 for 5GHz, and 1 to 233 for 6GHz. P20,idx This may be dot11CurrentPrimaryChannel. dot11CurrentPrimaryChannel may indicate the position of the primary 20MHz channel. The range of values ​​for dot11CurrentPrimaryChannel is relative to 2.4GHz. For GHz, the range may be 1 to 13, 1 to 200 for 5 GHz, and 1 to 233 for 6 GHz. In other words, fP20,idx f may be a value indicating the position of the primary 20MHz channel. CH,start This may be dot11ChannelStartingFactor × 500kHz. dot11ChannelStartingFactor may be represented by the Operating Class field. dot11ChannelStartingFactor is channel starting frequency f CH,start It may be used to define the channel width. dot11EHTCurrentChannelWidth may indicate the channel width. The configurable values ​​for dot11EHTCurrentChannelWidth may be 20MHz, 40MHz, 80MHz, 160MHz, and 320MHz channels.

[0175] dot11EHTCurrentChannelWidth may be notified in operation information. dot11EHTCurrentChannelWidth may be notified in the EHT operation element. dot11EHTCurrentChannelWidth may be notified in the EHT operation Information field of the EHT operation element. It is also possible that dot11EHTCurrentChannelWidth is notified in a field within the Control subfield of the EHT operation Information field. dot11EHTCurrentChannelWidth is also notified in the Channel Width field within the Control subfield. dot11EHTCurrentChannelCenterFrequencyIndex0 is also notified in the operation information. dot11EHTCurrentChannelCenterFrequencyIndex0 is also notified in the EHT operation element. dot11EHTCurrentChannelCenterFrequencyIndex0 is also notified in the EHT operation Information field of the EHT operation element. dot11EHTCurrentChannelCenterFrequencyIndex0 is also notified in the CCFS0 subfield of the EHT operation Information field.

[0176] When dot11EHTCurrentChannelWidth is 20MHz, f P20,idx is, f c,idx0 That's fine. In other words, when dot11EHTCurrent ChannelWidth is 20MHz, f P20,idx =f c,idx0 It may also be the case that when dot11EHTCurrentChannelWidth is 40MHz, 80MHz, or 160MHz, f P20,idx oh call f c,idx0 The relationship is f P20,idx =f c,idx0 -4·(N 20MHz / 2-n p20 ) + 2 is also acceptable. When dot11EHTCurrentChannelWidth is 320MHz, f P20,idx and f c,idx0 The relationship is fP20,idx =f c,idx0 -4·(N 20MHz / 2-n p20 ) + 2 is also acceptable. Here, N 20MHz is 16 That's also fine. In other words, N 20MHz n = 16 is also acceptable. p20 This corresponds to the primary 20MHz channel with dot11EHTCurrentChannelCenterFrequencyIndex0 and dot11EHTCurrentChannelWidth values. It may also be an integer indicating the position of n. p20 The range is 0 to N 20MHz It may be -1 or less. When dot11EHTCurrentChannelWidth is 40MHz, 80MHz, 160MHz, or 320MHz, f P20,idx and f S20,idx The relationship is n p20 If f is an even number, S20,idx =f P20,idx +4, n p20 If f is an odd number, S20,idx =f P20,idx -4 is also acceptable. When dot11EHTCurrentChannelWidth is 80MHz, 160MHz, or 320MHz, f P40,idx and f c,idx0 The relationship is f P40,idx =f c,idx0 -8·(N 20MHz / 4-n p40 ) + 4, and f P40,idx and f S40,idx The relationship is n p40 If f is an even number, S40,idx =f P40,idx +8, n p40 If f is an odd number, S40,idx =f P40,idx -8 is also acceptable. When dot11EHTCurrentChannelWidth is 160MHz or 320MHz, f P80,idx oh call f c,idx0 The relationship is f P80,idx =f c,idx0 -16·(N20MHz / 8-n p80 ) + 8, and f P80,idx and f S80,idx The relationship is n p80 If f is an even number, S80,idx =f P80,idx +16, n p80 If f is an odd number, S80,idx =f P80,idx It may also be -16. When dot11CurrentChannelWidth is 320MHz, the primary 160MHz channel is f CH,start +5 × f P160,idx The 160MHz band is centered around MHz. It may also be a channel with bandwidth. When dot11CurrentChannelWidth is 320MHz, the secondary 160MHz channel is f CH,start +5 × f S160,idx A 160MHz bandwidth centered around MHz It may also be a channel. P160,idx is, f P160,idx =f c,idx0 -32·(N 20MHz / 16-n p160 ) + 16 is also acceptable. S160,idx is, n p160 If f is an even number, P160,idx +32 is also acceptable. S160,idx is, n p160 If f is an odd number, P160,idx -32 is also acceptable. p160 is FLOOR(n p20 It may also be / 8). In other words, n p80 is, n p20 The floor function could also be n p80 is, n p20 It may also be the largest integer not exceeding / 8. For example, n p20 If the value of n is 8, p20 / 8 is 1, and FLOOR(n p20 The value of ( / 8) may be 1.

[0177] STA is f P20,idxand / or f c,idx0 and / or f c,idx1 and / or f CH,start and / or channel width (dot11CurrentChannelWidth) and / or f S20,idx and / or f P40,idx and / or f S40,idx and / or f P80,idx and / or f S80,idx and / or f P160,idx and / or f S160,idx You may use this to determine (define) the center frequencies of the NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel.

[0178] AP is f P20,idx and / or f c,idx0 and / or f c,idx1 and / or f CH,start and / or channel width (dot11CurrentChannelWidth) and / or f S20,idx and / or f P40,idx and / or f S40,idx and / or f P80,idx and / or f S80,idx and / or f P160,idx and / or f S160,idx You may use this to determine (define) the channels for the NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel.

[0179] STA or AP is at least f c , idx0Using NPCA primary channel and / or NPCA secondary 20MHz channel and / or NPCA secondary 40MHz channel and / or Alternatively, the channel of the NPCA secondary 80MHz channel may be determined (defined). STA or AP is at least f c , idx0 and f P20 , idx Use this to determine the channel of the NPCA primary channel. It may be defined as follows: STA or AP is at least f c , idx0 and f S20 , idx The channel of the NPCA secondary 20MHz channel may be determined (defined) using STA or AP. Even without f c , idx0 and f S40 , idx Use the NPCA secondary 40MHz channel It may be determined (defined). STA or AP is at least f c , idx0 and f S80 , idx You may use this to determine (define) the channel of the NPCA secondary 80MHz channel.

[0180] The NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel have at least f c , idx0 It may be determined (defined) using the following: The NPCA primary channel is at least f c , idx0 and f P20 ,idx It may be determined (defined) using the following: The NPCA secondary 20MHz channel has at least f c , idx0 and f S20 , idx It may be determined (defined) using NPCA. The secondary 40MHz channel has at least f c , idx0 and f S40 , idx Determine using (define) ) may be used. The NPCA secondary 80MHz channel has at least f c , idx0 and f S90 , idx It may be determined (defined) using [this method].

[0181] STA or AP is NPCA primary channel f CH,start +5 × {(2·f c,idx0 -f P20,idx It may be determined (defined) that the NPCA secondary 20MHz channel is f CH,start +5 × {(2·f c,idx0 -f S20,idx It may be determined (defined) that the channel is a 20MHz channel centered at )}MHz. STA or AP is defined as the NPCA secondary 40MHz channel being f CH,start +5 × {(2·f c,idx0 -f S40,idx )}MHz centered on a 40MHz channel It may be determined (defined) that it exists. STA or AP is NPCA secondary 80MHz channel f CH,start +5 × {(2·f c,idx0 -f S80,idx It was determined that the channel is 80 MHz centered around )} MHz. (It is permissible to do so.)

[0182] STA or AP is NPCA primary channel f CH,start +5 × (f c,idx0 +f c,idx1 -f P20,idx It may be determined (defined) that the NPCA secondary 20MHz channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f S20,idx ) Centered around MHz It may be determined (defined) that the 20MHz channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f S40,idx It may be determined (defined) that the 40MHz channel is centered at )MHz. STA or AP is determined that the NPCA secondary 80MHz channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f S80,idx 80MHz channel centered around )MHz It may be decided (defined) as such.

[0183] The NPCA primary channel is f CH,start +5 × {(2·f c,idx0 -f P20,idx It may also be a 20MHz channel centered at )}MHz. The NPCA secondary 20MHz channel is f CH,start +5 × {(2 ·f c,idx0 -f S20,idx )} A 20MHz channel centered on MHz may also be used. The NPCA secondary 40MHz channel is f CH,start +5 × {(2·f c,idx0 -f S40,idx )}MHz centered around 40MHz It may also be a channel. The NPCA secondary 80MHz channel is f CH,start+5 × {(2·f c,idx0 -f S80,idx A channel of 80 MHz centered around )} MHz may also be used.

[0184] The NPCA primary channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f P20,idx ) Centered around MHz It may also be a 20MHz channel. The NPCA secondary 20MHz channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f S20,idx A 20MHz channel centered around )MHz may also be used. NPCA The secondary 40MHz channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f S40,idx ) Centered around MHz It may also be a 40MHz channel. The NPCA secondary 80MHz channel is f CH,start +5 × (f c,idx0 +f c,idx1 -f S80,idx A channel of 80 MHz centered around ) MHz may also be used.

[0185] STA or AP may determine (define) the NPCA primary channel using Channel Width. Channel Width may be dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth. Channel Width may be the value indicated by dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth. STA or AP may, f c,idx0 ga f P20,idx Larger (f c,idx0 > f P20,idx ) If the NPCA primary channel is f CH,start+5 × f P20,idx It may be determined (defined) that the channel is a 20 MHz channel centered at +Channel Width / 2 MHz. The NPCA primary channel is f CH,start +5 × f P20,idx A 20MHz channel centered around +Channel Width / 2 MHz may also be used. STA or AP is f P20,idx ga f c,idx0 Larger (f P20,idx > f c,idx0 ) If the NPCA primary channel is f CH,start +5 × f P20,idx -It may be determined (defined) as a 20MHz channel centered at Channel Width / 2 MHz. NPCA primary channel is, f CH,start +5 × f P20,idx - A 20MHz channel centered around a channel width of 2 MHz. It is also acceptable. STA or AP is f c,idx0 ga f S20,idx Larger (f c,idx0 > f S20,idx ) If the NPCA secondary 20MHz channel is f CH,start +5 × f S20,idx It may be determined (defined) as a 20MHz channel centered at +Channel Width / 2 MHz. The NPCA secondary 20MHz channel is f CH,start +5 × f S20,idx A 20MHz channel centered around +Channel Width / 2 MHz may also be used. STA or AP is f S20,idx ga f c,idx0 Larger (f S20,idx > f c,idx0 ) If the NPCA secondary 20MHz channel is f CH,start +5 × f S20,idx -It may be determined (defined) as a 20MHz channel centered at Channel Width / 2 MHz. The NPCA secondary 20MHz channel is f CH,start+5 × f S20,idx -Channel Width / 2 may be a 20MHz channel centered around MHz. STA or AP is f c,idx0 ga f S40,idx Larger (f c,idx0 > f S40,idx ) If the NPCA secondary 40MHz channel is f CH,start +5 × f S40,idx It may be determined (defined) as a 40MHz channel centered at +Channel Width / 2 MHz. The NPCA secondary 40MHz channel is f CH,start +5 × f S40,idx A 20MHz channel centered around +Channel Width / 2 MHz may also be used. STA or AP is f S40,idx ga f c,idx0 Larger (f S40,idx > f c,idx0 ) If the NPCA secondary 40MHz channel is f CH,start +5 × f S40,idx -It may be determined (defined) as a 40MHz channel centered at Channel Width / 2 MHz. The NPCA secondary 40MHz channel is f CH,start +5 × f S40,idx -Channel Width / 2 may be a 40MHz channel centered around 2 MHz. STA or AP is f c,idx0 ga f S80,idx Larger (f c,idx0 > f S80,idx ) If the NPCA secondary 80MHz channel is f CH,start +5 × f S80,idx +Channel Width / 2 It may be determined (defined) as an 80 MHz channel centered at 80 MHz. NPCA secondary 80 MHz channel is f CH,start +5 × f S80,idx A channel of 80 MHz centered on +Channel Width / 2 MHz may also be used. STA or AP is f S80,idx ga fc,idx0 Larger (f S80,idx > f c,idx0 ) If the NPCA secondary 80MHz channel is f CH,start +5 × f S80,idx -Channel Wide It may be determined (defined) as an 80MHz channel centered at / 2 MHz. NPCA secondary The 80MHz channel is f CH,start +5 × f S80,idx - Channel Width / 80MHz centered around 2 MHz It can also be a channel.

[0186] STA or AP has at least f when Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 40MHz. P20,idx and f S20,idx Using NPCA primary You may decide (define) the channel.

[0187] STA or AP is when dot11CurrentChannelWidth is 40MHz and NPCA primary channel is f CH,start +5 × {(f P20,idx +f S20,idx )-f P20,idx It may be determined (defined) as a 20MHz channel centered at}MHz.

[0188] STA or AP has dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth set to 40MHz When f P20,idx ga f S20,idx Larger (f P20,idx > f S20,idx ) If the NPCA primary channel is f CH,start +5 × {f P20,idx -(f P20,idx -f S20,idx)}MHz centered around 20MHz It may be determined (defined) as a NEL. STA or AP is dot11CurrentChannelWidth or When dot11EHTCurrentChannelWidth is 40MHz, f S20,idx ga f P20,idx Larger (f P20,idx < f S20,idx ) If the NPCA primary channel is f CH,start +5 × {f P20,idx +(f S20,idx -f P20,idx It may be determined (defined) as a 20 MHz channel centered at )} MHz.

[0189] STA or AP has at least f when Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 80MHz. P20,idx ,f P40,idx and f S40,idx The NPCA primary channel may be determined (defined) using STA or AP when the Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 80MHz, at least f S20,idx ,f P40,idx and f S40,idx You may use this method to determine (define) the NPCA secondary 20MHz channel.

[0190] STA or AP is when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 80MHz, and the NPCA primary channel is f CH,start +5 × {(f P40,idx +f S40,idx )-f P20,idxIt may be determined (defined) as a 20MHz channel centered at}MHz. STA or AP is NPCA secondary when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 80MHz. 20MHz channel is f CH,start +5 × {(f P40,idx +f S40,idx )-f S20,idx It may be determined (defined) as a 20MHz channel centered at}MHz.

[0191] STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 80MHz. P40,idx ga f S40,idx Larger (f P40,idx > f S40,idx ) If the NPCA primary channel is f CH,start +5 × {f P20,idx -(f P40,idx -f S40,idx It may be determined (defined) as a 20MHz channel centered at )}MHz. STA or AP is dot11CurrentChannelWidth or When dot11EHTCurrentChannelWidth is 80MHz, f P40,idx ga f S40,idx Larger (f P40,idx > f S40,idx ) If the NPCA secondary 20MHz channel is f CH,start +5 × {f S20,idx -(f P40,idx -f S40,idx It may be determined (defined) to be a 20MHz channel centered at )}MHz. STA or AP is defined as f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 80MHz. S40,idx ga f P40,idx Larger (f P40,idx < f S40,idx) If the NPCA primary channel is f CH,start +5 × {f P20,idx +(f S40,idx -f P40,idx )}MHz centered 20MHz channel It may be determined (defined) to be a . STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 80MHz. S40,idx ga f P40,idx Larger (f P40,idx < f S40,idx ) If the NPCA secondary 20MHz channel is f CH,start +5 × {f S20,idx +(f S40,i dx -f P40,idx It may be determined (defined) as a 20 MHz channel centered at )} MHz.

[0192] STA or AP has at least f when Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 160MHz or 80+80MHz. P20,idx ,f P80,idx and f S80,idx The NPCA primary channel may be determined (defined) using STA or AP when the Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 160MHz or 80+80MHz, at least f S20,idx ,f P80,idx and f S80,idx The NPCA secondary 20MHz channel may be determined (defined) using the following: STA or AP is determined when the Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 160MHz or 80+80MHz. At least f S40,idx ,fP80,idx and f S80,idx The NPCA secondary 40MHz channel may be determined (defined) using this method.

[0193] STA or AP is when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz, and the NPCA primary channel is f CH,start +5 × {(f P80,idx +f S80,idx )-f P20,idx It may be determined (defined) as a 20MHz channel centered at}MHz. STA or AP may determine if dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or When it is 80+80MHz, the NPCA secondary 20MHz channel is f CH,start +5 × {(f P80,idx +f S80,idx )-f S20,idx It may be determined (defined) as a 20MHz channel centered at}MHz. STA or AP may use dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth until 160MHz. Or, when it is 80+80MHz, the NPCA secondary 40MHz channel is f CH,start +5 × {(f P80,idx +f S80,idx )-f S40,idx It may be determined (defined) as a 40MHz channel centered around}MHz.

[0194] STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz. P80,idx ga f S80,idx Larger (f P80,idx > f S80,idx ) If the NPCA primary channel is fCH,start +5 × {f P20,idx -(f P80,idx -f S80,idx )} MHz centered It may be determined (defined) as a 20MHz channel. STA or AP is defined as f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz. P80,idx ga f S80,idx Larger (f P80,idx > f S80,idx ) If the NPCA secondary 20MHz channel is f CH,start +5 × {f S20,idx -(f P80,idx -f S80,idx )}MHz centered 20MHz channel It may be determined (defined) that STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz. P80,idx ga f S80,idx Larger Kii (f P80,idx > f S80,idx ) If the NPCA secondary 40MHz channel is f CH,start +5 × {f S40,idx -(f P80,idx -f S80,idx It has been determined (defined) to be a 40MHz channel centered around )}MHz. It is also possible. STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz. S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) If the NPCA primary channel is f CH,start +5 × {f P20,idx +(f S80,idx -f P80,idx)}MHz may be determined (defined) as a 20MHz channel centered on )}MHz. STA or AP may determine if dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz when, f S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) If the NPCA secondary 20MHz channel is f CH,start +5 × {f S20,idx +(f S80,idx -f P80,idx )}MHz centered around 20MHz It may be determined (defined) that it is a channel. STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 160MHz or 80+80MHz. S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) If the NPCA secondary 40MHz channel is f CH,start +5·{f S40,idx +(f S80,idx -f P80,idx It may be determined (defined) as a 40 MHz channel centered around )} MHz.

[0195] STA or AP has at least f when Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 320MHz. P20,idx ,f P160,idx and f S160,idx Use The NPCA primary channel may be determined (defined). STA or AP is at least when the Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 320MHz. tomo f S20,idx ,f P160,idxand f S160,idx The NPCA secondary 20MHz channel may be determined (defined) using STA or AP when the Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 320MHz, at least f S40,idx ,f P160,idx and f S160,idx The NPCA secondary 40MHz channel may be determined (defined) using STA or AP when the Channel Width (dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth) is 320MHz, at least f S80,idx ,f P160,idx and f S160,idx The NPCA secondary 80MHz channel may be determined (defined) using this method.

[0196] STA or AP is when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz, and the NPCA primary channel is f CH,start +5 × {(f P160,idx +f S160,idx )-f P20,idx It may be determined (defined) as a 20MHz channel centered at}MHz. STA or AP, when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz, the NPCA secondary 20MHz channel is f CH,start +5 × {(f P160,idx +f S160,idx )-f S20,idx Centered around MHz It may be determined (defined) that it is a 20MHz channel. STA or AP determines that when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz, the NPCA secondary 40MHz channel is fCH,start +5 × {(f P160,idx +f S160,idx )-f S40,idx 40MHz centered around}MHz It may be determined (defined) as a channel. STA or AP is dot11CurrentChannelWidth Alternatively, when dot11EHTCurrentChannelWidth is 320MHz, the NPCA secondary 80MHz channel is f CH,start +5 × {(f P160,idx +f S160,idx )-f S80,idx}MHz centered on an 80MHz channel It may be decided (defined) that it exists.

[0197] STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. P160,idx ga f S160,idx Larger (f P160,idx > f S160,idx ) If the NPCA primary channel is f CH,start +5 × {f P20,idx -(f P160,idx -f S160,idx It may be determined (defined) to be a 20MHz channel centered at )}MHz. STA or AP is defined as f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. P160,idx ga f S160,idx larger i (f P160,idx > f S160,idx ) If the NPCA secondary 20MHz channel is f CH,start +5 × {f S20,idx -(f P160,idx -f S160,idx It was determined that the channel is 20 MHz centered around )} MHz (definition ) may be done. STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. P160,idx ga f S160,idx Larger (f P160,idx > f S160,idx ) place In addition, the NPCA secondary 40MHz channel is f CH,start +5 × {f S40,idx -(f P160,idx -f S160,idx It may be determined (defined) to be a 40MHz channel centered at )}MHz. STA or AP is defined as f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. P160,idx ga f S160,idx Larger (f P160,idx > f S160,idx ) If the NPCA secondary 80MHz channel is f CH,start +5 × {f S80,idx -(f P160,idx -f S160,idx )}MHz centered around 80MHz It may be determined (defined) as a . STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. S160,idx ga f P160,idx Larger (f P160,idx < f S160,idx ) If the NPCA primary channel is f CH,start +5 × {f P20,idx +(f S160,idx -f P160,idx It may be determined (defined) to be a 20MHz channel centered at )}MHz. STA or AP is determined to have dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth at 320MHz ki, f S160,idx ga f P160,idx Larger (f P160,idx < f S160,idx) If the NPCA secondary 20MHz channel is f CH,start +5 × {f S20,idx +(f S160,idx -f P160,idx It may be determined (defined) to be a 20MHz channel centered at )}MHz. STA or AP is defined as f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. S160,idx ga f P160,idx Larger Kii (f P160,idx < f S160,idx ) If the NPCA secondary 40MHz channel is f CH,start +5 × {f S40,idx +(f S160,idx -f P160,idx It was determined that the channel is 40 MHz centered around )} MHz. (This may be correct.) STA or AP is f when dot11CurrentChannelWidth or dot11EHTCurrentChannelWidth is 320MHz. S160,idx ga f P160,idx Larger (f P160,idx < f S160,idx ) In this case, the NPCA secondary 80MHz channel is f CH,start +5 × {f S80,idx +(f S160,idx -f P160,idx It may be determined (defined) as an 80MHz channel centered around )}MHz.

[0198] f P20,idx and / or f c,idx0 and / or f c,idx1 and / or f S20,idx and / or f P40,idx and / or f S40,idx and / or f P80,idx and / or f S80,idx and / or f P160,idx and / or f S160,idx This can also be an index. For example, f P20,idxThis is the input used to determine (define) the position of the primary channel. Dex is also acceptable. c,idx0 This may be an index used to determine (define) the channel width position. S20,idx The position of the secondary 20MHz channel is It may also be an index used for determination (definition). P40,idx This may be an index used to determine (define) the position of the primary 40MHz channel. . f S40,idx This is used to determine (define) the position of the secondary 40MHz channel. An index is also acceptable. P80,idx This determines (defines) the position of the primary 80MHz channel. It may also be an index used for that purpose. S80,idx f may be an index used to determine (define) the position of the secondary 80MHz channel. P160,idx This may be an index used to determine (define) the position of the primary 160MHz channel. S160,idx This is to determine (define) the position of the secondary 160MHz channel. This may be an index used for [something]. The index may also be a channel number.

[0199] "-" can also represent subtraction. "+" can also represent addition. "·" can also represent multiplication. "×" can also represent multiplication. " / " can also represent division.

[0200] Figure 14 shows the channel width when the channel width is 80 MHz according to one aspect of this embodiment. This figure shows an example where NPCA channels are located symmetrically with respect to the center frequency. Channels 1401, 1402, 1403, and 1404 may be 20MHz channels. Channel 1405 may be the primary channel (primary 20MHz channel). Channel 1406 may be the secondary 20MHz channel. Channel 1407 may be the secondary 40MHz channel. 402 may be configured as the primary 40MHz channel. 1408 may be the NPCA primary channel. 1409 may be the NPCA secondary 20MHz channel. 14 The center frequency of 05 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 1406 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 1407 is f CH,start +5 × f S40,idx It may be determined (defined) in MHz. The center frequency of the primary 40MHz channel consisting of 1401 and 1402 is f CH,start +5 × f P40,idx It may be determined (defined) in MHz. Here, f CH,start +5 × {(f P40,idx +f S40,idx )-f P20,idx The position of 1408 may be determined (defined) by MHz. Here, f CH,start +5 × {(f P40,idx +f S40,idx )-f S20,idx The position of 1409 is determined by MHz (definition). ) may be done. Here, f CH,start +5 × {(2·f c,idx0 -f P20,idx )}MHz, 14 The position of 08 may be determined (defined). Here, f CH,start +5 × {(2·f c,idx0 -f S20,idxThe position of 1409 may be determined (defined) by )}MHz. For example, if 1406 is the primary channel, then 1409 may be the NPCA primary channel. If 1405 is the secondary 20MHz channel, then 1408 may be the NPCA secondary 20MHz channel. In other words, the NPCA primary channel may be a channel located at a frequency obtained by symmetrically shifting the primary channel across the center frequency of the channel width. The NPCA secondary 20MHz channel may be a channel located at a frequency obtained by symmetrically shifting the secondary 20MHz channel across the center frequency of the channel width.

[0201] Figure 15 shows the channel width when the channel width is 80 MHz according to one aspect of this embodiment. This diagram shows an example where the NPCA channel is located at a position shifted by the center frequency. Channels 1501, 1502, 1503, and 1504 may be 20MHz channels. Channel 1505 may be the primary channel (primary 20MHz channel). Channel 1506 is the secondary 20MHz channel. It may be a channel. 1507 may be a secondary 40MHz channel. 150 A primary 40MHz channel may be configured with 1 and 1502. 1508 may be an NPCA primary channel. 1509 may be an NPCA secondary 20MHz channel. Good. The center frequency of 1505 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 1506 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 1507 is f CH,start +5 × f S40,idxIt may be determined (defined) in MHz. The center frequency of the primary 40MHz channel consisting of 1501 and 1502 is f CH,start +5 × f P40,idx It may be determined (defined) in MHz. Here, f S40,idx ga f P40,idx Larger Kii (f P40,idx < f S40,idx ) so, f CH,start +5 × {f P20,idx +(f S40,idx -f P40,idx The position of 1508 may be determined (defined) by )}MHz. Here, f S40,idx ga f P40,idx Larger (f P40,idx < f S40,idx ) so, f CH,start +5 × {f S20,idx +(f S40,idx -f P40,idx The position of 1509 may be determined (defined) by )}MHz. For example, if 1506 is the primary channel, then 1509 may be the NPCA primary channel. If 1505 is the secondary 20MHz channel, then 1508 may be the NPCA secondary 20MHz channel. In other words, the NPCA primary channel may be a channel located at a frequency shifted from the primary channel by the center frequency of the channel width. The NPCA secondary 20MHz channel may be a channel located at a frequency shifted from the secondary 20MHz channel by the center frequency of the channel width.

[0202] Figure 16 shows an example of how the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width when the channel width is 80+80MHz, according to one aspect of this embodiment. Channels 1601, 1602, 1603, 1604, 1605, 1606, 1607, and 1608 are 20MHz channels. It may be present. 1609 may be the primary channel (primary 20MHz channel). 1610 may be the secondary 20MHz channel. 1611 may be the secondary 40MHz channel. It may be a channel. 1612 may be a secondary 80MHz channel. 16 Even if the primary 80MHz channel is configured with 01, 1602, 1603, and 1604 Good. 1613 may be the NPCA primary channel. 1614 is the NPCA secondary channel. It may be a 20MHz channel. 1615 may be an NPCA secondary 40MHz channel. The center frequency of 1609 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 1610 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 1611 is f CH,start +5 × f S40,idx It may be determined (defined) in MHz. The center frequency of 1612 is f CH,start +5 × f S80,idx It may be determined (defined) in MHz. The center frequency of the primary 80MHz channel, consisting of 1601, 1602, 1603, and 1604, is f CH,start +5 × f P80,idx It may be determined (defined) in MHz. Here, f CH,start +5 × {(f P80,idx +f S80,idx )-f P20,idx The position of 1613 may be determined (defined) by MHz. Here, f CH,start +5 × {(f P80,idx +f S80,idx )-f S20,idx}MHz Therefore, the position of 1614 may be determined (defined). Here, f CH,start +5 × {(fP80,idx +f S80,idx )-f S40,idx The position of 1615 may be determined (defined) by MHz. Here, f CH,start +5 × (f c,idx0 +f c,idx1 -f P20,idx )By MHz, the position of 1613 is It may be determined (defined). Here, f CH,start +5 × (f c,idx0 +f c,idx1 -f S20,idx )MHz The position of 1614 may be determined (defined) by this. Here, f CH,start +5 × (f c,idx0 +f c,idx1 -f S40,idx The position of 1615 may be determined (defined) by MHz. Example For example, if 1610 is the primary channel, even if 1614 is the NPCA primary channel... Good. If 1609 is a secondary 20MHz channel, then 1613 may be an NPCA secondary 20MHz channel. In other words, the NPCA primary channel may be a channel located at a frequency that is symmetrically shifted from the primary channel. The NPCA secondary 20MHz channel may be a channel located at a frequency that is symmetrically shifted from the secondary 20MHz channel. The NPCA secondary 40MHz channel may be a channel located at a frequency that is symmetrically shifted from the secondary 40MHz channel.

[0203] Figure 17 shows an example of a configuration in this embodiment where the NPCA channel is located at a position shifted by the center frequency of the channel width when the channel width is 80+80MHz. 1701, 1702, 1703, 1704, 1705, 1706, 1707, and 1708 are 20MHz. It may be a channel. 1709 may be a primary channel (primary 20MHz channel). 1710 may be a secondary 20MHz channel. 1711 may be a secondary 40MHz channel. 1712 may be a secondary 80MHz channel. Good. In 1701, 1702, 1703, and 1704, the primary 80MHz channel is configured. It may be done. 1713 may be the NPCA primary channel. 1714 is the NPCA It may be a secondary 20MHz channel. 1715 may be an NPCA secondary 40MHz channel. The center frequency of 1709 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 1710 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 1711 is f CH,start +5 × f S40,idx Determined (defined) in MHz It is also acceptable. The center frequency of 1712 is f CH,start +5 × f S80,idx Determined (defined) in MHz It may be done. The center frequency of the primary 80MHz channel, consisting of 1701, 1702, 1703, and 1704, is f CH,start +5 × f P80,idx It may be determined (defined) in MHz. Here, f S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) so, f CH,start +5 ×{f P20,idx +(f S80,idx -f P80,idx The position of 1713 is determined (defined) by )}MHz That's fine too. Here, f S80,idx ga f P80,idxLarger (f P80,idx < f S80,idx ) so, f CH,start +5 × {f S20,idx +(f S80,idx -f P80,idx The position of 1714 may be determined (defined) by )}MHz. Here, f S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) so, f CH,start +5 × {f S40,idx +(f S80,idx -f P80,idx The position of 1715 may be determined (defined) by )}MHz. For example, if 1710 is the primary channel, then 1714 may be the NPCA primary channel. If 1709 is the secondary 20MHz channel, then 1713 may be the NPCA secondary 20MHz channel. In other words, the NPCA primary channel may be a channel located at a frequency shifted from the primary channel. The NPCA secondary 20MHz channel may be a channel located at a frequency shifted from the secondary 20MHz channel.

[0204] Figure 18 shows an example of how the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width when the channel width is 160 MHz, according to one aspect of this embodiment. Channels 1801, 1802, 1803, 1804, 1805, 1806, 1807, and 1708 are 20 MHz channels. This is also acceptable. 1809 may be the primary channel (primary 20MHz channel). 1810 may be the secondary 20MHz channel. 1811 may be the secondary 40MHz channel. 1812 may be the secondary 80MHz channel. 180 1, 1802, 1803, and 1804 may be used to configure the primary 80MHz channel. i. 1813 may be the NPCA primary channel. 1814 may be the NPCA secondary 20MHz channel. 1815 may be the NPCA secondary 40MHz channel. The center frequency of 1809 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 1810 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 1811 is f CH,start +5 × f S40,idx It may be determined (defined) in MHz. The center frequency of 1812 is f CH,start +5 × f S80,idx It may be determined (defined) in MHz. Primary 80MHz channel consisting of 1801, 1802, 1803, and 1804 The center frequency is f CH,start +5 × f P80,idx It may be determined (defined) in MHz. Here, f CH,start +5 × {(f P80,idx +f S80,idx )-f P20,idx The position of 1813 is determined by MHz. (Definition) may also be used. Here, f CH,start +5 × {(f P80,idx +f S80,idx )-f S20,idx}MHz Therefore, the position of 1814 may be determined (defined). Here, f CH,start +5 × {(f P80,idx +f S80,idx )-f S40,idx The position of 1815 may be determined (defined) by MHz. Here, f CH,start +5 × {(2·f c,idx0 -f P20,idx The position of 1813 is determined by )}MHz. (Definition) may be used. Here, f CH,start +5 × {(2·f c,idx0 -f S20,idx )}MHz The position of 1814 may be determined (defined). Here, f CH,start +5 × {(2·f c,idx0 - f S40,idx The position of 1815 may be determined (defined) by )}MHz. For example, 181 If 0 is the primary channel, then 1814 may also be the NPCA primary channel. If 9 is the secondary 20MHz channel, then 1813 is the NPCA secondary 20MHz channel. This is also possible. In other words, the NPCA primary channel may be a channel located at a frequency obtained by symmetrically shifting the primary channel across the center frequency of the channel width. The NPCA secondary 20MHz channel may be a channel located at a frequency obtained by symmetrically shifting the secondary 20MHz channel across the center frequency of the channel width. The NPCA secondary 40MHz channel may be a channel width This channel is located at a frequency obtained by shifting the secondary 40MHz channel symmetrically from its center frequency. That's fine.

[0205] Figure 19 shows an example of a configuration in this embodiment where the NPCA channel is located at a position shifted by the center frequency of the channel width when the channel width is 160 MHz. 1901, 1902, 1903, 1904, 1905, 1906, 1907, and 1908 are 20 MHz channels. It may be a channel. 1909 may be a primary channel (primary 20MHz channel). 1910 may be a secondary 20MHz channel. 1911 may be a secondary 40MHz channel. 1912 may be a secondary 80MHz channel. i. Primary 80MHz channels are configured in 1901, 1902, 1903, and 1904. It may be done as follows: 1913 may be the NPCA primary channel. 1914 may be the NPCA secondary 20MHz channel. 1915 may be the NPCA secondary 40MHz channel. The center frequency of 1909 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 1910 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 1911 is f CH,start +5 × f S40,idx Determined (defined) in MHz It is also acceptable. The center frequency of 1912 is f CH,start +5 × f S80,idx Determined (defined) in MHz It is also acceptable. The center frequency of the primary 80MHz channel, consisting of 1901, 1902, 1903, and 1904, is f CH,start +5 × f P80,idx It may be determined (defined) in MHz. Here, f S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) so, f CH,start +5 × {f P20,idx +(f S80,idx -f P80,idx The position of 1913 may be determined (defined) by )}MHz. Here, f S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) so, fCH,start +5 × {f S20,idx +(f S80,idx -f P80,idx The position of 1914 may be determined (defined) by )}MHz. Here, f S80,idx ga f P80,idx Larger (f P80,idx < f S80,idx ) so, f CH,start +5 × {f S40,idx +(f S80,idx -f P80,idx The position of 1915 may be determined (defined) by )}MHz. For example, if 1910 is the primary channel, then 1914 may be the NPCA primary channel. If 1909 is the secondary 20MHz channel, then 1913 may be the NPCA secondary 20MHz channel. In other words, the NPCA primary channel is the channel width This may also be a channel located at a frequency shifted from the primary channel at its center frequency. The NPCA secondary 20MHz channel may be a channel located at a frequency shifted from the center frequency of the channel width to the secondary 20MHz channel. The NPCA secondary 40MHz channel may be a channel located at a frequency shifted from the center frequency of the channel width to the secondary 40MHz channel.

[0206] Figure 20 shows an example of how the NPCA channels are positioned symmetrically with respect to the center frequency of the channel width when the channel width is 320 MHz, according to one aspect of this embodiment. 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, and 2016 are channels of 20 MHz. It is also acceptable to use the following: 2017 may be the primary channel (primary 20MHz channel). 2018 may be the secondary 20MHz channel. 2019 may be the secondary 40MHz channel. 2020 may be the secondary 80MHz channel. 202 1 may be a secondary 160MHz channel. 2001, 2002, 2003, 20 In 04, 2005, 2006, 2007, and 2008, a primary 160MHz channel may be configured. 2022 may be an NPCA primary channel. 2023 is an NP It may be a CA secondary 20MHz channel. 2024 may be an NPCA secondary 40MHz channel. 2025 may be an NPCA secondary 80MHz channel. The center frequency of 2017 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 2018 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 2019 is f CH,start +5 × f S40,idx It may be determined (defined) in MHz. The center frequency is f CH,start +5 × f S80,idx It may be determined (defined) in MHz. The center frequency is f CH,start +5 × f S160,idx It may be determined (defined) in MHz. The center frequency of the primary 160MHz channel consisting of 2001, 2002, 2003, 2004, 2005, 2006, 2007, and 2008 is f CH,start +5 × f P160,idx Determined in MHz (Definition) may be used. Here, f CH,start +5 × {(f P160,idx +f S160,idx)-f P20,idx The position of 2022 may be determined (defined) by MHz. Here, f CH,start +5 × {(f P160,idx +f S160,idx )-f S20,idx The position of 2023 may be determined (defined) by MHz. Here, f CH,start +5 × {(f P160,idx +f S160,idx )-f S40,idx}MHz, 202 The position of 4 may be determined (defined). Here, f CH,start +5 × {(f P160,idx +f S160,idx )-f S80,idx The position of 2025 may be determined (defined) by MHz. Here, f CH,start +5 × {(2·f c,idx0 -f P20,idx The position of 2022 may be determined (defined) by )}MHz. Here, f CH,start +5 × {(2·f c,idx0 -f S20,idx )}MHz, 2023rd The position may be determined (defined). Here, f CH,start +5 × {(2·f c,idx0 -f S40,idx )}MHz The position of 2024 may be determined (defined) by this. Here, f CH,start +5 × {(2·f c,idx0 -f S80,idx The position of 2025 may be determined (defined) by )}MHz. For example If 2018 is the primary channel, then 2023 may be the NPCA primary channel. If 2017 is the secondary 20MHz channel, then 2022 may be the NPCA secondary 20MHz channel. In other words, the NPCA primary channel may be a channel located at a frequency obtained by symmetrically shifting the primary channel across the center frequency of the channel width. The NPCA secondary 20MHz channel may be a channel obtained by symmetrically shifting the secondary 20MHz channel across the center frequency of the channel width. The channel may be located at a frequency that is symmetrically shifted across the center frequency of the channel width from the secondary 40MHz channel. The NPCA secondary 80MHz channel may be located at a frequency that is symmetrically shifted across the center frequency of the channel width from the secondary 80MHz channel.

[0207] Figure 21 shows an example of a configuration in this embodiment where the NPCA channel is located at a position shifted by the center frequency of the channel width when the channel width is 320 MHz. 2101, 2102, 2103, 2104, 2105, 2106, 2107, 2108, 2109, 2110, 2111, 2112, 2113, 2114, 2115, and 2116 are 20 MHz channels. It may be a channel. 2117 may be a primary channel (primary 20MHz channel). 2118 may be a secondary 20MHz channel. 2119 may be a secondary 40MHz channel. 2120 may be a secondary 80MHz channel. i. 2121 may be a secondary 160MHz channel. 2101, 2102, 21 03, 2104, 2105, 2106, 2107, and 2108, primary 160MHz A channel may be configured. 2122 may be an NPCA primary channel. 2123 may be an NPCA secondary 20MHz channel. 2124 may be an NPCA secondary 40MHz channel. 2125 may be an NPCA secondary 80MHz channel. The center frequency of 2117 is f CH,start +5 × f P20,idx It may be determined (defined) in MHz. The center frequency of 2118 is f CH,start +5 × f S20,idx It may be determined (defined) in MHz. The center frequency of 2119 is f CH,start +5 × f S40,idx It may be determined (defined) in MHz. The center frequency of 2120 is f CH,start +5 × f S80,idx It may be determined (defined) in MHz. The center frequency of 2121 is f CH,start +5 × f S160,idx It may be determined (defined) in MHz. The center frequency of the primary 160MHz channel consisting of 2101, 2102, 2103, 2104, 2105, 2106, 2107, and 2108 is f CH,start +5 × f P160,idx It may be determined (defined) in MHz. Here, f S160,idx ga f P160,idx Larger (f P160,idx < f S160,idx ) so, f CH,start +5 × {f P20,idx +(f S160,idx -f P160,idx )}MHz The position of 2122 may be determined (defined). Here, f S160,idx ga f P160,idx Larger (f P160,idx < f S160,idx ) so, f CH,start +5 × {f S20,idx +(f S160,idx-f P160,idx )} The position of 2123 may be determined (defined) by f MHz. Here, f S160,idx is f P160,idx greater than f P160,idx < f S160,idx ), so the position of 2124 may be determined (defined) by f + 5×{f CH,start +(f S40,idx -f S160,idx )} MHz. Here, f P160,idx is f S160,idx greater than f P160,idx < f P160,idx < f S160,idx ), so the position of 2125 may be determined (defined) by f + 5×{f CH,start +(f S80,idx -f S160,idx )} MHz. For example P160,idx , if 2118 is the primary channel, 2123 may be the NPCA primary channel. If 2117 is the secondary 20 MHz channel, 2122 may be the NPCA secondary 20 MHz channel. That is, the NPCA primary channel may be a channel located at a frequency obtained by shifting the primary channel by the center frequency of the channel width. The NPCA secondary 20 MHz channel may be a channel located at a frequency obtained by shifting the secondary 20 MHz channel by the center frequency of the channel width . The NPCA secondary 40 MHz channel may be a channel located at a frequency obtained by shifting the secondary 40 MHz channel by the center frequency of the channel width. The NPCA secondary 80 MHz channel may be a channel located at a frequency obtained by shifting the secondary 80 MHz channel by the center frequency of the channel width

[0208] ​Figure 22 shows an example of the process by which an STA determines the channel frequency according to one aspect of this embodiment. The STA receives information regarding the channel frequency from the AP (S2201). The STA uses the received information to determine the channel frequency (S2202). The STA may receive a frame containing channel frequency information from an AP belonging to the same BSS. The STA uses the channel frequency information received from the AP to determine the primary channel and / or secondary 20MHz channel and / or secondary 40MHz channel and / or secondary 80MHz channel and / or secondary 160MHz channel and / or Alternatively, the channel frequencies of the NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel may be determined. While the primary channel is busy with OBSS traffic, the STA receives and / or transmits on one or more channels, including the NPCA primary channel. Alternatively, channel access may be performed.

[0209] Figure 23 shows an example of the process by which an AP determines the channel frequency according to one aspect of this embodiment. The diagram shows the following. The AP determines the channel frequency (S2301). The AP transmits information about the channel frequency (S2302). The AP transmits information about the primary channel and / or secondary 20MHz channel and / or secondary 40MHz channel and / or secondary Determine the channel frequencies of the 80MHz channel and / or secondary 160MHz channel and / or NPCA primary channel and / or NPCA secondary 20MHz channel and / or NPCA secondary 40MHz channel and / or NPCA secondary 80MHz channel. It is also acceptable. AP contains information to indicate the channel frequency in STA, which belongs to the same BSS. The AP may transmit a signal. While the primary channel is busy with OBSS traffic, the AP receives and / or transmits and / or transmits on one or more channels, including the NPCA primary channel. Channel access may be performed.

[0210] STA or AP may determine (define) the channel frequency based on information indicating one of several channel frequency patterns. There may be an information element that includes a first field for the pattern. AP uses the pattern A frame containing an information element with fields for indicating a pattern may be sent. The STA receives a frame containing an information element with fields for indicating a pattern. Furthermore, a channel frequency pattern may be determined. For example, when the channel width is 160 MHz, there may be multiple channel frequency patterns, as shown in Figures 18 and 19. If 0 is shown in the first field, the channel frequency is determined as shown in Figure 18. If 1 is shown in the first field, the channel frequency is determined as shown in Figure 19. It may also be used as a fixed term.

[0211] The dot11NPCACurrentChannelCenterFrequencyIndex may indicate the channel center frequency of the Channel width in NPCA. The dot11NPCACurrentChannelCenterFrequencyIndex is f NPCA,idx It may be. The dot11NPCACurrentChannelWidth may indicate the channel width in NPCA. The dot11NPCACurrentPrimary Channel may indicate the location of the NPCA primary channel. The dot11NPCACurrentPrimaryChannel is f NP20,idx It may be. f NP20,idx And f NPCA,idx The relationship of may be defined in advance. When the dot11NPCACurrentChannelWidth is 20 MHz, f NP20,idx = f NPCA,idx It may be. When the dot11NPCACurrentChannelWidth is greater than 20 MHz, f NP20,idx And f NPCA,idx The relationship of may be defined using f NP20,idx , f NPCA,idx , A, B, C, D, E. For example, f NP20,idx And f NPCA,idx The relationship of may be f NP20,idx = f NPCA,idx -A·(B / C - D)+E. f NP20,idx And f NPCA,idx The relationship of may be defined by an expression other than the above. For example, A, C, E may be integers. B may be N 20MHz It may be. B may be a value that changes according to the value of the dot11NPCACurrentChannelWidth. D may be an integer in the range from 0 to B - 1. D is , n p20 It may be. When the dot11NPCACurrentChannelWidth is a predetermined value, the NPCA primary (20MHz) channel is f CH,start +5 × f NP20,idx It may also be a channel with a bandwidth of 20 MHz centered around MHz. When dot11NPCACurrentChannelWidth is a predetermined value, the NPCA secondary 20 MHz channel is f CH,start +5 × f NS20,idx A channel with a bandwidth of 20 MHz centered around MHz is also acceptable. NS20,idx If D is even, then f NP20,idx +F, and if D is odd, f NP20,idx -F is also acceptable. F may be an integer. When dot11NPCACurrentChannelWidth is a predetermined value, the NPCA primary 40MHz channel is f CH,start +5 × f NP40,idx Centered around MHz The channel may have a bandwidth of 40 MHz. dot11NPCACurrentChannelWidth is predetermined When the value is f, the NPCA secondary 40MHz channel is f CH,start +5 × f NS40,idx A channel with a bandwidth of 40 MHz centered around MHz is also acceptable. NP40,idx and f NPCA,idx The relationship may be defined in advance. NP40,idx and f NPCA,idx The relationship is f NP40,idx ,f NPCA,idx , may be defined using G, B, H, I, J. For example, f NP40,idx =f NPCA,idx -G·(B / HI)+J is also acceptable. NP20,idx and f NPCA,idx The relationship between G, H, and J may be defined by equations other than those mentioned above. I may be an integer. I may be FLOOR(D / K). K may be an integer. . f NS40,idx If I is even, then f NP40,idx +L, and if D is odd, f NP40,idx -L It may exist. L may be an integer. dot11NPCACurrentChannelWidth is a predetermined value At that time, the NPCA primary 80MHz channel is f CH,start +5 × f NP80,idx It may also be a channel with a bandwidth of 80 MHz centered around MHz. When dot11NPCACurrentChannelWidth is a predetermined value, the NPCA secondary 80 MHz channel is f CH,start +5 × f NS80,idx A channel with a bandwidth of 80 MHz centered around MHz is also acceptable. NP80,idx and f NPCA,idx The relationship may be defined in advance. NP80,idx and f NPCA,idx The relationship is f NP80,idx ,f NPCA,idx Using M, B, N, O, P It may be defined as f NP80,idx =f NPCA,idx It may also be -M·(B / NO)+P. M, N, and P may be integers. O may be FLOOR(D / Q). Q is an integer. That's good too. NS80,idx If O is even, then f NP80,idx +R, and if O is odd, f NP80,idx -R is also acceptable. R may be an integer. The NPCA primary 40MHz channel is a 40MHz channel consisting of the NPCA primary channel and the NPCA secondary 20MHz channel. It is also acceptable. The NPCA primary 80MHz channel is an 80MHz channel composed of the NPCA primary channel, the NPCA secondary 20MHz channel, and the NPCA secondary 40MHz channel. It may be present. dot11NPCACurrentChannelCenterFrequencyIndex and / or dot11NPCACurrentChannelWidth and / or dot11NPCACurrentPrimaryChannel may be information about channel frequency. Information other than that mentioned above may be information about channel frequency. It may also be the case that the AP contains the inf of dot11NPCACurrentChannelCenterFrequencyIndex and / or dot11NPCACurrentChannelWidth and / or dot11NPCACurrentPrimaryChannel. The STA may send a frame containing an orientation element. The STA may receive a frame containing an information element containing dot11NPCACurrentChannelCenterFrequencyIndex and / or dot11NPCACurrentChannelWidth and / or dot11NPCACurrentPrimaryChannel. The information element may be, for example, an NPCA operation element, a UHR operation element, etc. The predetermined values ​​are 20MHz, 40MHz, 80MHz, 80+80MHz, 160MHz, and 320MHz. It may be the case that dot11NPCACurrentChannelCenterFrequencyIndex is dot11CurrentChannelCenterFrequencyIndex0 or dot11CurrentChannelCenterFrequencyIndex0 Good. dot11NPCACurrentChannelWidth can also be dot11NPCACurrentChannelWidth.

[0212] As described above, in embodiments of the present invention, STA and AP are NPCA primary channels Determine the channel frequency of the NPCA secondary 20MHz channel and / or NPCA secondary 40MHz channel and / or NPCA secondary 80MHz channel. The invention allows the STA and AP to determine the channel frequency of the NPCA primary channel and / or the NPCA secondary 20MHz channel and / or the NPCA secondary 40MHz channel and / or the NPCA secondary 80MHz channel.

[0213] The programs that run on the base station device and terminal device according to embodiments of the present invention may be programs that control the CPU (Central Processing Unit) and the like (programs that make the computer function) in order to realize the functions of the above embodiments according to embodiments of the present invention. The information handled by these devices is temporarily stored in RAM (Random Access) during processing. It is stored in Memory, and then stored in various ROMs such as Flash ROM (Read Only Memory) or HDD (Hard Disk Drive), and read, modified, and written by the CPU as needed. It can be done.

[0214] Furthermore, the terminal device and some of the base station devices in the above-described embodiment may be implemented using a computer. In that case, the program for implementing this control function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be loaded into a computer system and executed.

[0215] Furthermore, the term "computer system" as used herein refers to a computer system built into a terminal device or base station device, and includes hardware such as the operating system and peripheral devices. Also, "computer-readable recording media" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and hard disks built into computer systems. It refers to a storage device.

[0216] Furthermore, "computer-readable recording media" may include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, as well as those that hold programs for a certain period of time, such as volatile memory within a computer system that acts as a server or client in such cases. In addition, the above-mentioned program may be for the purpose of realizing some of the functions described above, and may also be a program that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0217] The terminal device may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to cause the terminal device to perform the operations and processing described in the above embodiment using the processor. The base station device may consist of at least one processor and at least one memory containing computer program instructions (computer program). The memory and computer program instructions (computer program) may be configured to use a processor to cause the base station device to perform the operations and processing described in the above embodiment.

[0218] Furthermore, the base station device in the above-described embodiment can also be implemented as an assembly (device group) composed of multiple devices. Each device constituting the device group may have some or all of the functions or functional blocks of the base station device related to the above-described embodiment. The device group only needs to have a complete set of functions or functional blocks of the base station device. In addition, the terminal device related to the above-described embodiment can also communicate with the base station device as an assembly.

[0219] Furthermore, some or all of the terminal device and base station device in the above-described embodiments may be implemented as LSIs, which are typically integrated circuits, or as chipsets. Each functional block of the device and base station equipment may be individually chipped, or some or all of them may be integrated into a single chip. Furthermore, the method of integrated circuit creation is not limited to LSIs; dedicated circuits or general-purpose circuits may also be used. It could also be implemented using a processor. Furthermore, advances in semiconductor technology could lead to the development of integrated circuits that replace LSIs. If such technology emerges, it will also be possible to use integrated circuits based on that technology.

[0220] Furthermore, although the above-described embodiment mentions a terminal device as an example of a communication device, the present invention is not limited to this and can also be applied to stationary or non-movable electronic devices installed indoors or outdoors, such as terminal devices or communication devices for AV equipment, kitchen equipment, cleaning and washing machines, air conditioning equipment, office equipment, vending machines, and other household appliances.

[0221] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like that do not depart from the gist of this invention are also included. Furthermore, the present invention can be modified in various ways within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of this invention. In addition, configurations in which elements described in each of the above embodiments that produce similar effects are substituted for each other are also included. [Explanation of symbols]

[0222] SU1, AU1 Antenna Section SU2, AU2 RF section SU3, AU3 Physical Layer Processing Unit SU4, AU4 MAC layer processing unit SU5 Upper Layer Packet Processing Unit SU6, AU6 Wireless Transceiver Unit SU7, AU7 Frame Processing Unit AU5 DSAF section

Claims

1. The system includes a receiving unit that receives frames, and the frames indicate the location of the primary channel. すf P20,idx f indicating the channel center frequency c,idx0 including Channel Width indicating the channel width, and when the Channel Width is 160 MHz, at least the f P20,idx f P80,idx f S80,idx is used to determine the center of the NPCA primary channel, and the f P80,idx is f c,idx0 -16·(N 20MHz / 8 - n p80 ), and the f S80,idx is f p80 +16 when n P80,idx is even, and f p80 -16 when n P80,idx is even, and the N 20MHz is 8, and the n p80 is FLOOR(n p20 / 4), and the n p20 is an integer in the range of 0 or more and N 20MHz -1 or less, a terminal device.

2. The aforementioned NPCA primary channel is f CH,start +5 × {(f P80,idx +f S80,idx )-f P20,idx MHz The terminal device according to claim 1, which has a 20 MHz channel centered on [a specific frequency].

3. said f P80,idx The above f S80,idx If it is greater than f CH,start +5 × {f P20,idx -(f P80,idx -f S80,idx )}MHz is a 20MHz channel, and the f S80,idx The above f P80,idx If it is greater than f CH,start +5 × {f P20,idx +(f S80,idx -f P80,idx The terminal device according to claim 1, which has a 20 MHz channel centered at )} MHz.

4. It includes a transmitting unit that transmits frames, and the frames indicate the location of the primary channel. sf P20,idx f, which indicates the channel center frequency c,idx0 , including Channel Width which indicates the channel width, and when the Channel Width is 160MHz, at least the f P20,idx ,f P80,idx ,f S80,idx The center of the NPCA primary channel is determined using the f P80,idx is, f c,idx0 -16・(N 20MHz / 8-n p80 ) + 8, and the above f S80,idx is the aforementioned n p80 When f is even, P80,idx +16, the aforementioned n p80 When f is even, P80,idx -16, and the above N 20MHz is 8, and the n p80 is FLOOR(n p20 / 4) and the above n p20 is 0 or greater than the above N 20MHz A base station device whose integer value is in the range of -1 or less.

5. The aforementioned NPCA primary channel is f CH,start +5 × {(f P80,idx +f S80,idx )-f P20,idx MHz The base station device according to claim 4, which has a 20 MHz channel centered on [a specific frequency].

6. said f P80,idx The above f S80,idx If it is greater than f CH,start +5 × {f P20,idx -(f P80,idx -f S80,idx )}MHz is a 20MHz channel, and the f S80,idx The above f P80,idx If it is greater than f CH,start +5 × {f P20,idx +(f S80,idx -f P80,idx The base station device according to claim 5, which has a 20 MHz channel centered at )} MHz.

7. A communication method for a terminal device, comprising the step of receiving a frame, wherein the frame indicates the location of the primary channel. P20,idx f, which indicates the channel center frequency c,idx0 , including Channel Width which indicates the channel width, and when the Channel Width is 160MHz, at least the f P20,idx ,f P80,idx ,f S80,idx The center of the NPCA primary channel is determined using the f P80,idx is, f c,idx0 -16・(N 20MHz / 8-n p80 ) + 8, and the above f S80,idx is the aforementioned n p80 When f is even, P80,idx +16, the aforementioned n p80 When f is even, P80,idx -16, and the above N 20MHz is 8, and the n p80 is FLOOR(n p20 / 4) and the above n p20 is 0 or greater than the above N 20MHz -1 or less A communication method that includes integers within a range.

Images