WO2022149946A1 - 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 - Google Patents
무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 Download PDFInfo
- Publication number
- WO2022149946A1 WO2022149946A1 PCT/KR2022/000431 KR2022000431W WO2022149946A1 WO 2022149946 A1 WO2022149946 A1 WO 2022149946A1 KR 2022000431 W KR2022000431 W KR 2022000431W WO 2022149946 A1 WO2022149946 A1 WO 2022149946A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spatial reuse
- field
- value
- mhz
- fields
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2603—Signal structure ensuring backward compatibility with legacy system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/04—Scheduled access
- H04W74/06—Scheduled access using polling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
Definitions
- the present specification relates to a technique for configuring a spatial reuse field in a wireless LAN system, and more particularly, to a method and apparatus for configuring a trigger frame and a TB PPDU supporting spatial reuse in two wireless LAN systems.
- a wireless local area network has been improved in various ways.
- the IEEE 802.11ax standard proposes an improved communication environment using OFDMA (orthogonal frequency division multiple access) and DL MU downlink multi-user multiple input, multiple output (MIMO) techniques.
- OFDMA orthogonal frequency division multiple access
- MIMO downlink multi-user multiple input, multiple output
- the new communication standard may be an Extreme high throughput (EHT) specification that is being discussed recently.
- the EHT standard may use a newly proposed increased bandwidth, an improved PHY layer protocol data unit (PPDU) structure, an improved sequence, a hybrid automatic repeat request (HARQ) technique, and the like.
- the EHT standard may be referred to as an IEEE 802.11be standard.
- An increased number of spatial streams may be used in the new wireless LAN standard.
- a signaling technique in the WLAN system may need to be improved.
- the present specification proposes a method and apparatus for configuring a trigger frame and TB PPDU supporting space reuse in a WLAN system.
- An example of the present specification proposes a method of configuring a trigger frame and a TB PPDU supporting spatial reuse.
- This embodiment may be performed in a network environment in which a next-generation wireless LAN system (IEEE 802.11be or EHT wireless LAN system) is supported.
- the next-generation wireless LAN system is a wireless LAN system improved from the 802.11ax system, and may satisfy backward compatibility with the 802.11ax system.
- This embodiment proposes a method of configuring a trigger frame and a TB PPDU that simultaneously support spatial reuse of an 802.11ax (or HE) wireless LAN system and an 802.11be (or EHT) wireless LAN system.
- 802.11ax or HE
- 802.11be or EHT
- a receiving STA receives a trigger frame from a transmitting STA.
- the receiving STA transmits a TB PPDU (Trigger Based Physical Protocol Data Unit) to the transmitting STA through a preset frequency band.
- a TB PPDU Trigger Based Physical Protocol Data Unit
- the trigger frame includes a common information field and a special user information field.
- the common information field includes first to fourth spatial reuse fields.
- the special user information field includes fifth and sixth spatial reuse fields.
- the common information field is an EHT variant Common Info field, and includes four spatial reuse fields (HSR1, HSR2, HSR3, HSR4).
- the four spatial reuse fields (HSR1, HSR2, HSR3, and HSR4) are defined for spatial reuse of the OBSS HE STA.
- the special user information field is included in the trigger frame when an Association Identifier (AID) is 2007, and includes two spatial reuse fields ESR1 and ESR2.
- the two spatial reuse fields (ESR1, ESR2) are defined for spatial reuse of an OBSS EHT STA.
- the OBSS HE STA may determine that the trigger frame triggers a 20 MHz HE TB PPDU.
- the first and third spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers a 40 MHz HE TB PPDU.
- the first and second spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers an 80 MHz HE TB PPDU.
- the first and second spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers a 160 MHz HE TB PPDU.
- the OBSS HE STA may determine that the trigger frame triggers a 160 MHz HE TB PPDU. Since the OBSS HE STA can operate in one 160 MHz channel among the two 160 MHz channels through which the EHT TB PPDU is transmitted, the HSR value must be a value that can represent both 160 MHz channels. In this case, it is preferable to set the HSR value to the value of the weak channel because it is possible to reduce the interference by lowering the transmission power of the OBSS STA.
- the transmitting STA informs the OBSS STA of an allowable interference power value for a specific band (or specific channel) through a spatial reuse value, and the OBSS STA informs the OBSS STA of the interference power value and the AP TX
- a signal may be transmitted by deriving transmission power using the value of the Power subfield and performing spatial reuse in the specific band (or specific channel).
- the transmitting STA may not receive interference due to the OBSS STA when receiving the TB PPDU. That is, by enabling spatial reuse of the OBSS STA, the present embodiment has the effect of improving throughput and efficiency by stably using transmission resources for a specific band without collision.
- FIG. 1 shows an example of a transmitting apparatus and/or a receiving apparatus of the present specification.
- WLAN wireless local area network
- 3 is a view for explaining a general link setup process.
- FIG. 4 is a diagram illustrating an example of a PPDU used in the IEEE standard.
- FIG. 5 is a diagram illustrating an arrangement of resource units (RUs) used on a 20 MHz band.
- FIG. 6 is a diagram illustrating an arrangement of a resource unit (RU) used on a 40 MHz band.
- RU resource unit
- FIG. 7 is a diagram illustrating an arrangement of resource units (RUs) used on an 80 MHz band.
- FIG 9 shows an example in which a plurality of user STAs are allocated to the same RU through the MU-MIMO technique.
- FIG. 10 shows an example of a PPDU used in this specification.
- FIG. 11 shows a modified example of a transmitting apparatus and/or a receiving apparatus of the present specification.
- FIG. 12 is a diagram showing the effect of increasing and decreasing transmit power and sensitivity in WLAN.
- FIG. 13 is an example illustrating a CS area in a wireless LAN system.
- 14 is a graph illustrating an adjustment rule for OBSS/PD and transmit power.
- 15 shows an operation according to UL-MU.
- 16 shows an example of a common information field of a trigger frame.
- FIG 17 shows another example of a common information field of a trigger frame.
- FIG. 21 shows an example in which a TB A-PPDU is transmitted.
- 22 is a flowchart illustrating the operation of the transmitting apparatus according to the present embodiment.
- FIG. 23 is a flowchart illustrating the operation of the receiving apparatus according to the present embodiment.
- 24 is a flowchart illustrating a procedure in which an AP configures a trigger frame and a TB PPDU supporting spatial reuse according to the present embodiment.
- 25 is a flowchart illustrating a procedure for an STA to configure a trigger frame and a TB PPDU supporting spatial reuse according to the present embodiment.
- a or B (A or B) may mean “only A”, “only B” or “both A and B”.
- a or B (A or B)” may be interpreted as “A and/or B (A and/or B)”.
- A, B or C (A, B or C)” herein means “only A,” “only B,” “only C,” or “any and any combination of A, B and C. combination of A, B and C)”.
- a slash (/) or a comma (comma) may mean “and/or”.
- A/B may mean “and/or B”.
- A/B may mean “only A”, “only B”, or “both A and B”.
- A, B, C may mean “A, B, or C”.
- At least one of A and B may mean “only A”, “only B” or “both A and B”.
- the expression “at least one of A or B” or “at least one of A and/or B” means “at least one It can be interpreted the same as “at least one of A and B”.
- At least one of A, B and C means “only A”, “only B”, “only C” or “of A, B and C”. any combination of A, B and C”. Also, “at least one of A, B or C” or “at least one of A, B and/or C” means may mean “at least one of A, B and C”.
- control information EHT-Signal
- EHT-Signal when displayed as “control information (EHT-Signal)”, “EHT-Signal” may be proposed as an example of “control information”.
- control information of the present specification is not limited to “EHT-Signal”, and “EHT-Signal” may be proposed as an example of “control information”.
- control information ie, EHT-signal
- EHT-Signal even when displayed as “control information (ie, EHT-signal)”, “EHT-Signal” may be proposed as an example of “control information”.
- the following examples of the present specification may be applied to various wireless communication systems.
- the following example of the present specification may be applied to a wireless local area network (WLAN) system.
- the present specification may be applied to the IEEE 802.11a/g/n/ac standard or the IEEE 802.11ax standard.
- this specification may be applied to the newly proposed EHT standard or IEEE 802.11be standard.
- an example of the present specification may be applied to a new wireless LAN standard that is an enhancement of the EHT standard or IEEE 802.11be.
- an example of the present specification may be applied to a mobile communication system.
- LTE Long Term Evolution
- 3GPP 3rd Generation Partnership Project
- an example of the present specification may be applied to a communication system of the 5G NR standard based on the 3GPP standard.
- FIG. 1 shows an example of a transmitting apparatus and/or a receiving apparatus of the present specification.
- the example of FIG. 1 may perform various technical features described below.
- 1 relates to at least one STA (station).
- the STAs 110 and 120 of the present specification are a mobile terminal, a wireless device, a wireless transmit/receive unit (WTRU), a user equipment (UE), It may also be called by various names such as a mobile station (MS), a mobile subscriber unit, or simply a user.
- the STAs 110 and 120 of the present specification may be referred to by various names such as a network, a base station, a Node-B, an access point (AP), a repeater, a router, and a relay.
- the STAs 110 and 120 may be referred to by various names such as a receiving device, a transmitting device, a receiving STA, a transmitting STA, a receiving device, and a transmitting device.
- the STAs 110 and 120 may perform an access point (AP) role or a non-AP role. That is, the STAs 110 and 120 of the present specification may perform AP and/or non-AP functions.
- AP access point
- an AP may also be indicated as an AP STA.
- the STAs 110 and 120 of the present specification may support various communication standards other than the IEEE 802.11 standard.
- a communication standard eg, LTE, LTE-A, 5G NR standard
- the STA of the present specification may be implemented in various devices such as a mobile phone, a vehicle, and a personal computer.
- the STA of the present specification may support communication for various communication services such as voice call, video call, data communication, and autonomous driving (self-driving, autonomous-driving).
- the STAs 110 and 120 may include a medium access control (MAC) conforming to the IEEE 802.11 standard and a physical layer interface for a wireless medium.
- MAC medium access control
- the STAs 110 and 120 will be described based on the sub-view (a) of FIG. 1 as follows.
- the first STA 110 may include a processor 111 , a memory 112 , and a transceiver 113 .
- the illustrated processor, memory, and transceiver may each be implemented as separate chips, or at least two or more blocks/functions may be implemented through one chip.
- the transceiver 113 of the first STA performs a signal transmission/reception operation. Specifically, IEEE 802.11 packets (eg, IEEE 802.11a/b/g/n/ac/ax/be, etc.) may be transmitted/received.
- IEEE 802.11 packets eg, IEEE 802.11a/b/g/n/ac/ax/be, etc.
- the first STA 110 may perform an intended operation of the AP.
- the processor 111 of the AP may receive a signal through the transceiver 113 , process the received signal, generate a transmission signal, and perform control for signal transmission.
- the memory 112 of the AP may store a signal (ie, a received signal) received through the transceiver 113 and may store a signal to be transmitted through the transceiver (ie, a transmission signal).
- the second STA 120 may perform an intended operation of a non-AP STA.
- the transceiver 123 of the non-AP performs a signal transmission/reception operation.
- IEEE 802.11 packets eg, IEEE 802.11a/b/g/n/ac/ax/be, etc.
- IEEE 802.11a/b/g/n/ac/ax/be, etc. may be transmitted/received.
- the processor 121 of the non-AP STA may receive a signal through the transceiver 123 , process the received signal, generate a transmission signal, and perform control for signal transmission.
- the memory 122 of the non-AP STA may store a signal (ie, a received signal) received through the transceiver 123 and may store a signal (ie, a transmission signal) to be transmitted through the transceiver.
- an operation of a device denoted as an AP in the following specification may be performed by the first STA 110 or the second STA 120 .
- the operation of the device marked as AP is controlled by the processor 111 of the first STA 110 , and is controlled by the processor 111 of the first STA 110 .
- Related signals may be transmitted or received via the controlled transceiver 113 .
- control information related to an operation of the AP or a transmission/reception signal of the AP may be stored in the memory 112 of the first STA 110 .
- the operation of the device indicated by the AP is controlled by the processor 121 of the second STA 120 and controlled by the processor 121 of the second STA 120 .
- a related signal may be transmitted or received via the transceiver 123 .
- control information related to an operation of the AP or a transmission/reception signal of the AP may be stored in the memory 122 of the second STA 110 .
- an operation of a device indicated as a non-AP in the following specification may be performed by the first STA 110 or the second STA 120 .
- the operation of the device marked as non-AP is controlled by the processor 121 of the second STA 120, and the processor ( A related signal may be transmitted or received via the transceiver 123 controlled by 121 .
- control information related to the operation of the non-AP or the AP transmit/receive signal may be stored in the memory 122 of the second STA 120 .
- the operation of the device marked as non-AP is controlled by the processor 111 of the first STA 110 , and the processor ( Related signals may be transmitted or received via transceiver 113 controlled by 111 .
- control information related to the operation of the non-AP or the AP transmit/receive signal may be stored in the memory 112 of the first STA 110 .
- transmission / reception STA STA, first STA, second STA, STA1, STA2, AP, first AP, second AP, AP1, AP2, (transmission / reception) Terminal, (transmission / reception) device , (transmission/reception) apparatus, a device called a network, etc. may refer to the STAs 110 and 120 of FIG. 1 .
- a device denoted by a /receiver) device, a (transmit/receive) apparatus, and a network may also refer to the STAs 110 and 120 of FIG. 1 .
- an operation in which various STAs transmit and receive signals may be performed by the transceivers 113 and 123 of FIG. 1 .
- an operation in which various STAs generate a transmit/receive signal or perform data processing or calculation in advance for the transmit/receive signal may be performed by the processors 111 and 121 of FIG. 1 .
- an example of an operation of generating a transmission/reception signal or performing data processing or operation in advance for a transmission/reception signal is 1) Determining bit information of a subfield (SIG, STF, LTF, Data) field included in a PPDU /Acquisition/configuration/computation/decoding/encoding operation, 2) time resource or frequency resource (eg, subcarrier resource) used for the subfield (SIG, STF, LTF, Data) field included in the PPDU, etc.
- a power control operation and / or a power saving operation applied to the STA may include
- various information used by various STAs for determination/acquisition/configuration/computation/decoding/encoding of transmit/receive signals may be stored in the memories 112 and 122 of FIG. 1 .
- the device/STA of the sub-view (a) of FIG. 1 described above may be modified as shown in the sub-view (b) of FIG. 1 .
- the STAs 110 and 120 of the present specification will be described based on the sub-drawing (b) of FIG. 1 .
- the transceivers 113 and 123 shown in (b) of FIG. 1 may perform the same function as the transceivers shown in (a) of FIG. 1 .
- the processing chips 114 and 124 illustrated in (b) of FIG. 1 may include processors 111 and 121 and memories 112 and 122 .
- the processors 111 and 121 and the memories 112 and 122 shown in (b) of FIG. 1 are the processors 111 and 121 and the memories 112 and 122 shown in (a) of FIG. ) can perform the same function.
- a technical feature in which a transmitting STA transmits a control signal is that the control signal generated by the processors 111 and 121 shown in the sub-drawing (a)/(b) of FIG. 1 is (a) of FIG. ) / (b) can be understood as a technical feature transmitted through the transceivers 113 and 123 shown in (b).
- the technical feature in which the transmitting STA transmits the control signal is a technical feature in which the control signal to be transmitted to the transceivers 113 and 123 is generated from the processing chips 114 and 124 shown in the sub-view (b) of FIG. can be understood
- the technical feature in which the receiving STA receives the control signal may be understood as the technical feature in which the control signal is received by the transceivers 113 and 123 shown in the sub-drawing (a) of FIG. 1 .
- the technical feature that the receiving STA receives the control signal is that the control signal received by the transceivers 113 and 123 shown in the sub-drawing (a) of FIG. 1 is the processor shown in (a) of FIG. 111, 121) can be understood as a technical feature obtained by.
- the technical feature that the receiving STA receives the control signal is that the control signal received by the transceivers 113 and 123 shown in the sub-view (b) of FIG. 1 is the processing chip shown in the sub-view (b) of FIG. It can be understood as a technical feature obtained by (114, 124).
- software codes 115 and 125 may be included in the memories 112 and 122 .
- the software codes 115 and 125 may include instructions for controlling the operations of the processors 111 and 121 .
- Software code 115, 125 may be included in a variety of programming languages.
- the processors 111 and 121 or the processing chips 114 and 124 shown in FIG. 1 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and/or data processing devices.
- the processor may be an application processor (AP).
- the processors 111 and 121 or the processing chips 114 and 124 shown in FIG. 1 may include a digital signal processor (DSP), a central processing unit (CPU), a graphics processing unit (GPU), and a modem (Modem). and demodulator).
- DSP digital signal processor
- CPU central processing unit
- GPU graphics processing unit
- Modem modem
- demodulator demodulator
- SNAPDRAGONTM series processor manufactured by Qualcomm®, an EXYNOSTM series processor manufactured by Samsung®, and a processor manufactured by Apple®. It may be an A series processor, a HELIOTM series processor manufactured by MediaTek®, an ATOMTM series processor manufactured by INTEL®, or a processor enhanced therewith.
- uplink may mean a link for communication from a non-AP STA to an AP STA, and an uplink PPDU/packet/signal may be transmitted through the uplink.
- downlink may mean a link for communication from an AP STA to a non-AP STA, and a downlink PPDU/packet/signal may be transmitted through the downlink.
- WLAN wireless local area network
- FIG. 2 shows the structure of an infrastructure basic service set (BSS) of the Institute of Electrical and Electronic Engineers (IEEE) 802.11.
- BSS infrastructure basic service set
- IEEE Institute of Electrical and Electronic Engineers
- a WLAN system may include one or more infrastructure BSSs 200 and 205 (hereinafter, BSSs).
- BSSs 200 and 205 are a set of APs and STAs, such as an access point (AP) 225 and a station 200-1 (STA1) that can communicate with each other through successful synchronization, and are not a concept indicating a specific area.
- the BSS 205 may include one or more combinable STAs 205 - 1 and 205 - 2 to one AP 230 .
- the BSS may include at least one STA, APs 225 and 230 that provide a distribution service, and a distribution system DS 210 that connects a plurality of APs.
- the distributed system 210 may implement an extended service set (ESS) 240 that is an extended service set by connecting several BSSs 200 and 205 .
- ESS 240 may be used as a term indicating one network in which one or several APs are connected through the distributed system 210 .
- APs included in one ESS 240 may have the same service set identification (SSID).
- the portal 220 may serve as a bridge connecting a wireless LAN network (IEEE 802.11) and another network (eg, 802.X).
- IEEE 802.11 IEEE 802.11
- 802.X another network
- a network between the APs 225 and 230 and a network between the APs 225 and 230 and the STAs 200 - 1 , 205 - 1 and 205 - 2 may be implemented.
- a network that establishes a network and performs communication even between STAs without the APs 225 and 230 is defined as an ad-hoc network or an independent basic service set (IBSS).
- FIG. 2 The lower part of FIG. 2 is a conceptual diagram illustrating the IBSS.
- the IBSS is a BSS operating in an ad-hoc mode. Since the IBSS does not include an AP, there is no centralized management entity that performs a centralized management function. That is, in the IBSS, the STAs 250-1, 250-2, 250-3, 255-4, and 255-5 are managed in a distributed manner. In IBSS, all STAs (250-1, 250-2, 250-3, 255-4, 255-5) can be mobile STAs, and access to a distributed system is not allowed, so a self-contained network network) is formed.
- 3 is a view for explaining a general link setup process.
- the STA may perform a network discovery operation.
- the network discovery operation may include a scanning operation of the STA. That is, in order for the STA to access the network, it must find a network in which it can participate. An STA must identify a compatible network before participating in a wireless network. The process of identifying a network existing in a specific area is called scanning. Scanning methods include active scanning and passive scanning.
- an STA performing scanning transmits a probe request frame to discover which APs exist around it while moving channels, and waits for a response thereto.
- a responder transmits a probe response frame to the STA that has transmitted the probe request frame in response to the probe request frame.
- the responder may be an STA that last transmitted a beacon frame in the BSS of the channel being scanned.
- the AP since the AP transmits a beacon frame, the AP becomes the responder.
- the STAs in the IBSS rotate and transmit the beacon frame, so the responder is not constant.
- an STA that transmits a probe request frame on channel 1 and receives a probe response frame on channel 1 stores BSS-related information included in the received probe response frame and channel) to perform scanning (ie, probe request/response transmission/reception on channel 2) in the same way.
- the scanning operation may be performed in a passive scanning manner.
- An STA performing scanning based on passive scanning may wait for a beacon frame while moving channels.
- the beacon frame is one of the management frames in IEEE 802.11, and is periodically transmitted to inform the existence of a wireless network, and to allow a scanning STA to search for a wireless network and participate in the wireless network.
- the AP plays a role of periodically transmitting a beacon frame, and in the IBSS, the STAs in the IBSS rotate and transmit the beacon frame.
- the STA performing scanning receives the beacon frame, it stores information on the BSS included in the beacon frame and records beacon frame information in each channel while moving to another channel.
- the STA may store BSS-related information included in the received beacon frame, move to the next channel, and perform scanning on the next channel in the same manner.
- the STA discovering the network may perform an authentication process through step S320.
- This authentication process may be referred to as a first authentication process in order to clearly distinguish it from the security setup operation of step S340 to be described later.
- the authentication process of S320 may include a process in which the STA transmits an authentication request frame to the AP, and in response, the AP transmits an authentication response frame to the STA.
- An authentication frame used for an authentication request/response corresponds to a management frame.
- the authentication frame includes an authentication algorithm number, an authentication transaction sequence number, a status code, a challenge text, a Robust Security Network (RSN), and a Finite Cyclic Group), etc. may be included.
- RSN Robust Security Network
- Finite Cyclic Group Finite Cyclic Group
- the STA may transmit an authentication request frame to the AP.
- the AP may determine whether to allow authentication for the corresponding STA based on information included in the received authentication request frame.
- the AP may provide the result of the authentication process to the STA through the authentication response frame.
- the successfully authenticated STA may perform a connection process based on step S330.
- the association process includes a process in which the STA transmits an association request frame to the AP, and in response, the AP transmits an association response frame to the STA.
- the connection request frame includes information related to various capabilities, a beacon listening interval, a service set identifier (SSID), supported rates, supported channels, RSN, and mobility domain. , supported operating classes, TIM broadcast request (Traffic Indication Map Broadcast request), interworking service capability, and the like may be included.
- connection response frame includes information related to various capabilities, status codes, Association IDs (AIDs), support rates, Enhanced Distributed Channel Access (EDCA) parameter sets, Received Channel Power Indicator (RCPI), Received Signal to Noise (RSNI). indicator), mobility domain, timeout interval (association comeback time), overlapping BSS scan parameters, TIM broadcast response, QoS map, and the like.
- AIDs Association IDs
- EDCA Enhanced Distributed Channel Access
- RCPI Received Channel Power Indicator
- RSNI Received Signal to Noise
- indicator mobility domain
- timeout interval association comeback time
- overlapping BSS scan parameters TIM broadcast response
- QoS map QoS map
- step S340 the STA may perform a security setup process.
- the security setup process of step S340 may include, for example, a process of private key setup through 4-way handshaking through an Extensible Authentication Protocol over LAN (EAPOL) frame. .
- EAPOL Extensible Authentication Protocol over LAN
- FIG. 4 is a diagram illustrating an example of a PPDU used in the IEEE standard.
- PPDUs PHY protocol data units
- the LTF and STF fields included a training signal
- SIG-A and SIG-B included control information for the receiving station
- the data field included user data corresponding to MAC PDU/Aggregated MAC PDU (PSDU). included
- the HE PPDU according to FIG. 4 is an example of a PPDU for multiple users.
- HE-SIG-B may be included only for multiple users, and the corresponding HE-SIG-B may be omitted from the PPDU for a single user.
- HE-PPDU for multiple users is L-STF (legacy-short training field), L-LTF (legacy-long training field), L-SIG (legacy-signal), HE-SIG-A (high efficiency-signal A), HE-SIG-B (high efficiency-signal-B), HE-STF (high efficiency-short training field), HE-LTF (high efficiency-long training field) , a data field (or MAC payload) and a packet extension (PE) field.
- Each field may be transmitted during the illustrated time interval (ie, 4 or 8 ⁇ s, etc.).
- a resource unit may include a plurality of subcarriers (or tones).
- the resource unit may be used when transmitting a signal to a plurality of STAs based on the OFDMA technique.
- a resource unit may be defined even when a signal is transmitted to one STA.
- the resource unit may be used for STF, LTF, data field, and the like.
- FIG. 5 is a diagram illustrating an arrangement of resource units (RUs) used on a 20 MHz band.
- resource units corresponding to different numbers of tones (ie, subcarriers) may be used to configure some fields of the HE-PPDU.
- resources may be allocated in units of RUs shown for HE-STF, HE-LTF, and data fields.
- 26-units ie, units corresponding to 26 tones
- Six tones may be used as a guard band in the leftmost band of the 20 MHz band
- 5 tones may be used as a guard band in the rightmost band of the 20 MHz band.
- 7 DC tones are inserted into the center band, that is, the DC band
- 26-units corresponding to each of 13 tones may exist on the left and right sides of the DC band.
- 26-units, 52-units, and 106-units may be allocated to other bands.
- Each unit may be assigned for a receiving station, ie a user.
- the RU arrangement of FIG. 5 is utilized not only in a situation for multiple users (MU), but also in a situation for a single user (SU), in this case, as shown in the lowermost part of FIG. 5 , one 242-unit is used. It is possible to use and in this case 3 DC tones can be inserted.
- RUs of various sizes ie, 26-RU, 52-RU, 106-RU, 242-RU, etc.
- this embodiment is not limited to the specific size of each RU (ie, the number of corresponding tones).
- FIG. 6 is a diagram illustrating an arrangement of a resource unit (RU) used on a 40 MHz band.
- RU resource unit
- RUs of various sizes are used, and in the example of FIG. 6 , 26-RU, 52-RU, 106-RU, 242-RU, 484-RU, etc. may be used.
- 5 DC tones may be inserted into the center frequency, 12 tones are used as a guard band in the leftmost band of the 40 MHz band, and 11 tones are used in the rightmost band of the 40 MHz band. This can be used as a guard band.
- 484-RU when used for a single user, 484-RU may be used. Meanwhile, the fact that the specific number of RUs can be changed is the same as in the example of FIG. 4 .
- FIG. 7 is a diagram illustrating an arrangement of resource units (RUs) used on an 80 MHz band.
- 26-RU, 52-RU, 106-RU, 242-RU, 484-RU, 996-RU, etc. may be used. have.
- 7 DC tones may be inserted into the center frequency, 12 tones are used as a guard band in the leftmost band of the 80 MHz band, and 11 tones are used in the rightmost band of the 80 MHz band. This can be used as a guard band.
- 26-RU using 13 tones located on the left and right of the DC band can be used.
- 996-RU when used for a single user, 996-RU may be used, and in this case, 5 DC tones may be inserted.
- the RU described in this specification may be used for uplink (UL) communication and downlink (DL) communication.
- a transmitting STA eg, AP
- a first RU eg, 26/52/106
- a second RU eg, 26/52/106/242-RU, etc.
- the first STA may transmit a first trigger-based PPDU based on the first RU
- the second STA may transmit a second trigger-based PPDU based on the second RU.
- the first/second trigger-based PPDUs are transmitted to the AP in the same time interval.
- the transmitting STA (eg, AP) allocates a first RU (eg, 26/52/106/242-RU, etc.) to the first STA, and A second RU (eg, 26/52/106/242-RU, etc.) may be allocated to the 2 STAs. That is, the transmitting STA (eg, AP) may transmit the HE-STF, HE-LTF, and Data fields for the first STA through the first RU within one MU PPDU, and the second through the second RU. HE-STF, HE-LTF, and Data fields for 2 STAs may be transmitted.
- HE-SIG-B Information on the arrangement of the RU may be signaled through HE-SIG-B.
- the HE-SIG-B field 810 includes a common field 820 and a user-specific field 830 .
- the common field 820 may include information commonly applied to all users (ie, user STAs) receiving SIG-B.
- the user-individual field 830 may be referred to as a user-individual control field.
- the user-individual field 830 may be applied only to some of the plurality of users when the SIG-B is delivered to a plurality of users.
- the common field 820 and the user-individual field 830 may be separately encoded.
- the common field 820 may include N*8 bits of RU allocation information.
- the RU allocation information may include information about the location of the RU. For example, when a 20 MHz channel is used as shown in FIG. 5, the RU allocation information may include information on which RUs (26-RU/52-RU/106-RU) are disposed in which frequency band. .
- a maximum of nine 26-RUs may be allocated to a 20 MHz channel.
- Table 1 when the RU allocation information of the common field 820 is set to '00000000', nine 26-RUs may be allocated to a corresponding channel (ie, 20 MHz).
- Table 1 when the RU allocation information of the common field 820 is set to '00000001', seven 26-RUs and one 52-RU are arranged in a corresponding channel. That is, in the example of FIG. 5 , 52-RUs may be allocated to the rightmost side, and seven 26-RUs may be allocated to the left side thereof.
- Table 1 shows only some of the RU locations that can be indicated by the RU allocation information.
- the RU allocation information may further include an example of Table 2 below.
- “01000y2y1y0” relates to an example in which 106-RU is allocated to the leftmost side of a 20 MHz channel, and 5 26-RUs are allocated to the right side thereof.
- a plurality of STAs eg, User-STAs
- a maximum of 8 STAs eg, User-STAs
- the number of STAs eg, User-STAs allocated to the 106-RU is 3-bit information (y2y1y0).
- the number of STAs (eg, User-STAs) allocated to the 106-RU based on the MU-MIMO technique may be N+1.
- a plurality of different STAs may be allocated to a plurality of RUs.
- a plurality of STAs may be allocated to one RU having a specific size (eg, 106 subcarriers) or more based on the MU-MIMO technique.
- the user-individual field 830 may include a plurality of user fields.
- the number of STAs (eg, user STAs) allocated to a specific channel may be determined based on the RU allocation information of the common field 820 .
- the RU allocation information of the common field 820 is '00000000'
- one user STA may be allocated to each of the nine 26-RUs (that is, a total of nine user STAs are allocated). That is, up to 9 user STAs may be allocated to a specific channel through the OFDMA technique. In other words, up to 9 user STAs may be allocated to a specific channel through the non-MU-MIMO technique.
- a plurality of user STAs are allocated to the 106-RU disposed on the left-most side through the MU-MIMO technique, and five 26-RUs disposed on the right side have Five user STAs may be allocated through the non-MU-MIMO technique. This case is embodied through an example of FIG. 9 .
- FIG 9 shows an example in which a plurality of user STAs are allocated to the same RU through the MU-MIMO technique.
- RU allocation is set to “01000010” as shown in FIG. 9, based on Table 2, 106-RU is allocated to the leftmost side of a specific channel and 5 26-RUs are allocated to the right side of the channel.
- a total of three user STAs may be allocated to the 106-RU through the MU-MIMO technique.
- the user-individual field 830 of HE-SIG-B may include 8 User fields.
- Eight user fields may be included in the order shown in FIG. 9 . Also, as shown in FIG. 8 , two user fields may be implemented as one user block field.
- the User field shown in FIGS. 8 and 9 may be configured based on two formats. That is, the user field related to the MU-MIMO technique may be configured in the first format, and the user field related to the non-MU-MIMO technique may be configured in the second format.
- User fields 1 to 3 may be based on a first format
- User fields 4 to 8 may be based on a second format.
- the first format or the second format may include bit information of the same length (eg, 21 bits).
- Each user field may have the same size (eg, 21 bits).
- the user field of the first format (the format of the MU-MIMO technique) may be configured as follows.
- the first bit (eg, B0-B10) in the user field is identification information of the user STA to which the corresponding user field is allocated (eg, STA-ID, partial AID, etc.) may include.
- the second bit (eg, B11-B14) in the user field (ie, 21 bits) may include information about spatial configuration.
- the third bit (ie, B15-18) in the user field (ie, 21 bits) may include modulation and coding scheme (MCS) information.
- MCS modulation and coding scheme
- the MCS information may be applied to a data field in the PPDU including the corresponding SIG-B.
- MCS MCS information
- MCS index MCS field, etc. used in this specification may be indicated by a specific index value.
- MCS information may be indicated by index 0 to index 11.
- MCS information includes information about a constellation modulation type (eg, BPSK, QPSK, 16-QAM, 64-QAM, 256-QAM, 1024-QAM, etc.), and a coding rate (eg, 1/2, 2/ 3, 3/4, 5/6, etc.).
- a channel coding type eg, BCC or LDPC
- the fourth bit (ie, B19) in the User field (ie, 21 bits) may be a Reserved field.
- a fifth bit (ie, B20) in the user field may include information about a coding type (eg, BCC or LDPC). That is, the fifth bit (ie, B20) may include information on the type of channel coding (eg, BCC or LDPC) applied to the data field in the PPDU including the corresponding SIG-B.
- a coding type eg, BCC or LDPC
- the above-described example relates to the User Field of the first format (the format of the MU-MIMO technique).
- An example of the user field of the second format (the format of the non-MU-MIMO technique) is as follows.
- the first bit (eg, B0-B10) in the user field of the second format may include identification information of the user STA.
- the second bit (eg, B11-B13) in the user field of the second format may include information about the number of spatial streams applied to the corresponding RU.
- the third bit (eg, B14) in the user field of the second format may include information on whether a beamforming steering matrix is applied.
- a fourth bit (eg, B15-B18) in the user field of the second format may include modulation and coding scheme (MCS) information.
- a fifth bit (eg, B19) in the user field of the second format may include information on whether Dual Carrier Modulation (DCM) is applied.
- the sixth bit (ie, B20) in the user field of the second format may include information about a coding type (eg, BCC or LDPC).
- FIG. 10 shows an example of a PPDU used in this specification.
- the PPDU of FIG. 10 may be called by various names such as an EHT PPDU, a transmission PPDU, a reception PPDU, a first type or an Nth type PPDU.
- a PPDU or an EHT PPDU may be referred to as various names such as a transmission PPDU, a reception PPDU, a first type or an Nth type PPDU.
- the EHT PPU may be used in an EHT system and/or a new wireless LAN system in which the EHT system is improved.
- the PPDU of FIG. 10 may represent some or all of the PPDU types used in the EHT system.
- the example of FIG. 10 may be used for both a single-user (SU) mode and a multi-user (MU) mode.
- the PPDU of FIG. 10 may be a PPDU for one receiving STA or a plurality of receiving STAs.
- the EHT-SIG of FIG. 10 may be omitted.
- the STA that has received the trigger frame for uplink-MU (UL-MU) communication may transmit a PPDU in which the EHT-SIG is omitted in the example of FIG. 10 .
- L-STF to EHT-LTF may be referred to as a preamble or a physical preamble, and may be generated/transmitted/received/acquired/decoded in a physical layer.
- the subcarrier spacing of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and EHT-SIG fields of FIG. 10 is set to 312.5 kHz, and the subcarrier spacing of the EHT-STF, EHT-LTF, and Data fields may be set to 78.125 kHz. That is, the tone index (or subcarrier index) of the L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and EHT-SIG fields is displayed in units of 312.5 kHz, EHT-STF, EHT-LTF, The tone index (or subcarrier index) of the Data field may be displayed in units of 78.125 kHz.
- L-LTF and L-STF may be the same as the conventional fields.
- the L-SIG field of FIG. 10 may include, for example, 24-bit bit information.
- 24-bit information may include a 4-bit Rate field, a 1-bit Reserved bit, a 12-bit Length field, a 1-bit Parity bit, and a 6-bit Tail bit.
- the 12-bit Length field may include information about the length or time duration of the PPDU.
- the value of the 12-bit Length field may be determined based on the type of the PPDU. For example, when the PPDU is a non-HT, HT, VHT PPDU or an EHT PPDU, the value of the Length field may be determined as a multiple of 3.
- the value of the Length field may be determined as “a multiple of + 1” or “a multiple of +2”.
- the value of the Length field may be determined as a multiple of 3
- the value of the Length field may be “a multiple of 3 + 1” or a multiple of “+ 2” can be determined.
- the transmitting STA may apply BCC encoding based on a code rate of 1/2 to 24-bit information of the L-SIG field. Thereafter, the transmitting STA may obtain a 48-bit BCC encoding bit. BPSK modulation may be applied to 48-bit coded bits to generate 48 BPSK symbols. The transmitting STA may map 48 BPSK symbols to positions excluding pilot subcarriers ⁇ subcarrier indexes -21, -7, +7, +21 ⁇ and DC subcarriers ⁇ subcarrier index 0 ⁇ .
- the transmitting STA may additionally map signals of ⁇ -1, -1, -1, 1 ⁇ to the subcarrier indexes ⁇ -28, -27, +27, 28 ⁇ .
- the above signal can be used for channel estimation in the frequency domain corresponding to ⁇ -28, -27, +27, 28 ⁇ .
- the transmitting STA may generate the RL-SIG generated in the same way as the L-SIG.
- BPSK modulation is applied.
- the receiving STA may know that the received PPDU is an HE PPDU or an EHT PPDU based on the existence of the RL-SIG.
- a universal SIG (U-SIG) may be inserted.
- the U-SIG may be referred to by various names such as a first SIG field, a first SIG, a first type SIG, a control signal, a control signal field, and a first (type) control signal.
- the U-SIG may include information of N bits, and may include information for identifying the type of the EHT PPDU.
- the U-SIG may be configured based on two symbols (eg, two consecutive OFDM symbols).
- Each symbol (eg, OFDM symbol) for U-SIG may have a duration of 4 us.
- Each symbol of the U-SIG may be used to transmit 26-bit information.
- each symbol of the U-SIG may be transmitted/received based on 52 data tones and 4 pilot tones.
- A-bit information (eg, 52 un-coded bits) may be transmitted through the U-SIG (or U-SIG field), and the first symbol of the U-SIG is the first of the total A-bit information.
- X-bit information (eg, 26 un-coded bits) is transmitted, and the second symbol of U-SIG can transmit the remaining Y-bit information (eg, 26 un-coded bits) of the total A-bit information.
- the transmitting STA may obtain 26 un-coded bits included in each U-SIG symbol.
- the transmitting STA may generate 52 BPSK symbols allocated to each U-SIG symbol by performing BPSK modulation on the interleaved 52-coded bits.
- One U-SIG symbol may be transmitted based on 56 tones (subcarriers) from subcarrier index -28 to subcarrier index +28, except for DC index 0.
- the 52 BPSK symbols generated by the transmitting STA may be transmitted based on the remaining tones (subcarriers) excluding pilot tones -21, -7, +7, and +21 tones.
- A-bit information (eg, 52 un-coded bits) transmitted by U-SIG includes a CRC field (eg, a 4-bit long field) and a tail field (eg, a 6-bit long field). ) may be included.
- the CRC field and the tail field may be transmitted through the second symbol of the U-SIG.
- the CRC field may be generated based on the remaining 16 bits except for the CRC/tail field in the 26 bits allocated to the first symbol of the U-SIG and the second symbol, and may be generated based on the conventional CRC calculation algorithm.
- the tail field may be used to terminate the trellis of the convolutional decoder, and may be set, for example, to “”.
- a bit information (eg, 52 un-coded bits) transmitted by U-SIG may be divided into version-independent bits and version-dependent bits.
- the size of the version-independent bits may be fixed or variable.
- the version-independent bits may be allocated only to the first symbol of the U-SIG, or the version-independent bits may be allocated to both the first symbol and the second symbol of the U-SIG.
- the version-independent bits and the version-dependent bits may be referred to by various names such as a first control bit and a second control bit.
- the version-independent bits of the U-SIG may include a 3-bit PHY version identifier.
- the 3-bit PHY version identifier may include information related to the PHY version of the transmission/reception PPDU.
- the first value of the 3-bit PHY version identifier may indicate that the transmission/reception PPDU is an EHT PPDU.
- the transmitting STA may set the 3-bit PHY version identifier as the first value.
- the receiving STA may determine that the receiving PPDU is an EHT PPDU based on the PHY version identifier having the first value.
- the version-independent bits of the U-SIG may include a 1-bit UL/DL flag field.
- a first value of the 1-bit UL/DL flag field is related to UL communication, and a second value of the UL/DL flag field is related to DL communication.
- the version-independent bits of the U-SIG may include information about the length of the TXOP and information about the BSS color ID.
- EHT PPDU when the EHT PPDU is divided into various types (eg, various types such as EHT PPDU related to SU mode, EHT PPDU related to MU mode, EHT PPDU related to TB mode, EHT PPDU related to Extended Range transmission) , information on the type of the EHT PPDU may be included in the version-dependent bits of the U-SIG.
- various types eg, various types such as EHT PPDU related to SU mode, EHT PPDU related to MU mode, EHT PPDU related to TB mode, EHT PPDU related to Extended Range transmission
- information on the type of the EHT PPDU may be included in the version-dependent bits of the U-SIG.
- the U-SIG is 1) a bandwidth field including information about bandwidth, 2) a field including information about an MCS technique applied to the EHT-SIG, 3) dual subcarrier modulation to the EHT-SIG (dual An indication field including information on whether subcarrier modulation, DCM) technique is applied, 4) a field including information on the number of symbols used for EHT-SIG, 5) EHT-SIG is generated over the entire band It may include a field including information on whether or not it is, 6) a field including information about the type of EHT-LTF/STF, and 7) information about a field indicating the length of the EHT-LTF and the CP length.
- Preamble puncturing may be applied to the PPDU of FIG. 10 .
- the preamble puncturing refers to applying puncturing to some bands (eg, the secondary 20 MHz band) among the entire bands of the PPDU. For example, when an 80 MHz PPDU is transmitted, the STA may apply puncturing to the secondary 20 MHz band among the 80 MHz band and transmit the PPDU only through the primary 20 MHz band and the secondary 40 MHz band.
- the pattern of preamble puncturing may be set in advance. For example, when the first puncturing pattern is applied, puncturing may be applied only to the secondary 20 MHz band within the 80 MHz band. For example, when the second puncturing pattern is applied, puncturing may be applied only to any one of the two secondary 20 MHz bands included in the secondary 40 MHz band within the 80 MHz band. For example, when the third puncturing pattern is applied, puncturing may be applied only to the secondary 20 MHz band included in the primary 80 MHz band within the 160 MHz band (or 80+80 MHz band).
- the primary 40 MHz band included in the primary 80 MHz band within the 160 MHz band (or 80+80 MHz band) is present and does not belong to the primary 40 MHz band. Puncture may be applied to at least one 20 MHz channel that is not
- Information on preamble puncturing applied to the PPDU may be included in the U-SIG and/or the EHT-SIG.
- the first field of the U-SIG includes information on the contiguous bandwidth of the PPDU
- the second field of the U-SIG includes information on the preamble puncturing applied to the PPDU. have.
- U-SIG and EHT-SIG may include information about preamble puncturing based on the following method.
- the U-SIG may be individually configured in units of 80 MHz.
- the corresponding PPDU may include a first U-SIG for the first 80 MHz band and a second U-SIG for the second 80 MHz band.
- the first field of the first U-SIG includes information about the 160 MHz bandwidth
- the second field of the first U-SIG includes information about the preamble puncturing applied to the first 80 MHz band (that is, the preamble information about the puncturing pattern).
- the first field of the second U-SIG includes information about the 160 MHz bandwidth
- the second field of the second U-SIG includes information about the preamble puncturing applied to the second 80 MHz band (ie, preamble puncture). information about processing patterns).
- the EHT-SIG subsequent to the first U-SIG may include information on preamble puncturing applied to the second 80 MHz band (that is, information on the preamble puncturing pattern), and in the second U-SIG
- the successive EHT-SIG may include information about preamble puncturing applied to the first 80 MHz band (ie, information about a preamble puncturing pattern).
- the U-SIG and the EHT-SIG may include information on preamble puncturing based on the following method.
- the U-SIG may include information on preamble puncturing for all bands (ie, information on preamble puncturing patterns). That is, the EHT-SIG does not include information about the preamble puncturing, and only the U-SIG may include information about the preamble puncturing (ie, information about the preamble puncturing pattern).
- the U-SIG may be configured in units of 20 MHz. For example, when an 80 MHz PPDU is configured, the U-SIG may be duplicated. That is, the same 4 U-SIGs may be included in the 80 MHz PPDU. PPDUs exceeding the 80 MHz bandwidth may include different U-SIGs.
- the EHT-SIG of FIG. 10 may include control information for the receiving STA.
- the EHT-SIG may be transmitted through at least one symbol, and one symbol may have a length of 4 us. Information on the number of symbols used for the EHT-SIG may be included in the U-SIG.
- the EHT-SIG may include technical features of the HE-SIG-B described with reference to FIGS. 8 to 9 .
- the EHT-SIG may include a common field and a user-specific field, as in the example of FIG. 8 .
- the common field of the EHT-SIG may be omitted, and the number of user-individual fields may be determined based on the number of users.
- the common field of the EHT-SIG and the user-individual field of the EHT-SIG may be individually coded.
- One user block field included in the user-individual field may contain information for two users, but the last user block field included in the user-individual field is for one user. It is possible to include information. That is, one user block field of the EHT-SIG may include a maximum of two user fields.
- each user field may be related to MU-MIMO assignment or may be related to non-MU-MIMO assignment.
- the common field of EHT-SIG may include a CRC bit and a Tail bit
- the length of the CRC bit may be determined as 4 bits
- the length of the Tail bit may be determined as 6 bits and set to '000000'. can be set.
- the common field of the EHT-SIG may include RU allocation information.
- the RU allocation information may refer to information about a location of an RU to which a plurality of users (ie, a plurality of receiving STAs) are allocated.
- RU allocation information may be configured in units of 8 bits (or N bits).
- a mode in which the common field of EHT-SIG is omitted may be supported.
- the mode in which the common field of EHT-SIG is omitted may be called compressed mode.
- a plurality of users (ie, a plurality of receiving STAs) of the EHT PPDU may decode the PPDU (eg, a data field of the PPDU) based on non-OFDMA. That is, a plurality of users of the EHT PPDU may decode a PPDU (eg, a data field of the PPDU) received through the same frequency band.
- a plurality of users of the EHT PPDU may decode the PPDU (eg, the data field of the PPDU) based on OFDMA. That is, a plurality of users of the EHT PPDU may receive the PPDU (eg, a data field of the PPDU) through different frequency bands.
- the EHT-SIG may be configured based on various MCS techniques. As described above, information related to the MCS technique applied to the EHT-SIG may be included in the U-SIG.
- the EHT-SIG may be configured based on the DCM technique. For example, among the N data tones (eg, 52 data tones) allocated for the EHT-SIG, a first modulation scheme is applied to a continuous half tone, and a second modulation scheme is applied to the remaining consecutive half tones. technique can be applied. That is, the transmitting STA modulates specific control information into a first symbol based on the first modulation scheme and allocates to consecutive half tones, modulates the same control information into a second symbol based on the second modulation scheme, and modulates the remaining consecutive tones.
- N data tones eg, 52 data tones
- the EHT-STF of FIG. 10 may be used to improve automatic gain control estimation in a multiple input multiple output (MIMO) environment or an OFDMA environment.
- the EHT-LTF of FIG. 10 may be used to estimate a channel in a MIMO environment or an OFDMA environment.
- Information on the type of STF and/or LTF may be included in the SIG A field and/or the SIG B field of FIG. 10 .
- the PPDU of FIG. 10 (ie, EHT-PPDU) may be configured based on the examples of FIGS. 5 and 6 .
- the EHT PPDU transmitted on the 20 MHz band may be configured based on the RU of FIG. 5 . That is, the location of the RU of the EHT-STF, EHT-LTF, and data field included in the EHT PPDU may be determined as shown in FIG. 5 .
- the EHT PPDU transmitted on the 40 MHz band may be configured based on the RU of FIG. 6 . That is, the location of the RU of the EHT-STF, EHT-LTF, and data field included in the EHT PPDU may be determined as shown in FIG. 6 .
- a tone-plan for 80 MHz may be determined. That is, the 80 MHz EHT PPDU may be transmitted based on a new tone-plan in which the RU of FIG. 6 is repeated twice instead of the RU of FIG. 7 .
- 23 tones may be configured in the DC region. That is, the tone-plan for the 80 MHz EHT PPDU allocated based on OFDMA may have 23 DC tones.
- 80 MHz EHT PPDU ie, non-OFDMA full bandwidth 80 MHz PPDU allocated on the basis of Non-OFDMA is configured based on 996 RUs and consists of 5 DC tones, 12 left guard tones, and 11 right guard tones.
- the tone-plan for 160/240/320 MHz may be configured in the form of repeating the pattern of FIG. 6 several times.
- the PPDU of FIG. 10 may be identified as an EHT PPDU based on the following method.
- the receiving STA may determine the type of the receiving PPDU as the EHT PPDU based on the following items. For example, 1) the first symbol after the L-LTF signal of the received PPDU is BPSK, 2) the RL-SIG where the L-SIG of the received PPDU is repeated is detected, and 3) the L-SIG of the received PPDU is Length When a result of applying “modulo 3” to the field value is detected as “0”, the received PPDU may be determined as an EHT PPDU.
- the receiving STA determines the type of the EHT PPDU (eg, SU/MU/Trigger-based/Extended Range type) based on bit information included in the symbols after the RL-SIG of FIG. 10 . ) can be detected.
- the receiving STA 1) the first symbol after the L-LTF signal that is BSPK, 2) the RL-SIG that is continuous to the L-SIG field and is the same as the L-SIG, and 3) the result of applying “modulo 3” Based on the L-SIG including the Length field set to “0”, the received PPDU may be determined as the EHT PPDU.
- the receiving STA may determine the type of the received PPDU as the HE PPDU based on the following items. For example, 1) the first symbol after the L-LTF signal is BPSK, 2) RL-SIG where L-SIG is repeated is detected, 3) “modulo 3” is applied to the Length value of L-SIG. When the result is detected as “1” or “2”, the received PPDU may be determined as an HE PPDU.
- the receiving STA may determine the type of the received PPDU as non-HT, HT, and VHT PPDU based on the following items. For example, if 1) the first symbol after the L-LTF signal is BPSK, and 2) RL-SIG in which L-SIG is repeated is not detected, the received PPDU is determined to be non-HT, HT and VHT PPDU. can In addition, even if the receiving STA detects the repetition of the RL-SIG, if the result of applying “modulo 3” to the L-SIG Length value is detected as “0”, the received PPDU is a non-HT, HT and VHT PPDU can be judged as
- (transmit/receive/uplink/down) signal may be a signal transmitted/received based on the PPDU of FIG. 10 .
- the PPDU of FIG. 10 may be used to transmit and receive various types of frames.
- the PPDU of FIG. 10 may be used for a control frame.
- control frame may include request to send (RTS), clear to send (CTS), Power Save-Poll (PS-Poll), BlockACKReq, BlockAck, Null Data Packet (NDP) announcement, and Trigger Frame.
- the PPDU of FIG. 10 may be used for a management frame.
- An example of the management frame may include a Beacon frame, (Re-)Association Request frame, (Re-)Association Response frame, Probe Request frame, and Probe Response frame.
- the PPDU of FIG. 10 may be used for a data frame.
- the PPDU of FIG. 10 may be used to simultaneously transmit at least two or more of a control frame, a management frame, and a data frame.
- FIG. 11 shows a modified example of a transmitting apparatus and/or a receiving apparatus of the present specification.
- Each device/STA of the sub-drawings (a)/(b) of FIG. 1 may be modified as shown in FIG. 11 .
- the transceiver 630 of FIG. 11 may be the same as the transceivers 113 and 123 of FIG. 1 .
- the transceiver 630 of FIG. 11 may include a receiver and a transmitter.
- the processor 610 of FIG. 11 may be the same as the processors 111 and 121 of FIG. 1 . Alternatively, the processor 610 of FIG. 11 may be the same as the processing chips 114 and 124 of FIG. 1 .
- the memory 150 of FIG. 11 may be the same as the memories 112 and 122 of FIG. 1 .
- the memory 150 of FIG. 11 may be a separate external memory different from the memories 112 and 122 of FIG. 1 .
- the power management module 611 manages power for the processor 610 and/or the transceiver 630 .
- the battery 612 supplies power to the power management module 611 .
- the display 613 outputs the result processed by the processor 610 .
- Keypad 614 receives input to be used by processor 610 .
- a keypad 614 may be displayed on the display 613 .
- the SIM card 615 may be an integrated circuit used to securely store an international mobile subscriber identity (IMSI) used to identify and authenticate subscribers in mobile phone devices, such as mobile phones and computers, and keys associated therewith. .
- IMSI international mobile subscriber identity
- the speaker 640 may output a sound related result processed by the processor 610 .
- Microphone 641 may receive sound related input to be used by processor 610 .
- SR operation is a way to improve spectrum efficiency by increasing the number of parallel transmissions.
- Carrier Sense Threshold (CST) adjustment for interBSS transmission detected through SR operation may be performed.
- CST coordination is achieved through two mechanisms: i) Overlapping Basic Service Set Packet Detect (OBSS PD)-based SR, and ii) Parametrized Spatial Reuse (PSR).
- OBSS PD Basic Service Set Packet Detect
- PSR Parametrized Spatial Reuse
- TPC Transmission Power Control
- the SR operation is introduced as a mechanism to increase the number of transmissions stored in the OBSS and the spectral efficiency.
- dynamic sensitivity and transmit power tuning have been shown to significantly improve network performance and contribute to reducing the impact of well-known hidden/exposed device issues.
- modifying CST or transmit power may create flow starvation and asymmetry, exacerbating the hidden/exposed device problem.
- FIG. 12 is a diagram showing the effect of increasing and decreasing transmit power and sensitivity in WLAN.
- increasing the sensitivity can contribute to more frequent access to the channel because the carrier sense (CS) area is reduced.
- CS carrier sense
- this may lead to observing a larger number of collisions by hidden nodes.
- using a more aggressive channel access policy may expose the receiver to a higher level of interference, so a stronger MCS (Modulation and Coding Scheme) is required.
- MCS Modulation and Coding Scheme
- SR operation relies on dynamic Clear Channel Assessment/Carrier Sense (CCA/CS) coordination to increase the number of transmission opportunities (TXOPs) in OBSS.
- CCA/CS Clear Channel Assessment/Carrier Sense
- the CCA/CS mechanism is triggered on the Wi-Fi device when it detects the preamble of another device transmission. A detected transmission (beyond the threshold of physical sensitivity) may not be decoded properly if the received signal is poor. In contrast, for a decoded transmission that exceeds the CCA/CS threshold, a physical or virtual carrier sensing operation sets the medium in use. Also, the capture effect is used when detecting multiple signals, so you can stick to the strongest signal without experiencing packet collisions.
- FIG. 13 is an example illustrating a CS area in a wireless LAN system.
- AP A in the center may detect a received signal higher than the receiver sensitivity of the antenna, but may only decode a signal greater than or equal to the CCA/CS threshold.
- AP B since the transmission of AP B can be ignored using the OBSS/PD threshold due to the 11ax SR operation, channel utilization is improved.
- a transmit power limit is applied in the case of a TXOP detected using the OBSS/PD threshold. In FIG. 13 , the transmit power is fixed and all devices use the same frequency channel.
- the MAC layer of a specific device When receiving a PPDU, the MAC layer of a specific device receives a notification from the PHY. At this time, the node examines the frame and determines whether the PPDU is an Intra-BSS frame or an Inter-BSS frame during various operations. By quickly identifying the source of an ongoing transmission, the HE STA can improve the probability of accessing the channel using the appropriate OBSS/PD value.
- 802.11ax defines a set of rules for limiting the OBSS/PD threshold, and the upper limit is as follows.
- TX PWR ref is 21 dBm or 25 dBm depending on device capability
- TX PWR is the antenna in dBm of the HE node that identifies the SR-based TXOP It means transmit power from the connector.
- 14 is a graph illustrating an adjustment rule for OBSS/PD and transmit power.
- SR operation includes transmit power limiting for all transmissions that occur as a result of a sensed SR TXOP (i.e., after ignoring a given inter-BSS frame via OBSS/PD-based SR operation).
- TX PWR max The maximum allowable transmit power
- the OBSS/PD value aims to reduce the impact of simultaneous transmission caused by SR.
- the transmit power limit lasts until the end of the SR TXOP identified by the HE node, which starts when the backoff reaches zero. This period depends on the active transmission period used to detect the SR TXOP.
- PSR operation is defined as an alternative to OBSS/PD-based SR for TB transmission.
- a node using the PSR opportunity identifies the PSR opportunity in the sensed TB transmission.
- the opportunist performs TB transmission and finds a transmission holder indicating support for PSR operation in the header of a TF (Trigger Frame). To identify PSR opportunities, the opportunist must check whether it can ignore the TB PPDU following a given TF packet.
- the intended transmit power of the opportunist must not exceed the requirements imposed by the transmit holder (encapsulated in the PSR_INPUT parameter).
- the opportunist checks the PSR value of the detected TF and confirms that the intended transmission power is acceptable, it transmits it during the period of the TB PPDU(s) (displayed in the Common Info field). Specifically, the intended transmit power must be less than the PSR value measured in the legacy portion of the TF (ie the PHY header) minus the Received Power Level (RPL).
- the PSR value is calculated as follows.
- TX PWR AP is the normalized transmit power in dBm at the output of the antenna connector and I ⁇ max_AP is the normalized value in dB that captures the maximum interference allowed in the transmit holder.
- I ⁇ max_AP is calculated by subtracting the minimum SNR giving 10% PER from the target RSSI indicated in the TF (based on the highest MCS used for UL HE TB PPDU transmission).
- a safety margin (set by the AP) is also included so that it does not exceed 5dB.
- 15 shows an operation according to UL-MU.
- the transmitting STA may perform channel access through contending (ie, backoff operation) and transmit a trigger frame 1030 . That is, the transmitting STA (eg, AP) may transmit the PPDU including the Trigger Frame 1030 .
- a PPDU including a trigger frame is received, a TB (trigger-based) PPDU is transmitted after a delay of SIFS.
- the TB PPDUs 1041 and 1042 are transmitted in the same time zone and may be transmitted from a plurality of STAs (eg, user STAs) whose AIDs are indicated in the trigger frame 1030 .
- the ACK frame 1050 for the TB PPDU may be implemented in various forms.
- an orthogonal frequency division multiple access (OFDMA) technique or MU MIMO technique may be used, and OFDMA and MU MIMO technique may be used simultaneously.
- OFDMA orthogonal frequency division multiple access
- 16 shows an example of a common information field of a trigger frame.
- FIG 17 shows another example of a common information field of a trigger frame.
- the trigger frame may include a common information field corresponding to the HE variant and/or a common information field corresponding to the EHT variant.
- the UL Spatial Reuse subfield of the common information field is a value to be included in the Spatial Reuse field in the HE-SIG-A field of the requested HE TB PPDU.
- Spatial Reuse 1, Spatial Reuse 2, Spatial Reuse 3, and Spatial Reuse 4 fields included in the HE-SIG-A field of the HE TB PPDU are defined as follows.
- Each Spatial Reuse field consists of 4 bits.
- Each Spatial Reuse field included in the HE-SIG-A field of the HE TB PPDU indicates whether a specific spatial reuse mode is allowed in a subband of the PPDU while the PPDU is transmitted, and when PSR reuse is allowed, Parameterized Spatial (PSRT) Reuse Transmission) indicates a value used to determine the limit on the transmission power of the PPDU.
- PSRT Parameterized Spatial
- the Spatial Reuse 1 field is applied to the first 20 MHz subband. If the bandwidth field indicates 160/80+80 MHz, the Spatial Reuse 1 field is applied to the first 40 MHz subband of the 160 MHz operating band.
- the Spatial Reuse 1 field is set as one of the Spatial Reuse field encoding values for the HE TB PPDU as shown in Table 3 below.
- the Spatial Reuse 1 field if present, refers to the first value in the TXVECTOR parameter SPATIAL_REUSE.
- the Spatial Reuse 2 field is applied to the second 20 MHz subband. If the channel width in which the STA operates is 20 MHz, the Spatial Reuse 2 field is set to the same value as the Spatial Reuse 1 field. If the channel width in which the STA operates is 40 MHz in the 2.4 GHz band, the Spatial Reuse 2 field is set to the same value as the Spatial Reuse 1 field. If the bandwidth field indicates 160/80+80 MHz, the Spatial Reuse 2 field is applied to the second 40 MHz subband of the 160 MHz operating band. The Spatial Reuse 2 field is set as one of the Spatial Reuse field encoding values for the HE TB PPDU as shown in Table 3 below. The Spatial Reuse 2 field, if present, refers to the second value in the TXVECTOR parameter SPATIAL_REUSE.
- the Spatial Reuse 3 field is applied to the third 20 MHz subband. If the channel width in which the STA operates is 20 MHz or 40 MHz, the Spatial Reuse 3 field is set to the same value as the Spatial Reuse 1 field. If the bandwidth field indicates 160/80+80 MHz, the Spatial Reuse 3 field is applied to the third 40 MHz subband of the 160 MHz operating band. If the channel width in which the STA operates is 80+80 MHz, the Spatial Reuse 3 field is set to the same value as the Spatial Reuse 1 field. The Spatial Reuse 3 field is set as one of the Spatial Reuse field encoding values for the HE TB PPDU as shown in Table 3 below. The Spatial Reuse 3 field, if present, refers to the third value in the TXVECTOR parameter SPATIAL_REUSE.
- the Spatial Reuse 4 field is applied to the fourth 20 MHz subband. If the channel width in which the STA operates is 20 MHz, the Spatial Reuse 4 field is set to the same value as the Spatial Reuse 1 field. If the channel width in which the STA operates is 40 MHz, the Spatial Reuse 4 field is set to the same value as the Spatial Reuse 2 field. If the bandwidth field indicates 160/80+80 MHz, the Spatial Reuse 4 field is applied to the fourth 40 MHz subband of the 160 MHz operating band. If the channel width in which the STA operates is 80+80 MHz, the Spatial Reuse 4 field is set to the same value as the Spatial Reuse 2 field.
- the Spatial Reuse 4 field is set as one of the Spatial Reuse field encoding values for the HE TB PPDU as shown in Table 3 below.
- the Spatial Reuse 4 field if present, refers to the fourth value in the TXVECTOR parameter SPATIAL_REUSE.
- the four Spatial Reuse 1, 2, 3, 4 fields are arranged in the order of frequency as follows.
- one Spatial Reuse field corresponds to the entire 20 MHz (the other three Spatial Reuse fields indicate the same value).
- the Spatial Reuse field applies only to the 20 MHz used for transmission.
- Spatial Reuse fields In the case of 40 MHz, there are two Spatial Reuse fields including a Spatial Reuse 3 field having the same value as the Spatial Reuse 1 field and a Spatial Reuse 4 field having the same value as the Spatial Reuse 2 field. Each pair of Spatial Reuse fields applies only to the corresponding 20 MHz used for transmission.
- each Spatial Reuse field corresponding to a 20 MHz subband is also applicable to the 242-tone RUs aligned closest to the frequency of the 20 MHz subband described above (in the tone plan for the corresponding BW).
- the correspondence to the 242-ton RU in the Spatial Reuse field is also applied to all RUs within the 242-ton RU.
- the 20 MHz OBSS STA uses the Spatial Reuse field corresponding to its 20 MHz channel
- the 40 MHz OBSS STA located in the lower half of the 80 MHz BSS uses the Spatial Reuse 1 field and the Spatial Reuse 2 field value
- 80 MHz It is implied that the 40 MHz OBSS STA located in the upper frequency half of the BSS uses the Spatial Reuse 3 field and Spatial Reuse 4 field values.
- each Spatial Reuse field corresponding to a 40 MHz subband is also applicable to the 484 tone RUs aligned closest to the frequency of the 40 MHz subband.
- the correspondence to the 484-ton RU in the Spatial Reuse field is also applied to all RUs within the 484-ton RU.
- the table below shows an example of encoding of the Spatial Reuse field for HE SU PPDU, HE ER SU PPDU, and HE MU PPDU.
- the Special User Info Field Present subfield of the EHT variant of the Common Info Field is set to 0, otherwise it is set to 1.
- the Special User Info field is identified as an AID12 value of 2007 and is selectively present in the trigger frame generated by the EHT AP.
- the Special User Info field if present, is located immediately after the Common Info field of the trigger frame, and delivers a nonderived subfield of the U-SIG field of the requested EHT TB PPDU, and the Special User Info Field of the Common Info field. Present subfield is set to 0.
- B55 of the Common Info field in the trigger frame is indicated by B55 of the Common Info field in the trigger frame.
- B55 is set to 1 to indicate that there is no Special User Info field in the trigger frame, and is set to 0 to indicate that the Special User Info field exists in the trigger frame immediately after the Common Info field.
- Spatial Reuse 1 and Spatial Reuse 2 fields included in the U-SIG field of the EHT TB PPDU are defined as follows. Each Spatial Reuse field consists of 4 bits.
- Each Spatial Reuse field included in the U-SIG field of the EHT TB PPDU indicates whether a specific spatial reuse mode is allowed in the subband of the PPDU while the PPDU is being transmitted. Indicates the value used to determine the limit for
- the Spatial Reuse 1 field is applied to the first 20 MHz subband. If the bandwidth field indicates 80 MHz, the Spatial Reuse 1 field is applied to each 20 MHz subchannel of the first 40 MHz subband in the 80 MHz operating band. If the bandwidth field indicates 160 MHz, the Spatial Reuse 1 field is applied to each 20 MHz subchannel of the first 80 MHz subband in the 160 MHz operating band. When the bandwidth field indicates 320MHz-1 or 320MHz-2, the Spatial Reuse 1 field is applied to each 20MHz subchannel of the first 160MHz subband in the 320MHz operating band.
- the Spatial Reuse 1 field is set as the SPATIAL_REUSE(1) parameter of the TXVECTOR including the Spatial Reuse field encoding value for the HE TB PPDU as shown in Table 3 above.
- the Spatial Reuse 2 field is set to the same value as the Spatial Reuse 1 field, and if dot11EHTBaseLineFeaturesImplementedOnly is true, it is ignored (disregarded). If the bandwidth field indicates 40 MHz, the Spatial Reuse 2 field is applied to the second 20 MHz subband. When operating in the 2.4 GHz band, the Spatial Reuse 2 field is set to the same value as the Spatial Reuse 1 field. If the bandwidth field indicates 80 MHz, the Spatial Reuse 2 field is applied to each 20 MHz subchannel of the second 40 MHz subband in the 80 MHz operating band.
- the Spatial Reuse 2 field is applied to each 20 MHz subchannel of the second 80 MHz subband in the 160 MHz operating band. If the bandwidth field indicates 320MHz-1 or 320MHz-2, the Spatial Reuse 2 field is applied to each 20MHz subchannel of the second 160MHz subband in the 320MHz operating band.
- the Spatial Reuse 2 field is set as a SPATIAL_REUSE(2) parameter of the TXVECTOR including the Spatial Reuse field encoding value for the HE TB PPDU as shown in Table 3 above.
- the present specification also considers a method of using aggregation of various bands/links.
- spatial reuse can be used in the same way as 802.11ax, and in this specification, the spatial reuse field configuration of the EHT TB PPDU is proposed.
- the EHT trigger frame reuses the structure of the HE Trigger frame as it is for backward compatibility with 802.11ax, and can configure the EHT Common Info field and EHT User Info Field for EHT TB PPDU instead.
- the Special User Info field is a User Info field that does not deliver user specific information and delivers extended common information not provided by the Common Info field.
- the Special User Info field flag subfield of the EHT variant of the Common Info field is set to 0, and when the Special User Info field is not included in the trigger frame, the Special User Info field flag subfield The field is set to 1.
- the Special User Info field is identified with an AID12 value of 2007 and is optionally present in the trigger frame generated by the EHT AP.
- the Special User Info field exists, it is located immediately after the Common Info field of the Trigger frame and delivers a nonderived subfield of the U-SIG field of the requested EHT TB PPDU, and the Special User Info Field of the Common Info field
- the Flag subfield is set to 0.
- B55 of the Common Info field in the trigger frame is indicated by B55 of the Common Info field in the trigger frame.
- B55 is set to 1 to indicate that there is no Special User Info field in the Trigger frame, and is set to 0 to indicate that the Special User Info field exists in the Trigger frame immediately after the Common Info field.
- the AID12 subfield consists of 12 bits
- the PHY Version ID subfield consists of 3 bits
- the UL Bandwidth Extension subfield consists of 2 bits
- the Spatial Reuse 1 subfield consists of 4 bits.
- the Spatial Reuse 2 subfield consists of 4 bits
- the U-SIG Disregard And Validate subfield consists of 12 bits
- the Reserved subfield consists of 3 bits.
- the PHY Version ID subfield indicates the Wi-Fi version after the EHT and EHT.
- the PHY Version ID subfield is set to 0.
- the UL Bandwidth Extension subfield indicates the bandwidth of the TB PPDU requested from the EHT STA addressed together with the UL BW subfield of the Common Info field (ie, the bandwidth of the U SIG field of the EHT TB PPDU).
- the UL bandwidth extension subfields are defined in the table below.
- the following shows an example of the configuration of the UL BW and UL BW Extension fields when the HE Sub-PPDU and the EHT Sub-PPDU trigger an Aggregated-PPDU (A-PPDU).
- the UL BW and UL BW Extension fields may be configured in a manner different from the above table.
- Spatial Reuse 1 and 2 subfields are set to the same values as those of Spatial Reuse 1 and 2 subfields of the U-SIG field of the EHT TB PPDU, which are values for a specific channel according to the BW. .
- the U-SIG Disregard And Validate subfield is set to a value copied as it is in the Reserved field in the U-SIG of the EHT TB PPDU.
- Reserved subfield 3 bits may be reserved or used for other purposes.
- the PS160 field indicates an RU and a Multi-Resource Unit (MRU) allocated to an STA together with the RU Allocation field.
- MRU Multi-Resource Unit
- FIG. 10 shows the structure of a representative EHT PPDU. It may be used for SU and MU transmission, and the EHT-SIG may not be included in the TB PPDU transmission.
- Universal-SIG includes a version independent field and a version dependent field.
- EHT-SIG can carry various common information and user specific information.
- the bandwidth can be indicated using the Bandwidth field, which can be included in the version independent of U-SIG.
- the corresponding field may consist of 3 bits and may carry only bandwidth information without including information on the preamble puncturing pattern.
- puncturing information may be carried in another field of the U-SIG or a specific field of the EHT-SIG.
- the version independent field may include a 3-bit version identifier and 1-bit DL/UL field indicating a Wi-Fi version after 802.11be and 802.11be, BSS color, TXOP duration, etc.
- the version dependent field includes PPDU type, etc. information may be included.
- U-SIG two symbols are jointly encoded, and each 20MHz consists of 52 data tones and 4 pilot tones. It is also modulated in the same way as HE-SIG-A. That is, it is modulated with a BPSK 1/2 code rate.
- EHT-SIG can be encoded as variable MCS, and as in the existing 802.11ax, 1 2 1 2 ... in units of 20 MHz.
- 1 2 3 4 ... or 1 2 1 2 3 4 3 4 ... may also be configured in units of 80 MHz, and EHT-SIG is replicated in units of 80 MHz in a bandwidth of 80 MHz or more. (duplication) can be.
- Spatial Reuse may be used to reduce interference with OBSS.
- This specification particularly proposes the configuration of the spatial reuse field in the EHT TB PPDU.
- the spatial reuse field may be located in the U-SIG version dependent field and may consist of 4 fields as in 802.11ax, and each field may use 4 bits.
- the meaning of each entry expressed by each 4-bit may be the same as described above or may have a different meaning.
- each field may use a different number of bits.
- the spatial reuse field may consist of two fields instead of four.
- the following is a configuration of a representative U-SIG field of the EHT TB PPDU.
- the above U-SIG field can be configured by copying the field of the Trigger frame as it is.
- the Trigger frame triggers the HE TB PPDU, EHT TB PPDU, or TB A-PPDU
- the Trigger frame is an EHT Trigger frame capable of triggering both HE TB PPDU, EHT TB PPDU, or TB A-PPDU.
- the Common Info field of the Trigger frame is a HE/EHT variant Common Info field
- the EHT Common Info field of the Trigger frame is assumed and described as a Special Info field.
- EHT Trigger frame HE TB PPDU
- EHT TB PPDU The structures of the EHT Trigger frame, HE TB PPDU, and EHT TB PPDU are as follows.
- the EHT Trigger frame consists of a HE/EHT variant Common Info field, (Special User Info field) and a HE/EHT variant User Info field.
- the EHT variant Common Info field includes 4 Spatial Reuse fields, and the 4 Spatial Reuse fields are applied to each of 4 subchannels and are defined for SR (Spatial Reuse) of the OBSS HE STA.
- the bandwidth of the EHT TB PPDU is indicated through the 2-bit UL BW field in the EHT variant Common Info field and the 2-bit UL Bandwidth Extension subfield in the Special User Info field.
- B54 and B55 are used as HE/EHT P160 and Special User Info Field Flag subfields in the EHT variant Common Info field, respectively (see FIGS. 16 and 17 ).
- the HE/EHT P160 subfield indicates whether the primary 160 is an HE TB PPDU (set to 1) or an EHT TB PPDU (set to 0).
- the Special User Info Field Flag subfield indicates whether the Special User Info field exists (set as 0) or not (set as 1). That is, among the UL HE-SIG-A2 Reserved subfields, B54 and B55 were originally set to 11, but when the EHT Trigger frame triggers the EHT TB PPDU, B54 and B55 are set to 00.
- the HE TB PPDU includes 4 Spatial Reuse fields in HE-SIG-A.
- the EHT TB PPDU includes two Spatial Reuse fields in the U-SIG. In the two Spatial Reuse fields included in the U-SIG, values of two Spatial Reuse fields of the Special User Info field are copied.
- the Trigger frame can be configured just like the existing HE Trigger frame without the EHT Common Info field and the EHT User Info field.
- the UL BW indicates the BW of the HE TB PPDU, and accordingly, four Spatial Reuse fields can also be set in the same manner as in the existing 802.11ax. have. That is, as in Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field and four Spatial Reuse fields in the HE TB PPDU may be configured.
- Trigger frame triggers only EHT TB PPDU
- the UL BW of the Common Info field may be set to a specific value to indicate the BW of the EHT TB PPDU, and if the OBSS HE STA and the non-associated HE STA BW), it is possible to determine the BW of the TB PPDU using it (it may vary depending on the UL BW configuration, but in the above UL BW configuration example, if the 20/40/80/160 MHz EHT TB PPDU is triggered, it is determined as the same BW) However, if 320MHz EHT TB PPDU is triggered, it can be determined as 160MHz).
- the OBSS HE STA and the non-associated HE STA can perform Spatial Reuse using the four Spatial Reuse fields of the Common Info field, it is not necessary to set the four Spatial Reuse fields in the Common Info field of the Trigger Frame to specific values. have.
- the four Spatial Reuse fields in the Common Info field are BW (20/40/80/160MHz ) according to the existing 802.11ax Trigger frame (even if it is not the above example, when the 20/40/80/160 MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is the same).
- four Spatial Reuse fields in the Common Info field may be configured. Basically, this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU.
- the two Spatial Reuse fields in the EHT Common Info field are set the same (that is, the Spatial Reuse field in the U-SIG of the EHT TB PPDU of Appendix 3 is EHT It is applied as it is to the configuration of two Spatial Reuse fields in the Common Info field, and this value may be used for setting the Spatial Reuse field in the U-SIG of the EHT TB PPDU) or Reserved.
- the four Spatial Reuse fields in the Common Info field are the BW (20/40/80/160MHz ), it can be set as follows (even if it is not the above example, when the 20/40/80/160 MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is the same).
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them.
- the 20MHz EHT TB PPDU is triggered, the two Spatial Reuse fields in the EHT Common Info field are set to the same value, and you can copy one of these two values and set the same value in all four fields in the Common Info field. .
- two Spatial Reuse fields in the EHT Common Info field are set to the spatial reuse values corresponding to each 20MHz, and these values are copied to the corresponding 20MHz field among the four Spatial Reuse fields in the Common Info field. You can set it as is.
- the value of the first field among the two Spatial Reuse fields in the EHT Common Info field can be copied to the first and third values among the four Spatial Reuse fields in the Common Info field, and the two Spatial Reuse fields in the EHT Common Info field
- the value of the second field can be copied to the second and fourth values among the four Spatial Reuse fields in the Common Info field.
- the two Spatial Reuse fields in the EHT Common Info field are set to the spatial reuse value corresponding to each 40MHz, and by copying this value as it is, the first two fields among the four Spatial Reuse fields in the Common Info field can be set as the first value among the two Spatial Reuse fields in the EHT Common Info field, and the last two fields among the four Spatial Reuse fields in the Common Info field can be set as the last value among the two Spatial Reuse fields in the EHT Common Info field. .
- the two Spatial Reuse fields in the EHT Common Info field are set to the spatial reuse values corresponding to each 80MHz, and by copying these values as they are, the first two fields among the four Spatial Reuse fields in the Common Info field can be set as the first value among the two Spatial Reuse fields in the EHT Common Info field, and the last two fields among the four Spatial Reuse fields in the Common Info field can be set as the last value among the two Spatial Reuse fields in the EHT Common Info field. .
- a specific dbm value is added or subtracted from the meaning (dBm value) of the value, and then a value corresponding to the maximum dbm value less than or equal to this can be changed.
- dBm value the meaning of the maximum dbm value less than or equal to this can be changed.
- the values of the two Spatial Reuse fields in the EHT Common Info field are normalized to a 20 MHz channel and the values of the four Spatial Reuse fields in the Common Info field simply mean values normalized to the corresponding channel, 40 MHz, 6 (or 20log2) ), it may be desirable to correct by adding dB.
- the four Spatial Reuse fields in the Common Info field can be set as follows according to the BW (160 MHz) indicated in the UL BW when the 320 MHz EHT TB PPDU is triggered in the example of the UL BW and UL Bandwidth Extension subfield above (above) Even if it is not an example of , if the 320MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is 160MHz). It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and transmitted at 160 MHz or less. In this case, four Spatial Reuse fields in the Common Info field may be set as in 160 MHz in Appendix 1 to be described later.
- 160 MHz may be 160 MHz including a channel through which a trigger frame is transmitted. Basically, this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 160 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field may be set to one of the values of the four Spatial Reuse fields in the Common Info field. For example, it may be set to the largest or smallest value.
- the field corresponding to 160 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, set to one of the values of the four Spatial Reuse fields) For example, it may be set to the largest value or the smallest value. This value may be used for setting the Spatial Reuse field corresponding to the 160 MHz in the U-SIG of the EHT TB PPDU) or Reserved.
- a field corresponding to 160 MHz other than 160 MHz indicated by the values of four Spatial Reuse fields in the Common Info field may be set to a Spatial Reuse value corresponding to this value, and this value is EHT TB PPDU It can be used to set a field corresponding to 160 MHz other than 160 MHz indicated by the values of 4 Spatial Reuse fields in the Common Info field among the Spatial Reuse fields in the U-SIG.
- the four Spatial Reuse fields in the Common Info field can be set as follows according to the BW (160 MHz) indicated in the UL BW when the 320 MHz EHT TB PPDU is triggered in the example of the UL BW and UL Bandwidth Extension subfield above (above) Even if it is not an example of , if the 320MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is 160MHz). It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and transmitted at 160 MHz or less.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them.
- two Spatial Reuse fields in the EHT Common Info field are set to spatial reuse values corresponding to 160 MHz, respectively.
- the value corresponding to 160 MHz including the channel through which the Trigger Frame is transmitted can be copied and the corresponding value can be set as it is in the four fields in the Common Info field.
- the four Spatial Reuse fields in the Common Info field may be set as follows according to the BW (160 MHz) indicated by the UL BW when the 320 MHz EHT TB PPDU is triggered in the example of the UL BW and UL Bandwidth Extension subfield above (above) Even if it is not an example of , if the 320MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is 160MHz). It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel. 4 Spatial Reuse fields in the Common Info field may be configured like 160 MHz in Appendix 1 to be described later.
- 160 MHz may be one of Primary 160 MHz and Secondary 160 MHz (or low 160 MHz and high 160 MHz). For example, it may simply be Primary 160MHz.
- each Spatial Reuse value (or PSR value, the same applies below) among Primary 160MHz and Secondary 160MHz (or low 160MHz and high 160MHz) may be set to a Spatial Reuse value of 160MHz having a larger or smaller value. or 160 MHz having the smaller or greater value of the minimum or maximum value of the four 40 MHz Spatial Reuse values within the Primary 160 MHz (or low 160 MHz) and the minimum or the maximum value of the four 40 MHz Spatial Reuse values within the Secondary 160 MHz (or high 160 MHz) It can be set to a Spatial Reuse value of .
- this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 160 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field may be set to one of the values of the four Spatial Reuse fields in the Common Info field. For example, it may be set to the largest or smallest value.
- the field corresponding to 160 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, set to one of the values of the four Spatial Reuse fields) For example, it may be set to the largest value or the smallest value. This value may be used for setting the Spatial Reuse field corresponding to the 160 MHz in the U-SIG of the EHT TB PPDU) or Reserved .
- a field corresponding to 160 MHz other than 160 MHz indicated by the values of four Spatial Reuse fields in the Common Info field may be set to a Spatial Reuse value corresponding to this value, and this value is EHT TB PPDU It can be used to set a field corresponding to 160 MHz other than 160 MHz indicated by the values of 4 Spatial Reuse fields in the Common Info field among the Spatial Reuse fields in the U-SIG.
- the four Spatial Reuse fields in the Common Info field can be set to another example as follows according to the BW (160MHz) indicated in the UL BW when the 320MHz EHT TB PPDU is triggered in the example of the UL BW and UL Bandwidth Extension subfield above. Yes (even if it is not the above example, when the 320MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is 160MHz). It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel. There are four 40 MHz Spatial Reuse values in each of Primary 160 MHz and Secondary 160 MHz (or low 160 MHz and high 160 MHz).
- the first Spatial Reuse field in the Common Info field can be set by comparing the lowest 40MHz Spatial Reuse value of Primary 160MHz (or low 160MHz) and the lowest 40MHz Spatial Reuse value of Secondary 160MHz (or high 160MHz) and ,
- the second Spatial Reuse field in the Common Info field can be set by comparing the Spatial Reuse value of the second low 40MHz of the Primary 160MHz (or low 160MHz) and the Spatial Reuse value of the second low 40MHz of the Secondary 160MHz (or high 160MHz). have.
- the third Spatial Reuse field in the Common Info field can be set by comparing the second high 40MHz Spatial Reuse value of the Primary 160MHz (or low 160MHz) and the second high 40MHz Spatial Reuse value of the Secondary 160MHz (or high 160MHz) and , the fourth Spatial Reuse field in the Common Info field may be set by comparing the highest 40MHz Spatial Reuse value of the Primary 160MHz (or low 160MHz) and the highest 40MHz Spatial Reuse value of the Secondary 160MHz (or high 160MHz).
- the four Spatial Reuse fields in the Common Info field can be set to another example as follows according to the BW (160MHz) indicated in the UL BW when the 320MHz EHT TB PPDU is triggered in the example of the UL BW and UL Bandwidth Extension subfield above. Yes (even if it is not the above example, when the 320MHz EHT TB PPDU is triggered, the BW indicated by the UL BW is 160MHz). It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them.
- two Spatial Reuse fields in the EHT Common Info field are set to spatial reuse values corresponding to 160 MHz, respectively. You can copy the larger or smaller value among the two Spatial Reuse fields in the EHT Common Info field and set the same value in the four fields in the Common Info field as it is. Additionally, in order to correct the value according to the difference in BW (or the difference in normalization), a specific dbm value is added or subtracted from the meaning (dBm value) of the value, and then it can be changed to a value corresponding to the maximum dbm value less than or equal to this ( All four values are set equal).
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 160 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and is transmitted at 80 MHz or less. In Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be configured like 80MHz. However, 80 MHz may be 80 MHz including a channel through which a trigger frame is transmitted.
- this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field may be set to one of the values of the four Spatial Reuse fields in the Common Info field. For example, it may be set to the largest or smallest value.
- the field corresponding to 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, set to one of the values of the four Spatial Reuse fields) For example, it may be set to the largest value or the smallest value. This value may be used for setting the Spatial Reuse field corresponding to 80MHz in the U-SIG of the EHT TB PPDU) or Reserved .
- a field corresponding to 80 MHz other than 80 MHz indicated by the values of four Spatial Reuse fields in the Common Info field may be set to a Spatial Reuse value corresponding to this value, and this value is the EHT TB PPDU It can be used to set a field corresponding to 80MHz other than 80MHz indicated by the values of four Spatial Reuse fields in the Common Info field among the Spatial Reuse fields in the U-SIG of .
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 160 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and is transmitted at 80 MHz or less.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them. That is, when the 160MHz EHT TB PPDU is triggered, two Spatial Reuse fields in the EHT Common Info field are set to spatial reuse values corresponding to each 80MHz.
- the value corresponding to 80 MHz including the channel through which the Trigger Frame is transmitted can be copied and the corresponding value can be set in the four fields in the Common Info field as it is.
- a specific dbm value is added or subtracted from the meaning (dBm value) of the value, and then it can be changed to a value corresponding to the maximum dbm value less than or equal to this ( All four values can be set equal). In this case, in particular, it may be desirable to correct by subtracting 12dB (or 20log4).
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 160 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel. In Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be configured like 80MHz. However, 80MHz may be one of Primary 80MHz and Secondary 80MHz (or low 80MHz and high 80MHz). For example, it could simply be the Primary 80MHz.
- each Spatial Reuse value among Primary 80MHz and Secondary 80MHz may be set to a Spatial Reuse value of 80MHz having a larger or smaller value. or 80 MHz having the smaller or greater value of the minimum or maximum value of the four 20 MHz Spatial Reuse values within the Primary 80 MHz (or low 80 MHz) and the minimum or the maximum value of the four 20 MHz Spatial Reuse values within the Secondary 80 MHz (or high 80 MHz) It can be set to a Spatial Reuse value of .
- this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field may be set to one of the values of the four Spatial Reuse fields in the Common Info field. For example, it may be set to the largest or smallest value.
- the field corresponding to 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, set to one of the values of the four Spatial Reuse fields) For example, it may be set to the largest value or the smallest value. This value may be used for setting the Spatial Reuse field corresponding to 80MHz in the U-SIG of the EHT TB PPDU) or Reserved .
- a field corresponding to 80 MHz other than 80 MHz indicated by the values of four Spatial Reuse fields in the Common Info field may be set to a Spatial Reuse value corresponding to this value, and this value is the EHT TB PPDU It can be used to set a field corresponding to 80MHz other than 80MHz indicated by the values of four Spatial Reuse fields in the Common Info field among the Spatial Reuse fields in the U-SIG of .
- the four Spatial Reuse fields in the Common Info field are configured as UL BW and UL Bandwidth Extension subfield, and when a 160 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it can be set as another example as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel. There are four 20 MHz Spatial Reuse values in each of Primary 80 MHz and Secondary 80 MHz (or low 80 MHz and high 80 MHz).
- the first Spatial Reuse field in the Common Info field can be set by comparing the lowest Spatial Reuse value of 20MHz of Primary 80MHz (or low 80MHz) and the lowest Spatial Reuse value of 20MHz of Secondary 80MHz (or high 80MHz) and ,
- the second Spatial Reuse field in the Common Info field can be set by comparing the Spatial Reuse value of the second low 20MHz of the Primary 80MHz (or low 80MHz) and the Spatial Reuse value of the second low 20MHz of the Secondary 80MHz (or high 80MHz). have.
- the third Spatial Reuse field in the Common Info field can be set by comparing the Spatial Reuse value of the second high 20MHz of the Primary 80MHz (or low 80MHz) and the Spatial Reuse value of the second high 20MHz of the Secondary 80MHz (or high 80MHz) and , the fourth Spatial Reuse field in the Common Info field may be set by comparing the highest Spatial Reuse value of 20MHz of Primary 80MHz (or low 80MHz) and the highest Spatial Reuse value of 20MHz of Secondary 80MHz (or high 80MHz).
- the four Spatial Reuse fields in the Common Info field are configured as UL BW and UL Bandwidth Extension subfield, and when a 160 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it can be set as another example as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them. That is, when the 160MHz EHT TB PPDU is triggered, two Spatial Reuse fields in the EHT Common Info field are set to spatial reuse values corresponding to each 80MHz.
- the values of the two Spatial Reuse fields in the EHT Common Info field are normalized to a 20 MHz channel and the values of the four Spatial Reuse fields in the Common Info field simply mean values normalized to the corresponding channel, 40 MHz, 6 (or 20log2) ), it may be desirable to correct by adding dB.
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and is transmitted at 80 MHz or less. In Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be configured like 80MHz. However, 80 MHz may be 80 MHz including a channel through which a trigger frame is transmitted.
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and transmitted at 80MHz or more and 160MHz or less. In Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be configured like 80MHz. However, 80 MHz may be one of two 80 MHz channels in a 160 MHz channel including a channel through which a trigger frame is transmitted.
- each Spatial Reuse value among two 80MHz channels in a 160MHz channel including a channel through which a Trigger Frame is transmitted may be set to a Spatial Reuse value of 80MHz having a larger or smaller value.
- the smaller or larger value of the minimum or maximum value of four 20MHz spatial reuse values within the first 80MHz and the minimum or maximum value of four 20MHz spatial reuse values within the second 80MHz among 160MHz channels including the channel through which the trigger frame is transmitted It can be set to a Spatial Reuse value of 80 MHz with Basically, this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 160MHz to which 80MHz indicated by the values of the 4 Spatial Reuse fields in the Common Info field belongs can be set to one of the values of the 4 Spatial Reuse fields in the Common Info field. have. For example, it may be set to the largest or smallest value.
- the field corresponding to 160 MHz to which 80 MHz indicated by the values of four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, of the four Spatial Reuse fields) It may be set to one of the values, for example, it may be set to the largest value or the smallest value.
- This value may be used for setting the Spatial Reuse field corresponding to the 160 MHz in the U-SIG of the EHT TB PPDU) or Can be reserved.
- a field corresponding to 160 MHz other than 160 MHz to which 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field belongs can be set to a Spatial Reuse value corresponding to this value.
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it can be set as another example as follows. It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and transmitted at 80MHz or more and 160MHz or less.
- the Spatial Reuse value of 20 MHz located at the same location within the two 80 MHz is compared and the Spatial value is set to a large value or a small value.
- a Reuse value can be set. That is, the first Spatial Reuse field in the Common Info field is set by comparing the lowest Spatial Reuse value of 20MHz of the first 80MHz and the lowest Spatial Reuse value of 20MHz of the second 80MHz among 160MHz channels including the channel through which the Trigger Frame is transmitted.
- the second Spatial Reuse field in the Common Info field is the second low 20MHz Spatial Reuse value of the first 80MH and the second low 20MHz Spatial Reuse value of the second 80MHz among 160MHz channels including the channel through which the Trigger Frame is transmitted. can be set by comparing The third Spatial Reuse field in the Common Info field is set by comparing the second high 20MHz Spatial Reuse value of the first 80MHz and the second high 20MHz Spatial Reuse value of the second 80MHz among 160MHz channels including the channel through which the Trigger Frame is transmitted. The fourth Spatial Reuse field in the Common Info field compares the highest Spatial Reuse value of 20MHz of the first 80MHz and the highest Spatial Reuse value of 20MHz of the second 80MHz among 160MHz channels including the channel through which the Trigger Frame is transmitted.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 160MHz to which 80MHz indicated by the values of the 4 Spatial Reuse fields in the Common Info field belongs can be set to one of the values of the 4 Spatial Reuse fields in the Common Info field. have. For example, it may be set to the largest or smallest value.
- the field corresponding to 160 MHz to which 80 MHz indicated by the values of four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, of the four Spatial Reuse fields) It may be set to one of the values, for example, it may be set to the largest value or the smallest value. This value may be used for setting the Spatial Reuse field corresponding to the 160 MHz in the U-SIG of the EHT TB PPDU) or Can be reserved.
- a field corresponding to 160 MHz other than 160 MHz to which 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field belongs can be set to a Spatial Reuse value corresponding to this value.
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is different from the transmission BW of the EHT TB PPDU and transmitted at 160 MHz or less.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them. That is, when the 320 MHz EHT TB PPDU is triggered, two Spatial Reuse fields in the EHT Common Info field are set to spatial reuse values corresponding to 160 MHz, respectively.
- the value corresponding to 160 MHz including the channel through which the Trigger Frame is transmitted can be copied and the same value can be set in the four fields in the Common Info field (4 Spatial Reuse) field indicates 80 MHz, each of which is a value corresponding to 20 MHz, and a 160 MHz spatial reuse value may be set as it is).
- 4 Spatial Reuse indicates 80 MHz, each of which is a value corresponding to 20 MHz, and a 160 MHz spatial reuse value may be set as it is).
- add or subtract a specific dbm value to the meaning (dBm value) of the value add or subtract a specific dbm value to the meaning (dBm value) of the value, and then change it to a value corresponding to the maximum dbm value less than or equal to this ( 4 values set equal). In this case, in particular, it may be desirable to correct by subtracting 18dB (or 20log8).
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it may be set as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel. In Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be configured like 80MHz.
- 80 MHz may be one of two 80 MHz (or lowest 80 MHz, second lowest 80 MHz, second highest 80 MHz, and highest 80 MHz) of Primary 80 MHz, Secondary 80 MHz, and Secondary 160 MHz.
- it could simply be the Primary 80MHz.
- the two 80MHz of Primary 80MHz, Secondary 80MHz and Secondary 160MHz, or lowest 80MHz, second lowest 80MHz, second highest 80MHz and highest 80MHz) can be set to a Spatial Reuse value of 80MHz having a larger or smaller value. have.
- 80MHz Spatial having the smaller or greater value of the minimum or maximum value of the four 20MHz Spatial Reuse values within the highest 80MHz) and the minimum or the maximum value of the four 20MHz Spatial Reuse values within the higher 80MHz (or highest 80MHz) of the Secondary 160MHz It can be set as a Reuse value.
- this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- the Spatial Reuse field in the U-SIG of the EHT TB PPDU corresponding to 160MHz to which 80MHz indicated by the values of the 4 Spatial Reuse fields in the Common Info field belongs can be set to one of the values of the 4 Spatial Reuse fields in the Common Info field. have. For example, it may be set to the largest or smallest value.
- the field corresponding to 160 MHz to which 80 MHz indicated by the values of four Spatial Reuse fields in the Common Info field among the two Spatial Reuse fields in the EHT Common Info field is set to be the same (that is, of the four Spatial Reuse fields) It may be set to one of the values, for example, it may be set to the largest value or the smallest value. This value may be used for setting the Spatial Reuse field corresponding to the 160 MHz in the U-SIG of the EHT TB PPDU) or Can be reserved.
- a field corresponding to 160 MHz other than 160 MHz to which 80 MHz indicated by the values of the four Spatial Reuse fields in the Common Info field belongs can be set to a Spatial Reuse value corresponding to this value.
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it can be set as another example as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel. There are four 20MHz Spatial Reuse values in each of the two 80MHz (or lowest 80MHz and second lowest 80MHz and second highest 80MHz and highest 80MHz) of Primary 80MHz, Secondary 80MHz, and Secondary 160MHz. By comparison, the Spatial Reuse value may be set to a large value or a small value.
- the first Spatial Reuse field in the Common Info field is the lowest 20MHz Spatial Reuse value of Primary 80MHz (or lowest 80MHz), the lowest Spatial Reuse value of 20MHz of Secondary 80MHz (or second lowest 80MHz), and the lower 80MHz of Secondary 160MHz. (or second highest 80MHz) can be set by comparing the lowest 20MHz Spatial Reuse value of Secondary 160MHz with the lowest 20MHz Spatial Reuse value of 80MHz (or highest 80MHz) of Secondary 160MHz, and the second Spatial Reuse field in the Common Info field is the second low 20MHz Spatial Reuse value of Primary 80MHz (or lowest 80MHz), the second low 20MHz Spatial Reuse value of Secondary 80MHz (or second lowest 80MHz), and the second of the lower 80MHz (or second highest 80MHz) of Secondary 160MHz.
- the third Spatial Reuse field in the Common Info field is the second high 20MHz Spatial Reuse value of the Primary 80MHz (or lowest 80MHz), the second highest Spatial Reuse value of 20MHz of the Secondary 80MHz (or the second lowest 80MHz), and the lower 80MHz of the Secondary 160MHz.
- the fourth Spatial in the Common Info field Reuse field is the highest 20MHz Spatial Reuse value of Primary 80MHz (or lowest 80MHz), the highest Spatial Reuse value of 20MHz of Secondary 80MHz (or second lowest 80MHz), and the highest of 80MHz (or second highest 80MHz) lower among Secondary 160MHz. It can be set by comparing the Spatial Reuse value of 20MHz and the highest Spatial Reuse value of 20MHz of the high 80MHz (or highest 80MHz) among the Secondary 160MHz.
- the four Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and when a 320 MHz EHT TB PPDU is triggered and the BW indicated by the UL BW is 80 MHz, it can be set as another example as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them.
- two Spatial Reuse fields in the EHT Common Info field are set to spatial reuse values corresponding to 160 MHz, respectively.
- a specific dbm value is added or subtracted from the meaning (dBm value) of the value, and then it can be changed to a value corresponding to the maximum dbm value less than or equal to this ( All four values can be set equal). In this case, in particular, it may be desirable to correct by subtracting 18dB (20log8).
- the 4 Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and 80 MHz (or W MHz, W is 80, 40 or 20) EHT TB PPDU is triggered and BW indicated by UL BW is 160 MHz (or If 2*W MHz, W is 80, 40, or 20), it may be set as follows. In Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be set like 160 MHz (or 2*W MHz, W is 80, 40, or 20).
- the actual Spatial Reuse value can be set only for 80 MHz (or W MHz, W is 80, 40 or 20) where the actual EHT TB PPDU is transmitted, and other 80 MHz (or W MHz, W is 80, 40 or 20) ) can be set to any Spatial Reuse value.
- 80 MHz or W MHz, W is 80, 40 or 20
- this may be a value irrelevant to the configuration of the Spatial Reuse field in the U-SIG when transmitting the EHT TB PPDU, but the Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured using four Spatial Reuse fields in the Common Info field.
- two 40 MHz (or two W/2 MHz for W is 80 or 40, and one 20MHz for W is 20) It can be set using Spatial Reuse value.
- the two Spatial Reuse fields in the EHT Common Info field are also set identically (that is, 80 MHz (or W MHz, W is 80, 40 or 20) used for EHT TB PPDU transmission among the values of the four Spatial Reuse fields. ) corresponding to two 40MHz (or 80 or 40 for two W/2 MHz for W, and 20 for one 20MHz for W) Spatial Reuse value.
- This value is the U-SIG of the EHT TB PPDU. It may be used to set Spatial Reuse field) or Reserved.
- the 4 Spatial Reuse fields in the Common Info field are composed of UL BW and UL Bandwidth Extension subfield, and 80 MHz (or W MHz, W is 80, 40 or 20) EHT TB PPDU is triggered and BW indicated by UL BW is 160 MHz (or If 2*W MHz, W is 80, 40, or 20), as another example, it may be set as follows. It is assumed that the transmission BW of the trigger frame is the same as the transmission BW of the EHT TB PPDU, and it is assumed that it is transmitted through the same channel.
- the two Spatial Reuse field settings in the EHT Common Info field are described in Appendix 3 and can be set using them.
- two Spatial Reuse fields in the EHT Common Info field are set to a spatial reuse value corresponding to each 40MHz, and these values are copied to the corresponding 40MHz among the four Spatial Reuse fields in the Common Info field. field can be set as it is. For example, if 80MHz EHT TB PPDU corresponds to the lower frequency among 160MHz channels, the value of the first field among the two Spatial Reuse fields in the EHT Common Info field can be copied to the first value among the four Spatial Reuse fields in the Common Info field, and EHT The value of the second field among the two Spatial Reuse fields in the Common Info field may be copied to the second value among the four Spatial Reuse fields in the Common Info field.
- the value of the first field among the two Spatial Reuse fields in the EHT Common Info field can be copied to the third value among the four Spatial Reuse fields in the Common Info field, and EHT Common
- the value of the second field among the two Spatial Reuse fields in the Info field may be copied to the fourth value among the four Spatial Reuse fields in the Common Info field.
- the values of two Spatial Reuse fields that do not correspond can be set to a specific value (preferably set to a high value), and for ease of implementation, Two Spatial Reuse field values can be used.
- the value of the first field among the two Spatial Reuse fields in the EHT Common Info field can be copied to the first and third values among the four Spatial Reuse fields in the Common Info field, and the two Spatial Reuse fields in the EHT Common Info field
- the value of the second field among the reuse fields can be copied to the second and fourth values among the four Spatial Reuse fields in the Common Info field.
- the four Spatial Reuse fields in the Common Info field may be simply set according to the BW (EHT TB PPDU BW) indicated in the UL BW and UL Bandwidth Extension subfield for Spatial Reuse of EHT STAs. It can be used to configure the Spatial Reuse field in the SIG. That is, as in Appendix 2 to be described later, four Spatial Reuse fields in the Common Info field may be configured, and Spatial Reuse fields in the U-SIG of the EHT TB PPDU may be configured.
- BW EHT TB PPDU BW
- the two Spatial Reuse fields in the EHT Common Info field are set the same (that is, the method of configuring the Spatial Reuse field in the U-SIG of the EHT TB PPDU of Appendix 2 is the configuration of the two Spatial Reuse fields in the EHT Common Info field)
- This value may be used for setting the Spatial Reuse field in the U-SIG of the EHT TB PPDU) or Reserved.
- the four Spatial Reuse fields in the Common Info field are simply set to a value (0) that disallows spatial reuse or a value (15) that prohibits spatial reuse regardless of the BW of the triggered EHT TB PPDU or the BW indicated by the UL BW.
- can be The reason is that in order for the OBSS HE STA to perform spatial reuse, BSS color information must be obtained from the EHT TB PPDU from the viewpoint of the 802.11ax spec, but this is impossible.
- the dB value may be defined the same as the existing 802.11ax (see Table 3).
- the two Spatial Reuse fields in the EHT Common Info field can be set according to the BW (EHT TB PPDU BW) indicated in the UL BW and UL Bandwidth Extension subfield in addition to the setting method suggested above, which is a U-SIG when transmitting EHT TB PPDU. It can be used to configure the Spatial Reuse field in the That is, as in Appendix 3 to be described later, two Spatial Reuse fields in the EHT Common Info field may be configured, and a Spatial Reuse field in the U-SIG of the EHT TB PPDU may be configured.
- FIG. 21 shows an example in which a TB A-PPDU is transmitted.
- a TB A-PPDU (Trigger Based Aggregated-PPDU) is a PPDU in which an EHT TB PPDU and an HE TB PPDU are simultaneously transmitted by a trigger frame.
- the trigger frame may trigger the EHT TB PPDU and the HE TB PPDU, and the TB A-PPDU may be transmitted simultaneously by one STA by an aggregation of the EHT TB PPDU and the HE TB PPDU.
- the TB A-PPDU may be an aggregation of the EHT TB PPDU and the HE TB PPDU, and the EHT TB PPDU or the HE TB PPDU may be transmitted by a plurality of STAs.
- the trigger frame that triggers the TB A-PPDU there may be four spatial reuse fields for the HE TB PPDU and two spatial reuse fields for the EHT TB PPDU.
- the four spatial reuse fields can be set to values for the bandwidth of only the HE TB PPDU (that is, only the bandwidth over which the HE TB PPDU is transmitted regardless of the overall bandwidth of the TB A-PPDU), and the two spatial reuse fields are the EHT TB PPDU It can be set to a value considering only the bandwidth or the entire bandwidth.
- the four Spatial Reuse fields in the Common Info field can be set like the existing 802.11ax Trigger frame according to the BW (HE TB Sub-PPDU BW) indicated by the UL BW, which is Spatial in the HE-SIG-A when transmitting the HE TB PPDU. It can be used to configure the Reuse field. That is, as in Appendix 1 to be described later, four Spatial Reuse fields in the Common Info field may be configured and a Spatial Reuse field in the HE TB Sub-PPDU may be configured.
- BW HE TB Sub-PPDU BW
- the two Spatial Reuse fields in the EHT Common Info field may be set according to the BW (EHT TB Sub-PPDU BW or A-PPDU BW) indicated in the UL BW and UL BW Extension subfield, which is U-SIG during EHT TB PPDU transmission. It can be used to configure the Spatial Reuse field in the That is, as in Appendix 3 to be described later, two Spatial Reuse fields in the EHT Common Info field may be configured, and a Spatial Reuse field in the U-SIG of the EHT TB Sub-PPDU may be configured. It may be preferable to set the Spatial Reuse value of the indicated BW.
- BW EHT TB Sub-PPDU BW or A-PPDU BW
- the two Spatial Reuse fields in the EHT Common Info field are not set according to the corresponding BW, but are set according to the entire A-PPDU BW.
- This can be used to configure the Spatial Reuse field in the U-SIG when transmitting the EHT TB Sub-PPDU. That is, as in Appendix 3 to be described later, two Spatial Reuse fields in the EHT Common Info field may be configured, and a Spatial Reuse field in the U-SIG of the EHT TB Sub-PPDU may be configured.
- the two Spatial Reuse fields in the EHT Common Info field are not set according to the corresponding BW, but may be set according to the EHT TB Sub-PPDU BW. And this can be used to configure the Spatial Reuse field in the U-SIG when transmitting the EHT TB Sub-PPDU. That is, as in Appendix 3 to be described later, two Spatial Reuse fields in the EHT Common Info field may be configured, and a Spatial Reuse field in the U-SIG of the EHT TB Sub-PPDU may be configured. As the Spatial Reuse value considering only the BW of the EHT TB Sub-PPDU, the resolution is small and thus the performance may be good, but a problem may occur depending on the BW indicator value of the TB PPDU.
- each Spatial Reuse value can be normalized to a 20MHz channel regardless of the corresponding channel size.
- the Spatial Reuse value corresponding to 40MHz is normalized to 20MHz by subtracting 6 (or 20log2) from the corresponding PSR value (in dBm, that is, a value calculated based on 40MHz) before normalization. can be set.
- the Spatial Reuse value corresponding to 80MHz is normalized to 20MHz by subtracting 12 (or 20log4) from the corresponding PSR value (in dBm, that is, a value calculated based on 80MHz) before normalization. value can be set.
- the Spatial Reuse value corresponding to 160MHz is normalized to 20MHz by subtracting 18 (or 20log8) from the corresponding PSR value (in dBm, that is, a value calculated based on 160MHz) before normalization. value can be set.
- the four spatial reuse fields may have the same spatial reuse value and may mean a spatial reuse value corresponding to a 20 MHz channel.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 20MHz subchannel. In addition, in the case of transmitting the 2.4GHz band TB PPDU, it may be set to the same value as the Spatial reuse field 1. The reason is that because 40 MHz channelization overlaps in the 2.4 GHz band, it cannot be determined which channelization the OBSS STA that decoded the TB PPDU in a specific 20 MHz channel used is simply set to the same value.
- Spatial reuse field 3 may be set equal to 1, and spatial reuse 4 may be set equal to 2.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 20MHz subchannel.
- Spatial reuse field 3 In general, it may mean the spatial reuse value of the second high 20MHz subchannel.
- Spatial reuse field 4 In general, it may mean the highest spatial reuse value of the 20MHz subchannel.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 40MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 40MHz subchannel.
- Spatial reuse field 3 In general, it may mean the spatial reuse value of the second high 40MHz subchannel.
- Spatial reuse field 4 In general, it may mean the highest spatial reuse value of the 40MHz subchannel.
- the four spatial reuse subfields may have the same spatial reuse value and may mean a spatial reuse value corresponding to a 20 MHz channel. Alternatively, spatial reuse 3 and 4 may be reserved.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 20MHz subchannel. In addition, in the case of transmitting the 2.4GHz band TB PPDU, it may be set to the same value as the Spatial reuse field 1. The reason is that because 40MHz channelization overlaps in the 2.4GHz band, it cannot be determined which channelization the OBSS STA that decoded the TB PPDU in a specific 20MHz channel used is simply set to the same value.
- Spatial reuse field 3 may be set equal to 1, and spatial reuse 4 may be set equal to 2. Alternatively, spatial reuse 3 and 4 may be reserved.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 40MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 40MHz subchannel.
- Spatial reuse field 3 may be set equal to 1, and spatial reuse 4 may be set equal to 2. Alternatively, spatial reuse 3 and 4 may be reserved.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 20MHz subchannel.
- Spatial reuse field 3 In general, it may mean the spatial reuse value of the second high 20MHz subchannel.
- Spatial reuse field 4 In general, it may mean the highest spatial reuse value of the 20MHz subchannel.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 80MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 80MHz subchannel.
- Spatial reuse field 3 may be set equal to 1, and spatial reuse 4 may be set equal to 2. Alternatively, spatial reuse 3 and 4 may be reserved.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 40MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 40MHz subchannel.
- Spatial reuse field 3 In general, it may mean the spatial reuse value of the second high 40MHz subchannel.
- Spatial reuse field 4 In general, it may mean the highest spatial reuse value of the 40MHz subchannel.
- Spatial reuse field 1 In general, it may mean the lowest spatial reuse value of the 160MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 160MHz subchannel.
- Spatial reuse field 3 may be set equal to 1, and spatial reuse 4 may be set equal to 2. Alternatively, spatial reuse 3 and 4 may be reserved.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 80MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the second lower 80MHz subchannel.
- Spatial reuse field 3 In general, it may mean the spatial reuse value of the second high 80MHz subchannel.
- Spatial reuse field 4 In general, it may mean the highest spatial reuse value of the 80MHz subchannel.
- Two spatial reuse fields can be configured by copying spatial reuse fields 1 and 2 of the Trigger frame as they are. That is, it may have the same spatial reuse value and may mean a spatial reuse value corresponding to a 20 MHz channel.
- Two spatial reuse fields can be configured by copying spatial reuse fields 1 and 2 of the Trigger frame as they are. That is, it can be as follows.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 20MHz subchannel. In addition, even when the TB PPDU is transmitted in the 2.4 GHz band, it may be set to the same value as the Spatial reuse field 1. The reason is that because 40 MHz channelization overlaps in the 2.4 GHz band, it cannot be determined which channelization the OBSS STA that decoded the TB PPDU in a specific 20 MHz channel used is simply set to the same value.
- Two spatial reuse fields can be configured by copying spatial reuse fields 1 and 2 of the Trigger frame as they are. That is, it can be as follows.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 40MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 40MHz subchannel.
- the two spatial reuse fields can be configured by copying spatial reuse fields 1 and 3 of the Trigger frame as they are, or by copying 2 and 4 as they are. Alternatively, you can select and copy one of the two values in each field as shown below.
- the selection criterion may be a large or small value.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest or second lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean a spatial reuse value of the highest or second highest 20MHz subchannel.
- the two spatial reuse fields can be defined differently for each 40 MHz (that is, the U-SIG configuration can be different for each 40 MHz), and at low 40 MHz, spatial reuse fields 1 and 2 of the Trigger frame can be copied as they are and configured with high At 40 MHz, spatial reuse fields 3 and 4 of the trigger frame can be copied and configured. That is, it can be as follows.
- Spatial reuse field at low 40MHz 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field at low 40MHz 2 In general, it may mean the spatial reuse value of the second low 20MHz subchannel.
- Spatial reuse field at high 40MHz 1 In general, it may mean the spatial reuse value of the second high 20MHz subchannel.
- Spatial reuse field at high 40MHz 2 In general, it may mean the highest spatial reuse value of the 20MHz subchannel.
- Two spatial reuse fields can be configured by copying spatial reuse fields 1 and 2 of the Trigger frame as they are. That is, it can be as follows.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 80MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 80MHz subchannel.
- the two spatial reuse fields can be configured by copying spatial reuse fields 1 and 3 of the Trigger frame as they are, or by copying 2 and 4 as they are. Alternatively, you can select and copy one of the two values in each field as shown below.
- the selection criterion may be a large or small value.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest or second lowest 40MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the highest or second highest 40MHz subchannel.
- the two spatial reuse fields can be defined differently for each 80 MHz (that is, the U-SIG configuration can be different for each 80 MHz), and at low 80 MHz, spatial reuse fields 1 and 2 of the Trigger frame can be copied as they are and configured, and high At 80 MHz, spatial reuse fields 3 and 4 of the trigger frame can be copied as they are and configured. That is, it can be as follows.
- Spatial reuse field at low 80MHz 1 In general, it may mean the spatial reuse value of the lowest 40MHz subchannel.
- Spatial reuse field at low 80MHz 2 In general, it may mean the spatial reuse value of the second low 40MHz subchannel.
- Spatial reuse field at high 80MHz 1 In general, it may mean the spatial reuse value of the second high 40MHz subchannel.
- Spatial reuse field at high 80MHz 2 In general, it may mean the highest spatial reuse value of a 40MHz subchannel.
- Two spatial reuse fields can be configured by copying spatial reuse fields 1 and 2 of the Trigger frame as they are. That is, it can be as follows.
- Spatial reuse field 1 In general, it may mean the lowest spatial reuse value of the 160MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 160MHz subchannel.
- the two spatial reuse fields can be configured by copying spatial reuse fields 1 and 3 of the Trigger frame as they are, or by copying 2 and 4 as they are. Alternatively, you can select and copy one of the two values in each field as shown below.
- the selection criterion may be a large or small value.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest or second lowest 80MHz subchannel.
- Spatial reuse field 2 In general, it may mean the spatial reuse value of the highest or second highest 80MHz subchannel.
- the two spatial reuse fields can be defined differently for each 160 MHz (that is, the U-SIG configuration can be different for each 160 MHz), and at the low 160 MHz, spatial reuse fields 1 and 2 of the Trigger frame can be copied as they are and configured with high At 160 MHz, spatial reuse fields 3 and 4 of the trigger frame can be copied as they are and configured. That is, it can be as follows.
- Spatial reuse field at low 160 MHz 1 In general, it may mean the spatial reuse value of the lowest 80 MHz subchannel.
- Spatial reuse field at low 160 MHz 2 In general, it may mean the spatial reuse value of the second low 80 MHz subchannel.
- Spatial reuse field at high 160 MHz 1 In general, it may mean the spatial reuse value of the second high 80 MHz subchannel.
- Spatial reuse field at high 160 MHz 2 In general, it may mean the highest spatial reuse value of the 80 MHz subchannel.
- the two spatial reuse fields may have the same spatial reuse value and may mean a spatial reuse value corresponding to a 20 MHz channel.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 20MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 20MHz subchannel. In addition, even when the TB PPDU is transmitted in the 2.4 GHz band, it may be set to the same value as the Spatial reuse field 1. The reason is that because 40 MHz channelization overlaps in the 2.4 GHz band, it cannot be determined which channelization the OBSS STA that decoded the TB PPDU in a specific 20 MHz channel used is simply set to the same value.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 40MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 40MHz subchannel.
- Spatial reuse field 1 In general, it may mean the spatial reuse value of the lowest 80MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 80MHz subchannel.
- Spatial reuse field 1 In general, it may mean the lowest spatial reuse value of the 160MHz subchannel.
- Spatial reuse field 2 In general, it may mean the highest spatial reuse value of the 160MHz subchannel.
- 22 is a flowchart illustrating the operation of the transmitting apparatus according to the present embodiment.
- the example of FIG. 22 may be performed by a transmitting STA or a transmitting apparatus (AP and/or non-AP STA).
- the transmitting device may obtain (obtain) information about the above-described tone plan.
- the information about the tone plan includes the size and location of the RU, control information related to the RU, information about the frequency band including the RU, information about the STA receiving the RU, and the like.
- step S2220 the transmitting device may configure/generate a PPDU based on the acquired control information.
- the step of configuring/generating the PPDU may include configuring/generating each field of the PPDU. That is, step S2220 includes configuring the EHT-SIG field including control information about the tone plan. That is, in step S2220, the step of configuring a field including control information (eg, N bitmap) indicating the size/position of the RU and/or the identifier of the STA receiving the RU (eg, AID) It may include the step of configuring the containing field.
- control information eg, N bitmap
- step S2220 may include generating an STF/LTF sequence transmitted through a specific RU.
- the STF/LTF sequence may be generated based on a preset STF generation sequence/LTF generation sequence.
- step S2220 may include generating a data field (ie, MPDU) transmitted through a specific RU.
- a data field ie, MPDU
- the transmitting device may transmit the PPDU configured in step S2220 to the receiving device based on step S1830.
- the transmitting device may perform at least one of CSD, spatial mapping, IDFT/IFFT operation, GI insertion, and the like.
- a signal/field/sequence constructed according to this specification may be transmitted in the form of FIG. 10 .
- FIG. 23 is a flowchart illustrating the operation of the receiving apparatus according to the present embodiment.
- the above-described PPDU may be received according to the example of FIG. 22 .
- the example of FIG. 23 may be performed by a receiving STA or a receiving device (AP and/or non-AP STA).
- the receiving device may receive all or part of the PPDU through step S2310.
- the received signal may be in the form of FIG. 10 .
- step S2310 may be determined based on step S2230 of FIG. 22 . That is, in step S2310, an operation for restoring the results of the CSD, spatial mapping, IDFT/IFFT operation, and GI insert operation applied in step S2230 may be performed.
- the receiving device may perform decoding on all/part of the PPDU.
- the receiving device may obtain control information related to the tone plan (ie, RU) from the decoded PPDU.
- the receiving device may decode the L-SIG and EHT-SIG of the PPDU based on the legacy STF/LTF, and obtain information included in the L-SIG and EHT SIG fields.
- Information on various tone plans (ie, RUs) described in this specification may be included in the EHT-SIG, and the receiving STA may acquire information about the tone plans (ie, RUs) through the EHT-SIG.
- the receiving device may decode the remaining part of the PPDU based on the information about the tone plan (ie, RU) obtained in step S2320. For example, the receiving STA may decode the STF/LTF field of the PPDU based on information about one plan (ie, RU). In addition, the receiving STA may decode the data field of the PPDU based on the information on the tone plan (ie, the RU) and obtain the MPDU included in the data field.
- the receiving device may perform a processing operation of transferring the decoded data to a higher layer (eg, MAC layer) in step S2330.
- a processing operation of transferring the decoded data to a higher layer (eg, MAC layer) in step S2330.
- a subsequent operation may be performed.
- 24 is a flowchart illustrating a procedure for an AP to configure a trigger frame and a TB PPDU supporting space reuse according to the present embodiment.
- the example of FIG. 24 may be performed in a network environment in which a next-generation wireless LAN system (IEEE 802.11be or EHT wireless LAN system) is supported.
- the next-generation wireless LAN system is a wireless LAN system improved from the 802.11ax system, and may satisfy backward compatibility with the 802.11ax system.
- the example of FIG. 24 is performed in a transmitting station (STA), and the transmitting STA may correspond to an access point (AP) STA.
- the receiving STA of FIG. 24 may correspond to a non-AP STA.
- This embodiment proposes a method of configuring a trigger frame and a TB PPDU that simultaneously support spatial reuse of an 802.11ax (or HE) wireless LAN system and an 802.11be (or EHT) wireless LAN system.
- 802.11ax or HE
- 802.11be or EHT
- step S2410 the transmitting STA (station) transmits a trigger frame to the receiving STA.
- step S2420 the transmitting STA receives a TB PPDU (Trigger Based Physical Protocol Data Unit) through a preset frequency band from the receiving STA.
- TB PPDU Trigger Based Physical Protocol Data Unit
- the trigger frame includes a common information field and a special user information field.
- the common information field includes first to fourth spatial reuse fields.
- the special user information field includes fifth and sixth spatial reuse fields.
- the common information field is an EHT variant Common Info field, and includes four spatial reuse fields (HSR1, HSR2, HSR3, HSR4).
- the four spatial reuse fields (HSR1, HSR2, HSR3, and HSR4) are defined for spatial reuse of the OBSS HE STA.
- the special user information field is included in the trigger frame when an Association Identifier (AID) is 2007, and includes two spatial reuse fields ESR1 and ESR2.
- the two spatial reuse fields (ESR1, ESR2) are defined for spatial reuse of an OBSS EHT STA.
- the OBSS HE STA may determine that the trigger frame triggers a 20 MHz HE TB PPDU.
- the first and third spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers a 40 MHz HE TB PPDU.
- the first and second spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers an 80 MHz HE TB PPDU.
- the first and second spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers a 160 MHz HE TB PPDU.
- the OBSS HE STA may determine that the trigger frame triggers a 160 MHz HE TB PPDU. Since the OBSS HE STA can operate in one 160 MHz channel among the two 160 MHz channels through which the EHT TB PPDU is transmitted, the HSR value must be a value that can represent both 160 MHz channels. In this case, it is preferable to set the HSR value to the value of the weak channel because it is possible to reduce the interference by lowering the transmission power of the OBSS STA.
- each frequency band four spatial reuse fields (HSR1, HSR2, HSR3, HSR4) in the EHT variant Common Info field are 2 in the Special User Info field.
- ESR1, ESR2 the spatial reuse fields in which the trigger frame is transmitted.
- the values of the first to fourth spatial reuse fields may be spatial reuse values for the 20 MHz band. That is, the first to fourth spatial reuse fields may include the same spatial reuse value for the 20 MHz band.
- the spatial reuse value for the 20 MHz band may be a value used to calculate transmit power that the OBSS HE STA can access for the 20 MHz band.
- the values of the first and third spatial reuse fields are spatial reuse values for a first 20 MHz subchannel having a low frequency in the 40 MHz band
- the second and fourth spatial reuse The value of the field may be a spatial reuse value for the second 20MHz subchannel having a high frequency in the 40MHz band.
- the spatial reuse value for the second 20 MHz subchannel may be set to be the same as the spatial reuse value for the first 20 MHz subchannel.
- the spatial reuse value for the first 20 MHz subchannel is a value used to calculate the transmission power that an Overlapping Basic Service Set (OBSS) High Efficiency (HE) STA can access for the first 20 MHz subchannel.
- OBSS Basic Service Set
- HE High Efficiency
- the spatial reuse value for the second 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 20 MHz subchannel.
- the OBSS HE STA interprets the value of the first spatial reuse field as a spatial reuse value for a first 20 MHz subchannel having the lowest frequency in the 80 MHz band, and the second space
- the value of the reuse field is interpreted as a spatial reuse value for a second 20MHz subchannel having the second lowest frequency in the 80MHz band
- the value of the third spatial reuse field is interpreted as a third spatial reuse field having the second highest frequency in the 80MHz band. It may be interpreted as a spatial reuse value for a 20MHz subchannel
- the value of the fourth spatial reuse field may be interpreted as a spatial reuse value for a fourth 20MHz subchannel having the highest frequency in the 80MHz band.
- the AP sets the first and second spatial reuse fields to values of the spatial reuse field representing the first 40 MHz subchannel having a low frequency in the 80 MHz band, and sets the third and fourth spatial reuse fields to the 80 MHz It can be set as a value of a spatial reuse field representing a second 40 MHz subchannel having a high frequency in the band.
- the spatial reuse value for the first 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the first 20 MHz subchannel.
- the spatial reuse value for the second 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 20 MHz subchannel.
- the spatial reuse value for the third 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the third 20 MHz subchannel.
- the spatial reuse value for the fourth 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the fourth 20 MHz subchannel.
- the OBSS HE STA interprets the value of the first spatial reuse field as a spatial reuse value for a first 40 MHz subchannel having the lowest frequency in the 160 MHz band, and the second space
- the value of the reuse field is interpreted as a spatial reuse value for a second 40MHz subchannel having the second lowest frequency in the 160MHz band
- the value of the third spatial reuse field is interpreted as a third spatial reuse field having the second highest frequency in the 160MHz band. It may be interpreted as a spatial reuse value for a 40MHz subchannel
- the value of the fourth spatial reuse field may be interpreted as a spatial reuse value for a fourth 40MHz subchannel having the highest frequency in the 160MHz band.
- the AP sets the first and second spatial reuse fields to values of a spatial reuse field representing a first 80 MHz subchannel having a low frequency in the 160 MHz band, and sets the third and fourth spatial reuse fields to the 80 MHz It may be set as a value of a spatial reuse field representing a second 80 MHz subchannel having a high frequency in the band.
- the spatial reuse value for the first 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the first 40 MHz subchannel.
- the spatial reuse value for the second 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 40 MHz subchannel.
- the spatial reuse value for the third 40MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the third 40MHz subchannel.
- the spatial reuse value for the fourth 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the fourth 40 MHz subchannel.
- the OBSS HE STA can decode only the first bandwidth field (2-bit UL BW subfield) to be described later (the second bandwidth field (2-bit UL Bandwidth Extension subfield) cannot be interpreted) , the preset frequency band may be interpreted as a 160 MHz band.
- the OBSS HE STA interprets the value of the first spatial reuse field as a spatial reuse value for the lowest first 40MHz subchannel in the 160MHz band (where it is located), and the value of the second spatial reuse field is interpreted as a spatial reuse value for a second 40MHz subchannel second lowest in the 160MHz band, and the value of the third spatial reuse field is a spatial reuse value for a third 40MHz subchannel second highest in the 160MHz band , and the value of the fourth spatial reuse field may be interpreted as a spatial reuse value for a fourth 40 MHz subchannel, which is the highest in the 160 MHz band.
- the AP sets the first spatial reuse field to a value of the spatial reuse field representing the first 40 MHz subchannel having the lowest frequency in each 160 MHz channel of the 320 MHz band, and sets the second spatial reuse field to the 320 MHz band set to a value of a spatial reuse field representing a second 40MHz subchannel having the second lowest frequency in each 160MHz channel of 3
- the spatial reuse value for the first 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the first 40 MHz subchannel.
- the spatial reuse value for the second 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 40 MHz subchannel.
- the spatial reuse value for the third 40MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the third 40MHz subchannel.
- the spatial reuse value for the fourth 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the fourth 40 MHz subchannel.
- the common information field may include a first bandwidth field
- the special user information field may include a second bandwidth field.
- the bandwidth of the preset frequency band may be set based on the first and second bandwidth fields. For example, when the first bandwidth field is set to 0 and the second bandwidth field is set to 0, the preset frequency band may be 20 MHz. When the first bandwidth field is set to 1 and the second bandwidth field is set to 0, the preset frequency band may be 40 MHz. When the first bandwidth field is set to 2 and the second bandwidth field is set to 0, the preset frequency band may be 80 MHz. When the first bandwidth field is set to 3 and the second bandwidth field is set to 1, the preset frequency band may be 160 MHz.
- the preset frequency band may be 320 - 1 MHz.
- the preset frequency band may be 320-2 MHz.
- the first bandwidth field is a field indicating the bandwidth of the HE TB PPDU. By using the first and second bandwidth fields together, the bandwidth of the EHT TB PPDU may also be indicated.
- the TB PPDU may include a Universal-Signal (U-SIG) field.
- the U-SIG field may include seventh and eighth spatial reuse fields.
- the seventh spatial reuse field may be configured by duplicating the fifth spatial reuse field.
- the eighth spatial reuse field may be configured by duplicating the sixth spatial reuse field.
- the values of the seventh and eighth spatial reuse fields may be normalized values for each 20 MHz subchannel. Since the seventh spatial reuse field duplicates the fifth spatial reuse field and the eighth spatial reuse field duplicates the sixth spatial reuse field, the values of the fifth and sixth spatial reuse fields are also 20 MHz subchannels. It may be a normalized value. Accordingly, the values of the first to fourth spatial reuse fields may also be normalized values for each 20 MHz subchannel.
- the fifth (or seventh) spatial reuse field may be applied to each 20 MHz subchannel of the first 40 MHz subband in the 80 MHz band, and the sixth ( Alternatively, 8) the spatial reuse field may be applied to each 20MHz subchannel of the second 40MHz subband in the 80MHz band.
- the fifth (or seventh) spatial reuse field may be applied to each 20 MHz subchannel of the first 80 MHz subband in the 160 MHz band
- the sixth (or eighth) The spatial reuse field may be applied to each 20MHz subchannel of the second 80MHz subband in the 160MHz band.
- the fifth (or seventh) spatial reuse field is in each 20MHz subchannel of the first 160MHz subband in the 320MHz-1 or 320MHz-2 band. may be applied, and the sixth (or eighth) spatial reuse field may be applied to each 20MHz subchannel of the second 160MHz subband in the 320MHz-1 or 320MHz-2 band.
- the first to eighth spatial reuse fields each consist of 4 bits, and the same value as the value defined in the 802.11ax wireless LAN system may be used (see Table 3).
- the transmitting STA informs the OBSS STA of an allowable interference power value for a specific band (or a specific channel) through the spatial reuse value, and the OBSS STA informs the OBSS STA of the interference power value and the AP TX Power subfield.
- a signal may be transmitted by deriving transmission power using the value and performing spatial reuse in the specific band (or specific channel).
- the transmitting STA may not receive interference due to the OBSS STA when receiving the TB PPDU. That is, by enabling spatial reuse of the OBSS STA, the present embodiment has the effect of improving throughput and efficiency by stably using transmission resources for a specific band without collision.
- the trigger frame is divided into an HE variant and an EHT variant, and the common information field and the user information field may be configured differently (see FIGS. 16 and 17 for the common information field, and FIG. 20 for the user information field) .
- the TB PPDU may be an EHT TB PPDU, wherein the EHT TB PPDU is a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF), a Legacy-Signal (L-SIG), and a RL-SIG. (Repeated L-SIG), U-SIG (Universal-Signal), EHT-STF and EHT-LTFs, and data fields may be included. That is, the EHT TB PPDU is defined in a format except for the EHT-SIG in the EHT MU PPDU.
- the TB PPDU may be a Trigger Based Aggregated-Physical Protocol Data Unit (TB A-PPDU) in which a High Efficiency (HE) TB PPDU and an Extreme High Throughput (EHT) TB PPDU are aggregated.
- TB A-PPDU Trigger Based Aggregated-Physical Protocol Data Unit
- HE High Efficiency
- EHT Extreme High Throughput
- 25 is a flowchart illustrating a procedure for an STA to configure a trigger frame and a TB PPDU supporting spatial reuse according to the present embodiment.
- the example of FIG. 25 may be performed in a network environment in which a next-generation wireless LAN system (IEEE 802.11be or EHT wireless LAN system) is supported.
- the next-generation wireless LAN system is a wireless LAN system improved from the 802.11ax system, and may satisfy backward compatibility with the 802.11ax system.
- the example of FIG. 25 is performed by a receiving STA (station), and the receiving STA may correspond to a non-AP STA.
- the transmitting STA of FIG. 25 may correspond to an access point (AP) STA.
- AP access point
- This embodiment proposes a method of configuring a trigger frame and a TB PPDU that simultaneously support spatial reuse of an 802.11ax (or HE) wireless LAN system and an 802.11be (or EHT) wireless LAN system.
- 802.11ax or HE
- 802.11be or EHT
- step S2510 the receiving STA (station) receives a trigger frame from the transmitting STA.
- step S2520 the receiving STA transmits a TB Trigger Based Physical Protocol Data Unit (TB PPDU) to the transmitting STA through a preset frequency band.
- TB PPDU Trigger Based Physical Protocol Data Unit
- the trigger frame includes a common information field and a special user information field.
- the common information field includes first to fourth spatial reuse fields.
- the special user information field includes fifth and sixth spatial reuse fields.
- the common information field is an EHT variant Common Info field, and includes four spatial reuse fields (HSR1, HSR2, HSR3, HSR4).
- the four spatial reuse fields (HSR1, HSR2, HSR3, and HSR4) are defined for spatial reuse of the OBSS HE STA.
- the special user information field is included in the trigger frame when an Association Identifier (AID) is 2007, and includes two spatial reuse fields ESR1 and ESR2.
- the two spatial reuse fields (ESR1, ESR2) are defined for spatial reuse of an OBSS EHT STA.
- the OBSS HE STA may determine that the trigger frame triggers a 20 MHz HE TB PPDU.
- the first and third spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers a 40 MHz HE TB PPDU.
- the first and second spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers an 80 MHz HE TB PPDU.
- the first and second spatial reuse fields are set to values of the fifth spatial reuse field
- the OBSS HE STA may determine that the trigger frame triggers a 160 MHz HE TB PPDU.
- the OBSS HE STA may determine that the trigger frame triggers a 160 MHz HE TB PPDU. Since the OBSS HE STA can operate in one 160 MHz channel among the two 160 MHz channels through which the EHT TB PPDU is transmitted, the HSR value must be a value that can represent both 160 MHz channels. In this case, it is preferable to set the HSR value to the value of the weak channel because it is possible to reduce the interference by lowering the transmission power of the OBSS STA.
- each frequency band four spatial reuse fields (HSR1, HSR2, HSR3, HSR4) in the EHT variant Common Info field are 2 in the Special User Info field.
- ESR1, ESR2 the spatial reuse fields in which the trigger frame is transmitted.
- the values of the first to fourth spatial reuse fields may be spatial reuse values for the 20 MHz band. That is, the first to fourth spatial reuse fields may include the same spatial reuse value for the 20 MHz band.
- the spatial reuse value for the 20 MHz band may be a value used to calculate transmit power that the OBSS HE STA can access for the 20 MHz band.
- the values of the first and third spatial reuse fields are spatial reuse values for a first 20 MHz subchannel having a low frequency in the 40 MHz band
- the second and fourth spatial reuse The value of the field may be a spatial reuse value for the second 20MHz subchannel having a high frequency in the 40MHz band.
- the spatial reuse value for the second 20 MHz subchannel may be set to be the same as the spatial reuse value for the first 20 MHz subchannel.
- the spatial reuse value for the first 20 MHz subchannel is a value used to calculate the transmission power that an Overlapping Basic Service Set (OBSS) High Efficiency (HE) STA can access for the first 20 MHz subchannel.
- OBSS Basic Service Set
- HE High Efficiency
- the spatial reuse value for the second 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 20 MHz subchannel.
- the OBSS HE STA interprets the value of the first spatial reuse field as a spatial reuse value for a first 20 MHz subchannel having the lowest frequency in the 80 MHz band, and the second space
- the value of the reuse field is interpreted as a spatial reuse value for a second 20MHz subchannel having the second lowest frequency in the 80MHz band
- the value of the third spatial reuse field is interpreted as a third spatial reuse field having the second highest frequency in the 80MHz band. It may be interpreted as a spatial reuse value for a 20MHz subchannel
- the value of the fourth spatial reuse field may be interpreted as a spatial reuse value for a fourth 20MHz subchannel having the highest frequency in the 80MHz band.
- the AP sets the first and second spatial reuse fields to values of the spatial reuse field representing the first 40 MHz subchannel having a low frequency in the 80 MHz band, and sets the third and fourth spatial reuse fields to the 80 MHz It can be set as a value of a spatial reuse field representing a second 40 MHz subchannel having a high frequency in the band.
- the spatial reuse value for the first 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the first 20 MHz subchannel.
- the spatial reuse value for the second 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 20 MHz subchannel.
- the spatial reuse value for the third 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the third 20 MHz subchannel.
- the spatial reuse value for the fourth 20 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the fourth 20 MHz subchannel.
- the OBSS HE STA interprets the value of the first spatial reuse field as a spatial reuse value for a first 40 MHz subchannel having the lowest frequency in the 160 MHz band, and the second space
- the value of the reuse field is interpreted as a spatial reuse value for a second 40MHz subchannel having the second lowest frequency in the 160MHz band
- the value of the third spatial reuse field is interpreted as a third spatial reuse field having the second highest frequency in the 160MHz band. It may be interpreted as a spatial reuse value for a 40MHz subchannel
- the value of the fourth spatial reuse field may be interpreted as a spatial reuse value for a fourth 40MHz subchannel having the highest frequency in the 160MHz band.
- the AP sets the first and second spatial reuse fields to values of a spatial reuse field representing a first 80 MHz subchannel having a low frequency in the 160 MHz band, and sets the third and fourth spatial reuse fields to the 80 MHz It may be set as a value of a spatial reuse field representing a second 80 MHz subchannel having a high frequency in the band.
- the spatial reuse value for the first 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the first 40 MHz subchannel.
- the spatial reuse value for the second 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 40 MHz subchannel.
- the spatial reuse value for the third 40MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the third 40MHz subchannel.
- the spatial reuse value for the fourth 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the fourth 40 MHz subchannel.
- the OBSS HE STA can decode only the first bandwidth field (2-bit UL BW subfield) to be described later (the second bandwidth field (2-bit UL Bandwidth Extension subfield) cannot be interpreted) , the preset frequency band may be interpreted as a 160 MHz band.
- the OBSS HE STA interprets the value of the first spatial reuse field as a spatial reuse value for the lowest first 40MHz subchannel in the 160MHz band (where it is located), and the value of the second spatial reuse field is interpreted as a spatial reuse value for a second 40MHz subchannel second lowest in the 160MHz band, and the value of the third spatial reuse field is a spatial reuse value for a third 40MHz subchannel second highest in the 160MHz band , and the value of the fourth spatial reuse field may be interpreted as a spatial reuse value for a fourth 40 MHz subchannel, which is the highest in the 160 MHz band.
- the AP sets the first spatial reuse field to a value of the spatial reuse field representing the first 40 MHz subchannel having the lowest frequency in each 160 MHz channel of the 320 MHz band, and sets the second spatial reuse field to the 320 MHz band set to a value of a spatial reuse field representing a second 40MHz subchannel having the second lowest frequency in each 160MHz channel of 3
- the spatial reuse value for the first 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the first 40 MHz subchannel.
- the spatial reuse value for the second 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the second 40 MHz subchannel.
- the spatial reuse value for the third 40MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the third 40MHz subchannel.
- the spatial reuse value for the fourth 40 MHz subchannel may be a value used to calculate transmit power that the OBSS HE STA can access for the fourth 40 MHz subchannel.
- the common information field may include a first bandwidth field
- the special user information field may include a second bandwidth field.
- the bandwidth of the preset frequency band may be set based on the first and second bandwidth fields. For example, when the first bandwidth field is set to 0 and the second bandwidth field is set to 0, the preset frequency band may be 20 MHz. When the first bandwidth field is set to 1 and the second bandwidth field is set to 0, the preset frequency band may be 40 MHz. When the first bandwidth field is set to 2 and the second bandwidth field is set to 0, the preset frequency band may be 80 MHz. When the first bandwidth field is set to 3 and the second bandwidth field is set to 1, the preset frequency band may be 160 MHz.
- the preset frequency band may be 320 - 1 MHz.
- the preset frequency band may be 320-2 MHz.
- the first bandwidth field is a field indicating the bandwidth of the HE TB PPDU. By using the first and second bandwidth fields together, the bandwidth of the EHT TB PPDU may also be indicated.
- the TB PPDU may include a Universal-Signal (U-SIG) field.
- the U-SIG field may include seventh and eighth spatial reuse fields.
- the seventh spatial reuse field may be configured by duplicating the fifth spatial reuse field.
- the eighth spatial reuse field may be configured by duplicating the sixth spatial reuse field.
- the values of the seventh and eighth spatial reuse fields may be normalized values for each 20 MHz subchannel. Since the seventh spatial reuse field duplicates the fifth spatial reuse field and the eighth spatial reuse field duplicates the sixth spatial reuse field, the values of the fifth and sixth spatial reuse fields are also 20 MHz subchannels. It may be a normalized value. Accordingly, the values of the first to fourth spatial reuse fields may also be normalized values for each 20 MHz subchannel.
- the fifth (or seventh) spatial reuse field may be applied to each 20 MHz subchannel of the first 40 MHz subband in the 80 MHz band, and the sixth ( Alternatively, 8) the spatial reuse field may be applied to each 20MHz subchannel of the second 40MHz subband in the 80MHz band.
- the fifth (or seventh) spatial reuse field may be applied to each 20 MHz subchannel of the first 80 MHz subband in the 160 MHz band
- the sixth (or eighth) The spatial reuse field may be applied to each 20MHz subchannel of the second 80MHz subband in the 160MHz band.
- the fifth (or seventh) spatial reuse field is in each 20MHz subchannel of the first 160MHz subband in the 320MHz-1 or 320MHz-2 band. may be applied, and the sixth (or eighth) spatial reuse field may be applied to each 20MHz subchannel of the second 160MHz subband in the 320MHz-1 or 320MHz-2 band.
- the first to eighth spatial reuse fields each consist of 4 bits, and the same value as the value defined in the 802.11ax wireless LAN system may be used (see Table 3).
- the transmitting STA informs the OBSS STA of an allowable interference power value for a specific band (or a specific channel) through the spatial reuse value, and the OBSS STA informs the OBSS STA of the interference power value and the AP TX Power subfield.
- a signal may be transmitted by deriving transmission power using the value and performing spatial reuse in the specific band (or specific channel).
- the transmitting STA may not receive interference due to the OBSS STA when receiving the TB PPDU. That is, by enabling spatial reuse of the OBSS STA, the present embodiment has the effect of improving throughput and efficiency by stably using transmission resources for a specific band without collision.
- the trigger frame is divided into an HE variant and an EHT variant, and the common information field and the user information field may be configured differently (see FIGS. 16 and 17 for the common information field, and FIG. 20 for the user information field) .
- the TB PPDU may be an EHT TB PPDU, wherein the EHT TB PPDU is a Legacy-Short Training Field (L-STF), a Legacy-Long Training Field (L-LTF), a Legacy-Signal (L-SIG), and a RL-SIG. (Repeated L-SIG), U-SIG (Universal-Signal), EHT-STF and EHT-LTFs, and data fields may be included. That is, the EHT TB PPDU is defined in a format except for the EHT-SIG in the EHT MU PPDU.
- the TB PPDU may be a Trigger Based Aggregated-Physical Protocol Data Unit (TB A-PPDU) in which a High Efficiency (HE) TB PPDU and an Extreme High Throughput (EHT) TB PPDU are aggregated.
- TB A-PPDU Trigger Based Aggregated-Physical Protocol Data Unit
- HE High Efficiency
- EHT Extreme High Throughput
- the technical features of the present specification described above may be applied to various devices and methods.
- the above-described technical features of the present specification may be performed/supported through the apparatus of FIGS. 1 and/or 11 .
- the technical features of the present specification described above may be applied only to a part of FIGS. 1 and/or 11 .
- the technical features of the present specification described above are implemented based on the processing chips 114 and 124 of FIG. 1 , or implemented based on the processors 111 and 121 and the memories 112 and 122 of FIG. 1 , or , may be implemented based on the processor 610 and the memory 620 of FIG. 11 .
- the apparatus of the present specification may receive a trigger frame from a transmitting station (STA); and transmits a TB Trigger Based Physical Protocol Data Unit (TB PPDU) to the transmitting STA through a preset frequency band.
- STA transmitting station
- TB PPDU Physical Protocol Data Unit
- the technical features of the present specification may be implemented based on a CRM (computer readable medium).
- the CRM proposed by the present specification is at least one computer readable medium including at least one computer readable medium including instructions based on being executed by at least one processor.
- the CRM may include: receiving a trigger frame from a transmitting STA (station); and transmitting a TB Trigger Based Physical Protocol Data Unit (TB PPDU) to the transmitting STA through a preset frequency band.
- the instructions stored in the CRM of the present specification may be executed by at least one processor.
- At least one processor related to CRM in the present specification may be the processors 111 and 121 or the processing chips 114 and 124 of FIG. 1 , or the processor 610 of FIG. 11 .
- the CRM of the present specification may be the memories 112 and 122 of FIG. 1 , the memory 620 of FIG. 11 , or a separate external memory/storage medium/disk.
- Machine learning refers to a field that defines various problems dealt with in the field of artificial intelligence and studies methodologies to solve them. do.
- Machine learning is also defined as an algorithm that improves the performance of a certain task through continuous experience.
- An artificial neural network is a model used in machine learning, and may refer to an overall model having problem-solving ability, which is composed of artificial neurons (nodes) that form a network by combining synapses.
- An artificial neural network may be defined by a connection pattern between neurons of different layers, a learning process that updates model parameters, and an activation function that generates an output value.
- the artificial neural network may include an input layer, an output layer, and optionally one or more hidden layers. Each layer includes one or more neurons, and the artificial neural network may include neurons and synapses connecting neurons. In the artificial neural network, each neuron may output a function value of an activation function for input signals, weights, and biases input through synapses.
- Model parameters refer to parameters determined through learning, and include the weight of synaptic connections and the bias of neurons.
- the hyperparameter refers to a parameter to be set before learning in a machine learning algorithm, and includes a learning rate, the number of iterations, a mini-batch size, an initialization function, and the like.
- the purpose of learning the artificial neural network can be seen as determining the model parameters that minimize the loss function.
- the loss function may be used as an index for determining optimal model parameters in the learning process of the artificial neural network.
- Machine learning can be classified into supervised learning, unsupervised learning, and reinforcement learning according to a learning method.
- Supervised learning refers to a method of training an artificial neural network in a state where a label for training data is given. can mean Unsupervised learning may refer to a method of training an artificial neural network in a state where no labels are given for training data. Reinforcement learning can refer to a learning method in which an agent defined in an environment learns to select an action or sequence of actions that maximizes the cumulative reward in each state.
- machine learning implemented as a deep neural network (DNN) including a plurality of hidden layers is also called deep learning (deep learning), and deep learning is a part of machine learning.
- DNN deep neural network
- deep learning deep learning
- machine learning is used in a sense including deep learning.
- a robot can mean a machine that automatically handles or operates a task given by its own capabilities.
- a robot having a function of recognizing an environment and performing an operation by self-judgment may be referred to as an intelligent robot.
- Robots can be classified into industrial, medical, home, military, etc. according to the purpose or field of use.
- the robot may be provided with a driving unit including an actuator or a motor to perform various physical operations such as moving the robot joints.
- the movable robot includes a wheel, a brake, a propeller, and the like in the driving unit, and can travel on the ground or fly in the air through the driving unit.
- the extended reality is a generic term for virtual reality (VR), augmented reality (AR), and mixed reality (MR).
- VR technology provides only CG images of objects or backgrounds in the real world
- AR technology provides virtual CG images on top of images of real objects
- MR technology is a computer that mixes and combines virtual objects in the real world. graphic technology.
- MR technology is similar to AR technology in that it shows both real and virtual objects. However, there is a difference in that in AR technology, virtual objects are used in a form that complements real objects, whereas in MR technology, virtual objects and real objects are used with equal characteristics.
- HMD Head-Mount Display
- HUD Head-Up Display
- mobile phone tablet PC, laptop, desktop, TV, digital signage, etc.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
| Value | Meaning |
| 0 | PSR_DISALLOW |
| 1-12 | Reserved |
| 13 | SR_RESTRICTED |
| 14 | SR_DELAYED |
| 15 | PSR_AND_NON_SRG_OBSS_PD_PROHIBITED |
| UL BW | Bandwidth for HE TB PPDU (MHz) | UL Bandwidth Extension | Bandwidth for EHT TB PPDU (MHz) |
| 0 | 20 | 0 | 20 |
| 0 | 20 | 1 | Reserved |
| 0 | 20 | 2 | Reserved |
| 0 | 20 | 3 | Reserved |
| 1 | 40 | 0 | 40 |
| 1 | 40 | 1 | Reserved |
| 1 | 40 | 2 | Reserved |
| 1 | 40 | 3 | Reserved |
| 2 | 80 | 0 | 80 |
| 2 | 80 | 1 | Reserved |
| 2 | 80 | 2 | Reserved |
| 2 | 80 | 3 | Reserved |
| 3 | 160 | 0 | Reserved |
| 3 | 160 | 1 | 160 |
| 3 | 160 | 2 | 320-1 |
| 3 | 160 | 3 | 320-2 |
| UL BW | Bandwidth for HE TB PPDU (MHz) | UL Bandwidth Extension | Bandwidth for EHT TB PPDU (MHz) |
| 0 | 20 | 0 | 20 |
| 0 | 20 | 1 | Reserved |
| 0 | 20 | 2 | Reserved |
| 0 | 20 | 3 | Reserved |
| 1 | 40 | 0 | 40 |
| 1 | 40 | 1 | Reserved |
| 1 | 40 | 2 | Reserved |
| 1 | 40 | 3 | Reserved |
| 2 | 80 | 0 | 80 |
| 2 | 80 | 1 | 160 |
| 2 | 80 | 2 | 320-1 |
| 2 | 80 | 3 | 320-2 |
| 3 | 80 | 0 | 80 |
| 3 | 160 | 1 | 160 |
| 3 | 160 | 2 | 320-1 |
| 3 | 160 | 3 | 320-2 |
Claims (20)
- 무선랜 시스템에서,수신 STA(station)이, 송신 STA으로부터 트리거 프레임을 수신하는 단계; 및상기 수신 STA이, 상기 송신 STA에게 기설정된 주파수 대역을 통해 TB PPDU(Trigger Based Physical Protocol Data Unit)를 송신하는 단계를 포함하되,상기 트리거 프레임은 공통 정보 필드 및 특별 사용자 정보 필드를 포함하고,상기 공통 정보 필드는 제1 내지 제4 공간 재사용(Spatial Reuse) 필드를 포함하고,상기 특별 사용자 정보 필드는 제5 및 제6 공간 재사용 필드를 포함하고,상기 기설정된 주파수 대역이 20MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 40MHz 대역인 경우, 상기 제1 및 제3 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제2 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 80MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 160MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고, 및상기 기설정된 주파수 대역이 320MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 및 제6 공간 재사용 필드의 값 중 작은 값으로 설정되는방법.
- 제1항에 있어서,상기 기설정된 주파수 대역이 20MHz 대역인 경우,상기 제1 내지 제4 공간 재사용 필드의 값은 상기 20MHz 대역에 대한 공간 재사용 값인방법.
- 제1항에 있어서,상기 기설정된 주파수 대역이 40MHz 대역인 경우,상기 제1 및 제3 공간 재사용 필드의 값은 상기 40MHz 대역에서 주파수가 낮은 제1 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제2 및 제4 공간 재사용 필드의 값은 상기 40MHz 대역에서 주파수가 높은 제2 20MHz 서브채널에 대한 공간 재사용 값인방법.
- 제3항에 있어서,상기 TB PPDU가 2.4GHz 대역에서 송신되는 경우, 상기 제2 20MHz 서브채널에 대한 공간 재사용 값은 상기 제1 20MHz 서브채널에 대한 공간 재사용 값과 동일하게 설정되고,상기 제1 20MHz 서브채널에 대한 공간 재사용 값은 상기 제1 20MHz 서브채널에 대해 OBSS(Overlapping Basic Service Set) HE(High Efficiency) STA이 액세스(access)할 수 있는 전송 전력을 계산하기 위해 사용되는 값이고,상기 제2 20MHz 서브채널에 대한 공간 재사용 값은 상기 제2 20MHz 서브채널에 대해 OBSS HE STA이 액세스할 수 있는 전송 전력을 계산하기 위해 사용되는 값방법.
- 제1항에 있어서,상기 기설정된 주파수 대역이 80MHz 대역인 경우,상기 제1 공간 재사용 필드의 값은 상기 80MHz 대역에서 가장 낮은 제1 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제2 공간 재사용 필드의 값은 상기 80MHz 대역에서 두 번째로 낮은 제2 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제3 공간 재사용 필드의 값은 상기 80MHz 대역에서 두 번째로 높은 제3 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제4 공간 재사용 필드의 값은 상기 80MHz 대역에서 가장 높은 제4 20MHz 서브채널에 대한 공간 재사용 값인방법.
- 제1항에 있어서,상기 기설정된 주파수 대역이 160MHz 대역인 경우,상기 제1 공간 재사용 필드의 값은 상기 160MHz 대역에서 가장 낮은 제1 40MHz 서브채널에 대한 공간 재사용 값이고,상기 제2 공간 재사용 필드의 값은 상기 160MHz 대역에서 두 번째로 낮은 제2 40MHz 서브채널에 대한 공간 재사용 값이고,상기 제3 공간 재사용 필드의 값은 상기 160MHz 대역에서 두 번째로 높은 제3 40MHz 서브채널에 대한 공간 재사용 값이고,상기 제4 공간 재사용 필드의 값은 상기 160MHz 대역에서 가장 높은 제4 40MHz 서브채널에 대한 공간 재사용 값인방법.
- 제1항에 있어서,상기 기설정된 주파수 대역이 320MHz 대역인 경우,상기 제1 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 가장 낮은 제1 40MHz 서브채널을 대표하는 공간 재사용 값이고,상기 제2 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 두 번째로 낮은 제2 40MHz 서브채널을 대표하는 공간 재사용 값이고,상기 제3 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 두 번째로 높은 제3 40MHz 서브채널을 대표하는 공간 재사용 값이고,상기 제4 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 가장 높은 제4 40MHz 서브채널을 대표하는 공간 재사용 값인방법.
- 제1항에 있어서,상기 공통 정보 필드는 제1 대역폭 필드를 포함하고, 상기 특별 사용자 정보 필드는 제2 대역폭 필드를 포함하고,상기 기설정된 주파수 대역의 대역폭은 상기 제1 및 제2 대역폭 필드를 기반으로 설정되는방법.
- 제1항에 있어서,상기 TB PPDU는 U-SIG(Universal-Signal) 필드를 포함하고,상기 U-SIG 필드는 제7 및 제8 공간 재사용 필드를 포함하고,상기 제7 공간 재사용 필드는 상기 제5 공간 재사용 필드를 복제하여 구성되고,상기 제8 공간 재사용 필드는 상기 제6 공간 재사용 필드를 복제하여 구성되는방법.
- 제9항에 있어서,상기 제7 및 제8 공간 재사용 필드의 값은 20MHz 서브채널 별로 정규화(normalization)된 값인방법.
- 무선랜 시스템에서, 수신 STA(station)는메모리;트랜시버; 및상기 메모리 및 상기 트랜시버와 동작 가능하게 결합된 프로세서를 포함하되, 상기 프로세서는:송신 STA으로부터 트리거 프레임을 수신하고; 및상기 송신 STA에게 기설정된 주파수 대역을 통해 TB PPDU(Trigger Based Physical Protocol Data Unit)를 송신하되,상기 트리거 프레임은 공통 정보 필드 및 특별 사용자 정보 필드를 포함하고,상기 공통 정보 필드는 제1 내지 제4 공간 재사용(Spatial Reuse) 필드를 포함하고,상기 특별 사용자 정보 필드는 제5 및 제6 공간 재사용 필드를 포함하고,상기 기설정된 주파수 대역이 20MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 40MHz 대역인 경우, 상기 제1 및 제3 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제2 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 80MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 160MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고, 및상기 기설정된 주파수 대역이 320MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 및 제6 공간 재사용 필드의 값 중 작은 값으로 설정되는수신 STA.
- 무선랜 시스템에서,송신 STA(station)이, 수신 STA에게 트리거 프레임을 송신하는 단계; 및상기 송신 STA이, 상기 수신 STA로부터 기설정된 주파수 대역을 통해 TB PPDU(Trigger Based Physical Protocol Data Unit)를 수신하는 단계를 포함하되,상기 트리거 프레임은 공통 정보 필드 및 특별 사용자 정보 필드를 포함하고,상기 공통 정보 필드는 제1 내지 제4 공간 재사용(Spatial Reuse) 필드를 포함하고,상기 특별 사용자 정보 필드는 제5 및 제6 공간 재사용 필드를 포함하고,상기 기설정된 주파수 대역이 20MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 40MHz 대역인 경우, 상기 제1 및 제3 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제2 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 80MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 160MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고, 및상기 기설정된 주파수 대역이 320MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 및 제6 공간 재사용 필드의 값 중 작은 값으로 설정되는방법.
- 제12항에 있어서,상기 기설정된 주파수 대역이 20MHz 대역인 경우,상기 제1 내지 제4 공간 재사용 필드의 값은 상기 20MHz 대역에 대한 공간 재사용 값인방법.
- 제12항에 있어서,상기 기설정된 주파수 대역이 40MHz 대역인 경우,상기 제1 및 제3 공간 재사용 필드의 값은 상기 40MHz 대역에서 주파수가 낮은 제1 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제2 및 제4 공간 재사용 필드의 값은 상기 40MHz 대역에서 주파수가 높은 제2 20MHz 서브채널에 대한 공간 재사용 값인방법.
- 제12항에 있어서,상기 기설정된 주파수 대역이 80MHz 대역인 경우,상기 제1 공간 재사용 필드의 값은 상기 80MHz 대역에서 가장 낮은 제1 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제2 공간 재사용 필드의 값은 상기 80MHz 대역에서 두 번째로 낮은 제2 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제3 공간 재사용 필드의 값은 상기 80MHz 대역에서 두 번째로 높은 제3 20MHz 서브채널에 대한 공간 재사용 값이고,상기 제4 공간 재사용 필드의 값은 상기 80MHz 대역에서 가장 높은 제4 20MHz 서브채널에 대한 공간 재사용 값인방법.
- 제12항에 있어서,상기 기설정된 주파수 대역이 160MHz 대역인 경우,상기 제1 공간 재사용 필드의 값은 상기 160MHz 대역에서 가장 낮은 제1 40MHz 서브채널에 대한 공간 재사용 값이고,상기 제2 공간 재사용 필드의 값은 상기 160MHz 대역에서 두 번째로 낮은 제2 40MHz 서브채널에 대한 공간 재사용 값이고,상기 제3 공간 재사용 필드의 값은 상기 160MHz 대역에서 두 번째로 높은 제3 40MHz 서브채널에 대한 공간 재사용 값이고,상기 제4 공간 재사용 필드의 값은 상기 160MHz 대역에서 가장 높은 제4 40MHz 서브채널에 대한 공간 재사용 값인방법.
- 제12항에 있어서,상기 기설정된 주파수 대역이 320MHz 대역인 경우,상기 제1 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 가장 낮은 제1 40MHz 서브채널을 대표하는 공간 재사용 값이고,상기 제2 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 두 번째로 낮은 제2 40MHz 서브채널을 대표하는 공간 재사용 값이고,상기 제3 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 두 번째로 높은 제3 40MHz 서브채널을 대표하는 공간 재사용 값이고,상기 제4 공간 재사용 필드의 값은 상기 320MHz 대역의 각 160MHz 채널 내 주파수가 가장 높은 제4 40MHz 서브채널을 대표하는 공간 재사용 값인방법.
- 무선랜 시스템에서, 송신 STA(station)는,메모리;트랜시버; 및상기 메모리 및 상기 트랜시버와 동작 가능하게 결합된 프로세서를 포함하되, 상기 프로세서는:수신 STA에게 트리거 프레임을 송신하고; 및상기 수신 STA로부터 기설정된 주파수 대역을 통해 TB PPDU(Trigger Based Physical Protocol Data Unit)를 수신하되,상기 트리거 프레임은 공통 정보 필드 및 특별 사용자 정보 필드를 포함하고,상기 공통 정보 필드는 제1 내지 제4 공간 재사용(Spatial Reuse) 필드를 포함하고,상기 특별 사용자 정보 필드는 제5 및 제6 공간 재사용 필드를 포함하고,상기 기설정된 주파수 대역이 20MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 40MHz 대역인 경우, 상기 제1 및 제3 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제2 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 80MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 160MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고, 및상기 기설정된 주파수 대역이 320MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 및 제6 공간 재사용 필드의 값 중 작은 값으로 설정되는송신 STA.
- 적어도 하나의 프로세서(processor)에 의해 실행됨을 기초로 하는 명령어(instruction)를 포함하는 적어도 하나의 컴퓨터로 읽을 수 있는 기록매체(computer readable medium)에 있어서,송신 STA(station)으로부터 트리거 프레임을 수신하는 단계; 및상기 송신 STA에게 기설정된 주파수 대역을 통해 TB PPDU(Trigger Based Physical Protocol Data Unit)를 송신하는 단계를 포함하되,상기 트리거 프레임은 공통 정보 필드 및 특별 사용자 정보 필드를 포함하고,상기 공통 정보 필드는 제1 내지 제4 공간 재사용(Spatial Reuse) 필드를 포함하고,상기 특별 사용자 정보 필드는 제5 및 제6 공간 재사용 필드를 포함하고,상기 기설정된 주파수 대역이 20MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 40MHz 대역인 경우, 상기 제1 및 제3 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제2 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 80MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 160MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고, 및상기 기설정된 주파수 대역이 320MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 및 제6 공간 재사용 필드의 값 중 작은 값으로 설정되는기록매체.
- 무선랜 시스템에서 장치에 있어서,메모리; 및상기 메모리와 동작 가능하게 결합된 프로세서를 포함하되, 상기 프로세서는:송신 STA(station)으로부터 트리거 프레임을 수신하고; 및상기 송신 STA에게 기설정된 주파수 대역을 통해 TB PPDU(Trigger Based Physical Protocol Data Unit)를 송신하되,상기 트리거 프레임은 공통 정보 필드 및 특별 사용자 정보 필드를 포함하고,상기 공통 정보 필드는 제1 내지 제4 공간 재사용(Spatial Reuse) 필드를 포함하고,상기 특별 사용자 정보 필드는 제5 및 제6 공간 재사용 필드를 포함하고,상기 기설정된 주파수 대역이 20MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 40MHz 대역인 경우, 상기 제1 및 제3 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제2 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 80MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고,상기 기설정된 주파수 대역이 160MHz 대역인 경우, 상기 제1 및 제2 공간 재사용 필드는 상기 제5 공간 재사용 필드의 값으로 설정되고, 상기 제3 및 제4 공간 재사용 필드는 상기 제6 공간 재사용 필드의 값으로 설정되고, 및상기 기설정된 주파수 대역이 320MHz 대역인 경우, 상기 제1 내지 제4 공간 재사용 필드는 상기 제5 및 제6 공간 재사용 필드의 값 중 작은 값으로 설정되는장치.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX2023008126A MX2023008126A (es) | 2021-01-11 | 2022-01-11 | Metodo y dispositivo para configurar campo de reutilizacion espacial en sistema lan inalambrico. |
| KR1020237018979A KR102711458B1 (ko) | 2021-01-11 | 2022-01-11 | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 |
| EP22736923.8A EP4262306B1 (en) | 2021-01-11 | 2022-01-11 | Method and device for configuring spatial reuse field in wireless lan system |
| KR1020247031733A KR20240146094A (ko) | 2021-01-11 | 2022-01-11 | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 |
| EP25181135.2A EP4590056A3 (en) | 2021-01-11 | 2022-01-11 | Method and device for configuring spatial reuse field in wireless lan system |
| US18/219,425 US11943625B2 (en) | 2021-01-11 | 2023-07-07 | Method and device for configuring spatial reuse field in wireless LAN system |
| US18/367,394 US11943626B2 (en) | 2021-01-11 | 2023-09-12 | Methods and apparatus of a receiving STA and a transmitting STA for communication of a trigger frame and TB PPDU |
| US18/425,705 US20240244439A1 (en) | 2021-01-11 | 2024-01-29 | Method and device for configuring spatial reuse field in wireless lan system |
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0003434 | 2021-01-11 | ||
| KR20210003434 | 2021-01-11 | ||
| KR10-2021-0006904 | 2021-01-18 | ||
| KR20210006904 | 2021-01-18 | ||
| KR20210007538 | 2021-01-19 | ||
| KR10-2021-0007538 | 2021-01-19 | ||
| KR10-2021-0011675 | 2021-01-27 | ||
| KR20210011675 | 2021-01-27 | ||
| KR10-2021-0032186 | 2021-03-11 | ||
| KR20210032186 | 2021-03-11 | ||
| KR20210034358 | 2021-03-17 | ||
| KR10-2021-0034358 | 2021-03-17 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/219,425 Continuation US11943625B2 (en) | 2021-01-11 | 2023-07-07 | Method and device for configuring spatial reuse field in wireless LAN system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022149946A1 true WO2022149946A1 (ko) | 2022-07-14 |
Family
ID=82357392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/000431 Ceased WO2022149946A1 (ko) | 2021-01-11 | 2022-01-11 | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 |
Country Status (5)
| Country | Link |
|---|---|
| US (3) | US11943625B2 (ko) |
| EP (2) | EP4262306B1 (ko) |
| KR (2) | KR20240146094A (ko) |
| MX (1) | MX2023008126A (ko) |
| WO (1) | WO2022149946A1 (ko) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210399864A1 (en) * | 2020-06-19 | 2021-12-23 | Lg Electronics Inc. | Configuration and transmission of aggregated data unit in wireless local area network |
| WO2024181734A1 (ko) * | 2023-03-02 | 2024-09-06 | 엘지전자 주식회사 | 무선랜 시스템에서 릴레이 동작에 대한 ack 정보 수행하는 방법 및 장치 |
| WO2025053507A1 (ko) * | 2023-09-06 | 2025-03-13 | 엘지전자 주식회사 | 무선랜 시스템에서 분산된 자원 유닛 톤 플랜 기반 송신 또는 수신 방법 및 장치 |
| WO2025170276A1 (ko) * | 2024-02-06 | 2025-08-14 | 엘지전자 주식회사 | 무선랜 시스템에서 분산된 자원 유닛 톤 플랜 기반 송신 또는 수신 방법 및 장치 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022186660A1 (ko) * | 2021-03-04 | 2022-09-09 | 엘지전자 주식회사 | 무선랜 시스템에서 tb a-ppdu를 트리거하는 트리거 프레임의 공간 재사용 필드를 구성하는 방법 및 장치 |
| US20210266872A1 (en) * | 2021-05-12 | 2021-08-26 | Intel Corporation | Method and apparatus used in wlan networks |
| CN114374995B (zh) * | 2021-12-14 | 2023-10-17 | 深圳市联平半导体有限公司 | 一种处理BSS Color冲突的方法、站点、无线接入点及系统 |
| CN114302496A (zh) * | 2021-12-17 | 2022-04-08 | 深圳市联平半导体有限公司 | 数据发送方法、装置、存储介质、处理器及ap终端 |
| US12150073B2 (en) * | 2022-02-16 | 2024-11-19 | Tp-Link Corporation Limited | Transmit power control method and apparatus, node device, and storage medium |
| US12206533B2 (en) * | 2022-07-13 | 2025-01-21 | Nxp Usa, Inc. | Non-long range preamble design for long range wireless packet and methods for processing the preamble |
| WO2026043198A1 (ko) * | 2024-08-21 | 2026-02-26 | 엘지전자 주식회사 | 무선랜 시스템에서 트리거 프레임을 송신 또는 수신하는 방법 및 장치 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190166590A1 (en) * | 2016-05-06 | 2019-05-30 | Qualcomm Incorporated | Trigger frame in wireless local area network |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5539009B2 (ja) | 2010-05-14 | 2014-07-02 | 矢崎総業株式会社 | 圧着端子の電線に対する接続構造 |
| EP4492905A1 (en) * | 2015-04-29 | 2025-01-15 | InterDigital Patent Holdings, Inc. | Methods and devices for sub-channelized transmission schemes in wlans |
| CN112491521B (zh) * | 2015-10-20 | 2022-08-19 | 华为技术有限公司 | 传输数据的方法和装置 |
| US10306667B2 (en) * | 2016-02-17 | 2019-05-28 | Lg Electronics Inc. | Method for transmitting and receiving uplink acknowledgement signal in wireless LAN system and apparatus therefor |
| KR101965430B1 (ko) * | 2017-07-17 | 2019-08-13 | (주)동희산업 | 플라스틱 연료탱크와 플라스틱 부품 결합용 열융착장치 및 이를 이용한 플라스틱 연료탱크와 플라스틱 부품의 결합방법 |
| US11109278B2 (en) * | 2017-10-20 | 2021-08-31 | Qualcomm Incorporated | Multiplexing clients of different generations in trigger-based transmissions |
| KR102726287B1 (ko) * | 2018-10-16 | 2024-11-06 | 삼성전자주식회사 | 무선랜 시스템에서 공간 재사용 제어 방법 및 장치 |
| CN115968045B (zh) * | 2020-05-28 | 2024-04-12 | 华为技术有限公司 | 通信方法及装置 |
| US11924812B2 (en) * | 2020-07-23 | 2024-03-05 | Qualcomm Incorporated | Enhanced trigger frame |
| CN118677583A (zh) * | 2020-11-12 | 2024-09-20 | 华为技术有限公司 | Ppdu中空间复用参数字段的确定方法及相关装置 |
| US12108282B2 (en) | 2020-12-09 | 2024-10-01 | Huawei Technologies Co., Ltd. | Defining source of bits in trigger frame for disregard bits and releasing redundant beamformed bit |
| CN118433896A (zh) * | 2020-12-15 | 2024-08-02 | 华为技术有限公司 | 空间复用参数指示和空间复用参数字段的确定方法及装置 |
| US11956175B1 (en) * | 2023-08-01 | 2024-04-09 | Roku, Inc. | Hub station with channel switching feature |
-
2022
- 2022-01-11 EP EP22736923.8A patent/EP4262306B1/en active Active
- 2022-01-11 KR KR1020247031733A patent/KR20240146094A/ko active Pending
- 2022-01-11 EP EP25181135.2A patent/EP4590056A3/en active Pending
- 2022-01-11 MX MX2023008126A patent/MX2023008126A/es unknown
- 2022-01-11 WO PCT/KR2022/000431 patent/WO2022149946A1/ko not_active Ceased
- 2022-01-11 KR KR1020237018979A patent/KR102711458B1/ko active Active
-
2023
- 2023-07-07 US US18/219,425 patent/US11943625B2/en active Active
- 2023-09-12 US US18/367,394 patent/US11943626B2/en active Active
-
2024
- 2024-01-29 US US18/425,705 patent/US20240244439A1/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190166590A1 (en) * | 2016-05-06 | 2019-05-30 | Qualcomm Incorporated | Trigger frame in wireless local area network |
Non-Patent Citations (5)
| Title |
|---|
| JINYOUNG CHUN (LG ELECTRONICS): "UL BW subfield design in Trigger frame", IEEE DRAFT; 11-20-1911-02-00BE-UL-BW-SUBFIELD-DESIGN-IN-TRIGGER-FRAME, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11 EHT; 802.11be, no. 2, 5 January 2021 (2021-01-05), Piscataway, NJ USA , pages 1 - 13, XP068175611 * |
| MING GAN (HUAWEI): "Backward compatible EHT trigger frame follow up", IEEE DRAFT; 11-20-1808-04-00BE-BACKWARD-COMPATIBLE-EHT-TRIGGER-FRAME-FOLLOW-UP, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11 EHT; 802.11be, no. 4, 6 January 2021 (2021-01-06), Piscataway, NJ USA , pages 1 - 22, XP068175625 * |
| See also references of EP4262306A4 * |
| STEVE SHELLHAMMER (QUALCOMM): "Backward Compatible Trigger Frame RU Allocation Table", IEEE DRAFT; 11-20-1703-06-00BE-BACKWARD-COMPATIBLE-TRIGGER-FRAME-RU-ALLOCATION-TABLE, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11 EHT; 802.11be, no. 6, 5 January 2021 (2021-01-05), Piscataway, NJ USA , pages 1 - 25, XP068175604 * |
| STEVE SHELLHAMMER (QUALCOMM): "Enhanced Trigger Frame for EHT Support", IEEE DRAFT; 11-20-1429-04-00BE-ENHANCED-TRIGGER-FRAME-FOR-EHT-SUPPORT, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11 EHT; 802.11be, no. 4, 6 January 2021 (2021-01-06), Piscataway, NJ USA , pages 1 - 35, XP068175634 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210399864A1 (en) * | 2020-06-19 | 2021-12-23 | Lg Electronics Inc. | Configuration and transmission of aggregated data unit in wireless local area network |
| WO2024181734A1 (ko) * | 2023-03-02 | 2024-09-06 | 엘지전자 주식회사 | 무선랜 시스템에서 릴레이 동작에 대한 ack 정보 수행하는 방법 및 장치 |
| WO2025053507A1 (ko) * | 2023-09-06 | 2025-03-13 | 엘지전자 주식회사 | 무선랜 시스템에서 분산된 자원 유닛 톤 플랜 기반 송신 또는 수신 방법 및 장치 |
| WO2025170276A1 (ko) * | 2024-02-06 | 2025-08-14 | 엘지전자 주식회사 | 무선랜 시스템에서 분산된 자원 유닛 톤 플랜 기반 송신 또는 수신 방법 및 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20230422043A1 (en) | 2023-12-28 |
| US11943626B2 (en) | 2024-03-26 |
| EP4262306B1 (en) | 2025-06-11 |
| EP4262306A1 (en) | 2023-10-18 |
| US11943625B2 (en) | 2024-03-26 |
| EP4262306C0 (en) | 2025-06-11 |
| EP4590056A2 (en) | 2025-07-23 |
| KR20230129158A (ko) | 2023-09-06 |
| EP4262306A4 (en) | 2024-05-22 |
| KR20240146094A (ko) | 2024-10-07 |
| MX2023008126A (es) | 2023-07-31 |
| EP4590056A3 (en) | 2025-10-01 |
| KR102711458B1 (ko) | 2024-09-30 |
| US20230413062A1 (en) | 2023-12-21 |
| US20240244439A1 (en) | 2024-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022149946A1 (ko) | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 | |
| WO2021141211A1 (ko) | 멀티 ap 시스템에서 c-ofdma 전송을 위한 채널 스위칭 | |
| WO2021172727A1 (ko) | 멀티 ap 시스템에서 공간 재사용을 위한 측정 | |
| WO2021112557A1 (ko) | 무선 통신 시스템에서 멀티 링크 통신을 수행하기 위한 기법 | |
| WO2020222597A1 (ko) | 무선랜 시스템에서 다중 링크를 통해 ul 전송을 수행하는 방법 및 장치 | |
| WO2022191527A1 (ko) | 무선랜 시스템에서 tb a-ppdu의 대역폭을 지시하기 위해 대역폭 필드를 구성하는 방법 및 장치 | |
| WO2020149717A1 (ko) | 무선랜 시스템에서 복수의 ap를 이용한 신호 송신 | |
| WO2021141467A1 (ko) | 무선 통신 시스템에서 멀티 링크 통신을 수행하기 위한 기법 | |
| WO2022158777A1 (ko) | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 | |
| WO2022158779A1 (ko) | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 | |
| WO2022186660A1 (ko) | 무선랜 시스템에서 tb a-ppdu를 트리거하는 트리거 프레임의 공간 재사용 필드를 구성하는 방법 및 장치 | |
| WO2020242106A1 (ko) | 무선랜 시스템에서 톤 플랜을 기반으로 eht ppdu를 수신하는 방법 및 장치 | |
| WO2020242105A1 (ko) | 무선랜 시스템에서 광대역에서 파일럿 톤을 설정하는 방법 및 장치 | |
| WO2021172732A1 (ko) | 멀티 ap 시스템에서 공간 재사용 | |
| WO2021210794A1 (ko) | 멀티 링크 채널 액세스 | |
| WO2021112556A1 (ko) | 무선 통신 시스템에서 멀티 링크 통신을 수행하기 위한 기법 | |
| WO2021206272A1 (ko) | 멀티 ap 환경에서 tdma 전송 | |
| WO2022059974A1 (ko) | 무선랜 시스템에서 공간 재사용 필드를 구성하는 방법 및 장치 | |
| WO2022139247A1 (ko) | 무선랜 시스템에서 a-ppdu를 수신하는 방법 및 장치 | |
| WO2022124722A1 (ko) | 무선랜 시스템에서 a-ppdu의 구조 및 채널 스위칭을 위한 지시자를 설정하는 방법 및 장치 | |
| WO2021177587A1 (ko) | 공간 재사용을 이용한 멀티 ap 전송에서 송신 전력 | |
| WO2022191528A1 (ko) | 무선랜 시스템에서 tb a-ppdu의 대역폭을 지시하기 위해 대역폭 필드 및 지시자 비트를 구성하는 방법 및 장치 | |
| WO2022158780A1 (ko) | 무선랜 시스템에서 320mhz 대역에서 송신되는 non-ht dup ppdu의 대역폭을 지시하는 방법 및 장치 | |
| WO2021112558A1 (ko) | 무선 통신 시스템에서 멀티 링크 통신을 수행하기 위한 기법 | |
| WO2022231151A1 (ko) | 무선랜 시스템에서 a-ppdu를 관리하거나 제어하는 non-ht dup ppdu의 대역폭을 지시하는 방법 및 장치 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22736923 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2023/008126 Country of ref document: MX |
|
| ENP | Entry into the national phase |
Ref document number: 2022736923 Country of ref document: EP Effective date: 20230712 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202317049795 Country of ref document: IN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWD | Wipo information: divisional of initial pct application |
Ref document number: 202518037326 Country of ref document: IN Ref document number: 202518037327 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202518037327 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202518037326 Country of ref document: IN |
|
| WWG | Wipo information: grant in national office |
Ref document number: 2022736923 Country of ref document: EP |









