[go: up one dir, main page]

WO2016190578A1 - Procédé de transmission d'une trame sans fil comprenant de multiples champs de signalisation et dispositif associé - Google Patents

Procédé de transmission d'une trame sans fil comprenant de multiples champs de signalisation et dispositif associé Download PDF

Info

Publication number
WO2016190578A1
WO2016190578A1 PCT/KR2016/004980 KR2016004980W WO2016190578A1 WO 2016190578 A1 WO2016190578 A1 WO 2016190578A1 KR 2016004980 W KR2016004980 W KR 2016004980W WO 2016190578 A1 WO2016190578 A1 WO 2016190578A1
Authority
WO
WIPO (PCT)
Prior art keywords
field
radio frame
stas
information
sig
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
Application number
PCT/KR2016/004980
Other languages
English (en)
Korean (ko)
Inventor
임동국
이욱봉
최진수
조한규
박은성
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of WO2016190578A1 publication Critical patent/WO2016190578A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • This document relates to a WLAN system, and more particularly, to a method and apparatus for constructing and efficiently transmitting a radio frame including various signaling fields in a WLAN system.
  • the proposed frame transmission method may be applied to various wireless communications, but the following describes a wireless local area network (WLAN) system as an example to which the present invention may be applied.
  • WLAN wireless local area network
  • IEEE 802.11a and b are described in 2.4. Using unlicensed band at GHz or 5 GHz, IEEE 802.11b provides a transmission rate of 11 Mbps and IEEE 802.11a provides a transmission rate of 54 Mbps.
  • IEEE 802.11g applies orthogonal frequency-division multiplexing (OFDM) at 2.4 GHz to provide a transmission rate of 54 Mbps.
  • IEEE 802.11n applies multiple input multiple output OFDM (MIMO-OFDM) to provide a transmission rate of 300 Mbps for four spatial streams. IEEE 802.11n supports channel bandwidths up to 40 MHz, in this case providing a transmission rate of 600 Mbps.
  • the WLAN standard uses a maximum of 160MHz bandwidth, supports eight spatial streams, and supports IEEE 802.11ax standard through an IEEE 802.11ac standard supporting a speed of up to 1Gbit / s.
  • the present invention proposes an efficient radio frame structure in the WLAN system as described above, and provides a method for efficiently transmitting and receiving data using the same.
  • the present invention is not limited to the above-described technical problem and other technical problems can be inferred from the embodiments of the present invention.
  • a method of transmitting an radio frame to one or more stations includes a signaling field and a data field in the AP Generates a radio frame, but when the radio frame is a radio frame for transmitting data to a plurality of STAs, the signaling field includes a first signaling field (SIG) including first common control information for the plurality of STAs. A field) and a second signaling field (SIG B field) including individual control information in each of the plurality of STAs, wherein the second signaling field includes common common information including second common control information for the plurality of STAs. Field, and a separate field subsequent to the common field and including individual control information in each of the plurality of STAs; Transmitting a line frame to the at least one STA, it proposes a radio frame transmission method.
  • SIG first signaling field
  • SIG B field second signaling field
  • the second signaling field of the radio frame may not include the individual field. Unlike this, the radio frame transmits data to one STA. In the case of a radio frame, the radio frame may not include the second signaling field.
  • the first signaling field may include interpretation information about the second signaling field.
  • the common field of the second signaling field may include information about the number of the plurality of STAs and allocation resource information.
  • the individual field of the second signaling field may include identifier information for each of the plurality of STAs, information on the number of spatial streams, information on whether to use transmission beamforming, and coding information.
  • the second signaling field may be configured in 20 MHz band units.
  • the signaling field of a specific 20 MHz band may include resource allocation information for a 20 MHz band other than the specific 20 MHz band.
  • the resource allocation information includes a plurality of resource structures including a resource structure divided into 26 tones for each 20 MHz band, a resource structure divided into 52 tones, a resource structure divided into 106 tones, and a resource structure divided into 242 tones.
  • a resource may be allocated based on one of the resource structures.
  • the radio frame may have a form of a physical protocol data unit (PPDU).
  • PPDU physical protocol data unit
  • an access point (AP) apparatus for transmitting a radio frame to one or more stations (STA) in a WLAN system, comprising: a processor configured to generate a radio frame including a signaling field and a data field; And a transceiver coupled to the processor and configured to transmit the radio frame to the at least one STA, wherein the processor is configured to: when the radio frame is a radio frame for transmitting data to a plurality of STAs, the signaling field Includes a first signaling field (SIG A field) including first common control information for the plurality of STAs and a second signaling field (SIG B field) including individual control information in each of the plurality of STAs,
  • the AP device is configured to include the second signaling field to include a common field including second common control information for the plurality of STAs and an individual field including individual control information in each of the plurality of STAs.
  • the processor may be configured not to include the individual field in a second signaling field of the radio frame.
  • the processor may configure the radio frame not to include the second signaling field.
  • the processor may configure the second signaling field in units of 20 MHz band.
  • the processor may be configured to include resource allocation information for a 20 MHz band other than the specific 20 MHz band in the signaling field of a specific 20 MHz band.
  • the radio frame when the radio frame is a multi-user radio frame, it is possible to improve the radio communication performance by allowing the receiver to efficiently acquire control information.
  • the overhead may be reduced by configuring differently depending on whether the radio frame is a multi-user radio frame or a single user radio frame.
  • resource allocation can be made flexible in each band, thereby increasing resource efficiency.
  • FIG. 1 is a diagram illustrating an example of a configuration of a WLAN system.
  • FIG. 2 is a diagram illustrating another example of a configuration of a WLAN system.
  • FIG. 3 is a diagram illustrating an exemplary structure of a WLAN system.
  • FIG. 4 is a view for explaining a general link setup process.
  • FIG. 5 is a diagram for describing an active scanning method and a passive scanning method.
  • 6 to 8 are views for explaining the operation of the station receiving the TIM in detail.
  • 9 to 13 are diagrams for explaining an example of the frame structure used in the IEEE 802.11 system.
  • HE high efficiency
  • FIG. 19 is a diagram for explaining a HE-SIG B configuration in a multi-user PPDU according to one embodiment of the present invention.
  • 20 is a diagram illustrating an example of a configuration of an HE-SIG B when transmitting a single user PPDU according to an embodiment of the present invention.
  • FIG. 21 illustrates a chunk size of an allocation that an STA can use in a 20 MHz channel according to an embodiment of the present invention.
  • 22 is a block diagram illustrating an exemplary configuration of an AP device (or base station device) and a station device (or terminal device) according to an embodiment of the present invention.
  • FIG. 23 illustrates an exemplary structure of a processor of an AP device or a station device according to an embodiment of the present invention.
  • each component or feature may be considered to be optional unless otherwise stated.
  • Each component or feature may be embodied in a form that is not combined with other components or features.
  • some components and / or features may be combined to form an embodiment of the present invention.
  • the order of the operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment.
  • Embodiments of the present invention may be supported by standard documents disclosed in at least one of the wireless access systems IEEE 802 system, 3GPP system, 3GPP LTE and LTE-A (LTE-Advanced) system and 3GPP2 system. That is, steps or parts which are not described to clearly reveal the technical spirit of the present invention among the embodiments of the present invention may be supported by the above documents. In addition, all terms disclosed in the present document can be described by the above standard document.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
  • TDMA may be implemented with wireless technologies such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE).
  • GSM Global System for Mobile communications
  • GPRS General Packet Radio Service
  • EDGE Enhanced Data Rates for GSM Evolution
  • OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA).
  • first and / or second may be used herein to describe various components, but the components should not be limited by the terms. The terms are only for the purpose of distinguishing one component from another component, for example, without departing from the scope of rights in accordance with the concepts herein, the first component may be called a second component, and similarly The second component may also be referred to as a first component.
  • unit refers to a unit that processes at least one function or operation, which may be implemented in a combination of hardware and / or software.
  • FIG. 1 is a diagram illustrating an example of a configuration of a WLAN system.
  • the WLAN system includes one or more basic service sets (BSSs).
  • BSS is a set of stations (STAs) that can successfully synchronize and communicate with each other.
  • a station is a logical entity that includes medium access control (MAC) and a physical layer interface to a wireless medium.
  • the station is an access point (AP) and a non-AP station. Include.
  • the portable terminal operated by the user among the stations is a non-AP station, which is simply referred to as a non-AP station.
  • a non-AP station is a terminal, a wireless transmit / receive unit (WTRU), a user equipment (UE), a mobile station (MS), a mobile terminal, or a mobile subscriber. It may also be called another name such as a mobile subscriber unit.
  • the AP is an entity that provides an associated station with access to a distribution system (DS) through a wireless medium.
  • the AP may be called a centralized controller, a base station (BS), a Node-B, a base transceiver system (BTS), or a site controller.
  • BS base station
  • BTS base transceiver system
  • BSS can be divided into infrastructure BSS and Independent BSS (IBSS).
  • IBSS Independent BSS
  • the BBS shown in FIG. 1 is an IBSS.
  • the IBSS means a BSS that does not include an AP. Since the IBSS does not include an AP, access to the DS is not allowed, thereby forming a self-contained network.
  • FIG. 2 is a diagram illustrating another example of a configuration of a WLAN system.
  • the BSS shown in FIG. 2 is an infrastructure BSS.
  • the infrastructure BSS includes one or more stations and an AP.
  • communication between non-AP stations is performed via an AP, but direct communication between non-AP stations is also possible when a direct link is established between non-AP stations.
  • a plurality of infrastructure BSSs may be interconnected through a DS.
  • a plurality of BSSs connected through a DS is called an extended service set (ESS).
  • Stations included in an ESS may communicate with each other, and a non-AP station may move from one BSS to another BSS while communicating seamlessly within the same ESS.
  • the DS is a mechanism for connecting a plurality of APs.
  • the DS is not necessarily a network, and there is no limitation on the form if it can provide a predetermined distribution service.
  • the DS may be a wireless network such as a mesh network or a physical structure that connects APs to each other.
  • FIG. 3 is a diagram illustrating an exemplary structure of a WLAN system.
  • an example of an infrastructure BSS including a DS is shown.
  • BSS1 and BSS2 constitute an ESS.
  • a station is a device that operates according to MAC / PHY regulations of IEEE 802.11.
  • the station includes an AP station and a non-AP station.
  • Non-AP stations are typically user-managed devices, such as laptop computers and mobile phones.
  • station 1, station 3, and station 4 correspond to non-AP stations
  • station 2 and station 5 correspond to AP stations.
  • a non-AP station includes a terminal, a wireless transmit / receive unit (WTRU), a user equipment (UE), a mobile station (MS), and a mobile terminal. May be referred to as a Mobile Subscriber Station (MSS).
  • the AP may include a base station (BS), a node-B, an evolved Node-B (eNB), and a base transceiver system (BTS) in other wireless communication fields.
  • BS base station
  • eNB evolved Node-B
  • BTS base transceiver system
  • FIG. 4 is a diagram illustrating a general link setup process
  • FIG. 5 is a diagram illustrating an active scanning method and a passive scanning method.
  • a station In order for a station to set up a link and transmit and receive data over a network, it first discovers the network, performs authentication, establishes an association, and authenticates for security. It must go through the back.
  • the link setup process may also be referred to as session initiation process and session setup process.
  • the process of discovery, authentication, association and security establishment of the link setup process may be collectively referred to as association process.
  • the station may perform a network discovery operation.
  • the network discovery operation may include a scanning operation of the station. In other words, in order for a station to access a network, it must find a network that can participate. The station must identify a compatible network before joining the wireless network. Network identification in a particular area is called scanning.
  • a station performing scanning transmits a probe request frame and waits for a response to discover which AP exists in the vicinity while moving channels.
  • the responder transmits a probe response frame in response to the probe request frame to the station transmitting the probe request frame.
  • the responder may be the station that last transmitted the beacon frame in the BSS of the channel being scanned.
  • the AP transmits a beacon frame, so the AP becomes a responder.
  • the responder is not constant because the stations in the IBSS rotate and transmit the beacon frame.
  • a station that transmits a probe request frame on channel 1 and receives a probe response frame on channel 1 stores the BSS-related information included in the received probe response frame and stores the next channel (for example, number 2).
  • Channel to perform scanning (i.e., probe request / response transmission and reception on channel 2) in the same manner.
  • the scanning operation may be performed by a passive scanning method.
  • a station performing scanning waits for a beacon frame while moving channels.
  • Beacon frame is one of the management frame (management frame) in IEEE 802.11, it is transmitted periodically to inform the existence of the wireless network, and to perform the scanning station to find the wireless network and join the wireless network.
  • the AP periodically transmits a beacon frame
  • stations in the IBSS rotate to transmit a beacon frame.
  • the scanning station receives the beacon frame, the scanning station stores the information about the BSS included in the beacon frame and records beacon frame information in each channel while moving to another channel.
  • the station receiving the beacon frame may store the 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.
  • active scanning has the advantage of less delay and power consumption than passive scanning.
  • step S420 After the station has found the network, the authentication process may be performed in step S420.
  • This authentication process may be referred to as a first authentication process in order to clearly distinguish from the security setup operation of step S440 described later.
  • the authentication process includes a process in which the station transmits an authentication request frame to the AP, and in response thereto, the AP transmits an authentication response frame to the station.
  • An authentication frame used for 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, and a finite cyclic group. Group) and the like. This corresponds to some examples of information that may be included in the authentication request / response frame, and may be replaced with other information or further include additional information.
  • the station may send an authentication request frame to the AP.
  • the AP may determine whether to allow authentication for the corresponding station based on the information included in the received authentication request frame.
  • the AP may provide the station with the result of the authentication process through an authentication response frame.
  • the association process includes the station transmitting an association request frame to the AP, and in response, the AP transmitting an association response frame to the station.
  • the association request frame may include information related to various capabilities, beacon listening interval, service set identifier (SSID), supported rates, supported channels, RSN, mobility domain. Information about supported operating classes, TIM Broadcast Indication Map Broadcast request, interworking service capability, and the like.
  • the association response frame may include information related to various capabilities, status codes, association IDs (AIDs), support rates, Enhanced Distributed Channel Access (EDCA) parameter sets, Received Channel Power Indicators (RCPI), Received Signal to Noise Information) such as an indicator, a mobility domain, a timeout interval (association comeback time), an overlapping BSS scan parameter, a TIM broadcast response, and a QoS map.
  • AIDs association IDs
  • EDCA Enhanced Distributed Channel Access
  • RCPI Received Channel Power Indicators
  • Received Signal to Noise Information such as an indicator, a mobility domain, a timeout interval (association comeback time), an overlapping BSS scan parameter, a TIM broadcast response, and a QoS map.
  • a security setup procedure may be performed at step S540.
  • the security setup process of step S440 may be referred to as an authentication process through a Robust Security Network Association (RSNA) request / response.
  • the authentication process of step S520 is called a first authentication process, and the security setup process of step S540 is performed. It may also be referred to simply as the authentication process.
  • RSNA Robust Security Network Association
  • the security setup process of step S440 may include, for example, performing a private key setup through 4-way handshaking through an Extensible Authentication Protocol over LAN (EAPOL) frame. .
  • the security setup process may be performed according to a security scheme not defined in the IEEE 802.11 standard.
  • 6 to 8 are views for explaining the operation of the station receiving the TIM in detail.
  • a station transitions from a sleep state to an awake state to receive a beacon frame including a traffic indication map (TIM) from an AP, interprets the received TIM element, and buffers traffic to be transmitted to itself. It can be seen that.
  • the station may transmit a PS-Poll frame to request an AP to transmit a data frame after contending with other stations for medium access for PS-Poll frame transmission.
  • the AP receiving the PS-Poll frame transmitted by the station may transmit the frame to the station.
  • the station may receive a data frame and send an acknowledgment (ACK) frame thereto to the AP. The station may then go back to sleep.
  • ACK acknowledgment
  • the AP operates according to an immediate response method of transmitting a data frame after a predetermined time (for example, short inter-frame space) after receiving a PS-Poll frame from a station. Can be.
  • a predetermined time for example, short inter-frame space
  • the AP may operate according to the delayed response (deferred response) method, which will be described with reference to FIG.
  • an operation in which the station transitions from the sleep state to the awake state, receives a TIM from the AP, and transmits a PS-Poll frame to the AP through contention is the same as the example of FIG. 6.
  • the AP may transmit an ACK frame to the station instead of transmitting the data frame.
  • the AP may transmit the data frame to the station after performing contention.
  • the station may send an ACK frame indicating that the data frame was successfully received to the AP and go to sleep.
  • the AP transmits a DTIM.
  • Stations may transition from a sleep state to an awake state to receive a beacon frame containing a DTIM element from the AP.
  • the stations may know that a multicast / broadcast frame will be transmitted through the received DTIM.
  • the AP may transmit data (ie, multicast / broadcast frame) immediately after the beacon frame including the DTIM without transmitting and receiving the PS-Poll frame.
  • the stations may receive data while continuing to awake after receiving the beacon frame including the DTIM, and may go back to sleep after the data reception is complete.
  • 9 to 13 are diagrams for explaining an example of the frame structure used in the IEEE 802.11 system.
  • the station STA may receive a Physical Layer Convergence Protocol (PLCP) Packet Data Unit (PPDU).
  • PLCP Physical Layer Convergence Protocol
  • PPDU frame format may include a Short Training Field (STF), a Long Training Field (LTF), a SIG (SIGNAL) field, and a Data field.
  • STF Short Training Field
  • LTF Long Training Field
  • SIGNAL SIG
  • Data field a Data field
  • the PPDU frame format may be set based on the type of the PPDU frame format.
  • the non-HT (High Throughput) PPDU frame format may include only a legacy-STF (L-STF), a legacy-LTF (L-LTF), a SIG field, and a data field.
  • L-STF legacy-STF
  • L-LTF legacy-LTF
  • SIG field SIG field
  • data field data field
  • the type of the PPDU frame format may be set to any one of the HT-mixed format PPDU and the HT-greenfield format PPDU.
  • the above-described PPDU format may further include an additional (or other type) STF, LTF, and SIG fields between the SIG field and the data field.
  • a VHT (Very High Throughput) PPDU format may be set.
  • an additional (or other type) STF, LTF, SIG field may be included between the SIG field and the data field in the VHT PPDU format.
  • at least one or more of a VHT-SIG-A field, a VHT-STF field, VHT-LTF, and VHT SIG-B field may be included between the L-SIG field and the data field.
  • the STF may be a signal for signal detection, automatic gain control (AGC), diversity selection, precise time synchronization, or the like.
  • the LTF may be a signal for channel estimation, frequency error estimation, or the like.
  • the STF and the LTF may be referred to as a PLCP preamble, and the PLCP preamble may be referred to as a signal for synchronization and channel estimation of the OFDM physical layer.
  • the SIG field may include a RATE field and a LENGTH field.
  • the RATE field may include information about modulation and coding rate of data.
  • the LENGTH field may include information about the length of data.
  • the SIG field may include a parity bit, a SIG TAIL bit, and the like.
  • the data field may include a SERVICE field, a PLC Service Data Unit (PSDU), a PPDU TAIL bit, and may also include a padding bit if necessary.
  • PSDU PLC Service Data Unit
  • PPDU TAIL bit PLC Service Data Unit
  • some bits of the SERVICE field may be used for synchronization of the descrambler at the receiving end, and some bits may be configured as reserved bits.
  • the PSDU corresponds to a MAC PDU (Protocol Data Unit) defined in the MAC layer and may include data generated / used in an upper layer.
  • the PPDU TAIL bit can be used to return the encoder to zero.
  • the padding bit may be used to adjust the length of the data field in a predetermined unit.
  • the VHT PPDU format may include additional (or other types of) STF, LTF, and SIG fields.
  • L-STF, L-LTF, and L-SIG in the VHT PPDU may be a portion for the Non-VHT of the VHT PPDU.
  • VHT-SIG-A, VHT-STF, VHT-LTF, and VHT-SIG-B in the VHT PPDU may be a part for the VHT. That is, in the VHT PPDU, a field for the Non-VHT and a region for the VHT field may be defined, respectively.
  • the VHT-SIG-A may include information for interpreting the VHT PPDU.
  • VHT-SIG-A may be configured of VHT SIG-A1 (FIG. 13A) and VHT SIG-A2 (FIG. 13B).
  • the VHT SIG-A1 and the VHT SIG-A2 may be configured with 24 data bits, respectively, and the VHT SIG-A1 may be transmitted before the VHT SIG-A2.
  • the VHT SIG-A1 may include a BW, STBC, Group ID, NSTS / Partial AID, TXOP_PS_NOT_ALLOWED field, and Reserved field.
  • VHT SIG-A2 also includes Short GI, Short GI NSYM Disambiguation, SU / MU [0] Coding, LDPC Extra OFDM Symbol, SU VHT-MCS / MU [1-3] Coding, Beamformed, CRC, Tail and Reserved fields. It may include. Through this, it is possible to check the information on the VHT PPDU.
  • the station may receive a PPDU based on any one of the above-described PPDU formats.
  • the PSDU of the data portion of the PPDU frame format may include a MAC PDU.
  • the MAC PDU is defined according to various MAC frame formats, and the basic MAC frame may be composed of a MAC header, a frame body, and a frame check sequence (FCS).
  • the MAC header may include a frame control field, a duration / ID field, an address field, a sequence control, a QoS control, and a HT control subfield.
  • the frame control field of the MAC header may include control information required for frame transmission / reception.
  • the interval / ID field may be set to a time for transmitting a corresponding frame.
  • the address field may include identification information about the sender and the receiver, which will be described later.
  • the Sequence Control, QoS Control, and HT Control fields may refer to the IEEE 802.11 standard document.
  • the HT Control field may have two forms as an HT variant and a VHT variant.
  • the information included in the HT Control field may vary according to each type. 15 and 16, the VHT subfield of the HT Control may be a field indicating whether the HT Control field is a HT variant or a VHT variant.
  • the VHT subfield has a value of "0" it may be in the form of HT variant
  • the VHT subfield has a value of "1”
  • the HT Control field is a HT variant, Link Adaptation Control, Calibration Position, Calibration Sequence, CSI / Steering, HT NDP Announcement, AC constraint, RDG / More PPDU, Reserved field, etc. It may include.
  • the Link Adaptation Control field may include a TRQ, MAI, MFSI, and MFB / ASELC field. For more details, refer to the IEEE802.11 standard document.
  • the HT Control field is a VHT variant type, MRQ, MSI, MFSI / GID-LM, MFB GID-H, Coding Type, FB Tx Type, FB Tx Type, Unsolicited MFB, AC It can include constraints, RDG / More PPDUs, and Reserved fields.
  • the MFB field may include a VHT N_STS, MCS, BW, SNR field, and the like.
  • the MAC frame may be configured in the form of a short MAC frame in order to prevent unnecessary waste of information by reducing unnecessary information.
  • the MAC header of a short frame may always include a frame control field, an A1 field, and an A2 field.
  • the Sequence Control field, the A3 field, and the A4 field may be selectively included. In this way, unnecessary information may be omitted from the MAC frame to prevent waste of radio resources.
  • each subfield of the frame control field may refer to an IEEE 802.11 standard document.
  • the Type (Field) field of the frame control field of the MAC header is composed of 3 bits, the value 0 to 3 includes the configuration for each address information, 4-7 may be reserved.
  • new address information may be indicated through a reserved value, which will be described later.
  • From DS field of the control frame field of the MAC header may be configured with 1 bit.
  • the More Fragment, Power Management, More Data, Protected Frame, End of Service Period, Relayed Frame and Ack Policy fields may be configured as 1 bit.
  • the Ack Policy field may be configured with 1 bit as ACK / NACK information.
  • a VHT AP may support a non-AP VHT station operating in a TXOP (Transmit Opportunity) power save mode in one BSS.
  • the non-AP VHT station may be operating in the TXOP power save mode as an active state.
  • the AP VHT station may be configured to switch the non-AP VHT station to the doze state during the TXOP.
  • the AP VHT station may indicate that the TXVECTOR parameter TXOP_PS_NOT_ALLOWED is set to a value of 0 and that the AP VHT station is switched to an inactive state by transmitting a VHT PPDU.
  • parameters in the TXVECTOR transmitted together with the VHT PPDU by the AP VHT station may be changed from 1 to 0 during TXOP. Through this, power saving can be performed for the remaining TXOP.
  • TXOP_PS_NOT_ALLOWED is set to 1 and power saving is not performed, the parameters in the TXVECTOR may be maintained without changing.
  • the non-AP VHT station when the non-AP VHT station is switched to inactive during TXOP in the TXOP power save mode, the following condition may be satisfied.
  • the station determines that the RXVECTOR parameter PARTIAL_AID matches the station's partial AID, but the recipient address in the MAC header does not match the station's MAC address.
  • the station is indicated as a member of the group by the RXVECTOR parameter GROUP_ID, but the NUM_STS parameter of the RXVECTOR parameter is set to 0.
  • the Ack Policy subfield is set to No Ack, or sends an ACK with the Ack Policy subfield set to No Ack.
  • the AP VHT station may include a Duration / ID value and a NAV-SET Sequence (e.g., RTS / CTS) set to the remaining TXOP interval.
  • the AP VHT station may not transmit a frame for the non-AP VHT station which is switched to the inactive state based on the above conditions for the remaining TXOP.
  • an AP VHT station transmits a VHT PPDU together with the TXVECTOR parameter TXOP_PS_NOT_ALLOWED in the same TXOP with the TXVECTOR parameter set to 0 and the station does not want to change from active to inactive, the AP VHT station sends a VHT SU PPDU. May not transmit.
  • the AP VHT station may not transmit a frame to the VHT station which is switched to an inactive state before the NAV set when the TXOP starts.
  • the AP VHT station when the AP VHT station does not receive an ACK after transmitting a frame including at least one of MSDU, A-MSDU, and MMPDU while the More Data field is set to 0, the AP VHT station may be retransmitted at least once in the same TXOP. .
  • the frame when ACK for retransmission is not received in the last frame of the same TXOP, the frame may be retransmitted until the next TXOP.
  • the AP VHT station may receive a BlockAck frame from the VHT station operating in the TXOP power save mode.
  • the BlockAck frame may be a response to the A-MPDU including the MPDU in which the More Data field is set to zero.
  • the AP VHT station since the AP VHT station is in an inactive state, it may not receive a response of the subsequence of the re-transmitted MPDU during the same TXOP.
  • the VHT station operating in the TXOP power save mode and switched to the inactive state may cause the NAV timer to operate during the inactive state. At this time, for example, when the timer is completed, the VHT station may be switched to an awake state.
  • the station may compete for media access when the NAV timer expires.
  • the frame structure for IEEE802.11ax has not been determined yet, but is expected as follows.
  • HE high efficiency
  • 11ax maintains the existing 1x symbol structure (3.2us) until the HE-SIG (SIG-A, SIG-B) as shown in the frame structure shown in FIG. 18, and the HE-preamble and Data parts have a 4x symbol (12.8us) structure.
  • L-Part can follow the configuration of L-STF, L-LTF, L-SIG as it is maintained in existing WiFi system.
  • the L-SIG preferably transmits packet length information.
  • the HE-Part is a newly constructed part for the 11ax standard (High Efficiency).
  • HE-SIG (HE-SIGA and HE-SIGB) may exist between the L-part and the HE-STF, and may inform common control information and user specific information. Specifically, it may be configured of HE-SIG A for delivering common control information and HE-SIG B for delivering user specific information.
  • HE-SIGB including user specific information can transmit different information for each 20Mhz channel, but the specific transmission method and structure have not yet been determined. Therefore, the present invention proposes an efficient transmission method of HE-SIG-B including user specific information on the STA.
  • FIG. 19 is a diagram for explaining a HE-SIG B configuration in a multi-user PPDU according to one embodiment of the present invention.
  • the HE-SIG B since the HE-SIG B is a field for transmitting user-specific control information, the HE-SIG B may have meaning in a multi-user PPDU.
  • HE-SIG-B independently transmitted per 20MHz is used for non-intended information to increase efficiency and reduce overhead for HE-SIG-B.
  • intended information ie, user specific information
  • non-user specific information is represented by “non-intended” and “user specific information” is represented by “intended”.
  • common information of STAs is transmitted through HE-SIG-B Non intended (that is, HE-SIG-B non-user specific), and all STAs for the entire bandwidth in the case of transmitting a signal over a wide bandwidth. It can be configured as a 20MHz channel including the common information of. In the case of broadband transmission, it can be repeatedly transmitted in a 20MHz channel like the transmission of HE-SIG-A.
  • the HE-SIG-B intended (ie, user specific) information includes specific information on the STA using the corresponding channel for each 20MHz channel and may be configured independently and transmitted in symbol units of the 20MHz channel.
  • the number of STAs transmitting and receiving a signal in the BSS and the operation mode (for example, OFDMA, SU / MU-MIMO) of the HE-SIG-B are determined.
  • the structure and content may vary.
  • the content of the HE-SIG-B for one STA may be configured as follows.
  • Table 1 below the field of HE-SIG-B for SU for configuring one symbol of HE-SIG-B is just one example, and its configuration may be different.
  • the HE-SIG-B information may be mapped to one symbol at 20 MHz, and may be transmitted using only one symbol. Therefore, in case of SU, HE-SIG-B can transmit using only HE-SIG-B non-intended without dividing HE-SIG-B into two in FIG. 19.
  • 20 is a diagram illustrating an example of a configuration of an HE-SIG B when transmitting a single user PPDU according to an embodiment of the present invention.
  • FIG. 20 illustrates an example in which the HE-SIG B does not have a user specific field and includes only a common field when the radio frame to be transmitted is a single user PPDU. Meanwhile, as described above, in the case of a single user PPDU, it is also possible to transmit only HE-SIG A without transmitting HE-SIG B itself.
  • two HE-SIG-Bs are configured as shown in FIG. 19, and content for each part is configured as shown in the following table. Can be.
  • Table 2 below shows an example of HE-SIG B non-intended field information
  • Table 3 shows an example of HE-SIG B intended field information.
  • the HE-SIG-B for supporting OFDMA may be composed of two parts (non-user specific and user specific), in which case the HE-SIG-B is adjusted by adjusting fields and field bits of the HE-SIG-B.
  • User non-specific information and user specific information of B may be composed of one symbol.
  • the HE-SIG-B for four STAs in a 20 MHz channel is assumed to use MCS0, the HE-SIG-B Non-intended 1 symbol and the HE-SIG-B intended 4 symbol may be configured. have.
  • the HE-SIG B may be configured as shown in Tables 4 and 5 below.
  • Tables 4 and 5 below show examples of non-intended and intended fields when MU-MIMO is applied.
  • the configuration and contents of the HE-SIG-B may vary according to SU / MU and MU-MIMO. Therefore, in order to indicate configuration information of the HE-SIG-B to the STA, information carried in the HE-SIG-A and the HE-SIG-B may be used in 11ax as follows.
  • Step 1 The STA receives the HE-SIG-A by transmitting the OFDMA field to the HE-SIG-A through which the common information is transmitted to determine whether the HE-SIG-B is composed of one part or two parts. have. For example, if the OFDMA field of HE-SIG-A is 0, HE-SIG-B is configured only with HE-SIG-B Non intended and if the OFDMA field is 1, HE-SIG-B is HE-SIG You can see that it consists of -B Non intended and HE-SIG-B intended.
  • Step 2 The STA determines whether HE-SIG-B is configured for single user or multi-user with HE-SIG-A. It is included in the intended purpose of HE-SIG-B. MU-MIMO using SU / MU field It can be determined whether or not to support.
  • Step 3 The field used to determine the configuration of the HE-SIG-B and whether to support MU-MIMO is one example and may be determined step by step using a field having a different name.
  • the HE-SIG-A may provide an indication of the PPDU format.
  • the PPDU format includes 2 bits of information and may indicate SU-PPDU, MU-MIMO PPDU, and OFDMA-PPDU.
  • the length of the HE-SIG-B may be different for each 20 MHz. Therefore, in one embodiment of the present invention, in order to match the length of the HE-SIG-B per 20 MHz, the HE-SIG-B can be transmitted using another 20 MHz channel or an adjacent 20 MHz channel in addition to the 20 MHz channel allocated with the resource. Suggest to do. In this case, the following method may be used to inform that the allocation is for a channel other than the corresponding channel.
  • FIG. 21 illustrates a chunk size of an allocation that an STA can use in a 20 MHz channel according to an embodiment of the present invention.
  • the information on the resource allocation structure as described above may be transmitted through the common field of the HE-SIG B.
  • the 242 chunk is used only for single user transmission in the 20 MHz channel, it is preferable not to use the OFDM when using the OFDMA. Therefore, when transmitting a signal using the OFDMA in the structure, it can indicate that the allocation to other channels by using information indicating 242 chuck of the resource allocation information.
  • the adjacent channel indication 1/2 bit may be added to the HE-SIG-B intended to indicate that the allocation is for a channel other than the channel. For example, in the case of transmitting 1 bit, it may be determined whether the allocation information is for a corresponding channel or for an adjacent channel. In this case, since the indication about the allocated channel is not included, when using 1 bit, the information can be used by fixing to the next or previous channel of the channel through which the corresponding information is transmitted. In contrast, in case of using 2 bits, it is possible to indicate which channel the allocation information is for. Thus, STA allocation information can be transmitted through HE-SIG-B of another channel more flexibly than 1 bit. This has the disadvantage of increasing the signaling overhead due to the transmission.
  • 22 is a block diagram illustrating an exemplary configuration of an AP device (or base station device) and a station device (or terminal device) according to an embodiment of the present invention.
  • the AP 100 may include a processor 110, a memory 120, and a transceiver 130.
  • the station 150 may include a processor 160, a memory 170, and a transceiver 180.
  • the transceivers 130 and 180 may transmit / receive radio signals and may implement, for example, a physical layer in accordance with the IEEE 802 system.
  • the processors 110 and 160 may be connected to the transceivers 130 and 180 to implement a physical layer and / or a MAC layer according to the IEEE 802 system.
  • Processors 110 and 160 may be configured to perform operations in accordance with one or more combinations of the various embodiments of the invention described above.
  • the modules for implementing the operations of the AP and the station according to various embodiments of the present invention described above may be stored in the memory 120 and 170, and may be executed by the processors 110 and 160.
  • the memories 120 and 170 may be included in the processors 110 and 160 or may be installed outside the processors 110 and 160 and connected to the processors 110 and 160 by a known means.
  • the above descriptions of the AP device 100 and the station device 150 may be applied to a base station device and a terminal device in another wireless communication system (eg, LTE / LTE-A system).
  • LTE / LTE-A system another wireless communication system
  • the detailed configuration of the AP and the station apparatus as described above may be implemented to be applied independently or the two or more embodiments described at the same time described in the various embodiments of the present invention, overlapping description is omitted for clarity do.
  • FIG. 23 illustrates an exemplary structure of a processor of an AP device or a station device according to an embodiment of the present invention.
  • the processor of an AP or station may have a plurality of layer structures, and FIG. 29 concentrates on the MAC sublayer 3810 and the physical layer 3820 among these layers, particularly on a Data Link Layer (DLL).
  • DLL Data Link Layer
  • the PHY 3820 may include a Physical Layer Convergence Procedure (PLCP) entity 3811 and a Physical Medium Dependent (PMD) entity 3822.
  • PLCP Physical Layer Convergence Procedure
  • PMD Physical Medium Dependent
  • Both the MAC sublayer 3810 and the PHY 3820 each contain management entities conceptually referred to as a MAC sublayer management entity (MLME) 3811.
  • MLME MAC sublayer management entity
  • SME 3830 In order to provide correct MAC operation, a Station Management Entity (SME) 3830 exists within each station.
  • SME 3830 is a layer-independent entity that may appear within a separate management plane or appear to be off to the side. Although the precise functions of the SME 3830 are not described in detail herein, in general, this entity 3830 collects layer-dependent states from various Layer Management Entities (LMEs) and values of layer-specific parameters. It can be seen that it is responsible for such functions as setting. SME 3830 can generally perform these functions on behalf of a generic system management entity and implement standard management protocols.
  • LMEs Layer Management Entities
  • FIG. 23 shows some examples of exchanging GET / SET primitives.
  • the XX-GET.request primitive is used to request the value of a given MIB attribute (management information based attribute information).
  • the XX-GET.confirm primitive is used to return the appropriate MIB attribute information value if the Status is "Success", otherwise it is used to return an error indication in the Status field.
  • the XX-SET.request primitive is used to request that the indicated MIB attribute be set to a given value. If the MIB attribute means a specific operation, this is to request that the operation be performed.
  • the XX-SET.confirm primitive confirms that the indicated MIB attribute is set to the requested value when status is "success", otherwise it is used to return an error condition in the status field. If the MIB attribute means a specific operation, this confirms that the operation has been performed.
  • the MLME 3811 and the SME 3830 can exchange various MLME_GET / SET primitives through the MLME_SAP 3850.
  • various PLCM_GET / SET primitives can be exchanged between PLME 3821 and SME 3830 via PLME_SAP 3860, and MLME 3811 and PLME 3870 via MLME-PLME_SAP 3870. Can be exchanged between.
  • Embodiments of the present invention described above may be implemented through various means.
  • embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.
  • a method according to embodiments of the present invention may include one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), and Programmable Logic Devices (PLDs). It may be implemented by field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs field programmable gate arrays
  • processors controllers, microcontrollers, microprocessors, and the like.
  • the method according to the embodiments of the present invention may be implemented in the form of a module, a procedure, or a function that performs the functions or operations described above.
  • the software code may be stored in a memory unit and driven by a processor.
  • the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
  • embodiments of the present invention can be applied to various wireless communication systems, including IEEE 802.11 systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un mode de réalisation de la présente invention, un procédé par lequel un point d'accès (AP) transmet une trame sans fil dans un système LAN sans fil génère, par l'AP, une trame sans fil comprenant un champ de signalisation et un champ de données. Lorsque la trame sans fil doit transmettre des données à une pluralité de stations STA, le champ de signalisation comprend un premier champ de signalisation (champ SIG A) comprenant des premières informations de commande communes pour la pluralité de STA et un second champ de signalisation (champ SIG B) comprenant des informations de commande individuelles pour la pluralité respective de STA, puis le second champ de signalisation comprend un champ commun comprenant des secondes informations de commande communes pour la pluralité de STA et un champ individuel après le champ commun et comprenant des informations de commande individuelles pour la pluralité respective de STA. L'AP peut transmettre à une ou plusieurs STA la trame sans fil générée.
PCT/KR2016/004980 2015-05-27 2016-05-12 Procédé de transmission d'une trame sans fil comprenant de multiples champs de signalisation et dispositif associé Ceased WO2016190578A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201562166708P 2015-05-27 2015-05-27
US62/166,708 2015-05-27
US201562167905P 2015-05-29 2015-05-29
US62/167,905 2015-05-29

Publications (1)

Publication Number Publication Date
WO2016190578A1 true WO2016190578A1 (fr) 2016-12-01

Family

ID=57393818

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/004980 Ceased WO2016190578A1 (fr) 2015-05-27 2016-05-12 Procédé de transmission d'une trame sans fil comprenant de multiples champs de signalisation et dispositif associé

Country Status (1)

Country Link
WO (1) WO2016190578A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019190150A1 (fr) * 2018-03-26 2019-10-03 엘지전자 주식회사 Procédé et appareil de transmission d'unité ppdu sur la base d'un accès s-tdma dans un système de réseau lan sans fil
WO2020204298A1 (fr) * 2019-04-01 2020-10-08 엘지전자 주식회사 Limite de temps pour une réémission de harq
WO2020209558A1 (fr) * 2019-04-09 2020-10-15 엘지전자 주식회사 Remplissage de mpdu pour une opération harq

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120275446A1 (en) * 2009-12-22 2012-11-01 Stacey Robert J 802.11 very high throughput preamble signaling field with legacy compatibility
US20120320896A1 (en) * 2009-12-18 2012-12-20 Electronics And Telecommunications Research Institute Method for sending/receiving data in a wireless packet communication system in which there is simultaneous communication with various terminals
WO2013085363A1 (fr) * 2011-12-09 2013-06-13 엘지전자 주식회사 Procédé pour la transmission et la réception d'une trame dans un système de réseau local sans fil, et dispositif pour la mise en œuvre de ce procédé
US20150139089A1 (en) * 2013-11-19 2015-05-21 Shahrnaz Azizi Master station and method for high-efficiency wi-fi (hew) communication using traveling pilots

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120320896A1 (en) * 2009-12-18 2012-12-20 Electronics And Telecommunications Research Institute Method for sending/receiving data in a wireless packet communication system in which there is simultaneous communication with various terminals
US20120275446A1 (en) * 2009-12-22 2012-11-01 Stacey Robert J 802.11 very high throughput preamble signaling field with legacy compatibility
WO2013085363A1 (fr) * 2011-12-09 2013-06-13 엘지전자 주식회사 Procédé pour la transmission et la réception d'une trame dans un système de réseau local sans fil, et dispositif pour la mise en œuvre de ce procédé
US20150139089A1 (en) * 2013-11-19 2015-05-21 Shahrnaz Azizi Master station and method for high-efficiency wi-fi (hew) communication using traveling pilots

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KWON, YOUNG HOON ET AL.: "SIG Structure for UL PPDU", IEEE 802.11-15/0574R0, 11 May 2015 (2015-05-11), XP055332592, Retrieved from the Internet <URL:http://www.ieee802.org/11/Reports/tgax_update.htm> *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019190150A1 (fr) * 2018-03-26 2019-10-03 엘지전자 주식회사 Procédé et appareil de transmission d'unité ppdu sur la base d'un accès s-tdma dans un système de réseau lan sans fil
US11641237B2 (en) * 2018-03-26 2023-05-02 Lg Electronics Inc. Method and apparatus for transmitting PPDU on basis of S-TDMA in wireless LAN system
WO2020204298A1 (fr) * 2019-04-01 2020-10-08 엘지전자 주식회사 Limite de temps pour une réémission de harq
US11870591B2 (en) 2019-04-01 2024-01-09 Lg Electronics Inc. Time limit for HARQ retransmission
WO2020209558A1 (fr) * 2019-04-09 2020-10-15 엘지전자 주식회사 Remplissage de mpdu pour une opération harq
US12150098B2 (en) 2019-04-09 2024-11-19 Lg Electronics Inc. MPDU padding for HARQ operation

Similar Documents

Publication Publication Date Title
WO2016024770A1 (fr) Procédé et dispositif pour permettre à une station de recevoir un signal dans un système de communication sans fil
WO2016140533A1 (fr) Procédé de transmission de trame radio contenant des informations de commande dans un système lan sans fil, et appareil associé
WO2017007266A1 (fr) Procédé d&#39;opération de sondage dans un système de réseau local sans fil et appareil correspondant
WO2016039534A1 (fr) Procédé et dispositif de réception de signaux par une station dans un système de communication sans fil
WO2016089078A1 (fr) Procédé d&#39;attribution de ressources de trame à bande large dans un système de réseau local sans fil et appareil associé
WO2017007180A1 (fr) Accès aléatoire de station fonctionnant dans un système de réseau local sans fil
WO2016108633A1 (fr) Procédé et dispositif permettant d&#39;effectuer une transmission de liaison montante après la réception d&#39;une trame de déclenchement dans un système de lan sans fil
WO2017074024A1 (fr) Procédé de mise à jour de nav dans un système lan sans fil et appareil correspondant
WO2017057990A1 (fr) Procédé permettant le fonctionnement de bss multiples dans un système de réseau local sans fil et dispositif s&#39;y rapportant
WO2016032302A1 (fr) Procédé et dispositif au moyen desquels une station émet un signal dans un système de communication sans fil
WO2016122265A1 (fr) Procédé pour transmettre des informations d&#39;attribution de ressource de transmission de données dans un système de réseau local (lan) sans fil, et appareil associé
WO2018062787A1 (fr) Procédé de fonctionnement d&#39;un émetteur-récepteur d&#39;activation dans un système lan sans fil et appareil correspondant
WO2017018615A1 (fr) Procédé permettant d&#39;émettre et de recevoir un signal dans un système de réseau local (lan) sans fil et dispositif associé
WO2016200020A1 (fr) Procédé pour émettre et recevoir un signal dans un système de réseau local (lan) sans fil et appareil associé
WO2017018687A1 (fr) Procédé de transmission de trame sans fil basé sur la signalisation d&#39;un classement de champ de chaque bande, et dispositif associé
WO2016178474A1 (fr) Procédé de transmission d&#39;une trame sans fil comprenant de multiples champs de signalisation et dispositif associé
WO2017086731A1 (fr) Procédé de fonctionnement en mode d&#39;économie d&#39;énergie dans un système lan sans fil, et appareil s&#39;y rapportant
WO2017022897A1 (fr) Procédé pour émettre-recevoir un signal dans un système lan sans fil et appareil associé
WO2017043820A1 (fr) Procédé de sondage pour une transmission de formation de faisceau dans un système de réseau local (lan) sans fil, et appareil associé
WO2023239149A1 (fr) Procédé et dispositif de signalisation basée sur le fonctionnement de points d&#39;accès multiples dans un système lan sans fil
WO2017026769A1 (fr) Procédé de transmission de signaux en mode dcm dans un système lan sans fil, et dispositif associé
WO2016111558A1 (fr) Procédé et dispositif d&#39;émission et de réception de trame concernant une émission multi-utilisateurs dans un système de réseau local sans fil
WO2016190578A1 (fr) Procédé de transmission d&#39;une trame sans fil comprenant de multiples champs de signalisation et dispositif associé
WO2023249409A1 (fr) Procédé et dispositif de transmission et de réception de trame de déclenchement dans un système de réseau local sans fil
WO2024005585A1 (fr) Procédé et dispositif de transmission ou de réception basée sur un intervalle d&#39;écoute pour un dispositif à liaisons multiples dans un système lan sans fil

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: 16800218

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16800218

Country of ref document: EP

Kind code of ref document: A1