Abstract: This application relates to the field of communications technologies, in particularly related to wireless fidelity (WIFI) technologies, and provides a method and apparatus for reducing peak to average power ratio (PAPR) for transmitting a physical layer protocol data units (PPDUs). The method can be used for both an access point (AP) and a station (STA). The method comprises: operating on a first disregard bits sequence to obtain a second disregard bits sequence, wherein the first disregard bits sequence is with all bits set to ‘1’, and transmitting the PPDU, wherein the PPDU comprises the second disregard bits sequence.

Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.

Abstract: A wireless access point, AP, (110a) is disclosed, which is configured to share a transmission opportunity with at least one further wireless access point (110b) within a Multi-AP set using a Coordinated Beamforming, C-BF, scheme. The wireless AP (110a) comprises a processing circuitry (111) configured to generate a C-BF Null Data PPDU Announcement, C-BF NDPA, frame, wherein the C-BF NDPA frame comprises a Multi-AP set identifier. Moreover, the wireless AP (110a) comprises a communication interface (113) configured to transmit the C-BF NDPA frame to one or more wireless stations (120a) associated with the wireless AP (110a) and/or to one or more further wireless stations (120b) associated with the at least one further wireless AP (110b) within the Multi-AP set.

Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.

Abstract: This application provides a resource unit combination indication method and a communications apparatus. The method includes: determining a physical layer protocol data unit PPDU, where the PPDU includes a signal field, the signal field includes a resource unit allocation subfield and a combination indication corresponding to the resource unit allocation subfield, the resource unit allocation subfield indicates a plurality of resource units, and the combination indication indicates combination information of the plurality of resource units; and sending the PPDU. The method provided in this application can support one or more users in transmitting data by using a plurality of contiguous or discontiguous RUs, and indicate a combination status of the plurality of RUs to the user.

Abstract: The present disclosure relates to a network device for announcing a multi-access point (M-AP), joint channel sounding procedure in a WiFi network for acquiring channel state information between multiple access points (APs), which belong to a same M-AP set, and multiple stations associated with at least one of those multiple APs, wherein the network device is an access point of a subset of the M-AP set which subset includes APs that are configured to transmit an announcement frame, the network device comprising: a processor configured to provide the announcement frame of the M-AP joint channel sounding procedure, wherein the announcement frame comprises an identification of the M-AP set and identifications of the APs, associated to the subset of the M-AP set which subset of APs is configured to transmit the announcement frame; and a transceiver configured to transmit the announcement frame.

Abstract: A method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a data field; and sending the PPDU to a first station and a second station, where the first station is a station that does not support receiving a midamble, and the second station is a station that supports receiving the midamble. A second data field transmitted on a second resource unit allocated to the second station includes a midamble subfield. A first data field transmitted on a first resource unit allocated to the first station includes a useful information subfield. The useful information subfield includes useful data information, and the useful information subfield is located before a first OFDM symbol corresponding to the midamble subfield.

Abstract: This application relates to the field of communications technologies, in particularly related to wireless fidelity (WIFI) technologies, and provides a method and apparatus for reducing peak to average power ratio (PAPR) for transmitting a physical layer protocol data units (PPDUs). The method can be used for both an access point (AP) and a station (STA). The method comprises: operating on a first disregard bits sequence to obtain a second disregard bits sequence, wherein the first disregard bits sequence is with all bits set to ‘1’, and transmitting the PPDU, wherein the PPDU comprises the second disregard bits sequence.

Abstract: Embodiments of the present invention provide a physical layer protocol data unit PPDU transmission method and a corresponding PPDU transmission apparatus. Application of the method and apparatus in the embodiments of the present invention enables a receive end to quickly determine the starting position of the feature signal sequence by means of blind detection, and ensures that the receive end quickly completes data processing and status switching.

Abstract: A system and method for triggering beamformed uplink (UL) physical layer protocol data units (PPDUs) are disclosed. The system comprises an access point (AP) and one or more stations (STAs). The AP sends a soliciting frame to the one or more STAs, wherein the frame comprises a null data packet, NDP, request, NDPR, indicator and receive an NDP PPDU from each of the one or more solicited STAs. The AP, then computes the precoder for each of the one or more solicited STAs and send the one or more solicited STA a trigger frame with a beamforming report. The AP receives from each of the STAs one or more beamformed UL data packets and sends a block acknowledgement to the one or more solicited STAs indicating the successful receipt of the one or more beamformed UL data packets.

Abstract: This application provides a resource unit combination indication method and a communications apparatus. The method includes: determining a physical layer protocol data unit PPDU, where the PPDU includes a signal field, the signal field includes a resource unit allocation subfield and a combination indication corresponding to the resource unit allocation subfield, the resource unit allocation subfield indicates a plurality of resource units, and the combination indication indicates combination information of the plurality of resource units; and sending the PPDU. The method provided in this application can support one or more users in transmitting data by using a plurality of contiguous or discontiguous RUs, and indicate a combination status of the plurality of RUs to the user.

Abstract: A multi-link wireless access point (AP) is configured to exchange a plurality of frames via a plurality of setup links with a plurality of multi-link wireless non-AP stations in a wireless communication network. The multi-link wireless AP comprises a communication interface configured to send a management frame to at least one of the plurality of multi-link wireless non-AP stations operating on a first setup link, wherein the management frame comprises information for the at least one of the plurality of multi-link wireless non-AP stations for identifying at least the first setup link of the plurality of setup links to be disabled. The multi-link wireless AP further comprises a processing circuitry configured to, in response to sending the management frame, disable at least the first setup link for reducing a power required to operate at least the first setup link.

Abstract: This application relates to the field of communications technologies, in particular Wireless Local Area Network technologies, and provides a method and apparatus for reducing a peak to average power ratio (PAPR) for transmitting a physical layer protocol data unit (PPDU), in particular reducing the PAPR for the U-SIG field. Methods are disclosed for both an access point (AP) and stations (STA).

Abstract: A multi-link device (MLD) has a medium access control (MAC) layer management entity (MLME) and a station management entity (SME). The SME indicates a selected link identity (ID) to the MLME. The selected link ID is used to indicate the link being used for frame exchange between an access point (AP) affiliated with an AP MLD and a non-AP station (STA) affiliated with a non-AP MLD. One or more frames are exchanged through the link indicated by the selected link ID.

Abstract: A beamformer device is provided for WiFi communication schemes such as IEEE 802.11ax and 802.11be. The beamformer device is configured to: transmit a request to a beamformee device, the request comprising a set of sounding tone indices, the set of sounding tone indices indicating tones for which a report of beamforming information is requested from the beamformee device, wherein the tones are defined according to a first WiFi scheme, wherein the set of sounding tone indices is based on a first tone plan defined by the first WiFi scheme for a partial channel bandwidth and on a second tone plan defined by a second WiFi scheme for a full channel bandwidth. A corresponding beamformee device is further provided.

Abstract: The present disclosure relates to techniques for forward error correction and packet padding in radio transmission, e.g. WiFi communication schemes such as IEEE 802.11ax and 802.11be. In particular, the disclosure relates to a communication device configured to: transmit and/or receive a data frame based on a set of pre&post-Forward Error Correction (pre&post-FEC) parameters and a set of packet extension (PE) parameters, wherein the set of pre&post-FEC parameters is based on an extension of a set of pre&post-FEC parameters defined for a second radio transmission technology with respect to a size of resource units (RUs) supported by a first radio transmission technology, wherein the set of pre&post-FEC parameters is based on a combination of RUs that is supported by the first radio transmission technology, and wherein the set of PE parameters is based on an extension of a set of PE parameters defined for the second radio transmission technology.

Abstract: A wireless transmitting device is configured to: obtain a compressed-mode PPDU that includes one or more SC fields, where each SC field corresponds to one MU-MIMO group of the one or more MU-MIMO groups and is indicative of a spatial stream configuration for user devices of that MU-MIMO group; and transmit the PPDU to the user devices of the one or more MU-MIMO groups over a predetermined BW. Further, a user device is configured to: receive a compressed-mode PPDU from a wireless transmitting device; and decode the PPDU to obtain a SC field corresponding to the MU-MIMO group that the user device belongs to.

Abstract: A radio physical layer protocol data unit (PPDU) sending method includes: obtaining, a radio physical layer protocol data unit (PPDU), wherein the PPDU includes a high efficiency-signal field A (HE-SIG-A) and a high efficiency-signal field B (HE-SIG-B), the HE-SIG-A includes a field indicating a quantity of orthogonal frequency division multiplexing (OFDM) symbols in the HE-SIG-B, and wherein a value of the field indicates one of the following: that the quantity of OFDM symbols included in the HE-SIG-B is greater than or equal to 16, or the quantity of OFDM symbols included in the HE-SIG-B; and sending the PPDU.

Abstract: This disclosure provides data sending and receiving methods and apparatuses. In an implementation, a device performs a non-replication operation on a frequency domain sequence on subcarriers of a first bandwidth, to obtain a frequency domain sequence on subcarriers of a second bandwidth in a transmission bandwidth, transforms the frequency domain sequence on the subcarriers of the first bandwidth and the frequency domain sequence on the subcarriers of the second bandwidth into a time domain, and performs radio frequency processing on time domain data and then sends the processed time domain data.

Abstract: A device resolves a collision between its transmission and a simultaneous transmission of another device. The device is configured to interrupt its transmission, determine a negotiation signal, and determine at least one available resource to occupy with the negotiation signal during a negotiation period. Further, the device is configured to transmit the negotiation signal on the at least one available resource and simultaneously receive a negotiation signal on another resource from at least one other device during the negotiation period. Then, the device is configured to decide, based on all negotiation signals, whether to retransmit the interrupted transmission after the negotiation period.