公开(公告)号：US20200015271A1

公开(公告)日：2020-01-09

申请号：US16576624

申请日：2019-09-19

Applicant: NEWRACOM, INC.

Inventor： Dae Won LEE ,  Yong Ho SEOK ,  Yujin NOH

IPC: H04W74/08

Abstract: A wireless device generating a High-Efficiency (HE) PHY Protocol Data Unit (PPDU) for transmission sets a Packet Extension Disambiguity bit of an HE Signal-A (HE-SIG-A) field of the HE PPDU based on respective durations of a packet extension of the HE PPDU and a signal extension of the HE PPDU. The wireless device may determine whether a relationship T PE + ( 4 × ⌈ TXTIME - T SE - 20 4 ⌉ - ( TXTIME - T SE - 20 ) ) ≥ T SYM is satisfied, where TPE is the duration of the packet extension, TXTIME is a transmission time of the HE PPDU, TSE is the duration of the signal extension, and TSYM is a duration of symbols in a data field of the HE PPDU. The wireless device may set the Packet Extension Disambiguity bit to one when the relationship is satisfied; and to zero when the relationship is not satisfied.

公开(公告)号：US10523379B2

公开(公告)日：2019-12-31

申请号：US16000576

申请日：2018-06-05

Applicant: NEWRACOM, INC.

Inventor： Ahmad Reza Hedayat

IPC: H04L5/00 ,  H04L29/06 ,  H04W72/12 ,  H04W84/12 ,  H04W74/06

Abstract: In an example of wireless communications, an access point (AP) may send a first trigger frame to multiple stations. In response, some or all of the stations may transmit their respective uplink frames to the AP. The uplink frames may include status information of the stations such as buffered data size. The AP may send a second trigger frame, including resource allocation assignments to inform stations which sub-bands may be used to send their payloads to the AP. The AP may allocate sub-bands to stations based on the status information of the station. The AP may allocate a relatively narrow sub-band to one or more stations when the status information is not known to the AP. Status information may be provided in certain control fields of a data frame. Random access may be provided by assigning a sub-band to multiple stations. Other methods, apparatus, and computer-readable media are also disclosed.

公开(公告)号：US20190238281A1

公开(公告)日：2019-08-01

申请号：US16380923

申请日：2019-04-10

Applicant: NEWRACOM, INC.

Inventor： Yongho SEOK

IPC: H04L5/00 ,  H04B7/0452 ,  H04L27/26 ,  H04W72/04

CPC classification number: H04L5/003 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0048 ,  H04L27/2601 ,  H04L27/2602 ,  H04W72/0413 ,  H04W72/0446 ,  H04W84/12 ,  H04W88/08

Abstract: The present invention provides a new uplink (UL) Physical layer Protocol Data Unit (PPDU) frame format to support Multi-User Multiple Input Multiple Output (MU-MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA), and methods, apparatuses, etc. therefor. In an aspect of the present invention, a method by a station (STA) for transmitting an UL PPDU frame to an Access Point (AP) simultaneously with one or more other STAs in a Wireless Local Area Network (WLAN) may include receiving a frame including a parameter for the PPDU frame from the AP; and participating in UL MU PPDU frame transmission based on the parameter.

公开(公告)号：US10327172B2

公开(公告)日：2019-06-18

申请号：US15452567

申请日：2017-03-07

Applicant: NEWRACOM, INC.

Inventor： Daewon Lee ,  Sungho Moon ,  Yujin Noh ,  Minho Cheong

IPC: H04W28/06 ,  H04L27/26 ,  H04L25/00 ,  H04L25/02 ,  H04B7/0452 ,  H04L1/06

Abstract: In wireless communications for a 20 megahertz (MHz) channel bandwidth, a first device may determine a high efficiency long training field (HE-LTF) mode. The first device may generate an HE-LTF symbol by using a portion or an entirety of an HE-LTF sequence corresponding to the channel bandwidth and HE-LTF mode. The first device may transmit, in the channel bandwidth, a high efficiency physical layer protocol data unit (HE PPDU) that includes the HE-LTF symbol. A second device may receive, in the 20 MHz channel bandwidth, a downlink HE PPDU that includes an HE-LTF symbol. The second device may obtain, from the HE-LTF symbol, a portion or an entirety of an HE-LTF sequence corresponding to the channel bandwidth and an HE-LTF mode of the HE-LTF symbol. The downlink HE PPDU may be the HE PPDU from the first device. Other methods, apparatus, and computer-readable media are also disclosed.

公开(公告)号：US10326618B2

公开(公告)日：2019-06-18

申请号：US15626966

申请日：2017-06-19

Applicant: NEWRACOM, INC.

Inventor： Heejung Yu ,  Minho Cheong ,  Hyoung Jin Kwon

IPC: H04L25/03 ,  H04L25/02 ,  H04B7/0452 ,  H04W84/12 ,  H04W74/00 ,  H04B7/04

Abstract: A method of transmitting a frame is provided by a device in a WLAN. The device sets as additional data subcarriers some of subcarriers which are not set as data subcarriers in at least part of fields included in a frame of a legacy frame format, and allocates information to the additional data subcarriers.

公开(公告)号：US10321483B1

公开(公告)日：2019-06-11

申请号：US15085336

申请日：2016-03-30

Applicant: NEWRACOM, INC.

Inventor： Sungho Moon ,  Dae Won Lee ,  Young Hoon Kwon

IPC: H04W74/08 ,  H04W24/08 ,  H04W84/12

Abstract: A transmitting device may perform mid-packet detection (MPD) in a wireless channel by receiving a signal from the wireless channel, detecting first symbols having a first symbol duration in the signal during a first detection window, and detecting second symbols having a second symbol duration in the signal during a second detection window. The first and second symbol durations, excluding CPs, may be 3.2 and 12.8 microseconds respectively. A transmitting device may perform MPD in a wireless channel by receiving a signal from the channel, performing an MPD of symbols in the signal, producing first and second comparison result by comparing an output of the MDP to respective first and second thresholds, and determine whether to transmit a frame using the first comparison result and the second comparison result.

公开(公告)号：US20190109674A1

公开(公告)日：2019-04-11

申请号：US16203501

申请日：2018-11-28

Applicant: NEWRACOM, INC.

Inventor： Ahmad Reza HEDAYAT

IPC: H04L1/16 ,  H04W72/12 ,  H04L5/00 ,  H04B7/0452 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04L1/1621 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0055 ,  H04L5/0064 ,  H04L5/0082 ,  H04L5/0091 ,  H04L2001/0093 ,  H04W72/1268 ,  H04W72/1289 ,  H04W84/12

Abstract: In an example of multi-user wireless communications, an access point may send a downlink frame to multiple stations. Some or all of the stations may generate and transmit their respective uplink frames. The uplink frames from the stations may be aggregated or multiplexed to form a final uplink frame that is received by the access point. The uplink frames may be block acknowledgment or acknowledgment (BA or ACK) frames. Uplink response scheduling may be located in a payload of the downlink frame, in which the uplink response scheduling indicates one or more resource units assigned to the multiple stations for transmitting the uplink frames. In some examples, the uplink response scheduling is in a control field of the payload, in a trigger frame as part of the payload. In some aspects, the downlink frame is part of a multicast transmission. Other methods, apparatus, and computer-readable media are also disclosed.

公开(公告)号：US10257324B2

公开(公告)日：2019-04-09

申请号：US15008622

申请日：2016-01-28

Applicant: NEWRACOM, Inc.

Inventor： Daewon Lee ,  Yongho Seok ,  Yujin Noh ,  Sungho Moon ,  Minho Cheong

IPC: H04L1/00 ,  H04L29/06 ,  H04W84/12 ,  H04L1/16

Abstract: The embodiments provide a method implemented by a network device for transmitting link adaptation feedback in a Wireless Local Area Network (WLAN) that supports multi-user simultaneous transmission. The method generates and transmits a frame that includes one or more link adaptation feedback values associated with a wireless communications link between the network device and a second network device. In one aspect, the one or more link adaptation feedback values may include a link adaptation feedback value for an entire operation bandwidth of the wireless communications link and a link adaptation feedback value for a given subchannel within the operation bandwidth. In another aspect, link adaptation feedback values for one or more users of a multi-user simultaneous transmission are transmitted in a multi-user acknowledgment (ACK) frame. The embodiments allow for efficient link adaptation in a multi-user simultaneous transmission environment.

公开(公告)号：US10257003B2

公开(公告)日：2019-04-09

申请号：US15705047

申请日：2017-09-14

Applicant: NEWRACOM, INC.

Inventor： Young Hoon Kwon

IPC: H01L27/26 ,  H04W72/02 ,  H04W72/12 ,  H04L5/00 ,  H04L27/26

Abstract: An Access Point (AP) performs a Multi-User (MU) transmission by allocating a plurality of resources of an Up-Link (UL) MU transmission to a first plurality of stations, and by transmitting, using one or more 20 MHz channels, a Down-Link (DL) PHY Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU). The DL PPDU includes trigger information. The trigger information solicits the first plurality of stations to participate in the UL MU transmission using the allocated resources. All of the allocated resources may be in the one or more 20 MHz channels of the DL PPDU. The allocated resources may include at least one resource in each of the one or more 20 MHz channels of the DL PPDU.

公开(公告)号：US10243641B2

公开(公告)日：2019-03-26

申请号：US15374363

申请日：2016-12-09

Applicant: NEWRACOM, INC.

Inventor： Heejung Yu

IPC: H04W4/00 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04L27/18 ,  H04L29/06 ,  H04W84/12 ,  H04L25/02

Abstract: A method of transmitting a frame by a device in a wireless communication network is provided. The device generates a first symbol having a first subcarrier spacing where a symbol duration of the first symbol, excluding a guard interval, has a first length. The device generates a second symbol having a second subcarrier spacing narrower than the first subcarrier spacing wherein a symbol duration of the second symbol, excluding a guard interval, has a second length that is twice the first length. The device transmits a frame including the first symbol and the second symbol.