公开(公告)号：US11019662B2

公开(公告)日：2021-05-25

申请号：US16404591

申请日：2019-05-06

Applicant: NEWRACOM, INC.

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

IPC: H04W4/00 ,  H04W74/08 ,  H04W8/26 ,  H04W84/12

Abstract: A wireless device determines a Basic Service Set (BSS) associated with a wireless transmitter by receiving a first frame, determining an address of the first frame, receiving a second frame, and determining, using the address of the first frame, a property of the second frame. Determining the property of the second frame may include determining whether the second frame is intra-BSS frame or an inter-BSS frame. Determining the property of the second frame may be performed by comparing an address of the second frame with the address of the first frame, and the second frame determined to be an intra-BSS frame when the address of the first frame matches the address of the second frame, and determined to be an inter-BSS frame otherwise. The address of the first frame may be a transmitter address (TA).

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：US10021694B2

公开(公告)日：2018-07-10

申请号：US15711872

申请日：2017-09-21

Applicant: NEWRACOM, INC.

Inventor： Yujin Noh ,  Yong Ho Seok ,  Dae Won Lee

IPC: H04W72/04 ,  H04W52/42 ,  H04W72/08 ,  H04W24/08

CPC classification number: H04W72/046 ,  H04B7/0452 ,  H04W24/08 ,  H04W52/42 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/085 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08

Abstract: A first wireless device may determine a bandwidth for transmitting a frame, calculate two or more Spatial Reuse (SR) parameter values for the bandwidth, set, using the SR parameter values, first and second SR fields of the frame based on the bandwidth and a channel center frequency in which the bandwidth is carried, and transmit the frame to a second wireless device on the bandwidth. The first and second SR fields may be set to a first value when the bandwidth is a 40 MHz bandwidth and the channel center frequency is in a 2.4 GHz band. The first and second SR fields may be set to the first value when the bandwidth is an 80+80 MHz bandwidth and the channel center frequency is in a 5 GHz band. The first value may be a minimum of SR parameter values for first and second bandwidths in the bandwidth.

公开(公告)号：US09867189B2

公开(公告)日：2018-01-09

申请号：US15280888

申请日：2016-09-29

Applicant: NEWRACOM, INC.

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

IPC: H04W72/04 ,  H04B7/0452 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04W72/0453 ,  H04B7/0452 ,  H04L27/2601 ,  H04W72/042 ,  H04W84/12

Abstract: A wireless device receives a frame including a first Resource Unit (RU) allocation subfield including resource information for a first frequency area and indicating a first number of user fields in a first channel that correspond to the first frequency area, and a second RU allocation subfield including resource information for a second frequency area and indicating of a second number of user fields in a second channel that correspond to the second frequency area. When the first and second frequency areas are a same RU, the wireless device determines, using both the RU allocation subfields, a number of users allocated to the same RU. A wireless device generates and transmits a frame including first and second RU allocation subfields as described above. When the first and second frequency area are a same RU, both the RU allocation subfields indicates a number of users allocated to the same RU.

公开(公告)号：US09832058B2

公开(公告)日：2017-11-28

申请号：US15340939

申请日：2016-11-01

Applicant: NEWRACOM, INC.

Inventor： Dae Won Lee ,  Yujin Noh ,  Young Hoon Kwon ,  Yongho Seok ,  Sungho Moon

IPC: H04L27/26 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04L27/2621 ,  H04L1/0071 ,  H04L1/0072 ,  H04L27/2602 ,  H04L27/2627 ,  H04L27/2649 ,  H04W84/12

Abstract: In wireless communications, a high-efficiency (HE) physical layer protocol data unit (PPDU) includes an HE signal-B (SIG-B) field. In order to prevent undesirably large peak-to-average power ratio (PAPR) transmissions caused by repeated information in the HE SIG-B field, the HE SIG-B field may be scrambled. Scrambling of the HE SIG-B field may include scrambling of modulated data tones of each of one or more HE SIG-B field channels of the HE SIG-B field. This scrambling may include applying a phase rotation to the modulated data tones within each of the one or more HE SIG-B field channels. This scrambling (or phase rotation) is performed in addition to a phase rotation applied to each entire HE SIG-B field channel that is commonly referred to as a gamma rotation.

公开(公告)号：US09801184B2

公开(公告)日：2017-10-24

申请号：US15393084

申请日：2016-12-28

Applicant: NEWRACOM, INC.

Inventor： Yujin Noh ,  Yong Ho Seok ,  Dae Won Lee

IPC: H04W72/04 ,  H04W52/42 ,  H04W72/08 ,  H04W24/08 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W72/046 ,  H04W24/08 ,  H04W52/42 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/085 ,  H04W88/02 ,  H04W88/08

Abstract: A first wireless device may determine a bandwidth for transmitting a frame, calculate two or more Spatial Reuse (SR) parameter values for the bandwidth, set, using the SR parameter values, first and second SR fields of the frame based on the bandwidth and a channel center frequency in which the bandwidth is carried, and transmit the frame to a second wireless device on the bandwidth. The first and second SR fields may be set to a first value when the bandwidth is a 40 MHz bandwidth and the channel center frequency is in a 2.4 GHz band. The first and second SR fields may be set to the first value when the bandwidth is an 80+80 MHz bandwidth and the channel center frequency is in a 5 GHz band. The first value may be a minimum of SR parameter values for first and second bandwidths in the bandwidth.

公开(公告)号：US09705622B2

公开(公告)日：2017-07-11

申请号：US15061897

申请日：2016-03-04

Applicant: NEWRACOM, INC.

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

IPC: H04J11/00 ,  H04L1/18 ,  H04L29/08

CPC classification number: H04J11/00 ,  H04L1/0041 ,  H04L1/1819 ,  H04L1/1854 ,  H04L69/324

Abstract: A wireless communication device in a wireless system may generate a High Efficiency Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (HE PPDU) frame including (i) an Orthogonal Frequency Division Multiplexing (OFDM) symbol including padding bits and (ii) an extension having a non-zero signal strength, and transmit the HE PPDU frame. A High Efficiency signal (HE-SIG) field of the transmitted HE PPDU frame may include an indication for a duration of the extension to avoid ambiguity of the extension. A communication device in a wireless system may receive an HE PPDU frame including (i) an OFDM symbol including padding bits, and (ii) an extension having a non-zero signal strength, and transmit an Acknowledgement frame a predetermined inter-frame space after an end of the HE PPDU frame. An HE-SIG field of the received HE PPDU may include an indication for duration of the extension to avoid ambiguity of the extension.

公开(公告)号：US09667394B2

公开(公告)日：2017-05-30

申请号：US15291947

申请日：2016-10-12

Applicant: NEWRACOM, INC.

Inventor： Dae Won Lee ,  Young Hoon Kwon ,  Yujin Noh ,  Sungho Moon ,  Ahmad Reza Hedayat

IPC: H04L5/00 ,  H04W72/12 ,  H04W74/08 ,  H04W84/12

CPC classification number: H04L5/0044 ,  H04L5/0007 ,  H04W72/121 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/08

Abstract: A wireless device receives a Multi-User Request-To-Send (MU-RTS) frame, descrambles first scrambled data in the MU-RTS frame using a first scrambling sequence, generates second scrambled data using a second scrambling sequence, and transmits a Clear-to-Send (CTS) frame including the second scrambled data in response to receiving the MU-RTS frame. The second scrambling sequence is an N-bit left cyclic shift of the first scrambling sequence. Another wireless device generates first scrambled data using a first scrambling sequence and transmits an MU-RTS frame including the first scrambled data. The wireless device receives a CTS frame transmitted in response to the MU-RTS frame, and descrambles second scrambled data in the CTS frame using a second scrambling sequence. The second scrambling sequence is an N-bit left cyclic shift of the first scrambling sequence. In either device, N may be 7, and lengths of the first and second scrambling sequences may be 127 bits.

公开(公告)号：US11050539B2

公开(公告)日：2021-06-29

申请号：US16816092

申请日：2020-03-11

Applicant: NEWRACOM, INC.

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

IPC: H04L5/00 ,  H04W72/12 ,  H04L27/00 ,  H04L27/26 ,  H04W72/04 ,  H04W84/12

Abstract: A wireless device transmits a frame by determining a plurality of Resource Units (RUs) of the frame, providing pilots in a first RU of the frame at a first set of positions, providing pilots in a second RU of the frame at a second set of positions, and transmitting the frame. The first set of positions is different from the second set of positions. A wireless device receives a frame including an RU including pilots and processes the pilots. When an RU for the data symbol includes an odd-numbered lowest subcarrier, the pilots are included at a first set of positions in the resource unit. When the RU includes an even-numbered lowest subcarrier, the pilots are included at a second set of positions in the resource unit. The second set of positions is different from the first set of positions.

公开(公告)号：US10470214B2

公开(公告)日：2019-11-05

申请号：US15647197

申请日：2017-07-11

Applicant: NEWRACOM, INC.

Inventor： Dae Won Lee ,  Yong Ho Seok ,  Yujin Noh

IPC: H04L12/28 ,  H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

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.