公开(公告)号：US20240291698A1

公开(公告)日：2024-08-29

申请号：US18589362

申请日：2024-02-27

Applicant: NXP USA, Inc.

Inventor： Priyanka Bansal ,  Hari Ram Balakrishnan ,  Sudhir Srinivasa ,  Rui Cao

IPC: H04L25/03 ,  H04L27/26

CPC classification number: H04L25/03866 ,  H04L27/2602

Abstract: A wireless communication system, apparatus, and methodology are described for enabling wireless communication devices to generate extended range Physical Layer Protocol Data Units (PPDUs) for wireless transmission to a destination communication devices by generating, at a first wireless communication device, a data sequence in which a plurality of repeated data symbols are encoded for wireless transmission to the second communication device, and then applying a scrambling sequence that is known to the first and second communication devices to the data sequence to generate an output data sequence wherein the plurality of repeated data symbols are pseudo-randomized prior to performing an inverse Fourier transform on the output data sequence.

公开(公告)号：US20240022459A1

公开(公告)日：2024-01-18

申请号：US18347801

申请日：2023-07-06

Applicant: NXP USA, Inc.

Inventor： Hongyuan Zhang ,  Hari Ram Balakrishnan ,  Sudhir Srinivasa

IPC: H04L27/20 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04L27/20 ,  H04L5/0053 ,  H04L1/0043

Abstract: A method and system comprises receiving a signal over an air interface. A binary sequence is detected in the signal. A legacy signal (L-SIG) field of a physical layer protocol data circuit (PPDU) is decoded based on the detected binary sequence and based on decoding the L-SIG field, two spoofing symbols which directly follow the L-SIG field is checked in the PPDU, wherein the two spoofing symbols comprise binary phase shift keying (BPSK) symbols. Based a presence of the two spoofing symbols, a long range portion of the PPDU is processed; and based on an absence of the two spoofing symbols, the PPDU is processed as a legacy PPDU.

公开(公告)号：US20240015060A1

公开(公告)日：2024-01-11

申请号：US18349311

申请日：2023-07-10

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Sudhir Srinivasa ,  Hongyuan Zhang ,  Liwen Chu

IPC: H04L27/34 ,  H04W28/06

CPC classification number: H04L27/3461 ,  H04W28/06

Abstract: In an 802.11be wireless system, a receiving station device signals a packet padding capability in a wireless area network in accordance with an Extremely High Throughput (EHT) communication protocol by constructing a MAC control management frame to include an EHT capability element indicating whether a packet extension value longer than 16 μs is supported by the receiving station device, where one or more fields in the EHT capability element include (1) a common nominal packet padding field having a plurality of values to signal different packet extension values for use with all transmission constellations, spatial streams NSS, and resource unit (RU) allocations supported by the first STA device, including at least one packet extension value longer than 16 μs; and/or (2) a PHY packet extension threshold (PPET) field comprising a plurality of PPET values to signal packet extension values including at least one packet extension value longer than 16 μs.

公开(公告)号：US20230188183A1

公开(公告)日：2023-06-15

申请号：US17644487

申请日：2021-12-15

Applicant: NXP USA, Inc.

Inventor： Ankit Sethi ,  Sayak Roy ,  Sudhir Srinivasa

IPC: H04B7/0452 ,  H04W74/08 ,  H04W72/04

CPC classification number: H04B7/0452 ,  H04W74/0816 ,  H04W74/0866 ,  H04W72/046

Abstract: A wireless network includes a networking device and various stations. The networking device determines an available bandwidth of each station of the wireless network. Further, the networking device assigns a bandwidth and at least one spatial stream to each station. The bandwidth assigned to each station is less than or equal to the available bandwidth of the corresponding station. Further, the bandwidth assigned to one station is different from and partially overlaps with the bandwidth assigned to another station. Similarly, the spatial stream assigned to one station is different from the spatial stream assigned to another station. The networking device generates a data packet indicative of the bandwidth and the spatial stream assigned to each station of the wireless network, and transmits the data packet to each station to enable multi-user multiple-input-multiple-output (MU-MIMO) communication between the networking device and the stations.

公开(公告)号：US11606234B2

公开(公告)日：2023-03-14

申请号：US17194847

申请日：2021-03-08

Applicant: NXP USA, INC.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Sudhir Srinivasa ,  Rui Cao

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/00

Abstract: Systems, apparatuses and methods described herein provide a method for padding a signal extension of orthogonal frequency-division multiplexing (OFDM) symbols. A transceiver may obtain a plurality of data symbols for transmission, and determine that a number of information bits for a last symbol of the plurality of data symbols is not an integer value. A special padding rule may be applied to add padding bits to the last symbol. A number of coded bits for the last symbol may be determined when the number of information bits for the last symbol has changed, and the plurality of data symbols for data transmission may be encoded based on the determined number of coded bits for the last symbol.

公开(公告)号：US11528104B2

公开(公告)日：2022-12-13

申请号：US17211969

申请日：2021-03-25

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Sudhir Srinivasa ,  Hongyuan Zhang

IPC: H04L5/00 ,  H04W88/08 ,  H04W84/12

Abstract: Various embodiments relate to a method for transmitting a Wi-Fi signal using a channel of 80 MHz or wider, wherein each 80 MHz segment has a tone plan, including: determining that a physical 20 MHz sub-channel overlaps the 80 MHz segment or OFDMA transmission is used for the 80 MHz segment; selecting an alternative 80 MHz tone plan; and transmitting data on the 80 MHz segment using the selected alternative 80 MHz tone plan.

公开(公告)号：US11457448B2

公开(公告)日：2022-09-27

申请号：US17182048

申请日：2021-02-22

Applicant: NXP USA, Inc.

Inventor： Liwen Chu ,  Rui Cao ,  Sudhir Srinivasa ,  Hongyuan Zhang ,  Huiling Lou ,  Young Hoon Kwon

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/00 ,  H04W80/02

Abstract: A method and an apparatus for operating a Basic Service Set (BSS) are disclosed. A method involves announcing, by a first wireless device to a second wireless device, a BSS operating channel, wherein the first wireless device has at least one of a first transmission power capability and a first bandwidth capability, the second wireless device has at least one of a second transmission power capability that is less than the first transmission power capability and a second bandwidth capability that is narrower than the first bandwidth capability, and wherein the BSS operating channel is at least one of a punctured operating channel and an unpunctured operating channel, associating, by the second wireless device, with the first wireless device via the announcement of the BSS operating channel from the first wireless device, and exchanging frames between the first wireless device and the second wireless device in the BSS operating channel.

公开(公告)号：US20220014238A1

公开(公告)日：2022-01-13

申请号：US17369923

申请日：2021-07-07

Applicant: NXP USA, Inc.

Inventor： Hari Ram Balakrishnan ,  Sudhir Srinivasa

IPC: H04B7/024 ,  H04B7/0452 ,  H04L5/00 ,  H04W72/04

Abstract: Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method for wireless communications involves assigning subcarriers of a first access point (AP) and a second AP to a subcarrier set of a virtual AP, generating, by the virtual AP, a packet that includes a signal for a station (STA) and that is transmitted using the subcarrier set, where generating the packet includes: encoding a preamble portion of the packet on the assigned subcarriers included in the subcarrier set, nulling the preamble portion of the packet for unassigned subcarriers of the first AP and the second AP, encoding a subsequent portion of the packet according to a Distributed Multiple-Input Multiple-Output (DMIMO) transmission, and transmitting the packet to the STA.

公开(公告)号：US20210392661A1

公开(公告)日：2021-12-16

申请号：US17349809

申请日：2021-06-16

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Yan Zhang ,  Liwen Chu ,  Hari Ram Balakrishnan ,  Sudhir Srinivasa

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00

Abstract: Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method for wireless communications involves generating a Physical Layer Protocol Data Unit (PPDU) that includes a resource unit (RU), wherein a size of the RU is less than a signal bandwidth and wherein data corresponding to the RU is distributed onto a disjoint set of subcarriers included in a frequency unit, and transmitting the PPDU using the disjoint set of subcarriers in accordance with a power spectrum density (PSD) limit.

公开(公告)号：US11165614B1

公开(公告)日：2021-11-02

申请号：US17098709

申请日：2020-11-16

Applicant: NXP USA, Inc.

Inventor： Sudhir Srinivasa ,  Yui Lin ,  Hongyuan Zhang ,  Mao Yu ,  Timothy J. Donovan

IPC: H04L27/26 ,  H04W84/12

Abstract: One example discloses an OFDM wireless communications device, including: a memory configured to support processing of OFDM tones; a controller, coupled to the memory, and configured to set the wireless communication device to a first mode and a second mode; wherein the first mode is configured to transmit or receive a first wireless communication signal having a first set of OFDM tones contained within an OFDM channel bandwidth; wherein the second mode is configured to transmit or receive a second wireless communication signal having a second set of OFDM tones contained within the OFDM channel bandwidth; and wherein the memory used for processing the first set of OFDM tones is same as the memory used for processing the second set of OFDM tones.