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公开(公告)号：US20210320763A1
公开(公告)日：2021-10-14
申请号：US17211969
申请日：2021-03-25
Applicant: NXP USA, Inc.
Inventor： Rui Cao , Sudhir Srinivasa , Hongyuan Zhang
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.
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公开(公告)号：US20210266386A1
公开(公告)日：2021-08-26
申请号：US17182075
申请日：2021-02-22
Applicant: NXP USA, Inc.
Inventor： Rui Cao , Liwen Chu , Sudhir Srinivasa , Hongyuan Zhang , Yan Zhang , Xiayu Zheng
Abstract: Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method for wireless communications involves encoding bits in a first preamble portion of a packet that are defined on a per-channel basis and that are repeated across multiple frequency blocks of a bandwidth, encoding bits in a second preamble portion of the packet that are defined on the per-channel basis and that are repeated within at least one frequency block of the bandwidth, encoding bits in a third preamble portion of the packet that are defined on a two-channel basis and that are repeated within at least one frequency block of the bandwidth, padding the third preamble portion of the packet to have a same length for each of the frequency blocks, and transmitting the packet.
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公开(公告)号：US10742780B2
公开(公告)日：2020-08-11
申请号：US15943170
申请日：2018-04-02
Applicant: NXP USA, Inc.
Inventor： Sudhir Srinivasa , Hongyuan Zhang
Abstract: In generating a physical layer (PHY) data unit for transmission via a communication channel, information bits to be included in the PHY data unit are received. A number of padding bits are added to the information bits. The number of padding bits is determined based on respective virtual values of each of one or more encoding parameters. The information bits are parsed to a number of encoders and are encoded, using the number of encoders, to generate coded bits. The coded bits are padded such that padded coded bits correspond to respective true values of each of the one or more encoding parameters. The PHY data unit is generated to include the padded coded bits.
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公开(公告)号：US20240340031A1
公开(公告)日：2024-10-10
申请号：US18296759
申请日：2023-04-06
Applicant: NXP USA, Inc.
Inventor： Sai-Wang Tam , Tian Liu , Alireza Razzaghi , Alden C. Wong , Ovidiu Carnu , Wai Lau , Sridhar Reddy Narravula , Yui Lin , Sudhir Srinivasa
CPC classification number: H04B1/0475 , G04F10/005 , H03M1/1014 , H04B2001/0408
Abstract: A cancellation circuit includes a limiter connected to an output of a first transmitter power amplifier that converts in input sinewave to a digital square wave and a digital to time converter (DTC) connected to the limiter. A RF digital to RF converter is connected to the DTC that converts the digital square wave input into an analog RF output. A cancellation amplifier with an input receives an output from the RF digital to RF converter and has an output connected to an output of a second transmitter power amplifier. The cancellation amplifier produces a cancellation signal to cancel an interference signal at the output of the second transmitter power amplifier from the output of the first transmitter power amplifier. A power detector is connected to the output of the second power amplifier that produces a power value detected at the output of the second power amplifier.
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公开(公告)号：US12068902B2
公开(公告)日：2024-08-20
申请号：US18349311
申请日：2023-07-10
Applicant: NXP USA, Inc.
Inventor： Rui Cao , Sudhir Srinivasa , Hongyuan Zhang , Liwen Chu
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.
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Patent Agency Ranking
公开(公告)号：US20240171430A1
公开(公告)日：2024-05-23
申请号：US18152817
申请日：2023-01-11
Applicant: NXP USA, Inc.
Inventor： Vijay Ahirwar , Nilesh Nilkanth Khude , Hari Ram Balakrishnan , Sudhir Srinivasa , Olivier Jerome Celestin Jamin
IPC: H04L25/08 , H04B7/0413
CPC classification number: H04L25/08 , H04B7/0413
Abstract: A multi-radio system comprises a first radio and a second radio co-located on the multi-radio system. The first radio is arranged to generate an RF transmit signal which is output by a first antenna of the first radio. In an example, the first radio comprises a radio frequency (RF) canceller arranged to output a RF cancellation signal which couples with the RF transmit signal received at a second antenna of the second radio. The RF cancellation signal that is output results in the cancellation of the RF transmit signal at the second antenna of the second radio.
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公开(公告)号：US20240171254A1
公开(公告)日：2024-05-23
申请号：US18516755
申请日：2023-11-21
Applicant: NXP USA, Inc.
Inventor： Sayak Roy , Ankit Sethi , Sudhir Srinivasa , Rui Cao , Hongyuan Zhang
IPC: H04B7/06
CPC classification number: H04B7/0697 , H04W84/12
Abstract: Embodiments of an apparatus and method for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to construct an orthogonal matrix, and a wireless transceiver configured to conduct wireless communications based on the orthogonal matrix. The size of the orthogonal matrix is 12×12 or 16×16.
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公开(公告)号：US11985089B2
公开(公告)日：2024-05-14
申请号：US17495367
申请日：2021-10-06
Applicant: NXP USA, Inc.
Inventor： Rui Cao , Sudhir Srinivasa , Xiayu Zheng , Hongyuan Zhang
CPC classification number: H04L5/0051 , H04B7/0617 , H04B7/0639 , H04L5/001
Abstract: Various embodiments relate to a method of sounding a plurality of stations (STAs) with mixed operating bandwidths using a null data packet (NDP), wherein the bandwidth of the NDP is wider than the bandwidth of one STA, including: grouping STAs of mixed operating bandwidth in one sounding sequence by a beamformer; transmitting a null data packet announcement (NDPA) to the STAs, wherein the NDPA indicates the requested partial bandwidth channel feedback for each STA by the beamformer; transmitting the wide-bandwidth NDP to the STAs by the beamformer; transmitting beamforming report poll (BFRP) frame to the STAs to trigger uplink transmission of channel feedback reports by the beamformer; and receiving by the beamformer a partial bandwidth channel feedback within the STA's operating bandwidth from the STAs; receiving and parsing channel feedback reports from the STAs used for following steered OFDMA transmissions by the beamformer.
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公开(公告)号：US20230309069A1
公开(公告)日：2023-09-28
申请号：US17655987
申请日：2022-03-22
Applicant: NXP USA, Inc.
Inventor： Hongyuan Zhang , Sudhir Srinivasa , Ken Kinwah Ho , Timothy J. Donovan , Foo Keong Tang , Liwen Chu
IPC: H04W72/04
CPC classification number: H04W72/0446 , H04W84/12
Abstract: One example discloses a wireless Access Point (AP) device, configured to operate within a wireless local area network (WLAN), including: a controller configured to generate a reserve slot time trigger frame and a request to transmit trigger frame; wherein the controller is configured to be coupled to an antenna; wherein the antenna is configured to transmit the trigger frames over a physical media to a set of user station devices (STAs) and exchange traffic with the set of STAs over the physical media; wherein the reserve slot time trigger frame is configured to reserve a slot time on the physical media; and wherein the request to transmit trigger frame is configured to command a first STA from the set of STAs to transmit data buffered in the first STA to the AP device.
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公开(公告)号：US11742897B2
公开(公告)日：2023-08-29
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 , H04W72/0453
CPC classification number: H04B7/024 , H04B7/0452 , H04L5/0048 , H04W72/0453
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.
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