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

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：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.

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

IPC: H04L5/00 ,  H04B7/06

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.

公开(公告)号：US20240137791A1

公开(公告)日：2024-04-25

申请号：US18492273

申请日：2023-10-22

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Rong Zhang ,  Yan Zhang ,  Hongyuan Zhang

IPC: H04W24/08

CPC classification number: H04W24/08 ,  H04W84/12

Abstract: One example discloses a method of interference estimation for communications between WLAN (wireless local area network) devices, including: adding a set of interference estimation attributes to a PPDU; transmitting the PPDU from and receiving the PPDU at a WLAN device; and estimating a set of interference statistics, by the WLAN device, by comparing the set of interference estimation attributes to a corresponding set of predefined attribute values.

公开(公告)号：US20240098786A1

公开(公告)日：2024-03-21

申请号：US18242494

申请日：2023-09-05

Applicant: NXP USA, Inc.

Inventor： Kiseon Ryu ,  Liwen Chu ,  Rui Cao ,  Hongyuan Zhang

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W74/0866

Abstract: Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless relay device includes a wireless transceiver configured to receive, from a first wireless device, a first multi-station (STA) block acknowledgement (BA) frame, and a controller configured to generate a second multi-STA BA frame in response to the first multi-STA BA frame. The wireless transceiver is further configured to transmit the second multi-STA BA frame to a second wireless device.

公开(公告)号：US20230370859A1

公开(公告)日：2023-11-16

申请号：US18313879

申请日：2023-05-08

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Dong Wei ,  Christian Raimund Berger

IPC: H04W16/26

CPC classification number: H04W16/26 ,  H04W84/12

Abstract: One example discloses a relay device, including: a controller configured to receive an original WLAN (wireless local area network) standards compliant message signal, that includes an embedded WLAN message, from a receiver; wherein the controller is configured to command a transmitter to transmit a copy of the original WLAN message signal, if the original message signal or the embedded WLAN message has a set of predetermined attributes; and wherein the controller is configured to command the transmitter without decoding select portions of the embedded WLAN message.

公开(公告)号：US20220217027A9

公开(公告)日：2022-07-07

申请号：US17181935

申请日：2021-02-22

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Liwen Chu ,  Young Hoon Kwon ,  Hongyuan Zhang ,  SUDHIR SRINIVASA

IPC: H04L27/26 ,  H04L29/06 ,  H04L5/00

Abstract: One example discloses an IEEE 802.11 compliant wireless communications device, including: a processor configured to generate a hybrid-physical protocol data unit (hybrid-PPDU) that includes a set of sub-PPDUs; a first sub-PPDU in the set of sub-PPDUs includes a first preamble portion and a first data payload portion; a second sub-PPDU in the set of sub-PPDUs includes a second preamble portion and a second data payload portion; wherein an OFDMA communications signal includes a set of symbol tones divided into a set of resource units (RUs); wherein the processor is configured to map the first sub-PPDU to a first RU within the set of RUs, and map the second sub-PPDU to a second RU within the set of RUs; and wherein the first preamble portion corresponds to a first 802.11 packet format, and the second preamble portion corresponds to a second 802.11 packet format.

公开(公告)号：US20210336720A1

公开(公告)日：2021-10-28

申请号：US17240516

申请日：2021-04-26

Applicant: NXP USA, Inc.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Huiling Lou ,  Rui Cao

IPC: H04L1/00 ,  H04L5/00 ,  H04W28/20

Abstract: Various embodiments relate to a method performed by a first wireless device for bandwidth negotiation for frame exchange in a TXOP with a second wireless device, including: announcing by the first wireless device a channel puncture scheme indicating whether some 20 MHz channels covering a BSS operating bandwidth are punctured or not; transmitting a frame to the second wireless device indicating a bandwidth for the frame exchange; receiving a frame from the second wireless device indicating a negotiated bandwidth for the frame exchange; and exchanging frames with the second wireless device using the negotiated bandwidth.

公开(公告)号：US20210321388A1

公开(公告)日：2021-10-14

申请号：US17229340

申请日：2021-04-13

Applicant: NXP USA, INC.

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

IPC: H04W72/04 ,  H04L5/00

Abstract: Communications may be effected in a communications environment involving a plurality channels having disparate bandwidth and channel center frequency indexes. Communications are effected using first communications type with a first channel bandwidth and first channel center frequency index. Communications are also effected via a second communications type using a separate set of fields indicating a second channel bandwidth and a second channel center frequency index, the second channel bandwidth being different than the first channel bandwidth and the second channel center frequency index being different than the first channel center frequency index. The channel center frequency index and bandwidth communicated in each communication may utilize separate subfields.

公开(公告)号：US20210289386A1

公开(公告)日：2021-09-16

申请号：US17203383

申请日：2021-03-16

Applicant: NXP USA, Inc.

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

IPC: H04W28/02

Abstract: Various embodiments relate to a method performed by a first wireless device for announcing operating capabilities to a second wireless device, wherein the first wireless device and second wireless device support a first protocol and a second protocol, including: announcing by the first device original capabilities to the second device; receiving an announcement of capabilities from the second device; receiving frames from the second device in PHY Protocol Data Units (PPDUs) following the first protocol and the second protocol; announcing by the first device a change in its capabilities to the second device; and receiving frames from the second device in PPDUs transmitted using the changed capabilities following the first protocol and the second protocol, wherein the change in the capabilities includes a change in a one of a puncture parameter, bandwidth parameter, mode and coding scheme (MCS) parameter, and a number of simultaneous streams (Nss) parameter.