公开(公告)号：US20240236731A9

公开(公告)日：2024-07-11

申请号：US18492273

申请日：2023-10-23

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：US20240155682A1

公开(公告)日：2024-05-09

申请号：US18388173

申请日：2023-11-08

Applicant: NXP USA, Inc.

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

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W84/12

Abstract: Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to generate an extended range request-to-send (ER-RTS) packet and a wireless transceiver configured to transmit the ER-RTS packet to a second wireless device to reserve a transmission channel.

公开(公告)号：US20230362996A1

公开(公告)日：2023-11-09

申请号：US18144595

申请日：2023-05-08

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Liwen Chu ,  Hongyuan Zhang

IPC: H04W74/08 ,  H04L5/00

CPC classification number: H04W74/0816 ,  H04L5/0053

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 source wireless device, communications data, and a controller configured to decode and forward the received communications data to at least one destination wireless device.

公开(公告)号：US11677498B2

公开(公告)日：2023-06-13

申请号：US17182091

申请日：2021-02-22

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Liwen Chu ,  Sudhir Srinivasa ,  Hongyuan Zhang ,  Prashant Sharma ,  Xiayu Zheng

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

CPC classification number: H04L1/0059 ,  H04L1/0003 ,  H04L1/0061 ,  H04L1/0069 ,  H04L1/0643 ,  H04W84/12

Abstract: Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method of wireless communications involves encoding bits in Extremely High Throughput (EHT) signaling fields of a packet corresponding to at least one of an Orthogonal Frequency-Division Multiple Access (OFDMA) mode, a non-OFDMA mode, and a Null Data Packet (NDP) mode, wherein EHT signaling fields include a Universal signal (U-SIG) field and an EHT signal (EHT-SIG) field, and transmitting the packet with encoded bits corresponding to at least one of the OFDMA mode, the non-OFDMA mode, and the NDP mode.

公开(公告)号：US11641253B2

公开(公告)日：2023-05-02

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：US11611417B2

公开(公告)日：2023-03-21

申请号：US17102656

申请日：2020-11-24

Applicant: NXP USA, Inc.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Sudhir Srinivasa

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/0453 ,  H04W80/02 ,  H04B7/0413

Abstract: A data unit comprising bits to transmit over one or more frequency segments in a frequency range is obtained. An effective bandwidth in each frequency segment of the frequency range is determined, where the effective bandwidth excludes bandwidth of one or more punctured subchannels in a respective frequency segment. Bits are encoded based on the effective bandwidth of each frequency segment followed by parsing the encoded bits to one or more streams and parsing the encoded bits of a stream to the one or more frequency segments. The parsing of the encoded bits of the stream comprises allocating a first number of consecutive encoded bits to a first frequency segment and allocating a second number of consecutive encoded bits to a second frequency segment, wherein the first number and the second number are based on the effective bandwidth of the first frequency segment and the second frequency segment. The encoded bits are modulated and mapped to subcarriers for transmission.

公开(公告)号：US11387936B2

公开(公告)日：2022-07-12

申请号：US16714366

申请日：2019-12-13

Applicant: NXP USA, Inc.

Inventor： Yan Zhang ,  Hongyuan Zhang ,  Rui Cao

IPC: H04L1/00 ,  H04L1/18

Abstract: A first communication device encodes, according to a non-rate-matching coding scheme, a set information bits to generate a set of coded bits, generates a first physical layer (PHY) data unit to include at least some of the coded bits, and transmits the first PHY data unit in an initial hybrid automatic repeat request (HARQ) transmission to a second communication device. Subsequently, in response to determining that the second communication device was not able to properly decode the set of coded bits based on the initial HARQ transmission, the first communication device selects a subset of the set of coded bits, the subset including some, but not all, coded bits that were included in the initial HARQ transmission, generates a second PHY data unit to include the subset of coded bits, and transmits the second PHY data unit in a HARQ retransmission to the second communication device.

公开(公告)号：US11381441B2

公开(公告)日：2022-07-05

申请号：US16527109

申请日：2019-07-31

Applicant: NXP USA, Inc.

Inventor： Sai-Wang Tam ,  Su Chenxin ,  Vijay Ahirwar ,  Rulin Huang ,  Alden C. Wong ,  Rui Cao ,  Sudhir Srinivasa ,  Alireza Razzaghi ,  Randy Tsang ,  Timothy J. Donovan

IPC: H04L27/26 ,  H04L25/03

Abstract: A millimeter-wave communication system includes a transmitter and a receiver. The transmitter is configured to be connected to a waveguide that is transmissive at millimeter-wave frequencies, the waveguide having a propagation parameter that varies with frequency at the millimeter-wave frequencies. The transmitter is configured to generate a millimeter-wave signal comprising multiple sub-carriers that are modulated with data, wherein each sub-carrier is modulated with a respective portion of the data and is subjected to only a respective fraction of a variation in the propagation parameter, and to transmit the millimeter-wave signal into a first end of the waveguide. The receiver is configured to receive the millimeter-wave signal from a second end of the waveguide, and to extract the data from the multiple sub-carriers.

公开(公告)号：US11357066B2

公开(公告)日：2022-06-07

申请号：US17005888

申请日：2020-08-28

Applicant: NXP USA, Inc.

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

IPC: H04W76/15 ,  H04W8/24 ,  H04W74/08 ,  H04W80/08

Abstract: Examples of wireless communication based on link use capabilities of multi-link devices is disclosed. A first multi-link device receives a first physical layer conformance procedure (PLCP) protocol data unit (PPDU) on a first link from a second multi-link device and transmits a second PPDU on the second link based on a link use capability of the second multi-link device and a backoff counter counting down to a predetermined value. A first multi-link device also transmits a PPDU on the first link and the second link at a same start time based on an link idle determination and the backoff counter counting down to a predetermined value.

公开(公告)号：US20220150958A1

公开(公告)日：2022-05-12

申请号：US17523805

申请日：2021-11-10

Applicant: NXP USA, Inc.

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

IPC: H04W74/08 ,  H04W80/02 ,  H04W72/12

Abstract: Embodiments of a device and a method for multi-link operations are disclosed. In an embodiment, a device includes a processor configured to perform a first backoff operation on a first link and a second backoff operation on a second link of a multi-link device (MLD) that has a non-simultaneous transmission and reception capability (NSTR MLD), and transmit a first Physical Layer Convergence Protocol (PLCP) Protocol Data Unit (PPDU) on the first link at a first start time after the first backoff operation and a second PPDU on the second link at a second start time after the second backoff operation.