公开(公告)号：US11025368B2

公开(公告)日：2021-06-01

申请号：US15595116

申请日：2017-05-15

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Sudhir Srinivasa ,  Mao Yu ,  Raja Banerjea

IPC: H04L1/00 ,  H04L27/26 ,  H04L29/06 ,  H04W28/06 ,  H04W84/12 ,  H04W99/00

Abstract: A preamble of a physical layer (PHY) data unit that conforms to a first communication protocol is generated. The preamble includes a legacy field that is formatted according to a second communication protocol, and a signal field having a first orthogonal frequency division multiplexing (OFDM) symbol and a second OFDM symbol. The first OFDM symbol (i) immediately follows the legacy field and (ii) is modulated using binary phase shift keying (BPSK) modulation, whereas a third communication protocol specifies that an OFDM symbol, defined by the third communication protocol, that immediately follows the legacy field is modulated using BPSK modulation rotated by 90 degrees (Q-BPSK). The second OFDM symbol (i) immediately follows the first OFDM symbol and (ii) is modulated using Q-BPSK to indicate to a receiver device that conforms to the first communication protocol that the data unit conforms to the first communication protocol.

公开(公告)号：US10952216B2

公开(公告)日：2021-03-16

申请号：US16526808

申请日：2019-07-30

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W72/04 ,  H04W74/08 ,  H04W8/24 ,  H04W56/00 ,  H04W40/24 ,  H04W80/02 ,  H04L1/00 ,  H04L29/06 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

Abstract: An access point generates a management communication frame, that includes information indicating network parameters of a wireless communication network, for transmission in an operating channel of the wireless communication network. The operating channel including i) at least one primary component channel used at least for synchronizing with client stations associated with the access point and ii) at least one scanning channel specified, by the first communication protocol, to be used for scanning by client stations not associated with the access point. The access point generates a physical layer data unit to include the management communication frame, and transmits the physical layer data unit in the at least one scanning channel, specified by the first communication protocol, to allow discovery of the wireless communication network by client stations that are not associated with the access point.

公开(公告)号：US10721026B2

公开(公告)日：2020-07-21

申请号：US16051211

申请日：2018-07-31

Applicant: Marvell World Trade Ltd.

Inventor： Jinjing Jiang ,  Liwen Chu ,  Yi-Ling Chao ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04L1/16 ,  H04L12/851 ,  H04L12/807 ,  H04L12/801 ,  H04L1/18 ,  H04W72/12 ,  H04W16/14 ,  H04W88/06 ,  H04W84/12

Abstract: A first communication device generates a block acknowledgement (BA) frame that includes (i) acknowledgement information to indicate, to a second communication device, whether the first communication device successfully received multiple media access control (MAC) frames transmitted by the second communication device, and (ii) an indication of a change in a BA session between the first communication device and the second communication device. The first communication device transmits the BA frame to the second communication device, where the BA frame causes the second communication device to adopt the change in the BA session in response to receiving the BA frame.

公开(公告)号：US10555245B2

公开(公告)日：2020-02-04

申请号：US15955449

申请日：2018-04-17

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Ken Kinwah Ho ,  Tianan Tim Ma ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W8/22 ,  H04W72/12 ,  H04W80/02 ,  H04W88/10 ,  H04W48/12 ,  H04W72/04 ,  H04W76/11 ,  H04W16/02

Abstract: A first communication device generates and transmits to a second communication device: first and second information elements that respectively indicate capabilities regarding physical layer protocol data units (PPDUs) conforming to a first communication protocol and a second communication protocol. The first communication device generates and transmits a MAC data unit that includes a number corresponding to a maximum number spatial streams supported by the first communication device. The number in the MAC data unit, and one or more of i) the first information element, ii) the second information element, and iii) other information in the MAC data unit, indicate first and second maximum numbers of spatial streams supported by the first communication device with respect to PPDUs conforming to the first communication protocol, and PPDUs conforming to the second communication protocol, respectively.

公开(公告)号：US10470185B2

公开(公告)日：2019-11-05

申请号：US15997033

申请日：2018-06-04

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Lei Wang ,  Hui-Ling Lou ,  Jinjing Jiang

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/0452 ,  H04L27/26 ,  H04W84/12

Abstract: A first communication device generates respective media access control (MAC) protocol data units (MPDUs) that include respective data for a respective second communication devices, and determines respective resource units (RUs) via which at least some of the second communication devices are to transmit as part of an uplink (UL) orthogonal frequency division multiple access (OFDMA) physical layer (PHY) transmission to respectively acknowledge receipt of the respective MPDUs. The first communication device generates respective control frames that are configured to prompt the at least some of the second communication devices to transmit the UL OFDMA PHY transmission, and that include indicators of the RUs via which the at least some of the second communication devices are to transmit as part of the UL OFDMA PHY transmission. The first communication device generates and transmits a single multi user (MU) PHY data unit that includes i) the MPDUs, and ii) the control frames.

公开(公告)号：US20190334674A1

公开(公告)日：2019-10-31

申请号：US16386319

申请日：2019-04-17

Applicant: Marvell World Trade Ltd.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Xiayu Zheng ,  Hui-Ling Lou

IPC: H04L5/00 ,  H04W72/04 ,  H04W4/40

Abstract: A method for communication over a wireless interface between transceivers that are moving with respect to each other. The method includes transmitting, by a communication station (STA) in a moving vehicle over a wireless channel to a receiver outside the vehicle, a sequence of data symbols encoded in accordance with a frequency-domain multiplexing scheme extending over a range of sub-carrier tones. A condition affecting the wireless channel is evaluated. Responsively to the evaluated condition, a pilot scheme is selected from among a plurality of available pilot schemes, for interleaving of pilot signals in specified sub-carrier tones of the data symbols. An indication of the selected pilot scheme is exchanged between the STA and the receiver. The pilot signals are interleaved in the transmitted data symbols in accordance with the selected pilot scheme.

公开(公告)号：US10440598B2

公开(公告)日：2019-10-08

申请号：US15469274

申请日：2017-03-24

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Sagar Tamhane ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W24/10 ,  H04B17/24 ,  H04W24/08 ,  H04W56/00 ,  G01S5/00 ,  H04W64/00

Abstract: A first communication device generates a range measurement packet (or a packet that includes a probe response frame, a TIM frame, etc.) associated with a range measurement signal exchange session between the first communication device and a second communication device. The first communication device records a time value of a first timer corresponding to a time of transmission of the packet, and includes timing information corresponding to the recorded time value in the packet. The first communication device transmits the packet to the second communication device. The timing information in the packet is useable by a third communication device to adjust time values corresponding to a second timer, which the third communication device includes.

公开(公告)号：US10390328B2

公开(公告)日：2019-08-20

申请号：US15144543

申请日：2016-05-02

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Lei Wang ,  Yakun Sun ,  Jinjing Jiang ,  Hui-Ling Lou

IPC: H04W72/00 ,  H04L5/00 ,  H04L12/18 ,  H04W72/04 ,  H04L27/26 ,  H04W4/06 ,  H04W84/12 ,  H04W16/28

Abstract: A beamforming training packet is transmitted from a first communication device to multiple second communication devices. A trigger frame is generated at the first communication device to trigger an uplink orthogonal frequency division multiple access (OFDMA) transmission of beamforming training feedback from at least some of the multiple second communication devices. After transmission of the beamforming training packet by the first communication device, the trigger frame is transmitted to the at least some of the multiple communication devices. The uplink OFDMA transmission is then received at the first communication device. The uplink OFDMA transmission includes respective beamforming training feedback packets generated based on the beamforming training packet by respective ones of the at least some of the multiple second communication devices. The respective beamforming training feedback packets are simultaneously transmitted by the at least some of the multiple second communication devices.

公开(公告)号：US10375695B2

公开(公告)日：2019-08-06

申请号：US15710640

申请日：2017-09-20

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Lei Wang ,  Jinjing Jiang ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W72/04 ,  H04L5/00 ,  H04W52/36 ,  H04W52/50 ,  H04W72/12 ,  H04W52/24 ,  H04W16/14 ,  H04W52/16 ,  H04W84/12 ,  H04W52/22 ,  H04W74/08

Abstract: A first communication device in a first wireless network determines a transmit power for transmitting a first packet during a spatial reuse opportunity corresponding to a transmission in a second wireless network. Determining the transmit power includes using a spatial reuse parameter, indicative of an acceptable interference level in the second wireless network, included in a second packet transmitted by a second communication device in the second wireless network. The first communication device generates the first packet to include information to indicate to a third communication device, that is an intended receiver of the first packet, to not transmit an acknowledgment of the first packet according to a normal acknowledgment procedure during the spatial reuse opportunity. The first communication device transmits the first packet at the determined transmit power, and receives the acknowledgement from the third communication device, the acknowledgement having not been transmitted according to the normal acknowledgment procedure.

公开(公告)号：US20190230197A1

公开(公告)日：2019-07-25

申请号：US16226174

申请日：2018-12-19

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Lei Wang ,  Hui-Ling Lou

IPC: H04L29/06 ,  H04L27/26 ,  H04W4/70

Abstract: Embodiments described herein provides a system for detecting data received in a low power low rate (LPMR) data frame format. The system includes a receiver and control circuitry. The receiver is configured to receive a data frame comprising an LPLR preamble portion and an LPLR data portion following the LPLR preamble portion. The LPLR preamble portion and the LPLR data portion occupy a bandwidth that is less than an allowed bandwidth. The control circuitry is configured to determine a mode of the data frame based on whether the data frame has an additional portion, and detect data field in the LPLR preamble portion from the data frame based on the mode of the data frame.