公开(公告)号：US11165892B2

公开(公告)日：2021-11-02

申请号：US16410962

申请日：2019-05-13

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Mingguang Xu ,  Yakun Sun

IPC: H04L29/06 ,  H04L27/26 ,  H04W84/12

Abstract: A first communication device generates a physical layer (PHY) preamble for a PHY data unit to be transmitted via a communication channel, the PHY data unit conforming to a first communication protocol. Generating the PHY preamble includes generating a legacy portion of the PHY preamble to include a legacy signal field, which is decodable by one or more second communication devices that conform to a second communication protocol to determine a duration of the PHY data unit. The PHY preamble is generated to also include a duplicate of the legacy signal field in the PHY preamble, wherein presence of the duplicate of the legacy signal field indicates to one or more third communication devices that conform to the first communication protocol that the PHY data unit conforms to the first communication protocol. The first communication device generates the PHY data unit to include the PHY preamble and a PHY payload.

公开(公告)号：US11134443B2

公开(公告)日：2021-09-28

申请号：US16264431

申请日：2019-01-31

Applicant: Marvell World Trade Ltd.

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

IPC: H04W52/02 ,  H04L29/06 ,  H04W48/16 ,  H04W52/54

Abstract: Embodiments described herein provide a method for creating a low power wake-up radio frame. The method comprises generating, at an access point, a wake-up radio frame for transmission to one or more client stations, determining whether the wake-up radio frame is to be transmitted inside or outside a basic service set associated with the access point, the basic service set having a basic service set identifier that is used to identify the access point. And in response to determining that the wake-up radio frame is to be transmitted outside the basic service set, computing, a target frame check sequence for the wake-up radio frame without using the basic service set identifier associated with the basic service set, appending the target frame check sequence to the wake-up radio frame; and transmitting, to one or more client stations, the wake-up radio frame with the appended target frame check sequence.

公开(公告)号：US11109314B2

公开(公告)日：2021-08-31

申请号：US16670893

申请日：2019-10-31

Applicant: Marvell World Trade Ltd.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Liwen Chu

IPC: H04W52/02 ,  H04L1/00 ,  H04L27/02 ,  H04W84/12

Abstract: A communication device in a wireless local area network (WLAN) generates a first portion of a wakeup radio (WUR) packet and a second portion of the WUR packet. The first portion of the WUR packet corresponds to a WLAN legacy physical layer (PHY) preamble. Generating the second portion of the WUR packet includes: generating the second portion of the WUR packet to include a WUR packet PHY sync signal. The WUR packet PHY sync signal corresponds to a sync bit sequence with each bit in the sync bit sequence modulated by a sync waveform. The second portion of the WUR packet is generated to also include a PHY data portion and a padding signal. The padding signal corresponds to a padding bit sequence with each bit in the padding bit sequence modulated by the sync waveform. The communication device transmits the WUR packet in the WLAN.

公开(公告)号：US11032118B2

公开(公告)日：2021-06-08

申请号：US16179320

申请日：2018-11-02

Applicant: Marvell World Trade Ltd.

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

IPC: H04L5/00 ,  H04L27/26 ,  H04W84/12

Abstract: In a method for wireless communication, a communication device selects a downclocking ratio for generating a physical layer (PHY) protocol data unit (PPDU) to be transmitted in a vehicular communication network. The communication device generates the PPDU i) according to the selected downclocking ratio, and ii) as a downclocked version of a PPDU format defined by one of a) the IEEE 802.11n Standard, b) the IEEE 802.11ac Standard, and c) the IEEE 802.11ax Standard. The communication device transmits the PPDU in the vehicular communication network.

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：US11012544B2

公开(公告)日：2021-05-18

申请号：US16561047

申请日：2019-09-05

Applicant: Marvell World Trade Ltd.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Prashant Sharma

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

Abstract: Communication apparatus includes a transceiver configured to transmit and receive signals over a wireless channel in accordance with both a first communication protocol and a second communication protocol. The second communication protocol is backward-compatible with the first communication protocol, and has a first variant having an extended communication throughput, which is greater than the nominal communication throughput of the first protocol, and a second variant having an extended range, which is greater than the nominal range of the first protocol. A communication controller generates data frames for transmission by the transceiver, including frame headers in a header format that is compatible both with the first communication protocol and with both the first and second variants of the second communication protocol. The header format defines first fields having respective first values provided to support the first variant and second fields having respective second values provided to support the second variant.

公开(公告)号：US10966227B2

公开(公告)日：2021-03-30

申请号：US16399517

申请日：2019-04-30

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Liwen Chu

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

Abstract: A method for wireless local area network (WLAN) communication by a first WLAN communication device is described. A first media access control (MAC) data unit is generated at the first WLAN communication device. The first MAC data unit is transmitted from the first WLAN communication device to a second WLAN communication device via a first WLAN communication channel having a first radio frequency (RF) bandwidth. A second MAC data unit is received at the first WLAN communication device from the second WLAN communication device via a second WLAN communication channel having a second RF bandwidth that does not overlap the first RF bandwidth. The second MAC data unit corresponds to an acknowledgment of the first MAC data unit from the second WLAN communication device.

公开(公告)号：US10959243B2

公开(公告)日：2021-03-23

申请号：US16557186

申请日：2019-08-30

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang

IPC: H04W72/08 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0452 ,  H04B7/06 ,  H04L25/03 ,  H04W84/12

Abstract: Embodiments described herein provide a method for resource unit signaling with reduced data bits in a wireless local area network. At a wireless transceiver, a data frame may be obtained for transmission. The data frame includes a first preamble portion and a second preamble portion compliant with a wireless local area network communication protocol. When an available resource unit for transmitting the data frame is less than an allowed bandwidth, the first preamble portion and the second preamble portion may be configured with resource unit signaling bits. When the available resource unit is greater than or equal to the allowed bandwidth, the resource unit may be virtually divided into a plurality of channels. At least one of the first preamble portion and the second preamble portion may be configured with a first number of bits representing a number of users spatially multiplexed on a channel from the plurality of channels.

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：US10805051B2

公开(公告)日：2020-10-13

申请号：US16162113

申请日：2018-10-16

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Liwen Chu

IPC: H04L5/00 ,  H04B1/00 ,  H04W84/12

Abstract: A single media access control (MAC) layer processor provides data to one or more baseband signal processors, which generate a plurality of baseband signals corresponding to the data provided by the MAC layer processor. The plurality of baseband signals includes at least a first baseband signal and a second baseband signal. The first baseband signal has a first frequency bandwidth and the second baseband signal has a second frequency bandwidth that is different than the first frequency bandwidth. The one or more baseband signal processors provide the plurality of baseband signals to a plurality of radio frequency (RF) radios for simultaneous wireless transmission via a plurality of RF segments.