公开(公告)号：US10517094B2

公开(公告)日：2019-12-24

申请号：US16154582

申请日：2018-10-08

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: An access point generates and transmits, to first client stations and a second client station, a downlink multi-user (MU) physical layer (PHY) data unit having respective media access control (MAC) data units for i) the first client stations and ii) the second client station. The downlink MU PHY data unit includes an indication that the first client stations are to acknowledge the downlink MU PHY data unit in an uplink MU PHY data unit, and indicates that the second client station is to acknowledge the downlink MU PHY data unit in another uplink PHY data unit separate from the uplink MU PHY data unit. The access point receives, from the multiple first client stations, the uplink MU PHY data unit, and polls the second client station to prompt the second client station to acknowledge, in another uplink PHY data unit, that the second client station received the downlink MU PHY data unit.

公开(公告)号：US10470219B2

公开(公告)日：2019-11-05

申请号：US15337749

申请日：2016-10-28

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang

IPC: H04W72/04 ,  H04W74/08 ,  H04L5/00 ,  H04W8/24 ,  H04W52/50 ,  H04W74/00

Abstract: A communication device receives a trigger frame that is configured to: trigger a contention-based uplink orthogonal frequency multiple access (OFDMA) transmission by multiple communication devices, and indicate a predetermined length of the contention-based uplink OFDMA transmission, wherein the predetermined length corresponds to contention-based uplink OFDMA transmissions. Responsive to receiving the trigger frame, the communication device generates a data unit having the predetermined length, and responsive to receiving the trigger frame, transmits the data unit as part of a contention-based uplink OFDMA transmission.

公开(公告)号：US10469297B2

公开(公告)日：2019-11-05

申请号：US16170919

申请日：2018-10-25

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang ,  Xiayu Zheng ,  Rui Cao ,  Mingguang Xu ,  Sudhir Srinivasa ,  Jie Huang

IPC: H04L27/00 ,  H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04B7/06

Abstract: A boundary within a last orthogonal frequency division multiplexing (OFDM) symbol of a PHY data unit is determined. Pre-encoder padding bits are added to a set of information bits to generate a set of padded information bits such that the set of padded information bits, after being encoded, fill one or more OFDM symbols up to the boundary within the last OFDM symbol. The set of padded information bits are encoded to generate a set of coded bits. A PHY preamble is generated to include a subfield that indicates the boundary. The one or more OFDM symbols are generated to include (i) the set of coded information bits in the one or more OFDM symbols up to the boundary to allow a receiving device to stop decoding the one or more OFDM symbols at the boundary, and (ii) post-encoder padding bits in the last OFDM symbol following the boundary.

公开(公告)号：US10455534B2

公开(公告)日：2019-10-22

申请号：US15958319

申请日：2018-04-20

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Hongyuan Zhang ,  Mao Yu ,  Su Khiong Yong ,  Sudhir Srinivasa

IPC: H04J3/06 ,  H04W56/00 ,  H04W64/00 ,  G01S11/02 ,  G01S13/76 ,  G01S5/06

Abstract: Timestamps associated with when transmissions are sent and received between a pair of communication devices are used to determine a distance between the pair of communication devices. The communication devices operate according to a wireless communication protocol, which specifies that a requester of a ranging measurement session is to compensate for a clock frequency offset between the pair of communication device and that a responder is not to compensate for the clock frequency offset. As part of the ranging measurement session, the responder sends feedback to the requester, where the feedback includes timestamps recorded by the responder. The timestamps in the feedback are not compensated for the clock frequency offset by the responder. After receiving the feedback, the requester compensates the timestamps in the feedback for the clock frequency offset before using the timestamps to calculate the distance between the pair of communication devices.

公开(公告)号：US20190296884A1

公开(公告)日：2019-09-26

申请号：US16435899

申请日：2019-06-10

Applicant: Marvell World Trade Ltd.

Inventor： Rui CAO ,  Hongyuan Zhang

IPC: H04L5/00 ,  H04W24/02 ,  H04W84/12 ,  H04W84/18 ,  H04W36/16 ,  H04W72/04

Abstract: A wireless communication device comprising processor electronics configured to select a channel bonding mode from a plurality of channel bonding modes. Each of the plurality of channel bonding modes indicates at least two wireless communication channels and at least one of the plurality of channel bonding modes corresponds to a mode that indicates a punctured wireless communication channel. The processor electronics are further configured to generate a frame to be transmitted from the wireless communication device in accordance with the selected channel bonding mode. The frame includes a preamble portion and a data portion and the preamble portion includes a first preamble field that identifies the selected channel bonding mode. Transceiver electronics are configured to transmit the frame on the wireless communication channels indicated by the selected channel bonding mode identified in the first preamble field.

公开(公告)号：US10411937B2

公开(公告)日：2019-09-10

申请号：US16370588

申请日：2019-03-29

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Yakun Sun ,  Mingguang Xu ,  Rui Cao ,  Hui-Ling Lou

IPC: H04L27/26 ,  H04L1/06 ,  H04L1/00 ,  H04L5/00 ,  H04W84/12

Abstract: A communication device generates a first portion of a physical layer (PHY) preamble of a PHY data unit to include a first plurality of orthogonal frequency division multiplexing (OFDM) symbols. Each OFDM symbol of the first plurality of OFDM symbols is generated with a first OFDM tone spacing. The communication device generate a second portion of the PHY preamble to include a second plurality of OFDM symbols. Each OFDM symbol of the second plurality of OFDM symbols is generated with a second OFDM tone spacing that is a fraction 1/N of the first OFDM tone spacing, where N is a positive integer greater than one. The communication device generates a PHY data portion of the PHY data unit to include one or more third OFDM symbols. Each third OFDM symbol is generated with the second OFDM tone spacing.

公开(公告)号：US10405325B2

公开(公告)日：2019-09-03

申请号：US16010895

申请日：2018-06-18

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang

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

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：US20190261418A1

公开(公告)日：2019-08-22

申请号：US16404119

申请日：2019-05-06

Applicant: Marvell World Trade Ltd.

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

IPC: H04W74/08 ,  H04W24/10 ,  H04W74/00

Abstract: A client station receives from an access point (AP) a downlink packet that includes a trigger frame that is configured to prompt the client station to transmit an uplink packet to the AP. The trigger frame includes an indication of whether the client station is required to perform a channel sensing procedure to determine if one or more subchannels are not idle prior to transmitting the uplink packet. In response to the trigger frame indicating that the client station is required to perform the channel sensing procedure: the client station does not transmit the uplink packet in response to determining that the one or more subchannels are not idle. In response to the trigger frame indicating that the client station is not required to perform the channel sensing procedure, the client station transmits the uplink packet without measuring the one or more energy levels in the one or more subchannels.

公开(公告)号：US10362152B2

公开(公告)日：2019-07-23

申请号：US16030436

申请日：2018-07-09

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Liwen Chu ,  Lei Wang

IPC: H04L29/08 ,  H04L5/00 ,  H04L29/06 ,  H04W72/04 ,  H04L1/00 ,  H04W74/06 ,  H04W84/12

Abstract: A first communication device receives, from a second communication device, a trigger frame. The first communication device generates a single-user (SU) physical layer (PHY) protocol data unit that includes a PHY protocol payload, wherein the PHY protocol payload include information other than information that acknowledges a previous transmission from the second communication device. In response to the trigger frame, the first communication device transmits the SU PHY protocol data unit to the second communication device, such that the SU PHY protocol data unit is transmitted prior to the first communication device transmitting any other PHY protocol data unit after receiving the trigger frame.

公开(公告)号：US10320551B2

公开(公告)日：2019-06-11

申请号：US15628535

申请日：2017-06-20

Applicant: Marvell World Trade Ltd.

Inventor： Rui Cao ,  Hongyuan Zhang

IPC: H04L5/00 ,  H04W24/02 ,  H04W36/16 ,  H04W72/04 ,  H04W84/12 ,  H04W84/18

Abstract: Systems and techniques relating to wireless communications are described. A transmitter for a wireless local area network (WLAN) identifies a channel bonding mode out of a number of channel bonding modes. The channel bonding mode includes two or more available channels used by the transmitter for data transmission in the WLAN, and the two or more available channels indicating at least one busy channel not used by the transmitter for data transmission. The channel bonding mode is signaled to a receiver using a bandwidth field of a legacy signal field that is duplicated across respective channels used in the WLAN, the legacy signal field being in a preamble portion of a frame. The frame is transmitted to the receiver, wherein the frame includes a data portion of the frame that occupies the two or more available channels according to the channel bonding mode.