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：US10285202B2

公开(公告)日：2019-05-07

申请号：US15178307

申请日：2016-06-09

Applicant: MARVELL WORLD TRADE LTD.

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

IPC: H04W24/10 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12 ,  H04W88/10

Abstract: A first communication device determines whether the first communication device is to use a first channel access mode or a second channel access mode for accessing a communication channel when the first communication device is triggered for uplink transmission by a second communication device. The first communication device receives a trigger frame from the second communication device. The first communication device transmits, to the second communication device, a data unit triggered by the trigger frame, including using the determined one of the first channel access mode or the second channel access mode to gain access to the communication channel.

公开(公告)号：US10027449B2

公开(公告)日：2018-07-17

申请号：US14956947

申请日：2015-12-02

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Liwen Chu ,  Lei Wang ,  Jinjing Jiang ,  Mingguang Xu

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: A first signal field to be included in a preamble of a physical layer (PHY) data unit is generated. The first signal field includes formatting information for a second signal field to be included in the PHY data unit. The formatting information includes an indication of a number of orthogonal frequency division multiplexing (OFDM) symbols in the second signal field. The second signal field is generated according to the formatting information in the first signal field. The second signal field includes formatting information for a data portion of the PHY data unit. The data portion is generated according to the formatting information in the second signal field. The preamble is generated to include at least the first signal field and the second signal field, The PHY data unit is generated to include the preamble and the data portion.

公开(公告)号：US10021224B2

公开(公告)日：2018-07-10

申请号：US15372146

申请日：2016-12-07

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

CPC classification number: H04L69/324 ,  H04L1/0029 ,  H04L1/003 ,  H04L1/16 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0094 ,  H04L69/22 ,  H04L69/323 ,  H04W72/044 ,  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：US10014992B2

公开(公告)日：2018-07-03

申请号：US15702812

申请日：2017-09-13

Applicant: Marvell World Trade Ltd.

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

IPC: H04L1/00 ,  H04L5/00 ,  H04L25/12 ,  H04L27/26 ,  H04W84/12 ,  H04L27/12

CPC classification number: H04L5/0007 ,  H04L1/0042 ,  H04L1/0059 ,  H04L5/0044 ,  H04L27/12 ,  H04L27/2613 ,  H04W84/12

Abstract: A method for generating a physical layer (PHY) data unit includes generating a first signal field to include multiple copies of first signal field content, wherein the first signal field content spans one sub-band of a plurality of sub-bands of the PHY data unit, and wherein the multiple copies collectively span the plurality of sub-bands of the PHY data unit; generating a second signal field to include multiple copies of second signal field content, wherein the second signal field content spans multiple ones of the plurality of sub-bands of the PHY data unit, and wherein the multiple copies of the second signal field collectively span the plurality of sub-bands of the PHY data unit; generating a preamble of the PHY data unit to include at least the first signal field and the second signal field; generating the PHY data unit to include at least the preamble.

公开(公告)号：US10014917B2

公开(公告)日：2018-07-03

申请号：US15380795

申请日：2016-12-15

Applicant: Marvell World Trade Ltd.

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

IPC: H04B7/04 ,  H04W28/02 ,  H04W72/12 ,  H04B7/0452 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/0091 ,  H04W28/0231 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/121 ,  H04W72/1289 ,  H04W84/12

Abstract: In a method for communicating in a wireless communication network a trigger frame is generated to trigger simultaneous uplink transmissions by multiple communication devices. The trigger frame includes a padding portion having a length determined based on respective time duration requirements of the multiple communication devices, the respective time duration requirements for preparing uplink transmission by the corresponding second communication devices. The trigger frame is transmitted to the multiple communication devices. The simultaneous uplink transmissions, triggered by the trigger frame, are received from the multiple communication devices.

公开(公告)号：US09832059B2

公开(公告)日：2017-11-28

申请号：US14728802

申请日：2015-06-02

Applicant: Marvell World Trade Ltd.

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

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

CPC classification number: H04L27/2627 ,  H04L5/0048 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2675 ,  H04W84/12

Abstract: In a method for generating a data unit for transmission via a communication channel, the data unit conforming to a first communication protocol, one or more orthogonal frequency division multiplexing (OFDM) symbols of the data unit are generated. Each OFDM symbol of the one or more OFDM symbols (i) occupies a first bandwidth, (ii) is generated with a first tone spacing, and (iii) includes a set of pilot tones. The first tone spacing is a fraction 1/N of a second tone spacing, the second tone spacing defined for the first bandwidth by a second communication protocol. The set of pilot tones includes a same number of pilot tones as defined for the first bandwidth by the second communication protocol. The data unit is generated to include the one or more OFDM symbols in a data portion of the data unit.

公开(公告)号：US09794044B2

公开(公告)日：2017-10-17

申请号：US14863208

申请日：2015-09-23

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang

IPC: H04W72/02 ,  H04L5/00 ,  H04W72/04 ,  H04B7/0452 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0037 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/2627 ,  H04W72/04 ,  H04W84/12

Abstract: A method for generating an orthogonal frequency division multiplex (OFDM) data unit conforming to a first communication protocol for transmission via a communication channel is described. A first field is generated that conforms to a second communication protocol and has an integer number of OFDM symbols LN having a periodicity LP. A second field is generated that conforms to the first communication protocol, has an integer number of OFDM symbols HN having a periodicity HP, and is based on a frequency sequence having non-zero values at an integer interval K. The first and second fields are modulated using a tone spacing LTS and a tone spacing HTS, respectively. LTS is a multiple M of HTS. The OFDM data unit is generated to include a preamble including the first and second fields. The second field is generated such that HP is proportional to LP and K and inversely proportional to M.

公开(公告)号：US20170118315A1

公开(公告)日：2017-04-27

申请号：US15332531

申请日：2016-10-24

Applicant: Marvell World Trade Ltd.

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

IPC: H04L29/06 ,  H04W4/00

CPC classification number: H04L69/22 ,  H04L27/2613 ,  H04W4/70 ,  H04W72/0453 ,  H04W72/0473 ,  H04W84/12 ,  Y02D70/142

Abstract: Embodiments described herein provides a system for detecting data received in a low power low rate (LPLR) 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 a data field in the LPLR preamble portion from the data frame based on the mode of the data frame.