公开(公告)号：US10148412B1

公开(公告)日：2018-12-04

申请号：US15193991

申请日：2016-06-27

Applicant: Marvell International Ltd.

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

IPC: H04L7/00 ,  H04L29/06 ,  H04L5/00 ,  H04W88/12

Abstract: A controller of a first communication device records a first time value of a first clock corresponding to transmission of a first communication frame associated with a timing measurement procedure. If an acknowledgment of the first communication frame was received by the first communication device, the controller records a second time value of the first clock. The controller receives a data unit corresponding to a second communication frame associated with the timing measurement procedure, wherein the data unit includes a time value of a second clock. If an acknowledgment of the first communication frame was not received, the controller compares the first time value of the first clock to the time value of the second clock, and uses i) the first time value of the first clock, and ii) the time value of the second clock to adjust time values corresponding to the first clock responsive to the comparison.

公开(公告)号：US10034227B1

公开(公告)日：2018-07-24

申请号：US15374066

申请日：2016-12-09

Applicant: Marvell International Ltd.

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

IPC: H04L1/00 ,  H04W48/12 ,  H04W72/04 ,  H04L5/00 ,  H04W84/12 ,  H04W88/08 ,  H04W72/12

Abstract: In aspects of access point association using trigger-based uplink single user transmission, a wireless network system includes a station device that detects an initial trigger frame communicated in the wireless network system, and the station device can communicate an association request to an access point to join the wireless network system. The access point can receive the association request from the station device and generate an association response as an acknowledgement to the association request. The acknowledgement aggregates an association response frame that includes an association identifier for the station device and a unicast trigger frame to initiate a trigger-based uplink single user (UL-SU) transmission from the station device. The access point can then communicate the acknowledgement to the station device.

公开(公告)号：US10009736B1

公开(公告)日：2018-06-26

申请号：US14639477

申请日：2015-03-05

Applicant: Marvell International LTD.

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

IPC: H04W4/06 ,  H04L12/741 ,  H04L29/06 ,  H04W12/04 ,  H04W40/02 ,  H04W56/00

CPC classification number: H04W4/06 ,  H04L45/74 ,  H04L63/0428 ,  H04W12/001 ,  H04W12/04 ,  H04W12/0401 ,  H04W40/02 ,  H04W56/0015 ,  H04W84/12

Abstract: A first access point including a physical layer (PHY) module, a parameter module and a medium access control (MAC) module. The parameter module is configured to, via the PHY module, negotiate a first parameter with a second access point. A basic service set of the first access point overlaps a basic service set of the second access point. The first basic service set includes stations. The second basic service set includes one or more of the stations. The MAC module is configured to receive a first frame. The PHY module is configured to, based on the first parameter and during a joint transmission of the first frame by the first access point and the second access point, transmit the first frame to the stations according to a first address while the second access point transmits the first frame to the one or more stations according to the first address.

公开(公告)号：US09999009B1

公开(公告)日：2018-06-12

申请号：US14992849

申请日：2016-01-11

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Sudhir Srinivasa

IPC: H04W4/00 ,  H04W56/00 ,  H04L1/00 ,  H04B7/0413 ,  H04W72/12

CPC classification number: H04W56/0005 ,  H04B7/0413 ,  H04L1/0004 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/261 ,  H04L29/10 ,  H04W28/18 ,  H04W72/1278 ,  H04W72/1289 ,  H04W84/12

Abstract: A synchronization data unit is generated by an access point. The synchronization data unit is for scheduling subsequent simultaneous transmission of a plurality of data units by multiple communication devices. An estimate of a MIMO communication channel is generated using a plurality of training fields included in a first portion of a signal, wherein the signal corresponds to the plurality of data units transmitted simultaneously from the respective communication devices via respective sets of sets of spatial streams. Data in a second portion of the signal is decoded using the estimate of the MIMO communication channel, wherein the data in the second portion of the signal corresponds to data included in the plurality of data units.

公开(公告)号：US09979569B1

公开(公告)日：2018-05-22

申请号：US15611656

申请日：2017-06-01

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Mingguang Xu ,  Hongyuan Zhang

IPC: H04L25/03 ,  H04W84/12

CPC classification number: H04L25/03171 ,  H04L25/03012 ,  H04L25/061

Abstract: Systems and techniques relating to repeated signal detection are described. A described technique includes receiving a signal including first and second portions, the first portion includes first and second symbols; performing a determination, based on a first decision metric component and a second decision metric component, of whether the second symbol is a repeated version of the first symbol, the first decision metric component contributing to the determination that the second symbol is the repeated version of the first symbol, and the second decision metric component contributing to the determination that the second symbol is not the repeated version of the first symbol; and decoding the second portion of the signal in accordance with a first format or a second format. The first format is used if the first symbol is not repeated. The second format is used if the first symbol is repeated.

公开(公告)号：US09967127B1

公开(公告)日：2018-05-08

申请号：US15486154

申请日：2017-04-12

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Yan Zhang ,  Sudhir Srinivasa

IPC: H04L27/36 ,  H04L27/34

CPC classification number: H04L27/362 ,  H04L27/34 ,  H04L27/3405

Abstract: The present disclosure includes systems and techniques relating to an integer non-uniform constellation (NUC) high-order M-QAM. In some implementations, a scale factor is identified for a mapping of bit patterns into M constellation points of a NUC M-QAM, wherein M is no less than 1024; each of the M constellation points has respective real and imaginary coordinates; and the respective real and imaginary coordinates having respective decimal parts that are integer multiples of 2−n, with n being a non-negative integer less than 5. A bit pattern is received and mapped to integer real and imaginary coordinates of one of the M constellation points according to a mapping rule of the NUC M-QAM. The integer real and imaginary coordinates of the one of the M constellation points equal the scale factor multiplied with respective real and imaginary coordinates of the one of the M constellation points having respective decimal parts.

公开(公告)号：US09942010B1

公开(公告)日：2018-04-10

申请号：US14960151

申请日：2015-12-04

Applicant: Marvell International Ltd.

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

IPC: H04Q7/00 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0007 ,  H04L5/003 ,  H04L5/0055 ,  H04W72/02 ,  H04W74/085

Abstract: Methods and systems are disclosed for performing contention based uplink (UL) orthogonal frequency division multiple access (OFDMA). The method may include receiving, from an access point using a channel, a first signal including an indication of a first time and a plurality of sub-channels of the channel. The method may include modifying a counter value in response to determining that the first time has been reached. The method may include selecting a sub-channel of the plurality of sub-channels in response to determining the counter value is equal to a threshold value. The method may include transmitting a second signal to the access point using the sub-channel. The methods and systems disclosed herein may be used by stations to associate with the access point.

公开(公告)号：US09935794B1

公开(公告)日：2018-04-03

申请号：US14667448

申请日：2015-03-24

Applicant: Marvell International Ltd.

Inventor： Rui Cao ,  Xiayu Zheng ,  Hongyuan Zhang ,  Hui-Ling Lou ,  Liwen Chu ,  Yakun Sun

IPC: H04W52/54 ,  H04L27/26 ,  H04L25/02 ,  H04B7/0413 ,  H04W56/00

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04W56/0035

Abstract: A method for use in a communication network is described. A plurality of data frames, transmitted simultaneously from respective ones of a plurality of second communication devices, are received at a first communication device via a multiple input, multiple output (MIMO) communication channel. A common carrier frequency offset (CFO) that is common to the data frames is estimated based on a legacy portion of a physical layer (PHY) preamble of the data frames. Each data frame is compensated based on the common CFO. Respective device-specific CFOs are estimated for channel estimation of the MIMO communication channel based on pilot tones of respective non-legacy training field portions of the data frames. The pilot tones have a non-overlapping allocation to the plurality of second communication devices and each device-specific CFO is specific to the corresponding second communication device. The respective non-legacy training field portions are compensated based on the corresponding device-specific CFO.

公开(公告)号：US09913208B1

公开(公告)日：2018-03-06

申请号：US14642891

申请日：2015-03-10

Applicant: MARVELL INTERNATIONAL LTD.

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

IPC: H04W48/16 ,  H04W24/08 ,  H04W64/00

CPC classification number: H04W48/16 ,  G01S5/00 ,  G01S5/02 ,  G01S5/14 ,  H04W24/08 ,  H04W64/00

Abstract: Apparatus, methods, and other embodiments associated with obtaining schedule information to support snoop ranging are described. According to one embodiment, a method is performed by a station device on a computer network and includes establishing a network association with a network device of the computer network. The method also includes receiving schedule information from the network device without having to previously transmit to the network device to initiate acquisition of the schedule information. The schedule information is negotiated between other network devices communicating in the computer network, or between the network device and at least one of the other network devices. The schedule information is communicated to the network device and specifies timing associated with a ranging exchange between the other network devices, or between the network device and at least one of the other network devices, and may be used by the station device for snooping.

公开(公告)号：US09883472B1

公开(公告)日：2018-01-30

申请号：US14693744

申请日：2015-04-22

Applicant: Marvell International Ltd.

Inventor： Sagar A. Tamhane ,  Paul A. Lambert ,  Binh Quoc Tran ,  Sarang Shrikrishna Wagholikar ,  Liwen Chu ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W84/20 ,  H04W56/00 ,  H04W4/08 ,  H04L29/08 ,  G01S5/00 ,  H04W40/38 ,  H04W40/24

CPC classification number: H04W56/001 ,  G01S5/0036 ,  H04L29/08306 ,  H04L29/08441 ,  H04L67/1044 ,  H04L67/1048 ,  H04W4/08 ,  H04W40/244 ,  H04W40/38 ,  H04W84/20

Abstract: The present disclosure describes methods and apparatus for beaconing within a wireless network based on an indication of distance. For certain example embodiments, in a wireless network in which a master device is a device configured to transmit a beacon within the wireless network, a first wireless communication device may determine, based on an indication of distance between two wireless communication devices, if the first wireless communication device is to act as a master device. For example, a wireless signal may be received. Based at least partially on the received wireless signal, an indication of distance between two wireless communication devices in a wireless network may be obtained. And based at least partially on the obtained indication of distance between the two wireless communication devices, it may be determined if a first wireless communication device is to act as a master device within the wireless network.