公开(公告)号：US10153857B1

公开(公告)日：2018-12-11

申请号：US15096050

申请日：2016-04-11

Applicant: Marvell International Ltd.

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

IPC: H04J11/00 ,  H04W72/04 ,  H04L5/00 ,  H04W84/12

Abstract: A method for simultaneous communication in a wireless local area network is described. A first control frame is transmitted by a first communication device to a plurality of communication devices, is duplicated across each of a plurality of sub-channels of an orthogonal frequency division multiplexing channel, and indicates that the communication devices are requested to simultaneously transmit respective control frames to the first communication device. Respective control frames are received, including second and third control frames from second and third communication devices, respectively, that are transmitted via a same sub-channel having a smallest bandwidth of the wireless local area network and indicate that at least some of the plurality of sub-channels are available. One of an orthogonal frequency division multiple access data unit and a duplicated legacy data unit is transmitted by the first communication device in response to the control frames via the available sub-channels.

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：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.

公开(公告)号：US09867185B1

公开(公告)日：2018-01-09

申请号：US14558873

申请日：2014-12-03

Applicant: Marvell International LTD.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04W72/04 ,  H04W84/12

CPC classification number: H04W72/0453 ,  H04W84/12 ,  H04W88/06

Abstract: A first network device including a radio frequency (RF), baseband, and medium access control (MAC) modules. The RF module: based on a predetermined primary mode, selects a first band from bands including a sub-1 GHz, IEEE 802.11ah, and IEEE 802.11af bands; in the first band, receives a radio or intermediate frequency signal; and converts the radio or intermediate frequency signal to a baseband signal. The baseband module: based on the primary mode, selects a secondary mode and a first bandwidth from multiple bandwidths, where the secondary mode has a corresponding data rate and the bandwidths include a bandwidth downclocked from an IEEE 802.11ac or 1 MHz bandwidth; receives the baseband signal from the RF module, where the baseband signal has the first bandwidth; and based on the baseband signal, outputs a frame included in the baseband signal. The MAC module receives the frame from the baseband module at the data rate.

公开(公告)号：US09559722B1

公开(公告)日：2017-01-31

申请号：US14706335

申请日：2015-05-07

Applicant: Marvell International LTD.

Inventor： Jie Huang ,  Hui-Ling Lou ,  Leilei Song

IPC: H03M13/03 ,  H03M13/11 ,  H03M13/00

CPC classification number: H03M13/118 ,  H03M13/036 ,  H03M13/116 ,  H03M13/616 ,  H03M13/6362 ,  H03M13/6527

Abstract: A network device including a matrix generating module, an encoding module and a transceiver. The matrix generating module is configured to generate or access a code base matrix, wherein the code base matrix has a corresponding code rate of 7/8. The matrix generating module is also configured to, based on the code base matrix, generate a resultant matrix of a low-density parity-check code. The resultant matrix includes sub-matrices. Each of the sub-matrices is generated based on a respective element in the code base matrix. The resultant matrix has a code length of 648 or 1296. The encoding module is configured to encode data based on the resultant matrix. The transceiver is configured to transmit the encoded data.

Abstract translation: 一种包括矩阵生成模块，编码模块和收发器的网络设备。 矩阵生成模块被配置为生成或访问码基矩阵，其中码基矩阵具有7/8的对应码率。 矩阵生成模块还被配置为基于码基矩阵来生成低密度奇偶校验码的合成矩阵。 所得到的矩阵包括子矩阵。 基于代码库矩阵中的相应元素生成每个子矩阵。 所得到的矩阵具有648或1296的代码长度。编码模块被配置为基于所得到的矩阵对数据进行编码。 收发器被配置为发送编码数据。