-
公开(公告)号：US20130244586A1
公开(公告)日：2013-09-19
申请号：US13892811
申请日：2013-05-13
Applicant: MARVELL WORLD TRADE LTD.
Inventor： Rohit Nabar , Hui-Ling Lou
IPC: H04W72/12
CPC classification number: H04W72/1226 , H04L25/0206 , H04L25/0226 , H04L27/2613
Abstract: A first network device including a first calibration module to generate training signals for each of a plurality of subcarriers. The training signals are transmitted from the first network device to a second network device via antennas of the first network device using the subcarriers. A first steering module receives a first matrix for each subcarrier, which includes channel state information for each of the training signals received by the second network device, from the second network device according to a transmission schedule and generates a steering matrix based on the first matrix. The transmission schedule is predetermined or is transmitted to the second network device prior to transmitting the training signals. A first control module adjusts, based on the steering matrix, first beamforming weights associated with the antennas to direct first radio frequency signals to be transmitted toward the second network device.
Abstract translation: 一种第一网络设备，包括用于为多个子载波中的每一个生成训练信号的第一校准模块。 训练信号通过使用子载波的第一网络设备的天线从第一网络设备发送到第二网络设备。 第一转向模块根据传输调度从第二网络设备接收每个子载波的第一矩阵，其包括由第二网络设备接收的每个训练信号的信道状态信息，并且基于第一矩阵生成导引矩阵 。 在发送训练信号之前，传输调度是预定的或者被发送到第二网络设备。 第一控制模块基于导向矩阵来调整与天线相关联的第一波束赋形权重，以将第一射频信号引导到第二网络设备。
-
公开(公告)号：US20130242968A1
公开(公告)日：2013-09-19
申请号：US13888223
申请日：2013-05-06
Applicant: MARVELL WORLD TRADE LTD.
Inventor： Hongyuan Zhang , Rohit U. Nabar , Manyuan Shen , Songping Wu , Hui-Ling Lou , Yong Liu
IPC: H04W16/28
CPC classification number: H04W16/28 , H04L25/03343 , H04L27/2613 , H04L2025/03426 , H04L2025/03789 , H04L2025/03815
Abstract: A beamforming training (BFT) data unit for transmission via a communication channel in a wireless personal area network is generated, and in particular, is for transmitting beamforming training information. A physical layer header and first BFT data are encoded using block encoding to generate a first block. Second BFT data are encoded using block encoding to generate a second block. The BFT data unit is generated with a fixed-length payload, such that the BFT data unit includes only i) a preamble, ii) the first block, and iii) the second block.
Abstract translation: 生成用于通过无线个域网中的通信信道传输的波束形成训练（BFT）数据单元，特别是用于发送波束成形训练信息。 使用块编码对物理层报头和第一BFT数据进行编码以生成第一块。 使用块编码对第二BFT数据进行编码以生成第二块。 生成具有固定长度有效载荷的BFT数据单元，使得BFT数据单元仅包括i）前置码，ii）第一块，以及iii）第二块。
-
公开(公告)号：US11006416B2
公开(公告)日：2021-05-11
申请号：US16262355
申请日：2019-01-30
Applicant: Marvell World Trade Ltd.
Inventor： Liwen Chu , Lei Wang , Hongyuan Zhang , Yakun Sun , Jinjing Jiang , Hui-Ling Lou
Abstract: A first communication device allocates respective portions of a communication channel, that includes at least one primary component channel and one or more non-primary component channels, to a plurality of second communication devices, including a bandwidth-limited second communication device configured to operate with a maximum bandwidth that is less than a full bandwidth of the communication channel. The bandwidth-limited second communication device is operating in a particular component channel, and allocation of a frequency portion to the bandwidth-limited second communication device is restricted to the particular component channel. The first communication device transmits a data unit that includes one or both of: respective data for the second communication devices in the respective frequency portions allocated to the respective second communication devices, and one or more trigger frames to prompt transmission of respective data by the second communication devices in the respective frequency portions allocated to the respective second communication devices.
-
公开(公告)号：US10959229B2
公开(公告)日：2021-03-23
申请号：US16526753
申请日：2019-07-30
Applicant: Marvell World Trade Ltd.
Inventor： Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
IPC: H04W74/08 , H04W72/04 , H04W8/24 , H04W56/00 , H04W40/24 , H04W80/02 , H04L1/00 , H04L29/06 , H04L5/00 , H04L27/26 , H04W84/12
Abstract: A communication device generates a first data unit that spans a first bandwidth, and transmits the first data unit during a transmit opportunity (TXOP) to at least one other communication device. The communication device subsequently determines, based on respective values of TXOP duration fields included in respective physical layer (PHY) preambles of one or more data units previously transmitted during the TXOP, whether a second bandwidth of a second data unit to be transmitted by the communication device during the TXOP can be greater than the first bandwidth of the first data unit. In response to determining that the second bandwidth of the second data unit can be greater than the first bandwidth of the first data unit, the communication device generates the second data unit to span the second bandwidth greater than the first bandwidth, and transmits the second data unit during the TXOP.
-
公开(公告)号：US20200037325A1
公开(公告)日：2020-01-30
申请号：US16526808
申请日：2019-07-30
Applicant: Marvell World Trade Ltd.
Inventor： Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
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.
-
Patent Agency Ranking
公开(公告)号：US10511471B2
公开(公告)日：2019-12-17
申请号：US16126678
申请日：2018-09-10
Applicant: Marvell World Trade Ltd.
Inventor： Hongyuan Zhang , Yakun Sun , Hui-Ling Lou , Liwen Chu
IPC: H04B17/24 , H04L27/26 , H04W4/08 , H04L5/00 , H04W72/08 , H04B17/318 , H04B17/336 , H04B7/06 , H04W72/04 , H04W84/12
Abstract: A first communication device transmits a null data packet (NDP) to multiple second communication devices. The NDP spans a channel frequency bandwidth. The first communication device receives a plurality of sounding feedback packets from the second communication devices. Each sounding feedback packet includes one or more signal-to-noise ratio (SNR) indicators corresponding to one or more respective groups of orthogonal frequency division multiplexing (OFDM) subcarriers, and the SNR indicators correspond to reception of the NDP at the plurality of second communication devices. Each sounding feedback packet in the plurality of sounding feedback packets includes a respective indication of OFDM subcarriers for which the sounding feedback packet includes SNR information, and at least one sounding feedback packet from among the plurality of sounding feedback packets does not include SNR information for all OFDM subcarriers via which the NDP was transmitted.
-
公开(公告)号：US10454626B2
公开(公告)日：2019-10-22
申请号：US15669884
申请日：2017-08-04
Applicant: Marvell World Trade Ltd.
Inventor： Liwen Chu , Lei Wang , Jinjing Jiang , Hongyuan Zhang , Hui-Ling Lou
IPC: H04L1/18 , H04L1/16 , H04L27/26 , H04W72/04 , H04W28/06 , H04W28/08 , H04L1/08 , H04L5/00 , H04W84/12 , H04L1/00
Abstract: A first medium access control (MAC) service data unit (MSDU), intended for a communication device of multiple communication devices, is divided into a plurality of fragments. First and second groups of MAC protocol data units (MPDUs) intended for the multiple communication devices are generated and one or more transceivers are controlled to transmit first and second orthogonal frequency division multiple access data units that include the first and second groups, respectively, to the multiple communication devices. The first group includes a first MPDU that includes a first fragment of the plurality of fragments and is an only MPDU of the first group intended for the communication device. The second group includes a second MPDU that includes the first MSDU in its entirety and is included in the second group in response to determining that the first fragment was not properly received and/or decoded by the communication device.
-
公开(公告)号：US10425908B2
公开(公告)日：2019-09-24
申请号：US14799930
申请日：2015-07-15
Applicant: Marvell World Trade Ltd.
Inventor： Sagar A. Tamhane , Sarang Shrikrishna Wagholikar , Liwen Chu , Hongyuan Zhang , Hui-Ling Lou
Abstract: The present disclosure describes methods and apparatus for enabling spontaneous location determination in a scheduled wireless communication environment. For example embodiments, a first wireless communication device includes a transceiver and a multiple recipient communication system. The transceiver is configured to receive from a second wireless communication device a request to participate in a location determination procedure (LDP) that is to occur at least partially during a communication period that is assigned to a third wireless communication device. The multiple recipient communication system is configured to generate a multiple recipient frame that encapsulates (i) data that is destined for the third wireless communication device and (ii) a response to the request to participate in the LDP. For other example embodiments, a multiple recipient communication system of the second wireless communication device is configured to extract the response to the request to participate in the LDP from the multiple recipient frame.
-
89.发明授权公开(公告)号：US10383091B2
公开(公告)日：2019-08-13
申请号：US15144577
申请日：2016-05-02
Applicant: Marvell World Trade Ltd.
Inventor： Liwen Chu , Lei Wang , Hongyuan Zhang , Jinjing Jiang , Hui-Ling Lou
Abstract: A transmission opportunity (TXOP) owner transfer request is received at a first communication device from a second communication device. The TXOP transfer request indicates that the second communication device is requesting to transfer ownership of a first TXOP to the first communication device, wherein the first TXOP is owned by the second communication device. In response to receiving the TXOP owner transfer request, the first communication device initiates a second TXOP which is owned by the first communication device.
-
90.发明授权公开(公告)号：US10375679B2
公开(公告)日：2019-08-06
申请号：US14961635
申请日：2015-12-07
Applicant: Marvell World Trade Ltd.
Inventor： Liwen Chu , Yakun Sun , Hongyuan Zhang , Lei Wang , Jinjing Jiang , Hui-Ling Lou
Abstract: Multiple trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. The multiple trigger frames include a broadcast trigger frame that includes information to indicate transmission parameters for a first subset of the second communication devices, and one or more unicast trigger frames, each of the one or more unicast trigger frame including information to indicate transmission parameters for a particular second communication device in a second subset of the second communication devices. The broadcast trigger frame is transmitted, in a first frequency portion of a downlink OFDMA transmission, to the first subset of the second communication devices, and respective unicast trigger frames are transmitted, in respective second frequency portions of the downlink OFDMA transmission, to the second subset of the second communication devices.
-
-
-
-
-
-
-
-
-
Search Results
217
records
(took 0.027 seconds)
