公开(公告)号：US20140072080A1

公开(公告)日：2014-03-13

申请号：US14077624

申请日：2013-11-12

Applicant: Marvell International Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Arul Durai Murugan Palanivelu ,  Hui-Ling Lou ,  Songping Wu

IPC: H04L27/26

CPC classification number: H04L27/2649 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0092 ,  H04L25/0204 ,  H04L25/022 ,  H04L27/0008 ,  H04L27/0012 ,  H04L27/2601 ,  H04L27/2602

Abstract: Systems and methods are provided for processing a payload portion of a received signal in a single carrier mode or a multiple carrier mode based on a portion of the received signal. A single carrier signaling portion is received at a first rate, and whether the payload portion of the signal is a single carrier signal or a multiple carrier signal is detected from the received single carrier signaling portion. The payload portion of the received signal is received at the first rate and demodulated in a single carrier mode if the detecting determines that the payload portion of the received signal is a single carrier signal, and the payload portion of the received signal is demodulated in a multiple carrier mode if the detecting determines that the payload portion of the received signal is a multiple carrier signal.

Abstract translation: 提供了系统和方法，用于基于接收信号的一部分，以单载波模式或多载波模式处理接收信号的有效载荷部分。 以第一速率接收单载波信令部分，以及信号的有效载荷部分是单载波信号还是从所接收的单载波信令部分检测多载波信号。 如果检测结果确定接收信号的有效载荷部分是单载波信号，则以第一速率接收接收信号的有效载荷部分并以单载波模式进行解调，并且接收信号的有效载荷部分被解调为 多载波模式，如果检测确定接收信号的有效载荷部分是多载波信号。

公开(公告)号：US08619841B1

公开(公告)日：2013-12-31

申请号：US13675516

申请日：2012-11-13

Applicant: Marvell International Ltd.

Inventor： Jungwon Lee ,  Hui-Ling Lou ,  Dimitrios-Alexandros Toumpakaris

IPC: H04B1/38 ,  H04L25/02 ,  H04L27/00 ,  H04L7/00 ,  H04L23/00

CPC classification number: H04L27/2657 ,  H04B7/01

Abstract: A transceiver configured to be implemented in a first device includes transmitter and receiver modules and first and second estimator modules. The receiver module receives a first signal transmitted on a channel from a second device to the first device. The first estimator module estimates a first parameter associated with the first signal or the channel. The second estimator module estimates a carrier frequency offset based on the first parameter. The carrier frequency offset is a difference between a first carrier frequency of the first device, and a second carrier frequency of the second device. The transmitter module adjusts a second parameter based on the carrier frequency offset, and based on the second parameter, transmits a second signal to the second device or the receiver module adjusts a third parameter based on the carrier frequency offset, and based on the third parameter, receives a third signal from the second device.

Abstract translation: 被配置为在第一设备中实现的收发器包括发射器和接收器模块以及第一和第二估计器模块。 接收器模块接收在从第二设备到第一设备的信道上发送的第一信号。 第一估计器模块估计与第一信号或通道相关联的第一参数。 第二估计器模块基于第一参数估计载波频率偏移。 载波频率偏移是第一装置的第一载波频率和第二装置的第二载波频率之间的差。 发射机模块基于载波频率偏移来调整第二参数，并且基于第二参数，将第二信号发送到第二设备，或者接收机模块基于载波频率偏移来调整第三参数，并且基于第三参数 从第二设备接收第三信号。

公开(公告)号：US10771498B1

公开(公告)日：2020-09-08

申请号：US15178979

申请日：2016-06-10

Applicant: MARVELL INTERNATIONAL LTD.

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

IPC: H04L29/06 ,  H04W12/12 ,  H04W12/06

Abstract: Systems, methods, and other embodiments associated with validating de-authentication requests to prevent spoofing are described. According to one embodiment, an apparatus includes a wireless controller configured to receive a de-authentication request and determine whether the de-authentication request is invalid based on the wireless controller's receipt of two or more responses to a timing request sent by the wireless controller. Only one response is expected. The two or more responses include the address of a first station.

公开(公告)号：US10742285B1

公开(公告)日：2020-08-11

申请号：US15350985

申请日：2016-11-14

Applicant: Marvell International Ltd.

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W84/12 ,  H04B7/0452 ,  H04L27/26

Abstract: A first communication device receives respective beamforming training data units simultaneously transmitted to the first communication device by multiple second communication devices. The first communication device generates, based on the respective beamforming training data units received from the multiple second communication devices, respective beamforming feedback data units to be transmitted to respective ones of the multiple second communication devices. The first communication device transmits the respective feedback data units to the respective ones of the multiple second communication devices.

公开(公告)号：US10588165B1

公开(公告)日：2020-03-10

申请号：US14963045

申请日：2015-12-08

Applicant: Marvell International Ltd.

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

IPC: H04W74/08 ,  H04W76/11 ,  H04L5/00 ,  H04W4/06 ,  H04B7/0452 ,  H04W72/04

Abstract: A method of determining whether a wireless communication medium is clear is carried out on a client device, and includes: associating with a first virtual access point (AP) of a plurality of virtual APs implemented by a physical AP; receiving, from a physical AP, a message identifying the basic service set (BSS) color of each of the plurality of virtual APs implemented by on the physical AP; detecting a packet data unit; measuring the energy of the packet data unit; decoding a BSS color from the packet data unit; if the decoded BSS color is the same as a BSS color in the message from the physical AP, then setting an energy threshold to a first level; if the decoded BSS color is not the same as any BSS color in the message from the physical AP, then setting an energy threshold to a second level, wherein the second level is higher than the first level; and transmitting or refraining from transmitting a packet data unit based on a comparison of the measured energy and the energy threshold.

公开(公告)号：US10581627B1

公开(公告)日：2020-03-03

申请号：US15418420

申请日：2017-01-27

Applicant: Marvell International Ltd.

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

IPC: H04L12/18 ,  H04L12/26 ,  H04W72/00 ,  H04B7/14 ,  H04W84/12 ,  H04W88/08

Abstract: The present disclosure includes systems and techniques relating to broadcast and multicast in a wireless communication system. In some implementations, an announcement frame indicating a broadcast or multicast service period to multiple second wireless devices is transmitted by a first wireless device. The announcement frame indicates (i) an end time of the broadcast or multicast service period and (ii) an order of a sequence of frames to be directed to the multiple second wireless devices. Each of the sequence of frames is transmitted at the first wireless device using a directional antenna pattern to a respective one of the multiple second wireless devices, according to the order of the sequence of frames indicated in the announcement frame. An acknowledgement frame in response to the each of the sequence of frames is received at the first wireless device from the respective one of the multiple second wireless devices.

公开(公告)号：US10554251B1

公开(公告)日：2020-02-04

申请号：US15977490

申请日：2018-05-11

Applicant: Marvell International Ltd.

Inventor： Liwen Chu ,  Hongyuan Zhang ,  Hui-Ling Lou

IPC: H04B1/7156 ,  H04W52/02 ,  H04M1/725

Abstract: A first wireless device determines, while a first and second wireless transceiver are powered off, start of a service period. The first wireless transceiver is turned on in response to the determination to enable the first wireless device to establish communication via a LP wireless channel while the second wireless transceiver is off. The first wireless device receives a request frame from a second wireless device and a time of a timing function is updated based on the request frame.

公开(公告)号：US20190281658A1

公开(公告)日：2019-09-12

申请号：US16421136

申请日：2019-05-23

Applicant: Marvell International Ltd.

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

IPC: H04W84/02 ,  H04W28/02 ,  H04L1/16 ,  H04L1/18 ,  H04W72/12

Abstract: Aspects of the disclosure provide an apparatus for wireless communication. The apparatus includes a transceiver and a processing circuit. The transceiver is configured to transmit and receive wireless signals. The processing circuit is configured to detect an error of a previous scheduled transmission of data units from the apparatus to another apparatus. The other apparatus provides scheduled resources for transmission between the two apparatuses. Further, the processing circuit is configured to determine resources that are scheduled by the other apparatus for the apparatus to perform retransmission, and provide one or more of the data units in the previous scheduled transmission to the transceiver for retransmission using the scheduled resources.

公开(公告)号：US10334614B1

公开(公告)日：2019-06-25

申请号：US15357781

申请日：2016-11-21

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jihwan P. Choi ,  Hui-Ling Lou ,  Leilei Song ,  Yakun Sun ,  Qing Zhao

IPC: H04J3/00 ,  H04W72/12 ,  H04W88/06

Abstract: Various methods and apparatus are disclosed for mitigating interference between communications between different radio access technologies in a communication device. Methods and apparatus include communicating between a first communication device and a second communication device according to a first communication protocol, and communicating between the first communication device and a third communication device according to a second communication protocol. The methods and apparatus further include determining a first time interval associated with when data is to be transmitted between the first communication device and the second communication device according to the first communications protocol. The methods and apparatus also include sending to the third communication device, an indication of a second time interval to prompt the third communication device not transmit to the first communication device during the second time interval, wherein the second time interval corresponds to the first time interval.

公开(公告)号：US10320690B1

公开(公告)日：2019-06-11

申请号：US15353544

申请日：2016-11-16

Applicant: Marvell International Ltd.

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

IPC: H04L12/841 ,  H04L12/26 ,  H04L29/08 ,  H04W84/12

Abstract: A first communication device generates a physical layer (PHY) protocol data unit having a beginning portion and an ending portion, where the beginning portion includes a PHY protocol header having a PHY protocol preamble, and the ending portion includes a reference signal. The PHY protocol data unit prompts a second communication device to record a first time corresponding to reception of the reference signal by the second communication device. The first communication device transmits the PHY protocol data unit, records a second time corresponding to transmission of the reference signal by the first communication device. The first communication device calculates a time of flight of the PHY protocol data unit using the second time, and/or transmits the second time to the second communication device, a third communication device, or both, to facilitate calculation of the time of flight of the PHY protocol data unit using the second time.