公开(公告)号：US08976886B2

公开(公告)日：2015-03-10

申请号：US13852576

申请日：2013-03-28

Applicant: Marvell World Trade Ltd.

Inventor： Krishna Srikanth Gomadam ,  Yakun Sun ,  Raphael Cendrillon ,  Hui-Ling Lou

IPC: H04L25/02 ,  H04L5/00 ,  H04L25/03 ,  H04L1/04

CPC classification number: H04L25/0242 ,  H04L5/0023 ,  H04L25/0228 ,  H04L25/03159

Abstract: Systems and methods for estimating characteristics of a channel are provided. A transmission of known reference data is received at a receiving device. The reference data is transmitted over the channel that includes one or more desired layers and one or more interfering layers. Characteristics of the channel are determined based on the known reference data, where the determining includes a joint estimation of the one or more desired layers and the one or more interfering layers. The determining includes selecting certain of the layers to be estimated at each of the known reference data and selecting certain of the layers to be estimated over a range of the known reference data. The determining includes solving an equation to jointly estimate the one or more desired layers and the one or more interfering layers based on the selections. The selections reduce a number of unknown values in the equation.

Abstract translation: 提供了用于估计通道特性的系统和方法。 在接收设备处接收已知参考数据的传输。 参考数据在包括一个或多个所需层和一个或多个干扰层的信道上传输。 基于已知参考数据确定信道的特征，其中确定包括一个或多个所需层和一个或多个干扰层的联合估计。 确定包括在每个已知参考数据处选择要估计的某些层，并且在已知参考数据的范围上选择待估计的某些层。 确定包括求解方程式以基于选择共同估计一个或多个所需层和一个或多个干扰层。 选择减少了方程中的一些未知值。

公开(公告)号：US20140293912A1

公开(公告)日：2014-10-02

申请号：US14242674

申请日：2014-04-01

Applicant: Marvell World Trade Ltd.

Inventor： Yi-Ling Chao ,  Qing Zhao ,  Leilei Song ,  Hui-Ling Lou ,  Yakun Sun

IPC: H04L5/00

CPC classification number: H04W72/1215 ,  H04L1/1812 ,  H04L1/1825 ,  H04L1/1854 ,  H04L1/1887 ,  H04L5/0078 ,  H04L5/14 ,  H04W88/06

Abstract: The present disclosure describes systems and techniques relating to wireless communications by devices that employ more than one wireless communication technology. According to an aspect of the described systems and techniques, a device includes: a first radio configured to communicate wirelessly with a first station in accordance with a first wireless communication technology, a second radio configured to communicate wirelessly with a second station in accordance with a second wireless communication technology, a controller configured to (i) terminate scheduled portions of time for sending communications from the first radio to the first station in favor of receiving communications from the second station to the second radio and (ii) restrict which of all available scheduled portions of time for sending communications from the first radio to the first station are provided for termination based on information about types of data transmitted in respective ones of the available scheduled portions of time.

Abstract translation: 本公开描述了与使用多于一种无线通信技术的设备相关的无线通信的系统和技术。 根据所描述的系统和技术的一个方面，一种设备包括：第一无线电，被配置为根据第一无线通信技术与第一站进行无线通信;第二无线电，被配置为与第二站无线通信， 第二无线通信技术，控制器，被配置为（i）终止从第一无线电发送通信到第一站的调度部分时间，有利于接收从第二站到第二无线电的通信，以及（ii）限制所有可用的 提供用于从第一无线电发送通信到第一站的预定部分时间，用于基于在可用的预定调度部分中发送的数据的类型的信息进行终止。

公开(公告)号：US20140274202A1

公开(公告)日：2014-09-18

申请号：US14218876

申请日：2014-03-18

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Qing Zhao ,  Yakun Sun ,  Yi-Ling Chao ,  Leilei Song ,  Hui-Ling Lou

IPC: H04W24/02 ,  H04W88/06

CPC classification number: H04W24/02 ,  H04L1/0026 ,  H04W72/1215 ,  H04W72/1226 ,  H04W84/12 ,  H04W88/06

Abstract: In a method of operating a communication device that includes at least (i) a first network interface configured to operate according to a first communication protocol and (ii) a second network interface configured to operate according to a second communication protocol, the first communication interface is operated according to the first communication protocol. The first communication protocol defines a periodically repeating set of time intervals. One or more time intervals, from the set of time intervals, that meet a selection criteria are determined. The selection criteria is based on level of interference experienced by the first network interface. During the determined one or more time intervals, operation of the first network interface according to the first communication protocol is suspended, and operation of the second network interface according to the second communication protocol is enabled.

Abstract translation: 在一种操作通信设备的方法中，所述通信设备至少包括（i）被配置为根据第一通信协议操作的第一网络接口和（ii）被配置为根据第二通信协议进行操作的第二网络接口，所述第一通信接口 根据第一通信协议进行操作。 第一通信协议定义周期性重复的时间间隔集合。 确定满足选择标准的从一组时间间隔开始的一个或多个时间间隔。 选择标准基于第一网络接口所经历的干扰水平。 在所确定的一个或多个时间间隔期间，暂停根据第一通信协议的第一网络接口的操作，并且启用根据第二通信协议的第二网络接口的操作。

公开(公告)号：US08781401B2

公开(公告)日：2014-07-15

申请号：US13730420

申请日：2012-12-28

Applicant: Marvell World Trade Ltd.

Inventor： Bhaskar W. Nallapureddy ,  Songping Wu ,  Tsunglun Yu ,  Hui-Ling Lou

IPC: H04B7/00

CPC classification number: G01S7/021 ,  G01R23/10

Abstract: A system including a counting module, a difference module, and a radar module. The counting module counts polarity reversals of samples of a signal. The samples are generated during a first period, a second period, and a third period. The counting module generates a first count, a second count, and a third count of the polarity reversals counted during the respective periods. The difference module determines a first difference between the first count and the second count, a second difference between the second count and the third count, and a third difference between the first difference and the second difference. The radar module determines variation in frequency of the signal based on the first count and the second count, and determines a type of radar present in the signal based on one or more of the third difference and the variation in the frequency of the signal.

Abstract translation: 一种包括计数模块，差分模块和雷达模块的系统。 计数模块对信号样本的极性反转进行计数。 在第一时段，第二周期和第三周期期间生成样本。 计数模块产生在各个周期期间计数的极性反转的第一计数，第二计数和第三计数。 差分模块确定第一计数和第二计数之间的第一差异，第二计数和第三计数之间的第二差值以及第一差值和第二差值之间的第三差值。 雷达模块基于第一计数和第二计数确定信号的频率变化，并且基于第三差异和信号频率的变化中的一个或多个确定信号中存在的雷达的类型。

公开(公告)号：US20140134956A1

公开(公告)日：2014-05-15

申请号：US14159185

申请日：2014-01-20

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Jungwon Lee ,  Hui-Ling Lou

IPC: H04W24/10

CPC classification number: H04W24/10 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0632 ,  H04W16/28

Abstract: In a technique for communication with a station on a wireless network, the technique includes forming a plurality of narrow-band beams, each having a different angular direction from an antenna of a base station and collectively distributed over a beamspace to form a pseudo-omni-directional beam pattern. That beamspace may span an entire spherical region or a portion thereof, for example, when the narrow-band beams are broadcast over a sector of an entire spherical region. The technique may assign each of the plurality of narrow-band beams to a different frequency band (such as a different channel band or sub-channel) on the wireless network. The technique may simultaneously broadcast the plurality of narrow-band beams in a time-varying manner such that the angular direction of each of the plurality of narrow-band beams varies with time, where that variation may be random or ordered.

Abstract translation: 在用于与无线网络上的站通信的技术中，该技术包括形成多个窄带波束，每个窄带波束具有与基站的天线不同的角度方向，并且共同分布在波束空间上以形成伪全波段 方向光束图案。 该波束空间可以跨越整个球形区域或其一部分，例如当窄带波束在整个球形区域的扇区上广播时。 该技术可以将多个窄带波束中的每一个分配给无线网络上的不同频带（例如，不同的信道频带或子信道）。 该技术可以以时变方式同时广播多个窄带波束，使得多个窄带波束中的每一个的角度方向随时间变化，其中该变化可以是随机的或有序的。

公开(公告)号：US20140064098A1

公开(公告)日：2014-03-06

申请号：US14010304

申请日：2013-08-26

Applicant: Marvell World Trade Ltd.

Inventor： Jihwan P. Choi ,  Jiwon S. Han ,  Hui-Ling Lou

IPC: H04W28/02

CPC classification number: H04W28/0273 ,  H04L1/0001 ,  H04L1/1822 ,  H04L1/1896 ,  H04L5/0053

Abstract: The present disclosure describes systems and techniques relating to wireless communications. According to an aspect of the described systems and techniques, an apparatus includes circuitry configured to receive a signal representing a wireless communication transmission; and circuitry configured to process the signal to (i) decode a control portion of the wireless communication transmission, (ii) determine from the decoded control portion that a data portion of the wireless communication transmission was successfully decoded previously and acknowledged, and so the wireless communication transmission is an unnecessary retransmission, and (iii) trigger acknowledgement of the wireless communication transmission being successfully decoded, without completing a decode of the data portion of the wireless communication transmission, when the unnecessary retransmission is detected.

Abstract translation: 本公开描述了与无线通信有关的系统和技术。 根据所描述的系统和技术的一个方面，一种装置包括被配置为接收表示无线通信传输的信号的电路; 以及被配置为处理所述信号以（i）对所述无线通信传输的控制部分进行解码的电路，（ii）从所解码的控制部分确定所述无线通信传输的数据部分先前被成功解码并被确认，并且因此所述无线 通信传输是不必要的重传，并且（iii）在检测到不必要的重传时，不完成无线通信传输的数据部分的解码，触发正在成功解码的无线通信传输的确认。

公开(公告)号：US20140045498A1

公开(公告)日：2014-02-13

申请号：US13961634

申请日：2013-08-07

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Jihwan P. Choi ,  Yakun Sun ,  Ying Cai ,  Hui-Ling Lou

IPC: H04W36/32

CPC classification number: H04W36/04 ,  H04W36/0083 ,  H04W36/14 ,  H04W36/32

Abstract: In a wireless network including a first cell and a second cell, it is determined whether a measure of mobility of a user device meets a mobility criterion, and it is determined whether a size of the second cell meets a cell size criterion. When it is determined that (i) the measure of mobility of the user device meets the mobility criterion and (ii) the size of the second cell meets the cell size criterion, the user device is prevented from being switched from the first cell to the second cell, or at least one of (i) a handover parameter or (ii) a cell reselection parameter is adjusted in order to change a probability that the user device will switch from the first cell to the second cell.

Abstract translation: 在包括第一小区和第二小区的无线网络中，确定用户装置的移动性的度量是否满足移动性标准，并且确定第二小区的大小是否满足小区大小标准。 当确定（i）用户设备的移动性的度量符合移动性标准时，（ii）第二小区的大小满足小区大小准则，防止用户设备从第一小区切换到 或者（i）切换参数或（ii）小区重选参数中的至少一个被调整以便改变用户设备将从第一小区切换到第二小区的概率。

公开(公告)号：US20140003384A1

公开(公告)日：2014-01-02

申请号：US14015722

申请日：2013-08-30

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yong Liu

IPC: H04L5/00

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0634 ,  H04B7/0697 ,  H04L5/0048

Abstract: Systems, apparatuses, and techniques relating to wireless local area network devices are described. A described technique includes transmitting a sounding packet to wireless communication devices; receiving, in response to the sounding packet, feedback packets from the wireless communication devices, wherein the feedback packets are indicative of beamforming matrices, the beamforming matrices being derived from received versions of the sounding packet; determining steering matrices based on the beamforming matrices; generating spatially steered data packets for the wireless communication devices based respectively on the steering matrices and data streams intended respectively for the wireless communication devices; and transmitting, within a frame, the spatially steered data packets to the wireless communications devices, wherein the spatially steered data packets concurrently provide the data streams respectively within the frame to the wireless communication devices via different spatial wireless channels.

Abstract translation: 描述与无线局域网设备相关的系统，设备和技术。 所描述的技术包括向无线通信设备发送探测分组; 响应于所述探测分组，从所述无线通信设备接收反馈分组，其中所述反馈分组指示波束形成矩阵，所述波束形成矩阵从所述探测分组的接收版本导出; 基于所述波束形成矩阵确定导向矩阵; 基于分别用于无线通信设备的导向矩阵和数据流，为无线通信设备生成空间转向的数据分组; 以及在帧内将所述空间转向的数据分组发送到所述无线通信设备，其中所述空间转向数据分组在所述帧内分别通过不同的空间无线信道向所述无线通信设备提供所述数据流。

公开(公告)号：US11134443B2

公开(公告)日：2021-09-28

申请号：US16264431

申请日：2019-01-31

Applicant: Marvell World Trade Ltd.

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

IPC: H04W52/02 ,  H04L29/06 ,  H04W48/16 ,  H04W52/54

Abstract: Embodiments described herein provide a method for creating a low power wake-up radio frame. The method comprises generating, at an access point, a wake-up radio frame for transmission to one or more client stations, determining whether the wake-up radio frame is to be transmitted inside or outside a basic service set associated with the access point, the basic service set having a basic service set identifier that is used to identify the access point. And in response to determining that the wake-up radio frame is to be transmitted outside the basic service set, computing, a target frame check sequence for the wake-up radio frame without using the basic service set identifier associated with the basic service set, appending the target frame check sequence to the wake-up radio frame; and transmitting, to one or more client stations, the wake-up radio frame with the appended target frame check sequence.

公开(公告)号：US11032118B2

公开(公告)日：2021-06-08

申请号：US16179320

申请日：2018-11-02

Applicant: Marvell World Trade Ltd.

Inventor： Rui Cao ,  Hongyuan Zhang ,  Hui-Ling Lou ,  Xiayu Zheng

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

Abstract: In a method for wireless communication, a communication device selects a downclocking ratio for generating a physical layer (PHY) protocol data unit (PPDU) to be transmitted in a vehicular communication network. The communication device generates the PPDU i) according to the selected downclocking ratio, and ii) as a downclocked version of a PPDU format defined by one of a) the IEEE 802.11n Standard, b) the IEEE 802.11ac Standard, and c) the IEEE 802.11ax Standard. The communication device transmits the PPDU in the vehicular communication network.