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：US20140064393A1

公开(公告)日：2014-03-06

申请号：US14018807

申请日：2013-09-05

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Mingguang Xu

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0478

Abstract: A method includes calculating a set of first metrics using channel information and one or more precoders, where each of the first metrics corresponds to a respective set of a plurality of sets of codebook precoders, and selecting, based on the set of first metrics and a first selection criteria, a set of codebook precoders from the plurality of sets of codebook precoders. The method also includes, in response to selecting the set of codebook precoders, calculating a set of second metrics and selecting, based on (i) the set of second metrics and (ii) a second selection criteria, a codebook precoder from the selected set of codebook precoders. Each of the second metrics is calculated using a respective codebook precoder in the selected set of codebook precoders. The method also includes causing the selected codebook precoder to be applied to a signal to be transmitted to a communication device.

Abstract translation: 一种方法包括使用信道信息和一个或多个预编码器来计算一组第一度量，其中第一度量中的每一个对应于多组码本预编码器的相应集合，并且基于该组第一度量和 第一选择标准，来自多组码本预编码器的一组码本预编码器。 该方法还包括响应于选择码本预编码器集合，计算一组第二度量并且基于（i）第二度量集合和（ii）第二选择标准来选择来自所选集合的码本预编码器 的码本预编码器。 使用选定的码本编码器集合中的相应码本预编码器来计算每个第二度量。 该方法还包括使所选择的码本预编码器应用于要发送到通信设备的信号。

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：US10812244B2

公开(公告)日：2020-10-20

申请号：US16378170

申请日：2019-04-08

Applicant: Marvell World Trade Ltd.

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

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04W72/04

Abstract: A first communication device receives an uplink orthogonal frequency multiple access (OFDMA) transmission. The uplink OFDMA transmission includes respective transmissions from multiple second communication devices, and the respective transmissions from the multiple second communication devices include indications of respective acknowledgment policies corresponding to the respective transmissions from the multiple second communication devices. The first communication device generates one or more acknowledgment physical layer (PHY) data units to acknowledge at least a portion of the uplink OFDMA transmission, where the one or more acknowledgment PHY data units do not comply with at least one of the acknowledgment policies corresponding to the uplink OFDMA transmission. The first communication device transmits the one or more acknowledgment PHY data units to acknowledge the at least the portion of the uplink OFDMA transmission.

公开(公告)号：US10602430B2

公开(公告)日：2020-03-24

申请号：US16247451

申请日：2019-01-14

Applicant: Marvell World Trade Ltd.

Inventor： Liwen Chu ,  Lei Wang ,  Jinjing Jiang ,  Hongyuan Zhang ,  Yakun Sun

IPC: H04W48/08 ,  H04L29/08 ,  H04B7/0452 ,  H04L29/06 ,  H04W48/16 ,  H04W80/02 ,  H04W84/12 ,  H04W88/08

Abstract: An access point (AP) device determines a set of basic service set identifiers (BSSIDs). Each BSSID includes a same group of most significant bits (MSBs) and a different group of n least significant bits (LSBs). The AP device assigns respective BSSIDs from the set of BSSIDs to multiple virtual APs, and designates one of the assigned BSSIDs as a reference BSSID that corresponds to a transmitter address (TA) for frames intended for client stations associated with more than one virtual AP. The AP device generates and transmits a management frame that includes i) a header with a TA field set to one of the assigned BSSIDs, and ii) a frame body with a plurality of fields that includes a) a first field set to n, and b) a second field set to the n LSBs of the reference BSSID. The TA field, the first field, and the second field in the management frame indicate the reference BSSID to a client station that receives the management frame.

公开(公告)号：US10433309B2

公开(公告)日：2019-10-01

申请号：US15983524

申请日：2018-05-18

Applicant: Marvell World Trade Ltd.

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

IPC: H04B7/204 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

Abstract: A communication device assigns i) a first orthogonal frequency division multiplex (OFDM) tone block for a communication channel to a first communication device, and ii) a second OFDM tone block to a second communication device. The first OFDM tone block and the second OFDM block each span less than or equal to 10 MHz, and are both within a subchannel that spans a 20 MHz. The communication device generates an orthogonal frequency division multiple access (OFDMA) physical layer (PHY) data unit for transmission in the communication channel. The OFDMA PHY data unit is generated to include: a legacy preamble portion having legacy signal field that spans the subchannel; and a data portion that includes i) first data for the first communication device modulated to the first OFDM tone block, and second data for the second communication device modulated to the second OFDM tone block.

公开(公告)号：US20190199566A1

公开(公告)日：2019-06-27

申请号：US16291649

申请日：2019-03-04

Applicant: Marvell World Trade Ltd.

Inventor： Yakun Sun ,  Hongyuan Zhang ,  Rui Cao

IPC: H04L27/26

CPC classification number: H04L27/2602 ,  H04L27/2613

Abstract: Systems, methods, and apparatuses are disclosed herein for aligning HE-LTFs corresponding to a plurality of users by determining a respective number of spatial streams corresponding to each user, determining a highest respective number of spatial streams of the spatial streams, and setting an alignment number of HE-LTF symbols to be equal to or larger than the highest respective number of spatial streams. For each respective user, a respective matrix of HE-LTF symbols corresponding to the respective number of spatial streams of the respective user is selected, and it is determined whether the respective matrix of HE-LTF symbols has fewer symbols than the alignment number. In response to determining that the respective matrix of HE-LTF symbols has fewer symbols than the alignment number, padding symbols may be added to the respective matrix to yield a number of HE-LTF symbols in the respective matrix that corresponds to the alignment number.

公开(公告)号：US10334571B2

公开(公告)日：2019-06-25

申请号：US14961380

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W4/06 ,  H04L27/26 ,  H04W72/00

Abstract: One or more trigger frames are generated at a first communication device to trigger an uplink orthogonal frequency multiple access (OFDMA) transmission by multiple second communication devices. Each of the one or more trigger frames (i) includes an indication of a trigger type and (ii) is formatted according to the indicated trigger type. The first communication device transmits the one or more trigger frames to the multiple second communication devices. The first device then receives the triggered uplink OFDMA transmission that includes respective transmissions from the multiple second communication devices.