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：US10178673B1

公开(公告)日：2019-01-08

申请号：US15379274

申请日：2016-12-14

Applicant: Marvell International Ltd.

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

IPC: H04W72/04 ,  H04W72/08 ,  H04L27/26 ,  H04W84/12

Abstract: Systems and techniques relating to wireless communications are described. A described technique includes transmitting a signal to cause wireless devices to concurrently transmit sounding packets on different subcarriers within a frequency band during a multi-user uplink transmission; receiving, concurrently, sounding packets from the wireless devices on the different subcarriers within the frequency band during the multi-user uplink transmission; determining subcarrier channel qualities based on the sounding packets; and assigning the subcarriers among the wireless devices for a subsequent multi-user uplink transmission based on the subcarrier channel qualities.

公开(公告)号：US09826532B1

公开(公告)日：2017-11-21

申请号：US15019768

申请日：2016-02-09

Applicant: Marvell International Ltd.

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

IPC: H04W4/00 ,  H04W72/04

CPC classification number: H04W72/1284 ,  H04W84/12

Abstract: A method for transmitting a resource request for an orthogonal frequency division multiple access (OFDMA) transmission is described. A resource request field that indicates buffer information corresponding to queued media access control (MAC) protocol data units (MPDUs) that are queued for transmission by a first communication device is generated. The resource request field includes i) a scale factor subfield that indicates a scale value, and ii) a resource subfield that indicates a base resource value. A resource request MPDU including the resource request field is generated. The resource request MPDU is transmitted to a second communication device via a wireless communication channel to request an allocation of radio resources for the OFDMA transmission. The buffer information is i) a number of bytes indicated by the scale value multiplied by the base resource value, or ii) a transmission opportunity duration indicated by the scale value multiplied by the base resource value.

公开(公告)号：US09699741B1

公开(公告)日：2017-07-04

申请号：US14687442

申请日：2015-04-15

Applicant: Marvell International Ltd.

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

IPC: H04W52/24 ,  H04W74/00 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W52/243 ,  H04W52/143 ,  H04W52/367 ,  H04W52/40 ,  H04W74/002 ,  H04W84/12 ,  H04W88/08

Abstract: A wireless communication system includes a first access point, and at least one first station in communication with the first access point. The first access point controls access parameters for communications with a first station. The access parameters may include Enhanced Distributed Channel Access parameters such as a minimum or maximum contention window parameter, an arbitration interframe spacing parameter, or a transmit opportunity limit parameter. The access parameters also may include a channel bandwidth parameter, a transmit power parameter, or a data rate parameter such as a modulation and coding scheme parameter. Where the system includes an additional access point, and at least one additional station in communication with the additional access point, the first access point and the additional access point control access parameters to avoid interference between the first access point and the additional access point. A central controller may coordinate between the first and additional access points.

公开(公告)号：US09325395B1

公开(公告)日：2016-04-26

申请号：US14042788

申请日：2013-10-01

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Mingguang Xu ,  Yakun Sun ,  Christian R. Berger

IPC: H04B7/04 ,  H04L25/03 ,  H04L25/06 ,  H04L1/06 ,  H04L1/20

CPC classification number: H04L25/067 ,  H04B7/0413 ,  H04L1/0618 ,  H04L1/20 ,  H04L25/0222 ,  H04L25/0234 ,  H04L25/0256 ,  H04L25/03038

Abstract: Systems, methods, and other embodiments associated with channel processing with dedicated pilots utilizing information from broadcast pilots are described. According to one embodiment, an method includes receiving, through a channel, i) a signal resource block that includes data and a dedicated pilot that is precoded and ii) at least one broadcast pilot that is not precoded. A channel property is deduced from the broadcast pilot; and the channel is processed by applying the channel property to the dedicated pilot. In one embodiment, the method includes estimating an effective channel by applying the channel property to the dedicated pilot.

Abstract translation: 描述了利用来自广播导频的信息的专用导频与信道处理相关联的系统，方法和其它实施例。 根据一个实施例，一种方法包括：通过信道接收i）包括预编码的数据和专用导频的信号资源块，以及ii）未被预编码的至少一个广播导频。 从广播飞行员推断频道属性; 并且通过将信道属性应用于专用导频来处理信道。 在一个实施例中，该方法包括通过将信道属性应用于专用导频来估计有效信道。

公开(公告)号：US09215121B1

公开(公告)日：2015-12-15

申请号：US14309657

申请日：2014-06-19

Applicant: MARVELL INTERNATIONAL LTD.

Inventor： Jungwon Lee ,  Jihwan P. Choi ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Yakun Sun

IPC: H04L27/00 ,  H04L27/26

CPC classification number: H04L27/2627 ,  H04B7/0413 ,  H04B7/0669 ,  H04B7/0671 ,  H04L1/0625 ,  H04L5/0023 ,  H04L5/0087 ,  H04L25/0204 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: A plurality of diagonal matrices Ci is determined, where the plurality of diagonal matrices Ci is for modifying a plurality of transmit signals to be transmitted via a plurality of transmit antennas, each diagonal matrix Ci for modifying an i-th block of sub-carriers, adjacent in frequency, in the plurality of transmit signals. The plurality of diagonal matrices Ci is used to modify the plurality of transmit signals to implement transmit diversity.

Abstract translation: 确定多个对角矩阵Ci，其中多个对角矩阵Ci用于修改要经由多个发射天线发射的多个发射信号，用于修改第i个子载波块的每个对角矩阵Ci， 频率相邻的多个发送信号。 多个对角矩阵Ci用于修改多个发射信号以实现发射分集。

公开(公告)号：US09191044B1

公开(公告)日：2015-11-17

申请号：US14142291

申请日：2013-12-27

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Jungwon Lee

IPC: H04B1/10 ,  H04B7/04

CPC classification number: H04B7/0456 ,  H04B1/10 ,  H04B7/0413 ,  H04J11/004 ,  H04L1/0048 ,  H04L25/03305

Abstract: Systems and methods are provided for determining a successive interference cancellation (SIC) decoding ordering in a multiple input multiple output transmission (MIMO) system. Multiple decoding orderings for received codewords are identified. A performance objective, such as total throughput or total probability of decoding, is computed for each one of the orderings based on the position of the codewords in the ordering. A globally optimal ordering is found that maximizes the performance objective over the multiple decoding orderings.

Abstract translation: 提供了用于确定多输入多输出传输（MIMO）系统中的连续干扰消除（SIC）解码排序的系统和方法。 识别接收码字的多个解码顺序。 基于排序中的码字的位置，针对每个排序计算性能目标，例如总吞吐量或总解码概率。 发现全局最优排序，使多个解码顺序的性能目标最大化。

公开(公告)号：US08787483B1

公开(公告)日：2014-07-22

申请号：US13659709

申请日：2012-10-24

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Krishna Srikanth Gomadam ,  Jiwoong Choi ,  Raphael Cendrillon ,  Hui-Ling Lou ,  Yan Zhang

IPC: H04L1/02

CPC classification number: H04L1/0048 ,  H04B7/0413 ,  H04L1/06 ,  H04L25/03248 ,  H04L25/03891 ,  H04L27/0012

Abstract: In accordance with an embodiment, there is provided a method comprising receiving, at a receiver, a desired signal and an interfering signal, wherein the interfering signal was transmitted with a modulation unknown to the receiver; identifying a likely modulation corresponding to the modulation with which the interfering signal was transmitted; and decoding the desired signal using a modulation dependent multiple-input multiple output (MIMO) detection, wherein the modulation dependent MIMO detection is based at least in part on the identified likely modulation corresponding to the modulation with which the interfering signal was transmitted, wherein the modulation dependent MIMO detection includes maximum likelihood (ML) detection.

Abstract translation: 根据实施例，提供了一种方法，包括在接收机处接收期望信号和干扰信号，其中以接收机未知的调制方式发送干扰信号; 识别与所述干扰信号被发送的调制相对应的可能调制; 以及使用调制相关多输入多输出（MIMO）检测对所述期望信号进行解码，其中所述调制相关MIMO检测至少部分地基于与所述干扰信号被发送的调制相对应的所识别的可能调制，其中， 调制相关MIMO检测包括最大似然（ML）检测。

公开(公告)号：US08769352B1

公开(公告)日：2014-07-01

申请号：US14016425

申请日：2013-09-03

Applicant: Marvell International Ltd.

Inventor： Yakun Sun ,  Jungwon Lee

IPC: G06F11/00 ,  G08C25/02 ,  H03M13/39 ,  H04L1/00

CPC classification number: H04B7/0456 ,  H04B1/10 ,  H04B7/0413 ,  H04J11/004 ,  H04L1/0048 ,  H04L25/03305

Abstract: Systems and methods are provided for determining a successive interference cancellation (SIC) decoding ordering in a multiple input multiple output transmission (MIMO) system with retransmissions. A plurality of codewords is transmitted in a current transmission time. Some of the codewords may have been previously transmitted in previous transmission attempts according to a retransmission protocol. The plurality of codewords is received and an ordering metric is computed for a received codeword based on channels associated with multiple transmission attempts of the codeword. A decoding ordering of the codewords is determined based on the computed ordering metric. Performance parameters such as Packet Error Rate (PER), channel gain, and/or equalizer-output Signal-to-Interference and Noise Ratio (SINR) may be used to evaluate a channel quality for each one of the transmission attempts of the codeword. The ordering metric may be updated recursively with each transmission attempt.

Abstract translation: 提供了用于在具有重发的多输入多输出传输（MIMO）系统中确定连续干扰消除（SIC）解码排序的系统和方法。 在当前传输时间内发送多个码字。 根据重传协议，先前的传输尝试中可能已经先前传送了一些码字。 接收多个码字，并且基于与码字的多个发送尝试相关联的信道对接收到的码字计算排序度量。 基于所计算的排序度量来确定码字的解码排序。 可以使用诸如分组差错率（PER），信道增益和/或均衡器输出信号与干扰和噪声比（SINR）的性能参数来评估码字的每个传输尝试的信道质量。 每个传输尝试可以递归地更新排序度量。

公开(公告)号：US10681625B1

公开(公告)日：2020-06-09

申请号：US16241881

申请日：2019-01-07

Applicant: Marvell International Ltd.

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

IPC: H04L5/00 ,  H04W48/18 ,  H04B7/0452 ,  H04W72/04 ,  H04W48/10 ,  H04L1/18 ,  H04W88/08 ,  H04L29/08 ,  H04L12/911

Abstract: In aspects of acknowledgement options for downlink multi-user transmission, a wireless network system includes an access point that can communicate a downlink multi-user transmission soliciting acknowledgement from one or more station devices. The access point can receive an association request or an operation mode change request frame from one or more of the station devices, and determine an acknowledgement option for each of the station devices that communicate the request to the access point. The access point can then use a multi-user transmission mode or a single user transmission mode for each of the station devices based on the acknowledgement option determined for each of the respective station devices.