公开(公告)号：US09198072B2

公开(公告)日：2015-11-24

申请号：US13897144

申请日：2013-05-17

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Krishna Srikanth Gomadam

IPC: G01R31/08 ,  H04W24/10 ,  H04B7/02 ,  H04L1/00 ,  H04B7/06 ,  H04L1/20

CPC classification number: H04W24/08 ,  H04B7/024 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/20 ,  H04W24/10 ,  H04W72/08

Abstract: An interference covariance calculation technique is selected at a first communication device, where the interference covariance calculation technique is to be utilized by a second communication device when computing a channel quality indicator (CQI) associated with a communication channel between the first communication device and the second communication device. The interference covariance calculation technique is selected from a set of multiple techniques for calculating interference covariance. The first communication device transmits an indication of the selected interference covariance calculation technique to the second communication device. The first communication device receives a CQI calculated by the second communication device in accordance with the selected interference covariance calculation technique.

Abstract translation: 在第一通信设备处选择干扰协方差计算技术，其中当计算与第一通信设备和第二通信设备之间的通信信道相关联的信道质量指示符（CQI）时，由第二通信设备利用干扰协方差计算技术 通讯装置 从一组用于计算干涉协方差的技术中选出干涉协方差计算技术。 第一通信设备向第二通信设备发送所选择的干扰协方差计算技术的指示。 第一通信装置根据所选择的干涉协方差计算技术接收由第二通信装置计算出的CQI。

公开(公告)号：US09143951B2

公开(公告)日：2015-09-22

申请号：US13862422

申请日：2013-04-14

Applicant: Marvell World Trade Ltd.

Inventor： Krishna Srikanth Gomadam ,  Jihwan P. Choi

IPC: H04B7/00 ,  H04W24/00 ,  H04B7/02 ,  H04B7/06 ,  H04W72/04 ,  H04L25/02 ,  H04B17/24 ,  H04B17/309

CPC classification number: H04W24/00 ,  H04B7/024 ,  H04B7/0619 ,  H04B17/24 ,  H04B17/309 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0077 ,  H04L1/06 ,  H04L25/0224 ,  H04W72/042

Abstract: A method includes receiving, at a communication terminal, signals from a group of cells that cooperate in a Coordinated Multipoint (CoMP) transmission scheme. Signaling that specifies a CoMP resource management (CRM) set is received at the communication terminal. The CRM set includes a subset of the cells in the group for which the communication terminal is to perform signal measurements. A size of the CRM set is restricted to a predefined maximum size. The signal measurements are performed at the communication terminal only on the signals received from one or more of the cells in the CRM set. The signal measurements performed on the one or more of the cells in the CRM set are reported from the communication terminal.

Abstract translation: 一种方法包括在通信终端处接收来自以协调多点（CoMP）传输方案协作的一组小区的信号。 在通信终端处接收指定CoMP资源管理（CRM）集合的信令。 CRM集合包括通信终端要进行信号测量的组中的小区的子集。 CRM集的大小限于预定义的最大大小。 信号测量仅在通信终端仅在从CRM集合中的一个或多个小区接收到的信号上执行。 从通信终端报告对CRM集中的一个或多个小区执行的信号测量。

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：US08670499B2

公开(公告)日：2014-03-11

申请号：US13766790

申请日：2013-02-14

Applicant: Marvell World Trade Ltd.

Inventor： Yona Perets ,  Krishna Srikanth Gomadam ,  Adoram Erell ,  Daniel Yellin ,  Ezer Melzer

IPC: H04B7/02

CPC classification number: H04B7/0473 ,  H04L1/0009 ,  H04L1/0656 ,  H04L1/0675 ,  H04L5/0025

Abstract: A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver.

Abstract translation: 一种用于通信的方法包括：在具有第一数量的发射天线端口的发射机中，将发射机使用的第二数量的空间层的上限设置为小于第一数量。 空间层的实际数量（不超过上限）被分配用于传送给给定的接收机。 调制符号的一个或多个流被映射到所分配的实际数量的空间层上。 空间层的实际数量从发射机发射到给定的接收机。

公开(公告)号：US20130288730A1

公开(公告)日：2013-10-31

申请号：US13862422

申请日：2013-04-14

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Krishna Srikanth Gomadam ,  Jihwan P. Choi

IPC: H04W24/00

CPC classification number: H04W24/00 ,  H04B7/024 ,  H04B7/0619 ,  H04B17/24 ,  H04B17/309 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0077 ,  H04L1/06 ,  H04L25/0224 ,  H04W72/042

Abstract: A method includes receiving, at a communication terminal, signals from a group of cells that cooperate in a Coordinated Multipoint (CoMP) transmission scheme. Signaling that specifies a CoMP resource management (CRM) set is received at the communication terminal. The CRM set includes a subset of the cells in the group for which the communication terminal is to perform signal measurements. A size of the CRM set is restricted to a predefined maximum size. The signal measurements are performed at the communication terminal only on the signals received from one or more of the cells in the CRM set. The signal measurements performed on the one or more of the cells in the CRM set are reported from the communication terminal.

Abstract translation: 一种方法包括在通信终端处接收来自以协调多点（CoMP）传输方案协作的一组小区的信号。 在通信终端处接收指定CoMP资源管理（CRM）集合的信令。 CRM集合包括通信终端要进行信号测量的组中的小区的子集。 CRM集的大小限于预定义的最大大小。 信号测量仅在通信终端仅在从CRM集合中的一个或多个小区接收到的信号上执行。 从通信终端报告对CRM集中的一个或多个小区执行的信号测量。

公开(公告)号：US20130114654A1

公开(公告)日：2013-05-09

申请号：US13669476

申请日：2012-11-06

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Krishna Srikanth Gomadam

IPC: H04B1/38

CPC classification number: H04B7/0634 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/065 ,  H04B7/10

Abstract: A method includes receiving in a mobile communication terminal a precoded Multiple-Input Multiple-Output (MIMO) signal, which includes first and second signal components transmitted at respective different first and second polarizations. A difference between respective signal magnitudes of the first and second signal components received in the terminal is estimated in the terminal. Feedback information, which includes at least an indication of the difference between the signal magnitudes, is calculated and transmitted from the terminal.

Abstract translation: 一种方法包括在移动通信终端中接收预编码的多输入多输出（MIMO）信号，其包括在各自不同的第一和第二偏振处发送的第一和第二信号分量。 在终端中估计在终端中接收的第一和第二信号分量的各个信号幅度之间的差异。 至少包括信号幅度差的指示的反馈信息被计算并从终端发送。

公开(公告)号：US09020058B2

公开(公告)日：2015-04-28

申请号：US13669476

申请日：2012-11-06

Applicant: Marvell World Trade Ltd.

Inventor： Krishna Srikanth Gomadam

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/06 ,  H04B7/10

CPC classification number: H04B7/0634 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/065 ,  H04B7/10

Abstract: A method includes receiving in a mobile communication terminal from a base station a precoded Multiple-Input Multiple-Output (MIMO) signal, which includes a first signal component transmitted by one or more first antennas of the base station at a first polarization, and further comprises a second signal component transmitted by one or more second antennas of the base station at a second polarization, different from the first polarization. A difference between respective signal magnitudes of the first signal component having the first polarization and the second signal component having the second polarization that have been received in the terminal is estimated in the terminal. Feedback information, which requests the base station to precode subsequent MIMO signals with a precoding matrix that is specified as a function of the difference between the signal magnitudes, is calculated and transmitted from the terminal.

Abstract translation: 一种方法包括在移动通信终端中从基站接收预编码的多输入多输出（MIMO）信号，所述预编码多输入多输出（MIMO）信号包括由第一极化的基站的一个或多个第一天线发送的第一信号分量， 包括基站的一个或多个第二天线以与第一极化不同的第二极化发送的第二信号分量。 在终端中估计具有第一极化的第一信号分量的各个信号幅度与已经在终端中接收的具有第二极化的第二信号分量之间的差异。 反馈信息，其请求基站使用以信号幅度之差指定的预编码矩阵对后续的MIMO信号进行预编码，并从终端发送。

公开(公告)号：US20130122953A1

公开(公告)日：2013-05-16

申请号：US13672727

申请日：2012-11-09

Applicant: Marvell World Trade Ltd.

Inventor： Yan Zhang ,  Krishna Srikanth Gomadam

IPC: H04W24/02

CPC classification number: H04L5/0057 ,  H04L1/0029 ,  H04L5/0035 ,  H04W24/02 ,  H04W28/06

Abstract: A method includes receiving in a mobile communication terminal signals from multiple cells that coordinate transmission of the signals with one another in a Cooperative Multipoint (CoMP) scheme. At least first and second Channel Quality Indicators (CQIs), for respective communication channels over which the signals are received, are calculated in the terminal based on the received signals. The second CQI is differentially encoded relative to the first CQI. Feedback information, including the first CQI and the differentially-encoded second CQI, is transmitted from the terminal.

Abstract translation: 一种方法包括：在协作多点（CoMP）方案中，在移动通信终端中接收来自多个小区的信号，以协调信号彼此的传输。 至少第一和第二信道质量指示符（CQI），对于在其上接收信号的各个通信信道，在终端中基于所接收的信号来计算。 第二CQI相对于第一CQI进行差分编码。 从终端发送包括第一CQI和差分编码的第二CQI的反馈信息。

公开(公告)号：US09307523B2

公开(公告)日：2016-04-05

申请号：US13719241

申请日：2012-12-19

Applicant: Marvell World Trade Ltd.

Inventor： Krishna Srikanth Gomadam

IPC: H04W72/04 ,  H04L25/03

CPC classification number: H04W72/0406 ,  H04B7/024 ,  H04B7/0626 ,  H04L25/03955

Abstract: A method includes controlling a set of transmission points, which are configured to operate in accordance with a Coordinated Multipoint (CoMP) transmission scheme, to simultaneously transmit a composite Reference Signal (RS) to a mobile communication terminal. Feedback, which is indicative of a response of a composite communication channel between the transmission points and the terminal, is received from the terminal. The feedback is estimated in the terminal based on the composite RS received in the terminal from the transmission points. Subsequent transmission from the transmission points is configured based on the received feedback.

Abstract translation: 一种方法包括控制一组发送点，其被配置为根据协调多点（CoMP）传输方案进行操作，以同时向移动通信终端发送复合参考信号（RS）。 从终端接收表示发送点和终端之间的复合通信信道的响应的反馈。 基于在终端中从传输点接收的复合RS估计终端中的反馈。 基于所接收的反馈来配置从发送点的后续发送。

公开(公告)号：US09137814B2

公开(公告)日：2015-09-15

申请号：US13774654

申请日：2013-02-22

Applicant: Marvell World Trade Ltd.

Inventor： Jihwan P. Choi ,  Jiwon S. Han ,  Krishna Srikanth Gomadam ,  Yakun Sun ,  Mingguang Xu ,  Hui-Ling Lou

IPC: H04W4/00 ,  H04W72/12 ,  H04L1/18 ,  H04L1/00

CPC classification number: H04W72/12 ,  H04L1/0001 ,  H04L1/1812 ,  H04L1/1848 ,  H04L1/188

Abstract: Systems, methods, apparatus, and techniques are provided for retransmitting packets of data. A Radio Link Control (RLC) layer data packet is generated, and the RLC layer data packet is converted to one or more physical (PHY) layer data packets. The one or more PHY layer data packets are transmitted. At least one of a hybrid automatic transmission request (HARQ) acknowledgement (ACK) message and a HARQ negative acknowledgment (NACK) message is received from a receiver in response to transmission of the one or more PHY layer data packets. It is determined whether the at least one of the HARQ ACK message and the HARQ NACK message represents a automatic transmission request (ARQ) ACK message or a ARQ NACK message.

Abstract translation: 提供了用于重传数据分组的系统，方法，装置和技术。 产生无线电链路控制（RLC）层数据分组，并且将RLC层数据分组转换成一个或多个物理（PHY）层数据分组。 发送一个或多个PHY层数据分组。 响应于一个或多个PHY层数据分组的传输，从接收机接收混合自动传输请求（HARQ）确认（ACK）消息和HARQ否定确认（NACK）消息中的至少一个。 确定HARQ ACK消息和HARQ NACK消息中的至少一个是否表示自动传输请求（ARQ）ACK消息或ARQ NACK消息。