公开(公告)号：US09503237B2

公开(公告)日：2016-11-22

申请号：US13879273

申请日：2013-03-26

Applicant: Sairamesh Nammi ,  Bo Göransson ,  Erik Larsson

Inventor： Sairamesh Nammi ,  Bo Göransson ,  Erik Larsson

IPC: H04W4/00 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04L5/005 ,  H04L25/0224

Abstract: A radio network node (28) comprises a transmitter/receiver (48, 82, 93) configured to communicate over an air interface (32) with a wireless terminal (30); a scheduler (46, 84); and a order signal determination means (46, 62, 84). The scheduler (46, 84) schedules pilot signals, including common pilot signals transmitted for channel estimation, for transmission over the air interface to the wireless terminal. The order signal determination means (46, 62, 84) is configured to make a selective determination whether additional pilot signals for data demodulation are also to be transmitted to the wireless terminal (30) in addition to the common pilot signals transmitted for the channel estimation. The wireless terminal (30) comprises a transmitter and receiver (50, 101, 112) and pilot selection means (68). The pilot selection means (68) is configured to make a determination regarding which pilot signals transmitted by the radio network node are to be utilized by the wireless terminal. The pilot signals transmitted by the radio network node include common pilot signals transmitted for channel estimation and additional pilot signals transmitted for data demodulation.

Abstract translation: 无线电网络节点（28）包括被配置为通过空中接口（32）与无线终端（30）进行通信的发射机/接收机（48,82,93）; 调度器（46,84）; 和订单信号确定装置（46,62,84）。 调度器（46,84）调度导频信号，包括发送用于信道估计的公共导频信号，以通过空中接口传送到无线终端。 命令信号确定装置（46,62,84）被配置为除了为信道估计发送的公共导频信号之外还进行用于数据解调的附加导频信号是否也被发送到无线终端（30）的选择性确定 。 无线终端（30）包括发射机和接收机（50,101,112）和飞行员选择装置（68）。 导频选择装置（68）被配置为确定由无线电网络节点发送的哪些导频信号将被无线终端利用。 由无线电网络节点发送的导频信号包括用于信道估计发送的公共导频信号和用于数据解调发送的附加导频信号。

公开(公告)号：US09178585B2

公开(公告)日：2015-11-03

申请号：US13826000

申请日：2013-03-15

Applicant: Nianshan Shi ,  Cagatay Konuskan ,  Sairamesh Nammi

Inventor： Nianshan Shi ,  Cagatay Konuskan ,  Sairamesh Nammi

IPC: H04B7/00 ,  H04B7/04 ,  H04B7/06 ,  H04W52/32

CPC classification number: H04B7/0426 ,  H04B7/0413 ,  H04B7/0684 ,  H04W52/325

Abstract: Embodiments of the present disclosure provide methods and apparatus for configuring additional CPICHs, e.g. third CPICH, fourth CPICH, etc., to support MIMO transmissions of rank three or higher. The additional CPICHs may be configured with two or more power levels. A radio network controller (RNC) sends configuration information for the additional CPICHs to a serving base station in a cell to configure the additional CPICHs. The additional CPICHs can be configured to have a fixed power level, or multiple power levels. When the additional CPICHs are configured with multiple power levels, the base station can select the appropriate power level for each CPICH in dependence on current scheduling decisions in order to reduce inference.

Abstract translation: 本公开的实施例提供了用于配置附加CPICH的方法和装置，例如， 第三CPICH，第四CPICH等，以支持等级三或更高的MIMO传输。 附加CPICH可以配置有两个或更多个功率电平。 无线电网络控制器（RNC）将用于附加CPICH的配置信息发送到小区中的服务基站以配置附加CPICH。 附加CPICH可被配置为具有固定的功率电平或多个功率电平。 当附加CPICH配置有多个功率电平时，基站可以根据当前的调度决定为每个CPICH选择适当的功率电平，以便减少推断。

公开(公告)号：US20150003553A1

公开(公告)日：2015-01-01

申请号：US14372403

申请日：2012-01-23

Applicant: Sairamesh Nammi

Inventor： Sairamesh Nammi

IPC: H04B7/04 ,  H04W64/00

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/063 ,  H04B7/0639 ,  H04W64/006

Abstract: Communication may be provided from a first communication device over a multiple-input-multiple-output (MIMO) wireless channel to a second communication device. More particularly, feedback may be received at the first communication device from the second communication device, with the feedback including a precoding matrix selection from the second communication device. A representation of a speed of the second communication device relative to the first communication device may be generated. Responsive to the representation of the speed of the second communication device indicating a speed that is greater than a selection threshold, a generalized precoding matrix may be selected that is different than a precoding matrix indicated by the precoding matrix selection from the second communication device. Related devices are also discussed.

Abstract translation: 可以通过多输入多输出（MIMO）无线信道从第一通信设备向第二通信设备提供通信。 更具体地，可以在第一通信设备处从第二通信设备接收反馈，反馈包括来自第二通信设备的预编码矩阵选择。 可以生成第二通信设备相对于第一通信设备的速度的表示。 响应于指示速度大于选择阈值的第二通信设备的速度的表示，可以选择与由第二通信设备的预编码矩阵选择指示的预编码矩阵不同的广义预编码矩阵。 还讨论了相关设备。

公开(公告)号：US20110077040A1

公开(公告)日：2011-03-31

申请号：US12993330

申请日：2009-06-25

Applicant: Sairamesh Nammi ,  Shankar Venkatraman ,  Gaurav Hemrajani ,  Ashvin Chheda ,  Lai King Tee ,  Neng Wang ,  Kathi-Ravetpillai Givanegan

Inventor： Sairamesh Nammi ,  Shankar Venkatraman ,  Gaurav Hemrajani ,  Ashvin Chheda ,  Lai King Tee ,  Neng Wang ,  Kathi-Ravetpillai Givanegan

IPC: H04B1/00 ,  H04B7/00

CPC classification number: H04B7/0417 ,  H04B7/0619 ,  H04B7/063 ,  H04L5/0096 ,  H04W4/20 ,  H04W72/0413

Abstract: To report feedback information regarding a wireless channel, a mobile station determines whether a predefined condition is satisfied. In response to determining that the predefined condition is satisfied, feedback information regarding an individual one of plural subbands of the wireless channel is included in a first report to be sent to a base station. In response to determining that the predefined condition is not satisfied, aggregate feedback information regarding the plural subbands is included in a second report to be sent to the base station.

Abstract translation: 为了报告关于无线信道的反馈信息，移动台确定是否满足预定条件。 响应于确定满足预定条件，关于无线信道的多个子带中的各个子带的反馈信息被包括在要发送到基站的第一报告中。 响应于确定不满足预定义条件，关于多个子带的聚合反馈信息被包括在要发送到基站的第二报告中。

公开(公告)号：US09166659B2

公开(公告)日：2015-10-20

申请号：US14372403

申请日：2012-01-23

Applicant: Sairamesh Nammi

Inventor： Sairamesh Nammi

IPC: H04B7/04 ,  H04B7/06 ,  H04W64/00

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/063 ,  H04B7/0639 ,  H04W64/006

Abstract: Communication may be provided from a first communication device over a multiple-input-multiple-output (MIMO) wireless channel to a second communication device. More particularly, feedback may be received at the first communication device from the second communication device, with the feedback including a precoding matrix selection from the second communication device. A representation of a speed of the second communication device relative to the first communication device may be generated. Responsive to the representation of the speed of the second communication device indicating a speed that is greater than a selection threshold, a generalized precoding matrix may be selected that is different than a precoding matrix indicated by the precoding matrix selection from the second communication device. Related devices are also discussed.

Abstract translation: 可以通过多输入多输出（MIMO）无线信道从第一通信设备向第二通信设备提供通信。 更具体地，可以在第一通信设备处从第二通信设备接收反馈，反馈包括来自第二通信设备的预编码矩阵选择。 可以生成第二通信设备相对于第一通信设备的速度的表示。 响应于指示速度大于选择阈值的第二通信设备的速度的表示，可以选择与由第二通信设备的预编码矩阵选择指示的预编码矩阵不同的广义预编码矩阵。 还讨论了相关设备。

公开(公告)号：US20150222407A1

公开(公告)日：2015-08-06

申请号：US14422998

申请日：2012-08-24

Applicant: Sairamesh Nammi ,  Cagatay Konuskan ,  Namir Lidian

Inventor： Sairamesh Nammi ,  Cagatay Konuskan ,  Namir Lidian

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04L25/03929 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0697 ,  H04L1/1829 ,  H04L1/208 ,  H04L5/0055

Abstract: A method of operating a terminal in a radio access network may include receiving a transmission of first and second data blocks over respective first and second multiple-input-multiple-output (MIMO) layers during a transmission time interval (TTI). Respective first and second demodulated codewords may be generated corresponding to the transmission of the first and second data blocks, and the first and second demodulated codewords may be decoded. Responsive to failure decoding the first demodulated codeword and success decoding the second demodulated codeword, a negative acknowledgement may be transmitted indicating failure receiving the first and second data blocks. Related terminals are also discussed.

Abstract translation: 在无线电接入网络中操作终端的方法可以包括在传输时间间隔（TTI）期间在相应的第一和第二多输入多输出（MIMO）层上接收第一和第二数据块的传输。 可以对应于第一和第二数据块的传输来生成相应的第一和第二解调码字，并且可以对第一和第二解调码字进行解码。 响应于对第一解调码字进行故障解码并成功解码第二解调码字，可以发送指示接收第一和第二数据块的故障的否定确认。 还讨论了相关终端。

公开(公告)号：US09048908B2

公开(公告)日：2015-06-02

申请号：US13610319

申请日：2012-09-11

Applicant: Sairamesh Nammi

Inventor： Sairamesh Nammi

IPC: H04B7/06

CPC classification number: H04B7/0639 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0634

Abstract: Multiple antennas employed at the transmitter and receiver can significantly increase a MIMO system capacity, especially when channel knowledge is available at the transmitter. Channel state information may be provided to the transmitter by the receiver in a codebook based precoding feedback. An approach is proposed in which the receiver conducts a search of precoder elements of a codebook to provide the transmitter with rank information and precoder control index that enhances capacity. Unlike the conventional exhaustive search, the proposed approach reduces complexity by reducing the search space of precoder elements for consideration. Performance loss is minimized by reducing the search space of higher rank precoder elements and keeping the search space of lower rank precoder elements.

Abstract translation: 在发射机和接收机上使用的多个天线可以显着增加MIMO系统容量，特别是当发射机具​​有信道知识时。 信道状态信息可以由基于码本的预编码反馈中的接收机提供给发射机。 提出了一种方法，其中接收机对码本的预编码器元素进行搜索，以向发射机提供增强容量的等级信息和预编码器控制索引。 与常规穷举搜索不同，所提出的方法通过减少预编码器元素的搜索空间来考虑来降低复杂度。 通过减少较高级预编码器元素的搜索空间并保持较低等级预编码器元素的搜索空间，可以最大限度地降低性能损失。

公开(公告)号：US20140079144A1

公开(公告)日：2014-03-20

申请号：US13826000

申请日：2013-03-15

Applicant: Nianshan Shi ,  Cagatay Konuskan ,  Sairamesh Nammi

Inventor： Nianshan Shi ,  Cagatay Konuskan ,  Sairamesh Nammi

IPC: H04B7/04

CPC classification number: H04B7/0426 ,  H04B7/0413 ,  H04B7/0684 ,  H04W52/325

Abstract: Embodiments of the present disclosure provide methods and apparatus for configuring additional CPICHs, e.g. third CPICH, fourth CPICH, etc., to support MIMO transmissions of rank three or higher. The additional CPICHs may be configured with two or more power levels. A radio network controller (RNC) sends configuration information for the additional CPICHs to a serving base station in a cell to configure the additional CPICHs. The additional CPICHs can be configured to have a fixed power level, or multiple power levels. When the additional CPICHs are configured with multiple power levels, the base station can select the appropriate power level for each CPICH in dependence on current scheduling decisions in order to reduce inference.

Abstract translation: 本公开的实施例提供了用于配置附加CPICH的方法和装置，例如， 第三CPICH，第四CPICH等，以支持等级三或更高的MIMO传输。 附加CPICH可以配置有两个或更多个功率电平。 无线电网络控制器（RNC）将用于附加CPICH的配置信息发送到小区中的服务基站以配置附加CPICH。 附加CPICH可被配置为具有固定的功率电平或多个功率电平。 当附加CPICH配置有多个功率电平时，基站可以根据当前的调度决定为每个CPICH选择适当的功率电平，以便减少推断。

公开(公告)号：US20120320804A1

公开(公告)日：2012-12-20

申请号：US13164222

申请日：2011-06-20

Applicant: Sairamesh Nammi ,  Nishant Batra

Inventor： Sairamesh Nammi ,  Nishant Batra

IPC: H04J3/00 ,  H04W64/00

CPC classification number: H04L1/1607 ,  H04L1/0029 ,  H04L1/003 ,  H04L1/1621 ,  H04L1/1825 ,  H04L1/1854 ,  H04L2001/125

Abstract: A base station of a wireless time division duplex network which communicates with a UE having a network interface unit. The base station having a processing unit which determines to use either ACK/NAK bundling or ACK/NAK multiplexing to communicate with the UE through the network interface unit based on predetermined criteria. A method of a base station of a wireless time division duplex network which communicates with a UE to choose either ACK/NAK bundling or ACK/NAK multiplexing having the steps of determining with a processing unit of the base station to use either ACK/NAK bundling or ACK/NAK multiplexing to communicate with the UE through a network interface unit of the base station based on predetermined criteria. There is the step of communicating with the UE through the network interface unit using either ACK/NAK bundling or ACK/NAK multiplexing based on the predetermined criteria.

Abstract translation: 一种与具有网络接口单元的UE通信的无线时分双工网络的基站。 基站具有处理单元，该处理单元基于预定标准，通过网络接口单元确定使用ACK / NAK绑定或ACK / NAK复用来与UE进行通信。 一种无线时分双工网络的基站的方法，其与UE通信以选择ACK / NAK绑定或ACK / NAK复用，所述ACK / NAK绑定或ACK / NAK复用具有以下步骤：使用所述基站的处理单元来使用ACK / NAK绑定 或ACK / NAK复用，以基于预定标准通过基站的网络接口单元与UE进行通信。 基于预定准则，通过网络接口单元使用ACK / NAK绑定或ACK / NAK复用来进行与UE通信的步骤。

公开(公告)号：US08295331B2

公开(公告)日：2012-10-23

申请号：US12851659

申请日：2010-08-06

Applicant: Sairamesh Nammi ,  Narendra Tilwani

Inventor： Sairamesh Nammi ,  Narendra Tilwani

IPC: H04B7/10 ,  H04B1/707

CPC classification number: H04B1/71072

Abstract: A method, apparatus, and radio receiver system for canceling multi-user interference in a single-carrier radio communication system. A front-end receiver such as a RAKE receiver receives a radio signal formatted in a sequence of frames, and outputs a plurality of user signals. An ordering unit determines for a current frame, an order in which to decode and remove the interference contributions of the plurality of user signals. The order may be based on a list of user signals sorted in the order of descending signal-to-interference-plus-noise ratio (SINR), modified by the success or failure of attempts to decode each user signal. A frame calculator determines a coherence time, which is used to calculate the number of subsequent frames in which the user signals are decoded in the determined order.

Abstract translation: 一种用于在单载波无线电通信系统中消除多用户干扰的方法，装置和无线电接收机系统。 诸如RAKE接收机的前端接收机接收以帧序列格式化的无线电信号，并输出多个用户信号。 订购单元确定当前帧，解码和去除多个用户信号的干扰贡献的顺序。 该顺序可以基于按照下降的信号与干扰加噪声比（SINR）的顺序排列的用户信号的列表，由通过尝试解码每个用户信号的成功或失败而修改。 帧计算器确定相干时间，其用于以确定的顺序计算用户信号被解码的后续帧的数量。