公开(公告)号：US08818385B2

公开(公告)日：2014-08-26

申请号：US13329127

申请日：2011-12-16

申请人： Dennis Hui ,  Kambiz Zangi

发明人： Dennis Hui ,  Kambiz Zangi

IPC分类号： H04W52/30

CPC分类号： H04B7/024 ,  H04B7/0465 ,  H04W52/346 ,  H04W52/365

摘要： In a Coordinated Multi-point (CoMP) system, the base station (BS) in each serving cell (or sector) is allowed to use not only its own antennas, but also the antennas of neighboring BSs to transmit to mobile terminals in the serving cell to form a floating CoMP cell. The serving BS in each floating CoMP cell computes tentative linear precoding weights for transmissions from the coordinating BSs in the floating CoMP cell to users in the serving cell of the floating CoMP cell. The serving BS determines the power availability for transmit antennas in the floating CoMP cell that are shared with other floating CoMP cells, and scales the tentative precoding weights based on the power availability of the shared transmit antennas to determine final precoding weights so that the power constraints of the shared transmit antennas will not be violated.

摘要翻译： 在协调多点（CoMP）系统中，每个服务小区（或扇区）中的基站（BS）被允许不仅使用其自己的天线，而且还使用相邻BS的天线来发送给服务中的移动终端 细胞形成浮游CoMP细胞。 每个浮动CoMP单元中的服务BS为浮动CoMP小区中的协调BS的传输计算用于在浮动CoMP小区的服务小区中的用户的临时线性预编码权重。 服务BS确定与其他浮动CoMP小区共享的浮动CoMP小区中的发射天线的功率可用性，并且基于共享发射天线的功率可用性来缩放初步预编码权重，以确定最终预编码权重，使得功率约束 的共享发射天线将不会被违反。

公开(公告)号：US08737298B2

公开(公告)日：2014-05-27

申请号：US13045830

申请日：2011-03-11

申请人： Dennis Hui ,  Shing-Wa Wong ,  Jung-Fu Cheng ,  Jiann-Ching Guey ,  Kambiz Zangi

发明人： Dennis Hui ,  Shing-Wa Wong ,  Jung-Fu Cheng ,  Jiann-Ching Guey ,  Kambiz Zangi

IPC分类号： H04W4/00

CPC分类号： H04L5/0073 ,  H04B7/024 ,  H04B7/0452 ,  H04L5/0035 ,  H04W92/12 ,  H04W92/20

摘要： The amount of multi-antenna signals to be transmitted over the backhaul in a Coordinated MultiPoint (CoMP) system from the central processor (CP) to each base station is reduced. Embodiments of the present invention exploit characteristics of the underlying signal structure, and distribute some baseband processing functionalities—such as channel coding and the application of the multi-user precoding—from the CP to the remote base stations. Additionally, in some embodiments the non-precoded parts of multi-antenna signals are broadcast from the CP to all base stations in the CoMP system, to further reduce the burden on backhaul communications. In one embodiment, the backhaul network is a Gigabit-capable Passive Optical Network (GPON).

摘要翻译： 通过协调多点（CoMP）系统从中央处理器（CP）到每个基站的回程传输的多天线信号的数量减少。 本发明的实施例利用底层信号结构的特征，并将一些基带处理功能（诸如信道编码和多用户预编码的应用）从CP分发到远程基站。 此外，在一些实施例中，多天线信号的非预编码部分从CP广播到CoMP系统中的所有基站，以进一步减少回程通信的负担。 在一个实施例中，回程网络是千兆位无源光网络（GPON）。

公开(公告)号：US08666333B2

公开(公告)日：2014-03-04

申请号：US11275111

申请日：2005-12-12

申请人： Kambiz Zangi

发明人： Kambiz Zangi

IPC分类号： H04B1/02

CPC分类号： H01Q3/34 ,  H01Q1/246 ,  H04B1/02 ,  H04B7/0617 ,  H04W52/42

摘要： Diversity arrays of antenna elements and phased arrays of antenna elements can be used to produce omni-directional transmissions. Communication signaling is produced based on a desired communication signal that is to be transmitted omni-directionally. In response to the communication signaling, the antenna elements cooperate to effect approximately omni-directional antenna transmission of the desired communication signal.

摘要翻译： 天线元件的分集阵列和天线元件的相控阵列可用于产生全向传输。 基于要全向传输的所需通信信号产生通信信令。 响应于通信信令，天线元件协作以实现所需通信信号的大致全向天线传输。

公开(公告)号：US08526992B2

公开(公告)日：2013-09-03

申请号：US12746372

申请日：2008-01-08

申请人： Dennis Hui ,  Kambiz Zangi

发明人： Dennis Hui ,  Kambiz Zangi

IPC分类号： H04W52/30

CPC分类号： H04B7/0617 ,  H04B7/024 ,  H04B7/0426 ,  H04B7/0465 ,  H04W52/346

摘要： In a distributed antenna system that includes a plurality of transmitters and a controller, a method, performed by the controller, may be characterized by performing dirty-paper coding on downlink transmissions to users based on an order of the users, calculating beamforming vectors to provide that each of the downlink transmissions associated with each of the users does not interfere with other users, and maximizing, based on the calculated beamforming vectors, a data rate subject to a power constraint of the distributed antenna system.

摘要翻译： 在包括多个发射机和控制器的分布式天线系统中，由控制器执行的方法的特征在于，基于用户的次序对用户的下行链路传输执行脏纸编码，计算波束形成向量以提供 与每个用户相关联的每个下行链路传输不会干扰其他用户，并且基于所计算的波束形成向量，最大化受到分布式天线系统的功率约束的数据速率。

公开(公告)号：US08432993B2

公开(公告)日：2013-04-30

申请号：US12810360

申请日：2007-12-27

申请人： Kambiz Zangi ,  Leonid Krasny

发明人： Kambiz Zangi ,  Leonid Krasny

IPC分类号： H04B7/02

CPC分类号： H04B7/0413 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0244 ,  H04L27/2647

摘要： An apparatus for estimating a channel response associated with a multiple input/multiple output (MIMO) system includes an antenna that receives multiple pilot symbols, each of the multiple pilot symbols transmitted from a different one of multiple transmit antennas of a transmitter in the MIMO system. The apparatus further includes a channel estimator that determines spatial, time and frequency correlations of channels of the MIMO system among the multiple transmit antennas when estimating a channel response associated with the MIMO system based on multiple ones of the received plurality of pilot symbols.

摘要翻译： 用于估计与多输入/多输出（MIMO）系统相关联的信道响应的装置包括：天线，其接收多个导频符号，所述多个导频符号中的每一个从MIMO系统中的发射机的多个发射天线中的不同发射天线发送 。 该装置还包括信道估计器，其基于接收到的多个导频符号中的多个导频符号估计与MIMO系统相关联的信道响应，确定MIMO系统在多个发射天线中的信道的空间，时间和频率相关性。

公开(公告)号：US20120275327A1

公开(公告)日：2012-11-01

申请号：US13491204

申请日：2012-06-07

申请人： Kambiz Zangi ,  Dennis Hui ,  Abdulrauf Hafeez

发明人： Kambiz Zangi ,  Dennis Hui ,  Abdulrauf Hafeez

IPC分类号： H04W76/04 ,  H04W24/02

CPC分类号： H04L1/0001 ,  H04J11/0053 ,  H04L1/0022 ,  H04L1/0034 ,  H04L1/02 ,  H04L5/0035 ,  H04L5/006 ,  H04L5/0073

摘要： A Coordinated MultiPoint (CoMP) cell controller performs network-centric link adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the inter-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for an upcoming transmission duration (such as a TTI).

摘要翻译： 协调多点（CoMP）小区控制器在CoMP小区中为用户设备（UE）执行以网络为中心的链路自适应。 CoMP小区控制器从CoMP小区中的UE接收至少不频繁的信道估计，从​​UE估计UE处的下行链路信道和热噪声。 CoMP小区控制器知道将在UE处接收的期望信号，以及由CoMP小区中的其他UE的传输引起的对UE的CoMP小区干扰。 CoMP小区从UE接收由其他CoMP小区的传输引起的CoMP间干扰的干扰。 基于下行链路信道质量，期望信号，CoMP间小区干扰，CoMP间干扰和热噪声，CoMP小区控制器通过选择调制和编码方案以及其他传输参数来执行链路自适应，用于 即将到来的传输持续时间（如TTI）。

公开(公告)号：US20120230691A1

公开(公告)日：2012-09-13

申请号：US13045830

申请日：2011-03-11

申请人： Dennis Hui ,  Shing-Wa Wong ,  Jung-Fu Cheng ,  Jiann-Ching Guey ,  Kambiz Zangi

发明人： Dennis Hui ,  Shing-Wa Wong ,  Jung-Fu Cheng ,  Jiann-Ching Guey ,  Kambiz Zangi

IPC分类号： H04L25/49 ,  H04J14/00

CPC分类号： H04L5/0073 ,  H04B7/024 ,  H04B7/0452 ,  H04L5/0035 ,  H04W92/12 ,  H04W92/20

摘要： The amount of multi-antenna signals to be transmitted over the backhaul in a Coordinated MultiPoint (CoMP) system from the central processor (CP) to each base station is reduced. Embodiments of the present invention exploit characteristics of the underlying signal structure, and distribute some baseband processing functionalities—such as channel coding and the application of the multi-user precoding—from the CP to the remote base stations. Additionally, in some embodiments the non-precoded parts of multi-antenna signals are broadcast from the CP to all base stations in the CoMP system, to further reduce the burden on backhaul communications. In one embodiment, the backhaul network is a Gigabit-capable Passive Optical Network (GPON).

摘要翻译： 通过协调多点（CoMP）系统从中央处理器（CP）到每个基站的回程传输的多天线信号的数量减少。 本发明的实施例利用底层信号结构的特征，并将一些基带处理功能（诸如信道编码和多用户预编码的应用）从CP分发到远程基站。 此外，在一些实施例中，多天线信号的非预编码部分从CP广播到CoMP系统中的所有基站，以进一步减少回程通信的负担。 在一个实施例中，回程网络是千兆位无源光网络（GPON）。

公开(公告)号：US08238303B2

公开(公告)日：2012-08-07

申请号：US12324073

申请日：2008-11-26

申请人： Kambiz Zangi ,  Erik Dahlman ,  Dennis Hui

发明人： Kambiz Zangi ,  Erik Dahlman ,  Dennis Hui

IPC分类号： H04J3/00

CPC分类号： H04L5/0051 ,  H04L5/0007 ,  H04L5/0062 ,  H04L25/0202

摘要： The present invention provides a method of generating mutually orthogonal reference signals for different user terminals in and OFDM system that span different but overlapping subcarriers. The subcarriers allocated to the user terminals are divided into a plurality of non-overlapping subcarrier blocks. Each user terminal is then allocated one or more subcarrier blocks. For each subcarrier block, a user terminal is assigned a reference signal comprising a base reference sequence and a linear phase rotation. To ensure mutual orthogonality among all user terminals, user terminals allocated the same subcarrier block use the same base reference sequence with different linear phase rotations.

摘要翻译： 本发明提供了一种对跨越不同但重叠的子载波的不同用户终端和OFDM系统生成相互正交参考信号的方法。 分配给用户终端的副载波被划分成多个不重叠的副载波块。 然后，每个用户终端被分配一个或多个子载波块。 对于每个子载波块，向用户终端分配包括基本参考序列和线性相位旋转的参考信号。 为了确保所有用户终端之间的相互正交性，分配相同子载波块的用户终端使用具有不同线性相位旋转的相同的基准参考序列。

公开(公告)号：US08208397B2

公开(公告)日：2012-06-26

申请号：US12555966

申请日：2009-09-09

申请人： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04L1/00

CPC分类号： H04B17/0047 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/0639 ,  H04B17/336 ,  H04B17/364 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224

摘要： A UE in a wireless communication network transmits succinct, direct channel state information to the network, enabling coordinated multipoint calculations such as joint processing, without substantially increasing uplink overhead. The UE receives and processes reference symbols over a set of non-uniformly spaced sub-carriers, selected according to a scheme synchronized to the network. The frequency response for each selected sub-carrier is estimated conventionally, and the results quantized and transmitted to the network on an uplink control channel. The non-uniform sub-carrier selection may be synchronized to the network in a variety of ways.

摘要翻译： 无线通信网络中的UE向网络发送简洁的直接信道状态信息，实现诸如联合处理之类的协调多点计算，而基本上不增加上行链路开销。 UE根据与网络同步的方案选择的一组非均匀间隔的子载波上接收和处理参考符号。 对于每个选择的子载波的频率响应是常规估计的，并且在上行链路控制信道上量化并传输到网络。 非均匀子载波选择可以以各种方式与网络同步。

公开(公告)号：US20120087310A1

公开(公告)日：2012-04-12

申请号：US13329127

申请日：2011-12-16

申请人： Dennis Hui ,  Kambiz Zangi

发明人： Dennis Hui ,  Kambiz Zangi

IPC分类号： H04W40/00

CPC分类号： H04B7/024 ,  H04B7/0465 ,  H04W52/346 ,  H04W52/365

摘要： In a Coordinated Multi-point (CoMP) system, the base station (BS) in each serving cell (or sector) is allowed to use not only its own antennas, but also the antennas of neighboring BSs to transmit to mobile terminals in the serving cell to form a floating CoMP cell. The serving BS in each floating CoMP cell computes tentative linear precoding weights for transmissions from the coordinating BSs in the floating CoMP cell to users in the serving cell of the floating CoMP cell. The serving BS determines the power availability for transmit antennas in the floating CoMP cell that are shared with other floating CoMP cells, and scales the tentative precoding weights based on the power availability of the shared transmit antennas to determine final precoding weights so that the power constraints of the shared transmit antennas will not be violated.

摘要翻译： 在协调多点（CoMP）系统中，每个服务小区（或扇区）中的基站（BS）被允许不仅使用其自己的天线，而且还使用相邻BS的天线来发送给服务中的移动终端 细胞形成浮游CoMP细胞。 每个浮动CoMP单元中的服务BS为浮动CoMP小区中的协调BS的传输计算用于在浮动CoMP小区的服务小区中的用户的临时线性预编码权重。 服务BS确定与其他浮动CoMP小区共享的浮动CoMP小区中的发射天线的功率可用性，并且基于共享发射天线的功率可用性来缩放初步预编码权重，以确定最终预编码权重，使得功率约束 的共享发射天线将不会被违反。