公开(公告)号：US20120188972A1

公开(公告)日：2012-07-26

申请号：US13439759

申请日：2012-04-04

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： H04W72/04

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：US08199708B2

公开(公告)日：2012-06-12

申请号：US12346333

申请日：2008-12-30

申请人： Kambiz Zangi

发明人： Kambiz Zangi

IPC分类号： H04J11/00 ,  H04W4/00 ,  H04K1/10 ,  H04L27/28 ,  H04L1/02 ,  H04L27/00 ,  H04B7/02 ,  H04B7/10 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/006

摘要： A mobile communication system network node (NN) that serves user equipments (UEs) has fewer orthogonal reference signals (RSs) than a maximum number of UE antenna ports (APs) that can be served by the NN. A channel quality of a channel between the AP and the network node is ascertained for each of the APs. Whenever a number of APs of UEs served by the NN exceeds the number of RSs, all RSs are allocated to a subset of all of the APs by means of an allocation process such that: each RS is allocated to only one of the APs; each AP has no more than one RS allocated to it; and allocation decisions are a function of the channel qualities of the respective APs such that the higher the channel quality, the higher priority the corresponding AP is given as a candidate for receiving an RS allocation.

摘要翻译： 为用户设备（UE）提供的移动通信系统网络节点（NN）具有比可由NN服务的最大数量的UE天线端口（AP）更少的正交参考信号（RS）。 确定每个AP的AP和网络节点之间的信道的信道质量。 每当由NN服务的UE的多个AP超过RS的数量时，通过分配处理将所有RS分配给所有AP的子集，使得：每个RS仅分配给一个AP; 每个AP只有一个RS分配给它; 并且分配决定是各个AP的信道质量的函数，使得信道质量越高，相应的AP的较高优先级被给予作为用于接收RS分配的候选。

公开(公告)号：US20120115427A1

公开(公告)日：2012-05-10

申请号：US12941114

申请日：2010-11-08

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

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

IPC分类号： H04B17/00

CPC分类号： H04B7/0417 ,  H04B7/065 ,  H04B7/0658 ,  H04B7/066 ,  H04B7/0663

摘要： A receiver and a method are described herein for reducing an amount of channel state information related to a transmit channel correlation matrix φTX that is feedback to a transmitter. In addition, to a transmitter and a method are described herein for reconstructing the transmit channel correlation matrix φTX using the reduced channel state feedback information received from the receiver.

摘要翻译： 本文描述了一种接收机和方法，用于减少与发射机反馈的发射信道相关矩阵TX相关的信道状态信息量。 此外，本文描述了一种发射机和方法，用于使用从接收机接收的减少的信道状态反馈信息来重建发射信道相关矩阵＆phgr。TX。

公开(公告)号：US08121145B2

公开(公告)日：2012-02-21

申请号：US12255378

申请日：2008-10-21

申请人： Abdulrauf Hafeez ,  Kambiz Zangi

发明人： Abdulrauf Hafeez ,  Kambiz Zangi

IPC分类号： H04L12/43

CPC分类号： H04W74/0875

摘要： The method and apparatus described herein controls transmission from a plurality of user terminals to an access point on a random access channel in a wireless communication system. An access point determines an allowed information rate for each user terminal and transmits a rate control parameter indicative of the allowed information rates to the user terminals. The access point also computes a packet transmission probability and transmits the packet transmission probability to the use terminals on a common control channel. The packet transmission probability controls the number of user terminals that transmit in a given time slot to reduce collisions and increase the departure rate. The user terminals selectively transmit one or more packets to the access point in a time slot on the random access channel based on the allowed information rate and the packet transmission probability.

摘要翻译： 本文描述的方法和装置控制从无线通信系统中的多个用户终端到随机接入信道上的接入点的传输。 接入点确定每个用户终端的允许信息速率，并向用户终端发送指示允许信息速率的速率控制参数。 接入点还计算分组传输概率，并且在公共控制信道上向用户终端发送分组传输概率。 分组传输概率控制在给定时隙中发送的用户终端的数量，以减少冲突并提高出发率。 用户终端基于所允许的信息速率和分组传输概率，在随机接入信道的时隙中选择性地向接入点发送一个或多个分组。

公开(公告)号：US20100291936A1

公开(公告)日：2010-11-18

申请号：US12465864

申请日：2009-05-14

申请人： Kambiz Zangi ,  Jiann-Ching Guey ,  Dennis Hui

发明人： Kambiz Zangi ,  Jiann-Ching Guey ,  Dennis Hui

IPC分类号： H04W72/00 ,  H04B7/00

CPC分类号： H04W72/1231 ,  H04B7/024 ,  H04L5/0066 ,  H04L5/0091

摘要： Inter-CoMP cell interference is reduced by “extending” at least one CoMP cell to include UEs served by a neighboring CoMP cell in the extended CoMP cell's transmission calculations, so as to minimize interference to the UEs served by other CoMP cells. Each UE in a border sub-cell identifies neighboring CoMP cells from which it receives interference in excess of a threshold value, and includes the interfering CoMP cells in a close-neighbor set. The close-neighbor set is transmitted to the UE's serving CoMP cell controller. When downlink transmissions are scheduled to the target UE, the controller notifies the neighboring CoMP cells in the close-neighbor set, identifying the target UE. Those CoMP cells then use information about the channel conditions from their transmit antennas to the target UE receive antennas to compute transmissions to UEs they serve, with the constraint that interference to the target UE is below a predetermined level.

摘要翻译： 通过在扩展的CoMP小区的传输计算中“延伸”至少一个CoMP小区以包括由相邻CoMP小区服务的UE来减少CoMP间小区干扰，以便最小化对由其他CoMP小区服务的UE的干扰。 边界子小区中的每个UE识别出相邻的CoMP小区，其接收到超过阈值的干扰，并且包括邻近组中的干扰CoMP小区。 近邻集合被发送到UE的服务CoMP小区控制器。 当向目标UE调度下行链路传输时，控制器通知近邻集中的相邻CoMP小区，识别目标UE。 那些CoMP小区然后使用关于从其发射天线到目标UE接收天线的信道条件的信息来计算对它们所服务的UE的传输，其限制是对目标UE的干扰低于预定水平。

公开(公告)号：US20100272207A1

公开(公告)日：2010-10-28

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：US20100272074A1

公开(公告)日：2010-10-28

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： H04J3/00 ,  H03M13/05 ,  G06F11/10

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：US20100165930A1

公开(公告)日：2010-07-01

申请号：US12346333

申请日：2008-12-30

申请人： Kambiz Zangi

发明人： Kambiz Zangi

IPC分类号： H04W72/00 ,  H04L27/28

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/006

摘要： A mobile communication system network node (NN) that serves user equipments (UEs) has fewer orthogonal reference signals (RSs) than a maximum number of UE antenna ports (APs) that can be served by the NN. A channel quality of a channel between the AP and the network node is ascertained for each of the APs. Whenever a number of APs of UEs served by the NN exceeds the number of RSs, all RSs are allocated to a subset of all of the APs by means of an allocation process such that: each RS is allocated to only one of the APs; each AP has no more than one RS allocated to it; and allocation decisions are a function of the channel qualities of the respective APs such that the higher the channel quality, the higher priority the corresponding AP is given as a candidate for receiving an RS allocation.

摘要翻译： 为用户设备（UE）提供的移动通信系统网络节点（NN）具有比可由NN服务的最大数量的UE天线端口（AP）更少的正交参考信号（RS）。 确定每个AP的AP和网络节点之间的信道的信道质量。 每当由NN服务的UE的多个AP超过RS的数量时，通过分配处理将所有RS分配给所有AP的子集，使得：每个RS仅分配给一个AP; 每个AP只有一个RS分配给它; 并且分配决定是各个AP的信道质量的函数，使得信道质量越高，相应的AP的较高优先级被给予作为用于接收RS分配的候选。

公开(公告)号：US20100150267A1

公开(公告)日：2010-06-17

申请号：US12566063

申请日：2009-09-24

申请人： Kambiz Zangi

发明人： Kambiz Zangi

IPC分类号： H04L25/49

CPC分类号： H04L25/03343 ,  H04L25/0206 ,  H04L2025/03426

摘要： Techniques for reducing the number of bits needed to specify the best precoding vector for each mobile station in a wireless communication network that employs multi-point transmission are disclosed. An exemplary method begins with the estimation of path loss between a mobile station and each of a plurality of geographically separated transmitter sites, each transmitter site having at least one transmitter antenna. Based on the estimated path losses, one of a plurality of pre-determined subsets (codebooks) of a pre-determined set of antenna precoding vectors is selected. A group index identifying the selected subset is then transmitted to the mobile station. Subsequently, a vector index is received from the mobile station, the vector index corresponding to a precoding vector in the selected subset, and data is transmitted to the mobile station, using the precoding vector applied to the transmitter antennas at the plurality of transmitter sites.

摘要翻译： 公开了用于减少在采用多点传输的无线通信网络中为每个移动台指定最佳预编码矢量所需的比特数量的技术。 一种示例性方法开始于估计移动站与多个地理上分离的发射机站点中的每一个之间的路径损耗，每个发射机站点具有至少一个发射机天线。 基于估计的路径损耗，选择预定的天线预编码矢量集合的多个预定子集（码本）之一。 识别所选子集的组索引然后被发送到移动台。 随后，从移动台接收向量索引，对应于所选子集中的预编码向量的向量索引，并且使用应用于多个发射机站点处的发射机天线的预编码矢量将数据发送到移动台。

公开(公告)号：US07715864B2

公开(公告)日：2010-05-11

申请号：US11531587

申请日：2006-09-13

申请人： Kambiz Zangi

发明人： Kambiz Zangi

IPC分类号： H04B7/00

CPC分类号： H04W74/0833 ,  H04L1/0026 ,  H04L1/18 ,  H04L1/20 ,  H04L25/0242 ,  H04W28/22 ,  H04W52/146 ,  H04W52/242 ,  H04W52/245 ,  H04W52/248 ,  H04W74/0866 ,  H04W88/08

摘要： An arrangement, method, and access point (AP) in a wireless telecommunication network for providing a user terminal (UT) with access to the network utilizing a contention-based, multi-access uplink channel. The AP includes Nrx receive antennas, where Nrx>1, for receiving simultaneous uplink transmissions from a number of UTs, wherein the number of UTs transmitting on a given slot is less than or equal to Nrx. The AP sends power-control commands to the UTs to control the transmit power of each of the UTs to provide received signals of equal average power at the AP. The AP also instructs each UT to select its transmission data rate based on a noise level at the AP, so as to achieve a desired level of reliability. An MMSE receiver without successive interference cancellation receives the packets transmitted from the UTs and separately demodulates and decodes the packets received from each user terminal.

摘要翻译： 无线电信网络中的布置，方法和接入点（AP），用于使用基于竞争的多接入上行链路信道来向用户终端（UT）提供对网络的接入。 AP包括Nrx个接收天线，其中Nrx> 1，用于从多个UT接收同时的上行链路传输，其中在给定时隙上发送的UT的数量小于或等于Nrx。 AP向UT发送功率控制命令以控制每个UT的发射功率，以在AP处提供相等平均功率的接收信号。 AP还指示每个UT基于AP处的噪声电平来选择其传输数据速率，以便实现期望的可靠性水平。 没有连续干扰消除的MMSE接收机接收从UT发送的分组，并对从每个用户终端接收到的分组进行解调和解码。