公开(公告)号：US20120100877A1

公开(公告)日：2012-04-26

申请号：US13335482

申请日：2011-12-22

申请人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04W24/02

CPC分类号： H04B7/024

摘要： A method for determining antenna weights for use in transmitting data from a plurality of base stations to a user device is disclosed. The antenna weights are determined using an input covariance matrix (S), and the input covariance matrix is determined subject to a predetermined power constraint and a predetermined, non-zero interference constraint.

摘要翻译： 公开了一种用于确定用于从多个基站向用户设备发送数据的天线权重的方法。 使用输入协方差矩阵（S）确定天线权重，并且在预定功率约束和预定的非零干扰约束条件下确定输入协方差矩阵。

公开(公告)号：US20100234053A1

公开(公告)日：2010-09-16

申请号：US12404773

申请日：2009-03-16

申请人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04B7/005 ,  H04B15/00

CPC分类号： H04B7/024

摘要： A method for determining antenna weights for use in transmitting data from a plurality of base stations to a user device is disclosed. The antenna weights are determined using an input covariance matrix (S), and the input covariance matrix is determined subject to a predetermined power constraint and a predetermined, non-zero interference constraint.

摘要翻译： 公开了一种用于确定用于从多个基站向用户设备发送数据的天线权重的方法。 使用输入协方差矩阵（S）确定天线权重，并且在预定功率约束和预定的非零干扰约束条件下确定输入协方差矩阵。

公开(公告)号：US08660597B2

公开(公告)日：2014-02-25

申请号：US13335482

申请日：2011-12-22

申请人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04B15/00 ,  H04B7/02

CPC分类号： H04B7/024

摘要： A method for determining antenna weights for use in transmitting data from a plurality of base stations to a user device is disclosed. The antenna weights are determined using an input covariance matrix (S), and the input covariance matrix is determined subject to a predetermined power constraint and a predetermined, non-zero interference constraint.

摘要翻译： 公开了一种用于确定用于从多个基站向用户设备发送数据的天线权重的方法。 使用输入协方差矩阵（S）确定天线权重，并且在预定功率约束和预定的非零干扰约束条件下确定输入协方差矩阵。

公开(公告)号：US08107983B2

公开(公告)日：2012-01-31

申请号：US12404773

申请日：2009-03-16

申请人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04B15/00 ,  H04B7/02

CPC分类号： H04B7/024

摘要： A method for determining antenna weights for use in transmitting data from a plurality of base stations to a user device is disclosed. The antenna weights are determined using an input covariance matrix (S), and the input covariance matrix is determined subject to a predetermined power constraint and a predetermined, non-zero interference constraint.

摘要翻译： 公开了一种用于确定用于从多个基站向用户设备发送数据的天线权重的方法。 使用输入协方差矩阵（S）确定天线权重，并且在预定功率约束和预定的非零干扰约束条件下确定输入协方差矩阵。

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：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：US08219128B2

公开(公告)日：2012-07-10

申请号：US12483603

申请日：2009-06-12

申请人： Kambiz Zangi ,  Abdulrauf Hafeez ,  Dennis Hui

发明人： Kambiz Zangi ,  Abdulrauf Hafeez ,  Dennis Hui

IPC分类号： H04B15/00 ,  H04B17/00 ,  H04B7/185

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

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：US08107965B2

公开(公告)日：2012-01-31

申请号：US12547817

申请日：2009-08-26

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 ,  H04B7/0615 ,  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：US20100317355A1

公开(公告)日：2010-12-16

申请号：US12483603

申请日：2009-06-12

申请人： Kambiz Zangi ,  Abdulrauf Hafeez ,  Dennis Hui

发明人： Kambiz Zangi ,  Abdulrauf Hafeez ,  Dennis Hui

IPC分类号： H04B15/00 ,  H04W72/04

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

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：US20100290382A1

公开(公告)日：2010-11-18

申请号：US12547817

申请日：2009-08-26

申请人： Dennis Hui ,  Kambiz Zangi

发明人： Dennis Hui ,  Kambiz Zangi

IPC分类号： H04H20/71

CPC分类号： H04B7/024 ,  H04B7/0615 ,  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。