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：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：US08849326B2

公开(公告)日：2014-09-30

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： H04B15/00 ,  H04B17/00 ,  H04B7/185 ,  H04L1/00 ,  H04L5/00 ,  H04J11/00

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：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：US20100098043A1

公开(公告)日：2010-04-22

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： H04B7/216

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：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：US20100136940A1

公开(公告)日：2010-06-03

申请号：US11993507

申请日：2005-06-24

申请人： Dennis Hui ,  Abdulrauf Hafeez

发明人： Dennis Hui ,  Abdulrauf Hafeez

IPC分类号： H04B1/10

CPC分类号： H04L25/0204 ,  H04L7/041 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0244 ,  H04L25/03993

摘要： A system and method in a radio receiver for joint synchronization and noise covariance estimation of a received signal. A spatially and temporally stacked signal model, whereby successive samples of temporally adjacent received signal vectors and corresponding training vectors are stacked, is used in the derivation of the estimation problem. The Toeplitz structure of the channel response matrix is neglected in the formulation of the estimation problem. The resulting estimator jointly estimates a synchronization position, a channel response matrix, and a noise covariance matrix. An estimate of a whitened channel is then computed based on the noise covariance matrix and the estimate of the channel response matrix.

摘要翻译： 用于接收信号的联合同步和噪声协方差估计的无线电接收机中的系统和方法。 空间和时间叠加的信号模型，其中叠加时间上相邻的接收信号矢量和对应的训练矢量的连续样本，用于推导估计问题。 通道响应矩阵的Toeplitz结构在估计问题的描述中被忽略。 所得到的估计器共同估计同步位置，信道响应矩阵和噪声协方差矩阵。 然后，基于噪声协方差矩阵和信道响应矩阵的估计来计算白化信道的估计。

公开(公告)号：US08199865B2

公开(公告)日：2012-06-12

申请号：US11993522

申请日：2005-06-28

申请人： Dennis Hui ,  Abdulrauf Hafeez

发明人： Dennis Hui ,  Abdulrauf Hafeez

IPC分类号： H04L7/00 ,  H04B17/00

CPC分类号： H04L25/0212 ,  H04L25/0224

摘要： A device and method in a radio receiver for generating synchronization and channel estimation information based on three parameters consisting of a synchronization position, at least one whitening filter parameter, and a channel estimate. A spatially and temporally stacked signal model is generated by stacking successive samples of temporally adjacent received signal vectors and corresponding training vectors. Initial estimates of a first one or two of the three parameters are then generated based on the spatially and temporally stacked signal model. The rest of the three parameters are then computed based on the initial estimates of the first one or two parameters. If a stopping criterion is met, the method ends and the parameters are used to process the signal. If the stopping criterion is not met, additional iterations are performed to improve the synchronization and estimation information.

摘要翻译： 一种无线电接收机中的装置和方法，用于基于由同步位置，至少一个白化滤波器参数和信道估计组成的三个参数来产生同步和信道估计信息。 通过堆叠时间上相邻的接收信号向量和对应的训练向量的连续采样来生成空间和时间叠加的信号模型。 然后基于空间和时间叠加的信号模型来生成三个参数中的第一个或两个的初始估计。 然后根据第一个或两个参数的初始估计值计算三个参数的其余部分。 如果满足停止标准，则该方法结束，参数用于处理信号。 如果不满足停止标准，则执行附加迭代以改善同步和估计信息。

公开(公告)号：US08024633B2

公开(公告)日：2011-09-20

申请号：US11746679

申请日：2007-05-10

申请人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

发明人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

IPC分类号： G08C25/02

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： In a wireless communication network using point-to-point or point-to-multipoint communications, this disclosure teaches the use of combined packets for retransmission and corresponding soft value processing at a receiver, wherein combined packets are formed as the logical combination of two or more previously transmitted packets and allow the receiver to use a single combined packet to correct one or more failed packets. For example, with the combined packet retransmission and corresponding soft value receiver processing as taught herein, a given receiver can use a given combined packet to correct bit errors in all (failed) packets comprising the combined packet as long as the bit errors in a failed packet do not overlap (or align) with bit errors in the other failed packets comprising the combined packet.

摘要翻译： 在使用点对点或点对多点通信的无线通信网络中，本公开教导了在接收机处使用组合分组进行重传和对应的软值处理，其中组合分组被形成为两个或 更先前传输的分组，并允许接收机使用单个组合分组来校正一个或多个故障分组。 例如，通过组合的分组重传和如本文所教导的相应的软值接收器处理，给定的接收机可以使用给定的组合分组来校正包括组合分组的所有（失败的）分组中的比特错误，只要失败的比特错误 分组不与包括组合分组的其他故障分组中的比特错误重叠（或对齐）。

公开(公告)号：US20080282125A1

公开(公告)日：2008-11-13

申请号：US11746679

申请日：2007-05-10

申请人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

发明人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

IPC分类号： H04L1/18

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： In a wireless communication network using point-to-point or point-to-multipoint communications, this disclosure teaches the use of combined packets for retransmission and corresponding soft value processing at a receiver, wherein combined packets are formed as the logical combination of two or more previously transmitted packets and allow the receiver to use a single combined packet to correct one or more failed packets. For example, with the combined packet retransmission and corresponding soft value receiver processing as taught herein, a given receiver can use a given combined packet to correct bit errors in all (failed) packets comprising the combined packet as long as the bit errors in a failed packet do not overlap (or align) with bit errors in the other failed packets comprising the combined packet.

摘要翻译： 在使用点对点或点对多点通信的无线通信网络中，本公开教导了在接收机处使用组合分组进行重传和对应的软值处理，其中组合分组被形成为两个或 更先前传输的分组，并允许接收机使用单个组合分组来校正一个或多个故障分组。 例如，通过组合的分组重传和如本文所教导的相应的软值接收器处理，给定的接收机可以使用给定的组合分组来校正包括组合分组的所有（失败的）分组中的比特错误，只要失败的比特错误 分组不与包括组合分组的其他故障分组中的比特错误重叠（或对齐）。