公开(公告)号：US20120320741A1

公开(公告)日：2012-12-20

申请号：US13510228

申请日：2010-11-15

Applicant: Martino M. Freda ,  Alpaslan Demir ,  Amith V. Chincholi ,  Alexander Reznik ,  Joseph A. Kwak

Inventor： Martino M. Freda ,  Alpaslan Demir ,  Amith V. Chincholi ,  Alexander Reznik ,  Joseph A. Kwak

IPC: H04W28/02 ,  H04W24/10

CPC classification number: H04W72/04 ,  H04W16/14 ,  H04W24/10 ,  H04W72/082

Abstract: A method for use in a Dynamic Spectrum Manager (DSM) for coordinating asynchronous silent periods in a network, the method comprising detecting a primary user in the network, transmitting a Silent Period Start Control Message to one or more cognitive radio (CR) nodes in the network, wherein the message indicates the start and duration of a silent period and initiates spectrum sensing, receiving a Measurement Report Control Message from the one or more CR nodes in the network indicating results of spectrum sensing, and transmitting a message to the one or more CR nodes, wherein the message instructs the one or more CR nodes to move to a different frequency based on the spectrum sensing results.

Abstract translation: 一种在动态频谱管理器（DSM）中用于协调网络中的异步静默时段的方法，所述方法包括：检测所述网络中的主用户，向所述网络中的一个或多个认知无线电（CR）节点发送静默时段起始控制消息， 网络，其中消息指示静默时段的开始和持续时间并且发起频谱感测，从指示频谱感测结果的网络中的一个或多个CR节点接收测量报告控制消息，以及将消息发送到所述一个或 更多的CR节点，其中消息指示一个或多个CR节点基于频谱感测结果移动到不同的频率。

公开(公告)号：US20120113918A1

公开(公告)日：2012-05-10

申请号：US13287381

申请日：2011-11-02

Applicant: Martino M. Freda ,  Liangping Ma ,  Saad Ahmad ,  Jean-Louis Gauvreau ,  Alpaslan Demir ,  Chunxuan Ye

Inventor： Martino M. Freda ,  Liangping Ma ,  Saad Ahmad ,  Jean-Louis Gauvreau ,  Alpaslan Demir ,  Chunxuan Ye

IPC: H04W72/00

CPC classification number: H04W72/1205 ,  H04W16/14 ,  H04W56/002 ,  H04W72/0453

Abstract: Described herein is a silent period method and apparatus for dynamic spectrum management. The methods include configuration and coordination of silent periods across an aggregated channel in a wireless communication system. A silent period management entity (SPME) dynamically determines silent period schedules for channels based on system and device information and assigns a silent period duration and periodicity for each silent period. The SPME may reconfigure the silent period schedule based on system delay, system throughput, channel quality or channel management events. A silent period interpretation entity (SPIE) receives and implements the silent period schedule. The silent periods for the channels may be synchronized, independent, or set-synchronized. Interfaces for communicating between the SPME, SPIE, a channel management function, a medium access control (MAC) quality of service (QoS) entity, a sensing/capabilities database, a MAC layer management entity (MLME) and a wireless receive/transmit unit (WTRU) MLME are described herein.

Abstract translation: 这里描述了一种用于动态频谱管理的无声期方法和装置。 这些方法包括在无线通信系统中的聚合信道上的静默期的配置和协调。 静默期管理实体（SPME）基于系统和设备信息动态地确定信道的静默期计划，并为每个静默期分配静默期持续时间和周期。 SPME可以基于系统延迟，系统吞吐量，信道质量或信道管理事件重新配置静默期调度。 静默期解释实体（SPIE）接收并实现静默期计划。 信道的静默期可以是同步的，独立的或设置同步的。 用于在SPME，SPIE，信道管理功能，媒体接入控制（MAC）服务质量（QoS）实体，感测/能力数据库，MAC层管理实体（MLME）和无线接收/发射单元 （WTRU）MLME。

公开(公告)号：US20110287802A1

公开(公告)日：2011-11-24

申请号：US13102559

申请日：2011-05-06

Applicant: Liangping Ma ,  Chunxuan Ye ,  Saad Ahmad ,  Alpaslan Demir ,  Rocco Di Girolamo ,  Jean-Louis Gauvreau ,  Alexander Reznik ,  Angelo A. Cuffaro

Inventor： Liangping Ma ,  Chunxuan Ye ,  Saad Ahmad ,  Alpaslan Demir ,  Rocco Di Girolamo ,  Jean-Louis Gauvreau ,  Alexander Reznik ,  Angelo A. Cuffaro

IPC: H04B7/00

CPC classification number: H04W72/082 ,  H04L5/0062 ,  H04L5/0066 ,  H04W28/065 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W88/08

Abstract: Systems and methods for dynamic white space management are described. First, local handling of channel queries, in which a channel query by a white space device (WSD) is handled by a local dynamic spectrum management (DSM) server, if the DSM server has all the information necessary for providing a response to the channel query. Second, a search extension, in which a WSDB passes part of a search for available channels to a local DSM server. Third, assisting of an available channel calculation, in which a DSM server provides spectrum sensing information to WSDBs to improve the available channel calculation within the WSDBs. And fourth, dynamic bandwidth management to meet the coexistence requirements. In addition, the content of the messages and procedures that enable the above value-adding functions and interactions with the WSDB systems are described.

Abstract translation: 描述了用于动态空白管理的系统和方法。 首先，如果DSM服务器具有向信道提供响应所需的全部信息，则由本地动态频谱管理（DSM）服务器处理由空白设备（WSD）进行的信道查询的信道查询的本地处理 查询。 第二，搜索扩展，其中WSDB将可用频道的搜索的一部分通过本地DSM服务器。 第三，辅助可用的信道计算，其中DSM服务器向WSDB提供频谱感测信息以改善WSDB内的可用信道计算。 第四，动态带宽管理满足共存要求。 此外，描述了能够实现上述增值功能和与WSDB系统交互的消息和过程的内容。

公开(公告)号：US07689235B2

公开(公告)日：2010-03-30

申请号：US12001162

申请日：2007-12-10

Applicant: Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz

Inventor： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz

IPC: H04B7/00

CPC classification number: H04W48/10 ,  H04W48/02 ,  H04W48/16 ,  H04W56/00

Abstract: A method for performing initial cell search in wireless communication system wherein unsuitable cells includes searching stored frequencies exhaustively and initial frequencies non-exhaustively. Initial frequencies may be searched exhaustively in certain circumstances. When performing exhaustive initial cell searches, primary synchronization codes that lead to unsuitable cells are excluded from subsequent initial cell searches performed on the same frequency.

Abstract translation: 一种用于在无线通信系统中执行初始小区搜索的方法，其中不合适的小区包括穷举地搜索存储的频率和非穷尽地初始频率。 在某些情况下，可能会彻底地搜索初始频率。 当执行穷尽的初始小区搜索时，导致不适合小区的主同步码被排除在对相同频率执行的后续初始小区搜索中。

公开(公告)号：US20090129458A1

公开(公告)日：2009-05-21

申请号：US12360171

申请日：2009-01-27

Applicant: Philip J. Pietraski ,  Mihaela C. Beluri ,  Alpaslan Demir

Inventor： Philip J. Pietraski ,  Mihaela C. Beluri ,  Alpaslan Demir

IPC: H04L27/01

CPC classification number: H04L25/03019 ,  H04B2201/70701 ,  H04L2025/03687

Abstract: A step-size estimator for controlling the step-size of an adaptive equalizer incorporated in a transceiver (e.g., a wireless transmit/receive unit (WTRU)). The step-size estimator updates at least one adaptive equalizer tap used by the adaptive equalizer based on an apparent speed of a channel established between the transceiver and another transceiver. The step-size estimator includes a speed estimator, a signal-to-noise ratio (SNR) averager and a step-size mapping unit. The speed estimator is used to estimate the apparent speed of the channel (i.e., the observed and/or measured rate of change of the channel impulse response). The SNR averager generates a common pilot channel (CPICH) SNR estimate. The step-size mapping unit uses the speed estimate and the CPICH SNR estimate to generate a step-size parameter, μ, and a filter taps leakage factor parameter, α, used by the adaptive equalizer to update the filter tap coefficient.

Abstract translation: 用于控制并入收发器（例如，无线发射/接收单元（WTRU））中的自适应均衡器的步长的步长估计器。 步长估计器基于在收发器和另一收发器之间建立的信道的视在速度来更新由自适应均衡器使用的至少一个自适应均衡器抽头。 步长估计器包括速度估计器，信噪比（SNR）平均器和步长映射单元。 速度估计器用于估计信道的视在速度（即，观测和/或测量的信道脉冲响应的变化速率）。 SNR平均器生成公共导频信道（CPICH）SNR估计。 步进大小映射单元使用速度估计和CPICH SNR估计来生成步长大小参数，以及由自适应均衡器使用的滤波器抽头泄漏因子参数α，以更新滤波器抽头系数。

公开(公告)号：US20090074108A1

公开(公告)日：2009-03-19

申请号：US12275806

申请日：2008-11-21

Applicant: Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

Inventor： Alpaslan Demir ,  Leonid Kazakevich ,  Kenneth P. Kearney

IPC: H04B1/00

CPC classification number: H03C3/406 ,  H04B1/30

Abstract: A method and system for determining amplitude and phase compensation values used to adjust the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter. The compensation values may be determined in response to detecting a significant temperature change in the transmitter. Corresponding amplitude and phase adjustment signals having levels that correspond to the compensation values are provided to respective amplitude and phase imbalance compensation modules to adjust the amplitude and phase characteristics of at least one of the real and imaginary signal components.

Abstract translation: 用于确定用于调整由模拟无线电发射机处理的复信号的实信号和虚信号分量的幅度和相位特性的幅度和相位补偿值的方法和系统。 可以响应于检测到发射器中的明显的温度变化来确定补偿值。 具有对应于补偿值的电平的对应幅度和相位调整信号被提供给相应的幅度和相位不平衡补偿模块，以调整实信号分量和虚信号分量中的至少一个的振幅和相位特性。

公开(公告)号：US20090060020A1

公开(公告)日：2009-03-05

申请号：US12265929

申请日：2008-11-06

Applicant: Philip J. Pietraski ,  Rui Yang ,  Mihaela Beluri ,  Alpaslan Demir

Inventor： Philip J. Pietraski ,  Rui Yang ,  Mihaela Beluri ,  Alpaslan Demir

IPC: H04L27/01

CPC classification number: H04B1/7097 ,  H04B1/712 ,  H04L25/03248

Abstract: A method and apparatus for estimating and correcting baseband frequency error in a receiver. In one embodiment, an equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream. In another embodiment, a channel estimator performs channel estimation and generates Rake receiver finger weights based on at least one of the finger weights. An estimated frequency error signal is generated based on at least one of the finger weights.

Abstract translation: 一种用于估计和校正接收机中的基带频率误差的方法和装置。 在一个实施例中，均衡器对采样数据流执行均衡，并且基于均衡产生滤波器抽头值。 基于滤波器抽头值中的至少一个生成估计的频率误差信号。 基于估计的频率误差信号产生旋转相量。 将旋转相量信号与样本数据流相乘以校正样本数据流的频率。 在另一个实施例中，信道估计器执行信道估计，并且基于手指权重中的至少一个产生Rake接收机手指权重。 基于手指权重中的至少一个生成估计的频率误差信号。

公开(公告)号：US07433437B2

公开(公告)日：2008-10-07

申请号：US11205846

申请日：2005-08-17

Applicant: Alpaslan Demir ,  Donald M. Grieco

Inventor： Alpaslan Demir ,  Donald M. Grieco

IPC: H04L7/04 ,  H04B1/16

CPC classification number: H04W56/00 ,  H04B1/7083 ,  H04J3/0608 ,  H04J11/0069 ,  H04W48/16

Abstract: A user equipment (UE) for establishing a communication link comprising a first module for processing a received communication signal and generating an index value associated with a primary synchronization code within said communication signal; a second module for generating a scrambling code group number, a slot offset, and secondary synchronization code based on output provided by the first module; a third module for retrieving a primary scrambling code based on the scrambling code group number and slot offset; and a controller coupled to said first module, second module, and third module for controlling an a search frequency of the UE for establishing a communication link.

Abstract translation: 一种用于建立通信链路的用户设备（UE），其包括用于处理所接收的通信信号的第一模块，并且生成与所述通信信号内的主同步码相关联的索引值; 第二模块，用于基于由所述第一模块提供的输出产生扰码组号，时隙偏移和次同步码; 第三模块，用于基于所述扰码组号和时隙偏移来检索主扰码; 以及耦合到所述第一模块，第二模块和第三模块的控制器，用于控制UE用于建立通信链路的搜索频率。

公开(公告)号：US07415084B2

公开(公告)日：2008-08-19

申请号：US10660842

申请日：2003-09-12

Applicant: Philip J. Pietraski ,  Alpaslan Demir ,  Donald M. Grieco

Inventor： Philip J. Pietraski ,  Alpaslan Demir ,  Donald M. Grieco

IPC: H03D1/04

CPC classification number: H04B1/70735 ,  H04B1/70755 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7103 ,  H04B2201/70707

Abstract: The invention provides embodiments to facilitate cell search. In one embodiment, received samples are split into a plurality of sample sets for processing. Each of the sets is processed and an accumulated result is divided by an estimated noise value. In another embodiment, a code correlator correlates the received signal with a primary synchronization code and an auxiliary code correlator having a same length as the code correlator correlates the received signal with a code having a low cross correlation with the primary synchronization code. In another embodiment, a division of an accumulated result with a noise estimate is performed using indexes of the most significant bits.

Abstract translation: 本发明提供了便于小区搜索的实施例。 在一个实施例中，将接收到的样本分成多个样本集进行处理。 处理每个集合，并将累积结果除以估计的噪声值。 在另一个实施例中，码相关器将接收的信号与主同步码相关，并且与码相关器具有相同长度的辅助码相关器将接收的信号与与主同步码具有低互相关的代码相关。 在另一个实施例中，使用最高有效位的索引来执行累积结果与噪声估计的分割。

公开(公告)号：US07412013B2

公开(公告)日：2008-08-12

申请号：US11754013

申请日：2007-05-25

Applicant: Alpaslan Demir

Inventor： Alpaslan Demir

IPC: H04L27/06

CPC classification number: H04B1/14 ,  H03J2200/02 ,  H04B1/70735 ,  H04B1/708 ,  H04J11/0069 ,  H04L27/0014 ,  H04L2027/0024 ,  H04L2027/0065 ,  H04L2027/0091

Abstract: A method and apparatus for use in connection with wireless communication to adjust the frequency of an oscillator to synchronize with a received signal by correlating a synchronization code channel with training sequences to estimate positive and negative offsets which are employed to estimate an error, which is then filtered. The filtered output preferably provides a voltage controlling a voltage controlled oscillator (VCO). The same technique may be employed to control a numeric controlled oscillator (NCO).

Abstract translation: 一种用于无线通信的方法和装置，用于通过将同步码信道与训练序列相关联来估计振荡器的频率来调整振荡器的频率以与接收的信号同步，以估计用于估计错误的正和负偏移量 过滤 滤波后的输出优选地提供控制压控振荡器（VCO）的电压。 可以采用相同的技术来控制数控振荡器（NCO）。