公开(公告)号：US20120163508A1

公开(公告)日：2012-06-28

申请号：US12979133

申请日：2010-12-27

申请人： STEPHEN L. KUFFNER ,  LAWRENCE M. ECKLUND

发明人： STEPHEN L. KUFFNER ,  LAWRENCE M. ECKLUND

IPC分类号： H04L27/04 ,  H04L27/06

CPC分类号： H04L27/06 ,  H04B2201/692 ,  H04L27/0006 ,  H04L27/04 ,  H04L27/364 ,  H04W16/14

摘要： Communication devices and methods for transmitting and receiving a wideband signal using aggregated discontiguous narrowband channels in a band are presented. During transmission, a fold point is determined in which symmetric free channels are sufficient to transmit the signal. The signal is then synthesized by aggregating the data in the channels and transmitted using the fold point as the up-conversion modulation frequency. During reception, information regarding which channels are being used to provide data signals and which channels are occupied by interferers is received. This information is used to determine one or more fold points as the down-conversion modulation frequencies. The fold points are selected such that an image of each interferer falls on an unoccupied channel or a narrowband channel occupied by another interferer.

摘要翻译： 提出了使用频带中聚合的不连续窄带信道发送和接收宽带信号的通信设备和方法。 在传输期间，确定一个折叠点，其中对称的自由信道足以传输该信号。 然后通过聚合信道中的数据并使用折点作为上转换调制频率来发送该信号。 在接收期间，接收关于哪些信道被用于提供数据信号的信息以及哪些信道被干扰源占用。 该信息用于确定一个或多个折点作为下转换调制频率。 选择折点使得每个干扰源的图像落在未被占用的信道或由另一干扰源占用的窄带信道上。

公开(公告)号：US20120238309A1

公开(公告)日：2012-09-20

申请号：US13368104

申请日：2012-02-07

申请人： APOORV CHAUDHRI ,  DAVID P. GURNEY ,  STEPHEN L. KUFFNER ,  YADUNANDANA N. RAO ,  MATTHEW E. SIMMS

发明人： APOORV CHAUDHRI ,  DAVID P. GURNEY ,  STEPHEN L. KUFFNER ,  YADUNANDANA N. RAO ,  MATTHEW E. SIMMS

IPC分类号： H04W48/20 ,  H04W52/28

CPC分类号： H04W72/082 ,  H04W4/02 ,  H04W8/205 ,  H04W16/14 ,  H04W48/20 ,  H04W72/02

摘要： A technique for a secondary communication system to utilize spectrum designated to another (or primary) communication system is provided. By ranking a plurality of secondary base stations based on base station transmit power, calculated required transmit power and path loss, a set of criteria is developed for selecting a highest ranked secondary base station for operation within a primary's spectrum. The ranking may be adapted based on mobility of the secondary's subscriber; and as such the secondary system communicates within the primary's spectrum using the adaptively ranked base stations. Channel selection may also be ranked. The technique and apparatus allows a cognitive radio (CR) network to operate within an incumbent network's spectrum.

摘要翻译： 提供了一种次要通信系统利用指定给另一（通信）通信系统的频谱的技术。 通过基于基站发射功率，计算的所需发射功率和路径损耗对多个次基站进行排序，开发了用于选择最高等级次级基站以在主频谱内操作的一组标准。 可以基于辅助用户的移动性来调整排名; 并且因此次级系统使用自适应排名的基站在主频谱内进行通信。 频道选择也可能被排名。 该技术和装置允许认知无线电（CR）网络在现有网络的频谱范围内运行。

公开(公告)号：US20100330919A1

公开(公告)日：2010-12-30

申请号：US12493886

申请日：2009-06-29

申请人： DAVID P. GURNEY ,  STEPHEN L. KUFFNER

发明人： DAVID P. GURNEY ,  STEPHEN L. KUFFNER

IPC分类号： H04B17/00

CPC分类号： H04W52/367 ,  H04W16/14 ,  H04W52/228 ,  H04W52/243 ,  H04W52/281 ,  H04W52/283 ,  H04W72/082 ,  H04W72/10

摘要： A method of determining operating parameters for a secondary system transmitter is described. The transmitter characteristics, including location and operating frequency band, are provided to a geo-location database. The database determines the maximum allowable transmission power that meets various specifications for different channels and conveys the power and channel(s) to the transmitter. The database estimates channel incumbent signal strengths based on the transmitter location and primary and higher-priority secondary incumbent systems, estimates the splatter levels, determines whether adjacent and co-channel interference protection ratios are met, and adjusts the allowable power level accordingly. The database also estimates aggregate co- and adjacent channel primary and secondary incumbent system interference levels at the transmitter location and predicts channel quality for each allowable channel. The estimated levels are updated using measurements of actual levels at the transmitter location. The database dynamically allocates channels using the secondary system priorities.

摘要翻译： 描述了确定次系统发射机的操作参数的方法。 发射机特性，包括位置和工作频段，提供给地理位置数据库。 数据库确定满足不同通道的各种规格的最大允许传输功率，并将功率和通道传送到发射机。 数据库估计基于发射机位置和主要和更高优先级的次要现有系统的现有信号强度，估计飞溅电平，确定是否满足相邻和同频道干扰保护比，并相应地调整容许功率电平。 数据库还估计在发射机位置处的总共和相邻信道主要和次要现有系统干扰电平，并且预测每个允许信道的信道质量。 使用测量发射机位置的实际电平来更新估计电平。 数据库使用辅助系统优先级动态分配通道。