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1. 发明申请

US20120238309A1 METHOD AND APPARATUS FOR OPTIMIZING SPECTRUM UTILIZATION BY A COGNITIVE RADIO NETWORK 有权
标题翻译：通过认知无线电网络优化频谱利用的方法和装置
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。

2. 发明申请

US20100330919A1 METHOD FOR DATABASE DRIVEN CHANNEL QUALITY ESTIMATION IN A COGNITIVE RADIO NETWORK 有权
标题翻译：数据库驱动信道质量估计方法在认知无线电网络中的应用
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。

3. 发明申请

US20110124291A1 METHOD FOR QUIETING AND SENSING IN A SECONDARY COMMUNICATIONS SYSTEM 有权
标题翻译：在二次通信系统中查询和传感的方法
公开(公告)号：US20110124291A1
公开(公告)日：2011-05-26
申请号：US12623588
申请日：2009-11-23
申请人： DAVID P. GURNEY , BRUCE D. MUELLER
发明人： DAVID P. GURNEY , BRUCE D. MUELLER
IPC分类号： H04B7/00 , H04B17/00 , H04B15/00
CPC分类号： H04W16/14 , H04W72/085 , H04W72/1231
摘要： A method of retaining channel use by a secondary system is described. A secondary channel used during periods of normal communication between a secondary transmitter and receiver is split into sub-bands for use during a quiet period containing quiet phases. During the quiet period, while the transmitter communicates with the receiver on one sub-band, the receiver simultaneously senses for incumbent devices on another sub-band, as well as vice-versa. Transmission and sensing do not occur simultaneously on the same sub-band and transmission is limited to only one of the sub-bands. Transmission and sensing are performed by both the transmitter and the receiver on every sub-band over the course of the quiet period. The locations of secondary receivers are determined and employed during scheduling such that devices sufficiently separated from each other transmit during different quiet phases and transmit and sense in sub-bands separated by another sub-band.
摘要翻译：描述了通过辅助系统保持信道使用的方法。在次级发射机和接收机之间的正常通信期间使用的辅助信道被分成子带，以在包含安静阶段的安静时段期间使用。在静音期间，当发射机与一个子频带上的接收机进行通信时，接收机同时检测另一个子频带上的现有设备，反之亦然。传输和感测不会在同一子带上同时发生，传输仅限于一个子带。在安静时段的过程中，发射机和接收机都在每个子频带上执行传输和传感。在调度期间确定并采用辅助接收机的位置，使得彼此充分分离的设备在不同的安静阶段期间发送，并在由另一个子频带分离的子频带中进行发送和检测。

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