公开(公告)号：WO2010047998A3

公开(公告)日：2010-07-08

申请号：PCT/US2009060453

申请日：2009-10-13

Applicant: MOTOROLA INC ,  THAMPI GEETHA K ,  CHAUDHRI APOORV ,  CORRETJER JESUS F ,  RAO YADUNANDANA N

Inventor： THAMPI GEETHA K ,  CHAUDHRI APOORV ,  CORRETJER JESUS F ,  RAO YADUNANDANA N

IPC: H04B1/16 ,  H04L25/02

CPC classification number: H04L27/0014 ,  H04L27/3845

Abstract: A device receives a signal and, prior to demodulating the signal determines whether carrier is present in the received signal based on the correlation depth of the received signal. The device determines (210) a plurality of values for the received signal that indicate the amount of correlation in the received signal and detects the presence of the carrier in the received signal as a function of the plurality of values. The plurality of values can include autocorrelation values and prediction coefficients, wherein the autocorrelation values are estimated based on an autocorrelation function derived for the received signal, and the prediction coefficients are generated using a prediction model that is derived as a function of the autocorrelation values. The prediction coefficients can be summed to generate (224) a decision statistic that is compared (228) to a detection threshold to detect the presence of the carrier.

Abstract translation: 设备接收信号，并在解调之前基于接收信号的相关深度来确定接收信号中是否存在载波。 该设备确定（210）接收信号的多个值，该值指示接收信号中的相关量，并根据多个值检测接收信号中载波的存在。 多个值可以包括自相关值和预测系数，其中自相关值是基于针对接收信号导出的自相关函数来估计的，并且使用作为自相关值的函数导出的预测模型来生成预测系数。 可以将预测系数相加以生成（224）与检测阈值进行比较（228）以检测载波的存在的判决统计量。

公开(公告)号：WO2010039352A3

公开(公告)日：2010-05-27

申请号：PCT/US2009054720

申请日：2009-08-24

Applicant: MOTOROLA INC ,  CHAUDHRI APOORV ,  GURNEY DAVID P ,  KUFFNER STEPHEN L ,  RAO YADUNANDANA N ,  SIMMS MATTHEW E

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

IPC: H04W16/14 ,  H04W72/02

CPC classification number: H04W72/082 ,  H04W4/02 ,  H04W8/205 ,  H04W16/14 ,  H04W48/20 ,  H04W72/02

Abstract: 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.

Abstract translation: 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：WO2010002606A3

公开(公告)日：2010-01-07

申请号：PCT/US2009/047874

申请日：2009-06-19

Applicant: MOTOROLA, INC. ,  RAO, Yadunandana, N. ,  CHAUDHRI, Apoorv ,  CORKE, Robert, J.

Inventor： RAO, Yadunandana, N. ,  CHAUDHRI, Apoorv ,  CORKE, Robert, J.

IPC: H04L27/26 ,  H04W16/14

Abstract: Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 104) and at least one cognitive radio (CR) system (106, 108) is provided. The CR unit includes OFDM detection (216) for detecting the presence of OFDM signals which indicate the presence of an incumbent communication system within the shared spectrum. The CR system (106) updates channel occupancy information in response to the detected OFDM signals so as not to interfere with the incumbent communication systems (102, 104).

公开(公告)号：WO2009155016A2

公开(公告)日：2009-12-23

申请号：PCT/US2009045369

申请日：2009-05-28

Applicant: MOTOROLA INC ,  CHAUDHRI APOORV ,  GURNEY DAVID P ,  RAO YADUNANDANA N

Inventor： CHAUDHRI APOORV ,  GURNEY DAVID P ,  RAO YADUNANDANA N

IPC: H04W16/14

CPC classification number: H04W16/14 ,  H04W52/243 ,  H04W52/281 ,  H04W52/283 ,  H04W52/367 ,  H04W72/0453 ,  H04W72/0473

Abstract: A method (300, 400) and a communication system (104, 106, 200) for dynamic RF spectrum allocation among a plurality of RF transmitters (108, 110, 112). A message can be received from a first communication system. The message can include a request (130) for available RF spectrum over which to transmit RF signals. The message can indicate a geographic location of a first non-incumbent transmitter (112) associated with the first communication system. Further, for the RF spectrum, a maximum power level can be determined at which the first non-incumbent transmitter may transmit without exceeding a threshold level of interference at at least one focal point (134). A RF spectrum list (138) identifying at least the RF spectrum and the determined maximum power level can be communicated to the first communication system.

Abstract translation: 一种用于多个RF发射机（108,110,112）中的动态RF频谱分配的方法（300,400）和通信系统（104,106,200）。 可以从第一通信系统接收消息。 消息可以包括用于发射RF信号的可用RF频谱的请求（130）。 该消息可以指示与第一通信系统相关联的第一非现在发射机（112）的地理位置。 此外，对于RF频谱，可以确定第一非现在发射机可以在哪个第一非现在发射机可以在不超过至少一个焦点（134）处的阈值干扰电平的情况下发射的最大功率电平。 识别至少RF频谱和确定的最大功率电平的RF频谱列表（138）可被传送到第一通信系统。

公开(公告)号：WO2006039101A3

公开(公告)日：2006-06-22

申请号：PCT/US2005032670

申请日：2005-09-14

Applicant: MOTOROLA INC ,  RUELKE CHARLES R ,  CHAUDHRI APOORV ,  STOGNER DARRELL J

Inventor： RUELKE CHARLES R ,  CHAUDHRI APOORV ,  STOGNER DARRELL J

IPC: H04B15/00 ,  H04W36/20 ,  H04W36/36

CPC classification number: H04W36/20 ,  H04W36/36

Abstract: A method for maximizing intermodulation interference protection during a handoff between radio cell sites (300) includes scanning a plurality of radio channels (302) and measuring the signal power (307, 315) for at least one of the radio channels. One or more receiver attenuators (313) are then set based on the detection of intermodulation (IM) interference of the measured channel. The attenuators are then scaled (311) based on the degree of IM interference. If the attenuators cannot mitigate this interference below some predetermined level, the radio channel is changed (321) and the process begins again to ensure a high quality of communication with a cell site.

Abstract translation: 在无线电小区站点（300）之间的切换期间最大化互调干扰保护的方法包括扫描多个无线电信道（302）并测量至少一个无线电信道的信号功率（307,315）。 然后基于测量的信道的互调（IM）干扰的检测来设置一个或多个接收机衰减器（313）。 然后基于IM干扰的程度对衰减器进行缩放（311）。 如果衰减器不能将这种干扰降低到低于某一预定水平，则无线电信道被改变（321），并且该过程再次开始以确保与小区站点的高质量的通信。

公开(公告)号：WO2009058568A1

公开(公告)日：2009-05-07

申请号：PCT/US2008/080065

申请日：2008-10-16

Applicant: MOTOROLA, INC. ,  SIMMS, Matthew E. ,  CHAUDHRI, Apoorv ,  RAO, Yadunandana N.

Inventor： SIMMS, Matthew E. ,  CHAUDHRI, Apoorv ,  RAO, Yadunandana N.

IPC: H04W16/14

CPC classification number: H04W16/14

Abstract: A monitoring device (141) can include a transceiver (202) to receive a radio signal, and a controller (203) communicatively coupled to the transceiver to detect an infringement on the radio signal and report the infringement to a database. One or more policies within the database can be updated to mitigate the infringement. The monitoring device can also detect whether a cognitive radio (111) is generating interference on a primary spectrum used by an incumbent device (151). Other embodiments are disclosed.

Abstract translation: 监视设备（141）可以包括用于接收无线电信号的收发机（202）和通信地耦合到收发器的控制器（203），以检测对无线电信号的侵权并将侵权报告给数据库。 可以更新数据库中的一个或多个策略以减轻侵权。 监测装置还可以检测认知无线电（111）是否在现有设备（151）使用的主要频谱上产生干扰。 公开了其他实施例。

公开(公告)号：WO2009029413A1

公开(公告)日：2009-03-05

申请号：PCT/US2008/072937

申请日：2008-08-13

Applicant: MOTOROLA, INC. ,  CORKE, Robert J. ,  CHAUDHRI, Apoorv ,  DELVE, Trefor J. ,  HEKMANN, Ralf ,  PRYSBY, Daniel G. ,  RAO, Yadunandana N. ,  WARE, Christopher G. ,  ZELEZNIK, Michael F.

Inventor： CORKE, Robert J. ,  CHAUDHRI, Apoorv ,  DELVE, Trefor J. ,  HEKMANN, Ralf ,  PRYSBY, Daniel G. ,  RAO, Yadunandana N. ,  WARE, Christopher G. ,  ZELEZNIK, Michael F.

IPC: H04B7/26

CPC classification number: H04W72/02 ,  H04W72/0453 ,  H04W84/08

Abstract: A wireless communication network is provided in which a plurality of radio devices achieve frequency diversity. By utilizing cognitive capability within the radio devices to iteratively select frequency sets, a lowest cardinality frequency set is generated and used to communicate amongst the plurality of radio devices. Each radio device can have different hardware, as the iterative selection of frequency set can take into account the different hardware capabilities of the radio devices.

Abstract translation: 提供了一种无线通信网络，其中多个无线电设备实现频率分集。 通过利用无线电设备内的认知能力来迭代地选择频率集合，生成最低基数频率集合并用于在多个无线电设备之间进行通信。 每个无线电设备可以具有不同的硬件，因为频率集合的迭代选择可以考虑到无线电设备的不同硬件能力。

公开(公告)号：WO2009073303A1

公开(公告)日：2009-06-11

申请号：PCT/US2008/082413

申请日：2008-11-05

Applicant: MOTOROLA, INC. ,  CHAUDHRI, Apoorv ,  RAO, Yadunandana N.

Inventor： CHAUDHRI, Apoorv ,  RAO, Yadunandana N.

IPC: H04W16/14

CPC classification number: H04W16/14

Abstract: A combination of subscriber clustering and link interleaving provides a cognitive radio system (CR) 100 with opportunities to sense an incumbent system's spectrum on secondary basis. The CR system (100) uses clustering to identify out-of-band channels. The CR system (100) uses link interleaving during a second mode of operation to sense and detect any incumbent (120) on in-band channels. A list of out-band channels are sensed by clusters (0, 1, 2, 3) sequentially to generate a ranked list of potential channels for future use by the CR system. These out-of-band channels can be used opportunistically in case of in-band incumbent detection.

Abstract translation: 用户聚类和链路交织的组合为认知无线电系统（CR）100提供了次要的感知现有系统频谱的机会。 CR系统（100）使用聚类来识别带外信道。 CR系统（100）在第二操作模式期间使用链路交织来感测和检测带内信道上的任何现有（120）。 簇（1，2，3）依次检测出带外信道的列表，以产生用于将来由CR系统使用的潜在信道的排序列表。 在带内现场检测的情况下，这些带外频道可以机会地使用。

公开(公告)号：WO2009018300A1

公开(公告)日：2009-02-05

申请号：PCT/US2008/071525

申请日：2008-07-30

Applicant: MOTOROLA, INC. ,  GURNEY, David P. ,  CHAUDHRI, Apoorv ,  RAO, Yadunandana N. ,  SIMMS, Matthew E.

Inventor： GURNEY, David P. ,  CHAUDHRI, Apoorv ,  RAO, Yadunandana N. ,  SIMMS, Matthew E.

IPC: H04W16/14

CPC classification number: H04W16/14 ,  H04W24/04

Abstract: Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 152) and at least one cognitive radio (CR) system (105) is provided. The incumbent system's system parameters and CR system's operational requirements are copied to a mirrored database (106B). The mirrored database (106B) is controlled by a either a central authority (108) or a database manager having delegated authority (508). The mirrored database (106B) is accessed by the CR system (105). The mirrored database (106B) can be modified and updated by the central authority (108) or delegated database manager (508) to correct for interference detected in the incumbent system caused (152) by the cognitive radio system (105). The cognitive radio system (105) utilizes the updated mirrored database (106B) to avoid interfering with the incumbent system (102, 152) to determine CR system operating parameters thus enhancing the ability to share spectrum.

Abstract translation: 提供至少一个现有通信系统（102,152）和至少一个认知无线电（CR）系统（105）之间的有效的频谱共享。 现有系统的系统参数和CR系统的操作要求被复制到镜像数据库（106B）。 镜像数据库（106B）由具有委托权限的中央管理机构（108）或数据库管理器（508）控制。 镜像数据库（106B）由CR系统（105）访问。 可以由中央管理机构（108）或委托的数据库管理器（508）修改和更新镜像数据库（106B），以校正由认知无线电系统（105）引起（152）在现有系统中检测到的干扰。 认知无线电系统（105）利用更新的镜像数据库（106B）来避免干扰现有系统（102,152）来确定CR系统操作参数，从而提高共享频谱的能力。

公开(公告)号：WO2008016774A2

公开(公告)日：2008-02-07

申请号：PCT/US2007/073584

申请日：2007-07-16

Applicant: MOTOROLA, INC. ,  RAO, Yadunandana, N. ,  CHAUDHRI, Apoorv ,  LAMPERT, Chet, A.

Inventor： RAO, Yadunandana, N. ,  CHAUDHRI, Apoorv ,  LAMPERT, Chet, A.

IPC: H04J3/22

CPC classification number: H04W72/048 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0258 ,  H04W72/042 ,  Y02D70/1224 ,  Y02D70/142

Abstract: A system (100) and method (500) for method for channel slot granting is provided. The method includes estimating (502) a temperature of a device (102), adjusting (504) a duty-cycle of the device based on the temperature, sending (506) the duty-cycle to a base station (110) and allocating (510) time slots for the device in accordance with the duty-cycle. A rate of slot assignments to multiple devices can be controlled (512) based on multiple duty-cycles received. The duty-cycle and temperature can be included (610) in a Quality of Service (QoS) metric for inbound and outbound performance.

Abstract translation: 提供了用于信道时隙授权的方法的系统（100）和方法（500）。 该方法包括估计（502）设备（102）的温度，基于温度调整（504）设备的工作循环，将工作循环发送（506）到基站（110）并且将 510）根据占空比来设备的时隙。 基于接收到的多个占空比可以控制（512）对多个设备的时隙分配速率。 可以将占空比和温度（610）包含在用于入站和出站性能的服务质量（QoS）度量中。