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公开(公告)号：US07706465B2
公开(公告)日：2010-04-27
申请号：US11566893
申请日：2006-12-05
IPC分类号： H04L27/00
CPC分类号： H04B1/707 , H04L5/0007 , H04L5/0037 , H04L5/0058
摘要： During operation of a node in a secondary communication system (100) data enters a spreader (301) and is appropriately spread. The spread data is then modulated onto all available channels using a multi-carrier OFDM modulation technique. This entails the spread data being modulated onto those channels that are currently being used by the primary communication system (120). Finally, a transmitter (303) transmits the spread data only over carriers that will not interfere with the primary communication system.
摘要翻译： 在二次通信系统（100）中的节点的操作期间，数据进入扩展器（301）并适当地扩展。 然后使用多载波OFDM调制技术将扩展数据调制到所有可用信道上。 这导致扩展数据被调制到当前正在被主要通信系统（120）使用的那些信道上。 最后，发射机（303）仅在不会干扰主要通信系统的载波上发送扩展数据。
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2.发明申请公开(公告)号：US20090275294A1
公开(公告)日：2009-11-05
申请号：US12112568
申请日：2008-04-30
CPC分类号： H04W16/14 , H04W74/0808
摘要： A method (300) and cognitive radio (CR) wireless device (102) are provided for dynamically accessing spectrum in an opportunistic spectrum access wireless communication system (100). The method includes: transmitting, from a CR wireless device, a signal (216) having a first bandwidth within an unoccupied portion of spectrum (206), and after a time interval (T3) following the transmitting, and upon determining that an adjacent spectral quantum is occupied, transmitting from the CR wireless device a signal (216) having a second bandwidth, the second bandwidth being less than the first bandwidth. The method doubles a rate of growth of bandwidth of a transmitted signal when a spectral quantum adjacent to one side of the signal is unoccupied and a spectral quantum adjacent to the other side of the signal is occupied. The method utilizes knowledge of location of the CR wireless device and of band-edges to intelligently use spectral fence quanta.
摘要翻译： 提供了一种方法（300）和认知无线电（CR）无线设备（102），用于在机会频谱接入无线通信系统（100）中动态访问频谱。 该方法包括：从CR无线设备发送具有在频谱（206）的未占用部分内的第一带宽的信号（216），以及在发送之后的时间间隔（T3）之后，以及在确定相邻频谱 量子被占用，从CR无线设备发送具有第二带宽的信号（216），第二带宽小于第一带宽。 当与信号的一侧相邻的频谱量子没有占用并且与信号的另一侧相邻的频谱量子被占用时，该方法使发射信号的带宽增长率增加一倍。 该方法利用CR无线设备的位置知识和带边缘智能地使用频谱栅栏量子。
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3.发明授权公开(公告)号：US08385932B2
公开(公告)日：2013-02-26
申请号：US12415864
申请日：2009-03-31
IPC分类号： H04W72/04
CPC分类号： H04L27/0006 , H04L5/0058 , H04L5/0071 , H04L5/0075 , H04W72/02 , H04W72/1215
摘要： A technique (300) and apparatus for sharing frequency spectrum amongst cognitive radios, without the use of a centralized control, is provided. By determining open segments of available spectrum within a brokered spectrum (306), and determining costs associated with those available segments (307), a CR device can identify an optimal spectral portion (308) within which to transmit (314) and grow (342) a narrowband signal. The occupied bandwidth growth is monitored such that cost associated with the growth does not exceed a cost threshold (341).
摘要翻译： 提供了一种技术（300）和用于在认知无线电之间共享频谱的装置，而不使用集中式控制。 通过确定经销频谱（306）内的可用频谱的开放段，并且确定与那些可用段（307）相关联的成本，CR设备可以识别在其中发送（314）并增长的最佳频谱部分（314） ）窄带信号。 监控占用带宽增长，使与增长相关的成本不超过成本阈值（341）。
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4.发明授权公开(公告)号：US08145230B2
公开(公告)日：2012-03-27
申请号：US12112568
申请日：2008-04-30
CPC分类号： H04W16/14 , H04W74/0808
摘要： A method (300) and cognitive radio (CR) wireless device (102) are provided for dynamically accessing spectrum in an opportunistic spectrum access wireless communication system (100). The method includes: transmitting, from a CR wireless device, a signal (216) having a first bandwidth within an unoccupied portion of spectrum (206), and after a time interval (T3) following the transmitting, and upon determining that an adjacent spectral quantum is occupied, transmitting from the CR wireless device a signal (216) having a second bandwidth, the second bandwidth being less than the first bandwidth. The method doubles a rate of growth of bandwidth of a transmitted signal when a spectral quantum adjacent to one side of the signal is unoccupied and a spectral quantum adjacent to the other side of the signal is occupied. The method utilizes knowledge of location of the CR wireless device and of band-edges to intelligently use spectral fence quanta.
摘要翻译： 提供了一种方法（300）和认知无线电（CR）无线设备（102），用于在机会频谱接入无线通信系统（100）中动态访问频谱。 该方法包括：从CR无线设备发送具有在频谱（206）的未占用部分内的第一带宽的信号（216），以及在发送之后的时间间隔（T3）之后，以及在确定相邻频谱 量子被占用，从CR无线设备发送具有第二带宽的信号（216），第二带宽小于第一带宽。 当与信号的一侧相邻的频谱量子没有占用并且与信号的另一侧相邻的频谱量子被占用时，该方法使发射信号的带宽增长率增加一倍。 该方法利用CR无线设备的位置知识和带边缘智能地使用频谱栅栏量子。
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公开(公告)号：US06922432B2
公开(公告)日：2005-07-26
申请号：US09803258
申请日：2001-03-09
CPC分类号： H04B1/707
摘要： A signaling system is provided in which a spread spectrum code is cyclically shifted by a cyclical shift dictated by a bit pattern of one or more bits. The cyclically shifted spread spectrum code is used to modulate a carrier frequency, and transmitted from a transmitter to a receiver. At the receiver the signal including the cyclically shifted spectrum code is demodulated to recover the cyclically shifted code. The cyclical shift is then determined and the bit pattern which is associated with the cyclical shift is output. The method can be used in direct sequence spread spectrum communication.
摘要翻译： 提供了一种信号系统，其中扩频码被循环移位由一个或多个位的位模式指示的循环移位。 循环移位扩频码用于调制载波频率，并从发射机发射到接收机。 在接收机处，解调包括循环移位的频谱码的信号以恢复循环移位码。 然后确定循环移位，并输出与循环移位相关联的位模式。 该方法可用于直接序列扩频通信。
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公开(公告)号：US06594317B2
公开(公告)日：2003-07-15
申请号：US10029038
申请日：2002-04-08
IPC分类号： H04L2700
CPC分类号： H04B1/707 , H04B14/026 , H04L23/02
摘要： A method and apparatus for encoding and decoding signals using code position modulation (CPM) in a communication system. The encoding method includes storing an N-chip pseudo-random noise sequence, such as an m-sequence, in a circular shift register and circularly shifting it to obtain a shifted m-sequence. The shifted m-sequence is compared to an m-bit symbol corresponding to the k bit information value. If the shifted m-sequence and the m-symbol match, the shifted m-sequence is output as the N-chip CPM sequence. Alternatively, the m-symbol is used as an initial condition for a pseudo-noise sequence generator. The corresponding decoder stores an N-chip m-sequence in a circular shift register and a correlates shifted version of the m-sequence with a received N-chip CPM sequence. When a peak in the correlation value is detected, an m-bit field is retrieved from the circular shift register and mapped back to a k-bit information value.
摘要翻译： 一种在通信系统中使用码位置调制（CPM）对信号进行编码和解码的方法和装置。 编码方法包括在圆形移位寄存器中存储诸如m序列的N码片伪随机噪声序列，并循环移位它以获得移位的m序列。 将移位的m序列与对应于k位信息值的m位符号进行比较。 如果移位的m序列和m符号匹配，则移位的m序列作为N码片CPM序列输出。 或者，将m符号用作伪噪声序列发生器的初始条件。 相应的解码器将N-码片m序列存储在循环移位寄存器中，并将m序列的移位版本与接收的N码片CPM序列进行相关。 当检测到相关值中的峰值时，从圆形移位寄存器检索m比特字段并将其映射回到k比特信息值。
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公开(公告)号：US08340168B2
公开(公告)日：2012-12-25
申请号：US13206605
申请日：2011-08-10
IPC分类号： H04B3/46
摘要： A method, system, network and device provide Smart Grid Radio Frequency Interference (RFI) detection. One or more symbols or chips present in one or more received radio frequency signals are detected and the presence of one or more erred symbols or chips in the detected one or more symbols present in the received one or more radio frequency signals determined. A correlation in time between the one or more erred symbols or chips and an infrastructure waveform associated with electrical infrastructure can be determined. When the determined correlation indicates the electrical infrastructure as a source of detectable radio frequency interference to a device, a pattern flag is generated. The pattern flag or pattern flag representation can be stored and/or transmitted.
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公开(公告)号：US06745038B2
公开(公告)日：2004-06-01
申请号：US09845467
申请日：2001-04-30
IPC分类号： H04Q720
CPC分类号： H04W52/24 , H04B17/27 , H04B17/318 , H04W52/08
摘要： A technique for intra-piconet location determination and tomography is described. This technique uses received signal strength indicator (RSSI) values in conjunction with transmitted power levels to determine the relative location of each device within a small network employing frequency hopped spread spectrum transmission. In addition to the location determination properties of the invention, the geometry of the devices in the network, as well as the path loss information between pairs of devices, may be used to infer the location of absorbers and reflectors within the piconet. This absorption and reflection information may be used in creating the piconet tomography. The approach described in this specification may be applied in conjunction with the Bluetooth wireless Personal Area Network (PAN) specification to determine device locations, mitigate the effects of multi-path, and perform indoor location and security functions, and other application functions requiring cost-effective location determination.
摘要翻译： 描述了用于微微网位置确定和断层摄影的技术。 该技术结合发射功率电平使用接收信号强度指示符（RSSI）值来确定使用跳频扩频传输的小型网络内的每个设备的相对位置。 除了本发明的位置确定性质之外，网络中的设备的几何形状以及设备对之间的路径损耗信息可以用于推断微微网内的吸收器和反射器的位置。 该吸收和反射信息可以用于创建微微子层析成像。 本说明书中描述的方法可以与蓝牙无线个人局域网（PAN）规范结合使用，以确定设备位置，减轻多路径的影响，以及执行室内位置和安全功能，以及需要成本效益的其他应用功能， 有效位置确定。
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9.发明授权公开(公告)号：US06597915B2
公开(公告)日：2003-07-22
申请号：US10022944
申请日：2001-12-18
申请人： Qicai Shi , Edgar H. Callaway, Jr. , Jian Huang
发明人： Qicai Shi , Edgar H. Callaway, Jr. , Jian Huang
IPC分类号： H04Q720
CPC分类号： H04W4/02 , H04W40/246 , H04W40/248 , H04W84/18 , H04W84/22
摘要： Location related information is collected for a network of communication devices that each is operable in a coordinating mode and in a non-coordinating mode. While in the coordinating mode, each communication device collects and stores location determining information (410, 420). Using the location determining information collected by one or more of the communication devices over multiple instances of operation in the coordinating mode, location information is calculated or updated for selected devices within the network (510, 520, 530, 540). In one embodiment, each device operates to mediate communication activities among others devices of the network while in the coordinating mode.
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公开(公告)号：US09124131B2
公开(公告)日：2015-09-01
申请号：US13556615
申请日：2012-07-24
CPC分类号： H02J1/14 , G01R31/3693 , G01R31/40 , H02S50/00
摘要： A method, apparatus, and device provide for the control of the power sourcing capability of a power source that supplies power to a device. A detection element of the device is operable to dynamically detect a power sourcing capability of the power source. A control element of the device is operable to monitor the detected power sourcing capability of the power source and to control the power source to effect a change in the power sourcing capability of the power source in response to a determination that the detected power sourcing capability of the power source is in violation of a threshold value.
摘要翻译： 方法，装置和装置提供用于控制向装置供电的电源的电源能力的控制。 设备的检测元件可操作以动态地检测电源的供电能力。 该装置的控制元件可操作以响应于确定所检测到的电力来源能力的确定来监测电源的检测到的电力供应能力并且控制电源来实现电源的电源能力的变化， 电源违反阈值。
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