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1. 发明申请

WO2008061044A3 SYSTEMS AND METHODS FOR DETECTING THE PRESENCE OF A TRANSMISSION SIGNAL IN A WIRELESS CHANNEL 审中-公开
标题翻译：用于检测无线信道中传输信号的存在的系统和方法
公开(公告)号：WO2008061044A3
公开(公告)日：2008-07-10
申请号：PCT/US2007084369
申请日：2007-11-10
申请人： QUALCOMM INC , SHELLHAMMER STEPHEN J
发明人： SHELLHAMMER STEPHEN J
IPC分类号： H04B1/46
CPC分类号： H04B1/46 , H04W4/18 , H04W24/00
摘要： A method for detecting the presence of a transmission signal in a wireless spectrum channel. The frequency of a signal is converted from a first frequency to a second frequency. The signal with the second frequency is filtered to remove signals that are not within the band of the second frequency. An averaged periodogram of the signal is calculated. A value of the averaged periodogram is compared to a threshold. The presence of the transmission signal is detected, if the value of the averaged periodogram exceeds the threshold.
摘要翻译：一种在无线频谱信道中检测发送信号的存在的方法。信号的频率从第一频率转换为第二频率。对具有第二频率的信号进行滤波以除去不在第二频率的频带内的信号。计算信号的平均周期图。将平均周期图的值与阈值进行比较。如果平均周期图的值超过阈值，则检测到发送信号的存在。

2. 发明申请

WO2010088578A3 DISTRIBUTED PRIORITIZED CONTENTION FOR SPECTRUM SHARING 审中-公开
标题翻译：用于分光共享的分布式优先注意
公开(公告)号：WO2010088578A3
公开(公告)日：2011-06-09
申请号：PCT/US2010022681
申请日：2010-01-31
申请人： QUALCOMM INC , SADEK AHMED K , SHELLHAMMER STEPHEN J
发明人： SADEK AHMED K , SHELLHAMMER STEPHEN J
IPC分类号： H04L5/00 , H04W16/14
CPC分类号： H04L5/0033 , H04L5/0035 , H04W16/14 , H04W74/085
摘要： Techniques for use in contending for a portion of a television channel spectrum are disclosed. In some instances, a back-off value is used to decide whether a contender's contention number will be transmitted when the contention channel is free, and the back-off value is determined based on the contention number. In some instances, a contender monitors the contention channel and withdraws from contention if it detects from the contention channel that a higher priority contender is in contention.
摘要翻译：公开了用于竞争电视频道频谱的一部分的技术。在某些情况下，使用退避值来决定竞争者的竞争号码是否在竞争信道是空闲时被发送，并且基于竞争号确定退避价值。在某些情况下，如果竞争者从争用频道中检测到较高优先级的竞争者在争夺中，则竞争者监视争用通道并退出争用。

3. 发明申请

WO2011011558A2 METHODS AND APPARATUS FOR SPECTRUM SENSING OF SIGNAL FEATURES IN A WIRELESS CHANNEL 审中-公开
标题翻译：用于无线信道中的信号特征的频谱感测的方法和设备
公开(公告)号：WO2011011558A2
公开(公告)日：2011-01-27
申请号：PCT/US2010042816
申请日：2010-07-21
申请人： QUALCOMM INC , SHELLHAMMER STEPHEN J
发明人： SHELLHAMMER STEPHEN J
IPC分类号： H04B17/00
CPC分类号： H04W16/14 , H04B7/0837 , H04B17/26 , H04B17/382 , H04W72/085
摘要： Methods and apparatus for sensing features of a signal in a wireless communication system are disclosed. The disclosed methods and apparatus sense signal features by determining a number of spectral density estimates, where each estimate is derived based on reception of the signal by a respective antenna in a system with multiple sensing antennas. The spectral density estimates are then combined, and the signal features are sensed based on the combination of the spectral density estimates.
摘要翻译：公开了用于感测无线通信系统中的信号的特征的方法和设备。所公开的方法和设备通过确定多个频谱密度估计来感测信号特征，其中每个估计是基于由具有多个感测天线的系统中的相应天线接收信号而导出的。然后组合谱密度估计，并且基于谱密度估计的组合来感测信号特征。

4. 发明申请

WO2012061504A3 PROTOCOLS FOR ENABLING MODE 1 AND MODE 2 DEVICES IN TV WHITE SPACE NETWORKS 审中-公开
标题翻译：用于启用电视空白网络的模式1和模式2设备的协议
公开(公告)号：WO2012061504A3
公开(公告)日：2012-08-02
申请号：PCT/US2011058966
申请日：2011-11-02
申请人： QUALCOMM INC , ABRAHAM SANTOSHM PAUL , JAIN AVINASH , SHELLHAMMER STEPHEN J , SAMPATH HEMANTH
发明人： ABRAHAM SANTOSHM PAUL , JAIN AVINASH , SHELLHAMMER STEPHEN J , SAMPATH HEMANTH
IPC分类号： H04W72/04 , H04W16/14
CPC分类号： H04W72/0453 , H04L5/0096 , H04W16/14 , H04W88/06
摘要： Certain aspects of the present disclosure provide techniques and apparatus for operating in a television white space (TVWS) network. One example method generally includes receiving, at an apparatus, a message with a field indicating a current version of an unused frequency spectrum map (e.g., a white space map (WSM)), the unused frequency spectrum map indicating channels usable for wireless communications; determining whether the current version of the unused frequency spectrum map is different than a previous version of the unused frequency spectrum map; and using a channel for wireless communications based on the determination. Another example method generally includes accessing a database of available channels for a current location of an apparatus via a neighboring portable or fixed enabling apparatus and enabling one or more portable dependent apparatuses for the wireless communications via one or more of the available channels.
摘要翻译：本公开的某些方面提供了用于在电视空白（TVWS）网络中操作的技术和装置。一个示例性方法通常包括在装置处接收具有指示未使用频谱图（例如，空白映射（WSM））的当前版本的字段的消息，该未使用频谱图指示可用于无线通信的信道; 确定当前版本的未使用频谱图是否与未使用的频谱图的先前版本不同; 以及基于该确定使用用于无线通信的信道。另一示例性方法通常包括经由相邻的便携式或固定的启用设备访问设备的当前位置的可用信道的数据库，并且使得一个或多个便携式依赖设备能够经由一个或多个可用信道进行无线通信。

5. 发明申请

WO2012112801A3 MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE 审中-公开
标题翻译：管理发射功率，在电视白色空间中实现更好的频率再利用
公开(公告)号：WO2012112801A3
公开(公告)日：2012-12-27
申请号：PCT/US2012025495
申请日：2012-02-16
申请人： QUALCOMM INC , ABRAHAM SANTOSH PAUL , VERMANI SAMEER , SAMPATH HEMANTH , SHELLHAMMER STEPHEN J , TANDRA RAHUL
发明人： ABRAHAM SANTOSH PAUL , VERMANI SAMEER , SAMPATH HEMANTH , SHELLHAMMER STEPHEN J , TANDRA RAHUL
IPC分类号： H04W52/08 , H04L1/00 , H04W52/24 , H04W52/36 , H04W52/50 , H04W74/08
CPC分类号： H04W52/04 , H04B7/12 , H04L1/0002 , H04L1/0009 , H04L1/0027 , H04L1/06 , H04W16/14 , H04W52/325 , H04W52/367 , H04W74/0816
摘要： Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. One example method generally includes transmitting a sequence of request-to-send (RTS) messages at different transmit power levels to an apparatus and determining if a clear-to-send (CTS) message was received in response to at least one of the RTS messages corresponding to a particular one of the transmit power levels. Another example method generally includes receiving, at a first apparatus from a second apparatus, a packet that cannot be decoded by the first apparatus; determining at least one of a time or a duration corresponding to the packet; transmitting a query with an indication of the at least one of the time or the duration; and receiving a message from the second apparatus in response to the query, the message identifying the second apparatus as a source of the packet.
摘要翻译：本公开的某些方面提供了用于管理电视白色空间（TVWS）网络中的发射功率的技术和装置。一个示例性方法通常包括以不同的发射功率电平发送请求发送（RTS）消息序列到设备，并且响应于RTS中的至少一个来确定是否接收到清除发送（CTS）消息消息对应于特定的一个发射功率电平。另一示例方法一般包括在第一装置处从第二装置接收不能被第一装置解码的分组; 确定对应于所述分组的时间或持续时间中的至少一个; 传送具有所述时间或所述持续时间中的所述至少一者的指示的查询; 以及响应于所述查询从所述第二装置接收消息，所述消息将所述第二装置标识为所述分组的源。

6. 发明申请

WO2011091405A3 METHOD AND APPARATUS FOR SPECTRAL SENSING 审中-公开
标题翻译：用于光谱感测的方法和装置
公开(公告)号：WO2011091405A3
公开(公告)日：2011-11-03
申请号：PCT/US2011022372
申请日：2011-01-25
申请人： QUALCOMM INC , QUAN ZHI , SHELLHAMMER STEPHEN J , ZHANG WENYI
发明人： QUAN ZHI , SHELLHAMMER STEPHEN J , ZHANG WENYI
IPC分类号： H04L27/00
CPC分类号： H04L27/0006
摘要： An apparatus for wireless communication includes a processing system. The processing system is configured to estimate a power spectral density of a first signal. In addition, the processing system is configured to determine a normalized correlation detector between the estimated power spectral density and a known power spectral density of a second signal. Furthermore, the processing system is configured to determine whether the first signal contains the second signal based on the normalized correlation detector.
摘要翻译：一种用于无线通信的装置包括处理系统。处理系统被配置为估计第一信号的功率谱密度。此外，处理系统被配置为确定估计的功率谱密度和第二信号的已知功率谱密度之间的归一化相关检测器。此外，处理系统被配置为基于归一化相关检测器来确定第一信号是否包含第二信号。

7. 发明申请

WO2010088586A3 DYNAMIC FREQUENCY SELECTION IN A COGNITIVE RADIO SYSTEM 审中-公开
标题翻译：认知无线电系统中的动态频率选择
公开(公告)号：WO2010088586A3
公开(公告)日：2010-09-23
申请号：PCT/US2010022704
申请日：2010-02-01
申请人： QUALCOMM INC , SADEK AHMED K , GOROKHOV ALEXEI Y , SHELLHAMMER STEPHEN J
发明人： SADEK AHMED K , GOROKHOV ALEXEI Y , SHELLHAMMER STEPHEN J
IPC分类号： H04W16/14 , H04W72/08
CPC分类号： H04W72/082 , H04W16/14 , H04W72/0406
摘要： Multichannel dynamic frequency selection in wireless networks (10, 20) begins with an access point (90, 100, 200) for a wireless network broadcasting a list of unused channels (300, 905) that are available for communication within the area served by the access point. The various access terminals (80, 101, 201) within this service area receive the broadcast and measure (401) various interference characteristics of each of the channels in the list. The access terminals then send (402) this interference information (301, 505) to the access point, which compiles a matrix of interference information (906) that is associated with the quality of each signal as related to each access terminal. Using this information, the access point selects (302, 702) the appropriate channels to serve the most number of access terminals at the highest possible channel qualities.
摘要翻译：无线网络（10,20）中的多信道动态频率选择从无线网络的接入点（90,100,200）开始，所述无线网络广播无用信道列表（300,905），所述未使用信道可用于在由切入点。该服务区域内的各种接入终端（80,101,201）接收广播并测量（401）列表中每个频道的各种干扰特性。接入终端然后将该干扰信息（402a）发送（402）到接入点，该接入点编译与每个接入终端相关的每个信号的质量相关联的干扰信息矩阵（906）。使用该信息，接入点选择（302,702）适当的信道，以尽可能高的信道质量来服务于最多的接入终端。

8. 发明申请

WO2010062631A2 SPATIO-TEMPORAL RANDOM VOTING SCHEME FOR COGNITIVE NETWORKS 审中-公开
标题翻译：用于认知网络的空间随机投票计划
公开(公告)号：WO2010062631A2
公开(公告)日：2010-06-03
申请号：PCT/US2009062278
申请日：2009-10-28
申请人： QUALCOMM INC , KIM YONG JIN , DONDETI LAKSHMINATH R , SHELLHAMMER STEPHEN J , ZHANG WENYI
发明人： KIM YONG JIN , DONDETI LAKSHMINATH R , SHELLHAMMER STEPHEN J , ZHANG WENYI
IPC分类号： H04W16/00
CPC分类号： H04W24/00 , H04W72/02 , H04W72/082 , H04W84/18
摘要： A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.
摘要翻译：提供了一种时空随机投票方案，其包括来自认知网络内的多个感测装置的信息收集中的位置分布，空间随机性和时间随机性。该区域被分成多个扇区，其中每个扇区是区域的一部分。从区域中的多个扇区中选择扇区的子集以提供空间随机性。从扇区子集中的每个扇区随机选择一个设备，以向信息收集过程提供额外的空间随机性。可以通过在感测窗口周期内随机选择时隙来引入时间随机性，其中设备将扫描频谱带以确定是否检测到高于阈值的信号能量。然后从所选择的感测装置收集感测报告，并用于确定频谱带是可用还是正在使用。

9. 发明申请

WO2012061504A8 PROTOCOLS FOR ENABLING MODE 1 AND MODE 2 DEVICES IN TV WHITE SPACE NETWORKS 审中-公开
标题翻译：用于启用电视空白网络的模式1和模式2设备的协议
公开(公告)号：WO2012061504A8
公开(公告)日：2013-05-02
申请号：PCT/US2011058966
申请日：2011-11-02
申请人： QUALCOMM INC , ABRAHAM SANTOSH PAUL , JAIN AVINASH , SHELLHAMMER STEPHEN J , SAMPATH HEMANTH
发明人： ABRAHAM SANTOSH PAUL , JAIN AVINASH , SHELLHAMMER STEPHEN J , SAMPATH HEMANTH
IPC分类号： H04W72/04 , H04W16/14
CPC分类号： H04W72/0453 , H04L5/0096 , H04W16/14 , H04W88/06
摘要： Certain aspects of the present disclosure provide techniques and apparatus for operating in a television white space (TVWS) network. One example method generally includes receiving, at an apparatus, a message with a field indicating a current version of an unused frequency spectrum map (e.g., a white space map (WSM)), the unused frequency spectrum map indicating channels usable for wireless communications; determining whether the current version of the unused frequency spectrum map is different than a previous version of the unused frequency spectrum map; and using a channel for wireless communications based on the determination. Another example method generally includes accessing a database of available channels for a current location of an apparatus via a neighboring portable or fixed enabling apparatus and enabling one or more portable dependent apparatuses for the wireless communications via one or more of the available channels.
摘要翻译：本公开的某些方面提供了用于在电视空白（TVWS）网络中操作的技术和装置。一个示例性方法通常包括在装置处接收具有指示未使用频谱图（例如，空白映射（WSM））的当前版本的字段的消息，该未使用频谱图指示可用于无线通信的信道; 确定当前版本的未使用频谱图是否与未使用的频谱图的先前版本不同; 以及基于该确定使用用于无线通信的信道。另一示例性方法通常包括经由相邻的便携式或固定的启用设备访问设备的当前位置的可用信道的数据库，并且使得一个或多个便携式依赖设备能够经由一个或多个可用信道进行无线通信。

10. 发明申请

WO2011085026A3 DISTINGUISHING AND COMMUNICATING BETWEEN WHITE SPACE DEVICES TRANSMITTING ATSC-COMPATIBLE SIGNALS 审中-公开
标题翻译：在传输ATSC兼容信号的白色空间设备之间进行识别和通信
公开(公告)号：WO2011085026A3
公开(公告)日：2011-09-09
申请号：PCT/US2011020256
申请日：2011-01-05
申请人： QUALCOMM INC , SADEK AHMED K , ZHANG WENYI , JAIN AVINASH , SHELLHAMMER STEPHEN J , ARYAN BABAK , RAVEENDRAN VIJAYALAKSHMI , BERGAN CHARLES A
发明人： SADEK AHMED K , ZHANG WENYI , JAIN AVINASH , SHELLHAMMER STEPHEN J , ARYAN BABAK , RAVEENDRAN VIJAYALAKSHMI , BERGAN CHARLES A
IPC分类号： H04N5/44
CPC分类号： H04H20/33 , H04H20/30 , H04H60/07 , H04L5/005 , H04L5/0062 , H04N5/4401 , H04W16/14
摘要： White space signals are differentiated from licensed ATSC signals through modification of a waveform of the white space signal. White space signals may be modified by shifting the ATSC-compatible waveform so that the pilot frequency of the white space signal is at a location outside of the frequency range associated with the pilot frequency in a licensed ATSC signal or embedding a watermark signal into said ATSC-like white space signals. White space device transmitters generate the signals with these modifications and white space receivers are equipped to detect whether a pilot exists in the standard licensed pilot frequencies. Based on these differences, white space devices can better operate without interfering with licensed ATSC transmission. Additionally, the modification techniques may be used to embed data in the white space signal that may be used to communicate connection data or networking data to other white space devices.
摘要翻译：通过修改白色空间信号的波形，将白色空间信号与许可的ATSC信号区分开来。可以通过移动ATSC兼容波形来修改空白信号，使得空白空间信号的导频位于与许可的ATSC信号中的导频相关联的频率范围之外的位置，或者将水印信号嵌入到所述ATSC 类白色空间信号。白色空间设备发射机通过这些修改产生信号，白色空间接收机用于检测标准许可导频中是否存在导频。基于这些差异，白色空间设备可以更好地运行而不会干扰许可的ATSC传输。另外，修改技术可以用于将数据嵌入到可用于将连接数据或网络数据传送给其他空白空间设备的空白空间信号中。

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