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1. 发明授权

US08774209B2 Apparatus and method for spectrum sharing using listen-before-talk with quiet periods 有权
标题翻译：用静音方式进行频谱共享的装置和方法
公开(公告)号：US08774209B2
公开(公告)日：2014-07-08
申请号：US12852128
申请日：2010-08-06
申请人： Ahmed K. Sadek , Stephen J. Shellhammer
发明人： Ahmed K. Sadek , Stephen J. Shellhammer
IPC分类号： H04L12/413 , H04W74/00
CPC分类号： H04W16/14 , H04W72/082 , H04W74/0808
摘要： Apparatus and method for spectrum sharing using listen before talk (LBT) and quiet periods are disclosed. This includes assessing using LBT to determine if a shared spectrum channel is being used by at least one other network, and transmitting transmission frames over the shared spectrum channel in at least one of an uplink or a downlink when the channel is determined as not being used. The accumulated time of transmission use of the spectrum channel is counted based on predetermined conditions, and a determination made when the accumulated time exceeds a maximum allotted time. Transmission of frames by a network is allowed to continue if the maximum time has not been exceeded and the spectrum remains available. A quiet period is then executed once the maximum time period is exceeded.
摘要翻译：公开了使用听前（LBT）和安静时段进行频谱共享的装置和方法。这包括使用LBT来评估是否由至少一个其他网络使用共享频道信道，以及当该信道被确定为不被使用时，在上行链路或下行链路中的至少一个中通过共享频道信道发送传输帧。基于预定条件计算频谱信道的传输使用的累积时间，并且当累积时间超过最大分配时间时进行确定。如果没有超过最大时间并且频谱保持可用，网络传输帧将被允许继续。一旦超过最大时间段，则执行一个安静的周期。

2. 发明授权

US08290503B2 Multichannel dynamic frequency selection 有权
标题翻译：多通道动态频率选择
公开(公告)号：US08290503B2
公开(公告)日：2012-10-16
申请号：US12695314
申请日：2010-01-28
申请人： Ahmed K. Sadek , Alexei Gorokhov , Stephen J. Shellhammer
发明人： Ahmed K. Sadek , Alexei Gorokhov , Stephen J. Shellhammer
IPC分类号： H04W72/00
CPC分类号： H04W72/082 , H04W16/14 , H04W72/0406
摘要： Multichannel dynamic frequency selection in wireless networks begins with an access point for a wireless network broadcasting a list of unused channels that are available for communication within the area served by the access point. The various access terminals within this service area receive the broadcast and measure various interference characteristics of each of the channels in the list. The access terminals then send this interference information to the access point, which compiles a matrix of interference information that is associated with the quality of each signal as related to each access terminal. Using this information, the access point selects the appropriate channels to serve the most number of access terminals at the highest possible channel qualities.
摘要翻译：无线网络中的多信道动态频率选择开始于无线网络的接入点，该接入点广播可用于由接入点服务的区域内的通信的未使用信道的列表。该服务区域内的各种接入终端接收广播并测量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发送到接入点，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。使用该信息，接入点选择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。

3. 发明申请

US20100184435A1 METHODS AND APPARATUS FOR PROVIDING A WIRELESS EXPANSION NETWORK 有权
标题翻译：提供无线扩展网络的方法和设备
公开(公告)号：US20100184435A1
公开(公告)日：2010-07-22
申请号：US12357797
申请日：2009-01-22
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Cong T. Nguyen
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Cong T. Nguyen
IPC分类号： H04W36/00 , H04W72/04
CPC分类号： H04W36/385
摘要： Methods and apparatus for providing a wireless expansion network. In an aspect, an apparatus includes an expansion circuit configured to identify at least one of a selected uplink (UL) channel and a selected downlink (DL) channel that are provided by one of a primary network and an expansion network, and a processing circuit configured to switch to the at least one of the selected UL and DL channels. An apparatus includes means for obtaining link parameters associated with a primary network and an expansion network, means for identifying clients that are assigned transmission channels on both the primary network and the expansion network based on the link parameters, and means for transmitting messages to the clients to indicate the assigned transmission channels.
摘要翻译：用于提供无线扩展网络的方法和装置。一方面，一种装置包括：扩展电路，被配置为识别由主网络和扩展网络中的一个提供的所选择的上行链路（UL）信道和选择的下行链路（DL）信道中的至少一个，以及处理电路被配置为切换到所选择的UL和DL信道中的至少一个。一种装置包括用于获得与主网络和扩展网络相关联的链路参数的装置，用于基于所述链路参数识别在主网络和扩展网络上分配了传输信道的客户端的装置，以及用于向客户端发送消息的装置以指示分配的传输信道。

4. 发明申请

US20110128895A1 APPARATUS AND METHOD FOR SPECTRUM SHARING USING LISTEN-BEFORE-TALK WITH QUIET PERIODS 有权
标题翻译：装置和方法，用于使用具有预定周期的收听前的频谱共享
公开(公告)号：US20110128895A1
公开(公告)日：2011-06-02
申请号：US12852128
申请日：2010-08-06
申请人： Ahmed K. Sadek , Stephen J. Shellhammer
发明人： Ahmed K. Sadek , Stephen J. Shellhammer
IPC分类号： H04J3/00 , H04B7/00
CPC分类号： H04W16/14 , H04W72/082 , H04W74/0808
摘要： Apparatus and method for spectrum sharing using listen before talk (LBT) and quiet periods are disclosed. This includes assessing using LBT to determine if a shared spectrum channel is being used by at least one other network, and transmitting transmission frames over the shared spectrum channel in at least one of an uplink or a downlink when the channel is determined as not being used. The accumulated time of transmission use of the spectrum channel is counted based on predetermined conditions, and a determination made when the accumulated time exceeds a maximum allotted time. Transmission of frames by a network is allowed to continue if the maximum time has not been exceeded and the spectrum remains available. A quiet period is then executed once the maximum time period is exceeded.
摘要翻译：公开了使用听前（LBT）和安静时段进行频谱共享的装置和方法。这包括使用LBT来评估是否由至少一个其他网络使用共享频道信道，以及当该信道被确定为不被使用时，在上行链路或下行链路中的至少一个中通过共享频道信道发送传输帧。基于预定条件计算频谱信道的传输使用的累积时间，并且当累积时间超过最大分配时间时进行确定。如果没有超过最大时间并且频谱保持可用，网络传输帧将被允许继续。一旦超过最大时间段，则执行一个安静的时间段。

5. 发明申请

US20110009049A1 Adjustable Transmitter For Privacy Protection Of Content Broadcast From A Transmitting Device To A Receiving Device 失效
标题翻译：可调式发射机用于从传输设备到接收设备的内容广播的隐私保护
公开(公告)号：US20110009049A1
公开(公告)日：2011-01-13
申请号：US12834342
申请日：2010-07-12
申请人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
发明人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
IPC分类号： H04H20/71
CPC分类号： H04N21/43637 , G09G5/006 , H04L65/4076 , H04L65/80 , H04N21/4122
摘要： Transmitting devices facilitate privacy protection of content broadcasted from the transmitting device to a receiving device without the need to modify the receiving device. A transmitting device may be adapted to acquire content, such as audio and/or video data, to be broadcasted by the transmitter for reception and use by a receiving device. A transmission range is selected to define a distance for broadcasting the content from the transmission device for reception and use by a receiving device. A frequency is also selected to be used for broadcasting the content. With the transmission range and frequency selected, the transmitting device may broadcast the content according to the selected transmission range and frequency.
摘要翻译：传输设备促进从发送设备广播到接收设备的内容的隐私保护，而不需要修改接收设备。发送设备可以适于获取要由发射机广播的内容，例如音频和/或视频数据，以便接收设备接收和使用。选择传输范围以定义用于从发送设备广播内容的距离，以用于接收设备的接收和使用。还选择用于广播内容的频率。在选择了传输范围和频率的情况下，发射设备可以根据所选择的传输范围和频率来广播内容。

6. 发明授权

US08626056B2 Adjustable transmitter for privacy protection of content broadcast from a transmitting device to a receiving device 失效
标题翻译：可调节发射机，用于从发射设备广播到接收设备的内容的隐私保护
公开(公告)号：US08626056B2
公开(公告)日：2014-01-07
申请号：US12834342
申请日：2010-07-12
申请人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
发明人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
IPC分类号： H04H20/71
CPC分类号： H04N21/43637 , G09G5/006 , H04L65/4076 , H04L65/80 , H04N21/4122
摘要： Transmitting devices facilitate privacy protection of content broadcasted from the transmitting device to a receiving device without the need to modify the receiving device. A transmitting device may be adapted to acquire content, such as audio and/or video data, to be broadcasted by the transmitter for reception and use by a receiving device. A transmission range is selected to define a distance for broadcasting the content from the transmission device for reception and use by a receiving device. A frequency is also selected to be used for broadcasting the content. With the transmission range and frequency selected, the transmitting device may broadcast the content according to the selected transmission range and frequency.
摘要翻译：传输设备促进从发送设备广播到接收设备的内容的隐私保护，而不需要修改接收设备。发送设备可以适于获取要由发射机广播的内容，例如音频和/或视频数据，以便接收设备接收和使用。选择传输范围以定义用于从发送设备广播内容的距离，以用于接收设备的接收和使用。还选择用于广播内容的频率。在选择了传输范围和频率的情况下，发射设备可以根据所选择的传输范围和频率来广播内容。

7. 发明申请

US20130059614A1 METHODS AND APPARATUS FOR IDENTIFYING AND/OR SELECTING CHANNELS 有权
标题翻译：识别和/或选择通道的方法和装置
公开(公告)号：US20130059614A1
公开(公告)日：2013-03-07
申请号：US13226101
申请日：2011-09-06
申请人： Sreeram Kannan , Ahmed K. Sadek , Stephen J. Shellhammer , Saurabh Tavildar , Nilesh Khude
发明人： Sreeram Kannan , Ahmed K. Sadek , Stephen J. Shellhammer , Saurabh Tavildar , Nilesh Khude
IPC分类号： H04W72/02
CPC分类号： H04W72/06 , H04W8/005
摘要： A decentralized approach to peer discovery channel selection is used in some embodiments. In some such embodiments, a mobile wireless terminal supporting a peer to peer signaling protocol, independently determines what channels to use for peer discovery without a central controller indicating the channel or channels to be used. Assuming channels are of a suitable quality, the channels having the best quality need not be identified, with channel selection being made on a predetermined channel ordering basis from those with suitable quality. Different wireless communications devices in the system use the same peer discovery channel selection process making it likely that the same channel or channels will tend to be picked to be used for peer discovery. Other embodiments are directed to implementing a centralized approach to peer discovery channel selection in which a central controller or base station selects channels to be used for peer discovery signaling.
摘要翻译：在一些实施例中使用分布式对等体发现信道选择方法。在一些这样的实施例中，支持对等信令协议的移动无线终端独立地确定用于对等体发现的哪些信道，而不指示要使用的信道或信道的中央控制器。假设信道具有合适的质量，则不需要识别具有最佳质量的信道，其中信道选择是从具有适当质量的信道选择进行的。系统中的不同的无线通信设备使用相同的对等体发现信道选择过程，使得可能相同的信道或信道将倾向于被选择用于对等体发现。其他实施例涉及实现对等体发现信道选择的集中式方法，其中中央控制器或基站选择要用于对等体发现信令的信道。

8. 发明申请

US20110045781A1 SENSING WIRELESS COMMUNICATIONS IN TELEVISION FREQUENCY BANDS 有权
标题翻译：电视频段无线通信
公开(公告)号：US20110045781A1
公开(公告)日：2011-02-24
申请号：US12858334
申请日：2010-08-17
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04B17/0057 , H04B17/26 , H04B17/318 , H04B17/382
摘要： In general, techniques are described for sensing wireless communications in television frequency bands, which may be implemented by a sensing device comprising a sensing unit, a power spectral density (PSD) estimation unit, a filter unit, a candidate selection unit, an analysis unit and a decision unit. The sensing unit senses a signal in the television frequencies bands. The PSD estimation unit calculates an estimate of a PSD for the sensed signal. The filter unit filters the estimated PSD. The candidate selection unit analyzes the filtered PSD to identify a candidate frequency representative of a potentially in use frequency. The analysis unit computes a test statistic for the candidate frequency. The decision unit compares the test statistic to a threshold to identify whether the candidate frequencies is actively in use by wireless communication devices.
摘要翻译：通常，描述了用于感测电视频带中的无线通信的技术，其可以由包括感测单元，功率谱密度（PSD）估计单元，滤波器单元，候选选择单元，分析单元和决策单位。感测单元感测电视频带中的信号。 PSD估计单元计算感测信号的PSD的估计。过滤器单元过滤估计的PSD。候选选择单元分析经滤波的PSD以识别代表潜在使用频率的候选频率。分析单元计算候选频率的测试统计量。决策单元将测试统计量与阈值进行比较，以识别候选频率是否被无线通信设备主动使用。

9. 发明授权

US09055588B2 Methods and apparatus for identifying and/or selecting channels 有权
标题翻译：用于识别和/或选择频道的方法和装置
公开(公告)号：US09055588B2
公开(公告)日：2015-06-09
申请号：US13226101
申请日：2011-09-06
申请人： Sreeram Kannan , Ahmed K. Sadek , Stephen J. Shellhammer , Saurabh Tavildar , Nilesh Khude
发明人： Sreeram Kannan , Ahmed K. Sadek , Stephen J. Shellhammer , Saurabh Tavildar , Nilesh Khude
IPC分类号： H04B7/00 , H04W72/00 , H04W72/06 , H04W8/00
CPC分类号： H04W72/06 , H04W8/005
摘要： A decentralized approach to peer discovery channel selection is used in some embodiments. In some such embodiments, a mobile wireless terminal supporting a peer to peer signaling protocol, independently determines what channels to use for peer discovery without a central controller indicating the channel or channels to be used. Assuming channels are of a suitable quality, the channels having the best quality need not be identified, with channel selection being made on a predetermined channel ordering basis from those with suitable quality. Different wireless communications devices in the system use the same peer discovery channel selection process making it likely that the same channel or channels will tend to be picked to be used for peer discovery. Other embodiments are directed to implementing a centralized approach to peer discovery channel selection in which a central controller or base station selects channels to be used for peer discovery signaling.
摘要翻译：在一些实施例中使用分布式对等体发现信道选择方法。在一些这样的实施例中，支持对等信令协议的移动无线终端独立地确定用于对等体发现的哪些信道，而不指示要使用的信道或信道的中央控制器。假设信道具有合适的质量，则不需要识别具有最佳质量的信道，其中信道选择是从具有适当质量的信道选择进行的。系统中的不同的无线通信设备使用相同的对等体发现信道选择过程，使得可能相同的信道或信道将倾向于被选择用于对等体发现。其他实施例涉及实现对等体发现信道选择的集中式方法，其中中央控制器或基站选择要用于对等体发现信令的信道。

10. 发明授权

US08892050B2 Sensing wireless communications in television frequency bands 有权
标题翻译：感应电视频段的无线通信
公开(公告)号：US08892050B2
公开(公告)日：2014-11-18
申请号：US12858334
申请日：2010-08-17
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04B17/0057 , H04B17/26 , H04B17/318 , H04B17/382
摘要： In general, techniques are described for sensing wireless communications in television frequency bands, which may be implemented by a sensing device comprising a sensing unit, a power spectral density (PSD) estimation unit, a filter unit, a candidate selection unit, an analysis unit and a decision unit. The sensing unit senses a signal in the television frequencies bands. The PSD estimation unit calculates an estimate of a PSD for the sensed signal. The filter unit filters the estimated PSD. The candidate selection unit analyzes the filtered PSD to identify a candidate frequency representative of a potentially in use frequency. The analysis unit computes a test statistic for the candidate frequency. The decision unit compares the test statistic to a threshold to identify whether the candidate frequencies is actively in use by wireless communication devices.
摘要翻译：通常，描述了用于感测电视频带中的无线通信的技术，其可以由包括感测单元，功率谱密度（PSD）估计单元，滤波器单元，候选选择单元，分析单元和决策单位。感测单元感测电视频带中的信号。 PSD估计单元计算感测信号的PSD的估计。过滤器单元过滤估计的PSD。候选选择单元分析经滤波的PSD以识别代表潜在使用频率的候选频率。分析单元计算候选频率的测试统计量。决策单元将测试统计量与阈值进行比较，以识别候选频率是否被无线通信设备主动使用。

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