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1. 发明申请

WO2011075155A1 METHOD AND APPARATUS FOR DETECTING TRANSMITTERS FOR A WHITE SPACE DEVICE 审中-公开
标题翻译：用于检测白色空间设备的发射机的方法和装置
公开(公告)号：WO2011075155A1
公开(公告)日：2011-06-23
申请号：PCT/US2010/000100
申请日：2010-01-15
申请人： THOMSON LICENSING , KNUTSON, Paul Gothard , GAO, Wen , ZHANG, Benyuan , CHEN, Hou-Shin
发明人： KNUTSON, Paul Gothard , GAO, Wen , ZHANG, Benyuan , CHEN, Hou-Shin
IPC分类号： H04N7/24 , H04W72/00
CPC分类号： H04B1/0475 , H04L12/66 , H04N21/43615 , H04N21/43637 , H04W28/04
摘要： The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and / or video programs between a home gateway and a client and mitigating interference thereon. Specifically, the present invention relates to transmitting an audio / video program on two white space channels and alternately stopping transmission on one of said channels to search for external transmissions on the white space channel. The present invention permits the wireless home gateway to continuously transmit an audio / video program to a client while periodically searching for transmitters on each of the white space channels.
摘要翻译：本发明涉及无线家庭网关设备和在家庭网关和客户端之间无线地传送音频和/或视频节目的方法，并减轻其上的干扰。具体而言，本发明涉及在两个白色空间信道上发送音频/视频节目，并且交替地停止在所述信道之一上的传输以搜索空白信道上的外部传输。本发明允许无线家庭网关在每个白色空间信道周期性地搜索发射机的同时，将音频/视频节目连续发送到客户端。

2. 发明申请

WO2011075154A1 METHOD AND APPARATUS FOR INTERFERENCE MITIGATION IN A WIRELESS HOME GATEWAY INTERFACE 审中-公开
标题翻译：无线家庭网关接口干扰减轻的方法和装置
公开(公告)号：WO2011075154A1
公开(公告)日：2011-06-23
申请号：PCT/US2010/000093
申请日：2010-02-09
申请人： THOMSON LICENSING , KNUTSON, Paul, Gothard , GAO, Wen , ZHANG, Benyuan , CHEN, Hou-Shin
发明人： KNUTSON, Paul, Gothard , GAO, Wen , ZHANG, Benyuan , CHEN, Hou-Shin
IPC分类号： H04N7/24 , H04W72/00
CPC分类号： H04B1/0475 , H04L12/66 , H04N21/43615 , H04N21/43637 , H04W28/04
摘要： The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client device and to interference mitigation techniques on such system. Specifically, the invention relates to transmitting an audio video program on a first channel, receiving a control signal from a remote control indicating interference on said first channel, changing the transmission channel to a second channel, and transmitting data indicating said second channel to said remote control.
摘要翻译：本发明涉及无线家庭网关设备和在家庭网关和客户端设备之间无线传送音频和/或视频节目的方法以及在这种系统上的干扰减轻技术。具体地，本发明涉及在第一信道上发送音频视频节目，从遥控器接收指示对所述第一信道的干扰的控制信号，将传输信道改变为第二信道，以及向所述远端发送指示所述第二信道的数据控制。

3. 发明申请

WO2012026935A1 WHITE SPACE USAGE FOR WIRELESS LOCAL AREA NETWORK DEVICES 审中-公开
标题翻译：用于无线本地区域网络设备的白色空间
公开(公告)号：WO2012026935A1
公开(公告)日：2012-03-01
申请号：PCT/US2010/046727
申请日：2010-08-26
申请人： THOMSON LICENSING , GAO, Wen , CHEN, Hou-Shin
发明人： GAO, Wen , CHEN, Hou-Shin
IPC分类号： H04J3/06 , H04W16/14
CPC分类号： H04W72/0446 , H04J3/0641 , H04J3/0673 , H04W16/14 , H04W36/0061 , H04W48/10 , H04W48/16 , H04W56/0015 , H04W56/002 , H04W72/044 , H04W84/12 , H04W88/08
摘要： A method and apparatus are described including defining a neighbor set for each access point, selecting a first clock in a first access point, the selected clock having a highest accuracy as a grand master clock, advising neighboring access points to synchronize with the selected grand master clock and transmitting a message to schedule a quiet period based on the grand master clock. Also described are a method and apparatus including receiving a beacon message, inspecting clock descriptors in the beacon message, selecting a best master clock responsive to the inspection and transmitting a message to schedule a quiet period based on the selected best master clock.
摘要翻译：描述了一种方法和装置，包括为每个接入点定义邻居集合，在第一接入点中选择第一时钟，所选择的时钟具有最高精度作为大主时钟，建议相邻接入点与所选择的大主机同步时钟，并发送消息，以根据大主时钟安排安静时段。还描述了一种方法和装置，包括接收信标消息，检查信标消息中的时钟描述符，响应于检查选择最佳主时钟，并且基于所选择的最佳主时钟发送消息以安排安静时段。

4. 发明申请

WO2010056357A2 FEC FRAME HEADER DESIGN FOR CABLE TELEVISION SIGNALS 审中-公开
标题翻译：用于电缆电视信号的FEC帧头设计
公开(公告)号：WO2010056357A2
公开(公告)日：2010-05-20
申请号：PCT/US2009/006130
申请日：2009-11-16
申请人： THOMSON LICENSING , GAO, Wen , CHEN, Hou-Shin , KABUTZ, Marten , ZHOU, Wei
发明人： GAO, Wen , CHEN, Hou-Shin , KABUTZ, Marten , ZHOU, Wei
IPC分类号： H04L1/00
CPC分类号： H04L1/0057 , H04L1/0003 , H04L1/0072
摘要： Efficient and reliable FEC frame header improvements suitable for headers for data packets in a digital cable television transmission system are provided. In one embodiment, the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and physical layer pipe identifier. Besides the signaling of physical layer related information, the FEC frame header has to provide a structure so that it can be easily and reliably detected in the receiver. A frame header for Forward Error Correction (FEC) encoded frames is designed for use in the DVB-C2 Standard with an extra bit to convey additional information. The FEC frame block can also include the FEC header for the subsequent FEC data block to increase robustness. The power level of the FEC header can also be increased relative to the data portion. Different modulation methods can be used for the FEC frame header depending on the modulation method used for the FEC frame data portion. These techniques increase the flexibility and robustness of FEC header detection.
摘要翻译：提供了适用于数字有线电视传输系统中的数据分组头部的高效可靠的FEC帧头改进。在一个实施例中，将DVB-C2标准，自适应编码和调制（ACM）或可变编码和调制（VCM）应用于每个FEC块以提供尽可能多的灵活性。结果，在每个FEC帧的前面附加帧头，以通知编码率，调制类型和物理层管道标识符。除了物理层相关信息的信令之外，FEC帧报头必须提供一种可以在接收机中容易且可靠地检测的结构。用于前向纠错（FEC）编码帧的帧头被设计用于具有额外位的DVB-C2标准以传送附加信息。 FEC帧块还可以包括用于后续FEC数据块的FEC报头以增加鲁棒性。也可以相对于数据部分增加FEC报头的功率级。根据用于FEC帧数据部分的调制方法，不同的调制方法可用于FEC帧报头。这些技术增加了FEC报头检测的灵活性和鲁棒性。

5. 发明申请

WO2009045244A1 TIME-FREQUENCY SYNCHRONIZATION AND FRAME NUMBER DETECTION FOR DMB-T SYSTEMS 审中-公开
标题翻译： DMB-T系统的时频同步和帧数检测
公开(公告)号：WO2009045244A1
公开(公告)日：2009-04-09
申请号：PCT/US2008/008930
申请日：2008-07-23
申请人： THOMSON LICENSING , CHEN, Hou-Shin , GAO, Wen
发明人： CHEN, Hou-Shin , GAO, Wen
IPC分类号： H04L7/08 , H04L27/26
CPC分类号： H04L7/08 , H04L7/041 , H04L7/043 , H04L27/2602 , H04L27/2656 , H04L27/2675
摘要： A DMB-T receiver supports a single carrier (SC) form of modulation and a multi-carrier form of modulation such as orthogonal frequency division multiplexing (OFDM). Upon receiving a broadcast signal, the DMB-T receiver downconverts the received broadcast signal to a received base-band signal and determines a frame number for each frame by correlating groups of the received symbols in adjacent signal frames. In particular, the receiver determines a maximum right-shift correlation value and a maximum left-shift correlation value. If the magnitude of the maximum right-shift correlation value is greater than, or equal to, the magnitude of the maximum left-shift correlation value, then the maximum right shift correlation value is used to retrieve a frame number from a look-up table. Otherwise, the negative value of the maximum left-shift correlation value is used to retrieve a frame number from the look-up table.
摘要翻译： DMB-T接收机支持单载波（SC）形式的调制和诸如正交频分复用（OFDM）的多载波调制形式。在接收到广播信号时，DMB-T接收机将所接收的广播信号下变频为接收到的基带信号，并通过相邻信号帧中接收的符号组相关来确定每帧的帧号。特别地，接收机确定最大右移相关值和最大左移相关值。如果最大右移相关值的大小大于或等于最大左移相关值的幅度，则最大右移相关值用于从查找表中检索帧号。否则，最大左移相关值的负值用于从查找表中检索帧号。

6. 发明申请

WO2012099562A1 METHOD AND APPARATUS FOR SPECTRUM SENSING OF WIRELESS MICROPHONE SIGNALS 审中-公开
标题翻译：用于无线麦克风信号的频谱感测的方法和装置
公开(公告)号：WO2012099562A1
公开(公告)日：2012-07-26
申请号：PCT/US2011/000092
申请日：2011-01-18
申请人： THOMSON LICENSING , CHEN, Hou-Shin , GAO, Wen
发明人： CHEN, Hou-Shin , GAO, Wen
IPC分类号： H04J11/00 , H04B1/719
CPC分类号： H04R29/004 , H04K3/822 , H04K2203/12 , H04R3/00 , H04R2410/00 , H04R2420/07 , H04R2430/00
摘要： A method and apparatus for spectrum sensing for general wireless microphone signals are provided. The spectrum sensing algorithm developed makes use of the property that the autocorrelation function of a wireless microphone signal is a sinusoidal function provided that the frequency deviation is much smaller than the carrier frequency and the correlation delay is small. Based on this property, a simple spectrum sensing algorithm for the wireless microphone signal is designed by computing the autocorrelation function of the received signal and matched filtering of the sinusoidal function. The tones detected are further verified to see if they are located at one of the possible wireless microphone frequencies.
摘要翻译：提供了一种用于一般无线麦克风信号的频谱感测的方法和装置。开发的频谱感知算法利用无线麦克风信号的自相关函数为正弦函数的性质，只要频率偏差远小于载波频率，相关延迟小。基于该性质，通过计算接收信号的自相关函数和正弦函数的匹配滤波来设计无线麦克风信号的简单频谱感知算法。检测到的音调被进一步验证，以查看它们是否位于可能的无线麦克风频率之一。

7. 发明申请

WO2011115672A1 METHODS AND APPARATUS FOR MEDIA ACCESS CONTROL IN TV WHITE SPACE 审中-公开
标题翻译：电视白天媒体访问控制的方法与装置
公开(公告)号：WO2011115672A1
公开(公告)日：2011-09-22
申请号：PCT/US2011/000476
申请日：2011-03-15
申请人： CHEN, Hou-Shin , GAO, Wen , THOMSON LICENSING
发明人： CHEN, Hou-Shin , GAO, Wen
IPC分类号： H04W16/14
CPC分类号： H04W72/1231 , H04W16/14 , H04W52/243 , H04W72/0413 , H04W84/12
摘要： Methods and apparatus for using 802.11 Wireless LANs in TV white space that allow networks with overlapping wireless regions to coexist. The methods and apparatus offer a solution to the mutated hidden node problem. Wireless devices communicate with a coexistence manager over a backhaul connection. Signals are sent by a low power station indicating a request to use a portion of spectrum. The coexistence manager communicates with a plurality of second stations that transmit at a higher power level. The plurality of second stations either send a signal to the first station indicating that it can transmit, or send signals so that the first station can determine which interference it is receiving, after which the coexistence manager tells the interfering station to transmit a signal to the first station indicating when it can transmit.
摘要翻译：在电视白色空间中使用802.11无线局域网的方法和装置，允许具有重叠无线区域的网络共存。该方法和设备提供了突变隐藏节点问题的解决方案。无线设备通过回程连接与共存管理器进行通信。信号由低电站发送，指示使用频谱的一部分的请求。共存管理器与以更高功率级发送的多个第二站通信。多个第二站向第一站发送指示其可以发送的信号，或发送信号，使得第一站可以确定其正在接收的干扰，之后共存管理器告知干扰站将信号发送到第一站指示何时可以发送。

8. 发明申请

WO2010134978A1 METHOD AND APPARATUS FOR SPECTRUM SENSING OF FM WIRELESS MICROPHONE SIGNALS 审中-公开
标题翻译： FM无线麦克风信号的频谱感测方法与装置
公开(公告)号：WO2010134978A1
公开(公告)日：2010-11-25
申请号：PCT/US2010/001467
申请日：2010-05-18
申请人： THOMSON LICENSING , CHEN, Hou-Shin , GAO, Wen
发明人： CHEN, Hou-Shin , GAO, Wen
IPC分类号： H04B17/00
CPC分类号： H04B17/382 , H04B17/26
摘要： Methods and apparatus for spectrum sensing for FM wireless microphone signals are provided. The spectrum sensing algorithm developed makes use of the property that the autocorrelation function of an FM signal is a sinusoidal function provided that the frequency deviation is much smaller than the carrier frequency and the correlation delay is small. Based on this property, a simple spectrum sensing algorithm for the FM signal is designed by computing the autocorrelation function of the received signal and matched filtering of the sinusoidal function. The spectrum sensor provided by this approach can reliably detect the target signals when a strong adjacent channel interference exists and the signal power is as low as -114 dBm.
摘要翻译：提供了FM无线麦克风信号的频谱感测方法和装置。开发的频谱感知算法利用FM信号的自相关函数为正弦函数的性质，只要频率偏差远小于载波频率，相关延迟小。基于该性质，通过计算接收信号的自相关函数和正弦函数的匹配滤波来设计FM信号的简单频谱感知算法。当存在强相邻信道干扰并且信号功率低至-114dBm时，由该方法提供的频谱传感器可以可靠地检测目标信号。

9. 发明申请

WO2010120340A1 METHOD AND APPARATUS FOR SPECTRUM SENSING OF ATSC AND NTSC TELEVISION SIGNALS 审中-公开
标题翻译：用于ATSC和NTSC电视信号的频谱感测的方法和装置
公开(公告)号：WO2010120340A1
公开(公告)日：2010-10-21
申请号：PCT/US2010/000961
申请日：2010-03-31
申请人： THOMSON LICENSING , CHEN, Hou-Shin , GAO, Wen
发明人： CHEN, Hou-Shin , GAO, Wen
IPC分类号： H04B17/00
CPC分类号： H04N21/4383 , H04B17/26 , H04B17/382 , H04N5/50
摘要： Methods and apparatus for spectrum sensing for the presence of ATSC digital television signals and NTSC analog television signals in the VHF/UHF TV bands are provided. Similar time-domain signal structures for the ATSC and NTSC signals are used to perform spectrum sensing. For ATSC digital television signals, a Segment-Sync based spectrum sensing method is provided, based upon the correlation of Segment Sync symbols inserted in the beginning of each data segment. Additionally, a general adjacent channel interference alleviation scheme by using a narrower receiver filter is also provided. For NTSC analog TV signals, a horizontal-sync based spectrum sensing method is provided which is based upon the correlation of horizontal sync signals present at the beginning of each line of an NTSC analog TV signal. The proposed spectrum sensors can reliably detect the target signals when a strong adjacent channel interference exists and the signal power is as low as dBm as set in FCC test models.
摘要翻译：提供了用于在VHF / UHF TV频带中存在ATSC数字电视信号和NTSC模拟电视信号的频谱感测的方法和装置。用于ATSC和NTSC信号的相似时域信号结构用于执行频谱感测。对于ATSC数字电视信号，基于在每个数据段的开头插入的段同步符号的相关性，提供基于段同步的频谱感测方法。此外，还提供了通过使用较窄的接收机滤波器的通用相邻信道干扰减轻方案。对于NTSC模拟TV信号，提供基于水平同步的频谱感测方法，其基于存在于NTSC模拟TV信号的每行开始处的水平同步信号的相关性。所提出的频谱传感器可以在存在强相邻信道干扰并且信号功率低至FCC测试模型中设置的dBm时可靠地检测目标信号。

10. 发明申请

WO2008108796A1 APPARATUS AND METHOD FOR SENSING A MULTI-CARRIER SIGNAL USING CYCLOSTATIONARITY 审中-公开
标题翻译：用于感测使用循环的多载波信号的装置和方法
公开(公告)号：WO2008108796A1
公开(公告)日：2008-09-12
申请号：PCT/US2007/014573
申请日：2007-06-20
申请人： THOMSON LICENSING , CHEN, Hou-Shin , GAO, Wen
发明人： CHEN, Hou-Shin , GAO, Wen
IPC分类号： H04L27/26 , H04L27/00 , H04N5/44
CPC分类号： H04L27/2647 , H04L27/0012 , H04L27/2602
摘要： A Wireless Regional Area Network (WRAN) endpoint determines for each of a plurality of transmission modes an autocorrelation value from a received signal, where the autocorrelation value is averaged over the length of a corresponding cyclic prefix. The WRAN endpoint then determines the transmission mode for the received signal as being that transmission mode having the largest averaged autocorrelation value.
摘要翻译：无线区域网络（WRAN）端点从接收信号中确定多个传输模式中的每一个的自相关值，其中自相关值在相应的循环前缀的长度上被平均。然后，WRAN端点将接收信号的传输模式确定为具有最大平均自相关值的传输模式。

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