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1. 发明授权

US06275543B1 Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing 有权
公开(公告)号：US06275543B1
公开(公告)日：2001-08-14
申请号：US09153110
申请日：1998-09-15
申请人： Paul Petrus , Alain M. Chiodini , Mitchell D. Trott , David M. Parish , Michael Youssefmir , Dov Rosenfeld
发明人： Paul Petrus , Alain M. Chiodini , Mitchell D. Trott , David M. Parish , Michael Youssefmir , Dov Rosenfeld
IPC分类号： H04L2714
CPC分类号： H04L27/2332 , H04B7/0851 , H04L1/06 , H04L2027/003 , H04L2027/0046 , H04L2027/0095
摘要： A method for generating a reference signal from a modulated signal transmitted to a communications station that includes an array of antenna elements and spatial processing means including: separating from the signals received at the antenna elements a copy signal corresponding to the signal transmitted by a particular remote station using an initial spatial weight vector corresponding to the particular remote station; determining from the terminal copy signal a reference signal having substantially the same frequency offset and time alignment as the received antenna signals; and computing a new spatial weight vector by optimizing a cost function, the cost function using the received antenna signals and the reference signal. For demodulation, the method further includes extracting the symbols of the modulated signal.

2. 发明授权

US06839573B1 Apparatus and method for beamforming in a changing-interference environment 有权
标题翻译：在变化干扰环境中波束成形的装置和方法
公开(公告)号：US06839573B1
公开(公告)日：2005-01-04
申请号：US09704393
申请日：2000-10-31
申请人： Michael Youssefmir , Mitchell D. Trott , Kamarai Karuppiah , Paul Petrus
发明人： Michael Youssefmir , Mitchell D. Trott , Kamarai Karuppiah , Paul Petrus
IPC分类号： H01Q3/26 , H04B7/06 , H04B7/08 , H04B7/10 , H04B7/26 , H04L1/06 , H04M1/00
CPC分类号： H04B7/0615 , H04B7/0617 , H04B7/0619 , H04B7/0848 , H04B7/0851 , H04B7/086 , H04L25/0204 , H04L25/021 , H04L25/03203 , H04L25/0328 , H04L25/03299
摘要： An apparatus and method for adaptively producing transmitted signals and processing received signals in a communication system which includes smart antenna array of antenna elements. When processing received signals, the invention modifies an existing processing scheme by incorporating information about a second set of signals for which training or other characteristic information such as a reference is unknown to information about a first set of signals for which characteristic information such as a reference is known, prior to executing the processing scheme. This approach can be used to modify the receive weights which determine the relative weight assigned to the signals received from each of a plurality of antenna elements to take into account the presence of a changing interference environment. This permits an adaptive updating of the receive weights based on the additional information provided by the second set of data, and may be accomplished faster and with less computational resources than required to determine the weights based on applying the entire processing scheme to the second set of data. In addition, assuming a relationship between the transmit and receive environment, the invention can also be used to modify the transmit weights used by the base station.

3. 发明授权

US6141567A Apparatus and method for beamforming in a changing-interference environment 有权
标题翻译：在变化干扰环境中波束成形的装置和方法
公开(公告)号：US6141567A
公开(公告)日：2000-10-31
申请号：US327776
申请日：1999-06-07
申请人： Michael Youssefmir , Mitchell D. Trott , Kamaraj Karuppiah , Paul Petrus
发明人： Michael Youssefmir , Mitchell D. Trott , Kamaraj Karuppiah , Paul Petrus
IPC分类号： H01Q3/26 , H04B7/06 , H04B7/08 , H04B7/10 , H04B7/26 , H04L1/06 , H04B7/00
CPC分类号： H04B7/0615 , H04B7/0619 , H04B7/0848 , H04B7/0851 , H04L25/0204 , H04L25/021 , H04B7/0617 , H04B7/086 , H04L25/03203 , H04L25/0328 , H04L25/03299
摘要： An apparatus and method for adaptively producing transmitted signals and processing received signals in a communication system which includes smart antenna array of antenna elements. When processing received signals, the invention modifies an existing processing scheme by incorporating information about a second set of signals for which training or other characteristic information such as a reference is unknown to information about a first set of signals for which characteristic information such as a reference is known, prior to executing the processing scheme. This approach can be used to modify the receive weights which determine the relative weight assigned to the signals received from each of a plurality of antenna elements to take into account the presence of a changing interference environment. This permits an adaptive updating of the receive weights based on the additional information provided by the second set of data., and may be accomplished faster and with less computational resources than required to determine the weights based on applying the entire processing scheme to the second set of data. In addition, assuming a relationship between the transmit and receive environment, the invention can also be used to modify the transmit weights used by the base station.
摘要翻译：一种用于在包括天线元件的智能天线阵列的通信系统中自适应地产生发射信号和处理接收信号的装置和方法。在处理接收到的信号时，本发明通过并入关于第二组信号的信息来修改现有的处理方案，对于这样的第二组信号，训练或诸如参考的其他特征信息对于关于哪个特征信息例如参考的第一组信号的信息是未知的在执行处理方案之前是已知的。该方法可以用于修改接收权重，其确定分配给从多个天线元件中的每个天线元件接收的信号的相对权重，以考虑变化的干扰环境的存在。这允许基于由第二组数据提供的附加信息来适应性地更新接收权重，并且可以比基于将整个处理方案应用于第二组来确定权重所需的更快和更少的计算资源来实现更少的计算资源数据的。此外，假设发送和接收环境之间的关系，本发明也可以用于修改由基站使用的发送权重。

4. 发明授权

US06983127B1 Statistical calibration of wireless base stations 失效
标题翻译：无线基站的统计校准
公开(公告)号：US06983127B1
公开(公告)日：2006-01-03
申请号：US10209500
申请日：2002-07-31
申请人： Serge Barbosa Da Torre , David M. Parish , Athos Kasapi , Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
发明人： Serge Barbosa Da Torre , David M. Parish , Athos Kasapi , Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
IPC分类号： H04B17/00
CPC分类号： H04B17/20 , H04B7/04 , H04B7/0634 , H04B17/10
摘要： The present invention allows a radio receiver or a transmitter, with a plurality of antennas configured into an array, to be calibrated. In one embodiment, the method includes receiving a plurality of signals from a plurality of remote transmitters at the antenna array, sampling the signals received at at least two antennas of the array, computing a relative phase and amplitude of the sampled signals for each antenna, and computing calibration coefficients based on the relative phase and amplitude for the plurality of sampled signals from the plurality of remote transmitters for each antenna.
摘要翻译：本发明允许校准具有配置成阵列的多个天线的无线电接收机或发射机。在一个实施例中，该方法包括从天线阵列处的多个远程发射机接收多个信号，对在阵列的至少两个天线处接收的信号进行采样，计算每个天线的采样信号的相对相位和幅度，以及基于每个天线的来自多个远程发射机的多个采样信号的相对相位和幅度来计算校准系数。

5. 发明授权

US06795409B1 Cooperative polling in a wireless data communication system having smart antenna processing 失效
标题翻译：具有智能天线处理的无线数据通信系统中的合作轮询
公开(公告)号：US06795409B1
公开(公告)日：2004-09-21
申请号：US09677460
申请日：2000-09-29
申请人： Michael Youssefmir , Mitchell D. Trott , Roger Rogard
发明人： Michael Youssefmir , Mitchell D. Trott , Roger Rogard
IPC分类号： H04B700
CPC分类号： H04W16/28 , H04B7/0617 , H04B7/086 , H04W16/00 , H04W74/06
摘要： A method, communication device, and machine-readable medium. The method includes sending a first poll from a first base station having a smart antenna system to a first user terminal. The first base station receives a first uplink response signal from the first user terminal as a result of the first user terminal successfully receiving the first poll. The first base station also receives at least one other uplink response signals as a result of at least one other remote user terminal successfully receiving a second poll from a second base station. The first base station transmits downlink data to the first user terminal using a downlink smart antenna processing strategy for transmitting to the first user terminal, including mitigating interference to the first and one or more other remote communication devices from which the first base station received a first or other uplink response signal and that may be receiving during transmission of downlink data to the first user terminal. The downlink smart antenna processing strategy is using the first and other received uplink response signals. The first base station uses a first protocol with its associated user terminals and the second base stations uses a second protocol that is coordinated with the first protocol to enable the first base station to receive the first and other uplink response signals from second and one or more other remote communication devices that may be receiving during the step of transmitting downlink data to the first user terminal.
摘要翻译：一种方法，通信装置和机器可读介质。该方法包括从具有智能天线系统的第一基站向第一用户终端发送第一轮询。作为第一用户终端成功接收第一轮询的结果，第一基站从第一用户终端接收第一上行响应信号。作为至少一个其他远程用户终端从第二基站成功接收第二轮询的结果，第一基站还接收至少一个其它上行响应信号。第一基站使用用于向第一用户终端发送的下行链路智能天线处理策略向第一用户终端发送下行链路数据，包括减轻对第一和一个或多个其他远程通信设备的干扰，第一基站从该第一用户终端接收第一用户终端或其他上行链路响应信号，并且可能在向第一用户终端发送下行链路数据期间接收。下行链路智能天线处理策略正在使用第一和其他接收的上行响应信号。第一基站使用具有其相关联的用户终端的第一协议，并且第二基站使用与第一协议协调的第二协议，以使第一基站能够从第二和第一基站接收第一和其它上行响应信号在向第一用户终端发送下行链路数据的步骤期间可能正在接收的其他远程通信设备。

6. 发明申请

US20120099459A1 RADIO COMMUNICATIONS SYSTEM WITH A MINIMAL BROADCAST CHANNEL 有权
标题翻译：具有最小广播频道的无线电通信系统
公开(公告)号：US20120099459A1
公开(公告)日：2012-04-26
申请号：US13342175
申请日：2012-01-02
申请人： CHRISTOPHER R. UHLIK , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
发明人： CHRISTOPHER R. UHLIK , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
IPC分类号： H04W72/04 , H04W24/00 , H04W52/04 , H04L12/26 , H04B17/00 , H04B1/715
CPC分类号： H04W48/12 , H04B1/713
摘要： In one embodiment, the present invention comprises transmitting a broadcast burst in a broadcast channel from a base station of a radio communications system. The invention further comprises receiving a request burst from a user terminal, and transmitting a message burst from the base station to the user terminal from which the request was received. The message burst includes a description of the channels available on the radio communications system for receiving messages from user terminals.
摘要翻译：在一个实施例中，本发明包括从无线电通信系统的基站在广播信道中发送广播脉冲串。本发明还包括从用户终端接收请求脉冲串，以及从基站向接收到该请求的用户终端发送消息突发。消息突发包括在无线电通信系统上可用于从用户终端接收消息的信道的描述。

7. 发明授权

US07158493B1 Radio communications system with a minimal broadcast channel 有权
标题翻译：具有最小广播频道的无线电通信系统
公开(公告)号：US07158493B1
公开(公告)日：2007-01-02
申请号：US09675748
申请日：2000-09-29
申请人： Christopher Richard Uhlik , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
发明人： Christopher Richard Uhlik , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
IPC分类号： H04Q7/00
CPC分类号： H04W48/12 , H04B1/713
摘要： In one embodiment, the present invention comprises transmitting a broadcast burst in a broadcast channel from a base station of a radio communications system. The invention further comprises receiving a request burst from a user terminal, and transmitting a message burst from the base station to the user terminal from which the request was received. The message burst includes a description of the channels available on the radio communications system for receiving messages from user terminals.
摘要翻译：在一个实施例中，本发明包括从无线电通信系统的基站在广播信道中发送广播脉冲串。本发明还包括从用户终端接收请求脉冲串，以及从基站向接收到该请求的用户终端发送消息突发。消息突发包括在无线电通信系统上可用于从用户终端接收消息的信道的描述。

8. 发明授权

US08532048B2 Radio communications system with a minimal broadcast channel 有权
标题翻译：具有最小广播频道的无线电通信系统
公开(公告)号：US08532048B2
公开(公告)日：2013-09-10
申请号：US13342175
申请日：2012-01-02
申请人： Christopher Richard Uhlik , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
发明人： Christopher Richard Uhlik , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
IPC分类号： H04B7/00 , H04J3/00
CPC分类号： H04W48/12 , H04B1/713
摘要： In one embodiment, the present invention comprises transmitting a broadcast burst in a broadcast channel from a base station of a radio communications system. The invention further comprises receiving a request burst from a user terminal, and transmitting a message burst from the base station to the user terminal from which the request was received. The message burst includes a description of the channels available on the radio communications system for receiving messages from user terminals.
摘要翻译：在一个实施例中，本发明包括从无线电通信系统的基站在广播信道中发送广播脉冲串。本发明还包括从用户终端接收请求脉冲串，以及从基站向接收到该请求的用户终端发送消息突发。消息突发包括在无线电通信系统上可用于从用户终端接收消息的信道的描述。

9. 发明授权

US08089925B1 Radio communications system with a minimal broadcast channel 有权
标题翻译：具有最小广播频道的无线电通信系统
公开(公告)号：US08089925B1
公开(公告)日：2012-01-03
申请号：US11583754
申请日：2006-10-18
申请人： Christopher Richard Uhlik , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
发明人： Christopher Richard Uhlik , Michael Youssefmir , Mitchell D. Trott , Craig H. Barratt
IPC分类号： H04B7/00 , H04J3/00
CPC分类号： H04W48/12 , H04B1/713
摘要： In one embodiment, the present invention comprises transmitting a broadcast burst in a broadcast channel from a base station of a radio communications system. The invention further comprises receiving a request burst from a user terminal, and transmitting a message burst from the base station to the user terminal from which the request was received. The message burst includes a description of the channels available on the radio communications system for receiving messages from user terminals.
摘要翻译：在一个实施例中，本发明包括从无线电通信系统的基站在广播信道中发送广播脉冲串。本发明还包括从用户终端接收请求脉冲串，以及从基站向接收到该请求的用户终端发送消息突发。消息突发包括在无线电通信系统上可用于从用户终端接收消息的信道的描述。

10. 发明授权

US07512109B2 Slot structure for radio communications system 失效
标题翻译：无线电通信系统的插槽结构
公开(公告)号：US07512109B2
公开(公告)日：2009-03-31
申请号：US10262108
申请日：2002-09-30
申请人： Mitchell D. Trott , Mithat C. Dogan , Paul Petrus , Sundar G. Sankaran
发明人： Mitchell D. Trott , Mithat C. Dogan , Paul Petrus , Sundar G. Sankaran
IPC分类号： H04B7/212
CPC分类号： H04B7/0851 , H04B7/2656 , H04B7/2659 , H04L27/18
摘要： In one embodiment, the present invention includes a slot in a repeating time division frame with a first training sequence, an information sequence after the first training sequence, and a second training sequence after the information sequence. In some embodiments either the first or the second training sequences indicates a type for the information sequence, such as a random access channel message and a traffic channel message, a configuration message, a channel assignment message, or a data traffic message.
摘要翻译：在一个实施例中，本发明包括具有第一训练序列，第一训练序列之后的信息序列和信息序列之后的第二训练序列的重复时分帧中的时隙。在一些实施例中，第一或第二训练序列指示信息序列的类型，诸如随机接入信道消息和业务信道消息，配置消息，信道分配消息或数据业务消息。

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