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公开(公告)号：US20130010632A1
公开(公告)日：2013-01-10
申请号：US13635341
申请日：2011-10-20
IPC分类号： H04W24/10
CPC分类号： H04B17/309 , H04B17/24
摘要： A method of simultaneously providing channel quality feedback information in all valid sub-channels is provided to facilitate and improve the performance of dynamic transmission bandwidth adjustment and fast link adaptation. A receiving device receives a sounding signal over a wide channel in a wireless system. The sounding signal is transmitted from a transmitting device over multiple sub-channels of the wide channel. The receiving device estimates channel quality information based on the sounding signal for each sub-channel. The channel quality information includes estimated average SNR and recommended MCS and other channel quality metrics. The receiving device transmits a feedback message to the transmitting device. The feedback message contains the estimated channel quality information for all valid sub-channels within the transmission bandwidth. The transmitting device performs dynamic transmission bandwidth selection and fast link adaptation based on the channel quality information for all valid sub-channels.
摘要翻译： 提供了一种在所有有效子信道中同时提供信道质量反馈信息的方法，以促进和改进动态传输带宽调整和快速链路自适应的性能。 接收设备在无线系统中通过宽频道接收探测信号。 探测信号通过宽信道的多个子信道从发送设备发送。 接收装置基于每个子信道的探测信号来估计信道质量信息。 信道质量信息包括估计的平均SNR和推荐的MCS等信道质量度量。 接收装置向发送装置发送反馈消息。 反馈消息包含传输带宽内所有有效子信道的估计信道质量信息。 发送设备根据所有有效子信道的信道质量信息，执行动态传输带宽选择和快速链路自适应。
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2.发明申请Integrity and Quality Monitoring and Signaling for Sounding and Reduced Feedback 审中-公开完整性和质量监测和信号发声和减少反馈公开(公告)号：US20130058239A1
公开(公告)日：2013-03-07
申请号：US13635360
申请日：2011-10-20
IPC分类号： H04W24/00
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/065 , H04B7/0658 , H04L1/0026 , H04L1/0028 , H04L25/0226 , H04L25/0228
摘要： A method of sounding and feedback with channel quality information and reduced overhead is provided. A receiving station receives a sounding signal transmitted from an access point over multiple sub-channels of a wide channel in a wireless network. The receiving station detects channel quality based on the received sounding signal for each sub-channel. The receiving station then performs channel estimation based on the received sounding signal and thereby determining feedback information. Finally, the receiving station transmits a feedback message to the access point, the feedback message contains NULL feedback information, reduced feedback information, or channel integrity/quality indicators based on the channel quality information for each sub-channel. Based on the feedback message, the access point may repeat the sounding process, narrow the transmission bandwidth, or select only stations who have indicated uncorrupted channel sounding for MU-MMO transmission.
摘要翻译： 提供了一种利用信道质量信息和降低开销的声音和反馈方法。 接收站通过无线网络中的宽信道的多个子信道接收从接入点发送的探测信号。 接收站基于接收到的每个子信道的探测信号来检测信道质量。 然后，接收站基于接收的探测信号进行信道估计，从而确定反馈信息。 最后，接收站向接入点发送反馈消息，反馈消息基于每个子信道的信道质量信息包含NULL反馈信息，减少的反馈信息或信道完整性/质量指示符。 基于反馈消息，接入点可以重复发声过程，缩小传输带宽，或仅选择指示MU-MMO传输不通道信道探测的台。
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公开(公告)号：US09258070B2
公开(公告)日：2016-02-09
申请号：US13635341
申请日：2011-10-20
IPC分类号： H04W4/00 , H04B17/309 , H04B17/24
CPC分类号： H04B17/309 , H04B17/24
摘要： A method of simultaneously providing channel quality feedback information in all valid sub-channels is provided to facilitate and improve the performance of dynamic transmission bandwidth adjustment and fast link adaptation. A receiving device receives a sounding signal over a wide channel in a wireless system. The sounding signal is transmitted from a transmitting device over multiple sub-channels of the wide channel. The receiving device estimates channel quality information based on the sounding signal for each sub-channel. The channel quality information includes estimated average SNR and recommended MCS and other channel quality metrics. The receiving device transmits a feedback message to the transmitting device. The feedback message contains the estimated channel quality information for all valid sub-channels within the transmission bandwidth. The transmitting device performs dynamic transmission bandwidth selection and fast link adaptation based on the channel quality information for all valid sub-channels.
摘要翻译： 提供了一种在所有有效子信道中同时提供信道质量反馈信息的方法，以促进和改进动态传输带宽调整和快速链路自适应的性能。 接收设备在无线系统中通过宽频道接收探测信号。 探测信号通过宽信道的多个子信道从发送设备发送。 接收装置基于每个子信道的探测信号来估计信道质量信息。 信道质量信息包括估计的平均SNR和推荐的MCS等信道质量度量。 接收装置向发送装置发送反馈消息。 反馈消息包含传输带宽内所有有效子信道的估计信道质量信息。 发送设备根据所有有效子信道的信道质量信息，执行动态传输带宽选择和快速链路自适应。
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公开(公告)号：US08804559B2
公开(公告)日：2014-08-12
申请号：US13373305
申请日：2011-11-10
CPC分类号： H04W24/00 , H04L1/0026 , H04L1/06 , H04L25/0208 , H04L43/50
摘要： A method of monitoring channel-sounding quality for VHT WiFi devices is provided. A mobile station (the receiver) receives a sounding signal transmitted from an access point (the transmitter) over one or multiple sub-channels of a wide channel in a wireless network. The receiver performs channel estimation and determines an estimated channel response matrix. The receiver then calculates sounding quality for each valid sub-channel by computing an estimation error of the received sounding signal based on the estimated channel matrix. The receiver transmits a feedback message to the transmitter. The feedback message contains sounding quality information derived from the calculated channel sounding quality. If the channel sounding qualities for all valid sub-channels are poor, then a null VHT channel feedback frame is sent back to the transmitter.
摘要翻译： 提供了一种监测VHT WiFi设备的通道音质的方法。 移动站（接收机）通过无线网络中的宽信道的一个或多个子信道接收从接入点（发射机）发送的探测信号。 接收机执行信道估计并确定估计的信道响应矩阵。 然后，接收机通过基于估计的信道矩阵计算接收到的探测信号的估计误差来计算每个有效子信道的探测质量。 接收机向发射机发送反馈消息。 反馈消息包含从计算的声道探测质量得到的探测质量信息。 如果所有有效子信道的信道探测质量差，则将零VHT信道反馈帧发送回发射机。
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公开(公告)号：US20120120839A1
公开(公告)日：2012-05-17
申请号：US13373305
申请日：2011-11-10
IPC分类号： H04W24/00
CPC分类号： H04W24/00 , H04L1/0026 , H04L1/06 , H04L25/0208 , H04L43/50
摘要： A method of monitoring channel-sounding quality for VHT WiFi devices is provided. A mobile station (the receiver) receives a sounding signal transmitted from an access point (the transmitter) over one or multiple sub-channels of a wide channel in a wireless network. The receiver performs channel estimation and determines an estimated channel response matrix. The receiver then calculates sounding quality for each valid sub-channel by computing an estimation error of the received sounding signal based on the estimated channel matrix. The receiver transmits a feedback message to the transmitter. The feedback message contains sounding quality information derived from the calculated channel sounding quality. If the channel sounding qualities for all valid sub-channels are poor, then a null VHT channel feedback frame is sent back to the transmitter.
摘要翻译： 提供了一种监测VHT WiFi设备的通道音质的方法。 移动站（接收机）通过无线网络中的宽信道的一个或多个子信道接收从接入点（发射机）发送的探测信号。 接收机执行信道估计并确定估计的信道响应矩阵。 然后，接收机通过基于估计的信道矩阵计算接收到的探测信号的估计误差来计算每个有效子信道的探测质量。 接收机向发射机发送反馈消息。 反馈消息包含从计算的声道探测质量得到的探测质量信息。 如果所有有效子信道的信道探测质量差，则将零VHT信道反馈帧发送回发射机。
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公开(公告)号：US09088984B2
公开(公告)日：2015-07-21
申请号：US12728748
申请日：2010-03-22
CPC分类号： H04W72/0466 , H04B7/04 , H04L5/0023 , H04L5/0037 , H04L5/0094 , H04L5/1484 , H04W36/16 , H04W52/322 , H04W72/042
摘要： The present invention relates to demodulation of radio signals from a base station having collocated transmit antennas, and more particularly to signaling allocation information from a base station to a mobile terminal. The allocation information may include timeslot and code information of allocation to other mobile terminals. Some embodiments of the present invention facilitate a mobile terminal's ability to receive and demodulate a signal containing multiple interfering signals by communicating codes allocated to other mobile terminals.
摘要翻译： 本发明涉及从具有并置发射天线的基站解调无线电信号，更具体地说，涉及从基站到移动终端的信令分配信息。 分配信息可以包括分配给其他移动终端的时隙和代码信息。 本发明的一些实施例便于移动终端通过传送分配给其他移动终端的代码来接收和解调包含多个干扰信号的信号的能力。
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公开(公告)号：US08428085B2
公开(公告)日：2013-04-23
申请号：US13159832
申请日：2011-06-14
IPC分类号： H04J3/16
CPC分类号： H04W72/005 , H04W8/26 , H04W84/042
摘要： A cellular communication system (100) comprises management logic (146) having broadcast mode logic (150) arranged to support a common cell identifier reuse pattern for broadcast transmissions amongst a cluster of communication cells. A plurality of wireless serving communication units is operably coupled to the management logic. At least one wireless communication unit comprises a receiver for receiving a broadcast signal from both a first serving wireless communication unit and a second serving wireless communication unit wherein both the first serving wireless communication unit and second serving wireless communication unit use a common cell identifier (215) reuse pattern for broadcast transmissions to be used by the at least one wireless communication unit in receiving broadcast communication across the cluster of communication cells. The at least one wireless communication unit further comprises logic arranged to detect the broadcast communication from both the first serving wireless communication unit and second serving wireless communication unit, where the broadcast communication is allocated to the first timeslot (350) or first sub-frame based on it being more robust to multipath delay due to temporal dispersion of the same broadcast signal from a plurality of wireless serving communication units.
摘要翻译： 蜂窝通信系统（100）包括具有广播模式逻辑（150）的管理逻辑（146），其布置成支持通信小区之间的广播传输的公共小区标识符重用模式。 多个无线服务通信单元可操作地耦合到管理逻辑。 至少一个无线通信单元包括用于从第一服务无线通信单元和第二服务无线通信单元接收广播信号的接收机，其中第一服务无线通信单元和第二服务无线通信单元都使用公共小区标识符（215 ）重用模式，用于由所述至少一个无线通信单元在跨所述通信小区群集中接收广播通信时使用的广播传输。 所述至少一个无线通信单元还包括布置成从所述第一服务无线通信单元和第二服务无线通信单元检测广播通信的逻辑，其中所述广播通信被分配给所述第一时隙（350）或第一子帧 由于来自多个无线服务通信单元的相同广播信号的时间分散，对于多径延迟更加鲁棒。
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公开(公告)号：US20080311859A1
公开(公告)日：2008-12-18
申请号：US12052405
申请日：2008-03-20
IPC分类号： H04B7/00
CPC分类号： H04B7/043
摘要： Channel estimation in a MIMO communications system comprises performing a decomposition of an initial channel matrix estimate associated with a first subcarrier of a plurality thereof defined in the channel to identify eigenvectors associated with that subcarrier of the received signal, and defining a first beamforming transformation to be applied to the received signal on the basis of the eigenvectors. Then, for each of the other subcarriers, an additional decomposition is performed in order to determine a further beamforming transformation for each of said one or more other subcarriers, wherein said additional decompositions are carried out incrementally such that information determined in one of said decompositions contributes to a later executed decomposition. Further described is a method of transmitting from a multiple antenna transmitter defining a plurality of subcarriers in space, and time or frequency, comprising the same iterative process. This transmitting can be carried out using smoothed beamforming applied in accordance with aspects of the invention.
摘要翻译： MIMO通信系统中的信道估计包括执行与在信道中定义的多个第一子载波相关联的初始信道矩阵估计的分解，以识别与接收信号的该子载波相关联的特征向量，以及将第一波束成形变换定义为 基于特征向量应用于接收信号。 然后，对于每个其他子载波，执行附加分解，以便为所述一个或多个其他子载波中的每一个确定进一步的波束成形变换，其中所述附加分解被递增地执行，使得在所述分解之一中确定的信息贡献 到后来执行的分解。 进一步描述了一种从定义多个子载波的多天线发射机发送的方法，所述多个天线发射机在空间和时间或频率中包括相同的迭代过程。 可以使用根据本发明的方面应用的平滑波束形成来执行该发送。
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9.发明申请公开(公告)号：US20070025454A1
公开(公告)日：2007-02-01
申请号：US11190287
申请日：2005-07-26
申请人： Alan Jones , Vishakan Ponnampalam
发明人： Alan Jones , Vishakan Ponnampalam
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04J11/0056 , H04L25/0206 , H04L27/0008 , H04L27/261
摘要： An Orthogonal Frequency Division Multiplex (OFDM) communication system comprises OFDM transmitters (103-109) and an OFDM receiver (101). The system comprises a subcarrier status data controller (200) for transmitting subcarrier status data to the OFDM receiver (101). The subcarrier status data indicates the active subcarriers of the OFDM transmitters (103-109). The OFDM receiver (101) comprises a receiver (201) which receives a signal comprising a desired signal component from a first OFDM transmitter (103) and interference from at least one interfering OFDM transmitter (105). The OFDM receiver (101) further comprises a subcarrier status processor (203) which receives the subcarrier status data and a channel estimator (205) which determines channel estimates for at least an air interface communication channel from the first OFDM transmitter (103) and an air interface communication channel from the interfering OFDM transmitter (105). An interference mitigation processor (207) performs interference mitigation of the interference in response to the subcarrier status data and the channel estimates thereby providing improved recovery of the data from the first OFDM transmitter (103).
摘要翻译： 正交频分复用（OFDM）通信系统包括OFDM发射机（103-109）和OFDM接收机（101）。 该系统包括用于向OFDM接收机（101）发送子载波状态数据的副载波状态数据控制器（200）。 子载波状态数据指示OFDM发射机的有效子载波（103-109）。 OFDM接收器（101）包括接收器（201），其接收包括来自第一OFDM发射机（103）的期望信号分量的信号和来自至少一个干扰OFDM发射机（105）的干扰。 OFDM接收机（101）还包括接收子载波状态数据的子载波状态处理器（203）和确定来自第一OFDM发射机（103）的至少一个空中接口通信信道的信道估计的信道估计器（205） 来自干扰OFDM发射机（105）的空中接口通信信道。 干扰减轻处理器（207）响应于子载波状态数据和信道估计来执行干扰的干扰减轻，从而提供来自第一OFDM发射机（103）的数据的改进的恢复。
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公开(公告)号：US20050250506A1
公开(公告)日：2005-11-10
申请号：US10838983
申请日：2004-05-04
申请人： Martin Beale , Vishakan Ponnampalam
发明人： Martin Beale , Vishakan Ponnampalam
CPC分类号： H04W72/0466 , H04B7/04 , H04L5/0023 , H04L5/0037 , H04L5/0094 , H04L5/1484 , H04W36/16 , H04W52/322 , H04W72/042
摘要： The present invention relates to demodulation of radio signals from a base station having collocated transmit antennas, and more particularly to signaling allocation information from a base station to a mobile terminal. The allocation information may include timeslot and code information of allocation to other mobile terminals. Some embodiments of the present invention facilitate a mobile terminal's ability to receive and demodulate a signal containing multiple interfering signals by communicating codes allocated to other mobile terminals.
摘要翻译： 本发明涉及从具有并置发射天线的基站解调无线电信号，更具体地说，涉及从基站到移动终端的信令分配信息。 分配信息可以包括分配给其他移动终端的时隙和代码信息。 本发明的一些实施例便于移动终端通过传送分配给其他移动终端的代码来接收和解调包含多个干扰信号的信号的能力。
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