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31. 发明授权

US08520498B2 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 失效
标题翻译：基于OFDM的多天线通信系统的发射分集和空间扩展
公开(公告)号：US08520498B2
公开(公告)日：2013-08-27
申请号：US13461707
申请日：2012-05-01
申请人： Jay Rodney Walton , John Wendell Ketchum , Mark S. Wallace , Steven J. Howard , Sanjiv Nanda
发明人： Jay Rodney Walton , John Wendell Ketchum , Mark S. Wallace , Steven J. Howard , Sanjiv Nanda
IPC分类号： H04J11/10
CPC分类号： H04B7/0615 , H04B7/0413 , H04L27/2602
摘要： A multi-antenna transmitting entity transmits data to a single- or multi-antenna receiving entity using (1) a steered mode to direct the data transmission toward the receiving entity or (2) a pseudo-random transmit steering (PRTS) mode to randomize the effective channels observed by the data transmission across the subbands. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across a packet for each subband. The receiving entity does not need to have knowledge of the pseudo-random steering vectors or perform any special processing. For spatial spreading, the transmitting entity uses different pseudo-random steering vectors across the subbands and different steering vectors across the packet for each subband. Only the transmitting and receiving entities know the steering vectors used for data transmission. Other aspects, embodiments, and features are also claimed and disclosed.
摘要翻译：多天线发射实体使用（1）向接收实体指导数据传输的导向模式或（2）伪随机发射转向（PRTS）模式来将数据发送到单天线或多天线接收实体，以随机化通过子带上的数据传输观察到的有效信道。对于发射分集，发射实体在子带上使用不同的伪随机导引向量，但是在每个子带的分组上使用相同的导向向量。接收实体不需要具有伪随机导引向量的知识或执行任何特殊处理。对于空间扩展，发射实体在子带上使用不同的伪随机导引向量，并且跨每个子带的分组使用不同的导向矢量。只有发送和接收实体知道用于数据传输的导向向量。还要求和公开其他方面，实施例和特征。

32. 发明授权

US07110463B2 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system 有权
标题翻译：用于在MIMO通信系统中用于指导发射分集的空间滤波器矩阵的有效计算
公开(公告)号：US07110463B2
公开(公告)日：2006-09-19
申请号：US10882491
申请日：2004-06-30
申请人： Mark S. Wallace , Jay Rodney Walton , Steven J. Howard
发明人： Mark S. Wallace , Jay Rodney Walton , Steven J. Howard
IPC分类号： H04B7/02
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0697 , H04B7/0854
摘要： Techniques for efficiently computing spatial filter matrices are described. The channel response matrices for a MIMO channel may be highly correlated if the channel is relatively static over a range of transmission spans. In this case, an initial spatial filter matrix may be derived based on one channel response matrix, and a spatial filter matrix for each transmission span may be computed based on the initial spatial filter matrix and a steering matrix used for that transmission span. The channel response matrices may be partially correlated if the MIMO channel is not static but does not change abruptly. In this case, a spatial filter matrix may be derived for one transmission span l and used to derive an initial spatial filter matrix for another transmission span m. A spatial filter matrix for transmission span m may be computed based on the initial spatial filter matrix, e.g., using an iterative procedure.
摘要翻译：描述了有效计算空间滤波器矩阵的技术。如果信道在传输跨度的范围内是相对静态的，则用于MIMO信道的信道响应矩阵可以是高度相关的。在这种情况下，可以基于一个信道响应矩阵导出初始空间滤波器矩阵，并且可以基于初始空间滤波器矩阵和用于该传输跨度的导引矩阵来计算每个传输跨度的空间滤波器矩阵。如果MIMO信道不是静态的但是不突然改变，则信道响应矩阵可以是部分相关的。在这种情况下，可以为一个传输跨度l导出空间滤波器矩阵，并且用于导出用于另一个传输跨度m的初始空间滤波器矩阵。可以基于初始空间滤波器矩阵来计算用于传输跨度m的空间滤波器矩阵，例如使用迭代过程。

33. 发明授权

US08909174B2 Continuous beamforming for a MIMO-OFDM system 有权
标题翻译：用于MIMO-OFDM系统的连续波束成形
公开(公告)号：US08909174B2
公开(公告)日：2014-12-09
申请号：US12533765
申请日：2009-07-31
申请人： Steven J. Howard , Jay Rodney Walton , Mark S. Wallace
发明人： Steven J. Howard , Jay Rodney Walton , Mark S. Wallace
IPC分类号： H04B7/02 , H04B7/06 , H04B7/04
CPC分类号： H04B7/0617 , H04B7/0408 , H04B7/0417 , H04B7/0626 , H04B7/0671
摘要： A transmitting entity performs spatial processing on data symbols for each subband with an eigenmode matrix, a steering matrix, or an identity matrix to obtain spatially processed symbols for the subband. The data symbols may be sent on orthogonal spatial channels with the eigenmode matrix, on different spatial channels with the steering matrix, or from different transmit antennas with the identity matrix. The transmitting entity further performs beamforming on the spatially processed symbols, in the frequency domain or time domain, prior to transmission from the multiple transmit antennas. A receiving entity performs the complementary processing to recover the data symbols sent by the transmitting entity. The receiving entity may derive a spatial filter matrix for each subband based on a MIMO channel response matrix for that subband and perform receiver spatial processing for the subband with the spatial filter matrix.
摘要翻译：发送实体对具有本征模式矩阵，导向矩阵或单位矩阵的每个子带的数据符号执行空间处理，以获得子带的空间处理符号。数据符号可以在具有本征模式矩阵的正交空间信道上，在具有导引矩阵的不同空间信道上，或者从具有单位矩阵的不同发射天线发送。在从多个发射天线的发射之前，发射实体在频域或时域中进一步对空间处理的符号执行波束成形。接收实体执行补充处理以恢复由发送实体发送的数据符号。接收实体可以基于该子带的MIMO信道响应矩阵为每个子带导出空间滤波器矩阵，并且对于具有空间滤波器矩阵的子带执行接收机空间处理。

34. 发明授权

US08582430B2 Method and apparatus for wireless LAN (WLAN) data multiplexing 有权
标题翻译：无线局域网（WLAN）数据复用的方法和装置
公开(公告)号：US08582430B2
公开(公告)日：2013-11-12
申请号：US12112718
申请日：2008-04-30
申请人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
发明人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
IPC分类号： G08C15/00
CPC分类号： H04W28/065 , H04L1/1635 , H04L25/03343 , H04L29/06 , H04L47/2441 , H04L69/16 , H04L69/161 , H04L69/22 , H04L69/32 , H04W80/02 , H04W84/12
摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. Data associated with at least one MAC ID can be aggregated into a single byte stream. The single byte stream can be formatted into MAC PDUs and then muxed. The muxed MAC PDUs can then be transmitted on a single MAC frame. Muxing of the MAC PDUs can be based on the priority of the MAC PDUs or other criteria. A MAC header can comprise information about the muxed PDUs, such as a pointer, that identifies the location of the MAC PDUs within the MAC frame. A MAC frame can contain partial MAC PDUs. The transmitted muxed MAC PDUs can be retransmitted, and an acknowledgment or feedback scheme may be used to help manage the transmission of the protocol data units.
摘要翻译：公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。与至少一个MAC ID相关联的数据可以聚合成单个字节流。单字节流可以格式化为MAC PDU，然后进行多路复用。然后，多路复用MAC PDU可以在单个MAC帧上传输。 MAC PDU的复用可以基于MAC PDU的优先级或其他标准。 MAC报头可以包括关于多路复用PDU（例如指针）的信息，其标识MAC帧内的MAC PDU的位置。 MAC帧可以包含部分MAC PDU。传输的复用MAC PDU可以被重传，并且可以使用确认或反馈方案来帮助管理协议数据单元的传输。

35. 发明授权

US07372896B2 Iterative detection and decoding for a MIMO-OFDM system 有权
标题翻译： MIMO-OFDM系统的迭代检测和解码
公开(公告)号：US07372896B2
公开(公告)日：2008-05-13
申请号：US11557662
申请日：2006-11-08
申请人： Bjorn Bjerke , John W. Ketchum , Jay Rodney Walton
发明人： Bjorn Bjerke , John W. Ketchum , Jay Rodney Walton
IPC分类号： H04B1/69
CPC分类号： H04L1/005 , H04B7/0413 , H04B7/0854 , H04L1/0003 , H04L1/0009 , H04L1/0059 , H04L1/0066 , H04L1/0071 , H04L1/06 , H04L5/0023 , H04L25/03171 , H04L25/03305 , H04L25/03891 , H04L25/067 , H04L27/2647
摘要： Techniques to iteratively detect and decode data transmitted in a wireless (e.g., MIMO-OFDM) communication system. The iterative detection and decoding is performed by iteratively passing soft (multi-bit) “a priori” information between a detector and a decoder. The detector receives modulation symbols, performs a detection function that is complementary to the symbol mapping performed at the transmitter, and provides soft-decision symbols for transmitted coded bits. “Extrinsic information” in the soft-decision symbols is then decoded by the decoder to provide its extrinsic information, which comprises the a priori information used by the detector in the detection process. The detection and decoding may be iterated a number of times. The soft-decision symbols and the a priori information may be represented using log-likelihood ratios (LLRs). Techniques are provided to reduce the computational complexity associated with deriving the LLRs, including interference nulling to isolate each transmitted signal and “dual-maxima” approximation.
摘要翻译：用于迭代地检测和解码在无线（例如，MIMO-OFDM）通信系统中发送的数据的技术。迭代检测和解码通过在检测器和解码器之间迭代地传递软（多位）“先验”信息来执行。检测器接收调制符号，执行与在发射机处执行的符号映射互补的检测功能，并为发送的编码比特提供软判决符号。软判决符号中的“外在信息”然后由解码器解码以提供其外在信息，其包括检测器在检测过程中使用的先验信息。可以重复检测和解码多次。可以使用对数似然比（LLR）来表示软判决符号和先验信息。提供技术以减少与导出LLR相关联的计算复杂度，包括干扰归零以隔离每个发射信号和“双最大值”近似。

36. 发明授权

US08462817B2 Method, apparatus, and system for multiplexing protocol data units 有权
标题翻译：用于复用协议数据单元的方法，装置和系统
公开(公告)号：US08462817B2
公开(公告)日：2013-06-11
申请号：US10964320
申请日：2004-10-13
申请人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
发明人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
IPC分类号： H04J3/00
CPC分类号： H04W72/1273 , H04L29/06 , H04L69/08 , H04L69/24 , H04W28/065
摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.
摘要翻译：公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。一方面，公开了一种协议栈，其包括以下一个或多个：适配层，数据链路控制层，物理层和层管理器。在另一方面，物理层反馈用于适应层处理。在一个实施例中，物理层反馈用于分割。在另一个实施例中，物理层反馈用于到一个或多个单播信道上的多播映射。在另一方面，用于从第一站到第二站的传输的数据单元包括零个或多个完整的子数据单元，来自先前传输的零个或一个部分子数据单元，以及零个或一个部分子数据单元填写数据单元。在一个实施例中，可以使用指针来指示任何完整的子数据单元的位置。

37. 发明授权

US08472473B2 Wireless LAN protocol stack 有权
标题翻译：无线局域网协议栈
公开(公告)号：US08472473B2
公开(公告)日：2013-06-25
申请号：US10964237
申请日：2004-10-13
申请人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
发明人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
IPC分类号： H04J3/22
CPC分类号： H04W28/065 , H04L1/1635 , H04L25/03343 , H04L29/06 , H04L47/2441 , H04L69/16 , H04L69/161 , H04L69/22 , H04L69/32 , H04W80/02 , H04W84/12
摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.
摘要翻译：公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。一方面，公开了一种协议栈，其包括以下一个或多个：适配层，数据链路控制层，物理层和层管理器。在另一方面，物理层反馈用于适应层处理。在一个实施例中，物理层反馈用于分割。在另一个实施例中，物理层反馈用于到一个或多个单播信道上的多播映射。在另一方面，用于从第一站到第二站的传输的数据单元包括零个或多个完整的子数据单元，来自先前传输的零个或一个部分子数据单元，以及零个或一个部分子数据单元填写数据单元。在一个实施例中，可以使用指针来指示任何完整的子数据单元的位置。

38. 发明申请

US20090323646A1 METHOD AND APPARATUS FOR WIRLESS LAN (WLAN) DATA MULTIPLEXING 有权
标题翻译：无线局域网（WLAN）数据多路复用的方法和装置
公开(公告)号：US20090323646A1
公开(公告)日：2009-12-31
申请号：US12112718
申请日：2008-04-30
申请人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
发明人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
IPC分类号： H04W4/00
CPC分类号： H04W28/065 , H04L1/1635 , H04L25/03343 , H04L29/06 , H04L47/2441 , H04L69/16 , H04L69/161 , H04L69/22 , H04L69/32 , H04W80/02 , H04W84/12
摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. Data associated with at least one MAC ID can be aggregated into a single byte stream. The single byte stream can be formatted into MAC PDUs and then muxed. The muxed MAC PDUs can then be transmitted on a single MAC frame. Muxing of the MAC PDUs can be based on the priority of the MAC PDUs or other criteria. A MAC header can comprise information about the muxed PDUs, such as a pointer, that identifies the location of the MAC PDUs within the MAC frame. A MAC frame can contain partial MAC PDUs. The transmitted muxed MAC PDUs can be retransmitted, and an acknowledgment or feedback scheme may be used to help manage the transmission of the protocol data units.
摘要翻译：公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。与至少一个MAC ID相关联的数据可以聚合成单个字节流。单字节流可以格式化为MAC PDU，然后进行多路复用。然后，多路复用MAC PDU可以在单个MAC帧上传输。 MAC PDU的复用可以基于MAC PDU的优先级或其他标准。 MAC报头可以包括关于多路复用PDU（例如指针）的信息，其标识MAC帧内的MAC PDU的位置。 MAC帧可以包含部分MAC PDU。传输的复用MAC PDU可以被重传，并且可以使用确认或反馈方案来帮助管理协议数据单元的传输。

39. 发明授权

US08842657B2 High speed media access control with legacy system interoperability 有权
标题翻译：具有传统系统互操作性的高速媒体访问控制
公开(公告)号：US08842657B2
公开(公告)日：2014-09-23
申请号：US10964330
申请日：2004-10-13
申请人： Jay Rodney Walton , John W. Ketchum , Sanjiv Nanda
发明人： Jay Rodney Walton , John W. Ketchum , Sanjiv Nanda
IPC分类号： H04B7/212 , H04L29/06 , H04L12/66 , H04W52/38
CPC分类号： H04L12/66 , H04L29/06 , H04L69/08 , H04L69/24 , H04W52/383
摘要： Techniques for MAC processing for efficient use of high throughput systems that is backward compatible with various types of legacy systems are disclosed. In one aspect a first signal is transmitted according to a legacy transmission format to reserve a portion of a shared medium, and communication according to a second transmission format transpires during the reserved portion. In another aspect, a communication device may contend for access on a legacy system, and then communicate according to a new class communication protocol with one or more remote communication devices during the access period. In another aspect, a device may request access to a shared medium according to a legacy protocol, and, upon grant of access, the device may communicate with or facilitate communication between one or more remote stations according to a new protocol.
摘要翻译：公开了用于有效利用与各种类型的遗留系统向后兼容的高吞吐量系统的MAC处理技术。在一个方面，根据传统的传输格式传输第一信号以保留共享介质的一部分，并且在保留部分期间发送根据第二传输格式的通信。在另一方面，通信设备可以竞争在遗留系统上进行访问，然后在访问周期期间根据新的类通信协议与一个或多个远程通信设备进行通信。在另一方面，设备可以根据传统协议请求对共享介质的访问，并且在授权访问时，设备可以根据新协议与一个或多个远程站通信或促进一个或多个远程站之间的通信。

40. 发明申请

US20120287856A1 METHOD, APPARATUS, AND SYSTEM FOR MULTIPLEXING PROTOCOL DATA UNITS 有权
标题翻译：用于多协议协议数据单元的方法，装置和系统
公开(公告)号：US20120287856A1
公开(公告)日：2012-11-15
申请号：US13555174
申请日：2012-07-22
申请人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
发明人： John W. Ketchum , Jay Rodney Walton , Sanjiv Nanda
IPC分类号： H04W40/00
CPC分类号： H04W72/1273 , H04L29/06 , H04L69/08 , H04L69/24 , H04W28/065
摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, a protocol stack is disclosed comprising one or more of the following: an adaptation layer, a data link control layer, a physical layer, and a layer manager. In another aspect, physical layer feedback is used for adaptation layer processing. In one embodiment, physical layer feedback is used for segmentation. In another embodiment, physical layer feedback is used for multicast mapping onto one or more unicast channels. In another aspect, a data unit for transmission from a first station to a second station comprises zero or more complete sub-data units, zero or one partial sub-data units from a prior transmission, and zero or one partial sub-data units to fill the data unit. In one embodiment, a pointer may be used to indicate the location of any complete sub-data units.
摘要翻译：公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。一方面，公开了一种协议栈，其包括以下一个或多个：适配层，数据链路控制层，物理层和层管理器。在另一方面，物理层反馈用于适应层处理。在一个实施例中，物理层反馈用于分割。在另一个实施例中，物理层反馈用于到一个或多个单播信道上的多播映射。在另一方面，用于从第一站到第二站的传输的数据单元包括零个或多个完整的子数据单元，来自先前传输的零个或一个部分子数据单元，以及零个或一个部分子数据单元填写数据单元。在一个实施例中，可以使用指针来指示任何完整的子数据单元的位置。

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