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    • 1. 发明授权
    • Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
    • 基于OFDM的多天线通信系统的发射分集和空间扩展
    • US08520498B2
    • 2013-08-27
    • US13461707
    • 2012-05-01
    • Jay Rodney WaltonJohn Wendell KetchumMark S. WallaceSteven J. HowardSanjiv Nanda
    • Jay Rodney WaltonJohn Wendell KetchumMark S. WallaceSteven J. HowardSanjiv Nanda
    • H04J11/10
    • H04B7/0615H04B7/0413H04L27/2602
    • 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.
    • 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。
    • 2. 发明授权
    • Method, apparatus, and system for multiplexing protocol data units
    • 用于复用协议数据单元的方法,装置和系统
    • US08774098B2
    • 2014-07-08
    • US13555174
    • 2012-07-22
    • John Wendell KetchumJay Rodney WaltonSanjiv Nanda
    • John Wendell KetchumJay Rodney WaltonSanjiv Nanda
    • H04L12/26
    • H04W72/1273H04L29/06H04L69/08H04L69/24H04W28/065
    • 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.
    • 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。
    • 4. 发明申请
    • TRANSMIT DIVERSITY AND SPATIAL SPREADING FOR AN OFDM-BASED MULTI-ANTENNA COMMUNICATION SYSTEM
    • 基于OFDM的多天线通信系统的发射多样性和空间扩展
    • US20120213181A1
    • 2012-08-23
    • US13461707
    • 2012-05-01
    • J. Rodney WaltonJohn W. KetchumMark S. WallaceSteven J. HowardSanjiv Nanda
    • J. Rodney WaltonJohn W. KetchumMark S. WallaceSteven J. HowardSanjiv Nanda
    • H04J11/00H04W72/04
    • H04B7/0615H04B7/0413H04L27/2602
    • 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.
    • 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向矢量,但是在每个子带的分组上使用相同的导向矢量。 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。
    • 5. 发明授权
    • Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
    • 基于OFDM的多天线通信系统的发射分集和空间扩展
    • US08169889B2
    • 2012-05-01
    • US10794918
    • 2004-03-05
    • J. Rodney WaltonJohn W. KetchumMark S. WallaceSteven J. HowardSanjiv Nanda
    • J. Rodney WaltonJohn W. KetchumMark S. WallaceSteven J. HowardSanjiv Nanda
    • H04J11/00
    • H04B7/0615H04B7/0413H04L27/2602
    • 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. The PRTS mode may be used to achieve transmit diversity or spatial spreading. 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.
    • 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。 PRTS模式可以用于实现发射分集或空间扩展。 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。