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78 条记录 (耗时 0.022 秒)

    Method for transmission of unicast control in broadcast/multicast transmission time intervals
    36.
    发明授权
    Method for transmission of unicast control in broadcast/multicast transmission time intervals 有权
    在广播/组播传输时间间隔内传输单播控制的方法

    公开(公告)号：US08175021B2

    公开(公告)日：2012-05-08

    申请号：US11554959

    申请日：2006-10-31

    申请人： Aris Papasakellariou ,  Timothy M Schmidl ,  Eko N. Onggosanusi ,  Anand Dabak

    发明人： Aris Papasakellariou ,  Timothy M Schmidl ,  Eko N. Onggosanusi ,  Anand Dabak

    IPC分类号： H04H20/71

    CPC分类号： H04W72/1289 ,  G06Q20/10 ,  G06Q30/00 ,  G06Q40/00 ,  H04L5/0048 ,  H04L5/0053 ,  H04L12/18 ,  H04L27/2601 ,  H04L27/2602 ,  H04N21/437 ,  H04N21/44209 ,  H04W52/322 ,  H04W72/005 ,  H04W72/1205 ,  H04W72/14

    摘要： Embodiments of the invention provide methods for maximizing the bandwidth utilization in the uplink of a communication system supporting time division multiplexing between unicast and multicast/broadcast communication modes during transmission time intervals in the downlink of a communication system. This is accomplished by multiplexing at least unicast control signaling for UL scheduling assignments in TTIs supporting the multicast/broadcast communication mode. Moreover, multiplexing of unicast control signaling can also be accomplished by splitting a symbol of the multicast/broadcast TTI into two shorter symbols with the first of these two shorter symbols carrying at least unicast control signaling and the second of these shorter symbols carrying multicast/broadcast signaling.

    摘要翻译： 本发明的实施例提供了一种用于在通信系统的下行链路中的传输时间间隔期间最大化在单播和多播/广播通信模式之间支持时分复用的通信系统的上行链路中的带宽利用率的方法。 这通过在支持多播/广播通信模式的TTI中多路复用至少用于UL调度分配的单播控制信令来实现。 此外，单播控制信令的多路复用也可以通过将多播/广播TTI的符号分成两个较短的符号来实现，其中这两个较短的符号中的第一个携带至少单播控制信令，并且这些较短的符号中的第二个携带组播/广播 信令。

    Receiving a Pilot Design and Channel Estimation
    37.
    发明申请
    Receiving a Pilot Design and Channel Estimation 有权
    接收导频设计和信道估计

    公开(公告)号：US20100124297A1

    公开(公告)日：2010-05-20

    申请号：US12639422

    申请日：2009-12-16

    申请人： Aris Papasakellariou ,  Timothy M. Schmidl ,  Eko N. Onggosanusi ,  Anand Dabak

    发明人： Aris Papasakellariou ,  Timothy M. Schmidl ,  Eko N. Onggosanusi ,  Anand Dabak

    IPC分类号： H04L27/28 ,  H04L27/00

    CPC分类号： H04L1/06 ,  H04B7/0452 ,  H04B7/12 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0226

    摘要： Embodiments of the invention provide a receiver in an OFDM based communication system adapted to perform channel estimation using a received reference signal transmitted from at least one antenna, said reference signal being substantially located into two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A method of generating pilot structure, the pilot structure provides information to an apparatus for channel estimation in the OFDM system with a transmission time interval of seven OFDM symbols. The pilot structure comprising pilot signals from at least one transmitting antenna located in various OFDM symbols of the transmission time interval.

    摘要翻译： 本发明的实施例提供了一种基于OFDM的通信系统中的接收机，其适于使用从至少一个天线发送的接收到的参考信号来执行信道估计，所述参考信号基本上位于包含两个以上的传输时间间隔的两个OFDM符号中 OFDM符号。 一种生成导频结构的方法，导频结构向具有7个OFDM符号的传输时间间隔的OFDM系统中的信道估计装置提供信息。 所述导频结构包括来自位于所述传输时间间隔的各种OFDM符号中的至少一个发射天线的导频信号。

    Channel length estimation and accurate FFT window placement for high-mobility OFDM receivers in single frequency networks
    38.
    发明申请
    Channel length estimation and accurate FFT window placement for high-mobility OFDM receivers in single frequency networks 有权
    信道长度估计和单频网络中高移动性OFDM接收机的精确FFT窗口布局

    公开(公告)号：US20060222099A1

    公开(公告)日：2006-10-05

    申请号：US11389354

    申请日：2006-03-23

    申请人： Badri Varadarajan ,  Anand Dabak ,  Charles Sestok ,  Srinath Hosur

    发明人： Badri Varadarajan ,  Anand Dabak ,  Charles Sestok ,  Srinath Hosur

    IPC分类号： H04L27/06 ,  H04K1/10

    CPC分类号： H04L25/0216 ,  H04L27/2662 ,  H04L2025/03414

    摘要： A method of estimating a channel length (304) in a wireless receiver is disclosed. The receiver receives a signal (122) from a remote transmitter. The receiver selects a plurality (K) of different candidate channel lengths and determines a respective criterion value (402) of the signal for each of the plurality of different candidate channel lengths. The receiver selects a channel length (410) from the plurality of different candidate channel lengths in response to the respective criterion value (404).

    摘要翻译： 公开了一种在无线接收机中估计信道长度（304）的方法。 接收机从远程发射机接收信号（122）。 接收机选择不同候选信道长度的多个（K），并且为多个不同候选信道长度中的每一个确定信号的相应标准值（402）。 接收机响应于各自的标准值（404）从多个不同候选信道长度中选择一个信道长度（410）。

    Ranging in multi-band OFDM communications systems
    40.
    发明申请
    Ranging in multi-band OFDM communications systems 审中-公开
    在多频带OFDM通信系统中进行测距

    公开(公告)号：US20050050130A1

    公开(公告)日：2005-03-03

    申请号：US10932894

    申请日：2004-09-02

    申请人： Anand Dabak ,  Anuj Batra ,  Jaiganesh Balakrishnan

    发明人： Anand Dabak ,  Anuj Batra ,  Jaiganesh Balakrishnan

    IPC分类号： G06F17/15 ,  H04J1/16 ,  H04J3/06 ,  H04L7/04 ,  H04L27/26

    CPC分类号： H04J1/16 ,  H04J3/0682 ,  H04L7/041 ,  H04L27/2601

    摘要： System and method for determining a separation between communicating devices. A preferred embodiment comprises a first device transmitting a signal over multiple subbands to a second device, the second device determining a timing for the signal by processing the signal in each subband separately. The second device then transmits a signal back to the first device along with timing information (again, over multiple subbands). The first device then determines a timing for the signal and by determining a difference in the timing information provided by the second device and timing information it determines, the first device can compute the separation between it and the second device. The use of multiple subbands can dedicate more bandwidth to the transmission of the signal, permitting greater resolution.

    摘要翻译： 用于确定通信设备之间的间隔的系统和方法。 优选实施例包括将多个子带上的信号发送到第二设备的第一设备，第二设备通过分别处理每个子带中的信号来确定信号的定时。 然后，第二设备连同定时信息（再次，通过多个子带）一起发送回到第一设备的信号。 然后，第一设备确定信号的定时，并且通过确定由第二设备提供的定时信息和它确定的定时信息的差异，第一设备可以计算它与第二设备之间的间隔。 使用多个子带可以将更多的带宽专用于信号的传输，从而允许更高的分辨率。