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315 条记录 (耗时 0.028 秒)

    Method of providing a gap indication during a sticky assignment
    1.
    发明申请
    Method of providing a gap indication during a sticky assignment 有权

    公开(公告)号：US20060034173A1

    公开(公告)日：2006-02-16

    申请号：US11022144

    申请日：2004-12-22

    申请人： Edward Teague ,  Aamod Khandekar ,  Dhananjay Gore

    发明人： Edward Teague ,  Aamod Khandekar ,  Dhananjay Gore

    IPC分类号： H04J1/16 ,  H04J3/14

    CPC分类号： H04W76/25 ,  H04W72/04

    摘要： A method and apparatus are provided to manage the assignment transmission resource of forward and reserve link that is assigned to transmitting entity for a period of time. An indication of a gap is provided whenever the transmitting entity is not transmitting actual data packets (e.g. whole or part of intended data or content), yet the transmitting entity is to maintain the assignment of the allocated resource. For example, an erasure signature packet comprising a first data pattern is transmitted on the assigned resource when there is no actual data to transmit on the assigned resource.

    Shared signaling channel
    3.
    发明申请
    Shared signaling channel 有权
    共享信令通道

    公开(公告)号：US20070097853A1

    公开(公告)日：2007-05-03

    申请号：US11261158

    申请日：2005-10-27

    申请人： Aamod Khandekar ,  Alexei Gorokhov ,  Dhananjay Gore ,  Edward Teague ,  Min Dong

    发明人： Aamod Khandekar ,  Alexei Gorokhov ,  Dhananjay Gore ,  Edward Teague ,  Min Dong

    IPC分类号： H04J11/00 ,  H04B7/216 ,  H04B7/00

    CPC分类号： H04L5/0044 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053

    摘要： A shared signaling channel can be used in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system to provide signaling, acknowledgement, and power control messages to access terminals within the system. The shared signaling channel can be assigned to a predetermined number of sub-carriers within any frame. The assignment of a predetermined number of sub-carriers to the shared signaling channel establishes a fixed bandwidth overhead for the channel. The actual sub-carriers assigned to the channel can be varied periodically, and can vary according to a predetermined frequency hopping schedule. The amount of signal power allocated to the signaling channel can vary on a per symbol basis depending on the power requirements of the communication link. The shared signaling channel can direct each message carried on the channel to one or more access terminals. Unicast messages allow the channel power to be controlled per the needs of individual communication links.

    摘要翻译： 可以在正交频分多址（OFDMA）通信系统中使用共享信令信道，以向系统内的接入终端提供信令，确认和功率控制消息。 共享信令信道可以被分配给任何帧内的预定数量的子载波。 将预定数量的子载波分配给共享信令信道为信道建立固定的带宽开销。 分配给信道的实际子载波可以周期性地变化，并且可以根据预定的跳频调度而变化。 分配给信令信道的信号功率的量可以根据通信链路的功率要求在每个符号的基础上变化。 共享信令信道可以将信道上承载的每个消息引导到一个或多个接入终端。 单播消息允许根据各个通信链路的需要来控制信道功率。

    Unified pulse shaping for multi-carrier and single-carrier waveforms
    8.
    发明申请
    Unified pulse shaping for multi-carrier and single-carrier waveforms 有权

    公开(公告)号：US20060039273A1

    公开(公告)日：2006-02-23

    申请号：US11022537

    申请日：2004-12-22

    申请人： Dhananjay Gore ,  Avneesh Agrawal ,  Aamod Khandekar

    发明人： Dhananjay Gore ,  Avneesh Agrawal ,  Aamod Khandekar

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0044 ,  H04L25/03834 ,  H04L27/0008 ,  H04L27/2607 ,  H04L27/2626 ,  H04L27/2647

    摘要： To transmit a multi-carrier signal, a transmitter provides zero symbols for guard subbands, performs OFDM modulation, and filters the resultant time-domain samples with a pulse shaping filter. To transmit a single-carrier signal, the transmitter partitions the single-carrier signal into segments. Each segment contains up to K samples and is padded, if needed, to the length of an OFDM symbol. Each padded segment is transformed from the time domain to the frequency domain to generate a corresponding frequency-domain segment with K symbols. For each frequency-domain segment, the symbols corresponding to the guard subbands are set to zero. Each frequency-domain segment is then transformed from the frequency domain to the time domain to generate a corresponding time-domain segment. A cyclic prefix may or may not be appended to each time-domain segment. Each time-domain segment is filtered with the same pulse shaping filter to generate an output waveform for the single-carrier signal.

    Incremental pilot insertion for channnel and interference estimation
    9.
    发明申请
    Incremental pilot insertion for channnel and interference estimation 有权
    增量导频插入用于信道和干扰估计

    公开(公告)号：US20060013338A1

    公开(公告)日：2006-01-19

    申请号：US11128976

    申请日：2005-05-13

    申请人： Dhananjay Gore ,  Avneesh Agrawal ,  Aamod Khandekar

    发明人： Dhananjay Gore ,  Avneesh Agrawal ,  Aamod Khandekar

    IPC分类号： H04L27/16

    CPC分类号： H04L25/0226 ,  H04L5/0007 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/006

    摘要： Dynamic resource allocation systems, apparatus, and methods are disclosed for selectively improving the ability of a receiver to determine a channel estimate in an Orthogonal Frequency Division Multiple Access (OFDMA) system. A wireless communication system can use a common pilot channel configuration to aid channel estimation in one or more receivers in communication with the system. A receiver in communication with the system may be unable to demodulate received data due to an inaccurate channel estimate. The receiver can communicate to a transmitter in the system a request for additional channel estimation resources. The wireless communication system can provide additional channel estimation resources by inserting dedicated pilot channels into one or more of the frequencies allocated to symbols for the receiver. If the receiver is still unable to demodulate received data, the wireless communication system can incrementally insert additional pilot channels in the symbol associated with the receiver.

    摘要翻译： 公开了动态资源分配系统，装置和方法，用于选择性地提高接收机在正交频分多址（OFDMA）系统中确定信道估计的能力。 无线通信系统可以使用公共导频信道配置来帮助与系统通信的一个或多个接收机中的信道估计。 与系统通信的接收机可能由于不准确的信道估计而无法解调所接收的数据。 接收机可以向系统中的发射机通信另外的信道估计资源的请求。 无线通信系统可以通过将专用导频信道插入分配给接收机的符号的一个或多个频率来提供额外的信道估计资源。 如果接收机仍然不能解调所接收的数据，则无线通信系统可以递增地在与接收机相关联的符号中插入附加的导频信道。

    Varied transmission time intervals for wireless communication system
    10.
    发明申请
    Varied transmission time intervals for wireless communication system 有权
    无线通信系统的传输时间间隔

    公开(公告)号：US20070047485A1

    公开(公告)日：2007-03-01

    申请号：US11260932

    申请日：2005-10-27

    申请人： Alexei Gorokhov ,  Edward Teague ,  Aamod Khandekar

    发明人： Alexei Gorokhov ,  Edward Teague ,  Aamod Khandekar

    IPC分类号： H04Q7/00

    CPC分类号： H04W72/1231

    摘要： Embodiments describe a varied transmission time interval in wireless communication system. According to some embodiments is a method for assigning a transmission time interval. The method can include measuring a channel condition and/or a data rate of packet communicated by at least one wireless device. Based in part on the data rate and/or channel condition information, a determination can be made whether to schedule a long transmission time interval or a short transmission time interval to the packet. A long transmission time interval can be scheduled if the channel condition is poor and/or there is a low data rate. A short transmission time interval can be scheduled if the channel condition is good and/or the data rate is high or fast. The method can be repeated for multiple wireless devices. Also included is an alternative interlacing structure that supports both long transmission time intervals and short transmission time intervals.

    摘要翻译： 实施例描述了无线通信系统中的变化的传输时间间隔。 根据一些实施例是用于分配传输时间间隔的方法。 该方法可以包括测量由至少一个无线设备传送的分组的信道条件和/或数据速率。 部分地基于数据速率和/或信道条件信息，可以确定是否为分组规划长的传输时间间隔或短的传输时间间隔。 如果信道条件差和/或数据速率低，则可以调度长传输时间间隔。 如果信道条件良好和/或数据速率高或快，则可以调度短传输时间间隔。 可以为多个无线设备重复该方法。 还包括支持长传输时间间隔和短传输时间间隔的替代交错结构。