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    Method and an apparatus for a quick retransmission of signals in a communication system
    2.
    发明申请
    Method and an apparatus for a quick retransmission of signals in a communication system 有权
    用于在通信系统中快速重传信号的方法和装置

    公开(公告)号：US20070168825A1

    公开(公告)日：2007-07-19

    申请号：US11518329

    申请日：2006-09-07

    申请人： Ahmad Jalali ,  Eduardo Esteves ,  Nagabhushana Sindhushayana ,  Peter Black ,  Rashid Attar

    发明人： Ahmad Jalali ,  Eduardo Esteves ,  Nagabhushana Sindhushayana ,  Peter Black ,  Rashid Attar

    IPC分类号： H04L1/18 ,  G08C25/02

    CPC分类号： H04L1/1887 ,  H04L1/1692 ,  H04L1/1809 ,  H04L1/1848 ,  H04L1/1877 ,  H04L1/188

    摘要： A method and an apparatus for quick retransmission of signals in a communication system are disclosed. A transmitting terminal, e.g., a base station, transmits signals in a form of packets to a receiving terminal, e.g., a subscriber station. The receiving terminal determines if the packet was intended for the receiving terminal, and if so, the receiving terminal demodulates the packet. The receiving terminal then computes a quality metric of the packet, and compares the computed quality metric with a quality metric contained in the packet. If the quality metrics match, the packet is declared correctly received, and is forwarded for further processing. If the quality metrics fail to match, the receiving terminal sends a request for retransmission of the packet. The transmitting terminal determines which packet needs to be retransmitted based on the request for retransmission. The transmitting terminal then schedules the packet for retransmission.

    摘要翻译： 公开了一种在通信系统中快速重发信号的方法和装置。 发送终端（例如基站）以分组的形式向接收终端（例如，用户台）发送信号。 接收终端确定分组是否用于接收终端，如果是，则接收终端解调分组。 接收终端然后计算分组的质量度量，并将计算的质量度量与分组中包含的质量度量进行比较。 如果质量度量匹配，则报文被正确地接收，并被转发用于进一步的处理。 如果质量度量不匹配，则接收终端发送分组请求。 发送终端根据重传请求确定哪个分组需要重传。 然后，发送终端调度分组进行重传。

    METHOD AND APPARATUS FOR DETERMINING POWER REQUIRED FOR DATA TRANSMISSION IN COMMUNICATION SYSTEMS
    6.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING POWER REQUIRED FOR DATA TRANSMISSION IN COMMUNICATION SYSTEMS 有权
    用于确定通信系统中数据传输所需功率的方法和装置

    公开(公告)号：US20070121758A1

    公开(公告)日：2007-05-31

    申请号：US11627303

    申请日：2007-01-25

    申请人： Nagabhushana Sindhushayana ,  Peter Black ,  Rashid Attar

    发明人： Nagabhushana Sindhushayana ,  Peter Black ,  Rashid Attar

    IPC分类号： H04L25/49 ,  H04B1/00

    CPC分类号： H04W52/26 ,  H04L1/0002 ,  H04L1/0021 ,  H04W52/223 ,  H04W52/24 ,  H04W52/265 ,  H04W52/267 ,  H04W52/34 ,  H04W52/367

    摘要： Methods and apparatus for estimating a transmission power required for data transmission in a communication system are disclosed. A terminal determines a quality metric of a communication link, over which data are to be transmitted, and modifies the determined quality metric by a quality metric margin. The terminal then estimates the maximum rate of data in accordance with the modified quality metric. Alternatively, the terminal estimates transmission power required for data transmission with a data rate in accordance with the modified quality metric. The quality metric margin may be a pre-determined or dynamically adjusted. The terminal dynamically adjusts the quality metric margin in accordance with a result of comparison of a transmit power corresponding to the estimated maximum rate of data with an actual transmit power used to transmit the data.

    摘要翻译： 公开了用于估计通信系统中的数据传输所需的发送功率的方法和装置。 终端确定要发送数据的通信链路的质量度量，并通过质量度量边界修改所确定的质量度量。 终端然后根据修改的质量度量来估计最大数据速率。 或者，终端根据修改的质量度量来估计数据传输所需的传输功率。 质量度量余量可以是预先确定的或动态调整的。 终端根据与估计的最大数据速率相对应的发射功率与用于发送数据的实际发射功率的比较结果动态地调整质量度量余量。

    PILOT REFERENCE TRANSMISSION FOR A WIRELESS COMMUNICATION SYSTEM
    10.
    发明申请
    PILOT REFERENCE TRANSMISSION FOR A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统的引导参考传输

    公开(公告)号：US20080008136A1

    公开(公告)日：2008-01-10

    申请号：US11858840

    申请日：2007-09-20

    申请人： Roberto Padovani ,  Peter Black ,  Nagabhushana Sindhushayana

    发明人： Roberto Padovani ,  Peter Black ,  Nagabhushana Sindhushayana

    IPC分类号： H04J3/00

    CPC分类号： H04B7/2687 ,  H04B1/707 ,  H04B2201/70701 ,  H04J3/0644 ,  H04W52/325

    摘要： A pilot reference transmission scheme well suited for high data rate wireless communication systems is disclosed. To maximize the amount of interference from transmissions from neighboring transmission sources (e.g., access points or base stations) during the pilot interval, and hence minimize the amount of interference from non-transmitting sources during the data intervals, the pilot references are transmitted in bursts at predetermined time intervals, and the pilot bursts from the access points are synchronized. This results in maximum interference contributions from non-transmitting neighboring access points, facilitating reliable estimation of worst case carrier-to-interference (C/I), and further allows the receiving devices (e.g., access terminals) to easily recognize the bursts as pilot reference. In one embodiment, each access point transmits the pilot bursts at or near its maximum transmit power level and no user-specific data is transmitted during the pilot bursts.

    摘要翻译： 公开了一种非常适合高数据速率无线通信系统的导频参考传输方案。 为了在导频间隔期间使来自相邻传输源（例如，接入点或基站）的传输的干扰量最大化，并且因此在数据间隔期间最小化来自非发射源的干扰量，导频参考以突发 并且来自接入点的导频突发是同步的。 这导致来自非发射相邻接入点的最大干扰贡献，促进对最差情况下的载波干扰（C / I）的可靠估计，并且还允许接收设备（例如，接入终端）容易地将突发识别为导频 参考。 在一个实施例中，每个接入点在其最大发射功率电平处或其附近发射导频脉冲串，并且在导频突发期间不发送用户特定数据。