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    POWER CONTROL FOR A WIRELESS COMMUNICATION SYSTEM UTILIZING ORTHOGONAL MULTIPLEXING
    22.
    发明申请
    POWER CONTROL FOR A WIRELESS COMMUNICATION SYSTEM UTILIZING ORTHOGONAL MULTIPLEXING 有权
    使用正交多路复用的无线通信系统的功率控制

    公开(公告)号：US20080214121A1

    公开(公告)日：2008-09-04

    申请号：US12121405

    申请日：2008-05-15

    申请人： Arak Sutivong ,  David Jonathan Julian ,  Avneesh Agrawal

    发明人： Arak Sutivong ,  David Jonathan Julian ,  Avneesh Agrawal

    IPC分类号： H04B17/00

    CPC分类号： H04W52/247 ,  H04B17/309 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/20 ,  H04W24/00 ,  H04W52/125 ,  H04W52/146 ,  H04W52/16 ,  H04W52/20 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/243 ,  H04W52/283 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/54 ,  H04W52/60 ,  H04W88/08

    摘要： Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. The amount of inter-sector interference that a terminal may cause may be roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmit power level. The transmit power may be decreased if high interference is observed by a neighbor base station and increased otherwise. The transmit power may be adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmit power level is higher, and vice versa. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs.

    摘要翻译： 描述了用于调整发射功率以减轻对服务基站的扇区内干扰和对邻近基站的扇区间干扰的技术。 终端可能引起的扇区间干扰的量可以基于每个相邻基站观测到的总干扰，服务和相邻基站的信道增益以及当前发射功率电平来大致估计。 如果邻近基站观测到高干扰，否则发射功率可能会降低。 如果终端位于更靠近观测到高干扰的邻近基站和/或当前发射功率电平较高时，发射功率可以更大量地和/或更频繁地进行调整，反之亦然。 通过将终端的接收的SNR限制在可允许的SNR的范围内，将扇区内的干扰维持在可接受的水平内。

    Multiple modulation technique for use in a communication system
    24.
    发明申请
    Multiple modulation technique for use in a communication system 有权
    用于通信系统的多调制技术

    公开(公告)号：US20060133455A1

    公开(公告)日：2006-06-22

    申请号：US11315743

    申请日：2005-12-21

    申请人： Avneesh Agrawal ,  Aamod Khandekar ,  Arak Sutivong ,  Alexei Gorokhov

    发明人： Avneesh Agrawal ,  Aamod Khandekar ,  Arak Sutivong ,  Alexei Gorokhov

    IPC分类号： H04B1/707 ,  H04K1/10

    CPC分类号： H04L27/0008 ,  H04L27/2627 ,  H04L27/2649

    摘要： A method for receiving an indication to apply a first modulation scheme to modulate one or more segments of the first portion; determining a first segment set, having at least one segment of the first portion for applying said first modulation scheme; modulating said first segment set of the first portion using said first modulation scheme; and modulating one or more segments of the second portion using a second scheme, different from first modulation scheme.

    摘要翻译： 一种用于接收用于应用第一调制方案以调制所述第一部分的一个或多个段的指示的方法; 确定具有用于施加所述第一调制方案的所述第一部分的至少一个段的第一段集合; 使用所述第一调制方案调制所述第一部分的所述第一段集合; 以及使用与第一调制方案不同的第二方案来调制第二部分的一个或多个段。

    SDMA for WCDMA
    27.
    发明授权
    SDMA for WCDMA 有权
    SDMA用于WCDMA

    公开(公告)号：US08064424B2

    公开(公告)日：2011-11-22

    申请号：US11213463

    申请日：2005-08-26

    申请人： Sharad Deepak Sambhwani ,  Dhananjay Ashok Gore ,  Avneesh Agrawal ,  Arak Sutivong ,  Alexei Gorokhov

    发明人： Sharad Deepak Sambhwani ,  Dhananjay Ashok Gore ,  Avneesh Agrawal ,  Arak Sutivong ,  Alexei Gorokhov

    IPC分类号： H04B7/216

    CPC分类号： H04J13/0048 ,  H04J13/18

    摘要： Systems and methodologies are described that facilitate increasing system capacity in a code-limited WCDMA (e.g., TDD, FDD, . . . ) wireless communication environment. According to one aspect, a larger code space can be defined by introducing multiple code clusters within a sector, wherein each cluster has a unique scrambling code. Codes within a cluster can have orthogonal Walsh sequences that can be assigned to user devices to facilitate communicating over a wireless network and can overlap with codes in another cluster. The unique scrambling code assigned to each cluster can ensure that duplicate Walsh sequences in another cluster in the same sector appear as a pseudo-noise codes.

    摘要翻译： 描述了在有限的WCDMA（例如，TDD，FDD，...）无线通信环境中增加系统容量的系统和方法。 根据一个方面，可以通过在扇区内引入多个码集来定义更大的码空间，其中每个群集具有唯一的扰码。 群集内的代码可以具有可被分配给用户设备的正交沃尔什序列，以便于通过无线网络进行通信并且可以与另一个群集中的代码重叠。 分配给每个簇的唯一扰码可以确保同一扇区中另一个簇中的重复沃尔什序列显示为伪噪声码。

    Robust erasure detection and erasure-rate-based closed loop power control
    28.
    发明授权
    Robust erasure detection and erasure-rate-based closed loop power control 有权
    强大的擦除检测和基于擦除率的闭环功率控制

    公开(公告)号：US07197692B2

    公开(公告)日：2007-03-27

    申请号：US10890717

    申请日：2004-07-13

    申请人： Arak Sutivong ,  Avneesh Agrawal ,  David Jonathan Julian

    发明人： Arak Sutivong ,  Avneesh Agrawal ,  David Jonathan Julian

    IPC分类号： H03M13/03

    CPC分类号： H04L1/0045 ,  H04L1/0057 ,  H04L1/20 ,  H04W52/125 ,  H04W52/20

    摘要： Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the erasure threshold based on received known codewords to achieve a target level of performance. For power control, an inner loop adjusts the transmit power to maintain a received signal quality (SNR) at a target SNR. An outer loop adjusts the target SNR based on the status of received codewords (erased or non-erased) to achieve a target erasure rate. A third loop adjusts the erasure threshold based on the status of received known codewords (“good”, “bad”, or erased) to achieve a target conditional error rate.

    摘要翻译： 描述了用于对没有错误检测编码的传输进行擦除检测和功率控制的技术。 为了擦除检测，发射机经由无线信道发送码字。 接收机计算每个接收到的码字的度量，将所计算的度量与擦除阈值进行比较，并将接收的码字声明为“擦除”或“未擦除”。 接收机基于接收到的已知码字来动态地调整擦除阈值，以实现目标性能水平。 对于功率控制，内部环路调整发射功率以将接收信号质量（SNR）保持在目标SNR。 外部环路基于接收到的码字（擦除或未擦除）的状态来调整目标SNR以实现目标擦除率。 第三循环基于接收的已知码字的状态（“好”，“坏”或被擦除）来调整擦除阈值，以实现目标条件错误率。

    Method, apparatus, and system for user-multiplexing in multiple access systems with retransmission
    29.
    发明授权
    Method, apparatus, and system for user-multiplexing in multiple access systems with retransmission 有权
    用于在具有重传的多个接入系统中进行用户复用的方法，装置和系统

    公开(公告)号：US07181666B2

    公开(公告)日：2007-02-20

    申请号：US10426546

    申请日：2003-04-29

    申请人： Matt Grob ,  Avneesh Agrawal ,  Arak Sutivong

    发明人： Matt Grob ,  Avneesh Agrawal ,  Arak Sutivong

    IPC分类号： G08C25/02 ,  G08C25/04

    CPC分类号： H04B7/2656 ,  H04L1/1887 ,  H04L2001/0096

    摘要： According to one aspect of the invention, a method is provided in which a group of users in a system that employs a retransmission mechanism such as Automatic Repeat Request (ARQ) is divided into multiple sub-groups of users. Each user is assigned a number of channels for transmission of information. The number of channels assigned to each user is determined based, at least in part, on the number of the sub-groups and a number of channels available in the system. Transmission intervals are alternated among the multiple sub-groups such that only one of the sub-groups of users is allowed to transmit information during any transmission interval. An idle interval during which a particular user in the first group does not transmit information is used as a waiting period for acknowledgement of a previous transmission by the particular user.

    摘要翻译： 根据本发明的一个方面，提供一种方法，其中使用诸如自动重传请求（ARQ）的重传机制的系统中的一组用户被划分为多个用户子组。 为每个用户分配了多个信道用于传输信息。 至少部分地基于子系统的数量和系统中可用的通道的数量来确定分配给每个用户的频道数量。 在多个子组之间交替发送间隔，使得只有一个用户子组被允许在任何发送间隔期间发送信息。 第一组中的特定用户不发送信息的空闲间隔被用作特定用户对先前发送的确认的等待时段。

    Robust erasure detection and erasure-rate-based closed loop power control
    30.
    发明申请
    Robust erasure detection and erasure-rate-based closed loop power control 有权
    强大的擦除检测和基于擦除率的闭环功率控制

    公开(公告)号：US20050283715A1

    公开(公告)日：2005-12-22

    申请号：US10890717

    申请日：2004-07-13

    申请人： Arak Sutivong ,  Avneesh Agrawal ,  David Julian

    发明人： Arak Sutivong ,  Avneesh Agrawal ,  David Julian

    IPC分类号： H04B7/005 ,  H04L1/00 ,  H04L1/20 ,  H03M13/03

    CPC分类号： H04L1/0045 ,  H04L1/0057 ,  H04L1/20 ,  H04W52/125 ,  H04W52/20

    摘要： Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the erasure threshold based on received known codewords to achieve a target level of performance. For power control, an inner loop adjusts the transmit power to maintain a received signal quality (SNR) at a target SNR. An outer loop adjusts the target SNR based on the status of received codewords (erased or non-erased) to achieve a target erasure rate. A third loop adjusts the erasure threshold based on the status of received known codewords (“good”, “bad”, or erased) to achieve a target conditional error rate.

    摘要翻译： 描述了用于对没有错误检测编码的传输进行擦除检测和功率控制的技术。 为了擦除检测，发射机经由无线信道发送码字。 接收机计算每个接收到的码字的度量，将所计算的度量与擦除阈值进行比较，并且将所接收的码字声明为“擦除”或“未擦除”。 接收机基于接收到的已知码字来动态地调整擦除阈值，以实现目标性能水平。 对于功率控制，内部环路调整发射功率以将接收信号质量（SNR）保持在目标SNR。 外部环路基于接收到的码字（擦除或未擦除）的状态来调整目标SNR以实现目标擦除率。 第三循环基于接收的已知码字的状态（“好”，“坏”或被擦除）来调整擦除阈值，以实现目标条件错误率。