知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

49 条记录 (耗时 0.029 秒)

    Low latency frequency switching
    1.
    发明授权
    Low latency frequency switching 有权
    低延迟频率切换

    公开(公告)号：US08565121B2

    公开(公告)日：2013-10-22

    申请号：US11924578

    申请日：2007-10-25

    申请人： Da-shan Shiu ,  Li Zhang ,  Eugene Sy ,  David Malonado ,  Upkar Dhaliwal

    发明人： Da-shan Shiu ,  Li Zhang ,  Eugene Sy ,  David Malonado ,  Upkar Dhaliwal

    IPC分类号： H04J3/06

    CPC分类号： H03G3/3036

    摘要： Techniques for improved low latency frequency switching are disclosed. In one embodiment, a controller receives a frequency switch command and generates a frequency switch signal at a time determined in accordance with a system timer. In another embodiment, gain calibration is initiated subsequent to the frequency switch signal delayed by the expected frequency synthesizer settling time. In yet another embodiment, DC cancellation control and gain control are iterated to perform gain calibration, with signaling to control the iterations without need for processor intervention. Various other embodiments are also presented. Aspects of the embodiments disclosed may yield the benefit of reducing latency during frequency switching, allowing for increased measurements at alternate frequencies, reduced time spent on alternate frequencies, and the capacity and throughput improvements that follow from minimization of disruption of an active communication session and improved neighbor selection.

    摘要翻译： 公开了用于改进的低延迟频率切换的技术。 在一个实施例中，控制器接收频率切换命令，并在根据系统定时器确定的时间产生频率切换信号。 在另一个实施例中，在频率切换信号延迟预期频率合成器建立时间之后启动增益校准。 在另一个实施例中，迭代DC取消控制和增益控制以执行增益校准，具有控制迭代的信令，而不需要处理器干预。 还提出了各种其它实施例。 所公开的实施例的方面可以产生在频率切换期间减少等待时间的优点，允许在替代频率下的增加的测量，减少在替代频率上花费的时间，以及从最小化主动通信会话的中断并改进的容量和吞吐量改进 邻居选择。

    Power control avoiding outer loop wind-up
    2.
    发明授权
    Power control avoiding outer loop wind-up 有权
    电源控制避免外圈卷绕

    公开(公告)号：US07966032B2

    公开(公告)日：2011-06-21

    申请号：US11264950

    申请日：2005-11-01

    申请人： Richard Chi ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

    发明人： Richard Chi ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

    IPC分类号： H04Q7/20

    CPC分类号： H04W52/228 ,  H04W52/12 ,  H04W52/20 ,  H04W52/221 ,  H04W52/24 ,  H04W52/241 ,  H04W52/248 ,  H04W52/36

    摘要： Techniques for power control that avoids outer loop wind-up are disclosed. In one aspect, wind-up of a target power level is detected, and the target power level is modified in response. In another aspect, unwinding of the target power level is detected, after which the target power level is determined without considering wind-up. Various other aspects are also presented, including wind-up and unwinding detection procedures, and target power level modification procedures. These aspects have the benefit of reducing the time that transmit power exceeds that which is necessary, thus increasing system capacity and performance, and mitigating misallocation of system resources.

    摘要翻译： 公开了避免外圈卷绕的功率控制技术。 在一个方面，检测目标功率电平的上升，并且响应地改变目标功率电平。 在另一方面，检测目标功率电平的展开，之后在不考虑卷绕的情况下确定目标功率电平。 还提出了各种其他方面，包括卷绕和展开检测程序以及目标功率级别修改程序。 这些方面具有减少发射功率超过必要时间的优点，从而增加系统容量和性能，并减轻系统资源的分配不当。

    Power control avoiding outer loop wind-up
    3.
    发明授权
    Power control avoiding outer loop wind-up 有权
    电源控制避免外圈卷绕

    公开(公告)号：US07734309B2

    公开(公告)日：2010-06-08

    申请号：US11750938

    申请日：2007-05-18

    申请人： Richard Chi ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

    发明人： Richard Chi ,  Da-Shan Shiu ,  Nitin Kasturi ,  Parvathanathan Subrahmanya

    IPC分类号： H04Q7/20

    CPC分类号： H04W52/228 ,  H04W52/12 ,  H04W52/20 ,  H04W52/221 ,  H04W52/24 ,  H04W52/241 ,  H04W52/248 ,  H04W52/36

    摘要： Techniques for power control that avoids outer loop wind-up are disclosed. In one aspect, wind-up of a target power level is detected, and the target power level is modified in response. In another aspect, unwinding of the target power level is detected, after which the target power level is determined without considering wind-up. Various other aspects are also presented, including wind-up and unwinding detection procedures, and target power level modification procedures. These aspects have the benefit of reducing the time that transmit power exceeds that which is necessary, thus increasing system capacity and performance, and mitigating misallocation of system resources.

    摘要翻译： 公开了避免外圈卷绕的功率控制技术。 在一个方面，检测目标功率电平的上升，并且响应地改变目标功率电平。 在另一方面，检测目标功率电平的展开，之后在不考虑卷绕的情况下确定目标功率电平。 还提出了各种其他方面，包括卷绕和展开检测程序以及目标功率级别修改程序。 这些方面具有减少发射功率超过必要时间的优点，从而增加系统容量和性能，并减轻系统资源的分配不当。

    Scheduling techniques for a packet-access network
    4.
    发明授权
    Scheduling techniques for a packet-access network 有权
    分组接入网络的调度技术

    公开(公告)号：US07653028B2

    公开(公告)日：2010-01-26

    申请号：US10264434

    申请日：2002-10-03

    申请人： Da-shan Shiu ,  Durga P. Malladi

    发明人： Da-shan Shiu ,  Durga P. Malladi

    IPC分类号： H04B7/216 ,  H04W72/00

    CPC分类号： H04B1/7103

    摘要： Multiple access interference may be substantially removed by introducing a near-far situation in which a near mobile and a far mobile (“near” and “far” based on signal strength) are selected, resources allocated among these and other mobiles, and the data is packetized for transmission during a transmission interval such that the data intended for the far mobile is transmitted along with the data intended for the near mobile. Forward link signals are then appropriately scheduled. Signals intended for the far mobile and the near mobile are decoded from the composite signal received at the near mobile. The signal intended for the far mobile is then removed from the composite signal received at the near mobile.

    摘要翻译： 可以通过引入近距离的情况（其中基于信号强度“接近”和“远”，基于信号强度“近”，在这些和其他移动台之间分配的资源以及数据 被分组化以在传输间隔期间进行传输，使得用于远移动站的数据连同旨在用于近移动站的数据一起发送。 然后适当地调度前向链路信号。 用于远移动和近移动的信号从在近端移动接收的复合信号解码。 然后从远移动台接收到的复合信号中去除远移动设备的信号。

    SEGMENTED CDMA SEARCHING
    7.
    发明申请
    SEGMENTED CDMA SEARCHING 有权
    SEGMENTED CDMA搜索

    公开(公告)号：US20070298739A1

    公开(公告)日：2007-12-27

    申请号：US11746031

    申请日：2007-05-08

    申请人： Subramanya Rao ,  Da-Shan Shiu ,  Jeremy Lin ,  Jeong Kim

    发明人： Subramanya Rao ,  Da-Shan Shiu ,  Jeremy Lin ,  Jeong Kim

    IPC分类号： H04B1/18

    CPC分类号： H04B1/7077 ,  H04B1/70753 ,  H04B2201/70707

    摘要： Techniques for segmented CDMA searching are disclosed. In one aspect, a searcher comprises a plurality of storage elements selectable for performing a plurality of segmentable search tasks, each storage element operable for storage of and access to state information for one of the plurality of search tasks. In another aspect, a first search task is interrupted in progress, the state information for the first task is stored, a second search task is performed, and the first search task is continued using the stored state information. In yet another aspect, a search task is segmented into smaller search segments, sized to fit within contiguous available time in the searcher. Various other aspects of the invention are also presented. These aspects have the benefit of circuit area and search-time efficiency which translate into reduced costs, increased standby time, increased acquisition speed, higher quality signal transmission, increased data throughput, decreased power, and improved overall system capacity.

    摘要翻译： 公开了分段CDMA搜索的技术。 在一个方面，搜索器包括可选择用于执行多个可分割搜索任务的多个存储元件，每个存储元件可操作用于存储和访问多个搜索任务之一的状态信息。 在另一方面，第一搜索任务在进行中中断，存储第一任务的状态信息，执行第二搜索任务，并且使用所存储的状态信息继续第一搜索任务。 在另一方面，搜索任务被分割成较小的搜索段，其大小适合于搜索者中的连续可用时间。 还提出了本发明的各种其它方面。 这些方面具有电路面积和搜索时间效率的优点，从而降低了成本，增加了待机时间，提高了采集速度，提高了信号传输质量，提高了数据吞吐量，降低了功耗，提高了整体系统容量。

    Low latency frequency switching
    8.
    发明授权
    Low latency frequency switching 有权
    低延迟频率切换

    公开(公告)号：US07307480B2

    公开(公告)日：2007-12-11

    申请号：US10422271

    申请日：2003-04-24

    申请人： Da-shan Shiu ,  Li Zhang ,  Eugene Sy

    发明人： Da-shan Shiu ,  Li Zhang ,  Eugene Sy

    IPC分类号： G01R23/00 ,  H04Q7/34

    CPC分类号： H03G3/3036

    摘要： Techniques for improved low latency frequency switching are disclosed. In one embodiment, a controller receives a frequency switch command and generates a frequency switch signal at a time determined in accordance with a system timer. In another embodiment, gain calibration is initiated subsequent to the frequency switch signal delayed by the expected frequency synthesizer settling time. In yet another embodiment, DC cancellation control and gain control are iterated to perform gain calibration, with signaling to control the iterations without need for processor intervention. Various other embodiments are also presented. Aspects of the embodiments disclosed may yield the benefit of reducing latency during frequency switching, allowing for increased measurements at alternate frequencies, reduced time spent on alternate frequencies, and the capacity and throughput improvements that follow from minimization of disruption of an active communication session and improved neighbor selection.

    摘要翻译： 公开了用于改进的低延迟频率切换的技术。 在一个实施例中，控制器接收频率切换命令，并在根据系统定时器确定的时间产生频率切换信号。 在另一个实施例中，在频率切换信号延迟预期频率合成器建立时间之后启动增益校准。 在另一个实施例中，迭代DC取消控制和增益控制以执行增益校准，具有控制迭代的信令，而不需要处理器干预。 还提出了各种其它实施例。 所公开的实施例的方面可以产生在频率切换期间减少等待时间的优点，允许在替代频率下的增加的测量，减少在替代频率上花费的时间，以及从最小化主动通信会话的中断并改进的容量和吞吐量改进 邻居选择。

    Adaptive pilot filter for a wireless communication system
    9.
    发明授权
    Adaptive pilot filter for a wireless communication system 有权
    用于无线通信系统的自适应导频滤波器

    公开(公告)号：US07230975B2

    公开(公告)日：2007-06-12

    申请号：US09924199

    申请日：2001-08-07

    申请人： Parvathanathan Subrahmanya ,  Da-shan Shiu ,  Avneesh Agrawal

    发明人： Parvathanathan Subrahmanya ,  Da-shan Shiu ,  Avneesh Agrawal

    IPC分类号： H04B1/00 ,  H04B1/10

    CPC分类号： H04L25/0228 ,  H04B1/7117 ,  H04B2201/70701 ,  H04L25/0214

    摘要： Techniques to filter pilot symbols for a pilot in an “adaptive” manner to provide an improved estimate of the response of a communication channel. A received signal may experience different channel conditions at different times, and different multipaths may also experience different channel conditions even when received close in time. A pilot filter with an adaptive response is used to provide an improved estimate of the channel response. Various adaptive pilot filtering schemes may be used. In a first scheme, the channel conditions are estimated based on the quality of the received pilot. In a second scheme, the channel conditions are estimated based on the quality of the pilot estimates (i.e., the filtered pilot symbols). For each scheme, a particular filter response is selected based on the estimated quality of either the received pilot or the pilot estimates.

    摘要翻译： 用于以“自适应”方式滤波导频的导频符号以提供对通信信道的响应的改进估计的技术。 接收到的信号可能在不同时间经历不同的信道条件，即使在接收时间短的情况下，不同的多路径也可能经历不同的信道条件。 使用具有自适应响应的导频滤波器来提供信道响应的改进的估计。 可以使用各种自适应导频滤波方案。 在第一方案中，基于接收到的导频的质量来估计信道条件。 在第二方案中，基于导频估计的质量（即，滤波的导频符号）来估计信道条件。 对于每个方案，基于所接收的导频或导频估计的估计质量来选择特定的滤波器响应。

    Power control for a channel with multiple formats in a communication system
    10.
    发明申请
    Power control for a channel with multiple formats in a communication system 有权
    在通信系统中具有多种格式的通道的功率控制

    公开(公告)号：US20060040698A1

    公开(公告)日：2006-02-23

    申请号：US11249786

    申请日：2005-10-12

    申请人： Da-shan Shiu ,  Serge Willenegger ,  Richard Chi ,  Parvathanathan Subrahmanya ,  Chih-Ping Hsu

    发明人： Da-shan Shiu ,  Serge Willenegger ,  Richard Chi ,  Parvathanathan Subrahmanya ,  Chih-Ping Hsu

    IPC分类号： H04B7/00

    CPC分类号： H04W52/12 ,  H04W52/20 ,  H04W52/267 ,  H04W52/283 ,  H04W52/286 ,  H04W52/44

    摘要： Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified- for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.

    摘要翻译： 用于更有效地控制使用多种格式（例如，速率，传输格式）的数据传输的发射功率的技术。 给定数据信道（例如，传输信道）的不同格式可能需要不同的目标SNIR来实现特定的BLER。 在一个方面，可以针对每个数据信道的每个格式指定单个目标BLER。 在另一方面，提供各种功率控制方案以实现用于不同格式的不同目标SNIR。 在第一功率控制方案中，为多种格式维护多个单独的外环。 对于每个格式，其关联的外部循环尝试设置目标SNIR，使得为该格式指定的目标BLER被实现。 在第二功率控制方案中，保持多个单独的外环，并且基站进一步对不同格式的发射功率电平进行不同的调整。