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430 条记录 (耗时 0.049 秒)

    Apparatus, system, and method for managing reverse link communication
    82.
    发明申请
    Apparatus, system, and method for managing reverse link communication 有权
    用于管理反向链路通信的装置，系统和方法

    公开(公告)号：US20050124372A1

    公开(公告)日：2005-06-09

    申请号：US10933727

    申请日：2004-09-02

    申请人： Stein Lundby ,  Avinash Jain ,  Joseph Odenwalder ,  Sandip Sarkar ,  Tao Chen ,  Yongbin Wei

    发明人： Stein Lundby ,  Avinash Jain ,  Joseph Odenwalder ,  Sandip Sarkar ,  Tao Chen ,  Yongbin Wei

    IPC分类号： H04B7/005 ,  H04B7/185 ,  H04W52/14 ,  H04W52/24 ,  H04W52/26 ,  H04W52/28 ,  H04W52/36

    CPC分类号： H04W52/265 ,  H04W52/146 ,  H04W52/245 ,  H04W52/26 ,  H04W52/288 ,  H04W52/367

    摘要： In accordance with an exemplary embodiment of the invention, an apparatus, system, and method efficiently manage reverse link resources by allowing a mobile station to select between transmitting a payload a standard power level and transmitting a smaller payload at a boosted power level. The mobile station, therefore, can autonomously select a QoS (Quality of Service) level for physical layer packets. Based on reverse link transmission information received from a base station, the mobile station derives a reverse link transmission guideline defining the power levels and associated payloads for at least a standard service and boosted service. The mobile station selects a reverse link transmission power level from a plurality of power levels including at least a standard reverse link transmission power level associated with a standard payload size and a boosted reverse link transmission power level associated with a boosted payload size where the standard payload size is greater than the boosted payload size.

    摘要翻译： 根据本发明的示例性实施例，一种装置，系统和方法通过允许移动台在提供标准功率电平的有效负载和在提升的功率电平下发送较小有效载荷之间进行选择来有效地管理反向链路资源。 因此，移动台可以自主地选择物理层分组的QoS（服务质量）级别。 基于从基站接收的反向链路传输信息，移动台导出定义用于至少标准服务和升级服务的功率电平和相关联的有效载荷的反向链路传输准则。 移动台从包括至少与标准有效载荷大小相关联的标准反向链路发射功率电平的多个功率电平和与提升的有效载荷大小相关联的提升的反向链路发射功率电平来选择反向链路发射功率电平，其中标准有效载荷 尺寸大于提升的有效载荷大小。

    Method and system for a multicast service initiation in a communication system
    83.
    发明授权
    Method and system for a multicast service initiation in a communication system 有权
    通信系统中组播服务启动的方法和系统

    公开(公告)号：US06876636B2

    公开(公告)日：2005-04-05

    申请号：US10192428

    申请日：2002-07-09

    申请人： Ragulan Sinnarajah ,  Jun Wang ,  Nikolai K. N. Leung ,  Tao Chen

    发明人： Ragulan Sinnarajah ,  Jun Wang ,  Nikolai K. N. Leung ,  Tao Chen

    IPC分类号： H04M3/42 ,  H04B7/26 ,  H04L12/28 ,  H04L12/56 ,  H04W4/06 ,  H04H1/00

    CPC分类号： H04W4/06 ,  H04W72/005

    摘要： Method and a system for multicast service notification in cellular telephone system to enable the cellular telephone systems to provide both multicast and point-to-point services are disclosed. Several embodiments describe the signaling interaction between an access network and subscriber stations belonging to a multicast group to allow the access network to properly notify the subscriber stations of a the multicast service. Such a signaling further allows the subscriber stations to recognize the multicast service notification to participate in the multicast service.

    摘要翻译： 公开了蜂窝电话系统中的多播服务通知的方法和系统，以使蜂窝电话系统能够提供组播和点到点服务。 几个实施例描述了属于多播组的接入网络和用户站之间的信令交互，以允许接入网络正确地通知多播服务的订户站。 这样的信令进一步允许用户站识别多播服务通知以参与组播服务。

    Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal
    85.
    发明授权
    Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal 失效
    在采用潜在门控导频信号的通信系统中进行相干解调的方法和装置

    公开(公告)号：US06807157B2

    公开(公告)日：2004-10-19

    申请号：US10441592

    申请日：2003-05-19

    申请人： Tao Chen ,  Yu-Chuan Lin

    发明人： Tao Chen ,  Yu-Chuan Lin

    IPC分类号： H04J116

    CPC分类号： H04B1/707 ,  H04B2201/70703 ,  H04L2027/0055 ,  H04L2027/0093

    摘要： The present invention is a novel and improved method and system for performing the pilot frequency tracking operation for coherent demodulation in a system employing a gated pilot signal. In particular, the present invention describes a method and apparatus in which two frequency tracking loops operate in parallel. The first frequency tracking loop performs its tracking operation based on the hypothesis that the received pilot is continuous throughout the frame's duration. The second frequency tracking loop performs the tracking operation based on the hypothesis that the received pilot is discontinuous and is only present for a portion of the frame's duration.

    摘要翻译： 本发明是一种用于在采用门控导频信号的系统中执行用于相干解调的导频跟踪操作的新颖和改进的方法和系统。 特别地，本发明描述了一种方法和装置，其中两个频率跟踪环路并行操作。 第一个频率跟踪循环基于接收到的导频在整个帧的持续时间内是连续的假设执行其跟踪操作。 第二频率跟踪循环基于所接收的导频是不连续的并且仅针对帧的持续时间的一部分存在的假设执行跟踪操作。

    Method and apparatus for efficient use of communication resources in a CDMA communication system
    86.
    发明授权
    Method and apparatus for efficient use of communication resources in a CDMA communication system 失效

    公开(公告)号：US06779147B2

    公开(公告)日：2004-08-17

    申请号：US09965189

    申请日：2001-09-25

    申请人： Tao Chen

    发明人： Tao Chen

    IPC分类号： G08C2502

    CPC分类号： H04L1/1867 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0033

    摘要： A method and accompanying apparatus provides for efficient use of communication resources in a CDMA communication system by controlling a transmitting source (300) for transmitting a packet of data over a data frame at a first data rate and at a power level and re-transmitting the packet of data at a second data rate over at least two frames of data at the power level when a receiving destination fails to decode the packet of data. A data rate and power level selector (303) selects the second data rate lower than the first data rate. The data rate and power level selector (303) determines energy per bit of the packet of data at a ratio of the first and second data rates, and selects the second data rate from the ratio such that the determined energy per bit is at a minimum level.

    Method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system
    87.
    发明授权
    Method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system 有权
    用于在码分多址通信系统中发起切换的有效候选频率​​搜索的方法和装置

    公开(公告)号：US06597922B1

    公开(公告)日：2003-07-22

    申请号：US09312262

    申请日：1999-05-14

    申请人： Fuyun Ling ,  Jack Holtzman ,  Charles E. Wheatley, III ,  Tao Chen ,  Edward G. Tiedemann ,  Gilbert Leung

    发明人： Fuyun Ling ,  Jack Holtzman ,  Charles E. Wheatley, III ,  Tao Chen ,  Edward G. Tiedemann ,  Gilbert Leung

    IPC分类号： H04B700

    CPC分类号： H04W52/225 ,  H04W36/0094 ,  H04W52/40 ,  H04W52/42

    摘要： A method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system. The method includes when the pilot signal is transmitted by the mobile station that is power controlled to a target receive level, the traffic channel power level is increased relative to the pilot channel to improve receiver performance. An improved feature is that the received pilot received at the base station stays the same while the receiver receives extra energy in the redundant traffic symbols received to enhance the probability of correctly decoding the received frame. The base station detects the absence of the mobile station transmitted signal from the frequency of interest. If the base station is aware of the starting time and duration of the absence, it can focus its detection during this predetermined time period. The performance can be improved if the absence of the signal is spread across two frames at the frame boundary.

    摘要翻译： 一种用于在码分多址通信系统中发起切换的有效候选频率​​搜索的方法和装置。 该方法包括当导频信号由被功率控制到目标接收电平的移动台发送时，业务信道功率电平相对于导频信道增加，以提高接收机性能。 改进的特征是在基站处接收到的接收到的导频保持相同，而接收机在接收到的冗余业务符号中接收到额外的能量以增强正确解码接收帧的概率。 基站从感兴趣的频率检测到不存在移动台发送的信号。 如果基站知道不存在的起始时间和持续时间，则可以在该预定时间段内集中其检测。 如果没有信号在帧边界的两个帧上扩展，则可以提高性能。

    Reduced peak-to-average amplitude multichannel link
    88.
    发明授权
    Reduced peak-to-average amplitude multichannel link 有权
    降低峰均幅度多通道链路

    公开(公告)号：US06535478B2

    公开(公告)日：2003-03-18

    申请号：US09908665

    申请日：2001-07-17

    申请人： Edward G. Tiedemann, Jr. ,  Ramin Rezaiifar ,  Olivier Glauser ,  Tao Chen

    发明人： Edward G. Tiedemann, Jr. ,  Ramin Rezaiifar ,  Olivier Glauser ,  Tao Chen

    IPC分类号： H04J1302

    CPC分类号： H04B1/707 ,  H04B2201/70706 ,  H04J13/004 ,  H04L27/2621

    摘要： A novel and improved method and apparatus for generating a reduced peak amplitude high data rate channel comprised of a set of lower rate channels is described. The set of lower rate channels are phase rotated before being summed and transmitted. The amount of phase rotation is dependent on the number of channels used to form the higher rate channel. In an embodiment where two lower rate channels are used, the in-phase and quadrature-phase components of the two channels are complex multiplied before upconversion with an in-phase and quadrature-phase sinusoids. For a high rate channel comprised of more than two lower rate channels, the in-phase and quadrature-phase component of each channel is upconverted with a set of sinusoids that are phase offset from one another.

    摘要翻译： 描述了一种用于产生由一组较低速率信道组成的降低峰值幅度的高数据速率信道的新颖和改进的方法和装置。 较低速率信道的集合在被相加和发送之前被相位旋转。 相位旋转量取决于用于形成较高速率通道的通道数。 在使用两个较低速率信道的实施例中，两个信道的同相和正交相位分量在上变频之前与同相和正交相位正弦波相乘。 对于由多于两个较低速率信道组成的高速率信道，每个信道的同相和正交相位分量由彼此相位偏移的一组正弦波上变频。

    Method and apparatus for performing mobile assisted hard handoff between communication systems
    89.
    发明授权
    Method and apparatus for performing mobile assisted hard handoff between communication systems 有权
    用于在通信系统之间执行移动辅助硬切换的方法和装置

    公开(公告)号：US06304755B1

    公开(公告)日：2001-10-16

    申请号：US09307878

    申请日：1999-05-10

    申请人： Edward G. Tiedemann, Jr. ,  Tao Chen ,  Charles E. Wheatley, III

    发明人： Edward G. Tiedemann, Jr. ,  Tao Chen ,  Charles E. Wheatley, III

    IPC分类号： H04Q738

    CPC分类号： H04W36/0094 ,  H04W36/0061 ,  H04W36/0066 ,  H04W36/14 ,  H04W36/30 ,  Y02D70/00

    摘要： A method and apparatus for performing inter-system hard handoff between communication systems or inter-frequency hard handoff within a CDMA communication system is disclosed. The purpose of this invention is to reduce the probability of dropped calls during inter-system hard handoff. In the event that a hard handoff attempt is unsuccessful, the mobile station will return to the original system with information which the communication system of the present invention uses to assist in the performance of future handoff attempts. Alternatively, with no handoff attempt made, the mobile station monitors the destination system then returns to the original system with information used to assist in subsequent handoff attempts. The information returned from monitoring a CDMA system consists of results of a search for one or more pilots given at offsets in a specific list provided to the mobile station by the base station or a set of offsets based upon a predetermined search algorithm.

    摘要翻译： 公开了一种用于在CDMA通信系统内进行通信系统之间的系统间硬切换或频间硬切换的方法和装置。 本发明的目的是降低在系统间硬切换期间掉话的可能性。 在硬切换尝试不成功的情况下，移动台将利用本发明的通信系统用于协助未来切换尝试的执行的信息返回到原始系统。 或者，在没有进行切换尝试的情况下，移动台监视目的地系统，然后利用用于辅助随后的切换尝试的信息返回到原始系统。 从监视CDMA系统返回的信息包括搜索由基站提供给移动台的特定列表中的偏移处给出的一个或多个导频的结果或基于预定搜索算法的一组偏移量的结果。