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    APPARATUS, PROCESSES, AND ARTICLES OF MANUFACTURE FOR FAST FOURIER TRANSFORMATION AND BEACON SEARCHING
    3.
    发明申请
    APPARATUS, PROCESSES, AND ARTICLES OF MANUFACTURE FOR FAST FOURIER TRANSFORMATION AND BEACON SEARCHING 审中-公开
    装置，工艺和制造快速FOURIER变换和BEACON搜索的文章

    公开(公告)号：US20090245092A1

    公开(公告)日：2009-10-01

    申请号：US12408378

    申请日：2009-03-20

    申请人： Hemanth Sampath ,  Xin Zhang ,  Jeremy H. Lin ,  Nistha Sharma ,  Ravi Palanki ,  Sunil K. Kandukuri Narayan

    发明人： Hemanth Sampath ,  Xin Zhang ,  Jeremy H. Lin ,  Nistha Sharma ,  Ravi Palanki ,  Sunil K. Kandukuri Narayan

    IPC分类号： H04J11/00 ,  G06F17/14

    CPC分类号： G06F17/142 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/265

    摘要： In embodiments, a wireless receiver employs a hardware-based Fast Fourier Transform (FFT) engine controlled by firmware. The FFT engine executes tasks stored in a task list. Each task is associated with a different portion of a signal, for example, one or more Orthogonal Frequency Division Modulated (OFDM) symbols. Each task may include configuration information for the FFT engine for configuring the engine to process the associated portion of the signal, a pointer to the portion to be processed, and another pointer to the memory for storing the output. The task list may be firmware controlled. Division of the FFT into a configurable hardware part driven by firmware to read and execute the tasks in the task list may speed up the FFT process and make it more flexible. A hardware beacon sorter may be coupled to the FFT engine to sort the sub-carriers according to their energies.

    摘要翻译： 在实施例中，无线接收机采用由固件控制的基于硬件的快速傅里叶变换（FFT）引擎。 FFT引擎执行任务列表中存储的任务。 每个任务与信号的不同部分相关联，例如一个或多个正交频分调制（OFDM）符号。 每个任务可以包括用于配置引擎以处理信号的相关部分的引擎的FFT引擎的配置信息，到要处理的部分的指针，以及用于存储输出的另一个指向存储器的指针。 任务列表可以是固件控制的。 将FFT分解为由固件驱动的可配置硬件部分，以读取和执行任务列表中的任务，可加速FFT过程并使其更加灵活。 硬件信标分类器可以耦合到FFT引擎，以根据它们的能量对子载波进行分类。

    COMPENSATING FOR DRIFTS OCCURRING DURING SLEEP TIMES IN ACCESS TERMINALS
    4.
    发明申请
    COMPENSATING FOR DRIFTS OCCURRING DURING SLEEP TIMES IN ACCESS TERMINALS 有权
    对接入终端中的休眠时间发生的升级进行补偿

    公开(公告)号：US20090245230A1

    公开(公告)日：2009-10-01

    申请号：US12407467

    申请日：2009-03-19

    申请人： Hemanth Sampath ,  Ravi Palanki ,  Jeremy H. Lin ,  Tamer A. Kadous

    发明人： Hemanth Sampath ,  Ravi Palanki ,  Jeremy H. Lin ,  Tamer A. Kadous

    IPC分类号： H04J3/06 ,  H04W68/00

    CPC分类号： H04W52/0274 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

    摘要： A method and apparatus are presented for compensating drifts in access terminals occurring during a sleep time. The method includes determining whether a sleep time exceeds a threshold, buffering time domain samples containing acquisition pilots and a paging channel, powering down RF circuitry in the access terminal after buffering samples, processing the samples to compensate for drift, and determining whether the access terminal was paged based upon the processed samples. The apparatus includes a digital front end, an FFT engine coupled to the digital front end, a symbol buffer coupled to the FFT engine, a processor coupled to the digital front end, FFT engine, and symbol buffer, and a memory coupled to the processor, the memory further comprising instructions for executing the method.

    摘要翻译： 提出一种用于补偿在睡眠时间期间发生的接入终端中的漂移的方法和装置。 该方法包括：确定休眠时间是否超过阈值，缓冲包含采集导频的时域采样和寻呼信道，在缓冲采样之后对接入终端中的RF电路进行供电，处理采样以补偿漂移，以及确定接入终端 根据加工样品进行分页。 该装置包括数字前端，耦合到数字前端的FFT引擎，耦合到FFT引擎的符号缓冲器，耦合到数字前端的处理器，FFT引擎和符号缓冲器以及耦合到处理器的存储器 所述存储器还包括用于执行所述方法的指令。

    DEMODULATION OF A SUBSET OF AVAILABLE LINK ASSIGNMENT BLOCKS
    5.
    发明申请
    DEMODULATION OF A SUBSET OF AVAILABLE LINK ASSIGNMENT BLOCKS 有权
    可链接分配块的解析

    公开(公告)号：US20080182585A1

    公开(公告)日：2008-07-31

    申请号：US12022085

    申请日：2008-01-29

    申请人： Ravi Palanki ,  Alexei Gorokhov ,  Hemanth Sampath

    发明人： Ravi Palanki ,  Alexei Gorokhov ,  Hemanth Sampath

    IPC分类号： H04Q7/20

    CPC分类号： H04W48/12 ,  H04W76/27

    摘要： Systems and methodologies are described that facilitate assigning indices to link assignment blocks (LABs) communicated via a downlink. Indices in a first subset are allocated to shared LABs, which are decoded by a plurality of access terminals. Indices in a second subset are assigned to unshared LABs, which are each intended for a particular recipient access terminal. Assignment of an index for each unshared LAB can be based upon a hash of an identifier corresponding to an intended recipient access terminal and/or access terminal capabilities. Moreover, an access terminal can decode LABs based upon corresponding indices. LABs with indices in a first range can be identified as shared LABs and decoded. Further, the access terminal can determine a second range of indices corresponding to unshared LABs to decode; the second range of indices includes fewer than all indices corresponding to unshared LABs in a frame sent by a base station.

    摘要翻译： 描述了便于将索引分配给经由下行链路传送的链路分配块（LAB）的系统和方法。 第一子集中的指示被分配给由多个接入终端解码的共享LAB。 第二子集中的索引被分配给未共享的LAB，每个LAB都用于特定的接收者接入终端。 每个非共享LAB的索引的分配可以基于与预期接收者接入终端和/或接入终端能力相对应的标识符的散列。 此外，接入终端可以基于相应的索引来解码LAB。 索引在第一范围内的LAB可以被识别为共享LAB并被解码。 此外，接入终端可以确定与未共享的LAB对应的索引的第二范围进行解码; 索引的第二范围包括少于由基站发送的帧中与非共享LAB相对应的全部索引。

    Efficient sleep mode operation for OFDMA systems
    6.
    发明授权
    Efficient sleep mode operation for OFDMA systems 有权
    OFDMA系统的高效休眠模式操作

    公开(公告)号：US08787989B2

    公开(公告)日：2014-07-22

    申请号：US12032467

    申请日：2008-02-15

    申请人： Ravi Palanki ,  Jeremy H. Lin ,  Hemanth Sampath

    发明人： Ravi Palanki ,  Jeremy H. Lin ,  Hemanth Sampath

    IPC分类号： H04B1/38

    CPC分类号： H04L27/2655 ,  H04B2201/70709 ,  H04L27/2649 ,  H04W52/0235 ,  Y02D70/00

    摘要： A communications system and method for a wireless mobile device is provided. The method includes performing sleep mode operations in a device and performing wake-up operations with one or more base stations in view of the sleep mode operations in the device. The method also includes demodulating a communications channel for the device during sleep mode operations in the device and prior to synchronizing with the base stations.

    摘要翻译： 提供了一种用于无线移动设备的通信系统和方法。 该方法包括在设备中执行休眠模式操作并且考虑到设备中的睡眠模式操作来执行与一个或多个基站的唤醒操作。 该方法还包括在设备中的睡眠模式操作期间以及在与基站同步之前解调设备的通信信道。

    Compensating for drifts occurring during sleep times in access terminals
    7.
    发明授权
    Compensating for drifts occurring during sleep times in access terminals 有权
    补偿接入终端睡眠时间发生的漂移

    公开(公告)号：US08451740B2

    公开(公告)日：2013-05-28

    申请号：US12407467

    申请日：2009-03-19

    申请人： Hemanth Sampath ,  Ravi Palanki ,  Jeremy H. Lin ,  Tamer A. Kadous

    发明人： Hemanth Sampath ,  Ravi Palanki ,  Jeremy H. Lin ,  Tamer A. Kadous

    IPC分类号： H04W4/00

    CPC分类号： H04W52/0274 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

    摘要： A method and apparatus are presented for compensating drifts in access terminals occurring during a sleep time. The method includes determining whether a sleep time exceeds a threshold, buffering time domain samples containing acquisition pilots and a paging channel, powering down RF circuitry in the access terminal after buffering samples, processing the samples to compensate for drift, and determining whether the access terminal was paged based upon the processed samples. The apparatus includes a digital front end, an FFT engine coupled to the digital front end, a symbol buffer coupled to the FFT engine, a processor coupled to the digital front end, FFT engine, and symbol buffer, and a memory coupled to the processor, the memory further comprising instructions for executing the method.

    摘要翻译： 提出一种用于补偿在睡眠时间期间发生的接入终端中的漂移的方法和装置。 该方法包括：确定睡眠时间是否超过阈值，缓冲包含采集导频的时域采样和寻呼信道，在缓冲采样之后对接入终端中的RF电路进行供电，处理采样以补偿漂移，以及确定接入终端 根据加工样品进行分页。 该装置包括数字前端，耦合到数字前端的FFT引擎，耦合到FFT引擎的符号缓冲器，耦合到数字前端的处理器，FFT引擎和符号缓冲器以及耦合到处理器的存储器 所述存储器还包括用于执行所述方法的指令。

    Iterative decoding with configurable number of iterations
    8.
    发明授权
    Iterative decoding with configurable number of iterations 失效
    具有可配置次数迭代的迭代解码

    公开(公告)号：US08675693B2

    公开(公告)日：2014-03-18

    申请号：US12430629

    申请日：2009-04-27

    申请人： Ravi Palanki ,  Hemanth Sampath

    发明人： Ravi Palanki ,  Hemanth Sampath

    IPC分类号： H04J99/00

    CPC分类号： H04L1/005 ,  H04L1/0016 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0064 ,  H04L1/1812

    摘要： Techniques for transmitting and receiving data in a communication system are described. A receiver may iteratively decode a data packet and may obtain better performance with more decoding iterations. The receiver may select the number of decoding iterations based on at least one parameter (e.g., packet size) to tradeoff between decoder throughput and link performance. In one design, a transmitter may obtain a transport format selected based on the number of decoding iterations, process a data packet in accordance with the transport format, and send a transmission of the data packet to the receiver. The receiver may receive the transmission of the data packet and may perform decoding for the data packet for up to the selected number of decoding iterations. The transport format and/or CQI information may be determined based on an expected degradation in link performance due to the receiver performing the selected number of decoding iterations.

    摘要翻译： 描述在通信系统中发送和接收数据的技术。 接收机可以迭代地解码数据分组，并且可以通过更多的解码迭代获得更好的性能。 接收机可以基于至少一个参数（例如，分组大小）来选择解码迭代次数以在解码器吞吐量和链路性能之间进行权衡。 在一种设计中，发射机可以获得基于解码迭代次数选择的传输格式，根据传输格式处理数据分组，并将数据分组的传输发送到接收机。 接收机可以接收数据分组的传输，并且可以对数据分组执行多达解码迭代次数的解码。 传输格式和/或CQI信息可以基于由于接收机执行选定数量的解码迭代而导致的链路性能的预期劣化来确定。

    EFFICIENT SLEEP MODE OPERATION FOR OFDMA SYSTEMS
    9.
    发明申请
    EFFICIENT SLEEP MODE OPERATION FOR OFDMA SYSTEMS 有权
    OFDMA系统的高效休眠模式操作

    公开(公告)号：US20090209272A1

    公开(公告)日：2009-08-20

    申请号：US12032467

    申请日：2008-02-15

    申请人： Ravi Palanki ,  Jeremy H. Lin ,  Hemanth Sampath

    发明人： Ravi Palanki ,  Jeremy H. Lin ,  Hemanth Sampath

    IPC分类号： H04B1/50

    CPC分类号： H04L27/2655 ,  H04B2201/70709 ,  H04L27/2649 ,  H04W52/0235 ,  Y02D70/00

    摘要： A communications system and method for a wireless mobile device is provided. The method includes performing sleep mode operations in a device and performing wake-up operations with one or more base stations in view of the sleep mode operations in the device. The method also includes demodulating a communications channel for the device during sleep mode operations in the device and prior to synchronizing with the base stations.

    摘要翻译： 提供了一种用于无线移动设备的通信系统和方法。 该方法包括在设备中执行休眠模式操作并且考虑到设备中的睡眠模式操作来执行与一个或多个基站的唤醒操作。 该方法还包括在设备中的睡眠模式操作期间以及在与基站同步之前解调设备的通信信道。

    Demodulation of a subset of available link assignment blocks
    10.
    发明授权
    Demodulation of a subset of available link assignment blocks 有权
    对可用链路分配块的子集进行解调

    公开(公告)号：US08238295B2

    公开(公告)日：2012-08-07

    申请号：US12022085

    申请日：2008-01-29

    申请人： Ravi Palanki ,  Alexei Gorokhov ,  Hemanth Sampath

    发明人： Ravi Palanki ,  Alexei Gorokhov ,  Hemanth Sampath

    IPC分类号： H04W4/00

    CPC分类号： H04W48/12 ,  H04W76/27

    摘要： Systems and methodologies are described that facilitate assigning indices to link assignment blocks (LABs) communicated via a downlink. Indices in a first subset are allocated to shared LABs, which are decoded by a plurality of access terminals. Indices in a second subset are assigned to unshared LABs, which are each intended for a particular recipient access terminal. Assignment of an index for each unshared LAB can be based upon a hash of an identifier corresponding to an intended recipient access terminal and/or access terminal capabilities. Moreover, an access terminal can decode LABs based upon corresponding indices. LABs with indices in a first range can be identified as shared LABs and decoded. Further, the access terminal can determine a second range of indices corresponding to unshared LABs to decode; the second range of indices includes fewer than all indices corresponding to unshared LABs in a frame sent by a base station.

    摘要翻译： 描述了便于将索引分配给经由下行链路传送的链路分配块（LAB）的系统和方法。 第一子集中的指示被分配给由多个接入终端解码的共享LAB。 第二子集中的索引被分配给未共享的LAB，每个LAB都用于特定的接收者接入终端。 每个非共享LAB的索引的分配可以基于与预期接收者接入终端和/或接入终端能力相对应的标识符的散列。 此外，接入终端可以基于相应的索引来解码LAB。 索引在第一范围内的LAB可以被识别为共享LAB并被解码。 此外，接入终端可以确定与未共享的LAB对应的索引的第二范围进行解码; 索引的第二范围包括少于由基站发送的帧中与非共享LAB相对应的全部索引。