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1. 发明申请

US20090245230A1 COMPENSATING FOR DRIFTS OCCURRING DURING SLEEP TIMES IN ACCESS TERMINALS 有权
标题翻译：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。

2. 发明授权

US08451740B2 Compensating for drifts occurring during sleep times in access terminals 有权
标题翻译：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。

3. 发明授权

US08787989B2 Efficient sleep mode operation for OFDMA systems 有权
标题翻译： 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。

4. 发明申请

US20090209272A1 EFFICIENT SLEEP MODE OPERATION FOR OFDMA SYSTEMS 有权
标题翻译： 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。

5. 发明申请

US20090245092A1 APPARATUS, PROCESSES, AND ARTICLES OF MANUFACTURE FOR FAST FOURIER TRANSFORMATION AND BEACON SEARCHING 审中-公开
标题翻译：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。

6. 发明申请

US20100067421A1 APPARATUS AND METHODS FOR CONTROLLING AN IDLE MODE IN A WIRELESS DEVICE 有权
标题翻译：用于控制无线设备中的空闲模式的装置和方法
公开(公告)号：US20100067421A1
公开(公告)日：2010-03-18
申请号：US12557407
申请日：2009-09-10
申请人： Alexei Y. Gorokhov , Ravi Palanki , Tamer A. Kadous , Fatih Ulupinar
发明人： Alexei Y. Gorokhov , Ravi Palanki , Tamer A. Kadous , Fatih Ulupinar
IPC分类号： G08C17/00
CPC分类号： H04W52/0216 , H04W48/12 , H04W52/0206 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/164 , Y02D70/22 , Y02D70/23
摘要： Apparatus and methods are disclosed for control of an idle mode in a wireless device. In particular, the idle mode duty cycle of a preamble transmission by an access point (AP), as an example, is variably or adaptively set in response to determined conditions of the wireless neighborhood. The conditions determined include the whether or not other wireless devices are present in the vicinity of sensing wireless device, as well as the state of those devices present, such as whether they are in an idle mode or an active mode.
摘要翻译：公开了用于控制无线设备中的空闲模式的装置和方法。具体地，作为示例，由接入点（AP）的前导码传输的空闲模式占空比可响应于所确定的无线邻域的条件而被可变地或自适应地设置。确定的条件包括其他无线设备是否存在于感测无线设备附近，以及存在的那些设备的状态，例如它们是处于空闲模式还是活动模式。

7. 发明授权

US08576760B2 Apparatus and methods for controlling an idle mode in a wireless device 有权
标题翻译：用于控制无线设备中的空闲模式的装置和方法
公开(公告)号：US08576760B2
公开(公告)日：2013-11-05
申请号：US12557407
申请日：2009-09-10
申请人： Alexei Y. Gorokhov , Ravi Palanki , Tamer A. Kadous , Fatih Ulupinar
发明人： Alexei Y. Gorokhov , Ravi Palanki , Tamer A. Kadous , Fatih Ulupinar
IPC分类号： G08C17/00
CPC分类号： H04W52/0216 , H04W48/12 , H04W52/0206 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/164 , Y02D70/22 , Y02D70/23
摘要： Apparatus and methods are disclosed for control of an idle mode in a wireless device. In particular, the idle mode duty cycle of a preamble transmission by an access point (AP), as an example, is variably or adaptively set in response to determined conditions of the wireless neighborhood. The conditions determined include the whether or not other wireless devices are present in the vicinity of sensing wireless device, as well as the state of those devices present, such as whether they are in an idle mode or an active mode.
摘要翻译：公开了用于控制无线设备中的空闲模式的装置和方法。具体地，作为示例，由接入点（AP）的前导码传输的空闲模式占空比可响应于所确定的无线邻域的条件而被可变地或自适应地设置。确定的条件包括其他无线设备是否存在于感测无线设备附近，以及存在的那些设备的状态，例如它们是处于空闲模式还是活动模式。

8. 发明授权

US09083524B2 Systems and methods for sending an acknowledgement message in a wireless communication system 有权
标题翻译：用于在无线通信系统中发送确认消息的系统和方法
公开(公告)号：US09083524B2
公开(公告)日：2015-07-14
申请号：US12409832
申请日：2009-03-24
申请人： Arunava Chaudhuri , Hemanth Sampath , Raghu N. Challa , Ravi Palanki , Sunil K. Kandukuri Narayan
发明人： Arunava Chaudhuri , Hemanth Sampath , Raghu N. Challa , Ravi Palanki , Sunil K. Kandukuri Narayan
IPC分类号： H04L1/20 , H04L1/16
CPC分类号： H04L1/20 , H04L1/1607 , H04L1/208
摘要： A method for sending an acknowledgment message in a wireless communication system is disclosed. A first signal is received before receiving a second signal from a transmitter. Decoded first data is extracted from the first signal. A third signal is produced by encoding and modulating the decoded first data. The second signal is demodulated to produce second symbols. The third signal and the second symbols are correlated.
摘要翻译：公开了一种用于在无线通信系统中发送确认消息的方法。在从发射机接收第二信号之前接收第一信号。从第一信号中提取解码的第一数据。通过对解码的第一数据进行编码和调制来产生第三信号。第二信号被解调以产生第二符号。第三信号和第二符号相关。

9. 发明申请

US20080182585A1 DEMODULATION OF A SUBSET OF AVAILABLE LINK ASSIGNMENT BLOCKS 有权
标题翻译：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。

10. 发明授权

US08675693B2 Iterative decoding with configurable number of iterations 失效
标题翻译：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。

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