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11. 发明申请

US20090247156A1 REFERENCE SIGNAL MANAGEMENT IN MOBILE SYSTEMS 失效
标题翻译：移动系统参考信号管理
公开(公告)号：US20090247156A1
公开(公告)日：2009-10-01
申请号：US12349399
申请日：2009-01-06
申请人： Hemanth Sampath , Jeremy H. Lin , Kurt W. Otte , Rajat Prakash
发明人： Hemanth Sampath , Jeremy H. Lin , Kurt W. Otte , Rajat Prakash
IPC分类号： H04W72/00
CPC分类号： H04W36/0083 , H04W36/14 , H04W48/12 , H04W52/0229 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/164
摘要： A reference signal management (RSM) program executing on a mobile device detects multiple reference signals, allocates those reference signals into groups, and performs reference signal management functions using information conveyed in the reference signals. The RSM program detects both broadband and narrowband reference signals and maintains updated groups of reference signals that are transmitted from access points with independent configurations or different radio technologies. Battery power of the mobile device is efficiently used to manage reference signals in heterogeneous network environments by preventing unnecessary handoffs, overhead downloads, access probes and new registrations. Reference signals are managed from both synchronous and asynchronous sectors and in idle mode as well as in connected state mode. The RSM program performs functions such as managing handoffs between access points, managing an idle mode of the mobile device, managing an active group of the detected reference signals, and collecting overhead parameters for the mobile device.
摘要翻译：在移动设备上执行的参考信号管理（RSM）程序检测多个参考信号，将这些参考信号分组，并使用在参考信号中传送的信息来执行参考信号管理功能。 RSM程序检测宽带和窄带参考信号，并维护从具有独立配置或不同无线电技术的接入点发送的更新的参考信号组。通过防止不必要的切换，开销下载，接入探测和新的注册，移动设备的电池功率被有效地用于在异构网络环境中管理参考信号。参考信号由同步和异步扇区以及空闲模式以及连接状态模式进行管理。 RSM程序执行诸如管理接入点之间的切换，管理移动设备的空闲模式，管理检测到的参考信号的活动组以及收集移动设备的开销参数的功能。

12. 发明申请

US20090245091A1 BUFFERED DEMOD AND DEMAP FUNCTIONS 失效
标题翻译：缓冲的演示和演示功能
公开(公告)号：US20090245091A1
公开(公告)日：2009-10-01
申请号：US12407482
申请日：2009-03-19
申请人： Jeremy H. Lin , Arunava Chaudhuri , Raghu N. Challa , Hemanth Sampath
发明人： Jeremy H. Lin , Arunava Chaudhuri , Raghu N. Challa , Hemanth Sampath
IPC分类号： H04J11/00
CPC分类号： H04L25/0202 , H04L5/0007 , H04L5/0023 , H04L27/265
摘要： An apparatus operable in a wireless communication system, the apparatus may include an FFT symbol buffer and a demapping device. The FFT symbol buffer can feed FFT symbol data derived from received communication signals to a channel estimation device and a shared buffer. The channel estimation device can also provide intermediate data to the shared buffer. The intermediate data may be in tile form and can be derived from the FFT symbol data. Further, the intermediate data can be stored in the shared buffer. The demapping device can extract the intermediate data from the shared buffer in various forms including sub-packet form.
摘要翻译：一种在无线通信系统中可操作的装置，该装置可以包括FFT符号缓冲器和解映射装置。 FFT符号缓冲器可以将从接收到的通信信号导出的FFT符号数据馈送到信道估计装置和共享缓冲器。信道估计装置还可以向共享缓冲器提供中间数据。中间数据可以是瓦片形式，并且可以从FFT符号数据导出。此外，中间数据可以存储在共享缓冲器中。解映射设备可以以包括子包形式的各种形式从共享缓冲器提取中间数据。

13. 发明授权

US08873671B2 Method and system for LLR buffer reduction in a wireless communication modem 有权
标题翻译：无线通信调制解调器中LLR缓冲区减少的方法和系统
公开(公告)号：US08873671B2
公开(公告)日：2014-10-28
申请号：US12405649
申请日：2009-03-17
申请人： Hemanth Sampath , Avneesh Agrawal , Jeremy H. Lin
发明人： Hemanth Sampath , Avneesh Agrawal , Jeremy H. Lin
IPC分类号： H04L27/00 , H04L1/00 , H03M13/00 , H04L25/06 , H03M13/45 , H04L5/00 , H04L1/18
CPC分类号： H03M13/45 , H03M13/6588 , H04L1/0046 , H04L1/1819 , H04L1/1822 , H04L1/1835 , H04L1/1845 , H04L5/0007 , H04L25/067
摘要： A system involves a transmitting device (for example, a first wireless communication device) and a receiving device (for example, a second wireless communication device). In the receiving device, LLR (Log-Likelihood Ratio) values are stored into an LLR buffer. LLR bit width is adjusted as a function of packet size of an incoming transmission to reduce the LLR buffer size required and/or to prevent LLR buffer capacity from being exceeded. The receiver may use a higher performance demodulator in order to maintain performance despite smaller LLR bit width. In the transmitting device, encoder code rate is adjusted as a function of receiver LLR buffer capacity and packet size of the outgoing transmission such that receiver LLR buffer capacity is not exceeded. Any combination of receiver LLR bit width adjustment, demodulator selection, and encoder code rate adjustment can be practiced to reduce LLR buffer size required while maintaining performance.
摘要翻译：系统涉及发送设备（例如，第一无线通信设备）和接收设备（例如，第二无线通信设备）。在接收设备中，将LLR（对数似然比）值存储到LLR缓冲器中。根据输入传输的分组大小调整LLR比特宽度，以减少所需的LLR缓冲区大小和/或防止超出LLR缓冲区容量。接收机可以使用更高性能的解调器，以便尽管较小的LLR位宽度来保持性能。在发送设备中，根据接收机LLR缓冲器容量和输出传输的分组大小调节编码器码率，使得接收机LLR缓冲器容量不被超过。可以实现接收机LLR位宽度调整，解调器选择和编码器码率调整的任何组合，以在保持性能的同时减少所需的LLR缓冲区大小。

14. 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。

15. 发明授权

US08738680B2 Reuse engine with task list for fast fourier transform and method of using the same 有权
标题翻译：使用任务列表重新使用引擎进行快速傅立叶变换和使用相同的方法
公开(公告)号：US08738680B2
公开(公告)日：2014-05-27
申请号：US12411728
申请日：2009-03-26
申请人： Arunava Chaudhuri , Hemanth Sampath , Iwen Yao , Jeremy H. Lin , Raghu N. Challa , Min Wu
发明人： Arunava Chaudhuri , Hemanth Sampath , Iwen Yao , Jeremy H. Lin , Raghu N. Challa , Min Wu
IPC分类号： G06F17/14
CPC分类号： G06F17/142 , H04L5/0007 , H04L5/0023 , H04L5/0053 , H04L27/265 , H04L27/2662
摘要： An improved processing engine for performing Fourier transforms includes an instruction processor configured to process sequential instruction software commands and a Fourier transform engine coupled to the instruction processor. The Fourier transform engine is configured to perform Fourier transforms on a serial stream of data. The Fourier transform engine is configured to receive configuration information and operational data from the instruction processor via a set of software tasks.
摘要翻译：用于执行傅里叶变换的改进的处理引擎包括配置成处理顺序指令软件命令的指令处理器和耦合到指令处理器的傅里叶变换引擎。傅立叶变换引擎被配置为对串行数据流执行傅里叶变换。傅里叶变换引擎被配置为经由一组软件任务从指令处理器接收配置信息和操作数据。

16. 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。

17. 发明授权

US08365047B2 FEC code and code rate selection based on packet size 有权
公开(公告)号：US08365047B2
公开(公告)日：2013-01-29
申请号：US13330999
申请日：2011-12-20
申请人： Ravi Palanki , Jeremy H. Lin , Aamod Khandekar , Alexei Gorokhov , Avneesh Agrawal
发明人： Ravi Palanki , Jeremy H. Lin , Aamod Khandekar , Alexei Gorokhov , Avneesh Agrawal
IPC分类号： H03M13/00
CPC分类号： H04L1/0007 , H04L1/0009 , H04L1/0021 , H04L1/0042 , H04L1/1812 , H04L1/1822
摘要： Techniques for encoding and decoding data are described. In an aspect, multiple code rates for a forward error correction (FEC) code may be supported, and a suitable code rate may be selected based on packet size. A transmitter may obtain at least one threshold to use for code rate selection, determine a packet size to use for data transmission, and select a code rate from among the multiple code rates based on the packet size and the at least one threshold. In another aspect, multiple FEC codes of different types (e.g., Turbo, LDPC, and convolutional codes) may be supported, and a suitable FEC code may be selected based on packet size. The transmitter may obtain at least one threshold to use for FEC code selection and may select an FEC code from among the multiple FEC codes based on the packet size and the at least one threshold.

18. 发明授权

US07215935B2 Segmented CDMA searching 有权
标题翻译：分段CDMA搜索
公开(公告)号：US07215935B2
公开(公告)日：2007-05-08
申请号：US10053398
申请日：2002-01-17
申请人： Subramanya P. Rao , Da-shan Shiu , Jeremy H. Lin , Jeong Geun Kim
发明人： Subramanya P. Rao , Da-shan Shiu , Jeremy H. Lin , Jeong Geun Kim
IPC分类号： H04B1/18 , H04B1/16
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。

19. 发明授权

US06856611B2 Radio interface synchronization 有权
标题翻译：无线接口同步
公开(公告)号：US06856611B2
公开(公告)日：2005-02-15
申请号：US10413175
申请日：2003-04-11
申请人： Siddhartha Ray Chaudhuri , Chih-Ping Hsu , Chalapathi Rao Emani , Jeremy H. Lin , Gurdeep Singh
发明人： Siddhartha Ray Chaudhuri , Chih-Ping Hsu , Chalapathi Rao Emani , Jeremy H. Lin , Gurdeep Singh
IPC分类号： H04B1/707 , H04B7/26 , H04W36/18 , H04B7/216
CPC分类号： H04B1/7083 , H04B1/70735 , H04W36/18
摘要： Various techniques are disclosed for unambiguously determining and tracking frame offset in asynchronous wireless communication user equipment. The user equipment determines the unambiguous connection frame number of a downlink channel. The equipment then determines frame timing information for neighbor cells. The frame timing information for the primary common control physical channel and uplink dedicated physical channels is determined. The frame timing is determined as a coarse resolution frame offset in conjunction with a fine resolution chip offset. The frame numbering information for the uplink and downlink dedicated physical channels and the primary common control physical channel is also determined. Then the frame number and timing information is updated using a counter accurate to one chip resolution. The frame offset is updated if the number of chips underflows or overflows a predetermined window. Frame timing may be updated by updating only the fine chip offset or may be completely determined.
摘要翻译：公开了用于明确地确定和跟踪异步无线通信用户设备中的帧偏移的各种技术。用户设备确定下行链路信道的明确连接帧号。然后，设备确定相邻小区的帧定时信息。确定主公共控制物理信道和上行专用物理信道的帧定时信息。帧定时被确定为结合精细分辨率芯片偏移的粗分辨率帧偏移。还确定了用于上行链路和下行链路专用物理信道的帧编号信息和主公共控制物理信道。然后使用精确到一个芯片分辨率的计数器来更新帧号和定时信息。如果芯片数量下降或溢出预定窗口，则更新帧偏移。可以仅通过更新精细的码片偏移来更新帧定时，或者可以完全确定帧定时。

20. 发明申请

US20090245334A1 WALL CLOCK TIMER AND SYSTEM FOR GENERIC MODEM 失效
标题翻译：一般调制解调器的时钟定时器和系统
公开(公告)号：US20090245334A1
公开(公告)日：2009-10-01
申请号：US12261937
申请日：2008-10-30
申请人： Arunava Chaudhuri , Iwen Yao , Jeremy H. Lin , Remi Gurski
发明人： Arunava Chaudhuri , Iwen Yao , Jeremy H. Lin , Remi Gurski
IPC分类号： H04B1/38
CPC分类号： H04B1/406
摘要： A modem (for example, a modem within a cellular telephone) includes a plurality of Wireless Communication System Modem Sub-Circuits (WCSMSCs). Each WCSMSC receives a control signal generated by a corresponding one of a plurality of programmable timers. Each timer receives the same sequence of count values from a wall clock counter. A processor that controls overall modem operation can program a timer to generate a control pulse at a particular count time of the wall clock counter. The processor can also program a timer to generate a periodic control signal. The control signals output from the timers orchestrate when the various WCSMSCs start operating in the processing of a frame. By virtue of the programmability of the timers, the wall clock timer system is programmable to generate customized control signals such that frames of new and different protocols having arbitrary frame structures can be processed by the same modem/timer system.
摘要翻译：调制解调器（例如，蜂窝电话中的调制解调器）包括多个无线通信系统调制解调器子电路（WCSMSC）。每个WCSMSC接收由多个可编程定时器中相应的一个产生的控制信号。每个定时器从挂钟计数器接收相同的计数值序列。控制整个调制解调器操作的处理器可以编程定时器以在挂钟计数器的特定计数时间产生控制脉冲。处理器还可以编程定时器以产生周期性控制信号。当各种WCSMSC在帧的处理中开始运行时，从定时器输出的控制信号协调编排。通过定时器的可编程性，挂钟计时器系统可编程以产生定制的控制信号，使得具有任意帧结构的新协议和不同协议的帧可以由相同的调制解调器/定时器系统来处理。

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