公开(公告)号：US07251467B2

公开(公告)日：2007-07-31

申请号：US10684771

申请日：2003-10-14

申请人： Andrew Sendonaris ,  Da-shan Shiu ,  Dominic Gerard Farmer ,  Jeremy H. Lin ,  Parvathanathan Subrahmanya ,  Thomas K. Rowland

发明人： Andrew Sendonaris ,  Da-shan Shiu ,  Dominic Gerard Farmer ,  Jeremy H. Lin ,  Parvathanathan Subrahmanya ,  Thomas K. Rowland

IPC分类号： H04B1/06 ,  H04L7/04

CPC分类号： H04L27/0014 ,  G01S19/235 ,  H04B1/3805 ,  H04L2027/0077

摘要： Systems and techniques are disclosed relating to wireless communications. These systems and techniques involve wireless communications wherein a device may be configured to recover an information signal from a carrier using a reference signal, detect a frequency error in the information signal; and periodically tune the reference signal to reduce the frequency error.

摘要翻译： 公开了与无线通信有关的系统和技术。 这些系统和技术涉及无线通信，其中设备可以被配置为使用参考信号从载波恢复信息信号，检测信息信号中的频率误差; 并定期调谐参考信号以减少频率误差。

公开(公告)号：US08787433B2

公开(公告)日：2014-07-22

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 ,  H04L12/28

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。

公开(公告)号：US08520571B2

公开(公告)日：2013-08-27

申请号：US12396270

申请日：2009-03-02

申请人： Arunava Chaudhuri ,  Iwen Yao ,  Jeremy H. Lin ,  Ali RostamPisheh ,  Raghu Challa ,  Hemanth Sampath ,  Megan Wu ,  Joseph Zanotelli ,  Mrinal Nath

发明人： Arunava Chaudhuri ,  Iwen Yao ,  Jeremy H. Lin ,  Ali RostamPisheh ,  Raghu Challa ,  Hemanth Sampath ,  Megan Wu ,  Joseph Zanotelli ,  Mrinal Nath

IPC分类号： H04B7/00

CPC分类号： G06F15/7842

摘要： A flexible and reconfigurable digital system (for example, a wireless modem) includes a set of sub-circuits. Each sub-circuit includes a task manager and an amount of configurable hardware circuitry for performing a type of operation on a data stream. The task manager of a sub-circuit can configure and control the configurable hardware of the sub-circuit. A central processor configures and orchestrates operation of the sub-circuits by maintaining a set of task lists in a tightly coupled memory. Each task list includes task instructions for a corresponding sub-circuit. The task manager of a sub-circuit reads task instructions from its task list and controls its associated hardware circuitry as directed by the instructions. A timestamp task instruction and a push task instruction and the task list architecture allow modem sub-circuits to be easily reconfigured to operate in accordance with either a first air interface standard or a second air interface standard.

摘要翻译： 灵活和可重新配置的数字系统（例如，无线调制解调器）包括一组子电路。 每个子电路包括任务管理器和用于对数据流执行一种操作的可配置硬件电路的量。 子电路的任务管理器可以配置和控制子电路的可配置硬件。 中央处理器通过在紧耦合存储器中维护一组任务列表来配置和协调子电路的操作。 每个任务列表包括相应子电路的任务指令。 子电路的任务管理器从其任务列表读取任务指令，并根据指令控制其相关联的硬件电路。 时间戳任务指令和推送任务指令以及任务列表架构允许将调制解调器子电路轻松地重新配置为根据第一空中接口标准或第二空中接口标准进行操作。

公开(公告)号：US08520500B2

公开(公告)日：2013-08-27

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。

公开(公告)号：US08208920B2

公开(公告)日：2012-06-26

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： H04W4/00 ,  H04W36/00 ,  H04B1/38

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。

公开(公告)号：US20100279709A1

公开(公告)日：2010-11-04

申请号：US12432355

申请日：2009-04-29

申请人： Reza Shahidi ,  Sanjeev A. Athalye ,  Jeremy H. Lin ,  Victor A. Abramsky

发明人： Reza Shahidi ,  Sanjeev A. Athalye ,  Jeremy H. Lin ,  Victor A. Abramsky

IPC分类号： H04W24/00 ,  H04M1/00

CPC分类号： H04B1/406 ,  H04B1/3805 ,  H04B7/0602 ,  H04B7/0689 ,  H04B7/0805 ,  H04B7/0871

摘要： Systems and methodologies are described that facilitate multimode communication in wireless networks. Receiving and/or transmitting components can comprise a plurality of receive paths over which antennas can forward concurrently received signals to facilitate simultaneous or shared receiving of signals related to disparate communication technologies. The receive paths can be implemented by one or more multiplexers (e.g., diplexers, triplexers, etc.) to facilitate separating signals simultaneously received over disparate bands. In addition, antenna switching is described to facilitate shared receiving. Multimode transmitting is similarly provided. In particular, voice, data and global positioning system (GPS) signals can be concurrently received and processed by a wireless device.

摘要翻译： 描述了促进无线网络中的多模通信的系统和方法。 接收和/或发送组件可以包括多个接收路径，天线可以同时转发所接收的信号，以促进与不同通信技术相关的信号的同时或共享的接收。 接收路径可以由一个或多个复用器（例如，双工器，三工器等）来实现，以便于分离同时在不同频带上接收的信号。 另外，天线切换被描述为便于共享接收。 类似地提供多模发送。 特别地，语音，数据和全球定位系统（GPS）信号可以由无线设备同时接收和处理。

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。

公开(公告)号：US06760573B2

公开(公告)日：2004-07-06

申请号：US10261976

申请日：2002-10-01

申请人： Parvathanathan Subrahmanya ,  Jeremy H. Lin

发明人： Parvathanathan Subrahmanya ,  Jeremy H. Lin

IPC分类号： H04B118

CPC分类号： H04B1/712

摘要： Techniques for inner/outer loop tracking that is stable and provides desirable loop convergence characteristics are disclosed. In one aspect, the contribution from any one inner loop to the tracking function of the outer loop is limited, to prohibit any one received signal component from dominating the outer loop. In another aspect, the rate of outer loop tracking variation is controlled to provide inner and outer loop stability. Various other aspects are also presented. These aspects have the benefit of providing stable inner and outer loop control, as well as efficient convergence and tracking by the various loops, resulting in reduced frequency error and improved communication performance.

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。

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。