Radio interface synchronization
    11.
    发明授权
    Radio interface synchronization 有权
    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

    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。

    Return link time adjustments in FDD OFDMA or SC-FDM systems
    12.
    发明授权
    Return link time adjustments in FDD OFDMA or SC-FDM systems 有权
    在FDD OFDMA或SC-FDM系统中返回链路时间调整

    公开(公告)号:US08199739B2

    公开(公告)日:2012-06-12

    申请号:US12408355

    申请日:2009-03-20

    IPC分类号: H04J1/00

    CPC分类号: H04L27/2607 H04L27/2655

    摘要: A method for adjusting timing in a Frequency Division Multiplexing (FDM) system, including receiving a request to perform a timing correction, generating a time domain FDM symbol, and controlling the timing correction in the time domain FDM symbol by at least one of adjusting a length of a cyclic prefix, overlapping a portion of adjacent FDM symbols, adjusting a symbol windowing length, or utilizing a return link (RL) silence interval.

    摘要翻译: 一种用于在频分复用(FDM)系统中调整定时的方法,包括接收执行定时校正的请求,产生时域FDM符号,以及通过以下步骤中的至少一个来控​​制时域FDM符号中的定时校正: 循环前缀的长度,与相邻FDM符号的一部分重叠,调整符号加窗长度,或利用返回链路(RL)静默间隔。

    WALL CLOCK TIMER AND SYSTEM FOR GENERIC MODEM
    13.
    发明申请
    WALL CLOCK TIMER AND SYSTEM FOR GENERIC MODEM 失效
    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

    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。

    RETURN LINK TIME ADJUSTMENTS IN FDD OFDMA OR SC-FDM SYSTEMS
    14.
    发明申请
    RETURN LINK TIME ADJUSTMENTS IN FDD OFDMA OR SC-FDM SYSTEMS 有权
    在FDD OFDMA或SC-FDM系统中返回链路时间调整

    公开(公告)号:US20090245222A1

    公开(公告)日:2009-10-01

    申请号:US12408355

    申请日:2009-03-20

    IPC分类号: H04J1/00

    CPC分类号: H04L27/2607 H04L27/2655

    摘要: A method for adjusting timing in a Frequency Division Multiplexing (FDM) system, including receiving a request to perform a timing correction, generating a time domain FDM symbol, and controlling the timing correction in the time domain FDM symbol by at least one of adjusting a length of a cyclic prefix, overlapping a portion of adjacent FDM symbols, adjusting a symbol windowing length, or utilizing a return link (RL) silence interval.

    摘要翻译: 一种用于在频分复用(FDM)系统中调整定时的方法,包括接收执行定时校正的请求,产生时域FDM符号,以及通过以下步骤中的至少一个来控​​制时域FDM符号中的定时校正: 循环前缀的长度,与相邻FDM符号的一部分重叠,调整符号加窗长度,或利用返回链路(RL)静默间隔。

    EFFICIENT SLEEP MODE OPERATION FOR OFDMA SYSTEMS
    15.
    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

    IPC分类号: H04B1/50

    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。

    Zeroing-out LLRs using demod-bitmap to improve performance of modem decoder
    16.
    发明授权
    Zeroing-out LLRs using demod-bitmap to improve performance of modem decoder 有权
    使用解调位图清零LLR,以提高调制解调器解码器的性能

    公开(公告)号:US08437433B2

    公开(公告)日:2013-05-07

    申请号:US12404636

    申请日:2009-03-16

    IPC分类号: H03D3/24

    CPC分类号: H04L25/061 H04L27/2647

    摘要: A demodulation mask bitmap includes binary mask values. Each mask value corresponds to an input resource element to a demodulator. For each mask value of a first state, a demodulation engine of the demodulator is not clocked and the demodulator outputs a zero-valued resource element. For each mask value of a second state, the demodulation engine is clocked, the input resource element is demodulated, and the demodulator outputs a demodulated resource element. A demodulation mask bitmap is designed to mask pilot resource elements and corrupted resource elements. Power is conserved by not clocking the demodulation engine for corrupted and pilot resource elements. Subsequent LLR generation and decode operations are simplified. Decoder performance is improved because the decoder does not decode LLR values derived from corrupted resource elements and/or resource elements not relevant to the reconstruction of a communicated message.

    摘要翻译: 解调掩码位图包括二进制掩码值。 每个掩码值对应于解调器的输入资源元素。 对于第一状态的每个掩码值,解调器的解调引擎不被计时,并且解调器输出零值资源元素。 对于第二状态的每个掩码值,解调引擎被计时,输入资源元素被解调,并且解调器输出解调的资源元素。 解调屏蔽位图被设计为屏蔽导频资源元素和损坏的资源元素。 通过不对解调引擎计时损坏和导频资源元素来节省功率。 随后的LLR生成和解码操作被简化。 解码器性能得到改善,因为解码器不解码从损坏的资源元素导出的LLR值和/或与所传送的消息的重建无关的资源元素。

    REFERENCE SIGNAL MANAGEMENT IN MOBILE SYSTEMS
    17.
    发明申请
    REFERENCE SIGNAL MANAGEMENT IN MOBILE SYSTEMS 失效
    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

    IPC分类号: H04W72/00

    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。

    ZEROING-OUT LLRS USING DEMOD-BITMAP TO IMPROVE PERFORMANCE OF MODEM DECODER
    18.
    发明申请
    ZEROING-OUT LLRS USING DEMOD-BITMAP TO IMPROVE PERFORMANCE OF MODEM DECODER 有权
    使用DEMOD-BITMAP来提高调制解调器性能的ZEROING-OUT LLRS

    公开(公告)号:US20090245431A1

    公开(公告)日:2009-10-01

    申请号:US12404636

    申请日:2009-03-16

    IPC分类号: H04L27/06

    CPC分类号: H04L25/061 H04L27/2647

    摘要: A demodulation mask bitmap includes binary mask values. Each mask value corresponds to an input resource element to a demodulator. For each mask value of a first state, a demodulation engine of the demodulator is not clocked and the demodulator outputs a zero-valued resource element. For each mask value of a second state, the demodulation engine is clocked, the input resource element is demodulated, and the demodulator outputs a demodulated resource element. A demodulation mask bitmap is designed to mask pilot resource elements and corrupted resource elements. Power is conserved by not clocking the demodulation engine for corrupted and pilot resource elements. Subsequent LLR generation and decode operations are simplified. Decoder performance is improved because the decoder does not decode LLR values derived from corrupted resource elements and/or resource elements not relevant to the reconstruction of a communicated message.

    摘要翻译: 解调掩码位图包括二进制掩码值。 每个掩码值对应于解调器的输入资源元素。 对于第一状态的每个掩码值,解调器的解调引擎不被计时,并且解调器输出零值资源元素。 对于第二状态的每个掩码值,解调引擎被计时,输入资源元素被解调,并且解调器输出解调的资源元素。 解调屏蔽位图被设计为屏蔽导频资源元素和损坏的资源元素。 通过不对解调引擎计时损坏和导频资源元素来节省功率。 随后的LLR生成和解码操作被简化。 解码器性能得到改善,因为解码器不解码从损坏的资源元素导出的LLR值和/或与所传送的消息的重建无关的资源元素。

    APPARATUS, PROCESSES, AND ARTICLES OF MANUFACTURE FOR FAST FOURIER TRANSFORMATION AND BEACON SEARCHING
    19.
    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

    IPC分类号: H04J11/00 G06F17/14

    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。

    BUFFERED DEMOD AND DEMAP FUNCTIONS
    20.
    发明申请
    BUFFERED DEMOD AND DEMAP FUNCTIONS 失效
    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

    IPC分类号: H04J11/00

    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。