公开(公告)号：EP2266053A1

公开(公告)日：2010-12-29

申请号：EP09725530.1

申请日：2009-03-07

申请人： QUALCOMM Incorporated

发明人： CHAUDHURI, Arunava ,  YAO, Iwen ,  LIN, Jeremy, H. ,  ROSTAMPISHEH, Ali ,  CHALLA, Raghu ,  SAMPATH, Hemanth ,  WU, Megan ,  ZANOTELLI, Joseph ,  NATH, Mrinal

IPC分类号： G06F15/78 ,  H04M1/725

CPC分类号： G06F15/7842

摘要： A flexible and reconfϊgurable 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：EP2409446A1

公开(公告)日：2012-01-25

申请号：EP10709654.7

申请日：2010-03-15

申请人： QUALCOMM Incorporated

发明人： MAHESHWARI, Shailesh ,  HSU, Liangchi ,  GHOLMIEH, Aziz ,  KAPOOR, Rohit ,  CHAPONNIERE, Etienne, F. ,  ZHANG, Danlu ,  LIN, Jeremy, H.

IPC分类号： H04L1/18 ,  H04L29/08 ,  H04L29/06

CPC分类号： H04L1/1867 ,  H04L1/1896 ,  H04W12/02

摘要： A method, an apparatus, and a computer program product for wireless communication are provided to enable a reduction in processing power while handling high data rates. An apparatus includes a processing system configured to service a MAC PDU. Here, the MAC PDU includes a MAC header and at least one MAC SDU. The MAC header includes a transmission sequence number (TSN) having a length greater than 6 bits. Further, the processing system is configured to read the MAC header and to transport the MAC PDU in accordance with the MAC header between a MAC and a PHY utilizing one or more transport blocks over one or more transport channels.

摘要翻译： 提供了用于无线通信的方法，装置和计算机程序产品，以便在处理高数据速率的同时降低处理能力。 一种装置包括被配置为服务MAC PDU的处理系统。 这里，MAC PDU包括MAC头和至少一个MAC SDU。 MAC头包括长度大于6比特的发送序列号（TSN）。 此外，处理系统被配置为在一个或多个传输信道上利用一个或多个传输块来读取MAC报头并根据MAC和PHY之间的MAC报头来传送MAC PDU。

公开(公告)号：EP2272005A2

公开(公告)日：2011-01-12

申请号：EP09725649.9

申请日：2009-03-27

申请人： QUALCOMM Incorporated

发明人： CHAUDHURI, Arunava ,  SAMPATH, Hemanth ,  YAO, Iwen ,  LIN, Jeremy, H. ,  CHALLA, Raghu, N. ,  WU, Min

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.

公开(公告)号：EP1316158A2

公开(公告)日：2003-06-04

申请号：EP01968250.9

申请日：2001-08-28

申请人： QUALCOMM INCORPORATED

发明人： LIN, Jeremy, H. ,  AGRAWAL, Avneesh ,  TERASAWA, Daisuke

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/70751 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70707

摘要： Techniques for generating a reference signal based on time-multiplexed pilot data. A modulated signal is received (FIG. 7) and processed to provide received samples, which are then further processed to provide pilot symbols. A reference signal is generated based on the available pilot symbols (722a, 722b). The reference signal comprises a sequence of 'predicted' pilot symbols representative of future estimates of one or more characteristics (e.g., the phase and amplitude) of one or more carrier signals used to generate the modulated signal (FIG's 5A-5E). The reference signal can be generated using a number of techniques. For example, the reference signal can be generated by (e.g., linearly) extrapolating pilot symbols from prior time intervals (FIG. 5B), curve fitting the pilot symbols (FIG. 5C), or (normal or ensemble) averaging (unweighted or weighted) pilot symbols (FIG's 5D, 5E). For the W-CDMA standard, the processing to generate the pilot symbols typically includes decovering the received samples with a channelization code to provide channelized symbols (720a, 720b), and multiplying the channelized symbols with a particular pilot symbol pattern. The pilot symbols from each slot may also be filtered to generate one or more filtered pilot symbols.

公开(公告)号：EP2301213A1

公开(公告)日：2011-03-30

申请号：EP09751044.0

申请日：2009-03-24

申请人： QUALCOMM Incorporated

发明人： LIN, Jeremy, H. ,  CHAUDHURI, Arunava ,  CHALLA, Raghu, N. ,  SAMPATH, Hemanth

IPC分类号： H04L27/26 ,  H04L5/00

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.

公开(公告)号：EP2272006A2

公开(公告)日：2011-01-12

申请号：EP09725763.8

申请日：2009-03-23

申请人： QUALCOMM Incorporated

发明人： SAMPATH, Hemanth ,  ZHANG, Xin ,  LIN, Jeremy, H. ,  SHARMA, Nistha ,  PALANKI, Ravi ,  KANDUKURI NARAYANA, Sunil Kumar

IPC分类号： 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.

公开(公告)号：EP2260625A1

公开(公告)日：2010-12-15

申请号：EP09727787.5

申请日：2009-03-23

申请人： QUALCOMM Incorporated

发明人： SAMPATH, Hemanth ,  LIN, Jeremy, H. ,  KANDUKURI NARAYANA, Sunil Kumar ,  VERMANI, Sameer

IPC分类号： H04L27/26 ,  H04J3/06

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.

公开(公告)号：EP2277345B1

公开(公告)日：2011-09-28

申请号：EP09728549.8

申请日：2009-03-20

申请人： QUALCOMM Incorporated

发明人： SAMPATH, Hemanth ,  PALANKI, Ravi ,  LIN, Jeremy, H. ,  KADOUS, Tamer, A.

IPC分类号： H04W52/02

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： 提出了一种用于补偿在休眠时间期间发生的接入终端中的漂移的方法和设备。 该方法包括确定睡眠时间是否超过阈值，缓冲包含采集导频和寻呼信道的时域样本，在缓冲样本之后关闭接入终端中的RF电路，处理样本以补偿漂移，以及确定接入终端 根据处理过的样品进行分页。 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 该存储器还包括用于执行该方法的指令。

公开(公告)号：EP2279596A2

公开(公告)日：2011-02-02

申请号：EP09726398.2

申请日：2009-03-24

申请人： QUALCOMM Incorporated

发明人： SAMPATH, Hemanth ,  AGRAWAL, Avneesh ,  LIN, Jeremy, H.

IPC分类号： H04L25/06 ,  H03M13/45

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.

公开(公告)号：EP2277345A1

公开(公告)日：2011-01-26

申请号：EP09728549.8

申请日：2009-03-20

申请人： QUALCOMM Incorporated

发明人： SAMPATH, Hemanth ,  PALANKI, Ravi ,  LIN, Jeremy, H. ,  KADOUS, Tamer, A.

IPC分类号： H04W52/02

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： 提出了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。