公开(公告)号：WO2002093769A1

公开(公告)日：2002-11-21

申请号：PCT/US2002/015292

申请日：2002-05-14

Applicant: QUALCOMM INCORPORATED

Inventor： TERASAWA, Daisuke ,  AGRAWAL, Avneesh ,  VENKATESAN, Sivarama

IPC: H04B1/707

CPC classification number: H04B1/7075 ,  H04J13/0022 ,  H04J13/10

Abstract: Techniques for fast-slewing of multi-sequence based PN generators are disclosed. In one aspect, LFSR states and reference counter states are loaded into their corresponding components such that consistency among the states is maintained. In another aspect, various methods for determining LFSR states and counter values in response to a desired offset in a unique code are disclosed. Among these methods are matrix-multiplication of LFSR states and generation of advanced LFSR states through masking techniques. Other methods are also presented. These aspects have the benefit of decreasing slew time in an efficient manner, which translates to increased acquisition speed, faster finger lock on multi-path signals, increased data throughput, decreased power, and improved overall system capacity.

Abstract translation: 公开了用于快速回转多序列PN发生器的技术。 在一个方面，LFSR状态和引用计数器状态被加载到它们相应的组件中，使得维持状态之间的一致性。 在另一方面，公开了用于响应于唯一码中的期望偏移来确定LFSR状态和计数值的各种方法。 在这些方法中，LFSR状态的矩阵乘法和通过掩蔽技术生成高级LFSR状态。 还介绍了其他方法。 这些方面有利于以有效的方式减少转换时间，这转化为增加的采集速度，更快的手指锁定多路径信号，增加的数据吞吐量，降低的功率以及改进的整体系统容量。

公开(公告)号：WO2014011948A1

公开(公告)日：2014-01-16

申请号：PCT/US2013/050181

申请日：2013-07-12

Applicant: QUALCOMM INCORPORATED

Inventor： GOHARI, Amir Aminzadeh ,  MAHESHWARI, Shailesh ,  URGAONKAR, Sandeep ,  MITRA, Alok ,  RUMI, Mohammed M. ,  KUMAR, Vaibhav ,  BABBAR, Uppinder Singh ,  KLINGENBRUNN, Thomas ,  NGUYEN, Bao Vinh ,  KOHLENZ, Mathias ,  SHEORAN, Gautam ,  TERASAWA, Daisuke ,  FINLAY, Iain

IPC: H04L1/00

CPC classification number: H04W24/02 ,  H04L1/0052 ,  H04L1/0061

Abstract: Aspects of the present disclosure provide methods and apparatus for offloading checksum processing in a user equipment (UE) (e.g., from an application processor to a modem processor). Such offloading may speed up packet processing, increase data rate, and/or free up resources of the application processor for other tasks.

Abstract translation: 本公开的方面提供了用于在用户设备（UE）（例如，从应用处理器到调制解调器处理器）中卸载校验和处理的方法和装置。 这种卸载可以加速数据包处理，提高数据速率，和/或释放应用处理器的资源以用于其他任务。

公开(公告)号：WO2003005610A1

公开(公告)日：2003-01-16

申请号：PCT/US2002/021156

申请日：2002-07-02

Applicant: QUALCOMM INCORPORATED

Inventor： TERASAWA, Daisuke ,  AGRAWAL, Avneesh

IPC: H04B7/26

CPC classification number: H04W56/0015 ,  H04B7/2668 ,  H04W56/009

Abstract: A wideband code division multiple access system supports asynchronous operation, with each base station having its own time reference. Substantial benefits may be realized by operating the WCDMA system in a quasi-synchronous mode, in which the base stations broadcast the relative time difference between their time references and the time references of their neighbor bases stations. The WCDMA system supports techniques for measuring the relative time difference.

Abstract translation: 宽带码分多址系统支持异步操作，每个基站具有其自己的时间参考。 可以通过以准同步模式操作WCDMA系统来实现显着的益处，其中基站广播其时间参考与其邻近基站的时间参考之间的相对时间差。 WCDMA系统支持测量相对时差的技术。

公开(公告)号：WO2004021585A2

公开(公告)日：2004-03-11

申请号：PCT/US2003/027269

申请日：2003-08-29

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew ,  SHIU, Da-shan ,  PATTERSON, David M. ,  SUBRAHMANYA, Parvathanathan ,  TERASAWA, Daisuke

IPC: H04B1/00

CPC classification number: H04B1/70754

Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.

Abstract translation: 使用关于移动终端相对于基站的位置的信息的方法和装置可以提高通信系统的性能。 另外，可以使用关于移动终端相对于基站的速度的信息来改善通信系统的性能。 可以使用位置信息来估计用于处理通信信号的标称PN偏移和要使用的一组PN偏移。 速度信息可以用于估计通信信号的标称频率。

公开(公告)号：WO2003073779A1

公开(公告)日：2003-09-04

申请号：PCT/US2001/027624

申请日：2001-09-05

Applicant: QUALCOMM INCORPORATED

Inventor： SHIU, Da-Shan ,  AGRAWAL, Avneesh ,  TERASAWA, Daisuke

IPC: H04Q7/30

CPC classification number: H04W28/18 ,  H04B7/2628

Abstract: Techniques for processing transmissions in a communications (e.g., CDMA) system (100). Samples are received (610) and assembled into one or more traffics (612) with each traffic including one or more portions (e.g., radio frames, coded blocks) suitable for processing independently. The priority of each portion is determined based on its processing delays requirement, which can be estimated based on, for example, the time interval over which the samples in the traffic are interleaved, the processing deadline, and so on. A portion in a traffic having the highest priority is selected and scheduled for processing (624, 720). The processing (630) can include reordering the samples in the selected portion in accordance with a particular reordering scheme, accumulating redundant samples and inserting place holders (e.g., don't cares ) for deleted samples in the selected portion, and decoding the reordered samples in the selected portion. The processing of the traffic may be interrupted, in which case the state information related to the processing of the interrupted traffic is saved. A portion in another traffic can then be selected and scheduled for processing. Thereafter, the processing on the interrupted traffic can be resumed using the saved state information.

Abstract translation: 用于处理通信（例如，CDMA）系统（100）中的传输的技术。 接收样本（610）并组装成一个或多个业务（612），每个业务包括适于独立处理的一个或多个部分（例如，无线电帧，编码块）。 每个部分的优先级基于其处理延迟要求来确定，该处理延迟要求可以基于例如业务中的样本交错的时间间隔，处理期限等来估计。 具有最高优先级的业务中的部分被选择并被调度用于处理（624,720）。 处理（630）可以包括根据特定的重排序方案重新排序所选部分中的样本，累积冗余样本并插入所选部分中被删除样本的占位符（例如，不关心），并对重新排序的样本进行解码 在所选择的部分。 流量的处理可能被中断，在这种情况下，与处理中断流量相关的状态信息被保存。 然后可以选择和调度另一个业务中的一部分进行处理。 此后，可以使用保存的状态信息恢复对中断业务的处理。

公开(公告)号：WO2003026147A2

公开(公告)日：2003-03-27

申请号：PCT/US2002/030001

申请日：2002-09-19

Applicant: QUALCOMM INCORPORATED

Inventor： RAO, Subramanya, P. ,  VENKATESAN, Sivarama ,  GHO, Gwang-Hyun ,  AGRAWAL, Avneesh ,  TERASAWA, Daisuke

IPC: H04B1/00

CPC classification number: H04B1/7077 ,  H04B1/70735 ,  H04B1/70752 ,  H04B1/7083 ,  H04B1/709 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70707

Abstract: Techniques for searching in asynchronous systems are disclosed. In one aspect, a plurality of codes, such as SSCs, are correlated with a received signal at a plurality of offsets to produce a code/slot energy corresponding to each code/slot boundary pair. Unique subsets of the code/slot energies are summed to produce code sequence energies, the maximum of which indicates a located code sequence and slot boundary. In another aspect, the correlation is performed by sub-correlating the received signal with a common sequence, and performing a Fast Hadamard Transform (FHT) on the results. In yet another aspect, one sub-correlator can be used to search a plurality of peaks simultaneously. Various other aspects of the invention are also presented. These aspects collectively 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.

Abstract translation: 公开了在异步系统中搜索的技术。 在一个方面，诸如SSC的多个代码与多个偏移处的接收信号相关，以产生对应于每个代码/时隙边界对的代码/时隙能量。 代码/时隙能量的独特子集被相加以产生代码序列能量，其最大值表示定位的代码序列和时隙边界。 在另一方面，通过将接收到的信号与公共序列进行子相关，并对结果进行快速哈达马（Fad Hadamard）变换（FHT）来执行相关性。 在另一方面，可以使用一个子相关器同时搜索多个峰值。 还提出了本发明的各种其它方面。 这些方面共同具有电路面积和搜索时间效率的优点，其转化为降低的成本，增加的待机时间，增加的采集速度，更高质量的信号传输，增加的数据吞吐量，降低的功率以及改善的整体系统容量。

公开(公告)号：WO2002098036A2

公开(公告)日：2002-12-05

申请号：PCT/US2002/017040

申请日：2002-05-31

Applicant: QUALCOMM INCORPORATED

Inventor： KATSURI, Nitin ,  DHAWAN, Rajat, Rajinderkumar ,  TERASAWA, Daisuke ,  AGRAWAL, Avneesh ,  SUTIVONG, Arak

IPC: H04J13/04

CPC classification number: H04L1/0071 ,  H04J13/00 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/08

Abstract: Techniques for efficient W-CDMA modulation are disclosed. In one aspect, a multiplexing/coding chain for use in modulation such as that defined by the W-CDMA specification is disclosed. In another aspect, transport blocks are processed and concatenated, utilizing memory efficiently. This aspect has the further benefit of preparing transport channels for efficient subsequent processing. It also allows for ease of interface with the transport channel source. In another aspect, the use of repeated channel coding is used in lieu of an interleaver memory to provide channel coding and interleaving. These aspects, collectively, yield the advanced benefits of a system, such as W-CDMA, in a hardware efficient manner. The techniques described herein apply equally to both access points and access terminals. The techniques are not limited to W-CDMA systems; they are quite suitable to other systems requiring the various benefits the invention offers. Various other aspects of the invention are also presented.

Abstract translation: 公开了用于高效W-CDMA调制的技术。 在一方面，公开了一种用于诸如由W-CDMA规范定义的调制的复用/编码链。 在另一方面，传输块被有效地利用存储器来处理和级联。 这方面具有进一步的益处，即准备运输渠道以进行有效的后续处理。 它还允许便于与传输信道源的接口。 在另一方面，使用重复信道编码来代替交织器存储器来提供信道编码和交织。 这些方面集体地以硬件有效的方式产生诸如W-CDMA的系统的先进优点。 本文描述的技术同样适用于接入点和接入终端。 这些技术不限于W-CDMA系统; 它们非常适合于需要本发明提供的各种益处的其它系统。 还提出了本发明的各种其它方面。

公开(公告)号：EP1316161B1

公开(公告)日：2008-07-16

申请号：EP01966606.4

申请日：2001-09-05

Applicant: QUALCOMM INCORPORATED

Inventor： AGRAWAL, Avneesh ,  TERASAWA, Daisuke

IPC: H04B7/26 ,  H04B1/707

CPC classification number: H04J13/0044 ,  H04B7/2628 ,  H04B2201/70705 ,  H04B2201/709709

Abstract: Techniques for recovering data transmitted on a physical channel in which channelization code is not known at the time of the data recovery. A modulated signal is received and processed to provide received samples (612). A hypothesized channelization code (e.g., an OVSF code in the W-CDMA system) is selected (616) and used to process the received samples to generate partially processed symbols (618). The hypothesized channelization code is a 'base' code that can be used to generate all possible channelization codes that may have been used for the physical channel. Intermediate results representative of the partially processed symbols are stored (622) and, upon determination of the actual channelization code (624), further processed (626) in accordance with the actual and hypothesized channelization codes to provide the final results. The additional processing includes partitioning the intermediate results into sets, scaling each intermediate result in a particular set with a scaling factor (+1 or 1) determined by the actual and hypothesized channelization codes, and combining the scaled results in each set to obtain a final result. In the STTD mode in the W-CDMA system, the final results from multiple actual OVSF code intervals can be selectively combine to obtain a recovered symbol (628).

公开(公告)号：EP1105976B1

公开(公告)日：2007-11-28

申请号：EP99941226.5

申请日：1999-08-17

Applicant: QUALCOMM INCORPORATED

Inventor： LUNDBY, Stein, A. ,  TIEDEMANN, Edward, G., Jr. ,  HOLTZMAN, Jack, M. ,  TERASAWA, Daisuke

IPC: H04B1/707 ,  H04B7/005 ,  H04L27/26

CPC classification number: H04B1/707 ,  H04B1/7097 ,  H04B2201/70701 ,  H04B2201/70706 ,  H04B2201/70709 ,  H04W52/30

Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.

Abstract translation: 一种通过发送具有第一高发射功率区域的第一通信信号并发送具有第二高发射功率区域的第二通信信号来限制CDMA通信系统中的峰值发射功率的方法。 第一和第二通信信号是时间偏移，以防止第一和第二高发射功率区域同时发生。 还教导了仅移动第一和第二通信信号的一部分的时移。 第一和第二通信信号还可以包括相应的第一和第二低发射功率区域。 可以选择时间偏移以将第一和第二高发射功率区域中的一个与第一和第二低发射功率区域中的一个对准。 可以确定总发射功率信号并且可以选择时间偏移以使总发射功率信号的峰值电平最小化。 通信信号被分成多个部分，并且第一和第二通信信号的部分被时间偏移以重新排列多个部分的传输顺序。

公开(公告)号：EP1284057B1

公开(公告)日：2007-02-28

申请号：EP01937580.7

申请日：2001-05-18

Applicant: QUALCOMM INCORPORATED

Inventor： TERASAWA, Daisuke ,  GRILLI, Francesco ,  WILLENEGGER, Serge

IPC: H04B7/26 ,  H04J3/06

CPC classification number: H04W56/0065 ,  H04B7/2668 ,  H04W24/08 ,  H04W36/18 ,  H04W56/001

Abstract: A novel and improved method and apparatus, in a WCDMA communication system (100), for informing a mobile station (101) of a downlink data frame time offset by determining the downlink data frame time offset, and transmitting the downlink data frame time offset via an Active Set Update message transmitted from a cell (102 or 103) to mobile station (101). Once an Active Set Update message is received, the data frame time offset information is provided to a timing block (201) which may determine data frame boundary of each downlink signal. Timing block (201) may then adjust the PN sequence timing corresponding to the downlink signal associated with the data frame time offset such that corresponding data symbols in each data frame are correctly soft combined in a combiner (210).