公开(公告)号：AU2002246930A1

公开(公告)日：2002-08-06

申请号：AU2002246930

申请日：2002-01-04

Applicant: QUALCOMM INC

Inventor： EKVETCHAVIT THUNYACHATE ,  VEDAM MARUTHY ,  KANG INYUP

IPC: H03H17/02 ,  H03H17/04 ,  H04J1/02 ,  H04L5/02 ,  H04L5/06 ,  H04L25/03 ,  H04L27/26

Abstract: A multi-carrier filter for a wireless communications system employing a multi-carrier signal. The multi-carrier filter includes a first mechanism for receiving the multi-carrier signal and extracting carrier signal components of the multi-carrier signal in response thereto. A second mechanism filters the carrier signal components and outputs a demodulated and filtered multi-bandwidth signal in response thereto. In the specific embodiment, the first mechanism includes a rotator. The multi-carrier signal is a 3x bandwidth multi-carrier signal having three carrier components. The three carrier components include a center carrier, a left carrier, and a right carrier. The center carrier, the left carrier, and the right carrier are separated by approximately 1.25 MHz. The rotator is a lookup table rotator that includes a mechanism for selectively rotating the multi-carrier-signal clockwise or counter clockwise and outputting the left carrier or the right carrier, respectively, in response thereto.

公开(公告)号：WO02060114A2

公开(公告)日：2002-08-01

申请号：PCT/US0200089

申请日：2002-01-04

Applicant: QUALCOMM INC

Inventor： EKVETCHAVIT THUNYACHATE ,  VEDAM MARUTHY ,  KANG INYUP

IPC: H03H17/02 ,  H03H17/04 ,  H04J1/02 ,  H04L5/02 ,  H04L5/06 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04L27/2601 ,  H04L5/026 ,  H04L5/06 ,  H04L25/03159 ,  H04L25/03343 ,  H04L2025/03414

Abstract: A multi-carrier filter for a wireless communications system employing a multi-carrier signal. The multi-carrier filter includes a first mechanism for receiving the multi-carrier signal and extracting carrier signal components of the multi-carrier signal in response thereto. A second mechanism filters the carrier signal components and outputs a demodulated and filtered multi-bandwidth signal in response thereto. In the specific embodiment, the first mechanism includes a rotator. The multi-carrier signal is a 3x bandwidth multi-carrier signal having three carrier components. The three carrier components include a center carrier, a left carrier, and a right carrier. The center carrier, the left carrier, and the right carrier are separated by approximately 1.25 MHz. The rotator is a lookup table rotator that includes a mechanism for selectively rotating the multi-carrier-signal clockwise or counter clockwise and outputting the left carrier or the right carrier, respectively, in response thereto.

Abstract translation: 一种用于采用多载波信号的无线通信系统的多载波滤波器。 多载波滤波器包括用于接收多载波信号并且响应于此提取多载波信号的载波信号分量的第一机制。 第二机制对载波信号分量进行滤波并响应于此输出解调和滤波的多带宽信号。 在具体实施例中，第一机构包括转子。 多载波信号是具有三个载波分量的3×带宽多载波信号。 三个载体部件包括中心载体，左载体和右载体。 中心载波，左载波和右载波分离约1.25 MHz。 旋转器是一种查阅表旋转器，其包括用于分别顺序地或逆时针地选择性地旋转多载波信号并且分别输出左载波或右载波的机构。

公开(公告)号：WO2004043128A3

公开(公告)日：2005-02-03

申请号：PCT/US0334502

申请日：2003-10-29

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY A ,  HUTCHISON JAMES A ,  BLACK PETER J ,  TURNER SIMON ,  EKVETCHAVIT THUNYACHATE

IPC: H04L12/28 ,  H04W48/18 ,  H04W88/06 ,  H04Q7/38

CPC classification number: H04W48/18 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1224

Abstract: Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a "ping-pong" manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.

Abstract translation: 有效地尝试采集分组数据系统（例如，IS-856系统）的技术。 如果终端已经在语音/数据系统（例如，IS-2000系统）中获取了一个或多个信道，则它可以尝试在分组数据系统中与所获取的信道在与语音/ 数据系统 可以使用多个采集模式，并且可以一次使用一个采集模式来执行同位置信道上的持续采集尝试，以便降低功耗。 收购尝试可以以“乒乓”方式进行，以提高获取的可能性。 对于乒乓搜索，在对每个剩余通道进行获取尝试之前，在最近获取的通道上进行采集尝试。 也可以对所选择的信道获得接收的信号强度估计，并且可以用于确定是否尝试在这些信道上进行采集。

公开(公告)号：WO2004077687A3

公开(公告)日：2005-01-27

申请号：PCT/US2004005542

申请日：2004-02-24

Applicant: QUALCOMM INC ,  NEUFELD ARTHUR JAMES ,  JOSHI ABHAY ARVIND ,  ANDRUS DON NIELSEN ,  GURSKI REMI JONATHAN ,  EKVETCHAVIT THUNYACHATE

Inventor： NEUFELD ARTHUR JAMES ,  JOSHI ABHAY ARVIND ,  ANDRUS DON NIELSEN ,  GURSKI REMI JONATHAN ,  EKVETCHAVIT THUNYACHATE

IPC: H04W28/06 ,  H04W36/38 ,  H04W48/12 ,  H04W52/02 ,  H04W76/04 ,  H04Q7/38

CPC classification number: H04W36/30 ,  H04W48/12 ,  H04W52/0216 ,  H04W76/04 ,  Y02D70/00 ,  Y02D70/1242

Abstract: A novel and improved method and apparatus provide for controlling an operation of an access terminal while processing a signal from an access point in a communication system. Various aspects of the invention provide for an access terminal to disable a handoff process when its demodulator or decoder is operating to demodulate or decode a control message received from an access point. The operation of the access terminal is controlled in a manner that prevents terminating prematurely the demodulation and decoding process of a control signal by a handoff process. As a result, the access terminal may continue operating in a normal wake up/ sleep cycle period while conserving its battery power.

Abstract translation: 一种新颖且改进的方法和装置提供用于在处理来自通信系统中的接入点的信号的同时控制接入终端的操作。 本发明的各个方面提供一种接入终端，当其解调器或解码器正在操作以解调或解码从接入点接收的控制消息时，禁用切换过程。 控制接入终端的操作，以防止通过切换过程过早地终止控制信号的解调和解码处理。 结果，接入终端可以在正常的唤醒/睡眠周期期间继续工作，同时节省其电池电量。

公开(公告)号：WO2004054142A3

公开(公告)日：2004-09-16

申请号：PCT/US0338802

申请日：2003-12-04

Applicant: QUALCOMM INC

Inventor： JOSHI ABHAY A ,  NEUFELD ARTHUR J ,  YOON STEVEN ,  EKVETCHAVIT THUNYACHATE

IPC: H04W48/20 ,  H04W52/02 ,  H04B1/707

CPC classification number: H04W48/20 ,  H04W52/0225 ,  H04W52/0245 ,  Y02D70/00

Abstract: A wireless mobile telephone (400) is operated so as to manage the performance of "off-frequency searches," that is, searches for base station pilot signals that differ in frequency from the pilot signals in the mobile station's active set. Whenever frequency searching is performed (such as responsive to emerging from a reduced-power sleep mode), the mobile station performs on-frequency pilot signal searching (902) upon a prescribed active set frequency. Only if a prescribed off-frequency searching condition (903-908) is satisfied, the mobile station additionally performs off-frequency pilot signal searching (912) upon one or more neighboring base stations' frequencies.

Abstract translation: 操作无线移动电话（400）以管理“非频率搜索”的性能，即，搜索与移动台的活动集中的导频信号不同的基站导频信号。 无论何时执行频率搜索（例如响应于从低功耗睡眠模式出来），移动台根据规定的活动设定频率执行频率导频信号搜索（902）。 只有满足规定的偏频搜索条件（903-908）时，移动台在一个或多个相邻基站的频率上附加地执行非频率导频信号搜索（912）。

公开(公告)号：WO0197400A3

公开(公告)日：2002-03-28

申请号：PCT/US0119403

申请日：2001-06-14

Applicant: QUALCOMM INC

Inventor： ROWITCH DOUGLAS NEAL ,  LEE WAY-SHING ,  EKVETCHAVIT THUNYACHATE

IPC: H04B1/7075 ,  H04B1/708 ,  H04B1/709 ,  H04B7/06 ,  H04J13/00 ,  H04B1/707

CPC classification number: H04B1/70751 ,  H04B1/70752 ,  H04B1/708 ,  H04B1/709 ,  H04B7/0613 ,  H04J13/004

Abstract: Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered "half-symbols" and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the lenght (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodualted symbols. One or more correlators can be assigned to process one or more instances of each transmiteed signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being prcessed by that correlator.

Abstract translation: 用于在无线通信系统中处理接收到的信号的解调器架构。 解调器包括耦合到组合器的多个相关器。 每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。 每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。 使用具有用于覆盖所发送的信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。 组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。 可以分配一个或多个相关器来处理每个透过信号的一个或多个实例。 在每个分配的相关器内使用的导频估计是基于被该相关器加权的信号实例来生成的。