公开(公告)号：WO2003024146A1

公开(公告)日：2003-03-20

申请号：PCT/US2002/028678

申请日：2002-09-10

Applicant: QUALCOMM INCORPORATED

Inventor： ABRISHAMKAR, Farrokh ,  ROH, Mark

IPC: H04Q7/38

CPC classification number: H04W68/00 ,  H04B1/7075 ,  H04B1/7115 ,  H04B2201/70701 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0245 ,  Y02D70/40

Abstract: A system determines if a primary paging channel should be received based on an examination of a quick paging channel. A first QPCH symbol is examined (102) and the normalized pilot energy is determined (104). If the normalized pilot energy is above a first threshold (106), the symbol is demodulated and the QPCH-symbol-to-pilot-energy ratio is determined (110) and compared against another threshold (114). If the normalized pilot energy is below the first threshold, the system proceeds to the second QPCH symbol immediately. Based on the two comparisons, a second QPCH signal is examined (108) or the system sleeps (116). If the second signal is examined, and if its normalized pilot energy is high enough, it also is demodulated and the ratio of the sum-of-the-combined-QPCH-symbols to the sum-of-the-combined-pilot-energies is determined (122). If this ratio exceeds a threshold (124), the primary paging channel is processed (120); otherwise the system sleeps (116).

Abstract translation: 系统基于快速寻呼信道的检查来确定是否应该接收主寻呼信道。 检查第一QPCH符号（102）并且确定归一化导频能量（104）。 如果归一化的导频能量高于第一阈值（106），则对该符号进行解调，并且确定QPCH符号到导频能量比（110）并与另一个阈值进行比较（114）。 如果归一化的导频能量低于第一阈值，则系统立即进入第二QPCH符号。 基于两个比较，检查第二QPCH信号（108）或系统睡眠（116）。 如果检测到第二信号，并且如果其归一化导频能量足够高，则其也被解调，并且组合QPCH符号之和与组合导频能量之和的比率 确定（122）。 如果该比率超过阈值（124），则处理主寻呼信道（120）; 否则系统睡眠（116）。

公开(公告)号：WO2005006593A1

公开(公告)日：2005-01-20

申请号：PCT/US2004/013201

申请日：2004-04-30

Applicant: QUALCOMM INCORPORATED ,  ROH, Mark ,  ROW, Chang ,  WONG, Jeff

Inventor： ROH, Mark ,  ROW, Chang ,  WONG, Jeff

IPC: H04B7/185

CPC classification number: G01S19/258 ,  G01S19/05

Abstract: Satellite ephemeris data associated with satellite vehicles in a Global Positioning System (GPS) based position location system can be selectively transmitted to a mobile station within a wireless communication system. The mobile station can selectively request satellite ephemeris data from a Position Determination Entity (PDE) that is in communication with one or more GPS satellite vehicles (SV). The mobile station forecasts the satellite vehicles that theoretically are available. Then, the mobile station checks to see if valid ephemeris data is locally stored. If ephemeris data is desired and not locally available, the mobile station transmits a selective ephemeris request to the PDE and receives, in response to the request, the ephemeris corresponding to the SV identified in the ephemeris request. The selective ephemeris request and selective satellite update method can be implemented in accordance with presently available position location standards.

Abstract translation: 可以选择性地将无线通信系统中的移动台发送与基于全球定位系统（GPS）的位置定位系统中的卫星车辆相关的卫星星历数据。 移动台可以从与一个或多个GPS卫星车辆（SV）通信的位置确定实体（PDE）中选择性地请求卫星星历数据。 移动台预测理论上可用的卫星车辆。 然后，移动台检查是否有效的星历数据被本地存储。 如果星历数据是期望的而不是本地可用的，则移动台向PDE发送选择性星历请求，并响应于该请求接收与在星历表中确定的SV相对应的星历表。 选择性星历请求和选择性卫星更新方法可以根据目前可用的位置定位标准来实现。

公开(公告)号：WO2005004502A3

公开(公告)日：2005-01-13

申请号：PCT/US2004/020918

申请日：2004-06-28

Applicant: QUALCOMM Incorporated ,  ROH, Mark ,  RISTIC, Borislav

Inventor： ROH, Mark ,  RISTIC, Borislav

IPC: H04B7/185 ,  H04M11/04 ,  H04Q7/20 ,  H04B1/38 ,  H04M1/00

Abstract: A system for optimizing power use in a wireless communication device includes a selectively activated first timer which has a first level of power consumption and which generates a first time signal with a first level of accuracy. A selectively activated second timer has a second level of power consumption, less than the first level of power consumption, generates a second time signal with a second level of accuracy less than the first level of accuracy. A selectively activated position determination receiver has a third level of power consumption, and receives signals that permit position determination using the received signals and either the first or the second time signal. A selection processor selectively activates either the first or the second timer for use with the position determination receiver to optimize power consumption of the wireless communication device.

公开(公告)号：WO2003021806A1

公开(公告)日：2003-03-13

申请号：PCT/US2002/027723

申请日：2002-08-30

Applicant: QUALCOMM INCORPORATED

Inventor： KANG, Inyup ,  ROH, Mark ,  JOHNSON, Brendon L.

IPC: H04B1/707

CPC classification number: H04B1/70758 ,  H04B1/70757 ,  H04B1/7117

Abstract: In general, the invention facilitates searching for energy peaks in spread spectrum wireless communivation systems with greater precision. More particulary, various embodiments of the invention may involve reporting not only an energy peak and its associated offset, but also the energy levels corresponding to one or more offsets occurring before and after the offset at which the energy peak occurs. Interpolation or extrapolation techniques may be used to predict the actual location of an energy peak based on the apparent location of the peak and the energy levels observed at surrounding offsets.

Abstract translation: 通常，本发明便于更精确地搜索扩频无线通信系统中的能量峰值。 更具体地，本发明的各种实施例可以包括不仅报告能量峰值及其相关联的偏移，还报告对应于发生能量峰值的偏移之前和之后发生的一个或多个偏移的能级。 可以使用插值或外插技术来基于峰值的表观位置和在周围偏移处观察到的能量水平来预测能量峰值的实际位置。

公开(公告)号：EP1639723A1

公开(公告)日：2006-03-29

申请号：EP04750873.4

申请日：2004-04-30

Applicant: QUALCOMM INCORPORATED

Inventor： ROH, Mark ,  ROW, Chang ,  WONG, Jeff

IPC: H04B7/185 ,  G01S5/02

CPC classification number: G01S19/258 ,  G01S19/05

Abstract: Satellite ephemeris data associated with satellite vehicles in a Global Positioning System (GPS) based position location system can be selectively transmitted to a mobile station within a wireless communication system. The mobile station can selectively request satellite ephemeris data from a Position Determination Entity (PDE) that is in communication with one or more GPS satellite vehicles (SV). The mobile station forecasts the satellite vehicles that theoretically are available. Then, the mobile station checks to see if valid ephemeris data is locally stored. If ephemeris data is desired and not locally available, the mobile station transmits a selective ephemeris request to the PDE and receives, in response to the request, the ephemeris corresponding to the SV identified in the ephemeris request. The selective ephemeris request and selective satellite update method can be implemented in accordance with presently available position location standards.

公开(公告)号：EP1250763A2

公开(公告)日：2002-10-23

申请号：EP01908718.8

申请日：2001-01-26

Applicant: QUALCOMM INCORPORATED

Inventor： AGRAWAL, Avneesh ,  SIH, Gilbert ,  ROH, Mark ,  BUTLER, Brian ,  CHALLA, Raghu

IPC: H04B1/00

CPC classification number: H04B1/7087 ,  H04B1/7115 ,  H04B1/7117 ,  H04B2201/70701 ,  H04L27/0014 ,  H04L2027/0032 ,  H04L2027/0057 ,  H04L2027/0087

Abstract: A novel and improved method and apparatus for frequency tracking is described. Two main sources of error that contribute to the frequency difference between locally generated carriers and those used to modulate received signals include frequency offset between the two timing sources and doppler effects due to relative movement between the sources. The present invention provides a tracking mechanism for removing the effects of error due to frequency offset as well as compensation for frequency error due to doppler in a plurality of multipath signals. Each finger (700a..700n) of a RAKE receiver utilizing the present invention will compute a frequency error for that finger. The weighted average of all of these frequency errors is calculated (710) and filtered (720) to provide a control signal for varying the frequency of IF and RF frequency synthesizers, accounting for the common frequency offset seen at each finger. Additionally, each finger is equipped with a rotator (706a...706n) for providing frequency adjustment specific to that finger. The frequency of each finger is adjusted through feedback of the frequency error finger.

公开(公告)号：EP1250763B1

公开(公告)日：2013-05-22

申请号：EP01908718.8

申请日：2001-01-26

Applicant: QUALCOMM INCORPORATED

Inventor： AGRAWAL, Avneesh ,  SIH, Gilbert ,  ROH, Mark ,  BUTLER, Brian ,  CHALLA, Raghu

IPC: H04L27/00 ,  H04B1/7115 ,  H04B1/7087

CPC classification number: H04B1/7087 ,  H04B1/7115 ,  H04B1/7117 ,  H04B2201/70701 ,  H04L27/0014 ,  H04L2027/0032 ,  H04L2027/0057 ,  H04L2027/0087

公开(公告)号：EP1423920A1

公开(公告)日：2004-06-02

申请号：EP02766193.3

申请日：2002-08-30

Applicant: QUALCOMM Incorporated

Inventor： KANG, Inyup ,  ROH, Mark ,  JOHNSON, Brendon L.

IPC: H04B1/707

CPC classification number: H04B1/70758 ,  H04B1/70757 ,  H04B1/7117

Abstract: In general, the invention facilitates searching for energy peaks in spread spectrum wireless communivation systems with greater precision. More particulary, various embodiments of the invention may involve reporting not only an energy peak and its associated offset, but also the energy levels corresponding to one or more offsets occurring before and after the offset at which the energy peak occurs. Interpolation or extrapolation techniques may be used to predict the actual location of an energy peak based on the apparent location of the peak and the energy levels observed at surrounding offsets.

Abstract translation: 公开了一种用于识别用于对接收的CDMA信号进行解扩的扩展码的方法，所述方法包括定义包括用于伪随机噪声（PN）序列的一组偏移量的搜索窗口，其中所述偏移集合处于第一时间分辨率， 比用于解调所接收的CDMA信号的解调器的第二时间分辨率更粗糙; 对于每个偏移，对所接收的CDMA信号应用相应的扩展码以获得信号能级; 报告所获得的信号能级最大的峰值偏移，其中峰值偏移具有第一时间分辨率; 决定是否启用肩模式; 当所述肩模式被启用时，报告与所述峰值偏移之前的偏移相对应的第一肩峰能量水平和对应于所述峰值偏移之后的偏移的第二肩峰能量水平; 并且当肩模式未启用时，不要报告第一肩膀能量水平。

公开(公告)号：EP1639839A2

公开(公告)日：2006-03-29

申请号：EP04756385.3

申请日：2004-06-28

Applicant: QUALCOMM INCORPORATED

Inventor： ROH, Mark ,  RISTIC, Borislav

IPC: H04Q1/00

CPC classification number: H04W52/029 ,  G01S19/34 ,  Y02D70/164

Abstract: A system for optimizing power use in a wireless communication device includes a selectively activated first timer which has a first level of power consumption and which generates a first time signal with a first level of accuracy. A selectively activated second timer has a second level of power consumption, less than the first level of power consumption, generates a second time signal with a second level of accuracy less than the first level of accuracy. A selectively activated position determination receiver has a third level of power consumption, and receives signals that permit position determination using the received signals and either the first or the second time signal. A selection processor selectively activates either the first or the second timer for use with the position determination receiver to optimize power consumption of the wireless communication device.

公开(公告)号：EP1249080A2

公开(公告)日：2002-10-16

申请号：EP01942837.4

申请日：2001-01-12

Applicant: QUALCOMM INCORPORATED

Inventor： ABRISHAMKAR, Farrokh ,  ROH, Mark

IPC: H04B1/707

CPC classification number: H04W68/00 ,  H04B1/70751 ,  H04B1/7077 ,  H04B2201/70702 ,  H04B2201/70707 ,  Y02D70/40

Abstract: A system for facilitating the detection and successful decoding of a quick paging channel adapted for use with a wireless communications system supporting a primary paging channel and a quick paging channel. The system includes a first mechanism for detecting a pilot signal associated with the quick paging channel based on a received signal and includes a coherent integrator of a first length and a noncoherent integrator of a second length. The second mechanism determines receiver operating characteristics of the system based on the pilot signal and a quick paging channel signal associated with the quick paging channel. The third mechanism optimizes the first length and the second length based on the receiver operating characteristics. In a specific embodiment, the first mechanism includes a CDMA receive chain for receiving the received signal and providing a digital received signal in response thereto to a sample Random Access Memory (RAM). The sample RAM includes a mechanism for sampling the digital received signal at predetermined time slots and providing a sampled received signal in response thereto. An interpolator adjusts the rate of the sampled received signal and provides a rate-adjusted signal in response thereto. The first mechanism includes a searcher that includes the first coherent integrator, a second coherent integrator, and the noncoherent integrator. A complex despreader correlates the rate-adjusted received signal with a pseudo noise candidate code and providing a correlation result in response thereto.

Abstract translation: 一种用于促进适于与无线通信系统中支持主寻呼信道和快速寻呼信道使用一个快速寻呼信道的成功检测和解码系统。 该系统包括用于检测与基于接收到的信号中的快速寻呼信道相关联的导频信号的第一机制，并且包括具有第一长度的相干积分器和一个第二长度的非相干积分。 第二种机制bestimmt基于所述导频信号和与所述快速寻呼信道相关联的快速寻呼信道信号的系统的接收器的操作特性。 第三种机制优化了第一长度，并根据所述接收器工作特性的第二长度。 在一个具体的实施方式中，所述第一机构包括一个CDMA接收链，用于接收所接收到的信号和与其到样品随机存取存储器（RAM）提供响应一个数字接收信号。 样品RAM包括用于采样在预定时隙接收到的数字信号，并响应于此提供采样的接收信号的机制。 bestimmt采样的所接收信号的速率的内插器，并响应于此提供的速率调整后的信号。 所述第一机构包括一个搜索器那样具有第一相干积分，第二积分相干和非相干积分。 一个复杂的解扩器与相关联的伪噪声候选码，并且响应于此提供的相关结果的速率调整接收的信号。