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公开(公告)号：JP2011047946A
公开(公告)日：2011-03-10
申请号：JP2010205257
申请日：2010-09-14
Applicant: Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
CPC classification number: G01S19/258 , G01S19/05
Abstract: PROBLEM TO BE SOLVED: To reduce the time for positioning in a positioning system of GPS base.
SOLUTION: Satellite ephemeris data associated with satellite vehicles is 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 positioning standards.
COPYRIGHT: (C)2011,JPO&INPITAbstract translation: 要解决的问题：减少GPS基座定位系统的定位时间。 解决方案：与卫星车辆相关联的卫星星历数据被选择性地发送到无线通信系统内的移动台。 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，并且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定位标准来实现。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：AU2937401A
公开(公告)日：2001-07-31
申请号：AU2937401
申请日：2001-01-12
Applicant: QUALCOMM INC
Inventor： ABRISHAMKAR FARROKH , ROH MARK
IPC: H04B1/7073 , H04B1/7075 , H04B1/7077 , H04B1/709 , H04B7/26 , H04W68/00 , H04Q7/00
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.
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公开(公告)号：BRPI0411914A
公开(公告)日：2006-09-19
申请号：BRPI0411914
申请日：2004-06-28
Applicant: QUALCOMM INC
Inventor： ROH MARK , RISTIC BORISLAV
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公开(公告)号：BR0107664A
公开(公告)日：2004-11-03
申请号：BR0107664
申请日：2001-01-12
Applicant: QUALCOMM INC
Inventor： ABRISHAMKAR FARROKH , ROH MARK
IPC: H04B1/7073 , H04B1/7075 , H04B1/7077 , H04B1/709 , H04B7/26 , H04W68/00 , H04Q7/00
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.
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公开(公告)号：AU774691B2
公开(公告)日：2004-07-01
申请号：AU3655901
申请日：2001-01-26
Applicant: QUALCOMM INC
Inventor： AGRAWAL AVNEESH , SIH GILBERT , ROH MARK , BUTLER BRIAN , CHALLA RAGHU
IPC: H04B1/712 , H04B1/7073 , H04B1/7087 , H04B1/7115 , H04B1/7117 , H04L27/00 , H04B1/00
Abstract: A method and apparatus for frequency tracking is described. 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 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 and filtered 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 for providing frequency adjustment specific to that finger. The frequency of each finger is adjusted through feedback of the frequency error for that finger.
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Patent Agency Ranking
公开(公告)号：CA2458790A1
公开(公告)日：2003-03-13
申请号：CA2458790
申请日：2002-08-30
Applicant: QUALCOMM INC
Inventor： JOHNSON BRENDON L , ROH MARK , KANG INYUP
IPC: H04B1/00 , H04B1/7075 , H04B1/7117 , H04B1/707
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 a t 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.
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公开(公告)号：AU3655901A
公开(公告)日：2001-08-20
申请号：AU3655901
申请日：2001-01-26
Applicant: QUALCOMM INC
Inventor： AGRAWAL AVNEESH , SIH GILBERT , ROH MARK , BUTLER BRIAN , CHALLA RAGHU
IPC: H04B1/712 , H04B1/7073 , H04B1/7087 , H04B1/7115 , H04B1/7117 , H04L27/00 , H04B1/00
Abstract: A method and apparatus for frequency tracking is described. 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 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 and filtered 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 for providing frequency adjustment specific to that finger. The frequency of each finger is adjusted through feedback of the frequency error for that finger.
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公开(公告)号：HK1054823A1
公开(公告)日：2003-12-12
申请号：HK03106824
申请日：2003-09-23
Applicant: QUALCOMM INC
Inventor： ABRISHAMKAR FARROKH , ROH MARK
IPC: H04B1/7073 , H04B1/7075 , H04B1/7077 , H04B1/709 , H04B7/26 , H04W68/00 , H04B
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.
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公开(公告)号：HK1053201A1
公开(公告)日：2003-10-10
申请号：HK03105374
申请日：2003-07-25
Applicant: QUALCOMM INC
Inventor： AGRAWAL AVNEESH , SIH GILBERT , ROH MARK , BUTLER BRIAN , CHALLA RAGHU
IPC: H04B1/712 , H04B1/7073 , H04B1/7087 , H04B1/7115 , H04B1/7117 , H04L27/00 , H04B , H04L
Abstract: A method and apparatus for frequency tracking is described. 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 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 and filtered 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 for providing frequency adjustment specific to that finger. The frequency of each finger is adjusted through feedback of the frequency error for that finger.
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公开(公告)号：BRPI0411920A
公开(公告)日：2006-08-29
申请号：BRPI0411920
申请日：2004-04-30
Applicant: QUALCOMM INC
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.
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