公开(公告)号：ID28458A

公开(公告)日：2001-05-24

申请号：ID20010800

申请日：1999-09-03

Applicant: QUALCOMM INC

Inventor： GARDNER WILLIAM ,  AGRAWAL AVNEESH ,  SIH GILBERT C ,  ZOU QIUZHEN ,  KANG INYUP

IPC: G01S19/30 ,  G01S1/00 ,  G01S5/00 ,  G01S5/14 ,  G01S19/23 ,  G01S19/24 ,  G01S19/25 ,  G01S19/29 ,  G01S19/37 ,  H04Q7/34 ,  H04Q7/38 ,  G01S1/04

Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment comprises a method for performing position location in a wireless communication system using a set of signals transmitted from a set of satellites including the steps of receiving signal samples, rotating an acquisition code by a first rotation amount yielding a rotated acquisition code, despreading said signal samples using rotated acquisition code yielding despread data, accumulating said despread data over a first duration yielding partially accumulated data, rotating said partially accumulated data by a second rotation amount yielding rotated data and accumulating said rotated data.

公开(公告)号：FI20010417A

公开(公告)日：2001-03-02

申请号：FI20010417

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： KANG INYUP ,  SIH GILBERT C ,  ZOU QIUZHEN

IPC: G01S5/00 ,  G01S19/23 ,  G01S19/25 ,  G01S19/29 ,  G01S19/30 ,  H04Q7/34 ,  G01S

Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location comprising the steps of receiving signal samples, generating a coarse acquisition sequence, rotating the coarse acquisition sequence yielding a rotated coarse acquisition sequence, and applying the rotated coarse acquisition sequence to the signal samples at a set of time offsets yielding correlated output data.

公开(公告)号：CA2368982A1

公开(公告)日：2000-10-05

申请号：CA2368982

申请日：2000-03-30

Applicant: QUALCOMM INC

Inventor： ZOU QIUZHEN ,  AGRAWAL AVNEESH

IPC: H04B1/7093 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/707

Abstract: A novel and improved method and apparatus for searching is described. Channe l data is despread utilizing a matched filter structure. The in-phase and quadrature amplitudes of the despreading (410) delivered to coherent accumulators (430, 432) to sum for a programmable duration of time. The amplitude accumulations are squared and summed (440) to produce an energy measurement. The energy measurement is accumulated for a second programmable time to perform non-coherent accumulation (450). The resulting value is used to determine the likelihood of a pilot signal at that offset. Each matched filter structure comprises an N-value shift register for receiving data, a programmable bank of taps to perform despreading and optional Walsh decovering, and an adder structure to sum the resulting filter tap calculations.

公开(公告)号：AU5809599A

公开(公告)日：2000-03-27

申请号：AU5809599

申请日：1999-09-02

Applicant: QUALCOMM INC

Inventor： GLAZKO SERGUEI A ,  SIH GILBERT C ,  ZOU QIUZHEN

IPC: G01C21/00 ,  G01S1/04 ,  G01S19/23 ,  G01S19/25 ,  G01S19/30 ,  H04Q7/34 ,  G01S5/10 ,  H04B7/216

Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location including the steps of receiving a set of higher resolution sample data at a resolution interval, accumulating said higher resolution sample data over a chip interval yielding accumulation sums, and correlating said accumulation sums with a correlation code at a set of offsets which are separated by said resolution interval.

公开(公告)号：CA2726149C

公开(公告)日：2013-06-25

申请号：CA2726149

申请日：2001-12-14

Applicant: QUALCOMM INC

Inventor： ZOU QIUZHEN ,  WILEY GEORGE A ,  STEELE BRIAN

IPC: H04L29/06 ,  H04N7/08 ,  H04J3/06 ,  H04L20060101 ,  H04L12/56 ,  H04L12/64 ,  H04L29/00 ,  H04L29/08 ,  H04L29/10 ,  H04M1/725 ,  H04N7/081 ,  H04N21/643 ,  H04W80/00

Abstract: A data Interface for transferring digital data between a host and a client over a communication path using packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signal protocol is used by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, with at least one residing in the host device and being coupled to the client through the communications path. The interface provides a cost-effective, low power, bi-directional, high-speed data transfer mechanism over a short-range 'serial' type data link, which lends itself to implementation with miniature connectors and thin flexible cables which are especially useful in connecting display elements such as wearable micro-displays to portable computers and wireless communication devices.

公开(公告)号：CA2472522C

公开(公告)日：2012-03-27

申请号：CA2472522

申请日：2003-01-03

Applicant: QUALCOMM INC

Inventor： POON WANG PAUL ,  ZOU QIUZHEN

IPC: H04B1/7083 ,  G01S1/00 ,  G01S19/24 ,  G01S19/25 ,  G01S19/30 ,  G01S19/34 ,  G01S19/37 ,  H04B1/7075 ,  H04B1/708 ,  H04Q7/38

Abstract: Searcher hardware is multiplexed to perform simultaneous searches in either an IS-95 CDMA mode or a GPS mode. In the IS-95 mode, the search hardware is time-multiplexed into a number of searcher time slices, each of which can generate a PN sequence to despread a data sequence. In the GPS mode, the search hardware is configured as a number of distinct GPS channels, each of which can generate a Gold code sequence for tracking a GPS signal from a particular GPS satellite. This configuration allows the searcher to perform multiple GPS signal searches simultaneously. Signal searching in both IS-95 and GPS modes is performed at significantly higher speeds compared to conventional searcher hardware. Moreover, the search hardware can be dynamically configured to operate in either the IS-95 or the GPS mode, eliminating the need for dedicated circuitry for each mode of operation.

公开(公告)号：AU2002227359B2

公开(公告)日：2006-12-07

申请号：AU2002227359

申请日：2001-12-14

Applicant: QUALCOMM INC

Inventor： WILEY GEORGE A ,  ZOU QIUZHEN ,  STEELE BRIAN

IPC: H04N7/08 ,  H04J3/06 ,  H04L20060101 ,  H04L12/56 ,  H04L12/64 ,  H04L29/00 ,  H04L29/08 ,  H04M1/725 ,  H04N7/081

Abstract: A data Interface for transferring digital data between a host and a client over a communication path using packet structures linked together to form a communication protocol for communicating a pre-selected set of digital control and presentation data. The signal protocol is used by link controllers configured to generate, transmit, and receive packets forming the communications protocol, and to form digital data into one or more types of data packets, with at least one residing in the host device and being coupled to the client through the communications path. The interface provides a cost-effective, low power, bi-directional, high-speed data transfer mechanism over a short-range "serial" type data link, which lends itself to implementation with miniature connectors and thin flexible cables which are especially useful in connecting display elements such as wearable micro-displays to portable computers and wireless communication devices.

公开(公告)号：CA2343218C

公开(公告)日：2006-01-03

申请号：CA2343218

申请日：1999-09-03

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  GARDNER WILLIAM ,  ZOU QIUZHEN ,  SIH GILBERT C ,  KANG INYUP

IPC: G01S19/30 ,  G01S1/00 ,  G01S1/04 ,  G01S5/00 ,  G01S5/14 ,  G01S19/23 ,  G01S19/24 ,  G01S19/25 ,  G01S19/29 ,  G01S19/37 ,  H04Q7/32 ,  H04Q7/34 ,  H04Q7/36 ,  H04Q7/38

Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment comprises a method for performing position location i n a wireless communication system using a set of signals transmitted from a set of satellites including the steps of receiving signal samples, rotating an acquisition code by a first rotation amount yielding a rotated acquisition code, despreading said signal samples using rotated acquisition code yielding despread data, accumulating said despread data over a first duration yielding partially accumulated data , rotating said partially accumulated data by a second rotation amount yielding rotated data and accumulating said rotated data.

公开(公告)号：DE69919729T2

公开(公告)日：2005-09-29

申请号：DE69919729

申请日：1999-09-03

Applicant: QUALCOMM INC

Inventor： KANG INYUP ,  SIH C ,  ZOU QIUZHEN

IPC: G01S5/00 ,  G01S19/23 ,  G01S19/25 ,  G01S19/29 ,  G01S19/30 ,  H04Q7/34 ,  G01S5/14

Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location comprising the steps of receiving signal samples, generating a coarse acquisition sequence, rotating the coarse acquisition sequence yielding a rotated coarse acquisition sequence, and applying the rotated coarse acquisition sequence to the signal samples at a set of time offsets yielding correlated output data.

公开(公告)号：FI114742B

公开(公告)日：2004-12-15

申请号：FI20010421

申请日：2001-03-02

Applicant: QUALCOMM INC

Inventor： ZOU QIUZHEN ,  SIH GILBERT C

IPC: G01S19/03 ,  G01S1/00 ,  G01S19/48 ,  H04Q7/34 ,  G01S5/14

Abstract: The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method of performing position location in a wireless subscriber unit having a local oscillator, including the steps of receiving a position location request, acquiring a timing signal when a sufficient period of time has elapsed since the local oscillator has been corrected and correcting said local oscillator using a correction signal based on said timing signal, substantially freezing the correction signal, performing a position location procedure using the local oscillator with the correction signal applied, and ending said position location procedure.