公开(公告)号：HK1052595B

公开(公告)日：2005-09-09

申请号：HK03104854

申请日：2003-07-08

Applicant: QUALCOMM INC

Inventor： GILBERT C SIH ,  IAN FEVRIER ,  INYUP KANG ,  CHRISTOPHER PATRICK

IPC: H04B20060101 ,  G06F17/15 ,  H04B1/7093 ,  H04B7/26

公开(公告)号：HK1066929A1

公开(公告)日：2005-04-01

申请号：HK04109625

申请日：2004-12-06

Applicant: QUALCOMM INC

Inventor： CHRISTOPHER PATRICK ,  YOUNIS SAED G

IPC: H03L20060101 ,  H03L7/06 ,  H03J7/04 ,  H04B1/16

Abstract: The frequency error of an oscillator is minimized by characterizing the operating environment of the oscillator. An electronic device monitors parameters that are determined to have an effect on the frequency accuracy of the internal frequency source. Temperature is one parameter known to have an effect on the frequency of the internal frequency source and a primary contributor to device temperature is the RF Power Amplifier (PA). The electronic device collects and stores the activity level of the PA. The effective PA duty cycle over a predetermined period of time is calculated. The LO operating environment is stabilized by operating the PA at the calculated duty cycle when the LO is required to operate in a high stability mode.

公开(公告)号：HK1061277A1

公开(公告)日：2004-09-10

申请号：HK04104297

申请日：2004-06-15

Applicant: QUALCOMM INC

Inventor： MESSAY AMERGA ,  CHRISTOPHER PATRICK ,  ROLAND RICK ,  DOUGLAS ROWITCH ,  SAED YOUNIS

IPC: G01S1/00 ,  G01S19/25 ,  H04B20060101 ,  H04B7/26 ,  H04W64/00

Abstract: Techniques to detect whether or not a remote terminal is under the coverage of a repeater within a wireless communication network, which may be based on (1) a list of base stations expected to be received while under the repeater's coverage, (2) the characterized environment of the repeater, and/or (3) the propagation delays for a transmission received at the remote terminal. Additional ambiguity resulting from being under a repeater's coverage may also be accounted for and/or compensated by (1) discarding time measurements from repeated base stations, (2) adjusting the processing for position estimation to account for the additional ambiguity due to the repeater, (3) computing a series of position estimates based on multiple transmissions received from the same originating base station and selecting the best estimate, and/or (4) computing a series of position estimates based on multiple transmissions from multiple originating base stations and selecting the best estimate.