US6433739B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for synchronizing base stations using remote synchronizing stations
Assignee: Qualcomm Inc
•
Filing: 1999-10-29
•
Granted: 2002-08-13
•
Expires: 2019-10-29
Abstract
Abstract A method and apparatus for determining any offset between the timing of a communication base station and the timing of a GPS constellation using a remote synchronization station at which the timing of a base station can be measured and compared with known timing to determine an offset.
Inventors
- 👤 Samir S. Soliman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:04
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/0009; G01S5/0045; G01S5/0054; G01S19/00; G01S19/01; G01S19/13; G01S19/23; G01S19/235; G01S19/24; G01S19/25; G01S19/38; G01S19/39; G01S19/42; G01S19/45; G01S19/46; G01S5/009; G01S5/02; G01S5/0205; G01S5/021; G04; G04G; G04G7/00; G04G7/02; H; H04; H04W; H04W64/00; G01S2205/00; G01S2205/001; G01S2205/008; G01S5/0236
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
A remote synchronizing station, including: a) a receiver configured to receive signals from a base station, the time at which signals are transmitted from the base station and the transmission delay being known values; b) a clock, synchronized with clocks present in each of the base stations; c) processing circuitry, coupled to the receiver and to the clock, configured to: i) measure the time of arrival of signals from the base station; ii) calculate the transmission delay as the difference between the time of arrival and the time of transmission of signals transmitted from the base station; and iii) calculate the difference between the calculated transmission delay and the known transmission delay.
Claim 2
Dependent Claim
112 words
A remote synchronizing station, including: a) a receiver configured to receive signals from a base station, the time at which signals are transmitted from the base station and the transmission delay being known values; b) a clock, synchronized with clocks present in each of the base stations; c) processing circuitry, coupled to the receiver and to the clock, configured to: i) measure the time of arrival of signals from the base station; ii) calculate the transmission delay as the difference between the time of arrival and the time of transmission of signals transmitted from the base station; and iii) calculate the difference between the calculated transmission delay and the known transmission delay.
Claim 3
Dependent Claim
32 words
The remote synchronizing station of claim 1 , further including a transmitter, coupled to the processing circuitry and configured to transmitting the calculated difference between the actual delay and the known delay.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-08-12 | 2006-02-11 | 2006-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-08-12 | 2010-02-11 | 2010-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-08-12 | 2014-02-11 | 2014-08-13 | $7700.00 | Window Closed / Lapsed |