Invention Grant
- Patent Title: Time division duplex system utilizing global positioning system timing signals for access point synchronization
-
Application No.: US09948615Application Date: 2001-09-07
-
Publication No.: US07133397B2Publication Date: 2006-11-07
- Inventor: Delon K. Jones , James M. Simkins
- Applicant: Delon K. Jones , James M. Simkins
- Applicant Address: US NY New York
- Assignee: L-3 Communications Corporation
- Current Assignee: L-3 Communications Corporation
- Current Assignee Address: US NY New York
- Agency: Perman & Green, LLP
- Main IPC: H04J3/06
- IPC: H04J3/06

Abstract:
A method and apparatus for Time Division Duplex (TDD) synchronization of Access Points (APEs) uses the 1 pulse-per-second timing pulses of the Global Positioning System (GPS) and synchronization state machines for its Time Division Multiple Access (TDMA) structure. As a result, the present invention obviates the need for expensive voltage-controlled oscillators used by the prior art, and achieves stable timing accuracy within approximately 7.5 minutes, as opposed to the 12 to 24-hour period needed by prior art methods.
Public/Granted literature
Information query