Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2005-07-19
2005-07-19
Pham, Chi (Department: 2667)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
Reexamination Certificate
active
06920155
ABSTRACT:
A circuit for measuring and compensating for propagation delays in a communication system is described. In communication systems such as wireless networks a number of base stations operate within cells to provide wide area coverage. In such systems a base station controller will communicate with each base station to provide certain information including a synchronizing time stamp. When the distance between the base station controller and each of the individual base stations is not a constant a propagation delay introduced by this distance differential will mean that the time stamp transmitted from the base station controller will not reach all the base stations at the same time. This invention relates to a system and method of measuring respective propagation delays and for introducing a compensating value.
REFERENCES:
patent: 4807259 (1989-02-01), Yamanaka et al.
patent: 5404575 (1995-04-01), Lehto
patent: 5809093 (1998-09-01), Cooper
patent: 6014376 (2000-01-01), Abreu et al.
patent: 6430241 (2002-08-01), Rupprecht et al.
patent: 6452946 (2002-09-01), Manzardo
patent: 6483825 (2002-11-01), Seta
patent: 6647246 (2003-11-01), Lu
patent: 2002/0012362 (2002-01-01), Yahata et al.
patent: 0634851 (1995-01-01), None
patent: 0634851 (1995-01-01), None
patent: 2 321 829 (1998-08-01), None
patent: WO 99/33207 (1999-07-01), None
patent: WO 01/10154 (2001-02-01), None
Mouly, M., Pautet, M-B.; The GMS System for Mobile Communications; 1992; pp 268-281; Cell & Sys; Palaiseau, FRANCE.
Ariyavisitakul, S. et al; Network Synchronisation of Radio Ports in Wireless Personal Communications; Electronics Letters; Dec. 3, 1992; pp. 2312-2314; vol. 28, No. 25; IEE Stevenage, GB.
Mccrady, D. et al; Mobile Ranging with Low Accuracy Clocks; Radio and Wireless Conference, 1999, RAWCON 99, 1999 IEEE, Denver, Colorado—Aug. 1-4, 1999, IEEE, Piscataway, New Jersey—Aug. 1, 1999; pp. 85-88.
Laubscher, Jr. Lawrence E.
Ly Anh-Vu
Pham Chi
Zarlink Semiconductor Inc.
LandOfFree
Embedded loop delay compensation circuit for multi-channel... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Embedded loop delay compensation circuit for multi-channel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Embedded loop delay compensation circuit for multi-channel... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3399746