Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2008-05-06
2008-05-06
Pham, Chi (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S516000, C375S371000
Reexamination Certificate
active
07369578
ABSTRACT:
In a method of estimating a bit rate (f1) of a digital signal conveyed through a SONET network between an originating node and a terminating node, the digital signal received by the originating node is processed to determine a result of a first function of the signal bit rate (f1) and a respective Tx local reference frequency (f2) of the originating node. A result of a second function of the Tx local reference frequency (f2) and a respective Rx local reference frequency (f3) of the terminating node is calculated. Finally, a result of a third function of the respective first and second function results is calculated, to derive an estimate of the signal bit rate (f4) relative to the Rx local reference frequency (f3).
REFERENCES:
patent: 5263057 (1993-11-01), Nawrocki et al.
patent: 5337334 (1994-08-01), Molloy
patent: 5436937 (1995-07-01), Brown et al.
patent: 5463351 (1995-10-01), Marko et al.
patent: 6415006 (2002-07-01), Rude
patent: 7023942 (2006-04-01), Roberts et al.
patent: 0 460 835 (1991-12-01), None
patent: WO 03/032540 (2003-04-01), None
Duttweiler D L: “Waiting Time Jitter”, Bell System Technical Journal, American Telephone and Telegraph Co. New York, US, vol. 51, No. 1, 1972, pp. 165-207, XP000608817.
W.D. Grover, et al., “Waiting Time Jitter Reduction by Synchronizer Stuff Threshold Modulation”, Proceedings of IEEE Glovecom, 1987, vol. 1, pp. 514-518.
D.L. Duttweiler, “Waiting Time Jitter”, The Bell System Technical Journal, vol. 51, No. 1, Jan. 1972, pp. 165-207.
Richard G. Kusyk, et al. Analysis of Tenchniques for the Reduction of Jitter Caused by SONET Pointer Adjustments, IEE Transactions on Communications, vol. 42, No. 2/3/4 Feb.-Apr. 1994, pp. 2036-2050.
Harley James
Mayer Michael
Neusy Philippe
Roberts Kim B
Daniels Kent
Nortel Networks Limited
Ogilvy Renault LLP
Pham Chi
Phan Tri H.
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