Spectrally compatible mask for enhanced upstream data rates...

Details Spectrally compatible mask for enhanced upstream data rates... Spectrally compatible mask for enhanced upstream data rates...

2007-12-25

2007-12-25

Backer, Firmin (Department: 2616)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S484000

Reexamination Certificate

active

10404238

ABSTRACT:
A method and apparatus for providing extended upstream data transmission in a band having a lowest frequency f0by an end user terminal unit in an asymmetric digital subscriber line communication between a central office terminal unit and the end user terminal unit, using a loop having a length. In the method, a target rate of upstream data transmission is provided. A plurality of sets of values are determined, of (1) an extension frequency f2that is higher than a frequency f1for upstream data transmission, f1being a frequency established for non-extended upstream data transmission, the region bounded by f1and f2being an extension band for upstream data transmission, and (2) a maximum power level S2for the extension band determined by the extension frequency in the set. Using both terminal units, a selection set of values is selected by performing a signal-to-noise ratio determination for each of the sets of values and determining the set of values that results in an upstream data rate that approximates the target rate. Data is transmitted upstream by the end user terminal unit using the selection set of values.

REFERENCES:
patent: 6650697 (2003-11-01), Tate et al.
patent: 6885730 (2005-04-01), Bremer
patent: 2002/0027900 (2002-03-01), Hjartarson et al.
patent: 2002/0118733 (2002-08-01), Frenkel
patent: 2003/0086514 (2003-05-01), Ginis et al.

Affiliated with

Also associated with

Rating

Spectrally compatible mask for enhanced upstream data rates... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spectrally compatible mask for enhanced upstream data rates..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectrally compatible mask for enhanced upstream data rates... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3868568