The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 26, 2021

Filed:

Mar. 09, 2018
Applicant:

British Telecommunications Public Limited Company, London, GB;

Inventors:

Ian Cooper, London, GB;

Ian Horsley, London, GB;

Leslie Humphrey, London, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/26 (2006.01); H04B 3/32 (2006.01); H04L 5/00 (2006.01); H04L 5/02 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04B 7/2656 (2013.01); H04B 3/32 (2013.01); H04L 5/0007 (2013.01); H04L 5/026 (2013.01); H04L 27/2656 (2013.01); H04L 27/2666 (2013.01);
Abstract

A digital subscriber line transceiver for transmitting data over a twisted metallic pair using an orthogonal frequency division multiplex technique and employing a time division duplex mode of operation is operable to adopt a plurality of different framing structures including a first framing structure having a frame duration equal to a first predetermined frame duration period and including a downstream set of symbols and an upstream set of symbols, with gaps after each set of symbols summing to a total gap duration of one symbol duration. The different framing structures further include a second framing structure having a frame duration equal to the first predetermined frame duration period and including first and second downstream sets of symbols, first and second upstream sets of symbols and gaps after each of these sets of symbols summing to a total gap duration of an integer number of one or more symbol durations.


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