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.
Patent No.:
Date of Patent:
Jul. 29, 2008
Filed:
Sep. 03, 2003
Sigang Qiu, Raleigh, NC (US);
Prashant Pratap Tawade, Raleigh, NC (US);
Vedavalli G. Krishnan, Raleigh, NC (US);
Wesley H. Smith, Raleigh, NC (US);
Mandayam Krishnan, Raleigh, NC (US);
Sigang Qiu, Raleigh, NC (US);
Prashant Pratap Tawade, Raleigh, NC (US);
Vedavalli G. Krishnan, Raleigh, NC (US);
Wesley H. Smith, Raleigh, NC (US);
Mandayam Krishnan, Raleigh, NC (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Embodiments of the invention provide methods for determining the characteristics of a local loop using the multi-carrier tones of a DSL activation process. For one embodiment, one or more sets of downstream multi-carrier tones of a digital subscriber line activation process are received at an extended voice-band modem and are capable of transmitting upstream multi-carrier tones of the digital subscriber line activation process over a local loop. The downstream carrier tones and the upstream carrier tones are folded into a first multi-tone signal and a second multi-tone signal, respectively, each having a plurality of component signals within the spectrum band of the extended voice-based modem. The total signal power of the first multi-tone signal is divided by the power of one of the plurality of component signals of the second multi-tone signal to determine a ratio value. The ratio value is used to determine a characteristic of the local loop.