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:
Nov. 12, 2013
Filed:
Mar. 30, 2009
Christopher M Croot, Suffolk, GB;
Trevor P Linney, Suffolk, GB;
Philip a Everett, Suffolk, GB;
John W Cook, Suffolk, GB;
Ashley Pickering, Suffolk, GB;
Christopher M Croot, Suffolk, GB;
Trevor P Linney, Suffolk, GB;
Philip A Everett, Suffolk, GB;
John W Cook, Suffolk, GB;
Ashley Pickering, Suffolk, GB;
British Telecommunications PLC, London, GB;
Abstract
In a method and system for operating an ADSL access network which has a plurality of data connections () between the access network and end user devices (), and in which the access network controls the rate at which data is transferred between the user devices and an onward connection (), the access network stores a plurality of capped profiles each of which specifies a respective upper data rate to which the connection is limited and which is below the maximum achievable rate for the connection. The access network operates using a Dynamic Line Management (DLM) algorithm which, for a given data connection, operates to enable data transfer at a variable data rate up to the maximum rate, monitors the error performance and signal to noise margin variation for different data rates and, in the event that one or both are outside respective limits for a predetermined period, selects and applies one of the capped profiles to limit the upper data rate, selection being determined by the highest data rate achieved for which the error performance was within acceptable limits.