Patent · US Active

Estimating pair symmetry status for a communication line

US8537973B2 · kind B2 · utility

1Cited by

0References

21Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Miguel Berg · Upplands Väsby, SE
Daniel Cederholm · Stockholm, SE

Key dates

Filing date	Mar 26, 2010
Grant date	Sep 17, 2013
Priority date	—
Expiry date	Mar 26, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04M3/34
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An apparatus for estimating pair symmetry status for a communication line (Ci). The apparatus is configured to: obtain a value set indicative of a signal to noise ratio for the communication line (Ci) and at a receive band frequency (f); determine a crosstalk coupling length (Li) for the communication line (Ci); and estimate the pair symmetry status, based on the obtained value set indicative of the signal to noise ratio (SNRi(f)), the crosstalk coupling length (Li) and a predetermined symmetry indicator-value (qmax; ki,max). Related method and computer readable medium are also described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.