Systems and methods for characterizing loops based on single-ended line testing (SELT)
US9178990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Oct 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/46
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods for characterizing loops based on frequency domain reflectometry single-ended line testing (FDR-SELT) are described. One embodiment includes a method for determining whether a straight-loop departure condition exists on a loop under test. First, an un-calibrated echo signal is received. A region associated with the loop under test, a platform type, and estimated the length of the loop under test are then used together with the received un-calibrated echo signal to determine whether the loop is not a straight loop is determined through determining whether at least one differentiating feature is present in the received signal. Another embodiment includes a method for determining a loop gauge for a loop under test through analyzing characteristics relating to local maxima and local minima of the received un-calibrated echo signal using the region, platform type, and the estimated loop length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.