Sequence-based link fault localization
US9002197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Aug 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/106
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for a network element or server end station to determine an estimated physical location of a fault in a communications link utilized by two network elements. In an embodiment, the first and second network elements generate link failure indications including time values representing when the respective network element detected the fault. In other embodiments, the link failure indications include time values transmitted over the communications link between the first and second network elements. A time distance between these time values is calculated, which is used to calculate the estimated physical location of the fault. In some embodiments, the link failure indications include sequence numbers transmitted or about to be transmitted over the communications link between the network elements. Sequence distances are calculated between the sequence numbers, and are used to calculate the estimated physical location of the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.