System and method for residence time calculation
US8670466B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2010 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Sep 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/106
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method are provided for residence time calculations in a network communications local device. A network interface module in the local device receives a first packet from a network-connected remote device. A timing module in the local device records an arrival time of the first packet with respect to a local reference clock. The timing module tracks adjustments in the local reference clock and records a known departure time, with respect to the local reference clock, of when the first packet will be transmitted from the network interface. The timing module adds a residence time field to the first packet representing the difference between the arrival and departure times, taking into account adjustments in the local reference clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.