Method and apparatus for making quality of service measurements on a connection across a network
US6112236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1996 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Nov 21, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5638
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The quality of service provided by a connection in transferring data units (19) between first and second points (A, B) across a network (10), is measured by a method involving monitoring the normal connection traffic at the first and second points (A, B) to detect the occurrence of the same events at each point (unit 22). An event is deemed to have occurred at a monitored network point when a predetermined set of criteria concerning one or more data units is satisfied by the connection data-unit traffic at the point concerned. Whenever an event is detected, an event report or "digest" is generated (unit 25), this digest including a signature based on the contents of the data units giving rise to the event. Digests from both monitored network points (A, B) are sent to a correlation unit (30) where digests relating to the occurrence of the same event at the two network points are matched up. The matched digest pairs are then passed to a measurement unit (31) to derive quality of service measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.