System and method for measuring sample arrival rates on an asynchronous transport network
US6944189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5678
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of providing improved accuracy of the calculation of the long-term average arrival rate (AAR) of an ATM packet stream is disclosed. Using this method, accurate synchronization of a receiver clock to a network clock is achieved. The invention measures the variable time interval, T, required to complete the arrival of a known and fixed number of data packets, C. Using a predetermined and relatively large number of data packets, a time interval measurement is accurately measured to very precise values. Because the time interval measurement is triggered precisely by the arrival of the first data packet to the complete arrival of the last data packet in the session, there is no quantization error with respect to the first and last data packet. AAR is then calculated as (C*S)/T, where S is the number of samples per data packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.