Method, apparatus, and system for measuring asymmetric delay of communication path
US8750356B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2012 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Aug 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0667
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for measuring the asymmetric delay of a communication path includes: sending, by a first node, a first delay measurement message to a second node whose local clock is synchronized with the first node; receiving, by the first node, a second delay measurement message sent by the second node; calculating, according to time when the first delay measurement message is sent by the first node and time when the second node receives the first measurement message, a communication path delay in a direction towards the second node; calculating, according to time when the second node sends the second delay measurement message and time when the second measurement message is received by the first node, a communication path delay in a direction leaving the second node; and obtaining a measured value of the asymmetric delay of the communication path according to the communication path delays in the two directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.