Apparatus and method to efficiently use the PTP timestamp for two-way delay and delay variation measurement in IP networks
US9923796B2 · kind B2 · utility
7Cited by
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20Claims
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Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Jan 16, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is implemented by a network device to establish a two-way active measurement protocol (TWAMP) test session to verify that a session sender and session reflector support a timestamp format extension including a Precision Time Protocol Version 2 (PTPv2) timestamp format. The PTPv2 timestamp format is to be utilized in place of a Network Time Protocol (NTP) timestamp format. The network device acts as a control-client that communicates with a server to establish the TWAMP test session between the session-sender and the session-reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.