Time adjustment using time-to-live values
US8954609B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2012 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Oct 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one example, network device includes a control unit having one or more hardware-based microprocessors and an interface. The interface can receive a first time synchronization message from a master device that comprises a first TTL value. The first TTL value can be indicative of a number of hops traversed by the first time synchronization message. The interface can subsequently receive a second time synchronization message from the master device that comprises a second TTL value that is is indicative of a number of hops traversed by the second time synchronization message. The network device can also include a timing module that determines a time adjustment based at least in part on the determination that the first and second TTL values are different, and applies the time adjustment to update the time of the network device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.