Time synchronization method, device and system
US8923346B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13039
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time synchronization method includes: after sending a synchronization message to the opposite end, sending a following message where an ending time for sending the synchronization message is recorded; receiving a delay request message sent by the opposite end, and sending a delay response message where the initial time for receiving the delay request message is recorded; receiving the synchronization message and the following message, and recording the initial time for receiving the synchronization message and the ending time recorded in the following message for sending the synchronization message; sending a delay request message, and recording an ending time for sending the delay request message; receiving a delay response message, and recording an initial time recorded in the delay response message for the opposite end to receive the delay request message; calculating the time offset value between the two ends, and completing time synchronization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.