Time synchronization in a satellite network
US9544079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Apr 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0015
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A remote device comprising a remote clock oscillator with relatively low precision, a receiver that receives time packets transmitted periodically from the hub device via the satellite, each time packet including a hub real time clock (RTC) value and a hub network clock reference (NCR) value, a remote RTC counter that represents a remote RTC value at the remote, a remote NCR counter that represents a remote NCR value at the remote, and processing circuitry that extracts the hub RTC value and the hub NCR value from a current time packet, compares contents of the current time packet with contents of a previously received time packet, and adjusts the remote RTC counter based on the result of the comparison to synchronize the remote RTC value at the remote with the hub RTC value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.