Data transmission time obtaining method, apparatus, and system
US11881931B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2022 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Mar 25, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0667
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A data transmission time obtaining method, apparatus, and system are provided. The method includes: A first device sends a first packet to a second device, and obtains a first send timestamp of the first packet; the first device receives a second packet that is sent by the second device and that corresponds to the first packet, and obtains a first receive timestamp of the second packet; the first device calculates, based on timing frequency of the second device, a second receive timestamp at which the second device receives the first packet and a second send timestamp at which the second device sends the second packet; and the first device calculates a data transmission time between the first device and the second device based on the first send timestamp, the first receive timestamp, the second send timestamp, and the second receive timestamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.