Time synchronization method and system, and network device
US10412697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Oct 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A time synchronization method and system, and a network device, where the method includes receiving, by a second network device, a first packet from a first network device, where the first packet includes a first service frame and a first time stamp (T1), the first service frame carries a system clock of a radio equipment control (REC), obtaining, the system clock of the REC according to the first packet, sending, according to the system clock of the REC, the first service frame extracted from the first packet to a radio equipment (RE), recording a second time stamp (T2) at which the first service frame is sent, and determining, by the second network device, a transmission delay (T) according to T=T2−T1. Hence, a delay between the REC and the RE remains unchanged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.