Checksum friendly timestamp update
US10148796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Mar 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/324
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network device in a network is provided that is configured to implement a process for modifying a timestamp in a packet that is a timing protocol packet. The timing protocol packet is encapsulated by a user data protocol (UDP) datagram, where the modified timestamp is written into the packet, but does not require a checksum of the UDP datagram to be changed. The process includes receiving a packet including a first timestamp over the network, receiving the first timestamp from the packet and a second timestamp to be written to the packet, and determining a third timestamp that is a modification of the second timestamp to be written to the packet, the third timestamp having least significant bits modified from the second timestamp such that the checksum of the UDP datagram is unchanged. The process writes the third timestamp into the packet and transmits the UDP datagram to the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.