2 results about "Network Time Protocol" patented technology

This invention relates to the field of network time synchronization technology, and discloses a network time synchronization method, system, storage medium, and electronic device for bypassing UDP port blocking. The method includes: sending a time synchronization request to a Network Time Protocol (NTP) server through a User Datagram Protocol (UDP) port to detect the reachability of the NTP primary channel; when the NTP primary channel is determined to be unreachable, generating a query domain name containing a first time parameter to form a Domain Name System (DNS) query message encapsulating the time synchronization request; constructing a DNS secure transmission backup channel and sending the DNS query message to the target server; receiving the DNS response message returned by the target server and extracting a second time parameter from it; calculating the clock offset between the client and the target server based on the first and second time parameters, and adjusting the local system clock accordingly; the above method achieves secure and reliable network time synchronization under UDP port blocking.

A method for a first device to set a reference time and an apparatus for the same are disclosed in a wireless communication system according to various embodiments. The method and apparatus for the same are disclosed, comprising the steps of: setting a first reference time based on Network Time Protocol (NTP); receiving a first message from a second device; adjusting the first reference time based on NTP to a second reference time based on GPS (Global Positioning System) time based on the fact that the first message contains information regarding GPS time; and transmitting a second message based on the second reference time.