System and method of synchronizing a distributed clock in a packet-compatible network

US12038782B2 · kind B2 · utility

Assignee

• ADTRAN NETWORKS SE · DE

Inventors

• Michael Rabinovich · Netanya, IL
• Moshe Tofef · Netanya, IL

Key dates

• Filing date: Nov 30, 2020
• Grant date: Jul 16, 2024
• Expiry date: May 27, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L67/60
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

There is provided a technique of clock managing in a packet data network implementing a time-transfer protocol. The technique comprises: modifying, by the timing-server, a timestamp record to enable a controllable access to data informative of the least significant part of clock-informative data (CLSP data), wherein modifying the timestamp record comprises modifying the least significant part of the timestamp record (RLSP) to comprise the CLSP data in an encrypted form or to comprise values substituting, in a predefined manner, the CLSP data; transferring the modified timestamp record to all timing-clients, wherein CLSP data are transferred in a controllable access manner; enabling access to the CLSP data merely to authorized timing-clients among the plurality of timing-clients; and enabling the authorized timing-clients to obtain the CLSP data and synchronize the respective clocks using the CLSP data together with data informative of the most significant part of the clock-informative data.