Method for transmitting synchronization messages in a communication network

US8681915B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Michael Bernhard Buhl · Grafing, DE
• Dragan Obradovic · Ottobrunn, DE
• Günter Steindl · Poppenricht, DE
• Philipp Wolfrum · Munich, DE

Key dates

• Filing date: Sep 7, 2012
• Grant date: Mar 25, 2014
• Expiry date: Sep 7, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04J3/0638
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A method for transmitting synchronization messages in a communications network including a plurality of nodes having a first node and at least one second node, wherein in order to take into account differences in a reference clock frequency of a reference clock and an internal clock frequency of an internal clock of the at least one second node, a compensation interval, with which the second clock count state is adjusted on measurement of a delay time, is subdivided into smaller compensation timespans, and the smaller compensation timespans are used to determine a compensated time value for the delay time with a high degree of accuracy, where the compensated time value is then used to update the time information in the synchronization message.