Method and radio communication system for synchronizing subscriber stations

US7068629B1 · kind B1 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Michael Benz · Berlin, DE
• Anja Klein · Berlin, DE
• Armin Sitte · Berlin, DE
• Thomas Ulrich · Annaberg-Buchholz, DE
• Michael Faerber · Wolfratshausen, DE
• Meik Kottkamp · Munich, DE
• Volker Sommer · Berlin, DE

Key dates

• Filing date: Sep 3, 1999
• Grant date: Jun 27, 2006
• Expiry date: Sep 3, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W56/0085
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A method and radio communication system for synchronizing subscriber stations, wherein a time slot is assigned to a number of base stations for transmitting at least one synchronization sequence and adjacent base stations use a different time offset with respect to the beginning of the time slot for transmitting the synchronization sequence. Thus, superposition can be precluded even in the case of a synchronized operation of the base stations. So that the subscriber station can still determine the beginning of the time slot, the time offset is transmitted. The time offset corresponds to the choice of one or more synchronization sequences and/or the sequence of a number of synchronization sequences. The information relating to the time offset is transmitted coded in this manner. A subscriber station receives the synchronization sequence and performs a time synchronization via the time of reception of the synchronization sequence and the detected synchronization sequence designating the time offset and/or the detected sequence of a number of synchronization sequences.