Method for synchronizing a radio communication system divided into radio cells, a base station and mobile station in such a system

US7328034B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Elena Costa · Birkenfeld, DE
• Dirk Galda · Haar, DE
• Niclas Meier · Birkenfeld, DE
• Hermann Rohling · Wolfenbüttel, DE
• Egon Schulz · Birkenfeld, DE
• Martin Weckerle · Rosenheim, DE

Key dates

• Filing date: Jul 7, 2004
• Grant date: Feb 5, 2008
• Expiry date: Dec 14, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/2696
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A method synchronizes a radio communication system divided into radio cells. Data is transmitted in the radio communication system by a multiple access method. Each radio cell thus has a base station for the radio feed of several mobile stations, allocated to the radio cell. A synchronization of the base station is carried out using the received signals from mobile stations in the same radio cell and also in adjacent radio cells. The base station determines at least one pilot signal and signals said pilot signal to the allocated mobile stations in a downwards direction. The allocated mobile stations transmit the signaled pilot signal in an upwards direction to the base station. The base station determines a synchronization value, from the received pilot signals from the radio cell thereof and also from the adjacent radio cells, fro a time synchronization and/or for a frequency synchronization on which the bas station is synchronized.