Aligning radio base station node transmission timing on multiple transmit paths

US7729727B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Michael Jeck · Mainz, DE
• Uwe Hildebrand · Ergolding, DE

Key dates

• Filing date: Jun 30, 2005
• Grant date: Jun 1, 2010
• Expiry date: May 14, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B17/14
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A radio base station node (20) of a telecommunications network comprises a baseband transmitter (22) and plural radio frequency (RF) paths (24) between the baseband transmitter (22) and an antenna system (30). A measurement entity (32) is provided, preferably near the antenna system (30), for making a measurement or comparison of a time of detecting of a power modulation for each of plural RF transmission paths (24), e.g., a time of detecting of a power modulation for a first of the plural RF transmission paths and a time of detection of a power modulation for a second of the plural RF transmission paths. A transmission timing adjustment unit (34) uses the power modulation measurement or comparison for adjusting timing of transmission of signals for the plural RF transmission paths for obtaining a desired time alignment for the plural RF transmission paths.