Efficient determination of time of arrival of radio communication bursts

US6529708B1 · kind B1 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Erik Larsson · Linköping, SE
• Ari Kangas · Uppsala, SE
• Sven Fischer · Leipzig, DE

Key dates

• Filing date: Jul 16, 1999
• Grant date: Mar 4, 2003
• Expiry date: Jul 16, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S5/14
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The propagation time for propagation of a radio signal from a radio transmitting station to a radio receiving station is estimated based on calculated correlation values, calculated energy values and a known energy value. The receiving station receives a series of received signals that respectively correspond to radio signaling bursts transmitted by the radio transmitting station. Each of the radio signaling bursts includes a known signaling sequence. The calculated correlation values are indicative of correlations between the received signals and the known sequence, the calculated energy values are calculated for the respective received signals, and the known energy value is the energy of the known sequence.