Data transfer method and system in low voltage networks

US6507573B1 · kind B1 · utility

Assignees

• Frank Brandt · DE
• Frank Lukanek · DE

Inventors

• Frank Brandt · Berlin, DE
• Frank Lukanek · Berlin, DE
• Christian Hensen · Paderborn, DE
• Wolfgang Schulz · Wunstorf, DE
• Kay Schoenfeldt · Paderborn, DE

Key dates

• Filing date: Dec 2, 1999
• Grant date: Jan 14, 2003
• Expiry date: Dec 2, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B2203/5466
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

This invention relates to a method for data transmission in two-way communication via low-voltage systems that are linked to a higher order telecommunication network. Data transmission takes place within the low-voltage system at a high-frequency range of up to 30 MHz using band spreading of data signals and a transmit level below the specified radio interference or noise voltage limit, in that said band-spread data is given a direction coding to specify a logical direction within the low-voltage system using different sequences of a family of pseudo-random numbers to enable multiple-user operation, and in that the binary sequences of data with their user-specific spreading and direction-specific coding are identified by correlation using specified sequences at attenuation-dependent intervals within the low-voltage system, then said data sequences are regenerated and assigned new direction codes for forwarding.