Method for searching for signals among interference signals in a multi-channel radio receiver

US8588716B2 · kind B2 · utility

Assignee

• CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

• Christian Kursawe · Straubing, DE
• Thomas Reisinger · Regenstauf, DE
• Jürgen Reiner Schmid · Entringen, DE
• Franz Stolz · Regensburg, DE

Key dates

• Filing date: Jan 24, 2007
• Grant date: Nov 19, 2013
• Expiry date: May 7, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B17/318
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

In a method for searching for signals among interference signals in a multi-channel radio receiver, at least two different data signals are transmitted on at least one physical channel of a radio system to a common receiver. The search for a signal is initiated on any channel, starting with a sequential search of a useful signal by measuring the current signal strength in the form of the RSSI value; a search is made for a signal criterion of the signal and when said criterion has been identified, the measured RSSI value is compared with a predefined RSSI threshold value; if the RSSI threshold value is exceeded, the search for a signal is switched to a search for a data frame and if a data frame is found, the useful data is read; if no signal criterion is identified, if the RSSI threshold value is not exceeded and if no data frame is found, the procedure is interrupted and a new search operation is initiated once a new RSSI threshold value has been defined. The invention is particularly suitable for radio transmission systems in motor vehicles to implement RKE and TPMS functions and for multi-channel transmissions, used for example in remote metering and remote control systems.