Method and System for Matching Transmitter Clock Frequency and Receiver Clock Frequency, Method and System for Matching a Mixing Frequency and a Carrier Frequency, Method and System for Position Determination

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This invention provides a method and system to precisely align the clock frequencies between a signal transmitter and receiver, as well as to match the mixing and carrier frequencies in radio systems. The technology is particularly applied for high-precision indoor positioning, achieving improved timing synchronization without substantially increasing power consumption. By enabling highly accurate measurement of signal arrival times through virtual oversampling techniques, the system ensures very fine spatial resolution, e.g., millimeter or sub-millimeter, which is important for location-based applications.

Use CasesContent extracted from patent full text and abstract with AI.

• High-precision indoor positioning systems (e.g., asset tracking in warehouses, hospitals, or factories)
• Navigation solutions in GPS-denied environments (e.g., underground, inside buildings)
• Wireless communication systems requiring tight transmitter-receiver synchronization
• Industrial automation and robotics where real-time, precise position information is needed
• Augmented reality and virtual reality experiences that rely on accurate movement tracking
• Emergency response systems to locate people or equipment indoors
• Scientific experiments that need precise timing and spatial data in controlled environments

BenefitsContent extracted from patent full text and abstract with AI.

• Enables position determination with extremely high spatial resolution (down to millimeters or below) indoors
• Reduces energy consumption compared to traditional methods (no need to increase operating frequencies for higher resolution)
• Improves reliability and accuracy in environments where GPS is not available or reliable
• Allows for flexible deployment, as multiple transmitters and mobile receivers can operate without manual tuning
• Can be implemented with low-cost, commercially available components (e.g., quartz oscillators and digital logic)
• Supports scalable and robust networks with multiple transmitters and receivers
• Minimizes errors caused by frequency mismatches thanks to precise and automated frequency alignment

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Inventors & Applicants

Patent Abstract

The invention relates to a method for matching the transmitter clock frequency (fsc) of a transmitter (BS1-BS8) which transmits a signal and the receiver clock frequency (fec) of a receiver (MD) which receives the signal, in which method – the signal received by the receiver is supplied to a mixer (14), a frequency matching mixer, in which mixing, more particularly downmixing, takes place with a mixing frequency that corresponds to the receiver clock frequency (fec) or has a fixed, preferably integer ratio to the receiver clock frequency (fec), − it is determined whether the frequency component of the output signal of the frequency matching mixer (14) has a fixed, preferably integer ratio to the receiver clock frequency (fec), and – if this is not the case, the receiver clock frequency (fec) and/or the transmitter clock frequency (fsc) is/are adapted so that this is the case. Furthermore, the invention relates to a method and a system for matching the mixing frequency of a mixer (10) of a receiver (MD) and the carrier frequency of a signal received by the receiver (MD), and to a method and a system for position determination, more particularly indoor position determination.