BLE-UWB Timing Synchronization for Distance Measurement
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Solution Overview
Problem
Existing distance measurement techniques between devices lack a mechanism to synchronize communication timings, leading to inefficiencies in signal transmission and reception.
Innovation Solution
A communication device equipped with both Bluetooth Low Energy (BLE) and Ultra-Wide Band (UWB) wireless communication units, where the device transmits setting information signals to synchronize communication timings, ensuring accurate distance measurement and improved authentication processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distance measurement is performed using signal propagation time between devices, then distance measurement capability is achieved, but communication timing synchronization between devices is not established
Solution Approach 1:
The patent applies preliminary action by having the first device transmit setting information signals before the actual distance measurement signals. The second device uses this setting information to pre-configure its reception timing, ensuring it is ready to accurately receive and measure the propagation time of subsequent measurement signals. This preliminary timing configuration resolves the synchronization issue while maintaining measurement precision.
2Adaptability or versatility
If wireless communication units operate with different communication standards, then multi-standard communication capability is achieved, but communication timing coordination between different standards becomes difficult
Solution Approach 1:
The patent uses the first signal (conforming to the first communication standard) as an intermediary carrier that conveys setting information for the second communication standard. The setting information embedded in the first signal acts as a mediator that enables the second wireless communication unit to synchronize its timing without requiring complex direct coordination between the two different communication standards. This reduces timing coordination complexity while maintaining multistandard capability.
Data Source
AI summary
To provide a mechanism capable of matching timings at which communication is performed between devices. A communication device for performing wireless communication with another communication device, the communication device comprising: a first wireless communication unit configured to perform communication conforming to a first wireless communication standard; a second wireless communication unit configured to perform communication conforming to a second wireless communication standard; and a control unit configured to control the first wireless communication unit so that the first wireless communication unit transmits, a plurality of times, a first signal, the first signal being a signal conforming to the first wireless communication standard and being a signal including setting information that is information for setting a timing at which the second wireless communication unit performs communication.