BLE-UWB Ranging Phases for Accurate IoT Distance Measurement
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Solution Overview
Problem
There is a need for an effective method to enhance ranging performance in ultra-wideband (UWB) communication systems, particularly in IoT environments, by improving distance measurement between electronic devices.
Innovation Solution
A method and device utilizing Bluetooth low energy (BLE) communication in conjunction with UWB communication for controlling, exchanging messages, and reporting in different phases to enhance ranging performance, incorporating a transceiver and controller for each UWB device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB communication is used for ranging, then ranging accuracy is improved, but device complexity increases due to requiring both UWB and BLE communication modules
Solution Approach 1:
The patent combines UWB and BLE communication modules into a single device, allowing the device to leverage both technologies for ranging. The UWB module provides high-precision distance measurement while the BLE module handles control and report messaging, creating a hybrid system that achieves accurate ranging without requiring separate dedicated devices for each function.
2Use of energy by moving object
If BLE communication is used for control and report phases, then energy consumption is reduced, but ranging speed decreases due to sequential phase execution
Solution Approach 1:
The patent structures the ranging process into periodic phases (control phase using BLE, ranging phase using UWB, report phase using BLE). By alternating between low-power BLE communication and high-speed UWB communication in a structured sequence, the system optimizes energy consumption while maintaining acceptable ranging throughput through efficient phase transitions and parallel message exchanges within each phase.
Data Source
AI summary
The disclosure discloses a method for operating both a UWB channel and an BLE channel. According to an embodiment, a method of a first ultra-wideband (UWB) device may comprise transmitting a control message to a second UWB device using Bluetooth low energy (BLE) communication in a control phase for UWB ranging, transmitting a first message to the second UWB device using UWB communication in a ranging phase for the UWB ranging, receiving a second message corresponding to the first message from the second UWB device using the UWB communication in the ranging phase for the UWB ranging, and transmitting a report message to the second UWB device using the BLE communication in a report phase for the UWB ranging.