UWB Ranging Control Frame Dynamic Parameter Adjustment
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Solution Overview
Problem
Current ultra-wide band (UWB) ranging technologies face challenges in stably and flexibly performing ranging between multiple devices due to fixed time intervals and limited capacity, which restricts efficient distance measurement and positioning in applications like smart vehicles and IoT environments.
Innovation Solution
A method and system for UWB ranging that uses dynamic time intervals and adjustable ranging parameters, allowing devices to transmit and receive ranging control frames to perform ranging in multiple rounds, with the ability to change parameters based on request, enabling flexible and efficient distance measurement between multiple devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed time intervals are used for ranging, then the ranging process is simple to implement, but the flexibility and stability for multiple devices is poor
Solution Approach 1:
The patent implements dynamic time intervals for ranging operations. Instead of using fixed intervals, the system allows devices to adjust the time interval between ranging requests based on real-time conditions. The first device can modify the time interval parameter in ranging control frames, enabling adaptive ranging that accommodates multiple devices with different requirements while maintaining implementation simplicity through standardized parameter updates.
2Productivity
If fixed ranging parameters are used, then the system is easy to operate, but the capacity for stable ranging between multiple devices is limited
Solution Approach 1:
The patent incorporates feedback mechanisms where devices can request parameter changes based on ranging performance. The second device can send change requests to the first device, and the system can adjust ranging parameters dynamically. This feedback loop enables the system to optimize ranging capacity for multiple devices while maintaining ease of operation through automated parameter adjustment based on actual ranging conditions.
3Reliability
If dynamic ranging parameters are implemented, then the flexibility and stability for multiple devices is improved, but the complexity of the ranging protocol increases
Solution Approach 1:
The patent manages protocol complexity by focusing on parameter changes rather than fundamental protocol restructuring. The system maintains a standardized ranging protocol framework while allowing dynamic adjustment of specific parameters such as time intervals and ranging round counts. This approach improves ranging stability for multiple devices by enabling adaptive parameter optimization without requiring complex protocol modifications, as changes are made through standardized parameter updates in existing frame structures.
Data Source
AI summary
Provided is a method for stably and flexibly performing ranging between a plurality of devices. According to an embodiment, a method of operating a first device for performing ranging by using ultra-wide band (UWB) may include: transmitting a first ranging control (RC) frame to a second device; performing ranging with the second device for a number of ranging rounds determined based on the first RC frame; changing at least one ranging parameter based on a change request received from the second device; and transmitting a second RC frame including the changed at least one ranging parameter.