Wireless Audio Receiver Position Detection for Channel Assignment
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Solution Overview
Problem
Existing wireless communication systems, particularly in audio applications, face challenges in dynamically adjusting operating modes based on the relative position of wireless devices, leading to suboptimal audio reproduction and configuration in scenarios like headphones and loudspeakers.
Innovation Solution
The implementation of systems and methods that determine the relative position of wireless audio devices using signal reception or transmission characteristics, such as Time Difference of Arrival (TDOA), Angle of Arrival (AoA), and Received Signal Strength Indicator (RSSI), to configure and reconfigure audio operating modes, ensuring accurate channel assignment and optimal audio reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless audio devices use fixed operating modes without position awareness, then device complexity is reduced, but audio reproduction accuracy and adaptability deteriorate
Solution Approach 1:
The wireless audio receiver automatically determines its own position relative to the transmitter using signal characteristics (RSSI, TDOA, AoA) and configures its operating mode independently without external intervention, enabling adaptive audio reproduction while maintaining manageable system complexity through autonomous operation
Solution Approach 2:
The system dynamically changes operating parameters (audio channel assignment, reproduction mode) based on measured position parameters (RSSI values, time differences, angle data), allowing the audio receiver to adapt its behavior to different spatial relationships with the transmitter without requiring complex reconfiguration mechanisms
2Adaptability or versatility
If the system continuously monitors and adjusts operating modes based on position, then audio reproduction quality improves, but energy consumption increases
Solution Approach 1:
The system performs position monitoring and operating mode adjustment periodically rather than continuously, using trigger events such as connection establishment, signal strength threshold crossings, or predetermined time intervals to initiate reconfiguration, thereby maintaining audio quality while reducing overall energy consumption through间歇式 operation
Solution Approach 2:
The system uses feedback from position measurement (RSSI, TDOA, AoA data) to automatically adjust operating modes, creating a closed-loop control system that optimizes audio reproduction quality based on actual spatial conditions without requiring continuous active processing, thus balancing quality maintenance with energy efficiency
3Measurement precision
If the system uses complex positioning methods with multiple signal characteristics, then position determination accuracy improves, but processing time and computational complexity increase
Solution Approach 1:
The system employs partial positioning action by selectively using position determination methods based on availability and requirements - using simple RSSI-based distance estimation when sufficient, switching to TDOA or AoA methods only when higher precision is needed and conditions permit, thereby avoiding unnecessary computational overhead while maintaining adequate accuracy for audio reproduction
Solution Approach 2:
The system performs preliminary position determination during the connection establishment phase or initial calibration period, establishing the operating mode in advance before actual audio reproduction begins, which reduces processing time during critical audio transmission periods and allows complex calculations to be done when system resources are available
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time adjustment of audio channel assignment and reproduction based on device positioning, enhancing user experience by ensuring correct audio output regardless of device orientation or placement, and can be extended to other applications like navigation lighting systems.
Implementation Method 1
The relative position of the wireless audio transmitter to the wireless audio receiver may be determined based on one or more signal reception or transmission characteristics of a radio frequency (RF) signal
Implementation Method 2
The relative position of the wireless audio transmitter to the wireless audio receiver may be determined based on one or more signal reception or transmission characteristics of a radio frequency (RF) signal
Implementation Method 3
The relative position of the wireless audio transmitter to the wireless audio receiver may be determined based on one or more signal reception or transmission characteristics of a radio frequency (RF) signal
Data Source
AI summary
Systems and methods are provided that may be implemented to configure and/or reconfigure device operating modes based on relative position of a wireless transmitter to a wireless receiver that is receiving a wireless radio frequency (RF) signal transmitted from the wireless transmitting device, or vice-versa. The relative position of a wireless transmitter to a wireless receiver may be determined using any suitable technique, e.g., using Time Difference of Arrival (TDOA) of a signal received at separate antenna elements of an antenna array of the wireless receiver, using Angle of Arrival (AoA) of a signal received at an antenna array of the wireless receiver, using measured received signal strength (e.g., received signal strength indicator (RSSI) or received signal decibel-milliwatts (dBm)) of a signal received at different antenna elements of an antenna array of the wireless receiver, using Angle of Departure (AoD) of a signal transmitted from an antenna array of the wireless transmitter, etc.