Wireless Modulation Protocol Switching for Performance
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Solution Overview
Problem
Current wireless communication devices, such as Bluetooth devices, face performance limitations due to simple and low-cost modulation/demodulation schemes, which cannot achieve better performance without adding complex algorithms, making it difficult to balance cost and performance.
Innovation Solution
Implementing a higher order modulation/demodulation scheme, such as M-ary Differential Phase-Shift Keying (MDPSK), and coherent signal reception using absolute phase reference information, allowing communication devices to switch protocols and improve performance while maintaining low costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple and low cost modulation/demodulation scheme is used, then the device cost is reduced, but the communication performance is limited and cannot achieve better performance
Solution Approach 1:
The patent implements dynamic protocol selection where the communication device can switch between standard Bluetooth protocol and vendor-specific enhanced protocol based on connection status. When connected to a device from the same vendor group, the system dynamically transitions to the enhanced protocol with higher order modulation schemes (16-QAM, 64-QAM, 256-QAM), achieving better performance without sacrificing compatibility or incurring additional costs when not needed.
Solution Approach 2:
The patent changes the modulation order parameter dynamically. The system supports multiple modulation schemes (GFSK, 16-QAM, 64-QAM, 256-QAM) and selects the appropriate modulation order based on the connection type. This parameter change allows the device to achieve higher data rates and better performance when connected to compatible devices, while maintaining low-cost operation with standard schemes when connected to general devices.
2Reliability
If fancy algorithms are added to squeeze performance gain, then the communication performance is improved, but the device complexity increases and cost increases
Solution Approach 1:
The patent extracts the enhanced algorithms and higher order modulation schemes into a separate vendor-specific protocol layer. This allows the complex algorithms to be selectively activated only when needed (when connected to devices from the same vendor group), rather than being permanently embedded in all devices. The extraction principle enables performance improvement without forcing complexity onto all devices, maintaining simplicity for general use cases.
Solution Approach 2:
The system dynamically activates or deactivates fancy algorithms based on connection conditions. When a connection is established with a device from the same vendor group, the enhanced algorithms are activated to provide performance gains. When connected to general devices, the system reverts to standard algorithms, avoiding unnecessary complexity. This dynamic activation resolves the contradiction by making complexity conditional rather than permanent.
3Productivity
If a higher order modulation/demodulation scheme is used, then the throughput and sensitivity are improved, but the device complexity increases
Solution Approach 1:
The patent implements multi-functionality by designing the communication device to support multiple modulation schemes (GFSK, 16-QAM, 64-QAM, 256-QAM) within a single device architecture. The device can universally handle both standard and enhanced protocols, selecting the appropriate modulation scheme based on connection type. This universality allows the device to achieve high throughput when needed without requiring separate hardware for different modulation schemes, thus avoiding increased complexity.
Solution Approach 2:
The system dynamically selects the modulation order based on connection conditions. When connected to devices from the same vendor group, the system transitions to higher order modulation schemes (16-QAM, 64-QAM, 256-QAM) to improve throughput and sensitivity. When connected to general devices, it uses standard GFSK modulation. This dynamic selection allows the device to achieve high productivity when needed while maintaining simplicity for general operation, resolving the contradiction between throughput and complexity.
Data Source
AI summary
A communication method employed in a wireless communication system including a first communication device and a second communication device is provided. The communication method includes: setting up a connection between the first and second communication devices; after the connection is set up, checking if both the first and second communication devices provide a symbol mapping function for converting a first modulation/demodulation to a second modulation/demodulation different from the first modulation/demodulation; and when both the first and second communication devices provide the symbol mapping function, using the second modulation/demodulation to replace the first modulation/demodulation so that each of the first and second communication devices communicates with each other by using the second modulation/demodulation.