Short-Range Wireless Frames With Adaptive Modulation for Low Latency
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Solution Overview
Problem
Existing Bluetooth technologies suffer from low throughput and high latency, which adversely affect user experience in scenarios requiring high data transmission rates and low latency, such as firmware updates, gaming, and high-definition audio/video synchronization.
Innovation Solution
A short-range wireless communication method utilizing phase shift keying modulation for frame headers and data domains with adjustable modulation schemes and bandwidths based on channel quality, along with synchronization codes and forward error correction coding, to enhance transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If existing Bluetooth technology is used, then device compatibility and ease of operation are maintained, but transmission rate and throughput are limited (maximum 3 Mbps) resulting in high latency
Solution Approach 1:
The patent implements dynamic modulation scheme selection where the system can switch between different modulation types (GFSK, DPSK, QPSK, 8PSK, 16QAM, 64QAM) based on channel conditions and data requirements. This allows the transmission rate to be dynamically adjusted from 1 Mbps to 200 Mbps while maintaining compatibility with existing Bluetooth devices that use GFSK modulation.
Solution Approach 2:
The patent changes key transmission parameters including modulation type, bandwidth (1-20 MHz), and coding rate (1/2 to 5/6) to achieve different transmission rates. By adjusting these parameters, the system can adapt to varying channel conditions and application requirements, achieving up to 200 Mbps throughput while maintaining backward compatibility.
2Productivity
If higher transmission rates are implemented, then throughput is improved, but latency increases due to larger frame headers and synchronization requirements
Solution Approach 1:
The patent segments the transmission frame into distinct functional parts: synchronization access sequence (for timing synchronization), packet header (for control information), and data domain (for payload). This segmentation allows the receiver to quickly synchronize using the dedicated synchronization sequence without waiting for the entire frame, thereby reducing latency while maintaining high throughput.
Solution Approach 2:
The patent implements preliminary synchronization using a synchronization access sequence at the beginning of each frame. This preliminary action establishes timing and frequency synchronization before the actual data transmission begins, enabling the receiver to process data immediately without delay and reducing overall transmission latency.
3Productivity
If modulation schemes with higher data rates are used, then throughput increases, but reliability decreases due to greater susceptibility to channel errors
Solution Approach 1:
The patent dynamically adjusts the modulation scheme based on channel quality feedback. When channel conditions are good, higher-order modulations (64QAM, 16QAM) are used for maximum throughput. When channel quality degrades, the system automatically switches to more robust modulations (QPSK, BPSK) with better error resistance, maintaining reliable communication across varying conditions.
Solution Approach 2:
The patent implements forward error correction coding and redundancy mechanisms beforehand to cushion against potential channel errors. By pre-processing data with error correction codes before transmission, the system can recover from errors without requiring retransmission, thereby maintaining both high throughput and reliability even in challenging channel conditions.
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
The method achieves high throughput and low latency, improving user experience by ensuring accurate data transmission even in varying channel conditions.
Implementation Method 1
phase shift keying modulation is used for the frame header
Implementation Method 2
quadrature amplitude modulation with a same bandwidth as the frame header is used for the data domain
Data Source
AI summary
This application provides a short-range wireless communication method and a related device. The method includes: generating a transmission frame. The transmission frame includes a frame header and a data domain, phase shift keying modulation is used for the frame header, and quadrature amplitude modulation or phase shift keying modulation is used for the data domain. The method includes sending the transmission frame. In this application, the phase shift keying modulation is used for the frame header of the transmission frame, and the phase shift keying modulation or the quadrature amplitude modulation with a same bandwidth is used for the data domain.