Amplitude-Based Wireless Signaling With Variable Symbol Lengths
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Solution Overview
Problem
Existing communication systems face challenges in generating signals with flexible and variable data transmission rates to adapt to different coverage scenarios, particularly for zero-power devices that rely on ambient energy and require low power consumption.
Innovation Solution
The method involves generating first and second symbols in a target signal based on the number of subcarriers, spacing between non-zero assigned subcarriers, subcarrier spacing, or frequency bandwidth to create symbols of varying lengths, enabling more flexible and variable data transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed-length symbols are used in signal generation, then device complexity is reduced, but adaptability to different coverage scenarios deteriorates
Solution Approach 1:
The patent implements dynamic symbol generation where the length of first and second symbols is determined by runtime parameters including the number of subcarriers, spacing between non-zero assigned subcarriers, subcarrier spacing, and frequency bandwidth. This dynamic configuration enables the signal to adapt to different coverage scenarios without requiring multiple fixed-configuration devices, thereby improving adaptability while maintaining reasonable device complexity through parameter-based flexibility rather than structural complexity.
2Productivity
If variable symbol lengths are generated based on multiple parameters, then data transmission rate flexibility is improved, but device complexity increases
Solution Approach 1:
The patent achieves variable data transmission rates by changing key parameters of the symbol generation process: the number of subcarriers, spacing between non-zero assigned subcarriers, subcarrier spacing, and frequency bandwidth. By varying these parameters, the system can dynamically adjust the length of first and second symbols to match different coverage scenarios and data rate requirements, improving productivity without requiring complex additional hardware structures.
Solution Approach 2:
The signal generation device is designed with multi-functionality to handle various coverage scenarios using a single unified framework. The same device can generate symbols with different lengths by adjusting the configured parameters, making it universally applicable to both short-range and long-range communications, thereby improving data transmission rate flexibility without proportionally increasing device complexity.
3Use of energy by moving object
If low-power receiver is used, then energy consumption is reduced, but signal generation flexibility deteriorates
Solution Approach 1:
The patent enables low-power receivers to efficiently process variable-length symbols through self-service mechanisms. The receiver is designed to automatically detect and adapt to the symbol length based on the transmitted signal characteristics, eliminating the need for complex external control systems. This allows the receiver to maintain low power consumption while still benefiting from the flexibility of variable symbol lengths generated by the transmitter.
Data Source
AI summary
Provided is a method for wireless communication. The method is performed by a first communication device. The method includes: transmitting a target signal, wherein the target signal is a signal carrying information based on a signal amplitude, and the target signal includes n first symbols and/or m second symbols, wherein the first symbols are at a first level, and the second symbols are at a second level, the first level being higher than the second level, and m and n being positive integers; wherein the n first symbols are generated based on at least one of: a number of subcarriers, a spacing between non-zero assigned subcarriers, a subcarrier spacing, or a frequency bandwidth; and/or, the m second symbols are generated based on at least one of: a number of subcarriers, a spacing between non-zero assigned subcarriers, a subcarrier spacing, or a frequency bandwidth.