Amplitude-Based Wireless Signaling for Flexible Data Rates
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Solution Overview
Problem
Existing communication systems struggle to provide flexible and variable data transmission rates to accommodate different coverage scenarios, particularly for zero-power devices that rely on ambient energy and require low power consumption.
Innovation Solution
Generate 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
1Use of energy by moving object
If a receiver with extremely low power consumption and complexity is introduced, then energy consumption is reduced, but data transmission rate flexibility deteriorates
Solution Approach 1:
The patent implements dynamic adaptability by enabling the receiver to flexibly adjust its operating parameters (such as FFT size, subcarrier spacing, and symbol duration) based on the received signal characteristics and channel conditions. This allows the simple low-power receiver to adapt to different data transmission rates and coverage scenarios without requiring complex hardware, thereby resolving the contradiction between low power consumption and transmission rate flexibility.
Solution Approach 2:
The patent changes the operational parameters of the communication system to match different coverage scenarios. By dynamically adjusting parameters such as subcarrier spacing, symbol length, and FFT size based on channel conditions, the system enables the simple receiver to achieve variable data transmission rates without increasing hardware complexity or power consumption, thus resolving the technical contradiction.
2Device complexity
If fixed symbol lengths are used, then device complexity is reduced, but adaptability to different coverage scenarios deteriorates
Solution Approach 1:
The patent introduces dynamic parameter adjustment capabilities into the receiver, allowing it to adapt symbol lengths and other transmission parameters based on channel conditions and coverage requirements. This dynamic approach enables the receiver to handle various coverage scenarios without requiring multiple fixed-configuration receivers, thus maintaining low device complexity while improving adaptability.
Solution Approach 2:
The patent designs a universal receiver architecture that can handle multiple coverage scenarios and data transmission rates through software-configurable parameters rather than hardware variations. By making the receiver multi-functional through parameter flexibility, the system achieves coverage scenario adaptability without increasing device complexity or requiring multiple specialized receivers.
Data Source
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AI summary
Provided in the embodiments of the present application are wireless communication methods, and devices, by means of which methods and devices first symbols and/or second symbols in a target signal can be generated on the basis of at least one of the number of sub-carriers, a spacing between non-zero assigned sub-carriers, a sub-carrier spacing, and a frequency bandwidth. A wireless communication method comprises: a first communication device sending a target signal, wherein the target signal is a signal carrying information by means of a signal amplitude, the target signal comprises n first symbols and/or m second symbols, 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 both being posi-tive integers; the n first symbols are generated on the basis of at least one of the following: the number of sub-carriers, a spacing between non-zero assigned sub-carriers, a sub-carrier spacing, and a frequency bandwidth; and/or the m second symbols are generated on the basis of at least one of the following: the number of sub-carriers, the spacing between non-zero assigned sub-carriers, the sub-carrier spacing, and the frequency bandwidth.