Dynamic Uplink Waveform Selection for Edge Coverage
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Solution Overview
Problem
Existing wireless communication systems face limitations in dynamically switching uplink waveforms, particularly for terminal devices, which affects uplink coverage and performance, especially in edge coverage scenarios.
Innovation Solution
A mechanism is introduced for terminal devices to dynamically determine the uplink waveform based on factors such as downlink signal measurement, uplink coverage information, and dynamic indication from the network device, allowing flexible switching between waveforms like DFT-S-OFDM and CP-OFDM to improve coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the uplink waveform type is semi-statically configured, then the system complexity is reduced and ease of operation is improved, but the adaptability and uplink coverage performance deteriorate
Solution Approach 1:
The patent implements dynamic waveform switching by introducing a waveform indication field in downlink control information that enables the terminal device to dynamically select between different uplink waveforms (CP-OFDM and DFT-S-OFDM) based on current channel conditions and network requirements, transforming the previously static waveform configuration into a flexible dynamic selection mechanism
Solution Approach 2:
The patent changes the waveform parameter from a fixed semi-static configuration to a dynamically selectable parameter by introducing waveform indication information that allows the terminal device to switch between different waveform types (CP-OFDM and DFT-S-OFDM) based on real-time conditions, thereby improving adaptability while maintaining system operability
2Device complexity
If the terminal device uses a single uplink waveform type, then the device complexity is reduced, but the uplink coverage performance and data transmission throughput deteriorate
Solution Approach 1:
The patent enables the terminal device to support multiple uplink waveform types (CP-OFDM and DFT-S-OFDM) simultaneously, allowing the device to function with different waveforms based on coverage requirements and channel conditions, thereby improving uplink coverage performance and throughput without significantly increasing device complexity through efficient waveform management
3Stability of the object's composition
If the uplink waveform cannot be flexibly switched, then the system stability is improved, but the productivity and communication efficiency deteriorate
Solution Approach 1:
The patent introduces dynamic waveform switching capability through waveform indication information in downlink control information, allowing the system to adaptively change waveform types based on real-time communication conditions while maintaining overall system stability through controlled and managed transitions between waveform states
Data Source
AI summary
A wireless communication method, a terminal device, and a network device are provided. The wireless communication method includes: determining, by a terminal device, a target uplink waveform from a plurality of uplink waveforms. The target uplink waveform is used for the terminal device to perform uplink communication with a network device.