Dynamic Uplink Waveform Switching for Wireless Channel Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless networks use a single waveform for uplink transmission, which is not suitable for dynamic changes in signal strength and channel conditions due to varying distances and environmental changes, leading to inefficiencies in communication quality and efficiency.
Innovation Solution
Implementing a system where an access node dynamically selects or switches uplink waveforms for wireless devices based on channel conditions, using a processor to receive signals indicating channel conditions and choose the appropriate waveform from a plurality of available waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single waveform is used for uplink transmission, then device complexity is reduced and ease of operation is improved, but communication quality and efficiency deteriorate under dynamic channel conditions
Solution Approach 1:
The patent implements dynamic waveform switching where the uplink waveform is not fixed but changes based on real-time channel conditions. The access node receives channel condition indicators from wireless devices and dynamically selects between different waveforms (e.g., DFT-S-OFDM and CP-OFDM) to match current transmission conditions, thereby maintaining high communication quality without requiring complex device-side decision-making
Solution Approach 2:
The system employs feedback mechanisms where wireless devices report channel condition indicators (CQI) to the access node. This feedback loop enables the access node to make informed waveform selection decisions based on actual channel quality, signal strength, and interference levels, ensuring reliable communication while keeping device complexity low
2Productivity
If waveform switching is implemented dynamically, then communication efficiency and quality are improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent divides the waveform selection function into separate segments: wireless devices are responsible only for measuring channel conditions and reporting indicators, while the access node performs the complex waveform selection and management. This segmentation allows devices to remain simple while the network infrastructure handles the complexity of dynamic waveform switching
Solution Approach 2:
The access node acts as an intermediary that receives channel condition reports from devices and translates these conditions into appropriate waveform selections. This intermediary approach shields devices from complex waveform processing requirements while still enabling adaptive transmission based on channel conditions
Data Source
AI summary
A system for switching an uplink waveform for a wireless device in a wireless network includes an access node configured to deploy a first radio air interface to provide wireless services to the wireless device. The access node includes a processor configured to receive a signal indicating a channel condition from the wireless device. The processor is also configured to determine whether to switch the uplink waveform for the wireless device based on the signal indicating the channel condition.