Full Duplex Wireless Node Adaptive Mode Selection
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Solution Overview
Problem
The use of full duplex in wireless communication networks can increase interference levels, degrading performance in neighboring nodes or cells, making it not always advantageous to employ this technology.
Innovation Solution
A method and user equipment configuration to determine when to use full duplex by estimating the influence on neighboring nodes based on traffic load and interference levels, allowing adaptive usage to balance bandwidth benefits with controlled interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex is used in a wireless node, then bandwidth is increased, but interference levels increase and degrade performance in neighboring nodes
Solution Approach 1:
The system dynamically adjusts the duplex mode (full duplex or half duplex) based on real-time traffic load conditions and interference measurements. Each wireless node can switch between operating modes adaptively, transitioning from static to dynamic operation to optimize performance under varying network conditions.
Solution Approach 2:
The system changes operational parameters (duplex mode, transmission power) based on measured traffic load and interference levels. By monitoring network conditions and adjusting parameters accordingly, the system achieves optimal bandwidth utilization while maintaining acceptable interference thresholds for neighboring nodes.
2Productivity
If full duplex is used to achieve higher bandwidth, then spectrum efficiency improves, but self-interference cancellation complexity increases
Solution Approach 1:
Each wireless node performs self-interference cancellation using its own transmitted signal as reference. The node independently measures its self-interference characteristics and applies cancellation without requiring external assistance, enabling full duplex operation while managing complexity at the individual node level.
3Productivity
If full duplex is used in one cell, then local bandwidth increases, but performance in neighboring cells degrades
Solution Approach 1:
The system allows different cells to operate in different duplex modes based on local conditions. Each cell independently evaluates its traffic load and interference environment, enabling full duplex operation in cells with favorable conditions while maintaining half duplex in cells where neighboring performance would be degraded, creating localized optimization.
Solution Approach 2:
Wireless nodes measure actual interference levels experienced from neighboring full duplex nodes and use this feedback to adjust their own transmission parameters or duplex mode selections. This feedback mechanism enables the network to adapt to interference conditions and maintain acceptable performance across all cells.
Data Source
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AI summary
There is provided a method performed by a wireless node (10; 10') for determining when to use full duplex in the wireless node for communicating in a wireless communication network. The method comprises the step of estimating (S10) an influence on neighbouring wireless nodes (20; 20', 30; 30') of using full duplex in the wireless node (10; 10'). The method further comprises the step of deciding (S20) whether to use full duplex in the wireless node (10; 10') or not, based on the estimated influence.