Fragmented Carrier Interference Handling with Dynamic Guard Bands
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Solution Overview
Problem
3GPP networks face interference issues due to fragmented carrier assignments, where carriers between different UEs cause operational problems, which legacy implementations have not adequately addressed.
Innovation Solution
Implement UE detection and reporting of blockers, capability reporting for simultaneous reception of multiple frequency blocks, and network configuration and scheduling to manage interference by configuring guard bands and scheduling based on UE reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fragmented carrier assignments are implemented to increase network capacity, then productivity is improved, but interference between carriers causes reliability to deteriorate
Solution Approach 1:
The patent introduces an intermediary mechanism (interference coordination entity and signaling protocols) that mediates between fragmented carrier assignments and interference management. This intermediary collects interference information from multiple UEs and coordinates resource allocation to mitigate interference while maintaining network capacity.
Solution Approach 2:
The patent implements feedback mechanisms where UEs report interference measurements and channel quality indicators to the network, which then adjusts carrier assignments and power levels dynamically. This closed-loop feedback system enables continuous optimization of fragmented carrier operations to maintain reliability.
2Reliability
If guard bands are configured to reduce interference between frequency blocks, then reliability is improved, but bandwidth utilization deteriorates
Solution Approach 1:
The patent makes guard band configuration dynamic rather than static. The network adjusts guard band sizes and positions based on real-time interference conditions, traffic patterns, and channel measurements. This dynamic adaptation allows the system to minimize guard band overhead while maintaining adequate interference protection when needed.
Solution Approach 2:
The patent changes the parameters of guard bands (width, position, frequency location) based on measured interference levels and channel conditions. By adjusting these parameters dynamically, the system optimizes the trade-off between interference protection and bandwidth utilization for fragmented carrier operations.
3Productivity
If multiple frequency blocks are assigned to a single UE for simultaneous reception, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent merges the processing of multiple frequency blocks by combining reference signal measurements and channel estimates across blocks. This merging approach reduces the overall complexity of the receiver by sharing processing resources and algorithms across multiple frequency blocks rather than treating them independently.
Solution Approach 2:
The patent implements universal processing functions that handle multiple frequency blocks simultaneously using the same receiver chain and processing algorithms. This multi-functional approach allows a single receiver structure to efficiently process fragmented carriers across different frequency blocks, reducing hardware and software complexity.
Data Source
AI summary
The present application relates to devices and components including apparatus, systems, and methods to provide interference handling for fragmented carriers in wireless communication systems.