Adaptive Interleaver for Carrier Aggregation Channel Quality
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Solution Overview
Problem
Current carrier aggregation technologies in LTE-A struggle to maintain high service quality due to static interleaving methods, which fail to adapt to changing communication channel conditions, leading to suboptimal data communication characteristics, especially in scenarios with varying channel quality and resource availability.
Innovation Solution
A base station and terminal apparatus system that dynamically interleaves data signals based on channel quality and resource availability for each component carrier, using frequency, time, and space interleaving techniques to optimize data distribution across multiple component carriers, ensuring high service quality by adapting to real-time communication conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If static interleaving method is used, then device complexity is reduced, but communication characteristics deteriorate when channel quality varies
Solution Approach 1:
The patent implements dynamic interleaving where the interleaving pattern is adaptively changed based on real-time channel quality information. The base station determines channel quality for each component carrier and selects interleaving patterns accordingly, allowing the system to optimize communication characteristics under varying channel conditions while maintaining manageable complexity through algorithmic adaptation.
2Reliability
If adaptive interleaving is implemented, then communication characteristics improve, but device complexity increases
Solution Approach 1:
The patent changes the interleaving pattern parameters based on channel quality measurements. Different interleving patterns are selected by adjusting parameters such as interleaving depth, pattern type, and distribution strategy across component carriers. This allows adaptive optimization of communication characteristics while managing complexity through parameter-based control rather than complete system redesign.
Solution Approach 2:
The system implements feedback mechanisms where channel quality information is continuously measured and fed back to control the interleaving process. The base station receives channel quality reports and adjusts interleaving patterns in subsequent transmissions, creating a closed-loop system that improves communication characteristics while keeping complexity manageable through iterative adaptation.
3Device complexity
If data signals are concentrated on single component carrier, then device complexity is reduced, but service quality deteriorates when that carrier has poor channel quality
Solution Approach 1:
The patent segments data signals and distributes them across multiple component carriers based on channel quality. Different portions of data are allocated to different carriers, with higher-quality carriers receiving more data or more critical data. This segmentation strategy improves service quality by utilizing available channel capacity while managing complexity through systematic distribution rules.
Solution Approach 2:
The patent applies local quality optimization by matching data transmission to local channel conditions on each component carrier. Carriers with better channel quality are utilized more intensively, while carriers with poor quality receive less traffic or are used for redundancy. This local optimization improves overall service quality while keeping the distribution mechanism relatively simple through quality-based allocation.
Data Source
AI summary
To adaptively interleave in accordance with communication channel conditions. Provided is a base station performing radio communication with a terminal apparatus on a communication channel formed by integrating a plurality of component carriers, including a quality acquisition unit that acquires channel quality of the communication channel for each of the component carriers and an interleaver that interleaves data signals transmitted on the communication channel in accordance with at least one of the channel quality acquired by the quality acquisition unit and available situations of communication resources for each of the component carriers.