Carrier Aggregation Layer Selection via Effective Bandwidth Comparison
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Solution Overview
Problem
Conventional carrier aggregation scenarios fail to consider the TDD effective bandwidth, leading to suboptimal selection of layers for carrier aggregation, often prioritizing TDD layers over FDD layers even when they provide greater bandwidth, resulting in inefficient resource allocation and reduced throughput.
Innovation Solution
A method and system that compare FDD bandwidth to TDD effective bandwidth, considering the slot pattern on the TDD layer, to select the most suitable layer for carrier aggregation based on user equipment capabilities, prioritizing either the TDD or FDD layer for maximum effective bandwidth and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TDD layers are prioritized for carrier aggregation based on conventional bandwidth comparison, then TDD layer selection is simplified, but the effective bandwidth is reduced and throughput is suboptimal
Solution Approach 1:
The patent transforms the TDD bandwidth parameter by applying a slot pattern-based transformation factor to convert TDD bandwidth into an effective bandwidth that reflects actual usable capacity. This parameter transformation enables fair comparison between TDD and FDD layers by adjusting for TDD's time-division multiplexing characteristics, thereby resolving the contradiction between simplified selection and optimal throughput.
2Productivity
If conventional bandwidth comparison is used for layer selection, then the selection process is straightforward, but resource allocation efficiency is reduced
Solution Approach 1:
The patent introduces an effective bandwidth as an intermediary metric that mediates between raw TDD/FDD bandwidth values and the final layer selection decision. This intermediary transformation accounts for TDD slot patterns and provides a normalized basis for comparison, improving resource allocation efficiency while maintaining operational simplicity through automated calculation.
3Productivity
If TDD layers are selected without considering effective bandwidth, then carrier aggregation setup is faster, but network performance is reduced
Solution Approach 1:
The patent performs preliminary calculation of effective bandwidth values for all available TDD and FDD layers before the actual carrier aggregation selection process. By pre-computing these transformed bandwidth metrics and storing them, the system enables rapid selection decisions without performing complex slot pattern calculations during real-time aggregation setup, thus maintaining fast deployment while achieving optimal network performance.
Data Source
AI summary
According to aspects herein, methods and systems for prioritizing paired versus un-paired spectrum selection in carrier aggregation scenarios are provided. More particularly, after determining a node comprises at least one time division duplex (TDD) layer and a frequency division duplex (FDD) layer, a FDD bandwidth is compared to a TDD effective bandwidth. The TDD effective bandwidth considers the slot pattern on the TDD layer. Based on the comparison and capabilities of user equipment (UE), a TDD layer or the FDD layer is selected for carrier aggregation. In this way, priority can be given to the TDD layer or the FDD layer to provide the highest effective bandwidth or to accommodate various load balancing scenarios