Carrier Aggregation Selection Based on Standalone Load
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Solution Overview
Problem
In wireless networks, base stations face challenges in selecting the optimal carrier for carrier-aggregation service when a UE is served with dual-connectivity, as they need to balance resource allocation between UEs with dual-connectivity and those with standalone service to avoid overburdening carriers used for high-priority standalone services like voice or streaming media.
Innovation Solution
The base station selects carriers for carrier-aggregation based on the load attributable to standalone service, excluding carriers with high loads from dual-connectivity service to ensure fair resource distribution, thereby prioritizing carriers with low loads from standalone services for addition to the UE's connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carriers with high load from standalone service are selected for carrier-aggregation with dual-connectivity service, then data rate for dual-connectivity UEs is improved, but resource availability for standalone service UEs deteriorates
Solution Approach 1:
The base station applies different selection criteria for different carrier types: carriers heavily used for standalone service are excluded from carrier-aggregation selection, while carriers with lower standalone service usage are preferred. This local differentiation ensures that resources critical for standalone service UEs are protected, while still allowing dual-connectivity UEs to access suitable carriers for enhanced data rates
Solution Approach 2:
The base station acts as an intermediary that mediates resource allocation between dual-connectivity UEs and standalone service UEs. By evaluating the load attributable to standalone service on each carrier and making intelligent selection decisions, the base station balances the needs of both UE types, preventing dual-connectivity UEs from monopolizing carriers needed for standalone service quality
2Productivity
If carriers heavily used for standalone service are allocated to dual-connectivity service, then capacity utilization is improved, but service quality for standalone service deteriorates
Solution Approach 1:
The base station takes preliminary action by excluding carriers with high standalone service load from being selected for dual-connectivity carrier-aggregation. This preventive measure ensures that carriers critical for standalone service quality (such as those carrying voice or streaming media) are protected from being overburdened by dual-connectivity traffic, thereby maintaining service quality reliability
Solution Approach 2:
The base station changes the selection parameter from simple load balancing to load attributable to standalone service. By using this specific parameter, the system can identify and protect carriers that are critical for standalone service quality while still allowing efficient capacity utilization on carriers where standalone service load is lower
Data Source
AI summary
When a UE is served with dual-connectivity service on a first radio access technology (RAT) concurrently with a second RAT, and when a serving base station faces a choice of which additional carrier to add to the UE's connection according to the first RAT for carrier-aggregation service of the UE according to the first RAT, the selection of an additional first-RAT carrier will be made based on a consideration of the carrier's load attributable to first-RAT-only service as compared with dual-connectivity service. For instance, the base station could select an additional first-RAT carrier based on the carrier's load attributable to first-RAT-only service, perhaps for high-priority first-RAT-only service, being threshold low. Or the base station could exclude from the selection a candidate first-RAT carrier based the carrier's load attributable to such first-RAT-only service being threshold high. The base station could then configure carrier-aggregation service of the UE accordingly.