Carrier Combination Selection in 5G Dual-Connectivity Networks
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Solution Overview
Problem
In heterogeneous wireless networks, the existing system for dual-connectivity limits the selection of carrier combinations, leading to sub-optimal user throughput due to the lack of awareness of primary access node's carrier aggregation parts by secondary access nodes, resulting in non-optimized aggregated bandwidth.
Innovation Solution
A method and system for generating a list of preferred carrier combinations and instructing access nodes or wireless devices to reorder internal lists, enabling the selection of optimized carrier combinations that maximize bandwidth and throughput by prioritizing carrier combinations based on predicted throughput and device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the secondary access node selects carrier combinations based only on its own MIMO layers and CA parts, then the selection process is simple and fast, but the aggregated bandwidth and user throughput are sub-optimal
Solution Approach 1:
The patent introduces an intermediary mechanism where the primary access node provides information about its CA parts to the secondary access node. This intermediary information exchange enables the secondary node to make optimized carrier combination selections that consider both nodes' capabilities, thereby improving aggregated bandwidth and user throughput without significantly increasing selection complexity
Solution Approach 2:
The primary access node performs preliminary action by pre-determining and communicating its CA parts information to the secondary access node before the carrier combination selection process. This preliminary information provision allows the secondary node to optimize its selection based on complete system knowledge, resolving the contradiction between simple selection and optimal throughput
2Adaptability or versatility
If the system uses heterogeneous networks with multiple RATs and frequency bands, then network coverage and capacity are enhanced, but carrier combination optimization becomes difficult due to lack of awareness between access nodes
Solution Approach 1:
The patent segments the information exchange process into distinct components: the primary access node segments its CA parts information and communicates it separately to the secondary access node. This segmentation allows heterogeneous networks to maintain their versatility while ensuring that necessary information is properly exchanged between nodes, preventing information loss in complex multi-RAT environments
Data Source
AI summary
A system for selecting an optimized carrier combination includes primary and secondary access nodes configured to deploy a plurality of carriers, and configured to generate a list of preferred carrier combinations and to re-order one or more internal lists of carrier combinations based on the preferred combinations to enable determination of an optimized carrier combination, for 5G EN-DC, MR-DC, carrier aggregation, and MIMO operation.