Dynamic Resource Allocation for Dual-Connectivity Access Nodes
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Solution Overview
Problem
In heterogeneous wireless networks supporting EUTRA-NR Dual Connectivity (EN-DC), there is a challenge in allocating resources of a jointly-used 5G access node for dual-connectivity service among UEs served by different access nodes, such as macro and small-cell 4G access nodes, to optimize air-interface resource usage.
Innovation Solution
Resources of the jointly-used 5G access node are dynamically allocated based on prioritization of the serving access nodes, with higher priority given to certain types of access nodes, such as small-cell access nodes over macro access nodes, to manage resource allocation in the time and frequency domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources of a jointly-used 5G access node are statically allocated among multiple primary nodes, then resource allocation is simple and stable, but resource utilization efficiency deteriorates when traffic demands vary
Solution Approach 1:
The patent implements dynamic resource allocation where the 5G access node dynamically adjusts resource allocation based on real-time traffic demands and priority levels of different primary nodes. The resource allocation is no longer static but adapts continuously to changing network conditions, thereby improving resource utilization efficiency while managing complexity through automated algorithms.
Solution Approach 2:
The patent changes the allocation parameters by introducing priority levels for different primary nodes (e.g., macro access nodes vs. small-cell access nodes) and adjusts resource allocation based on these parameters. This allows the system to optimize resource distribution according to service requirements and traffic patterns without requiring complex manual configuration.
2Reliability
If higher priority is given to small-cell access nodes for resource allocation, then service quality for small-cell UEs is improved, but resource fairness for macro access nodes deteriorates
Solution Approach 1:
The patent applies different resource allocation strategies to different types of primary nodes based on their local characteristics and service requirements. Small-cell access nodes receiving higher priority for enhanced service quality, while macro access nodes maintain adequate resource allocation through the prioritization mechanism, ensuring each type receives appropriate resources for its specific function.
Solution Approach 2:
The patent creates a composite resource allocation framework that combines multiple allocation criteria (priority levels, traffic demands, node types) into a unified system. This composite approach allows simultaneous optimization for different node types without severe unfairness to any single group.
3Productivity
If dynamic resource allocation is implemented based on priority, then resource utilization efficiency is improved, but system complexity and control difficulty increase
Solution Approach 1:
The 5G access node autonomously performs dynamic resource allocation based on pre-configured priority rules and real-time traffic information. The system serves itself by automatically adjusting resource distribution without requiring complex external control mechanisms, thereby improving efficiency while limiting the growth of system complexity through self-managed operations.
Data Source
AI summary
In an arrangement where an access node (e.g., a Node-B) is used in dual-connectivity service of UEs that are served by other access nodes, resources of the access node could be dynamically allocated to the UEs based at least on respective priorities designated for the other access nodes. For instance, each other access node could be prioritized based on its type, such as whether it is a macro access node, a small-cell access node, an indoor access node, an access node for a special event, or a access node for dedicated service, among other possibilities, and allocation of resources of the jointly-used access node could be defined based on these priorities, giving higher resource-allocation priority to UEs that are served by a higher priority other access node and giving lower resource-allocation priority to UEs that are served by a lower priority other access node.