Secondary Cell Group Selection for Private Cellular Networks
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Solution Overview
Problem
Private cellular networks face high deployment costs due to the need for densified or multi-band radio units to achieve high-quality cellular service, which can be costly and inefficient.
Innovation Solution
Implementing a dual connectivity approach that selects secondary cell groups from public cellular networks with complementary frequency bands to supplement private network traffic, optimizing spectrum allocation and reducing operational costs by activating secondary cell groups only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio units are densified to maximize spectral efficiency and increase footprint, then cellular service quality is improved, but deployment costs increase
Solution Approach 1:
The patent combines private and public cellular networks through dual connectivity, merging their resources to provide high-quality service. The private network uses public network secondary cell groups for supplementation, reducing the need for extensive private network densification while maintaining service quality.
Solution Approach 2:
The patent enables radio units to serve multiple functions by allowing them to operate in both private and public network modes. The same physical infrastructure can provide service for both networks, reducing the need for dedicated densified radio units for the private network alone.
2Reliability
If multi-band radio units are adopted for private cellular network, then service quality is improved, but deployment costs increase
Solution Approach 1:
The patent merges single-band private network deployment with public network multi-band resources. Instead of deploying expensive multi-band radio units in the private network, the solution combines single-band private radio units with public network multi-band cell groups, achieving multi-band service quality without multi-band private radio units.
3Reliability
If secondary cell groups are continuously activated for private network, then service quality is improved, but operational costs increase
Solution Approach 1:
The patent implements dynamic secondary cell group activation based on traffic conditions. The system monitors private network traffic and activates public network secondary cell groups only when traffic thresholds are exceeded, rather than maintaining continuous activation. This dynamic approach reduces operational costs while maintaining service quality when needed.
Solution Approach 2:
The system employs periodic evaluation of traffic conditions to determine when secondary cell groups should be activated or deactivated. This periodic monitoring and conditional activation reduces unnecessary operational costs while ensuring service quality is maintained during high-traffic periods.
Data Source
AI summary
The described technology is generally directed towards secondary cell group selection in the context of a dual connectivity based approach to providing cellular service via private cellular networks. In a dual connectivity arrangement, network traffic can be transported via a master cell group (MCG) provided by a private cellular network, and the network traffic can alternatively be transported via a secondary cell group (SCG) provided by a public cellular network. Network equipment can use the techniques disclosed herein to select an SCG from among candidate SCGs, where the candidate SCGs use different frequency bands having different complementary characteristics with respect to the MCG.