Tunneled ORAN Spectrum Switching for CBRS Service Continuity
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Solution Overview
Problem
Existing systems face challenges in maintaining communication service continuity when Citizen Band Radio Spectrum (CBRS) is unavailable or prohibited, especially in areas with limited or no wireless coverage, due to interference from higher priority users or temporary spectrum unavailability.
Innovation Solution
A tunneled Open Radio Access Network (ORAN) system is employed to connect devices to a network core, utilizing CBRS coverage when available, and switching to licensed cellular spectrum when CBRS is unavailable, with tunneled connections over fiber optics or hardwires, and leveraging cloud-based ORAN services to manage identity and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If CBRS spectrum is used for wireless communication, then service coverage and capacity are improved, but service continuity deteriorates when CBRS becomes unavailable due to interference or higher priority users
Solution Approach 1:
The system dynamically switches between CBRS and licensed spectrum based on real-time availability. The ORAN device monitors CBRS spectrum conditions and automatically transitions to licensed spectrum when CBRS becomes unavailable, ensuring continuous service without manual intervention.
Solution Approach 2:
The system changes the operating spectrum parameter from CBRS to licensed spectrum when conditions require it. This parameter change allows the system to maintain service continuity by operating on different frequency bands with different availability characteristics.
2Reliability
If tunneled ORAN system with fallback capability is implemented, then service continuity is improved, but device complexity increases
Solution Approach 1:
The ORAN device acts as an intermediary between the wireless device and the network core. It manages the complexity of multi-spectrum operations by providing a unified interface, handling spectrum selection, and maintaining tunnel connections, thereby shielding the end device from system complexity.
Solution Approach 2:
The ORAN device performs multiple functions including CBRS spectrum access, licensed spectrum access, tunnel management, and spectrum switching. This multi-functionality consolidates complexity into a single device rather than requiring separate systems for each function.
3Reliability
If licensed spectrum backup is available, then service continuity is improved, but available spectrum resources are reduced
Solution Approach 1:
The system segments spectrum usage by dedicating CBRS for primary service delivery and licensed spectrum for backup. This segmentation allows efficient utilization of CBRS resources while maintaining service continuity through licensed spectrum fallback, optimizing the overall quantity of usable spectrum resources.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, connecting to a network core of a cellular network, wherein the connecting comprises a broadband connection utilizing tunneling to a security gateway; and assuming a functionality of Radio Access Network (RAN) to facilitate providing of a communication service to a wireless device, wherein a portion of the functionality is provided over a Citizen Band Radio Service (CBRS) band. Other embodiments are disclosed.