Radio Access Network Multi-Band Coverage for Base-Station Failover
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Solution Overview
Problem
Existing 5G private network deployments face instability due to uncontrollable failures in base stations, leading to data transmission interruptions for user equipment.
Innovation Solution
A radio access network system employing multiple radio units with non-overlapping frequency bands and overlapping coverage areas, allowing a backup unit to take over when one fails, ensuring stable wireless connections without frequency interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple base stations are deployed to ensure complete coverage, then coverage area is improved, but system complexity and cost increase
Solution Approach 1:
The patent makes existing base stations multi-functional by enabling them to operate on multiple frequency bands (e.g., both 4.9GHz and 2.6GHz). This allows a single base station to provide coverage for multiple cells, reducing the need for additional dedicated backup base stations while maintaining comprehensive coverage and high availability.
2Reliability
If backup base stations are deployed to ensure high availability, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
Base stations are configured to serve multiple frequency bands and cells simultaneously, making them universal resources that can back up each other. When one base station or frequency band fails, another can immediately take over, providing high availability without requiring separate dedicated backup infrastructure.
Solution Approach 2:
The patent merges the functions of multiple base stations and frequency bands into a unified resource pool. The network controller manages these combined resources dynamically, allowing any available base station on any available frequency band to serve user equipment, thereby achieving high availability through resource consolidation rather than through redundant dedicated systems.
3Device complexity
If same frequency band is used for backup, then simplicity is maintained, but signal interference occurs
Solution Approach 1:
The patent changes the frequency band parameter for backup operations. Instead of using the same frequency band for both primary and backup communications, the system switches to a different frequency band (e.g., from 4.9GHz to 2.6GHz) when failures occur or in advance for critical communications. This frequency diversification eliminates signal interference while maintaining system simplicity.
Data Source
AI summary
A radio access network system includes: at least one first radio unit and at least one second radio unit. The at least one first radio unit has a first frequency band, and the at least one second radio unit has a second frequency band, wherein a frequency range of the first frequency band and a frequency range of the second frequency band do not overlap with each other, and a first coverage range of the first frequency band at an area and a second coverage range of the second frequency band at the area partially overlap with each other.