Zero Configuration Direct Fallback Communication for CBRS
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Solution Overview
Problem
In the Citizens Broadband Radio Service (CBRS) spectrum management, lower priority tier operators face disruptions when higher priority tier operators revoke spectrum allocations, leading to unavailable primary radio bands, which prevents direct User Equipment (UE) to UE communication.
Innovation Solution
Implementing zero configuration direct fallback communication techniques that automatically select a channel in a fallback radio band based on system parameters from the primary radio band, allowing direct UE to UE communication without manual reconfiguration, using methods such as modulo operations on system identifiers and talk group identifiers to determine channel selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lower priority tier operators use primary radio bands for communication, then communication service is provided, but spectrum allocation may be revoked by higher priority tier operators causing communication disruption
Solution Approach 1:
The system pre-configures fallback radio bands and channel selection algorithms before primary band disruption occurs. When spectrum allocation is revoked, UEs can immediately switch to pre-identified fallback channels without requiring real-time configuration, thus maintaining communication continuity despite the revocation risk
Solution Approach 2:
The system dynamically changes operating parameters by switching from primary radio bands to fallback radio bands when spectrum allocation is revoked. The channel selection algorithm modifies frequency parameters based on system identifiers and talk group identifiers to determine appropriate fallback channels, enabling continuous communication under changing spectrum availability conditions
2Reliability
If manual reconfiguration is implemented for fallback communication, then communication can continue on fallback radio bands, but user intervention is required causing service interruption
Solution Approach 1:
The system implements self-service through an automated channel selection algorithm that uses UE system identifiers and talk group identifiers to automatically determine appropriate fallback channels. This eliminates the need for manual user configuration or intervention, as the system autonomously performs the reconfiguration process when primary band disruption occurs
Solution Approach 2:
The system incorporates feedback mechanisms where the channel selection algorithm continuously monitors primary band availability and automatically adjusts to fallback channels based on real-time spectrum conditions. This closed-loop approach ensures communication continuity without requiring user awareness or intervention in the reconfiguration process
3Adaptability or versatility
If spectrum allocation is granted to lower priority tier operators, then infrastructure based communication is enabled, but higher priority tier operators cannot access the spectrum when needed
Solution Approach 1:
The system implements dynamic spectrum access where lower priority tier operators can use primary radio bands when available, but automatically transition to fallback radio bands when higher priority tier operators need the spectrum. This dynamic adaptation allows the system to flexibly respond to changing priority requirements while maintaining communication continuity through pre-configured fallback options
Data Source
AI summary
A method and device for zero configuration direct fallback communication is provided. In one aspect a method comprises selecting a channel in a fallback radio band based on at least a portion of at least one system operating parameter for a primary radio band. The method further comprises switching to the selected channel in the fallback radio band. The method also comprises communicating over the selected channel in the fallback radio band.