Temporary CBSD Test Grants for Protection-Area Installation
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Solution Overview
Problem
Existing systems face challenges in efficiently deploying cellular networks in underutilized sub-6-GHz spectrum due to the need for certified professional installers to wait up to 24 hours for a valid grant after installing CBSDs in protection areas, leading to inefficient installation processes.
Innovation Solution
Implementing a test grant system that allows CBSDs to transmit on a channel at minimum power for a reduced time interval, enabling technicians to complete testing and verification without delaying the conversion to a valid grant until the next CPAS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CBSDs are installed in protection areas, then spectrum access is enabled, but installation time is extended due to waiting for valid grant until next CPAS
Solution Approach 1:
The system performs preliminary interference assessment and issues a test grant before the regular CPAS evaluation, allowing the CBSD to be activated temporarily for testing purposes. This preliminary action enables technicians to complete installation and testing without waiting for the next scheduled CPAS, thereby resolving the time loss contradiction.
2Loss of time
If test grant is issued for reduced time interval, then testing can be completed promptly, but transmission power is limited to minimum
Solution Approach 1:
The system dynamically adjusts transmission power based on the grant type. For test grants, power is limited to minimum levels to ensure safety during temporary testing. For valid grants, the full power allocation is restored. This dynamic power adjustment allows timely testing completion while managing power constraints appropriately for each operational phase.
Data Source
AI summary
A spectrum access system (SAS) includes a transceiver configured to receive a registration request from a first base station in response to the first base station being installed. The SAS also includes a processor configured to allocate a channel in a shared spectrum and a transmission power to the first base station. The transceiver is configured to transmit a test grant authorizing the first base station to transmit on the channel at the transmission power for a predetermined time interval. The test grant is converted to a suspended grant following the predetermined time interval. In some cases, the transceiver is configured to receive the registration request from the first base station in response to the first base station being installed in a protection area.