CBRS Network Node Interference Detection and Reporting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Citizen Broadband Radio Service (CBRS) systems lack a mechanism to accurately detect and report interference among CBSDs from different networks, leading to inaccurate graph constructions and potential unacceptable interference in General Authorized Access (GAA) co-existence operations.
Innovation Solution
A network node configured to detect interference from neighboring CBSDs using RSRP and SIR measurements, identify interfering devices, and report this information to the Spectrum Access System (SAS) or Co-existence Manager (CxM), enabling the construction of more accurate graphs and edge-weight calculations for efficient CBRS band utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If CBSDs operate in GAA tier without interference detection mechanism, then spectrum utilization is simplified and deployment is easier, but interference accuracy deteriorates and unacceptable interference occurs among CBSDs from different networks
Solution Approach 1:
Each CBSD autonomously performs interference detection by measuring RSRP and SIR of neighboring CBSDs, identifies interfering devices, and reports findings to SAS/CxM without requiring complex centralized coordination, enabling distributed self-service interference management
Solution Approach 2:
CBSDs continuously perform preliminary interference detection and reporting before interference becomes unacceptable, allowing SAS/CxM to proactively adjust spectrum allocation and prevent interference issues rather than reacting after problems occur
2Measurement precision
If interference detection and reporting mechanism is implemented among CBSDs from different networks, then interference management accuracy is improved, but device complexity and operational overhead increase
Solution Approach 1:
The interference detection mechanism uses universal RSRP and SIR measurements that are already standard in CBRS operations, and the reporting framework leverages existing SAS/CxM infrastructure, allowing the same system components to serve both traditional spectrum management and new interference detection functions without requiring entirely new specialized equipment
Solution Approach 2:
CBSDs report detected interference information to SAS/CxM, which uses this feedback to optimize spectrum allocation and coordination strategies, creating a closed-loop system where detection results directly inform management decisions to improve overall system efficiency
3Productivity
If graph construction is performed without accurate interference information from neighboring CBSDs, then computational processing is faster and simpler, but graph accuracy deteriorates leading to poor spectrum allocation decisions
Solution Approach 1:
CBSDs continuously perform preliminary interference detection and reporting before graph construction is needed, so that when SAS/CxM requires updated graphs for spectrum allocation decisions, accurate interference information is already available, eliminating the need to choose between speed and accuracy
Data Source
AI summary
A network node of a communications network configured to provide Citizen Broadband Radio Service (CBRS) to at least one end user device (EUD) in a coverage area of the network node. The network node comprises: at least one processor; and a memory storing software instructions configured to control at least one processor to perform steps of: detecting interference from at least one aggressor device in the network; and reporting the detected interference to at least one of a Spectrum Access System (SAS) and a co-existence manager (CxM) of the communications network.