Technology

RF Interference Characterization

Spectrum-NET incorporates Spectrum Effect's patented technologies for the detection and characterization of RF interference sources that pollute spectrum and degrade network performance. The Spectrum-NET framework for its RF interference characterization technologies is shown in the figure below. Spectrum-NET utilizes outlier detection techniques to identify sub-performing network cells `with potential RF interference issues. These cells are further analyzed by a suite of feature extraction modules that characterize individual interference events on the basis of: spectral, temporal and spatial characteristics. Based on these characteristics, the rule-based classifier determines the interference type. The Spectrum-NET framework allows new rules to be dynamically learned and existing rules to be dynamically optimized based on user-feedback. Additional algorithms assess the performance impact of external and unintended internal interference, helping the operator to evaluate the significance and prioritize follow-up for the events.

Spectrum-NET Interference Characterization and Classification Framework

Spectrum-NET Interference Characterization and Classification Framework

 

RF Interference Localization

Spectrum-NET leverages the interference event detection and classification processing described above to identify On-Site interference sources such as faulty cell site electronics or multi-carrier intermodulation products.

Interference events that are determined to be Off-Site or not originating from within the local cell site itself are further processed through interference localization processing to determine the approximate origin and or geographic extent of the detected interference events. Traditional triangulation/trilateration methods are employed to calculate the locations of source(s) of the external RF interference. The accuracy of the location determination is further enhanced by leveraging its patented transmission matrices technologies and patent-pending Localization Grid Report. Spectrum-NET creates probabilistic grids around the area where most highly impacted cells are located. This approach provides the mobile operators with the most actionable information for locating the geographic location of the external interference. 

Spectrum-NET’s localization processing delivers actionable information regarding the source and extent of Off-Site interference events including:

Application to Spectrum Sharing Systems

Spectrum-NET’s ability to detect, classify and localize RF interference events is directly applicable to developing spectrum sharing technologies such as CBRS and LSA. Commercial network operators deploying these technologies will benefit from Spectrum-NET’s ability to monitor and report on the quality of SAS or LSA assigned spectrum and detect interference events as they occur. This monitoring and interference impact reporting capability offers operators, considering deployment in shared spectrum bands, the opportunity to internally monitor and evaluate the return on investment into spectrum sharing programs.

 

About Spectrum Effect
Spectrum Effect’s revolutionary solution, Spectrum-NET, helps operators make the most of their valuable spectrum assets by rapidly identifying, locating and mitigating sources of RF interference and optimizing networks for future sharing opportunities.

Spectrum Effect has developed the key technology building blocks needed to rapidly maximize and monetize limited spectrum resources on today’s networks.
Spectrum Effect Product Solutions, Identify & Mitigate External Interference
As data demand steadily escalates, Spectrum-NET provides operators with the deep network visibility needed to protect their sizable investment in licensed spectrum and ensure ongoing service quality.
Spectrum Effect’s breakthrough, Spectrum-NET, addresses this dilemma by enabling mobile operators of shared spectrum networks to rapidly identify, characterize, and locate sources of external interference during normal network operation with no downtime.
Spectrum Effect’s Spectrum-NET solution has the advanced technology needed to provide a clear picture of complex, overcrowded 5G networks.
Spectrum Analytics at Mobile World Congress
As spectrum sharing solutions such as LTE-U, CBRS, and LSA are deployed, the external interference will dramatically increase by design making Spectrum-NET’s external interference management capabilities an even more critical asset for operators.