# FR3 Ray Tracing

Canonical URL: https://fr3raytracing.com/
Publication status: staged
Deployment status: preview-only
Version: 2.2.0-preview.1
Last modified: 2026-07-31
Managed by: LJP Asset Group LLC
Publisher: https://ljpassetgroup.com/
Contact: support@ljpassetgroup.com

## Governing question

How can an FR3 analysis represent the way radio signals interact with a specific physical environment?

## Direct answer

FR3 ray tracing models environment-specific radio paths, including reflection, diffraction, blockage, and scattering. It translates building, terrain, material, and antenna assumptions into propagation-path information that can inform channel analysis and simulation.

## Why it matters

Engineering decisions can depend on a particular street, building, venue, factory, or deployment geometry. Ray tracing adds site-specific detail, but its output remains dependent on geometry quality, material assumptions, model configuration, and validation.

## Definition

Environment-specific representation of radio paths including reflection, diffraction, blockage, and scattering.


## Capability relationships

Ray tracing estimates propagation paths; simulation evaluates broader radio or system behavior.

## Standards and authority context

The two 3GPP records support channel and propagation context; they do not prescribe an LJP ray-tracing implementation.
- Study on channel model for frequencies from 0.5 to 100 GHz — 3rd Generation Partnership Project (3GPP), 3GPP TR 38.901; Release 14; under change control: https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3173
- Channel model validation of TR 38.901 for 7–24 GHz — 3rd Generation Partnership Project (3GPP), 3GPP Release 19 work item 1020081; RAN1: https://portal.3gpp.org/DesktopModules/CRs/CrDetails.aspx?CrId=586752

## Package

FR3 Ray Tracing is one peer Capability Namespace within FR3 Engineering Foundation at https://fr3simulation.com/.

## Credibility boundary

This namespace does not provide a ray-tracing product, solver, geometry dataset, calibration result, certification, or performance guarantee.

## Resources

- Namespace manifest: https://fr3raytracing.com/namespace.json
- Public ontology: https://fr3raytracing.com/ontology.jsonld
- Sitemap: https://fr3raytracing.com/sitemap.xml