Indoor Optical Wireless Channel Modeling for 6G

The patent develops a general geometry-based stochastic channel model that can universally describe indoor optical wireless communication channels across multiple optical frequency bands (infrared, visible, ultraviolet). The model integrates common propagation characteristics shared by all optical bands with unique band-specific characteristics, enabling a single model framework to serve multiple frequency bands and indoor scenarios without requiring separate specialized models for each case.

The patent incorporates wavelength-dependent parameters and band-specific propagation characteristics into the general model framework. Different optical frequency bands are modeled with their unique properties (e.g., infrared penetration through obstacles, visible light directionality, ultraviolet scattering) while maintaining the overall stochastic geometry structure. This allows the model to adapt local quality characteristics to specific bands while preserving general applicability.

The patent replaces complex deterministic ray-tracing calculations with a stochastic geometry-based approach. Instead of performing detailed geometric optics calculations for each ray path (mechanical/deterministic system), the model uses statistical distributions to characterize the channel properties directly, substituting complex mechanical computations with simpler statistical modeling that achieves comparable or superior accuracy.

The patent transforms the channel modeling approach by changing from deterministic parameters (exact ray paths, specific reflection points) to stochastic parameters (probability distributions, statistical moments, random variables). This parameter transformation simplifies the computational complexity while maintaining accuracy, as the stochastic model captures essential channel characteristics through statistical properties rather than exhaustive geometric calculations.

The patent segments the channel model into distinct geometric components (transmitter, receiver, scatterers, reflectors) with well-defined spatial relationships. By breaking down the complex indoor optical channel into these fundamental geometric elements, the model maintains ease of operation through clear geometric parameters while achieving high precision through accurate representation of optical propagation physics within each segment.

The patent transitions from two-dimensional or simplified channel models to a full three-dimensional geometric stochastic model. By adding the spatial dimension and modeling scatterers and reflectors in 3D space with proper geometric relationships, the model achieves both ease of operation through standardized geometric primitives and high precision through accurate three-dimensional optical propagation modeling.