5G wireless skill

The 5G skill turns Nexma into a wireless network-design platform. It models macro and small-cell deployment, validates coverage and capacity, and plans backhaul.

What it covers

• Entities. gNodeB (macro base station), SmallCell, CPE (customer premises

equipment), BackhaulLink, PowerSupply. Each carries typed properties (band, MIMO configuration, EIRP, antenna height).

• Relationships. RFCoverageLink, BackhaulFiber, MicrowaveHop. Backhaul links

carry capacity and resilience class.

• Constraints. Minimum −85 dBm signal strength at served locations, 3GPP spectrum

allocation, line-of-sight requirements for microwave backhaul, EIRP per band per region.

• Constants. 3GPP Release 15+ band plans, antenna pattern libraries, propagation

model defaults (ITU-R P.452 / P.1812).

• Layer config. Base stations as 3D antennas scaled by sector count, coverage as

RSRP heatmaps, backhaul as solid (fiber) or dashed (microwave) lines.

• Toolbar tools. Generate cell layout, run coverage simulation, plan backhaul

rings, validate spectrum compliance.

Typical workflow

1. Scope. Draw a service polygon — typically a town, campus, or stadium.
2. Demand. Bring a subscriber-density layer or let Jax derive one from population

data + land-use multipliers.

1. Generate. Ask Jax: "Cover this polygon with C-band macro cells targeting

−80 dBm RSRP at street level. Add small cells where heatmap drops below −90."

1. Inspect. Click cells for sector orientation, hover backhaul links for capacity.
2. Refine. Move cells, adjust antenna height or tilt, swap band — Jax re-runs the

propagation model.

1. Validate. Coverage check (RSRP and SINR), capacity check against forecast

demand, backhaul-resilience audit.

1. Export. GeoJSON, KML, or vendor-format files from Project → Export.

What Jax is good at, in 5G specifically

• Cell siting under a coverage threshold with street-network and zoning

constraints.

• Sector orientation — proposes azimuths and tilts that maximize coverage per

site.

• Backhaul planning — fiber-first, microwave fallback, with line-of-sight checks

against terrain.

• Spectrum compliance — flags configurations that exceed regional EIRP limits.

Standards

3GPP Release 15 and later, ITU-R P.452 and P.1812 propagation models, FCC Part 27 (US) or equivalent regional spectrum rules.

What it does not do (yet)

• Detailed RAN parameter optimization (PCI planning, neighbor lists — out of scope).
• Core-network function design (handled by NFV / cloud-native platforms).
• Ray-traced indoor coverage.