LPWAN Range Calculator

Compare LPWAN range using link budget, path loss, fade margin, obstacles, and practical planning caps.

animation

lpwan

wireless

range

link-budget

beginner

A learner-ready LPWAN range animation with range rings, link-budget waterfall, scenario presets, technology comparison, quick reference, and technical accuracy notes.

Animation LPWAN Range Link Budget

LPWAN Range Calculator

Compare LoRaWAN, Sigfox, NB-IoT, and LTE-M with the same deployment assumptions. The lab separates radio link budget from fade margin, obstacle loss, environment, and practical planning caps so the estimate stays useful instead of overconfident.

LoRaWAN Focus technology

15.0 km Planning range

136 dB Usable path loss

Sigfox Longest under settings

TrySelect LoRaWAN at 900 MHz in Dense urban, reserve 10 dB fade margin, and compare with NB-IoT at 1800 MHz.

ObserveUsable path loss falls by the 10 dB reserve and obstacle loss; Planning range contracts under the urban exponent even when raw link budget is high.

ExplainWith a 10 dB fade margin, maximum path loss equals EIRP plus receive gain minus sensitivity, loss, and margin; the log-distance exponent converts budget into range.

Technical boundariesRange rings omit terrain, antenna height/pattern, fading probability, interference, operator coverage, duty/dwell limits, network policy, packet error, mobility, and empirical site calibration.

Colour keylorawan identitycurrent / primaryreference / datasuccesscautionerror / failure

1. Radio Start with TX power, antennas, losses, and receiver sensitivity.

2. Margin Reserve fade margin and subtract obstacle or indoor loss.

3. Environment Use a path-loss exponent that matches rural, urban, or indoor conditions.

4. Cap Apply practical planning caps from duty cycle, regulations, and network policy.

5. Compare Range is only one dimension; payload, latency, mobility, and ownership matter.

Range Rings and Link Budget

Rings show planning range for each LPWAN technology. The highlighted ring follows the selected focus technology.

Link Budget

Radio budget before deployment safety margins.

--

Path Loss

Log-distance teaching model using frequency and environment exponent.

--

Planning Cap

Stops a clean formula from promising unrealistic field coverage.

--

Result

Final range is the smaller of model range and planning cap.

--

Range Controls

Try scenarios first, then adjust the assumptions that usually dominate field range.

Focus technology -- Highlight one technology while still comparing all four.

Environment -- Environment sets path-loss exponent and planning cap.

Frequency band -- Higher frequency normally increases path loss for the same distance.

TX power offset -- Represents allowed power, PA setting, or regional limit differences.

Antenna gain total -- Sum of gateway and device antenna gain after orientation losses.

Fade margin -- Reserve for fading, weather, body loss, installation variation, and aging.

Obstacle loss -- Buildings, vegetation, terrain blockage, or deep indoor penetration.

Payload pattern -- Payload pattern does not change RF path loss, but it changes practical fit.

LPWAN Range Quick Reference

Core terms

Link budget: TX power plus gains minus receiver sensitivity and losses.
Fade margin: safety reserve for real-world variation.
Path-loss exponent: how quickly signal decays in an environment.
Planning cap: practical upper bound for a deployment assumption.

Technology pattern

LoRaWAN: private or public unlicensed networks, flexible data rate.
Sigfox: very small uplinks and operator network model.
NB-IoT: deep coverage and carrier-managed cellular IoT.
LTE-M: better mobility and data rate, usually lower range than NB-IoT.

Common mistakes

Using receiver sensitivity without fade margin.
Ignoring indoor or vegetation loss.
Comparing unlicensed and carrier networks only by distance.
Treating a one-link formula as a coverage guarantee.

Field planning

Use drive tests or site surveys for final planning.
Check local duty-cycle and transmit-power rules.
Reserve more margin for battery devices in unknown orientation.
Validate downlink needs, not only uplink reach.

Technical Accuracy Notes

Range is a planning estimate

This lab uses a log-distance model for learning. Real LPWAN range depends on terrain, antenna height, clutter, interference, gateway density, and operator configuration.

Sensitivity is data-rate dependent

LoRa spreading factor, NB-IoT repetition, bandwidth, and coding settings change sensitivity and airtime. The values here are representative teaching defaults.

Carrier coverage is not only RF

NB-IoT and LTE-M also depend on carrier deployment, roaming, SIM profile, network policy, and supported bands.

Uplink and downlink can differ

Gateways and base stations often have better antennas than devices. A link that works uplink may still have downlink duty-cycle or scheduling limits.

Practice Prompts

Make range collapse

Switch to indoor, add 25 dB obstacle loss, and raise fade margin. Explain why receiver sensitivity no longer dominates.

Compare unlicensed and cellular

Use rural settings, then decide whether a private LoRaWAN gateway or a carrier NB-IoT plan is more appropriate.

Check a mobile asset

Choose the mobile scenario and compare LTE-M to NB-IoT. Discuss why mobility and latency may matter more than maximum range.

Plan a sensor

Pick a payload pattern and record the technology, range estimate, and margin you would verify in a field survey.

LPWAN Technology Selector Choose based on ownership, payload, mobility, and network availability. Wireless Range Calculator Compare link-budget thinking across broader IoT radios. LoRaWAN ADR See how LoRaWAN changes data rate and margin over time. NB-IoT Power Saving Connect range planning to battery and cellular power states.