Smart agriculture presents specific connectivity challenges: large geographic areas, often without fixed broadband infrastructure, devices operating on battery or solar power, and IoT payloads that are small (sensor readings, actuator commands) but require reliable delivery.
Power Budget – The Enabling Constraint
Agricultural IoT devices – soil sensors, weather stations, irrigation controllers, livestock trackers – predominantly operate on battery or small solar panels. The cellular modem’s idle power consumption is frequently the dominant factor in operational battery lifespan. eRedCap’s sub-1W idle characteristic (demonstrated in commercial form by routers like the Semtech AirLink EX400 running Release 17 RedCap) is directly enabling for solar-powered field installations.
LTE Cat-1 modems idle at 2-5W in many implementations. The step down to sub-1W that the 5G RedCap and eRedCap device class enables changes the viability calculation for battery-operated agricultural devices in locations where solar charging provides limited daily energy budget.
Coverage Considerations
Agricultural deployments frequently occur in areas with partial cellular coverage. eRedCap requires 5G SA, and rural 5G SA coverage will lag urban deployment significantly through 2026-2028. For deployments in well-covered areas (peri-urban farms, market gardens near towns), eRedCap is viable near-term. For remote upland or lowland locations, LTE Cat-1bis with an eRedCap migration path is the more pragmatic near-term approach.
Precision Farming Applications
Variable rate application (VRA) systems, GPS-guided machinery monitoring, and drone data relay are higher-bandwidth applications where eRedCap’s ~10 Mbps capability is more directly relevant than NB-IoT or LTE-M alternatives. eRedCap fits between the low-bandwidth LPWAN tier and the high-bandwidth full 5G tier for precision farming data handling.