5G RedCap Extends Connectivity Planning for Industrial Infrastructure

Utilities and oil and gas operators deploy connected infrastructure for 10 to 15 years. In a technical blog article, Semtech explains how 5G Reduced Capability, or 5G RedCap, can reduce migration risks compared with 5G enhanced Mobile Broadband, or eMBB, through LTE fallback, lower power demand and simpler integration.

Long Asset Lifecycles Create Network Risk

Smart metering, pipeline monitoring and substation automation systems are expected to operate for a decade or more. Cellular connectivity, however, is often selected according to current coverage and device availability rather than the full infrastructure lifecycle.

4G LTE remains mature and widely deployed, with no imminent shutdown announced. The earlier 2G and 3G transitions nevertheless showed that network retirement is usually gradual. Support and investment decline, compatible hardware becomes harder to source, and operators can eventually face a forced upgrade.

For large device fleets, the cost extends beyond replacing a modem or router. Field service, access to remote or hazardous locations, operational downtime, reconfiguration and recertification can make an unplanned transition expensive and complex.

Why Full 5G eMBB Is Often Oversized

5G enhanced mobile broadband is designed for high-throughput applications. Smart meters, pressure sensors and remote terminal units typically require less bandwidth and simpler hardware.

For these applications, eMBB can add higher equipment costs, greater power consumption and more complex antenna configurations without providing a proportional operational benefit. A forced migration from LTE to full 5G is therefore difficult to justify while 4G infrastructure remains available.

RedCap Bridges LTE and Full 5G

5G Reduced Capability was introduced in 3GPP Release 17 for Industrial IoT applications. Its relevant comparison is therefore not only with full 5G, but also with the LTE Cat-4 and Cat-6 systems currently used across industrial infrastructure.

According to Semtech, RedCap devices carry a limited upfront premium over comparable LTE equipment. Across a deployment lifecycle of approximately ten years, avoiding an additional network migration can change the total cost of ownership calculation.

RedCap also reduces hardware and energy requirements compared with eMBB. Semtech’s AirLink RX400 and EX400 routers consume less than one watt while idle. RedCap uses two antennas, matching typical LTE configurations, while full 5G eMBB requires four. This can simplify integration into existing industrial enclosures and form factors.

Peak data rates reach up to 220 Mbps. Tests cited by Semtech on T-Mobile’s network recorded download speeds approximately 67 percent above LTE Cat-4 and around twice the throughput under weak-signal conditions. This is relevant for equipment installed at the edges of cellular coverage.

RedCap also uses the lower-latency capabilities of the 5G core network. This supports applications such as industrial monitoring and video surveillance without requiring the performance and hardware overhead of full 5G eMBB.

LTE Fallback Enables a Gradual Migration

The AirLink RX400 and EX400 include LTE fallback. Operators can deploy the routers on existing LTE networks and use 5G RedCap as compatible coverage expands.

For system integrators and solution providers, this approach can reduce immediate redesign requirements and create a defined migration path for mixed-generation fleets. Rollout sequencing, configuration validation and fleet management nevertheless remain essential, particularly across hundreds or thousands of distributed devices.

Existing LTE installations do not automatically require replacement. Their age, location and remaining service life should determine whether migration is economically appropriate. For new infrastructure expected to operate well into the next decade, however, connectivity longevity becomes a central design criterion.

Read the full technical analysis on the Semtech website:
https://www.sierrawireless.com/iot-blog/beyond-4g-how-5g-redcap-connects-infrastructure-for-the-long-term/