LTE450 Frequently Asked Questions

LTE450 is Long-Term Evolution (4G LTE) broadband deployed in the 450 MHz frequency band. It uses the same 3GPP standard as public mobile 4G networks but operates at a lower frequency, giving it significantly greater range (50-80 km cell radii) and better building penetration than standard LTE. It is primarily used for utility networks, smart grid communications, and critical infrastructure connectivity.

LTE450 uses the 3GPP LTE standard (the same standard as public 4G) but it is not the same as public 4G. It operates on a different frequency (450 MHz vs typically 800-2600 MHz for public LTE), usually on a private dedicated network rather than a shared public network, and is designed for utility and critical infrastructure applications rather than consumer use.

Free-space path loss increases with frequency. The Friis transmission equation shows that FSPL (dB) increases by 20log10(f). At 450 MHz vs 900 MHz, this gives approximately 6 dB less path loss at 450 MHz – which translates to roughly double the coverage radius. At 450 MHz vs 1800 MHz, the advantage is approximately 12 dB (approximately four times the coverage radius). Building penetration is also better at lower frequencies.

With a 5 MHz channel bandwidth (the typical maximum at 450 MHz), LTE450 achieves 15-30 Mbps downlink and 8-15 Mbps uplink per cell under good conditions. This is substantially slower than public LTE at wider bandwidths (e.g. 20 MHz LTE at 1800 MHz achieves 100-150 Mbps). However, for utility applications – smart metering, SCADA, substation monitoring – the throughput is more than adequate. A single LTE450 cell can serve tens of thousands of smart meters simultaneously.

The primary LTE450 3GPP bands are: Band 31 (452.5-457.5 MHz UL / 462.5-467.5 MHz DL), Band 72 (461-469 MHz UL / 451-459 MHz DL), Band 87 (410-415 MHz UL / 420-425 MHz DL), and Band 88 (412-417 MHz UL / 422-427 MHz DL). All use FDD (Frequency Division Duplex) with 5 MHz channel bandwidth. Band 31 is most common in continental Europe; Band 72 is used in Finland.

Spectrum regulation operates at three levels. Globally, the ITU Radio Regulations (updated at WRCs) identify 450-470 MHz for IMT use. In Europe, CEPT/ECC Decision (09)03 harmonises the band for LTE. At the national level, each country’s regulator (Ofcom in the UK, Bundesnetzagentur in Germany, Traficom in Finland) issues individual spectrum licences.

As of 2025, there is no national LTE450 utility spectrum licence in the UK equivalent to Germany’s 450connect assignment. Ofcom manages the 410-470 MHz band under an existing framework, and discussions between industry, Ofcom and the Department for Energy Security and Net Zero are ongoing. UK utilities currently rely on public mobile MVNO arrangements or legacy private radio for their connectivity needs.

LTE450 typically uses a 5 MHz paired spectrum block: 5 MHz for uplink and 5 MHz for downlink, totalling 10 MHz of spectrum. This is the standard channel bandwidth deployed in Germany (Band 31: 452.5-457.5 MHz + 462.5-467.5 MHz). Narrower allocations of 3 MHz or 1.4 MHz paired are technically possible but reduce throughput.

No. Standard consumer 4G routers support bands 1, 3, 7, 8, 20, 28 – none of which cover 450 MHz. You need an industrial router or M2M module that specifically lists support for the LTE band in use (Band 31, Band 72, Band 87 or Band 88). Always verify with the manufacturer in writing.

Industrial router manufacturers with documented LTE450 band support include Teltonika Networks, Robustel, Westermo, Cradlepoint, and Phoenix Contact. M2M module vendors include Quectel (EC21, EC25, EG25), Telit (LE910), and u-blox. Always specify the exact band required (e.g. “Band 31”) when requesting quotes.

The SIM must be provisioned on the LTE450 network operator’s HSS – not a public mobile operator’s network. The private network operator provides SIM cards (or eSIM profiles) for their customers. For harsh environments, MFF2 (soldered) industrial SIM chips are recommended rather than removable SIM cards.

Far fewer than you might expect. In flat rural terrain, each base station covers 50-80 km radius. For a typical UK electricity DSO service territory of 10,000-50,000 km², 50-500 base stations might provide comprehensive coverage. The exact number depends on terrain, target coverage threshold, and base station height. A radio planning study using propagation modelling software is needed for accurate site count estimation.

Typically 18-36 months for a regional deployment. The main schedule drivers are planning permission for new masts (6-18 months in the UK), backhaul installation, and civil works. Technical commissioning is relatively fast once sites are ready. A small pilot network (5-20 sites) can be deployed in 6-12 months.

The business case combines several elements: avoided cost of public mobile MVNO contracts at scale (which become expensive for large device fleets), operational savings from automated AMI vs manual meter reading, grid efficiency improvements from real-time monitoring and automated fault restoration, and avoided penalties for outage duration. For large utilities with 100,000+ metering points and extensive distribution networks, the business case is typically compelling over a 10-15 year network life.

The primary applications are: smart electricity grid communications (SCADA, AMI, protection relaying, distribution automation), water and gas utility monitoring, critical national infrastructure connectivity, and private IoT/M2M networks for industrial applications. LTE450 is not used for consumer mobile broadband – it is a specialist utility and critical infrastructure technology.

LTE450 can support protection relaying applications requiring latency up to 20 ms (IEC 61850 Class P2/P3) with appropriate QoS configuration. For the most demanding Class P1 applications (4 ms end-to-end), fibre or dedicated microwave links remain the standard. LTE450 is well-suited to the majority of distribution network protection applications where 20 ms is sufficient.

Yes – LTE450 is one of the most effective technologies for AMI backhaul, particularly at scale. Its deep building penetration reaches meters in basements and meter cupboards where public 4G struggles. Its wide coverage minimises the number of base stations needed. LTE-M on LTE450 enables battery-powered meter communications with years of battery life.

Yes. LTE450 private networks use the 3GPP Authentication and Key Agreement (AKA) protocol with AES-128 encryption for the air interface – the same security architecture used by military and government cellular networks globally. A private LTE450 network additionally provides: own HSS (only authorised devices can connect), private APN (traffic isolation from the public internet), IPsec-protected backhaul, and full QoS control. This is substantially more secure than MVNO arrangements on public mobile networks.

On a properly configured private LTE450 network, only devices with SIMs registered in your HSS can authenticate and connect. The HSS authentication uses a 128-bit secret key stored in each SIM and in the HSS – this cannot be duplicated without physical access to the SIM or HSS. Additionally, your private APN ensures traffic is routed only within your network. Unauthorised access requires physical compromise of a SIM or the HSS – substantially harder than attacking a Wi-Fi or public mobile connection.