Why so many wireless technologies?
Every wireless technology is a compromise between four numbers: how fast you can move data, how far the signal reaches, how quickly the round-trip happens, and how much battery the device burns. Push one up and you push another down. There is no physical way to get gigabit speeds, kilometre range, sub-millisecond latency, and 10-year battery life out of one radio.
So engineers have built different stacks optimised for different points on that trade-off surface. The three families that matter for businesses today are Wi-Fi, cellular (3GPP), and low-power wide-area (LPWAN, of which LoRa is the best-known).
Side-by-side comparison
| Tech | Typical speed | Range | Latency | Battery (sensor) | Best for |
|---|---|---|---|---|---|
| Wi-Fi 6 (ax) | 500–2,000 Mbps | ~30 m indoors | 5–20 ms | Days–weeks | Office Wi-Fi, dense user environments |
| Wi-Fi 7 (be) | 1–5 Gbps | ~30 m indoors | 1–10 ms | Days–weeks | High-throughput offices, AR/VR, dense venues |
| 4G LTE | 20–150 Mbps | Cell-tower coverage | 30–80 ms | ~Days (active) | Mobile phones, fallback for fixed sites |
| 5G (sub-6) | 100–1,000 Mbps | Cell-tower coverage | 10–30 ms | ~Days (active) | Mobile, FWA, private campus networks |
| 5G (mmWave) | 1–4 Gbps | ~200 m line-of-sight | 5–15 ms | n/a | Stadiums, fixed wireless access |
| LoRaWAN | 0.3–50 kbps | 2–15 km (urban–rural) | seconds | 5–10 years | Outdoor IoT sensors, utility metering |
| NB-IoT | 10–250 kbps | Cellular footprint | 1.5–10 s | 5–10 years | Cellular-grade IoT, asset tracking |
| LTE-M (Cat-M1) | 0.3–1 Mbps | Cellular footprint | 50–250 ms | 2–5 years | Mobile IoT, low-bandwidth voice |
Wi-Fi 6 (802.11ax) — the current office baseline
Wi-Fi 6 is the standard you should specify for any new office Wi-Fi project in 2026. Compared with Wi-Fi 5 (802.11ac), it isn't dramatically faster in raw single-device throughput — but it handles dense environments dramatically better, which is what real offices actually are.
The key improvements:
- OFDMA. A single transmission can serve multiple devices at once instead of taking turns. Massive improvement when 80 people are on Teams calls in an open-plan office.
- 1024-QAM. Higher-order modulation means more bits per radio symbol. Roughly +25% throughput per stream.
- Target Wake Time (TWT). Devices and APs negotiate exactly when each device needs to wake up. Big battery win for phones and IoT.
- 6 GHz support (Wi-Fi 6E). A whole new band with no legacy congestion — but only on Wi-Fi 6E and newer hardware, and Singapore's 6 GHz allocation is narrower than the US or EU's.
Wi-Fi 7 (802.11be) — the new frontier
Wi-Fi 7 starts to appear in enterprise APs and high-end devices through 2024–2026. Step changes:
- 320 MHz channels in the 6 GHz band (vs 160 MHz max in Wi-Fi 6). Doubles raw throughput.
- Multi-Link Operation (MLO). A single device can use multiple bands (2.4 / 5 / 6 GHz) simultaneously — better aggregate throughput and seamless fallback when one band is congested.
- 4096-QAM. Another 20% efficiency bump on top of Wi-Fi 6.
For most offices, Wi-Fi 6 (or 6E) remains the sensible spec for new installs in 2026 — Wi-Fi 7 makes sense if you're building for high-density video collaboration, AR/VR, or just want to future-proof a 5–7-year cabling and AP refresh. The supporting Ethernet infrastructure (2.5 / 5 / 10 GbE switch ports, Cat6A cabling) is at least as important as the AP standard.
4G LTE & 5G — the public mobile networks
The big three Singapore mobile networks — Singtel, StarHub, M1 — operate 5G nationwide on sub-6 GHz spectrum, with 4G LTE as the universal fallback. For most businesses, public cellular is relevant in three ways:
- Mobile phones and devices in the field. Drivers, technicians, sales people. 5G data plans are now the norm.
- Fixed Wireless Access (FWA). A 5G modem instead of a fibre line. Useful for temporary sites, sites where civil works for fibre would be slow or expensive, or as a fast-to-deploy backup link for a fixed-line WAN.
- IoT. Cellular-connected IoT devices (vehicles, vending machines, kiosks) usually use NB-IoT or LTE-M — see below.
Singapore has also allocated mmWave 5G spectrum (26 GHz) but commercial deployments are limited; most "5G" you'll see is sub-6 GHz, which offers the speed/coverage balance that matters most.
Private 5G — campus networks for industry
A growing pattern for industrial sites, ports, and large logistics campuses: deploying your own private 5G network across your premises, using spectrum either licensed from the regulator or leased from a telco. IMDA has issued private network spectrum allocations and there are live deployments at PSA (port operations), Changi Airport, and several manufacturing sites.
Private 5G makes sense when you have a large outdoor or indoor-industrial area where Wi-Fi doesn't reach reliably, lots of moving devices (forklifts, AGVs, vehicles), and a need for guaranteed performance and security separate from public networks. It is not a Wi-Fi replacement for offices — the device cost, complexity, and per-cell cost are far higher.
LoRa & LoRaWAN — long-range, low-power IoT
LoRa is a physical-layer radio modulation invented by Semtech, designed for sending tiny amounts of data very efficiently over long distances. It's unusual for trading bandwidth — almost completely — for range and battery life.
LoRaWAN is the open networking protocol that sits on top of LoRa and defines how devices talk to gateways, how gateways relay to the cloud, and how encryption / device management works.
Typical LoRaWAN deployment:
- End devices (battery-powered sensors) transmit a small payload — temperature, water level, door state, motion event — every few minutes to a few hours.
- Gateways (high up — rooftops, telecom towers) listen across kilometres and forward to a network server.
- The network server deduplicates, decrypts, and forwards to an application server (often via MQTT) for processing.
Range: 2–5 km in dense urban, 5–15 km in suburban/rural, 30+ km in clear line-of-sight conditions. Bandwidth: up to ~50 kbps but typically a few hundred bits per message. Battery: a small AA-powered sensor reporting every 10 minutes can last 5–10 years.
Use cases that fit: utility metering (water, gas), agricultural sensors, asset tracking, smart-city deployments, building automation, environmental monitoring. Not fit-for-purpose: anything bandwidth-hungry, latency-sensitive, or that needs to send commands to devices in real time.
NB-IoT & LTE-M — cellular IoT
The 3GPP cellular industry's answer to LoRa: narrow-band variants of LTE designed for IoT. Both are deployed by Singapore's mobile carriers as a layer on top of existing cellular networks.
NB-IoT (Narrowband IoT) — extremely low power, very small data, optimised for fixed deployments (smart meters, parking sensors). Coverage matches the carrier's normal cellular footprint plus deep-indoor / underground penetration.
LTE-M (LTE Cat-M1) — slightly higher bandwidth and lower latency, supports mobility (handover between cells), can carry VoLTE voice. Good for asset trackers, wearables, in-vehicle telematics.
vs LoRaWAN: cellular IoT comes with operator-managed coverage, SIM-based identity and billing, and global roaming — but with per-device subscription costs and a hard dependency on the carrier. LoRa is private and free-to-run but requires you to deploy gateways yourself.
How to choose — a decision sketch
- Indoor users on laptops/phones? Wi-Fi 6 (or Wi-Fi 7 if budget allows).
- People moving around outdoors with phones? Public 4G/5G.
- Need a fast WAN line installed in days, not months? 5G Fixed Wireless Access.
- Large industrial site, lots of moving machines, predictable performance needed? Private 5G or industrial Wi-Fi 6.
- Battery-powered sensors, send a few bytes every few minutes, no near-real-time needs? LoRaWAN (you run the gateways) or NB-IoT (the carrier does).
- Mobile asset tracking, occasional voice? LTE-M.
The Singapore situation
- Wi-Fi: all major enterprise vendors (Cisco, Aruba, Juniper Mist, Ruckus, Ubiquiti, Huawei) are well-represented through local distributors and system integrators.
- Public 5G: nationwide coverage from Singtel, StarHub, M1; private 5G allocations have been issued by IMDA on a case-by-case basis.
- LoRaWAN: public LoRaWAN networks operate in Singapore (UnaBiz, NTT and others), and private deployments are common for buildings and industrial sites.
- NB-IoT / LTE-M: available from all three mobile carriers.
Where to go next
- What IoT actually looks like: IoT for Business: Architectures, Protocols, and Real Use Cases.
- Global picture: Global Connectivity — what happens once your wireless data hits the wider internet.
- Networking basics: LAN vs WAN Basics if you came here from the wireless side and need the wired picture.
Browse wireless & IoT vendors in Singapore
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