# 5G vs Wi-Fi 7: When to Use Each in Enterprise Deployments

The 5G-versus-Wi-Fi argument has been re-litigated every generation since the early 2010s. With Wi-Fi 7 (IEEE 802.11be) shipping in volume through 2025–2026 and private 5G CBRS deployments now mature, the question is more concrete than it has ever been. The answer is not religious — it is about what you are connecting, where, and how.

This is the breakdown for people who actually deploy networks.

What Wi-Fi 7 Actually Brings

Wi-Fi 7 is the first generation where the gains over the previous one are not marketing inflation:

  • 320 MHz channels in 6 GHz, doubling 802.11ax. Where regulators allow the full 6 GHz band (US, Canada, much of LATAM, Korea), this is real. In Europe and many Asian markets, 6 GHz is partial — typically 500 MHz of 1200 MHz available — which caps 320 MHz channel deployment to a handful of channels.
  • 4096-QAM at the top MCS. Adds about 20% to peak throughput over 1024-QAM, but only at very high SNR. In practical office environments you rarely hit it.
  • Multi-Link Operation (MLO). This is the actual game-changer. A client and AP can use 2.4 + 5 + 6 GHz simultaneously, either for aggregation (more throughput) or for redundancy (lower latency tail). MLO is what makes Wi-Fi 7 the first generation with a credible deterministic-latency story for the enterprise.
  • Preamble puncturing lets a wide channel survive a narrow interferer instead of falling back to a smaller channel.

Real Wi-Fi 7 throughput for a single high-end client at 5 m line-of-sight is 3–5 Gbps. Tail latency under load with MLO is 5–10 ms — not the 1 ms marketing number, but consistent.

What 5G Brings That Wi-Fi Does Not

  • Licensed or coordinated spectrum. CBRS PAL or fully licensed 5G operates in spectrum that is not shared with the world. Interference is bounded.
  • Mobility. Real handover between cells with sub-50 ms interruption, working at vehicular speeds. Wi-Fi roaming with 802.11r/k/v is closer than it used to be but is still measured in hundreds of milliseconds in practice.
  • Outdoor and large-area coverage. A single mid-band 5G cell covers what would take 20+ Wi-Fi APs.
  • SIM-based identity and policy. Centralized auth with strong identity, network slicing for QoS classes, integration with operator/MVNO billing if relevant.
  • Predictable scheduler behavior. 5G schedules every transmission. Wi-Fi 7 with OFDMA improves on contention but is fundamentally still listen-before-talk.

Cost Reality

For an indoor office of 50,000 sq ft:

  • Wi-Fi 7: 30–50 APs at $1,200–2,000 each, plus controller and cabling. Total capex roughly $80k–150k. Opex is your IT team.
  • Private 5G (CBRS, mid-tier vendor): 8–15 small cells at $5,000–15,000 each, plus a packet core (subscription or self-hosted), plus integration. Total capex $200k–500k. Opex includes someone who understands SIMs, mobile cores, and 3GPP.

For outdoor or industrial sites, the capex curve flips — Wi-Fi outdoor coverage at scale becomes painful, and 5G's cell radius wins.

Where Each Actually Wins

Wi-Fi 7 wins:
  • Indoor offices, schools, hotels, retail. Density of clients per square meter is high, mobility is foot-speed, devices already have Wi-Fi. The math never favors 5G here unless you have a specific reason.
  • Anywhere device support matters. Laptops, phones, tablets, IoT — they almost all have Wi-Fi. Cellular-capable laptops and IoT are still the minority.
  • Cost-sensitive deployments. Even the most expensive Wi-Fi deployment is cheaper than a small private 5G.
  • Predictable indoor latency under MLO. For AR/VR collaboration, MLO has caught up.
Private 5G wins:
  • Manufacturing floors with mobile equipment. AGVs, autonomous forklifts, mobile robots that move at non-trivial speed across a large area. Wi-Fi roaming will burn you.
  • Outdoor industrial — ports, mines, large yards. A few cells cover what would take dozens of outdoor APs.
  • Mission-critical with strict SLA. Licensed spectrum gives you bounded interference. Wi-Fi shares 6 GHz with anything that wants to use it.
  • Large-scale IoT with cellular modules. Asset tracking, fleet, utility meters — the modules are cellular by default.
  • Hospitals with mobile clinical workflows. Medical carts and devices roaming across multiple buildings benefit from 5G mobility.

Hybrid Is the Honest Answer

In most real enterprises the answer is both. Wi-Fi 7 for the office and indoor common areas, private 5G overlaying the manufacturing floor or outdoor yard. Treat them as separate networks with policy at the application layer rather than trying to bridge them.

The pattern that fails: deploying private 5G as a Wi-Fi replacement in an office. The cost is wrong, the device support is wrong, and the operational model doesn't match what enterprise IT teams know.

The pattern that wins: identifying the specific workloads that need 5G's properties — mobility, deterministic SLA, outdoor coverage, licensed spectrum — and deploying it where those properties matter. Wi-Fi 7 covers everything else.

A Decision Test

Ask three questions about the workload:

  1. Does the device move faster than walking pace, or across more than one building?
  2. Is the workload mission-critical with an SLA that contractually matters?
  3. Are the devices already cellular-capable, or can they be?

Three yeses: 5G. Two yeses: evaluate. One or zero: Wi-Fi 7.

That is the entire framework. The rest is implementation.