Wi-Fi 6 is usually sold on a headline speed number, which is close to the least interesting thing about it. The standard was designed to solve a different problem: what happens when thirty devices share one access point, which is the situation in essentially every modern flat. And in January 2026 India opened a large new slice of spectrum to licence-free Wi-Fi, which changes the calculation again.
The names, decoded
The Wi-Fi Alliance introduced generation numbers because the IEEE designations were unreadable. They map like this:
- Wi-Fi 4 — 802.11n. 2.4 and 5 GHz, introduced MIMO.
- Wi-Fi 5 — 802.11ac. 5 GHz only, wider channels, downlink MU-MIMO. Still entirely adequate for most homes.
- Wi-Fi 6 — 802.11ax. Both bands. Efficiency-focused; see below.
- Wi-Fi 6E — the same 802.11ax radio, extended into the 6 GHz band.
- Wi-Fi 7 — 802.11be. 320 MHz channels, 4096-QAM, and multi-link operation.
What Wi-Fi 6 actually changed
Wi-Fi is a shared medium: only one device can transmit on a channel at a time, and the rest wait their turn. As device counts rose — phones, laptops, televisions, speakers, cameras, bulbs — the waiting, not the raw link rate, became the bottleneck. Wi-Fi 6’s significant features all attack that.
- OFDMA. The channel is subdivided into smaller resource units so the access point can serve several devices within a single transmission opportunity, instead of handing the whole channel to one device with a tiny packet. This is the single most consequential change, and it is entirely invisible on a speed test with one laptop.
- Uplink MU-MIMO. Wi-Fi 5 could talk to several devices at once; Wi-Fi 6 can also listen to several at once, which matters as soon as devices are sending rather than receiving.
- BSS colouring. Transmissions are tagged so a device can tell a neighbour’s network from its own and stop deferring to traffic that will not collide with it. In an apartment block where a scan finds twenty-five networks, this is a real gain.
- Target Wake Time. The access point schedules when battery devices need to wake. It does nothing for throughput and a great deal for the battery life of sensors and smart-home gear.
- 1024-QAM. Packs more bits into each symbol — the part that produces the headline speed figure. It only applies at short range with a strong, clean signal.
Bands: 2.4, 5 and now 6 GHz in India
The band matters more than the generation for everyday behaviour.
- 2.4 GHz — travels furthest and through walls best, but is narrow, crowded, and shared with Bluetooth, microwave ovens and every neighbour. Only three non-overlapping 20 MHz channels exist. Good for range and for cheap IoT devices; poor for throughput.
- 5 GHz — many more channels and much more capacity, with shorter range and weaker wall penetration. The right band for anything that matters.
- 6 GHz — new, wide, and until recently unavailable in India.
On 20 January 2026 the Ministry of Communications notified rules exempting low-power and very-low-power wireless access systems in the lower 6 GHz band — 5925 to 6425 MHz — from licensing, on a non-interference, non-protection, shared basis. This followed draft rules circulated in May 2025. The rules also raised the indoor power spectral density limit to 11 dBm/MHz, which is what makes very wide channels usable at a sensible range rather than only across a room. Use of the band is restricted in some contexts — including in vehicles, drones and aircraft below 10,000 feet, and on oil platforms.
Practically, this means Wi-Fi 6E and Wi-Fi 7 hardware sold in India can now use 6 GHz legitimately, on spectrum with no legacy Wi-Fi 4 or 5 devices cluttering it. For a dense apartment building, a clean band is worth more than a faster modulation scheme.
Is Wi-Fi 7 worth waiting for?
Wi-Fi 7’s headline items are 320 MHz channels (double Wi-Fi 6E’s maximum), 4096-QAM, and multi-link operation — a client maintaining connections on two bands simultaneously and using both, which improves reliability and latency rather than just peak rate. MLO is the genuinely interesting one.
But 320 MHz channels only exist where there is 320 MHz of clean spectrum to use, which in India means 6 GHz, and both the access point and the client device must support it. If your phone and laptop are Wi-Fi 6, a Wi-Fi 7 router gives you a Wi-Fi 6 experience.
What actually improves a home network
In rough order of impact per rupee:
- Move the access point. Central, high, out in the open. Not in a metal cabinet, not on the floor behind the television, not in the corner of the utility balcony where the fibre happens to enter. This is free and routinely doubles coverage.
- Add access points rather than power. Two modest access points in the right places beat one expensive one in the wrong place. Range is limited by what your phone can transmit back, not only by what the router shouts.
- Wire the backhaul. A mesh node connected by Ethernet is a different class of device from one relaying over the air. If a cable can be run, run it.
- Use 5 or 6 GHz for anything important, and leave 2.4 GHz for devices that need range more than speed.
- Be careful with very wide channels. A 160 MHz channel is faster in isolation and more collision-prone in a crowded building. In an apartment block, narrower and cleaner often wins.
- Use WPA3 where every client supports it.
Wi-Fi cannot exceed what arrives at the building
A router is not a source of bandwidth. If the connection into the premises delivers 100 Mbps, no access point on the market will produce more than 100 Mbps of internet — the remaining capacity only helps for traffic between devices inside the house, and for keeping many devices served at once.
The corollary is also true and more commonly the problem: a fast line behind a poorly placed router measures as a slow line. Before concluding anything about your plan, run a wired test — that one step resolves a large share of “my internet is slow” complaints.
Where Wi-Fi is a business problem rather than a household one — an office, a campus, a hospitality venue — the fix is design and management rather than a better box: site survey, deliberate channel planning, wired backhaul, and monitoring. That is the difference between consumer gear and a managed Wi-Fi service.