The world of wireless networks is reaching a point where older standards are beginning to give way to the onslaught of new technologies. Users are increasingly noticing that even a powerful router can't provide stable speeds for all devices simultaneously. This is especially noticeable in apartments with numerous devices connected to a single access point. This is where the evolution of communication protocols comes into play, and the issue of intergenerational differences becomes critical for a comfortable life.
Many people still use equipment that operates at standard frequencies. 802.11ac, which was marketed as Wi-Fi 5. However, technology manufacturers are already implementing support for the new generation en masse. 802.11ax, known as Wi-Fi 6. Understanding the differences between them will help you avoid overpaying for unnecessary features or, conversely, skimping on features that will lead to constant lag and connection drops.
In this article, we'll delve into the technical nuances hidden behind the dry numbers in specifications. You'll learn why an old router can be slow even with a fast plan from your provider. We'll also discuss compatibility and the feasibility of upgrading your equipment right now.
What are Wi-Fi 5 and Wi-Fi 6: Basic Definitions
First, it’s worth understanding the terminology to avoid confusion. Wi-Fi 5 — is the commercial name for the IEEE 802.11ac standard, which became dominant in 2013-2014. It introduced support for wide channels and operation exclusively in the 5 GHz band, allowing for a significant increase in throughput compared to its predecessor.
On the other side, Wi-Fi 6 (802.11ax) emerged in 2019 as a response to increasing device density. The primary goal of this standard was not so much to increase peak speeds for a single client, but to optimize data transmission for multiple simultaneous users. This represents a fundamental shift in wireless network design philosophy.
⚠️ Attention: Older devices (smartphones and laptops from 2015 and earlier) may not support the new standard. They will still work on a Wi-Fi 6 network, but at the speeds of their generation. Check the specifications of your devices before buying an expensive router.
It's important to understand that switching to a new protocol requires support from both the router and the receiving device. If you buy a top-of-the-line router, but your laptop is five years old, you won't notice a difference in connection speed between the two devices. However, overall network stability may improve thanks to new router algorithms.
OFDMA and MU-MIMO technologies: the heart of the new standard
The most significant technical difference is the implementation of technology OFDMA (Orthogonal Frequency-Division Multiple Access). In previous generations, the router transmitted data to each device in turn, even if the packet was small (for example, a message in a messenger). This created queues and delays. OFDMA allows dividing a single channel into many smaller subchannels and transmitting data to multiple devices simultaneously within a single time slot.
The second important element is improved MU-MIMO (Multi-User Multiple Input Multiple Output). In the Wi-Fi 5 standard, this technology only worked in the router-to-client direction and supported up to four streams. In Wi-Fi 6, MU-MIMO support has become bidirectional (both upstream and downstream) and allows for up to eight simultaneous streams. This is critical for homes where video conferences, gaming, and 4K video are simultaneously running.
Imagine a truck that previously only delivered to one address per trip, even if it was carrying a small box. Now, it can visit several addresses in a single trip or load a single large container for a single customer. This is the essence of traffic optimization in the new standard.
How does OFDMA reduce ping in games?
OFDMA technology reduces latency, allowing small game packets to be transmitted without waiting for the entire channel to become available for larger files. This makes the connection more responsive, even if someone in the family is watching YouTube in 4K.
Implementing these features requires a more powerful processor inside the router. Cheap models may claim to support the standard but struggle to handle the load with advanced features enabled. Therefore, when choosing equipment, pay attention not only to the logo on the box but also to reviews of the chipset's performance.
Speed characteristics and frequency ranges
When it comes to speed, specifications often sound impressive, but reality often changes. Wi-Fi 5's theoretical maximum speed reaches 3.5 Gbps, while Wi-Fi 6 can reach 9.6 Gbps. However, these figures were obtained under ideal lab conditions using the maximum number of antennas and channel width.
In real-world home environments, stability and spectrum efficiency are more important than peak speed. The new standard operates more effectively in noisy environments where neighboring routers create interference. The algorithm BSS Coloring (coloring of basic service sets) allows the router to ignore signals from neighboring networks if they are marked with a different "color", which reduces the level of interference.
It's worth noting the 2.4 GHz band. In Wi-Fi 5, this band was often neglected and slow. In Wi-Fi 6, it received the same improvements (OFDMA, 1024-QAM) as 5 GHz. This means that older smart bulbs and sensors operating on 2.4 GHz will communicate with the router more reliably and quickly.
| Characteristic | Wi-Fi 5 (802.11ac) | Wi-Fi 6 (802.11ax) |
|---|---|---|
| Maximum speed | up to 3.5 Gbps | up to 9.6 Gbps |
| Access technology | OFDM | OFDMA |
| MU-MIMO | Downlink only (up to 4) | Uplink and Downlink (up to 8) |
| Modulation | 256-QAM | 1024-QAM |
| Energy efficiency | Standard | TWT (Target Wake Time) |
As the table shows, productivity gains are achieved through a combination of measures. Modulation is particularly noteworthy. 1024-QAMIt allows more data to be encoded in a single signal, resulting in a speed increase of approximately 25% compared to 256-QAM used in the previous generation, provided the signal is good.
Energy Efficiency and Target Wake Time
One of the hidden but extremely important features of the new standard is technology TWT (Target Wake Time). It allows the router and connected devices to agree on precise times to turn the radio module on and off for data transmission. The device can "sleep" most of the time, waking up only during a designated time slot.
This fundamentally changes the approach to the autonomy of IoT devices. Door sensors, smart locks, and trackers can operate on a single battery for years instead of months. For smartphones, this also means less battery drain in standby mode when connected to the home network.
In older networks, devices often had to constantly "listen" to the airwaves or frequently check for beacon frames to check for data. With the introduction of TWT, this process becomes strictly regulated and energy-efficient. This is especially relevant for modern apartment buildings, where hundreds of neighboring networks may be in the airwaves.
However, it's important to note that TWT requires support from the client operating system (Android, iOS, Windows). Most modern operating systems have learned to properly interact with new-generation routers, but the feature won't work on older devices.
Hardware compatibility and backward support
Users' main fear when upgrading their devices is incompatibility. The good news is that Wi-Fi standards are fully backwards compatible. A Wi-Fi 6 router will seamlessly connect to a Wi-Fi 4 laptop or a Wi-Fi 5 smartphone.
When you connect an older device, the network will automatically switch to the appropriate protocol. You won't lose internet access, but you also won't get the benefits of the new standard on that particular device. This means you can migrate to Wi-Fi 6 gradually, without having to replace all your electronics at once.
However, there is a caveat with security settings. Wi-Fi 6 requires the use of more modern encryption protocols, ideally WPA3Although WPA2 is supported, to fully realize the data protection potential, it is recommended to update passwords and security settings in your router's personal account.
☑️ Are you ready for Wi-Fi 6?
It's also important to check the ports on the router itself. There's no point in buying a super-fast Wi-Fi 6 router if its WAN port (for the ISP cable) only offers 100 Mbps. Gigabit ports are required to unlock the full potential. 10/100/1000 Mbps.
When does it make sense to upgrade to Wi-Fi 6?
The purchase of new equipment should always be justified by real needs. If you live alone, have one laptop and smartphone, and your internet plan doesn't exceed 100 Mbps, you likely won't notice the difference between Wi-Fi 5 and Wi-Fi 6 in everyday browsing.
It's a different story if you have a large family or are an avid multimedia user. If you:
- 📺 Watch 4K video simultaneously on a TV, laptop, and tablet.
- 🎮 You play online games and require minimal ping.
- 🏠 There are more than 15-20 connected devices in the apartment (including a smart home).
- 🏢 You use the network for an office or coworking space with a high client density.
In these cases, an upgrade will yield noticeable results. The network will become more fluid, micro-freezing during video calls will disappear, and downloading large files will no longer slow down the entire internet connection in your home.
⚠️ Attention: Make sure your internet service provider offers speeds above 500-800 Mbps. If your plan is capped at 100 Mbps, a Wi-Fi 6 router won't speed up your internet speed; it will only improve stability within your local network.
The transition is also worthwhile if you plan to purchase new equipment in the next couple of years. New flagship smartphones and laptops are already widely equipped with Wi-Fi 6E and Wi-Fi 7 modules. It makes sense to prepare your infrastructure in advance to avoid having to upgrade your router again in a year.
The Future of Wireless Networking: Wi-Fi 6E and 7
When talking about the current generation, we cannot help but mention its extended versions. Wi-Fi 6E — This is the same Wi-Fi 6, but with the addition of a new 6 GHz band. It's interference-free, as virtually no one uses it yet, but it requires appropriate device support.
And already visible on the horizon Wi-Fi 7 (802.11be), which promises even wider channels (320 MHz) and even higher modulation. However, for the average user, the difference between 6 and 7 will be less noticeable than the jump from 5 to 6. For now, the primary focus should be on high-quality coverage and stability.
In conclusion, the choice between Wi-Fi 5 and Wi-Fi 6 today leans toward the new standard, if your budget allows. Technology is advancing, and a future-proof router will ensure comfort for years to come. The key is to properly assess your needs and the capabilities of your provider's network.
Do I need to change my router if I have a 100 Mbps tariff?
Most likely, no. You won't notice any speed boost. However, if you have many devices and experience connection drops, a new router may improve connection stability thanks to better request queuing algorithms.
Does Wi-Fi 6 work on 2.4GHz?
Yes, the 802.11ax standard operates on both 2.4 and 5 GHz. Moreover, it is on the "busy" 2.4 GHz frequency that the new standard's OFDMA technologies provide the greatest interference reduction benefits.
Will my internet speed be faster after purchasing a Wi-Fi 6 router?
Internet speed is limited by your ISP plan. A router can't create speed out of thin air. It can only distribute the available speed more efficiently among devices and eliminate losses along the wireless path.
Can older phones see Wi-Fi 6 networks?
Yes, they can see the network and connect to it. The router will automatically detect the phone's capabilities and switch to a supported standard (for example, Wi-Fi 4 or 5). The connection will work, but at the speed of the older device.