What is LAN and wireless LAN?
A LAN stands for a local area network. It consists of two or more devices that are connected by a physical cable or wireless connection in a certain location. Conversely, a WAN, or a wide area network, covers multiple geographical areas.
The most familiar example of WAN is probably the internet.For a WiFi router, LAN ports are designed for local connection while a WAN port is used to access the internet.By definition, WLAN—wireless local area network —is a subset of LAN.
Though WLAN and WiFi are sometimes used interchangeably, they’re actually quite different things. WiFi more accurately refers to a method of implementing a wireless local area network.
What is IEEE 802.11?
The 802.11 is a globally-used specification for wireless LAN networking developed and maintained by the IEEE (Institute of Electrical and Electronic Engineers).
The standard defines how wireless communication works and aims to improve wireless network performance. The 802.11 standard has gone through several updates since initial release in 1997, and now it is a standard with a set of developed amendments, such as 802.11n, 802.11ac, and 802.11ax.
Usually, the newer versions are designed to be backward compatible with prior versions. All devices in a WLAN should meet the same 802.11 specification, which indicates the oldest 802.11 amendment device would be the weakest part of the whole wireless network.
What is Mesh WiFi?
Mesh WiFi is a whole-home WiFi system built to eliminate dead zones and to provide uninterrupted WiFi throughout your home. In a mesh WiFi network, multiple network nodes work together to form a single, unified network that shares the same WiFi settings.
This unified WiFi system provides your entire home with WiFi coverage. A Mesh WiFi network has several benefits, such as…
1) Seamless Roaming
Mesh devices share the same wireless network name and password.
You will always stay connected to your network no matter where you go in your home. Switching from one mesh node to another is so smooth that it’s unnoticeable even when you’re streaming.
2) Adaptive Routing
Working as a unified WiFi system, your phone or tablet automatically connects to the fastest mesh device as you move through your home.
If one mesh node has an issue, the system will automatically reroute data via the other devices to make sure you stay online.
3) Easy Setup and Management
Just set up a mesh router in minutes through the Deco app and connect other mesh devices to it.
These devices will automatically copy their WiFi settings. What’s more, you can manage all devices in the mesh network simply by managing the central node (main router). No need to repeat WiFi configurations or manage connected clients on each device.
What is Wi-Fi 6?
The 802.11 standard is an evolving specification family. However, it is too complicated for non-technical users to tell the difference. That is why the Wi-Fi Alliance created a naming convention. The new naming scheme can help increase public recognition of technological advancements.
By using the generation names, consumers can easily identify the Wi-Fi capability of their devices and wireless network connections. The generation names now are Wi-Fi 4, Wi-Fi 5, and Wi-Fi 6, each referring to a corresponding Wi-Fi technology.
Wi-Fi 6 is the latest generation of Wi-Fi technology, which was made in response to the growing number of Wi-Fi clients.
It features advanced technologies including OFDMA, UL MU-MIMO and 1024-QAM modulation, leading to a greatly improved capacity of higher data rate and overall network throughput, particularly in high-density scenarios.
What is the differences of Wi-Fi 4, Wi-Fi 5, Wi-Fi 6?
Wi-Fi 4, Wi-Fi 5, Wi-Fi 6 are Wi-Fi generation names referring to the corresponding 802.11 amendments released at different times. Compared to older generations, each new generation offers improved Wi-Fi performance in terms of data rate and overall data throughput.
Wi-Fi 4: The underlying 802.11 amendment of Wi-Fi 4 is 802.11n. 802.11n devices can operate on 2.4 GHz or 5 GHz while the support for 5 GHz frequency band is optional.
The most vital improvement in 802.11n is the support for MIMO technology (Multiple-Input Multiple-Output).
MIMO increases wireless speed and throughput by using antennas to send or receive multiple spatial streams at one time.
Wi-Fi 5: The underlying 802.11 amendment of Wi-Fi 5 is 802.11ac, which only uses the 5 GHz band.
Compared to 802.11n, 802.11ac has wider channels, higher modulation, and improved MIMO technology—MU-MIMO (Multi-User-MIMO).
Wi-Fi 6: The underlying 802.11 amendment of Wi-Fi 6 is 802.11ax. 802.11ax builds on the successes of 802.11ac.
It provides higher potential speeds than 802.11ac through more efficient data modulation, like OFDMA and 1024-QAM. Furthermore, 802.11ax has added support for Uplink MU-MIMO (UL MU-MIMO).
2.4 GHz and 5 GHz
2.4 GHz and 5 GHz
20 Mhz, optional 40 Mhz
20 Mhz, 40 Mhz, 80 Mhz, optional 160 Mhz
20 Mhz, 40 Mhz, 80 Mhz, 160 Mhz
Maximum data rate
Advanced antenna technology
UL & DL MU-MIMO