Wi-Fi standards
Wi-Fi standards supported by the equipment. Nowadays, in addition to modern standards
Wi-Fi 4 (802.11n),
Wi-Fi 5 (802.11ac),
Wi-Fi 6 (802.11ax)(its variation
Wi-Fi 6E),
Wi-Fi 7 (802.11be) and
WiGig (802.11ad), you can meet also support for earlier versions —
Wi-Fi 3 (802.11g) and even Wi-Fi 1 (802.11b). Here is a more detailed description of each of these versions:
— Wi-Fi 3 (802.11g). An outdated standard, like Wi-Fi 1 (802.11b), which has sunk into oblivion. It was widely used before the advent of Wi-Fi 4, nowadays it is used mainly as an addition to newer versions — in particular, in order to ensure compatibility with outdated and low-cost equipment. Operates at a frequency of 2.4 GHz, the maximum data transfer rate is 54 Mbps.
— Wi-Fi 4 (802.11n). The first of the common standards that supports the frequency of 5 GHz; can operate in this range or in the classic 2.4 GHz. It is worth emphasizing that some models of Wi-Fi equipment for this standard use only 5 GHz, which is why they are incompatible with earlier versions of Wi-Fi. The maximum speed for Wi-Fi 4 is 600 Mbps; in modern wireless devices, this standard is very popular, only recently it began to be squeezed into this position by Wi-Fi 5.
— Wi-Fi 5
...(802.11ac). The successor to Wi-Fi 4, which finally moved to the 5 GHz band, which had a positive effect on the reliability of the connection and data transfer rate: it is up to 1.69 Gbps per antenna and up to 6.77 Gbps in general. In addition, this is the first version to fully implement Beamforming technology (for more details, see "Functions and Capabilities").
— Wi-Fi 6, Wi-Fi 6E (802.11ax). The development of Wi-Fi 5, which introduced both an increase in speed to 10 Gbps, and a number of important improvements in the format of work. One of the most important innovations is the use of an extensive frequency range — from 1 to 7 GHz; this, in particular, allows you to automatically select the least loaded frequency band, which has a positive effect on the speed and reliability of the connection. At the same time, Wi-Fi 6 devices are capable of operating at classic frequencies of 2.4 GHz and 5 GHz, and a modification of the Wi-Fi 6E standard is capable of operating at frequencies from 5.9 to 7 GHz, it is generally accepted that devices with Wi-Fi 6E support operate on frequency of 6 GHz, while there is full compatibility with earlier standards. In addition, some improvements were introduced in this version regarding the simultaneous operation of several devices on one channel, in particular, we are talking about OFDMA technology. Thanks to this, Wi-Fi 6 gives the smallest of modern standards a drop in speed when the air is loaded, and the modification of Wi-Fi 6E operating at a frequency of 6 GHz has the least amount of interference.
— Wi-Fi 7 (802.11be). This Wi-Fi standard began to be implemented in 2023. Thanks to the use of 4096-QAM modulation, a maximum theoretical data rate of up to 46 Gb / s can be squeezed out of it. Wi-Fi 7 supports three frequency bands: 2.4 GHz, 5 GHz and 6 GHz. The maximum bandwidth in the standard has been increased from 160 MHz to 320 MHz - the wider the channel, the more data it can transmit overnight. Among the interesting innovations in Wi-Fi 7, the development of MLO (Multi-Link Operation) is noted - with its help, connected devices exchange data using several channels and frequency bands simultaneously, which is especially important for VR and online games. The Multiple Resource Unit technology is designed to minimize communication delays when there are many connected client devices. The new 16x16 MIMO protocol is also aimed at increasing throughput with a large number of simultaneous connections, doubling the number of spatial streams compared to the previous Wi-Fi 6 standard.
WiGig (802.11ad). Wi-Fi standard using an operating frequency of 60 GHz; data transfer rates can be up to 10 Gbps (depending on the specific version of WiGig). The 60 GHz channel is much less loaded than the more popular 2.4 GHz and 5 GHz, which has a positive effect on the reliability of data transmission and reduces latency; the latter is especially important in games and some other special tasks. On the other hand, the increase in frequency has significantly reduced the connection range (for more details, see "Frequency range"), so that in fact this standard is only suitable for communication within the same room.
Note that in fact, the data transfer rate is usually much lower than the theoretical maximum — especially when several Wi-Fi devices operate on the same channel. Also note that different standards are backwards compatible with each other (with a speed limit according to the slower one) provided that the frequencies match: for example, 802.11ac can work with 802.11n, but not with 802.11g.Operating ranges
The number of wireless bands and channels supported by the router. Specified only for models that work with more than one range.
—
Dual-band (2.4 GHz and 5 GHz). Devices that simultaneously support two popular communication bands — 2.4 GHz and 5 GHz — in the "one communication channel per band" format. This ensures compatibility with most Wi-Fi standards (see above), and in some cases also has a positive effect on the quality of communication. For example, a Wi-Fi adapter (see "Device Type") with this feature may provide the ability to evaluate the load on both bands and automatically select the less loaded one.
—
Three-channel (2.4 GHz and 5 GHz in 2 channels). An improved version of the dual-band operation format: in the 5 GHz band, communication is carried out on two channels. This allows, for example, to “raise” three wireless connection channels on one router at once (three visible networks in the list of wireless networks) and achieve even higher throughput. The advantages of this format are especially noticeable when the router works simultaneously with several wireless devices.
—
Tri-band (2.4 GHz, 5 GHz, 60 GHz). The most "omnivorous" type of modern Wi-Fi equipment, compatible with all popular standards — from the outdated 802.11 b / g to the relatively new 802.11 ad. Also, the abundance of ranges contributes to an increase in spee
...d, especially when working with multi-range devices.Wireless speed 2.4 GHz
The maximum speed provided by the device when communicating wirelessly in the 2.4 GHz band.
This range is used in most modern Wi-Fi standards (see above) - as one of the available or even the only one. The theoretical maximum for it is 600 Mbit. In reality, Wi-Fi at a frequency of 2.4 GHz is used by a large number of client devices, from which congestion of data transmission channels emerges. Also, the number of antennas affects the speed performance of the equipment. It is possible to achieve the speed declared in the specification only in an ideal situation. In practice, it can be noticeably smaller (often by several times), especially with an abundance of wireless technology simultaneously connected to the equipment. The maximum speed at 2.4 GHz is specified in the characteristics of specific models to understand the real capabilities of Wi-Fi equipment. As for the numbers, according to the capabilities in the 2.4 GHz band, modern equipment is conditionally divided into models with speeds
up to 500 Mbit inclusive and
over 500 Mbit.
Wireless speed 5 GHz
The maximum speed supported by the device when communicating wirelessly in the 5 GHz band.
This range is used in Wi-Fi 4, Wi-Fi 6 and Wi-Fi 6E as one of the available bands, in Wi-Fi 5 as the only one (see "Wi-Fi Standards"). The maximum speed is specified in the specifications in order to indicate the real capabilities of specific equipment - they can be noticeably more modest than the general capabilities of the standard. Also, in fact, it all depends on the generation of Wi-Fi. For example, devices with Wi-Fi 5 support can theoretically deliver up to 6928 Mbit (using eight antennas), with Wi-Fi 6 support up to 9607 Mbit (using the same eight spatial streams). The maximum possible communication speed is achieved under certain conditions, and not every model of Wi-Fi equipment fully satisfies them. Specific figures are conditionally divided into several groups: the value
up to 500 Mbit is rather modest, many devices support speeds in the range of
500 - 1000 Mbit, indicators of
1 - 2 Gbps can be attributed to the average, and the most advanced models in class provide a data exchange rate of
over 2 Gbps.
Bandwidth
-
160 MHz. The presence of a bandwidth of 160 MHz increases the throughput for data transmission and allows it to approach the maximum theoretical speed.
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320 MHz. The bandwidth of 320 MHz was introduced in the Wi-Fi 7 standard (see the corresponding paragraph). It provides a significant increase in the speed of data exchange - twice as much compared to the width of the wireless channel of 160 MHz.
LAN
In this case, LAN means standard network connectors (known as RJ-45) designed for wired connection of LAN devices — PCs, servers, additional access points, etc. The number of ports corresponds to the number of devices that can be directly connected to wired equipment. way.
In terms of speed,
100 Mbps (Fast Ethernet) and
1 Gbps (Gigabit Ethernet) are the most popular options today. At the same time, thanks to the development of technology, more and more gigabit devices are being produced, although in fact this speed is critical only when transferring large amounts of information. At the same time, some models, in addition to the standard speed of the main LAN ports, may have
a 2.5 Gbps, 5 Gbps and even 10 Gbps LAN port with increased bandwidth.
USB 2.0
The number
of USB 2.0 ports provided in the design of the device.
USB in this case plays the role of a universal interface for connecting peripheral devices to the router. The specific USB devices supported and how they are used may vary. Examples include working with a flash drive that plays the role of a drive for working in FTP or file server mode (see "Functions / Capabilities"), connecting to a printer in
print server mode(see ibid), connecting a 3G modem (See "Data input (WAN-port)"), etc.
Specifically, USB 2.0 allows you to transfer data at speeds up to 480 Mbps. This is noticeably less than that of more advanced standards (starting with USB 3.2 gen1 described below), and the power supply of such connectors is low. However, even such characteristics are often quite enough, taking into account the specifics of the use of Wi-Fi devices. In addition, peripherals for newer versions can also be connected to the USB 2.0 port — the main thing is that the power supply is enough. Therefore, although this standard is considered obsolete, it is still widely used in modern wireless equipment. There are even models that provide
2 or even more USB 2.0 ports; this allows you to simultaneously use several external devices at once — for example, a 3G modem and a USB flash drive.
USB 3.2 gen1
The number
of USB 3.2 gen1 ports provided in the design of the device.
USB in this case plays the role of a universal interface for connecting peripheral devices to the router. The specific USB devices supported and how they are used may vary. Examples include working with a flash drive that plays the role of a drive for working in FTP or file server mode (see "Functions / Capabilities"), connecting to a printer in print server mode (see ibid), connecting a 3G modem (See "Data input (WAN-port)"), etc.
Specifically, the version of USB 3.2 gen1 (formerly known as USB 3.0 and USB 3.1 gen1) is the direct successor to USB 2.0, which, in particular, has increased by 10 times (up to 4.8 Gbps) the maximum data transfer rate and increased power supply. However despite the general popularity, this standard is still relatively rare in Wi-Fi devices — USB 2.0 is enough for many tasks. However, the situation is gradually changing; and among advanced hardware such as gaming routers, you can find solutions with
2 or more USB 3.2 gen1 ports.
Number of antennas
The total number of antennas (of all types — see below) provided in the design of the device.
In modern Wi-Fi equipment, this indicator can be different: in addition to the simplest devices with 1 antenna, there are models where this number is
2,
3,
4 and even
more. The point of using multiple antennas is twofold. Firstly, if there are several external devices per antenna, they have to share the bandwidth among themselves, and the actual communication speed for each subscriber drops accordingly. Secondly, such a design may also be required when communicating with one external device — to work with MU-MIMO technology (see below), which allows you to fully realize the capabilities of modern Wi-Fi standards.
Anyway, more antennas, usually, means a more advanced and functional device. On the other hand, this parameter significantly affects the cost; so specifically looking for equipment with numerous antennas makes sense mainly when the speed and stability of communication are critical.
Note that antennas intended for mobile communications may also be considered in this clause. So when choosing a model with support for mobile networks, it's ok to clarify this point.