What's the difference between 2.4 g and 5g? 2.4g and 5g mainly refer to signals of two different frequency bands, mainly in terms of transmission range and network speed. The former band has a relatively short frequency band, can be received at a long distance, and has a strong ability to penetrate walls, but the signal is easily interfered. The latter has a higher wireless transmission rate and stronger anti-interference, but also has the disadvantages of long frequency band, short transmission distance and poor penetration.
1. What's the difference between 2.4 g and 5g wifi
1.1 The main difference between 1.1 2.4g and 5g is range and bandwidth
1.1.1 Advantages of 2.4 GHz: Greater coverage, better at penetrating solid objects. Cons: Lower data rate, more susceptible to interference.
1.1.2 Advantages of 5 GHz: Higher data rates, less susceptible to interference. Cons: Small coverage area, not good at penetrating solids.
1.2 2.4 GHz vs 5 GHz: Which frequency should I choose?
2.4 GHz connections travel longer distances at lower speeds, while 5 GHz frequencies provide faster speeds at shorter ranges. The choice between 2.4 GHz or 5 GHz depends on where and how you use your WiFi connection the most.
Many electronic devices and appliances use the 2.4 GHz frequency, including microwave ovens, baby monitors, and garage door openers. If you have a lot of these devices in your home, or if you live in a crowded area, the 2.4 GHz band can get congested, which can hurt speed and signal quality.
1.3 Use 5 GHz for devices closer to the router
If you can use most devices near your router, 5 GHz is your best option for higher speeds. Likewise, if you're doing a lot of high-bandwidth activity online, such as gaming or videoconferencing, it's best to use this frequency and be as close to your router as possible. Or, as mentioned above, if you are in a cell with many other unit buildings around, 5 GHz will help you avoid wireless congestion.
1.4 Use 2.4 GHz for devices farther from the router
On the other hand, on devices that move around a lot throughout the day, especially if you have a large house, the 2.4 GHz frequency is your best bet. Compared to the 5 GHz band, this wavelength has a wider range and penetrates solid objects more easily, making it ideal for devices that are carried from one room to another or farther from the router. The exception is newer routers running 5 GHz 802.11ac WiFi, which, under the right conditions, can get coverage equal to 2.4 GHz.
1.5 How do I change the frequency settings?
Whether you choose 2.4 GHz or 5 GHz, you need to make sure the wireless is enabled on your modem/router and set to use the same frequency.
With a dual-band router, you can set it to transmit on both frequencies at the same time. In this case, you usually have two networks (SSIDs) in your network list with the same name but with "5G" or "2.4G" at the end. You can then choose to connect each individual device to either network.
On most newer modems, you can also find the best WiFi channel for your environment, then change the channel in the modem's wireless settings as needed. In this way, you can take advantage of the different capabilities of 2.4 GHz and 5GHz WiFi.
2. What is the difference between router 2.4g and 5g
2.1 The two mainly refer to the difference in the frequency band of the WiFi signal. Most WiFi devices such as routers generally use the signal of the 2.4g frequency band when they are not marked. Now many routers use the 2.4G+5G dual frequency band. design;
2.2 The difference in transmission range, the 2.4g frequency band is relatively short, it can be received at a long distance, and the ability to penetrate walls is strong, but the signal is easily interfered. Now many digital products use the 2.4G frequency band wireless signal , when there are too many surrounding signals, the channel will be congested and easily interfered; 5G has stronger anti-interference, but it also has the shortcomings of long frequency band, short transmission distance and poor penetration;
2.3 Differences in transmission speed, compared with 2.4G single-band wireless routers, 5G has a higher wireless transmission rate and stronger anti-interference. In addition, the use of 2.4G wireless signals mentioned above is prone to congestion of channels, resulting in slower speeds. The channel of the 5G frequency band is wide enough, so when there are many WiFi signals around, the 5G signal can guarantee the speed of the Internet because the channel will not be congested.
3. The difference between 5g network and 2.4g network
3.1 5G network and 2.4G network
3.1.1 2.4GHz network:
2.4GHz wireless technology is a short-range wireless transmission technology for open source use. 2.4GHz refers to a working frequency band, and Bluetooth technology works in this frequency band. Working in the 2.4GHz frequency band can obtain a larger range of use and stronger anti-interference ability.
3.1.2 5GHz network:
Most of the Wi-Fi we have been using in the past supports the IEEE 802.11n wireless standard and works in the 2.4GHz frequency band, so it is called 2.4gWi-Fi, but strictly speaking, it does not necessarily work in the 5GHz frequency band. It is 5G Wi-Fi, because the three standards of IEEE 802.11a (first generation), IEEE 802.11n (fourth generation) and IEEE 802.11ac (fifth generation) can work in the 5GHz frequency band.
The 2.4GHz network is much larger than the 5G network in terms of use and penetration, but it is far less than the 5G network in terms of network experience and actual transmission rate. As for the 5G network, the data transmission channel is much larger than the 2.4G network, so the network transmission rate The experience is obviously better than the 2.4G network segment, but it is difficult to penetrate the wall if there is a short board. Basically, the signal is very weak after two walls.
3.2 The difference between 5g network and 2.4g network signal:
2.4GWiFi is the wireless frequency of 2.4Ghz~2.5GHz. The standard bandwidth is 20MHz, and the extended bandwidth is 40MHz.
5G WiFi is the wireless frequency of 4.9GHz~5.9GHz. The bandwidth can be increased to 40MHz or even 80MHz or higher, and the maximum transmission speed can be increased to 1Gbps, which can transmit about 125MB of content per second.
The lower the frequency, the better the penetration through the wall. The higher the frequency, the faster the speed. Since there are more people using 2.4G at present, it is in the same frequency band as home appliances and other wireless devices. Therefore, the interference is more serious. There are relatively few users using 5G, and the propagation attenuation in the air is larger. The coverage distance will be smaller than that of 2.4G, and the interference will be less.
Advantages and disadvantages of signals:
Let's talk about the advantages and disadvantages of 2.4GHz and 5GHz signals. The advantages and disadvantages of 2.4GHz and 5GHz Wi-Fi are shown in the following figure:
The question of which frequency band to use is more suitable: Through the above comparison, we can see the advantages and disadvantages of the two frequency bands, 2.4G and 5G, but not only one of the two can be selected. Most of the use environments are complex, the terminals are diverse, and the access volume is large, so The two frequency bands are used together to maximize wireless advantages. If you are a home user, it is recommended to choose a dual-band router. Objects with less movement such as Internet TV and notebooks can choose the most suitable frequency band in 2.4G or 5G; mobile terminals can use different frequency bands in different locations, so as to give full play to the advantages of each frequency band .
3.3 Why is the wall penetration effect of 5G signal worse than that of 2.4G signal
When the distance from the router is the same, the 5G signal is weaker than the 2.4G signal, which is determined by the physical characteristics of electromagnetic waves: the longer the wavelength, the less attenuation, and it is easier to bypass obstacles and continue to propagate. The 5G signal has a high frequency and a short wavelength, while the 2.4G signal has a low frequency and a long wavelength, so the 5G signal attenuates more when it passes through obstacles, and its ability to penetrate walls is weaker than that of the 2.4G signal. This is the case with all dual-band wireless routers. The following is the loss formula of 2.4G and 5G propagation in free space (where F is the frequency, the unit is MHz; D is the distance, the unit is km)
The attenuation formula of wireless electromagnetic wave in free space: L=32.5+20lgF+20lgD.
2.4G frequency band attenuation formula: L1=100+20lgD;
The attenuation formula of the 5G frequency band: L2=108+20lgD.
If the 5G signal is weaker than the 2.4G signal, the network speed will not necessarily be slower than the 2.4G signal. The network speed is not only related to the signal strength, but also has a great relationship with the channel quality. After passing through a wall, the 2.4G frequency band may have 3 bars of signal, and the 5G band may only have 2 bars of signal. If the surrounding wireless interference is too large, watching videos in the 2.4G band with 3 bars of signal often buffers a bit, while using 2 bars Watching videos in the 5G band of the signal is smoother. For some applications with higher requirements on network speed and delay, such as downloading, voice, real-time games, etc., it is more suitable to use 5G signals.
