20MHz corresponds to a bandwidth of 65M, with good penetration and long transmission distance (about 100m).
40MHz corresponds to 150M bandwidth, with poor penetration and short transmission distance (about 50m).
The 300M of the router refers to the transmission rate (maximum transmission rate) of your router: 300Mbps；; Also known as network speed.
Question 2: What does the band bandwidth mean in the router settings? The frequency band is just like the radio frequency of a radio station, and the wireless route also emits radio waves. Bandwidth refers to the ability of a line to transmit signals, just like a road. The wider it is, the greater the traffic flow can be.
Question 3: What does channel bandwidth mean? Hello, I'm glad to answer your questions.
Bandwidth refers to the transmission frequency width of the router:
20MHz corresponds to a bandwidth of 65M, with good penetration and long transmission distance (about 100m).
40MHz corresponds to 150M bandwidth, with poor penetration and short transmission distance (about 50m).
Understand? Megahertz and megahertz are different units of measurement! Just like you confuse wine with a hip flask! Although it is related, it is not comparable!
Question 4: What does band bandwidth mean? Bandwidth refers to the transmission frequency width of the router:
20MHz corresponds to a bandwidth of 65M, with good penetration and long transmission distance (about 100m).
40MHz corresponds to 150M bandwidth, with poor penetration and short transmission distance (about 50m).
And the 300M of your router refers to the transmission rate (maximum transmission rate) of your router: 300Mbps；; Also known as network speed.
Question 5: What does band bandwidth mean? The frequency band is just like the radio frequency of a radio station, and the wireless route also emits radio waves. Bandwidth refers to the ability of a line to transmit signals, just like a road. The wider it is, the greater the traffic flow can be.
Question 6: What does channel bandwidth mean? Bandwidth refers to the transmission frequency width of the router:
20MHz corresponds to a bandwidth of 65M, with good penetration and long transmission distance (about 100m).
40MHz corresponds to 150M bandwidth, with poor penetration and short transmission distance (about 50m).
Question 7: What does band bandwidth mean? Refers to the amount of data that can be transmitted in a fixed time, that is, the ability to transmit data in the transmission pipeline. It is usually expressed in transmission cycles per second or hertz (Hz).
Take the bandwidth of 20Mhz and 40Mhz as an example, which can be imagined as the width of the road. The wider the width, the more data can be run at the same time, which will improve the speed.
Of course, everyone enjoys the wireless network, and the frequency band with such a width (802. 1 1 b/g/n) is 2.4 12Ghz ~ 2.472Ghz, 1 * * 60 MHz. The available frequency band of domestic 802. 1 1a/n is 5.745 GHz to 5.825 GHz, which is also 60Mhz). If you take a wider road and run more data, you are more likely to crash with others. Once you crash, everyone will slow down, even slower than you walking on a narrow road.
Question 8: What is the difference between frequency band and bandwidth? Bandwidth refers to the transmission frequency width of the router:
20MHz corresponds to a bandwidth of 65M, with good penetration and long transmission distance (about 100m).
40MHz corresponds to 150M bandwidth, with poor penetration and short transmission distance (about 50m).
The 300M of the router refers to the transmission rate (maximum transmission rate) of your router: 300Mbps；; Also known as network speed.
Question 9: What is the bandwidth of the router band? Refer to the WIFI steps to try to reset it:
1. Turn on the power supply, then plug in the network cable, insert the incoming cable into the wan port (usually the blue port), and then insert the network cable connected to the computer into any lan port at will. After doing these things, you will see an address and account password behind the router. After the connection, enter the address you see on the router in the browser, usually192+068.40686.969999998995
2. Then enter and enter the corresponding account number and password. Generally, the new ones are admin.
3. Enter the operation interface after confirmation, and you will see a setup wizard on the left, which will pop up automatically.
4. Click Next to enter the Internet access mode settings. We can see that there are three ways to surf the Internet. If your family is dialing, please use PPPoE. Dynamic IP can be used by computers directly plugged into the network, and there is a DHCP server in the upper layer. Static IP is generally a dedicated line or something, and it may also be a cell bandwidth or something. There is no DHCP server in the upper layer, or you want to fix IP. I chose pppoe because I dialed.
5. If you choose PPPOE dial-up Internet access, you need to fill in the Internet account and password. Everyone should understand this. Open broadband and you will have an account. Just fill it out and it's OK! ! !
6. Then the next step is to enter the wireless settings. We can see the channel, mode, security options, SSID and so on. Generally, SSID is a name, which can be filled in at will. Then the mode is mostly 1 1bgn. We should choose wpa-psk/wpa2-psk as the wireless security option, which is safer and won't let others easily crack or surf the Internet.
~ I hope my answer is helpful to you. Please continue to "ask questions" if you have any questions!
It's not easy to answer questions and understand each other. Your adoption is my motivation. Thank you! !
Question 10: What is the use of the channel bandwidth in the wireless basic network settings? Is the bigger the better? 1. What is a wireless channel?
Wireless channel, also known as wireless "channel", is a data signal transmission channel with wireless signal as transmission medium.
As we all know, in wireless network installation, wireless management tools are generally used to set connection parameters. No matter what kind of wireless network, the most important setting items include network mode (centralized or point-to-point wireless network), SSID, channel and transmission rate, but some wireless device drivers or setting software simplify these steps. Generally speaking, using the default settings (that is, no settings) makes it easy to use wireless networks.
2. The number and influence of channels:
Generally, 1 ~ 13 channel is marked on the radio to prevent interference, but it is not an independent channel. There is a reuse technology problem here, so I don't need to explain it more. Here is a brief introduction to the correct knowledge:
Channel can be compared to RJ45 network cable, with 1 1 available channels. Considering that there is a signal overlapping area between two adjacent wireless access points, in order to ensure that the channels used in this area cannot cover each other, specifically, wireless access points with mutually covered signals must use different channels, otherwise, the signals between wireless access points will easily interfere with each other, leading to the decline of the overall performance of the wireless network.
However, each channel will interfere with the channels on both sides of it, and there are three effective channels after calculation. People with more wireless devices should pay attention to frequency band division.
However, many problems will also arise because of the pursuit of convenience. As we all know, the commonly used IEEE 802. 1 1b/g works in the frequency band of 2.4~2.4835GHz and is divided into 1 1 3 channels. When there are more than two APS in the wireless signal coverage range of wireless AP, it is necessary to set different frequency bands for each AP to avoid channel conflict. However, the default setting of wireless devices used by many users is that the channel is 1, so when more than two such wireless AP devices meet, the conflict is inevitable.
Why is the conflict of wireless channels so concerned now? In addition to the geometric growth of home or office wireless devices due to the continuous decline in prices, the natural lack of wireless standards is also an important reason for this dilemma:
As we all know, the current mainstream wireless is formulated by IEEE (American Institute of Electrical and Electronic Engineering). There are differences in the number of channels among the three wireless standards determined by IEEE: IEEE802. 1 1b, IEEE 802.1g and IEEE 802.11a.
3. Channel bandwidth
●IEEE802. 1 1b
Using 2.4GHz band, the modulation mode is CKK, and * * * has "3" non-overlapping transmission channels. The transmission rate can be automatically reduced from 1 1Mbps to 5.5Mbps, or adjusted to 2Mbps and 1Mbps according to the direct sequence spread spectrum technology to ensure the normal operation and stability of the equipment.
●IEEE802. 1 1a
The standard physical layer is extended and the frequency band of 5GHz is specified for this layer. The standard adopts OFDM modulation technology, * * has "12" non-overlapping transmission channel, and the transmission rate ranges from 6 Mbps to 54 Mbps. However, this standard is not compatible with IEEE802. 1 1b standard. Wireless AP and wireless network card supporting this are rare in the market.
●IEEE802. 1 1g
The standard has "3" non-overlapping transmission channels. Although it also runs at 2.4GHz, it is backward compatible with IEEE802. 1 1b, and because it adopts the same modulation method as IEEE802. 1 1a standard, it can make the wireless LAN reach the data transmission rate of OFDM 54Mbps.
It can be seen from the above that both IEEE802. 1 1b and IEEE 802. 1 g standards only support three non-overlapping transmission channels, only channels1,6, 1 1.
In the case of 802. 1 1b/g, the available channels will overlap and stagger in frequency, resulting in only three non-overlapping channels in the service area covered by the network. In this way, users in this service area can only enjoy the data bandwidth of these three channels. These three channels will also be interfered by other radio signal sources, because 802.438+0 1b/gw ... >; & gt