What does unlimited bandwidth and wireless channels mean in the device settings?

1. What is a wireless channel?

The wireless channel is often referred to as the "frequency band" of wireless, which uses the wireless signal as the data signal transmission channel for transmission.

As you know, in the installation of wireless networks, the general use of wireless management tools, set connection parameters, no matter which kind of wireless network the most important setting items include network mode (centralized or peer-to-peer wireless network), SSID, channel, transmission rate four items, but some wireless equipment driver or setting software simplifies these steps, generally using the default settings (that is, no settings are required) can easily use the wireless network.

2. The number and impact of channels

Wireless is generally marked with 1 13 channels to choose from to prevent interference, but it is not a separate 13 channels. There's a reuse problem here, so I won't explain much. A brief introduction to the correct knowledge is as follows:

The channel can be compared to the RJ45 network cable, with a total of 11 available channels. In order to ensure that the signal channels used in these areas cannot cover each other, the wireless APs that cover each other must use different channels, otherwise the signals between the wireless APs can easily interfere with each other, resulting in the overall performance of the wireless network being degraded.

However, each channel will interfere with the channels on both sides of it, and there are three effective channels in the calculation.

It refers to the amount of data that can be transmitted at a fixed time, that is, the ability to transmit data in a transmission pipeline. It is usually expressed in cycles per second or hertz (Hz).

For example, if you use the bandwidth of 20MHz and 40MHz as an example, you can think of the width of the road, and the wider the width, the more data you can run at the same time, and the speed will increase.

Summary. Dear, hello, the wireless channel in the wireless network is a visual metaphor for the path between the transmitter and the receiver in wireless communication, for radio waves, it is transmitted from the transmitter to the receiver, there is no tangible connection between it, and its propagation path may be more than one, we can imagine that there is an invisible road connection between the two in order to vividly describe the work between the transmitter and the receiver, and this connection path is called the channel, and the wireless channel is often said to be wireless. Frequency Bands (Channels)".

Hello, the wireless channel in the wireless network is a visual metaphor for the path between the transmitter and the receiver in wireless communication, for radio waves, it is transmitted from the transmitter to the receiver, there is no tangible connection between it, and its propagation path may be more than one, we in order to vividly describe the work between the transmitter and the receiver, we can imagine that there is an invisible sail beam road connection between the two, this connection channel is called the channel, and the wireless channel is often said to be wireless. Frequency Bands (Channels)".

The wireless channel refers to the frequency band, which is a signal transmission channel with the wireless signal number as the transmission carrier. According to the regulations, there are 13 channels used in China, and 1-13 channels are used. The more devices on the same channel, the weaker the strength of the wifi signal, if you want to make the quality of the wifi at home high enough, you must change the wifi in your home and the wifi in Zhouzaobuwei to use the same channel.

Channel, in layman's terms, refers to a signal path based on the transmission medium.

Specifically, a channel refers to a signal path provided by a cable or radio line. The role of a channel is to transmit a signal, providing a band through which the signal can pass through it, while at the same time restricting and impairing the signal.

In general, we refer to a channel that refers only to the medium of signal transmission as a narrow channel. At present, the transmission media used include overhead open wire, cable, optical fiber (optical cable), medium and long wave surface wave propagation, ultrashort wave and microwave line-of-sight propagation (including satellite relay), short-wave ionospheric reflection, ultra-short-wave meteor residual scattering, tropospheric scattering, ionospheric scattering, ultrashort-wave over-the-horizon diffraction, waveguide propagation, optical wave line-of-sight propagation, etc.

It can be seen that a narrow channel refers to the transmission medium (listed above) that is connected between the sending and receiving devices. The definition of a narrow channel is intuitive and easy to understand.

In the analysis of communication principles, from the point of view of studying message transmission, we are only concerned with the basic problems in the communication system, so the range of channels can be expanded.

Channel, which refers to the channel of communication, is the medium of signal transmission.

The wireless channel is often referred to as the wireless "frequency band" (channel), which is a data signal transmission channel that uses the wireless cable signal as the transmission channel.

In the installation of wireless network, generally use the management tools that come with the wireless network equipment, set the connection parameters, no matter what kind of wireless network the most important setting items include network mode (centralized or peer-to-peer wireless network), SSID, channel, transmission rate four, but some wireless equipment driver or setting software simplifies these steps, generally using the default settings (that is, no settings are required) can easily use the wireless network.

But many problems will also arise due to the pursuit of convenience, and the commonly used operating frequency bands, which are divided into 11 or 13 channels. If there are more than two APs in the wireless signal coverage area of a wireless AP, you need to set different frequency bands for each AP to avoid conflicts between shared channels. The default setting of the wireless devices used by many users is channel 1, and conflicts are inevitable when two or more such wireless AP devices "meet".

The inherent lack of wireless standards has caused the conflict of wireless channels to cause concern: as we all know, the current mainstream wireless protocols are formulated by the IEEE (American Institute of Electrical and Electrical Engineers), and the number of channels is different among the three wireless standards identified by the IEEE.

The channel is the transmission medium of the signal. Wireless channels include ground wave propagation, short-wave ionospheric reflection, ultra-short-wave or microwave line-of-sight relay, artificial satellite relay, and various scattering channels. The more data per second, the better.

Channel: The medium through which the signal is transmitted.

Wireless network signals propagate in the air in the form of electromagnetic waves, and their frequency is that these frequency bands are divided into 11 or 13 channels (the network standard, ordinary routing is this standard). In the DLINK wireless router, there are 13 channels to choose from. Normally, the default channel is "6" or "automatic", which can be used normally in a single wireless network environment, but if it is in the coverage range of multiple wireless networks, the wireless router uses the default channel "6", which will definitely cause conflicts and affect the performance of the wireless network.

Steps. 1.Enter the router that you have, enter the username and password (the default is admin), enter the router settings, and find the channel (channel) of the wireless setting

3.Turn on the wifi on your phone and connect to the wifi on your router, which is a prerequisite for using this app. Then open the app. The signal strength and channel distribution of the surrounding wifi are clear at a glance.

5.Depending on the recommended channel, you should choose the most marginal 13 or 14, but if the router does not have one, you can only choose the most marginal 11 as above. Similarly, if it is recommended to choose the most marginal channel1, with the least interference.

I didn't see the more inward the interval, the more overlapping interference there was, so the farthest side of the area was the least disturbed.

The channel bandwidth is the lower and upper frequency of the signal that is allowed to pass through the channel, which can be understood as a frequency passband. For example, if the allowable passband of a channel is up to 15kHz, then its bandwidth is