Which factors are related to wireless AP capacity
What is the capacity of a wireless AP? We have to know the performance index of AP when we know its carrying capacity.
When doing wireless coverage projects, it is necessary to select wireless AP according to the networking requirements and application scenarios, and the capacity of wireless AP is an important reference factor. However, in general, a single AP may not be able to achieve the capacity claimed by businesses, because there are many factors affecting the capacity of wireless AP, such as the size of broadband, the number of access devices, chips, memory, etc., which will become factors affecting the capacity of AP, all of which should start from the working principle of wireless AP.
What are the considerations for AP selection?
When selecting AP for wireless coverage, the following should be considered:
Environmental characteristics: outdoor or indoor, terminal sparse distribution (such as warehouse) or high-density wireless access (such as conference room, multi-functional hall, etc.).
Installation method: ceiling, panel or 86 box type.
Power supply mode: Standard POE (802.3af or 802.3at), passive Poe or DC (DC power supply).
Coverage: single room, multiple rooms, area coverage, fixed-point coverage, etc.
Frequency: 2.4G and 5. G, single frequency and dual frequency.
Capacity: 10, 20, 30 or 50 terminals are connected to a single AP.
The carrying capacity of wireless AP in the market is different from that claimed by different manufacturers, ranging from 25, 50, 100, 200. Is it really that high?
What is the capacity of a wireless AP? We have to know the performance index of AP when we know its capacity.
When doing wireless coverage projects, it is necessary to select wireless AP according to the networking requirements and application scenarios, and the capacity of wireless AP is an important reference factor. However, in general, a single AP may not be able to achieve the capacity claimed by businesses, because there are many factors affecting the capacity of wireless AP, such as the size of broadband, the number of access devices, chips, memory, etc., which will become factors affecting the capacity of AP, all of which should start from the working principle of wireless AP.
What are the considerations for AP selection?
When selecting AP for wireless coverage, the following should be considered:
Environmental characteristics: outdoor or indoor, terminal sparse distribution (such as warehouse) or high-density wireless access (such as conference room, multi-functional hall, etc.).
Installation method: ceiling, panel or 86 box type.
Power supply mode: Standard POE (802.3af or 802.3at), passive Poe or DC (DC power supply).
Coverage: single room, multiple rooms, area coverage, fixed-point coverage, etc.
Frequency: 2.4G and 5. G, single frequency and dual frequency.
Capacity: 10, 20, 30 or 50 terminals are connected to a single AP.
The carrying capacity of wireless AP in the market is different from that claimed by different manufacturers, ranging from 25, 50, 100, 200. Is it really that high?
In fact, there is no standard answer for how many end users a wireless AP can connect to, because the network application situation of each use scenario is ever-changing, and the terminal devices used are also different, so it is difficult to use a standard test method, so many manufacturers use a typical application environment to estimate the carrying capacity.
Therefore, in order to ensure that the communication speed of the whole wireless network is not affected, a single AP needs to control the number of wireless terminal access, which is often referred to as the amount of band capacity, so as to ensure that each terminal can obtain sufficient network bandwidth.
As for the impact of wireless AP hardware configuration on its capacity, it mainly refers to chip and memory size. The better the chip is, the greater the throughput is; memory is also a factor affecting the amount of tape.
1. Dual frequency and single frequency:
At present, the dual band AP in the market supports 2.4G and 5g APS. In our general practical experience, it is difficult to exceed 40 single frequency APS. The capacity of dual band AP is much higher than that of 5.8G dual band AP, and its performance may be twice of that of single band AP. Therefore, if it is a high-density access site, it is strongly recommended to use dual band AP.
2. Difference between frequency range 2.4G and 5g (why dual frequency is used):
2.4G frequency is widely used, which is supported by almost all computers and smartphones. But because it is so common, even the microwave oven is using the 2.4G frequency band, so the interference is large, serious interference will cause the data transmission rate to slow down.
5g Wi Fi avoids the problem of mutual interference, because it is seldom used at present. Generally based on 802.11ac technology supporting 5g wireless AP, it can carry higher transmission rate. 5g also has disadvantages. The problem is that the ability of passing through the wall is poor. The signal attenuation of 5g signal after a load-bearing wall is very obvious.
So:
The lower the frequency, the better through the wall. The higher the frequency, the faster the speed. At present, there are many people using 2.4G, coupled with the WiFi signal of CMCC, the interference is serious! 5g is not widely used at present, and there is basically no interference, so dual frequency AP can be applied at both frequencies.
What is 802.11 a / B / g / N / AC?
Firstly, 802.11 is a WLAN standard. 802.11 a / B / g / N / AC is developed from 802.11. Different suffixes represent different physical layer standard working frequency band and different transmission speed, that is to say, their physical layer and transmission speed are different.
802.11b and 802.11g work in the same frequency band. G can be compatible with B, that is to say, all the network cards supporting G can support B.
802.11n protocol is dual frequency operation mode (including 2.4GHz and 5GHz). In this way, 11n guarantees the compatibility with the previous 802.11a B, G standards, that is, we need to see whether there are 802.11n parameters when we select AP.
The new generation of WiFi standard 802.11ac is developed from 802.11n, which has a higher speed than 802.11n. Now it's on the market
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