WiFi, short for “Wireless Fidelity,” is a technology that allows devices to connect to the internet or communicate with each other wirelessly using radio waves. It’s widely used in homes, businesses, and public spaces to provide internet access without the need for physical wired connections. WiFi operates within the unlicensed radio frequency bands, typically 2.4 GHz and 5 GHz, and it’s governed by the IEEE 802.11 family of standards. These standards define different WiFi versions, such as 802.11n, 802.11ac, and the latest, 802.11ax (Wi-Fi 6), each offering various speeds, range, and features. WiFi routers and access points transmit signals that devices like smartphones, laptops, tablets, and smart home gadgets can receive, enabling them to access the internet or network resources.
Contents
HT20 Mode
- HT20 Channel bandwidth mode is 20MHz
HT40
- HT40 Channel bandwidth mode is 40Mhz
- HT40 is combine of Two 20Mhz channel.
- One Channel function is main channel, another one is auxiliary channel.
- The main channel send the beacon packets and data packets, another auxiliary channel sends the other packets
- Sometimes non-overlapping will happen if your using HT40 channel used as 2.4Ghz. So advised to not use HT40 channel in 2.4Ghz.
Differences Between HT20 and HT40
- HT20 Channel bandwidth mode is 20Mhz and HT20 is working 40Mhz.
- Reference : http://support.huawei.com/enterprise/en/knowledge/EKB1000079063
Acrylic WiFi Tool
FAQ
- How to view all other WiFi Status like Signal Strength, Security and so on?
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Features
- Wireless Connectivity: This enables wireless connectivity between devices, allowing them to communicate and share data without physical cables.
- High Speeds: Modern WiFi standards support high data transfer rates, ranging from several Mbps to multiple Gbps, depending on the specific standard and configuration.
- Range: WiFi networks can cover varying distances, from small areas like homes or offices to larger spaces like campuses or outdoor hotspots. Factors like the transmit power of the router/access point, environmental conditions, and obstacles influence the range.