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What is a cellular Communication hotspot ?

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 A hotspot can be considered as a specific location where a user can get connected to a Wi-Fi network. For example, a public hotspot provides the public with service access points (SAP) that connects the user to a public data network. In the traditional set up the wired broadband connection feeds data to a router that sends it out as a Wi-Fi signal to all the Wi-Fi devices in the range. To use a cellular phone as a hotspot, the mobile phone treats its online connection to the cellular data network as a broadband source. The mobile phone then communicates locally like a Wi-Fi router using the 802.11ax protocol. Wi-Fi devices within the range can then communicate with the mobile phone, the way they would do with a wireless router. The mobile device can therefore connect the other devices to the other core data network through the cellular data network. It is a blend of software, hardware and back-end network data services that work together to transform the mobile device into the eq...
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Are the Base Transceiver Stations (BTS) safe?

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The BTS is the interface between the mobile phone and the rest of the network. Are the transmissions from the BTS safer to human beings around it? The BTS transmits a constant power of about 50 Watts. The strength reduces rapidly as the distance from the BTS increases. For example, at a distance of 4 meters from the BTS, a power of 50 watts from the BTS shall have reduced to 3.125 watts (Inverse square law) This makes the power transmitted from the BTS to be very little, just a few meters away and hence  quite harmless. The mobile phone sensitivity ( the smallest signal strength that can be detected by a phone is very small, around -120dBm ( or 0.001nW) and therefore the mobile phones can still communicate at quite some distance from the BTS. Compare this with a power of around 0.003 watts transmitted by the mobile phone (which most of the times is very close to our body) . Or the wireless router transmitting a power of around 0.1 watts and usually placed indoors in the office or h...
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