Wireless Network
A wireless network is a sophisticated communication system that employs radio waves and other wireless signals to connect various devices.
Wireless Router
A router is a device that forwards data packets between computer networks. In a home or small office setting, a wireless router combines the functions of:
- Routing
- Network Access Point
Mobile Hotspot
A mobile hotspot allows a smartphone (or other hotspot devices) to share its cellular data connection via Wi-Fi.
Cell Tower
A cell tower (or cell site) is a structure where antennas and electronic communications equipment are placed to create a cellular network cell. This cell in a cellular network refers to the specific area of coverage provided by a single cell tower, which is designed to seamlessly connect with adjacent cells created by other towers
Cell towers function through a combination of radio transmitters and receivers, which are equipped with antennas to communicate over specific radio frequencies. These towers are managed by Base Station Controllers (BSC), which oversee the operation of multiple towers. BSCs handle the transfer of calls and data sessions from one tower to another when users move across different cells. Finally, these towers are connected to the core network via backhaul links, which are typically fiber optic or microwave links.
Cell towers are differentiated by their coverage capacities and categorized primarily into macro cells and micro/small cells.
These radio waves are emitted at specific frequencies, known as oscillation rates, which are measured in hertz (Hz). Common frequency bands for wireless networks include:
1. 2.4 GHz (Gigahertz) – Used by older Wi-Fi standards (802.11b/g/n). Better at penetrating walls, but can be more prone to interference (e.g., microwaves, Bluetooth).
2. 5 GHz – Used by newer Wi-Fi standards (802.11a/n/ac/ax). Faster speeds, but shorter range.
3. Cellular Bands – For 4G (LTE) and 5G. These range from lower frequencies (700 MHz) to mid-range (2.6 GHz) and even higher frequencies for some 5G services (up to 28 GHz and beyond).