How do Wireless PAN, LAN, ad-hoc, and cellular networks differ?

They differ primarily in range, data rate, and whether they require infrastructure.

* Range grows PAN → WLAN → cellular; ad-hoc/mesh is orthogonal (no infrastructure). *

Wireless PAN (Personal Area Network):

• Range: within a person's reach, typically under 10 meters.
• Example: Bluetooth connecting your phone to headphones or a smartwatch.
• Low power, low data rate, designed for personal device ecosystems.
• Standard: IEEE 802.15.

Wireless LAN (Local Area Network):

• Range: 10-200 meters (indoor to outdoor).
• Connects two or more devices over short distances wirelessly.
• Example: Wi-Fi in your home, office, or coffee shop.
• Standard: IEEE 802.11 (a/b/g/n/ac/ax).

Wireless Ad-hoc Network (Mesh):

• No fixed infrastructure. Radio nodes self-organize into a mesh topology.
• Each node can relay traffic for others.
• Range depends on how many nodes can relay.
• Used in military, emergency response, and IoT sensor networks.

Cellular / Mobile Network (Mobilfunk):

• A radio network distributed over large areas using cells, each served by at least one fixed transceiver (base station).
• Range: 200m to 20+ km per cell.
• The cells tessellate to provide seamless coverage over entire countries.
• Standards: GSM, UMTS, LTE, 5G NR.

Tip: Think of it as a range spectrum. PAN covers your body, LAN covers your building, cellular covers your country.

Go deeper:

• Cellular network (Wikipedia) — the longest-range family: how tessellating cells with frequency reuse scale coverage to a whole country.