2.2 Wireless networking Technologies

Near Field Communication (NFC)

Short-range wireless technology that allows devices to exchange data by tapping or bringing them close to each other

Radio Frequency Identification (RFID)

• Wireless tech that used electromagnetic fields to track and identify tags attached to objects

• Functions like a wireless barcode that can be scanned w/o a direct line of sight

Bluetooth

Low power wireless technology that uses short-range radio that provides a way to connect nearby devices to each other

2.4 GHz

• Longest range

• Slowest

• Very common & used in non-network devices

• Causes interference

5 GHz

• Faster than 2.4 GHz & not as common

• Less interference

• Shorter range than 2.4 GHz

6 GHz

• Newest band

• Fastest & Shortest Range

• Lowest Interference

• Few devices use it

IEEE 802.3

Ethernet Standard

IEEE 802.11

Wi-Fi Standard

IEEE 802.11

• Wi-Fi 0

• 1 -2 Mbps

• 2.4 GHz

• 1997

IEEE 802.11b

• Wi-Fi 1

• 11 Mbps

• 2.4 GHz

• 1999

IEEE 802.11a

• Wi-Fi 2

• 6 - 54 Mbps

• 5 GHz

• 1999

IEEE 802.11g

• Wi-Fi 3

• 54 Mbps

• 2.4 GHz

• 2003

IEEE 802.11n

• Wi-Fi 4

• 600 Mbps

• 2.4, 5 GHz

• 2009

IEEE 802.11ac

• Wi-Fi 5

• 3.5 Gbps

• 5 GHz

• 2013

IEEE 802.11ax

• Wi-Fi 6/6e

• 9.6 Gbps

• 2.4,5,6 GHz

• 2019

IEEE 802.11be

• Wi-Fi 7

• 46 Gbps

• 2.4,5,6 GHz

• 2024

Wi-Fi

Wireless technology that uses radio waves that allows networking devices to communicate with each other

IEEE

Institute of Electrical and Electronic Engineers

• responsible for the “802 Project”