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WiFi, Bluetooth, ZigBee and NFC



Wireless Technology Trends

WiFi
More hotspots, higher speed
(802.11 a/b/g -> 802.11 n)
WiMAX
Bill Payne (CTO, Motorolla), said WiMAX will finally evolve into LTE.
LTE
Good coverage and high throughput (with offloading)

WiFi

What is WiFi
Short for “Wireless Fidelity”
A trademark of the Wi-Fi Alliance
The brand name for products using the IEEE 802.11 family of standards
Commonly used for “wireless local area network” (WLAN)

WiFi Network Topology

Point-to-Multipoint (Access Point)
Point-to-Point (Ad hoc)
Multipoint-to-Multipoint (Mesh Network)

WiFi Direct Features

Connects devices directly, with or without a Wi-Fi network or hotspot available
Makes the connection to open a world of applications, including content sharing, synch, printing, gaming and more
Connects with almost any Wi-Fi CERTIFIED device
Designed for portable and stationary devices

ZigBee

Design goal
Low power consumption
Simple Design
Few costs
History
ZigBee-style networks began in around 1998
IEEE 802.15.4 was first completed in 2003
ZigBee Alliance was established in 2002