Wi-Fi & Bluetooth

NAME: TAHERA AL SABIBA

DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING

Outlines Wi-Fi IEEE 802.11 Family Wi-Fi Network Topology Wi-Fi Direct & it’s Features Bluetooth Technical Specification Bluetooth Version Wi-Fi vs. Bluetooth Comparison Between Similar Technologies

Wi-Fi

What is Wi-Fi 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)

IEEE 802.11 FamilyProtoco

lRelease Freq.

(GHz)Data Rate (Mbit/s)

(Typical / Max)

Range (m) (Indoor/outdoor)

A Sep 1999

5 / 3.7 20 / 54 35 / 120

B Sep 1999

2.4 5.5 / 11 35 / 140

G Jun 2003

2.4 22 / 54 38 / 140

N Oct 2009

2.4 / 5 110+ / 300+ 70 / 250

Wi-Fi Network Topology

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

Wi-Fi Direct & it’s 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

Bluetooth

Wireless Personal Area Networks (WPAN) Design goal

Cable replacement Low cost Low power Small size For mobile devices

Standard: IEEE 802.15.1

Technical Specification

Classes Class 1 (100mW, 100m range) Class 2 (2.5mW, 10m range) Class 3 (1mW, 1m range)

RF ISM band between 2.4-2.485GHz Frequency hopping over 79 channels, 1600 hops/second

Bluetooth Version

Version Data rate Feature1.2 721 kb/s

2.0 + EDR 3 Mb/s Enhanced Data Rate (EDR)

3.0 + HS 24 Mb/s High-Speed4.0 1 Mb/s (BLE) Bluetooth Low Energy

(BLE)

Wi-Fi vs. Bluetooth Bluetooth WifiSpecifications authority

Bluetooth SIG IEEE, WECA

Year of development

1994 1991

Bandwidth Low ( 800 Kbps ) High (11 Mbps )Hardware requirement

Bluetooth adaptor on all the devices connecting

with each other

Wireless adaptors on all the devices of the

network, a wireless router and/or wireless access

pointsCost Low HighPower Consumption

Low High

Frequency 2.4 GHz 2.4 GHzSecurity It is less secure It is more secureRange 10 meters 100 metersPrimary Devices Mobile phones, mouse,

keyboards,office and industrial automation devices

Notebook computers, desktop computers, servers

Ease of Use Fairly simple to use. Can be used to connect up to

seven devices at a time. It is easy to switch between

devices or find and connect to any device.

It is more complex and requires configuration of hardware and software.

Vs.

Comparison Between Similar Technologies

NFC RFID Bluetooth Wi-FiMaximum Operating

Range

10 cm 3 m 100 m 100 m

Operating Frequency

13.56 MHz Varies1 2.4 GHz 2.4/5 GHz (802.11n)

Directional Communicatio

n

Two way One way Two way Two way

Bit Rate 106/212/ 424 Kbps

Varies13 22 Mbps 144 Mbps

Potential Uses e-Tickets, Credit card payment,

Membership card

Tracking items, EZ-

Pass

Communicate between

phones, peripheral

devices

Wireless internet

Thank YouDo You Have any Question ?