wifi & bluetooth by tas
TRANSCRIPT
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 ?