Wi-Fi allows wireless networking connectivity within homes and offices without wires, using radio signals to connect devices within 100 feet of each other. WiMAX provides broader wireless coverage over distances of up to 50km to serve as a wireless alternative to wired broadband. While Wi-Fi is best for small indoor coverage areas, WiMAX is designed for larger outdoor metropolitan coverage as a wireless option for last mile internet access to homes and businesses. Both technologies will continue to evolve and work together, with WiMAX complementing Wi-Fi for broader range wireless connectivity and Intel integrating their capabilities into single chips.

1. WI-FI / WI-MAX
ANKIT GUPTA
MCA 3rd year
1003714008

2. WI-FI / WIMAX
 WI-FI access is hot spots that are very small, so
coverage is sparse.
 WI-Max access is a high speed of Broadband and is
wireless instead of wired.

3. WI-FI
 Wi-Fi is the wireless way to handle networking.
 It is also known as 802.11 networking.
 The big advantage of Wi-Fi is its simplicity.
 You can connect computers anywhere in your home
or office without the need for wires. The computers
connect to the network using radio signals, and
computers can be up to 100 feet or so apart.

4. WIRELESS NETWORKING STANDARDS
 Wi-Fi refers to the protocols that allow wireless
networking.
 These protocols are codified in standards.
 Standards are mutually agreed upon rules adopted
by the industry on how the wireless networks
operate.

5. WI-FI TYPE
 Wireless Personal Area Networks
- Up to 10 meter
- IEEE 802.15.1 (Bluetooth)
 Wireless Local Area Networks
- Up to 100 meter
- IEEE 802.11 (Wi-Fi)

6. GOVERNING STANDARDS BODY
 Formed in 1999
 Founding Companies:
 3Com
 Aironet
 Harris Semi Conductor
 Lucent
 Symbol Technologies
 Nokia

7. SPECIFICATIONS
 802.11a
 802.11b
 802.11g
 802.11n

8. WLAN ARCHITECTURE—AD HOC MODE
 Ad-Hoc mode: Peer-to-peer setup where
clients can connect to each other directly.
Generally not used for business networks.

9. APPLICATION OF WI-FI
 Many electronic devices use Wi-
Fi due to its simple functions.
 Companies use Wi-Fi to create
wireless networks within their
company.
 Phone companies such as use
Wi-Fi Hot Spots for their users to
get free calling/internet access.
 Gaming companies like Nintendo
use Wi-Fi to synch their products
and to use global network usage.

10. WI-FI SECURITY
 64-bit encryption
- original
 128-bit encryption
- much secure

11. FUTURE OF WIRELESS TECHNOLOGY
 The future is WI-Max
 Can reach over 50km in range and have a
maximum throughput of 70 Mbps.

12. WIMAX
 Worldwide Interoperability for Microwave Access
 Brand licensed by the WiMax Forum.
 “a standards-based technology enabling the
delivery of last mile wireless broadband access as
an alternative to cable and DSL”
 WiMAX was seen as more of a Metropolitan Area
Network (MAN) technology providing a much larger
coverage.
 Based on IEEE 802.16

13. WIMAX
 Goal: Provide high-speed Internet access to home
and business subscribers, without wires.
 Base stations (BS) and subscriber stations (SS)
 Centralized access control to prevents collisions
 Supports applications with different QoS
requirements
 WiMAX is a subset of IEEE 802.16 standard

14. WI MAX
WiMAX, in fact, comes in two forms, one is called
‘fixed WiMAX’ and another is ‘mobile WiMAX’.
WiMAX in its fixed form is seen as a possible
alternative to expensive cable and fibre deployment.
It is faster to deploy and less expensive and it also
offers operators more flexibility in terms of
deployment time frame and possible installation
areas.
3G or other cellular network operators could see this
as a potential substitute or as a complement to their
cellular product.

15. WI MAX KEY FEATURE
 Modulation technique
 Operating frequencies
 Problems in wireless transmission

16. WIFI VS. WIMAX
IEEE 802.11
(Wi-Fi)
IEEE 802.16a
(WI Max)
Max Speed 54Mbps (a&g) 10-100Mbps
Range 100m 40 km
QoS none yes
Coverage Indoor Outdoor
Users Hundred Thousand
Service Level None Yes

17. CONTINUED..

18. WILL WIMAX DISPLACE WIFI?
 WiMAX will not replace WiFi
completely, but work TOGETHER
 Intel is currently integrating WiMAX
and WiFi into a single Centrino
chip.
 WiFi’s primary role will always be
autonomous hotspot service
 areas (indoor and outdoor 0 ft. <
cell radii <500 ft.).
 WiMax will ultimately replace WiFi
in large-scale (greater than 1mi.Sq.)
commercial and public roles.

19. WI-FI AND WIMAX TOGETHER

20.  THANK YOU