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WiMAX Worldwide Interoperability for Microwave Access

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Title: WiMAX Worldwide Interoperability for Microwave Access


1
WiMAXWorldwide Interoperability for Microwave
Access
  • AMIT KUMAR
  • M TECH (ECE)
  • 09032302

2
The world of WIRELESS..
  • Have you ever wanted to lounge on a beach chair
    at a fancy resort and surf the Internet? Connect
    and get your email in a coffee shop ?
  • Put together some computers in your home so that
    they can share files or access to the Internet
    without drilling holes or snaking snarled wires
    from one computer to another?

3
What Is WiFi?
  • WiFi, short for wireless fidelity, is a wireless
    standard, or protocol, used for wireless
    communication.
  • WiFi devices are certified interoperable and run
    on some flavor of 802.11, a medium-range wireless
    networking standard.
  • 802.11 runs at speeds roughly comparable to
    those of wired networks.
  • No license is required to broadcast or
    communicate using 802.11 (or WiFi).
  • Free portions of the radio spectrum used by
    802.11 (and WiFi) are the 2.4GHz band, and, more
    recently, the 5GHz band.

4
But if this is WiFi then what is WiMAX!!!
5
What is WiMAX?
  • WiMAX is an acronym that stands for Worldwide
    Interoperability for Microwave Access, a
    certification mark for products that pass
    conformity and interoperability tests for the
    IEEE 802.16 standards.
  • It is similar to WiFi in concept, but has
    certain improvements that are aimed at improving
    performance and should permit usage over much
    greater distances.

6
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7
SPECTRUM
8
WiMAX Features
  • Long range , high data rate
  • Less susceptible to interference
  • Very viable mobile alternative to DSL and cable
  • Wireless broadband data delivery at home
  • Plug and play installation
  • Can connect IEEE 802.11(Wi-Fi) hotspots with each
    other and to other parts of the Internet

9
The Problems WiMAX Solves
  • Broadband wireless access to the masses
  • An inexpensive alternative to digital subscriber
    lines (DSL) and cable broadband access
  • Installation costs for a wireless infrastructure
    based on 802.16 is far less than today's wired
    solutions
  • WiMAX can also solve the problem of how to keep
    wireless notebooks and other mobile devices
    connected between 802.11 hotspots

10
WiMAX APPLICATIONS
  • Cellular backhaul
  • Broadband to rural and remote areas
  • Broadband on demand
  • Broadband residential
  • Best connected wireless services

11
RANGE OF SERVICES BY WiMAX
12
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13
HOW WIMAX WORKS ??
14
  • Infrastructure of WIMAX
  • A WIMAX tower similar in concept to a cell-phone
    tower. A single WIMAX tower can provide coverage
    to a very large area (8,000 km).
  • A WIMAX receiver The receiver and antenna could
    be a small box or PCMCIA card, or could be built
    into a laptop.

15
Introduction
A WIMAX tower
An example of WIMAX receiver PCMCIA card
16
WiMAX System Parts
  • WiMAX tower
  • Similar in concept to a cell-phone tower
  • Can provide coverage to a very large area -- as
    big as 3,000 square miles
  • A WiMAX receiver
  • The receiver and antenna could be a small box or
    PCMCIA card, or they could be built into a laptop
    the way WiFi access is today

17
Two forms of wireless service
  • Non-line-of-sight
  • A small antenna on your computer connects to the
    tower
  • 2 GHz to 11 GHz frequency range
  • Limited to a 4-to-6 mile radius

18
Two forms of wireless service
  • Line-of-sight service
  • A fixed dish antenna points straight at the WiMAX
    tower from a rooftop or pole.
  • 66 GHz frequency range
  • Higher frequencies, there is less interference
    and lots more bandwidth
  • 30-mile radius

19
Specifications
  • Range
  • 30-mile radius from base station
  • Speed
  • 70 megabits per second
  • Line-of-sight not needed between user and base
    station

20
  • In practical terms, WiMAX would operate similar
    to WiFi but at higher speeds, over greater
    distances and for a greater number of users.

21
Uses for WiMAX
  • Fixed last-mile broadband access as a replacement
    or substitute for wired DSL, cable, or T1
    connections
  • Hotspot subscriber and Backhaul provider
    connections supported
  • High-speed enterprise connectivity for business
  • WiMAX antennae may be even connected to an
    Internet backbone via either a light fiber optics
    cable or a directional microwave link.
  • Sony and Microsoft are closely considering the
    addition of WiMax as a feature in their next
    generation game console allowing gamers to create
    ad hoc networks with other players.

22
Wifi vs. Wimax
23
COMPARISION OF WiMax WITH OTHER TECHNOLOGIES
24
WiMAX as a Metro-Access Deployment Option
  • Fixed( IEEE 802.16)
  • For fixed devices not mobile in nature.
  • Its just a wireless form of
    DSL or T1.
  • Portable( IEEE 802.16e)
  • OFDMA
  • Carrier divided into multiple
    sub carriers
  • last-mile delivery improved by
    multi-path interference , delay spread ,
    robustness

25
Key WiMAX Players
  • Alcatel
  • Ericsson
  • Intel
  • Lucent,
  • Motorola
  • Samsung
  • Siemens
  • Dishnet
  • Many others

26
PROSPECTS FOR WiMax
Internet users
27
PROSPECTS FOR WiMax(cont..)
WiMAX Subscribers
28
FUTURE PROSPECTS
  • The WiMAX forum, backed by industry leaders (like
    Intel), helps the widespread adoption of
    broadband wireless access by establishing a brand
    for the technology.
  • When WiMAX chipsets are integrated into laptops
    and other portable devices, it will provide
    high-speed data services on the move, extending
    today's
  • It will enable end-users to enjoy an "Always Best
    Connected" experience.
  • And More

29
THANKS!!
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