WiMAX Worldwide Interoperability for Microwave Access

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WiMAXWorldwide Interoperability for Microwave
Access

• AMIT KUMAR
• M TECH (ECE)
• 09032302

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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?

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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.

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But if this is WiFi then what is WiMAX!!!
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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.

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SPECTRUM
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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

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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

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WiMAX APPLICATIONS

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

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RANGE OF SERVICES BY WiMAX
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HOW WIMAX WORKS ??
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• 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.

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Introduction
A WIMAX tower
An example of WIMAX receiver PCMCIA card
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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

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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

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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

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Specifications

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

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

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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.

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Wifi vs. Wimax
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COMPARISION OF WiMax WITH OTHER TECHNOLOGIES
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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

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Key WiMAX Players

• Alcatel
• Ericsson
• Intel
• Lucent,
• Motorola
• Samsung
• Siemens
• Dishnet
• Many others

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PROSPECTS FOR WiMax
Internet users
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PROSPECTS FOR WiMax(cont..)
WiMAX Subscribers
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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

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THANKS!!