Wimax Technology

WIMAX TECHNOLOGY

SHAFAQUE GHAYAS SATTAR3rd YEARECE 11030

Outline of the Presentation• Introduction• IEEE 802.16 standard• Fundamental WiMAX Concepts• Mode of Communication• Development & Evolution• Benefits Of WIMAX• Features of WIMAX• Advantages of WIMAX over WIFI• WIMAX vs. 3G• Conclusion• References

WIMAX stands for Worldwide Interoperability for Microwave Access

WiMAX refers to broadband wireless networks that are based on the IEEE 802.16 standard, which ensures compatibility and interoperability between broadband wireless access equipment

WiMAX, which will have a range of up to 31 miles, is primarily aimed at making broadband network access widely available without the expense of stringing wires (as in cable-access broadband) or the distance limitations of Digital Subscriber Line.

What is WIMAX?

Base Station (BS) The BS is the node that logically connects wireless subscriber devices to operator networks. The BS maintains communications with subscriber devices and governs access to the operator networks.

WIMAX TOWER• A WiMAX tower, similar in concept to a cell-phone tower - A

single WiMAX tower can provide coverage to a very large area as big as 3,000 square miles (~8,000 square km).

Fundamental WiMAX Concepts

Subscriber Station (SS). The SS is a stationary WiMAX-capable radio system that communicates with a base station, although it may also connect to a relay station in multi-hop relay network operations.

WIMAX RECEIVER

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 Wi-Fi access is today

NLOS(Non line of sight): Similar to Wi-Fi, built in or external radio device which connects a host to WiMAX Tower.

LOS(line of sight): Higher speed backhaul connection used between WiMAX towers to extend network.

MODES OF COMMUNICATION

LOS & N-LOS COMMUNICATION

Example of wimax Network

MOBILTY OF WIMAX

DEVELOPEMENT

BENEFITS OF WIMAX• Speed – Faster than broadband service

• Wireless– Not having to lay cables reduces cost– Easier to extend to suburban and rural areas

• Broad Coverage– Much wider coverage than Wi-Fi hotspots

FEATURES OF WIMAX

• Scalability

• Quality of Service

• Range

• Coverage

Optimized for up to 50 Km

Designed to handle many users spread out over kilometres

channel Bandwidth of 3.5, 7, 14 MHz,3, 6 MHz10, 20 MHz;

Maximum Data rate 70 mbps

Optimized for ~100 meters

No “near-far” compensation.

channel Bandwidth of 20Hz

Maximum Data rate 54mbps

802.16(Wimax)802.11(Wi Fi)

Difference Between Wi-Fi and WiMAX

• The advantages include

–Higher Throughput– Low Cost– Lower Latency

Advantages of WiMax over 3G

Deployment of WIMAX IEEE 802.16

Deployment of WIMAX IEEE 802.16e

Applications

WiMAX could bring broadband access into the homes and businesses of millions of people in rural and developing markets.

Portable Internet a reality

End-users to enjoy an “Always Best Connected”

CONCLUSION

References

• http://www.wimax-industry.com/wp/papers/alvarion_Wimax_wp.pdf

• http://www.intel.com/netcomms/technologies/wimax/304471.pdf

• http://www.wimaxforum.org/news/downloads/WiMAXWhitepaper.pdf

• http://www.wimaxforum.org/news/downloads/Applications_for_802.16-2004_and_802.16e_WiMAX_networks_final.pdf

• http://www.wimaxforum.org/news/downloads/WiMAXNLOSgeneral-versionaug04.pdf

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