(Worldwide Interoperability for Microwave Access)

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“Worldwide Interoperability for Microwave Access”
Presentation transcript:

(Worldwide Interoperability for Microwave Access) WIMAX (Worldwide Interoperability for Microwave Access)

Contents Introduction Working of WIMAX IEEE 802.16 standard 802.16 Architecture IEEE 802.16 Specifications Features of WIMAX Advantages of WIMAX over WIFI WIMAX vs. 3G ISSUES in WIMAX vs. 3G FUTURE OF WIMAX

What is WIMAX? 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.

THINK OF INTERNET There are three possible ways to access internet. Broadband access Uses DSL or cable modem at home and T1 or T3 line at office WIFI Uses WIFI routers at home and hotspots on the road Dial Up Connection

NEW TECHNOLOGY Broadband access is too expensive and WiFi coverage is very sparse. The new technology promises High speed of broadband service Wireless rather than wired access Broad Coverage

A WIMAX system consists of 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). A WiMAX receiver - The receiver and antenna could be a small box or Personal Computer Memory card, or they could be built into a laptop the way WiFi access is today

WIMAX TOWER WIMAX RECEIVER

WIMAX Scenario Consider a scenario where a WiMax-enabled computer is 10 miles away from the WiMax base station. A special encryption code is given to computer to gain access to base station The base station would beam data from the Internet required for computer (at speeds potentially higher than today's cable modems)

WIMAX Scenario The user would pay the provider monthly fee for using the service. The cost for this service could be much lower than current high-speed Internet-subscription fees because the provider never had to run cables The WiMAX protocol is designed to accommodate several different methods of data transmission, one of which is Voice Over Internet Protocol (VoIP) If WiMAX-compatible computers become very common, the use of VoIP could increase dramatically. Almost anyone with a laptop could make VoIP calls

WIMAX CHIPS WiMAX Mini-PCI Reference Design Intel’s first WIMAX chip

FEATURES OF WIMAX Scalability Quality of Service Range Coverage

RANGE Optimized for up to 50 Km Designed to handle many users spread out over kilometres Designed to tolerate greater multi-path delay spread (signal reflections) up to 10.0μ seconds PHY and MAC designed with multi-mile range in mind

BENEFITS OF WIMAX Speed Wireless Broad Coverage 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 WiFi hotspots

Benefits to Customers Range of technology and service level choices from both fixed and wireless broadband operators DSL-like services at DSL prices but with portability Rapidly declining fixed broadband prices No more DSL “installation” fees from incumbent

Advantages of WiMax over 3G Using an assortment of proprietary and standards-based technologies, such as OFDM and W-CDMA ,WiMax has a clear advantage over 3G The advantages include Higher Throughput Low Cost Lower Latency

Advantages of WiMax over 3G

USES OF WIMAX

FUTURE WiMax will be deployed in three stages In the first phase WiMaX technology (based on IEEE 802.16-2004) provides fixed wireless connections In the second phase WiMaX will be available as a cheap and self-installing Subscriber Terminal (ST), linked to PC and to antenna The third phase enables portability, thus WiMAX (based on IEEE 802.16e) will be integrated into commercial laptops

Promises

ISSUES in 3G vs. WIMAX Deployment of the network WIMAX deployment is in the planning stages and it might take 3-5 years in providing reasonable coverage in well populated areas WiMax may initially be relegated to college campuses and larger corporate campuses where people are less mobile and costs containment is important

ISSUES in 3G vs. WIMAX Cost Issue The main reason to opt for WIMAX is its low cost. The price paid per Hz for WIMAX spectrum is as much as 1000 times lower than for 3G spectrum The low cost of WIMAX spectrum compared to 3G is a clear driver for service providers to enter the field of wireless services with WIMAX

Conclusion (The Final Issue) Will WIMAX replace 3G? Along with the forthcoming standardization, WiMAX has the potential to substitute 3G and become a promising 4G WiMAX has its distinct identity as either a stand-alone solution for incumbent and competitive fixed network operators or as complementary radio access solution for established 2G and 3G cellular network operators Fixed-line operators, on the one hand, may consider WiMAX as a viable alternative to add mobility to the service portfolio, leveraging their huge subscriber base, in particular in countries where 3G licensing is delayed or not affordable

Thank U all Any quarries?