CSE 338 : Term PaperCSE 338 : Term Paper

WiMAX :WiMAX :Worldwide Advancement Worldwide Advancement

and and Bangladesh AspectsBangladesh Aspects

IntroductionIntroduction

Considerable uncertainty exists Considerable uncertainty exists about the future evolution of about the future evolution of mobile networks and services. mobile networks and services. From the simple voice and text From the simple voice and text messaging services of today, an messaging services of today, an efficient move towards richer efficient move towards richer multimedia and broadband multimedia and broadband services is the WiMAX. services is the WiMAX.

What is WiMAX What is WiMAX ??

WiMax (Worldwide Interoperability for WiMax (Worldwide Interoperability for Microwave Access) is a standards-Microwave Access) is a standards-based technology enabling the based technology enabling the delivery of last mile wireless delivery of last mile wireless broadband access as an alternative to broadband access as an alternative to cable and DSL.cable and DSL.

The technology is specified by the The technology is specified by the Institute of Electrical and Electronics Institute of Electrical and Electronics Engineers Inc., as the IEEE 802.16 Engineers Inc., as the IEEE 802.16 standard.standard.

Figure: WiMAX NetworkFigure: WiMAX Network

History of WiMAX History of WiMAX ??(cont.)(cont.)

The 802.16 project started in 1998. The aim was to make broadband wireless access more widely and cheaply available through a standard for wireless metropolitan area networks.

The first version of the standard, 802.16, was published in April 2002 and addressed fixed, line of sight connections for the ‘first mile/last mile’ link.

The IEEE The IEEE 802.16e802.16e standard is an standard is an amendment to the 802.16 - 2004 base amendment to the 802.16 - 2004 base specification and targets the mobile specification and targets the mobile market by adding portability and the ability market by adding portability and the ability for mobile clients.for mobile clients.

IEEE – The association IEEE – The association that gives the standardsthat gives the standards

IEEE is the world's leading professional IEEE is the world's leading professional association for the advancement of association for the advancement of technology. technology.

It is a non-profit organization.It is a non-profit organization.

IEEE is a leading authority on areas IEEE is a leading authority on areas ranging from computers and ranging from computers and telecommunications to biomedical telecommunications to biomedical engineering, electric power and engineering, electric power and consumer electronics among others.  consumer electronics among others.  

The 802 StandardsThe 802 Standards IEEE Project IEEE Project

802 develops 802 develops LAN and MAN LAN and MAN standards, standards, mainly for the mainly for the lowest two lowest two layers of Open layers of Open Systems Inter-Systems Inter-connection connection (OSI).(OSI).

Architecture of WiMAXArchitecture of WiMAX

Technical Specifications Technical Specifications of 802.16of 802.16

The technical details and The technical details and features that differentiate WiMAX features that differentiate WiMAX certified equipment from WiFi or certified equipment from WiFi or other technologies can best be other technologies can best be illustrated by focusing on the illustrated by focusing on the physical (PHY) or RF physical (PHY) or RF transmissions and the media transmissions and the media access control (MAC) layer access control (MAC) layer design. design.

WiMAX - Physical LayerWiMAX - Physical Layer The WiMAX physical layer is based on The WiMAX physical layer is based on

Orthogonal Frequency Division Orthogonal Frequency Division Multiplexing (OFDM). Multiplexing (OFDM).

OFDM is the transmission scheme of OFDM is the transmission scheme of choice to enable high-speed data, choice to enable high-speed data, video, and multimedia communications.video, and multimedia communications.

It is used by a variety of commercial It is used by a variety of commercial broadband systems, including DSL, Wi-broadband systems, including DSL, Wi-Fi, Digital Video Broadcast-Handheld Fi, Digital Video Broadcast-Handheld (DVB-H), besides WiMAX.(DVB-H), besides WiMAX.

WiMAX - MAC LayerWiMAX - MAC Layer The IEEE 802.16 MAC was designed for point-The IEEE 802.16 MAC was designed for point-

to-multipoint (PMP) broadband wireless to-multipoint (PMP) broadband wireless access applications. access applications.

The primary task of the WiMAX MAC layer is The primary task of the WiMAX MAC layer is to provide an interface between the higher to provide an interface between the higher transport layers and the physical layer.transport layers and the physical layer.

The MAC layer design includes a The MAC layer design includes a convergence sublayer that can interface with convergence sublayer that can interface with a variety of higher-layer protocols, such as a variety of higher-layer protocols, such as ATM TDM Voice, Ethernet, IP, and any ATM TDM Voice, Ethernet, IP, and any unknown future protocol.unknown future protocol.

Comparison between WiFi & WiMAXComparison between WiFi & WiMAX

Why We Will Converge To Why We Will Converge To WiMAXWiMAX

Figure: Worldwide Broadband Market GrowthFigure: Worldwide Broadband Market Growth

Economical view of WiMAXEconomical view of WiMAX

Economical view of WiMAX Economical view of WiMAX (cont.)(cont.)

Figure: Worldwide Broadband Wireless AccessFigure: Worldwide Broadband Wireless Access

Bangladesh AspectBangladesh Aspect Agni Systems Ltd, an Internet service provider in Agni Systems Ltd, an Internet service provider in

Bangladesh, has started a phased WiMAX Bangladesh, has started a phased WiMAX deployment to provide wireless broadband access deployment to provide wireless broadband access in Dhaka, and then gradually to other in Dhaka, and then gradually to other metropolitan cities.metropolitan cities.

Commercial services are expected to start in Commercial services are expected to start in January 2007 and the entire deployment is January 2007 and the entire deployment is expected to be completed by mid-2008. expected to be completed by mid-2008.

Phase 1 will be a fixed outdoor solution using Phase 1 will be a fixed outdoor solution using Motorola's Access Point 100 series system.Motorola's Access Point 100 series system.

Phase 2 is expected to start at the end 2007 with Phase 2 is expected to start at the end 2007 with MIMO techniques. MIMO techniques.

Bangladesh Bangladesh Aspect(cont.)Aspect(cont.)

Sectors that can be implemented:Sectors that can be implemented: Corporate FirmsCorporate Firms Banking SectorsBanking Sectors Software FirmsSoftware Firms Educational InstitutionsEducational Institutions E-CommerceE-Commerce Delivering the latest newsDelivering the latest news

ConclusionConclusion Broadband wireless access provides more Broadband wireless access provides more

capacity at lower cost than DSL or cable capacity at lower cost than DSL or cable for extending the fiber networks and for extending the fiber networks and supporting multimedia and fast Internet supporting multimedia and fast Internet applications in the enterprise or home. applications in the enterprise or home.

Mobile broadband is the segment with Mobile broadband is the segment with the fastest growth in mobile the fastest growth in mobile communications. WiMAX can complement communications. WiMAX can complement 3G and offer high-performance, affordable 3G and offer high-performance, affordable mobile broadband services targeted to mobile broadband services targeted to the mass market.the mass market.