WiMAX and its impact on wireless communication

1. WiMAX and its impact on wireless communication Presented by Zhen-Yu Fang

2. What is WiMAX? • WiMAX: Worldwide Interoperability for Microwave Access • It is a telecommunications technology • It is based on IEEE 802.16 standard, which is called Wireless MAN (metropolitan area networks) • The last mile that can be used as alternative of cable and DSL internet access

3. The Architecture of WiMAX

4. The Architecture of WiMAX • WiMAX Mobility Subscriber Station Mobile subscribers (MS) use mobile subscriber stations (MSS)—generalized mobile equipment that provides connectivity between subscriber equipment and base station equipment • WiMAX Access Service Network Access Service Network (ASN) is defined as a complete set of network functions that provide radio access to a WiMAX subscriber, including a proxy AAA server, DHCP addressing function, and other IP-based resources, including network management • WiMAX Connectivity Service Network Connectivity Service Network (CSN) is defined as a set of network functions that provide IP connectivity services to the WiMAX subscribers through the ASN

5. The Architecture of WiMAX • Network Access Provider (NAP) Owns the network and operates • Network Service Provider (NSP) Owns the subscriber and provides service. NSPs shares the NAP or a NSP uses multiple NAPs • Application Service Provider (ASP) provides application services.

6. The Features of WiMAX • Long Rang Connectivity from long range is much highlighted feature of WiMAX. Theoretically, it can provides range up to 30 miles. • Mobility Another significant feature of WiMAX technology is connectivity on move. • Interfacing Since one Base station covers limited range so connecting multiple base stations to each other increase that much range for connectivity. • Accessibility Accessing WiMAX base station is not a difficult task, its long range capability provides connectivity at home from base stations within the range.

7. Compare with WiFi and WiMAX • WiFi: • Used for developing wireless LAN to access high speed Internet or access just a network for file sharing and software services. • Mostly connected to network in certain area which may not be connect to Internet. • Shows that quality of service (QoS) is relative to packet flow. • WiMAX: • Refer as Wireless broadband access, which can transfer not only data but also voice data, video data etc and at much higher rates. • There are multiple standards of 802.16 a, b etc, so they are used for different types of access from mobile connectivity to fixed location connections. • Shows that quality of service (QoS) parameters can be guaranteed for each flow.

8. Security Issues and Risks

9. Conclusion WiMAX is a powerful wireless services access platform that will increasingly support a wide range of revenue-generating voice and data applications for network service provides around the globe.

10. Reference • Mustafa Ergen, The Access Service Network in WiMAX: The Role of ASN-GW, WiChorus Inc.. • Mahmoud Nasreldin, Heba Aslan, Magdy EL-Hennawy, and Adel El-Hennawy, WiMAX Security, 22nd International Conference on Advanced Information Networking and Applications, pp. 1335-1340, 2008. • WiMAX WiFi And Wireless Network, online article on <http://www.wifinotes.com/wimax/index.html> • WiMAX Security for Real-World Network Service Provider Deployments, Motorola Inc., 2007