Wimax standards and Security The Wimax

Mobility Support for IEEE 802.16e System 103

Hyun-Ho Choi and Dong-Ho Cho

7. Measured Signal-Aware Mechanism for Fast Handover

in WiMAX Networks 129

Jenhui Chen and Chih-Chieh Wang

8. 802.16 Mesh Networking 147

Petar Djukic and Shahrokh Valaee

9. WiMAX Testing 175

Rana Ejaz Ahmed
v
vi Contents
Part II Security

10. An Overview of WiMAX Security 197

Eduardo B. Fernandez and Michael VanHilst

11. Privacy and Security in WiMAX Networks 205

Amitabh Mishra and Nolan Glore

12. WiMAX Security: Privacy Key Management 229

Nirwan Ansari, Chao Zhang, Yuanqiu Luo, and Edwin Hou

Index 251

Preface

The demand for broadband services is growing exponentially. Traditional solutions that provide high-speed broadband access use wired access tech- nologies, such as traditional cable, digital subscriber line, Ethernet, and fiber optic. It is extremely difficult and expensive for carriers to build and maintain wired networks, especially in rural and remote areas. Carriers are unwilling to install the necessary equipment in these areas because of little profit and potential. WiMAX will revolutionize broadband communications in the developed world and bridge the digital divide in developing coun- tries. Affordable wireless broadband access for all is very important for a knowledge-based economy and society. WiMAX will provide affordable wire- less broadband access for all, improving quality of life thereby leading to economic empowerment.

Broadband wireless access technical solutions and products have been
available for some time. These technologies have primarily focused on pro- viding high data rate connectivity wirelessly between fixed stationary sites. These technical solutions are proprietary in nature and suffer from poor inter- operability with other broadband wireless access products and have a high cost due to the lack of economy of scale. High-speed wireless services have already achieved great success in local area networks with the IEEE 802.11 standard and Wi-Fi certified products.
The IEEE 802.16 BWA technology family, referred to as Worldwide Inter- operability for Microwave Access intends to provide a standardized BWA solution. The IEEE Standards Board established the IEEE 802.16 working group in 1999 to prepare formal specifications for global deployment of broad- band Wireless Metropolitan Area Networks, officially called WirelessMAN. The WiMAX Forum, created in 2003, is promoting the commercialization of IEEE 802.16 and the European Telecommunications Standard Institute’s high-performance radio MAN. The IEEE 802.16 specifications continue to evolve and expand in capabilities in support of the evolving vision of WiMAX usage and deployment. The IEEE 802.16e system called Mobile WiMAX has been standardized to add user mobility to the original IEEE 802.16 system.
WiMAX has a strong base of standardization and industry support that pro-
vides a strong evolutionary path of its capabilities. WiMAX competes with IEEE 802.11-based WLAN technology, broadband residential Internet tech- nologies such as digital subscriber line and cable and third-generation cellular technologies. WiMAX is the next step in the mobile technology evolution path. WiMAX will broaden wireless access to metropolitan area networks. WiMAX offers numerous advantages, such as improved performance and