Overview of IEEE 802.16 Security
IEEE Security and Privacy
Security issues in privacy and key management protocols of IEEE 802.16
Proceedings of the 44th annual Southeast regional conference
Responding to Security Issues in WiMAX Networks
IT Professional
An analysis of mobile WiMAX security: vulnerabilities and solutions
NBiS'07 Proceedings of the 1st international conference on Network-based information systems
Security of IEEE 802.16 in mesh mode
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
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In this paper, we study the rekeying issue in IEEE 802.16e WiMAX networks. The existing rekeying scheme - the Multicast and Broadcast Rekeying Algorithm (MBRA) unicasts new keys to each subscriber station (SS). This scheme does not scale well since it incurs large communication overhead when the number of SSs increase. In our work, first we propose a general tree-based rekeying scheme, which is more efficient than the MBRA. We then formulate an optimization problem to determine the optimal tree structure for a given number of SSs. Furthermore, we design a novel and efficient rekeying scheme for WiMAX networks. Our new rekeying scheme utilizes efficient security primitives and application features of WiMAX networks. Both analysis and performance evaluation show that the new rekeying scheme can significantly reduce communication overhead.