In this paper, we study the current security standards in multihop WiMAX networks and their security issues. For secured communications, hop-by-hop authentication is necessary for any multihop wireless networks [5][6]. WiMAX multihop networks provide default hop-by-hop authentication in a distributed security mode only. Apart from this, the multihop standards should consider the existing security issues in mobile WiMAX standard [4]. The new multihop standard IEEE 802.16m has improved functionalities and security support. It provides the solution for medium access control (MAC) - control message issues. At the same time, network coding is used for enhanced-multicast broadcast service (E-MBS) retransmission to improve the performance of MBS. However, the standard IEEE 802.16m/D4 fails to consider the security threats for network coding, multihop support and initial ranging. For the above issues, we propose a distributed security architecture using the Elliptic Curve Diffie-Hellman (ECDH) key exchange protocol. Our proposed architecture solves the network coding and other multihop security issues with the help of neighbor authentication/security association (SA), distributed security architecture and ECDH protocol.

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2010 8th International Conference on Privacy, Security and Trust, PST 2010
Department of Systems and Computer Engineering

Rengaraju, P. (Perumalraja), Lung, C.H, & Srinivasan, A. (Anand). (2010). Design of distributed security architecture for multihop WiMAX networks. Presented at the 2010 8th International Conference on Privacy, Security and Trust, PST 2010. doi:10.1109/PST.2010.5593247