A unified security framework for WiMAX over EPON access networks

Abstract

Passive optical networks (PONs) offer a popular broadband access solution allowing for high bandwidth and long transmission range to meet user fast evolving needs. However, in certain applications, PON deployment cannot reach the end user, because geographic restrictions make fiber installation non-cost effective. Recently, hybrid fiber--wireless (FiWi) access networks have been proposed to combine the advantages of optical and wireless technologies and integrate them seamlessly. However, this integrated wired and wireless access network raises new security issues that need to be addressed. This paper reviews the architectures of currently proposed integrated access networks, proposes a new Worldwide Interoperability for Microwave Access (WiMAX) over Ethernet PON (EPON) architecture which achieves simplified and efficient system management. We present a unified security framework for the proposed architecture using Public Key Infrastructure (PKI). Through our analysis, we show that this security framework enhances the system security and realizes unified key management.