ABSTRACT
IEEE 802.16 standard specifi es air interfaces for fi xed and mobile point to multipoint broadband wireless systems, including Medium Access Control (MAC) and physical (PHY) layers. Th e security sublayer of IEEE 802.16 provides subscribers with encryption and authentication services across broadband wireless networks. In addition, a digital-certifi cate-based Subscriber Station (SS) device authentication model provides operators with strong protection from theft of service. Th e security sublayer employs an authenticated client/server key management protocol in which a Base Station (BS), the server, controls distribution of keying material to clients, SSs. In this chapter, we provide an overview of the IEEE 802.16 security sublayer and detailed operation of Private Key Management (PKM) protocol versions 1 and 2.
