Rádio cognitivo: aspectos de segurança

Abstract

Describes how Cognitive Radio Networks are becoming a very important part of the wireless technology, due to the scarcity of spectrum resources. Cognitive radio is expected to operate in licensed frequency band opportunistically without cause interference to licensed or primary users. As many other new techniques, the security factors are out of focus. The cognitive radio paradigm introduces entirely new classes of security threats and challenges, and providing strong security may be difficult when compared with traditional wireless networks. Wireless devices that can learn from their environment can also to be taught be malicious elements. As the state space for a cognitive radio is made up for a variety of learned beliefs and current sensor inputs, we can modify future behavior of the device just manipulating radio sensor inputs. This work presents the key challenges in providing security in cognitive networks, discusses the emerging IEEE 802.22 cognitive radio standard, and identifies potentials threats along with potential mitigation approaches.