Constructing secured cognitive wireless networks: experiences and challenges

Abstract

Recent development in wireless communications has lead to the problem of growing spectrum shortage. Cognitive radio, as a novel technology, has been proposed in recent years to solve this problem by dynamically accessing the spectrum so as to enhance the spectrum utilization. Security in cognitive radio networks has become a challenging issue because there are more chances open to attackers by cognitive radio technology, compared to those from conventional wireless networks. These weaknesses and vulnerable aspects, introduced by the nature of cognitive radio, may cause serious impact on the security and quality of service (QoS) provisioning for the entire network. Unfortunately, at present, there is no specific secure protocol designed for cognitive radio networks. Therefore, in this paper, we conduct a high-level survey to review and reflect the state-of-the-art work on the security issues in cognitive networks. We focus on analyzing the security system at the macroscopic level, where both protection and detection are considered to be the most essential parts to ensure security in the whole network. Furthermore, we investigate special characteristics of cognitive networks at different protocol layers, including physical layer, link layer, network layer, transport layer and application layer. We recognize both the challenges and experiences, and focus on constructing the secured cognitive wireless networks.

Security Analysis on Cognitive Radio Network

“…Also the average packet rate is monitored. If the packet rate is higher and last for long period, then there is a possibility of some unusual activity (Zhang and Li, 2010).…”

“…If the retransmissions are occurring very frequently or the round trip time is longer than the average value, then we can say that there is some unusual activity in the network. An intrusion detection scheme based on RSS and RTT detection can be used to detect attacks at this layer (Zhang and Li, 2010).…”

The Research of Network Security Based on Cognitive Radio

“…In a distributed spectrum sensing process, the attacker sends the wrong message spectrum sensing data collection center, which leads to bad decision making, data collection center, shown in Figure 1 [11] FIG. This is the most common perception of tampering with data.…”

Research and Analysis on Cognitive Radio Network Security

“…In the process of distributed Spectrum Sensing, the attacker sends the wrong Spectrum Sensing information to data collection center, which caused make the wrong decision by data collection center, shown in Figure 1 [11]. This is the most common perception tamper with the data.…”