A Secure Collaborative Spectrum Sensing Mechanism based on User Trust in Cognitive Radio Networks
نویسندگان
چکیده
The rapid growth of wireless applications has increases the importance for efficient utilization of the scarce spectrum resources. Cognitive Radio Network (CRN) is an emerging technology which leads to solve these problems through dynamic utilization of the unused licensed spectrum. Spectrum sensing is a key function of cognitive radio to find the spectrum holes and Collaborative or cooperative sensing has been proposed to improve the ability. On the other hand, the flexibility in collaborative spectrum sensing opens way to a number of security vulnerabilities. While the set of security challenges in CRN are diverse, this work focus on one of these major threats called Spectrum Sensing Data Falsification (SSDF) attack or Byzantine
منابع مشابه
Secure Collaborative Spectrum Sensing in the Presence of Primary User Emulation Attack in Cognitive Radio Networks
Collaborative Spectrum Sensing (CSS) is an effective approach to improve the detection performance in Cognitive Radio (CR) networks. Inherent characteristics of the CR have imposed some additional security threats to the networks. One of the common threats is Primary User Emulation Attack (PUEA). In PUEA, some malicious users try to imitate primary signal characteristics and defraud the CR user...
متن کاملSpectrum Sensing Data Falsification Attack in Cognitive Radio Networks: An Analytical Model for Evaluation and Mitigation of Performance Degradation
Cognitive Radio (CR) networks enable dynamic spectrum access and can significantly improve spectral efficiency. Cooperative Spectrum Sensing (CSS) exploits the spatial diversity between CR users to increase sensing accuracy. However, in a realistic scenario, the trustworthy of CSS is vulnerable to Spectrum Sensing Data Falsification (SSDF) attack. In an SSDF attack, some malicious CR users deli...
متن کاملInvestigation of Always Present and Spectrum Sensing based Incumbent Emulators
Cognitive radio (CR) technology has been suggested for effective use of spectral resources. Spectrum sensing is one of the main operations of CR users to identify the vacant frequency bands. Cooperative spectrum sensing (CSS) is used to increase the performance of CR networks by providing spatial diversity. The accuracy of spectrum sensing is the most important challenge in the CSS process sinc...
متن کاملDefending against Multifaceted Attacks in Wireless Networks and Power Grid Networks by Wenkai Wang a Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Electrical Engineering
It is well known that cyber security plays a critical role in ensuring functionality and reliability of increasingly ubiquitous communication systems and critical infrastructures. Compared with the traditional attacks that target individual users, protocols, or components in the complicated systems, the emerging attacks can 1) exploit collaboration among multiple users or network nodes, 2) expl...
متن کاملA Trust Game Model and Algorithm for Cooperative Spectrum Sensing in Cognitive Radio Networks
The existence of malicious secondary users will bring damage to the performance of cooperative spectrum sensing and spectrum access in cognitive radio networks, so effectively curbing malicious behavior of secondary users become the key to success for cooperative spectrum sensing mechanism. Inspired by economics of repeated game theory, a trust game model and algorithm of distributed cooperativ...
متن کامل