Primary User Emulation Attack (PUEA), in which attackers emulate primary user signals causing restriction of secondary access on the attacked channels, is a serious security problem in Cognitive Radio Networks (CRNs). An user performing a PUEA for selfishly occupying more channels is called a selfish PUEA attacker. Network managers could adopt a surveillance process on disallowed channels for i...

Spectrum auction is an effective way to improve spectrum efficiency in cognitive networks. All traditional auction framework such as VCG price auction framework and second price auction framework face security risks. Collusion is the most important risk in multi-user cognitive networks. In this paper, we propose a security mechanism for the multi-user cognitive spectrum auction networks. This s...

This paper discusses the introduction of anthropology and sociologyinspired approaches to providing security in collaborative self-aware cognitive radio networks. This includes the introduction of not only trust models, but also respect models and ‘intuition’ models. This paper discusses numerous potential benefits from this type of approach, including benefits to algorithm security, compromise...

The limited spectrum resources and dramatic growth of high data rate communications have motivated opportunistic spectrum access using the promising concept of cognitive radio networks. Although this concept has emerged primarily to enhance spectrum utilization, the importance of energy consumption poses new challenges, because energy efficiency and communication performance can be at odds. In ...

In mobility management, detection of spectrum hole plays very important role for doing spectrum handoff mechanism. Operation of the cognitive radio depends on the spectrum sensing which is the most important task in case of cognitive radio network. Detection of spectrum holes (underutilized sub-bands of the radio spectrum) estimates average power, throughput and utilized time for each spectrum ...

A study by Cisco indicates a drastic increase in mobile data and that almost 66% of the mobile data was videorelated by 2015 [1]. Such dramatic increase in wireless video traffic, coupled with the depleting spectrum resource, poses great challenges to today’s wireless networks. It is of great importance to improve the wireless network capacity by promoting more efficient use of spectrum, which ...

Cognitive radio technology holds great promises in enabling unlicensed operation in licensed bands, to meet the increasing demand for radio spectrum. The (SDRP) Service differentiation routing protocol discovers minimum delay – maximum stability route in dynamic CRNs by considering the availability of spectrum opportunity in addition to switching delay and queuing delay. SDRP achieves better pe...

This paper presents a framework to achieve an efficient dynamic and decentralized spectrum and radio resource usage in heterogeneous wireless network scenarios. The envisaged technical solution follows a layered approach, where Joint Radio Resource Management (JRRM) and Advanced Spectrum Management (ASM) mechanisms are identified at both intra and inter-operator level. The importance of cogniti...

Cognitive radio sensor networks (CRSNs), is a fusion network combining wireless sensor network (WSN) with cognitive radio, undergo radio resource starvation under condition where it is densely deployed and primary user (PU) communications are concentrated. To overcome this problem, we propose a received signal strength (RSS)-based PU localization scheme using the Kalman filter to reduce noise p...