A Trust Value-Based Spectrum Allocation Algorithm in CWSNs

Abstract

With the increase of congestible frequency spectrums and the rapid development of wireless sensor networks (WSNs) applications, the new technology-combing cogitative radio technology with WSNs-called CWSNs will bring broad prospects to the field of radio and sensor networks. CWSN devotes itself to the solution of spectrum sharing in forms of networks, such as IEEE 802.11 and Bluetooth. A new algorithm is proposed for allocating the idle spectrum to secondary users (SUs). This algorithm uses "the last diminisher" algorithm, which appears in fair division models. It can help solve complicated problems in a simple fashion. This article combines the trust value and the method of spectrum allocation. The concept of trust value in reputation management is introduced. All the factors are applied to solve the realistic problems of spectrum allocation. With the growing number of sensor nodes, the stable throughput is of vital importance.

A Channel Selection Model Based on Trust Metrics for Wireless Communications

“…Very few papers focus on spectrum allocation or channel selection based on the trust concept. One of the first contributions in this direction is [25], where the authors propose a trust algorithm that combines the trust value and the method of spectrum allocation. During the spectrum allocation, the reputation value is fixed and cannot be changed.…”

Honesty Factor (HF) based Security Breach Management Technique in Cognitive Radio Network

“…Indirect attacks help in preventing attacks for the long run focusing on future perspectives. A trust valuebased spectrum allocation methodology has been proposed in [19], in which the secondary users with fair trust value are only allowed to pair with unused Primary spectrum space and discards the SU pairing if the trust value is lower. In paper [20], the author has proposed a multiuser scheduling scheme, which safeguards the physical layer transmission in cognitive radio networks.…”