System-Related Characteristic-Based Leader Election Protocol for Cognitive Radio Networks

Abstract

Cognitive radio networks (CRNs) are new communication paradigm that fulfils the today’s high demand of radio resources. In CRN, the unused spectrum of privileged (licensed or primary user) node is used by other unprivileged (unlicensed or secondary user) nodes, if need be, in opportunistic manner. The control of the network resources is distributed among the autonomous nodes. In order to improve coordination, we need a leader that can coordinate various activities of secondary user (SU) nodes as well as manage resources for quality of service (QoS) requirements. The present work proposes a leader election protocol for cognitive radio network. The protocol identifies a highest priority value node among the n secondary user node, termed as a leader in CRN. The priority index value is calculated from the degree of nodes, scale strength of signal and average channel per node.