CAEER: CHANNEL ASSIGNMENT AND ENERGY-EFFICIENT ROUTING PROTOCOL IN COGNITIVE RADIO ADHOC NETWORK

Abstract

One of the main challenging factors for designing routing protocols in cognitive radio ad-hoc network (CRAHNs) is how to select route for which can save energy battery for devices and avoid interference to primary users (PU). To solve this problem. In this paper, we propose channel assignment and energy-efficient routing (CAEER) protocol in multi-hop and multi-channel CRAHNs. The proposed routing scheme suggests an intelligent multi-channel selection function, which is used to assign an appropriate channel for link to build route based on interference avoidance to PUs. Moreover, our routing metrics also consider necessarily the path which reduces energy consumption and control overhead. Our simulation results show that CAEER performs better than weighted cumulative expected transmission time (WCETT) and Multi-radio Multichannel Ad-Hoc on-Demand Distance Vector (MM-AODV) protocols in term of energy consumption and the control overhead.