Analysis of energy consumption of the mobile cognitive terminal in heterogeneous network environment

摘要

Energy consumption of mobile cognitive terminal in a heterogeneous environment is investigated based on four different wireless networks, Universal Mobile Telecommunications System (UMTS) as the prior voice service network, Global System for Mobile Communications (GSM) as the alternative voice services network, Wireless Local Area Network (WLAN) as the preferred data service network and Wireless Regional Area Network (WRAN) as the standby data services network. A Markov state transition diagram is formulated to obtain the relationship between the terminal energy consumption and its relevant affecting parameters. A Monte Carlo simulation model is built to validate the relation above. The simulation results fit the theoretical curves well and show that increase of the WLAN network coverage rate and decrease of the UMTS module power are significant for the sake of saving the energy consumption of mobile cognitive terminal.