Energy management scheme for mobile terminals in energy efficient heterogeneous network

The growing energy consumption driven by dramatic increases in data usage becomes the key issue for the users in meeting demands on longer battery life. Thus, managing energy efficiency should be the first priority for mobile terminals. In this paper, our aim is to improve the users´ energy efficiency in heterogeneous network environments. To this end, we propose a network selection mechanism that exploits both user and network context information in order to efficiently utilize the radio wireless resources in heterogeneous network. The mechanism enables the multi-mode mobile terminal to select and connect to the network of attachment that maximizes its average energy efficiency and guarantees a supported quality of service for its connections. The performance of the proposed mechanism is compared against the maximum battery lifetime scheme and priority LTE access scheme in terms of the energy consumption, the throughput and the energy efficiency. According to simulation results, the system that employs the proposed network selection mechanism achieves better performance improvement in improving the user average throughput and energy efficiency.