Title :
Improving smartphone battery life utilizing device-to-device cooperative relays underlaying LTE networks
Author :
Tuan Ta ; Baras, John S. ; Chenxi Zhu
Author_Institution :
Inst. for Syst. Res., Univ. of Maryland, College Park, MD, USA
Abstract :
The utility of smartphones has been limited to a great extent by their short battery life. In this work, we propose a new approach to prolonging smartphone battery life. We introduce the notions of valueless and valued battery, as being the available battery when the user does or does not have access to a power source, respectively. We propose a cooperative system where users with high battery level help carry the traffic of users with low battery level. Our scheme helps increase the amount of valued battery in the network, thus it reduces the chance of users running out of battery early. Our system can be realized in the form of a proximity service (ProSe) which utilizes a device-to-device (D2D) communication architecture underlaying LTE. We show through simulations that our system reduces the probability of cellular users running out of battery before their target usage time (probability of outage). Our simulator source code is made available to the public.
Keywords :
Long Term Evolution; cooperative communication; relay networks (telecommunication); smart phones; D2D communication architecture; LTE networks; ProSe; cellular user probability; cooperative system; device-to-device cooperative relays; high battery level; low battery level; outage probability; power source; proximity service; simulator source code; smart phone battery life; valued battery; valueless battery; Algorithm design and analysis; Batteries; Channel models; Interference; Power demand; Uplink; Wireless communication;
Conference_Titel :
Communications (ICC), 2014 IEEE International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/ICC.2014.6884157