Energy-Efficient Location Logging for Mobile Device

Location logging is a technique that continuously records user´s location using various location sensing and positioning technologies. Location logs and information derived from those logs can be useful contexts for various applications. However, previous research related to recording and handling location logs failed to seriously consider heavy battery consumption. Heavy battery consumption is a serious problem in location logging research and applications, and it has obstructed location logging applications to be widely used. In this paper, we present Variable Rate Logging (VRL) mechanism to maximize battery life of continuous logging for user´s location with minimum loss of logging quality. Our mechanism can optimize any application which requires continuous recording of user´s location and dramatically extend its battery life. Evaluation results show that Variable Rate Logging mechanism has 143% longer battery life than fixed rate logging.