A Mobility Prediction Architecture Based on Contextual Knowledge and Spatial Conceptual Maps
IEEE Transactions on Mobile Computing
Context-for-wireless: context-sensitive energy-efficient wireless data transfer
Proceedings of the 5th international conference on Mobile systems, applications and services
Energy-aware network selection using traffic estimation
Proceedings of the 1st ACM workshop on Mobile internet through cellular networks
A DBN approach for network availability prediction
Proceedings of the 12th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Participatory mobile social network simulation environment
MobiOpp '10 Proceedings of the Second International Workshop on Mobile Opportunistic Networking
Realistic data transfer scheduling with uncertainty
Computer Communications
Network availability prediction with hidden context
Performance Evaluation
EMUNE: Architecture for Mobile Data Transfer Scheduling with Network Availability Predictions
Mobile Networks and Applications
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Most mobile devices nowadays can simultaneously connect to different access networks with different characteristics at different times. Most solutions proposed for such an environment are reactive in nature. For example, when networks are encountered, the device performs a vertical handover to the network that offers the highest bandwidth. But the cost of handover may not be justified if that network is only available for a short time. Knowledge of future network availability and its capabilities would help to proactively handle the handover process more intelligently. Network availability prediction is often addressed as user path predictions with network coverage maps. In contrast, we model it as a more robust context prediction problem that can use any of the available context variables like GSM cell ID, WLAN AP, whether the power cable plugged, number of people around etc. Specifically, we propose a Semi-Markovian context prediction model to predict WLAN availability. As collecting and processing context consumes power, we propose a method to rank each context variable according to their contributions to prediction accuracy. We also employ the same method for optimizing model parameters. Real user data collected in our experiments show that when WLAN status is static, prediction errors are nearly zero and even in changing environments, error is less than 26% on average and the obtained context variable ranking is realistic.