IEEE Transactions on Parallel and Distributed Systems
Wcdma for Umts
Wireless and Mobile Network Architectures
Wireless and Mobile Network Architectures
Modeling UMTS discontinuous reception mechanism
IEEE Transactions on Wireless Communications
Bearer reservation with preemption for voice call continuity
IEEE Transactions on Wireless Communications
A weakly consistent scheme for IMS presence service
IEEE Transactions on Wireless Communications
Adaptive energy saving scheme for downlink elastic traffic in wireless networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
WiMAX Location Update for Vehicle Applications
Mobile Networks and Applications
ARIVU: power-aware middleware for multiplayer mobile games
Proceedings of the 9th Annual Workshop on Network and Systems Support for Games
Power management strategies in data transmission
Proceedings of the 16th Asia and South Pacific Design Automation Conference
ARIVU: Making Networked Mobile Games Green
Mobile Networks and Applications
Energy efficient multi-player smartphone gaming using 3D spatial subdivisioning and pvs techniques
Proceedings of the 3rd ACM international workshop on Interactive multimedia on mobile & portable devices
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This paper investigates the power saving mechanism of Universal Mobile Telecommunications System (UMTS). UMTS discontinuous reception (DRX) is exercised between the network and a mobile station (MS) to save the power of the MS. The DRX mechanism is controlled by two parameters: the inactivity timer threshold tI and the DRX cycle tD. Analytic analysis and simulation model are proposed to study the optimal tI and tD selections that maximize the MS power saving under the given mean packet waiting time constraint. We also devise an adaptive algorithm called dynamic DRX (DDRX). This algorithm dynamically adjusts the tI and tD values to enhance the performance of UMTS DRX. Our study quantitatively shows how to select the best inactivity timer and DRX cycle values for various traffic patterns. We also show that DDRX nicely captures the user traffic patterns, and always adjusts the tI and tD close to the optimal values.