Wireless sensor networks: A survey on the state of the art and the 802.15.4 and ZigBee standards
Computer Communications
International Journal of Communication Systems - Energy-Efficicent Network Protocols and Algorithms for Wireless Sensor Networks
An Adaptive GTS Allocation Scheme for IEEE 802.15.4
IEEE Transactions on Parallel and Distributed Systems
An optimal GTS scheduling algorithm for time-sensitive transactions in IEEE 802.15.4 networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Performance analysis of GTS allocation in beacon enabled IEEE 802.15.4
SECON'09 Proceedings of the 6th Annual IEEE communications society conference on Sensor, Mesh and Ad Hoc Communications and Networks
Employing IEEE 802.15.4 for Quality of Service Provisioning in Wireless Body Area Sensor Networks
AINA '10 Proceedings of the 2010 24th IEEE International Conference on Advanced Information Networking and Applications
GTS allocation analysis in IEEE 802.15.4 for real-time wireless sensor networks
IPDPS'06 Proceedings of the 20th international conference on Parallel and distributed processing
Delay Analysis for IEEE 802.15.4 CSMA/CA Scheme with Heterogeneous Buffered Traffic
ICMTMA '11 Proceedings of the 2011 Third International Conference on Measuring Technology and Mechatronics Automation - Volume 01
ART-GAS: an adaptive and real-time GTS allocation scheme for IEEE 802.15.4
AINTEC '11 Proceedings of the 7th Asian Internet Engineering Conference
IEEE Transactions on Information Technology in Biomedicine
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The IEEE 802.15.4 standard is able to achieve low-power transmissions in low-rate and short-distance Wireless Personal Area Networks (WPANs). It supports a Guaranteed Time Slots (GTSs) allocation mechanism for time-critical and delay-sensitive data transmissions. However, the inflexible First-Come-First-Served (FCFS) GTS allocation policy and passive deallocation mechanism significantly impair network efficiency. This paper proposes an Adaptive and Real-Time GTS Allocation Scheme (ART-GAS) to provide differentiated services for devices with different priorities, which guarantees data transmissions for time-sensitive and high-traffic devices. The bandwidth utilization in IEEE 802.15.4-based PAN is thus improved. The proposed scheme is developed based on the IEEE 802.15.4 Medium Access Control (MAC) protocol and is fully compatible with the implementation of IEEE 802.15.4 devices. It is applicable to various real-time systems built upon wireless sensor networks. Simulation results demonstrate that our ART-GAS algorithm significantly outperforms the existing GTS mechanism specified in IEEE 802.15.4 in terms of success probability, average delay, average waiting time, and CFP bandwidth utilization.