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Frame/Slot Allocation Method for Real-time Traffic in IEEE 802.15.4 Wireless Sensor Networks  

Kim, Hyung-Seok (Department of Information and Communication Engineering, Sejong University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea CI / v.44, no.3, 2007 , pp. 49-56 More about this Journal
Abstract
The IEEE 802.15.4 low rate wireless personal area network is a protocol suitable for wireless sensor networks. Thus there has been growing interest in the IEEE 802.15.4 protocol in the home automation networks. This paper proposes a scheduling scheme obtaining optimal parameters regarding the IEEE 802.15.4 frame and subframes in the home automation networks. Guaranteed time slots (GTS) are exploited for the delivery of real-time traffic. Given a set of the requirements for bandwidths and periods assigned to nodes in the network, the beacon interval and the active/inactive subframe duration satisfying the requirements are selected considering the low duty cycle by the proposed scheme. Based on these parameters, analytic results provide the way to efficient use of network resources including energy.
Keywords
802.15.4; real-time traffic; scheduling; GTS; duty cycle;
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