Type of Document Master's Thesis Author Valero, Marco Author's Email Address mvalerorangel1@student.gsu.edu, marcoavalero@gmail.com URN etd-04132009-155150 Title Implementing Energy-Saving Improvements to the IEEE 802.15.4 MAC Protocol Degree Master of Science Department Computer Science Advisory Committee
Advisor Name Title Dr. Raheem Beyah Committee Chair Dr. Anu Bourgeois Committee Co-Chair Dr. Xiaojun Cao Committee Member Dr. Yingshu Li Committee Member Keywords
- Energy consumption
- Wireless personal area networks
- Wireless sensor networks
- MAC layer implementation
- MAC layer protocols
- IEEE 802.15.4
- Energy-efficient protocol
Date of Defense 2009-04-08 Availability unrestricted Abstract IEEE 802.15.4 is a standard designed for low data rate wireless personal area networks (WPANs) intended to provide connectivity to mobile devices. Such devices present considerable storage, energy, and communication constraints. However, they can be used in a variety of applications like home/office automation, environmental control and more. In order to extend the lifetime of the WPAN, we propose some changes to the standard including modifications to the Superframe Guaranteed Time Slot (GTS) distribution which can be optimized to reduce energy consumption. We implemented the proposed improvements to the IEEE 802.15.4 protocol using real sensor nodes. Specifically, we conducted an energy study of the proposed acknowledgment-based GTS descriptor distribution scheme and compared the results with the standard implementation. Experiments show that the proposed changes reduce energy consumption up to nearly 50% when 7 devices allocate guaranteed time slots descriptors during normal communication.Files
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