Bilkent University
Department of Computer Engineering


Energy Efficient IP-Connectivity with IEEE 802.11 for the Home M2M Networks


İhsan Mert Özçelik
MSc Student
Computer Engineering Department
Bilkent University

Machine-to-machine communications (M2M) is a trending and rapidly developing technology for large-scale networking of devices. Some of the currently envisioned applications are smart appliances, building automation and structural control, transportation and logistics, healthcare, public safety and surveillance, and environmental monitoring. It is also expected that the home of the future will be equipped with devices connected to such a home network. Crucial bottleneck for the home M2M networks is the gap between scientific environments and real life deployments.

To wirelessly make embedded devices capable of IP-networking, using Wi-Fi can be ideal solution for real life deployment since Wi-Fi is popular and commonly used in home networks. However, existing infrastructure with IEEE 802.11 for such networks needs energy saving mechanisms to be applied in M2M networks.

This study shows how to integrate Wi-Fi technology into smart embedded devices for smart home systems in an energy-efficient manner. A novel approach for energy savings is proposed based on IEEE 802.11 wireless local area network power save mode (PSM) and a deep sleep-wake scheduling algorithm. This approach is implemented with no change to the standard PSM transmission scheme in IEEE 802.11 MAC. The proposed scheme also benefits from multicast DNS (mDNS) protocol messages without affecting device availability.

The approach in the study is demonstrated with a prototype implementation on Smart Appliances. By using this prototype, performance evaluation of the proposed scheme is done. Test results obtained from the prototypes concludes that conservation of up to about 60 % compared to the standard infrastructure can be achieved.


DATE: 31 March, 2014, Monday @ 16:10