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Advanced Energy Saving Mechanism for Multi-Radio Multi-Channel Wireless Mesh Networks

Authors: 

Samreen Umer, Ken Brown, Cormac Sreenan

Publication Type: 
Refereed Conference Meeting Proceeding
Abstract: 
In multi-radio multi-channel wireless mesh networks, energy saving mechanisms try to save energy by putting radios into sleep mode. The decision to switch energy states of radios is taken based on parameters like remaining energy or traffic requests at nodes. In IEEE 802.11 power saving mode (PSM), nodes turn off the radios whenever there is no traffic to receive, send or forward. Nodes wake up radios periodically to check if there is any new traffic demand. Due to waking up radios redundantly and a requirement of tight synchronization PSM misses opportunities to save energy in the multi radio scenario. We propose an advanced energy saving method (AESM), where each node makes an independent decision on switching radios states while satisfying QoS requirements for different types of traffic flows. Experimental evaluation shows that AESM reduces energy consumption by 20% over PSM, while also reducing delay and packet loss to maintain QoS for network performance.
Conference Name: 
2018 IEEE 29th Annual Internation Symposium on Personal, Indoor and Mobile Radio Communications
Digital Object Identifer (DOI): 
10.1109/PIMRC.2018.8581044
Publication Date: 
09/09/2018
Conference Location: 
Italy
Institution: 
National University of Ireland, Cork (UCC)
Open access repository: 
No