Enhanced IEEE 802.11 Power Saving for Multi-Hop Toy-to-Toy Communication
2013 (English)Conference paper (Refereed)
In the future Internet of Things (IoT), battery-powered devices equipped with short range radios may needto communicate with each other over multi-hop links. This maysignificantly increase their energy consumption. Whereas mostresearch on IoT assumes that the devices use energy-efficientIEEE 802.15.4 wireless transceivers, we focus on IEEE 802.11because of its wide penetration in consumer electronics such astoys. We extend the IEEE 802.11 power saving mode (PSM),which allows the devices to enter the low-power doze state,with a traffic announcement scheme that facilitates multi-hopcommunication. The scheme propagates traffic announcementsalong multi-hop paths to ensure that all intermediate nodesremain awake to forward the pending data frames with minimumlatency. Simulation results show that the proposed Multi-HopPSM (MH-PSM) improves both end-to-end delay and doze timecompared to the standard PSM. MH-PSM is practical andsoftware-implementable since it does not require changes to theparts of the IEEE 802.11 medium access control that are typicallyimplemented in hardware.
Place, publisher, year, edition, pages
IEEE Computer Society, 2013.
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-128571OAI: oai:DiVA.org:kth-128571DiVA: diva2:648191
The 2013 IEEE International Conference on Internet of Things, Beijing, China, 20-23 August 2013
QC 201311282013-09-132013-09-132013-11-28Bibliographically approved