Channel and timeslot co-scheduling with minimal channel switching for data aggregation in MWSNs.

Journal article


Yeoum, Sanggil, Kang, Byungseok, Lee, Jinkyu and Choo, Hyunseung 2017. Channel and timeslot co-scheduling with minimal channel switching for data aggregation in MWSNs. Sensors. https://doi.org/10.3390/s17051030
AuthorsYeoum, Sanggil, Kang, Byungseok, Lee, Jinkyu and Choo, Hyunseung
Abstract

Collision-free transmission and efficient data transfer between nodes can be achieved through a set of channels in multichannel wireless sensor networks (MWSNs). While using multiple channels, we have to carefully consider channel interference, channel and time slot (resources) optimization, channel switching delay, and energy consumption. Since sensor nodes operate on low battery power, the energy consumed in channel switching becomes an important challenge. In this paper, we propose channel and time slot scheduling for minimal channel switching in MWSNs, while achieving efficient and collision-free transmission between nodes. The proposed scheme constructs a duty-cycled tree while reducing the amount of channel switching. As a next step, collision-free time slots are assigned to every node based on the minimal data collection delay. The experimental results demonstrate that the validity of our scheme reduces the amount of channel switching by 17.5%, reduces energy consumption for channel switching by 28%, and reduces the schedule length by 46%, as compared to the existing schemes.

KeywordsWireless sensor networks; Networking
Year2017
JournalSensors
PublisherMDPI
ISSN1424-8220
Digital Object Identifier (DOI)https://doi.org/10.3390/s17051030
Web address (URL)http://hdl.handle.net/10545/623730
hdl:10545/623730
Publication dates04 May 2017
Publication process dates
Deposited04 May 2019, 11:26
Accepted01 May 2017
ContributorsSungkyunkwan University
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