TY - GEN
T1 - Guard Time Optimisation for Energy Efficiency in IEEE 802.15.4-2015 TSCH Links
AU - Papadopoulos, Georgios
AU - Mavromatis, Alexandros
AU - Fafoutis, Xenofon
AU - Piechocki, Robert
AU - Tryfonas, Theo
AU - Oikonomou, George
PY - 2017/3/11
Y1 - 2017/3/11
N2 - Time Slotted Channel Hopping (TSCH) is among the Medium Access Control (MAC) schemes defined in the IEEE 802.15.4-2015 standard. TSCH aims to guarantee high-level network reliability by keeping nodes time-synchronised. In order to ensure successful communication between a sender and a receiver, the latter starts listening shortly before the expected time of a MAC layer frame’s arrival. The offset between the time a node starts listening and the estimated time of frame arrival is called guard time and it aims to reduce the probability of missed frames due to clock drift. In this paper, we investigate the impact of the guard time length on network performance. We identify that, when using the 6TiSCH minimal schedule, the most significant cause of energy consumption is idle listening during guard time. Therefore, we perform empirical optimisations on the guard time to maximise the energy-efficiency of a TSCH link. Our experiments, conducted using the Contiki OS, show that optimal guard time configuration can reduce energy consumption by up to 40%, without compromising network reliability.
AB - Time Slotted Channel Hopping (TSCH) is among the Medium Access Control (MAC) schemes defined in the IEEE 802.15.4-2015 standard. TSCH aims to guarantee high-level network reliability by keeping nodes time-synchronised. In order to ensure successful communication between a sender and a receiver, the latter starts listening shortly before the expected time of a MAC layer frame’s arrival. The offset between the time a node starts listening and the estimated time of frame arrival is called guard time and it aims to reduce the probability of missed frames due to clock drift. In this paper, we investigate the impact of the guard time length on network performance. We identify that, when using the 6TiSCH minimal schedule, the most significant cause of energy consumption is idle listening during guard time. Therefore, we perform empirical optimisations on the guard time to maximise the energy-efficiency of a TSCH link. Our experiments, conducted using the Contiki OS, show that optimal guard time configuration can reduce energy consumption by up to 40%, without compromising network reliability.
KW - Internet of Things
KW - IEEE 802.15.4-2015
KW - TSCH
KW - Synchronisation
KW - Guard Time
KW - Performance Evaluation
KW - Energy Consumption
U2 - 10.1007/978-3-319-52727-7_8
DO - 10.1007/978-3-319-52727-7_8
M3 - Conference Contribution (Conference Proceeding)
SN - 9783319527260
T3 - Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
SP - 56
EP - 63
BT - Interoperability, Safety and Security in IoT
PB - Springer
ER -