Our paper has been accepted to IEEE INFOCOM 2020

게시일: Dec 06, 2019 5:54:3 AM

Seungbeom Jeong's work titled "OST: On-Demand TSCH Scheduling with Traffic-awareness" with Hyung-sin Kim, Jeongyeup Paek, and Saewoong Bahk has been accepted to IEEE INFOCOM 2020.

Congratulations!

OST: On-Demand TSCH Scheduling with Traffic-awareness

Seungbeom Jeong, Hyung-sin Kim, Jeongyeup Paek, and Saewoong Bahk

Abstract

As the emerging Internet of Things (IoT) devices and applications flourish, demand for reliable and energy-efficient low-power wireless network protocols is surging. For this purpose, IEEE 802.15.4 standardized time-slotted channel hopping (TSCH), a promising and viable link-layer solution that has shown outstanding performance achieving over 99% reliability with low duty-cycles. However, it lacks one thing, flexibility. It is not adaptable to a wide variety of applications with varying traffic load and unpredictable routing topology due to its static timeslot scheduling. To this end, we propose OST, an On-demand Scheduling scheme for TSCH with traffic-awareness. In OST, each node dynamically self-adjusts the frequency of timeslots at run time according to time-varying traffic intensity. Moreover, it features on-demand resource allocation to handle bursty/queued packets in a timely manner. By doing so, OST aims to minimize its energy consumption while guaranteeing reliable packet delivery. We evaluate OST on a large-scale 72-node testbed, demonstrating that it achieves improvement of 60% in reliability and 52% in energy-efficiency compared to the state of the art.