Slot Reallocation for Collision Avoidance in Autonomous TSCH Networks 


Vol. 44,  No. 11, pp. 2114-2122, Nov.  2019
10.7840/kics.2019.44.11.2114


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  Abstract

IEEE 802.15.4e TSCH(Time Slotted Channel Hopping) standard provides high reliability, deterministic delay, and efficient energy use by using channel hopping and TDMA. Research on scheduling method in TSCH has been proliferated since it is not explicitly specified in the standard. Orchestra[6] is an autonomous scheduling scheme that was proposed recently. Because it doesn’t require a negotiation process between nodes, there is less overhead due to the exchange of control messages. However, since a fixed slot is allocated for a node in a slotframe, its performance degrades severely with high traffic load. As a solution to this problem, e-TSCH-Orch temporarily assigns additional slots, but it doesn’t solve the problem with persistent high traffic load. Therefore, in this paper, we propose an algorithm for schedule update in autonomous scheduling to solve the Orchestra’s problem and improve e-TSCH-Orch’s performance. Using three performance indicators, we conduct performance comparisons with Orchestra and e-TSCH-Orch, which prove that the proposed algorithm improves latency and reliability compared to existing solutions.

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  Cite this article

[IEEE Style]

H. Park and J. Joung, "Slot Reallocation for Collision Avoidance in Autonomous TSCH Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 11, pp. 2114-2122, 2019. DOI: 10.7840/kics.2019.44.11.2114.

[ACM Style]

Hye-bin Park and Jinoo Joung. 2019. Slot Reallocation for Collision Avoidance in Autonomous TSCH Networks. The Journal of Korean Institute of Communications and Information Sciences, 44, 11, (2019), 2114-2122. DOI: 10.7840/kics.2019.44.11.2114.

[KICS Style]

Hye-bin Park and Jinoo Joung, "Slot Reallocation for Collision Avoidance in Autonomous TSCH Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 11, pp. 2114-2122, 11. 2019. (https://doi.org/10.7840/kics.2019.44.11.2114)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880