Hybrid timeslot design for IEEE 802.15.4 TSCH to support heterogeneous WSNs

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Citations (Scopus)

Abstract

The IEEE 802.15.4 Time-Slotted Channel Hopping (TSCH) protocol defines two types of timeslots for communications, namely dedicated and shared timeslots. An upper layer in the protocol stack uses these timeslots to design a communication schedule for the network links, based on the required bandwidth for each link. Considering a network with time-varying data traffic generation by each node, the bandwidth requirements are changing over time for each link. This leads to poor efficiency of a predefined schedule when there is no data traffic for the dedicated timeslots, or there is too much data traffic injected to the shared timeslots. In this paper, we propose a new type of timeslot, called hybrid timeslot. A hybrid timeslot acts as a dedicated timeslot for a specific link, when there are packets available to be transmitted on that link. Otherwise, it acts as a shared timeslot that can be accessed by other links, using a contention-based mechanism. The hybrid timeslot has backward compatibility with the TSCH protocol and is functional with a few adaptations in the parameter setup of the TSCH protocol. Experimental and simulation results show that for heterogeneous networks using hybrid timeslots improves communication latency without reliability penalty.

Original languageEnglish
Title of host publicationIEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) (IEEE PIMRC 2018)
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages7
ISBN (Electronic)9781538660096
DOIs
Publication statusPublished - 10 Sep 2018
Event29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2018) - Bologna, Italy
Duration: 9 Sep 201812 Sep 2018

Conference

Conference29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2018)
Country/TerritoryItaly
CityBologna
Period9/09/1812/09/18

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