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F. Righetti, C. Vallati, S. K. Das, G. Anastasi, “An Experimental Evaluation of the 6Top Protocol for Industrial IoT Applications”, IEEE International Symposium on Computers and Communications (ISCC 2019),Barcellona,Spain, June 2–July 3, 2019.

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Abstract: The IETF is currently defining the 6TiSCH architecture for the Industrial Internet of Things to provide reliable and timely communication. 6TiSCH includes a distributed management mode, in which network resources are computed autonomously by nodes and allocated in a cooperative way. Specifically, nodes use the 6top protocol to negotiate network resources with their neighbors. In this paper, we investigate the performance of 6top protocol through a set of experimental measurements on a testbed. We show that the time required to complete a 6top transaction in a real environment is not negligible, as often assumed in many studies. In addition, a significant percentage of 6top transactions fails, with a negative impact the performance of the application. We investigate the reasons for such failures and propose some guidelines to reduce their number.

Keywords: Industrial Internet of Things; 6TiSCH; 6top; Scheduling Function; 802.15.4e TSCH.a

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