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Education and Innovation in Embedded Systems Design

USI Università della Svizzera italiana, USI Faculty of Informatics, Advanced Learning and Research Institute USI Università della Svizzera italiana USI Faculty of Informatics USI Advanced Learning and Research Institute
TitleResponsiveness of Service Discovery in Wireless Mesh Networks
Publication TypeConference Paper
Year of Publication2014
AuthorsDittrich, A., D. Solis Herrera, P. Coto, and M. Malek
Conference Name20th Pacific Rim International Symposium on Dependable Computing (PRDC)
Date Published11/2014
PublisherIEEE Computer Society
Conference LocationSingapore
KeywordsExperiments, Responsiveness, Service Discovery, Wireless mesh networks, Zeroconf

Service Discovery (SD) is an integral part of service networks. Before a service can be used, it needs to be discovered successfully. Comprehensive service dependability analysis thus needs to include the SD process. As a time-critical operation, an important property of SD is responsiveness: The probability of successful discovery within a deadline, even in the presence of faults. This is especially true for dynamic networks with complex fault behavior such as wireless networks. This work evaluates the responsiveness of decentralized SD in wireless mesh networks. For this reason, the experiment framework ExCovery has been employed, which provides a unified description, execution, measurement and storage of experiments. ExCovery runs on the Distributed Embedded System (DES) wireless testbed at Freie Universit├Ąt Berlin. We present and discuss the results of the experiments and show how responsiveness is affected by the position and number of requester and providers as well as the load in the network. The results clearly demonstrate that in all but the most favorable conditions, the configurations of current SD protocols struggle to achieve a high responsiveness.