Title :
AdaptUbiFlow: Selection and Adaptation in Workflows for Ubiquitous Computing
Author :
Lopes, Frederico ; Pereira, Thiago ; Cavalcante, Everton ; Batista, Thais ; Delicato, Flavia C. ; Pires, Paulo F. ; Ferreira, Paulo
Author_Institution :
DIMAp, Fed. Univ. of Rio, Natal, Brazil
Abstract :
Ubiquitous environments still suffer from low availability given that any device may fail and it is hard to replace a failed element. In this paper we present AdaptUbiFlow (Adaptive Ubiquitous Workflow), an OpenCOPI´s element that aims to increase the availability of an ubiquitous system. When a device fails, AdaptUbiFlow supports the automatic reconfiguration of the system replacing the failed device (or service) by an equivalent one, this makes the system fault-tolerant without the need of any manual intervention. The replacing of a device/service is chosen taking into account not only the QoS and QoC (Quality of Context) provided but also the application´s execution flow to ensure that the best adaptation option will be chosen. AdaptUbiFlow evaluation showed encouraging results.
Keywords :
failure analysis; fault tolerance; quality of service; ubiquitous computing; workflow management software; AdaptUbiFlow; OpenCOPI element; QoC; QoS; automatic reconfiguration; fault-tolerant system; quality of context; ubiquitous computing; workflow adaptation; workflow selection; Availability; Context; Context modeling; Middleware; Quality of service; Semantics; Ubiquitous computing; Ubiquitous computing; adaptation; context provision middleware; platform integration; semantic workflows; service selection;
Conference_Titel :
Embedded and Ubiquitous Computing (EUC), 2011 IFIP 9th International Conference on
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-1822-9
DOI :
10.1109/EUC.2011.12
