Modeling and Detecting Failures in Next-generation Distributed Multimedia Applications

In this paper we investigate dependability issues of nextgeneration distributed multimedia applications. Examples of such applications are autonomous vehicle control, telemedicine, audio/video control, and Internet telephony. For these applications the quality of the delivered multimedia data is a critical factor. According to the ITU-T (working group SG 12), the quality of a multimedia service as perceived by end-users is defined by three parameters: delay, delay variation, and information loss. It is paramount to formalize the concept of a failure from the user’s perspective. This paper defines the correctness of a multimedia service as a function of temporal distributions of the user-related parameters. It proposes a strategy for modeling and detecting failures of the considered applications. In particular, the detection process is based on error filtering functions. We show that the combination of threshold-based mechanisms is quite suitable for implementing an efficient det...

• Type: Conference
• Year: 2003
• Where: SRDS
• Authors: Domenico Cotroneo, Cristiano di Flora, Generoso Paolillo, Stefano Russo
• Keywords: Autonomous Vehicle Control, Error filtering Functions, Multimedia Service, SRDS 2003