FTT-ethernet: A flexible real-time communication protocol that supports dynamic QoS management on ethernet-based systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Paulo Pedreiras (Autor) Outra; Paolo Gai (Autor) Outra; Luis Almeida (Autor) FEUP; Giorgio Buttazzo (Autor) Outra

Revista

Título: IEEE Transactions on Industrial Informatics

Vol. 1 Nº 3

Páginas: 162-172

ISSN: 1551-3203

Editora: IEEE

Indexação

ISI Web of Knowledge - 78 Citações

ISI Web of Science

Scopus - 111 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia de computadores

Outras Informações

ID Authenticus: P-000-23H

DOI: 10.1109/tii.2005.852068

Abstract (EN): Ethernet was not originally developed,to meet the requirements of real-time industrial automation systems and it was commonly considered unsuited for applications at the field level. Hence, several techniques were developed to make this protocol exhibit real-time behavior, some of them requiring specialized hardware, others providing soft-real-time guarantees only, or others achieving hard real-time guarantees with different levels of bandwidth efficiency. More recently, there has been an effort to support quality-of-service (QoS) negotiation and enforcement but there is not yet an Ethernet-based data link protocol capable of providing dynamic QoS management to further exploit the variable requirements of dynamic applications. This paper presents. the FTT-Ethernet protocol, which efficiently supports hard-real-time operation in a flexible way, seamlessly over shared or switched Ethernet. The FTT-Ethernet protocol employs an efficient master/multislave transmission control technique and combines online scheduling with online admission control, to guarantee continued real-time operation under dynamic communication requirements, together with data structures and mechanisms that are tailored to support dynamic QoS management. The paper includes a sample application, aiming at the management of video streams, which highlights the protocol's ability to support dynamic QoS management with real-time guarantees.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11