Dynamic QoS management for multimedia real-time transmission in industrial environments

• Type: Article in International Conference Proceedings Book
• Date: 2007

Authors

Silvestre, J (Author) Other; Luis Almeida (Author) Other; Marau, R (Author) Other; Pedreiras, P (Author) Other

Conference proceedings International

Title: ETFA 2007: 12TH IEEE INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES AND FACTORY AUTOMATION, VOLS 1-3

Pages: 1473-+

12th IEEE International Conference on Emerging Technologies and Factory Automation

Patras, GREECE, SEP 25-28, 2007

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-007-MNN

DOI: 10.1109/efta.2007.4416963

Abstract (EN): The use of multimedia within industrial applications has become commonplace, targetting improved process monitoring and machine vision. In both cases, the multimedia information is commonly distributed and subject to time constraints that must be met across networks while avoiding untolerable interference over typical control flows. This can be achieved with Constant Bit-Rate (CBR) channels, typically supported by real-time protocols. However, the compressors used to reduce the amount of information to transfer generate Variable Bit-Rate (VBR) patterns. Adapting a VBR source to a CBR channel requires specific care in order to avoid wasting channel bandwidth or dropping video frames. This paper focuses on MJPEG transmission over Ethernet and proposes a bidimensional adaptation using the JPEG quantification factor q on the source side and frame acquisition/transmission period T on the source/network side respectively, using the FTT-SE protocol and its support for dynamic QoS management. The paper also shows several experiments with pre-recorded video streams that illustrate the advantages of the proposed approach.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2