Scheduling feedback for scalability and reliability in a streaming multicast protocol

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

Cano, J (Author) Other; Pereira, A (Author) Other; Oliveira, L (Author) Other; Luis Almeida (Author) FEUP

Conference proceedings International

Title: IEEE International Workshop on Factory Communication Systems - Proceedings, WFCS

Pages: 1-8

2015 11th IEEE World Conference on Factory Communication Systems, WFCS 2015

27 May 2015 through 29 May 2015

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00G-NZM

DOI: 10.1109/wfcs.2015.7160567

Abstract (EN): The number of mobile devices accessing the Internet is continuously increasing, creating new problems. For example, when many wireless clients try to access the same video stream in the same hot spot, multicast transmission must be used. However, multicast packets are unacknowledged and may present a high loss rate under adverse conditions which may jeopardize the quality of the streaming. In a severe scenario, packet losses may affect all video frames, preventing the clients from receiving the video stream at all. Therefore, we propose a novel reliable multicast protocol, tailored to streaming applications, that also scales to many clients under the same access point. It uses a feedback repeat request mechanism per client and such requests are adequately scheduled by the streaming server. This mechanism, which is the focus of this paper, also allows differentiating the quality of service provided to the clients, polling their feedback independently. We show experimental and simulation results that confirm the desired scalability and reliable streaming, with efficient bandwidth usage. The results also show a clear superiority in mitigating lost packets with respect to other approaches to the same problem, with benefits reaching and even going beyond one order of magnitude in packets recovery.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8