Cross-layer reliability management for multicast over satellite

Authors:
F. Arnal;L. Dairaine;J. Lacan;G. Maral
Affiliations:
Laboratoire TéSA, 2, rue Charles Camichel, BP 7122, 31071 Toulouse Cedex 7, France and Alcatel Space Industries, 26, avenue J.F. Champollion, BP 1187, 31037 Toulouse Cedex, France;Laboratoire TéSA, 2, rue Charles Camichel, BP 7122, 31071 Toulouse Cedex 7, France and ENSICA, 1, place ímile Blouin, 31056 Toulouse Cedex 5, France and ENST - Site de Toulouse, 10, aven ...;Laboratoire TéSA, 2, rue Charles Camichel, BP 7122, 31071 Toulouse Cedex 7, France and ENSICA, 1, place ímile Blouin, 31056 Toulouse Cedex 5, France;Laboratoire TéSA, 2, rue Charles Camichel, BP 7122, 31071 Toulouse Cedex 7, France and LAAS-CNRS, 7, avenue du Colonel Roche, 31077 Toulouse Cedex 4, France
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking
Year:
2005

Citing 5
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Abstract

Multicast services are well supported by geostationary satellites as a result of their broadcasting capability over large coverage areas. However, in this context the reliability management must be accurately analysed, since satellite resources are expensive and link quality degrades significantly during adverse weather conditions. In this paper, we show that the conventional layered approach of reliability management can be adapted and optimized for multicast over satellite. Our proposal consists in removing, at low layers, most of packet discardings, and introduces the MPHP mechanism which protects protocol headers. At transport level, for full reliability, we adapt conventional erasure decoding used with packet-level FEC and on this basis we propose a hybrid-ARQ protocol with a specific error and erasure decoding. The performance analysis shows that applications like real-time multimedia delivery using UDP-lite for partial reliability can benefit from a reduced error rate, and applications like massive file transfers requiring full reliability are less demanding in terms of network resources.