Harmonic DiffServ: provisioning scalable heterogeneous-QoS multicast in DiffServ networks
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Bit rate optimization with MMSE detector for multicast LP-OFDM systems
Journal of Electrical and Computer Engineering - Special issue on Resource Allocation in Communications and Computing
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Supporting heterogeneous receivers in a multicast group isof particular importance in large internetworks as, e.g., theInternet due to the large diversity of end-system and network access capabilities. Furthermore, it is the nature oflarge-scale internetworks which makes homogeneous Quality of Service (QoS) support unrealistic at least for the middle-term future. Therefore, we investigate in this paper theimplications of differing multicast models in heterogeneousQoS networks. In particular, we approach the problem anedge devices faces when mapping a heterogeneous QoSmulticast from an overlaid QoS system onto a system providing only a homogeneous QoS multicast. The generic solution technique we propose for this problem is calledforesting. The idea of foresting is to support a heterogeneous multicast by a forest of homogeneous multicast trees.We develop different foresting algorithms and comparethem by extensive simulations.