Compared to unicast traffic, multicast is not protected by any ARQ mechanism in 802.11 networks: collisions with other multicast and unicast transmissions are not detected and senders will not adapt to the contention situation by backing off. This results in an unreliable service for multicast transmissions. We propose early multicast collision detection (EMCD), an algorithm with the purpose of...

In this paper, we investigate two issues. First, what level of efficiency gain does multicast offer over unicast? Second, how does the shape of multicast trees impact multicast efficiency? We address the first issue by developing a metric to measure multicast efficiency for a number of real and synthetic datasets. We find that group sizes as small as 20 to 40 receivers offer a 60-70% reduction ...

Multicast with QoS guarantees is a bandwidth-efficient transmission scheme for the delivery of multi-user multimedia applications. Unlike most other related work, which focuses primarily on the algorithmic or protocol aspects of the multicast problem, our work focuses on the architecture and implementation aspects. In this paper, we present MRMA, a multicast resource management architecture des...

The tussle in IP multicast, where different enablers have interests that are adverse to each other, has led to a halt in inter-provider multicast deployment and created a situation in which enabling inter-domain multicast routing is considered a deterrent for network providers. This paper presents ODMT (On-demand Inter-domain Multicast Tunneling), an on-demand inter-provider multicast tunneling...

Core Based Trees (CBT) Multicast Routing Architecture Status of this Memo This memo defines an Experimental Protocol for the Internet community. This memo does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited. Abstract CBT is a multicast routing architecture that builds a single delivery tree per group...

proposed IP multicast for third generation Universal Mobile Telecommunication System (UMTS) Broadband wireless networks. In their proposed approach, multicast messages are sent as multiple unicast messages to all active multicast group members in the UMTS network. As a result their proposed scheme is inefficient in terms of internal infrastructure and radio resource usage; and multicast packets...

Multicast, or one-to-many, communication arises frequently in parallel computing and telecommunication applications. Multicast networks can simultaneously support multiple multicast connections between the network inputs and network outputs. However, due to the complex communication patterns and routing control in multicast networks, there is still a considerably large gap in network cost betwe...

Ever-increasingly attentions are drawn to the provision of multicast service over mobile IP networks. Multicast over mobile networks have to face against the scalability problem. In the paper, a new mobile multicast scheme, called mobile scalable recursive multicast is proposed. Our approach is based on the concept of dynamic ranching node-based multicast tree, where a pair of branching node me...

This paper presents a taxonomy of multicast protocols in distributed computing systems. It classi®es multicast protocols based on a four-dimensional model which is derived from the analysis of both application requirements and design goals of multicast mechanisms. The four dimensions are atomicity, ordering, real-time delivery and fault tolerance. Multicast protocols can be described by paramet...

Though the merits of IP-based multicast is undeniable, the deployment of IP multicast has met many difficulties. In the past several years, lots of research work have been done on overlay multicast (end-system multicast, application-layer multicast). In this paper, we propose a new overlay multicast protocol: HostCast. Besides constructing a data delivery tree, HostCast uses a simple and effici...