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In this paper, the connectionless multicast routing MCOM (Multipoint relay Connectionless Multicast) is introduced for mobile Ad hoc networks. MCOM adapts over a wide ranges of density of group members. It appears as unicast with few receivers and as flooding protocol, similar to Simplified Multicast Forwarding (SMF), with many receivers. MCOM utilizes the forwarding structure Multipoint relay (MPR)...
Most multicast routing protocols construct reverse shortest path trees (SPTs) to deliver shared data. However, the use of the reverse SPT presents a challenge in the inter-domain routing environment, as the path from the source to a receiver could be asymmetric to the one used to go from the receiver to the source. A possible approach is to utilize the round-trip joining message but it incurs the...
Disruption Tolerant Networks (DTNs) are characterized by frequent network partitioning. This causes network connectivity to be opportunistic. In recent years, many collaborative applications have been envisioned for DTNs. These applications rely on the availability of reliable group communication protocols. To address this challenge in DTNs, we propose a scalable multicasting scheme that deterministically...
Researches on multicast has explored security challenges faced by group communications. Multicast transport protocols and multicast security protocols need to work closely to provide reliable and secure multicast services. However, there has been comparatively little work carried out to specify how exactly the two technologies can work together efficiently. In this paper, authors present an example...
Wireless Mesh Networks are a wireless multi-hop networks in which the nodes are characterized by theirs stability. In this sort of network the minimum cost tree connects sources and receivers by implying a minimum number of forwarding nodes. This paper introduces an adaptation to the popular multicast protocol ODMRP (On-Demand Multicast Routing Protocol) named OODMRP (Optimized On-Demand Multicast...
The congestion control scheme plays a critical role in the multicast communication. Without a proper congestion control mechanism, multicast protocols would cause unfairness while sharing network bandwidth with other flows. We propose a deliberated congestion control scheme to multicast multimedia contents for smart phones retrieving effectively. Our key idea is to detect the single trip time of packet...
In this paper we extend the analysis of by comparing delay in protocols using retransmission and packet encoding for bidirectional unicast communication over a satellite channel, where the signal propagation delay is significant. We derive results on the total sender-receiver delay based on analysis and computer simulation for a Bernoulli packet arrival distribution.
Mobile and wireless networks have developed significantly because of improved flexibility, reduced costs and adaptability to various technologies. In portable technologies, the main factor is node mobility, which causes frequent changes in network topology. Multicast routing protocols affects the performance of network topology. Routing paths in MANETs and WSNs potentially contain multi-hop communications...
A Mobile ad hoc network is a collection of wireless nodes that dynamically organize themselves to form a network without the need for any fixed infrastructure or centralized administration. The network topology dynamically changes frequently in an unpredictable manner since nodes are free to move. Support for multicasting is essential in such environment as it is considered to be an efficient way...
Quality of Service (QoS) is still one of the major challenges for emerging services based on the Real-Time Transport Protocol (RTP) to deliver multimedia content. In the context of the Internet Protocol Television (IPTV) services, the synchronization of multimedia components plays an important role. In order to synchronize audio and video components of multimedia content, RTP timestamps have to be...
With the ever increasing demand of multimedia traffic on the Internet, the interest in deploying multicast for distribution of these contents have increased. One hurdle however in this regard is quantifying the multicast protocol performance. Many efforts have been put into defining multicast metrics for evaluating protocol performance. In this paper we define a metric which will provide a reasonable...
PIM-SM (Protocol Independent Multicast - Sparse Mode) is a multicast routing protocol that uses one central node (which we refer to with the Rendezvous Point ??RP??) for all transmitters in a multicast group. It builds source-specific trees to the transmitters whose data rates exceed a predefined threshold. Investigations have been done to improve and provide an efficient mechanism for switching between...
Multicast services are used in emerging multimedia applications based on Quality of Service (QoS) development of multimedia group application and the construction of multicast routing tree is significant. Upper bound on the delay between sender and receiver is one of the common QoS constraints. Delay-constrained routing protocols are used to find paths subject to the delay constraint while efficiently...
With rapid growth of broadband network deployment and multimedia streaming development, IP multicast networks soon become a delivery mechanism for real-time broadcasting television content. Unlike analog television broadcasting, IPTV is to provide two-way interactive service for viewers to access the selected program channel with high quality multimedia presentation and fast channel surfing capability...
In Wireless Mesh Networks (WMNs), users can enjoy the real-time video streaming service anytime and anywhere through the service. Compared to the client/server model, the P2P (Peer-to-peer) approach is more suitable for video streaming applications because of its efficient usage of network resources. However, the multimedia applications are very sensitive to delay time and the performance of packets...
Delay/Disruption Tolerant Networks (DNTs) enables nodes to communicate by means of asynchronous sending messages without the need for an end-to-end path. In this paper, we study the problem of multicasting in DTNs. Several schemes have been proposed for multicast routing assuming the group of message receivers is known by sender, and the group members do not change during the process of message delivery...
Broadcasting is a common operation in on-demand multicast routing protocol to establish and refresh routing table. A straightforward broadcasting by flooding is usually very costly and will result in serious redundancy and contention. A conditioned broadcasting algorithm for on-demand multicast routing protocol is proposed, which computes the rebroadcast probability of packets through neighbor node...
There was a lot of interest in multicast communications within this decade as it is an essential part of many network applications, e.g. video-on-demand, etc. In this paper, we model flow rate allocation for application overlay as a utility based optimization problem constrained by capacity limitations of physical links and overlay constraints. The optimization flow control presented here addresses...
IP multicast plays a very important role in group communication. At the network level IP multicast provides an efficient one-to-many IP packets delivery but without providing any reliability guarantees. Desirable features of reliable multicast include low end-to-end delay, high throughput and scalability. Active networks open a new perspective in providing more efficient solutions to the problems...
We present in this paper a simulation-based comparison of one of the best known multicast congestion control schemes - TFMCC - against our proposed adaptive smooth multicast protocol (ASMP). ASMP consists of a single-rate multicast congestion control, which takes advantage of the RTCP sender (SR) and receiver reports (RR) in order to adjust the sender's transmission rate in respect of the network...
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