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Multicast Protocols (multicast + protocol)

Distribution by Scientific Domains
Engineering100%

Selected Abstracts

Reliable and efficient multicast protocol for mobile IP networks

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS, Issue 7 2008
Sang-Jo Yoo
Abstract To provide a multicasting service, several multicast protocols for mobile hosts (MHs) have been proposed. However, all of these protocols have faults, such as non-optimal delivery routes and data loss when hosts move to another network, resulting in insecure multicast data transmissions. Thus, this paper presents a new reliable and efficient multicast routing protocol for mobile IP networks. The proposed protocol provides a reliable multicast transmission by compensating the data loss from the previous mobile agent when a MH moves to another network. In addition, an additional function allows for direct connection to the multicast tree according to the status of agents, thereby providing a more efficient and optimal multicast path. The performance of the proposed protocol is confirmed based on simulations under various conditions. Copyright © 2008 John Wiley & Sons, Ltd. [source]

Enabling scalable multicast protocols using dynamic overlap tree path

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS, Issue 4 2001
Sheng Xu
Abstract The scalability of a multicast protocol is a very critical issue when it is implemented on a global scale. The number of forwarding states that are maintained at each multicast router explodes when the number of multicast groups grows exponentially as in the case of global Internet. In this paper we describe a technique, called dynamic overlap tree path (DOTP), to reduce the forwarding states that need to be maintained in multicast routers and hence improve the scalability of existing multicast protocols. This technique, which can be incorporated in both the dense and sparse modes of multicast protocols, dynamically finds overlapped unbranched tree paths and merges their corresponding forwarding states to reduce the storage requirement in multicast routers. It does not introduce any additional control-message overheads through the reduction process. OPNET simulation results show that the overall average forwarding-state table size of the simulated networks can be reduced by about 30 per cent on the average. Copyright © 2001 John Wiley & Sons, Ltd. [source]

Reliable and efficient multicast protocol for mobile IP networks

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS, Issue 7 2008
Sang-Jo Yoo
Abstract To provide a multicasting service, several multicast protocols for mobile hosts (MHs) have been proposed. However, all of these protocols have faults, such as non-optimal delivery routes and data loss when hosts move to another network, resulting in insecure multicast data transmissions. Thus, this paper presents a new reliable and efficient multicast routing protocol for mobile IP networks. The proposed protocol provides a reliable multicast transmission by compensating the data loss from the previous mobile agent when a MH moves to another network. In addition, an additional function allows for direct connection to the multicast tree according to the status of agents, thereby providing a more efficient and optimal multicast path. The performance of the proposed protocol is confirmed based on simulations under various conditions. Copyright © 2008 John Wiley & Sons, Ltd. [source]

Enabling scalable multicast protocols using dynamic overlap tree path

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS, Issue 4 2001
Sheng Xu
Abstract The scalability of a multicast protocol is a very critical issue when it is implemented on a global scale. The number of forwarding states that are maintained at each multicast router explodes when the number of multicast groups grows exponentially as in the case of global Internet. In this paper we describe a technique, called dynamic overlap tree path (DOTP), to reduce the forwarding states that need to be maintained in multicast routers and hence improve the scalability of existing multicast protocols. This technique, which can be incorporated in both the dense and sparse modes of multicast protocols, dynamically finds overlapped unbranched tree paths and merges their corresponding forwarding states to reduce the storage requirement in multicast routers. It does not introduce any additional control-message overheads through the reduction process. OPNET simulation results show that the overall average forwarding-state table size of the simulated networks can be reduced by about 30 per cent on the average. Copyright © 2001 John Wiley & Sons, Ltd. [source]

Transport protocols in multicast via satellite

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, Issue 6 2004
Gun Akkor
Abstract In a wide variety of broadband applications, there is a need to distribute information to a potentially large number of receiver sites that are widely dispersed from each other. Communication satellites are a natural technology option and are extremely well suited for carrying such services because of the inherent broadcast capability of the satellite channel. Despite the potential of satellite multicast, there exists little support for multicast services over satellite networks. Although several multicast protocols have been proposed for use over the Internet, they are not optimized for satellite networks. One of the key multicast components that is affected when satellite networks are involved in the communication is the transport layer. In this paper, we attempt to provide an overview of the design space and the ways in which the network deployment and application requirements affect the solution space for transport layer schemes in a satellite environment. We also highlight some of the issues that are critical in the development of next generation satellite multicast services. Copyright © 2004 John Wiley & Sons, Ltd. [source]

Reliable multicast via satellite: a comparison survey and taxonomy

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, Issue 1 2001
Martin W. Koyabe
Abstract IP multicasting is an important service, which will be provided by the next generation Internet. A range of applications has emerged which take the advantage of multicast delivery. However, several factors currently hinder large-scale deployment of terrestrial multicast services. It is particularly difficult to support delivery to large groups of users. Satellites offer a natural way to extend the multicast service to reach this large number of users. They may offer high capacity (especially when using next generation satellite systems) and also eliminate the need for a large number of intermediate routing hops. There are important differences in the way multicast applications operate over satellite. This paper therefore reviews the key design paradigm and offers a critical comparison between different reliable multicast protocol techniques based on a taxonomy. The suitability of a set of the most common reliable multicast protocols is assessed within a satellite environment and conclusions are presented. Copyright © 2001 John Wiley & Sons, Ltd. [source]