Essay On Multicasting

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Recommended: Implementation of multicast in network routing protocols

Multicast Tree Algorithm in ATM Network Environment

Overview:
The use of optical fiber has tremendously increased network bandwidth. The data used in video-on-demand (VOD), distant learning, distant diagnosis, video conferences, and many other applications have popped up one after another in recent years. They all require that the same data be sent to multiple recipients. This operation is called multicasting.

Introduction:
Asynchronous Transfer Mode (ATM) is the mostly implemented in high speed networks. ATM is the transmission system for CCITT's next-generation ISDN, Broadband ISDN (B-ISDN). B-ISDN is designed to provide subscriber communication services over a wide range of bit rates from megabits to several gigabits.
The primary goal in routing multicast connections is to make efficient use of the network resources and to establish fast connections for data transmission. The network is often defined by a graph G(V,E) . Multicast routing protocols are been used in practical systems such as multicast backbone(M bone).M bone chooses the shortest path to each destination using the IP routing mechanism.Multicast routing in ATM Switch performs two basic functions such as switch and queuing.

PROBLEM DESCRIPTION:
ATM NETWORK
ATM Network can be modeled by an connected graph G(V,E).The performance of the multicast routing in a system can be measured by following criteria.
Cost of establishing connection Ce: Total number of VPs connected from source to all destinations. The VC connection between the source and destination is either direct VP or the concatenation of multiple VPs. Ce is the cost of setting up connection for subsequent multicasting
Cost of bandwidth (Cb)and switching(Cs): Bandwidth cost ...

... middle of paper ...

...he relay
Nodes. The technique R-UP-MBS increases reliability without any delay and adds additional delay for
MBS synchronization. In other technique R-MP-MBS PER is improved and MBS synchronization is not
Possible in this technique this is the only disadvantage in this technique. Both these techniques attractively gives solution for next-generation relay based wireless network. By this multicasting broadband services the data can be transferred in the emergency situations this is an advanced version for transmitting the data at any emergency situations to longer distance.

WORK CITES:

1. K. D. Stephan, “We’ve Got to Talk: Emergency Communications and Engineering Ethics”
2. M. C. Valenti and N. Correal, “Exploiting Macrodiversity in Dense Multihop Networks and Relay”
3. http://proxy.ulib.csuohio.edu:2076/stamp/stamp.jsp?tp=&arnumber=4547521

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