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Scalability analysis of reliable multicast protocol for a unidirectional satellite link

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dc.contributor.author Ngo Le Minh en_US
dc.date.accessioned 2015-01-12T10:40:24Z
dc.date.available 2015-01-12T10:40:24Z
dc.identifier.other AIT Thesis no.CS-05-22 en_US
dc.identifier.uri http://www.cs.ait.ac.th/xmlui/handle/123456789/319
dc.description Pathum Thani, Thailand : Asian Institute of Technology, 2005 en_US
dc.description 71 p. : ill. en_US
dc.description.abstract The developm ent of a category of app lications that sim u ltaneously connect different users scattered over different locations has fostered a new kind of transpo r t p r otocols : r e liable m u ltica s t pro t ocol. Satellite lin k s have bee n viewed as the potential m e dia f o r broadcas t and m u lticas t communication and ar e utilized to transm it applica tion data to m u ltiple use r s sim u ltaneously ove r ve ry la rge geographic a l area. Re liable Multic ast pro t ocol f o r Unidire c tiona l Sate llite link (RMUS) is a transport protocol which en sures re liable data tr ansm ission to m a ny users and is designed for ut ilizing unidire ction a l sa tellite links. Sca l ab ility of reliable m u lticas t pro t oc ol is one im portant criterion that needs to be studied to foresee the perform a nce of the protocol under the pressure of a large num b er of users. The thesis is aim e d at studying the scalab ility of RMUS. The protocol has been modeled using sim u lation and the perform a nce data is an alyzed to apprehend an insight of the RMUS protocol. S imula tion data shows that the im plosion phenom enon leads to the increase in the transm ission delay and the decline of throughput. Other perform a nce figures such as packet latenc y and overhead are also im pacted. The im pa ct of a large population of users on RMUS with various tim eout intervals is investigated where it was found that in or der to accommodate larger group s of receivers the tim e out setting sho u ld be enlarged. A m e thod to com pute the m i ni m u m backoff in terval that is used in setting RMUS tim eout is proposed. To keep the protocol intact the m e thod figures out the backoff interval for a multicas t n e twork including the s cenario s ch osen for running R M US. The injected flow of acknowledgem e nt packets through the Intern et is s i m u lated to investigate the im pact of backoff interva l and tr af f i c on the drop of ACK packets. The m i nimum bac koff is la rge bu t it s till nee d s to b e increase in the presence of traffic. The loss of ACK packets on the retu rn path to the server leads to the fa lse alarm of the congestio n on the satellite link. The adjustm e nt of backoff t o increas e ACK receiv e d by the server can le ad to m o re realistic feedback on the network condition.
dc.relation.ispartof Thesis no. CS-05-22 en_US
dc.relation.ispartof Asian Institute of Technology. Thesis no. CS-05-22 en_US
dc.subject Computer network protocols -- Simulation methods en_US
dc.title Scalability analysis of reliable multicast protocol for a unidirectional satellite link en_US
dc.type Thesis en_US

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