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Performance Evaluation of PEP Based on Cross-Layer in Satellite Communication System
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 Title & Authors
Performance Evaluation of PEP Based on Cross-Layer in Satellite Communication System
Kim, Jong-Mu; Nathnael, Gebregziabher W.; Lee, Kyu-Hyan; Kim, Jae-Hyun;
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Satellite communication is a wide area network (WAN) which provides communication service worldwide. However, the performance of TCP can be seriously degraded in the satellite networks due to limited bandwidth, long round-trip time (RTT) and high bit error rate (BER) over satellite links. In order to improve the performance of TCP, this paper proposes cross-layer Performance Enhancing Proxy (PEP) in digital video broadcasting-return channel via satellite (DVB-RCS) networks. The proposed protocol sets TCP Congestion Window (CWND) size by using satellite resource allocation information exchanged between TCP and the link-layer. we implement PEP testbed based on Linux to evaluate the performance of the proposed protocol. The simulation results show that the proposed protocol performs better than standard TCP both in single and multiple sessions in variant BER, because the proposed protocol sets TCP CWND size by using satellite resource allocation.
PEP;Cross-layer;Congestion Window;TCP splitting;DVB-RCS;BER;
 Cited by
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