Escalonador de Pacotes para Transmissão por Multi-caminhos Não-Correlacionados em Redes Heterogêneas sem Fio

• Benevid Felix UFPR / UNEMAT
• Igor Steuck UFPR
• Aldri Santos
• Michele Nogueira UFPR

DOI: https://doi.org/10.5753/sbrc.2018.2451

Abstract

Academic and industrial efforts seek to improve the performance of heterogeneous wireless networks to provide the minimum requirements in terms of latency and throughput for delay-sensitive applications, such as online gaming, voice and video streams. Multipath Transmission Control Protocol (MPTCP) is designed to meet this demand. Currently, MPTCP provides a redundant scheduler that replicates data packets in multiple paths to mitigate heterogeneity negative effects. However, shared bottlenecks among multiple paths reduce the redundant scheduler benefits and restrain the MPTCP performance. Thus, this work presents RED (REdundant Diversity scheduling), a scheduler that prioritizes packet replication through uncorrelated paths. RED selects the paths and replicates packets based on the Spearman's correlation coefficient. Results show that RED reduces delay and increases the use of low correlated paths, significantly improving transmission performance.

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