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I'll Be a Bit Late -- Packet Reordering in Mobile Networks
Lennart Schulte,Alexander Zimmermann,Puneeth Nanjundaswamy,Lars Eggert,Jukka Manner 한국통신학회 2017 Journal of communications and networks Vol.19 No.6
Data transfer in mobile networks has increased significantlyover the past years, and the capacity of these networkshas grown accordingly. Due to their different set of characteristicscompared to wired networks, they have also received attentionfrom end-to-end developers on transport and application level. However, there exists no research on packet reordering in modernmobile networks, and how a transport layer should be designed tocope with it. In this paper we discuss how to measure packet reorderingin mobile networks with the help of transmission controlprotocol (TCP). Our analysis in Finnish mobile networks showsthat reordering characteristics depend heavily on the operator, butis present in all tested networks, and negatively impacts TCP whennot handled. We find that both number of reorderings in a connectionand the extent of the reordering is influenced by the sendingrate. Additionally, we present the framework for a reorderingprevention algorithm which takes into account the findings by automaticallyadapting to the current sending rate.