TCP behaviour in LTE: impact of flow start-up and mobility

Eneko Atxutegi, Fidel Liberal, Karl-Johan Grinnemo, Anna Brunström, Åke Arvidsson, Rèmi Robert

    Research output: Contribution to conferencePaper

    15 Citations (Scopus)


    Mobile internet has been widely adopted and it is expected to rise to almost 4 billion users by 2020. Despite the research effort dedicated to the enhancement of its performance, there still exists a gap in the understanding of how TCP and its many variants work over LTE. To this end, this paper evaluates the extent to which five common TCP variants, CUBIC, NewReno,Westwood+, Illinois, and CAIA Delay Gradient (CDG), are able to utilise available radio resources under hard conditions, such as during start-up and in mobile scenarios at different speeds. The paper suggests that CUBIC, due to its Hybrid Slow-Start mechanism, enters congestion avoidance prematurely, and thus experiences a prolonged start-up phase. As a result, it is unable to efficiently utilise radio resources during shorter transmissionsessions. Besides, CUBIC, Illinois and NewReno, i.e., the loss-based TCP implementations, offer better throughput, and are able to better utilise available resources during mobility than Westwood+ and CDG - the delay-based variants do.

    Original languageEnglish
    Number of pages7
    Publication statusPublished - 2016
    Event9th IFIP Wireless and Mobile Networking Conference (WMNC), Colmar -
    Duration: 1980-Jan-01 → …


    Conference9th IFIP Wireless and Mobile Networking Conference (WMNC), Colmar
    Period80-01-01 → …

    Swedish Standard Keywords

    • Computer Systems (20206)


    • data models
    • delays
    • hybrid slow-start
    • lte
    • mobile communication
    • mobile computing
    • mobility
    • slow-start
    • tcp adaptability
    • throughput
    • wireless communication


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