cs 19(16): e5

Research Article

Novel Schemes to prioritize the TCP ACK for throughput improvement in B4G and 5G networks

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  • @ARTICLE{10.4108/eai.5-11-2019.162595,
        author={Lakshmi Prasanna Jasti and Rohit Kumar and Tushar Vrind and Lalit Pathak},
        title={Novel Schemes to prioritize the TCP ACK for throughput improvement in B4G and 5G networks},
        journal={EAI Endorsed Transactions on Cloud Systems},
        volume={5},
        number={16},
        publisher={EAI},
        journal_a={CS},
        year={2019},
        month={11},
        keywords={NR, 5G, LTE, Cross Layer, TCP/IP, MAC, ACK, Deep Packet Inspection},
        doi={10.4108/eai.5-11-2019.162595}
    }
    
  • Lakshmi Prasanna Jasti
    Rohit Kumar
    Tushar Vrind
    Lalit Pathak
    Year: 2019
    Novel Schemes to prioritize the TCP ACK for throughput improvement in B4G and 5G networks
    CS
    EAI
    DOI: 10.4108/eai.5-11-2019.162595
Lakshmi Prasanna Jasti1,*, Rohit Kumar1, Tushar Vrind1, Lalit Pathak1
  • 1: Samsung Semiconductors India R&D Centre, Samsung Electronics, Bangalore, India
*Contact email: prasanna.j@samsung.com

Abstract

Evolution in cellular wireless communication and standardization has brought out technological advancements in physical and medium access (MAC) layer protocol to scale the data rate on the air interface like in Long Term Evolution (LTE) or New Radio (NR) 3GPP standards, by 10X to 100X compared to older technologies. At the same time there is not much thrust given on the interworking with TCP/IP, resulting in poor user experience, as a similar scale of improvement is not seen at application level, once the technologies are deployed in field. The problem related to delayed TCP acknowledgement (ACKs) acts as bottleneck at application level, which in turn results in low uplink (UL) or downlink (DL) Throughput (TP) at the User Equipment (UE). Solutions available in the literature to address the same increase either the processing complexity or wastage of resources, or both. In this paper, two novel solutions are presented to address prioritization of TCP ACKs by Sequence Number (SN) reservation and SN space management in simultaneous UL/DL traffic scenarios while maintaining low complexity. Through mathematical modelling and simulation in a standard setup for LTE network, we are able to achieve the effective decrease in downloading time by 5 ~ 25% in comparison to standard schemes. The solution is easy adoptable in NR based 5G network.