A Transmission Control Protocol for Long Distance High-Speed Wireless Communications


IEICE TRANSACTIONS on Communications   Vol.E101-B   No.4   pp.1045-1054
Publication Date: 2018/04/01
Publicized: 2017/10/17
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2017EBP3229
Type of Manuscript: PAPER
Category: Network
TCP,  wireless,  free-space optical,  satellite,  

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This paper proposes a transmission control protocol (TCP) for long distance high-speed wireless communications, including free-space optical communications (FSOC). Extreme high frequency of wireless communications enables high-speed bit rate, but frequent signal error, including burst error, can be a quite severe problem for ordinary high-speed TCPs. To achieve 10Gbps or higher data transfer throughput on FSOC, the proposed TCP (designated “TCP-FSO”) has improved and new features including multi-layer congestion control, retransmission control with packet loss point estimation, delay-based ACK congestion control, and ACK retransmission control. We evaluated data transfer throughput of TCP-FSO and the other TCPs, by throughput model analysis and experiment on real implementation. Obtained results show that TCP-FSO achieves far higher data transfer throughput than other high-speed TCPs. For example, it achieved a thousand times higher throughput than the other high-speed TCPs in a real FSOC environment.