Abstract
Many diverse high bandwidth consumers of different quality of service (QoS) requirements can currently be well supported by the last mile candidate—gigabit Ethernet passive optical network (GE-PON) system. Through modeling the performance of TCP over GE-PON in terms of fairness among multiple optical network units (ONUs) and multiple transmission protocols, the results indicate that TCP flows will suffer from restraining windows when competing with other TCP or other protocol flows, such as UDP protocol flows. Therefore, this paper proposes an adaptable approach to promote the throughput of restraining TCP flows to achieve TCP fairness. This paper focuses on the potential benefits of such a recovery modification process for TCP flows. TCP flows are always considered as the low -priority services and suffer from best-effort delivery. The comparison in both experiments and simulations shows that restraining window elastic recovery (RWER) can improve inter-protocol fairness and achieve the TCP throughput enhancement.
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