TCP Gateway for Satellite-based Internet Service Considering Accommodation of Multiple Customers (特集次世代移動通信ネットワークとその応用)

概要

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Satellite-based Internet is one of attractive solutions because it can be deployed even in inconvenient locations. However, it is a serious problem that TCP throughput can be degraded by the large propagation delay in the satellite link. We previously proposed to introduce an intermediate gateway only in the carrier side premises to accelerate TCP throughput and confirmed its effectiveness in case of no network congestion. On the other hand, in order to accommodate many customers, it is also required to avoid network congestion caused by the extremely asymmetry of the satellite access link. In this paper we describe the new TCP gateway taking account of multiple customers accommodated by a shared satellite access link. We also confirmed that the new gateway can accelerate TCP throughput avoiding network congestion, and that more than 8 times faster throughput is achieved comparing to the case without the gateway.
一般社団法人情報処理学会の論文
2002-12-15