Evaluating LTP-T: A DTN-Friendly Transport Protocol

Abstract

The Licklider transmission protocol (LTP) is a delay-tolerant point-to-point protocol being developed by the Delay-Tolerant Networking Research Group (DTNRG). LTP-Transport is an extension to LTP that provides end-to-end services and which is designed to be a generic Delay-Tolerant Network (DTN) friendly transport protocol. We describe our network emulation based test setup for these protocols and our evaluation of their performance for a few simple DTN scenarios. In particular we compare LTP-T with the other protocol being developed by the DTNRG, the bundle protocol (BP). Our results show that LTP-T can outperform the BP in some cases, though, as an overlay network protocol, the BP is more flexible in general.