A Congestion Control Approach for Licklider Transmission Protocol

Delay Tolerant Networks (DTN) are designed to deal with the long delay of space network and frequent link interruption, in 2002. Licklider Transmission Protocol (LTP) was designed to replace the Internetworking Protocol (IP) and Transmission Control Protocol (TCP) in the DTN protocol stack. However, LTP has no congestion control mechanism. If a packet is dropped, the performance of the network will be worse. To deal with this problem, this paper proposes the Ecn-based TFRC Licker Transmission Protocol (ET-LTP) which extends the LTP data packet to record the network condition. The ET-LTP refers to congestion control approach applied on streaming media transmission on this question. A detailed control strategy is proposed in this paper as well. Finally, the simulations are built to test the performance of the ET-LTP. The results prove that the ET-LTP is more robust than LTP when facing the congestion.