Accession Number:

ADA361633

Title:

Performance Analysis of TCP Enhancements in Satellite Data Networks

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Broyles, Ren H.

Report Date:

1999-03-01

Pagination or Media Count:

141.0

Abstract:

This research examines two proposed enhancements to the well-known Transport Control Protocol TCP in the presence of noisy communication links. The Multiple Pipes protocol is an application-level adaptation of the standard TCP protocol, where several TCP links cooperate to transfer data. The Space Communication Protocol Standard - Transport Protocol SCPS-TP modifies TCP to optimize performance in a satellite environment. While SCPS-TP has inherent advantages that allow it to deliver data more rapidly than Multiple Pipes, the protocol, when optimized for operation in a high-error environment, is not compatible with legacy TCP systems, and requires changes to the TCP specification. This investigation determines the level of improvement offered by SCPS-TPs Corruption Mode, which will help determine if migration to the protocol is appropriate in different environments. As the percentage of corrupted packets approaches 5 , Multiple Pipes can take over five times longer than SCPS-TP to deliver data. At high error rates, SCPS-TPs advantage is primarily caused by Multiple Pipes use of congestion control algorithms. The lack of congestion control, however, limits the systems in which SCPS-TP can be effectively used.

Descriptors:

• *SATELLITE NETWORKS
• *SPACE COMMUNICATIONS
• DATA TRANSMISSION SYSTEMS
• THESES
• COMMUNICATIONS NETWORKS
• CONGESTION

Subject Categories:

• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE