Journal ArticleDOI
Transport protocols for Internet-compatible satellite networks
Thomas Henderson,Randy H. Katz +1 more
TLDR
This work addresses the question of how well end-to-end transport connections perform in a satellite environment composed of one or more satellites in geostationary orbit (GEO) or low-altitude Earth orbit (LEO), in which the connection may traverse a portion of the wired Internet.Abstract:
We address the question of how well end-to-end transport connections perform in a satellite environment composed of one or more satellites in geostationary orbit (GEO) or low-altitude Earth orbit (LEO), in which the connection may traverse a portion of the wired Internet. We first summarize the various ways in which latency and asymmetry can impair the performance of the Internet's transmission control protocol (TCP), and discuss extensions to standard TCP that alleviate some of these performance problems. Through analysis, simulation, and experiments, we quantify the performance of state-of-the-art TCP implementations in a satellite environment. A key part of the experimental method is the use of traffic models empirically derived from Internet traffic traces. We identify those TCP implementations that can be expected to perform reasonably well, and those that can suffer serious performance degradation. An important result is that, even with the best satellite-optimized TCP implementations, moderate levels of congestion in the wide-area Internet can seriously degrade performance for satellite connections. For scenarios in which TCP performance is poor, we investigate the potential improvement of using a satellite gateway, proxy, or Web cache to "split" transport connections in a manner transparent to end users. Finally, we describe a new transport protocol for use internally within a satellite network or as part of a split connection. This protocol, which we call the satellite transport protocol (STP), is optimized for challenging network impairments such as high latency, asymmetry, and high error rates. Among its chief benefits are up to an order of magnitude reduction in the bandwidth used in the reverse path, as compared to standard TCP, when conducting large file transfers. This is a particularly important attribute for the kind of asymmetric connectivity likely to dominate satellite-based Internet access.read more
Citations
More filters
Book ChapterDOI
Robust TCP (TCP-R) with explicit packet drop notification (EPDN) for satellite networks
TL;DR: This work proposes a solution that could significantly improve the performance of the network when reordering of packets occurs in the satellite network, based on enabling the senders to distinguish between dropped packets and reordered packets.
Proceedings ArticleDOI
Transport Protocols in the Tactical Network Environment
TL;DR: Architecture Technology Corporation has analyzed the tactical network environment and has examined the behavior of various reliable transport protocols within such environments to dramatically improve reliable-transport performance.
Proceedings ArticleDOI
Comprehensive Computational Analysis on TCP in Satellite Links
Zhenyong Wang,Qing Guo,Xuemai Gu +2 more
TL;DR: Based on the method, throughputs of TCP Reno and TCP NewReno in long propagation delay satellite links are achieved, which shows adaptability of different TCP protocols in satellite networks.
Patent
Device for creating a wireless mobile internet connection
TL;DR: In this article, the authors proposed the implementation of this interface using satellite terminals, where mobile subscribers access the Internet via a connection from the satellite terminal to the satellite and then from the latter to the Internet.
Proceedings ArticleDOI
Applying Neural Network to Improve TCP Performance over Distributed Spaceflight TT&C Networks
TL;DR: A backpropagation neural network classifier is presented, which can classify packet loss cause over TT&C (tracking, telemetry, and command) networks and shows that the TCP-BP algorithm is superior to Vegas and Reno algorithm.
References
More filters
Journal ArticleDOI
Random early detection gateways for congestion avoidance
Sally Floyd,Van Jacobson +1 more
TL;DR: Red gateways are designed to accompany a transport-layer congestion control protocol such as TCP and have no bias against bursty traffic and avoids the global synchronization of many connections decreasing their window at the same time.
Journal ArticleDOI
Congestion avoidance and control
TL;DR: The measurements and the reports of beta testers suggest that the final product is fairly good at dealing with congested conditions on the Internet, and an algorithm recently developed by Phil Karn of Bell Communications Research is described in a soon-to-be-published RFC.
Proceedings Article
Hypertext Transfer Protocol -- HTTP/1.1
Roy T. Fielding,James Gettys,Jeffrey C. Mogul,H. Frystyk,Larry Masinter,Paul J. Leach,Tim Berners-Lee +6 more
TL;DR: The Hypertext Transfer Protocol is an application-level protocol for distributed, collaborative, hypermedia information systems, which can be used for many tasks beyond its use for hypertext through extension of its request methods, error codes and headers.
Journal ArticleDOI
Fair end-to-end window-based congestion control
Jeonghoon Mo,Jean Walrand +1 more
TL;DR: The existence of fair end-to-end window-based congestion control protocols for packet-switched networks with first come-first served routers is demonstrated using a Lyapunov function.