Journal ArticleDOI
Transport protocols for Internet-compatible satellite networks
Thomas Henderson,Randy H. Katz +1 more
Reads0
Chats0
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
Journal ArticleDOI
A multilayer IP security protocol for TCP performance enhancement in wireless networks
TL;DR: This paper analyzes the fundamental problem behind this conflict and develops a solution called multilayer IP-security (ML-IPsec), which allows wireless network operators or service providers to grant limited and controllable access to the TCP headers for performance enhancement purposes.
Journal ArticleDOI
Protocols for reliable data transport in space internet
TL;DR: A survey on the protocols proposed for reliable data transport in space Internet, with a focus on the latest developments, is presented, classification of these protocols into different approaches.
Book
Broadband satellite communications for Internet access
TL;DR: Broadband Satellite Communications for Internet Access is a systems engineering methodology for satellite communication networks that discusses the implementation of Internet applications that involve network design issues usually addressed in standard organizations.
Towards a common TCP evaluation suite
Lachlan L. H. Andrew,Cesar A. C. Marcondes,Sally Floyd,Lawrence Dunn,Romaric Guillier,Wang Gang,Lars Eggert,Sangtae Ha,Injong Rhee +8 more
TL;DR: An evaluation test suite is presented that allows researchers quickly and easily to evaluate their proposed TCP extensions in simulators and testbeds using a common set of well-defined, standard test cases, in order to compare and contrast proposals against standard TCP as well as other proposed modifications.
Proceedings ArticleDOI
Optimizing the end-to-end performance of reliable flows over wireless links
TL;DR: This work argues in favor of highly persistent error recovery and lossless handover schemes implemented at the link layer for reliable flows through an analysis of a large set of block erasure traces measured in different real-world radio environments.
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.