The Internet Engineering Task Force (IETF) is working on extending the traditional TCP/IP model for supporting multimedia and real-time applications on the Internet. Thus, new protocols have been developed such as the Resource Reservation Protocol (RSVP). At the same time, there has been a growing interest in using Low Earth Orbit (LEO) satellites. In the near future, when the Internet with mul...

This report presents a survey of the traffic management issues in the design and implementation of satellite-ATM networks. First a reference satellite-ATM network architecture is presented along with an overview of the service categories available in ATM networks. The error characteristics of satellite channels, techniques to improve the error characteristics, and the impact on ATM network perf...

VoIP PERFORMANCE IN NGEO SATELLITE IP NETWORKS WITH ON-BOARD PROCESSING CAPABILITY In this thesis study, an adaptive routing policy utilizing the real-time network information of a two-layered satellite network is introduced. In a satellite network, depending on the requirements and properties of services provided, various kinds of satellites from different orbits can be employed. Geostationary...

Abstract The standardization of a Return Channel via Satellite (DVB-RCS) and the satellite community efforts in term of interoperability over the last few years are expected to play, in a near future, a decisive role in Next Generation Networks (NGNs) through the integration of Satellite networks as an alternative to terrestrial networks like DSL (Digital Subscriber Line) in low terrestrial inf...

Routing algorithms and the hierarchical three-dimensional grid architecture of satellite-based networks (SN) are presented. The performance of the proposed architecture and the routing algorithms are analyzed. Simulation of the routing algorithm based on the extended OPNET platform is performed. It is shown in simulation that the proposed three-dimensional satellite-based network architecture o...

This document outlines possible TCP enhancements that may allow TCP to better utilize the available bandwidth provided by network containing satellite channels. The algorithms and mechanisms outlined have not been judged to be safe for the global Internet. However, the mechanisms may be appropriate for private satellite networks (or other long-delay network paths). The goal of this document is ...

The paper addresses the TCP performance enhancing proxy techniques broadly deployed in wireless networks. Drawing on available models for TCP latency, we describe an analytical model for the latency and the buffer requirements related to the split-TCP mechanism. Although the model applicability is broad, we present and evaluate the model in the context of geostationary satellite networks, where...

Purpose – The internet has been used to transport data in the form of packet. Multimedia applications including voice and video are being sent using the internet. In the past, the internet did not support any kind of sophisticated quality of service (QoS) mechanism. Although the type of service (ToS) field in the internet protocol (IP) header has been present and allowed the differentiated trea...

As the satellite technology will be one of the main components of the Next Generation Internet (NGI), a naturally occurring question concerns the feasibility of providing an efficient satellite-based Internet access. In this paper, we are interested in the problem of the planning of satellite-terrestrial hybrid networks for the multicast transfer. We first develop an architectural model for suc...