although the LEO constellation has dynamic satellite network topology, the topology changes are predictable and periodic. Based on the characteristics above, a new simple change adaptive routing algorithm (SCARA) is proposed for satellite IP networks. SCARA uses simple rules to decide the next hop. The rules are 1) using only two possible directions to reduce the routing path; 2) assigning high...

nowadays, new informational and communicative media, and the rate of their use by individuals have caused deep metamorphoses in the material and non-material dimensions of human lives, and individuals’ mental regulation. the use of these media, especially the internet and virtual social networks, among iranian teenagers has unnoticeably increased, and providing numerous facilities and options m...

Satellite networks could offer global communication without need of terrestrial infrastructure. Network coding could exploit the shared nature of wireless medium to improve network throughput. In this paper, we combine the satellite network routing algorithm with network coding, proposing a novel Network Coding based Multipath Opportunistic Routing Algorithm (NC-MORA) for Satellite Networks. Th...

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 ...