Paper Info
Title
Satellite systems performance with TCP-IP applications
Abstract
Mobile access to the Internet is becoming extremely popular because users depend on the Internet for many activities in their daily routine. Satellites are well suited for mobile Internet applications because of their ability to enhance coverage and support long-range mobility. Satellites are an attractive alternative for mobile (pedestrian and, more importantly, vehicular) access to the Internet in sparsely populated areas where high bandwidth UMTS cells cannot be economically deployed or in regions where deployment of terrestrial facilities remains impractical. In this paper, we analyze various mobile Internet applications for both GEO and LEO satellite configurations (Iridium-like and Globalstar-like) using an enhanced version of 'ns2' (Network Simulator 2). As part of enhancing ns2, we developed a channel propagation model that includes shadowing from surrounding building skylines. The model incorporates actual data measurements collected in a built-up area. We compute via simulations the performance of FTP applications as perceived by mobile users traveling along "urban canyons" in LEO and GEO configurations. The results show that throughput and delay performance is strongly affected by skyline shadowing and that shadowing degradation can be compensated by satellite diversity, such as provided by Globalstar. For all the experiments, we compared the performance of different TCP schemes (Reno, SACK, Westwood).
Year
DOI
Venue
2001
10.1109/MILCOM.2001.985953
Military Communications Conference, 2001. MILCOM 2001. Communications for Network-Centric Operations: Creating the Information Force. IEEE
Keywords
Field
DocType
internet,mobile satellite communication,radiowave propagation,transport protocols,geo,globalstar-like system,iridium-like system,leo,network simulator 2,reno,sack,tcp schemes,westwood,building skylines,built-up area,channel propagation model,coverage,delay performance,long-range mobility,mobile internet,mobile access,ns2,shadowing,shadowing degradation,skyline shadowing,sparsely populated areas,throughput,urban canyons,tcpip,system performance,bandwidth,computational modeling,shadow mapping
Skyline,UMTS frequency bands,Computer science,Communication channel,Computer network,Internet protocol suite,Sack,Round-trip delay time,Throughput,The Internet
Conference
Volume
ISBN
Citations 
2
0-7803-7225-5
1
PageRank 
References 
Authors
0.41
4
7
Name
Order
Citations
PageRank
Pierpaolo Loreti19318.75
M. Luglio2353.26
R. Kapoor338636.70
J. Stepanek410.41
Mario Gerla5164652117.01
F. Vatalaro633839.60
Maria Angeles Vázquez-Castro724333.98