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Efthymios Koutsogiannis
Democritus University of Thrace
8Publications
4H-index
45Citations
Publications 8
Newest
#1Efthymios Koutsogiannis (DUTH: Democritus University of Thrace)H-Index: 4
#2Lefteris Mamatas (UoM: University of Macedonia)H-Index: 14
Last.Vassilios Tsaoussidis (DUTH: Democritus University of Thrace)H-Index: 20
view all 3 authors...
We study opportunistic forwarding in a community-based networking paradigm where mobile users and shared access points (SAPs) collectively provide Internet access to users (mobile or not), including those in areas where other connectivity options are not available. Our approach is based on an efficient interoperation of two challenging network types: the opportunistic and the user-provided networks (UPNs). This requires a re-evaluation of the existing assumptions regarding inter-contact patterns...
Source
Jun 15, 2011 in WWIC (Wired/Wireless Internet Communications)
#1Efthymios Koutsogiannis (DUTH: Democritus University of Thrace)H-Index: 4
#2Lefteris Mamatas (DUTH: Democritus University of Thrace)H-Index: 14
Last.Ioannis Psaras (UCL: University College London)H-Index: 20
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Due to existing networking paradigms and people communication habits, Internet is characterized by: (i) information that associates more and more with network edges, while corresponding traffic doesn't, (ii) a considerable amount of unexplored network resources that resides near mobile users, while their connectivity is usually poor and expensive in terms of financial cost and resource consumption. To address the above challenges, we introduce a cooperative networking scheme where Home Access Po...
12 CitationsSource
#1Efthymios Koutsogiannis (DUTH: Democritus University of Thrace)H-Index: 4
#2Fani Tsapeli (DUTH: Democritus University of Thrace)H-Index: 6
Last.Vassilios Tsaoussidis (DUTH: Democritus University of Thrace)H-Index: 20
view all 3 authors...
Delay Tolerant Networking (DTN) has been proposed as a global overlay architecture to provide network connectivity in challenged environments such as deep-space communications field. Bundle Protocol along with its convergence layer protocols transform end-to-end reliability into questionable hop-by-hop reliable communication and imposes a two-tier routing policy that allows flexible routes only within regions. In this paper we propose a Bundle layer end-to-end reliability mechanism (BLER) and ev...
6 CitationsSource
#2Alexey VinelH-Index: 31
view all 9 authors...
The proceedings contain 36 papers. The topics discussed include: evolutionary future Internet service platforms enabling seamless cross layer interoperability; taxonomical approach to the deploymen ...
Oct 1, 2009 in ICUMT (International Conference on Ultra Modern Telecommunications)
#1Efthymios Koutsogiannis (DUTH: Democritus University of Thrace)H-Index: 4
#2Sotirios Diamantopoulos (DUTH: Democritus University of Thrace)H-Index: 3
Last.Vassilios Tsaoussidis (DUTH: Democritus University of Thrace)H-Index: 20
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As the space communications infrastructure of the near future is yet to be standardized, many protocols have been proposed to cope with issues such as long propagation delays, high packet error rates and intermittent connectivity. In that context, we have designed a testbed, which incorporates Space conditions, mission scenarios and Space communication requirements, rendering the extensive evaluation and design of space protocols feasible and efficient.
1 CitationsSource
#1Efthymios Koutsogiannis (DUTH: Democritus University of Thrace)H-Index: 4
#2Giorgos Papastergiou (Hellenic Aerospace Industry)H-Index: 7
Last.Vassilios Tsaoussidis (DUTH: Democritus University of Thrace)H-Index: 20
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Space communications enter a new era where a multihop architecture is being exploited and an increasing number of alternative communication paths may be available. Current space applications, such as CFDP for file transfer, rely on static routing and can not efficiently perform in these challenging environments. The most promising solution is the emerging Delay Tolerant Networking (DTN) Architecture and the accompanying Bundle Protocol which allow for reliable store-and-forward message switching...
4 CitationsSource
#1Christos V. Samaras (DUTH: Democritus University of Thrace)H-Index: 4
#2Ioannis Komnios (DUTH: Democritus University of Thrace)H-Index: 6
Last.Nestor PecciaH-Index: 3
view all 7 authors...
As the number and complexity of space missions increases, space communications enter a new era, where internetworking gradually replaces or assists traditional telecommunication protocols. The Delay Tolerant Network (DTN) architecture has recently emerged as a communication system for challenged networks, originally designed for the Interplanetary Internet. In the context of our project with ESA called "Extending Internet into Space - ESA DTN Testbed Implementation and Evaluation" we intend to d...
11 CitationsSource
Last.Nestor PecciaH-Index: 3
view all 6 authors...
As the number of space elements increases, space communications enter a new era, where internetworking grad- ually replaces traditional telecommunication protocols. Delay Tolerant Networking (DTN) has emerged as the most prominent solution for such challenged networks; however, extensive testing and evaluation of all mechanisms is required prior to the wide deployment of DTN. In this paper, we present our experiences from architecting a state-of-the-art DTN testbed, capable of emulating future s...
11 Citations
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