Now showing items 1-20 of 74

  • An 802.11k Compliant Framework for Cooperative Handoff in Wireless Networks 

    Athanasiou, G.; Korakis, T.; Tassiulas, L. (2009)
    In IEEE 802.11-based wireless networks, the stations (STAs) are associated with the available access points (APs) and communicate through them. In traditional hando. schemes, the STAs get information about the active APs ...
  • Auction-based scheduling of wireless testbed resources 

    Niavis, H.; Choumas, K.; Iosifidis, G.; Korakis, T.; Tassiulas, L. (2014)
    Experimentation in testbeds is gaining increasing ground as a necessary validation step for every theoretical study in communication networks. However, the first-come-first-served policy employed today by most testbeds ...
  • C2M: Mobile data offloading to mesh networks 

    Apostolaras, A.; Iosifidis, G.; Chounos, K.; Korakis, T.; Tassiulas, L. (2014)
    As the unprecedented growth of mobile data traffic places significant strain on cellular networks, alternative plans for exploiting already existing and under-utilized wireless infrastructure, become quite attractive. In ...
  • CDR-MAC: A protocol for full exploitation of directional antennas in ad hoc wireless networks 

    Korakis, T.; Jakllari, G.; Tassiulas, L. (2008)
    In this paper, we propose a new Medium Access Control (MAC) protocol for full exploitation of directional antennas in wireless networks. The protocol introduces a circular directional transmission of the Request To Send ...
  • A cloud-based content replication framework over multi-domain environments 

    Katsalis, K.; Sourlas, V.; Korakis, T.; Tassiulas, L. (2014)
    Cloud service provisioning on top of virtual infrastructures is of major importance in modern ICT, since it is directly correlated to the way business models are designed and revenue is generated from the cloud service ...
  • CONTENT project: Considerations towards a cloud-based internetworking paradigm 

    Katsalis, K.; Korakis, T.; Landi, G.; Bernini, G.; Rofoee, B. R.; Peng, S.; Anastasopoulos, M.; Tzanakaki, A.; Christofi, D.; Georgiades, M.; Larsen, R.; Riera, J. F.; Escalona, E.; Garcia-Espin, J. A. (2013)
    Although cloud computing and the Software Defined Network (SDN) framework are fundamentally changing the way we think about network services, multi-domain and multitechnology problems are not sufficiently investigated. ...
  • Contention and traffic load-aware association in IEEE 802.11 WLANs: Algorithms and implementation 

    Keranidis, S.; Korakis, T.; Koutsopoulos, I.; Tassiulas, L. (2011)
    Efficient association of a station with the appropriate access point has always been a challenging problem. The standard approach of considering only the Received Signal Strength, has recently been substituted by more ...
  • A converged network architecture for energy efficient mobile cloud computing 

    Tzanakaki, A.; Anastasopoulos, M. P.; Peng, S.; Rofoee, B.; Yan, Y.; Simeonidou, D.; Landi, G.; Bernini, G.; Ciulli, N.; Riera, J. F.; Escalona, E.; Garcia-Espin, J. A.; Katsalis, K.; Korakis, T. (2014)
    Mobile computation offloading has been identified as a key enabling technology to overcome the inherent processing power and storage constraints of mobile end devices. To satisfy the low-latency requirements of content-rich ...
  • Cooperation and directionality: A co-opdirectional MAC for wireless ad hoc networks 

    Tao, Z.; Korakis, T.; Slutskiy, Y.; Panwar, S.; Tassiulas, L. (2007)
    Advances in cooperative communications and directional antenna design so far have taken place in parallel, if not in isolation from each other. To explore the role they may play in the next generation of wireless networks, ...
  • Cooperation and directionality: Friends or foes? 

    Tao, Z.; Korakis, T.; Liu, F.; Panwar, S.; Zhang, J.; Tassiulas, L. (2008)
    As the two key technologies that have the potential to reshape the landscape of next-generation wireless network, cooperative communications and directional antenna system so far have been developed in parallel, if not in ...
  • Cooperative handoff in wireless networks 

    Athanasiou, G.; Korakis, T.; Tassiulas, L. (2008)
    In 802.11-based wireless networks the stations (STAs) are associated with the available access points (APs) and communicate through them. In traditional handoff schemes the STAs get information about the active APs in their ...
  • A Cross-Layer Framework for Association Control in Wireless Mesh Networks 

    Athanasiou, G.; Korakis, T.; Ercetin, O.; Tassiulas, L. (2009)
    The user association mechanism specified by the IEEE 802.11 standard does not consider the channel conditions and the AP load in the association process. Employing the mechanism in its plain form in wireless mesh networks, ...
  • Cross-testbed experimentation using the Planetlab-NITOS federation 

    Makris, N.; Keranidis, S.; Giatsios, D.; Korakis, T.; Koutsopoulos, I.; Tassiulas, L.; Rakotoarivelo, T.; Parmentelat, T. (2012)
    Federation of network testbeds has been identified as a key goal in the experimental testbeds community, leading to a recent activity burst in this research field. In this demo, we describe a federated experiment between ...
  • Demo: Enabling AGILE spectrum adaptation in commercial 802.11 WLAN deployments 

    Keranidis, S.; Chounos, K.; Korakis, T.; Koutsopoulos, I.; Tassiulas, L. (2014)
    In this work, we present the AGILE Spectrum Adaptation system that is able to dynamically tune the channel central frequency and bandwidth of wireless links in an adaptive to the interference and trafic conditions way. The ...
  • Demo: Online energy consumption monitoring of wireless testbed infrastructure through the NITOS EMF framework 

    Keranidis, S.; Kazdaridis, G.; Passas, V.; Korakis, T.; Koutsopoulos, I.; Tassiulas, L. (2013)
    Development of energy-efficient protocols and algorithms requires in-depth understanding of the power consumption characteristics of real world devices. To this aim, energy efficiency analysis is performed by the research ...
  • A demonstration of a management tool for assessing channel quality information in wireless testbeds 

    Apostolaras, A.; Miliotis, V.; Giallelis, N.; Syrivelis, D.; Korakis, T.; Tassiulas, L. (2011)
    The gradually growing need for testbed use so as networking algorithms to be validated in real environment, has given rise to optimal utilization of testbed resources. Towards this direction, we present a new management ...
  • A demonstration of a relaying selection scheme for maximizing a diamond network's throughput 

    Apostolaras, A.; Choumas, K.; Syrigos, I.; Kazdaridis, G.; Korakis, T.; Koutsopoulos, I.; Argyriou, A.; Tassiulas, L. (2012)
    We demonstrate a queue-aware algorithm studied in a diamond network topology. This algorithm's decisions are obtained from an analytical optimization framework relying on our technical work [4] and we devise an implementation ...
  • Demonstration of a Vehicle-to-Infrastructure (V2I) communication network featuring heterogeneous sensors and delay tolerant network capabilities 

    Stavropoulos, D.; Kazdaridis, G.; Korakis, T.; Katsaros, D.; Tassiulas, L. (2012)
    The development of applications based over vehicular networks, such as road safety, environmental information etc. require a complete testbed platform for research and evaluation. Such a platform will be provided by NITOS[1] ...
  • Demonstration of a video-aware multicast opportunistic routing protocol over 802.11 two-hop mesh networks 

    Syrigos, I.; Choumas, K.; Korakis, T.; Tassiulas, L. (2014)
    In this demo paper, we demonstrate and evaluate a novel Opportunistic Routing (OR) protocol for video multicast, namely Video-aware Multicast Opportunistic Routing (ViMOR), over 802.11 two-hop mesh networks. OR exploits ...
  • A demonstration of multirate multicast over an 802.11 mesh network 

    Paschos, G. S.; Li, C. P.; Modiano, E.; Choumas, K.; Korakis, T. (2014)
    This demo presents a novel multirate multicast scheme for video delivery to wireless users. We demonstrate an adaptive scheme that combines differential backlog scheduling and intelligent packet dropping, both based on ...