Browsing by Author "Christophorou, C."

Now showing items 1-20 of 20

    • Article  

      Adaptive network-aided session support in context-aware converged mobile networks 

      Antoniou, Josephina; Christophorou, C.; Simoes, J.; Pitsillides, Andreas (2012)
      The increase of networking complexity requires the design of new performance optimisation schemes for delivering sessions to users under different conditions. This paper addresses context-aware, adaptive multiparty sessions ...
    • Article  

      Analysis of elderly users’ preferences and expectations on service robot’s personality, appearance and interaction 

      Kleanthous, Styliani; Christophorou, C.; Tsiourti, C.; Dantas, C.; Wintjens, R.; Samaras, George S.; Christodoulou, Eleni (2016)
      Fortunately, improvements in welfare and medical care will allow life expectancy in Europe’s population to increase by the year 2050. However, it is not always the case that living longer implies a healthier, more active ...
    • Conference Object  

      CelEc framework for reconfigurable small cells as part of 5G ultra-dense networks 

      Christophorou, C.; Pitsillides, Andreas; Akyildiz, I. F. (Institute of Electrical and Electronics Engineers Inc., 2017)
      This paper proposes the Cella Ecosystem (CelEc) concept for emerging 5G ultra dense Networks, to evolve and supplement the Mobile Radio Network by using the crowd's User Equipments (UEs), densely distributed in our physical ...
    • Article  

      Context-aware self-optimization in multiparty converged mobile environments 

      Antoniou, Josephina; Christophorou, C.; Neto, A.; Sargento, S.; Cabral Pinto, F.; Carapeto, N. F.; Mota, T.; Simoes, J.; Pitsillides, Andreas (2010)
      The increase of networking complexity requires the design of new performance optimization schemes for delivering different types of sessions to users under different conditions. In this scope, special attention is given ...
    • Conference Object  

      An efficient handover algorithm for MBMS enabled 3G mobile cellular networks 

      Christophorou, C.; Pitsillides, Andreas (2006)
      With the introduction of Multimedia Broadcast Multicast Service (MBMS) in 3rd Generation (3G) Networks, the Radio Network Controller (RNC) for radio efficiency reasons can use either Dedicated or Common resources to ...
    • Conference Object  

      An enhanced approach for efficient MBMS handovers in 3G networks 

      Christophorou, C.; Pitsillides, Andreas (2008)
      With MBMS, a mobile Terminal (MT) that is on the move and receive an MBMS service may have to handover from a Common to a Dedicated Channel when crossing the cell's edge. In previous work, we highlighted the possible ...
    • Conference Object  

      An enhanced MBMS service provision approach for improved performance in UTRAN 

      Christophorou, C.; Pitsillides, Andreas (2011)
      As currently specified by 3GPP for UMTS, MBMS services are provided within a cell, either by P-t-P or by P-t-M transmission mode, but not both at the same time. Our previous work highlighted the inefficiencies that can ...
    • Conference Object  

      An enhanced radio resource allocation approach for efficient MBMS service provision in UTRAN 

      Christophorou, C.; Pitsillides, Andreas; Vassiliou, Vasos (2008)
      As currently specified by 3GPP, MBMS (Multimedia Broadcast Multicast Service) content can be provided in a cell by either Point-to-Point (P-t-P) or Point-to-Multipoint (P-t-M) transmission mode, but not both at the same ...
    • Article  

      Enhanced radio resource management algorithms for efficient MBMS service provision in UTRAN 

      Christophorou, C.; Pitsillides, Andreas; Lundborg, T. (2011)
      As currently specified by 3GPP, Multimedia Broadcast Multicast Service (MBMS) bearer services can be provided within a cell either by Point-to-Point (P-t-P) or Point-to-Multipoint (P-t-M) transmission mode, but not both ...
    • Conference Object  

      Handover control in MBMS enabled 3G mobile cellular networks 

      Christophorou, C.; Pitsillides, Andreas; Binucci, N. (2007)
      Handover Control in a cellular infrastructure aims to provide continuity of mobile services to a user traveling over cell boundaries. Using the existing Handover Control algorithm in 3rd Generation (3G) Mobile Cellular ...
    • Conference Object  

      ICT systems and services for Ageing Well: Identification and assessment of an important set (package) of ICT services for active ageing and independent living 

      Christophorou, C.; Georgiadis, Dimosthenis; Andreou, Panayiotis G.; Kleanthous, Styliani; Cereghetti, D. M.; Meijers, J.; Christodoulou, Eleni; Samaras, George S. (Springer Verlag, 2016)
      Currently, the main care model for supporting elderly people living alone at home is based on informal and formal caregivers assistance. Considering the demographic changes of older population, which increases rapidly, ...
    • Conference Object  

      MBMS Handover Control for efficient multicasting in IP-based 3G mobile networks 

      Christophorou, C.; Pitsillides, Andreas (2006)
      Handover Control in a cellular infrastructure aims to provide continuity of mobile services to a user traveling over cell boundaries. So far, Handover Control is considered only between cells supporting the service using ...
    • Article  

      MBMS Handover control: A new approach for efficient handover in MBMS enabled 3G cellular networks 

      Pitsillides, Andreas; Christophorou, C. (2007)
      With the introduction of Multimedia Broadcast Multicast Service (MBMS) system in 3rd Generation (3G) mobile cellular networks, the Radio Network Controller (RNC) for radio resource efficiency can use either Point-to-Point ...
    • Conference Object  

      A NEHO based MBMS handover control approach 

      Christophorou, C.; Pitsillides, Andreas (2008)
      Handover Control is one of the essential means to guarantee the continuity of mobile services to a user traveling in a cellular infrastructure, without interruption. In previous work we illustrated that using the current ...
    • Book Chapter  

      Network-aided session management for adaptive context-aware multiparty communications 

      Antoniou, Josephina; Christophorou, C.; Simoes, J.; Pitsillides, Andreas (IGI Global, 2011)
      Recent years, from about the early 2000s, have been characterized by global broadband penetration, Fixed-Mobile-Convergence, Triple Play, and content provisioning over All-IP multimedia networks. Increasing demands in ...
    • Conference Object  

      A new approach for efficient MBMS service provision in UTRAN 

      Christophorou, C.; Pitsillides, Andreas (2008)
      As currently specified by 3GPP, MBMS services can be provided in a cell either by Point-to-Point (PtP) or Point-to-Multipoint (PtM) transmission mode, but not both at the same time. With PtP transmission mode, one Dedicated ...
    • Conference Object  

      On the development strategy of an architecture for E-health service robots 

      Santos, L.; Dias, J.; Christophorou, C.; Christodoulou, Eleni; Samaras, George S. (IADIS, 2014)
      This paper presents a service robot architecture based on the principles of a Service-Oriented Architecture (SOA), whose modularity design maximizes the benefits of multidisciplinary contributions from researchers of ...
    • Conference Object  

      Power Counting for optimized capacity in MBMS enabled UTRAN 

      Panayides, Andreas S.; Christophorou, C.; Antoniou, Josephina; Pitsillides, Andreas; Vassiliou, Vasos (2008)
      MBMS bearer services can be provided in each cell by either Point-to-Point or Point-to-Multipoint transmission mode but for efficiency a decision has to be made between the two approaches. Initially, the fundamental criterion ...
    • Conference Object  

      A robotic cloud ecosystem for elderly care and ageing well: The GrowMeUp approach 

      Georgiadis, Dimosthenis; Christophorou, C.; Kleanthous, Styliani; Andreou, Panayiotis G.; Santos, L.; Christodoulou, Eleni; Samaras, George S. (Springer Verlag, 2016)
      Robotic systems in Ageing Well, like GrowMeUp, are among those assistive technologies, providing companionship and offering functionality related to the support of active and independent living, monitoring and maintaining ...
    • Conference Object  

      Towards a back-end framework for supporting affective avatar-based interaction systems 

      Andreou, Panayiotis G.; Georgiadis, Dimosthenis; Pamboris, Andreas; Christophorou, C.; Samaras, George S. (CEUR-WS, 2015)
      Avatar-based systems provide an intuitive way of interact-ing with users in the context of Ambient Abisted Living (AAL). These systems are typically supported by a diverse set of services for, e.g., social daily activities, ...