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, ...