eng URI http://hdl.handle.net/10795/3321 τηλεπικοινωνία αμφίδρομο δίκτυο ασύρματη τηλεπικοινωνία σύστημα επικοινωνίας The nowadays heterogeneous wireless network (HWN) is a collection of ubiquitous wireless networking elements (WNEs) that support diverse functional capabilities and networking purposes. In such a heterogeneous networking environment, localization and mobility management will play a key role for the seamless support of emerging applications, such as social networking, massive multiplayer online gaming, device-todevice (D2D) communications, smart metering, first-responder communications, and unsupervised navigation of communication-aware robotic nodes. Since most of the existing wireless networking technologies enable the WNEs to assess their current radio status and directly (or indirectly) estimate their relative distance and angle with respect to other WNEs of the same Radio Access Technology (RAT), the integration of such information from the ubiquitous WNEs arises as a natural solution for robustly handling localization between (not necessarily homogeneous) WNEs and mobility management of moving WNEs governed by resource-constrained operation. Under the viewpoint of investigating how the utilization of such spatial information can be used to enhance the performance of localization and mobility management in the nowadays HWN, in this work we focus and contribute in the following four research areas: i) localization and peer-discovery between non-homogeneous WNEs, ii) network-assisted D2D discovery in cellular networks, iii) energy-efficient handover (HO) decision in the macrocell – femtocell network, and iv) network-assisted vertical handover decision (VHO) for the integrated cellular and WLAN heterogeneous wireless network. 224 pp. LOMv1.0 creator LOMv1.0educational validator LOMv1.0 Scientific Coordinator LOMv1.0 Project Executing Organisation 2014-07 Digital Library of the Operational Programme "Education and Lifelong Learning" abstract types Text Localization Peer-to-peer discovery Handover Vertical Handover Heterogeneous Wireless Networks Network-assistance Device-to-Device Discovery Femtocells Wireless Local Area Networks Υπολογισμός σχετικής θέσης Αναζήτηση δικτύου Οριζόντια μεταπομπή Κάθετη μεταπομπή Ετερογενή ασύρματα δίκτυα Υποβοήθηση από το δίκτυο Επικοινωνίες συσκευής-με-συσκευή Φεμτοκυψέλες Δίκτυα ασύρματης τοπικής πρόσβασης 7242258 application/pdf http://repository.edulll.gr/edulll/bitstream/10795/3321/2/3321_1.15_%ce%94%ce%94_31_7_14.pdf Περιλαμβάνεται ελληνική περίληψη URI http://hdl.handle.net/10795/3321 LOMv1.0creator 2016-05-23T08:50:33Z LOMv1.0validator 2016-05-23T08:50:33Z LOMv1.0 gre no no Copyright EYD-EPEDBM (Operational Programme "Education and Lifelong Learning")