naa a22 4500 510798691 CHVBK 20180411083346.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1187-8 doi (NATIONALLICENCE)springer-10.1007/s11277-013-1187-8 Mobility and Handover Management for Heterogeneous Networks in LTE-Advanced [Elektronische Daten] [Jaechan Lim, Daehyoung Hong] 3GPP Long Term Evolution-Advanced (LTE-A) aims at enhancement of LTE performance in many respects including the system capacity and network coverage. This enhancement can be accomplished by heterogeneous networks (HetNets) where additional micro-nodes that require lower transmission power are efficiently deployed. More careful management of mobility and handover (HO) might be required in HetNets compared to homogeneous networks where all nodes require the same transmission power. In this article, we provide a technical overview of mobility and HO management for HetNets in LTE-A. Moreover, we investigate the A3-event which requires a certain criterion to be met for HO. The criterion involves the reference symbol received power/quality of user equipment (UE), hysteresis margin, and a number of offset parameters based on proper HO timing, i.e., time-to-trigger (TTT). Optimum setting of these parameters are not trivial task, and has to be determined depending on UE speed, propagation environment, system load, deployed HetNets configuration, etc. Therefore, adaptive TTT values with given hysteresis margin for the lowest ping pong rate within 2% of radio link failure rate depending on UE speed and deployed HetNets configuration are investigated in this article. Springer Science+Business Media New York, 2013 Handover nationallicence Heterogeneous networks (HetNets) nationallicence Hysteresis margin nationallicence LTE nationallicence LTE-Advanced (LTE-A) nationallicence Time-to-trigger (TTT) nationallicence Lim Jaechan Department of Creative IT Engineering and Future IT Innovation Laboratory, POSTECH, Pohang, Korea aut Hong Daehyoung Department of Electronic Engineering, Sogang University, Seoul, Korea aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2901-2912 0929-6212 72:4<2901 2013 72 11277 https://doi.org/10.1007/s11277-013-1187-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1187-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lim Jaechan Department of Creative IT Engineering and Future IT Innovation Laboratory, POSTECH, Pohang, Korea aut NATIONALLICENCE 700 1- Hong Daehyoung Department of Electronic Engineering, Sogang University, Seoul, Korea aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2901-2912 0929-6212 72:4<2901 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer