01116nas a2200145   4500000000100000000000100001008004100002260005000043100001800093700002200111700001400133245007500147300001400222520073400236       2015                            d  bSpringer International Publishing Switzerland1 aKonrad Połys1 aKrzysztof Grochla1 aPiotr Gaj00aMobility robustness in LTE based on automatic neighbor relation table.  a232–2413 aWe evaluate the effect of automatic updates to the LTE Neighbor Relation Table (NRT) to optimize the efficiency of handovers in the network. We propose an algorithm which monitors the handovers within the LTE network and detects events when the procedure was started to early (handover to early) or too late (handover too late). Basing on the observed statistics in Operation and Maintenance server (OAM) the proposed algorithm updates the NRT to maximize the network throughput and minimize the probability of loss of connectivity. Performed simulations show that correctly forbidden handovers can reduce number of unnecessary signaling, reduce risk of fail during handover and reduce the time required to perform the handovers.