A method for constructing a neighbor table, comprising: receiving, at a mobile base station (112, 400) which can be moved, a physical cell identifier, PCI, of a detected neighbor base station from a user equipment, UE, of a plurality of user equipments, UEs; receiving, at the mobile base station (112, 400), a global positioning system, GPS, position of the mobile base station from a GPS receiver of the mobile base station (112, 400); requesting, from the mobile base station (112, 400) via the UE, an evolved universal terrestrial radio access cell global identifier, ECGI, of the detected neighbor base station; receiving, at the mobile base station (112, 400) from the UE, the evolved universal terrestrial radio access cell global identifier, ECGI, of the detected neighbor base station; reporting (113, 115), to the coordinating node (103, 500) from the mobile base station (112, 400), the PCI of the detected neighbor base station, the GPS position of the mobile base station (112, 400) and the ECGI of the detected neighbor base station, for association, by the coordinating node (103, 500), of the GPS position of the mobile base station (112, 400) with the PCI and the ECGI of the detected neighbor base station in a neighbor table; receiving, at the mobile base station (112, 400) from the user equipment, UE, of the plurality of the UEs, a handover request with an ambiguous PCI; resolving, at the mobile base station (112, 400), the ambiguous PCI by retrieving, from the coordinating node (103, 500), at least one PCI and an ECGI matching the ambiguous PCI, and associating the retrieved at least one PCI and the ECGI with a current GPS position of the mobile base station (112, 400), wherein the neighbor table is an automatic neighbor relation, ANR, table, wherein the ANR table is constructed and stored at the coordinating node (103, 500) in an operator core network; sharing the ANR table with a plurality of eNodeBs in the network, and wherein the detected neighbor base station is an eNodeB. receiving, at a mobile base station (112, 400) which can be moved, a physical cell identifier, PCI, of a detected neighbor base station from a user equipment, UE, of a plurality of user equipments, UEs; receiving, at the mobile base station (112, 400), a global positioning system, GPS, position of the mobile base station from a GPS receiver of the mobile base station (112, 400); requesting, from the mobile base station (112, 400) via the UE, an evolved universal terrestrial radio access cell global identifier, ECGI, of the detected neighbor base station; receiving, at the mobile base station (112, 400) from the UE, the evolved universal terrestrial radio access cell global identifier, ECGI, of the detected neighbor base station; reporting (113, 115), to the coordinating node (103, 500) from the mobile base station (112, 400), the PCI of the detected neighbor base station, the GPS position of the mobile base station (112, 400) and the ECGI of the detected neighbor base station, for association, by the coordinating node (103, 500), of the GPS position of the mobile base station (112, 400) with the PCI and the ECGI of the detected neighbor base station in a neighbor table; receiving, at the mobile base station (112, 400) from the user equipment, UE, of the plurality of the UEs, a handover request with an ambiguous PCI; resolving, at the mobile base station (112, 400), the ambiguous PCI by retrieving, from the coordinating node (103, 500), at least one PCI and an ECGI matching the ambiguous PCI, and associating the retrieved at least one PCI and the ECGI with a current GPS position of the mobile base station (112, 400), wherein the neighbor table is an automatic neighbor relation, ANR, table, wherein the ANR table is constructed and stored at the coordinating node (103, 500) in an operator core network; sharing the ANR table with a plurality of eNodeBs in the network, and wherein the detected neighbor base station is an eNodeB.