The effect of a new hybrid decision handover algorithm on QoS in two-tier LTE-A network

New sophisticated solutions are required in next generation networks to provide appropriate quality of service for users. The introduction of small cells in Long Term Evolution (LTE) raises numerous problems along with undoubted advantages to the engineers and researchers. In this paper a new handover decision algorithm is described for two-tier macrocell-small cell LTE-Advanced (LTE-A) using network map, i.e. positioning service and additional network provided information. The proposed algorithm processes information on the reported RSSI, the speed of users and the actual load of cells extended with a sliding averaging window on RSSI. Simulation results focus on QoS parameters and show that the new decision procedure ensures higher system throughput and lower delay than the legacy, strongest cell algorithm in most scenarios.