A method performed by a device in a Radio Access Network, for improving handover performance in a cellular wireless communication system, said cellular wireless communication system employing a handover procedure in which a handover preparation for a mobile station is initiated if a channel quality value between a source cell for said mobile station and said mobile station is less than a channel quality threshold value; said method comprising the step of: - tuning said channel quality threshold value based on one or more handover performance criteria used in said cellular wireless communication system, characterised in that said mobile station periodically transmits measurement reports including measurements on reference signals transmitted from one or more candidate target cells, said measurement reports being used for selecting a target cell; said method further comprising the step of: - tuning a periodicity for said periodically transmitted measurement reports based on said one or more handover performance criteria; wherein said channel quality value is a downlink SINR value SINR DL between said source cell and said mobile station, and said channel quality threshold value is a downlink SINR threshold value SINR Tr between said source cell and said mobile station or said channel quality value is an uplink SINR value SINR UL between said source cell and said mobile station, wherein said channel quality threshold value is increased if a handover failure rate HO Error between the source cell and the target cell is higher than a handover failure rate target HO Error _ Target times a first constant k 1 ; and, wherein said channel quality threshold value is decreased if the handover failure rate HO Error between the source cell and the target cell is less than the handover failure rate target HO Error _ Target times a second constant k 2 . - tuning said channel quality threshold value based on one or more handover performance criteria used in said cellular wireless communication system, characterised in that said mobile station periodically transmits measurement reports including measurements on reference signals transmitted from one or more candidate target cells, said measurement reports being used for selecting a target cell; said method further comprising the step of: - tuning a periodicity for said periodically transmitted measurement reports based on said one or more handover performance criteria; wherein said channel quality value is a downlink SINR value SINR DL between said source cell and said mobile station, and said channel quality threshold value is a downlink SINR threshold value SINR Tr between said source cell and said mobile station or said channel quality value is an uplink SINR value SINR UL between said source cell and said mobile station, wherein said channel quality threshold value is increased if a handover failure rate HO Error between the source cell and the target cell is higher than a handover failure rate target HO Error _ Target times a first constant k 1 ; and, wherein said channel quality threshold value is decreased if the handover failure rate HO Error between the source cell and the target cell is less than the handover failure rate target HO Error _ Target times a second constant k 2 . <EOS>