A method performed by a user equipment, UE,, in a wireless communication system, the method comprising: receiving an indication on measurements based on discovery reference signals from a network, wherein the indication informs that the network transmits the discovery reference signals in discovery signal occasions and does not transmit a legacy cell-specific reference signal, CRS, in other subframes than the discovery signal occasions; receiving information on a discovery signal measurement timing configuration, DMTC, and information on a discovery signal occasion duration from the network; receiving the discovery reference signals in the discovery signal occasions from the network, wherein: - the discovery signal occasions are inferred by the DMTC, the discovery signal occasion duration and a detecting secondary synchronization signal, SSS, subframe which is a subframe where an SSS is located, - the discovery signal occasion consists of consecutive downlink subframes and special subframes starting from the subframe where the SSS is located, - the DMTC indicates a periodicity of the discovery signal occasions, and - the discovery signal occasion duration is a number of the consecutive downlink subframes and special subframes; and performing the measurements on the discovery reference signals only in the discovery signal occasions, wherein the DMTC follows a timing of a primary cell, PCell, and wherein a measurement gap is smaller than the periodicity of the discovery signal occasions. receiving an indication on measurements based on discovery reference signals from a network, wherein the indication informs that the network transmits the discovery reference signals in discovery signal occasions and does not transmit a legacy cell-specific reference signal, CRS, in other subframes than the discovery signal occasions; receiving information on a discovery signal measurement timing configuration, DMTC, and information on a discovery signal occasion duration from the network; receiving the discovery reference signals in the discovery signal occasions from the network, wherein: - the discovery signal occasions are inferred by the DMTC, the discovery signal occasion duration and a detecting secondary synchronization signal, SSS, subframe which is a subframe where an SSS is located, - the discovery signal occasion consists of consecutive downlink subframes and special subframes starting from the subframe where the SSS is located, - the DMTC indicates a periodicity of the discovery signal occasions, and - the discovery signal occasion duration is a number of the consecutive downlink subframes and special subframes; and - the discovery signal occasions are inferred by the DMTC, the discovery signal occasion duration and a detecting secondary synchronization signal, SSS, subframe which is a subframe where an SSS is located, - the discovery signal occasion consists of consecutive downlink subframes and special subframes starting from the subframe where the SSS is located, - the DMTC indicates a periodicity of the discovery signal occasions, and - the discovery signal occasion duration is a number of the consecutive downlink subframes and special subframes; and performing the measurements on the discovery reference signals only in the discovery signal occasions, wherein the DMTC follows a timing of a primary cell, PCell, and wherein a measurement gap is smaller than the periodicity of the discovery signal occasions.