Method and apparatus for enhancing network positioning measurement performance, wherein uplink measurement is a measurement performed on radio signals configured for a wireless device by a first network node, and wherein the first network node is different from a measuring node. Information is obtained about a plurality of measurement occasions in which the wireless device is scheduled to transmit one or more configured radio signals, wherein a measurement occasion comprises one or more time and/or frequency resources. Information is also obtained about uncertain measurement occasions, wherein an uncertain measurement occasion comprises one of the plurality of measurement occasions in which the wireless device may or may not transmit the one or more configured radio signals. A radio signal measurement is selectively performed based on the obtained information and the radio signals received from the wireless device, and is used for determining positioning of the wireless device.