A method for estimating up-link latency, and/or down-link latency, and/or round-trip latency in a packet based wireless network for communication between two network nodes, wherein the method includes: a. measuring one or more metrics and/or using information from network procedures to estimate metrics, wherein the metrics have at least one or more of radio metrics available to a UE (User Equipment) or to a BS (Base Station) or similar access-point, b. measuring the metrics defined in a) either in a dedicated mode using packet sequence, and/or in a dedicated mode using available traffic, and/or in an idle mode, c. measuring the metrics defined in a) both on a serving and a non-serving cells, and/or beams, d. estimating up-link latency, and/or down-link latency, and/or round-trip latency by using multivariable, non-linear or linear function prediction, machine learning based prediction or mathematical or logical predictions based on the metrics defined in a).