Currently, the demand to the capacity of mobile cellular deployments dictated by modern applications is rising rapidly. This especially holds true for cases where a small area contains great number of users simultaneously like stadium or festival venue. In some of these cases stationary base station can be replaced with timely-deployed UAVs. In this work we consider a scenario of data transmission between a user and UAV. During transmission UAV does not have any information on the user location but has information on its mobility model. Transmitted traffic has certain restrictions on SNR and the main objective is to lower the probability of breaching these restrictions. The current study is a proof of concept for the considered model, aimed to propose and verify the described approach through analysis of the derived results. © Springer Nature Switzerland AG 2020.