Radio base station, radio network node and methods therein for detecting a faulty antenna

Abstract

Embodiments herein relate to a method in a first radio base station () for enabling detection of a faulty antenna in a radio communications network. The radio communication network comprises the first radio base station () providing radio coverage in a first cell (), and a second radio base station () providing radio coverage in a second cell (). The first radio base station () receives, from at least one user equipment in the first cell (), a first set of measurement reports over a first period of time. At least some measurement reports are indicating a cell relation between the first cell () and the second cell (). The first radio base station () further forms reference statistics of the cell relation between the first cell () and the second cell () based on the first set of measurement reports. Furthermore, the first radio base station () receives, from at least one user equipment in the first cell (), a second set of measurement reports over a second period of time. The first radio base station () then forms current statistics of the cell relation between the first cell () and the second cell () based on the second set of measurement reports. The first radio base station () then compares the current statistics with the reference statistics to enable the detection of a faulty antenna in the first radio base station () or the second radio base station ().