Abstract: A node (100, 200) of a cellular network obtains reports of measurements for a given cell (20) of the cellular network. The measurements are performed by one or more communication devices (10) associated with a surrounding cell (21) of the given cell. Each measurement indicates a received signal strength of a signal (RS) from the given cell (20). On the basis of the received signal strengths, the node (100) determines a level of interference generated by the given cell (20) with respect to the surrounding cell (21).

Abstract: An apparatus and corresponding method for determining a cause of a fault in a network. The apparatus comprises a means for receiving, which may be a receiver, configured to receive a plurality of time separated samples of a primary network metric that are indicative of a fault in the network, and a plurality of time separated samples of one or more indicator network metrics. The apparatus comprises a means for correlating, which may be a correlator, configured to determine one or more metric correlation values relating to dependences between the samples of the primary network metric and the samples of each of the one or more indicator network metrics. The correlator is further configured to determine one or more fault correlation values relating to dependences between the one or more metric correlation values and a plurality of stored metric correlation values associated with a fault cause.

Abstract: A method performed by a first network node for detecting outage of a radio cell served by a second network node. The first network node and the second network node operate in a wireless communications system. The first network node determines a number of incoming handovers for the radio cell of the second network node in a first measurement period. The first network node then determines whether the radio cell is in outage, based on whether the determined number of incoming handovers in the first measurement period is under or equal to a threshold.

Abstract: A method performed by a first network node for detecting outage of a radio cell served by a second network node. The first network node and the second network node operate in a wireless communications system. The first network node determines a number of incoming handovers for the radio cell of the second network node in a first measurement period. The first network node then determines whether the radio cell is in outage, based on whether the determined number of incoming handovers in the first measurement period is under or equal to a threshold.

Abstract: An apparatus and corresponding method for determining a cause of a fault in a network. The apparatus comprises a means for receiving, which may be a receiver, configured to receive a plurality of time separated samples of a primary network metric that are indicative of a fault in the network, and a plurality of time separated samples of one or more indicator network metrics. The apparatus comprises a means for correlating, which may be a correlator, configured to determine one or more metric correlation values relating to dependences between the samples of the primary network metric and the samples of each of the one or more indicator network metrics. The correlator is further configured to determine one or more fault correlation values relating to dependences between the one or more metric correlation values and a plurality of stored metric correlation values associated with a fault cause.

Abstract: A node (100, 200) of a cellular network obtains reports of measurements for a given cell (20) of the cellular network. The measurements are performed by one or more communication devices (10) associated with a surrounding cell (21) of the given cell. Each measurement indicates a received signal strength of a signal (RS) from the given cell (20). On the basis of the received signal strengths, the node (100) determines a level of interference generated by the given cell (20) with respect to the surrounding cell (21).