An apparatus, method and computer program is described comprising: generating a local outage time database for a first cell of a mobile communication system, wherein the local outage time database stores first latency data for each of a plurality of devices served by the first cell, wherein each first latency data comprises time left to outage data for the respective device; sending selected parts of the local outage time database to one or more other cells of the mobile communication network; receiving second latency data from at least one of the one or more other cells of the mobile communication system, wherein said second latency data includes time left to outage data for one or more devices served by said other cells; and generating a multi-cell outage time database including some or all of the shared selected parts of the local outage time database and some or all of the received second latency data.