A network node and a method therein for configuring a first communications device to monitor reception of an information signal in monitoring time periods of different time durations. One monitoring time period being relatively shorter than another, longer monitoring time period. The information signal is repeatedly transmitted by a Radio Network Node (RNN) with a first periodicity during the longer monitoring time period and with a second periodicity during the shorter monitoring time period, the first periodicity being longer than the second periodicity. The network node determines that the first communications device is to be configured for monitoring reception of the information signal within one or more shorter monitoring time periods. Further, the network node configures the first communications device with a Discontinuous Reception cycle indicating a monitoring time point falling within the one or more shorter monitoring time periods.