A method performed in a network node of a cellular network also comprising a wireless device, the wireless device being in a discontinuous reception mode comprising receiving periods and idle periods, the method comprising the steps of: transmitting a first control signal to the wireless device during a receiving period for the wireless device; determining that a first control signal is likely to have failed to be correctly received by the wireless device; determining that a second control signal needs to be transmitted to the wireless device, the second control signal corresponding to the first control signal; when the wireless device is in an idle period, postponing any transmission of the second control signal until the wireless device is in a receiving period; transmitting the second control signal to the wireless device when the wireless device is in a receiving period; in the step of transmitting a first control signal, the first control signal comprises an uplink resource allocation for the wireless device; and in the step of transmitting a second control signal, the second control signal comprises an uplink resource allocation for the wireless device; characterised in that the step of transmitting a first control signal comprises transmitting the first control signal during a time slot for a first hybrid automatic repeat request, HARQ, process and wherein the step of transmitting the second control signal comprises transmitting the second control signal during a time slot for the first HARQ process; and further comprising the step, prior to the step of transmitting the second control signal, of: transmitting at least one additional control signal to the wireless device whereby the wireless device is prevented from entering an idle period for a next time slot for the first HARQ process. transmitting a first control signal to the wireless device during a receiving period for the wireless device; determining that a first control signal is likely to have failed to be correctly received by the wireless device; determining that a second control signal needs to be transmitted to the wireless device, the second control signal corresponding to the first control signal; when the wireless device is in an idle period, postponing any transmission of the second control signal until the wireless device is in a receiving period; transmitting the second control signal to the wireless device when the wireless device is in a receiving period; in the step of transmitting a first control signal, the first control signal comprises an uplink resource allocation for the wireless device; and in the step of transmitting a second control signal, the second control signal comprises an uplink resource allocation for the wireless device; characterised in that the step of transmitting a first control signal comprises transmitting the first control signal during a time slot for a first hybrid automatic repeat request, HARQ, process and wherein the step of transmitting the second control signal comprises transmitting the second control signal during a time slot for the first HARQ process; and further comprising the step, prior to the step of transmitting the second control signal, of: transmitting at least one additional control signal to the wireless device whereby the wireless device is prevented from entering an idle period for a next time slot for the first HARQ process.