Applying more robust transmission procedure

A network node configured to form part 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 network node comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, causes the network node to:
• transmit a first control signal to the wireless device during a receiving period for the wireless device;
• determine that the first control signal is likely to have failed to be correctly received by the wireless device;
• determine that a second control signal needs to be transmitted to the wireless device, the second control signal corresponding to the first control signal;
• apply a more robust transmission procedure for the second control signal compared to a corresponding transmission procedure for the first control signal;
• transmit the second control signal to the wireless device;
• and
• wherein the instructions to apply a more robust transmission procedure comprise instructions that, when executed by the processor, causes the network node to use a Single Input Single Output, SISO, or Single Input Multiple Output, SIMO, transmission and select a Downlink Control Information, DCI, format which is more robust for the second control signal.

A network node comprising:

• means for transmitting a first control signal to the wireless device during a receiving period for the wireless device, the wireless device forming part of a cellular network also comprising the network node, the wireless device being in a discontinuous reception mode comprising receiving periods and idle periods;
• means for determining that the first control signal is likely to have failed to be correctly received by the wireless device;
• means for determining that a second control signal needs to be transmitted to the wireless device, the second control signal corresponding to the first control signal;
• means for applying a more robust transmission procedure for the second control signal compared to a corresponding transmission procedure for the first control signal;
• means for transmitting the second control signal to the wireless device;
• and
• wherein means for applying a more robust transmission procedure comprises means for using a Single Input Single Output, SISO, or Single Input Multiple Output, SIMO, transmission and means for selecting a Downlink Control Information, DCI, format which is more robust for the second control signal.

A computer program comprising computer program code stored on a non-transitory medium which, when run on a network node configured to form part of a cellular network also comprising a wireless device, the wireless device being in a discontinuous reception mode comprising receiving periods and idle periods, causes the network node to:

• transmit a first control signal to the wireless device during a receiving period for the wireless device;
• determine that the first control signal is likely to have failed to be correctly received by the wireless device;
• determine that a second control signal needs to be transmitted to the wireless device, the second control signal corresponding to the first control signal;
• apply a more robust transmission procedure for the second control signal compared to a corresponding transmission procedure for the first control signal;
• transmit the second control signal to the wireless device;
• and
• wherein program code causing the network node to apply a more robust transmission procedure comprises program code causing the network node to use a Single Input Single Output, SISO, or Single Input Multiple Output, SIMO, transmission and to select a Downlink Control Information, DCI, format which is more robust for the second control signal.