Methods, a wireless device, a radio network node for managing a control block

A method, performed by a radio network node, for managing a control block for a wireless device, wherein the control block carries control information addressed to the wireless device, wherein the wireless device is served by the radio network node, wherein a Temporary Flow Identifier, TFI, and an extended Temporary Flow Identifier, eTFI, are assigned to the wireless device by the radio network node, wherein the method comprises:

• constructing the control information, wherein a header portion of the control information comprises the TFI assigned to the wireless device;
• encoding the control information including the header portion, using a FIRE code, to obtain a FIRE-encoded control block;
• performing a bit-wise modulo two addition between the FIRE-encoded control block and a combination of the eTFI and a pre-determined bit pattern to obtain a modified control block, wherein the pre-determined bit pattern is distributed over a distance being equal to or exceeding a shortest uncorrectable burst error length associated with the FIRE code;
• adding channel coding redundancy to the modified control block;
• mapping the modified control block onto physical resources;
• and
• sending the modified control block to the wireless device,
• wherein the FIRE-encoded control block comprises parity bits, wherein the bit-wise modulo two addition between the FIRE-encoded control block and the combination of the eTFI and the pre-determined bit pattern is performed using bit positions among the parity bits to obtain the modified control block.

A wireless device configured to manage a modified control block for carrying control information for the wireless device, wherein the modified control block is encodable using a FIRE code, wherein the wireless device is servable by a radio network node, wherein a Temporary Flow Identifier, TFI, and an extended Temporary Flow Identifier, eTFI, are assignable to the wireless device by the radio network node, wherein the wireless device comprises:

• a processing circuit;
• and
• a non-transitory memory that stores computer readable program code;
• wherein when the processing circuit executes the computer readable program code, the wireless device is caused to:
• receive the modified control block from the radio network node;
• perform a bit-wise modulo two addition between the modified control block and a combination of the eTFI and a pre-determined bit pattern to obtain a control block, wherein the pre-determined bit pattern is distributed over a distance being equal to or exceeding a shortest uncorrectable burst error length associated with the FIRE code;
• and
• decode the control block using FIRE-decoding to obtain the control information,
• wherein the modified control block comprises parity bits, wherein the bit-wise modulo two addition between the modified control block and the combination of the eTFI and the pre-determined bit pattern is performed using bit positions among the parity bits to obtain the control block.

A radio network node configured to manage a control block for a wireless device, wherein the control block is capable of carrying control information addressed to the wireless device, wherein the wireless device is servable by the radio network node, wherein a Temporary Flow Identifier, TFI, and an extended Temporary Flow Identifier, eTFI, are assignable to the wireless device by the radio network node, wherein the radio network node comprises:

• a processing circuit;
• and
• a non-transitory memory that stores computer readable program code;
• wherein when the processing circuit executes the computer readable program code, the radio network node is caused to:
• construct the control information, wherein a header portion of the control information comprises the TFI assigned to the wireless device;
• encode the control information including the header portion, using a FIRE code, to obtain a FIRE-encoded control block;
• perform a bit-wise modulo two addition between the FIRE-encoded control block and a combination of the eTFI and a pre-determined bit pattern to obtain a modified control block, wherein the pre-determined bit pattern is distributed over a distance being equal to or exceeding a shortest uncorrectable burst error length associated with the FIRE code;
• add channel coding redundancy to the modified control block;
• map the modified control block onto physical resources;
• and
• send the modified control block to the wireless device,
• wherein the FIRE-encoded control block comprises parity bits, wherein the bit-wise modulo two addition between the FIRE-encoded control block and the combination of the eTFI and the pre-determined bit pattern is performed using bit positions among the parity bits to obtain the modified control block.