Multiplexing hybrid automatic repeat request feedback

A method performed by a wireless device configured to communicate with a network node, the method comprising:

• transmitting a first hybrid automatic repeat request, HARQ, feedback responsive to a first downlink, DL, transmission, the first HARQ feedback transmitted using not more than a number of bits indicated for the first HARQ feedback, the first DL transmission having a first priority;
• transmitting a second HARQ feedback responsive to a second DL transmission, the second DL transmission having a second priority higher than the first priority;
• and
• multiplexing the first HARQ feedback and the second HARQ feedback using not more than the indicated number of bits for the first HARQ feedback, to produce a multiplexed HARQ feedback, a certain number of bits of the first HARQ feedback being dropped in order to use the indicated number of bits.

A network node configured to communicate with a wireless device according to a broad band process and to communicate with the wireless device according to a low latency process, the network node comprising:

• a radio interface configured to:
• transmit an indication of a number of bits to be used by the wireless device to transmit a first hybrid automatic repeat request, HARQ, feedback, the first HARQ feedback being responsive to a first downlink, DL, transmission, the first DL transmission having a first priority;
• and
• receive HARQ feedback, the received HARQ feedback including at least one of the first HARQ feedback and second HARQ feedback, the second HARQ feedback being responsive to a second DL transmission, the second DL transmission having a second priority higher than the first priority;
• and
• processing circuitry in communication with the radio interface, the processing circuitry configured to determine whether bits of the received HARQ feedback correspond to the first DL transmission or to the second DL transmission, the received HARQ feedback including the first HARQ feedback multiplexed with the second HARQ feedback, the received HARQ feedback having no more bits than the indicated number of bits for the first HARQ feedback, a certain number of bits of the first HARQ feedback having been dropped in order to use the indicated number of bits.

A method performed by a network node configured to communicate with a wireless device, wireless device, according to a broad band process and to communicate with the wireless device according to a low latency process, the method comprising:

• transmitting an indication of a number of bits to be used by the wireless device to transmit a first hybrid automatic repeat request, HARQ, feedback, the first HARQ feedback being responsive to a first downlink, DL, transmission, the first DL transmission having a first priority;
• and
• receiving HARQ feedback, the received HARQ feedback including at least one of the first HARQ feedback and second HARQ feedback, the second HARQ feedback being responsive to a second DL transmission, the second DL transmission having a second priority higher than the first priority;
• and
• determining whether bits of the received HARQ feedback correspond to the first DL transmission or to the second DL transmission, the received HARQ feedback including the first HARQ feedback multiplexed with the second HARQ feedback, the HARQ feedback having no more bits than the indicated number of bits for the first HARQ feedback, a certain number of bits of the first HARQ feedback having been dropped in order to use the indicated number of bits.