Downlink control for multi-TRP transmissions

A cellular base station, comprising:

• at least one antenna;
• at least one radio coupled to the at least one antenna;
• and
• a processor coupled to the at least one radio;
• wherein the antenna, the radio, and the processor are configured to cause the cellular base station to:
• provide, from a first transmission reception point (TRP) of a plurality of TRPs, downlink control information scheduling a plurality of frequency division multiplexed (FDM) downlink transmissions from the plurality of TRPs to a wireless device;
• determine physical resource block bundling sizes separately for the plurality of FDM downlink transmissions from the plurality of TRPs, wherein the determination is based on parameters comprising at least one of:
• whether the plurality of FDM downlink transmissions from the plurality of TRPs are contiguous;
• or
• whether a number of the plurality of FDM downlink transmissions from the plurality of TRPs exceeds a threshold;
• and
• provide, from the first TRP, at least one frequency division multiplexed (FDM) downlink transmission of the plurality of FDM downlink transmissions to the wireless device in accordance with the downlink control information, wherein the downlink control information includes one indication of a common modulation and coding scheme (MCS) that is applied to the plurality of FDM downlink transmissions and one indication of a redundancy version (RV), wherein respective RVs for the respective FDM downlink transmissions of the plurality of FDM transmissions are determinable in a preconfigured manner from the indication of the RV, wherein a first RV for a first FDM downlink transmission of the plurality of FDM transmissions is different from a second RV for a second FDM downlink transmission of the plurality of FDM transmissions and the second FDM downlink transmission is different from the first FDM downlink transmission.

An apparatus, comprising:

• a processor configured to cause a wireless device to:
• receive, from a first transmission reception point (TRP) of a plurality of TRPs, a downlink control information transmission scheduling a plurality of frequency division multiplexed (FDM) downlink transmissions from the plurality of TRPs;
• determine physical resource block bundling sizes separately for the plurality of FDM downlink transmissions from the plurality of TRPs, wherein the determination is based on parameters comprising at least one of:
• whether the plurality of FDM downlink transmissions from the plurality of TRPs are contiguous;
• or
• whether a number of the plurality of FDM downlink transmissions from the plurality of TRPs exceeds a threshold;
• and
• receive the plurality of FDM downlink transmissions from the plurality of TRPs in accordance with the downlink control information transmission, wherein the downlink control information includes one indication of a common modulation and coding scheme (MCS) that is applied to the plurality of FDM downlink transmissions and one indication of a redundancy version (RV), wherein respective RVs for the respective FDM downlink transmissions of the plurality of FDM transmissions are determinable in a preconfigured manner from the indication of the RV, wherein a first RV for a first FDM downlink transmission of the plurality of FDM transmissions is different from a second RV for a second FDM downlink transmission of the plurality of FDM transmissions and the second FDM downlink transmission is different from the first FDM downlink transmission.