HARQ-ACK codebook supporting UEs with parallel PDSCH reception capability

Apparatus, comprising:

• at least one processor;
• and
• at least one memory comprising computer program code,
• the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to
• deciding that an overlapping transmission to a terminal is restricted to an overlapping transmission of a transmission of a first type and a transmission of a second type, wherein a value of a configuration parameter of the transmission of the first type is different from a value of the configuration parameter of the transmission of the second type;
• splitting, in response to the overlapping transmission is-being restricted, an overall symbol allocation table comprising symbol allocations into a first type allocation table comprising one or more of the symbol allocations related to the transmission of the first type and into a second type symbol allocation table comprising one or more of the symbol allocations related to the transmission of the second type;
• pruning the first type symbol allocation table in order to obtain one or more first type occasions for the transmission of the first type and to prune the second type symbol allocation table in order to obtain one or more second type occasions for the transmission of the second type, wherein the first type symbol allocation table is pruned separately from the second type symbol allocation table;
• instructing a first transmitter to schedule, on a first resource, a respective transmission of the first type on one or more of the one or more first type occasions and a respective transmission of the second type on one or more of the one or more second type occasions, and
• instructing a second transmitter to schedule, on a second resource different from the first resource, a respective transmission of the first type on one or more of the one or more first type occasions and a respective transmission of the second type on one or more of the one or more second type occasions;
• observing whether a respective codebook is received, wherein the codebook comprises an ordered sequence of acknowledgment bits for each of the first resource and the second resource and for each of the one or more first type occasions and for each of the one or more second type occasions, and each of the acknowledgment bits indicates whether or not the respective transmission is successfully received.

A method, comprising:

• checking whether an overlapping transmission is restricted to an overlapping transmission of a transmission of a first type and a transmission of a second type, wherein a value of a configuration parameter of the transmission of the first type is different from a value of the configuration parameter of the transmission of the second type;
• splitting, in response to the overlapping transmission being restricted, an overall symbol allocation table comprising symbol allocations into a first type symbol allocation table comprising one or more of the symbol allocations related to the transmission of the first type and into a second type symbol allocation table comprising one or more of the symbol allocations related to the transmission of the second type;
• pruning the first type symbol allocation table in order to obtain one or more first type occasions for the transmission of the first type;
• pruning the second type symbol allocation table in order to obtain one or more second type occasions for the transmission of the second type, wherein the first type symbol allocation table is pruned separately from the second type symbol allocation table;
• monitoring, for each of a first resource and a second resource different from the first resource and for each of the one or more first type occasions, and for each of the one or more second type occasions whether a respective transmission is successfully received;
• acknowledging in a codebook comprising an ordered sequence of acknowledgment bits for each of the first resource and the second resource and for each of the one or more first type occasions and for each of the one or more second type occasions the respective transmission in response to the respective transmission is being successfully received.

A method, comprising:

• deciding that an overlapping transmission to a terminal is restricted to an overlapping transmission of a transmission of a first type and a transmission of a second type, wherein a value of a configuration parameter of the transmission of the first type is different from a value of the configuration parameter of the transmission of the second type;
• splitting, in response to the overlapping transmission being restricted, an overall symbol allocation table comprising symbol allocations into a first type allocation table comprising one or more of the symbol allocations related to the transmission of the first type and into a second type symbol allocation table comprising one or more of the symbol allocations related to the transmission of the second type;
• pruning the first type symbol allocation table in order to obtain one or more first type occasions for the transmission of the first type;
• pruning the second type symbol allocation table in order to obtain one or more second type occasions for the transmission of the second type, wherein the first type symbol allocation table is pruned separately from the second type symbol allocation table;
• instructing a first transmitter to schedule, on a first resource, a respective transmission of the first type on one or more of the one or more first type occasions and a respective transmission of the second type on one or more of the one or more second type occasions;
• instructing a second transmitter to schedule, on a second resource different from the first resource, a respective transmission of the first type on one or more of the one or more first type occasions and a respective transmission of the second type on one or more of the one or more second type occasions;
• observing whether a respective codebook is received, wherein the codebook comprises an ordered sequence of acknowledgment bits for each of the first resource and the second resource and for each of the one or more first type occasions and for each of the one or more second type occasions, and each of the acknowledgment bits indicates whether or not the respective transmission is successfully received.