Time-domain repetition of a set of transport blocks
Apparatuses, methods, and systems are disclosed for indicating a repetition scheme for a scheduled set of TBs. One apparatus includes a receiver that receives control signaling containing scheduling information for the transmission of a set of transport blocks (“TBs”) over a plurality of transmission occasions and receives repetition information that schedules time-domain repetition of the set of TBs. The apparatus includes a processor that determines, for each TB in the set of TBs, whether to apply the time-domain repetition based on time-domain resources allocated for each TB and controls a transmitter to transmit the set of TBs in accordance with the scheduling information and the repetition information.
1 . A method performed by a User Equipment (“UE”), the method comprising:
receiving control signaling containing scheduling information for transmission of a set of transport blocks (“TBs”) over a plurality of transmission occasions, wherein the control signaling comprises a Time-Domain Resource Allocation (“TDRA”) table and the scheduling information for the set of TBs comprises multiple Start and Length Indicator Values (“SLIVs”) in a row of the TDRA table, the multiple SLIVs corresponding to the set of TBs;
receiving repetition information that schedules time-domain repetition of the set of TBs, wherein the repetition information comprises a repetition factor that is dynamically indicated within the row of the TDRA table;
determining, for each TB in the set of TBs, whether to apply the time-domain repetition based on time-domain resources allocated for each TB and further based on a traffic priority level corresponding to each TB; and
transmitting the set of TBs in accordance with the scheduling information and the repetition information.
2 . The method of claim 1 , wherein the set of TBs comprises a single TB scheduled over the plurality of transmission occasions.
3 . The method of claim 1 , wherein the repetition information comprises a repetition factor that is semi-statically configured by higher-layer signaling.
4 . The method of claim 1 , wherein transmitting the set of TBs in accordance with the scheduling information and the repetition information comprises transmitting a first instance of each TB in the set of TBs prior to transmitting a second instance of any TB in the set of TBs.
5 . The method of claim 1 , wherein transmitting the set of TBs in accordance with the scheduling information and the repetition information comprises transmitting all repetitions of a first TB in the set of TBs prior to transmitting a second TB in the set of TBs.
6 . The method of claim 1 , wherein the row of the TDRA table comprises a mapping type for each SLIV, wherein an actual length of repetition follows a length value indicated in a SLIV when the corresponding mapping type is a first type, and wherein the actual length of repetition differs from the indicated length value in the SLIV when the corresponding mapping type is a second type.
7 . The method of claim 1 , wherein the control signaling comprises Downlink Control Information (“DCI”), wherein the DCI further comprises a New Data Indicator (“NDI”) value for each TB in the set of TBs, wherein the determining whether to apply the time-domain repetition is further based on the NDI corresponding to each TB, wherein no repetition of a particular TB is scheduled within a plurality of slots when the NDI of the particular TB indicates a retransmission.
8 . The method of claim 1 , wherein determining whether to apply the time-domain repetition is further based on a traffic priority level corresponding to each TB, wherein no repetition of a particular TB is scheduled within a plurality of slots when the traffic priority level of the particular TB is below a threshold level.
9 . The method of claim 1 , wherein a different repetition factor is associated with different traffic priority levels corresponding to the set of TBs, wherein a first TB having a higher priority has a higher repetition factor than a second TB having a lower priority.
10 . The method of claim 1 , wherein the control signaling further comprises a priority indication for each TB in the set of TBs, wherein determining whether to apply the time-domain repetition is further based on an indicated traffic priority level corresponding to each TB.
11 . A User Equipment (“UE”) in a mobile for wireless communication comprising:
a memory; and
a processor coupled with the memory and configured to cause the UE to receive control signaling containing scheduling information for transmission of a set of transport blocks (“TBs”) over a plurality of transmission occasions, wherein the control signaling comprises a Time-Domain Resource Allocation (“TDRA”) table and the scheduling information for the set of TBs comprises multiple Start and Length Indicator Values (“SLIVs”) in a row of the TDRA table, the multiple SLIVs corresponding to the set of TBs;
receive repetition information that schedules time-domain repetition of the set of TBs, wherein the repetition information comprises a repetition factor that is dynamically indicated within the row of the TDRA table;
determine, for each TB in the set of TBs, whether to apply the time-domain repetition based on time-domain resources allocated for each TB and further based on a traffic priority level corresponding to each TB; and
transmit the set of TBs in accordance with the scheduling information and the repetition information.
12 . A method performed by a base station, the method comprising:
determining scheduling information for transmission of a set of transport blocks (“TBs) over a plurality of transmission occasions;
determining repetition information that schedules time-domain repetition of the set of TBs, wherein the repetition information comprises a repetition factor that is dynamically indicated within the row of a Time-Domain Resource Allocation (“TDRA”) table;
transmitting control signaling to a User Equipment (“UE”), the control signaling containing the scheduling information and the repetition information, wherein the control signaling comprises the TDRA table and the scheduling information for the set of TBs comprises multiple Start and Length Indicator Values (“SLIVs”) in a row of the TDRA table, the multiple SLIVs corresponding to the set of TBs; and
receiving, from the UE, the set of TBs in accordance with the scheduling information and the repetition information, wherein the time-domain repetition is applied to the set of TBs based on time-domain resources allocated for each TB and further based on a traffic priority level corresponding to each TB.
13 . The method of claim 12 , wherein the set of TBs comprises a single TB scheduled over the plurality of transmission occasions.
14 . The method of claim 12 , wherein receiving the set of TBs in accordance with the scheduling information and the repetition information comprises receiving a first instance of each TB in the set of TBs prior to receiving a second instance of any TB in the set of TBs.
15 . The method of claim 12 , wherein receiving the set of TBs in accordance with the scheduling information and the repetition information comprises receiving all repetitions of a first TB in the set of TBs prior to receiving a second TB in the set of TBs.
16 . The method of claim 12 , wherein the control signaling comprises Downlink Control Information (“DCI”), wherein the DCI further comprises a New Data Indicator (“NDI”) value for each TB in the set of TBs, wherein the UE applies time-domain repetition to the set of TBs based on the NDI corresponding to each TB, wherein no repetition of a particular TB is scheduled within a plurality of slots when the NDI of the particular TB indicates a retransmission.
17 . The method of claim 12 , wherein a different repetition factor is associated with different traffic priority levels corresponding to the set of TBs, wherein a first TB having a higher priority has a higher repetition factor than a second TB having a lower priority.