Physical downlink shared channel including part of a downlink control information
In an aspect, a PDCCH and a PDSCH are transmitted by a BS to a UE, whereby the PDDCH includes a first DCI part and the PDSCH includes a second DCI part. In an example, a TBS associated with the PDSCH may be determined (e.g., either by factoring or ignoring resource elements associated with the second DCI part). In another example, the PDSCH may be associated with a modulation scheme with a constellation having constellation points, whereby the second DCI part in the PDSCH is restricted to a subset of the constellation points. In another example, rate-matching may be performed for one or more resource elements of the second DCI part.
1. A method of operating a network component, comprising:
scheduling, during at least one slot, transmission of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH), the PDCCH including a first part of a Downlink Control Information (DCI), the PDSCH including a second part of the DCI, wherein the scheduling includes determining a transport block size (TBS) that is associated with the PDSCH and that is based on a discount attributable to resource elements allocated for transport of the second part of the DCI of the PDSCH; and; and
transmitting the PDCCH and the PDSCH during the at least one slot,
wherein the PDSCH is transmitted in accordance with the determined TBS.
2. The method of claim 1 , wherein the first and second parts of the DCI comprise a two-part DCI.
3. The method of claim 1 , wherein the TBS is determined before an allocation of the resource elements among a set of PDSCH resource elements for transport of the second part of the DCI.
4. The method of claim 3 , wherein the TBS is determined using a modulation and coding scheme (MCS) of the PDSCH as a tuning parameter to adjust the determined TBS to offset a coding rate associated with the resource elements allocated for transport of the second part of the DCI.
5. The method of claim 1 , wherein the first part of the DCI includes a control information field associated with the second part of the DCI within the PDSCH.
6. The method of claim 5 , wherein the TBS is determined based on a set of resources occupied by PDSCH data and excludes a subset of the set of resource elements allocated for transport of the second part of the DCI.
7. The method of claim 6 ,
wherein the control information field indicates a number of resource elements in the subset, and
wherein the TBS determination subtracts the number of resource elements in the subset from a total number of the set of resource elements occupied by the PDSCH data.
8. The method of claim 6 , further comprising:
re-transmitting the PDSCH in accordance with the determined TBS.
9. The method of claim 5 , wherein the TBS is determined in accordance with a TBS adjustment that is indicated to the UE.
10. The method of claim 9 ,
wherein the TBS adjustment is indicated to the UE as a percentage of TBS size reduction in the determined TBS, or
wherein the TBS adjustment is indicated the UE as an absolute TBS size reduction in the determined TBS, or
wherein the TBS adjustment is indicated to the UE via the control information field of the first part of the DCI in the PDCCH, or
wherein the TBS adjustment is indicated to the UE via the second part of the DCI in the PDSCH.
11. The method of claim 5 , wherein the TBS is determined in accordance with a TBS adjustment that is indicated by the control information field.
12. The method of claim 11 ,
wherein the TBS adjustment is indicated to the UE as a size of the second part of the DCI within the PDSCH, and
wherein the size is conveyed via the control information field.
13. The method of claim 1 ,
wherein the PDCCH and the PDSCH are transmitted during the same slot, or
wherein the PDCCH is transmitted during a first slot and the PDSCH is transmitted during a second slot that follows the first slot.
14. The method of claim 1 ,
wherein the second part of the DCI comprises one or more downlink (DL) grants, one or more uplink (UL) grants, or a combination thereof, or
wherein the second part of the DCI comprises a first grant associated with a first UE and a second grant associated with a second UE, or
a combination thereof.
15. A method of operating a user equipment (UE), comprising:
receiving, during at least one slot, transmission from a network component of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH), the PDCCH including a first part of a Downlink Control Information (DCI), the PDSCH including a second part of the DCI; and
determining a transport block size (TBS) that is associated with the PDSCH and that is based on a discount attributable to resource elements allocated for transport of the second part of the DCI of the PDSCH.
16. The method of claim 15 , wherein the first and second parts of the DCI comprise a two-part DCI.
17. The method of claim 15 , wherein the TBS is determined before an allocation of the resource elements among a set of PDSCH resource elements for transport of the second part of the DCI.
18. The method of claim 15 , wherein the first part of the DCI includes a control information field associated with the second part of the DCI within the PDSCH.
19. The method of claim 18 , wherein the TBS is determined based on a set of resources occupied by PDSCH data and excludes a subset of the set of resource elements allocated for transport of the second part of the DCI.
20. The method of claim 19 ,
wherein the control information field indicates a number of resource elements in the subset, and
wherein the TBS determination subtracts the number of resource elements in the subset from a total number of the set of resource elements occupied by the PDSCH data.
21. The method of claim 19 , further comprising:
receiving a re-transmission of the PDSCH in accordance with the determined TBS.
22. The method of claim 18 , wherein the TBS is determined in accordance with a TBS adjustment that is indicated to the UE.
23. The method of claim 22 ,
wherein the TBS adjustment is indicated to the UE as a percentage of TBS size reduction in the determined TBS, or
wherein the TBS adjustment is indicated the UE as an absolute TBS size reduction in the determined TBS, or
wherein the TBS adjustment is indicated to the UE via the control information field of the first part of the DCI in the PDCCH, or
wherein the TBS adjustment is indicated to the UE via the second part of the DCI in the PDSCH.
24. The method of claim 18 , wherein the TBS is determined in accordance with a TBS adjustment that is indicated by the control information field.
25. The method of claim 24 ,
wherein the TBS adjustment is indicated to the UE as a size of the second part of the DCI within the PDSCH conveyed, and
wherein the size is conveyed via the control information field.
26. The method of claim 15 ,
wherein the second part of the DCI comprises one or more downlink (DL) grants, one or more uplink (UL) grants, or a combination thereof, or
wherein the second part of the DCI comprises a first grant associated with a first UE and a second grant associated with a second UE, or
a combination thereof.