Data indicator and redundancy version for invalid PxSCHs in multi-PxSCH grants
Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for signaling a new data indicator (NDI) and/or redundancy version (RV) for physical uplink/downlink shared channel (PxSCH) transmissions scheduled by a multi-PxSCH downlink control information (DCI) grant. In some cases, these techniques may be used even when a scheduled PxSCH transmission is invalid. In some cases, a number of bits in an NDI field of the DCI corresponds to a number of PxSCHs scheduled by the multi-PxSCH DCI grant. In some cases, a number of bits in an RV field of the DCI corresponds the number of PxSCHs scheduled by the multi-PxSCH DCI grant.
1. A method, performed by a user equipment (UE), for wireless communication, comprising:
receiving a downlink control information (DCI) message scheduling a plurality of transmissions in a plurality of different slots, wherein:
a first set of transmissions of the plurality of transmissions in a first set of slots of the plurality of different slots collide with a corresponding second set of transmissions previously scheduled within the first set of slots,
the DCI message includes at least a first field comprising a first plurality of values,
each different value in the first plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the first plurality of values is equal to a number of transmissions in the plurality of transmissions; and
communicating a third set of transmissions of the plurality of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots.
2. The method of claim 1 , wherein:
the DCI message includes at least a second field comprising a second plurality of values,
each different value in the second plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the second plurality of values is equal to the number of transmissions in the plurality of transmissions.
3. The method of claim 2 , wherein:
the first field comprises a new data indicator (NDI) field and the second field comprises a redundancy version (RV) field,
the first plurality of values comprises a plurality of different NDI values, each different NDI value corresponding to a different transmission in the plurality of transmissions, and
the second plurality of values comprises a plurality of different RV values, each different RV value corresponding to a different transmission in the plurality of transmissions.
4. The method of claim 3 , further comprising determining:
a first set of different NDI values from the plurality of different NDI values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots;
a second set of different NDI values from the plurality of different NDI values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots;
a third set of different RV values from the plurality of different RV values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots; and
a fourth set of different RV values from the plurality of different RV values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots.
5. The method of claim 4 , wherein communicating the third set of transmissions comprises:
using the first set of different NDI values and the third set of different RV values to communicate the third set of transmissions, and
discarding the second set of different NDI values and the fourth set of different RV values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots.
6. The method of claim 4 , wherein:
determining the first set of different NDI values and the second set of different NDI values depends on bit positions of the different NDI values of the plurality of different NDI values within the NDI field, and
the bit positions of the different NDI values within the NDI field are based on the first set of transmissions of the plurality of transmissions that collide with the corresponding second set of transmissions.
7. The method of claim 6 , wherein:
the bit positions, within the NDI field, of the different NDI values corresponding to the first set of transmissions of the plurality of transmissions occur after the bit positions, within the NDI field, of the different NDI values corresponding to the third set of transmissions of the plurality of transmissions,
the first set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the third set of transmissions of the plurality of transmissions, and
the second set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the first set of transmissions of the plurality of transmissions.
8. The method of claim 6 , wherein:
bit positions, within the NDI field, of the different NDI values corresponding to the first set of transmissions of the plurality of transmissions and the third set of transmissions of the plurality of transmissions occur in numerical order of the plurality of transmissions,
the first set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the third set of transmissions of the plurality of transmissions, and
the second set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the first set of transmissions of the plurality of transmissions.
9. The method of claim 4 , wherein:
determining the third set of different RV values and the fourth set of different RV values depends on bit positions of the different RV values of the plurality of different RV values within the RV field, and
the bit positions of the different RV values within the RV field are based on the first set of transmissions of the plurality of transmissions that collide with the corresponding second set of transmissions.
10. The method of claim 9 , wherein:
the bit positions, within the RV field, of the different RV values corresponding to the first set of transmissions of the plurality of transmissions occur after the bit positions, within the RV field, of the different RV values corresponding to the third set of transmissions of the plurality of transmissions,
the third set of different RV values include the different RV values within the bit positions of the RV field corresponding to the third set of transmissions of the plurality of transmissions, and
the fourth set of different RV values include the different RV values within the bit positions of the RV field corresponding to the first set of transmissions of the plurality of transmissions.
11. The method of claim 9 , wherein:
bit positions, within the RV field, of the different RV values corresponding to the first set of transmissions of the plurality of transmissions and the third set of transmissions of the plurality of transmissions occur in numerical order of the plurality of transmissions,
the third set of different RV values include the different RV values within the bit positions of the RV field corresponding to the third set of transmissions of the plurality of transmissions, and
the fourth set of different RV values include the different RV values within the bit positions of the RV field corresponding to the first set of transmissions of the plurality of transmissions.
12. A method, performed by a network entity, for wireless communication, comprising:
transmitting a downlink control information (DCI) message scheduling a plurality of transmissions in a plurality of different slots, wherein:
a first set of transmissions of the plurality of transmissions in a first set of slots of the plurality of different slots collide with a corresponding second set of transmissions previously scheduled within the first set of slots,
the DCI message includes at least a first field comprising a first plurality of values,
each different value in the first plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the first plurality of values is equal to a number of transmissions in the plurality of transmissions; and
communicating a third set of transmissions of the plurality of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots.
13. The method of claim 12 , wherein:
the DCI message includes at least a second field comprising a second plurality of values,
each different value in the second plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the second plurality of values is equal to the number of transmissions in the plurality of transmissions.
14. The method of claim 13 , wherein:
the first field comprises a new data indicator (NDI) field and the second field comprises a redundancy version (RV) field,
the first plurality of values comprises a plurality of different NDI values, each different NDI value corresponding to a different transmission in the plurality of transmissions, and
the second plurality of values comprises a plurality of different RV values, each different RV value corresponding to a different transmission in the plurality of transmissions.
15. The method of claim 14 , further comprising determining:
a first set of different NDI values from the plurality of different NDI values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots;
a second set of different NDI values from the plurality of different NDI values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots;
a third set of different RV values from the plurality of different RV values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots; and
a fourth set of different RV values from the plurality of different RV values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots.
16. The method of claim 15 , wherein:
determining the first set of different NDI values and the second set of different NDI values depends on bit positions of the different NDI values of the plurality of different NDI values within the NDI field, and
the bit positions of the different NDI values within the NDI field are based on the first set of transmissions of the plurality of transmissions that collide with the corresponding second set of transmissions.
17. The method of claim 16 , wherein:
the bit positions, within the NDI field, of the different NDI values corresponding to the first set of transmissions of the plurality of transmissions occur after the bit positions, within the NDI field, of the different NDI values corresponding to the third set of transmissions of the plurality of transmissions,
the first set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the third set of transmissions of the plurality of transmissions, and
the second set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the first set of transmissions of the plurality of transmissions.
18. The method of claim 16 , wherein:
bit positions, within the NDI field, of the different NDI values corresponding to the first set of transmissions of the plurality of transmissions and the third set of transmissions of the plurality of transmissions occur in numerical order of the plurality of transmissions,
the first set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the third set of transmissions of the plurality of transmissions, and
the second set of different NDI values include the different NDI values within the bit positions of the NDI field corresponding to the first set of transmissions of the plurality of transmissions.
19. The method of claim 15 , wherein:
determining the third set of different RV values and the fourth set of different RV values depends on bit positions of the different RV values of the plurality of different RV values within the RV field, and
the bit positions of the different RV values within the RV field are based on the first set of transmissions of the plurality of transmissions that collide with the corresponding second set of transmissions.
20. The method of claim 19 , wherein:
the bit positions, within the RV field, of the different RV values corresponding to the first set of transmissions of the plurality of transmissions occur after the bit positions, within the RV field, of the different RV values corresponding to the third set of transmissions of the plurality of transmissions,
the third set of different RV values include the different RV values within the bit positions of the RV field corresponding to the third set of transmissions of the plurality of transmissions, and
the fourth set of different RV values include the different RV values within the bit positions of the RV field corresponding to the first set of transmissions of the plurality of transmissions.
21. The method of claim 19 , wherein:
bit positions, within the RV field, of the different RV values corresponding to the first set of transmissions of the plurality of transmissions and the third set of transmissions of the plurality of transmissions occur in numerical order of the plurality of transmissions,
the third set of different RV values include the different RV values within the bit positions of the RV field corresponding to the third set of transmissions of the plurality of transmissions, and
the fourth set of different RV values include the different RV values within the bit positions of the RV field corresponding to the first set of transmissions of the plurality of transmissions.
22. A user equipment (UE), comprising:
a memory comprising computer-executable instructions; and
one or more processors configured to execute the computer-executable instructions and cause the UE to:
receive a downlink control information (DCI) message scheduling a plurality of transmissions in a plurality of different slots, wherein:
a first set of transmissions of the plurality of transmissions in a first set of slots of the plurality of different slots collide with a corresponding second set of transmissions previously scheduled within the first set of slots,
the DCI message includes at least a first field comprising a first plurality of values,
each different value in the first plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the first plurality of values is equal to a number of transmissions in the plurality of transmissions; and
communicate a third set of transmissions of the plurality of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots.
23. The UE of claim 22 , wherein:
the DCI message includes at least a second field comprising a second plurality of values,
each different value in the second plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the second plurality of values is equal to the number of transmissions in the plurality of transmissions.
24. The UE of claim 23 , wherein:
the first field comprises a new data indicator (NDI) field and the second field comprises a redundancy version (RV) field,
the first plurality of values comprises a plurality of different NDI values, each different NDI value corresponding to a different transmission in the plurality of transmissions, and
the second plurality of values comprises a plurality of different RV values, each different RV value corresponding to a different transmission in the plurality of transmissions.
25. The UE of claim 24 , wherein the one or more processors are further configured to cause the UE to determine:
a first set of different NDI values from the plurality of different NDI values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots;
a second set of different NDI values from the plurality of different NDI values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots;
a third set of different RV values from the plurality of different RV values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots; and
a fourth set of different RV values from the plurality of different RV values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots.
26. The UE of claim 25 , wherein, in order to communicate the third set of transmissions, the one or more processors are further configured to cause the UE to:
use the first set of different NDI values and the third set of different RV values to communicate the third set of transmissions, and
discard the second set of different NDI values and the fourth set of different RV values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots.
27. A network entity, comprising:
a memory comprising computer-executable instructions; and
one or more processors configured to execute the computer-executable instructions and cause the network entity to:
transmit a downlink control information (DCI) message scheduling a plurality of transmissions in a plurality of different slots, wherein:
a first set of transmissions of the plurality of transmissions in a first set of slots of the plurality of different slots collide with a corresponding second set of transmissions previously scheduled within the first set of slots,
the DCI message includes at least a first field comprising a first plurality of values,
each different value in the first plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the first plurality of values is equal to a number of transmissions in the plurality of transmissions; and
communicate a third set of transmissions of the plurality of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots.
28. The network entity of claim 27 , wherein:
the DCI message includes at least a second field comprising a second plurality of values,
each different value in the second plurality of values corresponds to a different transmission in the plurality of transmissions, and
a number of values of the second plurality of values is equal to the number of transmissions in the plurality of transmissions.
29. The network entity of claim 28 , wherein:
the first field comprises a new data indicator (NDI) field and the second field comprises a redundancy version (RV) field,
the first plurality of values comprises a plurality of different NDI values, each different NDI value corresponding to a different transmission in the plurality of transmissions, and
the second plurality of values comprises a plurality of different RV values, each different RV value corresponding to a different transmission in the plurality of transmissions.
30. The network entity of claim 29 , where the one or more processors are further configured to cause the network entity to:
a first set of different NDI values from the plurality of different NDI values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots;
a second set of different NDI values from the plurality of different NDI values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots;
a third set of different RV values from the plurality of different RV values corresponding to the third set of transmissions that do not collide with the second set of transmissions previously scheduled within the first set of slots; and
a fourth set of different RV values from the plurality of different RV values corresponding to the first set of transmissions that collide with the second set of transmissions previously scheduled within the first set of slots.