Time-domain resource allocation for configured grant transmissions in new radio systems
The present application relates to wireless devices and components including apparatus, systems, and methods for time-domain resource allocation for configured grant transmissions in New Radio (NR) systems operating on unlicensed spectrum. In some embodiments, a user equipment may be configured with periodicity, bitmap information, duration information, or slot-offset information to facilitate the time-domain resource allocation.
1. One or more non-transitory, computer-readable storage-media having instructions that, when executed, cause processing circuitry to:
process one or more configuration messages from a base station to determine a configured grant (CG) periodicity and a bitmap that is to indicate a plurality of time-domain resources of an unlicensed spectrum that are available for CG uplink transmissions to the base station, wherein the CG periodicity defines a resource allocation period (RAP) with a first length in time resource units and the bitmap includes a second length in the time resource units that is smaller than the first length;
determine availability of a first number of consecutive time-domain resources for CG uplink transmissions in a first part of the RAP based on a respective first number of values of the bitmap, wherein the first number of values of the bitmap include all values of the bitmap; and
encode, based on the CG periodicity and the bitmap, a CG uplink transmission to be transmitted to the base station in one or more time-domain resources of the first number of consecutive time-domain resources.
2. The one or more non-transitory, computer-readable storage-media of claim 1 , wherein the instructions, when executed, further cause the processing circuitry to: determine availability of time-domain resources for CG uplink transmissions based on all values of the bitmap repeated over time independent of the CG periodicity.
3. The one or more non-transitory, computer-readable storage-media of claim 1 , wherein the instructions, when executed, further cause the processing circuitry to:
determine availability of a second number of time-domain resources for CG uplink transmissions in a second part of the RAP based on one or more values at a beginning of the bitmap; and
further encode the CG uplink transmission in at least one time-domain resource of the second number of time-domain resources.
4. The one or more non-transitory, computer-readable storage-media of claim 1 , wherein the instructions, when executed, further cause the processing circuitry to:
discard a second number of time-domain resources for CG uplink transmissions in a second part of the RAP.
5. The one or more non-transitory, computer-readable storage-media of claim 1 , wherein the instructions, when executed, further cause the processing circuitry to:
determine availability of a first plurality of RAPs of the time-domain resources for CG uplink transmissions based on a second plurality of iterations of the bitmap.
6. The one or more non-transitory, computer-readable storage-media of claim 5 , wherein the second plurality of iterations are circular-shifted versions of the bitmap based on a corresponding plurality of offsets.
7. The one or more non-transitory, computer-readable storage-media of claim 1 , wherein the instructions, when executed, further cause the processing circuitry to:
receive an index in radio resource control signal or downlink control information; and
access a bitmap allocation configuration table based on the index to determine the bitmap.
8. An apparatus comprising:
protocol processing circuitry to:
identify bitmap information that includes information corresponding to a bitmap having a plurality of values that indicates whether a corresponding plurality of consecutive time-domain resources of an unlicensed spectrum are available for configured grant uplink transmissions from a user equipment (UE) to a base station, wherein the bitmap information is to configure the UE with a bitmap configuration table that includes one or more cyclic shifts to configure the plurality of consecutive time-domain resources for configured grant uplink transmissions;
encode the bitmap information in a radio resource control (RRC) message; and
encode an index to the bitmap configuration table in RRC signaling or downlink control information; and
interface circuitry, coupled with the protocol processing circuitry, to enable communication.
9. The apparatus of claim 8 , wherein the bitmap configuration table further includes one or more bitmaps or granularities.
10. The apparatus of claim 8 , wherein the bitmap information includes information corresponding to a plurality of bitmaps and the protocol processing circuitry is further to: process configured grant uplink control information to determine a first bitmap selected by the UE from the plurality of bitmaps that is to be used by the UE to determine time-domain resources available for configured grant uplink transmissions.
11. A method comprising:
processing one or more configuration messages from a base station to determine a configured grant (CG) periodicity and a bitmap that is to indicate a plurality of time-domain resources of an unlicensed spectrum that are available for CG uplink transmissions to the base station, wherein the CG periodicity defines a resource allocation period (RAP) with a first length in time resource units and the bitmap includes a second length in the time resource units that is smaller than the first length;
determining availability of a first number of consecutive time-domain resources for CG uplink transmissions in a first part of the RAP based on a respective first number of values of the bitmap, wherein the first number of values of the bitmap include all values of the bitmap; and
encoding, based on the CG periodicity and the bitmap, a CG uplink transmission to be transmitted to the base station in one or more time-domain resources of the first number of consecutive time-domain resources.
12. The method of claim 11 , further comprising:
determining availability of time-domain resources for CG uplink transmissions based on all values of the bitmap repeated over time independent of the CG periodicity.
13. The method of claim 12 , further comprising:
determining availability of a second number of time-domain resources for CG uplink transmissions in a second part of the RAP based on one or more values at a beginning of the bitmap; and
further encoding the CG uplink transmission in at least one time-domain resource of the second number of time-domain resources.
14. The method of claim 12 , further comprising:
discarding a second number of time-domain resources for CG uplink transmissions in a second part of the RAP.
15. The method of claim 12 , further comprising:
determining availability of a first plurality of RAPs of the time-domain resources for CG uplink transmissions based on a second plurality of iterations of the bitmap.