Signaling for resource allocation and scheduling in 5G-NR integrated access and backhaul
Embodiments of apparatus and methods for signaling for resource allocation and scheduling in 5G-NR integrated access and backhaul are generally described herein. In some embodiments, User Equipment configured for reporting a channel quality indicator (CQI) index in a channel state information (CSI) reference resource assumes a physical resource block (PRB) bundling size of two PRBs to derive the CQI index.
1. An apparatus comprising:
a processor, where the processor is configured to cause a user equipment (UE) to:
configure the UE for reporting channel state information (CSI) including a channel quality indicator (CQI) information;
process a CSI reference resource received from a next generation Node B (gNB);
perform a CQI calculation, wherein to perform the CQI calculation, the processor is configured to assume a physical resource block (PRB) bundling size of two PRBs in the CSI reference resource;
generate a report to report the CQI information based on the CQI calculation; and
generate signalling to transmit the report to the gNB.
2. The apparatus of claim 1 , wherein the processor is further configured to assume the PRB bundling size in the CSI reference resource to derive a precoding matrix indicator (PMI) and a rank indicator (RI) for reporting in the report.
3. The apparatus of claim 2 , wherein the processor is further configured to decode radio-resource control (RRC) signaling and configure the UE for CSI reporting and reporting the CQI information.
4. The apparatus of claim 3 , wherein the processor is configured to:
calculate the CQI for one or more CSI subbands based on an RRC configuration signalled by the gNB, and
use a predetermined number of contiguous PRBs for estimating channel measurements of a physical downlink shared channel (PDSCH) corresponding to the PRB bundling size to calculate a channel estimation error and generate the CQI.
5. The apparatus of claim 4 , wherein the processor is configured to decode the RRC signalling to determine a CSI subband size for calculation of the CQI.
6. The apparatus of claim 1 , wherein the processor is further configured to derive a CQI index for each CQI value to be reported.
7. The apparatus of claim 1 , wherein the report is generated to further include a rank indicator (RI), a precoding matrix indicator (PMI), and layer indicator (LI).
8. The apparatus of claim 1 , wherein the processor comprises a baseband processor.
9. A non-transitory computer-readable storage medium that stores instructions for execution by a processor of a user equipment (UE) to configure the UE for reporting channel state information (CSI) including a channel quality indicator (CQI) information, wherein the instructions are executable by the processor to:
process a CSI reference resource received from a next generation Node B (gNB);
perform a CQI calculation, wherein to perform the CQI calculation, the processor is configured to assume a physical resource block (PRB) bundling size of two PRBs in the CSI reference resource;
generate a report to report the CQI information based on the CQI calculation; and
encode the report for transmission to the gNB.
10. The computer-readable storage medium of claim 9 , wherein the instructions are further executable to assume the PRB bundling size in the CSI reference resource to derive a precoding matrix indicator (PMI) and a rank indicator (RI) for reporting in the report.
11. The computer-readable storage medium of claim 10 , wherein the instructions are further executable to decode radio-resource control (RRC) signaling and configure the UE for CSI reporting and reporting the CQI information.
12. The computer-readable storage medium of claim 11 , wherein the instructions are further executable to:
calculate the CQI for one or more CSI subbands based on an RRC configuration signalled by the gNB, and
use a predetermined number of contiguous PRBs for estimating channel measurements of a physical downlink shared channel (PDSCH) corresponding to the PRB bundling size to calculate a channel estimation error and generate the CQI.
13. The computer-readable storage medium of claim 12 , wherein the instructions are further executable to decode the RRC signalling to determine a CSI subband size for calculation of the CQI.
14. The computer-readable storage medium of claim 9 , wherein the instructions are further executable to derive a CQI index for each CQI value to be reported.
15. The computer-readable storage medium of claim 9 , wherein the report is generated to further include a rank indicator (RI), a precoding matrix indicator (PMI), and layer indicator (LI).
16. A user equipment (UE), the comprising:
wireless communication circuitry; and
one or more processors coupled to the wireless communication circuitry, wherein the one or more processors are configured to cause the UE to:
process a CSI reference resource received from a base station;
perform a CQI calculation, wherein deriving the CQI calculation includes assuming a physical resource block (PRB) bundling size of two PRBs in the CSI reference resource;
generate a report to report the CQI information based on the CQI calculation; and
encoding the report for transmission to the base station.
17. The UE of claim 16 , wherein the one or more processors are further configured to assume the PRB bundling size in the CSI reference resource to derive a precoding matrix indicator (PMI) and a rank indicator (RI) for reporting in the report.
18. The UE of claim 16 , wherein the one or more processors are further configured to derive a CQI index for each CQI value to be reported.
19. The UE of claim 16 , wherein the one or more processors are further configured to:
decode radio-resource control (RRC) signaling and configure the UE for CSI reporting and reporting the CQI calculation;
calculate the CQI for one or more CSI subbands based on an RRC configuration signalled by the base station; and
use a predetermined number of contiguous PRBs for estimating channel measurements of a physical downlink shared channel (PDSCH) corresponding to the PRB bundling size to calculate a channel estimation error and generate the CQI.
20. The UE of claim 19 , wherein the one or more processors are further configured to decode the RRC signalling to determine a CSI subband size for calculation of the CQI.