Channel state information report for phase tracking reference signal port selection
Described is an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes). The second circuitry may be operable to generate an Uplink (UL) transmission carrying a Layer Indicator (LI) based at least on a number of PT-RS Antenna Ports (APs) associated with the PT-RSes.
1. A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a User Equipment (UE), cause the UE to perform operations comprising:
processing a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signals (PT-RSes); and
generating an Uplink (UL) transmission carrying one or more Layer Indicators (LIs) together with an associated Channel State Information (CSI) based at least on a number of PT-RS Antenna Ports (APs) associated with the one or more PT-RSes, wherein a PT-RS of the one or more PT-RSes is associated with an AP of a Demodulation Reference Signal (DMRS) AP group, wherein a number of the one or more LIs is equal to the number of PT-RS APs, and the number of the one or more LIs is jointly encoded with one or more of a CSI Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
2. The non-transitory computer-readable medium of claim 1 , wherein the UL transmission comprises a Physical Uplink Control Channel (PUCCH) transmission.
3. The non-transitory computer-readable medium of claim 2 , wherein the one or more LIs is reported with the associated CSI via a short PUCCH transmission or a long PUCCH transmission.
4. The non-transitory computer-readable medium of claim 1 , wherein the one or more LIs has a varying size dependent on a value of the RI.
5. The non-transitory computer-readable medium of claim 1 , wherein the number of PT-RS APs is one.
6. The non-transitory computer-readable medium of claim 1 , wherein a first LI of the number of the one or more LIs is encoded with at least a padding to have a first encoded size equal to a second encoded size for a second LI of the number of the one or more LIs.
7. The non-transitory computer-readable medium of claim 1 , wherein the UL transmission comprises a Physical Uplink Shared Channel (PUSCH) transmission, and wherein the associated CSI comprises a first Channel Quality Indicator (CQI) and a second CQI.
8. The non-transitory computer-readable medium of claim 7 , wherein the number of PT-RS APs is one, the one or more LIs is jointly encoded with one of the CRI, the RI, the first CQI, the PMI, or the second CQI.
9. The non-transitory computer-readable medium of claim 7 , wherein the number of the one or more LIs are jointly encoded with one of the CRI, the RI, the first CQI, the PMI, or the second CQI.
10. A User Equipment (UE), comprising:
a memory; and
one or more processors communicatively coupled to the memory, and configured to:
process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes); and
generate an Uplink (UL) transmission carrying one or more Layer Indicators (LIs) together with an associated Channel State Information (CSI) based at least on a number of PT-RS Antenna Ports (APs) associated with the one or more PT-RSes, wherein a PT-RS of the one or more PT-RSes is associated with an AP of a Demodulation Reference Signal (DMRS) AP group, wherein a number of the one or more LIs is equal to the number of PT-RS APs, and the number of the one or more LIs is jointly encoded with one or more of a CSI Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
11. The UE of claim 10 , wherein the UL transmission comprises a Physical Uplink Control Channel (PUCCH) transmission.
12. The UE of claim 11 , wherein the one or more LIs is reported with the associated CSI via a short PUCCH transmission or a long PUCCH transmission.
13. The UE of claim 10 , wherein the one or more LIs has a varying size dependent on a value of the RI.
14. The UE of claim 10 , wherein the number of PT-RS APs is one.
15. The UE of claim 10 , wherein the UL transmission comprises a Physical Uplink Shared Channel (PUSCH) transmission, and wherein the associated CSI comprises a first Channel Quality Indicator (CQI) and a second CQI.
16. The UE of claim 15 , wherein, when the number of PT-RS APs is one, the one or more LIs is jointly encoded with one of the CRI, the RI, the first CQI, the PMI, or the second CQI.
17. A method performed by a User Equipment (UE), comprising:
processing a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes); and
generating an Uplink (UL) transmission carrying one or more Layer Indicators (LIs) together with an associated Channel State Information (CSI) based at least on a number of PT-RS Antenna Ports (APs) associated with the one or more PT-RSes, wherein a PT-RS of the one or more PT-RSes is associated with an AP of a Demodulation Reference Signal (DMRS) AP group, wherein a number of the one or more LIs is equal to the number of PT-RS APs, and the number of the one or more Lis is jointly encoded with one or more of a CSI Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
18. The method of claim 17 , wherein the UL transmission comprises a Physical Uplink Control Channel (PUCCH) transmission, and wherein the one or more LIs is reported with the associated CSI via a short PUCCH transmission or a long PUCCH transmission.
19. The method of claim 17 , wherein the UL transmission comprises a Physical Uplink Shared Channel (PUSCH) transmission, and wherein the associated CSI comprises a first Channel Quality Indicator (CQI) and a second CQI.