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 User Equipment (UE) operable to communicate with a base station on a wireless network, comprising:
one or more processors to:
process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signals (PT-RSes); and
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 carried in the processed DL transmission, wherein a PT-RS is associated with an Antenna Port (AP) of a Demodulation Reference Signal (DMRS) AP group and used to compensate for a phase shift caused by phase noise; and
an interface for receiving the DL transmission from a receiving circuitry and for sending the UL transmission to a transmission circuitry.
2. The UE of claim 1 ,
wherein the UL transmission is a Physical Uplink Control Channel (PUCCH) transmission.
3. The UE of claim 2 ,
wherein, when the number of PT-RS APs is one, the LI is jointly encoded with one or more of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
4. The UE of claim 2 ,
wherein a number of the LI is equal to the number of PT-RS APs.
5. The UE of claim 4 ,
wherein the LI is jointly encoded with one or more of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
6. The UE of claim 1 ,
wherein the UL transmission is a Physical Uplink Shared Channel (PUSCH) transmission.
7. The UE of claim 6 ,
wherein, when the number of PT-RS APs is one, the LI is jointly encoded with one of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a first Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), or a second CQI.
8. The UE of claim 6 ,
wherein a number of the LI is equal to the number of PT-RS APs; and
wherein the LI is jointly encoded with one of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a first Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), or a second CQI.
9. The UE of claim 1 , wherein the LI is encoded with a constant size, and encoded independently from encoding for other channel state information.
10. The UE of claim 9 , wherein the LI is independently encoded by 3 bits, with 000 representing layer 0, and 001 representing layer 1.
11. A non-transitory computer-readable medium having machine executable instructions that, when executed, cause one or more processors of a User Equipment (UE) operable to communicate with a base station on a wireless network to perform an operation comprising:
process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signals (PT-RSes); and
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 carried in the processed DL transmission, wherein a PT-RS is associated with an Antenna Port (AP) of a Demodulation Reference Signal (DMRS) AP group and used to compensate for a phase shift caused by phase noise.
12. The non-transitory computer-readable medium of claim 11 ,
wherein the UL transmission is a Physical Uplink Control Channel (PUCCH) transmission.
13. The non-transitory computer-readable medium of claim 12 ,
wherein, when the number of PT-RS APs is one, the LI is jointly encoded with one or more of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
14. The non-transitory computer-readable medium of claim 12 ,
wherein a number of the LI is equal to the number of PT-RS APs.
15. The non-transitory computer-readable medium of claim 14 ,
wherein the LI is jointly encoded with one or more of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
16. The non-transitory computer-readable medium of claim 11 ,
wherein the UL transmission is a Physical Uplink Shared Channel (PUSCH) transmission.
17. The non-transitory computer-readable medium of claim 16 ,
wherein, when the number of PT-RS APs is one, the LI is jointly encoded with one of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a first Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), or a second CQI.
18. The non-transitory computer-readable medium of claim 16 ,
wherein a number of the LI is equal to the number of PT-RS APs; and
wherein the LI is jointly encoded with one of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a first Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), or a second CQI.
19. A User Equipment (UE) device comprising a memory, one or more antennas, a wireless interface for allowing the UE device to communicate with another device, and one or more processors to:
process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signals (PT-RSes); and
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 carried in the processed DL transmission, wherein a PT-RS is associated with an Antenna Port (AP) of a Demodulation Reference Signal (DMRS) AP group and used to compensate for a phase shift caused by phase noise; and
an interface for receiving the DL transmission from a receiving circuitry and for sending the UL transmission to a transmission circuitry.
20. The UE device of claim 19 ,
wherein the UL transmission is a Physical Uplink Control Channel (PUCCH) transmission; and
wherein, when the number of PT-RS APs is one, the LI is jointly encoded with one or more of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
21. The UE device of claim 19 ,
wherein the UL transmission is a Physical Uplink Control Channel (PUCCH) transmission;
wherein a number of the LI is equal to the number of PT-RS APs; and
wherein the LI is jointly encoded with one or more of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a Precoder Matrix Indicator (PMI), or a Channel Quality Indicator (CQI).
22. The UE device of claim 19 ,
wherein the UL transmission is a Physical Uplink Shared Channel (PUSCH) transmission; and
wherein, when the number of PT-RS APs is one, the LI is jointly encoded with one of a CSI-RS Resource Indicator (CRI), a Rank Indicator (RI), a first Channel Quality Indicator (CQI), a Precoder Matrix Indicator (PMI), or a second CQI.