Phase tracking reference signal indication in multi-user superposition transmission
Described is an apparatus of an Evolved Node-B (eNB) operable to communicate with a User Equipment (UE) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to determine a presence of a Phase Tracking Reference Signal (PT-RS) and a density of the PT-RS. The second circuitry may be operable to process the PT-RS. The second circuitry may also be operable to process a transmission in a Multi-User Superposition Transmission (MUST) operation in accordance with the PT-RS.
1. A User Equipment (UE) operable to communicate with a base station (BS) on a wireless network, comprising:
one or more processors to:
determine a presence of a Phase Tracking Reference Signal (PT-RS) and a density of the PT-RS, wherein at least one of the presence of the PT-RS or the density of the PT-RS is determined based at least in part on a Far-UE indicator;
process the PT-RS; and
process a transmission in a Multi-User Superposition Transmission (MUST) operation in accordance with the PT-RS, and
an interface for receiving the PT-RS and the transmission in the MUST operation from a receiving circuitry.
2. The UE of claim 1 ,
wherein the Far-UE indicator is carried by one of: a Downlink Control Information (DCI) transmission; or a higher-layer signaling transmission.
3. The UE of claim 1 ,
wherein the Far-UE indicator is jointly coded with a Modulation and Coding Scheme (MCS) indicator.
4. The UE of claim 3 ,
wherein the MCS indicator is carried by a Downlink Control Information (DCI) transmission.
5. The UE of claim 1 ,
wherein the Far-UE indicator is determined based upon a search space indicator.
6. The UE of claim 1 , wherein the one or more processors determines the Far-UE indicator based on an amplitude weight index carried by a Downlink Control Information (DCI) transmission.
7. Machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User Equipment (UE) operable to communicate with a base station (BS) on a wireless network to perform an operation comprising:
determine a presence of a Phase Tracking Reference Signal (PT-RS) and a density of the PT-RS, wherein at least one of the presence of the PT-RS or the density of the PT-RS is determined based at least in part on a Far-UE indicator;
process the PT-RS; and
process a transmission in a Multi-User Superposition Transmission (MUST) operation in accordance with the PT-RS.
8. The machine readable storage media of claim 7 ,
wherein the Far-UE indicator is carried by one of: a Downlink Control Information (DCI) transmission; or a higher-layer signaling transmission.
9. The machine readable storage media of claim 7 ,
wherein the Far-UE indicator is jointly coded with a Modulation and Coding Scheme (MCS) indicator.
10. The machine readable storage media of claim 9 ,
wherein the MCS indicator is carried by a Downlink Control Information (DCI) transmission.
11. The machine readable storage media of claim 7 ,
wherein the Far-UE indicator is determined based upon a search space indicator.
12. The machine readable storage media of claim 7 , wherein the one or more processors further perform the operation of determining the Far-UE indicator based on an amplitude weight index carried by a Downlink Control Information (DCI) transmission.
13. A base station (BS) operable to communicate with a User Equipment (UE) on a wireless network, comprising:
one or more processors to:
establish a use of a Phase Tracking Reference Signal (PT-RS) and a density of the PT-RS, wherein at least one of the use of the PT-RS or the density of the PT-RS is indicated at least in part by a Far-UE indicator;
generate the PT-RS; and
generate a transmission in a Multi-User Superposition Transmission (MUST) operation in accordance with the PT-RS, and
an interface for sending the PT-RS and the transmission in the MUST operation to a transmission circuitry.
14. The BS of claim 13 ,
wherein the Far-UE indicator is carried by one of: a Downlink Control Information (DCI) transmission; or a higher-layer signaling transmission.
15. The BS of claim 13 ,
wherein the Far-UE indicator is jointly coded with a Modulation and Coding Scheme (MCS) indicator.
16. The BS of claim 15 ,
wherein the MCS indicator is carried by a Downlink Control Information (DCI) transmission.
17. The BS of claim 13 ,
wherein the Far-UE indicator is indicated by a search space indicator.
18. The BS of claim 13 , wherein the one or more processors determines the Far-UE indicator based on an amplitude weight index carried by a Downlink Control Information (DCI) transmission.
19. Machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a base station (BS) operable to communicate with a User Equipment (UE) on a wireless network to perform an operation comprising:
establish a use of a Phase Tracking Reference Signal (PT-RS) and a density of the PT-RS, wherein at least one of the use of the PT-RS or the density of the PT-RS is indicated at least in part by a Far-UE indicator;
generate the PT-RS; and
generate a transmission in a Multi-User Superposition Transmission (MUST) operation in accordance with the PT-RS.
20. The machine readable storage media of claim 19 ,
wherein the Far-UE indicator is carried by one of: a Downlink Control Information (DCI) transmission; or a higher-layer signaling transmission.
21. The machine readable storage media of claim 19 ,
wherein the Far-UE indicator is jointly coded with a Modulation and Coding Scheme (MCS) indicator.
22. The machine readable storage media of claim 21 ,
wherein the MCS indicator is carried by a Downlink Control Information (DCI) transmission.
23. The machine readable storage media of claim 19 ,
wherein the Far-UE indicator is indicated by a search space indicator.
24. The machine readable storage media of claim 19 , wherein the one or more processors further perform the operation of determining the Far-UE indicator based on an amplitude weight index carried by a Downlink Control Information (DCI) transmission.