NAICS signaling for advanced LTE features
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a user equipment that receives a configuration with carrier aggregation. The apparatus may determine a first starting symbol for a PDSCH. In one aspect, the first starting symbol for the PDSCH may be determined based at least in part on a blind detection.
1. A method of wireless communication of a user equipment (UE), comprising:
receiving a configuration with carrier aggregation; and
determining a first starting symbol for a physical downlink shared channel (PDSCH), wherein the first starting symbol for the PDSCH is determined based on a blind detection, wherein the determining the first starting symbol for the PDSCH comprises:
performing blind detection of one or more PDSCH symbols on a per resource block basis in order to determine the first starting symbol.
2. The method of claim 1 , wherein the determining the first starting symbol for the PDSCH further comprises:
performing energy detection of an initial symbol if an uncertainty associated with a starting position for one or more scheduled UEs meets a threshold criteria.
3. The method of claim 1 , wherein the determining the first starting symbol for the PDSCH comprises:
determining the first starting symbol for the PDSCH without assistance of a physical control format indicator channel (PCFICH).
4. The method of claim 1 , wherein the determining the first starting symbol for the PDSCH comprises:
determining if an interference level associated with a resource block meets a threshold criteria; and
performing blind detection of a group of symbols in the resource block when it is determined that the interference level associated with the resource block meets the threshold criteria in order to determine the first starting symbol.
5. The method of claim 1 , further comprising:
receiving signaling indicating a same starting position for a group of non-legacy UEs.
6. The method of claim 5 , wherein the determining the first starting symbol for the PDSCH comprises:
identifying a first starting position for one or more legacy UEs; and
performing blind detection to differentiate the first starting symbol of the UE from a second starting symbol associated with the one or more legacy UEs based on the identified first starting position.
7. The method of claim 5 , wherein the determining the first starting symbol for the PDSCH comprises:
identifying a first starting position for one or more legacy UEs; and
perform interference cancellation to differentiate the first starting symbol of the UE from a second starting symbol associated with the one or more legacy UEs based on the identified first starting position.
8. The method of claim 1 , further comprising:
receiving information indicating the first starting symbol for the PDSCH, the first starting symbol being scheduled for at least one other UE that is a legacy UE or a non-legacy UE.
9. The method of claim 1 , further comprising:
receiving first information indicating the first starting symbol when the UE is associated with a coordinated multi-point (CoMP) transmission, the first information indicating that the first starting symbol may be a heterogeneous network (HetNet) symbol; and
receiving second information indicating the first starting symbol when the UE is associated with carrier aggregation (CA), the second information indicating dynamic point selection (DPS) for the first starting symbol, wherein the determining the first starting symbol for the PDSCH comprises:
performing blind detection on a group of symbols in order to determine the first starting symbol when the first information is received; and
performing a starting symbol determination procedure for one or more subframes in order to determine the first starting symbol when the second information is received.
10. An apparatus for wireless communication of a user equipment (UE), comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive a configuration with carrier aggregation; and
determine a first starting symbol for a physical downlink shared channel (PDSCH), wherein the first starting symbol for the PDSCH is determined based on a blind detection, wherein the at least one processor is configured to determine the first starting symbol for the PDSCH by:
performing blind detection of one or more PDSCH symbols on a per resource block basis in order to determine the first starting symbol.
11. The apparatus of claim 10 , wherein the at least one processor is configured to determine the first starting symbol for the PDSCH by:
performing energy detection of an initial symbol if an uncertainty associated with a starting position for one or more scheduled UEs meets a threshold criteria.
12. The apparatus of claim 10 , wherein the at least one processor is configured to determine the first starting symbol for the PDSCH by:
determining the first starting symbol for the PDSCH without assistance of a physical control format indicator channel (PCFICH).
13. The apparatus of claim 10 , wherein the at least one processor is configured to determine the first starting symbol for the PDSCH by:
determining if an interference level associated with a resource block meets a threshold criteria; and
performing blind detection of a group of symbols in the resource block when it is determined that the interference level associated with the resource block meets the threshold criteria in order to determine the first starting symbol.
14. The apparatus of claim 10 , wherein the at least one processor is further configured to:
receive signaling indicating a same starting position for a group of non-legacy UEs.
15. The apparatus of claim 14 , wherein the at least one processor is configured to determine the first starting symbol for the PDSCH by:
identifying a first starting position for one or more legacy UEs; and
performing blind detection to differentiate the first starting symbol of the UE from a second starting symbol associated with the one or more legacy UEs based on the identified first starting position.
16. The apparatus of claim 14 , wherein the at least one processor is configured to determine the first starting symbol for the PDSCH by:
identifying a first starting position for one or more legacy UEs; and
perform interference cancellation to differentiate the first starting symbol of the UE from a second starting symbol associated with the one or more legacy UEs based on the identified first starting position.
17. An apparatus for wireless communication of a user equipment (UE), comprising:
means for receiving a configuration with carrier aggregation; and
means for determining a first starting symbol for a physical downlink shared channel (PDSCH), wherein the first starting symbol for the PDSCH is determined based on a blind detection, wherein the means for determining the first starting symbol for the PDSCH is configured to:
perform blind detection of one or more PDSCH symbols on a per resource block basis in order to determine the first starting symbol.
18. A non-transitory computer-readable medium storing computer executable code of a user equipment (UE), comprising code to:
receive a configuration with carrier aggregation; and
determine a first starting symbol for a physical downlink shared channel (PDSCH), wherein the first starting symbol for the PDSCH is determined based on a blind detection, wherein the computer-readable medium further comprises code to:
performing blind detection of one or more PDSCH symbols on a per resource block basis in order to determine the first starting symbol.