Two-tone physical uplink shared channel for machine type communications
Embodiments of the present disclosure describe configuration and use of sub-physical resource block allocation for physical uplink shared channel and demodulation reference signals. Other embodiments may be described and claimed.
1. One or more non-transitory, computer-readable media having
instructions that, when executed by one or more processors, cause a device to:
receive an indication having capability information for a user equipment (UE);
construct, based on the capability information, a configuration message to configure the UE with one or more sub-physical resource block (PRB) configurations for a physical uplink shared channel (PUSCH) in even further enhanced machine type communication (efeMTC), wherein a first sub-PRB configuration of the one or more sub-PRB configurations is a 2 out of 3 subcarrier configuration, wherein the 2 out of 3 subcarrier configuration indicates 2 adjacent subcarriers out of 3 subcarriers are allocated for the PUSCH; and
cause the configuration message to be sent to the UE.
2. The one or more non-transitory, computer-readable media of claim 1 , wherein the indication of capability information is to indicate support for the 2 out of 3 subcarrier configuration and a 3-subcarrier configuration or a 6-subcarrier configuration.
3. The one or more non-transitory, computer-readable media of claim 1 , wherein the instructions, when executed, are further to cause the device to:
cause an allocation message to be sent to the UE to indicate 2 out of 3 allocated subcarriers for a PUSCH transmission; and
receive the PUSCH transmission from the UE on the 2 out of 3 allocated subcarriers with a 15 kHz subcarrier spacing.
4. The one or more non-transitory, computer-readable media of claim 1 , wherein the one or more sub-PRB configurations further includes a 3-subcarrier configuration or a 6-subcarrier configuration.
5. The one or more non-transitory, computer-readable media of claim 1 , wherein the first sub-PRB configuration allows for the 2 out of 3 allocated subcarriers with respect to non-overlapping 3-subcarrier sets across a PRB.
6. The one or more non-transitory, computer-readable media of claim 1 , wherein the instructions, when executed, further cause the device to:
generate and cause transmission of downlink control information that includes M bits in a subcarrier indication field to indicate a set of allocated subcarriers.
7. The one or more non-transitory, computer-readable media of claim 1 , wherein the instructions, when executed, further cause the device to indicate the set of allocated subcarriers based on the following table:
I sc
n sc
0-3
3I sc + {Y, Y + 1}
4-7
3(I sc − 4) + {0, 1, 2}
8-9
6(I sc − 8) + {0, 1, 2, 3, 4, 5},
wherein n sc is the set of allocated subcarriers, I sc is indicated by the M bits in the subcarrier indication field, and Y is 0 or 1.
8. The one or more non-transitory, computer-readable media of claim 1 , wherein allocation of 2 adjacent subcarriers out of 3 subcarriers is performed in a static manner, a semi-static manner by radio resource control (RRC) signaling, or a dynamic manner.
9. An apparatus comprising:
means for receiving a signal that includes an indication of a sub-physical resource block (PRB) allocation for a physical uplink shared channel (PUSCH) in even further enhanced machine type communication (efeMTC), wherein the sub-PRB allocation for the PUSCH is allocated based on a 2 out of 3 subcarrier configuration, wherein the 2 out of 3 subcarrier configuration indicates 2 adjacent subcarriers out of 3 subcarriers are allocated for the PUSCH; and
means for generating an uplink (UL) signal for transmission based at least in part on the indication of the sub-PRB allocation for the PUSCH.
10. The apparatus of claim 9 , wherein a PUSCH with 2 out of 3 allocated subcarriers is supported for the efeMTC.
11. The apparatus of claim 10 , wherein the PUSCH with 2 out of 3 allocated subcarriers is configured together with sub-PRB allocation with 3 or 6 subcarriers.
12. The apparatus of claim 9 , wherein the PUSCH with 2 out of 3 allocated subcarriers is configured separately from other sub-PRB allocations.
13. An apparatus configured to operate in a base station (BS), the apparatus comprising:
a radio front end configured to wirelessly communicate with a user equipment (UE); and
processor circuitry configured to:
receive, using the radio front end, an indication having capability information for the UE;
construct, based on the capability information, a configuration message to configure the UE with one or more sub-physical resource block (PRB) configurations for a physical uplink shared channel (PUSCH) in even further enhanced machine type communication (efeMTC), wherein a first sub-PRB configuration of the one or more sub-PRB configurations is a 2 out of 3 subcarrier configuration, wherein the 2 out of 3 subcarrier configuration indicates 2 adjacent subcarriers out of 3 subcarriers are allocated for the PUSCH; and
cause, using the radio front end, the configuration message to be sent to the UE.
14. The apparatus of claim 13 , wherein the indication of capability information is to indicate support for the 2 out of 3 subcarrier configuration and a 3-subcarrier configuration or a 6-subcarrier configuration.
15. The apparatus of claim 13 , wherein the processor circuitry is further configured to:
cause an allocation message to be sent to the UE to indicate 2 out of 3 allocated subcarriers for a PUSCH transmission; and
receive the PUSCH transmission from the UE on the 2 out of 3 allocated subcarriers with a 15 kHz subcarrier spacing.
16. The apparatus of claim 13 , wherein the one or more sub-PRB configurations further includes a 3-subcarrier configuration or a 6-subcarrier configuration.
17. The apparatus of claim 13 , wherein the first sub-PRB configuration allows for 2 out of 3 allocated subcarriers with respect to non-overlapping 3-subcarrier sets across a PRB.
18. The apparatus of claim 13 , wherein the processor circuitry is further configured to:
generate and cause transmission of downlink control information that includes M bits in a subcarrier indication field to indicate a set of allocated subcarriers.
19. The apparatus of claim 13 , wherein the processor circuitry is further configured to:
indicate the set of allocated subcarriers based on the following table:
I SC
n SC
0-3
3I SC + {Y,Y + 1}
4-7
3(I SC − 4) + {0,1,2}
8-9
6(I SC − 8) + {0,1,2,3,4,5}
wherein n sc is the set of allocated subcarriers, I sc is indicated by the M bits in the subcarrier indication field, and Y is 0 or 1.
20. The apparatus of claim 13 , wherein allocation of 2 adjacent subcarriers out of 3 subcarriers is performed in a static manner, a semi-static manner by radio resource control (RRC) signaling, or a dynamic manner.