Configurability and signaling for half-tone shift
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, a second circuitry, and a third circuitry. The first circuitry may be operable to process a configuration transmission carrying a half-tone shifting indicator. The second circuitry may be operable to select one or more subcarrier frequencies for Uplink (UL) transmission based on the half-tone shifting indicator. The third circuitry may be operable to generate a UL transmission for the one or more subcarrier frequencies. The half-tone shifting indicator may have a first value indicating application of a half-subcarrier offset, and a second value indicating no application of the half-subcarrier offset.
1. A User Equipment (UE) operable to communicate with a base station on a wireless network, comprising:
one or more processors configured to:
process a configuration transmission carrying a half-tone shifting indicator, wherein the configuration transmission is by a higher layer signaling;
select one or more subcarrier frequencies for Uplink (UL) transmission based on the half-tone shifting indicator; and
generate a UL transmission for the one or more subcarrier frequencies, wherein the half-tone shifting indicator indicates whether to apply a half-subcarrier offset or not; and
an interface for sending the UL transmission to a transmission circuitry and for receiving downlink (DL) transmissions from a receiving circuitry.
2. The UE of claim 1 , wherein the one or more processors are further configured to:
determine a subcarrier spacing and a magnitude of the half-tone shift based on the configuration transmission.
3. The UE of claim 2 , wherein the one or more processors are further configured to:
determine that the subcarrier spacing is 15 kilohertz (kHz) and the magnitude of the half-tone shift is 7.5 kHz.
4. The UE of claim 1 , wherein the one or more processors are further configured to:
determine a magnitude of the half-tone shift based on the one or more subcarrier frequencies.
5. The UE of claim 1 ,
wherein the configuration transmission is a Radio Resource Control (RRC) signaling transmission.
6. The UE of claim 1 ,
wherein the UL transmission comprises at least one of: a Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform or a Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform.
7. The UE of claim 1 , wherein the one or more processors are further configured to:
generate a Radio Frequency (RF) shifting indicator for an RF circuitry based on the half-tone shifting indicator.
8. A method of operating a user equipment (UE), comprising:
processing a configuration transmission carrying a half-tone shifting indicator, wherein the configuration transmission is by a higher layer signaling;
selecting one or more subcarrier frequencies for Uplink (UL) transmission based on the half-tone shifting indicator; and
generating a UL transmission for the one or more subcarrier frequencies, wherein the half-tone shifting indicator indicates whether to apply a half-subcarrier offset or not.
9. The method of claim 8 , further comprising:
determining a subcarrier spacing and a magnitude of the half-tone shift based on the configuration transmission.
10. The method of claim 9 , further comprising:
determining that the subcarrier spacing is 15 kilohertz (kHz) and the magnitude of the half-tone shift is 7.5 kHz.
11. The method of claim 8 , further comprising:
determining a magnitude of the half-tone shift based on the one or more subcarrier frequencies.
12. The method of claim 8 ,
wherein the configuration transmission is a Radio Resource Control (RRC) signaling transmission.
13. The method of claim 8 ,
wherein the UL transmission comprises at least one of: a Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform or a Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform.
14. The method of claim 8 , further comprising:
generating a Radio Frequency (RF) shifting indicator for an RF circuitry based on the half-tone shifting indicator.
15. A base station comprising:
a transceiver configured to enable wireless communication with a user equipment (UE); and
a processor, communicatively coupled to the transceiver, and configured to:
generate a configuration transmission carrying a half-tone shifting indicator, wherein the half-tone shifting indicator corresponds to one or more subcarrier frequencies;
transmit, using the transceiver, the configuration transmission to the UE via a higher layer signaling; and
receive, using the transceiver, an Uplink (UL) transmission through the one or more subcarrier frequencies,
wherein the half-tone shifting indicator indicates whether to apply a half-subcarrier offset or not.
16. The base station of claim 15 , wherein the configuration transmission indicates a subcarrier spacing and a magnitude of the half-tone shift.
17. The base station of claim 16 , wherein the subcarrier spacing is 15 kilohertz (kHz) and the magnitude of the half-tone shift is 7.5 kHz.
18. The base station of claim 15 , wherein the configuration transmission is a Radio Resource Control (RRC) signaling transmission.
19. The base station of claim 15 , wherein the UL transmission comprises at least one of: a Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform or a Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform.
20. The base station of claim 15 , wherein the higher layer signaling includes a Minimum System Information (MSI) transmission or a Remaining MSI (RMSI) transmission, and wherein the MSI transmission or the RMSI transmission indicates whether or not to apply the half-subcarrier offset.