Beamformed measurement for new radio (NR)
Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for adequately measuring reference signals while a user equipment (UE) uses beamforming for optimal receiving. Embodiments describe how a UE may measure received-beamformed reference signals as well as how to determine a reported value while multiple beams are measured or a receiver diversity is in use by the UE. Other embodiments may be described and claimed.
1. One or more non-transitory computer-readable media comprising instructions to, upon execution of the instructions by one or more processors of a user equipment (UE), cause the UE to:
measure a plurality of reference signals that are receive-beamformed by a respective plurality of antenna panels corresponding to the UE;
determine a plurality of values corresponding to the plurality of measured reference signals;
select more than one value from a plurality of values corresponding to the plurality of measured reference signals, wherein any of the selected values is larger than any of the unselected values;
generate an averaged value based on the selected values; and
generate a baseband signal to report the averaged value.
2. The one or more non-transitory computer-readable media of claim 1 , wherein, upon execution, the instructions are to further cause the UE to:
measure a plurality of reference signals that are receive-beamformed by a respective plurality of antenna panels;
determine a plurality of values to respectively indicate the plurality of measured reference signals; and
generate a baseband signal to report the value based on a determination that the value is a maximum value among the determined plurality of values.
3. The one or more non-transitory computer-readable media of claim 1 , wherein, upon execution, the instructions are to further cause the UE to:
control a radio-frequency front end (RFFE) of the UE to form, based on the reference signal received by the antenna panel, the receive-beamformed reference signal.
4. The one or more non-transitory computer-readable media of claim 1 , wherein the value corresponds to a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ).
5. The one or more non-transitory computer-readable media of claim 4 , wherein the reference signal is a primary synchronization signal (PSS) or a secondary synchronization signal (SSS).
6. The one or more non-transitory computer-readable media of claim 1 , wherein the value corresponds to a channel-state information-reference signal received power (CSI-RSRP) or channel-state information-reference signal received quality (CSI-RSRQ).
7. The one or more non-transitory computer-readable media of claim 1 , wherein the reference signal is a synchronization signal (SS) or a channel-state information-reference signal (CSI-RS).
8. The one or more non-transitory computer-readable media of claim 7 , wherein the value corresponds to a reference signal-signal to noise plus interference ratio (RS-SINR) of the SS or the CSI-RS.
9. The one or more non-transitory computer-readable media of claim 7 , wherein the value corresponds to a reference signal strength indicator (RSSI) of the SS or the CSI-RS.
10. The one or more non-transitory computer-readable media of claim 1 , wherein the reference signal is
a new radio reference signal (NR-RS), and the value corresponds to a reference signal received power (RSRP), reference signal received quality (RSRQ), reference signal strength indicator (RSSI), or reference signal-signal to noise plus interference ratio (RS-SINR).
11. The one or more non-transitory computer-readable media of claim 1 , wherein the reference signal is a demodulation reference signal (DM-RS), phase tracking reference signal (PT-RS), or cell-specific reference signal (CRS).
12. The one or more non-transitory computer-readable media of claim 11 , wherein the value corresponds to a reference signal received power (RSRP), reference signal received quality (RSRQ), reference signal strength indicator (RSSI), or reference signal-signal to noise plus interference ratio (RS-SINR) of the reference signal.
13. The one or more non-transitory computer-readable media of claim 1 , wherein, upon execution, the instructions are to further cause the UE to:
measure a plurality of reference signals that are receive beamformed by a respective plurality of antenna panels;
generate an averaged value based on a plurality of values that respectively correspond to the plurality of measured reference signals; and
generate a report to include the averaged value.
14. One or more non-transitory computer-readable media comprising instructions to, upon execution of the instructions by one or more processors of an evolved NodeB (eNB), cause the eNB to:
transmit a plurality of reference signals to a user equipment (UE) to perform a measurement, wherein the plurality of reference signals include at least one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS), and wherein the plurality of reference signals are receive-beamformed by a respective plurality of antenna panels corresponding to the UE, each of the plurality of antenna panels including a plurality of receiver antennas and forming a receiver branch of the UE; and
process a signal, received from the UE, to determine a reported value to indicate a measurement of a receive-beamformed reference signal that is received by a receiver panel of the UE, wherein the reported value is a maximum value of a plurality of values determined by the UE corresponding to the plurality of reference signals, wherein the maximum value corresponds to a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ), and wherein each of the plurality of values corresponds to a respective receiver branch of the UE.
15. The one or more non-transitory computer-readable media of claim 14 , wherein the plurality of reference signals further includes at least one of a channel-state information-reference signal (CSI-RS), a new radio reference signal (NR-RS), a demodulation reference signal (DM-RS), a phase tracking reference signal (PT-RS), or a cell-specific reference signal (CRS).
16. An apparatus for a user equipment (UE), comprising:
one or more baseband processors to:
measure a plurality of reference signals that are receive-beamformed by a respective plurality of antenna panels corresponding to the UE, wherein each of the plurality of antenna panels includes a plurality of antennas forming a receiver branch of the UE, and wherein the plurality of reference signals include at least one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS); and
a central processing unit (CPU) coupled with the one or more baseband processors, the CPU to:
determine a plurality of values corresponding to the plurality of measured receive-beamformed reference signals, wherein each of the plurality of values corresponds to a respective receiver branch of the UE;
determine a maximum value of the plurality of values corresponding to the plurality of measured reference signals, wherein the maximum value corresponds to a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ); and
control the one or more baseband processors to generate a baseband signal to report the maximum value.
17. The apparatus of claim 16 , wherein individual receive beams are respectively receive-beamformed by individual antenna panels that are associated with individual receiver branches.
18. The apparatus of claim 16 , wherein the plurality of reference signals further include at least one of a channel-state information-reference signal (CSI-RS), a new radio reference signal (NR-RS), a demodulation reference signal (DM-RS), a phase tracking reference signal (PT-RS), or a cell-specific reference signal (CRS).
19. The apparatus of claim 18 , wherein the plurality of values correspond to measurements of reference signal received power (RSRP), reference signal received quality (RSRQ), reference signal strength indicator (RSSI), or reference signal-signal to noise plus interference ratio (RS-SINR) of individual receive beams.
20. The apparatus of claim 16 , further comprising: the plurality of antenna panels to:
receive the reference signal; and
form, based on the received reference signal, a plurality of receive beams.
21. The apparatus of claim 20 , wherein the plurality of receiver branches receive the plurality of receive beams.
22. An apparatus for baseband circuitry of an evolved NodeB (eNB), the apparatus comprising:
means for transmitting plurality of reference signals to a user equipment (UE) to perform a measurement, wherein the plurality of reference signals include at least one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS), and wherein the plurality of reference signals are receive-beamformed by a respective plurality of antenna panels corresponding to the UE, each of the plurality of antenna panels including a plurality of receiver antennas and forming a receiver branch of the UE; and
means for processing a signal, received from the UE, to determine a reported value to indicate a measurement of a receive-beamformed reference signal that is received by a receiver panel of the UE, wherein the reported value is a maximum value of a plurality of values determined by the UE corresponding to the plurality of reference signals, wherein the maximum value corresponds to a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ), and wherein each of the plurality of values corresponds to a respective receiver branch of the UE.
23. The apparatus of claim 22 , wherein the plurality of reference signals further includes at least one of a channel-state information-reference signal (CSI-RS), a new radio reference signal (NR-RS), a demodulation reference signal (DM-RS), a phase tracking reference signal (PT-RS), or a cell-specific reference signal (CRS).