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. An apparatus for a user equipment (UE) in a wireless network, the apparatus comprising:
one or more baseband processors to perform operations comprising:
receiving with beamforming, using one or more antenna panels of the UE, a plurality of instances of a reference signal comprising at least one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS), wherein the plurality of instances of the reference signal correspond to a plurality of receiver branches of the UE, each receiver branch of the plurality of receiver branches being associated with one or more beamformed instances of the reference signal;
for each receiver branch, measure a signal value based on the one or more respective instances of the reference signal, wherein the signal value corresponds to a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ);
determining, among a plurality of measured signal values corresponding to the plurality of receiver branches, a particular signal value that is not lower than any of the plurality of measured signal values; and
generating a report including the particular signal value; and
a radio frequency (RF) circuit to perform operations comprising transmitting the report to a base station.
2. The apparatus of claim 1 , wherein a receiver branch of the plurality of receiver branches is associated with one antenna panel of the one or more antenna panels.
3. The apparatus of claim 1 , wherein determining the particular signal value comprises determining a maximum value among the plurality of measured signal values.
4. The apparatus of claim 1 , wherein determining the particular signal value comprises:
selecting more than one value from a plurality of measured signal values, wherein any selected value is larger than any unselected value; and
averaging the selected values to determine the particular signal value.
5. The apparatus of claim 1 , wherein the reference signal comprises 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).
6. The apparatus of claim 5 , wherein the signal value measured for a receiver branch corresponds to one 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 beamformed instances of the reference signal.
7. An apparatus for a base station in a wireless network, the apparatus comprising:
one or more processors to perform operations comprising:
transmitting a plurality of instances of a reference signal to a user equipment (UE) in the wireless network, the plurality of instances received using a plurality of receiver beams of the UE, each receiver beam of the plurality of receiver beams generated using one or more antenna panels of a plurality of antenna panels of the UE, wherein the reference signal comprises one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS); and
receiving from the UE, a particular signal value corresponding to measurements by the UE of the plurality of instances of the reference signal, wherein the particular signal value corresponds to one of a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ), and
wherein the particular signal value is not lower than any signal value measured by the UE of the plurality of instances of the reference signal.
8. The apparatus of claim 7 , wherein the measurements by the UE of the plurality of instances of the reference signal correspond to a plurality of receiver branches of the UE, a receiver branch of the plurality of receiver branches being associated with one or more antenna panels of the plurality of antenna panels.
9. The apparatus of claim 8 , wherein each receiver branch of the plurality of receiver branches is associated with one or more instances of the reference signal.
10. The apparatus of claim 7 , wherein the particular signal value comprises one of:
a maximum value among signal values measured by the UE, or
average of a plurality of values selected from among the signal values measured by the UE, any selected value being larger than any unselected value.
11. The apparatus of claim 7 , wherein the reference signal comprises 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).
12. The apparatus of claim 11 , wherein the particular signal value corresponds to one 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 beamformed instances of the reference signal.
13. A method comprising:
receiving with beamforming, using one or more antenna panels of a user equipment (UE) in a wireless network, a plurality of instances of a reference signal comprising at least one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS), wherein the plurality of instances of the reference signal correspond to a plurality of receiver branches of the UE, each receiver branch of the plurality of receiver branches being associated with one or more beamformed instances of the reference signal;
for each receiver branch, measuring a signal value based on the one or more respective instances of the reference signal, wherein the signal value corresponds to a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ);
determining, among a plurality of measured signal values corresponding to the plurality of receiver branches, a particular signal value that is not lower than any of the plurality of measured signal values; and
transmitting a report including the particular signal value to a base station.
14. The method of claim 13 , wherein a receiver branch of the plurality of receiver branches is associated with one antenna panel of the one or more antenna panels.
15. The method of claim 13 , wherein determining the particular signal value comprises determining a maximum value among the plurality of measured signal values.
16. The method of claim 13 , wherein determining the particular signal value comprises:
selecting more than one value from a plurality of measured signal values, wherein any selected value is larger than any unselected value; and
averaging the selected values to determine the particular signal value.
17. The method of claim 13 , wherein the reference signal comprises 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).
18. The method of claim 17 , wherein the signal value measured for a receiver branch corresponds to one 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 beamformed instances of the reference signal.
19. A method comprising:
transmitting, using a base station in a wireless network, a plurality of instances of a reference signal to a user equipment (UE) in the wireless network, the plurality of instances received at the UE using a plurality of receiver beams of the UE, each receiver beam of the plurality of receiver beams generated using one or more antenna panels of a plurality of antenna panels of the UE, wherein the reference signal comprises one of a primary synchronization signal (PSS) or a secondary synchronization signal (SSS); and
receiving from the UE, a particular signal value corresponding to measurements by the UE of the plurality of instances of the reference signal, wherein the particular signal value corresponds to one of a synchronization signal-reference signal received power (SS-RSRP) or a synchronization signal-reference signal received quality (SS-RSRQ), and
wherein the particular signal value is not lower than any signal value measured by the UE of the plurality of instances of the reference signal.
20. The method of claim 19 , wherein the measurements by the UE of the plurality of instances of the reference signal correspond to a plurality of receiver branches of the UE, a receiver branch of the plurality of receiver branches being associated with one or more antenna panels of the plurality of antenna panels.
21. The method of claim 20 , wherein each receiver branch of the plurality of receiver branches is associated with one or more instances of the reference signal.
22. The method of claim 19 , wherein the particular signal value comprises one of:
a maximum value among signal values measured by the UE, or
average of a plurality of values selected from among the signal values measured by the UE, any selected value being larger than any unselected value.
23. The method of claim 19 , wherein the reference signal comprises 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).
24. The method of claim 23 , wherein the particular signal value corresponds to one 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 beamformed instances of the reference signal.