Per-SSB beam switching for neighbor cell measurement in a synchronized network
Certain aspects of the present disclosure provide techniques for receive beam switching for neighbor cell measurement. A method that may be performed by a user equipment (UE) includes determining a first receive beam of a plurality of receive beams to use for reception during a first synchronization signal block (SSB) duration within a synchronization signal block set (SSBS) duration. The method includes determining a second receive beam of the plurality of receive beams to use for reception during a second SSB duration within the SSBS duration. The UE may measure one or more first signals transmitted by a serving cell and/or one or more neighbor cells with the first receive beam during the first SSB duration and measure one or more second signals transmitted by the serving cell and/or the one or more neighbor cells with the second receive beam during the second SSB duration.
1. A method for wireless communication by a user equipment (UE), the method comprising:
using a first receive beam of a plurality of receive beams for reception during a first synchronization signal block (SSB) duration within a synchronization signal block set (SSBS) duration;
determining a time offset for switching to a second receive beam of the plurality of receive beams for reception during a second SSB duration within the SSBS duration such that, during each of the first SSB duration and the second SSB duration, a secondary synchronization signal (SSS) from synchronized SSBs of a serving cell and at least one neighbor cell of one or more neighbor cells is measured;
measuring one or more first signals transmitted by at least one of the serving cell, one or more neighbor cells, or a combination thereof, with the first receive beam during the first SSB duration, wherein the one or more first signals includes the SSS;
switching to the second receive beam of the plurality of receive beams for reception during the second SSB duration within the SSBS duration; and
measuring one or more second signals transmitted by at least one of the serving cell, the one or more neighbor cells, or the combination thereof, with the second receive beam during the second SSB duration, wherein the one or more second signals includes the SSS.
2. The method of claim 1 , wherein switching to the second receive beam is at an SSB boundary between the first SSB duration and the second SSB duration.
3. The method of claim 1 , further comprising sending one or more measurement reports providing results of measuring the one or more first signals and the one or more second signals.
4. The method of claim 1 , wherein the one or more first signals and the one or more second signals are transmitted by a combination of the serving cell and at least one neighbor cell of the one or more neighbor cells.
5. The method of claim 1 , wherein determining the time offset comprises determining a maximum time offset based, at least in part, on a timing offset between the serving cell and a neighbor cell of the one or more neighbor cells having a largest offset with the serving cell and further based on a propagation delay between the serving cell and the neighbor cell.
6. The method of claim 1 , wherein determining the time offset comprises determining the time offset based, at least in part, on a configured subcarrier spacing (SCS).
7. The method of claim 1 , wherein determining the time offset comprises:
determining a maximum time offset between the serving cell and a neighbor cell of the one or more neighbor cells having a largest offset with the serving cell;
determining a symbol duration based on a configured subcarrier spacing (SCS); and
determining a number of symbols for the time offset to be greater than a number of symbols in the maximum time offset between the serving cell and the neighbor cell.
8. An apparatus for wireless communication, the apparatus comprising:
memory storing computer executable code; and
at least one processor configured to execute the computer executable code and cause the apparatus to:
use a first receive beam of a plurality of receive beams for reception during a first synchronization signal block (SSB) duration within a synchronization signal block set (SSBS) duration;
determine a time offset for switching to a second receive beam of the plurality of receive beams for reception during a second SSB duration within the SSBS duration such that, during each of the first SSB duration and the second SSB duration, a secondary synchronization signal (SSS) from synchronized SSBs of a serving cell and at least one neighbor cell of one or more neighbor cells is measured;
measure one or more first signals transmitted by at least one of the serving cell, one or more neighbor cells, or a combination thereof, with the first receive beam during the first SSB duration, wherein the one or more first signals includes the SSS;
switch to the second receive beam of the plurality of receive beams for reception during the second SSB duration within the SSBS duration; and
measure one or more second signals transmitted by at least one of the serving cell, the one or more neighbor cells, or the combination thereof, with the second receive beam during the second SSB duration, wherein the one or more second signals includes the SSS.
9. The apparatus of claim 8 , wherein the at least one processor is configured to cause the apparatus to switch to the second receive beam at a SSB boundary between the first SSB duration and the second SSB duration.
10. The apparatus of claim 8 , wherein the at least one processor is further configured to cause the apparatus to send one or more measurement reports providing results of measuring the one or more first signals and the one or more second signals.
11. The apparatus of claim 8 , wherein the one or more first signals and the one or more second signals are transmitted by a combination of the serving cell and at least one neighbor cell of the one or more neighbor cells.
12. The apparatus of claim 8 , wherein the at least one processor being configured to cause the apparatus to determine the time offset comprises the at least one processor being configured to determine a maximum time offset based, at least in part, on a timing offset between the serving cell and a neighbor cell of the one or more neighbor cells having a largest offset with the serving cell and further based on a propagation delay between the serving cell and the neighbor cell.
13. The apparatus of claim 8 , wherein the at least one processor being configured to cause the apparatus to determine the time offset comprises the at least one processor being configured to determine the time offset based, at least in part, on a configured subcarrier spacing (SCS).
14. The apparatus of claim 8 , wherein the at least one processor being configured to cause the apparatus to determine the time offset comprises the at least one processor being configured to:
determine a maximum time offset between the serving cell and a neighbor cell of the one or more neighbor cells having a largest offset with the serving cell;
determine a symbol duration based on a configured subcarrier spacing (SCS); and
determine a number of symbols for the time offset to be greater than a number of symbols in the maximum time offset between the serving cell and the neighbor cell.
15. An apparatus for wireless communication, the apparatus comprising:
means for using a first receive beam of a plurality of receive beams for reception during a first synchronization signal block (SSB) duration within a synchronization signal block set (SSBS) duration;
means for determining a time offset for switching to a second receive beam of the plurality of receive beams for reception during a second SSB duration within the SSBS duration such that, during each of the first SSB duration and the second SSB duration, a secondary synchronization signal (SSS) from synchronized SSBs of a serving cell and at least one neighbor cell of one or more neighbor cells is measured;
means for measuring one or more first signals transmitted by at least one of the serving cell, one or more neighbor cells, or a combination thereof, with the first receive beam during the first SSB duration, wherein the one or more first signals includes the SSS;
means for switching to the second receive beam of the plurality of receive beams for reception during the second SSB duration within the SSBS duration; and
means for measuring one or more second signals transmitted by at least one of the serving cell, the one or more neighbor cells, or the combination thereof, with the second receive beam during the second SSB duration, wherein the one or more second signals includes the SSS.
16. The apparatus of claim 15 , wherein means for switching to the second receive beam comprises means for switching to the second receive beam at a SSB boundary between the first SSB duration and the second SSB duration.
17. The apparatus of claim 15 , further comprising means for sending one or more measurement reports providing results of measuring the one or more first signals and the one or more second signals.
18. The apparatus of claim 15 , wherein the one or more first signals and the one or more second signals are transmitted by a combination of the serving cell and at least one neighbor cell of the one or more neighbor cells.
19. The apparatus of claim 15 , wherein means for determining the time offset comprises means for determining a maximum time offset based, at least in part, on a timing offset between the serving cell and a neighbor cell of the one or more neighbor cells having a largest offset with the serving cell and further based on a propagation delay between the serving cell and the neighbor cell.
20. The apparatus of claim 15 , wherein means for determining the time offset comprises means for determining the time offset based, at least in part, on a configured subcarrier spacing (SCS).
21. The apparatus of claim 15 , wherein means for determining the time offset comprises:
means for determining a maximum time offset between the serving cell and a neighbor cell of the one or more neighbor cells having a largest offset with the serving cell;
means for determining a symbol duration based on a configured subcarrier spacing (SCS); and
means for determining a number of symbols for the time offset to be greater than a number of symbols in the maximum time offset between the serving cell and the neighbor cell.
22. A non-transitory computer readable medium storing computer executable code thereon, the computer executable code comprising:
code for using a first receive beam of a plurality of receive beams for reception during a first synchronization signal block (SSB) duration within a synchronization signal block set (SSBS) duration;
code for determining a time offset for switching to a second receive beam of the plurality of receive beams for reception during a second SSB duration within the SSBS duration such that, during each of the first SSB duration and the second SSB duration, a secondary synchronization signal (SSS) from synchronized SSBs of a serving cell and at least one neighbor cell of one or more neighbor cells is measured;
code for measuring one or more first signals transmitted by at least one of the serving cell, one or more neighbor cells, or a combination thereof, with the first receive beam during the first SSB duration, wherein the one or more first signals includes the SSS;
code for switching to the second receive beam of the plurality of receive beams for reception during the second SSB duration within the SSBS duration; and
code for measuring one or more second signals transmitted by at least one of the serving cell, the one or more neighbor cells, or the combination thereof, with the second receive beam during the second SSB duration, wherein the one or more second signals includes the SSS.
23. The non-transitory computer readable medium of claim 22 , wherein the code for switching to the second receive beam comprises code for switching to the second receive beam at a SSB boundary between the first SSB duration and the second SSB duration.