Method and apparatus for SS block index and timing indication in wireless systems
Apparatuses and methods for synchronization signal (SS) block index and timing indication in wireless communication systems. A method of operating a user equipment (UE) includes receiving, from a base station (BS), sets of higher-layer configuration information. When configured for mobility measurement on SS and physical broadcast channel (PBCH) (SS/PBCH) blocks, the UE identifies, based on one of the sets of higher-layer configuration information, a first set of SS/PBCH blocks configured for the mobility measurement; and measures and reports mobility measurement quantities for the first set of SS/PBCH blocks. When configured for receiving a physical downlink shared channel (PDSCH), the UE identifies, based on another of the sets of higher-layer configuration information, a second set of SS/PBCH blocks configured for the UE; and receives the PDSCH with rate matching around a SS/PBCH block included in the second set of SS/PBCH blocks.
1. A user equipment (UE) comprising:
a transceiver configured to receive, from a base station (BS), sets of higher-layer configuration information;
a processor operably connected to the transceiver, the processor configured to:
when configured for mobility measurement on synchronization signal (SS) and physical broadcast channel (PBCH) (SS/PBCH) blocks:
identify, based on one of the sets of higher-layer configuration information, a first set of SS/PBCH blocks configured for the mobility measurement; and
measure and report, via the transceiver, mobility measurement quantities for the first set of SS/PBCH blocks; and
when configured for receiving a physical downlink shared channel (PDSCH):
identify, based on another of the sets of higher-layer configuration information, a second set of more than one SS/PBCH blocks configured for the UE, wherein the other set of higher-layer configuration information indicates the second set of more than one SS/PBCH blocks to rate match around, wherein the sets of higher layer configuration information for the second set of more than one SS/PBCH blocks are based on a bitmap, wherein each bit of the bitmap indicates whether a SS/PBCH block is transmitted or not, and wherein a length of the bitmap equals a maximum number of SS/PBCH blocks of a frequency band; and
receive, via the transceiver, the PDSCH with rate matching around a SS/PBCH block included in the second set of more than one SS/PBCH blocks.
2. The UE of claim 1 , wherein:
the UE is configured for the mobility measurement,
the processor is further configured to monitor for a SS/PBCH block measurement timing configuration (SMTC) duration, and
the processor is configured to measure and report, via the transceiver, the mobility measurement quantities for the first set of SS/PBCH blocks that overlap with the SMTC duration.
3. The UE of claim 1 , wherein the mobility measurement quantities comprise a SS reference signal received power (SS-RSRP) for a first subset of the first set of SS/PBCH blocks and a SS reference signal received quality (SS-RSRQ) for a second subset of the first set of SS/PBCH blocks.
4. The UE of claim 1 , wherein the sets of higher layer configuration information for the first set of SS/PBCH blocks are based on the bitmap.
5. The UE of claim 1 , wherein the processor is configured to perform rate matching of the PDSCH at data physical resource block (PRB) boundaries around a set of consecutive PRBs at least partially overlapping with an SS/PBCH block in orthogonal frequency-division multiplexing (OFDM) symbols containing the SS/PBCH block.
6. The UE of claim 1 , wherein the processor is configured to perform rate matching of the PDSCH around an entire bandwidth part (BWP) bandwidth in orthogonal frequency-division multiplexing (OFDM) symbols containing the SS/PBCH block.
7. The UE of claim 1 , wherein:
the one set of higher-layer configuration information includes a SS/PBCH block measurement timing configuration (SMTC) indicating a SS/PBCH block periodicity for the mobility measurement,
the other set of higher-layer configuration information indicates a SS/PBCH block periodicity of the second set of more than one SS/PBCH blocks to rate match around, and
the SS/PBCH block periodicity for the mobility measurement is separately configured from the SS/PBCH block periodicity of the second set of more than one SS/PBCH blocks to rate match around.
8. A base station (BS) comprising:
a processor configured to generate sets of higher-layer configuration information for a user equipment (UE); and
a transceiver operably connected to the processor, the transceiver configured to transmit, to the UE, the sets of higher-layer configuration information and receive, from the UE, reports based on the sets of higher-layer configuration information, wherein:
when configuring the UE for mobility measurement on synchronization signal (SS) and physical broadcast channel (PBCH) (SS/PBCH) blocks, the processor is configured to generate one of the sets of higher-layer configuration information to indicate a first set of SS/PBCH blocks configured for the mobility measurement for reporting of mobility measurement quantities for the first set of SS/PBCH blocks; and
when configuring the UE for receiving a physical downlink shared channel (PDSCH), the processor is configured to:
generate another of the sets of higher-layer configuration information to indicate a second set of more than one SS/PBCH blocks configured for the UE, wherein the other set of higher-layer configuration information indicates the second set of more than one SS/PBCH blocks to rate match around, wherein the sets of higher layer configuration information for the second set of more than one SS/PBCH blocks are based on a bitmap, wherein each bit of the bitmap indicates whether a SS/PBCH block is transmitted or not, and wherein a length of the bitmap equals a maximum number of SS/PBCH blocks of a frequency band; and
transmit, via the transceiver, the PDSCH with rate matching around a SS/PBCH block included in the second set of more than one SS/PBCH blocks.
9. The BS of claim 8 , wherein the mobility measurement quantities comprise a SS reference signal received power (SS-RSRP) for a first subset of the first set of SS/PBCH blocks and a SS reference signal received quality (SS-RSRQ) for a second subset of the first set of SS/PBCH blocks.
10. The BS of claim 8 , wherein the sets of higher layer configuration information for the first set of SS/PBCH blocks are based on the bitmap.
11. The BS of claim 8 , wherein the processor is configured to configure the UE for rate matching of the PDSCH at data physical resource block (PRB) boundaries around a set of consecutive PRBs at least partially overlapping with an SS/PBCH block in orthogonal frequency-division multiplexing (OFDM) symbols containing the SS/PBCH block.
12. The BS of claim 8 , wherein the processor is configured to configure the UE for rate matching of the PDSCH around an entire bandwidth part (BWP) bandwidth in orthogonal frequency-division multiplexing (OFDM) symbols containing the SS/PBCH block.
13. The BS of claim 8 , wherein:
the one set of higher-layer configuration information includes a SS/PBCH block measurement timing configuration (SMTC) indicating a SS/PBCH block periodicity for the mobility measurement,
the other set of higher-layer configuration information indicates a SS/PBCH block periodicity of the second set of more than one SS/PBCH blocks to rate match around, and
the SS/PBCH block periodicity for the mobility measurement is separately configured from the SS/PBCH block periodicity of the second set of more than one SS/PBCH blocks to rate match around.
14. A method of operating a user equipment (UE), the method comprising:
receiving, from a base station (BS), sets of higher-layer configuration information;
based on identifying that the UE is configured for mobility measurement on synchronization signal (SS) and physical broadcast channel (PBCH) (SS/PBCH) blocks:
identifying, based on one of the sets of higher-layer configuration information, a first set of SS/PBCH blocks configured for the mobility measurement; and
measuring and reporting mobility measurement quantities for the first set of SS/PBCH blocks; and
based on identifying that the UE is configured for receiving a physical downlink shared channel (PDSCH):
identifying, based on another of the sets of higher-layer configuration information, a second set of more than one SS/PBCH blocks configured for the UE, wherein the other set of higher-layer configuration information indicates the second set of more than one SS/PBCH blocks to rate match around, wherein the sets of higher layer configuration information for the second set of more than one SS/PBCH blocks are based on a bitmap, wherein each bit of the bitmap indicates whether a SS/PBCH block is transmitted or not, and wherein a length of the bitmap equals a maximum number of SS/PBCH blocks of a frequency band; and
receiving the PDSCH with rate matching around a SS/PBCH block included in the second set of more than one SS/PBCH blocks.
15. The method of claim 14 , wherein the UE is configured for the mobility measurement, and measuring and reporting the mobility measurement quantities comprises:
monitoring for a SS/PBCH block measurement timing configuration (SMTC) duration; and
measuring and reporting the mobility measurement quantities for the first set of SS/PBCH blocks that overlap with the SMTC duration.
16. The method of claim 14 , wherein the mobility measurement quantities comprise a SS reference signal received power (SS-RSRP) for a first subset of the first set of SS/PBCH blocks and a SS reference signal received quality (SS-RSRQ) for a second subset of the first set of SS/PBCH blocks.
17. The method of claim 14 , wherein the sets of higher layer configuration information for the first set of SS/PBCH blocks are based on the bitmap.
18. The method of claim 14 , further comprising performing rate matching of the PDSCH at data physical resource block (PRB) boundaries around a set of consecutive PRBs at least partially overlapping with an SS/PBCH block in orthogonal frequency-division multiplexing (OFDM) symbols containing the SS/PBCH block.
19. The method of claim 14 , further comprising performing rate matching of the PDSCH around an entire bandwidth part (BWP) bandwidth in orthogonal frequency-division multiplexing (OFDM) symbols containing the SS/PBCH block.
20. The method of claim 14 , wherein:
the one set of higher-layer configuration information includes a SS/PBCH block measurement timing configuration (SMTC) indicating a SS/PBCH block periodicity for the mobility measurement,
the other set of higher-layer configuration information indicates a SS/PBCH block periodicity of the second set of more than one SS/PBCH blocks to rate match around, and
the SS/PBCH block periodicity for the mobility measurement is separately configured from the SS/PBCH block periodicity of the second set of more than one SS/PBCH blocks to rate match around.