Measurement configurations for reporting in multi-TRP communication systems
Methods and apparatuses for measurement configurations for reporting in multi-transmit-receive point (TRP) communication systems. A method for operating a user equipment (UE) includes receiving first information for a first set of frequency subbands for FSBM and receiving second information related to a CSI resource setting. The CSI resource setting includes a first CSI resource set and a second CSI resource set. The method further includes identifying, based on the first and second information, a first subset of frequency subbands from the first set of frequency subbands for the first CSI resource set and a second subset of frequency subbands from the first set of frequency subbands for the second CSI resource set. The method further includes determining, based on the identification, one or more first RS resources from the first CSI resource set and one or more second RS resources from the second CSI resource set for FSBR.
1 . A user equipment (UE), comprising:
a transceiver configured to:
receive first information for a first set of frequency subbands for frequency selective beam management (FSBM);
receive second information related to a channel state information (CSI) resource setting; and
receive third information for the first set of frequency subbands, wherein:
the third information indicates at least one of:
a subband size in a number of physical resource blocks (PRBs); and
a total number of frequency subbands in the first set,
the CSI resource setting includes a first CSI resource set and a second CSI resource set, and
the first and second CSI resource sets include one or more reference signal (RS) resources; and
a processor operably coupled to the transceiver, the processor configured to:
identify, based on the first, second, and third information, a first subset of frequency subbands from the first set of frequency subbands for the first CSI resource set and a second subset of frequency subbands from the first set of frequency subbands for the second CSI resource set; and
determine, based on the identification, one or more first RS resources from the first CSI resource set and one or more second RS resources from the second CSI resource set for frequency selective beam reporting (FSBR),
wherein a RS resource from the one or more RS resources corresponds to a synchronization signal block (SSB) resource or a non-zero-power (NZP) CSI-RS resource.
2 . The UE of claim 1 , wherein the first information includes at least one of:
a subband size in a number of PRBs;
a total number K≥1 of frequency subbands in the first set;
a number M≥1 of frequency subbands in the first subset; and
a number N≥1 of frequency subbands in the second subset.
3 . The UE of claim 1 , wherein:
the first subset comprises first M frequency subbands in the first set,
the second subset comprises remaining N frequency subbands in the first set, and
the first set of frequency subbands, K=M+N.
4 . The UE of claim 1 , wherein
the second information includes a bitmap with bit positions corresponding to frequency subbands in the first set;
when a value of the bit position is set to ‘0’, a corresponding frequency subband belongs to the first subset; and
when the value of the bit position is set to ‘1’, a corresponding frequency subband belongs to the second subset.
5 . The UE of claim 1 , wherein:
the second information includes: a first bitmap for the first CSI resource set with bit positions corresponding to frequency subbands in the first set, and a second bitmap for the second CSI resource set with bit positions corresponding to the frequency subbands in the first set;
when a value of the bit position in the first bitmap is set to ‘1’, a corresponding frequency subband belongs to the first subset; and
when a value of the bit position in the second bitmap is set to ‘1’, a corresponding frequency subband belongs to the second subset.
6 . The UE of claim 1 , wherein:
the one or more first RS resources correspond to one or more frequency subbands in the first subset, respectively, and the one or more second RS resources correspond to one or more frequency subbands in the second subset, respectively, according to:
a fixed rule in system specifications; or
a network configuration or indication via radio resource control (RRC) signaling or medium access control (MAC) control element (CE) or downlink control information (DCI).
7 . The UE of claim 1 , wherein:
the transceiver is further configured to receive fourth information for a second set of frequency subbands for FSBM,
the fourth information indicates at least one of:
a subband size in a number of PRBs; and
a total number of frequency subbands in the second set, and
the processor is further configured to:
identify, based on the first and third-fourth information, that the first set of frequency subbands are associated with the first CSI resource set and the second set of frequency subbands are associated with the second CSI resource set; and
determine, based on the identification, one or more third RS resources from the first CSI resource set and one or more fourth RS resources from the second CSI resource set for FSBR.
8 . The UE of claim 1 , wherein the transceiver is further configured to transmit, in a beam report, at least one of:
one or more first resource indicators corresponding to one or more first RS resources, respectively, from the first CSI resource set;
one or more frequency subband indexes corresponding to the one or more first resource indicators, respectively;
one or more second resource indicators corresponding to one or more second RS resources, respectively, from the second CSI resource set; and
one or more frequency subband indexes corresponding to the one or more second resource indicators, respectively.
9 . A base station (BS), comprising:
a transceiver configured to:
transmit first information for a first set of frequency subbands for frequency selective beam management (FSBM);
transmit second information related to a channel state information (CSI) resource setting, and
transmit third information for the first set of frequency subbands, wherein the third information indicates at least one of:
a subband size in a number of physical resource blocks (PRBs), and
a total number of frequency subbands in the first set,
wherein the CSI resource setting includes a first CSI resource set and a second CSI resource set,
wherein the first and second CSI resource sets include one or more reference signal (RS) resources,
wherein the first, second, and third information indicate a first subset of frequency subbands from the first set of frequency subbands for the first CSI resource set and a second subset of frequency subbands from the first set of frequency subbands for the second CSI resource set,
wherein the first and second information indicate one or more first RS resources from the first CSI resource set and one or more second RS resources from the second CSI resource set for frequency selective beam reporting (FSBR), and
wherein a RS resource from the one or more RS resources corresponds to a synchronization signal block (SSB) resource or a non-zero-power (NZP) CSI-RS resource.
10 . The BS of claim 9 , wherein the first information includes at least one of:
a subband size in a number of PRBs;
a total number K≥1 of frequency subbands in the first set;
a number M≥1 of frequency subbands in the first subset; and
a number N≥1 of frequency subbands in the second subset.
11 . The BS of claim 9 , wherein:
the first subset comprises first M frequency subbands in the first set,
the second subset comprises remaining N frequency subbands in the first set, and
the first set of frequency subbands, K=M+N.
12 . The BS of claim 9 , wherein
the second information includes a bitmap with bit positions corresponding to frequency subbands in the first set;
when a value of the bit position is set to ‘0’, a corresponding frequency subband belongs to the first subset; and
when the value of the bit position is set to ‘1’, a corresponding frequency subband belongs to the second subset.
13 . The BS of claim 9 , wherein:
the second information includes: a first bitmap for the first CSI resource set with bit positions corresponding to frequency subbands in the first set, and a second bitmap for the second CSI resource set with bit positions corresponding to the frequency subbands in the first set;
when a value of the bit position in the first bitmap is set to ‘1’, a corresponding frequency subband belongs to the first subset; and
when a value of the bit position in the second bitmap is set to ‘1’, a corresponding frequency subband belongs to the second subset.
14 . The BS of claim 9 , wherein:
the one or more first RS resources correspond to one or more frequency subbands in the first subset, respectively, and the one or more second RS resources correspond to one or more frequency subbands in the second subset, respectively, according to:
a fixed rule in system specifications; or
a network configuration or indication via radio resource control (RRC) signaling or medium access control (MAC) control element (CE) or downlink control information (DCI).
15 . The BS of claim 9 , wherein:
the transceiver is further configured to transmit fourth information for a second set of frequency subbands for FSBM,
the fourth information indicates at least one of:
a subband size in a number of PRBs; and
a total number of frequency subbands in the second set,
the first and fourth information indicate that the first set of frequency subbands are associated with the first CSI resource set and the second set of frequency subbands are associated with the second CSI resource set, and
the first and fourth information indicate one or more third RS resources from the first CSI resource set and one or more fourth RS resources from the second CSI resource set for FSBR.
16 . The BS of claim 9 , wherein the transceiver is further configured to receive, in a beam report, at least one of:
one or more first resource indicators corresponding to one or more first RS resources, respectively, from the first CSI resource set;
one or more frequency subband indexes corresponding to the one or more first resource indicators, respectively;
one or more second resource indicators corresponding to one or more second RS resources, respectively, from the second CSI resource set; and
one or more frequency subband indexes corresponding to the one or more second resource indicators, respectively.
17 . A method for operating a user equipment (UE), the method comprising:
receiving first information for a first set of frequency subbands for frequency selective beam management (FSBM);
receiving second information related to a channel state information (CSI) resource setting;
receiving third information for the first set of frequency subbands, wherein:
the third information indicates at least one of:
a subband size in a number of physical resource blocks (PRBs), and
a total number of frequency subbands in the first set,
the CSI resource setting includes a first CSI resource set and a second CSI resource set, and
the first and second CSI resource sets include one or more reference signal (RS) resources;
identifying, based on the first, second, and third information, a first subset of frequency subbands from the first set of frequency subbands for the first CSI resource set and a second subset of frequency subbands from the first set of frequency subbands for the second CSI resource set; and
determining, based on the identification, one or more first RS resources from the first CSI resource set and one or more second RS resources from the second CSI resource set for frequency selective beam reporting (FSBR),
wherein a RS resource from the one or more RS resources corresponds to a synchronization signal block (SSB) resource or a non-zero-power (NZP) CSI-RS resource.
18 . The method of claim 17 , wherein the first information includes at least one of:
a subband size in a number of PRBs;
a total number K≥1 of frequency subbands in the first set;
a number M≥1 of frequency subbands in the first subset; and
a number N≥1 of frequency subbands in the second subset.
19 . The method of claim 17 , wherein:
the first subset comprises first M frequency subbands in the first set,
the second subset comprises remaining N frequency subbands in the first set, and
the first set of frequency subbands, K=M+N.
20 . The method of claim 17 , wherein
the second information includes a bitmap with bit positions corresponding to frequency subbands in the first set;
when a value of the bit position is set to ‘0’, a corresponding frequency subband belongs to the first subset; and
when the value of the bit position is set to ‘1’, a corresponding frequency subband belongs to the second subset.