Channel state information (csi) enhancement for single downlink control information (dci) multiple transmission and reception point (trp) operation
A user equipment (UE), baseband processor or other network device (e.g., base station, next generation NodeB, etc.) can operate to process or generate CSI reports based on a CSI report configuration for a single transmission and reception point (sTRP) operation and a multiple TRP (mTRP) operation. The CSI report can be configured based on a plurality of weighted CSI report priority variables, wherein the plurality of weighted CSI report priority variables comprises measurements associated the sTRP operation and measurements associated with the mTRP operation, and the measurements associated with the sTRP operation are configured with a different priority than the measurements associated with the mTRP operation.
1 . A user equipment (UE), comprising:
radio frequency (RF) circuitry;
a memory; and
processing circuitry configured to, when executing instructions stored in the memory, cause the UE to:
receive a Radio Resource Control (RRC) message with a channel state information (CSI) report configuration for a single transmission reception point (sTRP) operation and a multiple transmission reception point (mTRP) operation;
determine that a plurality of CSI report priority variables associated with one or more measurements for the sTRP operation and one or more measurements for the mTRP operation have a same priority level;
in response to the determination:
concatenate the one or more measurements for the mTRP operation together in a first concatenation, and separately concatenate the one or more measurements for the sTRP operation together in a second concatenation;
perform a further concatenation on the first concatenation and the second concatenation to form a CSI report; and
transmit the CSI report via the RF circuitry.
2 . The UE of claim 1 , wherein the processing circuitry is further configured to cause the UE to:
receive a medium access control (MAC) control element (MAC-CE) to dynamically modify channel measurement resources (CMRs) of the CSI report configuration, wherein the MAC-CE comprises a CSI report configuration ID, a serving cell index, and one or more selections of a number of CSI resources for sTRP measurement and a number of pairs of CSI resources for mTRP measurement.
3 . The UE of claim 2 , wherein the MAC-CE further comprises a bitmap that indicates which reference signals are deactivated or activated for measurement for the CSI report, wherein the number of CSI resources for sTRP measurement comprises a maximum number of CSI resources for sTRP measurement from a superset of resources of the CSI report configuration, and the number of pairs of CSI resources configured for mTRP measurement comprises a maximum number of pairs of CSI resources from the superset of resources.
4 . The UE of claim 2 , wherein the MAC-CE comprises a first number of first resources in priority of a first set of resources to select for the sTRP measurement of a first TRP, a second number of first resources in priority of a second set of resources for the sTRP measurement of a second TRP, and a third number of first resources in priority of the number of pairs of CSI resources for the mTRP measurement.
5 . The UE of claim 2 , wherein the processing circuitry is further configured to cause the UE to:
activate or deactivate corresponding CSI interference measurement (CSI-IM) resources based on a one-to-one mapping to the CMRs of the CSI report configuration that are modified via the MAC-CE.
6 . The UE of claim 1 , wherein the processing circuitry is further configured to cause the UE to:
receive a medium access control (MAC) control element (MAC-CE) to dynamically modify channel measurement resources (CMRs) of the CSI report configuration, wherein the MAC-CE comprises a CSI report configuration ID, a serving cell index, and one or more indications to modify reporting of the CSI report with only sTRP testing, only mTRP testing, or both sTRP testing and mTRP testing.
7 . The UE of claim 1 , wherein the processing circuitry is further configured to cause the UE to:
generate the CSI report with a CSI compression such that one or more report quantities of the sTRP operation that are shared with one or more report quantities of the mTRP operation are reported only once in the CSI report, wherein the one or more report quantities comprise one or more of: a CSI-RS resource indicator (CRI), a synchronization signal (SS)/physical broadcast resource block indicator (SSBRI), a rank indicator (RI), a precoding matrix indicator (PMI), or a layer indicator (LI).
8 . The UE of claim 7 , wherein the processing circuitry is further configured to cause the UE to:
provide an indicator of CSI compression corresponding to the one or more shared report quantities in the CSI report.
9 . The UE of claim 1 , wherein the further concatenation includes ordering the first concatenation first and the second concatenation second.
10 . The UE of claim 9 ,
wherein the one or more concatenated measurements for the mTRP operation in the first concatenation are implied to have priority over the one or more concatenated measurements for the sTRP operation in the second concatenation with respect to CSI multiplexing and uplink control information (UCI) omission.
11 . A baseband processor configured to, when executing instructions stored in a memory, perform operations comprising:
receiving a Radio Resource Control (RRC) message with a channel state information (CSI) report configuration for a single transmission reception point (sTRP) operation and a multiple transmission reception point (mTRP) operation;
in response to a plurality of CSI report priority variables associated with one or more measurements for the sTRP operation and one or more measurements for the mTRP operation having a same priority level:
concatenating the one or more measurements for the mTRP operation together in a first concatenation, and separately concatenating the one or more measurements for the sTRP operation together in a second concatenation;
performing a further concatenation on the first concatenation and the second concatenation to form a CSI report; and
providing the CSI report to a radio frequency (RF) interface for transmission.
12 . The baseband processor of claim 11 , wherein the plurality of CSI report priority variables comprise one or more of: measurements associated with the sTRP operation and measurements associated with the mTRP operation, a report type, a report quantity, a serving cell index, or a report configuration ID.
13 . The baseband processor of claim 11 ,
wherein the further concatenation includes ordering the first concatenation first and the second concatenation second.
14 . The baseband processor of claim 13 ,
wherein the one or more concatenated measurements for the mTRP operation in the first concatenation are implied to have priority over the one or more concatenated measurements for the sTRP operation in the second concatenation with respect to CSI multiplexing and uplink control information (UCI) omission.
15 . A base station comprising:
radio frequency (RF) circuitry;
a memory; and
processing circuitry configured to, when executing instructions stored in the memory, cause the base station to:
transmit, via the RF circuitry, a Radio Resource Control (RRC) message with a channel state information (CSI) report configuration for a CSI report based on a single transmission reception point (sTRP) operation and a multiple transmission reception point (mTRP) operation; and
receive the CSI report based on the CSI report configuration, the CSI report including one or more measurements for the mTRP operation concatenated together in a first concatenation and one or more measurements for the sTRP operation concatenated together in a second concatenation separate from the first concatenation, wherein the first concatenation and the second concatenation are further concatenated to form the CSI report.
16 . The base station of claim 15 , wherein the CSI report is based on a plurality of weighted CSI report priority variables, wherein the plurality of weighted CSI report priority variables comprise one or more of: measurements associated with the sTRP operation and measurements associated with the mTRP operation, a report type, a report quantity, a serving cell index, or a report configuration ID.
17 . The base station of claim 15 , wherein the processing circuitry is further configured to cause the base station to:
transmit, via the RF circuitry, a medium access control (MAC) control element (MAC-CE) to dynamically update channel measurement resources (CMRs) of the CSI report configuration, wherein the MAC-CE comprises a CSI report configuration ID, a serving cell index, and one or more selections of a number of CSI resources for sTRP measurement and a number of pairs of CSI resources for mTRP measurement.
18 . The base station of claim 17 , wherein the processing circuitry is further configured to cause the base station to:
activate or deactivate corresponding CSI interference measurement (CSI-IM) resources based on a one-to-one mapping to the CMRs of the CSI report configuration that are updated via the MAC-CE.
19 . The base station of claim 15 , wherein the processing circuitry is further configured to cause the base station to:
transmit, via the RF circuitry, a medium access control (MAC) control element (MAC-CE) to dynamically modify channel measurement resources (CMRs) of the CSI report configuration, wherein the MAC-CE comprises a CSI report configuration ID, a serving cell index, and one or more indications to activate or deactivate reporting of sTRP testing, mTRP testing, or both sTRP testing and mTRP testing.