Channel state information reporting
One method includes receiving channel state information report configuration information, wherein the channel state information report configuration information includes: information indicating one or more channel state information channel state information reference signal resource configurations associated with a channel state information channel state information reference signal resource set for channel measurement and a channel state information interference management resource set for interference measurement; and information indicating that channel state information feedback corresponding to multiple points is used. The method includes generating a set of channel state information reports based on the channel state information report configuration information. Each channel state information report in the set of channel state information reports includes two parts. The method includes reporting the set of channel state information reports to the network.
1 . A method performed by a user equipment (UE), the method comprising:
receiving channel state information (CSI) report configuration information, wherein the CSI report configuration information comprises:
information indicating one or more CSI reference signal (RS) resource configurations associated with a non-zero power (NZP) CSI RS resource set for channel measurement and a CSI interference management resource set for interference measurement; and
information indicating that CSI feedback corresponding to multiple points is used, wherein each point of the multiple points is associated with a NZP CSI RS resource for channel measurement of the CSI RS resource set, and the multiple points are associated with one or more CSI interference management resources for interference measurement of the CSI interference management resource set;
generating a set of CSI reports based on the CSI report configuration information, wherein each CSI report in the set of CSI reports comprises two parts; and
reporting the set of CSI reports to a network.
2 . The method of claim 1 , wherein each point of the multiple points corresponds to a transmission-and-reception point (TRP) or a panel of a TRP.
3 . The method of claim 1 , wherein the information indicating that CSI feedback for multiple points is used comprises one or more of:
a radio resource control (RRC) parameter within the CSI report configuration;
a CSI report quantity within the CSI report configuration;
a quasi-co-location (QCL) relationship involving one or more CSI RS resources within the CSI RS resource set;
a codepoint indicating different downlink control information (DCI) states;
a codebook type parameter;
a codebook configuration parameter;
a transmission configuration indicator codepoint from a transmission configuration comprising at least two transmission configuration indicator (TCI) states; or
an indication of a spatial division multiplexing scheme across multiple points.
4 . The method of claim 1 , wherein each point of the multiple points is associated with a CSI interference management resource for interference measurement.
5 . The method of claim 4 , wherein each NZP CSI RS resource for channel measurement is resource-wise associated with a CSI interference management resource by ordering of the NZP CSI RS resource and CSI interference management resource in corresponding resource sets, and a number of NZP CSI RS resources for channel measurement is equal to a number of the CSI interference management resources.
6 . The method of claim 4 , wherein the NZP CSI RS resource for channel measurement and the CSI interference management resource for interference measurement associated with a same point are quasi-co-located (QCL) with respect to ‘QCL-TypeD’.
7 . The method of claim 1 , wherein the multiple points are associated with at least one NZP CSI RS resource for interference measurement.
8 . The method of claim 1 , wherein the set of CSI reports comprises two subsets of CSI reports, a first of the two subsets of CSI reports includes at least one CSI report corresponding to single-point transmission, and a second of the two subsets of CSI reports includes at least one CSI report corresponding to joint transmission from multiple points.
9 . The method of claim 8 , wherein a partition of CSI that is the same for two CSI reports associated with different subsets of the two subsets of CSI reports is reported in one of the two CSI reports.
10 . The method of claim 1 , wherein a subset of one or more CSI reports of the set of CSI reports is identified.
11 . The method of claim 10 , wherein the one or more CSI reports of the subset of CSI reports are identified based on one or more of:
a network configuration;
identifications of the CSI reports;
UE feedback;
a function of rank indicators of the one or more CSI reports; or
a function of channel quality indicators (CQIs) of the one or more CSI reports.
12 . The method of claim 10 , wherein the one or more CSI reports of the subset of CSI reports are partially reported.
13 . The method of claim 12 , wherein a first part of the two parts of the one or more CSI reports of the subset of CSI reports are reported, and a second part of the two parts of the one or more CSI reports of the subset of CSI reports are not reported.
14 . The method of claim 12 , wherein a first part of the two parts and a first portion of a second part of the two parts of the one or more CSI reports of the subset of CSI reports are reported, and a last portion of the second part of two parts of the one or more CSI reports of the subset of CSI reports are not reported.
15 . The method of claim 10 , wherein the one or more CSI reports of the subset of CSI reports are not reported.
16 . A user equipment (UE), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
receive channel state information (CSI) report configuration information, wherein the CSI report configuration information comprises:
information indicating one or more CSI reference signal (RS) resource configurations associated with a non-zero power (NZP) CSI RS resource set for channel measurement and a CSI interference management resource set for interference measurement; and
information indicating that CSI feedback corresponding to multiple points is used, wherein each point of the multiple points is associated with a NZP CSI RS resource for channel measurement of the CSI RS resource set, and the multiple points are associated with one or more CSI interference management resources for interference measurement of the CSI interference management resource set;
generate a set of CSI reports based on the CSI report configuration information, wherein each CSI report in the set of CSI reports comprises two parts; and
report the set of CSI reports to a network.
17 . The UE of claim 16 , wherein the information indicating that CSI feedback for multiple points is used comprises one or more of:
a radio resource control (RRC) parameter within the CSI report configuration;
a CSI report quantity within the CSI report configuration;
a quasi-co-location (QCL) relationship involving one or more CSI RS resources within the CSI RS resource set;
a codepoint indicating different downlink control information (DCI) states;
a codebook type parameter;
a codebook configuration parameter;
a transmission configuration indicator (TCI) codepoint from a transmission configuration comprising at least two TCI states; or
an indication of a spatial division multiplexing scheme across multiple points.
18 . The UE of claim 16 , wherein each point of the multiple points is associated with a CSI interference management resource for interference measurement.
19 . The UE of claim 18 , wherein each NZP CSI RS resource for channel measurement is resource-wise associated with a CSI interference management resource by ordering of the NZP CSI RS resource and CSI interference management resource in corresponding resource sets, and a number of NZP CSI RS resources for channel measurement is equal to a number of the CSI interference management resources.
20 . The UE of claim 18 , wherein the NZP CSI RS resource for channel measurement and the CSI interference management resource for interference measurement associated with a same point are quasi-co-located (QCL) with respect to ‘QCL-TypeD’.