Channel state information reporting for multiple transmit/receive points
Apparatuses, methods, and systems are disclosed for channel state information reporting for multiple transmit/receive points. One apparatus includes a transceiver that receives an indication from a mobile wireless communication net-work that channel state information (“CSI”) corresponding to multiple transmit/receives points (“TRPs”) is to be reported and a processor that generates at least one CSI report according to the CSI reporting configuration, the at least one CSI report comprising a CSI-reference signal (“CSI-RS”) resource indicator (“CRI”), wherein the transceiver reports the at least one CSI report comprising the CRI to the mobile wireless communication network.
1 . A user equipment (“UE”) for wireless communication, 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 an indication to report channel state information (“CSI”) associated with multiple transmit/receives points (“TRPs”), wherein the indication indicates a CSI reporting configuration;
generate a CSI report according to the CSI reporting configuration, wherein the CSI report comprises two CSI-reference signal (“CSI-RS”) resource indicators (“CRIs”), and wherein the two CRIs are represented using a single codepoint; and
transmit the CSI report.
2 . The UE of claim 1 , wherein a value of a field of the CSI report that corresponds to the two CRIs is the same for a plurality of CSI reports associated with one or more of the multiple TRPs.
3 . The UE of claim 1 , wherein a value of a field of the CSI report that corresponds to the two CRIs is included in one CSI report associated with one or more of the multiple TRPs.
4 . The UE of claim 1 , wherein the CSI report comprises:
two or less precoding matrix indicators (“PMIs”); and
two or less layer indicators (“LIs”).
5 . The UE of claim 1 , wherein the CSI report comprises two Rls,
and wherein the two Rls are represented using a single codepoint.
6 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to determine a capability for reporting the CSI report associated with one or more of the multiple TRPs based at least in part on:
an indication that multiple TRP transmission is supported;
a number of CSI reporting settings;
a number of CSI resource settings;
a number of CSI resource sets; or
a combination thereof.
7 . A method performed by a user equipment (“UE”), comprising:
receiving an indication to report channel state information (“CSI”) associated with multiple transmit/receives points (“TRPs”), wherein the indication indicates a CSI reporting configuration;
generating a CSI report according to the CSI reporting configuration, wherein the CSI report comprises two CSI-reference signal (“CSI-RS”) resource indicators (“CRIs”), and wherein the two CRIs are represented using a single codepoint; and
transmit the CSI report.
8 . The method of claim 7 , wherein a value of a field of the CSI report that corresponds to the two CRIs is the same for a plurality of CSI reports associated with one or more of the multiple TRPs.
9 . The method of claim 7 , wherein a value of a field of the CSI report that corresponds to the two CRIs is included in one CSI report associated with one or more of the multiple TRPs.
10 . The method of claim 7 , wherein the CSI report comprises:
two or less precoding matrix indicators (“PMIs”); and
two or less layer indicators (“LIs”).
11 . The method of claim 7 , wherein the CSI report comprises two Rls, and wherein the two RIs are represented using a single codepoint.
12 . The method of claim 7 , further comprising determining a capability for reporting the CSI report associated with one or more of the multiple TRPs based at least in part on:
an indication that multiple TRP transmission is supported;
a number of CSI reporting settings;
a number of CSI resource settings;
a number of CSI resource sets; or
a combination thereof.
13 . A base station for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the base station to:
send an indication to report channel state information (“CSI”) associated with multiple transmit/receives points (“TRPs”), wherein the indication indicates a CSI reporting configuration; and
receive a CSI report associated with the multiple TRPs, the CSI report generated according to the CSI reporting configuration and comprising a two CSI-reference signal (“CSI-RS”) resource indicators (“CRIs”), and wherein the two CRIs are represented using a single codepoint.
14 . The base station of claim 13 , wherein a value of a field of the CSI report that corresponds to the two CRIs is the same for a plurality of CSI reports associated with one or more of the multiple TRPs.
15 . The base station of claim 13 , wherein a value of a field of the CSI report that corresponds to the two CRIs is included in one CSI report associated with one or more of the multiple TRPs.
16 . The base station of claim 13 , wherein the CSI report comprises:
two or less precoding matrix indicators (“PMIs”); and
two or less layer indicators (“LIs”).
17 . The base station of claim 13 , wherein the CSI report comprises two Rls, and wherein the two RIs are represented using a single codepoint.
18 . A method performed by a base station, comprising:
sending an indication to report channel state information (“CSI”) associated with multiple transmit/receives points (“TRPs”), wherein the indication indicates a CSI reporting configuration; and
receiving a CSI report associated with the multiple TRPs, the CSI report generated according to the CSI reporting configuration and comprising a two CSI-reference signal (“CSI-RS”) resource indicators (“CRIs”), and wherein the two CRIs are represented using a single codepoint.
19 . The method of claim 18 , wherein a value of a field of the CSI report that corresponds to the two CRIs is the same for a plurality of CSI reports associated with one or more of the multiple TRPs.
20 . The method of claim 18 , wherein a value of a field of the CSI report that corresponds to the two CRIs is included in one CSI report associated with one or more of the multiple TRPs.