Abstract: Methods and apparatuses for measuring and reporting channel parameters in a distributed antenna wireless communication system. A method for operating a user equipment (UE) includes receiving a configuration for reporting in a channel state information (CSI) report a channel offset for a target entity; measuring one or more measurement reference signals (RSs) for determining the channel offset; determining, based on the measured one or more measurement RSs, the channel offset for the target entity; and transmitting, at least based on the configuration, the CSI report including a channel offset report associated with the determined channel offset. The measurement RSs comprise channel state information reference signals (CSI-RSs), synchronization signal blocks (SSBs), or both CSI-RSs and SSBs.

Abstract: A method for operating a user equipment (UE) comprises receiving configuration information about a transmission configuration indicator (TCI) state indication via a downlink control information (DCI), the configuration information including a set of TCI states and information for configuring the DCI from one of a downlink (DL) DCI (DL-DCI) and a DL-TCI-DCI, wherein the DL-DCI schedules a DL physical DL shared channel (PDSCH) assignment and the DL-TCI-DCI is a dedicated DCI for TCI state indication; receiving, based on the configuration information, the configured DCI; decoding the configured DCI to obtain a TCI state update; determining a receive beam based on the TCI state update; and applying the receive beam for a reception of a DL control or a DL data.

Abstract: Methods and apparatuses for user equipment (UE)-initiated reporting. A method of operating a user equipment (UE) includes transmitting a first uplink (UL) signal, receiving, in response to the first UL signal, a first downlink (DL) signal indicating resources for a second DL signal, and a second UL signal, and receiving the second DL signal based on the indicated resources for the second DL signal. The method further includes measuring the second DL signal, determining a report based on the measurement, and transmitting the report based on the indicated resources for the second UL signal. The second UL signal is a physical UL shared channel (PUSCH) or a physical uplink control channel (PUCCH).

Abstract: Apparatuses and methods for uplink (UL) transmissions and receptions. A method performed by a user equipment (UE). The method includes transmitting capability information about an UL codebook for 3 antenna ports; receiving a configuration indicating a sounding resource signal (SRS) resource set comprising at least one SRS resource with 4 SRS ports, wherein one of the 4 SRS ports is muted; and transmitting a SRS from 3 of the 4 SRS ports. The method further includes receiving an indication indicating a transmit precoding matrix indicator (TPMI) for transmission of a physical uplink shared channel (PUSCH) and transmitting the PUSCH based on the indicated TPMI. The TPMI indicates a precoding matrix from the UL codebook for the 3 antenna ports.

Abstract: Methods and apparatuses for inter-cell beam management triggered cell switch. A method of operating a user equipment (UE) includes receiving first information for first sets of downlink (DL) or joint candidate cell transmission configuration indicator (TCI) states corresponding to one or more candidate cells, receiving second information for second sets of uplink (UL) candidate cell TCI states corresponding to the one or more candidate cells, receiving a first medium access control-channel element (MAC-CE) for activating a subset of candidate cell TCI states from the first or second sets, and receiving a second MAC CE including a cell switch command. The cell switch command indicates a candidate cell and at least one candidate cell TCI state from the first sets or the second sets corresponding to the candidate cell. The method further includes deactivating the subset of activated candidate cell TCI states excluding the at least one candidate cell TCI state.

Abstract: Apparatuses and methods for enhancement of channel state information (CSI) reporting for hybrid beamforming. A method performed by a user equipment (UE) includes receiving information about a CSI report, Ks CSI reference signal (CSI-RS) resources, and a value of M, where Ks>1, 1<M?min (X, Ks), and X is an integer. The method further includes, based on the information, measuring the Ks CSI-RS resources and determining the CSI report associated with M CSI-RS resources out of the Ks CSI-RS resources. The CSI report includes M CSI-RS resource indicators (CRIs), M precoding matrix indicators (PMIs), and M channel quality indicators (CQIs). The method further includes transmitting the CSI report.

Abstract: Methods and apparatuses for beam measurement and reporting. A method performed by a user equipment (UE) is provided. The method includes receiving first information related to inclusion in a report of at least one first report quantity associated with a first reference signal (RS) resource and receiving second information related to at least one second RS resource. The method further includes determining, based on the first RS resource, the at least one first report quantity and determining, based on the at least one second RS resource, at least one second report quantity. The method further includes determining, based on (i) the first information and (ii) the at least one second report quantity, the report and transmitting the report.

Abstract: A method for operating a user equipment (UE) comprises receiving configuration information about a channel state information (CSI) report, the configuration information including a number of radio remote heads (RRHs), NRRH>1; selecting a subset of RRHs from the NRRH RRHs independently for each subband (SB); determining the CSI report including an indicator indicating the selected subset of RRHs for each SB; and transmitting the CSI report including the indicator indicating the selected subset of RRHs for each SB.

Abstract: Apparatuses and methods for channel state information (CSI) reporting. A method performed by a user equipment (UE) includes receiving information about a channel state information (CSI) report. The information indicates Ng CSI reference signal (CSI-RS) resources, where Ng?1. The method further includes, based on the information: measuring the Ng CSI-RS resources; identifying a number of groups of receive antenna ports, N, where N>1; and determining the CSI report associated with the Ng CSI-RS resources based on the number of groups of receive antenna ports. The method further includes transmitting the CSI report. The number of groups of receive antenna ports is according to a UE capability. The CSI report includes a rank indicator (RI) of ? layers, NPMI?1 precoding matrix indicators (PMIs), and NCQI?1 channel quality indicators (CQIs).

Abstract: Methods and apparatuses for group common beam indication. A method performed by a user equipment (UE) includes receiving a plurality of first transmission configuration indication (TCI) states in a group common downlink control information (DCI) and receiving first information related to a plurality of channel measurement resources (CMRs) for coherent-joint transmission (CJT). The method further includes determining, based on the plurality of first TCI states, at least one second TCI state; determining an association between the at least one second TCI state and the first information; and receiving, based on the association, the plurality of CMRs. The first information comprises at least a number of the plurality of CMRs and time-frequency domain resource configurations for the plurality of CMRs.

Abstract: A method for operating a user equipment (UE) comprises receiving at least one channel state information (CSI) report setting about a first type of quantities CSI(1), . . . , CSI(NRRH) for NRRH>1 remote radio heads (RRHs), each RRH comprising a group of CSI reference signal (CSI-RS) ports, wherein NRRH=a number of RRHs; receiving at least one CSI-RS resource setting about a second type of quantities CSI-RS(1), . . . , CSI-RS(NRRH) transmitted from NRRH groups of CSI-RS ports, wherein at least one of the at least one CSI report setting or the at least one CSI-RS resource setting is not equal to NRRH; and based on the at least one CSI report setting and the at least one CSI-RS resource setting: measuring CSI-RS(1), . . . , CSI-RS(NRRH); and determining, based on the measurement, CSI(1), . . . , CSI(NRRH); and transmitting CSI(1), . . . , CSI(NRRH).

Abstract: A user equipment (UE) for channel state information (CSI) feedback comprises a transceiver configured to receive, from a base station (BS), configuration information for the CSI feedback, the configuration information indicating a number of antenna panels (Ng) at the BS and a codebook mode, wherein Ng>1 and each of the antenna panels comprises antenna ports with a first polarization (P1) and antenna ports with a second polarization (P2). The UE further comprises a processor operably connected to the transceiver, the processor configured to identify the number of antenna panels (Ng) at the BS, identify a codebook for the CSI feedback based on the codebook mode configured between a first codebook mode and a second codebook mode, and generate the CSI feedback using the identified codebook. The transceiver is further configured to transmit the generated CSI feedback to the BS.

Abstract: Methods and apparatuses for channel and interference measurement in a wireless communication system. A method for operating a user equipment (UE) includes receiving a reporting setting and receiving a resource setting associated with the reporting setting. The reporting setting is configured with a higher layer parameter reportQuantity that is set to at least cri-SINR. The resource setting is configured with a higher layer parameter resourceType that is set to aperiodic, periodic, or semi-persistent. The method further includes receiving a first set of reference signals (RSs) through a first set of RS resources; receiving a second set of RSs through a second set of RS resources; measuring at least one RS in the first or second sets of RSs; and determining, based on the reporting setting and the measured at least one RS, one or more layer-1 signal-to-noise and interference ratios (L1-SINRs).

Abstract: A method for operating a user equipment (UE) comprises receiving a configuration about a CSI report, the configuration including information about a codebook, the codebook comprising components: (i) sets of basis vectors including a first set of vectors each of length PCSIRS×1 for a SD, a second set of vectors each of length N3×1 for a FD, and a third set of vectors each of length N4×1 for a DD, and (ii) coefficients associated with each basis vector triple (ai, bf, cd), ai from the first set, bf from the second set, and cd from the third set; determining, based on the configuration, the components; and transmitting the CSI report including: at least one basis vector indicator indicating all or a portion of the sets of basis vectors, and at least one coefficient indicator indicating all or a portion of the coefficients.

Abstract: A method for operating a user equipment (UE) comprises receiving configuration information including information on a set of transmission configuration indicator (TCI) states and information on reception of a beam indication; receiving the beam indication based on the configuration information; and determining whether the beam indication is used for (A) or (B), wherein: (A) corresponds to triggering a beam measurement and a beam report, and (B) corresponds to indicating at least one TCI state for downlink (DL) reception or uplink (UL) transmission.

Abstract: A method for operating a user equipment (UE) comprises: receiving information associated with a channel state information (CSI) report, the information including a third-domain (TD) parameter N, where N>1; determining spatial domain (SD) basis vectors; determining frequency domain (FD) basis vectors; determining coefficients; wherein at least one of the SD basis vectors, the FD basis vectors, and the coefficients are determined independently for each dimension of the TD or determined jointly for all dimensions of the TD; and transmitting the CSI report including a precoding matrix indicator (PMI), the PMI indicating the SD basis vectors, the FD basis vectors, and the coefficients.

Abstract: Apparatuses and methods for channel state information (CSI) computation time. A method performed by a user equipment (UE) includes receiving a configuration about a CSI report; based on the configuration, determining the CSI report; and transmitting the CSI report. The CSI report starts no earlier than at a symbol Z and at a symbol Z?. The symbol Z is a next uplink symbol with a cyclic prefix (CP) starting Tproc,CSI=Z(2048+144)·k2??·Tc after an end of a last symbol of a downlink control information triggering the CSI report. The symbol Z? is a next uplink symbol with a CP starting T?proc,CSI=Z(2048+144)·k2??·Tc after an end of a last symbol in time of a latest of channel and interference measurements associated with the CSI report. (Z, Z?) is (Z2+w, Z?2) or (Z2+w+Z?2, 2Z?2) according to a UE capability. (Z2, Z?2) is according to a table; w depends on a periodicity of a periodic or semi-persistent CSI-reference signal resource.

Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors.

Abstract: Methods and apparatuses for frequency selective beam management. A method performed by a user equipment (UE) includes receiving first information related to a plurality of frequency subbands and receiving, in a first part of a downlink control information (DCI), at least one first transmission configuration indication (TCI) state and second information related to a second part of the DCI. The method further includes determining, based on the first information, a first association between the plurality of frequency subbands and the at least one first TCI state; for a first frequency subband from the plurality of frequency subbands, determining a first TCI state based on the first association; and identifying, based on the determined first TCI state, a spatial domain filter for transmitting or receiving UE-dedicated channels or signals for the first frequency subband.

Abstract: Apparatuses and methods for port and resource mapping rules. A method performed by a user equipment (UE) includes receiving information about a channel state information (CSI) report associated with K>1 CSI reference signal (CSI-RS) resources each with 2n1n2 CSI-RS ports. Here, n1 and n2 are numbers of CSI-RS antenna ports of each CSI-RS resource in first and second dimensions, respectively, for each of dual-polarized antenna groups. The method further includes measuring the K CSI-RS resources and determining and transmitting the CSI report including a precoding matrix indicator (PMI) associated with 2N1N2 PMI ports. Here, 2N1N2=2Kn1n2. N1 and N2 are numbers of PMI antenna ports in the first and second dimensions, respectively, for each of the dual-polarized antenna groups and (N1,N2) correspond to either (Kn1,n2) or (n1,Kn2), determined based on a port-mapping method between PMI and CSI-RS port indexes with a CSI-RS resource index.