Abstract: A method for operating a user equipment (UE) comprises receiving configuration information about a channel state information (CSI) report associated with NRRH>1 remote radio heads (RRHs), wherein: NRRH=a number of RRHs, each RRH r=1, . . . , NRRH comprises a group of CSI reference signal (CSI-RS) ports, and the configuration information includes, for each RRH r=1, . . . , NRRH, information about at least one CSI-RS resource; and for each RRH r=1, . . . , NRRH: measuring the at least one CSI-RS resource, and determining, based on the measured at least one CSI-RS resource, whether a CSI-RS resource for RRH r is a channel measurement resource (CMR) or an interference measurement resource (IMR); generating the CSI report based on whether each CSI-RS resource among the measured at least one CSI-RS resource for each RRH is determined as a CMR or an IMR; and transmitting the CSI report.

Abstract: An apparatus for beam management includes a transceiver configured to receive configuration information for one or more transmission configuration indicator (TCI) states and corresponding channels, receive one or more TCI state identifiers (IDs) on a channel for conveying TCI state IDs from among the corresponding channels, and transmit an acknowledgement message in response to the reception of the one or more TCI state IDs. The apparatus further includes a processor configured to determine, based on the one or more TCI state IDs, TCI states for data and control channels, respectively, from among the corresponding channels, and update spatial filters for the data and control channels based on the determined TCI states for the data channels and the control channels, respectively. The transceiver is further configured to receive the data channels and the control channels based on the updated spatial filters for the data and the control channels, respectively.

Abstract: A method for operating a user equipment (UE) comprises receiving channel state information (CSI) reporting configuration information including a CSI reporting band and a frequency granularity of CSI reporting, where the CSI reporting band is within a bandwidth part (BWP) comprising M physical resource blocks (PRBs), and the frequency granularity of CSI reporting is based on whether M<N, where N is a threshold; identifying the frequency granularity of CSI reporting; generating a CSI report with the identified frequency granularity, wherein the CSI report includes at least one of a precoding matrix indicator (PMI) and a channel quality indicator (CQI); and transmitting the CSI report over an uplink (UL) channel.

Abstract: Apparatuses and methods for codebook subset restriction for coherent joint transmission in wireless networks. A method includes receiving information about a channel state information (CSI) report associated with NTRP>1 groups of antenna ports. The information indicates (i) a coherent joint transmission (CJT) codebook, (ii) a rank restriction, and (iii) NTRP codebook subset restrictions (CBSRs). The method further includes identifying, based on the rank restriction, a set S1 of one or more rank values allowed for the CSI report; identifying, based on the NTRP CBSRs, sets S2,1, . . . , S2,NTRP; determining the CSI report associated with the NTRP groups of antenna ports based on the CJT codebook, the set S1, and the sets S2,1, . . . , S2,NTRP; and transmitting the CSI report. For n=1, . . . , NTRP, the set S2,n is associated with n-th groups of antenna ports of the NTRP groups of antenna ports. The set S2,n includes spatial-domain (SD) basis vectors that are allowed for the CSI report.

Abstract: Method and apparatuses for channel state information (CSI) reporting based on a window of basis vectors are provided. A method includes receiving a configuration about a CSI report including information about NTRP non-zero power (NZP) CSI-reference signal (RS) resources, where NTRP?1, and a parameter codebookType set to type-II-CJT-r18 or type-II-PortSelection-CJT-r18. The method further includes determining, for each layer l=1, . . . , v, an indicator for indicating an index of a strongest coefficient among KlNZ coefficients, where KlNZ is a total number of non-zero coefficients that are associated with Z NZP CSI-RS resources and Z?NTRP, and a number of bits Pl for the indicator. The method further includes transmitting the CSI report including, for each layer, Pl bits for the indicator. When codebookType=type-II-CJT-r18, a value of Pl depends on a value of KlNZ or a value of ?r=1Z Lr. When codebookType=type-II-PortSelection-CJT-r18, the value of Pl depends on a value of 2Mv ?r=1Z Lr.

Abstract: Methods and apparatuses for codebook based UL transmission are provided. A method for operating a UE comprises transmitting a UE capability information about a UL codebook for 8 antenna ports; receiving an indication indicating a TPMI for a transmission of a PUSCH; and transmitting the PUSCH based on the indicated TPMI, wherein the TPMI indicates a precoding matrix from the UL codebook for the 8 antenna ports, the UL codebook includes full-coherent (FC) precoding matrices comprising all non-zero entries, and an l-th column of a FC precoding matrix is associated with an l-th layer of the PUSCH transmission.

Abstract: Methods and apparatuses for reporting of time-domain channel correlation properties are provided. A method includes receiving a configuration about a CSI report. The configuration includes information about (i) M non-zero power (NZP) CSI reference signal (RS) resources for tracking, (ii) a number (K) of time-domain correlation values, and (iii) delay values ?k for k=0,1, . . . , K?1. The method further includes, based on the configuration: measuring the M NZP CSI-RS resources for tracking, determining, based on the measurement, the K time-domain correlation values, wherein a k-th correlation value is between two CSI-RS transmission occasions that are separated by one of the delay values ?k, and quantizing a value for an amplitude of each of the K time-domain correlation values. The method further includes transmitting the CSI report including an indicator, for each of the K time-domain correlation values, indicating the quantized value of the amplitude.

Abstract: A method for operating a user equipment (UE) for aperiodic channel state information reference signal (CSI-RS) reception comprises receiving aperiodic CSI-RS configuration information including a CSI-RS triggering offset; receiving downlink control information (DCI) via a physical downlink control channel (PDCCH), where the DCI triggers an aperiodic CSI-RS; and determining the CSI-RS triggering offset based on the CSI-RS configuration information, wherein the CSI-RS triggering offset is configured from a first set when ?PDCCH<?CSIRS, and the CSI-RS triggering offset is configured from a second set when ?PDCCH>?CSIRS, wherein ?PDCCH and ?CSIRS are subcarrier spacing configurations for the PDCCH and the aperiodic CSI-RS, respectively, and receiving the aperiodic CSI-RS in a slot KS determined based on the CSI-RS triggering offset, a slot containing the triggering DCI, and the subcarrier spacing configurations (?PDCCH and ?CSIRS).

Abstract: A method for a channel state information (CSI) feedback comprises receiving CSI feedback configuration information for the CSI feedback including a spatial channel information indicator based on a linear combination (LC) codebook, wherein the spatial channel information comprises at least one of a downlink channel matrix, a covariance matrix of the downlink channel matrix, or at least one eigenvector of the covariance matrix of the downlink channel matrix; deriving the spatial channel information indicator using the LC codebook that indicates a weighted linear combination of a plurality of basis vectors or a plurality of basis matrices as a representation of at least one of a downlink channel matrix, a covariance matrix of the downlink channel matrix, or at least one eigenvector of the covariance matrix of the downlink channel matrix; and transmitting over an uplink channel, the CSI feedback including the spatial channel information indicator.

Abstract: Methods and apparatuses for beam measurement and reporting. A method of operating a user equipment includes receiving information indicating associations between a set of transmission configuration (TCI) states and reference signals (RSs) for beam measurement, respectively, receiving a TCI state from the set of TCI states for beam indication, and determining, in response to reception of the TCI state, a RS for beam measurement based on the TCI state and the information. The method further includes transmitting or receiving the RS for beam measurement, and based on the RS being a downlink (DL) RS, measuring the DL RS and determining a measurement report; and transmitting the measurement report.

Abstract: A method for operating a user equipment (UE) comprises receiving configuration information on a set of transmission configuration indicator (TCI) states, receiving a TCI state indication associated with downlink (DL) transmissions in a plurality of downlink (DL) time slots, decoding the TCI state indication, and applying the TCI state indication to a reception of the DL transmissions in the plurality of DL time slots.

Abstract: A method for operating a user equipment (UE) comprises receiving, from a base station (BS), CSI feedback configuration information; determining, based on the CSI feedback configuration information, CSI feedback including, for each layer l of a total number of ? layers, an indicator i1,8,l indicating an index of a strongest coefficient among KNZ,l coefficients, wherein l?{1, . . . , ?} is a layer index, ??1 is a rank value, and KNZ,l is a number of non-zero coefficients for layer l; determining a payload of the indicator i1,8,l for each layer l based on the rank value; and transmitting, to the BS, over an uplink (UL) channel, the CSI feedback including the indicator i1,8,l for each layer l of the total number of ? layers.

Abstract: Apparatuses and methods for high resolution CSI codebook is provided. The method includes receiving configuration information about a channel state information (CSI) report, the configuration information including a parameter d?1, where d is a number of principal components; determining left principal component vectors; determining right principal component vectors; determining principal singular values; and transmitting the CSI report including a precoding matrix indicator (PMI), the PMI indicating the left principal component vectors, the right principal component vectors, and the principal singular values, wherein at least one of the left principal component vectors, the right principal component vectors, and the principal singular values are selected from adaptive codebooks.

Abstract: Methods and apparatuses for support of machine learning (ML) or artificial intelligence (AI) assisted channel state information (CSI) feedback. A method performed by a user equipment (UE) includes transmitting capability information indicating a capability of the UE to support a ML based parameter configuration associated with CSI reports; receiving configuration information that indicates parameters for the ML based parameter configuration associated with the CSI reports; and receiving CSI reference signals (RSs). The method further includes measuring the CSI-RSs; determining, based on the configuration information, the measured CSI-RSs, and information related to localized observations of channel statistics in one or more domains, configuration parameters in the one or more domains for the CSI reports; determining, based on the configuration parameters in the one or more domains, a CSI report; and transmitting the CSI report.

Abstract: Methods and apparatuses for a multi-beam downlink and uplink wireless system. A method of a user equipment includes receiving configuration information for one or more transmission configuration indication (TCI) states and corresponding TCI state identifiers (IDs) and receiving one or more TCI state IDs. The method also includes determining, based on the one or more TCI state IDs, at least one of one or more first spatial domain filters for reception of one or more layers, respectively, of a downlink channel and one or more second spatial domain filters for transmission of one or more layers, respectively, of an uplink channel. The method further includes at least one of receiving the one or more layers of the downlink channel using the one or more first spatial domain filters, respectively, and transmitting the one or more layers of the uplink channel using the one or more second spatial domain filters, respectively.

Abstract: Apparatuses and methods for multi-stage UL precoding are provided. The method includes receiving configuration information about resource allocation for an uplink (UL) transmission, the configuration information indicating: allocated resources for an UL transmission, and UL precoding information for the UL transmission on the allocated resources, wherein the UL precoding information indicates: an update precoding matrix V, and basis vectors and coefficients for the update precoding matrix V; determining an UL precoding matrix for the UL transmission based on the update precoding matrix V and a previous UL precoding matrix; and performing UL transmission on the allocated resources using the UL precoding matrix.

Abstract: Apparatuses and methods for frequency selective uplink precoding are provided. The method includes receiving configuration information about resource allocation for an uplink transmission, the configuration information indicating: allocated resources for uplink transmission, and uplink precoding information for G antenna port groups for the uplink transmission on the allocated resources, wherein the uplink precoding information indicates: SD basis vectors, FD basis vectors, coefficients for (SD, FD) basis vector pairs, and two components for the coefficients across the G antenna port groups; based on the uplink precoding information, applying uplink precoding for the G antenna port groups; and performing uplink transmission on the allocated resources according to the configuration information.

Abstract: A method of a user equipment (UE) in a wireless communication system is provided. The method comprises: receiving, from at least one base station (BS) of a group of (N) BSs, channel state information (CSI) configuration information including a number of uplink control information (UCI) parts for a CSI reporting; identifying the number of UCI parts for the CSI reporting; determining a CSI report based on the identified number of UCI parts; identifying one or more BSs in the group of (N) BSs to transmit the determined CSI report; and transmitting, to the one or more identified BSs, via an uplink channel, a UCI including the determined CSI report, wherein the UCI includes the identified number of UCI parts each of which includes a part of the determined CSI report.

Abstract: Apparatuses and methods for determining bandwidth for transmission of sounding reference signal (SRS) resources in wireless networks. A method performed includes receiving a configuration about transmission of a SRS resource, the configuration including information about a SRS sequence length of NFHBW>1 and frequency hopping parameters nb and Nb , where: NFHBW is a number of an SRS bandwidth and NFHBW>1, nb is a frequency position index, and Nb is a value associated with a frequency-hopping pattern. The method further includes determining, based on the SRS sequence length and the frequency hopping parameters, a bandwidth for transmission of the SRS resource over time and transmitting, based on the determined bandwidth, the SRS resource over time.

Abstract: Apparatuses and methods for SRS enhancement for interference randomization in wireless networks. A method performed by a user equipment (UE) includes receiving a configuration about a sounding reference signal (SRS) resource. The configuration includes information about a cyclic shift offset?{0,1, . . . , nSRSCS,max?1} and a transmission-comb offset?{0,1, . . . , KTC?1}. nSRSCS,max is a maximum number of cyclic shifts and KTC is a transmission comb number. The SRS resource is associated with a plurality of antenna ports. The method further includes determining, based on a first pseudo-random sequence, the cyclic shift offset for each of the plurality of antenna ports; determining, based on a second pseudo-random sequence, the transmission-comb offset for each of the plurality of antenna ports; and transmitting, based on the cyclic shift offset and the transmission-comb offset, the SRS resource.