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: 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.

Abstract: Methods and apparatuses for measurement configurations for reporting in multi-transmit-receive point (TRP) communication systems. A method for operating a user equipment (UE) includes receiving first information for a first set of frequency subbands for FSBM and receiving second information related to a CSI resource setting. The CSI resource setting includes a first CSI resource set and a second CSI resource set. The method further includes identifying, based on the first and second information, a first subset of frequency subbands from the first set of frequency subbands for the first CSI resource set and a second subset of frequency subbands from the first set of frequency subbands for the second CSI resource set. The method further includes determining, based on the identification, one or more first RS resources from the first CSI resource set and one or more second RS resources from the second CSI resource set for FSBR.

Abstract: Calibration in distributed multiple input multiple output (MIMO) networks. A method performed by a first base station (BS) includes receiving a first uplink (UL) reference signal (RS) and determining, based on the first UL RS and a second UL RS, a first phase offset for transmission of a first downlink (DL) RS to a user equipment (UE). The second UL RS is associated with a second BS. The first phase offset of the first DL RS is relative to a second DL RS associated with the second BS. The method further includes transmitting the first DL RS with the first phase offset; receiving UE feedback associated with the first DL RS and the second DL RS; and determining, based on the first phase offset and the received feedback, for a DL data transmission to the UE, a second phase offset between transmissions of the first BS and the second BS.

Abstract: Methods and apparatuses for fast beam indication. A method of operating a UE includes receiving a number (M) of transmission configuration indicator (TCI)state code points activated by a medium access control element (MAC CE) and, if the UE is configured to be indicated TCI state code points on DL control information (DCI) and M>1, receiving the DCI that indicates at least one TCI state code point from the M TCI state code points and determining a TCI state to apply to at least one of downlink (DL) channels and uplink (UL) channels. The method further includes updating one or more spatial filters for at least one of the DL channels and the UL channels based on the determined TCI state and at least one of receiving and transmitting the DL channels and the UL channels, respectively, based on the updated one or more spatial filters.

Abstract: A method for operating a user equipment (UE) comprises receiving configuration information for at least one channel state information reference signal (CSI-RS) resource that comprises PCSIRS CSI-RS ports; receiving configuration information for channel state information (CSI) feedback that is based on Q precoding dimensions, wherein: there is a mapping between the PCSIRS CSI-RS ports and the Q precoding dimensions, and PCSIRS?Q; measuring the PCSIRS CSI-RS ports; determining a measurement for the Q precoding dimensions based on the mapping and the measurement for the PCSIRS CSI-RS ports; determining a CSI feedback based on the measurement for the Q precoding dimensions; and transmitting, over an uplink (UL) channel, the determined CSI feedback.

Abstract: A method for operating a user equipment (UE) comprises receiving configuration information for a CSI report. The configuration information includes information to: configure a codebook and parameters for the codebook, the codebook comprising a precoding matrix indicator (PMI) indicating a set of components S to represent N3 precoding matrices, where N3?1; and partition the PMI into two subsets, a first PMI subset indicating a first subset of components S1 from the set of components S, and a second PMI subset indicating a second subset of components S2 from the set of components S different from the first subset of components S1. The method further comprises determining the CSI report based on the configuration information, the CSI report including the second PMI subset indicating the second subset of components S2, and transmitting the determined CSI report over an uplink (UL) channel.

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) for channel state information (CSI) feedback in a wireless communication system is provided. The method comprises receiving, from a base station (BS), CSI reference signals (CSI-RSs) and CSI feedback configuration information, estimating a channel based on the received CSI-RSs, determining, based on the estimated channel and the CSI feedback configuration information, a number of non-zero coefficients (KlNZ) for each layer (l) of a total number of ? layers, wherein ??1 is a rank value, and a sum of the KlNZ across each of the ? layers as a total number of non-zero coefficients (KNZ), where KNZ=?l=1?KlNZ. The method further comprises transmitting, to the BS, the CSI feedback including the KNZ value over an uplink (UL) channel.

Abstract: Systems and methods for joint and separate beam indication in a wireless communication system. A method of operating a user equipment (UE) includes receiving configuration information for a first set of transmission configuration indicator (TCI) states for joint TCI states or downlink (DL) TCI states and for a second set of TCI states for uplink (UL) TCI states if configured to operate with separate beam indication; receiving M TCI state code points; and if M>1, receiving downlink control information (DCI) that indicates at least one TCI state code point from the M TCI state code points. The method further includes determining a TCI state to apply to at least one of DL channels and UL channels; updating one or more spatial filters based on the determined TCI state; and at least one of receiving and transmitting the DL channels and the UL channels, respectively, based on the updated spatial filters.

Abstract: A method of operating a user equipment (UE) includes receiving first information for a physical cell identifier (PCI) different from a serving cell PCI; receiving second information for source or measurement reference signals (RSs) for the PCI; determining, based on one or more transmission configuration indicator (TCI) states, the first information, and the second information, a reception spatial domain filter for reception of at least one of downlink (DL) RSs and channels from the PCI; and measuring, based on the first information and the second information, the measurement RS. The method further includes determining, based on the measured measurement RSs, the first information, and the second information, a beam report and transmitting the beam report for the PCI on an uplink (UL) channel. A beam refers to a spatial property used to receive or transmit a source RS or a channel.

Abstract: Methods and apparatuses for channel and interference measurement. A method for operating user equipment (UE) includes receiving, from a base station, configuration information for a channel measurement resource (CMR) and N interference measurement resources (IMRs) and configuration information for a channel state information (CSI) reporting. The CSI reporting configuration information indicates a selection of a signal-to-interference-plus-noise ratio (SINR). The method further includes receiving reference signals associated with the CMR and the N IMRs, measuring the reference signals for calculating the CSI reporting, and transmitting the CSI reporting. The CSI reporting includes M SINRs each associated with an interference hypothesis. N is an integer greater than or equal to 2. M is an integer greater than or equal to 1. The CMR is a synchronization signal block (SSB) or a non-zero power channel state information reference signal (NZP CSI-RS). The N IMRs are NZP CSI-RSs.

Abstract: Methods and apparatus for configuring measurement and reporting settings in a wireless communication system. A method performed by a user equipment (UE) includes receiving first information for a channel state information (CSI) reporting setting to enable group based frequency selective beam reporting and receiving second information indicating a set of frequency subbands for the CSI reporting setting. The method further includes determining, based on the first and second information, one or more groups of resource indicators and transmitting, in a first beam report, the one or more groups of resource indicators. Each group of the one or more groups of resource indicators respectively corresponds to at least one frequency subband from the set of frequency subbands. A resource indicator from the one or more groups of resource indicators is a synchronization signal block resource indicator (SSBRI) or a CSI reference signal resource indicator (CRI).

Abstract: Methods and apparatuses for frequency selective beam measurement and reporting (FSBMR) in a wireless communication system. A method for operating a user equipment (UE) includes receiving a configuration for a channel state information (CSI) reference signal (RS) resource and a CSI reporting setting to enable FSBMR. The method further includes receiving first information indicating a first set of frequency subbands for the CSI-RS resource and receive second information indicating a second set of frequency subbands for the CSI reporting setting. The method further includes measuring, based on the configuration and the first information, the CSI-RS resource and determining, based on the configuration, the measurement, and the second information, a beam report including one or more beam metrics.

Abstract: Method and apparatuses for supporting or utilizing transmission configuration indication signaling. A method for operating a user equipment (UE) includes receiving a configuration enabling frequency selective beam indication (FSBI) and receiving, in a transmission configuration indication (TCI) state, a plurality of quasi co-location (QCL) parameters corresponding to a plurality of frequency subbands. The method further includes determining, based on the plurality of frequency subbands and the plurality of QCL parameters, one or more reception or transmission filters for receiving or transmitting, respectively, channels in the plurality of frequency subbands.

Abstract: Apparatuses and methods for frequency selective beam management (FSBM). A method for operating a user equipment (UE) includes receiving first information indicating one or more channel state information (CSI) reference signal (RS) resources for FSBM and receiving second information indicating a correspondence between the one or more CSI-RS resources and a plurality of frequency subbands. The method further includes determining, based on the first information, the one or more CSI-RS resources for FSBM and identifying, based on the second information, the correspondence between the one or more CSI-RS resources and the plurality of frequency subbands.