Abstract: A method of a user equipment (UE) in a wireless communication system is provided, the method comprises receiving, from a base station (BS), configuration information including a number of total beam quantities (N) and a number of selected beam quantities (L), wherein L?N; calculating an index indicating L selected beam quantities out of N total beam quantities based on the configuration information and a predefined mapping table including combinatorial binomial coefficient values, C ? ( x , y ) = ( x y ) (i.e., x choose y); and transmitting, to the BS, the index indicating the L selected beam quantities.

Abstract: A method for operating a user equipment comprises receiving configuration information including information on a beam indication indicating N uplink (UL) transmit beams, where N>1; receiving the beam indication; determining whether an event is detected; selecting a beam from the N UL transmit beams based on whether the event is detected or not; and transmitting an UL transmission using the selected beam, wherein the beam refers to a spatial property used to receive or transmit a source reference signal (RS).

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: A method for operating a user equipment (UE) comprises transmitting UE capability information including a full power transmission capability, wherein the full power transmission capability includes information (I) to indicate multiple transmit precoding matrix indicator (TPMI) groups that deliver full power; receiving configuration information for a physical uplink shared channel (PUSCH) transmission; receiving a TPMI indicating a precoding matrix and a number of layers for the PUSCH transmission; determining the PUSCH transmission based on the configuration information; determining a power level for the PUSCH transmission, wherein the power level corresponds to full power if the TPMI is included in one of the multiple TPMI groups that deliver full power; and transmitting the PUSCH transmission with the determined power level.

Abstract: Methods and apparatuses for interference management in a wireless communication system. A method for operating a user equipment (UE) includes receiving configuration information about I. I is interference information for interfering Nint remote radio heads (RRHs), where Nint?N?1. The configuration information indicates a number of RRHs, N>1. The method further includes determining, based on the interference information I, a downlink (DL) spatial filter using P antenna ports, where P>1, and receiving DL data using the determined DL spatial filter.

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: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Embodiments herein disclose methods for managing CSI feedback compression in wireless network by base station. The method includes transmitting at least one pilot symbol over first window. The method includes receiving at least one of a first and second type feedback from a UE at an end of the first window or after the first window. The method includes receiving the compressed CSI feedback based on predefined precoder weights in the first window. The method includes computing and predicting at least one precoder weight for the UE in at least one time instant in a second window for at least one sub-band of the UE based on the at least one of the first and second type feedback. The method includes managing the received CSI feedback compression based on the predicted precoder weight.

Abstract: A method for operating a user equipment (UE) comprises receiving information about a downlink (DL) transmission transmitted from NRRH>1 RRHs, wherein: NRRH=number of remote radio heads (RRHs), RRH r comprises a group of antenna ports, and r=1, . . . , NRRH; receiving the DL transmission; and decoding the information about the DL transmission; wherein the DL transmission is based on a scheme that is a combination of a precoding scheme and a diversity scheme, wherein the precoding scheme corresponds to applying an intra-RRH precoder component to antenna ports within an RRH, and wherein the diversity scheme corresponds to applying an inter-RRH diversity component to antenna ports across RRHs.

Abstract: Apparatuses and methods for multi-stage downlink control information (DCI) for uplink (UL) precoding in a wireless communication system. A method for operating a user equipment (UE) receiving, via a two-stage DCI framework, configuration information for transmission of an UL signal. The configuration information includes allocated resources for the UL signal transmission and UL precoding information. The method further includes applying, based on the UL precoding information, UL precoding for the transmission of the UL signal and transmitting the precoded UL signal on the allocated resources. The two-stage DCI framework includes a first-stage DCI, X1, and a second-stage DCI, X2. The first-stage DCI, X1, includes at least one of first information associated with the second-stage DCI and a first part of the configuration information. The second-stage DCI, X2, includes at least one of second information based on the first information and a second part of the configuration information.

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: Method and apparatus for high-resolution channel state information (CSI) reporting in advanced wireless communication systems. A method of operating a user equipment (UE) includes selecting, from a full basis set comprising N bases for a plurality of v layers, an intermediate basis set comprising N? bases that are common among the plurality of v layers and selecting, from the selected intermediate basis set, a basis subset comprising Ml bases for each layer l of the plurality of v layers. The method further includes transmitting, to a base station (BS), indices of the N? bases included in the selected intermediate basis set and indices of the Ml bases included in the selected basis subsets. N, N?, and Ml are positive integers; N?<N; Ml<N?; l?{0, 1 . . . , v?1}; and v is a rank value.

Abstract: A method for operating a UE comprises receiving configuration information including a list of CCs and a set of TCI states; receiving, based on the configuration information, a TCI state update via a medium, wherein: the TCI state update is common for a first subset of CCs, the first subset of CCs includes n ? N CCs, and N = a number of CCs in the list of CCs; and for each CC(i) in the first subset of CCs, determining a beam based on the TCI state update, and applying the beam for a reception of a downlink control channel or a downlink data channel associated with the CC(i), wherein i is an index and takes a value from {1, 2, ..., n}, wherein the beam is determined based on a spatial quasi-co-location property used to receive or transmit a source RS indicated via the TCI state update.

Abstract: A method for operating a UE for CSI reporting is provided. The method comprises receiving configuration information for a CSI report, determining the CSI report comprising a first CSI part and a second CSI part, the second CSI part including a precoding matrix indicator (PMI), the PMI comprising a plurality of PMI components, wherein some of the PMI components comprise sub-components, determining priority values for the sub-components of the some of the PMI components, partitioning the second CSI part into Group 0, Group 1, and Group 2 such that the sub-components of the some of the PMI components are divided into Group 1 and Group 2 based on the determined priority values for the sub-components, and transmitting the first CSI part and Group 0 or (Group 0, Group 1) or (Group 0, Group 1, Group 2) of the second CSI part based on a resource allocation for the CSI report.

Abstract: Methods and apparatuses for uplink multi-beam operation. A method for operating a user equipment (UE) includes receiving, from a base station, an aperiodic reference signal (RS) trigger and, at a later time instant, an uplink (UL) beam indication. The method further includes decoding the aperiodic RS trigger and decoding the UL beam indication. The method includes determining, from the UL beam indication, a transmit spatial filter applied to a signal to be transmitted on a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) and transmitting, to the base station, the signal on the PUSCH or the PUCCH. The transmit spatial filter corresponds to a reference RS. The UL beam indication includes a state of a transmit configuration associated with the reference RS.

Abstract: Methods and apparatuses for interference measurement. A method for operating a user equipment (UE) includes receiving configuration information on at least three reference signal (RS) resources. Two of the at least three RS resources correspond to channel state information interference measurement (CSI-IM) resources. The method further includes measuring interference based on the CSI-IM resources, calculate a beam metric based on the measured interference, and transmitting the beam metric.

Abstract: Apparatuses and methods for beam recovery operations in a wireless communication system. A method for operating a user equipment (UE) includes transmitting a reference signal (RS) resource index (q_new), receiving an indication of a unified transmission configuration indication (TCI) state, and receiving a beam failure recovery response (BFRR). The method further includes determining, based on the q_new and the BFRR, antenna port quasi co-location (QCL) parameters for: monitoring a physical downlink control channel (PDCCH), receiving a physical downlink shared channel (PDSCH), and receiving a channel state information RS (CSI-RS) and determining, based on the q_new and the BFRR, a spatial domain filter for transmitting: a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), and a sounding RS (SRS). The q_new corresponds to a synchronization signal block (SSB) resource index or a CSI-RS resource configuration index.

Abstract: Methods and apparatuses for uplink (UL) transmission are disclosed. The method comprises transmitting a UE capability information including information about (i) a number of antenna ports P>4, and (ii) transmission of a non-codebook-based (NCB-based) physical uplink shared channel (PUSCH); receiving a configuration about NSRS sounding reference signal (SRS) resources for transmission of the NCB-based PUSCH; transmitting the NSRS SRS resources; receiving an indication indicating a selection of k out of NSRS SRS resources; and transmitting the NCB-based PUSCH based on the k SRS resources, wherein: each SRS resource comprises one SRS port, a maximum value of a number of layers (Lmax) for the NCB-based PUSCH transmission is configured, 1?NSRS?P, 1?k?NSRS, and 1?k?Lmax.

Abstract: Methods and apparatuses for beam measurement and reporting. A method for operating a user equipment (UE) includes receiving information about a report, the report including at least one capability value about an uplink (UL) transmission; determining the at least one capability value; determining the report including an indicator indicating the at least one capability value; and transmitting the report.

Abstract: Methods and apparatuses for beam management after channel setup. A method of operating a user equipment (UE) includes receiving at least one of synchronization signal/physical broadcast channel block (SSB) or channel state information reference signal (CSI-RS), measuring the at least one of the SSB or the CSI-RS, and determining downlink (DL) quasi-co-location (QCL) properties for DL communication based on the at least one of the SSB or the CSI-RS. The method further includes determining an uplink (UL) spatial domain filter for UL communication, receiving DL channels using the determined DL QCL properties until only one of only one joint TCI state or only one DL TCI state is configured, activated, or indicated to the UE, and transmitting UL channels using the determined UL spatial domain filter until only one of only one joint TCI state or only one UL TCI state is configured, activated, or indicated to the UE.

Abstract: A method for operating a user equipment (UE) comprises receiving, from a serving cell, configuration information for measuring K resource reference signals (RSs) and reporting a beam report, measuring the K resource RSs, determining the beam report based on a metric, where the beam report includes an indicator indicating at least one of the K resource RSs, and transmitting the determined beam report, wherein 1?K, wherein the K resource RSs comprises a first subset and a second subset, at least one resource RS in the first subset is transmitted from a serving cell in a set of serving cells and at least one resource RS in the second subset is transmitted from a non-serving cell in a set of non-serving cells.