Terminal, wireless communication method and system

Abstract

The purpose of the present invention is to properly perform communications using information pertaining to a reference signal for channel state information reported from a terminal. An aspect of the present disclosure relates to a terminal comprising: a control unit for controlling a report of a plurality of items of first information pertaining to a combination of a channel state information resource with respect to a band combination and a number of ports with respect to the band combination, and second information pertaining to a number of ports for each channel state information resource with respect to the band combination; and a transmission unit for transmitting the first information and the second information.

Description

[Technical field]

[0001] The present disclosure relates to a terminal, a wireless communication method, and system Regarding. [Background technology]

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been specified for the purpose of achieving higher data rates and lower latency (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) has been specified for the purpose of achieving higher capacity and greater sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), New Radio (NR), 3GPP Rel. 15 or later) are also being considered. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention [Problem to be solved by the invention]

[0005] Rel.15 NR supports reporting of UE capability information regarding resources / ports of reference signals (e.g., CSI-RS) for Channel State Information (CSI) from the UE to the network.

[0006] For example, the UE reports information on the number of CSI-RS resources / ports for each band and information on the number of CSI-RS resources / ports for each combination of multiple bands (band combination (BC)). The network (e.g., base station) controls the configuration of the CSI-RS resources / ports based on the information (or parameters) reported from the UE.

[0007] However, there has been no sufficient consideration as to how the setting of the number of CSI-RS resources / ports is controlled based on information (or parameters) reported from the UE. If the capability information related to the number of CSI-RS resources / ports reported from the UE is inappropriate, or if appropriate CSI-RS transmission is not performed based on the capability information reported from the UE, communication quality may deteriorate.

[0008] Therefore, the present disclosure relates to a terminal, a wireless communication method, and a method for appropriately performing communication using information on a reference signal for channel state information reported from a terminal. system One of the aims is to provide. [Means for solving the problem]

[0009] A terminal according to one embodiment of the present disclosure includes a control unit that controls a parameter including a combination of the maximum number of simultaneous channel state information reference signal resources in an active bandwidth portion (BWP) of all component carriers (CCs) and the total number of CSI-RS ports of the simultaneous channel state information reference signal resources in the active BWP of all CCs, and a parameter including the maximum number of ports per resource, so as to be reported for each band combination; and a transmission unit that transmits the parameter including the combination and the parameter including the maximum number of ports per resource, and the control unit controls to report information regarding support of a capability to report the maximum number of ports per resource for each band combination as part of the terminal capability. and the control unit supports reporting of the same maximum number of ports per resource for a plurality of the combinations. do. Effect of the Invention

[0010] According to one aspect of the present disclosure, it is possible to appropriately perform communication using information regarding a reference signal for channel state information reported from a terminal. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing an example of existing parameters related to CSI-RS reported by a UE. [Diagram 2] FIG. 2 is a diagram showing another example of existing parameters related to CSI-RS reported by a UE. [Diagram 3] FIG. 3 is a diagram illustrating an example of an active period of a CSI-RS. [Figure 4] FIG. 4 is a diagram showing an example of CSI-RS resource / port configuration for band A / band B. [Diagram 5] 5A and 5B are diagrams illustrating an example of reporting the number of CSI-RS resources / ports according to the first embodiment. [Figure 6] 6A and 6B are diagrams showing an example of parameters related to CSI-RS reported by a UE. [Figure 7]7A and 7B are diagrams showing other examples of parameters related to CSI-RS reported by the UE. [Figure 8] FIG. 8 is a diagram illustrating another example of reporting the number of CSI-RS resources / ports according to the first embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of the number of CSI-RS resources / ports and parameters reported by a UE according to the first embodiment. [Figure 10] FIG. 10 is a diagram illustrating another example of the number of CSI-RS resources / ports and parameters reported by the UE according to the first embodiment. [Figure 11] FIG. 11 is a diagram illustrating another example of the number of CSI-RS resources / number of ports reported by the UE according to the first aspect. [Figure 12] FIG. 12 is a diagram illustrating another example of the number of CSI-RS resources / ports and parameters reported by the UE according to the first aspect. [Figure 13] FIG. 13 is a diagram illustrating another example of the number of CSI-RS resources / ports and parameters reported by the UE according to the first aspect. [Figure 14] FIG. 14 is a diagram illustrating another example of the number of CSI-RS resources / number of ports reported by the UE according to the first aspect. [Figure 15] FIG. 15 is a diagram illustrating another example of the number of CSI-RS resources / number of ports reported by the UE according to the first aspect. [Figure 16] 16A to 16D are diagrams illustrating multiple cases of the number of CSI-RS resources / ports reported by a UE. [Figure 17] FIG. 17 is a diagram illustrating an example of the number of CSI-RS resources / number of ports reported by a UE according to the second aspect. [Figure 18] FIG. 18 is a diagram illustrating another example of the number of CSI-RS resources / number of ports reported by a UE according to the second aspect. [Figure 19] FIG. 19 is a diagram illustrating an example of the number of CSI-RS resources / number of ports reported by a UE according to the fourth example. [Figure 20]FIG. 20 is a diagram illustrating an example of a report of the number of ports / the number of CSI-RS resources / the number of ports for each number of CSI resources to a BC according to the fifth example. [Figure 21] FIG. 21 is a diagram illustrating an example of a report of the number of ports / the number of CSI-RS resources / the number of ports for each number of CSI resources to a BC according to the sixth example. [Figure 22] FIG. 22 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 23] FIG. 23 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 24] FIG. 24 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Diagram 25] FIG. 25 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] (CSI report or reporting) In Rel.15 NR, a terminal (also referred to as a user terminal, User Equipment (UE), etc.) generates (also referred to as determining, calculating, estimating, measuring, etc.) channel state information (CSI) based on a reference signal (RS) (or a resource for the RS), and transmits (also referred to as reporting, feeding back, etc.) the generated CSI to a network (e.g., a base station). The CSI may be transmitted to the base station, for example, using an uplink control channel (e.g., a Physical Uplink Control Channel (PUCCH)) or an uplink shared channel (e.g., a Physical Uplink Shared Channel (PUSCH)).

[0013] The RS used to generate CSI may be at least one of, for example, a Channel State Information Reference Signal (CSI-RS), a Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, a Synchronization Signal (SS), a DeModulation Reference Signal (DMRS), etc.

[0014] The CSI-RS may include at least one of a Non Zero Power (NZP) CSI-RS and a CSI-Interference Management (CSI-IM). The SS / PBCH block is a block including an SS and a PBCH (and a corresponding DMRS), and may be referred to as an SS block (SSB), etc. The SS may include at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).

[0015] The CSI may include at least one parameter (CSI parameter) such as a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS Resource Indicator (CRI), a SS / PBCH Block Indicator (SSBRI), a Layer Indicator (LI), a Rank Indicator (RI), L1-RSRP (Layer 1 Reference Signal Received Power), L1-RSRQ (Reference Signal Received Quality), L1-SINR (Signal-to-Noise and Interference Ratio or Signal to Interference plus Noise Ratio), and L1-SNR (Signal to Noise Ratio).

[0016] The UE may receive information related to CSI reporting (report configuration information) and control CSI reporting based on the report configuration information. The report configuration information may be, for example, "CSI-ReportConfig" of an information element (IE) of Radio Resource Control (RRC). In the present disclosure, the RRC IE may be rephrased as an RRC parameter, a higher layer parameter, or the like.

[0017] The reporting configuration information (eg, the RRC IE "CSI-ReportConfig") may include, for example, at least one of the following: Information about the type of CSI report (report type information, e.g., RRC IE "reportConfigType") Information on one or more quantities of CSI to be reported (one or more CSI parameters) (report quantity information, e.g., RRC IE "reportQuantity") Information on the RS resource used to generate the amount (the CSI parameter) (resource information, for example, the RRC IE "CSI-ResourceConfigId") Information about the frequency domain for which CSI is reported (frequency domain information, e.g., RRC IE "reportFreqConfiguration")

[0018] For example, the report type information may indicate a periodic CSI (P-CSI) report, an aperiodic CSI (A-CSI) report, or a semi-persistent CSI (SP-CSI) report.

[0019] Furthermore, the reporting amount information may specify at least one combination of the above CSI parameters (for example, CRI, RI, PMI, CQI, LI, L1-RSRP, etc.).

[0020] The resource information may also be an ID of a resource for RS. The resource for RS may include, for example, a non-zero power CSI-RS resource or an SSB, and a CSI-IM resource (for example, a zero power CSI-RS resource).

[0021] The UE performs channel estimation using the received RS to estimate a channel matrix H. The UE feeds back a propagation mediation index (PMI) that is determined based on the estimated channel matrix.

[0022] The PMI may indicate a precoder matrix (also referred to as a precoder) that the UE considers appropriate for use in downlink (DL) transmission to the UE. Each value of the PMI may correspond to one precoder matrix. A set of values ​​of the PMI may correspond to a set of different precoder matrices called a precoder codebook (also referred to as a codebook).

[0023] In the space domain, a CSI report may include one or more types of CSI. For example, the CSI may include at least one of a first type (type-1 CSI) used for selecting a single beam and a second type (type-2 CSI) used for selecting a multi-beam. A single beam may be rephrased as a single layer, and a multi-beam may be rephrased as multiple beams. In addition, type-1 CSI does not assume multi-user multiple input multiple output (MIMO), and type-2 CSI may assume multi-user MIMO.

[0024] The codebook may include a codebook for type-1 CSI (also referred to as a type-1 codebook, etc.) and a codebook for type-2 CSI (also referred to as a type-2 codebook, etc.). Furthermore, the type-1 CSI may include type-1 single-panel CSI and type-1 multi-panel CSI, and different codebooks (type-1 single-panel codebook, type-1 multi-panel codebook) may be defined for each.

[0025] In the present disclosure, Type 1 and Type I may be interpreted as interchangeable. In the present disclosure, Type 2 and Type II may be interpreted as interchangeable.

[0026] The uplink control information (UCI) type may include at least one of a hybrid automatic repeat reQuest ACKnowledgement (HARQ-ACK), a scheduling request (SR), and a CSI. The UCI may be carried by a PUCCH or a PUSCH.

[0027] The UE may report a list of supported CSI-RS resources for each CSI codebook type, e.g., the UE may report information regarding the maximum number of transmit ports per resource, the maximum number of resources per band, and the total number of transmit ports per band (e.g., {maxNumberTxPortsPerResource, maxNumberResourcesPerBand, totalNumberTxPortsPerBand}).

[0028] The maximum number of transmit ports per resource (maxNumberTxPortsPerResource) indicates the maximum number of transmit ports in a resource (e.g., the maximum number of transmit ports that can be simultaneously configured in a CSI-RS resource). The maximum number of resources per band (maxNumberResourcesPerBand) indicates the maximum number of resources in all CCs (or cells) in a band (e.g., the maximum number of CSI-RS resources that can be simultaneously configured across all CCs). The total number of transmit ports per band (totalNumberTxPortsPerBand) indicates the total number of transmit ports in all CCs in a band (e.g., the total number of transmit ports that can be simultaneously configured across all CCs). Note that CC corresponds to a CC included in a band.

[0029] The UE may report codebook parameters (e.g., codebookParameters) related to the codebook as band parameters (e.g., BandNR parameters) for each band. The codebook parameters may indicate the codebooks supported by the UE and the corresponding parameters. The codebook parameters may include at least one of the following parameters (1)-(4). For example, (1) may be mandatory, and (2)-(4) may be optional.

[0030] (1) Parameters of type 1 single panel codebook (type1 singlePanel) supported by UE (2) Parameters of type 1 multipanel codebook (type1 multiPanel) supported by UE (3) Parameters of type 2 codebook (type2) supported by UE (4) Parameters of a type 2 codebook (type2-PortSelection) having port selection supported by the UE

[0031] Each of the parameters (1) to (4) may include information on a list of CSI-RS resources supported by the UE (supportedCSI-RS-ResourceList). The information on the list of CSI-RS resources may include the above-mentioned list of the following parameters: · Maximum number of transmit ports per resource (maxNumberTxPortsPerResource) ·Maximum number of resources per band (maxNumberResourcesPerBand) Total number of transmit ports per band (totalNumberTxPortsPerBand)

[0032] The above codebook-related parameters (1)-(4) reported by the UE may be referred to as FG2-36 / 2-40 / 2-41 / 2-43. The parameters {maxNumberTxPortsPerResource, maxNumberResourcesPerBand, totalNumberTxPortsPerBand} included in the list of CSI-RS resources may be referred to as triplets (e.g., Triplets).

[0033] Furthermore, a UE that supports a combination of multiple bands may report a predetermined parameter (e.g., UE capability information) for each combination of bands. The combination of bands may be referred to as a Band Combination (BC).

[0034] The specified parameters (e.g., CA-ParametersNR or csi-RS-IM-ReceptionForFeedbackPerBandComb) may include a parameter corresponding to the maximum number of CSI-RS resources in all CCs / active BWPs (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) and a parameter corresponding to the total number of ports of CSI-RS resources in all CCs / active BWPs (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC).

[0035] A parameter corresponding to the maximum number of CSI-RS resources in all CCs / active BWPs (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) indicates the maximum number of CSI-RS resources that are simultaneously configured across all CCs in an active BWP. This parameter limits the total number of CSI-RS resources that the NW can configure across all CCs. The NW may apply this limit in addition to the limit signaled in the maximum number of CSI-RS resources per CC (e.g., maxNumberSimultaneousNZP-CSI-RS-PerCC).

[0036] A parameter corresponding to the total number of ports of CSI-RS resources in all CCs / active BWPs (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC) indicates the total number of ports of CSI-RS resources that are simultaneously configured across all CCs in an active BWP. This parameter limits the total number of ports that the NW can configure across all CCs. The NW may apply this limit in addition to the limit signaled in the total number of ports of CSI-RS resources per CC (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-PerCC).

[0037] The predetermined parameters related to the band combination (BC) reported by the UE (or the predetermined parameters reported for each BC) may be referred to as FG2-33.

[0038] The UE may report predetermined parameters (eg, CA-ParametersNR) (see FIG. 1) for each BC, and may report codebook-related parameters (eg, CodebookParameters) (see FIG. 2) / triplets for each band.

[0039] In the CSI processing criteria, the UE may not be expected to have more active CSI-RS ports or active CSI-RS resources in any slot than the number reported in the capability information. In the case of aperiodic CSI-RS, the CSI-RS (e.g., NZP CSI-RS) resource is active from the reception (e.g., the last symbol) of the PDCCH including the CSI request to the transmission (e.g., the last symbol) of the PUSCH for CSI reporting (see FIG. 3). In the case of periodic CSI-RS, the CSI-RS (e.g., NZP CSI-RS) resource is active from the time the periodic CSI-RS is configured by higher layer signaling to the time the CSI-RS is released.

[0040] The UE reports one or more codebook-related first parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets for each band. For example, assume that the UE reports the following list of first parameters / triplets ({maxNumberTxPortsPerResource, maxNumberResourcesPerBand, totalNumberTxPortsPerBand}) for Band A and Band B: Band A: {16,1,16}, {8,2,12} Band B: {16,1,16}, {8,2,12}

[0041] In this case, when the UE uses a combination of Band A and Band B, it is required to support {16,2,32} and {8,4,24}.

[0042] However, in some cases, common hardware with a certain budget is used for CSI calculation for all bands in one UE, and in such cases, the actual band combination capability of the UE may be lower than the above (e.g., {16,1,16}, {8,2,12}).

[0043] Typically, the codebook parameters are reported for each band, and therefore the CSI processing capability is not shared among the bands supported by the UE. Therefore, if the UE reports the codebook parameters (e.g., maxNumberResourcesPerBand and totalNumberTxPortsPerBand) for each band without considering the band combination, the CSI-RS resources / ports may be configured more than the UE's capabilities when the band combination is performed.

[0044] To avoid such a case, it is considered that the UE reports (under-reports) a value lower than the actual UE capability as the value to be reported for each band. In other words, it is assumed that the UE conservatively determines (underestimates) the value of the first parameter / triplet related to the codebook to be reported for each band, assuming a combination of multiple bands.

[0045] For example, the UE may under-report a first parameter (eg, FG2-36 / 2-40 / 2-41 / 2-43) / triplet for the codebook for Band A and Band B as follows: Band A: {4,1,4} Band B: {4,1,4}

[0046] If a UE under-reports, the number of CSI-RS resources / ports scheduled by the network will be set to a smaller number even when using one band (applying single-band mode). As a result, when the UE applies single-band mode, the CSI-RS resources / ports are set to be smaller than the UE capability, which may result in degradation of communication quality.

[0047] For this reason, it is considered that the UE reports a predetermined parameter related to the CSI process capability taking into account the band combination. For example, the UE reports a parameter corresponding to the maximum number of CSI-RS resources in all CCs / active BWPs (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) and a parameter corresponding to the total number of ports of the CSI-RS resources in all CCs / active BWPs (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC) for each band combination (BC) as described above.

[0048] For example, consider a first parameter for codebook (eg, FG2-36 / 2-40 / 2-41 / 2-43) / predetermined parameter for BC (eg, FG2-33) when reporting triplets as follows for band A and band B: Band A: {16,1,16}, {8,2,12} Band B: {16,1,16}, {8,2,12}

[0049] <Case 1> Assume that the UE reports {2, 16} as the predetermined parameters (second parameters) {maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC, totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC} related to a band combination (e.g., band A+B).

[0050] In this case, the NW can configure one CSI-RS resource corresponding to 8 ports (or one 8-port CSI-RS resource) for band A and one CSI-RS resource corresponding to 8 ports for band B. However, it cannot configure two CSI-RS resources corresponding to 8 ports each for each band (or two CSI reports each having an 8-port CSI-RS resource).

[0051] This is because the maximum number of CSI-RS resources in BC is limited to 2. In addition, when two CSI-RS resources are configured in only one band, the total number of ports is limited to 12, so two 8-port CSI-RSs cannot be configured in one band.

[0052] Also, if reporting for each band is interpreted as being for each band, 8 ports (band A) + 8 ports (band B) can be configured. However, in this case, the UE needs to process 16-port CSI-RS in two bands. Since a UE that shares a CSI processing unit between bands has the same CSI processing capability both within a band and between bands, if reporting {x, 2, 12} for each band, only up to 12 ports can be processed for a total of two CSI-RSs even in multiple bands. Therefore, in order to avoid setting 16-port CSI-RS in two bands as described above, the UE will under-report for each band, such as {x, 2, 6}.

[0053] <Case 2> Assume that the UE reports {1,16} as a given parameter for a band combination (eg, band A+B).

[0054] In this case, the number of CSI-RS resources configured simultaneously in band A and band B is limited to one. Therefore, if a periodic CSI-RS is configured in one band, CSI reporting is not supported in the other band. To support CSI reporting in both bands, aperiodic CSI-RS that do not overlap in the time direction must be configured in both bands. However, even in this case, it is necessary to control the activation of aperiodic CSI-RS in two bands so that it is not activated simultaneously.

[0055] <Case 3> Assume that the UE reports {2,12} as a given parameter for a band combination (eg, band A+B).

[0056] In such a case, it is possible to configure one CSI-RS resource in each band, with four ports in one band and eight ports in the other band (configurations 1 and 2 in Figure 4). Also, by shifting the aperiodic CSI-RS in the time direction (TDM) between Band A and Band B, it is possible to configure one CSI-RS resource corresponding to 12 ports in each band (configuration 3 in Figure 4).

[0057] In case 3, the total number of ports during BC is limited to 12. Therefore, in one band (band A / B), one CSI-RS resource and 16 ports (16-port CSI-RS resource) are not supported in inter-band CA, even if only multiple CCs in a single band are active.

[0058] In this way, the existing reporting method is configured to report one predetermined parameter related to the band combination (for example, to report a common predetermined parameter for different CSI types). However, with this reporting method, there is a risk that the number of CSI-RS resources / ports to be set for each band cannot be appropriately set.

[0059] Therefore, the present inventors have studied the reporting method / interpretation of parameters related to BC and have come up with the idea of ​​this embodiment.

[0060] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication method and aspects according to each embodiment may be applied alone or in combination. In the present disclosure, "A / B" may be read as "at least one of A and B."

[0061] In the following description, a port, a CSI-RS port, and a port for CSI-RS resources may be interchangeable. Also, each band combination (BC) may be each CSI codebook type in addition to each BC.

[0062] (First aspect) In the first aspect, a case will be described in which a plurality of parameters (or a combination of parameters) is reported as a predetermined parameter related to a band combination (for example, FG2-33).

[0063] In the following description, a case is shown in which the maximum number of CSI-RS resources in all CCs / active BWPs (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) and the total number of ports of CSI-RS resources in all CCs / active BWPs (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC) are reported as predetermined parameters related to band combinations (BCs), but this is not limiting. Alternatively, the maximum number of transmission ports for each resource may be reported.

[0064] A configuration is assumed in which multiple combination reports / lists are supported (or permitted) for predetermined parameters (e.g., FG2-33) related to BC. The number of predetermined parameters reported by the UE may be determined based on a predetermined condition (e.g., the number of CSI codebook types (or CSI types)). CSI-RS resources / CSI-RS ports may be reported / configured for each BC and each CSI codebook type.

[0065] The UE may control the transmission of the UE capability information reported for each BC by using at least one of the following reporting methods 1-1 to 1-3.

[0066] <Report method 1-1> For example, the UE may report one or more combinations of {maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC, totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC} for each BC and each CSI codebook type (see Figures 5A and 5B). Figure 5A shows a reporting method of the existing system for reporting one predetermined parameter, and Figure 5B shows a reporting method (also called updated FG2-33 or extended FG2-33) for reporting multiple predetermined parameters.

[0067] In FIG. 5B, the UE reports codebook-related parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets for Band A and Band B as follows: Band A: {16,1,16}, {8,2,12} Band B: {16,1,16}, {8,2,12}

[0068] Furthermore, the following case is shown where two predetermined parameters (for example, update FG2-33) / lists related to BC are reported: Of course, the number of combinations reported is not limited to two, and three or more combinations may be reported. Band A+B: {1,16}, {2,12}

[0069] The UE may report one or more combinations of {maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC, totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC} for each BC and each CSI codebook type (see FIG. 6A). FIG. 6A illustrates a case where a parameter related to the maximum number of CSI-RS resources (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) and a parameter related to the total number of ports (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC) are reported for each BC (and each CSI codebook type). Each list may be specified to be selected from a specific number (see FIG. 6B).

[0070] <Report method 1-2> Alternatively, a parameter (eg, csi-RS-IM-ReceptionForFeedbackPerBandComb) including a predetermined parameter (eg, updated FG2-33) may be reported for each BC and each CSI codebook type (see FIG. 7A).

[0071] <Report method 1-3> Alternatively, a list of parameters (e.g., CA-ParametersNR-v1540) including a parameter (e.g., csi-RS-IM-ReceptionForFeedbackPerBandComb) including a predetermined parameter (e.g., update FG2-33) may be reported for each BC and each CSI codebook type (see FIG. 7B).

[0072] <Report contents> The combination of the predetermined parameters (e.g., FG2-33) related to the BC may be restricted. In other words, only limited combinations may be reported as the predetermined parameters (e.g., updated FG2-33) related to the BC.

[0073] The restriction of the predetermined parameter may be determined based on a codebook-related parameter (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplet. For example, the UE may assume that if the maximum CSI-RS resource values ​​are 1, 2 in Band A and 1, 2 in Band B, then the maximum possible CSI-RS resource values ​​across Bands A+B are at least one or all of the following maximum values ​​#1-#5 that are supported:

[0074] Max #1: Max of either Band A or Band B Max #2: Max of Band A or Band B Max #3: Band A plus Band B (1+1) Max #4: Band A plus Band B (2+1 or 1+2) Max #5: Band A plus Band B (2+2)

[0075] The UE may support the setting of 1, 2, 3, or 4 as the maximum possible CSI-RS resource in the entire band A+B. For example, the UE may report at least one or all of {1,16}, {2,12}, {3,4}, and {4,4} as a predetermined parameter related to BC (see FIG. 8). In this case, the maximum CSI-RS resource value may be limited to 3 or 4 when band combination is applied (and the maximum CSI-RS resource for 1CC is limited to 2).

[0076] Note that, like the number of CSI-RS resources, the number of ports may also be determined based on a codebook-related parameter (eg, FG2-36 / 2-40 / 2-41 / 2-43) / triplet.

[0077] In this way, multiple parameters / lists are reported as predetermined parameters related to BC. This allows multiple CSI-RS resources / ports to be configured for BC, so that the number of CSI-RS resources / ports can be appropriately configured without under-reporting parameters related to the codebook (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets.

[0078] Furthermore, even if one CSI-RS resource number is reported as a specified parameter related to BC, multiple CSI-RS resource numbers may be reported separately, making it possible to configure CSI-RS resources in multiple bands when BC is applied.

[0079] The UE may explicitly notify at least one of information regarding the maximum number of resources (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) and information regarding the total number of ports corresponding to CSI-RS (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC) as a specified parameter related to BC.

[0080] <Reports total number of ports> The UE may be controlled to explicitly report a list of the total number of ports corresponding to CSI-RS, and not to explicitly report information regarding the maximum number of CSI-RS resources (see FIG. 9). In this case, the index of the list may correspond to the number of CSI-RS resources (e.g., 1 to 64).

[0081] For example, the first value in the list may correspond to the total number of CSI-RS ports for one CSI-RS resource, i.e. the total number of reporting ports {16, 8, 4, 2, ...} may correspond to the maximum number of CSI-RS resources {1, 2, 3, 4, ...}, respectively. The ports may be selected from 2 to 256.

[0082] In Fig. 9, 16 CSI-RS ports correspond to one CSI-RS resource, and 8 CSI-RS ports correspond to two CSI-RS resources. In this way, by adopting a configuration in which the maximum number of CSI-RS resources is not explicitly reported, it is possible to suppress an increase in overhead when the UE performs reporting.

[0083] Alternatively, the UE may report the total number of ports for a predetermined number (see FIG. 10). For example, the UE reports the total number of ports for a maximum number of N1 CSI-RS resources (here, 7 (1, 2, 4, 8, 16, 32, 64)). The index of the list may correspond to the maximum number of N1 CSI-RS resources (1, 2, 4, 8, 16, 32, 64).

[0084] For example, the first value in the list may correspond to the total number of CSI-RS ports for one CSI-RS resource, i.e. the total number of reporting ports {16, 8, 4, 2, ...} may correspond to the maximum number of CSI-RS resources {1, 2, 4, 8, ...}, respectively. The CSI-RS ports may be selected from 2 to 256.

[0085] N1 may be predefined in the specifications, or may be set from the network to the UE by higher layer signaling, etc.

[0086] Alternatively, the number of reported N1 and the maximum number of CSI-RS resources corresponding to N1 may be determined based on a codebook-related parameter (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplet reported for each band.

[0087] For example, assume that the maximum number of CSI-RS resources is 1 and 2 in band A and 1 and 2 in band B (see FIG. 11). In this case, the maximum number of CSI-RS resources possible across bands A+B may be reported as the total number of ports corresponding to the number of CSI-RS resources supported by the following maximum values ​​#1-#5: {1, 2, 3, 4}. In other words, it may be determined that N1=4 (1, 2, 3, 4).

[0088] Max #1: Max of either Band A or Band B Max #2: Max of Band A or Band B Max #3: Band A plus Band B (1+1) Max #4: Band A plus Band B (2+1 or 1+2) Maximum value #5: Addition of Band A and Band B (2 + 2)

[0089] In this case, the index of the list may correspond to the maximum number of CSI-RS resources of N1 (1, 2, 3, 4). The total number of ports to be reported {16, 8, 4, 4} may respectively correspond to the maximum number of CSI-RS resources {1, 2, 3, 4}.

[0090] <Report the maximum number of CSI-RS resources> The UE may be controlled to explicitly report a list of the maximum number of CSI-RS resources and not explicitly report information regarding the total number of ports corresponding to the CSI-RS (see Figure 12). In this case, the index of the list may correspond to the number of ports corresponding to the CSI-RS resources (for example, 2 to 256).

[0091] For example, the first value in the list may indicate the maximum number of CSI-RS resources for 2 ports. That is, the maximum number of CSI-RS resources to be reported {16, 8, 4, 2,...} may respectively correspond to the total number of ports {2, 3, 4, 5,...}. The CSI-RS resources may be selected from among 1 to 64.

[0092] In Figure 12, 16 CSI-RS resources correspond to 2 ports, and 8 CSI-RS resources correspond to 3 ports. Thus, by adopting a configuration in which the total number of ports corresponding to the CSI-RS resources is not explicitly reported, an increase in overhead when the UE makes a report can be suppressed.

[0093] Also, the maximum number of a predetermined number of CSI-RS resources may be reported (see Figure 13). For example, the UE reports the maximum number of CSI-RS resources for the total number of N2 (here, 8 (2, 4, 8, 16, 32, 64, 128, 256)) ports. The index of the list may correspond to the total number of N2 ports (2, 4, 8, 16, 32, 64, 128, 256).

[0094] For example, the first value in the list may correspond to the maximum number of CSI-RS resources for the two ports, i.e. the maximum number of CSI-RS resources to report {16, 8, 4, 2, ...} may correspond to the total number of ports {2, 4, 8, 16, ...}, respectively. The CSI-RS resources may be selected from 1 to 64.

[0095] N2 may be predefined in the specifications, or may be set from the network to the UE by higher layer signaling, etc.

[0096] The maximum number of CSI-RS resources per BC, contained in the predefined parameters for the BC (eg, FG2-33), may be configured to be the following values / ranges:

[0097] <Range #1> It may be set to the same value as the maximum number of CSI-RS resources per band (or included in a triplet) (maxNrofCSI-RS-ResourcesperBC=maxNrofCSI-RS-Resources).

[0098] <Range #2> A value smaller than the maximum number of CSI-RS resources per band (or triplet) (maxNrofCSI-RS-ResourcesperBC <maxNrofCSI-RS-Resources)としてもよい。

[0099] <Range #3> It may be a value larger than the maximum number of CSI-RS resources per band (or included in a triplet) (maxNrofCSI-RS-ResourcesperBC>maxNrofCSI-RS-Resources).

[0100] The value / range of the maximum number of CSI-RS resources per BC may be predefined in a specification, or may be set from the network to the UE via higher layer signaling, etc.

[0101] <Setting / Interpretation of Predetermined Parameters Related to BC> When a plurality of combinations are reported as predetermined parameters related to BC (for example, FG2-33) reported from the UE, it may be controlled such that the maximum values of the CSI-RS resources included in each combination are different.

[0102] For example, assume that three combinations of {1, 16}, {2, 12}, and {3, 8} are reported from the UE as predetermined parameters {maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC, totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC} (see FIG. 14). Here, the maximum numbers of CSI-RS resources of the predetermined parameters included in each combination / list are 1, 2, and 3, respectively, and they are different from each other.

[0103] In this case, when 1 active CSI-RS resource is set in the BC within a slot, a total of 16 ports are supported within the BC. Also, when 2 active CSI-RS resources are set in the BC within a slot, a total of 12 ports are supported within the BC. Also, when 3 active CSI-RS resources are set in the BC within a slot, a total of 8 ports are supported within the BC.

[0104] Since the predetermined parameters related to BC (for example, FG2-33) are used for reporting for multiple bands, as the predetermined parameters reported for each BC, a configuration may be adopted in which reporting of 1 CSI-RS resource is not performed (see FIG. 15). That is, the predetermined parameters may be limited to reporting on the number of CSI-RS resources having a value greater than 1.

[0105] The UE may assume that reporting of a total of 1 CSI-RS resource for each BC is not allowed even when there is no clear indication / limitation by upper layer signaling or the like.

[0106] Alternatively, the UE may assume that, even in the absence of any explicit instruction / restriction by higher layer signaling, etc., if it reports a maximum of one CSI-RS resource in any band, it is not permitted to report a total of one CSI-RS resource per BC.

[0107] If a total of one CSI-RS resource is configured (e.g., in the case of a single band), the maximum number of CSI-RS ports may be limited based on a parameter reported per band (e.g., at least one of maxNumberTxPortsPerResource and totalNumberTxPortsPerBand).

[0108] (Second aspect) In the second aspect, UE operation when a single band is applied or configured is described.

[0109] When reporting codebook-related parameters (eg, FG2-36 / 2-40 / 2-41 / 2-43) / triplets for each band and BC-related predetermined parameters (eg, FG2-33) for each BC, the following cases 2-1 to 2-4 are considered.

[0110] <Case 2-1> Multiple CSI-RS resources are allowed per band report of codebook related parameters / triplets, and multiple CSI-RS are allowed per BC of a given parameter (see FIG. 16A). FIG. 16A shows a case where the maximum number of CSI-RS resources for band A is 4, the maximum number of CSI-RS resources for band B is 2, and the maximum number of CSI-RS resources for the band combination (band A+B) is 2.

[0111] In this case, when a single band is applied, taking into consideration both the codebook-related parameters / triplets and the predetermined parameters related to BC, the maximum number of CSI-RS resources is band A=2, band B=2, and band A+B=2.

[0112] <Case 2-2> Multiple CSI-RS resources are allowed per band report of codebook related parameters / triplets, and one CSI-RS is allowed per BC of a given parameter (see Figure 16B). Figure 16B shows a case where the maximum number of CSI-RS resources for band A is 4, the maximum number of CSI-RS resources for band B is 2, and the maximum number of CSI-RS resources for the band combination (band A+B) is 1.

[0113] In this case, when a single band is applied, taking into consideration both the codebook-related parameters / triplets and the predetermined parameters related to BC, the maximum number of CSI-RS resources is band A=1, band B=1, and band A+B=1.

[0114] <Case 2-3> One CSI-RS resource is allowed per band report of a codebook related parameter / triplet, and multiple CSI-RS are allowed per BC of a given parameter (see Figure 16C). Figure 16C shows a case where the maximum number of CSI-RS resources for band A is 1, the maximum number of CSI-RS resources for band B is 1, and the maximum number of CSI-RS resources for the band combination (band A+B) is 2.

[0115] In this case, when a single band is applied, taking into consideration both the codebook-related parameters / triplets and the predetermined parameters related to BC, the maximum number of CSI-RS resources is band A=1, band B=1, and band A+B=2.

[0116] <Case 2-4> One CSI-RS resource is allowed per band report of codebook related parameters / triplets, and multiple CSI-RS are allowed per BC of a given parameter (see Figure 16D). Figure 16D shows a case where the maximum number of CSI-RS resources for Band A is 1, the maximum number of CSI-RS resources for Band B is 1, and the maximum number of CSI-RS resources for the band combination (Band A+B) is 1.

[0117] In this case, when a single band is applied, taking into consideration both the codebook-related parameters / triplets and the predetermined parameters related to BC, the maximum number of CSI-RS resources is band A=1, band B=1, and band A+B=1.

[0118] In the above cases (e.g., case 2-3), when applying a single band, if both the codebook-related parameters / triplets and the specified BC-related parameters are taken into consideration, it becomes impossible to set the number of CSI-RS resources allowed in the case of a single band.

[0119] Therefore, when a single band is applied or configured, the number of CSI-RS resources / ports may be limited by reporting of codebook-related parameters / triplets per band, and may not be limited by reporting of specific parameters related to BC.

[0120] For example, the UE may determine the number of CSI-RS resources / ports based on the value reported in the codebook-related parameter / triplet when a single band is applied or configured. That is, the UE may ignore the value reported in the BC-related parameter for the UE operation in a single band, and assume that the CSI-RS resources / ports corresponding to the value reported in the codebook-related parameter / triplet are configured (see FIG. 17).

[0121] FIG. 17 shows a case where {16,1,16} and {8,2,12} are reported as parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets for the codebooks corresponding to band A and band B, respectively, and {2,12} is reported as a predetermined parameter (e.g., FG2-33) for BC corresponding to the band combination (band A+B).

[0122] When single band A or single band B is applied / configured, the network may configure up to 1 CSI-RS resource with a total of 16 ports, or up to 2 CSI-RS resources with a total of 12 ports. When single band is configured, the UE may ignore the predefined parameters related to BC.

[0123] When a band combination (Band A+B) is applied / configured, the network may configure up to two CSI-RS resources with a total of 12 ports (e.g., 6 ports of Band A + 6 ports of Band B).

[0124] This makes it possible to appropriately set CSI-RS resources / ports in a single band (for example, to set a CSI-RS resource of 16 ports) regardless of the value reported as a predetermined parameter related to BC. This makes it possible to apply appropriate CSI-RS resources / ports when applying a single band, thereby improving communication quality.

[0125] The second aspect may be applied to the case where a plurality of predetermined parameters related to BC are reported (for example, the first aspect).

[0126] FIG. 18 shows a case where {16,1,16}, {8,2,12}, and {8,4,8} are reported as parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets for the codebooks corresponding to band A and band B, respectively, and {2,16} and {4,8} are reported as predetermined parameters (e.g., FG2-33) for BC corresponding to the band combination (band A+B).

[0127] When single band A or single band B is applied / configured, the network may configure up to 1 CSI-RS resource with a total of 16 ports, up to 2 CSI-RS resources with a total of 12 ports, or up to 4 CSI-RS resources with a total of 8 ports. When single band is configured, the UE may ignore the predefined parameters related to BC.

[0128] When a band combination (Band A+B) is applied / configured, the network may configure up to 2 CSI-RS resources (e.g., 6 ports of Band A+6 ports of Band B) with a total of 12 ports. Alternatively, the network may configure up to 4 CSI-RS resources (e.g., 4 ports of Band A+4 ports of Band B) with a total of 8 ports.

[0129] In this way, by configuring the CSI-RS resources / ports to be set based on parameters / triplets reported for each band, without being restricted to BC-related parameters (e.g., FG2-33) in the case of a single band, problems such as those in Cases 1-2, 1-3, and 2-3 described above can be resolved.

[0130] <Variations> The UE may report, as the first parameter (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplet to be reported for each band, a list (e.g., two lists) including at least a case where the maximum number of CSI-RS resources is 1. In this case, the UE may perform control so as not to report multiple combinations of the second parameter (e.g., FG2-33) to be reported for each BC (e.g., to report one parameter).

[0131] For example, assume that {1, 12} is reported as the second parameter related to BC for band A+B. In this case, the UE may determine the value of one CSI-RS resource number (e.g., the number of corresponding ports, etc.) based on the first parameter / triplet reported for each band. On the other hand, when the value of one CSI-RS resource number is reported as the first parameter / triplet reported for each band, a configuration may be adopted in which the case where the number of CSI-RS resources is 1 ({1, x}) is not reported as the second parameter related to BC.

[0132] In addition, when the UE reports three or more parameters (or a list) as the first parameters to be reported for each band, the UE may report a plurality of combinations as the second parameters related to BC.

[0133] For example, assume that the UE reports the following first parameters for band A and band B as the first parameters to be reported for each band: Band A: {16,1,16}, {8,2,10} Band B: {16,1,16}, {8,2,10}, {4,3,8}

[0134] In such a case, if only one parameter can be reported as the second parameter for each BC, only one of {3, 8} or {2, 10} can be reported. In this case, if only {3, 8} is reported, {2, 10} cannot be set, and if {2, 10} is reported, {3, 8} cannot be set. Therefore, when reporting N (for example, 3) first parameters / lists as a single band, it may be configured to report N - 1 (for example, 2) second parameters.

[0135] This makes it possible to flexibly control the setting of CSI-RS resources / ports in both single-band and multi-band scenarios.

[0136] <Method for determining a predetermined parameter related to BC> The parameter related to the maximum number of CSI-RS resources reported for each BC (for example, maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC), and the parameter related to the total number of ports (for example, totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC) may be determined based on the parameters (for example, FG2-36 / 2-40 / 2-41 / 2-43) / triplets reported for each band.

[0137] When a plurality of triplets are reported for a certain band, the maximum number of CSI-RS resources reported for each BC may be set to the same as the largest value among the plurality of CSI-RS resource numbers included in the plurality of triplets.

[0138] For example, assume a case where a UE reports the following as the first parameter for each band. Band A: {16, 1, 16}, {8, 2, 10} Band B: {16, 1, 16}, {8, 2, 10}, {4, 3, 8}

[0139] In such a case, the maximum number of CSI-RS resources reported per BC may be set to 3, and the total number of ports reported per BC may be set to 8.

[0140] In this case, the number of ports reported for each BC is set to a value corresponding to the maximum number of CSI-RS resources reported for each band (here, 3), but this is not limiting. The combination of the maximum number of CSI-RS resources reported for each band and the total number of ports reported for each band may be selected from different lists rather than from one list.

[0141] (Third aspect) In the third aspect, a method of applying a predetermined parameter (eg, update FG2-33) related to BC will be described.

[0142] The extension function of the predetermined parameters (eg, updated FG2-33) related to BC shown in the first aspect may be applied as a UE capability of Rel.16.

[0143] Alternatively, the extension function may be applied as a UE capability of Rel. 15. In this case, in order to ensure backward compatibility with terminals that do not have the extension function (or to avoid changes that are not backward compatible), the following configuration may be adopted.

[0144] The new UE may signal legacy per-band capabilities with conservative numbers, new band capabilities with braver numbers, and new per-BC capabilities that are used only for the inter-band CA case. In this case, the old base station may read the legacy per-band capabilities with conservative numbers. The new base station may ignore the legacy per-band capabilities, read the new per-band capabilities with braver numbers, and read the new per-BC capabilities for the inter-band CA case.

[0145] The older UE may signal only the legacy per-band capabilities with a conservative value. In this case, the older base station may read the legacy per-band capabilities with a conservative value. The new base station may read the legacy per-band capabilities with a conservative value.

[0146] To ensure backward compatibility, all UEs continue to report legacy signaling, but new UEs may additionally report new per-band capability signaling and per-BC capability signaling for codebook-related parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43).

[0147] (Fourth aspect) In the fourth aspect, a method for interpreting a predetermined parameter (eg, updated FG2-33) related to BC reported by a UE will be described.

[0148] Assume that the UE reports the following for band A and band B as the first parameter / triplet for codebook, and reports the following for band A+B as the predetermined parameter for BC (see FIG. 19). Band A: {16,1,16}, {8,2,12} Band B: {16,1,16}, {8,2,12} Band A+B:{2,16}

[0149] In such a case, the network may configure one CSI-RS in band A and one CSI-RS in band B. In such a case, the number of CSI-RS ports corresponding to each CSI-RS resource may be interpreted as either Interpretation 1 or Interpretation 2 below.

[0150] <Interpretation 1> The UE may interpret this as a total of 12 ports being supported across Bands A+B because the reported values ​​for Band A or Band B are {8,2,12}, and the reported values ​​for Bands A+B are {2,16}, and due to the restriction on the lower value (here the number of ports is the lower value "2,12"), a total of 12 ports are assumed for Bands A+B.

[0151] <Interpretation 2> The UE may interpret this as a total of 16 ports being supported across Bands A+B because the reported values ​​for Band A or Band B are {16,1,16}, and the reported values ​​for Bands A+B are {2,16}, and due to the restriction on the lower value (here the number of resources is the lower value "1,16"), a total of 16 ports are assumed for Bands A+B.

[0152] When Interpretation 2 is applied, even if the total number of ports included in the second parameters for the BC is set lower than the total number of ports included in the first parameters, the BC can support the total number of ports included in the first parameters for one band.

[0153] (Fifth aspect) In the fifth aspect, a case will be described in which a plurality of parameters (or a combination of parameters) (for example, FG2-33) are reported as parameters related to band combination, and information related to the maximum number of ports per resource for a BC is also reported.

[0154] The UE may report the maximum number of CSI-RS resources (e.g., maxNumberResourcesPerBC) and the total number of ports of the CSI-RS resources (e.g., totalNumberTxPortsPerBC) as predetermined parameters for the BC. The UE may also report the maximum number of ports per resource for the BC (or for each BC) (e.g., maxNumberTxPortsPerResource or maxNumberTxPortsPerResourceperBC).

[0155] The maximum number of CSI-RS resources (e.g., maxNumberResourcesPerBC) may be replaced with the maximum number of CSI-RS resources in all CCs / active BWPs (e.g., maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC). The total number of ports of CSI-RS resources (e.g., totalNumberTxPortsPerBC) may be replaced with the total number of ports of CSI-RS resources in all CCs / active BWPs (e.g., totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC).

[0156] One or more (or more) combination reports / lists may be supported (or allowed) for a given parameter (e.g., FG2-33) for a BC. One or more (or more) reports / lists may be supported (or allowed) for a maximum number of ports per resource for a BC.

[0157] The UE may control the transmission of the UE capability information reported for each BC by using at least one of the following reporting methods 5-1 to 5-2.

[0158] <Reporting method 5-1> For example, the UE may report one or more combinations of {maxNumberResourcesPerBC, totalNumberTxPortsPerBC} and the maximum number of ports per resource (maxNumberTxPortsPerResource) for each BC / CSI codebook type (see Figure 20). Figure 20 illustrates a case where multiple predetermined parameters (also called updated FG2-33 or extended FG2-33) and a parameter related to the maximum number of ports per resource are reported separately or independently.

[0159] FIG. 20 illustrates a case in which the UE reports codebook-related parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets for band A and band B as follows: Band A: {16,1,16}, {8,2,10} Band B: {16,1,16}, {8,2,12}, {4,3,8}

[0160] In this case, the UE reports two predetermined parameters (e.g., updated FG2-33) / lists related to BC (here, band A+B) as follows: Of course, the number of combinations reported is not limited to two, and may be three or more. Band A+B (first information): {maxNumberResourcesPerBC, totalNumberTxPortsPerBC} = {2,10}, {3,8} Band A+B (second information): maxNumberTxPortsPerResource=8

[0161] The UE may report the first information (here, {2,10}, {3,8}) and the second information (here, 8) separately. For example, the UE may report the first information and the second information using different bits (e.g., capability bits). Multiple combinations included in the first information (here, {2,10}, {3,8}) may be reported as separate lists.

[0162] In this way, by separately reporting the first information and the second information, it is possible to reduce the amount of signaling compared to the case where the triplet itself to be reported for each band is reported for each BC.

[0163] <Report method 5-2> For example, the UE may report one or more combinations of {maxNumberResourcesPerBC, totalNumberTxPortsPerBC} and the maximum number of ports per resource (maxNumberTxPortsPerResource) for each BC / CSI codebook type (see FIG. 21). FIG. 21 illustrates a case where multiple predetermined parameters (also called updated FG2-33 or extended FG2-33) and a parameter related to the maximum number of ports per resource are reported using the same list.

[0164] FIG. 21 illustrates a case in which the UE reports codebook-related parameters (e.g., FG2-36 / 2-40 / 2-41 / 2-43) / triplets for band A and band B as follows: Band A: {16,1,16}, {8,2,10} Band B: {16,1,16}, {8,2,12}, {4,3,8}

[0165] In this case, the UE reports a predetermined parameter (e.g., updated FG2-33) related to BC (here, band A+B) and a parameter related to the maximum number of ports per resource in one list. Of course, the combination to be reported is not limited to this. Band A+B (first information): {X,(Y1,Z1),(Y2,Z2)} X:maxNumberTxPortsPerResource Y:maxNumberResourcesPerBC (or maxNumberSimultaneousNZP-CSI-RS-ActBWP-AllCC) Z: totalNumberTxPortsPerBC (or totalNumberPortsSimultaneousNZP-CSI-RS-ActBWP-AllCC)

[0166] In FIG. 21, the UE may report {8, (2, 10), (3, 8)} as capability information for BC (here, band A+B). In this case, X corresponds to (Y1, Z1) and also to (Y2, Z2). In other words, this corresponds to the case where (X, Y1, Z1) and (X, Y2, Z2) are reported.

[0167] In this way, the maximum number of ports per resource is set commonly for multiple combinations of the maximum number of CSI-RS resources (e.g., maxNumberResourcesPerBC) and the total number of ports of the CSI-RS resources (e.g., totalNumberTxPortsPerBC). This makes it possible to suppress an increase in the amount of signaling even when the maximum number of ports per resource is reported for each BC.

[0168] It may be supported or permitted for the UE to report multiple values ​​(e.g., X1, X2) for the maximum number of ports per resource. For example, the number of pieces of information (or the number of reports) regarding the maximum number of ports per resource to be reported is not limited to one. The number of reports regarding the maximum number of ports per resource to be reported may be equal to or less than the number of reports regarding multiple combinations of the maximum number of CSI-RS resources (e.g., maxNumberResourcesPerBC) and the total number of ports of the CSI-RS resources (e.g., totalNumberTxPortsPerBC).

[0169] (Sixth aspect) In the sixth aspect, a case will be described in which the same parameters as the triplet (or parameters equivalent to the triplet) are reported for each BC as parameters related to the band combination, and some of the reports are not reported (or the reports are omitted).

[0170] The UE may report the maximum number of ports per resource (e.g., maxNumberTxPortsPerResource, or maxNumberTxPortsPerResourceperBC), the maximum number of CSI-RS resources (e.g., maxNumberResourcesPerBC), and the total number of ports for CSI-RS resources (e.g., totalNumberTxPortsPerBC) for each BC / CSI codebook type.

[0171] For example, the UE may report {maxNumberTxPortsPerResource, maxNumberResourcesPerBC, totalNumberTxPortsPerBC}={X,Y,Z} in one or more (or multiple) lists for each BC / CSI codebook type. As an example, the UE may report (X1,Y1,Z1), (X2,Y2,Z2), (X3,Y3,Z3) as parameters related to BC. Of course, the number of reports (or the number of lists to be reported) is not limited to this.

[0172] Furthermore, the UE may not report or may omit some reports (or parameters) among a plurality of reports (e.g., parameters). The omitted report may be a specific parameter (e.g., maxNumberTxPortsPerResource) or may be another parameter.

[0173] As an example, among (X1, Y1, Z1), (X2, Y2, Z2), and (X3, Y3, Z3), reporting of X2 and X3 may be omitted, and (X1, Y1, Z1), (-, Y2, Z2), and (-, Y3, Z3) may be reported. Values ​​(or parameters) that are not reported may be interpreted based on predetermined conditions / predetermined rules.

[0174] For unreported values ​​(or parameters), the network (eg, base station) may assume predefined values ​​based on predefined conditions / predefined rules.

[0175] For example, the predetermined value may be another value reported for each BC. When the UE reports (X1, Y1, Z1), (-, Y2, Z2), and (-, Y3, Z3), the parameters whose report is omitted (here, X2 and X3) may be interpreted as the same value as X1. When multiple Xs are reported, the value of the X whose report is omitted may be determined in consideration of the relationship with the other parameters Y / Z.

[0176] Alternatively, the predetermined value may be determined based on a combination of (x, y, z) (e.g., a triplet) reported for each band. When the UE reports (X1, Y1, Z1), (-, Y2, Z2), and (-, Y3, Z3), the parameters whose report is omitted (here, X2 and X3) may be determined taking into consideration a combination of (x1, y1, z1), (x2, y2, z2), (x3, y3, z3), ... reported for each band. For example, the predetermined value may be determined taking into consideration the relationship between the value of y / z reported for each band and the value of x.

[0177] Alternatively, the UE may omit reporting of combinations (or lists) that correspond to a single band. For example, the UE may omit reporting (e.g., (X,1,Z)) in which the maximum number of CSI-RS resources per BC (e.g., maxNumberResourcesPerBC) is 1, because (X,1,Z) corresponds to a single band and therefore there is little need to report it in the BC.

[0178] In this way, by omitting the transmission of some reports (or parameters), it is possible to suppress an increase in the size of information reported by the UE (e.g., upper layer messages) even when reporting the maximum number of ports per resource.

[0179] (Variations) When reporting the maximum number of transmit ports per resource (maxNumberTxPortsPerResource) per BC, rule 1 or 2 below may be applied.

[0180] <Rule 1> The maximum number of transmission ports in the CSI-RS resources of a certain band may be limited to the value of maxNumberTxPortsPerResource reported for each band being the upper limit value and further being equal to or less than the value reported for each BC.

[0181] <Rule 2> The maximum number of transmission ports of the CSI-RS resources within a certain BC may be limited to the sum value among bands of maxNumberTxPortsPerResource reported for each band being the upper limit value and further being equal to or less than the value reported for each BC.

[0182] Since the maximum number of transmission ports per resource (maxNumberTxPortsPerResource) corresponds to the maximum number of transmission ports in a certain CSI-RS, when reported for each BC, there is a possibility that it is unclear which band's CSI-RS has the maximum number of transmission ports. Therefore, such a problem can be solved by applying the following Rule 1 or Rule 2.

[0183] <Report of UE capabilities> The UE may report to the network as part of the UE capability whether it supports the ability to report at least some of the elements included in the triplet for each BC. A capability bit / parameter for reporting whether support is available may be defined. Alternatively, the network may determine whether such support is available based on the structure, configuration, and value of the reports per band / per BC reported by the UE.

[0184] (Wireless communication system) Hereinafter, the configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

[0185] 22 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), or the like, which are specified by the Third Generation Partnership Project (3GPP).

[0186] Furthermore, the wireless communication system 1 may support dual connectivity between a plurality of Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0187] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN) and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN and the LTE (E-UTRA) base station (eNB) is the SN.

[0188] The wireless communication system 1 may support dual connectivity between multiple base stations in the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0189] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are arranged in the macrocell C1 and form a small cell C2 that is narrower than the macrocell C1. A user terminal 20 may be located in at least one of the cells. The arrangement and number of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as a base station 10.

[0190] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0191] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.

[0192] Furthermore, the user terminal 20 may perform communication in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0193] The multiple base stations 10 may be connected by wire (e.g., optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0194] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include at least one of, for example, an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0195] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0196] In the wireless communication system 1, a wireless access scheme based on Orthogonal Frequency Division Multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. may be used.

[0197] The radio access scheme may be called a waveform. In the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0198] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as a downlink channel.

[0199] In addition, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

[0200] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0201] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information of at least one of the PDSCH and the PUSCH.

[0202] In addition, DCI for scheduling PDSCH may be called DL assignment, DL DCI, etc., and DCI for scheduling PUSCH may be called UL grant, UL DCI, etc. In addition, PDSCH may be replaced with DL data, and PUSCH may be replaced with UL data.

[0203] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or multiple search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0204] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," and "CORESET setting" in the present disclosure may be read as interchangeable terms.

[0205] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and a scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0206] In the present disclosure, a downlink, an uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning of the channels.

[0207] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0208] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and the DMRS for the PBCH) may be called an SS / PBCH block, an SS Block (SSB), or the like. In addition, the SS, SSB, and the like may also be called a reference signal.

[0209] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may be called a user equipment specific reference signal (UE-specific reference signal).

[0210] (base station) 23 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140 may be provided.

[0211] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and the base station 10 may be assumed to have other functional blocks necessary for wireless communication. Some of the processes of each unit described below may be omitted.

[0212] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured with a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0213] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transmission and reception unit 120. The control unit 110 may perform call processing (setting, release, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0214] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0215] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0216] The transmitting / receiving antenna 130 can be composed of an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0217] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0218] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0219] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0220] The transceiver 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0221] The transceiver unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, and the like on the baseband signal, and transmit the radio frequency band signal via the transceiver antenna .

[0222] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency signal received by the transceiver antenna .

[0223] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0224] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc., based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0225] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data) for the user terminal 20, control plane data, etc.

[0226] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0227] The transceiver 120 may receive a plurality of first information regarding combinations of channel state information resources for a band combination and the number of ports for the band combination, and second information regarding the number of ports for each channel state information resource for the band combination.

[0228] The control unit 110 may control the transmission of the channel state information reference signal based on the first information and the second information.

[0229] (User terminal) 24 is a diagram showing an example of the configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0230] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and the user terminal 20 may be assumed to have other functional blocks necessary for wireless communication. Some of the processes of each unit described below may be omitted.

[0231] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured with a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0232] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission / reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transmission / reception unit 220.

[0233] The transmitting / receiving unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting / receiving unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting / receiving circuit, and the like, which are described based on common understanding in the technical field related to the present disclosure.

[0234] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0235] The transmitting / receiving antenna 230 can be composed of an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.

[0236] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0237] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0238] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0239] The transceiver 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit sequence to be transmitted, and output a baseband signal.

[0240] Whether or not to apply the DFT process may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver 220 (transmission processor 2211) may perform the DFT process as the transmission process to transmit the channel using a DFT-s-OFDM waveform, and may not perform the DFT process as the transmission process if transform precoding is enabled for the channel.

[0241] The transceiver unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, and the like on the baseband signal, and transmit the radio frequency band signal via the transceiver antenna 230.

[0242] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency signal received by the transceiver antenna 230.

[0243] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0244] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0245] In addition, the transmitting section and the receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0246] The transceiver 220 may transmit a plurality of first information regarding combinations of channel state information resources for a band combination and the number of ports for the band combination, and second information regarding the number of ports for each channel state information resource for the band combination.

[0247] The control unit 210 may control reporting of multiple first information regarding combinations of channel state information resources for a band combination and the number of ports for the band combination, and second information regarding the number of ports for each channel state information resource for the band combination.

[0248] The control unit 210 may perform control so as to report the first information and the second information separately, or may perform control so as to include the first information and the second information in the same list and report them.

[0249] The control unit 210 may control the reporting of a plurality of pieces of information related to combinations of the number of ports for each resource for channel state information for a band combination, the resource for channel state information for a band combination, and the number of ports for the band combination. Furthermore, the control unit 210 may control not to report the number of ports for each resource for channel state information for a band combination in at least one of the plurality of pieces of information.

[0250] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. The method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically combined, or may be realized by using two or more devices that are physically or logically separated and directly or indirectly connected (for example, by wire, wirelessly, etc.). The functional blocks may be realized by combining the one device or the multiple devices with software.

[0251] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs the function of transmission may be called a transmitting unit, a transmitter, and the like. In either case, as described above, the method of realization is not particularly limited.

[0252] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 25 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment. The above-mentioned base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0253] In this disclosure, the terms "apparatus," "circuit," "device," "section," "unit," and the like can be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0254] For example, although only one processor 1001 is shown, there may be multiple processors. Also, the processes may be performed by one processor, or the processes may be performed by two or more processors simultaneously, sequentially, or in other manners. Also, the processor 1001 may be implemented by one or more chips.

[0255] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading a specific software (program) onto hardware such as a processor 1001 and a memory 1002, so that the processor 1001 performs calculations, controls communications via a communication device 1004, and controls at least one of reading and writing of data in the memory 1002 and the storage 1003.

[0256] The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0257] Moreover, the processor 1001 reads out programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to the programs. As the programs, programs that cause a computer to execute at least a part of the operations described in the above-mentioned embodiments are used. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and the other functional blocks may be realized in a similar manner.

[0258] The memory 1002 is a computer-readable recording medium, and may be configured by at least one of, for example, a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), and other suitable storage media. The memory 1002 may be called a register, a cache, a main memory (primary storage device), and the like. The memory 1002 can store a program (program code), a software module, and the like that is executable to implement a wireless communication method according to an embodiment of the present disclosure.

[0259] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0260] The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0261] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0262] In addition, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0263] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc., and some or all of the functional blocks may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0264] (Modification) In addition, the terms explained in this disclosure and the terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be read as mutually interchangeable. A signal may also be a message. A reference signal may also be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applied standard. A component carrier (CC) may also be called a cell, a frequency carrier, a carrier frequency, etc.

[0265] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0266] Here, the numerology may be a communication parameter applied to at least one of the transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), a number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0267] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. A slot may also be a time unit based on numerology.

[0268] A slot may include multiple minislots. Each minislot may be composed of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may be composed of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0269] A radio frame, a subframe, a slot, a minislot, and a symbol each represent a time unit for transmitting a signal. A different name may be used for the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be read as interchangeable with each other.

[0270] For example, one subframe may be called a TTI, multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0271] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0272] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) in which a transport block, a code block, a code word, etc. are actually mapped may be shorter than the TTI.

[0273] In addition, when one slot or one minislot is called TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit of scheduling. Also, the number of slots (minislots) constituting the minimum time unit of scheduling may be controlled.

[0274] A TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, etc.

[0275] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0276] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

[0277] In addition, an RB may include one or more symbols in the time domain, and may have a length of one slot, one minislot, one subframe, or one TTI. Each of one TTI, one subframe, etc. may be composed of one or more resource blocks.

[0278] In addition, one or more RBs may be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0279] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0280] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a numerology on a carrier, where the common RBs may be identified by the index of the RBs relative to a common reference point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0281] The BWP may include a UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0282] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell", "carrier", etc. in this disclosure may be replaced with "BWP".

[0283] The above-mentioned structures of radio frames, subframes, slots, minislots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.

[0284] In addition, the information, parameters, etc. described in the present disclosure may be represented using absolute values, may be represented using relative values ​​from a predetermined value, or may be represented using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0285] The names used for parameters and the like in this disclosure are not limiting in any way. Furthermore, the formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any way.

[0286] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0287] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via a plurality of network nodes.

[0288] Input and output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added to. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0289] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0290] The physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. The RRC signaling may be called an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc. The MAC signaling may be notified, for example, by using a MAC Control Element (CE).

[0291] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0292] The determination may be made based on a value represented by a single bit (0 or 1), a Boolean value represented as true or false, or by comparing numerical values ​​(e.g., with a predetermined value).

[0293] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0294] Additionally, software, instructions, information, etc. may be transmitted or received over a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave, etc.), then these wired and / or wireless technologies are included within the definition of transmission media.

[0295] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0296] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," and the like may be used interchangeably.

[0297] In this disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. may be used interchangeably. A base station may also be referred to by terms such as a macro cell, a small cell, a femto cell, a pico cell, etc.

[0298] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small base station for indoor use (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or a base station subsystem that provides communication services in this coverage.

[0299] In this disclosure, the terms "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "terminal", etc. may be used interchangeably.

[0300] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0301] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may include a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0302] Furthermore, the base station in the present disclosure may be read as a user terminal. For example, each aspect / embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be read as a side channel.

[0303] Similarly, the user terminal in the present disclosure may be interpreted as a base station. In this case, the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0304] In the present disclosure, an operation performed by a base station may be performed by its upper node in some cases. It is clear that in a network including one or more network nodes having base stations, various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0305] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched according to implementation. In addition, the processing procedures, sequences, flow charts, etc. of each aspect / embodiment described in this disclosure may be reordered unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0306] Each aspect / embodiment described in the present disclosure may be implemented using any of a wide variety of standards, including Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to systems using 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), other appropriate wireless communication methods, next-generation systems that are based on these, etc. Also, the present invention may be applied to a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0307] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0308] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, and the like.

[0309] A "determining" may also be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc.

[0310] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. That is, "determination" may be considered to be "deciding" to perform some action.

[0311] Additionally, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," etc.

[0312] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0313] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, and the like, as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, and the like, as some non-limiting and non-exhaustive examples.

[0314] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0315] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Further, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0316] In this disclosure, where articles have been added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0317] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as modified and altered forms without departing from the spirit and scope of the invention defined based on the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the invention according to the present disclosure.

[0318] This application is based on Japanese Patent Application No. 2020-074780, filed on April 20, 2020, the contents of which are incorporated herein in their entirety.

Claims

1. A control unit that controls to report a parameter including a combination of a maximum number of simultaneous channel state information reference signal resources in an active bandwidth portion (BWP) of all component carriers (CCs) and a total number of CSI-RS ports of the simultaneous channel state information reference signal resources in the active BWP of all CCs, and a parameter including a maximum number of ports for each resource for each band combination; a transmission unit that transmits a parameter including the combination and a parameter including the maximum number of ports per resource, The control unit controls to report information regarding support of a capability of reporting the maximum number of ports for each resource for each band combination as part of the terminal capability; The control unit supports reporting of a maximum number of ports per same resource for a plurality of the combinations.

2. A step of controlling a parameter including a combination of a maximum number of simultaneous channel state information reference signal resources in an active bandwidth portion (BWP) of all component carriers (CCs) and a total number of CSI-RS ports of the simultaneous channel state information reference signal resources in the active BWP of all CCs, and a parameter including a maximum number of ports per resource, so as to be reported for each band combination; transmitting parameters including the combination and parameters including the maximum number of ports per resource; Controlling to report information regarding support of a capability of reporting the maximum number of ports per resource for each band combination as part of the terminal capability; A wireless communication method for a terminal that supports reporting of a maximum number of ports per same resource for a plurality of the combinations.

3. A system including a terminal and a base station, The terminal includes: A control unit that controls to report a parameter including a combination of a maximum number of simultaneous channel state information reference signal resources in an active bandwidth portion (BWP) of all component carriers (CCs) and a total number of CSI-RS ports of the simultaneous channel state information reference signal resources in the active BWP of all CCs, and a parameter including a maximum number of ports for each resource for each band combination; a transmission unit that transmits a parameter including the combination and a parameter including the maximum number of ports per resource, The control unit supports reporting of a maximum number of ports per resource for the same combinations; The base station, a receiver for receiving a parameter including the combination and a parameter including the maximum number of ports per resource; The control unit controls to report information regarding support of the capability to report the maximum number of ports for each resource for each band combination as part of the terminal capability.

Images