CN117083906A - Terminal, wireless communication method and base station - Google Patents

Abstract

The terminal according to one aspect of the present disclosure includes: a control unit configured to determine a priority associated with reporting of channel state information (Channel State Information (CSI)) based on at least a value associated with a measurement hypothesis (measurement hypotheses); and a transmitting unit configured to transmit the CSI report selected based on the priority in a case where the plurality of CSI reports collide.

Description

Terminal, wireless communication method and base station

Technical Field

The present disclosure relates to a terminal, a wireless communication method, and a base station in a next generation mobile communication system.

Background

In a universal mobile telecommunications system (Universal Mobile Telecommunications System (UMTS)) network, long term evolution (Long Term Evolution (LTE)) has been standardized for the purpose of further high-speed data rates, low latency, and the like (non-patent document 1). Further, for the purpose of further large capacity, high altitude, and the like of LTE (third generation partnership project (Third Generation Partnership Project (3 GPP)) Release (rel.) 8, 9), LTE-Advanced (3 GPP rel.10-14) has been standardized.

Subsequent systems of LTE (e.g., also referred to as fifth generation mobile communication system (5 th generation mobile communication system (5G)), 5g+ (plus), sixth generation mobile communication system (6 th generation mobile communication system (6G)), new Radio (NR)), 3gpp rel.15 later, and the like are also being studied.

Prior art literature

Non-patent literature

Non-patent document 1:3GPP TS 36.300V8.12.0"Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); overall description; stage 2 (Release 8) ", 4 th 2010

Disclosure of Invention

Problems to be solved by the invention

In NR, a User terminal (UE) measures a channel state based on a resource of a reference signal such as a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)) and feeds back (reports) channel state information (Channel State Information (CSI)) to a network (e.g., a base station).

Further, in NR, one or more Transmission/Reception points (TRP) (multi TRP (M-TRP)) are being studied to perform DL Transmission to UE using one or more panels (multi TRP). Furthermore, the UE is being studied to UL transmit one or more TRPs using one or more panels.

However, in the NR specifications so far, control of CSI reporting in the case of using multiple panels/TRP has not been studied sufficiently. For example, existing CSI priority does not consider TRP. Therefore, if the existing CSI priority is used, CSI reporting cannot be properly performed in the case of multi-TRP, and there is a concern that throughput may be reduced or communication quality may be deteriorated.

Accordingly, it is an object of the present disclosure to provide a terminal, a wireless communication method, and a base station capable of appropriately implementing CSI reporting even in a case where a plurality of TRPs or panels are used.

Means for solving the problems

The terminal according to one aspect of the present disclosure includes: a control unit configured to determine a priority associated with reporting of channel state information (Channel State Information (CSI)) based on at least a value associated with a measurement hypothesis (measurement hypotheses); and a transmitting unit configured to transmit the CSI report selected based on the priority in a case where the plurality of CSI reports collide.

Effects of the invention

According to an aspect of the present disclosure, CSI reporting can be appropriately implemented even in the case where a plurality of TRPs or panels are used.

Drawings

Fig. 1 is a diagram showing an example of a multi-TRP scenario.

Fig. 2A and 2B are diagrams for explaining parameters used for CSI priority according to the first embodiment.

Fig. 3A and 3B are diagrams for explaining parameters used for CSI priority according to the second embodiment.

Fig. 4A and 4B are diagrams for explaining parameters used for CSI priority according to the third embodiment.

Fig. 5 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment.

Fig. 6 is a diagram showing an example of a configuration of a base station according to an embodiment.

Fig. 7 is a diagram showing an example of a configuration of a user terminal according to an embodiment.

Fig. 8 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment.

Detailed Description

(CSI)

In NR, a UE measures a channel state based on a resource of a reference signal such as a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and feeds back (reports) channel state information (Channel State Information (CSI)) to a network (e.g., a base station).

The CSI may include at least one of a channel quality Indicator (Channel Quality Indicator (CQI)), a precoding matrix Indicator (Precoding Matrix Indicator (PMI)), a CSI-RS resource Indicator (CSI-RS Resource Indicator (CRI)), an SS/PBCH block resource Indicator (SS/PBCH Block Resource Indicator (SSBRI)), a Layer Indicator (LI)), a Rank Indicator (RI)), an L1-RSRP (reference signal received power (Layer 1Reference Signal Received Power) in Layer 1), an L1-RSRQ (reference signal received quality (Reference Signal Received Quality)), an L1-SINR (signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio)), an L1-SNR (signal-to-noise ratio (Signal to Noise Ratio)), and the like.

As a feedback method of CSI, periodic CSI (P-CSI)) report, aperiodic CSI (a-CSI)) report, semi-Persistent CSI (SP-CSI)) report, and the like are being studied.

The UE may also be informed of CSI measurement setup information using higher layer signaling, physical layer signaling, or a combination thereof.

In the present disclosure, the higher layer signaling may also be any one of, or a combination of, radio resource control (Radio Resource Control (RRC)) signaling, medium access control (Medium Access Control (MAC)) signaling, broadcast information, and the like, for example.

MAC signaling may also use, for example, MAC control elements (MAC Control Element (MAC CE)), MAC protocol data units (Protocol Data Unit (PDU)), and the like. The broadcast information may be, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), minimum system information (remaining minimum system information (Remaining Minimum System Information (RMSI))), other system information (Other System Information (OSI)), or the like.

The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

The CSI measurement setup information may also be set using, for example, the RRC information element "CSI-MeasConfig". The CSI measurement setting information may also include CSI resource setting information (RRC information element "CSI-ResourceConfig"), CSI report setting information (RRC information element "CSI-ReportConfig"), and the like. CSI resource setting information is associated with resources for CSI measurement, and CSI report setting information is associated with how the UE performs CSI reporting.

The CSI report setting information ("CSI-ReportConfig") includes resource information for channel measurement ("resource escheftannelmeasement"). The CSI report setting information also includes interference measurement resource information (for example, non-Zero Power for interference measurement (NZP)) CSI-RS resource information ("NZP-CSI-RS-resource for interference"), interference measurement CSI-Interference Management (IM) resource information ("CSI-IM-resource for interference"), and the like. These resource information correspond to ID (Identifier) ("CSI-ResourceConfigId") of CSI resource setting information.

The IDs of one or a plurality of CSI resource setting information (which may be referred to as CSI resource setting IDs) corresponding to the respective resource information may be the same value or may be different values.

The CSI resource setting information ("CSI-ResourceConfig") may also include CSI resource setting information ID, CSI-RS resource set list information ("CSI-RS-ResourceSetList"), resource type ("resourceType"), and the like. The CSI-RS resource set list may also contain at least one of information for the measured NZP CSI-RS and SSB ("NZP-CSI-RS-SSB") and CSI-IM resource set list information ("CSI-IM-resource list").

The resource type indicates an operation of the CSI-RS resource setting in the time domain, and may be set to "aperiodic", "semi-persistent", and "periodic". The respective corresponding CSI-RSs may also be referred to as A-CSI-RSs, SP-CSI-RSs, P-CSI-RSs.

The channel measurement resource may be used for calculation of CQI, PMI, L-RSRP, for example. The interference measurement resource may be used for calculation of L1-SINR, L1-SNR, L1-RSRQ, and other interference related indicators.

(priority associated with CSI reporting)

In rel.15/16NR, CSI reports (which may also be referred to as CSI reports, CSI feedback, etc.) may also be associated with a priority value. For example, the value of the priority may also use the function Pri _iCSI (y, k, c, s) are defined. The priority may also be interchanged with CSI reporting priority, CSI priority (CSI priority), UCI priority (UCI priority), CSI/UCI omission rule (CSI/UCI omission rule), etc.

Here, y may be a value based on the type of CSI report (a-CSI report or SP-CSI report or P-CSI report) and a channel on which the CSI report is transmitted (uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH))) or uplink control channel (physical uplink control channel (Physical Uplink Control Channel (PUCCH)))).

For example, y=0 for an a-CSI report transmitted on PUSCH, y=1 for an SP-CSI report transmitted on PUSCH, y=2 for an SP-CSI report transmitted on PUCCH, and y=3 for a P-CSI report transmitted on PUCCH.

k may also be a value based on whether the CSI report contains L1-RSRP/SINR (e.g., k=0 in case the CSI report contains L1-RSRP/SINR, and k=1 in case it does not). C may also be the serving cell index. S may also be a report setting ID (reportConfigID).

For example, pri _iCSI (y, k, c, s) can also be obtained by the following formula (1).

(1)

Pri _iCSI (y、k、c、s)＝2·N _cells ·M _s ·y+N _cells ·M _s ·k+M _s ·c+s

Here, N may be _cells Is the maximum number of serving cells (higher layer parameters maxNrofServingCells) to be set, M _s Is the maximum number of values (higher layer parameters maxNrofCSI-ReportConfigurations) for which CSI reports are set.

At Pri associated with first CSI report _iCSI (y, k, c, s) is less than Pri associated with the second CSI report _iCSI In the case of the value of (y, k, c, s), the first CSI report may be higher in priority than the second CSI report.

(Conflict of CSI reporting)

In rel.15/16NR, a time occupancy (time occupancy) of a physical channel (e.g., PUCCH, PUSCH) scheduled for transmission of two CSI reports is referred to as two CSI report collisions (collides) when the two CSI reports are repeated (or overlapped) in at least one orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) symbol and transmitted in the same carrier.

When the UE is set to transmit two conflicting CSI reports, and when the value of y (in the expression of priority) between the two CSI reports is different, the following rule is applied except for the case where the value of y of one is 2 and the value of y of the other is 3: CSI reports with higher priority values are not transmitted by the UE. In the case that this is not the case, the two CSI reports may be both multiplexed or one may be discarded based on the value of the priority.

The UE decides a first resource corresponding to a CSI report having the highest priority in a case where a plurality of PUCCH resources are set in one slot in which a CSI report is transmitted and a list of PUCCH resources for a plurality of CSI is not provided (RRC parameter "multi-CSI-PUCCH-resource list") or in a case where the plurality of PUCCH resources are not repeated in the one slot.

Here, when the first resource includes PUCCH format 2 and there is a remaining resource that does not overlap with the first resource in the one slot, the UE decides a CSI report having the highest priority among CSI reports having a corresponding resource from among the remaining resources, and decides a corresponding second resource as an additional resource for CSI reporting.

Further, in the case where the first resource includes PUCCH format 3 or PUCCH format 4 and there is a remaining resource including PUCCH format 2 that is not repeated with the first resource in the one slot, the UE decides a CSI report having the highest priority among CSI reports having a corresponding resource from among the remaining resources, and decides a corresponding second resource as an additional resource for CSI reporting.

When a plurality of PUCCH resources are set in one slot in which CSI reports are transmitted and when a list of PUCCH resources for a plurality of CSI is provided and the plurality of PUCCH resources are repeated in the one slot, the UE multiplexes all CSI reports from the resources provided through the list in one resource.

In rel.15/16NR, PFs (PUCCH formats) include PFs 0 to 4, but at least one of PFs 2, 3, and 4 for uplink control information (Uplink Control Information (UCI)) having more than 2 bits is used for CSI reporting. PF2 is transmitted over one or two symbols and PF3/4 is transmitted over 4 or more symbols.

The UE may also report CSI reports using one or both of the determined first and second resources.

(multiple TRP)

In NR, one or more Transmission/Reception points (TRP)) are being studied (multi TRP (M-TRP)) to perform DL Transmission to a UE using one or more panels (multi panels). Furthermore, the UE is being studied to UL transmit one or more TRPs using one or more panels.

The plurality of TRPs may correspond to the same cell identifier (cell Identifier (ID)) or may correspond to different cell IDs. The cell ID may be either a physical cell ID or a virtual cell ID.

Fig. 1 is a diagram showing an example of a multi-TRP scenario. In these examples, it is assumed that each TRP and UE can utilize two different beams, but is not limited thereto.

The multi-TRP (TRP #0, # 1) may also be connected by an ideal/non-ideal backhaul (backhaul) and exchanged information, data, and the like. Different Code Words (CW) and different layers may be transmitted from each TRP of the multiple TRPs. As a form of multi-TRP transmission, incoherent joint transmission (Non-Coherent Joint Transmission (NCJT)) may also be used.

In NCJT, for example, TRP #0 performs modulation mapping on a first codeword and layer mapping and transmits a first PDSCH using a first precoding for a first number of layers (e.g., 2 layers). In addition, TRP #1 performs modulation mapping on the second codeword and layer mapping and transmits the second PDSCH using the second precoding for a second number of layers (e.g., 2 layers).

In addition, a plurality of PDSCH (multiple PDSCH) that are NCJT may also be defined as partially or fully repeated with respect to at least one of the time domain and the frequency domain. In other words, at least one of the time and frequency resources of the first PDSCH from the first TRP #0 and the second PDSCH from the second TRP #1 may also be repeated.

It is also conceivable that these first PDSCH and second PDSCH are not in a Quasi Co-located (QCL) relationship (non-Quasi Co-located). The reception of multiple PDSCH may also be replaced with simultaneous reception of PDSCH that is not of a certain QCL type (e.g., QCL type D).

The UE receives multiple PDSCH from multiple TRPs (may also be referred to as multiple PDSCH (multiple PDSCH)) based on one or more DCI. Further, in this example, the UE is assumed to transmit different CSI reports (CSI reports) related to the respective TRPs to the different TRPs. Such CSI feedback may also be referred to as split feedback, split CSI feedback, or the like. In addition, CSI feedback for transmitting CSI reports related to both TRPs to one TRP may also be referred to as joint feedback, joint CSI feedback, or the like.

In fig. 1, the UE is configured to transmit a CSI report for TRP #0 using a PUCCH (PUCCH 1) for TRP #0, and to transmit a CSI report for TRP #1 using another PUCCH (PUCCH 2) for TRP # 1.

According to such a multi-TRP scenario, more flexible transmission control using a channel of good quality can be performed.

(Single TRP/Multi TRP CSI reporting)

The following options are being investigated for CSI reports associated with the Multi-TRP/panel NCJT measurement hypothesis (e.g., multi-TRP/panel NCJT measurement hypothesis) set by a single CSI report setting (sigle CSI reporting setting).

< option 1 >)

The UE may also be set to report X CSI associated with a single TRP measurement hypothesis and one CSI associated with an NCJT (or multi TRP) measurement hypothesis. X may also be set/defined to a specific value (e.g., x=0, 1, 2).

In the case of x=2, the two CSI may also be associated with two different single TRP measurement hypotheses of a CMR that utilizes different sets of channel measurement resources (Channel Measurement Resource (CMR)). X=1, 2 may also be an option for a UE supporting option 1.

< option 2 >)

The UE may also be set to report one CSI associated with the best (or best) CSI in NCJT (or multi-TRP) and single TRP measurement hypotheses.

However, in the NR specifications so far, control of CSI reporting in the case of using multiple panels/TRP has not been studied sufficiently. For example, the existing CSI priority of equation (1) does not consider TRP.

For example, it is also contemplated that in CSI reporting, X (e.g., x=0, 1, 2) CSI associated with a single TRP measurement hypothesis and one CSI associated with an NCJT (or multi TRP) measurement hypothesis are supported for reporting. In such a case, how to control the priority between the measurement hypotheses becomes a problem. Therefore, if the existing CSI priority is used, CSI reporting cannot be properly performed in the case of multi-TRP, and there is a concern that throughput may be reduced or communication quality may be deteriorated.

Accordingly, the inventors of the present invention have conceived a method for properly performing CSI reporting. According to an aspect of the present disclosure, a UE can appropriately decide CSI priority in association with TRP.

In addition, in the present disclosure, "a/B" may also mean "at least one of a and B".

In the present disclosure, a panel, an Uplink (UL)) transmitting entity, TRP, spatial relationship, a control resource set (COntrol REsource SET (CORESET)), PDSCH, codeword, base station, a specific antenna port (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) port), a specific antenna port group (e.g., DMRS port group), a specific group (e.g., code division multiplexing (Code Division Multiplexing (CDM)) group, a specific reference signal group, CORESET group), CORESET pool, etc. may also be replaced with each other. Furthermore, TRP identifiers (Identifier (ID)) and TRP may also be replaced.

In this disclosure, indexes, IDs, indicators, resource IDs, etc. may also be replaced with each other. In this disclosure, beams, TCIs, TCI states, DL TCI states, UL TCI states, unified TCI states, QCL assumptions, spatial relationships, spatial relationship information, precoders, etc. may also be substituted for each other.

In this disclosure, lists, groups, sets, subsets, clusters, etc. may also be substituted for each other.

The application of CSI priority of the present disclosure may also be applied in both the case where UCI (e.g., UCI including at least CSI) is transmitted through PUCCH (e.g., UCI on PUCCH) and the case where UCI is transmitted through PUSCH (UCI on PUSCH).

CSI priority of the present disclosure may be utilized both in case the UE is set with multi-TRP, and in case separate feedback is used in CSI feedback (for multi-TRP). But is not limited thereto and may be utilized in the case of using joint feedback.

(first mode)

The first approach considers measurement hypotheses (e.g., measurement hypotheses) to decide the priority of CSI.

The measurement hypothesis (e.g., measurement hypotheses) may also indicate whether the CSI report corresponds to a single TRP or to multiple TRP (or NCJT). The measurement hypothesis may also be referred to as a measurement type, a measurement TRP number, a measurement TRP type, etc. In addition, measurement assumptions of multiple TRP may also refer to measurements based on CMR pairs with two CMR resources.

When the multi-TRP is set/used, the CSI priority can be obtained by the following equation (2). The UE may control transmission of CSI reports (or PUCCH resources for transmitting CSI reports) based on priorities corresponding to the CSI reports in the event of a collision of CSI reports (e.g., CSI reports with different measurement hypotheses) corresponding to the plurality of TRPs.

(2)

Pri _iCSI (y、k、c、s、q)＝2·N _cells ·M _s ·K _q ·y+N _cells ·M _s ·K _q ·k+M _s ·K _q ·c+K _q ·s+q

Here, q may also represent a measurement hypothesis (measurement hypotheses). K (K) _q Or the total number of measurement hypotheses. As K _q Up to N (e.g., n=2) may also be supported. K (K) _q The number (or value) of (a) may be a fixed value (e.g., 2) or may be set by higher layer signaling.

< option 1-1 >)

For example, q=0 in the single TRP measurement hypothesis (single-TRP measurement hypotheses), and q=1 in the multiple TRP measurement hypothesis (MTRP measurement hypotheses) (see fig. 2A). In addition, the value of q is not limited thereto.

< options 1-2 >

In the multi-TRP measurement hypothesis (MTRP measurement hypotheses), q=0, and in the single-TRP measurement hypothesis (single-TRP measurement hypotheses), q=1 (see fig. 2B). In addition, the value of q is not limited thereto.

Options 1-1 and 1-2 may also be selected/decided according to which of the CSI report of single TRP and the CSI report of multiple TRP is prioritized. The selection of option 1-1 and option 1-2 (or which of option 1-1 and option 1-2 to utilize) may be defined in the specification, set to the UE by high-level signaling, or reported by UE capabilities (e.g., UE capabilities).

In formula (2), q and K corresponding to q _q May be set at other positions in the formula. In other words, in the formula (2), q and K corresponding to q _q The position of (c) may be changed and applied as appropriate.

In this way, by determining the priority of CSI reporting in consideration of measurement hypotheses, CSI reporting can be properly performed even when CSI reporting corresponding to a single TRP collides with CSI reporting corresponding to multiple TRPs.

In addition, the UE may also be decidingIn the case of CSI priority, it is aimed at whether q-value/K is utilized _q The value (or, formula (2)) is determined based on the setting of the CSI report. For example, in the case where x=0 is set in X CSI reports associated with a single TRP measurement hypothesis, q value/K is not required in determining the priority order of CSI _q Value (or, formula (2)). In such a case the UE may not utilize q-value/K _q The value (or, equation (2)) (e.g., using equation (1)) determines the CSI priority.

(second mode)

The second approach considers measurement hypotheses (e.g., measurement hypotheses) and TRP indices to determine the priority of CSI.

In this specification, the TRP index may also be replaced with a CORESET pool index, a CMR group index, an index of a DMRS port group, or a TCI status index of a DCI code point.

For example, when two TRPs are set, the first TRP index may be replaced with a CORESET pool index 0, a first CMR group index, a first DMRS port group index, or a first TCI status index of a DCI code point. The second TRP index may also be replaced with a CORESET pool index 1, a second CMR group index, a second DMRS port group index, or a second TCI status index for a DCI code point.

When the multi-TRP is set/used, the CSI priority can be obtained by the following expression (3). The UE may control transmission of CSI reports (or PUCCH resources for transmitting CSI reports) based on priorities corresponding to the CSI reports in the event of collision of CSI reports (e.g., CSI reports with different measurement hypotheses) corresponding to the plurality of TRPs.

(3)

Pri _iCSI (y、k、c、q、s)＝2·N _cells ·M _s ·K _q ·y+N _cells ·M _s ·K _q ·k+M _s ·K _q ·c+K _q ·q+s

Here, q may also correspond to both the measurement hypothesis (measurement hypotheses) and TRP index information. K (K) _q May also correspond to the total number of combinations of TRP index and measurement hypothesis. For example, as K _q A specific value may also be set. Specific values may be in the specificationIs defined and may also be set to the UE by higher layer signaling. As an example, the specific value may be 3 or 4.

For example, in the case of K _q When 3 is set, it corresponds to TRP#1 corresponding to a single TRP, TRP#2 corresponding to a single TRP, or multi-TRP (or M-TRP NCJT).

< option 2-1 >)

In the single TRP measurement hypothesis with trp=0 (or trp#0), q=0, in the single TRP measurement hypothesis with trp=1 (or trp#1), q=1, and in the multiple TRP measurement hypothesis, q=2 (see fig. 3A). The value of q, TRP corresponding to q, and the like are not limited thereto.

In option 2-1, for CSI of multiple TRP, it is not necessary to separate the two RI/PMI/CQIs for two TRP from the priority of CRI for NCJT (one CRI or two CRI for NCJT). Only in the case of a single TRP hypothesis, the priority may be divided into two TRPs.

< option 2-2 >)

In the single TRP measurement hypothesis of trp=0 (or trp#0), q=0, in the single TRP measurement hypothesis of trp=1 (or trp#1), q=1, in the multi TRP measurement hypothesis in which CSI is obtained from trp=0, q=2, and in the multi TRP measurement hypothesis in which CSI is obtained from trp=1, q=3 (see fig. 3B). The value of q, TRP corresponding to q, and the like are not limited thereto.

In option 2-2, the CSI for the multiple TRP may also determine different priorities of two (CRI)/RI/PMI/CQI for the two TRPs. In the case where the CRI report is only one for NCJT, the CRI may also belong to a specific TRP (e.g., trp=0).

In addition, the correspondence relationship of the value of q, measurement hypothesis, TRP index is not limited thereto. Different q values may also be mapped for combinations of measurement hypotheses and TRP information.

In formula (3), q and K corresponding to q _q May be set at other positions in the formula. In other words, in the formula (3), q and K corresponding to q _q The position of (c) may be changed and applied as appropriate.

In this way, by considering the measurement hypothesis and the TRP index, the priority of CSI between single TRP measurement hypothesis and multi TRP measurement hypothesis from different TRPs can be distinguished. Thus, even when CSI reports corresponding to a single TRP from different TRPs collide with CSI reports corresponding to multiple TRPs, CSI reports can be appropriately performed.

In addition, the UE may also determine whether to use q value/K in case of determining CSI priority _q The value (or, formula (3)) is determined based on the CSI report setting (e.g., at least one of X and the category of CSI report).

For example, in the case where x=0 is set in X CSI reports associated with a single TRP measurement hypothesis, q value/K is not required in determining the priority order of CSI _q Value (or, formula (3)). In such a case the UE may not utilize q-value/K _q The value (or, equation (3)) (e.g., using equation (1)) determines the CSI priority.

Alternatively, the UE may also decide the q-value/K based on which of class 1 (Cat.1) and class 2 (Cat.2) _q Value (or, q value/K) _q Whether the value is applied or not). The category 1 (cat.1) is a case where each CMR corresponds to a different TRP in one report setting (a reporting setting) of CSI report settings (for example, CSI-ReportConfig) set by higher layer control information. The category 2 (cat.2) is a case where a plurality of reporting settings (multiple reporting setting) of CSI reporting settings (for example, CSI-ReportConfig) set by higher layer control information correspond to different TRPs, respectively.

(third mode)

The third approach decides the priority of CSI considering parameters/values corresponding to measurement hypotheses (e.g., measurement hypotheses) and TRP indexes, respectively.

For example, in determining the priority of CSI, p (and K corresponding thereto) corresponding to TRP index information may be considered _p ) And q corresponding to the measurement hypothesis (and K corresponding thereto _q )。

When the multi-TRP is set and used, the CSI priority can be obtained by the following equation (4). The UE may control transmission of CSI reports (or PUCCH resources for transmitting CSI reports) based on priorities corresponding to the CSI reports in the event of collision of CSI reports (e.g., CSI reports with different measurement hypotheses) corresponding to the plurality of TRPs.

(4)

Pri _iCSI (y、k、c、s、p、q)＝2·N _cells ·M _s ·K _p ·K _q ·y+N _cells ·M _s ·K _p ·K _q ·k+M _s ·K _p ·K _q ·c+K _p ·K _q ·s+p·K _q +q

Here, p may correspond to TRP index information, and q may correspond to measurement hypothesis (measurement hypotheses). K (K) _p Or the total number of TRP indexes. K (K) _q Or the total number of measurement hypotheses.

< option 3-1 >)

In the case of trp=0 (or trp#0), p=0, in the case of trp=1 (or trp#1), p=1, in the case of single TRP measurement hypothesis, q=0, and in the case of multiple TRP measurement hypothesis, q=1 (see fig. 4A). The value of p/q, TRP corresponding to p/q, and the like are not limited thereto.

As shown in fig. 4A, in option 3-1, the priority of CSI of multiple TRPs from each TRP is set differently.

< option 3-2 >)

In the case of a single TRP measurement hypothesis (e.g., q=0), p may have two values, and in the case of trp=0, p=0, and in the case of trp=1, p=1 (see fig. 4B). The value of p/q, TRP corresponding to p/q, and the like are not limited thereto.

In the case of a multi-TRP measurement hypothesis (e.g., q=1), TRP information may also not be distinguished by p. Therefore, in the CSI priority decision rule, CRI (one CRI or two CRI) of two RI/PMI/CQI and multi-TRP (NCJT) may be treated as one CSI.

As shown in fig. 4B, in option 3-2, CSI of multiple TRP may also be regarded as a unit of CSI discard with the same priority. In other words, the CSI of multiple TRPs from each TRP is not further prioritized. In this case, p of CSI of the multiple TRP may also be the same.

In the second/third mode, the measurement assumption for the multiple TRP may be further or not distinguished for the priority of the NCJT CSI from two TRPs with one or two CRI, two LI/RI/PMI/CQI.

In formula (4), p is K corresponding to p _p Q, K corresponding to q _q May be set at other positions in the formula. In other words, in the formula (4), p is K corresponding to p _p Q, K corresponding to q _q The position of (c) may be changed and applied as appropriate.

In this way, by considering the measurement hypothesis and the TRP index, the priority of CSI between single TRP measurement hypothesis and multi TRP measurement hypothesis from different TRPs can be distinguished. Thus, even when CSI reports corresponding to a single TRP from different TRPs collide with CSI reports corresponding to multiple TRPs, CSI reports can be appropriately performed. Further, by considering the CSI priority for the single TRP measurement hypothesis/the multi TRP measurement hypothesis and the CSI priority of the TRP information, respectively, the priority of CSI reporting can be flexibly controlled.

In addition, the UE may also determine whether to use p-value/K in case of determining CSI priority _p Value/q value/K _q The value (or, formula (4)) is determined based on the CSI report setting (e.g., at least one of X and the category of CSI report).

For example, when x=0 is set in X CSI reports associated with a single TRP measurement hypothesis, p value/K is not required for determining the priority of CSI _p Value/q value/K _q Value (or, formula (4)). In such a case, the UE may not utilize q-value/K _q The value (or, equation (4)) and (e.g., using equation (1)) determines CSI priority.

Alternatively, the UE may also decide the q-value/K based on which of class 1 (Cat.1) and class 2 (Cat.2) _q Value (or, q value/K) _q Whether the value is applied or not).

(UE capability information)

In the first to third aspects, the following UE capability (UE capability) may be set. The following UE capabilities may be replaced with parameters (e.g., higher layer parameters) set to the UE from the network (e.g., base station).

UE capability information related to whether decision of CSI priority (or extension of CSI priority) considering TRP information is supported may also be defined.

UE capability information related to whether decision (or extension of CSI priority) of CSI priority considering single TRP measurement hypothesis/multi TRP measurement hypothesis is supported may also be defined.

UE capability information related to whether decision (or extension of CSI priority) of CSI priority considering both TRP information and single TRP measurement hypothesis/multiple TRP measurement hypothesis is supported may also be defined.

The first to third aspects may be applied to a UE supporting/reporting at least one of the UE capabilities described above. Alternatively, the first to third aspects may be applied to UEs set from the network.

The category 1 may be applied to any one of the first to third aspects. For category 2, CSI of different TRPs is set in different CSI reporting settings, so for one CSI reporting setting only single TRP/multiple TRP measurement hypotheses need to be considered. Therefore, class 2 may also be applied appropriately in the first manner.

(Wireless communication System)

The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

Fig. 5 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication by using long term evolution (Long Term Evolution (LTE)) standardized by the third generation partnership project (Third Generation Partnership Project (3 GPP)), the fifth generation mobile communication system new wireless (5 th generation mobile communication system New Radio (5G NR)), or the like.

The wireless communication system 1 may support dual connection (Multi-RAT dual connection (Multi-RAT Dual Connectivity (MR-DC))) between a plurality of radio access technologies (Radio Access Technology (RATs)). MR-DC may also include a dual connection of LTE (evolved universal terrestrial radio Access (Evolved Universal Terrestrial Radio Access (E-UTRA))) with NR (E-UTRA-NR dual connection (E-UTRA-NR Dual Connectivity (EN-DC))), NR with LTE (NR-E-UTRA dual connection (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

In EN-DC, a base station (eNB) of LTE (E-UTRA) is a Master Node (MN), and a base station (gNB) of NR is a Slave Node (SN). In NE-DC, the base station (gNB) of NR is MN and the base station (eNB) of LTE (E-UTRA) is SN.

The wireless communication system 1 may also support dual connections between multiple base stations within the same RAT (e.g., dual connection (NR-NR dual connection (NR-NR Dual Connectivity (NN-DC))) of a base station (gNB) where both MN and SN are NRs).

The radio communication system 1 may further include: a base station 11 forming a macro cell C1 having a relatively wide coverage area, and base stations 12 (12 a-12C) disposed in the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The arrangement, number, etc. of each cell and user terminal 20 are not limited to those shown in the drawings. Hereinafter, the base station 11 and the base station 12 are collectively referred to as a base station 10 without distinction.

The user terminal 20 may also be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) using a plurality of component carriers (Component Carrier (CC)) and Dual Connection (DC).

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

The user terminal 20 may communicate with at least one of time division duplex (Time Division Duplex (TDD)) and frequency division duplex (Frequency Division Duplex (FDD)) in each CC.

The plurality of base stations 10 may also be connected by wire (e.g., optical fiber based on a common public radio interface (Common Public Radio Interface (CPRI)), an X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is utilized as a backhaul between the base stations 11 and 12, the base station 11 corresponding to a higher-level station may be referred to as an integrated access backhaul (Integrated Access Backhaul (IAB)) host (donor), and the base station 12 corresponding to a relay station (relay) may be referred to as an IAB node.

The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The Core Network 30 may include at least one of an evolved packet Core (Evolved Packet Core (EPC)), a 5G Core Network (5 GCN), a next generation Core (Next Generation Core (NGC)), and the like, for example.

The user terminal 20 may be a terminal supporting at least one of communication schemes such as LTE, LTE-a, and 5G.

In the wireless communication system 1, a wireless access scheme based on orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) may be used. For example, cyclic prefix OFDM (Cyclic Prefix OFDM (CP-OFDM)), discrete fourier transform spread OFDM (Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access (OFDMA)), single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access (SC-FDMA)), and the like may be used in at least one of Downlink (DL)) and Uplink (UL).

The radio access scheme may also be referred to as waveform (waveform). In the radio communication system 1, other radio access schemes (for example, other single carrier transmission schemes and other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

In the radio communication system 1, as the downlink channel, a downlink shared channel (physical downlink shared channel (Physical Downlink Shared Channel (PDSCH))), a broadcast channel (physical broadcast channel (Physical Broadcast Channel (PBCH)))), a downlink control channel (physical downlink control channel (Physical Downlink Control Channel (PDCCH))), or the like shared by the user terminals 20 may be used.

In the radio communication system 1, an uplink shared channel (physical uplink shared channel (Physical Uplink Shared Channel (PUSCH))), an uplink control channel (physical uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (physical random access channel (Physical Random Access Channel (PRACH))), or the like shared by the user terminals 20 may be used as the uplink channel.

User data, higher layer control information, system information blocks (System Information Block (SIBs)) and the like are transmitted through the PDSCH. User data, higher layer control information, etc. may also be transmitted through PUSCH. In addition, a master information block (Master Information Block (MIB)) may also be transmitted through the PBCH.

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

The DCI for scheduling PDSCH may be referred to as DL assignment, DL DCI, or the like, and the DCI for scheduling PUSCH may be referred to as UL grant, UL DCI, or the like. The PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

In the detection of PDCCH, a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may also be utilized. CORESET corresponds to searching for the resources of DCI. The search space corresponds to a search region of PDCCH candidates (PDCCH candidates) and a search method. A CORESET may also be associated with one or more search spaces. The UE may also monitor CORESET associated with a certain search space based on the search space settings.

One search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels (aggregation Level). One or more search spaces may also be referred to as a set of search spaces. In addition, "search space", "search space set", "search space setting", "search space set setting", "CORESET setting", and the like of the present disclosure may also be replaced with each other.

Uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), acknowledgement information (for example, also referred to as hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK)), ACK/NACK, etc.), and scheduling request (Scheduling Request (SR)) may be transmitted through the PUCCH. The random access preamble for establishing a connection with a cell may also be transmitted through the PRACH.

In addition, in the present disclosure, downlink, uplink, etc. may also be expressed without "link". It may be expressed that the "Physical" is not provided at the beginning of each channel.

In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted. In the wireless communication system 1, as DL-RS, a Cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted.

The synchronization signal may be at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)), for example. The signal blocks including SS (PSS, SSs) and PBCH (and DMRS for PBCH) may also be referred to as SS/PBCH blocks, SS blocks (SSB)), or the like. In addition, SS, SSB, etc. may also be referred to as reference signals.

In the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a reference signal for measurement (sounding reference signal (Sounding Reference Signal (SRS))), a reference signal for Demodulation (DMRS), and the like may be transmitted. In addition, the DMRS may also be referred to as a user terminal specific reference signal (UE-specific Reference Signal).

(base station)

Fig. 6 is a diagram showing an example of a configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmitting/receiving unit 120, a transmitting/receiving antenna 130, and a transmission path interface (transmission line interface (transmission line interface)) 140. The control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided with one or more components.

In this example, the functional blocks of the characteristic part in the present embodiment are mainly shown, and it is also conceivable that the base station 10 has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 110 performs control of the entire base station 10. The control unit 110 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

The control unit 110 may also control generation of signals, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission/reception, measurement, and the like using the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission path interface 140. The control unit 110 may generate data, control information, a sequence (sequence), and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 120. The control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.

The transmitting/receiving unit 120 may include a baseband (baseband) unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmitting/receiving unit 120 may be configured of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmitting/receiving unit 120 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

The transmitting/receiving antenna 130 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transmitting/receiving unit 120 may transmit the downlink channel, the synchronization signal, the downlink reference signal, and the like. The transmitting/receiving unit 120 may receive the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 120 may also form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

The transmission/reception section 120 (transmission processing section 1211) may perform processing of a packet data convergence protocol (Packet Data Convergence Protocol (PDCP)) layer, processing of a radio link control (Radio Link Control (RLC)) layer (for example, RLC retransmission control), processing of a medium access control (Medium Access Control (MAC)) layer (for example, HARQ retransmission control), and the like with respect to data, control information, and the like acquired from the control section 110, for example, to generate a bit sequence to be transmitted.

The transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing, discrete fourier transform (Discrete Fourier Transform (DFT)) processing (if necessary), inverse fast fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, and digital-to-analog conversion on a bit string to be transmitted, and output a baseband signal.

The transmitting/receiving unit 120 (RF unit 122) may perform modulation, filter processing, amplification, etc. for the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 130.

On the other hand, the transmitting/receiving unit 120 (RF unit 122) may amplify, filter-process, demodulate a baseband signal, and the like, with respect to a signal in a radio frequency band received through the transmitting/receiving antenna 130.

The transmission/reception section 120 (reception processing section 1212) may apply, to the acquired baseband signal, reception processing such as analog-to-digital conversion, fast fourier transform (Fast Fourier Transform (FFT)) processing, inverse discrete fourier transform (Inverse Discrete Fourier Transform (IDFT)) processing (if necessary), filter processing, demapping, demodulation, decoding (error correction decoding may be included), MAC layer processing, RLC layer processing, and PDCP layer processing, and acquire user data.

The transmitting-receiving unit 120 (measuring unit 123) may also perform measurements related to the received signals. For example, measurement section 123 may perform radio resource management (Radio Resource Management (RRM)) measurement, channel state information (Channel State Information (CSI)) measurement, and the like based on the received signal. The measurement unit 123 may also measure reception power (for example, reference signal reception power (Reference Signal Received Power (RSRP))), reception quality (for example, reference signal reception quality (Reference Signal Received Quality (RSRQ)), signal-to-interference-plus-noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal-to-noise ratio (Signal to Noise Ratio (SNR))), signal strength (for example, received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (for example, CSI), and the like. The measurement results may also be output to the control unit 110.

The transmission path interface 140 may transmit and receive signals (backhaul signaling) to and from devices, other base stations 10, and the like included in the core network 30, or may acquire and transmit user data (user plane data), control plane data, and the like for the user terminal 20.

In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.

The transmitting-receiving unit 120 may also transmit information related to a measurement hypothesis (measurement hypotheses) of channel state information (Channel State Information (CSI)).

Control unit 110 may also control the reception of CSI reports transmitted according to priorities determined based on values associated with measurement hypotheses.

(user terminal)

Fig. 7 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting/receiving unit 220, and a transmitting/receiving antenna 230. The control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided with one or more types.

In this example, the functional blocks of the characteristic part in the present embodiment are mainly shown, and it is also conceivable that the user terminal 20 has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 210 performs control of the entire user terminal 20. The control unit 210 can be configured by a controller, a control circuit, or the like described based on common knowledge in the technical field of the present disclosure.

The control unit 210 may also control the generation of signals, mapping, etc. The control unit 210 may control transmission/reception, measurement, and the like using the transmission/reception unit 220 and the transmission/reception antenna 230. The control unit 210 may generate data, control information, a sequence, and the like transmitted as signals, and forward the generated data to the transmitting/receiving unit 220.

The transceiver unit 220 may also 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 of 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 knowledge in the technical field of the present disclosure.

The transmitting/receiving unit 220 may be configured as an integral transmitting/receiving unit, or may be configured by a transmitting unit and a receiving unit. The transmission means may be constituted by the transmission processing means 2211 and the RF means 222. The receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmitting/receiving antenna 230 may be constituted by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna or the like.

The transceiver unit 220 may also receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transceiver unit 220 may transmit the uplink channel, the uplink reference signal, and the like.

The transmitting-receiving unit 220 may also form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

The transmission/reception section 220 (transmission processing section 2211) may perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control) and the like for the data, control information and the like acquired from the control section 210, and generate a bit sequence to be transmitted.

The transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (error correction coding may be included), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion, and the like for a bit string to be transmitted, and output a baseband signal.

Further, whether to apply DFT processing may be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is activated (enabled), the transmission/reception section 220 (transmission processing section 2211) may perform DFT processing as the transmission processing for transmitting the channel using a DFT-s-OFDM waveform, or, if not, the transmission/reception section 220 (transmission processing section 2211) may not perform DFT processing as the transmission processing.

The transmitting/receiving unit 220 (RF unit 222) may perform modulation, filter processing, amplification, etc. for the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmitting/receiving antenna 230.

On the other hand, the transmitting/receiving unit 220 (RF unit 222) may amplify, filter-process, demodulate a baseband signal, and the like, with respect to a signal in a radio frequency band received through the transmitting/receiving antenna 230.

The transmitting/receiving section 220 (reception processing section 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (error correction decoding may be included), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data.

The transceiver unit 220 (measurement unit 223) may also perform measurements related to the received signals. For example, the measurement unit 223 may also perform RRM measurement, CSI measurement, and the like based on the received signal. The measurement unit 223 may also measure for 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 also be output to the control unit 210.

The transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.

The transmitting-receiving unit 220 may also receive information related to a measurement hypothesis (measurement hypotheses) of channel state information (Channel State Information (CSI)). Transmitting/receiving section 220 may transmit the CSI report selected based on the priority in the case of a plurality of CSI report collisions.

Control unit 210 may also determine a priority associated with channel state information (Channel State Information (CSI)) reporting based on at least the value associated with the measurement hypothesis (measurement hypotheses).

The value associated with the measurement hypothesis may be associated with at least one of a control resource set pool index, a reference signal port group, and a transmission setting index (TCI) state, in addition to the measurement hypothesis.

The control unit 210 may also determine the priority based on a value associated with the measurement hypothesis and other values associated with at least one of the control resource set pool index, the reference signal port group, and the transmit setting index (TCI) state.

The control unit 210 may also decide the priority in consideration of the number of measurement hypotheses set through higher layer signaling.

(hardware construction)

The block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by one device physically or logically combined, or two or more devices physically or logically separated may be directly or indirectly connected (for example, by a wire, a wireless, or the like) and realized by these plural devices. The functional blocks may also be implemented by combining the above-described device or devices with software.

Here, the functions include, but are not limited to, judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcasting), notification (notification), communication (communication), forwarding (forwarding), configuration (configuration), reconfiguration (reconfiguration), allocation (mapping), assignment (allocation), and the like. For example, a functional block (structural unit) that realizes the transmission function may also be referred to as a transmission unit (transmitting unit), a transmitter (transmitter), or the like. As described above, the implementation method is not particularly limited.

For example, a base station, a user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 8 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to one embodiment. The base station 10 and the 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, and the like.

In addition, in the present disclosure, terms of devices, circuits, apparatuses, parts (sections), units, and the like can be replaced with each other. The hardware configuration 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 not include a part of the devices.

For example, the processor 1001 is shown as only one, but there may be multiple processors. Further, the processing may be performed by one processor, or the processing may be performed by two or more processors simultaneously, sequentially, or by other means. The processor 1001 may be realized by one or more chips.

Each function in the base station 10 and the user terminal 20 is realized by, for example, reading specific software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001, controlling communication via the communication device 1004, or controlling at least one of reading and writing of data in the memory 1002 and the memory 1003.

The processor 1001, for example, causes an operating system to operate to control the entire computer. The processor 1001 may be configured by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, at least a part of the control unit 110 (210), the transmitting/receiving unit 120 (220), and the like described above may be implemented by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, or the like from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiments can be used. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same may be implemented for other functional blocks.

The Memory 1002 may be a computer-readable recording medium, and may be configured from at least one of a Read Only Memory (ROM), an erasable programmable Read Only Memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable Read Only Memory (Electrically EPROM (EEPROM)), a random access Memory (Random Access Memory (RAM)), and other suitable storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The memory 1002 can store programs (program codes), software modules, and the like executable to implement a wireless communication method according to one embodiment of the present disclosure.

The storage 1003 may also be a computer-readable recording medium, for example, constituted by at least one of a flexible disk (flexible Disc), a soft (registered trademark)) disk, an magneto-optical disk (for example, a Compact disk read only memory (CD-ROM), etc., a digital versatile disk, a Blu-ray (registered trademark) disk, a removable magnetic disk (removables), a hard disk drive, a smart card (smart card), a flash memory device (for example, card, stick, key drive), a magnetic stripe (strip), a database, a server, and other suitable storage media. The storage 1003 may also be referred to as secondary storage.

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 referred to as a network device, a network controller, a network card, a communication module, or the like, for example. In order to realize at least one of frequency division duplexing (Frequency Division Duplex (FDD)) and time division duplexing (Time Division Duplex (TDD)), the communication device 1004 may be configured to include a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. For example, the transmitting/receiving unit 120 (220), the transmitting/receiving antenna 130 (230), and the like described above may be implemented by the communication device 1004. The transmitting/receiving unit 120 (220) may be implemented by physically or logically separate transmitting units 120a (220 a) and receiving units 120b (220 b).

The input device 1005 is an input apparatus (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, or the like) that receives an input from the outside. The output device 1006 is an output apparatus (for example, a display, a speaker, a light emitting diode (Light Emitting Diode (LED)) lamp, or the like) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

The processor 1001, the memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be configured by a single bus or may be configured by different buses between devices.

The base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an application specific integrated circuit (Application Specific Integrated Circuit (ASIC)), a programmable logic device (Programmable Logic Device (PLD)), and a field programmable gate array (Field Programmable Gate Array (FPGA)), or may use the hardware to realize a part or all of the functional blocks. For example, the processor 1001 may also be implemented with at least one of these hardware.

(modification)

In addition, with respect to terms described in the present disclosure and terms required for understanding the present disclosure, terms having the same or similar meanings may be substituted. For example, channels, symbols, and signals (signals or signaling) may also be interchanged. In addition, the signal may also be a message. The Reference Signal (RS) can also be simply referred to as RS, and may also be referred to as Pilot (Pilot), pilot Signal, or the like, depending on the standard applied. In addition, the component carrier (Component Carrier (CC)) may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

A radio frame may also consist of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be formed of one or more slots in the time domain. The subframes may also be a fixed length of time (e.g., 1 ms) independent of the parameter set (numerology).

Here, the parameter set may also refer to a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SubCarrier Spacing (SCS)), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (Transmission Time Interval (TTI)), a number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in a frequency domain, a specific windowing (windowing) process performed by a transceiver in a time domain, and the like.

A slot may also be formed from one or more symbols in the time domain, orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) symbols, single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access (SC-FDMA)) symbols, and so on. Furthermore, the time slots may also be time units based on parameter sets.

The time slot may also contain a plurality of mini-slots. Each mini-slot may also be formed of one or more symbols in the time domain. In addition, the mini-slot may also be referred to as a sub-slot. Mini-slots may also be made up of a fewer number of symbols than slots. PDSCH (or PUSCH) transmitted in a larger time unit than the mini-slot may also be referred to as PDSCH (PUSCH) mapping type a. PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (PUSCH) mapping type B.

The radio frame, subframe, slot, mini-slot, and symbol each represent a unit of time when a signal is transmitted. The radio frames, subframes, slots, mini-slots, and symbols may also use other designations that each corresponds to. In addition, the frame, subframe, slot, mini-slot, symbol, and the like units in the present disclosure may also be replaced with each other.

For example, one subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and one slot or one mini-slot may also be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the conventional LTE, may be a period (for example, 1 to 13 symbols) shorter than 1ms, or may be a period longer than 1 ms. The unit indicating the TTI may be referred to as a slot, a mini-slot, or the like, instead of a subframe.

Here, TTI refers to, for example, a scheduled minimum time unit in wireless communication. For example, in the LTE system, a base station performs scheduling for each user terminal to allocate radio resources (frequency bandwidth, transmission power, and the like that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a data packet (transport block), a code block, a codeword, or the like subjected to channel coding, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, a time interval (e.g., the number of symbols) to which a transport block, a code block, a codeword, etc. is actually mapped may also be shorter than the TTI.

In addition, in the case where one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may also be the minimum time unit of scheduling. In addition, the number of slots (mini-slots) constituting the minimum time unit of the schedule can also be controlled.

A TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in 3gpp rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a slot, etc. A TTI that is shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be replaced with a TTI having a TTI length less than the long TTI and a TTI length of 1ms or more.

A Resource Block (RB) is a Resource allocation unit of a time domain and a frequency domain, and may include one or a plurality of consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the parameter set, and may be 12, for example. The number of subcarriers included in the RB may also be decided based on the parameter set.

Further, the RB may also contain one or more symbols in the time domain, and may be one slot, one mini-slot, one subframe, or one TTI length. One TTI, one subframe, etc. may also be respectively composed of one or more resource blocks.

In addition, one or more RBs may also be referred to as Physical Resource Blocks (PRBs), subcarrier groups (SCGs), resource element groups (Resource Element Group (REGs)), PRB pairs, RB peering.

Furthermore, a Resource block may also be composed of one or more Resource Elements (REs). For example, one RE may be a subcarrier and a radio resource area of one symbol.

A Bandwidth Part (BWP) (which may also be referred to as a partial Bandwidth or the like) may also represent a subset of consecutive common RBs (common resource blocks (common resource blocks)) for a certain parameter set in a certain carrier. Here, the common RB may also be determined by an index of the RB with reference to the common reference point of the carrier. PRBs may be defined in a BWP and numbered in the BWP.

The BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). For the UE, one or more BWP may be set in one carrier.

At least one of the set BWP may be active, and the UE may not contemplate transmission and reception of a specific channel/signal other than the active BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced with "BWP".

The above-described configurations of radio frames, subframes, slots, mini slots, symbols, and the like 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 mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously changed.

The information, parameters, and the like described in the present disclosure may be expressed in absolute values, relative values to a specific value, or other corresponding information. For example, radio resources may also be indicated by a particular index.

In the present disclosure, the names used for parameters and the like are not restrictive names in all aspects. Further, the mathematical expression or the like using these parameters may also be different from that explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting names in all respects.

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips (chips), and the like may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Further, information, signals, etc. can be output in at least one of the following directions: from higher layer (upper layer) to lower layer (lower layer), and from lower layer to higher layer. Information, signals, etc. may also be input and output via a plurality of network nodes.

The input/output information, signals, and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. The input and output information, signals, etc. may be overwritten, updated, or added. The outputted information, signals, etc. may also be deleted. The input information, signals, etc. may also be transmitted to other devices.

The notification of information is not limited to the embodiment described in the present disclosure, but may be performed by other methods. For example, notification of information in the present disclosure may also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI)))), higher layer signaling (e.g., radio resource control (Radio Resource Control (RRC)) signaling, broadcast information (master information block (Master Information Block (MIB)), system information block (System Information Block (SIB)) or the like), medium access control (Medium Access Control (MAC)) signaling), other signals, or a combination thereof.

The physical Layer signaling may be referred to as Layer 1/Layer 2 (L1/L2)) control information (L1/L2 control signal), L1 control information (L1 control signal), or the like. The RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration)) message, or the like. The MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).

Note that the notification of specific information (for example, notification of "X") is not limited to explicit notification, and may be performed implicitly (for example, by notification of no specific information or notification of other information).

The determination may be performed by a value (0 or 1) represented by one bit, a true or false value (boolean) represented by true or false, or a comparison of values (e.g., with a specific value).

Software, whether referred to as software (firmware), middleware (middleware-ware), microcode (micro-code), hardware description language, or by other names, should be broadly interpreted as meaning instructions, instruction sets, codes (codes), code segments (code fragments), program codes (program codes), programs (programs), subroutines (sub-programs), software modules (software modules), applications (applications), software applications (software application), software packages (software packages), routines (routines), subroutines (sub-routines), objects (objects), executable files, threads of execution, procedures, functions, and the like.

In addition, software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, in the case where software is transmitted from a website, server, or other remote source (remote source) using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (Digital Subscriber Line (DSL)), etc.) and wireless technology (infrared, microwave, etc.), at least one of the wired technology and wireless technology is included in the definition of transmission medium.

The terms "system" and "network" as used in this disclosure can be used interchangeably. "network" may also refer to devices (e.g., base stations) contained in a network.

In the context of the present disclosure of the present invention, terms such as "precoding", "precoder", "weight", "Quasi Co-Location", "transmission setting instruction state (Transmission Configuration Indication state (TCI state))", "spatial relation", "spatial filter (spatial domain filter)", "transmission power", "phase rotation", "antenna port group", "layer number", "rank", "resource set", "resource group", "beam width", "beam angle", "antenna element", "panel", and the like can be used interchangeably.

In the present disclosure, terms such as "Base Station (BS))", "radio Base Station", "fixed Station", "NodeB", "eNB (eNodeB)", "gNB (gndeb)", "access Point", "Transmission Point (Transmission Point (TP))", "Reception Point (RP))", "Transmission Reception Point (Transmission/Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", and the like can be used interchangeably. There are also cases where the base station is referred to by terms of a macrocell, a small cell, a femtocell, a picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. In the case of a base station accommodating a plurality of cells, the coverage area of the base station can be divided into a plurality of smaller areas, each of which can also provide communication services through a base station subsystem, such as a small base station for indoor use (remote radio head (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a portion or the entirety of the coverage area of at least one of the base station and the base station subsystem that is in communication service within that coverage area.

In the present disclosure, terms such as "Mobile Station (MS)", "User terminal", "User Equipment (UE)", and "terminal" are used interchangeably.

There are also situations where a mobile station is referred to by a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held communicator (hand set), user agent, mobile client, or several other suitable terms.

At least one of the base station and the mobile station may also be referred to as a transmitting apparatus, a receiving apparatus, a wireless communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on a mobile body, or the like. The mobile body may be a vehicle (e.g., a vehicle, an airplane, etc.), a mobile body that moves unmanned (e.g., an unmanned aerial vehicle (clone), an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may be an internet of things (Internet of Things (IoT)) device such as a sensor.

In addition, the base station in the present disclosure may be replaced with a user terminal. For example, the various modes/embodiments of the present disclosure may also be applied to a structure in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (for example, may also be referred to as Device-to-Device (D2D)), vehicle-to-evaluation (V2X), or the like. In this case, the user terminal 20 may have the functions of the base station 10 described above. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "side"). For example, the uplink channel, the downlink channel, etc. may be replaced with a side channel.

Likewise, the user terminal in the present disclosure may be replaced with a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

In the present disclosure, an operation performed by a base station is sometimes performed by an upper node (upper node) thereof, as the case may be. Obviously, in a network comprising one or more network nodes (network nodes) with base stations, various operations performed for communication with a terminal may be performed by a base station, one or more network nodes other than a base station (e.g. considering a mobility management entity (Mobility Management Entity (MME)), a Serving-Gateway (S-GW)), or the like, but not limited thereto, or a combination thereof.

The embodiments described in the present disclosure may be used alone, in combination, or switched according to execution. The processing procedures, sequences, flowcharts, and the like of the embodiments and embodiments described in this disclosure may be changed in order as long as they are not contradictory. For example, for the methods described in the present disclosure, elements of the various steps are presented using the illustrated order, but are not limited to the particular order presented.

The various modes/embodiments described in the present disclosure can also be applied to long term evolution (Long Term Evolution (LTE)), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth generation mobile communication system (4 th generation mobile communication system (4G)), fifth generation mobile communication system (5 th generation mobile communication system (5G)), sixth generation mobile communication system (6 th generation mobile communication system (6G)), x-th generation mobile communication system (xth generation mobile communication system (xG) (xG (x is, for example, an integer, a small number)), future wireless access (Future Radio Access (FRA)), new-Radio Access Technology (RAT)), new wireless (New Radio (NR)), new wireless access (NX)), new generation wireless access (Future generation Radio access (FX)), global system (Global System for Mobile communications (GSM (registered trademark)), 2000, ultra mobile broadband (Ultra Mobile Broadband (IEEE) 802.11 (Fi-802.16 (Wi) and WiMAX (registered trademark)), wireless (20, ultra WideBand (Ultra WideBand), and the like, and further extended based on the methods of their own (IEEE) and the like, multiple systems may also be applied in combination (e.g., LTE or LTE-a, in combination with 5G, etc.).

The term "based on" as used in the present disclosure does not mean "based only on" unless otherwise specified. In other words, the expression "based on" means "based only on" and "based at least on" both.

Any reference to elements using references to "first," "second," etc. in this disclosure does not fully define the amount or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to a first and second element do not indicate that only two elements may be employed, or that the first element must take precedence over the second element in some manner.

The term "determining" used in the present disclosure is in the case of including various operations. For example, the "judgment (decision)" may be a case where judgment (decision), calculation (calculation), processing (processing), derivation (development), investigation (investigation), search (lookup), search, inquiry (search in a table, database, or other data structure), confirmation (acceptance), or the like is regarded as "judgment (decision)".

The "determination (decision)" may be a case where reception (e.g., reception of information), transmission (e.g., transmission of information), input (input), output (output), access (processing) (e.g., access to data in a memory), or the like is regarded as "determination (decision)".

The "judgment (decision)" may be a case where resolution (resolution), selection (selection), selection (setting), establishment (establishment), comparison (comparison), or the like is regarded as "judgment (decision)". That is, the "judgment (decision)" may be a case where some actions are regarded as making the "judgment (decision)".

Further, "judgment (decision)" may be replaced with "assumption", "expectation", "consider", or the like.

The terms "connected", "coupled", or all variations thereof as used in this disclosure mean all connections or couplings, either direct or indirect, between two or more elements thereof, and can include the case where one or more intervening elements are present between two elements that are "connected" or "coupled" to each other. The combination or connection of the elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access".

In the present disclosure, in the case of connecting two elements, it can be considered that one or more wires, cables, printed electrical connections, etc. are used, and electromagnetic energy having wavelengths in the radio frequency domain, the microwave region, the optical (both visible and invisible) region, etc. are used as several non-limiting and non-inclusive examples to "connect" or "combine" with each other.

In the present disclosure, the term "a is different from B" may also mean that "a is different from B". In addition, the term may also mean that "A and B are each different from C". Terms such as "separate," coupled, "and the like may also be similarly construed as" different.

In the present disclosure, when "including", and variations thereof are used, these terms are meant to be inclusive in the same sense as the term "comprising". Further, the term "or" as used in this disclosure does not mean exclusive or.

In the present disclosure, for example, in the case where an article is appended by translation as in a, an, and the in english, the present disclosure may also include the case where a noun following the article is in plural form.

While the invention according to the present disclosure has been described in detail, it will be apparent 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 a modification and variation without departing from the spirit and scope of the invention defined based on the description of the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not intended to limit the invention in any way.

Claims (6)

1. A terminal, comprising:

a control unit configured to determine a priority associated with reporting of channel state information (Channel State Information (CSI)) based on at least a value associated with a measurement hypothesis (measurement hypotheses); and

and a transmitting unit configured to transmit a CSI report selected based on the priority in a case where a plurality of CSI reports collide.

2. The terminal of claim 1, wherein,

the value is associated with at least one of a control resource set pool index, a reference signal port group, and a transmission setting index (TCI) state, in addition to the measurement hypothesis.

3. The terminal of claim 1, wherein,

The control unit determines the priority based on a value associated with the measurement hypothesis and other values associated with at least one of a control resource set pool index, a reference signal port group, and a transmission setting index (TCI) state.

4. The terminal according to any one of claim 1 to claim 3, wherein,

the control unit also decides the priority taking into account the number of measurement hypotheses set by higher layer signaling.

5. A wireless communication method for a terminal includes:

a step of deciding a priority related to reporting of channel state information (Channel State Information (CSI)) based on at least a value associated with a measurement hypothesis (measurement hypotheses); and

in case of multiple CSI report collisions, transmitting CSI reports selected based on the priorities.

6. A base station, comprising:

a transmission unit that transmits information related to a measurement hypothesis (measurement hypotheses) of channel state information (Channel State Information (CSI)); and

and a control unit configured to control reception of the CSI report transmitted according to a priority determined based on a value associated with the measurement hypothesis.