Terminal and communication method

Abstract

A terminal is provided with: a reception unit that receives, from a base station, settings relating to a channel state information report, which is a CSI report; a control unit that, on the basis of a report setting included in the setting, performs measurement of a CSI-RS transmitted from the base station, the CSI-RS being a channel state information reference signal; and a transmission unit that, on the basis of the result of the measurement, transmits a CSI report to the base station via a physical uplink control channel (PUCCH), the control unit activates, on the basis of an identifier specifying a sub-setting included in the report setting, an SP-CSI corresponding to the sub-setting, the SP-CSI being semi-persistent channel state information.

Description

TECHNICAL FIELD

[0001] The present application relates to a terminal in a wireless communication system and a communication method. BACKGROUND

[0002] In NR (New Radio) (also referred to as "5G"), which is a successor system to LTE (Long Term Evolution), as a requirement, technologies satisfying a large capacity system, a high-speed data transmission rate, a low delay, simultaneous connection of a plurality of terminals, a low cost, power saving, and the like are being researched (for example, Non-Patent Literature 1).

[0003] In addition, in Release 18 of 3GPP (registered trademark), in order to realize environmental sustainability, carbon neutrality, SDGs (Sustainable Development Goals), reduction of operating costs, and the like, the importance of increasing network energy savings and methods of energy saving are being researched (for example, Non-Patent Literature 2).

[0004] Prior Art Documents

[0005] Non-Patent Literature 1: 3GPP TS 38.300 V17.3.0 (2022-12)

[0006] Non-Patent Literature 2: "New WID: Network energy savings for NR", RP-223540, 3GPP TSG RAN Meeting #98-e, December 2022

[0007] Non-Patent Literature 3: 3GPP TS 38.331 V17.3.0 (2022-12)

[0008] Non-Patent Literature 4: 3GPP TS 38.321 V17.3.0 (2022-12) SUMMARY

[0009] Problems to be Solved by the Invention

[0010] In order to realize carbon neutrality and SDGs, the importance of saving base station power consumption is increasing. As a method of power reduction in a network, reinforcement in a spatial region and a power region is being studied. For example, in order to efficiently adapt a spatial element such as an antenna port, an active transmitter chain, and a power offset between a PDSCH (Physical Downlink Shared Channel) and a CSI-RS (Channel state information Reference Signal), a process related to CSI (Channel state information) involved in measurement and reporting needs to be reinforced.

[0011] The present application has been achieved in view of the above-described circumstances, and an object thereof is to reinforce a process related to CSI (Channel state information) involved in measurement and reporting in a wireless communication system.

[0012] Means for solving the problem

[0013] According to the disclosed technology, a terminal is provided with a reception section that receives a setting related to CSI reporting from a base station, a control section that performs measurement of a CSI-RS transmitted from the base station based on a reporting setting included in the setting, the CSI-RS referring to a Channel State Information Reference Signal, and a transmission section that transmits a CSI report to the base station via a PUCCH based on a result of the measurement, the control section activating SP-CSI corresponding to a sub-setting included in the reporting setting based on an identifier that determines the sub-setting, the SP-CSI referring to Semi-Persistent Channel State Information.

[0014] Effects of the invention

[0015] According to the disclosed technology, in a wireless communication system, a process related to CSI (Channel state information) involved in measurement and reporting can be reinforced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a diagram showing an example of a structure of a wireless communication system.

[0017] Figure 2 is a diagram showing an example of a setting related to SP-CSI reporting in a PUCCH.

[0018] Figure 3 is a diagram showing an example of a setting related to SP-CSI reporting in a PUSCH.

[0019] Figure 4 FIG. 1 is a diagram showing an example of a configuration related to aperiodic CSI reporting.

[0020] Figure 5 FIG. 2 is a diagram showing an example (1) of RRC specification change of the embodiment of the present application.

[0021] Figure 6 FIG. 3 is a diagram showing an example (2) of RRC specification change of the embodiment of the present application.

[0022] Figure 7 FIG. 4 is a diagram showing an example (3) of RRC specification change of the embodiment of the present application.

[0023] Figure 8 FIG. 5 is a diagram showing an example (4) of RRC specification change of the embodiment of the present application.

[0024] Figure 9 FIG. 6 is a diagram showing an example (1) of MAC-CE of the embodiment of the present application.

[0025] Figure 10 FIG. 7 is a diagram showing an example (2) of MAC-CE of the embodiment of the present application.

[0026] Figure 11 FIG. 8 is a diagram showing an example (3) of MAC-CE of the embodiment of the present application.

[0027] Figure 12 FIG. 9 is a diagram showing an example (4) of MAC-CE of the embodiment of the present application.

[0028] Figure 13 FIG. 10 is a diagram showing an example (5) of MAC-CE of the embodiment of the present application.

[0029] Figure 14 FIG. 11 is a diagram showing an example (6) of MAC-CE of the embodiment of the present application.

[0030] Figure 15 FIG. 12 is a diagram showing an example (7) of MAC-CE of the embodiment of the present application.

[0031] Figure 16 FIG. 13 is a diagram showing an example of activation or deactivation of sub-configuration of the embodiment of the present application.

[0032] Figure 17 FIG. 14 is a diagram showing an example (1) of triggering of sub-configuration of the embodiment of the present application.

[0033] Figure 18 FIG. 15 is a diagram showing an example (5) of RRC specification change of the embodiment of the present application.

[0034] Figure 19 FIG. 8 is a diagram showing an example (6) of RRC specification change of the embodiment of the present application.

[0035] Figure 20 FIG. 9 is a diagram showing an example (7) of RRC specification change of the embodiment of the present application.

[0036] Figure 21 FIG. 10 is a diagram showing an example (2) of triggering of subsetting of the embodiment of the present application.

[0037] Figure 22 FIG. 11 is a diagram showing an example (8) of RRC specification change of the embodiment of the present application.

[0038] Figure 23 FIG. 12 is a diagram showing an example (9) of RRC specification change of the embodiment of the present application.

[0039] Figure 24 FIG. 13 is a diagram showing an example (3) of triggering of subsetting of the embodiment of the present application.

[0040] Figure 25 FIG. 14 is a diagram showing an example (10) of RRC specification change of the embodiment of the present application.

[0041] Figure 26 FIG. 15 is a diagram showing an example (11) of RRC specification change of the embodiment of the present application.

[0042] Figure 27 FIG. 16 is a diagram showing an example (4) of triggering of subsetting of the embodiment of the present application.

[0043] Figure 28 FIG. 17 is a diagram showing an example (5) of triggering of subsetting of the embodiment of the present application.

[0044] Figure 29 FIG. 18 is a diagram showing an example of functional structure of the base station 10 of the embodiment of the present application.

[0045] Figure 30 FIG. 19 is a diagram showing an example of functional structure of the terminal 20 of the embodiment of the present application.

[0046] Figure 31 FIG. 20 is a diagram showing an example of hardware structure of the base station 10 or the terminal 20 of the embodiment of the present application.

[0047] Figure 32 FIG. 21 is a diagram showing an example of structure of the vehicle 2001 in the embodiment of the present application. DETAILED DESCRIPTION

[0048] Hereinafter, the embodiment of the present application will be described with reference to the drawings. Note that the following embodiment is merely an example, and the embodiment of the present application is not limited to the following embodiment.

[0049] In the operation of the wireless communication system of the embodiment of the present application, a related art is appropriately used. Among them, the related art is, for example, the existing LTE, but is not limited to the existing LTE. Further, unless otherwise specified, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and beyond LTE-Advanced (for example: NR).

[0050] Further, in the embodiment of the present application described below, the terms SS (Synchronization Signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel) and the like used in the existing LTE are used. These are for ease of description, and the same signals, functions and the like can be referred to by other names. Further, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH and the like. However, even for signals for NR, "NR-" is not necessarily explicitly described.

[0051] Further, in the embodiment of the present application, the duplex (Duplex) method can be a TDD (Time Division Duplex) method, or can be an FDD (Frequency Division Duplex) method, or can be a method other than these (for example, Flexible Duplex, etc.).

[0052] Further, in the embodiment of the present application, "configuring" a radio parameter or the like can be pre-configuring a predetermined value, or can be configuring a radio parameter notified from the base station 10 or the terminal 20.

[0053] Figure 1 is a diagram showing a configuration example (1) of a wireless communication system in an embodiment of the present application. As Figure 1 indicated, the wireless communication system in the embodiment of the present application includes a base station 10 and a terminal 20. In Figure 1 , one base station 10 and one terminal 20 are each shown, but this is merely an example, and there can be a plurality of each.

[0054] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. A physical resource of a wireless signal is defined by a time domain and a frequency domain, the time domain can be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain can be defined by the number of subcarriers or the number of resource blocks. The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, an NR-PSS and an NR-SSS. The system information is transmitted by, for example, an NR-PBCH, and is also called broadcast information. The synchronization signal and the system information can also be called an SSB (SS / PBCH block). As Figure 1 indicated, the base station 10 transmits a control signal or data to the terminal 20 through a DL (Downlink), and receives a control signal or data from the terminal 20 through a UL (Uplink). Both the base station 10 and the terminal 20 are capable of performing beamforming to perform transmission and reception of signals. In addition, both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) based communication to the DL or the UL. In addition, both the base station 10 and the terminal 20 can also perform communication via a secondary cell (SCell) and a primary cell (PCell) based on CA (Carrier Aggregation). Also, the terminal 20 can perform communication via a primary cell of the base station 10 and a primary SCG cell (PSCell) of another base station 10 based on DC (Dual Connectivity).

[0055] The terminal 20 is a communication device such as a smartphone, a mobile phone, a tablet, a wearable terminal, a communication module for M2M (Machine-to-Machine), or the like, which has a wireless communication function. As Figure 1As illustrated, the terminal 20 receives a control signal or data from the base station 10 through a DL and transmits a control signal or data to the base station 10 through a UL, thereby utilizing various communication services provided by the wireless communication system. In addition, the terminal 20 receives various reference signals transmitted from the base station 10 and performs measurement of a propagation path quality based on a reception result of the reference signals.

[0056] The terminal 20 can perform carrier aggregation in which a plurality of cells (a plurality of CCs (Component Carriers)) are bundled and communication with the base station 10 is performed. In the carrier aggregation, one PCell (Primary cell) and one or more SCells (Secondary cells) are used. In addition, a PUCCH-SCell having a PUCCH can also be used.

[0057] In order to realize carbon neutrality and SDGs, the importance of saving base station power consumption is increasing. As a method of power reduction in a network, reinforcement in a spatial region and a power region is being studied. For example, in order to efficiently perform adaptation of a spatial element such as an antenna port, an activated transmitter chain, and a power offset between a PDSCH (Physical Downlink Shared Channel) and a CSI-RS (Channel state information Reference Signal), a process related to CSI (Channel state information) involved in measurement and reporting needs to be reinforced.

[0058] Here, the terminal 20 can support reporting of CSI associated with N sub-configurations out of L sub-configurations in one reporting instance for a CSI reporting configuration with the L sub-configurations. N is 1 or more and L or less, and each CSI corresponds to one sub-configuration. This reporting can be applied to SP-CSI (Semi-persistent CSI) and can be applied to Aperiodic CSI. In addition, the maximum value of N and L can be decided based on a UE capability.

[0059] Hereinafter, a "CSI reporting configuration" can also be capable of being mutually replaced with a "reporting configuration" and a "CSI-ReportConfig". In addition, the terminal 20 can also receive a configuration related to CSI measurement and reporting from the base station 10, perform measurement of a CSI-RS transmitted from the base station 10 based on the configuration, and transmit a CSI report to the base station 10 based on a result of the measurement.

[0060] Figure 2 is a diagram showing an example of setting related to SP-CSI reporting in PUCCH. As shown in Figure 2 , RRC sets multiple semiPersistentOnPUCCH in reporting setting (CSI-Report Config), and MAC-CE (Medium Access Control-Control Element) makes one or more reporting settings valid or invalid, or activates or deactivates (refer to Non-Patent Literatures 3 and 4).

[0061] The field S0 of MAC-CE corresponds to the reporting setting containing PUCCH resource reporting SP-CSI in the notified BWP, which has the smallest CSI-ReportConfigld in the list with the type set to semiPersistentOnPUCCH.

[0062] If the field S i of MAC-CE is set to the value 1, the corresponding SP-CSI reporting setting is valid or activated. If the field S i of MAC-CE is set to the value 0, the corresponding SP-CSI reporting setting is invalid or deactivated.

[0063] Figure 3 is a diagram showing an example of setting related to SP-CSI reporting in PUSCH. As shown in Figure 3 , RRC sets up to 64 CSI-SemiPersistentOnPUSCH-TriggerState, and DCI triggers one CSI-SemiPersistentOnPUSCH-TriggerState. One CSI-SemiPersistentOnPUSCH-TriggerState corresponds to one CSI reporting setting.

[0064] Figure 4 is a diagram showing an example of setting related to aperiodic CSI reporting. As shown in Figure 4As shown, RRC configures up to 128 CSI-AperiodicTriggerState, MAC-CE down-selects in a range of up to 63, and DCI triggers one. One CSI-AperiodicTriggerState corresponds to up to 16 CSI-AssociatedReportConfigInfo, i.e. up to 16 CSI. One CSI-AssociatedReportConfigInfo corresponds to one CSI reporting configuration.

[0065] The field T0 / T1 / … of MAC-CE corresponds to the 1st / 2nd / … CSI-AperiodicTriggerState of CSI-AperiodicTriggerStateList. When Ti is 1, it is mapped to DCI codepoint; otherwise, it is not mapped to DCI codepoint. Up to 63 CSI-AperiodicTriggerState is mapped to DCI codepoint.

[0066] SP-CSI reporting and aperiodic CSI reporting need to support the framework of reporting N CSI associated with N sub-sets in L sub-sets in one CSI reporting configuration.

[0067] On the other hand, in the framework of conventional CSI reporting, this action is not supported. The framework of conventional CSI reporting only supports triggering CSI associated with one or more CSI reporting configurations, but does not support triggering CSI associated with sub-sets in a certain CSI reporting configuration.

[0068] Here, in order to save network energy, the following actions 1) to 4) can also be performed.

[0069] Action 1) defines sub-set ID for sub-set in CSI reporting configuration

[0070] Action 2) SP-CSI reporting in PUCCH

[0071] Action 3) SP-CSI reporting in PUSCH

[0072] Action 4) Aperiodic CSI reporting in PUSCH

[0073] Hereinafter, Action 1) defining sub-set ID for sub-set in CSI reporting configuration is described.

[0074] Action 1-1) A new IE (Information element) can also be defined.

[0075] Action 1-1-1) The new IE can be a local ID identifying a CSI reporting sub-configuration within a certain CSI reporting configuration. Each CSI reporting sub-configuration within a certain CSI reporting configuration can be assigned an ID by the new IE. The value of the ID facing sub-configurations in different CSI reporting configurations can be the same or different. The maximum number of sub-configurations per CSI reporting configuration can be defined by an IE or a fixed value.

[0076] For example, the maximum number of sub-configurations per CSI reporting configuration can be 2, or 3, 4, or other values. For example, the maximum number of sub-configurations per CSI reporting configuration can be the same or different in SP-CSI reported by PUCCH, SP-CSI reported by PUSCH, A-CSI (Aperiodic CSI), and P-CSI (Periodic CSI).

[0077] Figure 5 FIG. 1-1-1 is a diagram illustrating an example (1) of RRC specification change of an embodiment of the present application. As shown in FIG. 1-1-1, a local ID facing a sub-configuration can be defined by an IE, for example, “CSI-ReportSubConfigId-r18”. The maximum number of IDs included in the list reportSubConfigList-r18 of the local ID can be the same as the maximum value of the ID. The maximum number of sub-configurations per CSI reporting configuration can be defined by an IE, for example, “maxNrofCSI-SubConfigPerReportConfig-r18”. Figure 5

[0078] Action 1-1-2) The new IE can be a global ID identifying a CSI reporting sub-configuration within all CSI reporting configurations. The global ID identifies only a sub-configuration. Each CSI reporting sub-configuration within all CSI reporting configurations can be assigned an ID by the new IE. The value of the ID facing sub-configurations in different CSI reporting configurations can be different. The maximum number of sub-configurations in all CSI reporting configurations can be defined by an IE or a fixed value.

[0079] For example, the maximum number of sub-configurations in all CSI reporting configurations can be 16, or 32, 48, 64, or other values.

[0080] Figure 6 FIG. 1-1-2 is a diagram illustrating an example (2) of RRC specification change of an embodiment of the present application. As shown in FIG. 1-1-2, a global ID facing a sub-configuration can be defined by an IE, for example, “CSI-ReportSubConfigId-r18”. The maximum number of IDs included in the list reportSubConfigList-r18 of the global ID can be the same as the maximum value of the ID. The maximum number of sub-configurations in all CSI reporting configurations can be defined by an IE, for example, “maxNrofCSI-SubConfig-r18”. Figure 6 ​As shown, the local ID per sub-configuration can be defined by the IE “CSI-ReportSubConfigId-r18”, for example. The maximum number of sub-configurations can be defined by the IE “maxNrofCSI-SubConfigPerReportConfig-r18”, for example, and the maximum value of ID can be defined by the IE “maxNrofCSI-SubConfig”. The maximum number of sub-configurations and the maximum value of ID can also be different values.

[0081] Action 1-1-3) The new IE can be a global ID identifying one CSI reporting sub-configuration or one CSI reporting configuration. That is, the global ID identifies both sub-configuration and reporting configuration. Each CSI reporting sub-configuration within a CSI reporting configuration can be assigned an ID by the new IE. Each CSI reporting configuration not containing CSI sub-configuration can be assigned an ID by the new IE. Each CSI reporting configuration containing more than one CSI sub-configuration can or can not be assigned an ID by the new IE.

[0082] The value of the global ID per sub-configuration or per CSI reporting configuration can be different. The maximum value of the global ID can be defined by an IE or a fixed value. For example, the maximum value of the global ID can be 48, or 56, 64, 80, or other values.

[0083] In the case where one CSI reporting configuration is assigned an ID by the new IE, or in the case where one or more sub-configurations within one CSI reporting configuration are assigned an ID by one or more new IEs, the legacy ID (i.e., CSI-ReportConfigId) can be ignored or can be used.

[0084] Figure 7 Figure 1 is a diagram showing an example (1) of RRC specification change for an embodiment of the present application. As shown, the local ID per sub-configuration can be defined by the IE “CSI-ReportSubConfigId-r18”, for example. Figure 7

[0085] Action 1-2) The legacy IE can be reused. Each CSI reporting sub-configuration can also be assigned a global ID by the legacy IE (i.e., CSI-ReportConfigId). The maximum number of reporting configurations can remain unchanged at 48, or can be extended to a large value, such as 56, 64, 80, or other values.

[0086] Figure 8 Figure 2 is a diagram showing an example (2) of RRC specification change for an embodiment of the present application. As shown, the local ID per sub-configuration can be defined by the IE “CSI-ReportSubConfigId-r18”, for example. Figure 8 ​As shown, a legacy ID "CSI-ReportConfigld" can be allocated per sub- setting. The maximum number of reporting settings can also be extended.

[0087] Hereinafter, the operation 2) SP-CSI reporting in PUCCH is described.

[0088] A legacy MAC-CE uses a 1-bit field to inform activation or deactivation of each SP-CSI reporting. For network energy saving, to activate or deactivate sub- settings of each SP-CSI reporting, the notification based on MAC-CE needs to be enhanced.

[0089] Based on base station configuration and / or UE capability, the maximum of 1) -6) shown below or the maximum of the sum of several of 1) -6) shown below can be limited by a fixed value or a configured value.

[0090] 1) The number of reporting settings of SP-CSI in PUCCH that are configured and / or activated

[0091] 2) The number of reporting settings of SP-CSI in PUCCH that are configured with sub- settings and / or activated

[0092] 3) The number of reporting settings of SP-CSI in PUCCH that are configured without sub- settings and / or activated

[0093] 4) The number of reporting settings of SP-CSI in PUCCH that are configured with more than a predetermined number (e.g. 0 or 1) of sub- settings and / or activated

[0094] 5) The number of reporting settings of SP-CSI in PUCCH that are configured without sub- settings or with less than a predetermined number (e.g. 1 or 2) of sub- settings and / or activated

[0095] 6) The number of sub- settings of SP-CSI in PUCCH that are configured and / or activated

[0096] Operation 2-0) As the notification principle of activation or deactivation of SP-CSI reporting settings, all sub- settings contained in one reporting setting can be activated or deactivated at the same time. The notification of activation or deactivation by a legacy MAC-CE for SP-CSI in PUCCH can also be reused. In the case where one reporting setting is activated or deactivated, and the reporting setting does not contain sub- settings, the CSI reporting can be activated or deactivated. Or, in the case where the reporting setting contains one or more sub- settings, all sub- settings can also be activated or deactivated.

[0097] Action 2-1) As a notification principle of activation or deactivation of SP-CSI reporting setting, it is possible to notify whether each sub-setting is activated or deactivated using an additional field included in a MAC-CE. Hereinafter, the additional field and the additional bit field can be replaced.

[0098] As shown below, the MAC-CE can notify which of each sub-setting within one reporting setting is activated or deactivated.

[0099] (a-1) Field of bitmap. 1 bit corresponds to one sub-setting within the reporting setting.

[0100] (a-2) Field of joint coding.

[0101] It can be decided as shown below whether the additional field for each reporting setting in the MAC-CE is present or not.

[0102] (b-1) Always present.

[0103] (b-2) Present only in the case where the corresponding reporting setting is present.

[0104] (b-3) Present only in the case where sub-settings are set and the number of sub-settings is greater than a predetermined value (for example, 0 or 1).

[0105] (b-4) Present only in the case where both the above b-2 and the above b-3 are satisfied.

[0106] The bit length of the additional field for each reporting setting can be set as shown below.

[0107] (c-1) Fixed bit length. For example, the fixed bit length can be decided based on the maximum number of sub-settings per CSI reporting setting.

[0108] (c-2) The bit length can be decided based on the actual number of sub-settings of the corresponding CSI reporting setting.

[0109] Action 2-2) For activation or deactivation of reporting settings, joint coding can be performed for the case where there is no sub-setting and the case where there is a sub-setting. One field can correspond to each SP-CSI reporting setting. As shown below, the bit length of the additional field for each reporting setting and sub-setting can be set.

[0110] (d-1) Fixed bit length. For example, the fixed bit length can be decided based on the maximum number of sub-settings per CSI reporting setting.

[0111] (d-2) The bit length can be decided based on the actual number of sub-settings of the corresponding CSI reporting setting.

[0112] Action 2-3) can be performed based on the global ID of the SP-CSI report configuration without sub-configuration and the sub-configuration allocation in Action 1-1-2) or Action 1-2) above, to activate or deactivate.

[0113] (e-1) One 1-bit field can be configured for each SP-CSI report configuration without sub-configuration or each sub-configuration.

[0114] In addition, in order to activate or deactivate the sub-configuration of the SP-CSI report configuration in the PUCCH, a new value can also be defined in the LC ID (refer to Non-Patent Literature 4).

[0115] In addition, in order to notify the bit length of the MAC-CE, a new bit field can be defined, or the conventional reserved bit in the MAC-CE can be reused. Figure 9 is a figure showing an example (1) of the MAC-CE of the embodiment of the present application. This MAC-CE is an example of the MAC-CE that activates or deactivates the SP-CSI report in the PUCCH. For example, as shown in Figure 9 the highest reserved bit of Oct1 can be the conventional reserved bit.

[0116] For the activated sub-configuration within one report configuration, the base station 10 can notify the terminal 20 whether the CSI corresponding to the activated sub-configuration is separate CSI or one joint CSI. The joint CSI can or can not reduce the overhead. As an example of the overhead reduction, the CSI value after being differentially or jointly encoded can be the same amount in multiple CSIs.

[0117] For this notification, a bit field can be defined in the MAC-CE. For example, it can be a 1-bit field, and the value 0 indicates separate CSI, and the value 1 indicates one joint CSI after the overhead reduction. For example, it can also be a 2-bit field, and the value 0 indicates separate CSI, the value 1 indicates one joint CSI of the common CSI, the value 2 indicates one joint CSI of the differential CSI, and the value 3 indicates one joint CSI that is jointly encoded.

[0118] For this notification, a new IE in the RRC signaling can be defined, or the existing IE can be reused. For example, a new IE can be defined in the report configuration. The new IE can be CSI-ReportConfig or report sub-configuration, or CSI-ReportSubConfig (refer to Action 1) above). In addition, a new report quantity type can be defined for reportQuantity.

[0119] Figure 10is a diagram showing an example (2) of the MAC-CE of the embodiment of the present application. Figure 11 is a diagram showing an example (3) of the MAC-CE of the embodiment of the present application. Figure 10 and Figure 11 is set to

[0120] (a-1) Field of the bitmap

[0121] (b-1) Always present

[0122] (c-1) Example of fixed bit length (2 bits, i.e., maximum number of sub- configurations set per report is set to 2).

[0123] As Figure 10 indicated, S0-S3 can be legacy configurations, and an additional bit field can be configured at the end.

[0124] As Figure 11 indicated, the additional bit field can also be configured adjacent to S0-S3.

[0125] S0 corresponds to a PUCCH resource containing SP-CSI report in the notified BWP, and contains a report configuration set with the smallest CSI-ReportConfigID in the list set to semiPersistentOnPUCCH or the smallest ID defined by Action 1). The same also applies to S1 and onwards.

[0126] T 0，0 , T 0，1 corresponds to an indication of two settable sub- configurations within the report configuration set corresponding to S0. The same also applies to S1 and onwards.

[0127] T 0，0 , T 0，1 is the order of the sub- configuration IDs defined in Action 1) within the corresponding report configuration set. For example, T 0，0 corresponds to the smallest sub- configuration ID within the report configuration set corresponding to S0.

[0128] Figure 10 The bit field F in S0-S3 and Figure 11 may be defined as follows.

[0129] Alt.1) A field notifying the bit length of the MAC-CE field. For example, values 0 / 1 can notify the bit length of the MAC-CE field 16 bits / 24 bits.

[0130] Alt.2) It can be notified whether the CSI corresponding to the activated sub- configuration within the report configuration set is reported through separate CSI reports or through one joint CSI (with / without overhead reduction) report.

[0131] In S i If a report setting is set to 0 and has no sub-settings within the corresponding report settings, the report setting can be deactivated. In S i If a setting is 0 and there are sub-settings within the corresponding report settings, all sub-settings can be deactivated.

[0132] In S i The report setting can be activated if it is set to 1 and there are no sub-settings within the corresponding report settings. In S i If it is set to 1 and there is a sub-setting within the corresponding report settings, and in T i，j If a sub-setting is set to 1 and a corresponding sub-setting exists, that sub-setting can be activated. In S i If it is set to 1 and there is a sub-setting within the corresponding report settings, and in T i，j If a sub-setting is set to 0 and a corresponding sub-setting exists, the sub-setting can be deactivated.

[0133] Figure 12 This is a diagram illustrating example (4) of the MAC-CE according to an embodiment of the present invention. Figure 13 This is a diagram illustrating example (5) of the MAC-CE according to an embodiment of the present invention. Figure 14 This is a diagram illustrating example (6) of the MAC-CE according to an embodiment of the present invention.

[0134] Figure 12 , Figure 13 and Figure 14 In the above action 2-1), it is set as

[0135] (a-1) Fields of the bitmap

[0136] (b-4) exists only if both of the above-mentioned b-2 and b-3 are satisfied.

[0137] (c-2) An example of determining the bit length based on the actual number of sub-settings in the corresponding CSI report.

[0138] like Figure 12 As shown, the append bit field for sub-configuration can be centrally configured in S. i after. Figure 13 Is Figure 12 S i The graph has values ​​set. For example... Figure 13 As shown, there are no appended fields corresponding to S0 and S1. The appended fields corresponding to S2 are T0 and T1, and the appended fields corresponding to S3 are T2 and T3. Figure 14 As shown, the append bit field for the sub-configuration can be associated with the corresponding S. i Adjacent locations are configured.

[0139] S0 corresponds to the PUCCH resource in the BWP containing the SP-CSI report, and contains the smallest CSI-ReportConfigID or the smallest ID defined by action 1) in the list of types set to semiPersistentOnPUCCH. S1 and thereafter are the same.

[0140] Figure 12 and Figure 14 The bit field F in the array can be defined as follows.

[0141] Alt.1) This field indicates the bit length of the MAC-CE field. For example, a value of 0 / 1 can indicate that the MAC-CE field is 16 bits / 24 bits long.

[0142] Alt.2) can notify whether the CSI corresponding to the activated sub-setting within the reporting settings is reported separately or through a combined CSI (with / without overhead reduction) report.

[0143] In S i If a report setting is set to 0 and has no sub-settings within the corresponding report settings, the report setting can be deactivated. In S i If a setting is 0 and a sub-setting exists within the corresponding report setting, all sub-settings can be deactivated. In S i When set to 0, there may be no additional fields for child-oriented settings.

[0144] In S i The report setting can be activated if it is set to 1 and there are no sub-settings within the corresponding report settings. In S i If a sub-setting is set to 1 and the corresponding report setting contains N sub-settings (N=1), the sub-setting may be activated or may not have any additional fields.

[0145] When there are N (N>1) sub-settings in the corresponding report setting, the append field can be N bits, and the bit index k can be k = {j, j+1, ..., J+N-1}. The j-th bit can correspond to the first sub-setting in the report setting according to the order of the sub-setting IDs defined by action 1). The same applies to the bits after the j-th bit. k = {0, 1, ..., j-1} are the bits that have been assigned to the append field of the immediately preceding sub-setting of the report setting.

[0146] Furthermore, if there are N (N>1) sub-settings in the corresponding report settings, the appended field can be N bits, or it can be configured in the corresponding S. iAfter that, the start bit of the added field can correspond to the first subsetting according to the order of the subsetting ID within the corresponding reporting setting.

[0147] T k may be set to 1, it is notified that the corresponding subsetting is activated. T k may be set to 0, it is notified that the corresponding subsetting is deactivated.

[0148] Figure 15 is a diagram showing an example (7) of the MAC-CE of the embodiment of the present application. Figure 15 is set in Action 2-2)

[0149] (d-1) Fixed bit length. For example, the fixed bit length can be determined based on the maximum number of subsetting per CSI reporting setting. In the example of Figure 15 S i is 2 bits.

[0150] S0 corresponds to the reporting setting containing the PUCCH resource facing the SP-CSI report in the notified BWP and containing the smallest CSI-ReportConfigID within the list whose type is set to semiPersistentOnPUCCH or the smallest ID defined by Action 1). The same also applies to S1 and after.

[0151] Figure 12 and Figure 14 The bit field F in

[0152] Alt.1) Field notifying the bit length of the MAC-CE field. For example, the value 0 / 1 can notify the bit length of the MAC-CE field 16 bits / 24 bits.

[0153] Alt.2) It can be notified whether the CSI corresponding to the activated subsetting within the reporting setting is reported by separate CSI or by one joint CSI (with / without overhead reduction).

[0154] The bit size of S i is fixed and can be set based on the maximum number of subsetting per reporting setting. In the case where the number of subsetting per reporting setting is 2, the bit size of S i may be 2 bits. Table 1 shows the definition of the action of activation or deactivation based on the value of S i with a bit size of 2 bits.

[0155] [Table 1]

[0156]

[0157] As shown in Table 1, the value of S i specifies the activated subsetting. In particular, when S i is 1 and there is no subsetting, the corresponding reporting setting is activated.

[0158] The subsetting of the reporting setting is ordered by the subsetting ID defined in Action 1).

[0159] In the case where the number of subsetting of each reporting setting is 3, the bit size of S i may be 3. Table 2 shows the definition of the action of activation or deactivation based on the value of S i with the bit size of 3.

[0160] [Table 2]

[0161]

[0162] As shown in Table 2, the value of S i specifies the activated subsetting. In particular, when S i is 1 and there is no subsetting, the corresponding reporting setting is activated.

[0163] Figure 16 is a figure showing an example of activation or deactivation of subsetting of an embodiment of the present application. Figure 16 is set to 1 in Action 2-3).

[0164] (e-1) can be an example of the case where one 1-bit field is set for each SP-CSI reporting setting in the case where there is no subsetting or for each subsetting.

[0165] T0may correspond to the reporting setting, or the subsetting corresponding to the smallest subsetting ID defined in Action 1-1-2) or Action 1-2) in which the type is set to semiPersistentOnPUCCH within the list.

[0166] Figure 16 The bit field F in S

[0167] Alt.1) a field that notifies the bit length of the MAC-CE field. For example, the values 0 / 1 can notify the bit length of the MAC-CE field 16 bits / 24 bits.

[0168] Alt.2) can notify whether the CSI corresponding to the activated subsetting within the reporting setting is reported by separate CSI or by one joint CSI (with / without overhead reduction).

[0169] It is also possible to notify the number of activated subsetting within the reporting setting by the field T iSet to 1 to inform that the corresponding reporting setting or sub-setting is activated. It can also be informed by setting the field T i Set to 0 to inform that the corresponding reporting setting or sub-setting is deactivated.

[0170] The following describes Action 3) SP-CSI reporting in PUSCH.

[0171] Based on the base station setting and / or UE capability, the maximum of 1) - 6) shown below or the maximum of the sum of several of 1) - 6) shown below can be limited by a fixed value or a set value.

[0172] 1) The number of reporting settings of SP-CSI in PUSCH that are set and / or activated

[0173] 2) The number of reporting settings of SP-CSI in PUSCH that are set with sub-settings and / or activated

[0174] 3) The number of reporting settings of SP-CSI in PUSCH that are set without sub-settings and / or activated

[0175] 4) The number of reporting settings of SP-CSI in PUSCH that are set with more than a predetermined number (e.g. 0 or 1) of sub-settings and / or activated

[0176] 5) The number of reporting settings of SP-CSI in PUSCH that are set without sub-settings or with less than a predetermined number (e.g. 1 or 2) of sub-settings and / or activated

[0177] 6) The number of sub-settings of SP-CSI in PUCCH that are set and / or activated

[0178] Action 3-1) All sub-settings contained in one reporting setting can be activated or deactivated at the same time. SP-CSI in PUSCH can be triggered by conventional DCI. In the case that one trigger state is activated and the reporting setting does not contain sub-settings, the CSI reporting can be activated or deactivated. Or, in the case that the reporting setting contains one or more sub-settings, all sub-settings can be activated or deactivated.

[0179] Action 3-2) DCI can trigger sub-settings within the reporting setting.

[0180] Sub-sets can also be triggered as follows.

[0181] (a-1) A bitmap can also be used. One bit corresponds to one subsetting within the report setting. The bit length can be equal to the maximum number of subsettings per CSI report setting. For example, in the case where the maximum number of subsettings per CSI report setting is 2, it can be 2 bits long.

[0182] (a-2) A table of codepoints mapped with one or more subsettings can also be used. The bit length can be set based on the maximum number of subsettings per CSI report setting, or can be smaller than the maximum number.

[0183] The bits for triggering subsettings can be included in any one of the CSI request field, other fields, or a new field. The number of bits for triggering subsettings within the DCI can be set to 0 to 2, 0 to 3, or 0 to 4 by RRC signaling.

[0184] For example, it can be set in the manner of

[0185] reportTriggerSubSizeDCI-0-2-r18 INTEGER(0..2) / INTEGER(0..3) / INTEGER(0..4)

[0186] reportTriggerSubSize-r18 INTEGER(0..2) / INTEGER(0..3) / INTEGER(0..4) can be set.

[0187] The maximum number of triggers for SP-CSI reporting in PUSCH can be reduced. For example, in the case where the maximum number of subsettings per CSI report setting is 2, or in the case where 2 bits are used for triggering of subsettings, the maximum number of triggers for SP-CSI reporting in PUSCH can be reduced from 64 to 16. That is, a maximum of 4 bits can be used for notification of the trigger state of SP-CSI reporting.

[0188] Figure 17 is a diagram showing example (1) of triggering of subsettings according to an embodiment of the present application. Figure 17 is set to

[0189] (a-1) 2 bits of bitmap, or

[0190] (a-2) 2 bits of table of codepoints.

[0191] As Figure 17As shown, a CSI-SemiPersistentOnPUSCH-TriggerState to be activated is specified in a field of an activation trigger state included in the CSI request of the DCI, and a Sub-configuration to be activated is specified in a field of an activation sub-configuration.

[0192] The field of the activation trigger state is n bits at the beginning of the CSI request field, and n can be, for example, n = {0, 1, 2, 3, 4}. This field activates one of the SP-CSI activation trigger states in the PUSCH.

[0193] The field of the activation sub-configuration is m bits at the end of the CSI request field, and m can be, for example, m = {0, 1, 2, 3, 4}. In the case where the sub-configuration is set or more than one sub-configuration is set, this field activates one or more sub-configurations corresponding to the activated trigger state. Figure 17 This is an example where m = 2.

[0194] The sub-configurations within one SP-CSI reporting configuration can be ordered, for example, based on the sub-configuration IDs defined in Action 1). The i-th sub-configuration can be the sub-configuration with the i-th smallest sub-configuration ID.

[0195] In the case where there is no sub-configuration in the corresponding reporting configuration in the trigger state activated by the field of the activation trigger state, SP-CSI corresponding to the trigger state can be triggered. The terminal 20 can also ignore the field of the activation sub-configuration.

[0196] In the case where there is one sub-configuration in the corresponding reporting configuration in the trigger state activated by the field of the activation trigger state, SP-CSI corresponding to the sub-configuration can be triggered. The terminal 20 can also ignore the field of the activation sub-configuration.

[0197] In the case where there are a plurality of sub-configurations in the corresponding reporting configuration in the trigger state activated by the field of the activation trigger state, the terminal 20 refers to the field of the activation sub-configuration,

[0198] (a-1) In the case where the i-th sub-configuration is activated, the i-th bit of T i may be triggered. In the case where the number of sub-configurations is smaller than i, the terminal 20 can also ignore the bits of T i .

[0199] Alternatively,

[0200] (a-2) The terminal 20 can also trigger the sub-configurations based on the table of (a-2) shown below. Figure 17

[0201] ​Table 3 is an example of a table in the case where the maximum number of sub- configurations of each CSI report setting is set to 3.

[0202] [Table 3]

[0203] Activate / deactivate 0 1st sub-setting triggered 1 2nd sub-setting triggered 2 3rd sub-setting triggered 3 1st and 2nd sub-setting triggered 4 1st and 3rd sub-setting triggered 5 2nd and 3rd sub-setting triggered 6 1st, 2nd and 3rd sub-setting triggered 7 Reserved

[0204] Action 3-3) The RRC signaling can inform which sub-configuration of the activated report setting the CSI is reported. A new IE to trigger the sub-configuration within the CSI-SemiPersistentOnPUSCH-TriggerState can be defined. This IE can also inform which sub-configuration is triggered. The corresponding UE action can refer to the example of Action 3-2).

[0205] Action 3-4) For the activated sub-configuration within one report setting, the base station 10 can also inform the terminal 20 whether the CSI corresponding to the activated sub-configuration is separate CSI or one joint CSI. The joint CSI can or can not reduce the overhead. As an example of overhead reduction, the CSI value after differential or joint encoding can be the same amount in multiple CSIs.

[0206] For this notification, the base station 10 can also use the bit field of the DCI. For example, it can be a 1-bit field, and the value 0 indicates separate CSI, and the value 1 indicates one joint CSI after overhead reduction. For example, it can also be a 2-bit field, and the value 0 indicates separate CSI, the value 1 indicates one joint CSI of common CSI, the value 2 indicates one joint CSI of differential CSI, and the value 3 indicates one joint CSI after joint encoding.

[0207] In addition, for this notification, the base station 10 can define a new IE in the RRC signaling, or can reuse the existing IE.

[0208] For example, a new report quantity type can be defined for reportQuantity. In addition, for example, a new IE can be defined in CSI-ReportConfig, CSI-ReportSubConfig (defined in Action 1), or CSI-SemiPersistentOnPUSCH-TriggerState.

[0209] Figure 18 Fig. 5 is a diagram showing an example (5) of RRC specification changes of the embodiment of the present application. Figure 18is an example of the new IE sp-CSI-SubcfgJointReport-R18 included in CSI-SemiPersistentOnPUSCH-TriggerState. In the case where sp-CSI-SubcfgJointReport-R18 is set, one joint CSI with reduced overhead can be reported. In the case where sp-CSI-SubcfgJointReport-R18 is not set, separate CSIs can be reported.

[0210] Figure 19 is a figure showing example (6) of RRC specification changes of the embodiment of the present application. Figure 19 An example of Action 3-3) is shown. The triggered sub-configuration can be specified by the maximum number of sp-CSI-Trigger-r18, maxNrofCSI-SubConfigPerReportConfig-r18.

[0211] Figure 20 is a figure showing example (7) of RRC specification changes of the embodiment of the present application. Figure 20 An example of Action 3-3) is shown. The triggered sub-configuration can also be specified by sp-CSI-SubcfgTrigger-r18. The triggered sub-configuration can also be based on Figure 20 the table shown in FIG. 9, the first sub-configuration is triggered in the case of value n1, the second sub-configuration is triggered in the case of value n2, and the first and second sub-configurations are triggered in the case of value n3.

[0212] Figure 21 is a figure showing example (2) of triggering of sub-configuration of the embodiment of the present application. Figure 21 is an example of Action 3-3).

[0213] In Action 3-3), the field of the activated trigger state can be the same as the conventional CSI request. The sub-configurations in one SP-CSI report configuration are ordered by the sub-configuration ID defined in Action 1). The i-th sub-configuration can also be the sub-configuration of the i-th smallest sub-configuration ID. Figure 21 In the trigger state activated by the field of the activated trigger state, in the case where there is no sub-configuration in the corresponding report configuration, the SP-CSI corresponding to the trigger state can be triggered. The terminal 20 can ignore the sp-CSI-SubcfgTrigger-r18 included in the activated CSI-SemiPersistentOnPUSCH-TriggerState.

[0214]

[0215] ​In the triggered state activated by the field of the activated trigger state, in the case where there is one sub-configuration in the corresponding report configuration, SP-CSI corresponding to the sub-configuration can be triggered. The terminal 20 can ignore sp-CSI-SubcfgTrigger-r18 included in the activated CSI-SemiPersistentOnPUSCH-TriggerState.

[0216] In the triggered state activated by the field of the activated trigger state, in the case where there are a plurality of sub-configurations in the corresponding report configuration, the terminal 20 refers to sp-CSI-SubcfgTrigger-r18 included in the activated CSI-SemiPersistentOnPUSCH-TriggerState,

[0217] (a-1) In the case where the i-th sp-CSI-SubcfgTrigger-r18 is triggered, the i-th sub-configuration can be triggered. When the number of sub-configurations is less than i, the terminal 20 can ignore the i-th activated sp-CSI-SubcfgTrigger-r18.

[0218] Alternatively,

[0219] (a-2) The terminal 20 can also trigger the sub-configuration based on the table of code points.

[0220] In the case where there are a plurality of sub-configurations in the corresponding report configuration and sp-CSI-SubcfgTrigger-r18 is not included in the activated CSI-SemiPersistentOnPUSCH-TriggerState, the terminal 20 can trigger all the sub-configurations, can trigger only the 1st sub-configuration, or can not trigger the sub-configuration.

[0221] Hereinafter, Action 4) Aperiodic CSI reporting in PUSCH will be described.

[0222] Action 4-1) All the sub-configurations in one report configuration can be triggered at the same time. For A-CSI in PUSCH, the method based on the conventional MAC-CE and the conventional DCI can be reused.

[0223] In the case where one of CSI-AssociatedReportConfigInfo is triggered and in the case where no sub-configuration is included in the report configuration, the CSI report can be triggered. Alternatively, in the case where one of CSI-AssociatedReportConfigInfo is triggered and in the case where one or more sub-configurations are included in the report configuration, all the sub-configurations can be triggered.

[0224] Action 4-2) RRC signaling can inform which CSI of which subsetting of the activated reporting setting is reported.

[0225] Action 4-2-1) To trigger subsetting, a new IE included in CSI-AssociatedReportConfiglnfo can be defined. The IE informs which subsetting is triggered.

[0226] (a-1) Bitmap or IE map can be used for triggering of subsetting. One bit or new IE can correspond to one subsetting. The length of the bit or the number of the IE can be equal to the maximum number of subsetting per CSI reporting setting.

[0227] (a-2) Table of codepoint can be used for triggering of subsetting.

[0228] Action 4-2-2) To trigger subsetting, a new IE included in CSI-AperiodicTriggerState can be defined. The IE informs which subsetting is triggered.

[0229] The setting of triggering subsetting can be applied to all reporting settings or all AssociatedReportConfiglnfo included in one CSI-AperiodicTriggerState. (a-1) Bitmap, (a-2) table of codepoint can be used for triggering of subsetting. The UE action is the same as Action 4-2-1).

[0230] Action 4-3) DCI can also inform which CSI of which subsetting of the activated reporting setting is reported. The bit of triggering subsetting can be included in CSI request field, or other field, or new field. The setting of triggering subsetting can be applied to all reporting settings or all AssociatedReportConfiglnfo included in one CSI-AperiodicTriggerState. The UE action is the same as Action 4-2-2).

[0231] Action 4-4) For the activated subsetting within one reporting setting, the base station 10 can also inform the terminal 20 whether the CSI corresponding to the activated subsetting is separate CSI or one joint CSI. The joint CSI can or can not reduce overhead. As an example of overhead reduction, the CSI value after differential or joint encoding can be the same amount in multiple CSIs.

[0232] For the notification, a bit field can be defined in DCI. For example, it can be 1 bit field, value 0 indicates separate CSI, value 1 indicates one joint CSI with overhead reduction. For example, it can also be 2 bit field, value 0 indicates separate CSI, value 1 indicates one joint CSI with common CSI, value 2 indicates one joint CSI with differential CSI, value 3 indicates one joint CSI jointly encoded. The notification can apply to all reporting settings or all AssociatedReportConfigInfo contained in one CSI-AperiodicTriggerState.

[0233] For the notification, a new IE in RRC signaling can be defined or an existing IE can be reused. For example, a new IE can be defined in reporting setting. A new report quantity type can also be defined facing reportQuantity. A new IE contained in CSI-ReportConfig, CSI-ReportSubConfig or CSI-AssociatedReportConfigInfo can be defined. The IE can only apply to reporting setting corresponding to CSI-ReportConfig or CSI-AssociatedReportConfigInfo.

[0234] Figure 22 Fig. 8 is a diagram illustrating an example (8) of RRC specification change of the embodiment of the present application. Figure 22 An example of the case where (a-1) is applied in Action 4-2-1) is illustrated. Aperiodic-CSI-SubcfgTrigger-r18 becomes a bitmap of maximum maxNrofCSI-SubConfigPerReportConfig-r18.

[0235] Figure 23 Fig. 9 is a diagram illustrating an example (9) of RRC specification change of the embodiment of the present application. Figure 23 An example of the case where (a-2) is applied in Action 4-2-1) is illustrated. Sub- settings triggered by code points of n1 to n4 specified by Aperiodic-CSI-SubcfgTrigger-r18 are specified.

[0236] Figure 24 Fig. 10 is a diagram illustrating an example (3) of triggering of sub-setting of the embodiment of the present application. Figure 24 An example of the case where (a-2) is applied in Action 4-2-1) is illustrated.

[0237] The legacy MAC-CE and the legacy DCI can be used to trigger one CSI- AperiodicTriggerState. The sub-sets within one A-CSI reporting set can be ordered, for example, based on the sub-set ID defined in Action 1.

[0238] For the triggered CSI-AperiodicTriggerState, the terminal 20 can confirm each CSI-AssociatedReportConfigInfo included in the CSI-AperiodicTriggerState, and act as follows 1) - 3).

[0239] 1) In the case where there is no sub-set in the reporting set of the triggered CSI-AssociatedReportConfigInfo, the A-CSI corresponding to the reporting set can be triggered. The terminal 20 can also ignore the Aperiodic-CSI-SubcfgTrigger-r18.

[0240] 2) In the case where there is one sub-set in the reporting set of the triggered CSI-AssociatedReportConfigInfo, the A-CSI corresponding to the sub-set can be triggered. The terminal 20 can also ignore the Aperiodic-CSI-SubcfgTrigger-r18.

[0241] 3) In the case where there are multiple sub-sets in the reporting set of the triggered CSI-AssociatedReportConfigInfo, the A-CSI corresponding to the sub-set can be triggered. The terminal 20 refers to the Aperiodic-CSI-SubcfgTrigger-r18,

[0242] (a-1) In the case where the i-th Aperiodic-CSI-SubcfgTrigger-r18 is Triggered, the i-th sub-set can be triggered. In the case where the number of sub-sets is less than i, the terminal 20 can ignore the i-th Aperiodic-CSI-SubcfgTrigger-r18.

[0243] Alternatively,

[0244] (a-2) The terminal 20 can also trigger the sub-set based on the table of codepoints.

[0245] In a case where there are multiple sub-sets in the reporting setting of the triggered CSI-AssociatedReportConfigInfo, and in a case where Aperiodic-CSI-SubcfgTrigger-r18 is not included in the triggered CSI-AssociatedReportConfigInfo, the terminal 20 can trigger all the sub-sets, can trigger only the 1st sub-set, or can not trigger the sub-sets.

[0246] Figure 25 Fig. 10 is a diagram illustrating an example (10) of RRC specification change according to the embodiment of the present application. Figure 25 An example in which (a-1) is applied in Action 4-2-2) is illustrated. Aperiodic-CSI-SubcfgTrigger-r18 becomes a bitmap of the maximum maxNr ofCSI-SubConfigPerReportConfig-r18.

[0247] Figure 26 Fig. 11 is a diagram illustrating an example (11) of RRC specification change according to the embodiment of the present application. Figure 26 An example in which (a-2) is applied in Action 4-2-2) is illustrated. Sub-sets triggered by the code points of n1 to n4 specified by Aperiodic-CSI-SubcfgTrigger-r18 are specified.

[0248] Figure 27 Fig. 12 is a diagram illustrating an example (4) of triggering of sub-sets according to the embodiment of the present application. Figure 27 An example in which (a-2) is applied in Action 4-2-2) is illustrated. As shown in Figure 27 One CSI-AperiodicTriggerState is triggered by MAC-CE and DCI. By setting n3 in Aperiodic-CSI-SubcfgTrigger-r18, the 1st and 2nd sub-sets in all CSI-ReportConfig or CSI-AssociatedReportConfigInfo are triggered.

[0249] Figure 28 Fig. 13 is a diagram illustrating an example (5) of triggering of sub-sets according to the embodiment of the present application. Figure 28 An example in which (a-2) is applied in Action 4-3) is illustrated. As shown in Figure 28As shown, a CSI-AperiodicTriggerState is triggered in the trigger state field included in the CSI request. Setting n3 in the activating sub-setting field triggers the first and second sub-settings in all CSI-ReportConfig or CSI-AssociatedReportConfigInfo.

[0250] Through the above embodiments, terminal 20 can perform actions associated with the activation and triggering of sub-settings included in the CSI report settings involved in measurement and reporting, and perform CSI reporting to base station 10.

[0251] That is, in wireless communication systems, it is possible to enhance the process associated with CSI (channel state information) involved in measurement and reporting.

[0252] (Device Structure)

[0253] Next, an example of the functional structure of the base station 10 and terminal 20 performing the processes and actions described above will be explained. The base station 10 and terminal 20 include the functions implemented in the above embodiments. However, the base station 10 and terminal 20 may each have only a portion of the functions described in the embodiments.

[0254] <Base Station 10>

[0255] Figure 29 This is a diagram illustrating an example of the functional structure of a base station 10 according to an embodiment of the present invention. (See diagram for example.) Figure 29 As shown, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130 and a control unit 140. Figure 29 The functional structure shown is only one example. As long as the actions involved in the embodiments of the present invention can be performed, the functional distinctions and names of the functional parts can be arbitrary.

[0256] The transmitting unit 110 includes the function of generating a signal to be transmitted to the terminal 20 and wirelessly transmitting the signal. Furthermore, the transmitting unit 110 transmits inter-network node messages to other network nodes. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 and obtaining, for example, higher-level information from the received signals. Furthermore, the transmitting unit 110 has the function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc., to the terminal 20. Furthermore, the receiving unit 120 receives inter-network node messages from other network nodes.

[0257] The setting unit 130 stores preset setting information and various setting information sent to the terminal 20. The content of the setting information includes, for example, information related to CSI measurement and reporting.

[0258] The control section 140 performs control to realize the functions explained in the embodiments. Further, as explained in the embodiments, the control section 140 performs control relating to CSI measurement and reporting. The function section relating to signal transmission in the control section 140 can also be included in the transmission section 110, and the function section relating to signal reception in the control section 140 can also be included in the reception section 120.

[0259] <terminal 20>

[0260] Figure 30 is a diagram showing an example of the functional structure of the terminal 20 in the embodiment of the present application. As shown in Figure 30 , the terminal 20 has a transmission section 210, a reception section 220, a setting section 230, and a control section 240. Figure 30 The functional structure shown in the drawing is merely an example. The functional division and the names of the function sections can be arbitrary as long as the actions involved in the embodiment of the present application can be performed.

[0261] The transmission section 210 generates a transmission signal from transmission data and transmits the transmission signal in a wireless manner. The reception section 220 receives various signals in a wireless manner and acquires higher layer signals from the received physical layer signals. Further, the reception section 220 has a function of receiving an NR-PSS, an NR-SSS, an NR-PBCH, a DL / UL / SL control signal, and the like transmitted from the base station 10. Also, for example, as D2D communication, the transmission section 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to other terminals 20, and the reception section 220 receives a PSCCH, a PSSCH, a PSDCH, or a PSBCH, and the like from other terminals 20.

[0262] The setting section 230 stores various setting information received by the reception section 220 from the base station 10. Further, the setting section 230 also stores setting information set in advance. The content of the setting information is, for example, information relating to CSI measurement and reporting, and the like.

[0263] The control section 240 performs control to realize the functions explained in the embodiments. Further, as explained in the embodiments, the control section 240 performs control relating to CSI measurement and reporting. The function section in the control section 240 relating to signal transmission can also be included in the transmitting section 210, and the function section in the control section 240 relating to signal reception can also be included in the receiving section 220.

[0264] (Hardware structure)

[0265] The block diagrams used in the explanation of the above-described embodiments Figure 29 and Figure 30 illustrate blocks in units of functions. These function blocks (structural sections) are realized by any combination of at least one of hardware and software. Further, the method of realizing each function block is not particularly limited. That is, each function block can be realized using one device that is physically or logically combined, or can be realized using a plurality of devices that are physically or logically separated and connected directly or indirectly (for example, using wires, wireless, or the like). The function block can also be realized in combination with software in the above-described one device or the above-described plurality of devices.

[0266] The functions include judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like, but are not limited to these. For example, a function block (structural section) that causes transmission to function is referred to as a transmitting unit or a transmitter. In any case, as described above, the method of realization is not particularly limited.

[0267] For example, the base station 10, the terminal 20, and the like in one embodiment of the present disclosure can also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 31 is a diagram illustrating an example of the hardware structure of the base station 10 and the terminal 20 according to one embodiment of the present disclosure. The above-described base station 10 and terminal 20 can also be configured as a computer device that physically includes a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0268] In addition, in the following description, the expression "device" can be replaced with "circuitry", "apparatus", "unit", or the like. The hardware structure of the base station 10 and the terminal 20 can be configured to include one or more of the illustrated devices, or can be configured not to include a part of the devices.

[0269] Each function in the base station 10 and the terminal 20 is realized by reading predetermined software (program) into the hardware such as the processor 1001, the storage 1002, and causing the processor 1001 to perform arithmetic operation, and controlling at least one of communication of the communication device 1004 or readout and write of data in the storage 1002 and the auxiliary storage 1003.

[0270] The processor 1001 controls the entire computer by causing an operating system to operate, for example. The processor 1001 can also be configured by a central processing device (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like. The above-described control section 140, the control section 240, and the like can also be realized by the processor 1001, for example.

[0271] Further, the processor 1001 reads a program (program code), a software module, or data, and the like from at least one of the auxiliary storage 1003 and the communication device 1004 to the storage 1002, and performs various processing based on the same. As the program, a program that causes a computer to perform at least a part of the operations described in the above-described embodiments is used. For example, Figure 29 The control section 140 of the illustrated base station 10 can also be realized by a control program stored in the storage 1002 and operating in the processor 1001. Also, for example, Figure 30 The control section 240 of the illustrated terminal 20 can also be realized by a control program stored in the storage 1002 and operating in the processor 1001. Although the above-described various processing is described as being performed by one processor 1001, the above-described various processing can also be performed by two or more processors 1001 simultaneously or sequentially. The processor 1001 can also be realized by one or more chips. In addition, the program can be transmitted from a network via a telecommunication line.

[0272] The storage 1002 is a computer-readable recording medium, and can be constituted by at least one of, for example, a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), or the like. The storage 1002 can also be referred to as a register, a cache, a main memory (main storage), or the like. The storage 1002 is capable of holding a program (program code), a software module, or the like that can be executed in order to implement the communication method according to an embodiment of the present disclosure.

[0273] The auxiliary storage 1003 is a computer-readable recording medium, and can be constituted by at least one of, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk, a smart card, a flash memory (for example, a card, a stick, a Key drive), a Floppy (registered trademark) disk, a magnetic stripe, or the like. The above-described storage medium can be, for example, a database, a server, and another appropriate medium that includes at least one of the storage 1002 and the auxiliary storage 1003.

[0274] The communication device 1004 is hardware (a transceiver device) for performing communication between computers via at least one of a wired network and a wireless network, and can also be referred to as a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 can also be constituted to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, or the like, in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transceiving antenna, an amplification section, a transceiving section, a transmission path interface, or the like can also be implemented by the communication device 1004. The transceiving section can also be implemented physically or logically by a transmission section and a reception section.

[0275] The input device 1005 is an input device (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 device (for example, a display, a speaker, an LED lamp, or the like) that implements an output to the outside. In addition, the input device 1005 and the output device 1006 can also be integrally constituted (for example, a touch panel).

[0276] Furthermore, the processor 1001 and storage device 1002, among other devices, are connected via a bus 1007 for communicating information. The bus 1007 can be configured as a single bus or as different buses used between devices.

[0277] Furthermore, the base station 10 and the terminal 20 can be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or a FPGA (Field Programmable Gate Array), and can also use this hardware to implement part or all of the functional blocks. For example, the processor 1001 can also be implemented using at least one of these hardware components.

[0278] Figure 32 An example of the structure of vehicle 2001 is shown. For example... Figure 32 As shown, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a gearshift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013. The various forms / implementations described in this disclosure can also be applied to communication devices mounted on the vehicle 2001, for example, to the communication module 2013.

[0279] The drive unit 2002 may be composed, for example, an engine, a motor, or a hybrid power system of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0280] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (I / O port) 2033. Signals from various sensors 2021 to 2029 of the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 can also be referred to as an ECU (Electronic Control Unit).

[0281] As signals from various sensors 2021 to 2029, there are a current signal from a current sensor 2021 that monitors a current of a motor, a rotational speed signal of a front wheel or a rear wheel acquired by a rotational speed sensor 2022, an air pressure signal of the front wheel or the rear wheel acquired by an air pressure sensor 2023, a vehicle speed signal acquired by a vehicle speed sensor 2024, an acceleration signal acquired by an acceleration sensor 2025, a depression amount signal of an accelerator pedal acquired by an accelerator pedal sensor 2029, a depression amount signal of a brake pedal acquired by a brake pedal sensor 2026, an operation signal of a shift lever acquired by a shift lever sensor 2027, a detection signal for detecting an obstacle, a vehicle, a pedestrian, or the like acquired by an object detection sensor 2028, and the like.

[0282] The information service section 2012 is constituted by various devices for providing (outputting) various information such as driving information, traffic information, entertainment information, and one or more ECUs that control these devices, such as a car navigation system, an audio system, a speaker, a television, a radio, and the like. The information service section 2012 provides various multimedia information and multimedia services to an occupant of the vehicle 2001 using information acquired from an external device via the communication module 2013 or the like. The information service section 2012 can include an input device that accepts input from the outside (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, and the like), and can include an output device that implements output to the outside (for example, a display, a speaker, an LED lamp, a touch panel, and the like).

[0283] The driving assistance system section 2030 is constituted by various devices for providing a function of preventing an accident from occurring or reducing a driving load on a driver, such as a millimeter wave radar, a LiDAR (Light Detection and Ranging), a camera, a positioner for positioning (for example, a GNSS or the like), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, or the like), a gyro system (for example, an IMU (Inertial Measurement Unit), an INS (Inertial Navigation System), or the like), an AI (Artificial Intelligence) chip, an AI processor, and one or more ECUs that control these devices. In addition, the driving assistance system section 2030 transmits and receives various information via the communication module 2013, and implements a driving assistance function or an autonomous driving function.

[0284] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data between the drive section 2002, the steering section 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axles 2009, the microprocessor 2031 and the memory (ROM, RAM) 2032 in the electronic control section 2010, and the sensors 2021 to 2029 possessed by the vehicle 2001 via the communication port 2033.

[0285] The communication module 2013 can be controlled by the microprocessor 2031 of the electronic control section 2010, and is a communication device that can communicate with external devices. For example, various information is transmitted and received between the external devices via wireless communication. The communication module 2013 can be located inside or outside the electronic control section 2010. The external devices can be, for example, base stations, mobile stations, and the like.

[0286] The communication module 2013 can also transmit at least one of the signals input to the electronic control section 2010 from the various sensors 2021 to 2028 described above, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service section 2012 to the external devices via wireless communication. The electronic control section 2010, the various sensors 2021 to 2028, the information service section 2012, and the like can also be referred to as input sections that accept input. For example, the PUSCH transmitted by the communication module 2013 can include information based on the above input.

[0287] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, and the like) transmitted from the external devices, and displays it on the information service section 2012 possessed by the vehicle 2001. The information service section 2012 can also be referred to as an output section that outputs information (for example, outputs information to a display, a speaker, and the like based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). In addition, the communication module 2013 stores the various information received from the external devices in the memory 2032 available to the microprocessor 2031. The microprocessor 2031 can also control the drive section 2002, the steering section 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axles 2009, the sensors 2021 to 2029, and the like possessed by the vehicle 2001 based on the information stored in the memory 2032.

[0288] (Summary of Embodiments)

[0289] As explained above, according to the embodiment of the present application, there is provided a terminal having: a reception section that receives a setting related to a CSI report, i.e., a channel state information report, from a base station; a control section that performs measurement of a CSI-RS, i.e., a channel state information reference signal, transmitted from the base station, based on a report setting included in the setting; and a transmission section that transmits a CSI report to the base station via a PUCCH, i.e., a physical uplink control channel, based on a result of the measurement, the control section activating an SP-CSI, i.e., a semi-persistent channel state information, corresponding to a subsetting included in the report setting based on an identifier of the subsetting.

[0290] According to the above-described structure, the terminal 20 is able to perform an action associated with activation and triggering of a subsetting included in a CSI report setting related to measurement and reporting, to the base station 10, to perform a CSI report. That is, in a wireless communication system, a process associated with CSI, i.e., channel state information, related to measurement and reporting, is able to be strengthened.

[0291] Also, the control section can activate all the subsettings included in one report setting at the same time. According to this structure, the terminal 20 is able to perform an action associated with activation and triggering of a subsetting included in a CSI report setting related to measurement and reporting, to the base station 10, to perform a CSI report.

[0292] Also, the control section can activate an SP-CSI corresponding to a subsetting based on a MAC-CE, i.e., a medium access control-control element. According to this structure, the terminal 20 is able to perform an action associated with activation and triggering of a subsetting included in a CSI report setting related to measurement and reporting, to the base station 10, to perform a CSI report.

[0293] Also, the control section can use a field of a bitmap or a field indicating a codepoint in order to determine a subsetting included in one report setting. According to this structure, the terminal 20 is able to perform an action associated with activation and triggering of a subsetting included in a CSI report setting related to measurement and reporting, to the base station 10, to perform a CSI report.

[0294] Also, the control section can activate an SP-CSI corresponding to a subsetting based on an identifier that identifies a subsetting included in all report settings and a report setting, or an identifier that identifies a report setting. According to this structure, the terminal 20 is able to perform an action associated with activation and triggering of a subsetting included in a CSI report setting related to measurement and reporting, to the base station 10, to perform a CSI report.

[0295] Further, according to an embodiment of the present application, there is provided a communication method, by a terminal, of performing the following steps: receiving, from a base station, a setting related to a CSI report, i.e., a channel state information report; performing a measurement of a CSI-RS, i.e., a channel state information reference signal, transmitted from the base station, based on a report setting included in the setting; transmitting, to the base station via a PUCCH, i.e., a physical uplink control channel, a CSI report based on a result of the measurement; and activating an SP-CSI, i.e., a semi-persistent channel state information, corresponding to a sub-setting determined based on an identifier of the sub-setting included in the report setting.

[0296] According to the above-described configuration, the terminal 20 is able to perform an action associated with activation of a sub-setting included in a CSI report setting related to measurement and reporting and triggering, and perform a CSI report to the base station 10. That is, in a wireless communication system, a process associated with CSI, i.e., channel state information, related to measurement and reporting can be enhanced.

[0297] (Supplement to Embodiments)

[0298] The above describes embodiments of the present application, but the disclosed application is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, substitutions, and the like. Specific numerical examples are used for facilitating understanding of the application, but as long as not specifically indicated, these numerical values are only examples, and appropriate arbitrary values can be used. The item divisions in the above description are not essential to the present application, and two or more items described in the description can be used in combination as needed, or an item described in one item can be applied to an item described in another item (as long as not contradictory). The boundaries of functional blocks or processing blocks in the functional block diagram do not necessarily correspond to the boundaries of physical components. The actions of multiple functional blocks can be performed by one physical component, or the action of one functional block can be performed by multiple physical components. As for the processing steps described in the embodiments, the order of the processing can be changed as long as not contradictory. The base station 10 and the terminal 20 are described using a functional block diagram for facilitating the description of the processing, but such devices can also be implemented by hardware, software, or a combination thereof. Software that acts according to the embodiments of the present application by a processor included in the base station 10 and software that acts according to the embodiments of the present application by a processor included in the terminal 20 can each be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an EPROM, an EEPROM, a register, a hard disk (HDD), a removable disk, a CD-ROM, a database, a server, and another appropriate arbitrary storage medium.

[0299] Further, the notification of the information is not limited to the forms / embodiments explained in the present disclosure, and can be performed using other methods. For example, the notification of the information can be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. Further, the RRC signaling can also be referred to as an RRC message, for example, can also be an RRC connection setup message, an RRC connection reconfiguration message, or the like.

[0300] The forms / embodiments described in the present disclosure can also be applied to at least one of systems utilizing LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer, a fraction, etc.)), FRA (Future Radio Access), NR (new Radio), new radio access (NX), future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other appropriate systems, and next-generation systems extended, modified, created, and specified based on these systems. Furthermore, a plurality of systems (for example, at least one of LTE and LTE-A and 5G, etc.) can be combined and applied.

[0301] For the processing steps, timing, flow, etc. of the forms / embodiments described in the present specification, the order can be changed without contradiction. For example, for the methods described in the present disclosure, the elements of various steps are prompted using the order of the examples, but are not limited to the specific order prompted.

[0302] In the present specification, certain actions performed by the base station 10 are sometimes also performed by an upper node thereof according to the situation. In a network constituted by one or a plurality of network nodes having the base station 10, it is obvious that various actions performed for communication with the terminal 20 can be performed by at least one of the base station 10 and other network nodes (for example, an MME or an S-GW, but not limited to these) other than the base station 10. In the above, a case where the other network nodes are one is exemplified, but the other network nodes can also be a combination of a plurality of other network nodes (for example, an MME and an S-GW).

[0303] Information or a signal and the like explained in the present disclosure can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It can also be input or output via a plurality of network nodes.

[0304] Information and the like input or output can be saved in a specific location (for example, a memory), and can be managed using a management table. Information and the like input or output can be rewritten, updated, or appended. Information and the like output can also be deleted. Information and the like input can also be transmitted to other apparatuses.

[0305] Determination in the present disclosure can be performed by a value (0 or 1) represented by 1 bit, by a Boolean value (true or false), or by comparison of numerical values (for example, comparison with a predetermined value).

[0306] As for software, regardless of being called software, firmware, middleware, microcode, hardware description language, or by another name, it should be broadly interpreted as meaning a command, a command set, code, a code segment, program code, a program, a subprogram, a software module, an application, a software application, a software package, a routine, a subprogram, an object, an executable file, an execution thread, a procedure, a function, and the like.

[0307] In addition, software, commands, information, and the like can also be transmitted and received via a transmission medium. For example, in a case where software is transmitted from a web page, a server, or another remote source using at least one of wired technology (coaxial cable, optical fiber cable, twisted pair cable, digital subscriber line (DSL), and the like) and wireless technology (infrared rays, microwaves, and the like), at least one of these wired technology and wireless technology is included in the definition of the transmission medium.

[0308] The information, signals, and / or the like described in the present disclosure can be represented using various different technologies and / or techniques. For example, data, commands, instructions, information, signals, bits, symbols, chips, and / or the like that can be referenced throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0309] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure can be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol can also be a signal (signaling). Also, a signal can be a message. Also, a component carrier (CC) can be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

[0310] The terms "system" and "network" used in the present disclosure can be used interchangeably.

[0311] Also, the information, parameters, and / or the like described in the present disclosure can be represented using absolute values, relative values with respect to predetermined values, or corresponding other information. For example, a radio resource can be indicated using an index.

[0312] The names used for the above-described parameters are not restrictive names in any respect. Further, the formulas and / or the like using these parameters are sometimes different from those explicitly disclosed in the present disclosure. Various channels (e.g., PUCCH, PDCCH, and / or the like) and information elements can be identified by all appropriate names, and thus various names assigned to the various channels and information elements are not restrictive names in any respect.

[0313] In the present disclosure, the terms "base station (BS)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier", and / or the like can be used interchangeably. The base station is sometimes referred to as a macro cell, a small cell, a femto cell, a pico cell, and / or the like.

[0314] A base station can accommodate one or plural (for example, 3) cells. In a case where the base station accommodates plural cells, the entire coverage area of the base station can be divided into plural smaller areas, each of which can also be provided with communication services by a base station subsystem (for example, a small-sized base station (RRH: Remote Radio Head) for indoor use). The term "cell" or "sector" refers to a part or the entirety of the coverage area of at least one of the base station and the base station subsystem that provides communication services in the coverage area.

[0315] In the present disclosure, the base station transmitting information to the terminal can also be replaced with the base station instructing the terminal of a control / action based on the information.

[0316] In the present disclosure, the terms "mobile station (MS)", "user terminal", "user equipment (UE)", "terminal", and the like can be used interchangeably.

[0317] For a mobile station, the following terms are also used by those skilled in the art: subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0318] At least one of the base station and the mobile station can also be referred to as a transmission device, a reception device, a communication device, or the like. In addition, at least one of the base station and the mobile station can also be a device mounted on a moving body, the moving body itself, or the like. The moving body refers to an object that can move, and the moving speed is arbitrary. In addition, of course, a case where the moving body is stopped is also included. The moving body includes, for example, a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a connected car, a shovel car, a bulldozer, a wheel loader, a dump truck, a forklift, a train, a bus, a rear car, a rickshaw, a ship and other watercraft, an airplane, a rocket, an artificial satellite, a drone (registered trademark), a multicopter, a quadcopter, a balloon, and an object mounted thereon, and is not limited thereto. In addition, the moving body can also be a moving body that autonomously travels based on a travel instruction. It can be a vehicle (for example, a car, an airplane, or the like), a moving body that moves in a unmanned manner (for example, a drone, a self-driving car, or the like), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also 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 can be an IoT (Internet of Things) device such as a sensor.

[0319] In addition, the base station in the present disclosure can also be replaced with a user terminal. For example, a structure in which communication between the base station and the user terminal is replaced with communication between a plurality of terminals 20 (for example, also referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), or the like) can also apply the forms / embodiments of the present disclosure. In this case, it can also be configured such that the terminal 20 has the functions of the base station 10 described above. In addition, the expressions such as "uplink" and "downlink" can also be replaced with expressions corresponding to inter-terminal communication (for example, "side"). For example, the uplink channel, the downlink channel, and the like can also be replaced with a side channel.

[0320] Similarly, the user terminal in the present disclosure can also be replaced with a base station. In this case, it can also be configured such that the base station has the functions of the user terminal described above.

[0321] The terms "determining" and "deciding" as used in the present disclosure also include a variety of actions. For example, "determining" or "deciding" can include "determining" or "deciding" that a state of affairs has been judged, calculated, computed, processed, derived, investigated, searched (e.g., searched in a table, a database, or other data structure), ascertained, or the like. In addition, "determining" or "deciding" can include "determining" or "deciding" that a state of affairs has been received (e.g., received information), transmitted (e.g., transmitted information), input, output, accessed (e.g., accessed data in a memory), or the like. Furthermore, "determining" or "deciding" can include "determining" or "deciding" that a state of affairs has been resolved, selected, chosen, established, compared, or the like. That is, "determining" or "deciding" can include "determining" or "deciding" that a certain action has been performed. In addition, "determining" or "deciding" can be replaced by "assuming", "expecting", "considering", or the like.

[0322] The terms "connected" and "coupled" or all modifications thereof are intended to mean all possible direct or indirect connections or couplings between two or more elements. Such a connection or coupling between elements can include one or more intervening elements. The coupling or connection between elements can be physical or logical, or a combination thereof. For example, "connected" or "coupled" can be replaced with "accessed". In the present disclosure, it can be considered that two elements are "connected" or "coupled" to each other using at least one of a wire, a cable, and a printed electrical connection, and as some non-limiting and non-inclusive examples, electromagnetic energy having a wavelength in a radio frequency region, a microwave region, and an optical region (including both visible and invisible regions) is used to "connect" or "couple" to each other.

[0323] The reference signal can be simply referred to as RS (Reference Signal), and can be referred to as a pilot according to the applied standard.

[0324] The expression "based on" as used in the present disclosure is not intended to mean "only based on" unless specifically stated otherwise. In other words, the expression "based on" means both "only based on" and "at least based on".

[0325] Any reference to elements using the expressions "1st", "2nd", and the like used in the present disclosure does not necessarily limit the number or order of the elements. These expressions can be used in the present disclosure as a convenient method of distinguishing between two or more elements. Accordingly, a reference to a 1st element and a 2nd element does not mean that only two elements are possible or that the 1st element must precede the 2nd element in any way.

[0326] The expression "unit" in the structure of each of the above-described apparatuses can be replaced with the expression "part", "circuit", "device", or the like.

[0327] When the expressions "include", "including", and variations thereof are used in the present disclosure, these expressions mean the same as the expression "comprising". Also, the expression "or" used in the present disclosure does not mean the exclusive or.

[0328] A radio frame can be composed of one or more slots in the time domain. In the time domain, one or more slots can be referred to as a subframe. A subframe can also be composed of one or more slots in the time domain. A subframe can also be a fixed length of time (e.g., 1 ms) independent of numerology.

[0329] Numerology can be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. Numerology can mean at least one of, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing by a transceiver in the frequency domain, specific windowing processing by a transceiver in the time domain, and the like.

[0330] A slot can be constituted by one or a plurality of symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, and the like) in the time domain. A slot can be a time unit based on a numerology.

[0331] A slot can include a plurality of mini-slots. Each mini-slot can be constituted by one or a plurality of symbols in the time domain. Further, a mini-slot can also be referred to as a sub-slot. A mini-slot can be constituted by a smaller number of symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot can be referred to as PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot can be referred to as PDSCH (or PUSCH) mapping type B.

[0332] A radio frame, a subframe, a slot, a mini-slot, and a symbol each represent a time unit in transmission of a signal. A radio frame, a subframe, a slot, a mini-slot, and a symbol can each be referred to by another corresponding term.

[0333] For example, 1 subframe can be referred to as a transmission time interval (TTI), a plurality of consecutive subframes can also be referred to as a TTI, 1 slot or 1 mini-slot can also be referred to as a TTI. That is, at least one of a subframe and a TTI can be a subframe (1 ms) in the existing LTE, can be a period shorter than 1 ms (for example, 1 to 13 symbols), or can be a period longer than 1 ms. In addition, a unit representing a TTI can not be referred to as a subframe, but can be referred to as a slot, a mini-slot, or the like.

[0334] Here, a TTI, for example, refers to a minimum time unit of scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling in which a radio resource (a frequency bandwidth, a transmission power, and the like, which can be used in each terminal 20) is allocated to each terminal 20 in units of a TTI. In addition, the definition of a TTI is not limited thereto.

[0335] A TTI can be a transmission time unit of a data packet (a transport block) after channel coding, a code block, a codeword, or the like, or can be a processing unit of scheduling, link adaptation, or the like. In addition, when a TTI is given, a time interval (for example, a number of symbols) in which a transport block, a code block, a codeword, or the like is actually mapped can be shorter than the TTI.

[0336] In addition, in a case where 1 slot or 1 mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) can also be the minimum time unit of scheduling. Furthermore, the number of slots (mini-slots) constituting the minimum time unit of scheduling can also be controlled.

[0337] A TTI having a time length of 1 ms is also referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI (normal TTI), a long TTI (long TTI), a normal subframe, a normal subframe (normal subframe), a long (long) subframe, a slot, and the like. A TTI shorter than the normal TTI can also be referred to as a shortened TTI, a short TTI (short TTI), a partial TTI (partial or fractional TTI), a shortened subframe, a short (short) subframe, a mini-slot, a sub-slot, a slot, and the like.

[0338] In addition, for a long TTI (long TTI) (e.g., a normal TTI, a subframe, and the like), it can be understood as a TTI having a time length exceeding 1 ms, and for a short TTI (short TTI) (e.g., a shortened TTI, and the like), it can be understood as a TTI having a TTI length shorter than that of the long TTI (long TTI) and a TTI length of 1 ms or more.

[0339] A resource block (RB: Resource block) is a resource allocation unit in the time domain and the frequency domain, and can include one or more contiguous subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB can be the same regardless of the numerology, and can be 12, for example. The number of subcarriers included in the RB can also be determined according to the numerology.

[0340] Furthermore, the time domain of the RB can include one or more symbols, and can be the length of 1 slot, 1 mini-slot, 1 subframe, or 1 TTI. One TTI, one subframe, and the like can each be constituted by one or more resource blocks.

[0341] In addition, one or more RBs can also be referred to as a physical resource block (PRB: Physical RB), a subcarrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, and the like.

[0342] Furthermore, a resource block can be constituted by one or more resource elements (RE: Resource Element). For example, 1 RE can be a wireless resource area of 1 subcarrier and 1 symbol.

[0343] A bandwidth part (BWP: Bandwidth Part) (may also be referred to as a partial bandwidth, etc.) can also indicate a subset of contiguous common RBs (resource blocks) for a certain numerology in a certain carrier. Here, the common RBs can be determined by the index of the RBs with reference to a common reference point of the carrier. The PRB can be defined in a certain BWP and numbered within the BWP.

[0344] A BWP can include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs can be configured for a UE within one carrier.

[0345] At least one of the configured BWPs can be active, and it can not be assumed that the UE transmits / receives a predetermined signal / channel outside the active BWP. In addition, "cell", "carrier", etc. in the present disclosure can be replaced with "BWP".

[0346] The structures of the radio frame, the subframe, the slot, the mini-slot, the symbol, etc. described above 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 a 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.

[0347] In the present disclosure, for example, in a case where an article is added by a translation of a, an, and the in English, the present disclosure also includes a case where the article following these articles is plural.

[0348] In the present disclosure, the expression "A and B are different" can mean "A and B are mutually different". In addition, the expression can also mean "A and B are each different from C". The expressions "separate", "combine", and the like can also be interpreted as "different" as well.

[0349] Each form / implementation described in the present disclosure can be used alone, in combination, and can also be switched in use according to execution. In addition, the notification of predetermined information is not limited to being performed explicitly (for example, notification of "X is") and can also be performed implicitly (for example, without performing the notification of the predetermined information).

[0350] The present disclosure has been described in detail above, but it should be apparent that the present disclosure is not limited to the embodiments described above, but can be carried out in various changes and modified modes without departing from the spirit and scope of the present disclosure defined by the claims. The description of the present disclosure is intended for the purpose of illustration only and is not intended to limit the present disclosure in any way.

[0351] REFERENCE NUMERALS

[0352] 10 base station

[0353] 110 transmission section

[0354] 120 reception section

[0355] 130 setting section

[0356] 140 control section

[0357] 20 terminal

[0358] 210 transmission section

[0359] 220 reception section

[0360] 230 setting section

[0361] 240 control section

[0362] 30 core network

[0363] 1001 processor

[0364] 1002 storage

[0365] 1003 auxiliary storage

[0366] 1004 communication device

[0367] 1005 input device

[0368] 1006 output device

[0369] 2001 vehicle

[0370] 2002 drive section

[0371] 2003 steering section

[0372] 2004 accelerator pedal

[0373] 2005 brake pedal

[0374] 2006 shift lever

[0375] 2007 front wheel

[0376] 2008 rear wheel

[0377] 2009 axle

[0378] 2010 electronic control unit

[0379] 2012 information service unit

[0380] 2013 communication module

[0381] 2021 current sensor

[0382] 2022 rotational speed sensor

[0383] 2023 air pressure sensor

[0384] 2024 vehicle speed sensor

[0385] 2025 acceleration sensor

[0386] 2026 brake pedal sensor

[0387] 2027 gear lever sensor

[0388] 2028 object detection sensor

[0389] 2029 accelerator pedal sensor

[0390] 2030 driving assistance system unit

[0391] 2031 microprocessor

[0392] 2032 memory (ROM, RAM)

[0393] 2033 communication port (I / O port)

Claims

1. A terminal having: The receiving unit receives settings related to the CSI report, i.e., the channel state information report, from the base station; The control unit, based on the reporting settings included in the settings, performs measurements of the CSI-RS transmitted from the base station, whereby CSI-RS refers to Channel State Information Reference Signal; and The transmitting unit, based on the measurement results, sends a CSI report to the base station via the PUCCH (Physical Uplink Control Channel). The control unit activates the SP-CSI corresponding to the sub-setting based on the identifier of the sub-setting included in the report setting. The SP-CSI refers to Semi-Persistent Channel State Information.

2. The terminal according to claim 1, wherein, The control unit simultaneously activates all sub-settings contained in a report setting.

3. The terminal according to claim 1, wherein, The control unit activates the SP-CSI corresponding to the sub-setting based on MAC-CE, i.e., Media Access Control-Control Element.

4. The terminal according to claim 1, wherein, In order to determine the sub-settings included in a report setting, the control unit uses fields of bitmaps or fields representing code points.

5. The terminal according to claim 1, wherein, The control unit activates the SP-CSI corresponding to the sub-setting based on identifying the sub-settings included in all report settings and the identifier of the report settings, or by identifying the identifier of the report settings.

6. A communication method in which a terminal performs the following steps: Receive settings related to CSI reports (channel state information reports) from the base station; Based on the reporting settings included in the settings, measurements of CSI-RS transmitted from the base station are performed, where CSI-RS refers to Channel State Information Reference Signal; Based on the measurement results, a CSI report is sent to the base station via the PUCCH (Physical Uplink Control Channel); and Based on the identifier of the sub-setting included in the report setting, activate the SP-CSI corresponding to the sub-setting, where SP-CSI refers to semi-persistent channel state information.

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