Method and device for performing communication in wireless communication system

Abstract

Disclosed are a method and a device for performing communication in a wireless communication system according to various embodiments. The device may: receive a configuration for UE-triggered channel state information (CSI) reporting; receive indication information including information on a time window in which the UE-triggered CSI reporting is restricted; and perform the UE-triggered CSI reporting on the basis of the configuration information and the indication information.

Description

Method for performing communication in a wireless communication system and device therefor

[0001] This relates to a method for a terminal to perform communication in a wireless communication system and a device therefor.

[0002] Wireless communication systems are multiple access systems that support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and multi-carrier frequency division multiple access (MC-FDMA).

[0003] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide various services anytime, anywhere, is also a key issue to be considered in next-generation communication. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. The introduction of next-generation radio access technologies that take into account enhanced mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed. For convenience, these technologies are referred to as new RAT or NR in the present invention.

[0004] The technical challenge is to provide a method for terminals to transmit and receive signals more accurately and efficiently.

[0005] The technical challenges are not limited to the technical challenges mentioned above, and other technical challenges not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0006] A method by a UE (User Equipment) according to one aspect may include: receiving a UE trigger-based CSI (channel state information) reporting configuration; receiving instruction information including information on a time window within which performance of the UE trigger-based CSI reporting is restricted; and performing the UE trigger-based CSI reporting based on the configuration information and the instruction information.

[0007] Alternatively, at least one reporting resource set within the time window is determined to be an invalid reporting resource.

[0008] Alternatively, the UE is characterized in that it determines at least one measurement resource set within the time window as a valid measurement resource and performs measurement on the at least one measurement resource.

[0009] Alternatively, the UE trigger-based CSI reporting configuration includes information about a threshold intensity, a threshold number, and a measurement resource validity period, and the UE trigger-based CSI reporting is characterized in that it is triggered based on the number of consecutive measurement resources in which a measurement value exceeding the threshold intensity is measured being greater than or equal to the threshold number.

[0010] Alternatively, the measurement resource validity period may start from a time resource at which the UE trigger-based CSI report is triggered, and the UE trigger-based CSI report may include measurement information measured for at least one measurement resource within the measurement resource validity period.

[0011] Alternatively, based on the overlap between the measurement resource validity period and the time window, the performance of the triggered CSI report is characterized in that it is dropped.

[0012] Alternatively, the measurement resource within the time window is characterized in that it is not counted as the number of the continuous measurement resources even if a measurement value exceeding the threshold intensity is measured.

[0013] Alternatively, the time window is characterized in that it is set based on a time period during which the SBFD (Sub-band Full Duplex) operation of the base station is performed.

[0014] According to another aspect, at least one non-transitory computer-readable storage medium having recorded thereon instructions for performing the method by the UE described above may be provided.

[0015] According to another aspect, a UE performing the above-described method may be provided.

[0016] According to another aspect, a processing device may be provided for controlling a UE performing the above-described method.

[0017] A method by a base station according to another aspect may include: transmitting a UE (User Equipment) trigger-based CSI (channel state information) reporting configuration; transmitting indication information including information about a time window within which performance of the UE trigger-based CSI reporting is restricted; and receiving the UE trigger-based CSI reporting based on the configuration information and the indication information.

[0018] According to another aspect, a base station performing the above-described method may be provided.

[0019] Various embodiments enable the terminal to transmit and receive signals accurately and efficiently.

[0020] The effects that can be obtained in various embodiments are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0021] The drawings attached to this specification are intended to provide an understanding of the present invention, illustrate various embodiments of the present invention, and together with the description of the specification serve to explain the principles of the present invention.

[0022] Figure 1 shows the structure of an LTE system.

[0023] Figure 2 shows the structure of the NR system.

[0024] Figure 3 shows the structure of a radio frame of NR.

[0025] Figure 4 shows the slot structure of an NR frame.

[0026] FIG. 5 is a diagram for explaining physical channels that can be used in various embodiments and a signal transmission method using the same.

[0027] Figure 6 illustrates a process in which a terminal transmits ACK / NACK via PUSCH.

[0028] Figure 7 shows an example of a CSI-related procedure.

[0029] FIGS. 8 to 12 are diagrams for explaining a UE-initiated / triggered CSI reporting method.

[0030] Figure 13 is a diagram for explaining how a UE performs UEI CSI reporting.

[0031] FIG. 14 is a diagram illustrating a method for a base station to set up UEI CSI reporting for a UE.

[0032] Figure 15 illustrates a communication system applied to the present invention.

[0033] Figure 16 illustrates a wireless device applicable to the present invention.

[0034] Figure 17 shows another example of a wireless device applied to the present invention.

[0035] A wireless communication system is a multiple access system that supports communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and multi-carrier frequency division multiple access (MC-FDMA).

[0036] Sidelink refers to a communication method that establishes a direct link between user equipment (UE), allowing voice or data to be exchanged directly between terminals without going through a base station (BS). Sidelink is being considered as a solution to address the burden on base stations due to rapidly increasing data traffic.

[0037] V2X (vehicle-to-everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-based objects through wired / wireless communication. V2X can be divided into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication can be provided through the PC5 interface and / or Uu interface.

[0038] Meanwhile, as more and more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Accordingly, communication systems that consider services or terminals sensitive to reliability and latency are being discussed. Next-generation wireless access technologies that consider improved mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) can be called new radio access technology (RAT) or new radio (NR). NR can also support V2X (vehicle-to-everything) communication.

[0039] The following technologies can be used in various wireless communication systems, such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (evolved UTRA). IEEE 802.16m is an evolution of IEEE 802.16e, providing backward compatibility with systems based on IEEE 802.16e. UTRA is part of UMTS (universal mobile telecommunications system). 3GPP (3rd generation partnership project) LTE (long term evolution) is a part of E-UMTS (evolved UMTS) that uses E-UTRA (evolved-UMTS terrestrial radio access), employing OFDMA in the downlink and SC-FDMA in the uplink.LTE-A (advanced) is an evolution of 3GPP LTE.

[0040] 5G NR, the successor to LTE-A, is a new clean-slate mobile communications system featuring high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0041] For clarity, the description will focus on LTE-A or 5G NR, but the technical ideas of the embodiment(s) are not limited thereto.

[0042] Figure 1 illustrates the architecture of an applicable LTE system. This may be referred to as an Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN) or a Long Term Evolution (LTE) / LTE-A system.

[0043] Referring to FIG. 1, the E-UTRAN includes a base station (20; BS) that provides a control plane and a user plane to a terminal (10). The terminal (10) may be fixed or mobile, and may be referred to by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, etc. The base station (20) refers to a fixed station that communicates with the terminal (10), and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, etc.

[0044] Base stations (20) can be connected to each other via the X2 interface. The base station (20) is connected to an EPC (Evolved Packet Core, 30) via the S1 interface, more specifically, to an MME (Mobility Management Entity) via the S1-MME, and to an S-GW (Serving Gateway) via the S1-U.

[0045] The EPC (30) consists of an MME, an S-GW, and a P-GW (Packet Data Network-Gateway). The MME holds information about terminal access and capabilities, and this information is primarily used for terminal mobility management. The S-GW is a gateway with the E-UTRAN as its endpoint, and the P-GW is a gateway with the PDN as its endpoint.

[0046] The layers of the radio interface protocol between the terminal and the network can be divided into L1 (Layer 1), L2 (Layer 2), and L3 (Layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Among these, the physical layer belonging to Layer 1 provides an information transfer service using a physical channel, and the RRC (Radio Resource Control) layer located in Layer 3 controls radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0047] Figure 2 shows the structure of the NR system.

[0048] Referring to FIG. 2, the NG-RAN may include a gNB and / or an eNB that provides user plane and control plane protocol termination to the UE. FIG. 1 illustrates a case where only a gNB is included. The gNB and eNB are connected to each other via an Xn interface. The gNB and eNB are connected to the 5th generation core network (5G Core Network: 5GC) via the NG interface. More specifically, the gNB is connected to the access and mobility management function (AMF) via the NG-C interface, and the gNB is connected to the user plane function (UPF) via the NG-U interface.

[0049] Figure 3 shows the structure of a radio frame of NR.

[0050] Referring to FIG. 3, radio frames can be used for uplink and downlink transmission in NR. A radio frame has a length of 10 ms and can be defined as two 5 ms half-frames (Half-Frames, HF). A half-frame can include five 1 ms sub-frames (Subframes, SF). A sub-frame can be divided into one or more slots, and the number of slots within a sub-frame can be determined by the Subcarrier Spacing (SCS). Each slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0051] When normal CP is used, each slot can contain 14 symbols. When extended CP is used, each slot can contain 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA (Single Carrier - FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0052] Table 1 below shows the number of symbols per slot ((N)) depending on the SCS setting (u) when normal CP is used. slot symb ), number of slots per frame ((N frame,u slot ) and the number of slots per subframe ((N subframe,u slot ) is an example.

[0053] SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot 15KHz (u=0)1410130KHz (u=1)1420260KHz (u=2)14404120KHz (u=3)14808240KHz (u=4)1416016

[0054] Table 2 illustrates the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to SCS when extended CP is used.

[0055] SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot 60KHz (u=2)12404

[0056] In an NR system, OFDM(A) numerologies (e.g., SCS, CP length, etc.) can be configured differently across multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., subframe, slot, or TTI) (conveniently referred to as a TU (Time Unit)) consisting of the same number of symbols can be configured differently across the merged cells. In NR, multiple numerologies or SCSs can be supported to support various 5G services. For example, when the SCS is 15 kHz, a wide area in traditional cellular bands can be supported, and when the SCS is 30 kHz / 60 kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. When the SCS is 60 kHz or higher, bandwidths greater than 24.25 GHz may be supported to overcome phase noise.

[0057] The NR frequency band can be defined by two types of frequency ranges. The two types of frequency ranges can be FR1 and FR2. The numerical values ​​of the frequency ranges can be changed, and for example, the two types of frequency ranges can be as shown in Table 3 below. Among the frequency ranges used in the NR system, FR1 can mean the "sub 6 GHz range", and FR2 can mean the "above 6 GHz range" and can be called millimeter wave (mmW).

[0058] Frequency Range designationCorresponding frequency rangeSubcarrier Spacing (SCS)FR1450MHz - 6000MHz15, 30, 60kHzFR224250MHz - 52600MHz60, 120, 240kHz

[0059] As described above, the numerical value of the frequency range of the NR system can be changed. For example, FR1 may include a band from 410 MHz to 7125 MHz, as shown in Table 4 below. That is, FR1 may include a frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included within FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, such as for vehicular communications (e.g., autonomous driving).

[0060] Frequency Range designationCorresponding frequency rangeSubcarrier Spacing (SCS)FR1410MHz - 7125MHz15, 30, 60kHzFR224250MHz - 52600MHz60, 120, 240kHz

[0061] Figure 4 shows the slot structure of an NR frame.

[0062] Referring to Figure 4, a slot includes multiple symbols in the time domain. For example, in the case of a normal CP, one slot may include 14 symbols, but in the case of an extended CP, one slot may include 12 symbols. Alternatively, in the case of a normal CP, one slot may include 7 symbols, but in the case of an extended CP, one slot may include 6 symbols.

[0063] A carrier includes multiple subcarriers in the frequency domain. An RB (Resource Block) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) can be defined as multiple consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain, and can correspond to one numerology (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through activated BWPs. Each element can be referred to as a Resource Element (RE) in the resource grid, and one complex symbol can be mapped to it.

[0064] Meanwhile, the wireless interface between terminals or between terminals and a network may be composed of an L1 layer, an L2 layer, and an L3 layer. In various embodiments of the present disclosure, the L1 layer may refer to a physical layer. Furthermore, for example, the L2 layer may refer to at least one of a MAC layer, an RLC layer, a PDCP layer, and an SDAP layer. Furthermore, for example, the L3 layer may refer to an RRC layer.

[0065] Bandwidth part (BWP)

[0066] The NR system can support up to 400 MHz per component carrier (CC). If a terminal operating in such a wideband CC always operates with the RF on for the entire CC, the terminal battery consumption may increase. Alternatively, when considering multiple use cases (e.g., eMBB, URLLC, MMTC, V2X, etc.) operating within a wideband CC, different numerologies (e.g., sub-carrier spacing) may be supported for each frequency band within the CC. Alternatively, each terminal may have different capabilities for maximum bandwidth. Considering this, the base station can instruct the terminal to operate only in a portion of the bandwidth rather than the entire bandwidth of the wideband CC, and this portion of bandwidth is conveniently defined as a bandwidth part (BWP). A BWP can be composed of consecutive resource blocks (RBs) on the frequency axis and can correspond to a single numerology (e.g., sub-carrier spacing, CP length, slot / mini-slot duration).

[0067] Meanwhile, the base station can set multiple BWPs even within a single CC configured for the UE. For example, in the PDCCH monitoring slot, a BWP occupying a relatively small frequency range can be set, and the PDSCH indicated by the PDCCH can be scheduled on a larger BWP. Alternatively, if UEs are concentrated in a specific BWP, some UEs can be set to a different BWP for load balancing. Alternatively, considering frequency domain inter-cell interference cancellation between neighboring cells, a portion of the spectrum in the middle of the total bandwidth can be excluded, and both BWPs can be set within the same slot. That is, the base station can configure at least one DL / UL BWP for a terminal associated with a wideband CC, and can activate at least one DL / UL BWP among the configured DL / UL BWP(s) at a specific point in time (by L1 signaling or MAC CE or RRC signaling, etc.), and switching to another configured DL / UL BWP can be indicated (by L1 signaling or MAC CE or RRC signaling, etc.), or switching to a predetermined DL / UL BWP when the timer value expires based on a timer. At this time, the activated DL / UL BWP is defined as the active DL / UL BWP. However, the terminal may not receive the configuration for the DL / UL BWP in situations such as when the terminal is in the initial access process or before the RRC connection is set up. In such situations, the DL / UL BWP assumed by the terminal is defined as the initial active DL / UL BWP.

[0068] FIG. 5 is a diagram for explaining physical channels that can be used in various embodiments and a signal transmission method using the same.

[0069] Referring to FIG. 5, a terminal that is powered on again after being powered off or that has newly entered a cell performs an initial cell search operation, such as synchronizing with the base station, in step S101. To this end, the terminal receives a Synchronization Signal Block (SSB) from the base station. The SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). The terminal synchronizes with the base station based on the PSS / SSS and obtains information such as a cell ID. In addition, the terminal can obtain broadcast information within the cell based on the PBCH. Meanwhile, the terminal can check the downlink channel status by receiving a Downlink Reference Signal (DL RS) during the initial cell search phase.

[0070] A terminal that has completed initial cell search can obtain more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on physical downlink control channel information (S12).

[0071] Thereafter, the terminal may perform a random access procedure to complete connection to the base station (S13 to S16). To this end, the terminal may transmit a preamble through a physical random access channel (PRACH) (S13) and receive a random access response (RAR) for the preamble through a physical downlink control channel and a corresponding physical downlink shared channel (S14). The terminal may transmit a physical uplink shared channel (PUSCH) using scheduling information in the RAR (S15) and perform a contention resolution procedure such as receiving a physical downlink control channel signal and a corresponding physical downlink shared channel signal (S16).

[0072] Meanwhile, in addition to the random access process performed in 4 steps as above (4-step RACH, type-1 random access procedure), when the random access process is performed in 2 steps (2-step RACH, type-2 random access procedure), S13 / S15 may be performed as one operation in which the terminal performs transmission (e.g., transmission operation of message A including PRACH preamble and / or PUSCH), and S14 / S16 may be performed as one operation in which the base station performs transmission (e.g., transmission operation of message B including RAR and / or collision resolution information).

[0073] A terminal that has performed the procedure described above can then perform general uplink / downlink signal transmission procedures, such as receiving a physical downlink control channel signal and / or a physical downlink shared channel signal (S17) and transmitting a physical uplink shared channel (PUSCH: Physical Uplink Shared Channel) signal and / or a physical uplink control channel (PUCCH: Physical Uplink Control Channel) signal (S18).

[0074] Control information transmitted from a terminal to a base station is collectively referred to as uplink control information (UCI). UCI includes information such as HARQ-ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CQI (Channel Quality Indication), PMI (Precoding Matrix Indication), and RI (Rank Indication).

[0075] UCI is typically transmitted periodically over the PUCCH, but can also be transmitted over the PUSCH when control information and data must be transmitted simultaneously. Furthermore, terminals can transmit UCI aperiodically over the PUSCH at the request / instruction of the network.

[0076] Figure 6 illustrates a process in which a terminal transmits ACK / NACK via PUSCH.

[0077] Referring to FIG. 6, the terminal can detect a PDCCH in slot #n. Here, the PDCCH includes downlink scheduling information (e.g., DCI formats 1_0, 1_1), and the PDCCH indicates a DL assignment-to-PDSCH offset (K0) and a PDSCH-HARQ-ACK reporting offset (K1). For example, DCI formats 1_0, 1_1 can include the following information:

[0078] - Frequency domain resource assignment: Indicates the set of RBs allocated to the PDSCH.

[0079] - Time domain resource assignment: K0 (e.g., slot offset), indicates the starting position of the PDSCH within slot #n+K0 (e.g., OFDM symbol index), and the length of the PDSCH (e.g., number of OFDM symbols).

[0080] - PDSCH-to-HARQ_feedback timing indicator: Indicates K1

[0081] - HARQ process number (4 bits): Indicates the HARQ process ID (Identity) for data (e.g., PDSCH, TB)

[0082] - PUCCH resource indicator (PRI): Indicates the PUCCH resource to be used for UCI transmission among multiple PUCCH resources within the PUCCH resource set.

[0083] Afterwards, the terminal receives PDSCH from slot #(n+K0) according to the scheduling information of slot #n, and when reception of PDSCH is finished in slot #n1 (where, n+K0≤n1), UCI can be transmitted through PUCCH in slot #(n1+K1). Here, UCI may include HARQ-ACK response for PDSCH. In Fig. 6, for convenience, it is assumed that SCS for PDSCH and SCS for PUCCH are the same and slot# n1 = slot# n+K0, but the present invention is not limited thereto. If the SCSs are different, K1 can be indicated / interpreted based on the SCS of PUCCH.

[0084] When the PDSCH is configured to transmit at most 1 TB, the HARQ-ACK response may consist of 1 bit. When the PDSCH is configured to transmit at most 2 TB, the HARQ-ACK response may consist of 2 bits if spatial bundling is not configured, and may consist of 1 bit if spatial bundling is configured. When the HARQ-ACK transmission timing for multiple PDSCHs is designated as slot #(n+K1), the UCI transmitted in slot #(n+K1) includes HARQ-ACK responses for multiple PDSCHs.

[0085] Whether a UE should perform spatial bundling for a HARQ-ACK response can be configured (e.g., via RRC / higher layer signaling) for each cell group. For example, spatial bundling can be individually configured for each HARQ-ACK response transmitted over the PUCCH and / or each HARQ-ACK response transmitted over the PUSCH.

[0086] Spatial bundling can be supported when the maximum number of TBs (or codewords) that can be received at a time (or scheduled via 1 DCI) in the serving cell is 2 (or more than 2) (e.g., when the upper layer parameter maxNrofCodeWordsScheduledByDCI corresponds to 2-TB). Meanwhile, more than 4 layers can be used for 2-TB transmission, and up to 4 layers can be used for 1-TB transmission. Consequently, when spatial bundling is configured for the cell group, spatial bundling can be performed for serving cells that can schedule more than 4 layers among the serving cells in the cell group. On the serving cell, a UE that wishes to transmit a HARQ-ACK response via spatial bundling can generate the HARQ-ACK response by performing a (bit-wise) logical AND operation on the A / N bits for multiple TBs.

[0087] For example, assuming that a terminal receives a DCI scheduling 2 TB and receives 2 TB via PDSCH based on the DCI, the terminal performing spatial bundling can generate a single A / N bit by logically ANDing the first A / N bit for the first TB and the second A / N bit for the second TB. Consequently, if both the first TB and the second TB are ACK, the terminal reports the ACK bit value to the base station, and if either TB is NACK, the terminal reports the NACK bit value to the base station.

[0088] For example, if only 1-TB is actually scheduled on a serving cell configured to receive 2-TB, the terminal can generate a single A / N bit by logically ANDing the A / N bit for the 1-TB with bit value 1. Consequently, the terminal reports the A / N bit for the 1-TB to the base station as is.

[0089] A base station / terminal has multiple parallel DL HARQ processes for DL ​​transmission. These multiple parallel HARQ processes allow DL transmissions to be performed continuously while waiting for HARQ feedback regarding the successful or unsuccessful reception of a previous DL transmission. Each HARQ process is associated with a HARQ buffer in the MAC (Medium Access Control) layer. Each DL HARQ process manages state variables such as the number of transmissions of MAC Physical Data Blocks (PDUs) in the buffer, HARQ feedback for MAC PDUs in the buffer, and the current redundancy version. Each HARQ process is identified by a HARQ process ID.

[0090] Below, the PUSCH transmission process is described.

[0091] The terminal can detect the PDCCH in slot #n. Here, the PDCCH includes uplink scheduling information (e.g., DCI formats 0_0 and 0_1). DCI formats 0_0 and 0_1 can include the following information.

[0092] - Frequency domain resource assignment: Indicates the set of RBs allocated to PUSCH.

[0093] - Time domain resource assignment: Slot offset K2 indicates the starting position (e.g., symbol index) and length (e.g., number of OFDM symbols) of the PUSCH within the slot. The starting symbol and length can be indicated through SLIV (Start and Length Indicator Value) or can be indicated separately.

[0094] Thereafter, the terminal can transmit a PUSCH in slot #(n+K2) according to the scheduling information of slot #n. Here, the PUSCH includes a UL-SCH TB.

[0095] CSI-related actions

[0096] Figure 7 shows an example of a CSI-related procedure.

[0097] The terminal receives configuration information related to CSI from the base station via RRC signaling (710). The configuration information related to CSI may include at least one of CSI-IM (interference management) resource-related information, CSI measurement configuration-related information, CSI resource configuration-related information, CSI-RS resource-related information, or CSI report configuration-related information.

[0098] - CSI-IM resources can be configured for interference measurement (IM) of the terminal. In the time domain, the CSI-IM resource set can be configured periodically, semi-persistently, or aperiodicly. The CSI-IM resources can be configured as Zero Power (ZP)-CSI-RS for the terminal. The ZP-CSI-RS can be configured separately from the Non-Zero Power (NZP)-CSI-RS.

[0099] - The UE may assume that the CSI-RS resource(s) for channel measurement configured for one CSI reporting and the CSI-IM / NZP CSI-RS resource(s) for interference measurement (when NZP CSI-RS resource(s) are used for interference measurement) are in a QCL relationship with respect to 'QCL-TypeD' per resource.

[0100] - The CSI resource configuration may include at least one of a CSI-IM resource for interference measurement, an NZP CSI-RS resource for interference measurement, and an NZP CSI-RS resource for channel measurement. The CMR (channel measurement resource) may be an NZP CSI-RS for CSI acquisition, and the IMR (Interference measurement resource) may be an NZP CSI-RS for CSI-IM and IM.

[0101] - CSI-RS can be configured for one or more terminals. Different CSI-RS configurations may be provided for each terminal, or the same CSI-RS configuration may be provided to multiple terminals. CSI-RS can support up to 32 antenna ports. CSI-RS corresponding to N (N is 1 or greater) antenna ports can be mapped to N RE locations within a time-frequency unit corresponding to one slot and one RB. When N is 2 or greater, N-port CSI-RS can be multiplexed using CDM, FDM, and / or TDM schemes. CSI-RS can be mapped to REs other than REs to which CORESET, DMRS, and SSB are mapped. In the frequency domain, CSI-RS can be configured for the entire bandwidth, a portion of the bandwidth (BWP), or a portion of the bandwidth. CSI-RS may be transmitted in each RB within the bandwidth for which CSI-RS is configured (i.e., density = 1), or in every second RB (e.g., even or odd RB) (i.e., density = 1 / 2). When CSI-RS is used as a Tracking Reference Signal (TRS), a single-port CSI-RS may be mapped on three subcarriers in each resource block (i.e., density = 3). One or more CSI-RS resource sets may be configured for a UE in the time domain. Each CSI-RS resource set may include one or more CSI-RS configurations. Each CSI-RS resource set may be configured periodically, semi-persistently, or aperiodicly.

[0102] - The CSI report configuration may include configurations for feedback type, measurement resources, report type, etc. The NZP-CSI-RS resource set may be used for the CSI report configuration of the corresponding terminal. The NZP-CSI-RS resource set may be associated with CSI-RS or SSB. In addition, multiple periodic NZP-CSI-RS resource sets may be configured as TRS resource sets. (i) The feedback type may include a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS Resource Indicator (CRI), an SSB Resource block Indicator (SSBRI), a Layer Indicator (LI), a Rank Indicator (RI), a Layer 1-Reference Signal Received Strength (RSRP), etc. (ii) Measurement resources may include configurations for downlink signals and / or downlink resources on which the terminal performs measurements to determine feedback information. The measurement resources may be configured as ZP and / or NZP CSI-RS resource sets associated with CSI reporting configurations. The NZP CSI-RS resource set may include a CSI-RS set or an SSB set. For example, L1-RSRP may be measured for a CSI-RS set or an SSB set. (iii) Reporting types may include configurations for a time point at which the terminal performs reporting and an uplink channel, etc. The reporting time point may be configured as periodic, semi-persistent, or aperiodic. Periodic CSI reporting may be transmitted on PUCCH. Semi-persistent CSI reporting may be transmitted on PUCCH or PUSCH based on a MAC CE indicating activation / deactivation. Aperiodic CSI reporting may be indicated by DCI signaling.For example, the CSI request field of an uplink grant may indicate one of several report trigger sizes. Aperiodic CSI reports may be transmitted on the PUSCH.

[0103] The terminal measures CSI based on configuration information related to CSI. CSI measurement may include a procedure of receiving a CSI-RS (720) and computing the received CSI-RS to acquire CSI (730).

[0104] The UE can transmit a CSI report to the base station (740). For the CSI report, the time and frequency resources that the UE can use are controlled by the base station. The CSI (channel state information) can include at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), an SS / PBCH block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), L1-RSRP, and / or L-SINR.

[0105] The time domain operation of CSI reporting supports periodic, semi-persistent, and aperiodic operations. i) Periodic CSI reporting is performed on short PUCCH and long PUCCH. The periodicity and slot offset of periodic CSI reporting can be configured by RRC, and refer to the CSI-ReportConfig IE. ii) Semi-periodic (SP) CSI reporting is performed on short PUCCH, long PUCCH, or PUSCH. In case of SP CSI on short / long PUCCH, the periodicity and slot offset are configured by RRC, and CSI reporting is activated / deactivated by separate MAC CE / DCI. In case of SP CSI on PUSCH, the periodicity of SP CSI reporting is set to RRC, but the slot offset is not set to RRC, and SP CSI reporting is activated / deactivated by DCI (format 0_1). A separate RNTI (SP-CSI C-RNTI) is used for SP CSI reporting on PUSCH. The timing of the first CSI report follows the PUSCH time domain allocation value indicated in the DCI, and the timing of subsequent CSI reports follows the period set by RRC. DCI format 0_1 ​​includes a CSI request field and can activate / deactivate a specific configured SP-CSI trigger state. SP CSI reporting has the same or similar activation / deactivation mechanism as that of data transmission on SPS PUSCH.iii) Aperiodic CSI reporting is performed on PUSCH and is triggered by DCI. In this case, information related to the trigger of aperiodic CSI reporting can be transmitted / indicated / configured via MAC-CE. For AP CSI with AP CSI-RS, the AP CSI-RS timing is configured by RRC, and the timing for AP CSI reporting is dynamically controlled by DCI.

[0106] CSI codebooks defined in the NR standard (e.g., PMI codebooks) can be broadly divided into Type I and Type II codebooks. Type I codebooks are primarily targeted at SU (Single User)-MIMO, which supports both high-order and low-order signals. Type II codebooks can primarily support MI-MIMO, which supports up to two layers. Compared to Type I, Type II codebooks can provide more accurate CSI, but may increase signaling overhead. Meanwhile, Enhanced Type II codebooks were introduced to address the CSI overhead shortcomings of existing Type II codebooks. Enhanced Type II codebooks were introduced by reducing the codebook payload by considering frequency-axis correlation.

[0107] CSI reporting via PUSCH can be configured as Part 1 and Part 2. Part 1 has a fixed payload size and is used to identify the number of information bits in Part 2. Part 1 is transmitted in its entirety before Part 2.

[0108] - For Type I CSI feedback, Part 1 contains the RI (if reported), the CRI (if reported), and the CQI of the first code word. Part 2 contains the PMI, and when RI > 4, Part 2 contains the CQI.

[0109] - For Type II CSI feedback, Part 1 contains the RI (if reported), CQI, and an indication of the number of non-zero WB amplitude coefficients per layer of Type II CSI. Part 2 contains the PMI of Type II CSI.

[0110] - For Enhanced Type II CSI feedback, Part 1 contains the RI (if reported), CQI, and the total number of non-zero WB amplitude coefficients for all layers of Enhanced Type II CSI. Part 2 contains the PMI of Enhanced Type II CSI.

[0111] If a CSI report on PUSCH includes two parts and the CSI payload to be reported is less than the payload size provided by the PUSCH resources allocated for CSI reporting, the UE may omit part of Part 2 CSI.

[0112] Meanwhile, semi-persistent CSI reporting performed in PUCCH format 3 or 4 supports Type II CSI feedback, but only Part 1 of Type II CSI feedback.

[0113] For CSI reporting, the time and frequency resources available to the UE are controlled by the base station.

[0114] CSI (channel state information) may include at least one of a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), an SS / PBCH block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), L1-RSRP, and / or L-SINR.

[0115] For CQI, PMI, CRI, SSBRI, LI, RI, and L1-RSRP, the UE is configured by a higher layer with N≥1 CSI-ReportConfig reporting settings, M≥1 CSI-ResourceConfig resource settings, and a list of one or two trigger states (provided by CSI-AperiodicTriggerStateList and CSI-SemiPersistentOnPUSCH-TriggerStateList). Each trigger state in the CSI-AperiodicTriggerStateList includes an associated list of CSI-ReportConfigs indicating resource set IDs for channel and optionally interference. Each trigger state in the CSI-SemiPersistentOnPUSCH-TriggerStateList includes one associated CSI-ReportConfig.

[0116] Additionally, the time domain behavior of CSI reporting supports periodic, semi-persistent, and aperiodic.

[0117] i) Periodic CSI reporting is performed on short PUCCH and long PUCCH. The periodicity and slot offset of periodic CSI reporting can be configured via RRC, and refer to the CSI-ReportConfig IE.

[0118] ii) SP (semi-periodic) CSI reporting is performed on short PUCCH, long PUCCH, or PUSCH.

[0119] In case of SP CSI on short / long PUCCH, the period and slot offset are set by RRC, and CSI reporting is activated / deactivated with a separate MAC CE / DCI.

[0120] In the case of SP CSI on PUSCH, the periodicity of SP CSI reporting is set to RRC, but the slot offset is not set to RRC, and SP CSI reporting is activated / deactivated by DCI (format 0_1). For SP CSI reporting on PUSCH, a separate RNTI (SP-CSI C-RNTI) is used.

[0121] The initial CSI reporting timing follows the PUSCH time domain allocation value indicated in the DCI, and subsequent CSI reporting timing follows the cycle set by RRC.

[0122] DCI format 0_1 ​​contains a CSI request field and can activate / deactivate a specific configured SP-CSI trigger state. SP CSI reporting has the same or similar activation / deactivation mechanism as data transmission on the SPS PUSCH.

[0123] iii) Aperiodic CSI reporting is performed on PUSCH and is triggered by DCI. In this case, information related to the triggering of aperiodic CSI reporting can be transmitted / indicated / configured via MAC-CE.

[0124] For AP CSI with AP CSI-RS, AP CSI-RS timing is set by RRC, and timing for AP CSI reporting is dynamically controlled by DCI.

[0125] NR does not apply the method of dividing CSI into multiple reporting instances (e.g., transmitting in the order of RI, WB PMI / CQI, and SB PMI / CQI) used for PUCCH-based CSI reporting in LTE. Instead, NR restricts specific CSI reporting on short / long PUCCHs and defines CSI omission rules. Furthermore, with respect to AP CSI reporting timing, PUSCH symbol / slot locations are dynamically indicated by DCI. Candidate slot offsets are configured by RRC. For CSI reporting, the slot offset (Y) is configured for each reporting setting. For UL-SCH, the slot offset K2 is configured separately.

[0126] Two CSI latency classes (low latency class, high latency class) are defined from the perspective of CSI computation complexity. Low latency CSI is WB CSI including up to 4 ports Type-I codebook or up to 4-port non-PMI feedback CSI. High latency CSI refers to any CSI other than low latency CSI. For a normal terminal, (Z, Z') is defined in units of OFDM symbols. Here, Z represents the minimum CSI processing time from receiving an aperiodic CSI triggering DCI to performing a CSI report. In addition, Z' represents the minimum CSI processing time from receiving a CSI-RS for channel / interference to performing a CSI report.

[0127] Additionally, the terminal reports the number of CSIs it can calculate simultaneously.

[0128] QCL (quasi-co location)

[0129] Two antenna ports are quasi-co-located if the channel properties of one antenna port can be inferred from the channel properties of the other antenna port. The channel properties may include one or more of Delay spread, Doppler spread, Frequency / Doppler shift, Average received power, Received Timing / average delay, and Spatial RX parameters.

[0130] A terminal can configure a list of multiple TCI-State configurations via the upper layer parameter PDSCH-Config. Each TCI-State is associated with one or two DL reference signals and a QCL configuration parameter between the DM-RS port of the PDSCH. The QCL can include qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS. The QCL type can correspond to one of the following:

[0131] - 'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}

[0132] - 'QCL-TypeB': {Doppler shift, Doppler spread}

[0133] - 'QCL-TypeC': {Doppler shift, average delay}

[0134] - 'QCL-TypeD': {Spatial Rx parameter}

[0135] Beam Management (BM)

[0136] The BM process is a process for acquiring and maintaining a set of BS (or transmission and reception point (TRP)) and / or UE beams that can be used for downlink (DL) and uplink (UL) transmission / reception, and may include the following processes and terms.

[0137] - Beam measurement: An operation in which a BS or UE measures the characteristics of a received beamforming signal.

[0138] - Beam determination: An operation in which a BS or UE selects its own transmit beam (Tx beam) / receive beam (Rx beam).

[0139] - Beam sweeping: An operation of covering a spatial domain using transmit and / or receive beams over a predetermined time interval in a predetermined manner.

[0140] - Beam report: An operation in which a UE reports information about a beamformed signal based on beam measurement.

[0141] The BM process can be divided into (1) a DL BM process using SSB or CSI-RS, and (2) a UL BM process using SRS (sounding reference signal). In addition, each BM process can include Tx beam sweeping to determine a Tx beam and Rx beam sweeping to determine an Rx beam.

[0142] At this time, the DL BM process may include (1) transmission of beamformed DL RSs (e.g., CSI-RS or SSB) by the BS and (2) beam reporting by the UE.

[0143] Here, the beam report may include preferred DL RS ID(s) and corresponding reference signal received power (RSRP). The DL RS ID may be an SSB Resource Indicator (SSBRI) or a CSI-RS Resource Indicator (CRI).

[0144] UE initiated CSI report considering network indicated CSI report

[0145] In wireless communication systems, layer-1 (physical layer) uplink control information has the advantage of relatively short transmission delay compared to control information in higher layers. For example, in order for a terminal to transmit some information to a base station using a MAC-CE or RRC message, a scheduling request (SR) procedure of the terminal and a PUSCH allocation procedure of the base station (based on the SR) may be required, which may result in delay and overhead. Furthermore, in general, the higher the layer information, the longer the time required to decode the information (e.g., decoding time, processing time) may be compared to that of lower layers. Meanwhile, in the case of layer-1 uplink control information, uplink physical channel resources (e.g., PUCCH, PUSCH) for transmitting it must be configured / allocated (in advance) to the terminal. In this case, from the base station / network's perspective, as the number of terminals / UEs increases, the amount of UL resources that must be allocated to the terminals / UEs may increase, and the overall UL resource overhead burden may increase. Accordingly, in a wireless communication system, information that must be transmitted relatively urgently for the operation of the physical layer, such as SR (e.g., SR for PUSCH allocation), HARQ-ACK (e.g., HARQ-ACK for retransmission), CSI (e.g., CSI for scheduling / MCS / pre-coder determination), and / or beam information (e.g., beam information for (analog) beam determination) can be transmitted as physical layer uplink control information (UCI: Uplink control information). Of these pieces of information, except for SR, the base station / network determines / controls the reporting time of the terminal for the remaining information.In environments where the wireless channel is likely to change rapidly / highly, these network-initiated / triggered reports have limitations in that they require the UE to be configured / instructed to send UCI frequently. For example, in such environments (environments with rapid channel changes), the UL resource overhead for UCI reporting and the related DL measurement RS overhead may increase significantly, and the power consumption of the UE may also increase due to frequent transmission of uplink signals. In addition, as the number of UEs within the cell / TRP coverage increases, the UL resource overhead also increases because UL resources must be allocated to each UE.

[0146] To overcome the limitations of such NW-initiated / triggered reporting, UE-initiated / triggered reporting or event-based / triggered reporting has recently emerged. In UE-initiated / triggered reporting or event-based / triggered reporting, whether or not to report and when can be determined by the UE. For example, the UE can perform reporting such as UCI only when necessary (e.g., only when a specific event occurs). In this case, there is a potential benefit in that the UE can perform rapid reporting to the network because information such as UCI is reported based on Layer-1 (e.g., lower layers) while reducing UL resource overhead and UE power consumption. With the above motivation, standardization of UE-initiated / triggered beam reporting is in progress in a given scenario (NR Rel-19). In addition, in 6G communication systems, UE-initiated / triggered or event-based transmission methods can be actively expanded and applied to transmission methods such as control information, transport blocks, and user-plan data that were previously transmitted using existing UCI and / or MAC-CE for efficient operation of uplink resources.

[0147] Hereinafter, a method for extending the above-described UE-initiated / triggered reporting method to beam reporting will be described in detail. For example, it can be assumed that UE-initiated / triggered CSI reporting is supported for the UE. Even if this new function is supported / introduced, since the purpose of CSI reporting is to transmit necessary information to the UE or instruct the UE's operation by utilizing the information reported by the UE in the Node B / base station / NW (network), the traditional existing CSI reporting instruction method, CSI reporting according to the instruction of the Node B / base station / NW, can also be supported. Therefore, the UE can support both UE-initiated / triggered CSI reporting and CSI reporting according to the instruction of the Node B / base station / NW.

[0148] FIGS. 8 to 12 are diagrams for explaining a UE-initiated / triggered CSI reporting method.

[0149] As described above, when both UE-initiated / triggered CSI reporting and Node B / base station / NW-directed CSI reporting are supported, there may be two methods for triggering CSI reporting in the UE: a method based on the UE's judgment and a method based on the Node B / base station / NW's direction. Therefore, in a situation where the two methods coexist, the UE may repeatedly perform the same or similar CSI reporting, or UE-initiated / triggered CSI reporting may be performed for information that the Node B / base station / NW does not need. In this case, signaling overhead may be wasted, and unnecessary uplink interference may be caused within the cell. Alternatively, CSI reporting directed by the Node B / base station / NW as needed may be delayed or omitted due to UE-initiated / triggered CSI reporting. First of all, from the Node B / base station / NW's perspective, it may be difficult to predict the reception time of a CSI report instructed by a Node B / base station / NW (hereinafter, NW) due to the time it takes for the UE to perform or prepare a UE-initiated / triggered CSI report. To prevent such problems in advance, the UE may perform UE-initiated / triggered CSI reporting only in limited circumstances, or the performance of UE-initiated / triggered CSI reporting may be restricted to specific cases / conditions.

[0150] Such limitations in performing UE-initiated / triggered CSI reporting are described in detail in Scenario 1 and Scenario 2, respectively. For convenience of description, UE-initiated / triggered CSI reporting is defined as UEI CSI reporting, and the case where the UE performs CSI reporting at the direction of the NW is defined as NWI CSI reporting. Here, NWI CSI reporting may refer to CSI reporting instructed / triggered through explicit signaling such as RRC / MAC-CE / DCI of the NW.

[0151] In addition, the operation of the UE performing UEI CSI reporting may be considered as follows. The UE may determine measurement resources for UEI CSI reporting, conditions for triggering UEI CSI reporting, reporting indicators (quantity) of UEI CSI reporting, candidate uplink resources for UEI CSI reporting, etc. based on the configuration of the NW through RRC signaling, etc. (or configuration by prior agreement or consultation). In this case, if the UE satisfies the conditions for triggering UEI CSI reporting, the UE may perform UEI CSI reporting by selecting / determining all or part of the candidate uplink resources. At this time, it may be assumed / assumed that separate reporting configurations are set for UEI CSI reporting and NWI CSI reporting. For example, the UEI CSI reporting configuration and the NWI CSI reporting configuration may refer to the same or different measurement resources, but the UE may expect that separate reporting configuration IDs, etc. will be set for the UEI CSI reporting configuration and the NWI CSI reporting configuration from the NW, respectively. In this case, the UEI CSI reporting configuration may be similar to the NWI CSI reporting configuration in that measurement resources (s), reporting indicators (quantity), codebook types, etc. for channel measurement and / or interference measurement may be set, but there may be differences from the NWI CSI reporting configuration in that measurement indicators, thresholds, trigger conditions, measurement resource valid periods (valid duration, valid time duration, valid time window), etc. may also be set.

[0152] Specifically, FIG. 8 illustrates an example of a UEI CSI reporting operation according to a UEI CSI reporting configuration. Referring to FIG. 8, a UE may perform measurement of a measurement index (quantity) indicated from a NW for configured measurement resources. In this case, the UE may continuously monitor whether a measurement value of the measured measurement index exceeds a threshold configured from the NW by RRC signaling, etc. For example, a trigger condition according to the UEI CSI reporting configuration may be “when a measurement index exceeds the threshold for M (or 3) consecutive measurement resources.” Simultaneously with the satisfaction of the trigger condition, a measurement resource valid duration having a k slot length may be started, and measurement resources existing within the measurement resource valid duration may be used by the UE to derive a UEI CSI report. In addition, after the end of the measurement resource valid duration, the UE may newly start a condition check to determine whether the above-described trigger condition is satisfied.

[0153] Below, based on an understanding of UEI CSI reporting in such examples, Scenario 1 and Scenario 2 are divided into a detailed description of UEI CSI reporting and its operations.

[0154] 1. Scenario 1

[0155] In Scenario 1, a UE that has reported to the NW the capability to perform UEI CSI reporting or supports it may perform UEI CSI reporting by default. However, a UE may not perform UEI CSI reporting under certain conditions.

[0156] In Scenario 1, there must be a common understanding between the UE and the NW regarding the time periods during which the UE performs both UEI CSI reporting and NWI CSI reporting, and the time periods during which the UE performs only UEI CSI reporting or only NWI CSI reporting. This is because different assumptions or different variables / parameters may be applied between the time periods during which the UE performs both UEI CSI reporting and NWI CSI reporting, and the time periods during which the UE performs only UEI CSI reporting (or only NW initiated CSI reporting), in terms of UE CSI reporting operations or calculations to prepare CSI reports.

[0157] Hereinafter, for the convenience of description, the time interval during which the UE performs both UEI CSI reporting and NWI CSI reporting is defined as the first time interval, the time interval during which the UE performs only UEI CSI reporting is defined as the second time interval, and the time interval during which the UE performs only NWI CSI reporting is defined as the third time interval. The UE may make different requirements, assumptions, etc. for CSI reporting for each time interval.

[0158] For example, the minimum required time from the measurement resource to the measurement report for the first time interval, the second time interval, and the third time interval may be applied / configured to be the same or different. This is because the NW cannot know when the UEI CSI report is triggered, so it is necessary to assume that more computation may be required when both UEI CSI reporting and NWI (NW initiated) CSI reporting are performed compared to when only NWI CSI reporting is performed in the UE. The UE may assume different CPU (CSI processing unit) occupancy rules for each time resource or apply different available CPUs for each time resource. Since the UE must always monitor the configured measurement resource to perform UEI CSI reporting, it may be appropriate to assume that some CPUs are occupied for the time intervals in which the UE can perform UEI CSI reporting even if no actual reporting is performed in the UE. For example, considering the reasons described above, the NW may need to distinguish between time intervals in which the UE performs both UEI CSI reporting and NW-initiated CSI reporting (e.g., a first time interval) and time intervals in which it does not (a second time interval and / or a third time interval). The conditions and methods for distinguishing these time intervals are described in detail below, divided into Cases 1 through 3.

[0159] For example, a UE that has reported to the NW, for example, through capability signaling, that it can perform UEI CSI reporting, will basically perform both UEI CSI reporting and NWI CSI reporting, but may not perform UEI CSI reporting or NWI CSI reporting under certain conditions. The UE may apply at least one of Case 1, Case 2, and Case 3 described below in relation to the above-mentioned certain conditions and the operation of the UE.

[0160] (1) Case 1

[0161] In Case 1, a UE capable of performing UEI CSI reporting may perform UEI CSI reporting, but may not perform UEI CSI reporting for specific resource / time intervals as instructed by the NW.

[0162] UEI CSI reporting may mean that the UE performs CSI reporting when a trigger condition set by the NW is satisfied. This may mean that the UE is performing measurement or calculation / estimation on the resources set for UEI CSI reporting. This is a burden for calculation / estimation from the UE's perspective, and the NW may also need to monitor the time / frequency resources on which the UE is expected to transmit UEI CSI reports. In addition, the time / frequency resources set for UEI CSI reporting may be resources on which unexpected interference may occur for the NW. In order to alleviate such burdens on the UE and the NW, a method may be needed to instruct the UE not to perform UEI CSI reporting on some / all of the time / frequency resources set for UEI CSI reporting at the NW's discretion. Such limitations on measurement / reporting in time / frequency resources set for UEI CSI reporting are described in Case 1-1, Case 1-2, and Case 1-3. Individual cases or combinations of cases may be applied to indicate time / frequency resources set for UEI CSI reporting that do not perform UEI CSI reporting.

[0163] In the following, in common, after the UE has been instructed not to perform UEI CSI reporting from the NW, the UE may periodically or aperiodically report to the NW its preferences regarding settings of a time window, measurement resources and / or reporting indicators that indicate the disablement of UEI CSI reporting.

[0164] 1) Case 1-1

[0165] In Case 1-1, the UE may be instructed by the NW to use time / frequency resources for not performing UEI CSI reporting based on a time window. In this case, the UE may not perform UEI CSI reporting within the instructed time window.

[0166] For example, the UE may be instructed of a time window by the NW via signaling such as RRC / MAC-CE / DCI, and may not perform UEI CSI reporting during the instructed time window. For example, the NW may instruct the UE via RRC / MAC-CE / DCI, wherein the time window is defined by a combination of all or part of reference SCS, reference symbol / slot, periodicity, starting slot, starting symbol, duration in slots, and duration in symbols. More specifically, the UE may be instructed of a periodic time window during which UEI CSI reporting is not performed by the NW via RRC signaling. Alternatively, when the UE is instructed of a time window during which UEI CSI reporting is not performed by the NW via MAC-CE, the UE may be instructed of the periodic time window by the NW, and may also be instructed about activation and / or deactivation of the time window. Alternatively, if the UE is instructed to perform a time window from the NW to the DCI during which it does not perform UEI CSI reporting, the time window may be an aperiodic time window.

[0167] Meanwhile, the UE does not perform UEI CSI reporting in the time window instructed by the NW (or, the prohibited time period for UEI CSI reporting), but the following interpretation can be applied to the calculation / output for UEI CSI reporting.

[0168] First, although the UE may perform measurements, calculations and / or outputs for UEI CSI reporting from the start to the end of the time window indicated by the NW, it may determine that only UEI CSI reporting for this is impossible. For example, the UE may determine that the uplink resources for UEI CSI reporting located in the time window indicated by the NW are invalid. In this case, the UE may not apply different timeline requirements, CPU occupation rules, etc. between the time period in which both UEI CSI reporting and NWI CSI reporting are performed and the time period in which UEI CSI reporting is not performed. This is because the UE performs measurements / calculations for UEI CSI reporting even if it does not perform UEI CSI reporting within the indicated time window. This method may be suitable for the purpose of indicating that there is no interference that the NW did not indicate for more active interference management from the NW's perspective.

[0169] Second, the UE may stop the calculation / estimation for UEI CSI reporting that was being performed before the start of the time window indicated by the NW from the start of the time window, and may continue the calculation / estimation after the end of the time window, and may not transmit UEI CSI reporting during the time period indicated by the time window. In this case, the UE may apply different timeline requirements to the first time period in which both UEI CSI reporting and NWI CSI reporting are performed and the third time period in which UEI CSI reporting is not performed, but may not apply different CPU occupation rules. This is because the UE must resume the calculation for UEI CSI reporting after the time window even if it does not perform a new calculation for UEI CSI reporting, and therefore determines that the CPU due to UEI CSI reporting is already occupied. Such a method may be intended to prevent UEI CSI reporting from being performed during a specific time interval for NW interference measurement, while at the same time enabling CSI reporting according to NW's request to be performed more quickly when NWI CSI reporting is instructed during the specific time interval.

[0170] Third, the UE may consider / judge that the time window during which it does not perform UEI CSI reporting as indicated by the NW is excluded from the timeline for performing UEI CSI reporting. For example, in calculating the triggering condition and / or measurement resource validity period described with reference to FIG. 8, the UE may treat the time window during which it does not perform UEI CSI reporting as indicated by the NW as having no time resources (for reporting and / or measurement).

[0171] For example, referring to FIG. 9, a UE may be instructed by a NW to perform a time window during which UEI CSI reporting is not performed, and the time window may be located in the middle of a triggering condition. In this case, as illustrated in FIG. 9, the UE may exclude the time window during which the instructed UEI CSI reporting is not performed from the timeline of UEI CSI reporting. For example, when the trigger condition is that three consecutive (or M, where M is an integer) measurement resources exceed a threshold, the UE may not include n slots instructed in the time window when determining whether the trigger condition is satisfied. In this case, the UE may consider that no measurement resource is configured within the instructed time window, even if a measurement resource is configured within the time window.

[0172] Alternatively, as illustrated in FIG. 10, the indicated time window may be located within the measurement resource validity period. In this case, the UEI CSI report may be configured to apply a measurement resource validity period having a length of k slots from the NW to the UE. In this case, the UE may determine by excluding time windows in which UEI CSI reporting is not performed from the timeline of the UEI CSI report. For example, as illustrated in FIG. 10, the measurement resource validity period actually applied by the UE may have a length of n+k slots. However, the UE may determine that the measurement resources included in the time window do not exist.

[0173] Fourth, the UE may determine that resources for UEI CSI reporting existing within a time window in which UEI CSI reporting is not performed as instructed by the NW are invalid. As illustrated in FIG. 11, when the UE is instructed by the NW to have a time window in which UEI CSI reporting is not performed, the time window may be located in the middle of the triggering conditions. For example, when the trigger condition is that three (or M) consecutive measurement resources exceed a threshold, the n slots indicated in the time window may be determined to be invalid. In this case, the UE may determine that the measurement resources set within the time window are invalid for the triggering conditions even if they exceed the threshold. Accordingly, the UE may determine that the measurement resource validity period or the reporting time period does not start due to the measurement resources located within the time window exceeding the threshold.

[0174] Alternatively, as illustrated in FIG. 12, the time window may be located in a measurement resource validity period. In this case, the UE must apply a measurement resource validity period with a k-slot length according to the UEI CSI reporting configuration set by the NW, but may determine that a measurement resource located in the time window that does not perform UEI CSI reporting in the timeline of UEI CSI reporting is invalid. At this time, the operation of the UE may consider the following two things. First, the UE performs UEI CSI reporting using the remaining resources excluding the invalid measurement resources within the measurement resource validity period. Alternatively, this method may cause ambiguity in UE operation or reduce the reliability of the report. Considering these problems, if the measurement resource validity period includes an invalid measurement resource due to the time window (or, if a certain number of invalid measurement resources exist or more), the UE may not perform UEI CSI reporting for the measurement resource validity period. Alternatively, if an invalid measurement resource is included in the measurement resource validity period due to the above time window, the UE may immediately stop the measurement resource validity period and monitor again whether the triggering condition is satisfied from the time after the invalid measurement resource.

[0175] 2) Case 1-2

[0176] In Case 1-2, the UE may be instructed by the NW not to perform UEI CSI reporting based on resources or reports (or reporting configurations). In this case, the UE may not perform UEI CSI reporting for the instructed resources or reports. For example, the UE may be instructed for specific measurement resource ID(s), specific measurement resource set ID(s), or specific measurement reporting configurations for which UEI CSI reporting is not performed, and may not perform UEI CSI reporting for the specific measurement resource ID(s), specific measurement resource set ID(s), or specific measurement reporting configurations.

[0177] This method of instruction may be appropriate for the NW not to transmit measurement resources that the NW has already configured to the UE by RRC signaling, etc., for the purpose of energy saving, etc., or to instruct not to perform UEI CSI reporting for some resources in order to reduce the computational burden of measurement / monitoring, etc. for UEI CSI reporting of the UE. For example, the UE may be instructed of measurement resource ID(s) or measurement resource set ID(s) by signaling, such as MAC-CE / DCI, from the NW, and may determine that the instructed measurement resources are excluded from the reporting configuration for performing UEI CSI reporting. Alternatively, the UE may not perform UEI CSI reporting (or UEI CSI reporting configuration) referencing the measurement resource ID(s) or measurement resource set ID(s) instructed by signaling, such as MAC-CE / DCI, from the NW. Alternatively, the UE may be instructed by the NW via signaling such as MAC-CE / DCI to specify some of the reporting configuration IDs for UEI CSI reporting that have been previously configured via RRC, and may not perform UEI CSI reporting corresponding to some of the instructed reporting configuration(s). For example, the UE may determine / consider that the reporting configuration(s) indicated by the reporting configuration ID(s) are no longer valid.

[0178] Alternatively, the UE may be instructed of a time window by signaling such as RRC / MAC-CE / DCI from the NW, and the UE may not perform UEI CSI reporting for a measurement resource / measurement resource set that is included in whole or in part in the instructed time window, or for a UEI CSI reporting configuration that refers to the measurement resource. Such time window indication may be instructed to the UE by RRC / MAC-CE / DCI through a combination of all or part of reference SCS, reference symbol / slot, periodicity, starting slot, starting symbol, duration in slots, and duration in symbols.

[0179] Alternatively, the UE may receive information about measurement resource ID(s) or measurement resource set ID(s) from the NW through signaling such as MAC-CE / DCI, and may be instructed to activate or deactivate the measurement resource ID(s) or measurement resource set ID(s). In this case, if deactivation of the measurement resource ID or the measurement resource set ID is instructed, the UE may determine that the measurement resource ID or the measurement resource set ID is excluded from the UEI CSI reporting configuration until an activation instruction for the measurement resource ID or the measurement resource set ID is received. Alternatively, the UE may receive deactivation for the measurement resource ID(s) or measurement resource set ID(s) indicated by signaling such as MAC-CE / DCI from the NW. In this case, the UE may not perform UEI CSI reporting referencing the measurement resource ID or measurement resource set ID(s) until an activation instruction for the deactivated measurement resource ID or measurement resource set ID is received. Alternatively, the UE may receive information about some of the reporting configuration IDs for UEI CSI reporting previously configured by RRC from the NW, and indications of activation / deactivation for said some of them via signaling such as MAC-CE / DCI. In this case, the UE may not perform UEI CSI reporting for said some of them until an indication of activation for said some of them is received.

[0180] 3) Case 1-3

[0181] In Case 1-3, the UE may be instructed by the NW not to perform UEI CSI reporting based on a reporting metric (quantity), and may not perform UEI CSI reporting for the instructed reporting metric (quantity).

[0182] In existing 5G NR, CSI reporting could be categorized by reporting indicators according to purpose. For example, L1-RSRP and L1-SINR are used for beam measurement, while CQI / PMI / LI / RI are used for CQI acquisition for MCS selection of PDSCH scheduled by the gNB. For example, the purpose of a CSI report can be inferred from the reporting indicator. Considering this, the UE can be instructed by the NW to perform specific reporting indicators for which UEI CSI reporting will not be performed, and UEI CSI reporting can be omitted for these specific reporting indicators.

[0183] For example, the UE may be instructed by the NW to perform specific reporting indicator(s) (e.g., MAC-CE / DCI) signaling (not to perform UEI CSI reporting from the NW), and may not perform UEI CSI reporting for the specific reporting indicator(s). Alternatively, the NW may be instructed to enable / disable specific reporting indicator(s) signaling (e.g., MAC-CE / DCI). In this case, the UE may not perform UEI CSI reporting for the specific reporting indicator(s) until an indication of enablement for the specific reporting indicator(s) is received.

[0184] (2) Case 2

[0185] In case 2, a UE capable of performing UEI CSI reporting may perform UEI CSI reporting by default, but may not perform UEI CSI reporting by requesting the NW not to perform UEI CSI reporting. For example, in case 2, the UE may request the NW to deactivate a specific UEI CSI report, a specific UEI CSI reporting configuration, a specific UEI CSI measurement resource, and / or a specific UEI CSI measurement resource set. In this case, the UE may not perform UEI CSI reporting for the specific UEI CSI report, the specific UEI CSI reporting configuration, the specific UEI CSI measurement resource, and / or the specific UEI CSI measurement resource set immediately upon the request or upon receiving confirmation information for the request.

[0186] For example, a UE may perform both UEI CSI reporting and NWI CSI reporting, but may request the NW not to perform specific UEI CSI reporting through signaling such as MAC-CE / UCI, and may not perform the specific UEI CSI reporting through the request.

[0187] For example, the UE must continuously perform measurements on the configured measurement resources for UEI CSI reports configured from the NW, and continuously perform calculations / calculations / measurements to determine whether the trigger conditions of the UEI CSI report are satisfied. However, since the UE knows the channel environment changes of the UE better than the NW, it may be appropriate for the UE to directly request the NW not to perform a specific UEI CSI report in order to reduce unnecessary measurements and calculations / calculations for UEI CSI reporting. At least one of the methods of Case 2-1, Case 2-2, and Case 2-3 described below may be applied as a method for requesting not to perform UEI CSI reporting of the UE or deactivation of UEI CSI reporting. Meanwhile, signaling requesting the NW not to perform UEI CSI reporting of the UE based on the configuration information configured to perform UEI CSI reporting from the NW may be commonly applied to Case 2-1, Case 2-2, and Case 2-3 described below.

[0188] 1) Case 2-1

[0189] In Case 2-1, the UE reports to the NW that it will not perform UEI CSI reporting based on a time window, and upon confirmation by the NW, the UE may not perform UEI CSI reporting in the reported time window. For example, the UE may report to the NW information about the time windows during which UEI CSI reporting will not be performed.

[0190] Such a time window-based request can be performed through a combination of all or part of reference SCS, reference symbol / slot, periodicity, starting slot, starting symbol, duration in slots, and duration in symbols. More specifically, if the UE requests a time window during which UEI CSI reporting is not performed to the NW via MAC-CE, it may be a request for a periodic time window, and if the UE requests a time window during which UEI CSI reporting is not performed to the NW via UCI, it may be a request for an aperiodic time window.

[0191] The NW may instruct the UE to respond to a request from the UE not to perform UEI CSI reporting. In this case, to reduce unnecessary (repeated) signaling by the UE, the UE may determine that it cannot make (additional) requests not to perform UEI CSI reporting for a certain period of time from the time of receiving the NW's response.

[0192] And / or, the NW may perform a response such as confirming the request of the UE. In this case, if the UE receives the confirmation of the request from the NW, the UE may not perform UEI CSI reporting for the time window transmitted by the UE. In this case, the specific operation of the UE for the time window may be based on the case 1-1 described above. For example, if the UE receives a confirmation signal from the NW for a time window in which the UE does not perform the UEI CSI reporting requested from the NW, the UE may not perform UEI CSI reporting, but may consider / judge the calculation / production for UEI CSI reporting as follows.

[0193] First, the UE may perform measurements, calculations, and / or outputs for UEI CSI reporting from the start to the end of the time window reported to the NW, but may determine that only UEI CSI reporting for this is impossible. For example, the UE may determine that the uplink resources for UEI CSI reporting located in the time window reported to the NW are invalid. In this case, the UE may not apply different timeline requirements, CPU occupation rules, etc. between the time period in which both UEI CSI reporting and NWI CSI reporting are performed and the time period in which UEI CSI reporting is not performed. This is because the UE performs calculations for UEI CSI reporting even if it does not perform UEI CSI reporting within the time window reported by the UE. This method may be suitable for the purpose of indicating that there is no interference that the NW did not indicate, for more active interference management from the NW's perspective.

[0194] Second, the UE may stop the calculation for UEI CSI reporting that was being performed before the start of the time window reported to the NW from the start of the time window and resume such calculation / calculation after the end of the time window, and may not transmit UEI CSI reporting during the time period indicated by the time window. In this case, the UE may apply different timeline requirements to the first time period in which both UEI CSI reporting and NWI CSI reporting are performed and the third time period in which UEI CSI reporting is not performed, but may not apply different CPU occupation rules. This is because the UE must resume the calculation for UEI CSI reporting after the time window even if it does not perform a new calculation for UEI CSI reporting, and therefore determines that the CPU due to UEI CSI reporting is already occupied. Such a method may be intended to prevent UEI CSI reporting from being performed during a specific time interval for interference measurement of the NW, while at the same time enabling CSI reporting according to the NW's request to be performed more quickly when NWI CSI reporting is instructed during the specific time interval.

[0195] Third, the UE may consider / judge that the time window during which it does not perform the UEI CSI report reported to the NW is excluded from the timeline for performing UEI CSI reporting. For example, in calculating the triggering condition and / or the measurement resource validity period described with reference to FIG. 8, the UE may treat the indicated time resource as not existing in the time window during which it does not perform the reported UEI CSI report.

[0196] For example, referring to FIG. 9, a UE may report a time window during which it does not perform UEI CSI reporting to the NW, and the time window may be located in the middle of a triggering condition. In this case, as illustrated in FIG. 9, the UE may exclude the time window during which it does not perform UEI CSI reporting from the timeline of the UEI CSI reporting. For example, when the trigger condition is that three (or M) consecutive measurement resources exceed a threshold, the UE may not include n slots indicated in the time window when determining whether the trigger condition is satisfied. In this case, the UE may consider that no measurement resource is configured within the reported time window, even if a measurement resource is configured within the time window.

[0197] Alternatively, as illustrated in FIG. 10, the time window reported to the NW may be located within the measurement resource validity period. In this case, the UEI CSI report may be configured to apply a measurement resource validity period with a length of k slots from the NW to the UE. In this case, the UE may determine by excluding time windows for which UEI CSI reporting is not performed from the timeline of the UEI CSI report. For example, as illustrated in FIG. 10, the measurement resource validity period actually applied by the UE may have a length of n+k slots. However, the UE may determine that the measurement resources included in the time window do not exist.

[0198] Fourth, the UE may determine that the measurement resources for UEI CSI reporting that exist within a time window in which UEI CSI reporting is not performed are invalid. As illustrated in FIG. 11, when the UE reports a time window in which UEI CSI reporting is not performed to the NW, the time window may be located in the middle of the triggering conditions. For example, when three (or M) consecutive measurement resources exceed the threshold for the triggering condition, the n slots indicated in the time window may be determined to be invalid. In this case, the UE may determine that the measurement resources set within the time window are invalid for the triggering conditions even if they exceed the threshold. Accordingly, the UE may determine that the measurement resource validity period or the reporting time period does not start due to the measurement resources located within the time window exceeding the threshold.

[0199] Alternatively, as illustrated in FIG. 12, the time window may be located in a measurement resource validity period. In this case, the UE must apply a measurement resource validity period with a k-slot length according to the UEI CSI reporting configuration set by the NW, but may determine that a measurement resource located in the time window, which does not perform UEI CSI reporting in the timeline of UEI CSI reporting, is invalid. At this time, the operation of the UE may consider the following two things. First, the UE performs UEI CSI reporting using the remaining resources excluding the invalid measurement resources within the measurement resource validity period. Alternatively, this method may cause ambiguity in UE operation or reduce the reliability of the report. Considering these problems, if the measurement resource validity period includes an invalid measurement resource due to the time window (or, if a certain number of invalid measurement resources exist or more), the UE may not perform UEI CSI reporting for the measurement resource validity period. Alternatively, if an invalid measurement resource is included in the measurement resource validity period due to the above time window, the UE may immediately stop the measurement resource validity period and monitor again whether the triggering condition is satisfied from the time after the invalid measurement resource.

[0200] 2) Case 2-2

[0201] In case 2-2, the UE may request the NW not to perform UEI CSI reporting based on measurement resource ID(s) or measurement resource set ID(s).

[0202] The UE may receive a response from the NW confirming the request of the UE not to perform UEI CSI reporting. In this case, the UE may not perform UEI CSI reporting for the measurement resource ID(s) or measurement resource set ID(s) if the NW confirms the request. If the UE receives a response from the NW to the reception of the request of the UE, the UE may determine that it cannot make an (additional) request not to perform UEI CSI reporting for a certain period of time from the time of receiving the response from the NW, in order to reduce unnecessary (repeated) signaling of the UE. In this case, the specific operation of the UE for the measurement resource ID(s) or measurement resource set ID(s) may be based on the above-described cases 1-2.

[0203] For example, the UE may report measurement resource ID(s) or measurement resource set ID(s) to the NW by signaling such as MAC-CE / UCI. In this case, the UE may determine that the measurement resource ID(s) or measurement resource set ID(s) are excluded from the reporting configuration for performing UEI CSI reporting. Alternatively, the UE may not perform UEI CSI reporting for UEI CSI reporting configurations that refer to the measurement resource ID(s) or measurement resource set ID(s) reported to the NW by signaling such as MAC-CE / UCI. Alternatively, the UE may report to the NW a specific reporting configuration ID among reporting configuration IDs for UEI CSI reporting that have been previously configured by RRC from the NW by signaling such as MAC-CE / UCI. In this case, the UE may not perform UEI CSI reporting corresponding to the specific reporting configuration ID. For example, the UE may determine that the reporting configuration(s) corresponding to the reported reporting configuration ID(s) are no longer valid.

[0204] Alternatively, the UE reports a time window by signaling such as RRC / MAC-CE / UCI, and does not perform UEI CSI reporting for a measurement resource / measurement resource set that is included in whole or in part in the reported time window or a UEI CSI reporting configuration that refers to the measurement resource / measurement resource set. Such reporting of a time window can be reported to the NW by RRC / MAC-CE / UCI through a combination of all or part of reference SCS, reference symbol / slot, periodicity, starting slot, starting symbol, duration in slots, and duration in symbols.

[0205] Alternatively, the UE may report to the NW information about measurement resource ID(s) or measurement resource set ID(s), and activation or deactivation of the measurement resource ID(s) or measurement resource set ID(s) by signaling such as MAC-CE / UCI. In this case, if deactivation of the measurement resource ID or the measurement resource set is reported, the UE may determine that the measurement resource ID or the measurement resource set is excluded from the UEI CSI reporting configuration until it reports activation of the measurement resource ID or the measurement resource set. Alternatively, the UE may report to the NW information about deactivation of the measurement resource ID(s) or measurement resource set ID(s) by signaling such as MAC-CE / UCI. In this case, the UE may not perform UEI CSI reporting for the UEI CSI reporting configurations referencing the measurement resource ID or measurement resource set ID(s) until it performs a report of activation for the deactivated measurement resource ID or measurement resource set ID. Alternatively, the UE may report to the NW some of the reporting configuration IDs for UEI CSI reporting that have been previously set by RRC from the NW and activation / deactivation for the some of the reporting configuration IDs through signaling such as MAC-CE / UCI, and may not perform the corresponding UEI CSI reporting until it reports / transmits activation for the reported reporting configuration(s).

[0206] 3) Case 2-3

[0207] In Case 2-3, the UE can request the NW not to perform UEI CSI reporting based on the reporting indicator(s). In the existing 5G NR, CSI reports can be classified by purpose using reporting indicators. For example, L1-RSRP and L1-SINR are for beam measurement purposes, and CQI / PMI / LI / RI are for CQI acquisition for MCS selection of PDSCH scheduled by the gNB. For example, the purpose of CSI reporting can be inferred from the reporting indicator. Considering this, the UE can report to the NW specific reporting indicators for which UEI CSI reporting will not be performed, and UEI CSI reporting can not be performed for the specific reporting indicators.

[0208] For example, the UE may report specific reporting indicator(s) to the NW via signaling such as MAC-CE / UCI, and may not perform UEI CSI reporting for the specific reporting indicator(s). Alternatively, the UE may report the activation / inactivity of specific reporting indicator(s) to the NW via signaling such as MAC-CE / UCI. In this case, the UE may not perform UEI CSI reporting for the specific reporting indicator(s) until it transmits a report of activation for the specific reporting indicator(s).

[0209] (3) Case 3

[0210] In Case 3, a UE capable of performing UEI CSI reporting performs UEI CSI reporting by default, but the UE may not perform UEI CSI reporting for certain resources based on prior agreement or agreement.

[0211] For example, a UE may perform both UEI CSI reporting and NWI CSI reporting, but may not perform UEI CSI reporting on certain resources based on prior commitment or agreement (or specific behavior of the UE or NW) rather than explicit instructions / requests.

[0212] Case 3, as described below, can reduce unnecessary computational and signaling overhead of the UE in cases where there is a high probability that UEI CSI reports and NWI CSI reports contain overlapping information, and can also be highly effective in reducing unnecessary interference to the NW. For this purpose, a prior agreement or contract and the corresponding UE actions can be performed by applying at least one of Cases 3-1, 3-2, and 3-3 described below.

[0213] 1) Case 3-1

[0214] In Case 3-1, the UE may not perform UEI CSI reporting for a certain period of time after transmitting a specific NWI CSI report according to a prior agreement.

[0215] For example, the UE may not perform NWI CSI reporting or UEI CSI reporting for a specific time duration after transmitting an NWI CSI report. Alternatively, the UE may not perform UEI CSI reporting for a UEI CSI reporting configuration that refers to a measurement resource of the NWI CSI report for the specific time duration after transmitting an NWI CSI report. Alternatively, the UE may not perform UEI CSI reporting for which a reporting indicator is set equal to the reporting indicator of the NWI CSI report for the specific time duration after transmitting an NWI CSI report. Alternatively, the UE may not perform UEI CSI reporting for a UEI CSI reporting configuration that refers to a measurement resource of the NWI CSI report and indicates / reports the same reporting indicator for the specific time duration after transmitting an NWI CSI report.

[0216] In such examples, the application of specific time intervals during which the UE does not perform UEI CSI reporting may consider the following. For example, the UE may consider / judge that it is instructed not to perform measurement / processing / reporting for UEI CSI reporting for the time intervals of slot level offset and / or symbol level offset, slot level duration and / or symbol level duration from the time resource through which the NWI CSI report was transmitted.

[0217] 2) Case 3-2

[0218] In case 3-2, the UE may not perform UEI CSI reporting depending on the reporting settings for NWI CSI reporting received from the NW.

[0219] For example, the UE may determine that the UE has been configured not to perform UEI CSI reporting for a UEI CSI reporting configuration that has the same reporting indicator as the reporting configuration for NWI CSI reporting configured by the NW. Alternatively, the UE may determine that the UE has been configured not to perform UEI CSI reporting for a UEI CSI reporting configuration that has the same reporting indicator as the reporting configuration for NWI CSI reporting configured by the NW and has the same measurement resource or set of measurement resources in whole or in part. In this case, the UE may determine that the UE has been configured not to perform the UEI CSI reporting until the reporting configuration for NWI CSI reporting is released, deactivated, or becomes invalid.

[0220] This method can activate NWI CSI reporting while disabling UEI CSI reporting, which had a similar function, through the configuration for NWI CSI reporting. For example, the reporting configuration for UEI CSI reporting can be configured only with RRC signaling, and NWI CSI reporting can be configured / instructed by signaling of MAC-CE / DCI. In this case, if the method of Case 3-2 is not applied, the NW must perform RRC update and MAC-CE / DCI signaling at the same time, but if Case 3-2 is applied, this function (e.g., activating NWI CSI reporting while disabling UEI CSI reporting) can be performed with a single signaling. For example, NWI CSI reporting can be activated while disabling CSI reporting for beam measurement, which is configured as UEI CSI reporting, through the configuration signaling for NWI CSI reporting for beam measurement.

[0221] 3) Case 3-3

[0222] In case 3-3, the UE may not perform UEI CSI reporting for specific time or frequency resources indicated by the NW.

[0223] For example, a UE may be configured by a NW with distinct time resources / time intervals for the NW's operations or for the operations of other UEs that are unrelated to the UE's operations. For example, there may be a time interval during which the NW performs full duplex operation and a time interval during which full duplex operation is not performed, or a time interval during which some of the UEs served by the NW perform full duplex operation and a time interval during which full duplex operation is not performed, or a time interval during which all or some nodes within the NW (e.g., a group of UEs, a serving NW, a non-serving NW, etc.) may perform transmission and / or measurement for integrated sensing and communication (ISAC) and a time interval during which ISAC operation is prohibited. In this way, the NW's indication of distinct time intervals may result in different channel environments and may also have different importance levels of interference measurements. Therefore, it may be necessary to restrict UEI CSI reporting of the UE for the distinct time intervals indicated in this way. For example, in a given scenario (3GPP Rel-19), it was agreed that the UE would receive explicit signaling from the gNB about the time periods during which the gNB performs subband full duplex (SBFD) operation and the time periods during which the gNB does not perform SBFD operation.

[0224] Alternatively, the UE may be configured with multiple activated frequency resources (e.g., BWPs) from the NW, which is different from the conventional case, and may determine that a specific BWP is instructed not to perform UEI CSI reporting. For example, the UE may be configured with a BWP targeting a high data rate, a BWP targeting low latency, etc. Alternatively, the UE may be configured with a BWP that receives service from the NW (e.g., performs DL / UL transmission / reception) and a BWP of a candidate NW that can perform handover in the future with instructions such as MAC-CE / DCI.

[0225] In the above-described manner, the UE may receive separate time / frequency resource instructions from the NW, and may determine that it has been instructed not to perform UEI CSI reporting for specific time / frequency resources. For example, the UE may consider / determine that it has been instructed to perform NWI CSI reporting and UEI CSI reporting on time resources in which the NW does not perform full duplex operation among the time resources instructed by the NW, but not to perform UEI CSI reporting on time resources in which the NW performs full duplex operation.

[0226] 4) Case 3-4

[0227] In case 3-4, the UE may not perform UEI CSI reporting depending on the current CPU occupancy conditions.

[0228] For example, the UE does not perform UEI CSI reporting if the CPU occupation due to UEI CSI reporting is greater than or equal to a value determined by a prior agreement or configuration or a value set by the NW. Alternatively, the UE does not perform UEI CSI reporting if the total CPU occupation due to UEI CSI reporting and NWI CSI reporting is greater than or equal to a value determined by a prior agreement or configuration or a value set by the NW. This method can alleviate the burden of complexity due to excessive CPU occupation of UEI CSI reporting or facilitate energy saving of the UE.

[0229] The methods described in Scenario 1 above for a UE not to perform UEI CSI reporting (e.g., not performing UEI CSI reporting for specific resources / time windows / reporting metrics indicated or requested) can be simply extended to allow a UE to instruct or request not to perform specific NWI CSI reporting. This may be appropriate given that information in UEI CSI reporting is more important than information in NWI CSI reporting, as the UE is the subject of CSI reporting and can easily identify CSI change information.

[0230] 2. Scenario 2

[0231] In Scenario 2, a UE that has reported to the NW the capability to perform UEI CSI reporting or has such capability may not perform UEI CSI reporting by default, and may perform UEI CSI reporting under certain conditions.

[0232] For example, a UE capable of performing UEI CSI reporting will perform NWI CSI reporting by default, but may perform both UEI CSI reporting and NWI CSI reporting under certain conditions. This may be appropriate, considering that the NW is typically the trigger for CSI reporting and the NW requires CSI information. In particular, UEI CSI reporting is appropriate because it can transmit low-latency, non-outdated CSI information in appropriate environments, but can require unnecessary computational complexity on the UE and cause network interference in inappropriate environments.

[0233] In order for the NW and the UE to have the same understanding of the time intervals in which the UE performs both UEI CSI reporting and NWI CSI reporting, and the time intervals in which the UE performs only NWI CSI reporting or only UEI CSI reporting, for reasons described in Scenario 1, the conditions for distinguishing the time intervals are described in detail by dividing the cases as follows.

[0234] (1) Case 1

[0235] In Case 1, a UE capable of performing UEI CSI reporting may not perform UEI CSI reporting by default even if it has received a configuration for UEI CSI reporting. In this case, the UE may perform UEI CSI reporting for specific resources as instructed by the NW.

[0236] For example, UEI CSI reporting may be performed when a trigger condition set by the NW is satisfied from the UE's perspective. This may mean that the UE is performing measurement or calculation / calculation on resources set for UEI CSI reporting, which is a burden for calculation / calculation from the UE's perspective, and the NW must also monitor time / frequency resources where the UE is expected to transmit UEI CSI reports, and such time / frequency resources are resources where interference that the NW does not expect may occur. In order to reduce the burden on the UE and the NW, a method is required for instructing the UE not to perform UEI CSI reporting at the NW's discretion. The detailed method is described by dividing it into Case 1-1, Case 1-2, and Case 1-3, and the method for the UE to perform UEI CSI reporting can be instructed by applying individual cases or a combination of cases.

[0237] 1) Case 1-1

[0238] In case 1-1, the UE is instructed by the NW to perform UEI CSI reporting based on a time window, and the UE can perform UEI CSI reporting in the instructed time window.

[0239] For example, the UE may be instructed of a time window by the NW via signaling such as RRC / MAC-CE / DCI, and may perform UEI CSI reporting during the instructed time window. The time window may be instructed by the NW via RRC / MAC-CE / DCI through a combination of all or part of a reference SCS, a reference symbol / slot, a periodicity, a starting slot, a starting symbol, a duration in slots, and a duration in symbols. More specifically, the UE may be instructed of a periodic time window during which UEI CSI reporting is not performed by the NW via RRC signaling. Alternatively, when the UE is instructed of a time window during which UEI CSI reporting is not performed by the NW via MAC-CE, the UE may be instructed of a periodic time window by the NW, and may also be instructed of activation and / or deactivation of the time window. Alternatively, if the UE is instructed to a time window during which it does not perform UEI CSI reporting from the NW to the DCI, the UE may be instructed to an aperiodic time window.

[0240] The UE performs UEI CSI reporting for a time window, which is the execution time period of UEI CSI reporting indicated from the NW, and the following interpretation can be applied to the calculation / output for UEI CSI reporting.

[0241] The UE can perform measurements, calculations / outputs, etc. for UEI CSI reporting regardless of the time window indicated by the NW, but may determine that transmission of UEI CSI reporting is possible only within the indicated time window. For example, the UE may determine that UEI CSI reporting is valid only for uplink resources for UEI CSI reporting located in the time window indicated by the NW. For example, the UE may not apply different timeline requirements, CPU occupation rules, etc. to the time intervals during which both UEI CSI reporting and NWI CSI reporting are performed and the time intervals during which UEI CSI reporting is not performed. This is natural because the UE does not perform UEI CSI reporting outside the indicated time window, but performs calculations for UEI CSI reporting. This method may be suitable for the purpose of indicating that there is no interference that the NW did not indicate, in order to perform more active interference measurements from the NW's perspective.

[0242] 2) Case 1-2

[0243] In Case 1-2, the UE is instructed by the NW to perform UEI CSI reporting based on resources or reports, and can perform UEI CSI reporting for the instructed resources or reports.

[0244] This method of instruction may be appropriate when the NW actively monitors changes in the channel environment of the UE and requires reporting. For example, the UE may determine that it has been instructed by the NW to perform UEI CSI reporting configurations that refer to the instructed measurement resource ID(s) or measurement resource set ID(s) through signaling such as MAC-CE / DCI, etc., and to perform the instructed measurement resource ID(s) or measurement resource set ID(s). Alternatively, the UE may be instructed by the NW to perform some of the reporting configuration IDs for UEI CSI reporting that have been previously configured by RRC through signaling such as MAC-CE / DCI, and to perform UEI CSI reporting corresponding to some of the instructed reporting configuration(s). For example, the UE may determine that only the reporting configuration(s) corresponding to some of the instructed reporting configuration ID(s) are valid reporting configurations for UEI CSI reporting.

[0245] Alternatively, the UE may be instructed of a time window by signaling such as RRC / MAC-CE / DCI from the NW, and perform UEI CSI reporting for measurement resources that are included in whole or in part in the time window, or for UEI CSI reporting configurations that refer to such measurement resources. This time window may be indicated by a combination of all or part of a reference SCS, a reference symbol / slot, a periodicity, a starting slot, a starting symbol, a duration in slots, and a duration in symbols.

[0246] Alternatively, the UE may be instructed by the NW to activate or deactivate measurement resource ID(s) or measurement resource set ID(s) through signaling such as MAC-CE / DCI. In this case, the UE may determine that the measurement resource ID(s) or measurement resource set ID(s) for which deactivation has been instructed are excluded from the UEI CSI reporting configuration until an activation instruction is received. Alternatively, if the UE receives deactivation for the measurement resource ID(s) or measurement resource set ID(s) indicated by signaling such as MAC-CE / DCI from the NW, the UE may not perform UEI CSI reporting for the UEI CSI reporting configuration referencing the measurement resource ID(s) or measurement resource set ID(s) until an activation instruction is received. Alternatively, the UE may be instructed by signaling such as MAC-CE / DCI to activate / deactivate some of the reporting configuration IDs for UEI CSI reporting that have been previously set to RRC by the NW, and may not perform the UEI CSI reporting until an activation instruction is received for the UEI CSI reporting corresponding to the instructed reporting configuration(s).

[0247] 3) Case 1-3

[0248] In Case 1-3, the UE may be instructed by the NW to perform UEI CSI reporting based on a reporting indicator, and may perform UEI CSI reporting for the instructed reporting indicator.

[0249] In existing 5G NR, CSI reporting could be categorized by reporting indicators based on purpose. For example, L1-RSRP and L1-SINR are used for beam measurement, while CQI / PMI / LI / RI are used to acquire CQI for MCS selection of PDSCHs scheduled by the gNB. For example, the purpose of a CSI report can be inferred from the reporting indicator. Under this context, it is possible to consider a UE receiving specific reporting indicators from the NW and performing UEI CSI reporting based on the indicated reporting indicators.

[0250] For example, the UE may be instructed to report indicator(s) by signaling such as MAC-CE / DCI from the NW, and perform UEI CSI reporting for the instructed reporting indicator(s). Alternatively, the UE may be instructed to report indicator(s) and activation / deactivation thereof by signaling such as MAC-CE / DCI from the NW, and when activation is received for the instructed reporting indicator(s), the UE may perform UEI CSI reporting for the corresponding reporting indicator(s) until deactivation is received.

[0251] (2) Case 2

[0252] In case 2, a UE capable of performing UEI CSI reporting may not perform UEI CSI reporting by default even if a setting for UEI CSI reporting is received, and when requesting the NW to perform UEI CSI reporting, UEI CSI reporting may be performed according to the setting.

[0253] For example, the UE performs all NWI CSI reporting, but for UEI CSI reporting, it can perform UEI CSI reporting when requesting performance of the UEI CSI reporting through signaling such as MAC-CE / UCI. For example, the UE must continuously perform measurements on the configured measurement resources for UEI CSI reporting configured from the NW, and must also continuously perform calculations / outputs to determine whether the trigger conditions of the UEI CSI reporting are satisfied. However, since the UE knows the channel environment changes better than the NW, the UE can better identify cases where UEI CSI reporting is needed than the NW, and therefore, a situation in which the UE requests to perform such UEI CSI reporting may be appropriate. In this way, at least one of the methods of Case 2-1, Case 2-2, and Case 2-3 described below may be applied to the method for the UE to request performance of UEI CSI reporting.

[0254] 1) Case 2-1

[0255] In case 2-1, the UE reports to the NW that it performs UEI CSI reporting based on a time window, and can perform UEI CSI reporting in the reported time window upon confirmation by the NW.

[0256] The request for such a time window may be a combination of all or part of the reference SCS, reference symbol / slot, periodicity, starting slot, starting symbol, duration in slots, and duration in symbols that the UE may report to the NW via MAC-CE / UCI. More specifically, when the UE requests a time window for performing UEI CSI reporting to the NW via MAC-CE, it may be considered to be requesting a periodic time window, and when the UE requests a time window for performing UEI CSI reporting to the NW via UCI, it may be considered to be requesting an aperiodic time window.

[0257] The NW may instruct / respond to the UE's request to perform UEI CSI reporting in response to such UE's request. In this case, the UE may determine that it cannot report / instruct the NW to perform (additional) UEI CSI reporting for a certain period of time from the time the NW's response is received, in order to reduce unnecessary signaling by the UE.

[0258] Alternatively, a case may be considered where the NW performs a response to the UE's request for performing UEI CSI reporting. In this case, the UE may perform UEI CSI reporting for the time window transmitted by the UE when the NW's response to the request for performing the UEI CSI reporting is received. In this case, the time window for which the UE's UEI CSI reporting is requested and the understanding thereof may be based on the above-described case 1-1. For example, the UE performs UEI CSI reporting when a confirmation signal is received from the NW for the time window for performing the requested UEI CSI reporting, but the following interpretation may be applied to the calculation / output for the UEI CSI reporting.

[0259] The UE can perform measurements / calculations / outputs for UEI CSI reporting regardless of the reported time window, but may determine that only transmission of the corresponding UEI CSI report is possible within the time window. For example, the UE may determine that only uplink resources for UEI CSI reporting located in the reported time window are valid. For example, the UE may not apply different timeline requirements, CPU occupation rules, etc. to the time intervals in which both UEI CSI reporting and NWI CSI reporting are performed and the time intervals in which UEI CSI reporting is not performed. This may be appropriate in that even if the UE performs UEI CSI reporting only within the reported time window, the UE performs calculations / measurements for UEI CSI reporting for other time intervals as well. Such a method may be suitable for the purpose of indicating that there is no interference that the NW did not indicate in order to perform more active interference measurement from the NW's perspective.

[0260] 2) Case 2-2

[0261] In Case 2-2, the UE may request the NW to perform UEI CSI reporting based on measurement resource ID(s) or measurement resource set ID(s). In this case, when the NW receives the request for UEI CSI reporting from the UE, it may transmit a response confirming the request to the UE. In this case, the UE may perform UEI CSI reporting for the measurement resource ID(s) or measurement resource set ID(s) requested by the UE if the NW confirms the request.

[0262] When the UE receives a response from the NW regarding the reception of the UE's request, in order to reduce unnecessary (repeated) signaling of the UE, the UE may determine that it cannot make (additional) requests for UEI CSI reporting for a certain period of time from the time of receiving the NW's response. In this case, the specific operation of the UE with respect to the measurement resource ID(s) or measurement resource set ID(s) may be based on the above-described cases 1-2.

[0263] For example, the UE can report measurement resource ID(s) or measurement resource set ID(s) to the NW by signaling such as MAC-CE / UCI. In this case, the UE can determine that performance of UEI CSI reporting for the measurement resource ID(s) or measurement resource set ID(s) is instructed. Alternatively, the UE can perform reporting according to UEI CSI reporting configurations that refer to the measurement resource ID(s) or measurement resource set ID(s) reported to the NW by signaling such as MAC-CE / UCI. Alternatively, the UE can report to the NW a specific reporting configuration ID among reporting configuration IDs for UEI CSI reporting previously set by RRC from the NW by signaling such as MAC-CE / UCI. In this case, the UE can perform UEI CSI reporting corresponding to the specific reporting configuration ID. That is, the UE can determine that the reporting configuration(s) corresponding to the reported reporting configuration ID(s) are valid.

[0264] Alternatively, the UE may report a time window by signaling such as RRC / MAC-CE / UCI, and perform UEI CSI reporting for a measurement resource / measurement resource set that is included in whole or in part in the reported time window, or for UEI CSI reporting that refers to the measurement resource / measurement resource set. Such a time window may be reported to the NW by RRC / MAC-CE / UCI through a combination of all or part of reference SCS, reference symbol / slot, periodicity, starting slot, starting symbol, duration in slots, and duration in symbols.

[0265] Alternatively, the UE may report to the NW information about measurement resource ID(s) or measurement resource set ID(s), and activation or deactivation of the measurement resource ID(s) or measurement resource set ID(s) by signaling such as MAC-CE / UCI. In this case, if deactivation of the measurement resource ID or the measurement resource set is reported, the UE may determine that the measurement resource ID or the measurement resource set is excluded from the UEI CSI reporting configuration until it reports activation of the measurement resource ID or the measurement resource set. Alternatively, the UE may report deactivation information of the measurement resource ID(s) or measurement resource set ID(s) to the NW by signaling such as MAC-CE / UCI. In this case, the UE may not perform UEI CSI reporting referencing the measurement resource ID or measurement resource set ID(s) until it reports activation of the deactivated measurement resource ID or measurement resource set ID. Alternatively, the UE may report to the NW some of the reporting configuration IDs for UEI CSI reporting that have been previously set by RRC from the NW and the activation / inactivity of said some of them through signaling such as MAC-CE / UCI, and may not perform the corresponding UEI CSI reporting until reporting / transmitting the activation for the reported reporting configuration(s).

[0266] 3) Case 2-3

[0267] In case 2-3, the UE may request the NW to perform UEI CSI reporting based on the reporting indicator(s).

[0268] In existing 5G NR, CSI reports could be categorized by purpose. For example, L1-RSRP and L1-SINR are used for beam measurement, while CQI / PMI / LI / RI are used to acquire CQI for MCS selection of PDSCHs scheduled by the gNB. In other words, the purpose of a CSI report can be inferred from the reporting indicator. Under this context, the UE could consider reporting specific reporting indicators to the NW and performing UEI CSI reporting based on the reported indicators.

[0269] For example, the UE may report reporting indicator(s) to the NW through signaling such as MAC-CE / UCI, and the UE may perform UEI CSI reporting for the reporting indicator(s). Alternatively, the UE may report reporting indicator(s) and activation / inactivity to the NW through signaling such as MAC-CE / DCI, and when the UE reports inactivation for the reporting indicator(s), the UE may not perform UEI CSI reporting for the reporting indicator(s) until reporting on the activation of the reporting indicator(s) is performed.

[0270] Figure 13 is a diagram for explaining how a UE performs UEI CSI reporting.

[0271] As described above, the UE can trigger not only CSI (channel state information) reporting (or NEI CSI reporting) directed from the network (NW) or base station, but also direct CSI reporting (or UEI CSI reporting, or UE trigger-based CSI reporting) when certain trigger conditions are met. In the following, the UE may be a UE that supports not only NWI CSI reporting but also UEI CSI reporting, or may report capability information for the same to the base station. In addition, although the following description focuses on the UEI CSI reporting operation of the UE based on the above-described scenario 1, if performing UEI CSI reporting is not the default operation, but not performing UEI CSI reporting is the default operation, the contents described in scenario 2 may also be applied.

[0272] Specifically, referring to FIG. 13, the UE may receive a UEI CSI reporting configuration from a base station (S131). For example, the UEI CSI reporting configuration may include information about measurement resource(s), reporting indicator (quantity), codebook type, measurement indicator, trigger condition, and / or measurement resource valid period (valid duration, valid time duration, valid time window) for channel measurement and / or interference measurement as described above. For example, the trigger condition may include information about a threshold of signal quality and a threshold number as described above. The UE may trigger the UEI CSI reporting when the number of consecutive measurement resources having a measurement value exceeding the threshold is equal to or greater than a specific threshold number (e.g., M) based on the UEI CSI reporting configuration, and may report measurement information measured on measurement resources included in the measurement resource valid period from the time point / time resource at which the trigger condition is satisfied.

[0273] Next, the UE may receive instruction information related to UE trigger-based CSI reporting (S133). The instruction information may include information on a time window within which the UE trigger-based CSI reporting is restricted. Specifically, if the UE supports the UEI CSI reporting as in Scenario 1 or reports this to the base station as capability information, the UE may perform UEI CSI reporting based on the UEI CSI reporting configuration as a default operation. In addition, if the time window is indicated through the instruction information, the UE may be restricted from performing UEI CSI reporting by the time window. For example, the UE may perform UEI CSI reporting as a default operation, but if the time window is indicated, the UE may be restricted from performing UEI CSI reporting during a time period corresponding to the time window. Alternatively, as described above, the instruction information may include information indicating a measurement resource, a measurement resource set, or a reporting configuration within which the UE trigger-based CSI reporting is restricted. Alternatively, the indication information may be provided via RRC signaling, MAC-CE or DCI. When the time window is indicated via MAC-CE, the MAC-CE may include information about the time window and an indication as to whether the time window is activated / deactivated. Alternatively, DCI may be used to indicate the aperiodic time window. Meanwhile, for convenience of explanation, the indication information is described as being received separately from the UEI CSI reporting configuration, but the indication information may be received by being included in the UEI CSI reporting configuration. For example, the UEI CSI reporting configuration may include information about a plurality of time windows, and activation or deactivation of at least one time window among the plurality of time windows may be indicated via DCI or MAC-CE.Alternatively, the above instruction information may also be defined as restriction information / constraint information in that it is information related to performance limitations of UEI CSI reporting.

[0274] Alternatively, the instruction information may include information about a time window determined based on a time interval during which the SBFD (Sub-band Full Duplex) operation of the base station is performed. For example, the UE may receive the instruction information setting the time window for the same time interval as the time interval during which the SBFD (Sub-band Full Duplex) operation of the base station is performed.

[0275] Next, the UE can perform the UE trigger-based CSI reporting based on the UEI CSI reporting configuration and the indication information (S135). First, the UE can trigger the UEI CSI reporting when the number of consecutive measurement resources on which measurement values ​​(RSRP, RSSI, etc.) exceeding a specific threshold are measured is greater than a specific threshold based on the UEI CSI reporting configuration, perform measurement on at least one measurement resource set within the measurement resource validity period from the time point or time resource at which the UEI CSI reporting is triggered, and perform UEI CSI reporting including measurement information thereon. At this time, the UE can determine whether the indication information is limited by a time window in determining the trigger condition and / or performing the UEI CSI reporting. For example, as described in Case 1-1 of the above-described scenario 1, the UE can perform the UEI CSI reporting in consideration of the limitation of the UEI CSI reporting by the time window. For example, if a reporting resource for the UEI CSI report is set within the time window, the UE may consider / determine the reporting resource as invalid and may not perform the UEI CSI report on the reporting resource. Meanwhile, as described in Case 1-1 of Scenario 1, the UE may determine / deem at least one measurement resource set within the time window as a valid measurement resource and perform measurement on the at least one measurement resource. However, the UE may treat at least one measurement resource set within the time window as not being a valid measurement resource for the trigger condition.For example, the UE may perform a measurement on at least one measurement resource, but even if the at least one measurement resource has a measurement value greater than or equal to the specific threshold, the UE may determine the at least one measurement resource as an invalid measurement resource in determining a trigger condition, and may not count it as the number of consecutive measurement resources as a trigger condition.

[0276] Alternatively, as described in Case 1-1 of Scenario 1, if the measurement resource validity period partially / completely overlaps the time window, the UE may exclude the time period corresponding to the time window from the timeline of the UEI CSI report, and reset the measurement resource validity period according to the exclusion of the time period. Alternatively, if the measurement resource validity period and the time window overlap, the UE may skip or drop the performance of the CSI report triggered before the start of the time window, and monitor whether the trigger condition is satisfied anew after the end of the time window.

[0277] FIG. 14 is a diagram illustrating a method for a base station to set up UEI CSI reporting for a UE.

[0278] Specifically, referring to FIG. 14, the base station may transmit a CSI reporting configuration for a UEI CSI reporting configuration (S141). For example, the UEI CSI reporting configuration may include information about measurement resource(s), reporting indicator (quantity), codebook type, measurement indicator, trigger condition, and / or measurement resource valid period (valid duration, valid time duration, valid time window) for channel measurement and / or interference measurement as described above. In this case, the base station may receive a triggered UEI CSI report from a UE that detects consecutive measurement resources having measurement values ​​exceeding a specific threshold number or more. Here, the UEI CSI report may include measurement information measured for measurement resources included within the measurement resource valid period from the time / time resource at which the trigger condition is satisfied.

[0279] Next, the base station can transmit instruction information related to UE trigger-based CSI reporting (S143). The instruction information may include information on a time window in which the UE trigger-based CSI reporting is restricted. Specifically, if the UE supports the UEI CSI reporting as in Scenario 1 or reports this to the base station as capability information, the base station can transmit the instruction information to the UE to restrict the performance of the UEI CSI reporting based on the UEI CSI reporting configuration in a specific time interval (or, a specific measurement resource). In this case, the base station can restrict the UE from reporting UEI CSI during a time interval corresponding to the time window. Alternatively, as described above, the instruction information may include information indicating a measurement resource, a measurement resource set, or a reporting configuration in which the UE trigger-based CSI reporting is restricted. Alternatively, the instruction information may be provided via RRC signaling, MAC-CE, or DCI. Meanwhile, for convenience of explanation, the instruction information is described as being received separately from the UEI CSI reporting settings, but the instruction information may be included in the UEI CSI reporting settings.

[0280] Alternatively, the instruction information may include information about a time window determined based on a time interval during which the SBFD (Sub-band Full Duplex) operation of the base station is performed. For example, the base station may determine the time window to be the same time interval as the time interval during which the SBFD (Sub-band Full Duplex) operation is performed, and transmit the instruction information including information about the time window to the UE.

[0281] Next, the base station can receive the UE trigger-based CSI reporting performed based on the UEI CSI reporting configuration and the indication information (S145). For example, the base station can receive the UEI CSI reporting triggered from a UE that has detected a number of consecutive measurement resources on which measurement values ​​(RSRP, RSSI, etc.) exceeding a certain threshold are measured in a certain threshold or more. At this time, the determination of the trigger condition and / or the performance of the UEI CSI reporting in the UE can be partially restricted through transmission of the indication information in the base station. For example, as described in Case 1-1 of the above-described scenario 1, it can be expected that the UEI CSI reporting will not be received in the reporting resources for the UEI CSI reporting set within the time window. Alternatively, the base station can expect that at least one measurement resource set within the time window will not be considered in the determination of the trigger condition of the UEI CSI reporting in the UE. For example, the base station may expect that the UE will not count the number of consecutive measurement resources as a trigger condition even if the measurement value exceeds the specific threshold for at least one measurement resource.

[0282] Alternatively, as described in Case 1-1 of Scenario 1, the base station may exclude the time window from the timeline of UEI CSI reporting. For example, if the time window and the measurement resource validity period overlap, the base station may expect the UE to reset the measurement resource validity period as described in Case 1-1 of Scenario 1, or to skip performing the triggered CSI report and monitor whether the trigger condition is satisfied again after the end of the time window.

[0283] In this way, the proposed invention can prevent overlapping measurement information from being signaled with network-directed CSI reporting by restricting the performance of UE-triggered CSI reporting under specific conditions / specific time intervals. Alternatively, the proposed invention can effectively prevent network-directed CSI reporting from being delayed or omitted due to UE-triggered CSI reporting by restricting the performance of UE-triggered CSI reporting under specific conditions / specific time intervals. Alternatively, the proposed invention can effectively resolve ambiguity in UE operation due to restrictions on the performance of UE-triggered CSI reporting by clearly defining a method for determining the validity of reporting resources and measurement resources when the performance of UE-triggered CSI reporting is restricted under specific conditions / specific time intervals.

[0284] Examples of communication systems to which the invention applies

[0285] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts of the present invention disclosed in this document may be applied to various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0286] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0287] Figure 15 illustrates a communication system applied to the present invention.

[0288] Referring to FIG. 15, a communication system (1) applied to the present invention includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and can be implemented in the form of HMD (Head-Mounted Device), HUD (Head-Up Display) installed in a vehicle, television, smartphone, computer, wearable device, home appliance, digital signage, vehicle, robot, etc. Mobile devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.), etc. Home appliances can include TV, refrigerator, washing machine, etc. IoT devices can include sensors, smart meters, etc. For example, base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station / network node to other wireless devices.

[0289] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0290] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present invention.

[0291] Examples of wireless devices to which the present invention is applied

[0292] Figure 16 illustrates a wireless device applicable to the present invention.

[0293] Referring to FIG. 16, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 15.

[0294] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). In addition, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chipset designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present invention, a wireless device may also mean a communication modem / circuit / chipset.

[0295] According to one example, the first wireless device or UE (100) may include a processor (102) and a memory (104) connected to the RF transceiver. The memory (104) may include at least one program capable of performing operations related to the embodiments described in FIGS. 8 to 14.

[0296] Specifically, the processor (102) of the first wireless device or UE (100) controls the transceiver (106) to receive a UE trigger-based CSI (channel state information) reporting configuration, receive instruction information including information on a time window in which the performance of the UE trigger-based CSI reporting is restricted, and perform the UE trigger-based CSI reporting based on the configuration information and the instruction information.

[0297] Alternatively, a processing device may be configured including a processor (102) and a memory (104) storing instructions that perform operations when executed by the processor (102). The operations may include receiving a UE (User Equipment) trigger-based CSI (channel state information) reporting configuration, receiving instruction information including information about a time window within which the UE trigger-based CSI reporting is restricted, and performing the UE trigger-based CSI reporting based on the configuration information and the instruction information.

[0298] Alternatively, a non-transitory computer-readable storage medium having recorded thereon instructions for performing the proposed methods described with reference to FIGS. 8 to 14 may be configured.

[0299] The second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). Furthermore, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present invention, a wireless device may also mean a communication modem / circuit / chip.

[0300] According to one example, the second wireless device or base station (200) may include a processor (202) and a memory (204) connected to the RF transceiver. The memory (204) may include at least one program capable of performing operations related to the embodiments described in FIGS. 8 to 14.

[0301] Specifically, the processor (202) of the second wireless device or base station (200) controls the transceiver (206) or the RF transceiver to transmit a UE (User Equipment) trigger-based CSI (channel state information) reporting setting, transmit instruction information including information on a time window in which the performance of the UE trigger-based CSI reporting is restricted, and receive the UE trigger-based CSI reporting based on the setting information and the instruction information.

[0302] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0303] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0304] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0305] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0306] Examples of wireless devices to which the present invention is applied

[0307] Figure 17 illustrates another example of a wireless device applicable to the present invention. The wireless device may be implemented in various forms depending on the use case / service.

[0308] Referring to FIG. 17, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 16 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and additional elements (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 17. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 16. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0309] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 15, 100a), a vehicle (Fig. 15, 100b-1, 100b-2), an XR device (Fig. 15, 100c), a portable device (Fig. 15, 100d), a home appliance (Fig. 15, 100e), an IoT device (Fig. 15, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 15, 400), a base station (Fig. 15, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0310] In FIG. 17, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and a first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of a set of one or more processors. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0311] Here, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless device (XXX, YYY) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create PAN (personal area networks) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0312] The embodiments described above are combinations of components and features of the present invention in a predetermined form. Each component or feature should be considered optional unless explicitly stated otherwise. Each component or feature may be implemented without being combined with other components or features. Furthermore, it is also possible to form an embodiment of the present invention by combining some components and / or features. The order of operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is self-evident that claims that do not have an explicit citation relationship in the patent claims may be combined to form an embodiment or may be incorporated as a new claim through a post-application amendment.

[0313] In this document, embodiments of the present invention have been described primarily focusing on the signal transmission and reception relationship between a terminal and a base station. This transmission and reception relationship is equally / similarly extended to signal transmission and reception between a terminal and a relay or a base station and a relay. Certain operations described as being performed by a base station in this document may, in some cases, be performed by its upper node. That is, it is obvious that various operations performed for communication with a terminal in a network composed of multiple network nodes including a base station may be performed by the base station or other network nodes other than the base station. The base station may be replaced by terms such as fixed station, Node B, eNode B (eNB), and access point. In addition, the terminal may be replaced by terms such as UE (User Equipment), MS (Mobile Station), MSS (Mobile Subscriber Station).

[0314] Embodiments of the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of hardware implementation, an embodiment of the present invention may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

[0315] When implemented via firmware or software, an embodiment of the present invention may be implemented in the form of modules, procedures, functions, etc. that perform the functions or operations described above. The software code may be stored in a memory unit and executed by a processor. The memory unit may be located within or outside the processor and may exchange data with the processor via various known means.

[0316] It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the scope of the invention. Therefore, the above detailed description should not be construed as limiting in any respect, but rather as illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the scope of equivalents of the present invention are intended to be included within the scope of the present invention.

[0317] The embodiments of the present invention as described above can be applied to various mobile communication systems.

Claims

1. In the method using UE (User Equipment), A step of receiving a UE trigger-based CSI (channel state information) reporting configuration; A step of receiving instruction information including information about a time window in which the performance of the UE trigger-based CSI reporting is restricted; and A method comprising: performing UE trigger-based CSI reporting based on the above setting information and the above instruction information.

2. In paragraph 1 A method, characterized in that at least one reporting resource set within the above time window is determined to be an invalid reporting resource.

3. In paragraph 1, A method characterized in that the UE determines at least one measurement resource set within the time window as a valid measurement resource and performs measurement on the at least one measurement resource.

4. In paragraph 1, The above UE trigger-based CSI reporting configuration includes information about threshold strength, threshold number, and measurement resource validity period, A method characterized in that the UE trigger-based CSI reporting is triggered based on the number of consecutive measurement resources in which measurement values ​​exceeding the threshold intensity are measured being greater than or equal to the threshold number.

5. In paragraph 4, The above measurement resource validity period starts from the time resource at which the UE trigger-based CSI reporting is triggered, A method, characterized in that the UE trigger-based CSI report includes measurement information measured for at least one measurement resource within the measurement resource validity period.

6. In paragraph 5, A method characterized in that, based on the overlap between the above measurement resource validity period and the above time window, the performance of the triggered CSI report is dropped.

7. In paragraph 4, A method characterized in that a measurement resource within the time window is not counted as a number of consecutive measurement resources even if a measurement value exceeding the threshold intensity is measured.

8. In paragraph 1, A method characterized in that the above time window is set based on a time period during which the SBFD (Sub-band Full Duplex) operation of the base station is performed.

9. In at least one non-transitory computer-readable medium, Contains instructions that perform operations when executed by at least one processor, The above actions. Receive UE (User Equipment) trigger-based CSI (channel state information) reporting settings; Receiving instruction information including information about a time window in which the performance of the UE trigger-based CSI reporting is restricted; and At least one non-transitory computer-readable medium comprising performing the UE trigger-based CSI reporting based on the above setting information and the above instruction information.

10. In UE (User Equipment), RF (Radio Frequency) transmitter and receiver; and A processor connected to the RF transceiver, The processor controls the RF transceiver to receive UE trigger-based CSI (channel state information) reporting settings, receives instruction information including information on a time window in which the UE trigger-based CSI reporting is restricted, and performs the UE trigger-based CSI reporting based on the setting information and the instruction information, 11. In Article 10 A UE, characterized in that at least one reporting resource set within the above time window is determined to be an invalid reporting resource.

12. In paragraph 10, A UE characterized in that the processor determines at least one measurement resource set within the time window as a valid measurement resource and performs measurement on the at least one measurement resource.

13. In a processing device that controls UE (User Equipment), at least one processor; and At least one memory connected to said at least one processor and storing instructions that perform operations when executed by said at least one processor; The above actions are, Receive UE (User Equipment) trigger-based CSI (channel state information) reporting settings; Receiving instruction information including information about a time window in which the performance of the UE trigger-based CSI reporting is restricted; and A processing device comprising: performing UE trigger-based CSI reporting based on the above setting information and the above instruction information.

14. In the method by the base station, A step of transmitting UE (User Equipment) trigger-based CSI (channel state information) reporting settings; A step of transmitting instruction information including information about a time window in which the performance of the UE trigger-based CSI reporting is restricted; and A method comprising: receiving the UE trigger-based CSI report based on the above setting information and the above instruction information.

15. At the base station, RF (Radio Frequency) transmitter and receiver; and A processor connected to the RF transceiver, A base station, wherein the processor controls the RF transceiver to transmit a UE (User Equipment) trigger-based CSI (channel state information) reporting configuration, transmits instruction information including information on a time window in which the performance of the UE trigger-based CSI reporting is restricted, and receives the UE trigger-based CSI reporting based on the setting information and the instruction information.

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