Method and apparatus for transmitting and receiving signals in a wireless communication system

Abstract

A terminal relating to any one of the embodiments disclosed herein includes receiving a CSI (channel state information) reporting setting via higher-level signaling; receiving DCI (downlink control information) containing information for a CSI request via a PDCCH (physical downlink control channel); and transmitting a CSI report relating to the CSI request based on whether the conditions for a valid CSI report have been met, wherein the CSI reporting setting includes a list of sub-settings, the terminal can determine Z and Z' values ​​to determine whether the conditions for a valid CSI report have been met based on only some (Z, Z')-candidate values.

Description

[Technical Field]

[0001] This disclosure relates to wireless communication systems, and more specifically, to methods and apparatus for transmitting or receiving uplink / downlink radio signals in wireless communication systems. [Background technology]

[0002] Wireless communication systems are widely deployed to provide various communication services such as voice and data. Generally, wireless communication systems are multiple access systems that can support communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.). Examples of multiple access systems include CDMA (code division multiple access) systems, FDMA (frequency division multiple access) systems, TDMA (time division multiple access) systems, OFDMA (orthogonal frequency division multiple access) systems, and SC-FDMA (single carrier frequency division multiple access) systems.

[0003] Energy conservation at base stations is considered important in wireless communication systems, including 3GPP, because it contributes to building environmentally friendly networks by reducing carbon emissions and lowering the operational expenditure (OPEX) of telecommunications carriers. In particular, with the introduction of 5G communication, higher transmission rates are required, necessitating base stations to be equipped with more antennas and provide services across wider bandwidths and frequency bands. The energy costs consumed by base stations for this purpose account for approximately 20% of total OPEX. Against this backdrop, network energy savings (NES) are being discussed in the standardization of wireless communication, including 3GPP NR. [Overview of the project] [Problems that the invention aims to solve]

[0004] The technical problem to be addressed in this disclosure is to provide a method and apparatus for efficiently performing the transmission and reception of wireless signals. As an example, a method and apparatus for more efficiently performing the transmission and reception of CSI reports can be provided in an environment that supports CSI reporting settings including one or more sub-settings for NES.

[0005] The technical challenges that this disclosure seeks to address are not limited to those stated above, and other technical challenges not mentioned can be inferred from the following description. [Means for solving the problem]

[0006] According to one aspect of this disclosure, a method performed by a terminal includes receiving a CSI (channel state information) reporting setting via higher-level signaling; receiving DCI (downlink control information) containing information for a CSI request via a PDCCH (physical downlink control channel); and transmitting a CSI report related to the CSI request based on whether the conditions for a valid CSI report have been met, wherein the terminal determines whether the conditions for a valid CSI report have been met based on Z and Z' values, the Z value relating to the time length from the last symbol of the PDCCH to the first symbol of the CSI report, and the Z' value relating to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report, and the CSI reporting setting is a CSI codebook, CSI-RS (channel state information-reference Based on the inclusion of a list of sub-configurations for individually setting at least one of the following for each sub-configuration: the activation of an antenna port subset, a CSI-RS resource subset, or power offset information, the terminal can determine the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​among a plurality of (Z, Z') candidate values.

[0007] Based on the fact that the CSI reporting setting includes the list of sub-settings, the terminal can exclude the first (Z, Z')-candidate values ​​and the second (Z, Z')-candidate values ​​for each of the multiple conditions related to CSI, which are no more than 4 CSI-RS ports for a single resource, and determine the Z value and the Z' value based only on the third (Z, Z')-candidate value.

[0008] The aforementioned conditions include a first condition, which can be satisfied if (i) the neurology associated with the subcarrier spacing (SCS) is below a threshold, (ii) CSI is triggered when zero CPUs (CSI processing units) are occupied, (iii) the physical uplink shared channel (PUSCH) for sending the CSI report does not include either a transmission block or a HARQ-ACK, (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), is no more than four CSI-RS ports per single resource, and has a wideband frequency granularity, and (v) the codebook type is single panel or the report content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

[0009] The aforementioned conditions include a second condition, which can be satisfied if (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), has no more than 4 CSI-RS ports per single resource, and has wideband frequency granularity, and (v) the codebook type is single panel or the report content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

[0010] The plurality of (Z, Z')-candidate values ​​may include a first (Z, Z')-candidate value, a second (Z, Z')-candidate value greater than the first (Z, Z')-candidate value for the same neurology, and a third (Z, Z')-candidate value greater than both the first (Z, Z')-candidate value and the second (Z, Z')-candidate value for the same neurology. Based on the fact that the CSI reporting setting includes the list of sub-settings, the terminal may determine the Z value and the Z' value based solely on the third (Z, Z')-candidate value.

[0011] The Z value may relate to the time length from the end of the last symbol of the PDCCH to the start of the cyclic prefix (CP) of the first symbol of the CSI report, and the Z' value may relate to the time length from the end of the last symbol of the CSI-RS resource to the start of the cyclic prefix (CP) of the first symbol of the CSI report.

[0012] Based on the fact that the CSI reporting setting includes the list of sub-settings, the terminal can determine the Z value and the Z' value based solely on Table A below.

[0013] JPEG2026528927000002.jpg65168

[0014] According to another aspect of this disclosure, a non-transitory recording medium can be provided which, when executed by the processor of a terminal, is configured to store instructions causing the terminal to perform the method described above.

[0015] A device according to another aspect of the present disclosure includes at least one memory configured to store instructions; and at least one processor configured to perform an operation by executing the instructions, the operation performed by the at least one processor including receiving a CSI (channel state information) reporting setting via higher-level signaling; receiving DCI (downlink control information) containing information for a CSI request via a PDCCH (physical downlink control channel); and transmitting a CSI report related to the CSI request based on whether the conditions for a valid CSI report have been met, the device determining whether the conditions for a valid CSI report have been met based on Z and Z' values, the Z value relating to the time length from the last symbol of the PDCCH to the first symbol of the CSI report, and the Z' value relating to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report, the CSI reporting setting being a CSI codebook, CSI-RS (channel state information-reference Based on the inclusion of a list of sub-configurations for individually setting at least one of the following for each sub-configuration: the activation of an antenna port subset, a CSI-RS resource subset, or power offset information, the device can determine the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

[0016] The device may further include a transceiver. The device may be a terminal configured to operate in a wireless communication system.

[0017] The device may be a processing device configured to control a terminal in a wireless communication system.

[0018] According to another aspect of this disclosure, the method performed by the base station includes transmitting a CSI (channel state information) reporting setting via higher-level signaling; transmitting a DCI (downlink control information) containing information for a CSI request via a PDCCH (physical downlink control channel); and receiving a CSI report related to the CSI request based on whether the conditions for a valid CSI report have been met, determining whether the conditions for a valid CSI report have been met based on Z and Z' values, wherein the Z value relates to the time length from the last symbol of the PDCCH to the first symbol of the CSI report, and the Z' value relates to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report, and the CSI reporting setting is a CSI codebook, CSI-RS (channel state information-reference Based on the inclusion of a list of sub-configurations for individually setting at least one of the following for each sub-configuration: the activation of an antenna port subset, a CSI-RS resource subset, or power offset information; the Z value and the Z' value can be determined based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

[0019] A base station according to another aspect of the present disclosure includes at least one memory configured to store instructions; and at least one processor configured to perform an operation by executing the instructions, the operation performed by the at least one processor including transmitting a CSI (channel state information) reporting setting via higher-level signaling; transmitting a DCI (downlink control information) containing information for a CSI request via a PDCCH (physical downlink control channel); and receiving a CSI report related to the CSI request based on whether the conditions for a valid CSI report have been met, determining whether the conditions for a valid CSI report have been met based on Z and Z' values, the Z value relating to the time length from the last symbol of the PDCCH to the first symbol of the CSI report, and the Z' value relating to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report, and the CSI reporting setting includes a CSI codebook, CSI-RS (channel state information-reference Based on the inclusion of a list of sub-configurations for individually setting at least one of the following for each sub-configuration: the activation of an antenna port subset, a CSI-RS resource subset, or power offset information; the Z value and the Z' value can be determined based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values. [Effects of the Invention]

[0020] According to one embodiment, the process of transmitting and receiving wireless signals can be performed efficiently. For example, in an environment where a CSI reporting configuration including one or more sub-configurations for NES is supported, the transmission and reception of CSI reports can be performed more efficiently.

[0021] Other effects not mentioned here can be inferred from the following description.

Brief Description of the Drawings

[0022] [Figure 1] Exemplify the physical channels (channel: channel) used in a 3GPP (registered trademark; the same applies hereinafter) system, which is an example of a wireless communication system, and a general signal transmission method using these channels. [Figure 2] Exemplify the structure of a radio frame. [Figure 3] Exemplify the resource grid of a slot. [Figure 4] Show an example in which a physical channel is mapped within a slot. [Figure 5] Exemplify the PDSCH and ACK / NACK transmission processes. [Figure 6] Exemplify the PUSCH transmission process. [Figure 7] Show an example of a procedure related to CSI. [Figure 8] It is a diagram for explaining the CSI calculation time and the determination of valid CSI reporting according to an embodiment. [Figure 9] Show an example of the operation of a terminal and a network according to an embodiment. [Figure 10] Show an example of an aperiodic CSI report according to an embodiment. [Figure 11] Show the flow of terminal operation according to an embodiment. [Figure 12] Show the flow of base station operation according to an embodiment. [Figure 13] Exemplify a communication system applicable to the present disclosure. [Figure 14] Exemplify a wireless device applicable to the present disclosure.

Modes for Carrying Out the Invention

[0023] The following technologies are used in various wireless connectivity 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 using radio technologies such as UTRA (Universal Terrestrial Radio Access) and CDMA2000. TDMA can be implemented using radio 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 using radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (Evolved UTRA). UTRA is part of UMTS (Universal Mobile Telecommunications System). 3GPP (3rd Generation Partnership Project) LTE (long term evolution) is part of E-UMTS (Evolved UMTS) which uses E-UTRA, and LTE-A (Advanced) is an advanced version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an advanced version of 3GPP LTE / LTE-A.

[0024] As more communication devices demand greater communication capacity, the need for improved mobile broadband (eMBB) communication compared to existing RAT (Radio Access Technology) is emerging. Furthermore, massive machine type communications (MTC), which connects multiple devices and things to provide various services anytime, anywhere, are one of the important issues to consider in next-generation communications. Moreover, system designs that take into account reliability and latency-sensitive services / terminals are being discussed. Thus, the introduction of next-generation RATs that take into account eMBB (enhanced Mobile Broadband Communication), massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed, and in this invention, for convenience, we refer to the relevant technology as NR (New radio or New RAT).

[0025] To clarify the explanation, 3GPP NR will be used as the primary reference, but the technical concept of this invention is not limited to this.

[0026] In this specification, the expression "setting" may be replaced with the expression "configure / configuration," and the two can be used interchangeably. Also, conditional expressions (e.g., "if," "in a case," or "when") may be replaced with expressions such as "based on that" or "in a state / status." Furthermore, the operation of the terminal / base station or the SW / HW configuration can be inferred / understood based on the satisfaction of the relevant conditions. In addition, in signal transmission and reception between wireless communication devices (e.g., base station, terminal), if the process on the receiving (or transmitting) side can be inferred / understood from the process on the transmitting (or receiving) side, the explanation may be omitted. For example, signal determination / generation / encoding / transmission on the transmitting side can be understood as signal monitoring / reception / decoding / determination on the receiving side. Furthermore, expressions that a terminal performs (or does not perform) a specific operation can also be interpreted as the base station operating on the expectation / assumption (or expectation / assumption that the terminal will not perform) a specific operation. The expression that a base station performs (or does not perform) a specific operation can also be interpreted as the terminal operating while expecting / assuming (or expecting / assuming that) the base station will perform that specific operation. Furthermore, in the following description, the sections, examples, illustrations, options, methods, schemes, etc., and the index are for the convenience of explanation and should not be interpreted as meaning that each necessarily constitutes an independent invention or that each necessarily must be implemented individually. Also, in describing each section, example, illustration, option, method, scheme, etc., unless there is an explicit conflict / contradictory statement, it should be inferred / interpreted that at least some of these may be combined and implemented together, or at least some may be omitted and implemented.

[0027] In wireless communication systems, terminals receive information from base stations via the downlink (DL) and transmit information from base stations via the uplink (UL). The information transmitted and received between base stations and terminals includes data and various control information, and various physical channels exist depending on the type and purpose of the information being transmitted and received.

[0028] Figure 1 illustrates the physical channels used in 3GPP NR systems and typical signal transmission methods using them.

[0029] A terminal that is powered on from an OFF state or that has newly entered a cell performs initial cell search operations in stage S101, such as establishing synchronization with the base station. For this purpose, the terminal receives an SSB (Synchronization Signal Block) from the base station. The SSB includes a PSS (Primary Synchronization Signal), an SSS (Secondary Synchronization Signal), and a PBCH (Physical Broadcast Channel). Based on the PSS / SSS, the terminal establishes synchronization with the base station and obtains information such as the cell identity. The terminal also obtains broadcast information within the cell based on the PBCH. In addition, during the initial cell search stage, the terminal can receive a Downlink Reference Signal (DL RS) to check the status of the downlink channel.

[0030] In step S102, terminals that have completed the initial cell search receive a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH) based on the information from the Physical Downlink Control Channel, thereby obtaining more specific system information.

[0031] Subsequently, the terminal performs a random access procedure, such as in steps S103 to S106, to complete the connection to the base station. For this purpose, the terminal transmits a preamble via a physical random access channel (PRACH) (S103) and receives a response message to the preamble via a physical downlink control channel and its corresponding physical downlink sharing channel (S104). In the case of contention-based random access on a competitive infrastructure, a contention resolution procedure is performed, such as transmitting further physical random access channels (S105) and receiving physical downlink control channels and their corresponding physical downlink sharing channels (S106).

[0032] A terminal that has performed these procedures then receives the physical downlink control channel / physical downlink shared channel (S107) and transmits the physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) as part of the general uplink / downlink signal transmission procedure (S108). The control information transmitted by the terminal to the base station is collectively referred to as Uplink Control Information (UCI). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted via PUCCH, but may be transmitted via PUSCH if control information and traffic data need to be transmitted simultaneously. Furthermore, UCI can be transmitted aperiodically via PUSCH in response to network requests / instructions.

[0033] Figure 2 illustrates the structure of a wireless frame. In NR, uplink and downlink transmissions consist of frames. A wireless frame has a length of 10ms and is divided into two 5ms Half-Frames (HF). Each Half-Frame is divided into five 1ms Subframes (SF). Each Subframe is divided into one or more slots, and the number of slots within a Subframe depends on the Subcarrier Spacing (SCS). Each slot contains 12 or 14 OFDM (Otrhogonal Frequency Division Multiplexing) symbols by a cyclic prefix (CP). When a normal CP is used, each slot contains 14 OFDM symbols. When an extended CP is used, each slot contains 12 symbols.

[0034] Table 1 illustrates how the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS when a general CP is used.

[0035] [Table 1]

[0036] *N slot symb : Number of symbols in the slot

[0037] *N frame,u slot : Number of slots in the frame

[0038] *N subframe,u slot : Number of slots in the subframe

[0039] Table 2 illustrates how the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS when extended CP is used.

[0040] [Table 2]

[0041] The frame structure shown is merely an example; the number of subframes, slots, and symbols within a frame can be varied in many ways.

[0042] In an NR system, OFDM numerology (e.g., SCS) can be configured to differ between multiple cells merged into a single terminal. This allows the (absolute time) intervals of time resources (e.g., SF, slots, or TTI) (commonly referred to as TU (Time Unit) for convenience) composed of the same number of symbols to differ between the merged cells. Here, symbols include OFDM symbols (or CP-OFDM symbols) and SC-FDMA symbols (or Discrete Fourier Transform-spread-OFDM, DFT-s-OFDM symbols).

[0043] Figure 3 illustrates a resource grid for slots. A slot contains multiple symbols in the time domain. For example, in the case of a general CP, one slot contains 14 symbols, while in the case of an extended CP, one slot contains 12 symbols. A carrier wave contains multiple subcarriers in the frequency domain. An RB (Resource Block) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) is defined as multiple consecutive PRBs (Physical RBs) in the frequency domain and can correspond to one numerology (e.g., SCS, CP length, etc.). A carrier wave contains up to N (e.g., 5) BWPs. Data communication takes place over activated BWPs, and only one BWP is activated per terminal. In the resource grid, each element is called a Resource Element (RE), and one complex symbol can be mapped to it.

[0044] Figure 4 shows an example of how physical channels are mapped within a slot. In the DL control domain, PDCCH is transmitted, and in the DL data domain, PDSCH is transmitted. In the UL control domain, PUCCH is transmitted, and in the UL data domain, PUSCH is transmitted. GP provides a time gap during the transition between the base station and the terminal from transmit mode to receive mode or from receive mode to transmit mode. Some symbols at the point of transition from DL to UL within a subframe can be set as GP.

[0045] The following provides a more detailed explanation of each physical channel.

[0046] The PDCCH carries DCI (Downlink Control Information). For example, the PCCCH (i.e., DCI) carries the transmission format and resource allocation for the DL-SCH (downlink shared channel), resource allocation information for the UL-SCH (uplink shared channel), paging information for the PCH (Paging Channel), system information on the DL-SCH, resource allocation information for higher-level control messages such as arbitrary connection responses transmitted on the PDSCH, transmission power control commands, and activation / deactivation of CS (Configured scheduling). The DCI includes a CRC (cyclic redundancy check), which is masked / scrambled with various identifiers (e.g., Radio Network Temporary Identifier, RNTI) depending on the owner or use of the PDCCH. For example, if the PDCCH is for a specific terminal, the CRC is masked with a terminal identifier (e.g., cell-RNTI, C-RNTI). If the PDCCH is related to paging, the CRC is masked with P-RNTI (Paging-RNTI). If the PDCCH relates to system information (e.g., System Information Block, SIB), the CRC is masked with SI-RNTI (System Information RNTI). If the PDCCH relates to an arbitrary connection response, the CRC is masked with RA-RNTI (Random Access-RNTI).

[0047] A PDCCH consists of 1, 2, 4, 8, or 16 CCEs (Control Channel Elements) depending on the Aggregation Level (AL). A CCE is a logical allocation unit used to provide a PDCCH of a predetermined code rate depending on the radio channel state. A CCE consists of 6 REGs (Resource Element Groups). Each REG is defined by one OFDM symbol and one (P)RB. The PDCCH is transmitted by a CORESET (Control Resource Set). A CORESET is defined by a set of REGs with a given neural network (e.g., SCS, CP length, etc.). Multiple CORESETs for a single terminal can be superimposed in the time / frequency domain. A CORESET is configured by system information (e.g., Master Information Block, MIB) or terminal-specific (UE-specific) higher-level signaling (e.g., Radio Resource Control, RRC, layer). Specifically, the number of RBs and OFDM symbols (maximum 3) that make up a CORESET are configured by higher-level signaling.

[0048] For PDCCH reception / detection, the terminal monitors PDCCH candidates. PDCCH candidates indicate CCEs that the terminal should monitor for PDCCH detection. Each PDCCH candidate is defined by AL by 1, 2, 4, 8, or 16 CCEs. Monitoring includes (blind) decoding of PDCCH candidates. The set of PDCCH candidates monitored by the terminal is defined as the PDCCH Search Space (SS). Search spaces include Common Search Spaces (CSS) or Terminal-Specific Search Spaces (UE-specific search spaces, USS). The terminal can obtain a DCI by monitoring PDCCH candidates in one or more search spaces configured by MIB or higher-level signaling. Each CORESET is associated with one or more search spaces, and each search space is associated with one CORESET. A search space is defined based on the following parameters:

[0049] - controlResourceSetId: Indicates the CORESET associated with the search space.

[0050] - monitoringSlotPeriodicityAndOffset: Indicates the PDCCH monitoring period (per slot) and the PDCCH monitoring interval offset (per slot).

[0051] - monitoringSymbolsWithinSlot: Indicates the PDCCH monitoring symbols within the slot (for example, the first symbol of CORESET).

[0052] - nrofCandidates:AL={1, 2, 4, 8, 16} shows the number of PDCCH candidates (one of 0, 1, 2, 3, 4, 5, 6, 8).

[0053] *A PDCCH (monitoring) opportunity is defined as an opportunity to monitor a PDCCH candidate (e.g., a time / frequency resource). One or more PDCCH (monitoring) opportunities can be configured within a slot.

[0054] Table 3 illustrates the characteristics of each search space type.

[0055] [Table 3]

[0056] Table 4 illustrates the DCI format transmitted via PDCCH.

[0057] [Table 4]

[0058] DCI format 0_0 is used to schedule TB-based (or TB-level) PUSCHs, and DCI format 0_1 ​​is used to schedule TB-based (or TB-level) PUSCHs or CBG (Code Block Group)-based (or CBG-level) PUSCHs. DCI format 1_0 is used to schedule TB-based (or TB-level) PDSCHs, and DCI format 1_1 is used to schedule TB-based (or TB-level) PDSCHs or CBG-based (or CBG-level) PDSCHs (DL grant DCI). DCI formats 0_0 / 0_1 are called UL grant DCI or UL scheduling information, and DCI formats 1_0 / 1_1 are called DL grant DCI or DL ​​scheduling information. DCI format 2_0 is used to transmit dynamic slot format information (e.g., dynamic SFI) to terminals, and DCI format 2_1 is used to transmit downlink pre-emption information to terminals. DCI format 2_0 and / or DCI format 2_1 are transmitted to terminals within a group via a Group Common PDCCH, which is a PDCCH that is transmitted to terminals defined within a group.

[0059] DCI formats 0_0 and 1_0 are referred to as fallback DCI formats, while DCI formats 0_1 and 1_1 are referred to as non-fallback DCI formats. Fallback DCI formats maintain the same DCI size / field configuration regardless of the terminal settings. Conversely, non-fallback DCI formats have different DCI size / field configurations depending on the terminal settings.

[0060] PDSCH carries downlink data (e.g., DL-SCH transport block, DL-SCH TB) and modulates using methods such as QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation), 64QAM, and 256QAM. TB is encoded to generate a codeword. PDSCH carries up to two codewords. Scrambling and modulation mapping are performed for each codeword, and the modulation symbols generated from each codeword are mapped to one or more layers. Each layer, along with a DMRS (Demodulation Reference Signal), is mapped to a resource to generate an OFDM symbol signal, which is then transmitted by the corresponding antenna port.

[0061] PUCCH carries UCI (Uplink Control Information). UCI includes the following:

[0062] - SR (Scheduling Request): This is information used to request UL-SCH resources.

[0063] - HARQ (Hybrid Automatic Repeat reQuest)-ACK (Acknowledgement): This is a response to a downlink data packet (e.g., a codeword) on a PDSCH. It indicates whether the downlink data packet was successfully received. One bit of HARQ-ACK is transmitted as a response to a single codeword, and two bits of HARQ-ACK are transmitted as a response to two codewords. HARQ-ACK responses include positive ACK (simply ACK), negative ACK (NACK), DTX (Discontinuous Transmission), or NACK / DTX. Here, the term HARQ-ACK is used synonymously with HARQ ACK / NACK and ACK / NACK.

[0064] - CSI (Channel State Information): This is feedback information for the downlink channel. MIMO (Multiple Input Multiple Output): Related feedback information includes RI (Rank Indicator) and PMI (Precoding Matrix Indicator).

[0065] Table 5 illustrates the PUCCH format. It can be divided into Short PUCCH (formats 0 and 2) and Long PUCCH (formats 1, 3, and 4) based on the PUCCH transmission length.

[0066] [Table 5]

[0067] PUCCH format 0 carries UCIs up to 2 bits in size and is mapped and transmitted based on a sequence. Specifically, a terminal transmits a specific UCI to a base station by transmitting one of several sequences via PUCCH, which is PUCCH format 0. A terminal transmits PUCCH, which is PUCCH format 0, within the PUCCH resource for the corresponding SR setting only when transmitting a positive SR.

[0068] PUCCH format 1 carries UCIs up to 2 bits in size, and modulation symbols are spread in the time domain by orthogonal cover codes (OCCs), with the settings varying depending on whether frequency hopping is present or not. DMRS transmits modulation symbols as symbols that are not transmitted (i.e., they are transmitted using TDM (Time Division Multiplexing)).

[0069] PUCCH format 2 carries UCIs with bit sizes greater than 2 bits, and the modulated symbols are transmitted via DMRS and FDM (Frequency Division Multiplexing). DM-RS symbols are located at symbol indices #1, #4, #7, and #10 within a 1 / 3 density resource block. PN (Pseudo Noise) sequences are used for DM_RS sequences. Frequency hopping can be activated for 2-symbol PUCCH format 2.

[0070] PUCCH format 3 does not perform terminal multiplexing within the same physical resource block and carries UCI with a bit size greater than 2 bits. In other words, PUCCH resources in PUCCH format 3 do not contain orthogonal cover codes. Modulation symbols are transmitted using DMRS and TDM (Time Division Multiplexing).

[0071] PUCCH format 4 supports multiplexing of up to four terminals within the same physical resource block and carries UCIs with bit sizes greater than 2 bits. That is, PUCCH resources in PUCCH format 3 include orthogonal cover codes. Modulation symbols are transmitted using DMRS and TDM (Time Division Multiplexing).

[0072] At least one of the one or more cells configured in the terminal is set up for PUCCH transmission. At least the Primary Cell is set up as a cell for PUCCH transmission. Based on at least one cell set up for PUCCH transmission, at least one PUCCH cell group is set up in the terminal, and each PUCCH cell group contains one or more cells. A PUCCH cell group is also simply called a PUCCH group. PUCCH transmission is set up not only in the Primary Cell but also in the SCell, and the Primary Cell belongs to the Primary PUCCH group, and a PUCCH-SCell set up for PUCCH transmission belongs to the Secondary PUCCH group. For cells belonging to the Primary PUCCH group, the PUCCH on the Primary Cell is used, and for cells belonging to the Secondary PUCCH group, the PUCCH on the PUCCH-SCell is used.

[0073] A PUSCH carries uplink data (e.g., UL-SCH transport block, UL-SCH TB) and / or uplink control information (UCI) and is transmitted based on a CP-OFDM (Cyclic Prefix-Orthogonal Frequency Division Multiplexing) waveform or a DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) waveform. When a PUSCH is transmitted based on a DFT-s-OFDM waveform, the terminal applies transform precoding to transmit the PUSCH. For example, if transform precoding is not possible (e.g., transform precoding is disabled), the terminal transmits the PUSCH based on a CP-OFDM waveform; if transform precoding is possible (e.g., transform precoding is enabled), the terminal transmits the PUSCH based on either a CP-OFDM or DFT-s-OFDM waveform. PUSCH transmissions are dynamically scheduled by UL grants within DCI, or semi-statically scheduled based on higher-level (e.g., RRC) signaling (and / or Layer 1 (L1) signaling (e.g., PDCCH)) (configured grant). PUSCH transmissions are performed on a codebook-based or non-codebook-based basis.

[0074] Figure 5 illustrates the ACK / NACK transmission process. Referring to Figure 5, the terminal detects the PDCCH in slot #n. Here, the PDCCH contains downlink scheduling information (e.g., DCI format 1_0, 1_1), and the PDCCH indicates the DL assignment-to-PDSCH offset (K0) and the PDSCH-HARQ-ACK reporting offset (K1). For example, DCI format 1_0, 1_1 contains the following information:

[0075] - Frequency domain resource assignment: Indicates the RB set assigned to PDSCH.

[0076] - Time domain resource assignment: K0 (e.g., slot offset), 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).

[0077] - The PDSCH-to-HARQ_feedback timing indicator shows K1.

[0078] - HARQ process number (4 bits): Indicates the HARQ process ID (Identity) for the data (e.g., PDSCH, TB).

[0079] - PUCCH resource indicator (PRI): Indicates which PUCCH resource to use for UCI transmission from among multiple PUCCH resources within the PUCCH resource set.

[0080] Subsequently, the terminal receives a PDSCH from slot #(n+K0) based on the scheduling information of slot #n. After receiving the PDSCH in slot #n1 (where n+K0≦n1), it transmits a UCI via PUCCH in slot #(n1+K1). Here, the UCI includes a HARQ-ACK response to the PDSCH. In Figure 5, for convenience, it is assumed that the SCS for PDSCH and the SCS for PUCCH are the same, and that slot #n1 = slot #n+K0, but the present invention is not limited to this. If the SCSs are different, K1 is indicated / interpreted based on the SCS of PUCCH.

[0081] If a PDSCH is configured to transmit up to one TB, the HARQ-ACK response consists of 1 bit. If a PDSCH is configured to transmit up to two TBs, the HARQ-ACK response consists of 2 bits if spatial bundling is not configured, and 1 bit if spatial bundling is configured. If the transmission time of the HARQ-ACK for multiple PDSCHs is specified as slot #(n+K1), the UCI transmitted in slot #(n+K1) contains the HARQ-ACK responses for multiple PDSCHs.

[0082] Whether a terminal should perform spatial bundling for a HARQ-ACK response is configured on a per-cell-group basis (e.g., RRC / higher-level signaling). For example, spatial bundling is configured individually for each HARQ-ACK response sent via PUCCH and / or via PUSCH.

[0083] Spatial bundling is supported when the maximum number of TBs (or codewords) that can be received at once (or scheduled by 1DCI) in the serving cell is two (or more than two) (for example, when the higher-level parameter maxNrofCodeWordsScheduledByDCI corresponds to 2-TB). On the other hand, more than four layers are used for 2-TB transmission, and up to four layers are used for 1-TB transmission. As a result, when spatial bundling is configured for the cell group in question, spatial bundling is performed on serving cells within that cell group that can schedule more than four layers. On the serving cell in question, a terminal attempting to send 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.

[0084] For example, assuming a terminal receives a DCI scheduling 2-TB and receives 2-TB via PDSCH based on that DCI, the terminal performing spatial bundling can generate a single A / N bit by performing a logical AND operation on the first A / N bit for the first TB and the second A / N bit for the second TB. As a result, if both the first and second TBs are ACK, the terminal reports the ACK bit value to the base station; if either TB is NACK, the terminal reports the NACK bit value to the base station.

[0085] For example, if only 1-TB is actually scheduled on a serving cell configured to receive 2-TB, the terminal can logically AND the A / N bit for that 1-TB with the bit value 1 to generate a single A / N bit. As a result, the terminal reports the A / N bit for that 1-TB directly to the base station.

[0086] Multiple parallel DL HARQ processes exist at a base station / terminal for DL ​​transmission. These multiple parallel HARQ processes ensure that DL transmissions continue while waiting for HARQ feedback regarding the success or failure of previous DL transmissions. Each HARQ process is associated with a HARQ buffer in the MAC (Medium Access Control) hierarchy. Each DL HARQ process manages state variables related to the number of MAC PDUs (Physical Data Blocks) transmitted in the buffer, HARQ feedback for MAC PDUs in the buffer, and the current redundancy version. Each HARQ process is distinguished by a HARQ process ID.

[0087] Figure 6 illustrates the PUSCH transmission process. Referring to Figure 6, the terminal detects PDCCH in slot #n. Here, PDCCH contains uplink scheduling information (e.g., DCI format 0_0, 0_1). DCI format 0_0, 0_1 contains the following information:

[0088] - Frequency domain resource assignment: Indicates the RB set assigned to PUSCH.

[0089] - Time domain resource assignment: Indicates slot offset K2, 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 are indicated by SLIV (Start and Length Indicator Value) or respectively.

[0090] Subsequently, the terminal transmits PUSCH in slot #(n+K2) according to the scheduling information of slot #n. Here, PUSCH includes UL-SCH TB.

[0091] Figure 7 shows an example of a procedure related to CSI.

[0092] The terminal receives configuration information related to CSI from the base station via RRC signaling (710). The configuration information related to CSI includes at least one of the following: information about CSI-IM (interference management) resources, information about CSI measurement configuration, information about CSI resource configuration, information about CSI-RS resources, or information about CSI report configuration.

[0093] - CSI-IM resources are configured for interference measurement (IM) of the terminal. In the time domain, the CSI-IM resource set is configured periodically, semi-permanently, or aperiodicly. The CSI-IM resources are configured for the terminal as Zero Power (ZP)-CSI-RS. ZP-CSI-RS is configured separately from Non-Zero Power (NZP)-CSI-RS.

[0094] - The UE can assume that a CSI-RS resource for channel measurement set up for one CSI report and a CSI-IM / NZP CSI-RS resource for interference measurement (when the NZP CSI-RS resource is used for interference measurement) are in a QCL relationship with respect to "QCL-TypeD" for each resource.

[0095] - The CSI resource configuration includes at least one of the following: 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) is an NZP CSI-RS for CSI acquisition, and the IMR (Interference measurement resource) is an NZP CSI-RS for CSI-IM and IM.

[0096] - CSI-RS may be configured on one or more terminals. Different CSI-RS configurations may be provided for each terminal, or the same CSI-RS configuration may be provided for multiple terminals. CSI-RS can support up to 32 antenna ports. CSI-RS corresponding to N (where N is 1 or more) antenna ports is mapped to N RE positions within a time-frequency unit corresponding to one slot and one RB. If N is 2 or more, the N-port CSI-RS is multiplexed by CDM, FDM and / or TDM schemes. CSI-RS is mapped to REs other than those to which CORESET, DMRS and SSB are mapped. In the frequency domain, CSI-RS is configured for the entire bandwidth, a portion of the bandwidth (BWP), or a portion of the bandwidth. CSI-RS is transmitted at each RB within the bandwidth in which CSI-RS is configured (i.e., density = 1), or CSI-RS is transmitted at every second RB (e.g., even or odd RBs) (i.e., density = 1 / 2). When CSI-RS is used as a Tracking Reference Signal (TRS), a single-port CSI-RS may be mapped onto three subcarriers in each resource block (i.e., density = 3). One or more CSI-RS resource sets are configured at the terminal in the time domain. Each CSI-RS resource set contains one or more CSI-RS configurations. Each CSI-RS resource set is configured periodically, semipersistent, or aperiodic.

[0097] - CSI reporting settings include settings for feedback type, measurement resources, reporting type, etc. The NZP-CSI-RS resource set is used for the terminal's CSI reporting configuration. The NZP-CSI-RS resource set is associated with CSI-RS or SSB. In addition, many periodic NZP-CSI-RS resource sets are configured by the TRS resource set. (i) Feedback types include Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CRI (CSI-RS Resource Indicator), SSBRI (SSB Resource Block Indicator), LI (Layer Indicator), Rank Indicator (RI), L1-Reference Signal Received Strength (RSRP), etc. (ii) Measurement resources include settings for downlink signals and / or downlink resources on which the terminal takes measurements to determine feedback information. Measurement resources are configured as ZP and / or NZP CSI-RS resource sets related to the CSI reporting settings. An NZP CSI-RS resource set includes a CSI-RS set or an SSB set. For example, L1-RSRP is measured against a CSI-RS set or against an SSB set. (iii) The reporting type includes settings for when the terminal reports and the uplink channel, etc. Reporting timing is configured to be periodic, semi-permanent, or aperiodic. Periodic CSI reports are sent over PUCCH. Semi-permanent CSI reports are sent over PUCCH or PUSCH based on MAC CE indicating activation / deactivation. Aperiodic CSI reports are indicated by DCI signaling. For example, the CSI request field of an uplink grant indicates one of several report trigger sizes. Aperiodic CSI reports are sent over PUSCH.

[0098] The terminal measures the CSI based on configuration information related to the CSI. The CSI measurement procedure includes receiving the CSI-RS (720), computing the received CSI-RS, and acquiring the CSI (730).

[0099] The terminal transmits a CSI report to the base station (740). The time and frequency resources available to the UE for CSI reporting are controlled by the base station. CSI (channel state information) includes at least one of the following: channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), SS / PBCH block resource indicator (SSBRI), layer indicator (LI), rank indicator (RI), L1-RSRP, and / or L-SINR.

[0100] The time domain behavior of CSI reporting supports periodic, semi-permanent, and aperiodic CSI reporting. i) Periodic CSI reporting is performed on short PUCCH and long PUCCH. The periodicity and slot offset of periodic CSI reporting are set by RRC and refer to CSI-ReportConfig IE. ii) SP (semi-periodic) CSI reporting is performed on short PUCCH, long PUCCH, or PUSCH. If it is an SP CSI on a short / long PUCCH, the periodicity and slot offset are set by RRC and the CSI reporting is activated / deactivated by another MAC CE / DCI. When SP CSI is performed on PUSCH, the period of SP CSI reporting is set by RRC, but the slot offset is not set by 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 by DCI, and subsequent CSI report timings follow the period set by RRC. DCI format 0_1 ​​includes a CSI request field and activates / deactivates a specific configured SP-CSI trigger state. SP CSI reporting has the same or similar activation / deactivation as the mechanism with data transmission on SPS PUSCH. iii) Aperiodic CSI reporting is performed on PUSCH and triggered by DCI. In this case, information regarding the trigger of aperiodic CSI reporting is communicated / indicated / set by MAC-CE. In the case of AP CSI with AP CSI-RS, the AP CSI-RS timing is set by RRC, and the timing for AP CSI reporting is dynamically controlled by DCI.

[0101] CSI enhancement for Network Energy Saving

[0102] To determine the impact on terminal channel quality when NES (network energy saving) is introduced, enhancements to the CSI framework are being discussed at the NR Rel.18 standardization meeting. Here, this specification discloses various embodiments of CPU (CSI Processing Unit) occupation and CSI measurement for CSI reporting configured for NES.

[0103] Table 6 is an excerpt of the items that will be reflected in the 3GPP TS38.214 document, based on the agreements reached in recent NR standardization discussions (R1-2308743).

[0104] [Table 6]

[0105] JPEG2026528927000009.jpg246169JPEG2026528927000010.jpg16168

[0106] JPEG2026528927000011.jpg241169JPEG2026528927000012.jpg31168

[0107] JPEG2026528927000013.jpg236170

[0108] JPEG2026528927000014.jpg241170JPEG2026528927000015.jpg21168

[0109] JPEG2026528927000016.jpg241169JPEG2026528927000017.jpg16169

[0110] JPEG2026528927000018.jpg240170JPEG2026528927000019.jpg21168

[0111] JPEG2026528927000020.jpg106169

[0112] As shown in Table 6 above, one or more sub-configurations are set within a single CSI report configuration, and each sub-configuration can contain one or a combination of the following settings.

[0113] - List of IDs for one or more CSI-RS resources

[0114] - Antenna port subset indication consisting of a bitmap (i.e., indication of the antenna port subset to be activated)

[0115] - Additional power offset delta from the EPRE offset between PDSCH and CSI-RS configured within the CSI-RS resource configuration.

[0116] - CSI Codebook

[0117] For example, if a list of sub-configurations is provided via CSI report configuration, at least one of the following parameters can be configured for each sub-configuration: (i) CSI codebook, (ii) bitmap for enabling CSI-RS (channel state information-reference signal) antenna port subsets, (iii) CSI-RS resource subsets, and / or (v) power offset delta.

[0118] For example, according to sub-configuration setting method #1, the first sub-configuration of the CSI report configuration may include the parameter set {first CSI codebook, first CSI-RS antenna port subset, first power offset delta}, and the second sub-configuration may include the parameter set {second CSI codebook, second CSI-RS antenna port subset, second power offset delta}. Here, each sub-configuration is associated with all CSI-RS resources of the CSI report configuration.

[0119] For example, according to sub-configuration setting method #2, the first sub-configuration of the CSI report configuration may include the {first CSI-RS resource subset, first power offset delta} parameter set, and the second sub-configuration may include the {second CSI-RS resource subset, second power offset delta} parameter set. The first CSI-RS resource subset and the second CSI-RS resource subset can be selected from the CSI-RS resources included in the CSI report configuration, respectively.

[0120] For convenience, a CSI report configuration that includes a sub-configuration with a list of IDs for one or more CSI-RS resources is referred to as a type 2 SD (spatial domain) adaptation, a CSI report configuration that includes a sub-configuration with an antenna port subset indication configured as a bitmap is referred to as a type 1 SD adaptation, and a CSI report configuration that includes a sub-configuration with an additional power offset delta value is referred to as a PD (power domain) adaptation. A sub-configuration belonging to a single CSI report configuration can have a list of IDs for one or more CSI-RS resources and / or a power offset delta value configured; this is referred to as a type 2 SD+PD adaptation, and a sub-configuration belonging to a single CSI report configuration can have an antenna port subset indication configured as a bitmap and / or a power offset delta value configured; this is referred to as a type 1 SD+PD adaptation. In the case of Type 1 SD or PD or Type 1 SD+PD adaptation, each CSI-RS resource can interact with all sub-configurations set up within a single CSI report configuration. In the case of Type 2 SD, each CSI-RS resource can interact with only one sub-configuration out of multiple sub-configurations within a single CSI report configuration.In the case of Type 2 SD+PD adaptation, within the same CSI report configuration, list#1 of CSI-RS resources configured in one sub-configuration and list#2 of CSI-RS resources configured in another sub-configuration may be identical or disjoint.

[0121] On the other hand, if L sub-configurations are set within a single CSI report configuration, the terminal can report CSI information corresponding to each of those L sub-configurations to the base station via a single PUSCH / PUCCH. Of the L sub-configurations, only N (a value of N less than or equal to L and greater than or equal to 1) sub-configurations are activated or triggered via MAC-CE or DCI, in which case the terminal can report CSI information corresponding to each of those N sub-configurations to the base station via a single PUSCH / PUCCH. Specifically, for a CSI report configuration with semi-persistent CSI reporting on PUCCH, N sub-configurations out of the L sub-configurations set via MAC-CE are activated, and for a CSI reporting configuration with semi-persistent CSI reporting on PUSCH or aperiodic CSI reporting, N sub-configurations out of the L sub-configurations set via DCI can be triggered.

[0122] This paper proposes a CSI measurement method and a CSI-RS resource / port counting method that take into account the complexity of the terminal's implementation when a terminal calculates and reports CSI information corresponding to one or more sub-configurations for a single CSI report.

[0123] [Proposal #1] Counting the number of CSI-RS resources and / or ports when one CSI-RS resource can be linked to multiple sub-configurations.

[0124] The counting method in conventional NR specifications is defined as follows:

[0125] "If a CSI-RS resource is referred N times by one or more CSI Reporting Settings, the CSI-RS resource and the CSI-RS ports within the CSI-RS resource are counted N times."

[0126] In other words, even if there is only one CSI-RS resource, if it is associated with multiple CSI reporting settings, the number of CSI-RS resources and ports will be counted according to the number of CSI reporting settings. The purpose of this counting is that, due to the implementation of the terminal, it is not possible to store more than a certain number of resources / ports in memory when storing CSI-RS. Based on the number of resources / ports reported by the terminal capability, the base station can set the CSI reporting settings so as not to exceed the terminal capability based on the counting rule described above.

[0127] The enhancement of the CSI framework for NES allows for multiple sub-configurations within a single CSI reporting setting, and the same CSI-RS resource can be linked to each sub-configuration. Therefore, it became necessary to define a method for CSI-RS resource / port counting in this case.

[0128] First, we propose a method for counting CSI-RS resources. If one CSI-RS resource is configured in X CSI reporting settings, and the number of sub-configurations linked to that CSI-RS resource within each CSI reporting setting is defined as N(k), then the CSI-RS resource counting can be defined as N(1) + N(2) + ... + N(X). Here, N(1) represents the number of sub-configurations linked to that CSI-RS resource in the 1st CSI reporting setting (where the CSI-RS resource is configured), and N(X) represents the number of sub-configurations linked to that CSI-RS resource in the Xth CSI reporting setting (where the CSI-RS resource is configured). If there are no sub-configurations configured for the kth CSI reporting setting, then the value of N(k) is 1. Specifically, the N(k) value, i.e., the number of sub-configurations linked to the CSI-RS resource, can be determined by the terminal's capability, CSI reporting type (e.g., P / SP / AP CSI reporting), or CSI-RS resource type (e.g., P / SP / AP CSI-RS resource), and one or a combination of the following alt methods can be applied.

[0129] - Alt-1: Even if multiple sub-configurations are set or activated for the k-th CSI reporting setting (i.e., CSI-ReportConfig), the N(k) value is always considered to be 1.

[0130] - Alt-2: If multiple (i.e., L) sub-configurations are set for the k-th CSI reporting setting, the N(k) value is always considered to be L (regardless of how many of the L are actually activated / triggered).

[0131] - Alt-3: Even if multiple (i.e., L) sub-configurations are set for the k-th CSI reporting setting, the N(k) value is considered to be N if N of the L are actually activated / triggered via MAC-CE or DCI.

[0132] - Alt-4: For Alt-2, Alt-3, Alt-5, or Alt-6, if there are sub-configurations that differ only in power offset (between CSI-RS and PDSCH) for the same CSI-RS resource, those sub-configurations are counted as 1. For example, if Alt-2 is applied to a configured CSI reporting setting, N(k) should ideally be 4, but in reality, sub-configurations #1 and #2 differ only in power offset, and sub-configurations #3 and #4 also differ only in power offset, so in this case, N(k) can be counted as 2. As another example, if only sub-configurations #1 / #2 are activated, and Alt-3 is applied, N(k) should be 2, but in reality, sub-configurations #1 and #2 differ only in power offset, so in this case, N(k) can be counted as 1.

[0133] - Alt-5: Multiple (i.e., L) sub-configurations can be set for the k-th CSI reporting setting (especially for SP-CSI reporting on PUSCH or AP-CSI reporting), and only M of these L can be activated via DCI. For example, a linked CSI reporting setting and (if multiple sub-configurations are set for that CSI reporting setting) a sub-configuration can be pre-configured / instructed for each code-point in the CSI request field on DCI, and the terminal can feed back CSI information corresponding to the CSI reporting setting and sub-configuration linked to the instructed code-point to the base station via the UL channel (e.g., PUSCH). In this case, the maximum number of sub-configurations from all code-points in the CSI request field linked to the k-th CSI reporting setting can be counted as the value N(k). For example, if the code-points of the CSI request field linked to the k-th CSI reporting setting, which has a total of four sub-configurations, are "001", "110", and "111", and "001" is linked to two sub-configurations within the k-th CSI reporting setting, "110" is linked to one sub-configuration within the k-th CSI reporting setting, and "111" is linked to three sub-configurations within the k-th CSI reporting setting, then the N(k) value can be determined to be 3.In other words, even if four sub-configurations are set up, the maximum number of sub-configurations triggered via DCI is three, so it is preferable to count only the corresponding number of CSI-RS resources. In this example, it is assumed that all four sub-configurations are linked to the CSI-RS resources, particularly in the case of type 1 SD and / or PD and / or type 1+PD adaptation. A similar method can be extended to type 2 SD or type 2 SD+PD adaptation. For example, if CSI-RS resource ID#1 is linked to only sub-configuration #0 / 1 of the four prerequisite sub-configurations, and the code-points of the CSI request field linked to the k-th CSI reporting setting, which has a total of four sub-configurations, are "001", "110", and "111", and "001" is linked to two sub-configurations (e.g., sub-configuration #0 / 2) within the k-th CSI reporting setting, "110" is linked to one sub-configuration (e.g., sub-configuration #2) within the k-th CSI reporting setting, and "111" is linked to three sub-configurations (e.g., sub-configuration #0 / 1 / 2) within the k-th CSI reporting setting, then the N(k) value can be determined to be 2.In other words, even if four sub-configurations are configured, the maximum number of sub-configurations that can be triggered via DCI and linked to the CSI-RS resource ID #1 is two (i.e., if the code-point in the CSI request field is "111", it is linked to sub-configuration #0 / 1), so it is preferable to count only the number of CSI-RS resources corresponding to this. This method can be applied only to P-CSI-RS resources and / or SP-CSI-RS resources (linked to AP-CSI reporting and / or SP-CSI reporting on PUSCH).

[0134] - Alt-6: Multiple (i.e., L) sub-configurations can be set for the k-th CSI reporting setting (especially for SP-CSI reporting on PUSCH or AP-CSI reporting), and only a subset of N of the L can be triggered via DCI (especially for SP-CSI reporting on PUCCH), and only a subset of N of the L can be activated via MAC-CE. When a particular terminal reports capability signaling that it supports a maximum of M sub-configurations that can be activated / triggered, it is preferable to consider only the maximum number of CSI-RS resources assuming M as the N(k) value. For example, in the case of type 1 SD and / or PD and / or type 1+PD adaptation, for the k-th CSI reporting setting with a total of 4 sub-configurations set, the min(M, "the number of sub-configurations linked to the CSI-RS resource (i.e., 4)") value can be determined as the N(k) value. For example, if M=2, even if four sub-configurations are set, the maximum number of sub-configurations that can be activated and / or triggered via MAC-CE and / or DCI is M=2, so it is preferable to count only the corresponding number of CSI-RS resources. A similar method can be extended to Type 2 SD or Type 2 SD+PD adaptations. For example, if CSI-RS resource ID#1 is linked only to sub-configuration #0 / 1 of the four presupposed sub-configurations, the min(M, "number of sub-configurations linked to the CSI-RS resource (i.e., 2)") value can be determined as the N(k) value for that CSI reporting setting.This method may be applied only to P-CSI-RS resources and / or SP-CSI-RS resources (linked to AP-CSI reporting and / or SP-CSI reporting on PUSCH / PUCCH).

[0135] - Alt-7: As shown in Table B below, if a particular CSI-RS resource is called via M sub-configurations out of X sub-configurations belonging to a single CSI report, that CSI-RS resource can be counted M times. In this case, X can mean the number of sub-configurations set in the CSI report for P / SP-CSI-RS, and the number of sub-configurations activated via DCI among the sub-configurations set in the CSI report for AP-CSI-RS.

[0136] As an example, the alt value can be determined to one of the above options depending on the capability of the terminal.

[0137] Next, we propose a method for counting the number of ports for a CSI-RS resource. If one CSI-RS resource is configured in X CSI reporting settings, and N(k) is defined as "the number of sub-configurations linked to the CSI-RS resource within each CSI reporting setting" × "the number of ports configured in the CSI-RS resource configuration", then the counting of the number of ports for a CSI-RS resource can be defined as N(1) + N(2) + ... + N(X). Here, N(1) means the product of "the number of sub-configurations linked to the CSI-RS resource in the 1st CSI-RS reporting setting (where the CSI-RS resource is configured)" and "the number of ports configured in the CSI-RS resource configuration", and N(X) means the product of "the number of sub-configurations linked to the CSI-RS resource in the Xth CSI-RS reporting setting (where the CSI-RS resource is configured)" and "the number of ports configured in the CSI-RS resource configuration". If there is no sub-configuration set for the k-th CSI-RS reporting setting, the N(k) value means "the number of ports set in that CSI-RS resource configuration". Specifically, the N(k) value, i.e., the number of sub-configurations linked to the CSI-RS resource, can be determined by one of the following alt methods, or a combination thereof, depending on the terminal capability, CSI reporting type (e.g., P / SP / AP CSI reporting), or CSI-RS resource type (e.g., P / SP / AP CSI-RS resource).

[0138] - Alt-A: Even if multiple sub-configurations are set or activated for the k-th CSI reporting setting (i.e., CSI-ReportConfig), the value of N(k) is always considered to be "the number of ports set in that CSI-RS resource configuration".

[0139] - Alt-B: If multiple (i.e., L) sub-configurations are set for the k-th CSI reporting setting, the N(k) value will always be considered as the product of L and "the number of ports set in the CSI-RS resource configuration" (regardless of how many of the L are actually activated / triggered).

[0140] - Alt-C: Even if multiple (i.e., L) sub-configurations are set for the k-th CSI reporting setting, if N of the L are actually activated / triggered via MAC-CE or DCI, the value of N(k) is considered to be the product of N and "the number of ports set in the CSI-RS resource configuration".

[0141] - Alt-D: With respect to Alt-B or Alt-C, if there are sub-configurations that differ only in power offset (between CSI-RS and PDSCH) for the same CSI-RS resource, those sub-configurations can be considered as a single sub-configuration. For example, when Alt-B is applied to the CSI reporting setting to be configured, N(k) = 4 × 16, but in reality, sub-configurations #1 and #2 differ only in power offset, and sub-configurations #3 and #4 also differ only in power offset, so in this case, N(k) can be counted as 2 × 16. As another example, when only sub-configurations #1 / 2 are activated, when Alt-C is applied, N(k) = 2 × 16, but in reality, sub-configurations #1 and #2 differ only in power offset, so in this case, N(k) can be counted as 16.

[0142] - Alt-E: When applying Alt-B, Alt-C, Alt-D, or Alt-F, if port subset indication information (i.e., bitmap information regarding port on / off) is set for a specific sub-configuration, such as type 1 SD or type 1 SD+PD adaptation, the number of ports set in the CSI-RS resource configuration can be replaced with the number of ports that are marked as on in the bitmap information. For example, if Alt-B is applied to the CSI reporting setting, N(k) = 4 × 16, but bitmap information is set for sub-configurations #3 and #4, and it is signaled that only 8 ports are on, so in this case, N(k) can be counted as 2 × 16 + 2 × 8. As another example, if only sub-configuration#1 / 3 is activated, applying Alt-C would result in N(k) = 2 × 16. However, in reality, bitmap information is set for sub-configuration#3, signaling that only 8 ports are on. In this case, N(k) can be counted as 16 + 8.

[0143] - Alt-F: Multiple (i.e., L) sub-configurations can be set for the k-th CSI reporting setting (especially for SP-CSI reporting on PUSCH or AP-CSI reporting), and only M of these L can be activated via DCI. For example, for each code-point in the CSI request field on DCI, the associated CSI reporting setting and (if multiple sub-configurations are set for that CSI reporting setting) the sub-configurations can be pre-configured / instructed, and the terminal can feed back CSI information corresponding to the CSI reporting setting and sub-configurations associated with the instructed code-point to the base station via the UL channel (e.g., PUSCH). In this case, the N(k) value can be determined by either the product of the "maximum number of sub-configurations" and the "number of ports set in the CSI-RS resource configuration" among all the code-points in the CSI request field linked to the k-th CSI reporting setting, or by the maximum value of the "total number of ports in the on state set in the sub-configurations linked to each code-point (or the total number of antenna ports signaled as "1" in the bitmap)" (and the number of ports set in the CSI-RS resource configuration).For example, the code-points of the CSI request field associated with the k-th CSI reporting setting, which has a 16-port CSI-RS resource and a total of four sub-configurations (signaled by antenna port subset indication / bitmap that all 16 antenna ports are on in sub-configuration#0, only 8 antenna ports are on in sub-configuration#1, only 4 antenna ports are on in sub-configuration#2, and only 2 antenna ports are on in sub-configuration#3), are "001", "110", and "111". "001" is associated with two sub-configurations within the k-th CSI reporting setting (e.g., sub-configuration#1 / 3), "110" is associated with one sub-configuration within the k-th CSI reporting setting (e.g., sub-configuration#0), and "111" is associated with the k-th CSI reporting setting. If three sub-configurations within a setting (e.g., sub-configuration#1 / 2 / 3) are linked, the N(k) value can be determined to be 3 × 16. In other words, even if four sub-configurations are set, the maximum number of sub-configurations that can be triggered via DCI is three, so it is preferable to count only the number of ports of the corresponding CSI-RS resource.Alternatively, if we consider the N(k) value to be the maximum of "the sum of the number of ports in the on state set for each code-point in the linked sub-configuration (or the sum of the number of antenna ports signaled with "1" in the bitmap)" (and the number of ports set in the CSI-RS resource configuration) among all code-points in the linked CSI request field, then the N(k) value can be determined as max{8+2, 16, 8+4+2}=16. If the value determined by this max expression is smaller than the number of ports set in the CSI-RS resource configuration, the final N(k) value can be determined as the number of ports set in the CSI-RS resource configuration. In this example, it is assumed that all four sub-configurations, such as type 1 SD and / or PD and / or type 1+PD adaptation, are set in conjunction with the CSI-RS resource. A similar method can be extended to Type 2 SD or type 2 SD+PD adaptation.For example, if the code-points of the CSI request field linked to the k-th CSI reporting setting, which has a total of four sub-configurations set up, are "001", "110", and "111", and "001" is linked to two sub-configurations in the k-th CSI reporting setting (e.g., sub-configuration#0 / 2), "110" is linked to one sub-configuration in the k-th CSI reporting setting (e.g., sub-configuration#2), and "111" is linked to three sub-configurations in the k-th CSI reporting setting (e.g., sub-configuration#0 / 1 / 2), then the N(k) value can be determined to be 16 × 2 = 32. In other words, even if four sub-configurations are configured, the maximum number of sub-configurations that can be triggered via DCI and are linked to CSI-RS resource ID#1 is two (i.e., if the code-point in the CSI request field is "111", it is linked to sub-configuration#0 / 1), so it is preferable to count only the product of the corresponding number of CSI-RS resources and the number of antenna ports. This method can be applied only to P-CSI-RS resources and / or SP-CSI-RS resources (linked to AP-CSI reporting and / or SP-CSI reporting on PUSCH).

[0144] - Alt-G: For the k-th CSI reporting setting, multiple (i.e., L) sub-configurations are set (especially for SP-CSI reporting on PUSCH or AP-CSI reporting), and only a subset of N of the L can be triggered via DCI, and (especially for SP-CSI reporting on PUCCH) only a subset of N of the L can be activated via MAC-CE. When a particular terminal reports capability signaling that it supports a maximum of M sub-configurations that can be activated / triggered, it is preferable to consider only the maximum number of CSI-RS ports assuming M as the N(k) value. As an example, in the case of type 1 SD and / or PD and / or type 1 SD+PD adaptation, we assume a k-th CSI reporting setting configured with a 16-port CSI-RS resource and a total of 4 sub-configurations (signaled via antenna port subset indication or bitmap that all 16 antenna ports are on in sub-configuration#0, only 8 antenna ports are on in sub-configuration#1, only 4 antenna ports are on in sub-configuration#2, and only 2 antenna ports are on in sub-configuration#3). For the k-th CSI reporting setting configured with a total of 4 sub-configurations, the maximum value of the sum of the number of antenna ports associated with min(M, "the number of sub-configurations associated with the CSI-RS resource (i.e., 4)") can be determined as the N(k) value.For example, if M=2, even if four sub-configurations are set, the maximum number of sub-configurations that can be activated and / or triggered via MAC-CE and / or DCI is M=2, so it is preferable to count only the maximum number of CSI-RS ports that can accommodate this, which is 16+8=24. If the resulting value is smaller than the number of antenna ports set for the CSI-RS resource, the N(k) value can be ultimately determined as the number of antenna ports set for the CSI-RS resource. A similar method can be extended to Type 2 SD or Type 2 SD+PD adaptation. For example, if CSI-RS resource ID#1 is linked only to sub-configuration#0 / 1 of the four prerequisite sub-configurations, the N(k) value can be determined by the product of min(M, "the number of sub-configurations linked to the CSI-RS resource (i.e., 2)") and the antenna ports set for the CSI-RS resource. If the resulting value is smaller than the number of antenna ports configured for the CSI-RS resource, the N(k) value can be ultimately determined as the number of antenna ports configured for the CSI-RS resource. This method is applicable only to P-CSI-RS resources and / or SP-CSI-RS resources (which are linked to AP-CSI reporting and / or SP-CSI reporting on PUSCH / PUCCH).

[0145] - Alt-H: As shown in Table B below, when a particular CSI-RS resource is called through M out of X sub-configurations belonging to one CSI reporting, the CSI-RS port is counted in different ways according to type 1 SD or type 2 SD or PD adaptation. In the case of type 1 SD adaptation (or when at least one sub-configuration is type 1 SD or type 1 SD+PD adaptation, or when a bitmap-based port subset indication is set for at least one sub-configuration), max(Σ s=1 M P sIn the case of Type 2 SD adaptation, PD adaptation, or Type 2 SD+PD adaptation (or when no bitmap-based port subset indication is set for any sub-configuration, or when a CSI-RS resource ID list is set for at least one sub-configuration), the number of CSI-RS ports that can be counted is determined by the M×P formula, where P is the number of antenna ports set for the CSI-RS resource, and Ps is the number of "1"s (or the number of antenna ports that are on) in the bitmap that signals the port subset indication set for the sub-configuration index s. If the bitmap is not set for the sub-configuration index s, then Ps = P. In the case of Type 2 SD adaptation, PD adaptation, or Type 2 SD+PD adaptation (or when no bitmap-based port subset indication is set for any sub-configuration, or when a CSI-RS resource ID list is set for at least one sub-configuration), the number of CSI-RS ports that can be counted is determined by the M×P formula, where P is the number of antenna ports set for the CSI-RS resource. Here, X can represent the number of sub-configurations set in the CSI report for P / SP-CSI-RS, and the number of sub-configurations activated via DCI among the sub-configurations set in the CSI report for AP-CSI-RS.

[0146] The text proposals reflecting the aforementioned Alt-6 and Alt-G are shown in Table 7 below. Furthermore, for type 1 SD and / or PD and / or type 1 SD+PD adaptations, we assumed a configuration constraint in which a smaller sub-configuration index value enables more antenna ports.

[0147] [Table 7]

[0148] JPEG2026528927000022.jpg192137JPEG2026528927000023.jpg17135

[0149] JPEG2026528927000024.jpg241170JPEG2026528927000025.jpg36169

[0150] JPEG2026528927000026.jpg191137JPEG2026528927000027.jpg33134

[0151] JPEG2026528927000028.jpg11168

[0152] Alternatively, text proposals that reflect the aforementioned Alt-6 and Alt-G are shown in Table 8 below.

[0153] [Table 8]

[0154] JPEG2026528927000030.jpg178169

[0155] Table 9 is an excerpt of the items that will be reflected in the 3GPP TS38.214 document based on agreements reached in recent NR standardization discussions (R1-2308743).

[0156] [Table 9]

[0157] JPEG2026528927000032.jpg237170JPEG2026528927000033.jpg29169

[0158] JPEG2026528927000034.jpg242169JPEG2026528927000035.jpg39168

[0159] JPEG2026528927000036.jpg239169JPEG2026528927000037.jpg24168

[0160] JPEG2026528927000038.jpg230169

[0161] JPEG2026528927000039.jpg141169

[0162] On the other hand, the terminal can report the number of CSI-RS resources that can be configured simultaneously for the CC / BWP or the overall CC / BWP as Y. If, using one or a combination of the above alt methods, it is determined that a CSI-RS resource corresponding to one CSI-RS resource is counted K times (for a CSI report configuration in which one or more sub-configurations are configured), then when K is greater than Y, the terminal will count the CSI-RS resource only Y times, and the terminal can expect that at a given time, the CSI-RS resource will be counted a maximum of Y times, as only a portion of the sub-configuration containing the CSI-RS resource is triggered / activated via DCI / MAC-CE, etc. This proposal can be applied to CSI-RS resources linked to SP-CSI and / or AP-CSI reporting.

[0163] Alternatively, the terminal can report the number of antenna ports for the CSI-RS resource that can be configured simultaneously for the CC / BWP or the overall CC / BWP as Y. If, using one or a combination of the above methods, it is determined that the antenna port corresponding to one CSI-RS resource is counted K times (for a CSI report capability with one or more sub-configurations configured), then when K is greater than Y, the terminal will count the antenna port for that CSI-RS resource only Y times, and the terminal can expect that at a given time, the number of antenna ports for the CSI-RS resource will be counted at most Y times, as only a portion of the sub-configuration containing that CSI-RS resource is triggered / activated via DCI / MAC-CE, etc. This proposal is applicable to CSI-RS resources linked to SP-CSI and / or AP-CSI reporting.

[0164] As an example, the alt value can be determined by one of the above-mentioned alt values, depending on the capability of the terminal.

[0165] [Proposal #2] Method for checking CPU usage and CSI processing time for CSI reports with one or more sub-configurations set.

[0166] Table 10 is an excerpt from Table 9 (R1-2308743).

[0167] [Table 10]

[0168] JPEG2026528927000041.jpg245170JPEG2026528927000042.jpg14168

[0169] JPEG2026528927000043.jpg146169

[0170] Condition #1 in Table 10 above means that all CPUs will be occupied if a considerable number of conditions are met, including {maximum SCS of 120kHz SCS, aperiodic CSI on CSI-only PUSCH triggered by UL grant, L=0 CPU occupied, number of CSI-RS resources set in the CSI report is 1, number of antenna ports set in that CSI-RS resource is a maximum of 4, type-1 codebook or non-PMI setting}. When one or more sub-configurations are set for a single CSI report configuration for NES purposes, it may become unclear whether the condition {number of CSI-RS resources set in the CSI report is 1, number of antenna ports set in that CSI-RS resource is a maximum of 4} is satisfied.

[0171] First, when determining whether the condition "the number of CSI-RS resources set in the CSI report is 1" is met, the following can be considered.

[0172] - For Periodic CSI (P-CSI) reporting, the condition "the number of CSI-RS resources set in the CSI report is 1" can be considered satisfied only if the total number of CSI-RS resources associated with each of the L sub-configurations set for the CSI report configuration, and for semi-persistent CSI (SP-CSI) or aperiodic CSI (AP-CSI) reporting, N sub-configurations activated / triggered via MAC-CE / DCI, is 1. Specifically, in the case of type 1 SD or PD or type 1 SD+PD adaptation, this can be limited to cases where only a single CSI-RS resource is set for CMR use within the CSI report configuration, and only a single sub-configuration is set (for P-CSI reporting), or only a single sub-configuration is activated / triggered (for SP-CSI reporting and / or AP-CSI reporting). Alternatively, for type 2 SD or type 2 SD+PD adaptation, it may be limited to the case where only a single sub-configuration is configured (for P-CSI reporting), or where only a single sub-configuration is activated / triggered (for SP-CSI reporting and / or AP-CSI reporting), and the number of CSI-RS resources associated with that sub-configuration is one.

[0173] Similarly, when determining whether the condition "the maximum number of antenna ports configured for the CSI-RS resource is 4" is met, the following can be considered.

[0174] - For P-CSI reporting, the condition "the number of antenna ports configured on the CSI-RS resource is a maximum of 4" can be considered satisfied only if the number of antenna ports associated with each of the L sub-configurations set for the CSI report configuration, or for SP-CSI or AP-CSI reporting, the number of sub-configurations activated / triggered via MAC-CE / DCI, is a maximum of 4. Specifically, in the case of type 1 SD or type 1 SD+PD adaptation, this can be limited to cases where the number of antenna ports (or antenna ports configured on the linked CSI-RS resource if not configured) based on the port subset indication information set for the sub-configuration (for P-CSI reporting) or the sub-configuration activated / triggered (for SP-CSI reporting and / or AP-CSI reporting) is 4 or less. Alternatively, for type 2 SD or PD or type 2 SD+PD adaptations, this may be limited to cases where the number of antenna ports provided by the CSI-RS resource settings configured in the CSI report configuration is four or less.

[0175] Furthermore, if one or more sub-configurations are set for a single CSI report configuration for NES purposes, condition #1 in Table 10 is not always satisfied, and constraints can be added to ensure that it only meets the NES conditions.

[0176] Table 11 is an excerpt from the conventional NR standard document, TS 38.214 v17.6.0.

[0177] [Table 11]

[0178] JPEG2026528927000045.jpg227170

[0179] JPEG2026528927000046.jpg237169JPEG2026528927000047.jpg14169

[0180] JPEG2026528927000048.jpg184169

[0181] Referring to Table 11, the terminal determines whether the conditions for a valid CSI report are met based on the Z and Z' values.

[0182] The Z value relates to the time elapsed from the last symbol of the PDCCH that triggers the CSI report to the first symbol of the CSI report. Specifically, the terminal calculates Zref based on the Z value. To meet the requirements for a valid CSI report, the time elapsed from the end of the last symbol of the PDCCH that triggers the CSI report to the start of the CP of the first symbol of the CSI report must be at least equal to or greater than Zref. Otherwise, it is not a valid CSI report, and the terminal may not perform the CSI report requested by that PDCCH.

[0183] The Z' value relates to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Specifically, the terminal calculates Z'ref based on the Z' value. To meet the requirements for a valid CSI report, the time elapsed from the end of the last symbol of the CSI-RS resource to the start of the CP of the first symbol of the CSI report must be at least equal to or greater than Z'ref. Otherwise, it is not a valid CSI report, and the terminal may not execute the CSI report.

[0184] Condition #1 in Table 11 means that feedback can be provided in a relatively short time if a considerable number of conditions are met, such as {maximum SCS of 120kHz SCS, aperiodic CSI on CSI-only PUSCH triggered by UL grant, L=0 CPU occupied, 1 CSI-RS resource set in the CSI report, a maximum of 4 antenna ports set in that CSI-RS resource, and type-1 codebook or non-PMI setting}. Also, condition #2 in Table 11 means that feedback can be provided in a relatively short time (slightly slower than in the case of condition #1) if the conditions {wideband CQI / PMI, 1 CSI-RS resource set in the CSI report, a maximum of 4 antenna ports set in that CSI-RS resource, and type-1 codebook or non-PMI setting} are met. If one or more sub-configurations are set for a single CSI report configuration for NES purposes, it may become unclear whether the following conditions are met: {the number of CSI-RS resources set in the CSI report is 1, and the number of antenna ports set in that CSI-RS resource is a maximum of 4}.

[0185] First, when determining whether the condition "the number of CSI-RS resources set in the CSI report is 1" is met, the following can be considered.

[0186] - For Periodic CSI (P-CSI) reporting, the condition "the number of CSI-RS resources set in the CSI report is 1" can be considered satisfied only if the total number of CSI-RS resources associated with each of the L sub-configurations set for the CSI report configuration, or for semi-persistent CSI (SP-CSI) or aperiodic CSI (AP-CSI) reporting, the total number of CSI-RS resources associated with each of the N sub-configurations activated / triggered via MAC-CE / DCI, is 1. Specifically, in the case of type 1 SD or PD or type 1 SD+PD adaptation, this is limited to cases where only a single CSI-RS resource is set for CMR use within the CSI report configuration, and only a single sub-configuration is set (for P-CSI reporting), or only a single sub-configuration is activated / triggered (for SP-CSI reporting and / or AP-CSI reporting). Alternatively, with respect to type 2 SD or type 2 SD+PD adaptation, only a single sub-configuration may be configured (for P-CSI reporting), or only a single sub-configuration may be activated / triggered (for SP-CSI reporting and / or AP-CSI reporting), and the number of CSI-RS resources associated with that sub-configuration may be limited to one.

[0187] Similarly, when determining whether the condition "the maximum number of antenna ports configured for the CSI-RS resource is 4" is met, the following can be considered.

[0188] - With regard to P-CSI reporting, the condition "the number of antenna ports configured on the CSI-RS resource is a maximum of 4" can be considered satisfied only if the number of antenna ports associated with each of the L sub-configurations configured for the CSI report configuration, or with regard to SP-CSI or AP-CSI reporting, the number of antenna ports associated with each of the N sub-configurations activated / triggered via MAC-CE / DCI, is a maximum of 4. Specifically, in the case of type 1 SD or type 1 SD+PD adaptation, this can be limited to cases where the number of antenna ports (or, if not configured, the antenna ports configured on the linked CSI-RS resource) based on the port subset indication information configured for the sub-configuration configured (for P-CSI reporting) or the sub-configuration activated / triggered (for SP-CSI reporting and / or AP-CSI reporting) is 4 or less. Alternatively, with regard to type 2 SD or PD or type 2 SD+PD adaptation, this can be limited to cases where the number of antenna ports provided by the configuration of the CSI-RS resource configured for the CSI report configuration is 4 or less.

[0189] Alternatively, if one or more sub-configurations are set for a single CSI report configuration for NES purposes, condition #1 in Table 11 may not always be satisfied, and a constraint may be imposed so that only condition #2 or condition #3 applies, or conditions #1 and #2 in Table 11 may not always be satisfied, and a constraint may be imposed so that only condition #3 applies.

[0190] If the CSI report configuration includes a list of sub-configurations, ambiguity issues can arise in determining (Z, Z'). If determining (Z, Z') simply involves checking whether each sub-configuration satisfies condition #1, condition #2, etc., this can result in an excessive processing load on the terminal when determining the (Z, Z') combination.

[0191] Here, (i) the (Z, Z') value according to condition #1 (i.e., the (Z1, Z1') value in Table 5.4-1) is smaller than the (Z, Z') value according to condition #2 (i.e., the (Z1, Z1') value in Table 5.4-2), and (ii) the (Z, Z') value according to condition #2 (i.e., the (Z1, Z1') value in Table 5.4-2) is smaller than the (Z, Z') value according to condition #3 (i.e., the (Z2, Z2') value in Table 5.4-2). Therefore, using the (Z, Z') value according to condition #3, which ensures the most lenient CSI processing time, has the advantage that the terminal can secure CSI processing time without having to check whether condition #1 or condition #2 is satisfied for each sub-configuration.

[0192] In other words, even if CSI calculation is possible for some sub-configurations by only ensuring CSI processing time that conforms to condition #1 (or condition #2), other sub-configurations may require CSI processing time that conforms to condition #3. In such situations, checking all conditions for each sub-configuration and determining the (Z, Z') value according to a specific sub-configuration that requires the largest (Z, Z') value among these sub-configurations in order to use the minimum (Z, Z') value has the disadvantage of increasing the processing overhead of the terminal. To solve this problem, it is proposed to use a relatively large (Z, Z') value that conforms to condition #3, which satisfies all sub-configurations without the need for individual checks.

[0193] On the other hand, reporting "ssb-Index-SINR", "cri-SINR", "ssb-Index-SINR-Index", or "cri-SINR-Index" in Table 11 is related to beam management.That is, (i) if the reportQuantity of the transmitted CSI corresponds to a wideband frequency granularity where the reportQuantity is set to 'ssb-Index-SINR', 'cri-SINR', 'ssb-Index-SINR-Index', or 'cri-SINR-Index', then (Z1, Z1') of Table 5.4-2, or (the (Z1, Z1') of the table 5.4-2 if the CSI to be transmitted corresponds to wideband frequency granularity where the reportQuantity is set to 'ssb-Index-SINR', 'cri-SINR', 'ssb-Index-SINR-Index', or 'cri-SINR-Index') and (ii) if the reportQuantity is set to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index', or 'ssb-Index-RSRP-Index', then (Z3, Z3') of Table 5.4-2, where Xμ is the capability reported by the UE. The following conditions relate to beam management: '(Z3,Z3') of the table 5.4-2 if reportQuantity is set to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-RSRP-Index' or 'ssb-Index-RSRP-Index', where Xμ is according to UE reported capability beamReportTiming and KBl is according to UE reported capability beamSwitchTiming as defined in [13,TS 38.306], or)'. However, since the current NES operation does not apply to beam management, there is no need to consider whether the sub-configuration configured for the NES satisfies the conditions for beam management, and condition #3 can be applied directly.More precisely, when a CSI reporting configuration including a list of sub-configurations is configured on a terminal, the terminal does not expect the higher-level parameter reportQuantity to be set to "cri-RSRP", "cri-SINR", "cri-SINR-Index", "cri-RSRP-Index", "none", "ssb-Index-RSRP", "ssb-Index-SINR", "ssb-Index-RSRP-Index", "ssb-Index-SINR-Index", or "tdcp". Therefore, when a CSI reporting configuration including a list of sub-configurations is configured on a terminal, the terminal does not need to consider whether the conditions that apply when reportQuantity is set to "cri-RSRP", "ssb-Index-RSRP", "cri-RSRP-Index", or "ssb-Index-RSRP-Index", "ssb-Index-SINR", "cri-SINR", "ssb-Index-SINR-Index", or "cri-SINR-Index" are met, and can directly apply condition #3.

[0194] Figure 8 illustrates the CSI calculation time and effective CSI reporting determination for one embodiment. For the sake of explanation, conditions related to beam management are excluded (or assumed not to be satisfied) in Figure 8.

[0195] Referring to Figure 8, the terminal can employ different (Z, Z') determination methods depending on whether the CSI reporting configuration includes sub-configurations (805). As explained above, determining the (Z, Z') value using only condition #3 can be limited to cases where the CSI reporting configuration includes a sub-configuration (list). In other words, if the CSI reporting configuration does not include a sub-configuration (list), the terminal can check whether the conditions including conditions #1 and #2 are satisfied, as in the conventional method, and if the other conditions are not met, the (Z, Z') value can be determined based on condition #3.

[0196] For example, if the terminal does not include a sub-configuration (list) and condition #1 is met, the (Z, Z') value can be determined based on the first (Z1, Z1') (810 Y, 815). Note that the first (Z1, Z1') can mean (Z1, Z1') in Table 5.4-1 included in Table 11.

[0197] For example, if the terminal does not include a sub-configuration (list) and condition #2 is met, the (Z, Z') value can be determined based on the second (Z1, Z1') (820 Y, 825). Note that the second (Z1, Z1') can mean (Z1, Z1') in Table 5.4-2 included in Table 11.

[0198] Conditions #1 and #2 may each be conditions relating to a CSI where there are no more than 4 CSI-RS ports per single resource. Specifically, condition #1 may mean that when max{μPDCCH,μCSI-RS,μUL}≦3 and L=0CPU is occupied (as per section 5.2.1.6), the CSI is triggered without a PUSCH containing a transmission block or HARQ-ACK or both, the transmitted CSI is a single CSI, corresponds to wideband frequency granularity, the CSI corresponds to a maximum of 4 CSI-RS ports on a single resource without CRI reporting, and CodebookType is set to "typeI-SinglePanel" or reportQuantity is set to "cri-RI-CQI". Condition #2 may mean that the transmitted CSI corresponds to a wideband frequency granularity, corresponds to a maximum of four CSI-RS ports in a single resource without CRI reporting, and that the CodebookType is set to "typeI-SinglePanel" or the reportQuantity is set to "cri-RI-CQI".

[0199] If the terminal does not include a sub-configuration (list) and neither condition #1 nor condition #2 is met, it can determine (Z, Z') based on (Z2, Z2') in Table 5.4-2 (820 N, 830).

[0200] Furthermore, if the CSI reporting settings include a sub-configuration (list), the terminal can determine (Z, Z') based solely on (Z2, Z2') in Table 5.4-2 (805 Y, 830).

[0201] The terminal can determine whether the requirements for a valid CSI report are met based on the determined (Z, Z') (835). Specifically, the terminal can determine (Zref, Z'ref) based on the determined (Z, Z'). If the interval from the end of the last symbol of the PDCCH triggering the CSI report to the start of the CP of the first symbol of the CSI report is greater than or equal to Zref, and the interval from the end of the last symbol of the CSI-RS resource to the start of the CP of the first symbol of the CSI report is greater than or equal to Z'ref, the terminal determines that the requirements for a valid CSI report are met and can perform the CSI report. Otherwise, the terminal determines that the requested CSI report is not valid and may not perform it.

[0202] As an example, it can be defined as a standard, as shown in Table 12 below.

[0203] [Table 12]

[0204] JPEG2026528927000050.jpg185169

[0205] [Proposal #3] Defining CPU occupancy intervals for CSI reporting with one or more sub-configurations set.

[0206] Table 13 is an excerpt from the previous NR standard document, TS 38.214 v17.6.0.

[0207] [Table 13]

[0208] JPEG2026528927000052.jpg238170JPEG2026528927000053.jpg14168

[0209] JPEG2026528927000054.jpg92168

[0210] According to Table 13 above, for cases #1 / 2 / 3 (in the case of a CSI report configuration with one or more sub-configurations), it may be unclear which resource is the linked CSI-RS resource.

[0211] - For the P-CSI report, a CPU-occupied interval can be defined as in case #1 above, targeting only the CSI-RS resources linked to the configured L sub-configurations.

[0212] - For SP-CSI reports, a CPU occupancy interval can be defined as in case #1 / 2 above, targeting only the CSI-RS resources linked to the N sub-configurations activated / triggered by MAC CE (for SP-CSI report on PUCCH) or DCI (for SP-CSI report on PUSCH) out of the configured L sub-configurations.

[0213] - For the AP-CSI report, a CPU-occupied interval can be defined as in case #3 above, targeting only the CSI-RS resources linked to the N sub-configurations triggered by DCI out of the L configured sub-configurations.

[0214] This method can only be applied in the case of type 2 SD or SD+PD adaptation (i.e., when only a subset of the CSI-RS resources linked to the CSI report configuration can be linked within a single sub-configuration).

[0215] [Proposal #4] Validation check and CSI reporting method for CSI reports with one or more sub-configurations set

[0216] Table 14 is an excerpt from the conventional NR standard document, TS 38.214 v17.6.0.

[0217] [Table 14]

[0218] JPEG2026528927000056.jpg222169

[0219] As explained in Table 14 above, when the CSI processing time and the resulting terminal operation can be defined, the following issues may exist for a CSI report configuration with one or more sub-configurations, and the solutions for each issue are as follows.

[0220] - Issue 1: Validation check method for CSI report

[0221] When multiple sub-configurations are configured (for P-CSI reporting), or when multiple sub-configurations are activated / triggered (for SP / AP-CSI reporting), the validation check can be performed individually for each sub-configuration. Alternatively, it can be configured separately whether to perform the check for each sub-configuration or for each CSI report, as before.

[0222] - Clarification regarding CSI-RS resources that can be involved in determining the starting point of Unova 2:Z'.

[0223] For AP-CSI reports, the starting point of Z' can be determined by targeting only the CSI-RS resources that are linked to the N sub-configurations triggered by DCI out of the L configured sub-configurations.

[0224] - Unova 3: Handling when Z'timeline is not met

[0225] (i) If multiple sub-configurations are activated and the Z'timeline is satisfied for some sub-configurations (these sub-configurations will be referred to as valid sub-configurations for convenience), but the Z'timeline is not satisfied for other sub-configurations (these sub-configurations will be referred to as invalid sub-configurations for convenience), Opt1) The terminal can drop / omit the CSI information corresponding to the invalid sub-configurations and report to the base station with only the CSI information corresponding to the valid sub-configurations. Or Opt2) The terminal can report to the base station the CSI information corresponding to all sub-configurations, but the CSI information corresponding to the invalid sub-configurations will not be updated from the previous report, or it may include a default value (in this invention, the default value means a value set in advance by the base station or a predefined value, which may be the lowest CQI / PMI value as an example).

[0226] (ii) Even if multiple sub-configurations are activated and the Z'timeline is satisfied for some sub-configurations (referred to as valid sub-configurations for convenience), but the Z'timeline is not satisfied for other sub-configurations (referred to as invalid sub-configurations for convenience), the entire CSI report can be handled in the same way as when the conventional Z'timeline is not satisfied (i.e., the UE may ignore the scheduling DCI if the number of triggered reports is one and no HARQ-ACK or transport block is multiplexed on the PUSCH. Otherwise, the UE is not required to update the CSI for the nth triggered CSI report).

[0227] (iii) The solution to the issue is applicable only if a validity check is performed individually for each sub-configuration in issue 1.

[0228] This method is only applicable to type 2 SD or SD+PD adaptations (i.e., when only a subset of the CSI-RS resources linked to the CSI report configuration can be linked within a single sub-configuration).

[0229] Figure 9 shows an example of the operation of a terminal and network according to one embodiment.

[0230] Referring to Figure 9, the terminal can receive a CSI reporting setting containing a list of one or more sub-configurations from the network via higher-level signaling (905).

[0231] The terminal can calculate the CSI based on the proposed CPU occupation, CSI-RS resource / port counting, and / or CSI processing time method (910).

[0232] The terminal can send the CSI calculated based on the CSI reporting setting to the network (915).

[0233] Figure 10 shows an example of a non-periodic CSI report according to one embodiment.

[0234] The terminal can receive CSI reporting settings from the network via higher-level signaling (A05). It is assumed that at least one of the CSI reporting settings includes a list of sub-settings. Each sub-setting can individually configure at least one of the following: a CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information.

[0235] The terminal can receive CSI requests from the network (A10). CSI requests can be received via DCI included in PDCCH. CSI requests may request the transmission of CSI reports aperiodicly based on a CSI reporting configuration that includes a list of sub-configurations.

[0236] The terminal can determine the validity of the requested non-periodic CSI report (A15). The terminal can determine (Z, Z') and, based on this, determine (Zref, Z'ref). Based on the determined (Zref, Z'ref), the terminal can determine the validity of the requested non-periodic CSI report. The Z value (and / or Zref) may relate to the time length from the end of the last symbol of the PDCCH to the start of the CP of the first symbol of the CSI report. The Z' value (and / or Z'ref) may relate to the time length from the end of the last symbol of the CSI-RS resource to the start of the CP of the first symbol of the CSI report.

[0237] The terminal can determine the Z and Z' values ​​based solely on Z2 and Z2' in Table 5.4-2 included in Table 11, given that aperiodic CSI reporting is associated with CSI reporting settings that include a list of sub-settings.

[0238] The terminal can calculate and report the CSI if it determines that the requested aperiodic CSI report is valid (A20, A25). The aperiodic CSI report can be transmitted via PUSCH.

[0239] Figure 11 shows the terminal operation flow according to one embodiment.

[0240] Referring to Figure 11, the terminal can receive CSI (channel state information) reporting settings via higher-level signaling (B05).

[0241] The terminal can receive DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel) (B10).

[0242] The terminal may transmit a CSI report related to the CSI request based on the conditions for a valid CSI report being met (B15).

[0243] The terminal can determine, based on the Z value and Z' value, whether the conditions for a valid CSI report are met. The Z value may relate to the time elapsed from the last symbol of the PDCCH to the first symbol of the CSI report, and the Z' value may relate to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report.

[0244] Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: the CSI codebook, the enablement of a CSI-RS (channel state information-reference signal) antenna port subset, the CSI-RS resource subset, or power offset information, the terminal can determine the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

[0245] Based on the fact that the CSI reporting setting includes the list of sub-settings, the terminal can exclude the first (Z, Z')-candidate values ​​and the second (Z, Z')-candidate values ​​for each of the multiple conditions related to CSI up to 4 CSI-RS ports for a single resource, and determine the Z value and the Z' value based only on the third (Z, Z')-candidate value.

[0246] The aforementioned conditions include a first condition, which can be satisfied if (i) the neurology associated with the subcarrier spacing (SCS) is below a threshold, (ii) CSI is triggered when zero CPUs (CSI processing units) are occupied, (iii) the physical uplink shared channel (PUSCH) for sending the CSI report does not include either a transmission block or a HARQ-ACK, (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), is no more than four CSI-RS ports for a single resource, and has a wideband frequency granularity, and (v) the codebook type is single panel or the report content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

[0247] The aforementioned conditions include a second condition, which can be satisfied if (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), has no more than 4 CSI-RS ports for a single resource, and has wideband frequency granularity, and (v) the codebook type is single panel or the report content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

[0248] The plurality of (Z, Z')-candidate values ​​may include a first (Z, Z')-candidate value, a second (Z, Z')-candidate value greater than the first (Z, Z')-candidate value for the same neurology, and a third (Z, Z')-candidate value greater than both the first (Z, Z')-candidate value and the second (Z, Z')-candidate value for the same neurology. Based on the fact that the CSI reporting setting includes the list of sub-settings, the terminal may determine the Z value and the Z' value based solely on the third (Z, Z')-candidate value.

[0249] The Z value may relate to the time length from the end of the last symbol of the PDCCH to the start of the cyclic prefix (CP) of the first symbol of the CSI report, and the Z' value may relate to the time length from the end of the last symbol of the CSI-RS resource to the start of the cyclic prefix (CP) of the first symbol of the CSI report.

[0250] Based on the fact that the CSI reporting setting includes the list of sub-settings, the terminal can determine the Z value and the Z' value based only on Z2 and Z2' of Table 5.4-2 included in Table 11.

[0251] Figure 12 shows the operation flow of a base station according to one embodiment.

[0252] Referring to Figure 12, the base station can transmit CSI (channel state information) reporting settings via higher-level signaling (C05).

[0253] The base station can transmit DCI (downlink control information) containing information for CSI requests via the PDCCH (physical downlink control channel) (C10).

[0254] The base station may receive a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met (C15).

[0255] Based on the Z and Z' values, it can be determined whether the conditions for a valid CSI report are met. The Z value may relate to the time elapsed from the last symbol of the PDCCH to the first symbol of the CSI report, and the Z' value may relate to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report.

[0256] Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: the CSI codebook, the enablement of a CSI-RS (channel state information-reference signal) antenna port subset, the CSI-RS resource subset, or power offset information: the Z value and the Z' value can be determined based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

[0257] Based on the fact that the CSI reporting setting includes the list of sub-settings, the base station can exclude the first (Z, Z')-candidate values ​​and the second (Z, Z')-candidate values ​​for each of the multiple conditions related to CSI up to 4 CSI-RS ports for a single resource, and determine the Z value and the Z' value based only on the third (Z, Z')-candidate value.

[0258] The aforementioned multiple conditions include a first condition, which can be satisfied if (i) the neuraly related to the subcarrier spacing (SCS) is below a threshold, (ii) CSI is triggered when zero CPUs (CSI processing units) are occupied, (iii) the physical uplink shared channel (PUSCH) for sending the CSI report does not include either a transmission block or a HARQ-ACK, (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), is no more than four CSI-RS ports for a single resource, and has a wideband frequency granularity, and (v) the codebook type is single panel or the report content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

[0259] The plurality of conditions includes a second condition, and the second condition can be satisfied when (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), is four or less CSI-RS ports for a single resource, and has a wideband frequency granularity, and (v) the codebook type is a single panel or the reported content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

[0260] The plurality of (Z, Z’)-candidate values can include a first (Z, Z’)-candidate value, a second (Z, Z’)-candidate value greater than the first (Z, Z’)-candidate value for the same numerology, and a third (Z, Z’)-candidate value greater than the first (Z, Z’)-candidate value and the second (Z, Z’)-candidate value for the same numerology. Based on the CSI report setting including the list of the sub-settings, the base station can determine the Z value and the Z’ value based only on the third (Z, Z’)-candidate value.

[0261] The Z value can be related to the time duration from the end of the last symbol of the PDCCH to the start of the cyclic prefix (CP) of the first symbol of the CSI report, and the Z’ value can be related to the time duration from the end of the last symbol of the CSI-RS resource to the start of the CP of the first symbol of the CSI report.

[0262] Based on the CSI report setting including the list of the sub-settings, the base station can determine the Z value and the Z’ value based only on Z2 and Z2’ in Table 5.4-2 included in Table 11.

[0263] FIG. 13 illustrates a communication system 1 to which the present invention is applicable.

[0264] Referring to FIG. 13, the communication system 1 includes wireless devices, base stations, and a network. Here, the wireless device means a device that communicates using wireless connection technologies (e.g., 5G NR (New RAT), LTE (Long Term Evolution)), and is also referred to as a communication / wireless / 5G device. Without being limited thereto, the wireless devices include a robot 100a, vehicles 100b-1, 100b-2, XR (Extended Reality) devices 100c, hand-held devices 100d, home appliances 100e, IoT (Internet of Thing) devices 100f, and AI devices / servers 400. For example, the vehicles include vehicles equipped with a wireless communication function, autonomous driving vehicles, vehicles capable of vehicle-to-vehicle communication, etc. Here, the vehicles include UAVs (Unmanned Aerial Vehicles) (e.g., drones). The XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and are realized in the form of HMDs (Head-Mounted Devices), HUDs (Head-Up Displays) equipped on vehicles, TVs, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. The hand-held devices include smartphones, smart pads, wearable devices (e.g., smart watches, smart glasses), computers (e.g., notebook computers, etc.). The home appliances include TVs, refrigerators, washing machines, etc. The IoT devices include sensors, smart meters, etc. For example, the base stations and the network are also realized in wireless devices, and a specific wireless device 200a can also operate as a base station / network node for other wireless devices.

[0265] Wireless devices 100a to 100f connect to network 300 via base station 200. Artificial Intelligence (AI) technology is applied to wireless devices 100a to 100f, and wireless devices 100a to 100f connect to AI server 400 via network 300. Network 300 is configured using a 3G network, 4G (e.g., LTE) network, or 5G (e.g., NR) network. Wireless devices 100a to 100f can communicate with each other via base station 200 / network 300, but can also communicate directly without going through the base station / network (e.g., sidelink communication). For example, vehicles 100b-1 and 100b-2 can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Also, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0266] Wireless communication / connections 150a, 150b, and 150c are performed between wireless devices 100a-100f / base station 200 and between base stations 200 / base station 200. Here, wireless communication / connections are performed by various wireless connection technologies such as uplink / downlink communication 150a and sidelink communication 150b (or D2D communication), and communication between base stations 150c (e.g., relay, IAB (Integrated Access Backhaul) (e.g., 5G NR)). Wireless communication / connections 150a, 150b, and 150c enable wireless devices and base stations / wireless devices, and base stations to transmit / receive radio signals from each other. For example, wireless communication / connections 150a, 150b, and 150c can transmit / receive signals via various physical channels. To this end, based on various proposals of the present invention, one of the following is performed: a process of setting various configuration information for transmitting / receiving radio signals, a process of various signal processing (e.g., channel coding / decoding, modulation / demodulation, resource mapping / demapping, etc.), or a resource allocation process.

[0267] Figure 14 illustrates a wireless device to which the present invention can be applied.

[0268] Referring to Figure 14, the first radio device 100 and the second radio device 200 transmit and receive radio signals using various radio connectivity technologies (e.g., LTE, NR). Here, {first radio device 100, second radio device 200} correspond to {radio device 100x, base station 200} and / or {radio device 100x, radio device 100x} in Figure 13.

[0269] The first wireless device 100 includes one or more processors 102 and one or more memories 104, and further includes one or more transceivers 106 and / or one or more antennas 108. The processor 102 controls the memory 104 and / or the transceivers 106 and is configured to implement the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification. For example, the processor 102 processes information in the memory 104 to generate first information / signals, and then transmits a wireless signal containing the first information / signals with the transceiver 106. The processor 102 also receives a wireless signal containing second information / signals with the transceiver 106, and then stores the information obtained from signal processing of the second information / signals in the memory 104. The memory 104 is connected to the processor 102 and stores various information related to the operation of the processor 102. For example, the memory 104 stores software code containing instructions for performing some or all of the processes controlled by the processor 102, or for performing the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification. Here, the processor 102 and memory 104 are part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver 106 is connected to the processor 102 and transmits and / or receives wireless signals via one or more antennas 108. The transceiver 106 includes a transmitter and / or receiver. The transceiver 106 can also be mixed with an RF (Radio Frequency) unit. In this invention, wireless equipment can also mean a communication modem / circuit / chip.

[0270] The second wireless device 200 includes one or more processors 202 and one or more memories 204, and further includes one or more transceivers 206 and / or one or more antennas 208. The processor 202 controls the memory 204 and / or the transceivers 206 and is configured to implement the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification. For example, the processor 202 processes information in the memory 204 to generate third information / signals, and then transmits a wireless signal containing the third information / signals with the transceiver 206. The processor 202 also receives a wireless signal containing fourth information / signals with the transceiver 206, and then stores the information obtained from signal processing of the fourth information / signals in the memory 204. The memory 204 is connected to the processor 202 and stores various information related to the operation of the processor 202. For example, the memory 204 stores software code containing instructions for performing some or all of the processes controlled by the processor 202, or for performing the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification. Here, the processor 202 and memory 204 are part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver 206 is connected to the processor 202 and transmits and / or receives wireless signals via one or more antennas 208. The transceiver 206 includes a transmitter and / or receiver. The transceiver 206 can also be mixed with an RF unit. In this invention, wireless equipment can also mean a communication modem / circuit / chip.

[0271] The hardware elements of the wireless devices 100 and 200 will be described in more detail below. However, one or more protocol layers are implemented by one or more processors 102 and 202. For example, one or more processors 102 and 202 implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 generate one or more PDUs (Protocol Data Units) and / or one or more SDUs (Service Data Units) by means of the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification. One or more processors 102 and 202 generate messages, control information, data, or information by means of the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification. One or more processors 102 and 202 generate signals (e.g., baseband signals) containing PDUs, SDUs, messages, control information, data, or information by means of the functions, procedures, suggestions and / or methods disclosed in this specification and provide them to one or more transceivers 106 and 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 by the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification.

[0272] One or more processors 102, 202 are also referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102, 202 are implemented by hardware, firmware, software, or a combination thereof. For example, one or more ASICs (Application Specific Integrated Circuits), one or more DSPs (Digital Signal Processors), one or more DSPDs (Digital Signal Processing Devices), one or more PLDs (Programmable Logic Devices), or one or more FPGAs (Field Programmable Gate Arrays) are included in one or more processors 102, 202. The descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification are implemented using firmware or software, and the firmware or software is implemented to include modules, procedures, functions, etc. Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification is included in one or more processors 102, 202, or stored in one or more memories 104, 204 and driven by one or more processors 102, 202. The descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification are implemented using firmware or software in the form of code, instructions and / or sets of instructions.

[0273] One or more memory units 104, 204 are connected to one or more processors 102, 202 and can store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memory units 104, 204 consist of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer read storage media, and / or combinations thereof. One or more memory units 104, 204 are located inside and / or outside one or more processors 102, 202. In addition, one or more memory units 104, 204 are connected to one or more processors 102, 202 by various technologies such as wired or wireless connections.

[0274] One or more transceivers 106, 206 can transmit user data, control information, radio signals / channels, etc., as referred to in the methods and / or flowcharts described herein, to one or more other devices. One or more transceivers 106, 206 can receive user data, control information, radio signals / channels, etc., as referred to in the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed herein, 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 transmit and receive radio signals. For example, one or more processors 102, 202 can control one or more transceivers 106, 206 to transmit user data, control information or radio signals to one or more other devices. Also, one or more processors 102, 202 can control one or more transceivers 106, 206 to receive user data, control information or radio signals from one or more other devices. Furthermore, one or more transceivers 106, 206 are connected to one or more antennas 108, 208, and one or more transceivers 106, 206 are configured to transmit and receive user data, control information, radio signals / channels, etc., as referred to in the descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this specification, by one or more antennas 108, 208. In this specification, one or more antennas are multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106, 206 convert the received user data, control information, radio signals / channels, etc., from RF band signals to baseband signals for processing using one or more processors 102, 202. One or more transceivers 106, 206 convert the user data, control information, radio 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 include (analog) oscillators and / or filters.

[0275] The embodiments described above are combinations of the components and features of the present invention in a predetermined form. Each component or feature should be considered optional unless otherwise explicitly mentioned. Each component or feature can be implemented in a form that is not combined with other components or features. It is also possible to combine some components and / or features to constitute embodiments of the present invention. The order of the operations described in the embodiments of the present invention is changeable. Some components or features of any embodiment can be included in other embodiments, or replaced by corresponding components or features of other embodiments. It is obvious that embodiments can be formed by combining claims that are not explicitly referenced in the claims, or by including them as new claims through amendments after filing.

[0276] It will be obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the features of the invention. Therefore, the above detailed description should not be interpreted restrictively in any way, but should be considered illustrative. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

[0277] [Industrial applicability] This invention can be used in terminals, base stations, or other equipment of wireless mobile communication systems.

[0278] [Claims when filing an international application] [Claim 1] A method performed by a terminal, Receiving CSI (channel state information) reporting settings via higher-level signaling; Receiving DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and This includes sending a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met; The terminal determines whether the conditions for a valid CSI report are met based on the Z value and Z' value. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, The terminal is a method for determining the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​among a plurality of (Z, Z') candidate values. [Claim 2] The method according to claim 1, wherein, based on the CSI reporting setting including the list of sub-settings, the terminal excludes the first (Z, Z')-candidate values ​​and the second (Z, Z')-candidate values ​​for each of the multiple conditions related to CSI, which are no more than 4 CSI-RS ports for a single resource, and determines the Z value and the Z' value based only on the third (Z, Z')-candidate value. [Claim 3] The aforementioned multiple conditions include the first condition, The first condition is that (i) the neurology related to SCS (subcarrier spacing) is below the threshold, (ii) When 0 CPUs (CSI processing units) are occupied, CSI is triggered, (iii) The PUSCH (physical uplink shared channel) for transmitting the CSI report does not include either a transport block or a HARQ-ACK, (iv) The CSI report does not include a CRI (CSI-RS Resource Indicator), is for a single resource with a maximum of 4 CSI-RS ports or less, and has a wideband frequency granularity, (v) The method according to claim 2, where the codebook type is a single panel or is satisfied when the reported content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator). [Claim 4] The plurality of conditions includes a second condition, The second condition is that (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), is for a single resource with a maximum of 4 CSI-RS ports or less, and has a wideband frequency granularity, (v) The method according to claim 3, where the codebook type is a single panel or is satisfied when the reported content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator). [Claim 5] The plurality of (Z, Z’)-candidate values includes a first (Z, Z’)-candidate value, a second (Z, Z’)-candidate value greater than the first (Z, Z’)-candidate value for the same numerology, and a third (Z, Z’)-candidate value greater than the first (Z, Z’)-candidate value and the second (Z, Z’)-candidate value for the same numerology, Based on the CSI report setting including the list of the sub-settings, The method according to claim 1, where the terminal determines the Z value and the Z’ value based only on the third (Z, Z’)-candidate value. [Claim 6] The Z value relates to the time length from the end of the last symbol of the PDCCH to the start of the cyclic prefix (CP) of the first symbol of the CSI report. The method according to claim 1, wherein the Z' value relates to the time length from the end of the last symbol of the CSI-RS resource to the start of the CP of the first symbol of the CSI report. [Claim 7] The method according to claim 1, wherein, based on the CSI reporting setting including the list of sub-settings, the terminal determines the Z value and the Z' value based solely on Table A below. [Table A] JPEG2026528927000057.jpg5870 [Claim 8] A non-transitory recording medium configured to store instructions causing a terminal to perform the method described in claim 1, when executed by the terminal's processor. [Claim 9] It is a device, At least one memory configured to store instructions; and A processor comprising at least one processor configured to perform an operation by executing the aforementioned instructions; The operation performed by the aforementioned at least one processor is: Receiving CSI (channel state information) reporting settings via higher-level signaling; Receiving DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and The process includes: sending a CSI report related to the CSI request based on the conditions for a valid CSI report being met; The device determines whether the conditions for a valid CSI report are met based on the Z value and Z' value. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, The device determines the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​among a plurality of (Z, Z') candidate values. [Claim 10] The device further comprises a transceiver, The device according to claim 9, wherein the device is a terminal configured to operate in a wireless communication system. [Claim 11] The device according to claim 9, wherein the device is a processing device configured to control a terminal in a wireless communication system. [Claim 12] A method performed by a base station, Sending CSI (channel state information) reporting settings via higher-level signaling; Transmitting DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and This includes receiving a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met; Based on the Z-value and Z'-value, it is determined whether the conditions for a valid CSI report are met. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, A method for determining the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values. [Claim 13] It is a device, At least one memory configured to store instructions; and A processor comprising at least one processor configured to perform an operation by executing the aforementioned instructions; The operation performed by the aforementioned at least one processor is: Sending CSI (channel state information) reporting settings via higher-level signaling; Transmitting DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and This includes receiving a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met; Based on the Z-value and Z'-value, it is determined whether the conditions for a valid CSI report are met. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, A device that determines the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values. [Claim 14] The device further comprises a transceiver, The device according to claim 13, wherein the device is a base station configured to operate in a wireless communication system. [Claim 15] The device according to claim 13, wherein the device is a processing device configured to control a base station in a wireless communication system.

Claims

1. A method performed by a terminal, Receiving CSI (channel state information) reporting settings via higher-level signaling; Receiving DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and This includes sending a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met; The terminal determines whether the conditions for a valid CSI report are met based on the Z value and Z' value. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, The terminal is a method for determining the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

2. The method according to claim 1, wherein, based on the CSI reporting setting including the list of sub-settings, the terminal excludes first (Z, Z') candidate values ​​and second (Z, Z') candidate values ​​for each of a plurality of conditions related to CSI, which are no more than four CSI-RS ports for a single resource, and determines the Z value and the Z' value based only on the third (Z, Z') candidate value.

3. The aforementioned multiple conditions include the first condition, The first condition is that (i) the neurology related to SCS (subcarrier spacing) is below a threshold, (ii) When 0 CPUs (CSI processing units) are occupied, CSI is triggered, (iii) The PUSCH (physical uplink shared channel) for transmitting the CSI report does not include either a transmission block or a HARQ-ACK. (iv) The CSI report does not include a CRI (CSI-RS Resource Indicator), has a maximum of 4 CSI-RS ports or less per single resource, and has a wideband frequency granularity. (v) The method of claim 2, which is satisfied when the codebook type is single panel or the reporting content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

4. The aforementioned multiple conditions include the second condition, The second condition is that (iv) the CSI report does not include a CRI (CSI-RS Resource Indicator), has a maximum of 4 CSI-RS ports or less per single resource, and has a wideband frequency granularity. (v) The method according to claim 3, which is satisfied when the codebook type is single panel or the reporting content is set to cri-RI-CQI (cri-rank indicator-channel quality indicator).

5. The plurality of (Z, Z')-candidate values ​​include a first (Z, Z')-candidate value, a second (Z, Z')-candidate value greater than the first (Z, Z')-candidate value for the same neurology, and a third (Z, Z')-candidate value greater than both the first (Z, Z')-candidate value and the second (Z, Z')-candidate value for the same neurology. Based on the fact that the CSI reporting settings include the list of the sub-settings, The method according to claim 1, wherein the terminal determines the Z value and the Z' value based solely on the third (Z, Z') candidate value.

6. The Z value relates to the time length from the end of the last symbol of the PDCCH to the start of the CP (cyclo prefix) of the first symbol of the CSI report. The method according to claim 1, wherein the Z' value relates to the time length from the end of the last symbol of the CSI-RS resource to the start of the CP of the first symbol of the CSI report.

7. The method according to claim 1, wherein, based on the CSI reporting setting including the list of sub-settings, the terminal determines the Z value and the Z' value based solely on Table A below. Table 1

8. A non-transitor recording medium configured to store instructions causing a terminal to perform the method according to claim 1, when executed by the terminal's processor.

9. It is a device, At least one memory configured to store instructions; and A processor comprising: at least one processor configured to perform an operation by executing the aforementioned instructions; The operation performed by the aforementioned at least one processor is: Receiving CSI (channel state information) reporting settings via higher-level signaling; Receiving DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and The service includes, on the basis that the conditions for a valid CSI report have been met, sending a CSI report related to the CSI request; The device determines whether the conditions for a valid CSI report are met based on the Z value and Z' value. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time elapsed from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, The device determines the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​among a plurality of (Z, Z') candidate values.

10. The device further comprises a transceiver, The device according to claim 9, wherein the device is a terminal configured to operate in a wireless communication system.

11. The device according to claim 9, wherein the device is a processing device configured to control a terminal in a wireless communication system.

12. A method performed by a base station, Sending CSI (channel state information) reporting settings via higher-level signaling; Sending DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and This includes receiving a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met; Based on the Z-value and Z'-value, it is determined whether the conditions for a valid CSI report are met. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, A method for determining the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

13. It is a device, At least one memory configured to store instructions; and A processor comprising: at least one processor configured to perform an operation by executing the aforementioned instructions; The operation performed by the aforementioned at least one processor is: Sending CSI (channel state information) reporting settings via higher-level signaling; Sending DCI (downlink control information) containing information for CSI requests via PDCCH (physical downlink control channel); and This includes receiving a CSI report related to the CSI request based on the fact that the conditions for a valid CSI report have been met; Based on the Z-value and Z'-value, it is determined whether the conditions for a valid CSI report are met. The Z value is related to the time length from the last symbol of the PDCCH to the first symbol of the CSI report. The Z' value is related to the time length from the last symbol of the CSI-RS resource to the first symbol of the CSI report. Based on the fact that the CSI reporting settings include a list of sub-configurations for individually setting at least one of the following for each sub-configuration: CSI codebook, CSI-RS (channel state information-reference signal) antenna port subset enablement, CSI-RS resource subset, or power offset information, A device that determines the Z value and the Z' value based on only some of the (Z, Z') candidate values ​​out of a plurality of (Z, Z') candidate values.

14. The device further comprises a transceiver, The device according to claim 13, wherein the device is a base station configured to operate in a wireless communication system.

15. The device according to claim 13, wherein the device is a processing device configured to control a base station in a wireless communication system.

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