Method and apparatus for ue-initiated report in wireless communication system

Abstract

Disclosed are a method and apparatus for a report initiated by a user equipment in a wireless communication system. The method according to an embodiment of the present disclosure may comprise the steps of: on a first resource, transmitting, by the user equipment to a network, a first report initiated by the user equipment on the basis of one or more events; and on a second resource, transmitting, by the user equipment, a second report to the network. The second resource may start after a predetermined number of time units from a reference time unit.

Description

Terminal-initiated reporting method and device in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and more particularly, to a reporting method and device initiated by a terminal in a wireless communication system.

[0002] Mobile communication systems were developed to provide voice services while ensuring user activity. However, they have expanded beyond voice to include data services. Currently, explosive growth in traffic is leading to resource shortages and users' demand for higher-speed services, necessitating a more advanced mobile communication system.

[0003] Next-generation mobile communication systems must support explosive data traffic growth, dramatically increasing data rates per user, a vastly increased number of connected devices, ultra-low end-to-end latency, and high energy efficiency. To achieve these goals, various technologies are being studied, including dual connectivity, massive multiple input multiple output (MIMO), in-band full duplex, non-orthogonal multiple access (NOMA), super wideband support, and device networking.

[0004] The technical problem of the present disclosure is to provide a terminal-initiated reporting method and device in a wireless communication system.

[0005] An additional technical challenge of the present disclosure is to provide a reporting method and device based on a time required for a terminal to produce report information and / or a reporting latency limitation in a terminal-initiated report in a wireless communication system.

[0006] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0007] A method according to one embodiment of the present disclosure may include: transmitting, by the terminal, to the network a first report initiated by the terminal based on one or more events on a first resource; and transmitting, by the terminal, a second report to the network on a second resource. The second resource may start a predetermined number of time units after a reference time unit.

[0008] A method according to an additional embodiment of the present disclosure may include: receiving, by a base station, a first report from a terminal on a first resource, the first report being initiated by the terminal based on one or more events; and receiving, by the base station, a second report from the terminal on a second resource. The second resource may start a predetermined number of time units after a reference time unit.

[0009] According to the present disclosure, a terminal-initiated CSI reporting method and device in a wireless communication system can be provided.

[0010] According to the present disclosure, in a terminal-initiated report in a wireless communication system, a reporting method and device based on a time required for a terminal to produce report information and / or a reporting latency limitation can be provided.

[0011] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the description below.

[0012] The accompanying drawings, which are incorporated in and are part of the detailed description to aid in understanding the present disclosure, provide embodiments of the present disclosure and, together with the detailed description, describe the technical features of the present disclosure.

[0013] Figure 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.

[0014] FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.

[0015] FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied.

[0016] FIG. 4 illustrates a physical resource block in a wireless communication system to which the present disclosure can be applied.

[0017] FIG. 5 illustrates a slot structure in a wireless communication system to which the present disclosure can be applied.

[0018] FIG. 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission and reception method using the same.

[0019] FIG. 7 is a diagram illustrating a downlink beam management operation in a wireless communication system to which the present disclosure can be applied.

[0020] FIG. 8 is a diagram illustrating a downlink beam management procedure using SSB in a wireless communication system to which the present disclosure can be applied.

[0021] FIG. 9 is a diagram illustrating a downlink beam management operation using CSI-RS in a wireless communication system to which the present disclosure can be applied.

[0022] FIG. 10 is a diagram illustrating a process for determining a reception beam of a terminal in a wireless communication system to which the present disclosure can be applied.

[0023] FIG. 11 is a diagram illustrating a transmission beam determination process of a base station in a wireless communication system to which the present disclosure can be applied.

[0024] FIG. 12 is a diagram illustrating resource allocation in the time and frequency domains related to the operation of downlink beam management in a wireless communication system to which the present disclosure can be applied.

[0025] FIG. 13 is a diagram illustrating an uplink beam management operation using SRS in a wireless communication system to which the present disclosure can be applied.

[0026] FIG. 14 is a diagram illustrating an uplink beam management procedure in a wireless communication system to which the present disclosure can be applied.

[0027] FIG. 15 is a drawing for explaining an example of a method performed by a terminal according to the present disclosure.

[0028] FIG. 16 is a drawing for explaining an example of a method performed by a base station according to the present disclosure.

[0029] FIG. 17 is a diagram showing examples of reference time units related to a first resource and a second resource according to the present disclosure.

[0030] FIG. 18 is a diagram showing other examples of reference time units related to a first resource and a second resource according to the present disclosure.

[0031] FIG. 19 is a diagram illustrating further examples of reference time units related to a first resource and a second resource according to the present disclosure.

[0032] FIG. 20 is a drawing illustrating a block diagram of a wireless communication device according to one embodiment of the present disclosure.

[0033] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The detailed description set forth below, together with the accompanying drawings, is intended to explain exemplary embodiments of the present disclosure and is not intended to represent the only embodiments in which the present disclosure may be practiced. The following detailed description includes specific details to provide a thorough understanding of the present disclosure. However, one of ordinary skill in the art will appreciate that the present disclosure may be practiced without these specific details.

[0034] In some cases, to avoid obscuring the concepts of the present disclosure, known structures and devices may be omitted or illustrated in block diagram form focusing on the core functions of each structure and device.

[0035] In the present disclosure, when a component is said to be "connected," "coupled," or "connected" to another component, this may include not only a direct connection but also an indirect connection in which another component exists between them. Furthermore, the terms "comprises" or "has" in the present disclosure specify the presence of the mentioned features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0036] In this disclosure, terms such as “first,” “second,” etc. are used only to distinguish one component from another and are not used to limit the components, and do not limit the order or importance between the components unless specifically stated otherwise. Accordingly, within the scope of this disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and similarly, a second component in one embodiment may be referred to as a first component in another embodiment.

[0037] The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the scope of the claims. As used in the description of the embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. The term "and / or" as used herein may refer to any one of the associated enumerated items, or is meant to refer to and encompass any and all possible combinations of two or more of them. Furthermore, the use of " / " between words in this disclosure has the same meaning as "and / or" unless otherwise stated.

[0038] The present disclosure describes a wireless communication network or a wireless communication system, and an operation performed in a wireless communication network may be performed in a process of controlling the network and transmitting or receiving a signal from a device (e.g., a base station) that manages the wireless communication network, or may be performed in a process of transmitting or receiving a signal to or between terminals connected to the wireless network.

[0039] In the present disclosure, transmitting or receiving a channel means transmitting or receiving information or a signal through the channel. For example, transmitting a control channel means transmitting control information or a signal through the control channel. Similarly, transmitting a data channel means transmitting data information or a signal through the data channel.

[0040] Hereinafter, downlink (DL) refers to communication from a base station to a terminal, and uplink (UL) refers to communication from a terminal to a base station. In downlink, a transmitter may be part of a base station, and a receiver may be part of a terminal. In uplink, a transmitter may be part of a terminal, and a receiver may be part of a base station. A base station may be expressed as a first communication device, and a terminal may be expressed as a second communication device. A base station (BS) may be replaced by terms such as a fixed station, Node B, eNB (evolved-NodeB), gNB (Next Generation NodeB), BTS (base transceiver system), access point (AP: Access Point), network (5G network), AI (Artificial Intelligence) system / module, RSU (road side unit), robot, drone (UAV: Unmanned Aerial Vehicle), AR (Augmented Reality) device, VR (Virtual Reality) device, etc.In addition, the terminal may be fixed or mobile, and may be replaced with terms such as UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile Station), WT (Wireless terminal), MTC (Machine-Type Communication) device, M2M (Machine-to-Machine) device, D2D (Device-to-Device) device, vehicle, RSU (road side unit), robot, AI (Artificial Intelligence) module, UAV (Unmanned Aerial Vehicle), AR (Augmented Reality) device, VR (Virtual Reality) device, etc.

[0041] The following technologies can be used in various wireless access systems, such as CDMA, FDMA, TDMA, OFDMA, and SC-FDMA. CDMA can be implemented using wireless technologies such as UTRA (Universal Terrestrial Radio Access) or CDMA2000. TDMA can be implemented using wireless technologies such as GSM (Global System for Mobile communications) / GPRS (General Packet Radio Service) / EDGE (Enhanced Data Rates for GSM Evolution). OFDMA can be implemented using wireless 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 a part of E-UMTS (Evolved UMTS) that uses E-UTRA, and LTE-A (Advanced) / LTE-A pro is an evolved version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an evolved version of 3GPP LTE / LTE-A / LTE-A pro.

[0042] For clarity, the description is based on a 3GPP communication system (e.g., LTE-A, NR), but the technical idea of ​​the present disclosure is not limited thereto. LTE refers to technology after 3GPP TS (Technical Specification) 36.xxx Release 8. Specifically, LTE technology after 3GPP TS 36.xxx Release 10 is referred to as LTE-A, and LTE technology after 3GPP TS 36.xxx Release 13 is referred to as LTE-A pro. 3GPP NR refers to technology after TS 38.xxx Release 15. LTE / NR may be referred to as a 3GPP system. "xxx" refers to a standard document detail number. LTE / NR may be collectively referred to as a 3GPP system. For background technology, terms, abbreviations, etc. used in the description of the present disclosure, reference may be made to matters described in standard documents published prior to the present disclosure. For example, reference may be made to the following documents.

[0043] For 3GPP LTE, see TS 36.211 (Physical channels and modulation), TS 36.212 (Multiplexing and channel coding), TS 36.213 (Physical layer procedures), TS 36.300 (General description), and TS 36.331 (Radio resource control).

[0044] For 3GPP NR, see TS 38.211 (Physical channels and modulation), TS 38.212 (Multiplexing and channel coding), TS 38.213 (Physical layer procedures for control), TS 38.214 (Physical layer procedures for data), TS 38.300 (Overall description of NR and New Generation-Radio Access Network (NG-RAN)), and TS 38.331 (Radio Resource Control Protocol Specification).

[0045] Abbreviations for terms that may be used in this disclosure are defined as follows.

[0046] - BM: beam management

[0047] - CQI: Channel Quality Indicator

[0048] - CRI: Channel state information - reference signal resource indicator

[0049] - CSI: Channel State Information

[0050] - CSI-IM: Channel State Information - Interference Measurement

[0051] - CSI-RS: Channel state information - reference signal

[0052] - DMRS: Demodulation Reference Signal

[0053] - FDM: frequency division multiplexing

[0054] - FFT: fast Fourier transform

[0055] - IFDMA: interleaved frequency division multiple access

[0056] - IFFT: inverse fast Fourier transform

[0057] - L1-RSRP: Layer 1 reference signal received power

[0058] - L1-RSRQ: Layer 1 reference signal received quality

[0059] - MAC: Medium Access Control

[0060] - NZP: non-zero power

[0061] - OFDM: orthogonal frequency division multiplexing

[0062] - PDCCH: Physical downlink control channel

[0063] - PDSCH: Physical downlink shared channel

[0064] - PMI: precoding matrix indicator

[0065] - RE: resource element

[0066] - RI: Rank indicator

[0067] - RRC: Radio Resource Control

[0068] - RSSI: Received signal strength indicator

[0069] - Rx: Reception

[0070] - QCL: quasi co-location

[0071] - SINR: signal to interference and noise ratio

[0072] - SSB (or SS / PBCH block): Synchronization signal block (including primary synchronization signal (PSS), secondary synchronization signal (SSS), and physical broadcast channel (PBCH))

[0073] - TDM: Time Division Multiplexing

[0074] - TRP: transmission and reception point

[0075] - TRS: Tracking Reference Signal

[0076] - Tx: transmission

[0077] - UE: user equipment

[0078] - ZP: Zero Power

[0079] System General

[0080] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communications compared to existing radio access technologies (RATs) is emerging. Furthermore, massive machine type communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. Accordingly, the introduction of next-generation RATs that consider enhanced mobile broadband communications (eMBB), massive MTC (MMTC), and ultra-reliable and low latency communications (URLLC) is being discussed. For convenience, these technologies are referred to as NR in this disclosure. NR is an expression representing an example of 5G RAT.

[0081] A new RAT system, including NR, uses OFDM or a similar transmission scheme. The new RAT system may follow OFDM parameters different from those of LTE. Alternatively, the new RAT system may follow the existing LTE / LTE-A numerology but support a larger system bandwidth (e.g., 100 MHz). Alternatively, a single cell may support multiple numerologies. That is, terminals operating under different numerologies can coexist within a single cell.

[0082] A numerology corresponds to a single subcarrier spacing in the frequency domain. Different numerologies can be defined by scaling the reference subcarrier spacing by an integer N.

[0083] Figure 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.

[0084] Referring to Fig. 1, the NG-RAN consists of gNBs that provide NG-RA (NG-Radio Access) user plane (i.e., new AS (access stratum) sublayer / PDCP (packet data convergence protocol) / RLC (radio link control) / MAC / PHY) and control plane (RRC) protocol termination for UE. The gNBs are interconnected via Xn interfaces. The gNBs are also connected to the NGC (New Generation Core) via the NG interface. More specifically, the gNBs are connected to the AMF (Access and Mobility Management Function) via the N2 interface and to the UPF (User Plane Function) via the N3 interface.

[0085] FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.

[0086] NR systems can support multiple numerologies. Numerologies can be defined by subcarrier spacing and cyclic prefix (CP) overhead. Multiple subcarrier spacings can be derived by scaling the base (reference) subcarrier spacing by an integer N (or μ). Furthermore, even if it is assumed that very low subcarrier spacing is not used at very high carrier frequencies, the numerology used can be selected independently of the frequency band. Furthermore, NR systems can support various frame structures corresponding to multiple numerologies.

[0087] Below, we examine OFDM numerologies and frame structures that can be considered in NR systems. The various OFDM numerologies supported in NR systems can be defined as shown in Table 1 below.

[0088] μΔf=2 μ ·15 [kHz]CP015 Normal 130 Normal 260 Normal, Extended 3120 Normal 4240 Normal

[0089] NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, when the SCS is 15 kHz, it supports a wide area in traditional cellular bands, when the SCS is 30 kHz / 60 kHz, it supports dense-urban, lower latency, and wider carrier bandwidth, and when the SCS is 60 kHz or higher, it supports a bandwidth larger than 24.25 GHz to overcome phase noise. The NR frequency band is defined by two types of frequency ranges (FR1, FR2). FR1 and FR2 can be configured as shown in Table 2 below. In addition, FR2 can mean millimeter wave (mmW).

[0090] Frequency Range Designation Corresponding Frequency Range Subcarrier Spacing FR1410MHz - 7125MHz 15, 30, 60kHz FR224250MHz - 52600MHz 60, 120, 240kHz

[0091] Regarding the frame structure in the NR system, the sizes of the various fields in the time domain are T c =1 / (Δf max ·N f ) is expressed as a multiple of the time unit. Here, Δf max =480·10 3 Hz, and N f =4096. Downlink and uplink transmissions are T f =1 / (Δf max N f / 100)·T c = It is organized into radio frames with a duration of 10ms. Here, each radio frame is T sf =(Δf max N f / 1000)·T c = It consists of 10 subframes with a duration of 1ms. In this case, there may be one set of frames for uplink and one set of frames for downlink. In addition, transmission in uplink frame number i from a terminal is T earlier than the start of the corresponding downlink frame from the terminal. TA =(N TA +N TA,offset )T c It should start before. For the subcarrier spacing configuration μ, slots are n within a subframe. s μ ∈{0,..., N slot subframe,μ-1} are numbered in increasing order, and n within a radio frame. s,f μ ∈{0,..., N slot frame,μ -1} are numbered in increasing order. One slot is N symb slot It consists of consecutive OFDM symbols, and N symb slot is determined by CP. Slot n in subframe s μ The start of OFDM symbol n in the same subframe s μ N symb slot are aligned temporally with the start of the OFDM signal. Not all terminals can transmit and receive simultaneously, which means that not all OFDM symbols in a downlink slot or uplink slot can be utilized.

[0092] Table 3 shows the number of OFDM symbols per slot in a general CP (N symb slot ), the number of slots per wireless frame (N slot frame,μ ), number of slots per subframe (N slot subframe,μ), and Table 4 shows the number of OFDM symbols per slot in the extended CP, the number of slots per radio frame, and the number of slots per subframe.

[0093] μN symb slot N slot frame,μ N slot subframe,μ01410111420221440431480841416016

[0094] μN symb slot N slot frame,μ N slot subframe,μ212404

[0095] FIG. 2 is an example when μ=2 (SCS is 60 kHz), and referring to Table 3, 1 subframe can include 4 slots. 1 subframe={1,2,4} slot illustrated in FIG. 2 is an example, and the number of slot(s) that can be included in 1 subframe is defined as in Table 3 or Table 4. In addition, a mini-slot can include 2, 4, or 7 symbols, or more or fewer symbols. With respect to physical resources in an NR system, antenna ports, resource grids, resource elements, resource blocks, carrier parts, etc. can be considered.

[0096] Hereinafter, the physical resources that can be considered in the NR system will be examined in detail. First, with respect to antenna ports, antenna ports are defined such that the channel through which a symbol on the antenna port is carried can be inferred from the channel through which another symbol on the same antenna port is carried. If the large-scale property of the channel through which a symbol on one antenna port is carried can be inferred from the channel through which a symbol on another antenna port is carried, then two antenna ports can be said to have a QC / QCL (quasi co-located or quasi co-location) relationship. Here, the large-scale property includes one or more of delay spread, Doppler spread, frequency shift, average received power, and received timing.

[0097] FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied.

[0098] Referring to Figure 3, the resource grid is N in the frequency domain. RB μ N sc RB It consists of subcarriers, and one subframe is 14·2 μ It is described as an example, but not limited to, that it consists of OFDM symbols. In an NR system, the transmitted signal is N RB μ N sc RB One or more resource grids consisting of subcarriers and 2 μ N symb (μ) is described by OFDM symbols. Here, N RB μ ≤N RBmax,μ is. The above N RB max,μ represents the maximum transmission bandwidth, which can vary between uplink and downlink as well as between numerologies.

[0099] In this case, one resource grid can be set for each μ and antenna port p. Each element of the resource grid for μ and antenna port p is referred to as a resource element and is uniquely identified by an index pair (k, l'), where k=0,...,N. RB μ N sc RB -1 is the index in the frequency domain, and l'=0,...,2 μ N symb (μ) -1 indicates the position of the symbol within the subframe. When referring to a resource element in a slot, an index pair (k,l) is used. Here, l=0,...,N symb μ -1. The resource element (k,l') for μ and antenna port p is a complex value a k,l' (p,μ) . If there is no risk of confusion or if a particular antenna port or numerology is not specified, the indices p and μ can be dropped, resulting in a complex value of a k,l' (p) or a k,l' This can be. Also, a resource block (RB) is N in the frequency domain. sc RB =12 is defined as consecutive subcarriers.

[0100] Point A serves as a common reference point of the resource block grid and is obtained as follows.

[0101] - offsetToPointA for the Primary Cell (PCell) downlink represents the frequency offset between point A and the lowest subcarrier of the lowest resource block overlapping the SS / PBCH block used by the UE for initial cell selection. It is expressed in resource block units assuming 15 kHz subcarrier spacing for FR1 and 60 kHz subcarrier spacing for FR2.

[0102] - absoluteFrequencyPointA represents the frequency location of point A expressed as in ARFCN (absolute radio-frequency channel number). Common resource blocks (CRBs) are numbered from 0 upwards in the frequency domain for the subcarrier spacing setting μ. The center of subcarrier 0 of CRB 0 for the subcarrier spacing setting μ coincides with 'point A'. Common resource block number n in the frequency domain CRB μ The relationship between the resource elements (k, l) and the subcarrier spacing setting μ is given by the following mathematical expression 1.

[0103]

[0104] In Equation 1, k is defined relative to point A such that k = 0 corresponds to the subcarrier centered at point A. Physical resource blocks are numbered from 0 to N within the bandwidth part (BWP). BWP,i size,μ -Numbered from -1, where i is the number of BWP. Physical resource block n in BWP i PRB and common resource block n CRB The relationship between them is given by the mathematical formula 2 below.

[0105]

[0106] NBWP,i start,μ is a common resource block where BWP starts relative to common resource block 0.

[0107] FIG. 4 illustrates a physical resource block in a wireless communication system to which the present disclosure can be applied. FIG. 5 illustrates a slot structure in a wireless communication system to which the present disclosure can be applied.

[0108] Referring to FIGS. 4 and 5, a slot includes multiple symbols in the time domain. For example, in the case of a normal CP, one slot includes seven symbols, but in the case of an extended CP, one slot includes six symbols.

[0109] A carrier comprises 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 (physical) resource blocks in the frequency domain, and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can comprise up to N (e.g., 5) BWPs. Data communication is performed through activated BWPs, and only one BWP can be activated for a single terminal. Each element in the resource grid is referred to as a Resource Element (RE), to which one complex symbol can be mapped.

[0110] The NR system can support up to 400 MHz per component carrier (CC). If a terminal operating in such a wideband CC always operates with the radio frequency (RF) chip for the entire CC turned on, the terminal battery consumption may increase. Alternatively, when considering multiple use cases operating within a single wideband CC (e.g., eMBB, URLLC, Mmtc, V2X, etc.), different numerologies (e.g., subcarrier spacing, etc.) may be supported for each frequency band within the CC. Alternatively, each terminal may have different maximum bandwidth capabilities. Considering this, the base station can instruct the terminal to operate only in a portion of the bandwidth of the wideband CC, rather than the entire bandwidth. This portion of bandwidth is conveniently defined as the bandwidth part (BWP). A BWP can be composed of consecutive RBs on the frequency axis and can correspond to a single numerology (e.g., subcarrier spacing, CP length, slot / mini-slot interval).

[0111] Meanwhile, a base station can configure multiple BWPs within a single CC configured for a terminal. For example, a BWP occupying a relatively small frequency domain can be configured in a PDCCH monitoring slot, while the PDSCH indicated by the PDCCH can be scheduled on a larger BWP.

[0112] Alternatively, if UEs are concentrated in a specific BWP, some UEs can be assigned to different BWPs for load balancing. Alternatively, considering frequency domain inter-cell interference cancellation between neighboring cells, some spectrum in the middle of the total bandwidth can be excluded and both BWPs can be assigned within the same slot. In other words, the base station can assign at least one DL / UL BWP to UEs associated with a wideband CC.

[0113] The base station can activate at least one DL / UL BWP among the DL / UL BWP(s) configured at a specific point in time (by L1 signaling or MAC CE (Control Element) or RRC signaling, etc.). In addition, the base station can instruct switching to another configured DL / UL BWP (by L1 signaling or MAC CE or RRC signaling, etc.). Alternatively, switching to a designated DL / UL BWP may be performed when a timer value expires based on a timer. In this case, the activated DL / UL BWP is defined as an active DL / UL BWP.

[0114] However, since the terminal may not receive the configuration for DL / UL BWP in situations such as when the terminal is performing the initial access process or before the RRC connection is set up, the DL / UL BWP assumed by the terminal in these situations is defined as the initial active DL / UL BWP.

[0115] FIG. 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission and reception method using the same.

[0116] In wireless communication systems, terminals receive information from a base station via the downlink and transmit it to the base station via the uplink. The information transmitted and received between the base station 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.

[0117] When the terminal is powered on or enters a new cell, it performs an initial cell search operation, such as synchronizing with the base station (S601). To this end, the terminal receives a primary synchronization signal (PSS) and a secondary synchronization signal (PSS) from the base station to synchronize with the base station and obtain information such as a cell identifier (ID). Afterwards, the terminal can receive a physical broadcast channel (PBCH) from the base station to obtain broadcast information within the cell. Meanwhile, the terminal can receive a downlink reference signal (DL RS) during the initial cell search phase to check the downlink channel status.

[0118] A terminal that has completed initial cell search can obtain more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) according to information carried in the PDCCH (S602).

[0119] Meanwhile, when accessing a base station for the first time or when there are no radio resources for signal transmission, the terminal may perform a random access procedure (RACH) with the base station (steps S603 to S606). To this end, the terminal may transmit a specific sequence as a preamble via the physical random access channel (PRACH) (steps S603 and S605) and receive a response message to the preamble via the PDCCH and corresponding PDSCH (steps S604 and S606). In the case of contention-based RACH, a contention resolution procedure may additionally be performed.

[0120] The terminal that has performed the procedure described above can then perform PDCCH / PDSCH reception (S607) and physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) transmission (S608) as general uplink / downlink signal transmission procedures. In particular, the terminal receives downlink control information (DCI) through the PDCCH. Here, DCI includes control information such as resource allocation information for the terminal, and its format varies depending on its intended use.

[0121] Meanwhile, the control information that the terminal transmits to the base station via the uplink or that the terminal receives from the base station includes downlink / uplink ACK / NACK (Acknowledgement / Non-Acknowledgement) signals, CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indicator), etc. In the case of the 3GPP LTE system, the terminal can transmit the above-described control information such as CQI / PMI / RI via PUSCH and / or PUCCH.

[0122] Table 5 shows an example of the DCI format in the NR system.

[0123] DCI Format Utilization 0_0 Scheduling of PUSCH within a cell 0_1 Scheduling of one or multiple PUSCH within a cell, or indicating cell group (CG: cell group) downlink feedback information to the UE 0_2 Scheduling of PUSCH within a cell 1_0 Scheduling of PDSCH within a DL cell 1_1 Scheduling of PDSCH within a cell 1_2 Scheduling of PDSCH within a cell

[0124] Referring to Table 5, DCI formats 0_0, 0_1, and 0_2 may include resource information related to scheduling of PUSCH (e.g., UL / SUL (Supplementary UL), frequency resource allocation, time resource allocation, frequency hopping, etc.), transport block (TB) related information (e.g., MCS (Modulation Coding and Scheme), NDI (New Data Indicator), RV (Redundancy Version), etc.), HARQ (Hybrid - Automatic Repeat and request) related information (e.g., process number, DAI (Downlink Assignment Index), PDSCH-HARQ feedback timing, etc.), multi-antenna related information (e.g., DMRS sequence initialization information, antenna port, CSI request, etc.), power control information (e.g., PUSCH power control, etc.), and the control information included in each DCI format may be predefined. DCI format 0_0 is used for scheduling of PUSCH in one cell. Information included in DCI format 0_0 is transmitted with CRC (cyclic redundancy check) scrambled by C-RNTI (cell radio network temporary identifier, Cell RNTI), CS-RNTI (Configured Scheduling RNTI), or MCS-C-RNTI (Modulation Coding Scheme Cell RNTI).

[0125] DCI format 0_1 ​​is used to indicate scheduling of one or more PUSCHs in a cell, or configure grant (CG) downlink feedback information to the UE. The information contained in DCI format 0_1 ​​is CRC-scrambled and transmitted using the C-RNTI, CS-RNTI, SP-CSI-RNTI (Semi-Persistent CSI RNTI), or MCS-C-RNTI.

[0126] DCI format 0_2 is used for scheduling PUSCH in a cell. The information contained in DCI format 0_2 is CRC-scrambled and transmitted using C-RNTI, CS-RNTI, SP-CSI-RNTI, or MCS-C-RNTI.

[0127] Next, DCI formats 1_0, 1_1, and 1_2 may include resource information related to scheduling of PDSCH (e.g., frequency resource allocation, time resource allocation, virtual resource block (VRB)-physical resource block (PRB) mapping, etc.), transport block (TB) related information (e.g., MCS, NDI, RV, etc.), HARQ related information (e.g., process number, DAI, PDSCH-HARQ feedback timing, etc.), multi-antenna related information (e.g., antenna port, transmission configuration indicator (TCI), sounding reference signal (SRS) request, etc.), PUCCH related information (e.g., PUCCH power control, PUCCH resource indicator, etc.), and control information included in each DCI format may be predefined.

[0128] DCI format 1_0 is used for scheduling PDSCH in a DL cell. The information contained in DCI format 1_0 is CRC-scrambled and transmitted using C-RNTI, CS-RNTI, or MCS-C-RNTI.

[0129] DCI format 1_1 is used for scheduling PDSCH in a single cell. The information contained in DCI format 1_1 is CRC-scrambled and transmitted using C-RNTI, CS-RNTI, or MCS-C-RNTI.

[0130] DCI format 1_2 is used for scheduling PDSCH in a single cell. The information contained in DCI format 1_2 is CRC-scrambled and transmitted using C-RNTI, CS-RNTI, or MCS-C-RNTI.

[0131] beam management (BM)

[0132] BM procedures are L1 (layer 1) / L2 (layer 2) procedures for acquiring and maintaining a set of base station (e.g., gNB, TRP, etc.) and / or terminal (e.g., UE) beams that can be used for downlink (DL) and uplink (UL) transmission / reception, and may include the following procedures and terminology.

[0133] - Beam measurement: An operation in which a base station or UE measures the characteristics of a received beam-forming signal.

[0134] - Beam determination: An operation in which a base station or UE selects its own transmit beam (Tx beam) / receive beam (Rx beam).

[0135] - Beam sweeping: The operation of covering a spatial area using a transmit and / or receive beam over a predetermined time interval in a predetermined manner.

[0136] - Beam report: An operation in which a UE reports information about a beam-formed signal based on beam measurement.

[0137] The BM procedure can be divided into (1) a DL BM procedure using SS (synchronization signal) / PBCH (physical broadcast channel) Block or CSI-RS, and (2) a UL BM procedure using SRS (sounding reference signal).

[0138] Additionally, each BM procedure may include transmit beam sweeping (Tx beam sweeping) to determine a transmit beam (Tx beam) and receive beam sweeping (Rx beam sweeping) to determine a receive beam (Rx beam).

[0139] Below, the DL BM procedure is described.

[0140] The DL BM procedure may include (1) transmission of beamformed DL RSs (reference signals) (e.g., CSI-RS or SS Block (SSB)) of the base station and (2) beam reporting of the terminal.

[0141] Here, beam reporting may include preferred DL RS ID(identifier)(s) and corresponding L1-RSRP (Reference Signal Received Power).

[0142] The above DL RS ID may be an SSBRI (SSB Resource Indicator) or a CRI (CSI-RS Resource Indicator).

[0143] Below, the DL BM procedure using SSB is described.

[0144] FIG. 7 is a diagram illustrating a downlink beam management operation in a wireless communication system to which the present disclosure can be applied.

[0145] Referring to Figure 7, SSB beam and CSI-RS beam can be used for beam measurement. The measurement metric is L1-RSRP per resource / block. SSB is used for coarse beam measurement, and CSI-RS can be used for fine beam measurement. SSB can be used for both Tx beam sweeping and Rx beam sweeping.

[0146] Rx beam sweeping using SSB can be performed by the UE changing the Rx beam for the same SSBRI across multiple SSB bursts, where one SS burst includes one or more SSBs, and one SS burst set includes one or more SSB bursts.

[0147] FIG. 8 is a diagram illustrating a downlink beam management procedure using SSB in a wireless communication system to which the present disclosure can be applied.

[0148] The configuration for beam report using SSB is performed during CSI / beam configuration in the RRC connected state (or RRC connected mode).

[0149] Referring to FIG. 8, the terminal receives a CSI-ResourceConfig IE including a CSI-SSB-ResourceSetList including SSB resources used for BM from the base station (S410).

[0150] Table 6 shows an example of the CSI-ResourceConfig IE. As shown in Table 6, the BM configuration using SSB is not defined separately, and SSB is set as a CSI-RS resource.

[0151] -- ASN1START-- TAG-CSI-RESOURCECONFIG-STARTCSI-ResourceConfig ::= SEQUENCE {csi-ResourceConfigId CSI-ResourceConfigId,csi-RS-ResourceSetList CHOICE {nzp-CSI-RS-SSB SEQUENCE {nzp-CSI-RS-ResourceSetList SEQUENCE (SIZE (1..maxNrofNZP-CSI-RS-ResourceSetsPerConfig)) OF NZP-CSI-RS-ResourceSetId OPTIONAL,csi-SSB-ResourceSetListSEQUENCE (SIZE (1..maxNrofCSI-SSB-ResourceSetsPerConfig)) OF CSI-SSB-ResourceSetIdOPTIONAL},csi-IM-ResourceSetList SEQUENCE (SIZE (1..maxNrofCSI-IM-ResourceSetsPerConfig)) OF CSI-IM-ResourceSetId},bwp-Id BWP-Id,resourceType ENUMERATED { aperiodic, semiPersistent, periodic},...}-- TAG-CSI-RESOURCECONFIGTOADDMOD-STOP-- ASN1STOP

[0152] In Table 6, the csi-SSB-ResourceSetList parameter indicates a list of SSB resources used for beam management and reporting in one resource set. Here, the SSB resource set can be set to {SSBx1, SSBx2, SSBx3, SSBx4, ...}. The SSB index can be defined from 0 to 63. The terminal receives SSB resources from the base station based on the CSI-SSB-ResourceSetList (S420).

[0153] When CSI-RS reportConfig related to reporting on SSBRI and L1-RSRP is set, the terminal reports (beams) the best SSBRI and its corresponding L1-RSRP to the base station (S430).

[0154] Below, the DL BM procedure using CSI-RS is described.

[0155] Regarding the usage of CSI-RS, i) if the repetition parameter is set for a specific CSI-RS resource set and TRS_info is not set, CSI-RS is used for beam management. ii) if the repetition parameter is not set and TRS_info is set, CSI-RS is used for TRS (tracking reference signal). iii) if the repetition parameter is not set and TRS_info is not set, CSI-RS is used for CSI acquisition.

[0156] This repetition parameter can only be set for CSI-RS resource sets associated with a CSI-ReportConfig that has a report of L1 RSRP or 'No Report (or None)'.

[0157] If a terminal is configured with a CSI-ReportConfig with reportQuantity set to 'cri-RSRP' or 'none', and a CSI-ResourceConfig (upper layer parameter resourcesForChannelMeasurement) for channel measurement does not include the upper layer parameter 'trs-Info' and includes an NZP-CSI-RS-ResourceSet with the upper layer parameter 'repetition' set, the terminal may be configured with only the same number of ports (1-port or 2-port) with the upper layer parameter 'nrofPorts' for all CSI-RS resources in the NZP-CSI-RS-ResourceSet.

[0158] (Upper layer parameter) When repetition is set to 'ON', it is related to the Rx beam sweeping procedure of the terminal. In this case, when the terminal receives the NZP-CSI-RS-ResourceSet, the terminal can assume that at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is transmitted through the same downlink spatial domain transmission filter. That is, at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is transmitted through the same Tx beam. Here, at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet can be transmitted in a different OFDM symbol. In addition, the terminal does not expect to receive different periods in periodicityAndOffset among all CSI-RS resources in the NZP-CSI-RS-Resourceset.

[0159] On the other hand, when Repetition is set to 'OFF', it is related to the Tx beam sweeping procedure of the base station. In this case, when repetition is set to 'OFF', the terminal does not assume that at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is transmitted through the same downlink spatial domain transmission filter. That is, at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is transmitted through a different Tx beam.

[0160] That is, when the reportQuantity of the above CSI-RS reportConfig IE is set to 'ssb-Index-RSRP', the terminal reports the best SSBRI and the corresponding L1-RSRP to the base station.

[0161] And, if the terminal sets the CSI-RS resource in the same OFDM symbol(s) as the SSB (SS / PBCH Block) and 'QCL-TypeD' is applicable, the terminal can assume that the CSI-RS and the SSB are quasi co-located from the 'QCL-TypeD' perspective.

[0162] Here, the QCL TypeD may mean that the antenna ports are QCL-connected from the perspective of spatial Rx parameters. When the terminal receives multiple DL antenna ports in a QCL Type D relationship, the same reception beam may be applied. In addition, the terminal does not expect the CSI-RS to be configured in an RE that overlaps with an SSB RE.

[0163] FIG. 9 is a diagram illustrating a downlink beam management operation using CSI-RS in a wireless communication system to which the present disclosure can be applied.

[0164] Fig. 9(a) illustrates a terminal's Rx beam determination (or refinement) procedure, and Fig. 9(b) illustrates a base station's Tx beam sweeping procedure. Furthermore, Fig. 9(a) illustrates a case where the repetition parameter is set to 'ON', and Fig. 9(b) illustrates a case where the repetition parameter is set to 'OFF'.

[0165] FIG. 10 is a diagram illustrating a process for determining a reception beam of a terminal in a wireless communication system to which the present disclosure can be applied.

[0166] Referring to FIG. 9(a) and FIG. 10, the terminal's Rx beam determination process will be examined.

[0167] The terminal receives an NZP CSI-RS resource set IE including an upper layer parameter repetition from the base station via RRC signaling (S610). Here, the repetition parameter is set to 'ON'.

[0168] The terminal repeatedly receives resource(s) within the CSI-RS resource set with repetition 'ON' in different OFDM symbols through the same Tx beam (or DL ​​spatial domain transmission filter) of the base station (S620).

[0169] The terminal determines its own Rx beam (S630).

[0170] The terminal skips CSI reporting (S640). In this case, the reportQuantity of the CSI reporting setting can be set to 'No report (or None)'.

[0171] That is, the terminal may omit CSI reporting when repetition is set to 'ON'.

[0172] FIG. 11 is a diagram illustrating a transmission beam determination process of a base station in a wireless communication system to which the present disclosure can be applied.

[0173] Referring to FIG. 9(b) and FIG. 11, the Tx beam determination process of the base station will be examined.

[0174] The terminal receives an NZP CSI-RS resource set IE including an upper layer parameter repetition from the base station via RRC signaling (S710). Here, the repetition parameter is set to 'OFF' and is related to the Tx beam sweeping procedure of the base station.

[0175] The terminal receives resources within the CSI-RS resource set with repetition set to 'OFF' through different Tx beams (DL spatial domain transmission filters) of the base station (S720).

[0176] The terminal selects (or determines) the best beam (S740)

[0177] The terminal reports the ID and related quality information (e.g., L1-RSRP) for the selected beam to the base station (S740). In this case, the reportQuantity of the CSI reporting configuration can be set to 'CRI + L1-RSRP.'

[0178] That is, the terminal reports the CRI and the L1-RSRP for the CSI-RS to the base station when the CSI-RS is transmitted for the BM.

[0179] FIG. 12 is a diagram illustrating resource allocation in the time and frequency domains related to the operation of downlink beam management in a wireless communication system to which the present disclosure can be applied.

[0180] Referring to FIG. 12, when repetition 'ON' is set to the CSI-RS resource set, multiple CSI-RS resources are repeatedly used by applying the same transmission beam, and when repetition 'OFF' is set to the CSI-RS resource set, different CSI-RS resources are transmitted with different transmission beams.

[0181] Below, a beam indication method related to downlink BM is described.

[0182] A terminal may receive an RRC configuration list of at most M candidate Transmission Configuration Indication (TCI) states for the purpose of at least QCL (Quasi Co-location) indication, where M may be 64.

[0183] Each TCI state can be configured with one RS set. At least, each ID of a DL RS for spatial QCL purposes (QCL Type D) within an RS set can refer to one of the DL RS types, such as SSB, P(periodic)-CSI RS, SP(semi-persistent)-CSI RS, and A(aperiodic)-CSI RS.

[0184] At least the initialization / update of the IDs of DL RS(s) within the RS set used for spatial QCL purposes can be performed at least through explicit signaling.

[0185] Table 7 illustrates the TCI-State information element (IE).

[0186] The TCI-State IE associates one or two DL reference signals (RS) with their corresponding quasi co-location (QCL) types.

[0187] -- ASN1START-- TAG-TCI-STATE-STARTTCI-State ::= SEQUENCE {tci-StateId TCI-StateId,qcl-Type1 QCL-Info,qcl-Type2 QCL-Info OPTIONAL, -- Need R...}QCL-Info ::= SEQUENCE {cell ServCellIndex OPTIONAL, -- Need Rbwp-Id BWP-Id OPTIONAL, -- Cond CSI-RS-IndicatedreferenceSignal CHOICE {csi-rs NZP-CSI-RS-ResourceId,ssb SSB-Index},qcl-Type ENUMERATED {typeA, typeB, typeC, typeD},...}-- TAG-TCI-STATE-STOP-- ASN1STOP

[0188] In Table 7, the bwp-Id parameter indicates the DL BWP (bandwidth part) where the RS is located, the cell parameter indicates the carrier where the RS is located, and the referencesignal parameter indicates the reference antenna port(s) or a reference signal including the reference antenna port(s) that is the source of quasi co-location for the corresponding target antenna port(s). The target antenna port(s) may be a CSI-RS, a PDCCH DMRS, or a PDSCH DMRS. For example, in order to indicate QCL reference RS information for a non-zero power (NZP) CSI-RS, a corresponding TCI state ID (identifier) ​​may be indicated in the NZP CSI-RS resource configuration information. In another example, in order to indicate QCL reference information for a PDCCH DMRS antenna port(s), a TCI state ID may be indicated in each CORESET configuration. As another example, a TCI state ID can be indicated via DCI to indicate QCL reference information for PDSCH DMRS antenna port(s). Uplink beam management is described below.

[0189] Depending on the terminal implementation, UL BM may or may not have beam reciprocity (or beam correspondence) between the Tx beam and the Rx beam. If reciprocity between the Tx beam and the Rx beam is established at both the base station and the terminal, the UL beam pair can be aligned through the DL beam pair. However, if reciprocity between the Tx beam and the Rx beam is not established at either the base station or the terminal, a UL beam pair determination process is required separately from the DL beam pair determination.

[0190] Additionally, even if both the base station and the terminal maintain beam correspondence, the base station can use the UL BM procedure for DL ​​Tx beam determination without the terminal requesting reporting of a preferred beam.

[0191] UL BM can be performed via beamformed UL SRS transmission, and whether UL BM is applied to an SRS resource set is determined by the (higher layer parameter) usage. When usage is set to 'BeamManagement (BM)', only one SRS resource can be transmitted for each of multiple SRS resource sets at a given time instant.

[0192] A UE can be configured with one or more SRS (Sounding Reference Symbol) resource sets (via higher layer signaling, RRC signaling, etc.) configured by (higher layer parameter) SRS-ResourceSet. For each SRS resource set, the UE can be configured with K≥1 SRS resources (higher layer parameter SRS-resource). Here, K is a natural number, and the maximum value of K is indicated by SRS_capability.

[0193] Similar to DL BM, UL BM procedure can be divided into Tx beam sweeping of the terminal and Rx beam sweeping of the base station.

[0194] FIG. 13 is a diagram illustrating an uplink beam management operation using SRS in a wireless communication system to which the present disclosure can be applied.

[0195] Fig. 13(a) illustrates the Rx beam determination operation of the base station, and Fig. 13(b) illustrates the Tx beam sweeping operation of the terminal.

[0196] FIG. 14 is a diagram illustrating an uplink beam management procedure in a wireless communication system to which the present disclosure can be applied.

[0197] The terminal receives RRC signaling (e.g., SRS-Config IE) from the base station including the usage parameter (upper layer parameter) set to 'beam management' (S1010).

[0198] Table 8 shows an example of an SRS-Config IE (Information Element), which is used to configure SRS transmission. The SRS-Config IE includes a list of SRS-Resources and a list of SRS-ResourceSets. Each SRS resource set represents a set of SRS-resources.

[0199] The network can trigger the transmission of an SRS resource set using the configured aperiodicSRS-ResourceTrigger (L1 DCI).

[0200] -- ASN1START-- TAG-MAC-CELL-GROUP-CONFIG-STARTSRS-Config ::= SEQUENCE {srs-ResourceSetToReleaseList SEQUENCE (SIZE(1..maxNrofSRS-ResourceSets)) OF SRS-ResourceSetId OPTIONAL, -- Need Nsrs-ResourceSetToAddModList SEQUENCE (SIZE(1..maxNrofSRS-ResourceSets)) OF SRS-ResourceSet OPTIONAL, -- Need Nsrs-ResourceToReleaseList SEQUENCE (SIZE(1..maxNrofSRS-Resources)) OF SRS-ResourceId OPTIONAL, -- Need Nsrs-ResourceToAddModList SEQUENCE (SIZE(1..maxNrofSRS-Resources)) OF SRS-Resource OPTIONAL, -- Need Ntpc-Accumulation ENUMERATED {disabled} OPTIONAL, -- Need S...}SRS-ResourceSet ::= SEQUENCE {srs-ResourceSetId SRS-ResourceSetId,srs-ResourceIdList SEQUENCE (SIZE(1..maxNrofSRS-ResourcesPerSet)) OF SRS-ResourceId OPTIONAL, -- Cond SetupresourceType CHOICE {aperiodic SEQUENCE {aperiodicSRS-ResourceTrigger INTEGER (1..maxNrofSRS-TriggerStates-1),csi-RS NZP-CSI-RS-ResourceId OPTIONAL, -- Cond NonCodebookslotOffset INTEGER (1..32) OPTIONAL, -- Need S...,[[aperiodicSRS-ResourceTriggerList SEQUENCE (SIZE(1..maxNrofSRS-TriggerStates-2))OF INTEGER (1..maxNrofSRS-TriggerStates-1) OPTIONAL -- Need M]]},semi-persistent SEQUENCE {associatedCSI-RS NZP-CSI-RS-ResourceId OPTIONAL, -- Cond NonCodebook...},periodic SEQUENCE {associatedCSI-RS NZP-CSI-RS-ResourceId OPTIONAL, -- Cond NonCodebook...}},usage ENUMERATED {beamManagement, codebook, nonCodebook, antennaSwitching},alpha Alpha OPTIONAL, -- Need Sp0 INTEGER (-202..24) OPTIONAL, -- Cond SetuppathlossReferenceRS PathlossReferenceRS-Config OPTIONAL, -- Need Msrs-PowerControlAdjustmentStates ENUMERATED { sameAsFci2, separateClosedLoop} OPTIONAL, -- Need S...,[[pathlossReferenceRSList-r16 SetupRelease { PathlossReferenceRSList-r16} OPTIONAL -- Need M]]}PathlossReferenceRS-Config ::= CHOICE {ssb-Index SSB-Index,csi-RS-Index NZP-CSI-RS-ResourceId}SRS-PosResourceSet-r16 ::= SEQUENCE {srs-PosResourceSetId-r16 SRS-PosResourceSetId-r16,srs-PosResourceIdList-r16 SEQUENCE (SIZE(1..maxNrofSRS-ResourcesPerSet)) OF SRS-PosResourceId-r16OPTIONAL, -- Cond SetupresourceType-r16 CHOICE {aperiodic-r16 SEQUENCE {aperiodicSRS-ResourceTriggerList-r16 SEQUENCE (SIZE(1..maxNrofSRS-TriggerStates-1))OF INTEGER (1..maxNrofSRS-TriggerStates-1) OPTIONAL, -- Need M...},semi-persistent-r16 SEQUENCE {...},periodic-r16 SEQUENCE {...}},alpha-r16 Alpha OPTIONAL, -- Need Sp0-r16 INTEGER (-202..24) OPTIONAL, -- Cond SetuppathlossReferenceRS-Pos-r16 CHOICE {ssb-IndexServing-r16 SSB-Index,ssb-Ncell-r16 SSB-InfoNcell-r16,dl-PRS-r16 DL-PRS-Info-r16} OPTIONAL, -- Need M...}SRS-SpatialRelationInfo ::= SEQUENCE {servingCellId ServCellIndex OPTIONAL, -- Need SreferenceSignal CHOICE {ssb-Index SSB-Index,csi-RS-Index NZP-CSI-RS-ResourceId,srs SEQUENCE {resourceId SRS-ResourceId,uplinkBWP BWP-Id}}}SRS-SpatialRelationInfoPos-r16 ::= CHOICE {servingRS-r16 SEQUENCE {servingCellId ServCellIndex OPTIONAL, -- Need SreferenceSignal-r16 CHOICE {ssb-IndexServing-r16 SSB-Index,csi-RS-IndexServing-r16 NZP-CSI-RS-ResourceId,srs-SpatialRelation-r16 SEQUENCE {resourceSelection-r16 CHOICE {srs-ResourceId-r16 SRS-ResourceId,srs-PosResourceId-r16 SRS-PosResourceId-r16},uplinkBWP-r16 BWP-Id}}},ssb-Ncell-r16 SSB-InfoNcell-r16,dl-PRS-r16 DL-PRS-Info-r16}SRS-ResourceId ::= INTEGER (0..maxNrofSRS-Resources-1).

[0201] In Table 8, usage represents a higher layer parameter indicating whether the SRS resource set is used for beam management, codebook-based or non-codebook-based transmission. The usage parameter corresponds to the L1 parameter 'SRS-SetUse'. 'spatialRelationInfo' or 'spatialRelationInfoPos-r16' is a parameter indicating the setting of the spatial relation between a reference RS and a target SRS. Here, the reference RS can be an SSB, CSI-RS, or SRS corresponding to the L1 parameter 'SRS-SpatialRelationInfo'. The usage is set for each SRS resource set. If the SRS is set by 'SRS-PosResourceSet-r16', the reference RS can correspond to a DL PRS (Positioning reference signal), and the usage can be set for each SRS resource set.

[0202] The terminal determines the Tx beam for the SRS resource to be transmitted based on the SRS-SpatialRelation Info included in the SRS-Config IE (S1020). Here, the SRS-SpatialRelation Info is set for each SRS resource and indicates whether to apply the same beam as the beam used in SSB, CSI-RS, or SRS for each SRS resource. In addition, the SRS-SpatialRelationInfo may or may not be set for each SRS resource.

[0203] If SRS-SpatialRelationInfo is set in the SRS resource, the same beam used in SSB, CSI-RS, or SRS is applied for transmission. However, if SRS-SpatialRelationInfo is not set in the SRS resource, the terminal randomly determines a Tx beam and transmits SRS through the determined Tx beam (S1030).

[0204] More specifically, for P-SRS with 'SRS-ResourceConfigType' or 'SRS-PosResource-r16' set to 'periodic':

[0205] i) If SRS-SpatialRelationInfo or SRS-PosResource-r16 is set to 'SSB / PBCH', the UE transmits the corresponding SRS resource by applying a spatial domain transmission filter that is the same as (or generated from) the spatial domain Rx filter used for receiving the SSB / PBCH; or

[0206] ii) If SRS-SpatialRelationInfo or SRS-PosResource-r16 is set to 'CSI-RS', the UE transmits the SRS resource by applying the same spatial domain transmission filter used for reception of periodic CSI-RS or SP (semi-persistent) CSI-RS; or

[0207] iii) If SRS-SpatialRelationInfo or SRS-PosResource-r16 is set to 'SRS', the UE transmits the corresponding SRS resource by applying the same spatial domain transmission filter used for transmitting periodic SRS.

[0208] iv) If spatialRelationInfoPos-r16 is set to 'PRS', the UE transmits the corresponding SRS resource by applying the same spatial domain transmission filter used for receiving DL PRS.

[0209] Beam decision and transmission behavior similar to the above can be applied even when 'resourceType' in 'SRS-Resource' or 'SRS-PosResource-r16' is set to 'SP-SRS' or 'AP-SRS'.

[0210] Additionally, the terminal may or may not receive feedback on SRS from the base station in the following three cases (S1040).

[0211] i) If Spatial_Relation_Info is set for all SRS resources within the SRS resource set, the terminal transmits SRS using the beam indicated by the base station. For example, if Spatial_Relation_Info indicates the same SSB, CRI, or SRI, the terminal repeatedly transmits SRS using the same beam. This case corresponds to Fig. 13(a) for the purpose of the base station selecting the Rx beam.

[0212] ii) Spatial_Relation_Info may not be set for all SRS resources within the SRS resource set. In this case, the terminal can freely change the SRS beam while transmitting. That is, this case corresponds to Fig. 13(b) for the purpose of the terminal sweeping the Tx beam.

[0213] iii) Spatial_Relation_Info may be set only for some SRS resources within an SRS resource set. In this case, SRS is transmitted using the indicated beam for the set SRS resources, and for SRS resources for which Spatial_Relation_Info is not set, the terminal may arbitrarily apply a Tx beam for transmission.

[0214] BM procedure in improved wireless communication systems

[0215] To ensure flexibility in beam indication in a basic wireless communication system, beams are indicated separately for each DL / UL channel / RS resource, and the indication method can be set for each channel / RS.

[0216] In the above-mentioned instruction method, in order to change the serving beam of multiple terminals communicating with the base station using a single beam, the base station must instruct each terminal to change the beam for each channel / RS resource. This can lead to increased signaling overhead and increased beam change latency.

[0217] Additionally, since UL power control related parameters (e.g., pathloss RS (PL RS)) must be changed for each UL channel / RS along with UL beam changes, there was a signaling overhead / latency problem.

[0218] To address this, the improved wireless communication system may apply i) default spatial relation / PL RS configuration, ii) multi-CC simultaneous TCI / spatial relation update, iii) PUCCH resource group configuration based on spatial relation update, iv) MAC CE-based spatial relation indication for aperiodic / semi-persistent SRS, and v) MAC CE-based PL RS update for aperiodic / semi-persistent SRS and PUSCH.

[0219] Additionally, in an improved wireless communication system, a base station can configure not only channel measurement RSs but also interference measurement resources for a terminal. The terminal can measure L1-SINR for the configured channel measurement RSs and interference measurement resources, and report one or more RSs corresponding to one or more LI-SINRs with a larger value among the measured L1-SINRs.

[0220] In addition, the method described below can be applied to set / indicate a beam in an integrated channel / RS manner for a terminal operating with a single serving beam. Hereinafter, the TCI that sets / indicates a beam in an integrated channel / RS manner for a terminal is referred to as an unified TCI state.

[0221] Specifically, the DL unified TCI state may indicate a QCL type-D RS applied to PDCCH, PDSCH, and / or CSI-RS resources, and the UL unified TCI state may indicate a spatial relationship RS (and / or PL RS) applied to PUCCH, PUSCH, and / or SRS resources.

[0222] In addition, for terminals where beam correspondence is established (as with the default spatial relationship / PL RS), the UL spatial relationship and PL RS can also be aligned with the DL beam RS, so that the unified TCI state can be applied to both DL / UL channels / RS. The unified TCI state that can be applied to both DL / UL channels / RS is called a joint DL / UL TCI state, and the following two modes can be supported.

[0223] i) Joint DL / UL TCI configuration / indication mode: The DL RS configured / indicated by the Joint TCI state can be applied as a QCL type-D RS for DL ​​channels / RSs. As another example, the DL RS configured / indicated by the Joint TCI state can also be applied as a spatial relationship RS (or / and PL RS) for UL channels / RSs. That is, when an update to the joint TCI state is indicated, the beam RS (or / and PL RS) for the corresponding DL channel / RSs and UL channels / RSs can be changed together.

[0224] ii) Separate DL and UL TCI setting / indication mode: QCL type-D source RS for DL ​​channels / RSs can be set / indicated by the DL TCI state, and spatial relationship RS (or / and PL RS) for UL channels / RSs can be set / indicated by the UL TCI state. In this case, the DL TCI state and UL TCI state can be set / indicated separately.

[0225] The above joint DL / UL TCI state can be indicated / updated via MAC-CE and / or DCI. Specifically, one or more TCI state(s) among multiple TCI states (i.e., TCI state pool) set by RRC signaling can be activated by MAC-CE.

[0226] When multiple TCI states are activated by MAC-CE, one of the multiple TCI states may be indicated by DCI. One of the multiple TCI states may be indicated by DL DCI format (DCI format 1-1 / 1-2) (or / and DCI without PDSCH scheduling). If the DCI does not include PDSCH scheduling information, the UE may transmit an ACK for the corresponding DCI to the base station (similar to the DCI-based SPS release method).

[0227] Additionally, the terminal can measure and report the optimal beam RS for each TRP. To this end, the base station can divide the beam measurement RS set / group into one or more subsets / subgroups and configure them for the terminal. The terminal can select one or more RS(es) for each subset / subgroup and report the selected RS along with its quality value (L1-RSRP, [L1-SINR]) to the base station.

[0228] Terminal-initiated reporting

[0229] In wireless communication systems, layer-1 (or physical layer) uplink control information has the advantage of shorter transmission delay than higher-layer control information. For example, for a terminal to transmit information to a base station using layer-2 MAC-CE signaling or layer-3 RRC message, a scheduling request (SR) procedure by the terminal and a PUSCH resource allocation procedure by the base station (based on the SR) may be required, resulting in time delay and overhead. Furthermore, higher-layer information generally requires longer information acquisition times (e.g., decoding time, processing time, etc.). In order for a terminal to transmit layer-1 uplink control information, physical uplink channel (e.g., PUCCH, PUSCH) resources must be configured / allocated (in advance) to the terminal. Therefore, from the base station / network's perspective, the more terminals / UEs there are, the more uplink (UL) resources must be allocated to each terminal / UE, which may increase the burden of overall UL resource overhead.

[0230] Therefore, in a wireless communication system, information that must be transmitted relatively urgently for the operation of the physical layer, such as SR (e.g., control information for PUSCH allocation), HARQ-ACK (e.g., control information for retransmission), CSI (e.g., control information for scheduling / MCS / precoding decisions), beam information (e.g., control information for beam decision / beamforming)) can be transmitted from the terminal to the network as physical layer uplink control information (UCI). With the exception of SR among these UCIs, the base station / network can determine / control the timing of the terminal's control information reporting. In the case of such network-initiated or network-triggered reporting, there is a limitation that the terminal must be configured / instructed to send UCI frequently in an environment where the wireless channel is likely to change rapidly (or is highly likely). In other words, in these environments, the UL resource overhead for UCI reporting and the associated DL measurement RS overhead increase, and the power consumption of the terminals also increases due to frequent uplink transmissions. Furthermore, since UL resources must be allocated to each terminal, the UL resource overhead increases as the number of terminals within cell / TRP coverage increases.

[0231] To overcome the limitations of these NW-initiated / triggered reporting methods, terminal-initiated / triggered reporting methods or event-initiated / induced reporting methods are being discussed. In these methods, whether and / or when to report UCI can be determined by the terminal. That is, by performing the (UCI) report only when necessary (e.g., only when a specific event occurs), there is the advantage of performing rapid control information reporting through layer-1 (or lower layer)-based information reporting while reducing UL resource overhead and terminal power consumption.

[0232] In this regard, the introduction of UE-initiated or event-driven beam management or beam reporting is being discussed to reduce overhead and / or latency. Such UE-initiated beam management takes into account unified TCI and can be applied to various frequency ranges and network node structures, including Frequency Range 2 (FR2) and Single Transmission Relay (S-TRP), and can also be applied to intra-cell and inter-cell beam management. In this regard, uplink signaling content(s) for UE-initiated / event-induced beam reporting need to be defined for fast beam switching, and procedures for the same need to be defined. In addition, an uplink signaling medium / container needs to be defined considering the UE-initiated / event-driven nature of uplink transmission, which is primarily designed for the purpose of beam reporting.

[0233] In the present disclosure, beam reporting may mean CSI reporting including terminal measurement information for a beam (e.g., L1-RSRP, L1-SINR, etc.) and / or identification information for the beam (e.g., CSI-RS resource index, SSB resource index, etc.). For beam reporting corresponding to one type of existing NW-initiated / triggered CSI reporting (or CSI feedback), the network may provide the terminal with UL resources and reporting configurations for beam reporting in advance, and the terminal may perform beam reporting accordingly. In contrast, for terminal-initiated / event-induced beam reporting, an event for beam reporting is set / defined for the terminal, and the terminal may determine whether an event occurs and perform beam reporting only when the event occurs.

[0234] In existing wireless communication systems (e.g., NR systems), typical examples of event-based or UE-initiated / triggered reporting information include scheduling request (SR) and beam failure recovery (BFR). SR reports whether PUSCH allocation is required for uplink-shared channel (UL-SCH) transmission, and BFR reports whether a beam failure (BF) has occurred and new beam-related information. This information can be conveyed / transmitted to the base station explicitly or implicitly (e.g., implicitly indicating a new beam index through PRACH resource selection information), and can be conveyed all at once or in parts through one or two UL resources (e.g., beam failure recovery request (BFRQ) through PUCCH and beam information through MAC CE on PUSCH). In the present disclosure, information transmitted from a terminal to a network based on an event occurring at the terminal and / or in a manner initiated or triggered by the terminal (e.g., SR, BFRQ, new beam information, etc.) is collectively referred to as “event information.”

[0235] Next, all CSI reports in existing wireless communication systems are initiated / triggered by the network, and a new CSI report initiated / triggered by the terminal can be introduced as a distinct method.

[0236] Event-based CSI reporting can be reported via UCI or MAC CE. When reporting via UCI or MAC CE, if no UL resources (e.g., available UL-SCH) capable of transmitting the information are allocated / configured, a PUSCH / PUCCH allocation request can be requested from the base station via a procedure such as a scheduling request (SR). In the present disclosure, the UL resource through which information requesting PUSCH / PUCCH allocation is transmitted can be referred to as a first resource, and the UL resource through which the CSI report is transmitted can be referred to as a second resource.

[0237] Alternatively, the base station may pre-configure / allocate UL resources (e.g., PUCCH / PUSCH) for event-based reporting to the UE. If the UE performs UCI / MAC-CE-based CSI reporting through these pre-configured / allocated UL resources, the base station may need to constantly monitor them, as the UE may perform CSI reporting at any time through the UL resources. To alleviate or eliminate this burden, the UE may pre-notify the base station that it will perform transmission through the pre-configured / allocated UL resources through a separate (e.g., with a small payload / overhead) UL resource (e.g., a short PUCCH, SR PUCCH, PRACH, etc.). In the present disclosure, the UL resource supporting the aforementioned separate / small payload size may be referred to as a first resource, and the UL resource through which the CSI report is transmitted may be referred to as a second resource. For example, a PUCCH or PRACH resource capable of transmitting one to several bits of information may be considered as a first resource, and a PUCCH or (configured grant or semi-persistent) PUSCH resource capable of transmitting several tens of bits or more of information may be considered as a second resource. As described above, the first resource is not always required, and if the base station is not burdened with monitoring UL resources and / or the amount of the second resource is not large, CSI reporting using only the second resource without the first resource is also possible.

[0238] The quantity of this CSI, i.e. the reported content, may include not only traditional channel state information such as CRI / RI / PMI / CQI / LI, but also beam information such as CSI-RS resource index / SSB index / L1-RSRP / L1-SINR. In addition, CSI may include explicit feedback information about the measured channel / interference. For example, CSI may include quantized values ​​of the eigenvector and eigenvalue of the measured channel, or may include values ​​obtained by appropriately decomposing the measured channel and quantizing only the meaningful channel information. To save payload, this channel information may be compressed and quantized. In addition, the following events and the corresponding quantity information for each event may be included in the CSI.

[0239] Events related to various reports initiated / triggered by the terminal may include, but are not limited to, the following examples:

[0240] Event-1: Current beam quality is worse than a certain threshold.

[0241] Event-2: The quality of one or more new beams (e.g. L1-RSR) is better than the current beam by a certain threshold.

[0242] Event 3: The quality of the new beam is better than a certain threshold.

[0243] Event-4: The quality of the current beam is worse than the first threshold, and the quality of at least one new beam is better than the second threshold.

[0244] As described above, a terminal can report the occurrence of an event to the network via a first resource, and then report quality-related information about the event to the network via a second resource. To achieve this, the terminal must complete processing (e.g., CSI calculation / encoding) of the quality-related information about the event between the first report on the first resource and the second report on the second resource.

[0245] In the present disclosure, the time from the end of the first resource (i.e., completion of the first report) to the start of the second resource (i.e., start of the second report) may be defined as X time units (e.g., X symbols or X slots). If the value of X is too small, the terminal may not complete processing of information to be reported and may not be able to perform reporting on the second resource. Alternatively, if the value of X is too large, the time elapsed from the occurrence of an event to the reporting of information about the event may become long, so that invalid information may be reported at the time of reporting, and the latency of event-based reporting may increase, which may not meet the purpose of event-based reporting of low overhead and low latency.

[0246] Assuming that the reported information is CSI, depending on the type of CSI, CSI processing may already be completed at the time the first report is performed on the first resource, and the second resource may report the processed CSI value as is. For example, assuming that an event trigger condition is set when the L1-RSRP of a specific RS becomes greater than a specific value, and the L1-RSRP is reported on the second resource as the event quantity, since the quantity calculation has already been completed at the time of the first report on the first resource, the second report can be performed on the second resource without additional CSI processing after the first report is transmitted on the first resource. As another example, when complex calculations such as RI / PMI / CQI or explicit channel information are required, even if the information is not yet fully calculated at the time of the first resource report, a trigger may be first performed based on the measured channel characteristics (e.g., RSRP, SINR, or dominant eigenvalue / eigenvector of the channel, magnitude and direction of interference channel), and then the calculation of the actual report quantity may start after the first resource report. In this case, a problem may arise that the second report is not ready at the time of the second resource report.

[0247] Below, various examples of the present disclosure for solving these problems are described.

[0248] In the present disclosure, defining information / values ​​may mean that the base station and the terminal know the information / values ​​in advance without signaling / instruction between the base station and the terminal regarding the information. In the present disclosure, setting information / values ​​to the terminal may mean that the base station provides the information / values ​​to the terminal through upper layer (e.g., L3) signaling. In the present disclosure, indicating information / values ​​to the terminal may mean that the base station provides the information / values ​​to the terminal through L2 / L1 signaling such as MAC CE or DCI.

[0249] FIG. 15 is a drawing for explaining an example of a method performed by a terminal according to the present disclosure.

[0250] In step S1510, the terminal may transmit a first report to the network, initiated by the terminal based on one or more events on the first resource.

[0251] In step S1520, the terminal may transmit a second report to the network on a second resource. The second resource may start a predetermined number of time units after the reference time unit. For example, the time unit may be a symbol, a symbol group, a slot, or a slot group.

[0252] Here, a predetermined number (X) of time units may correspond to a time interval between a reference resource and a second resource. A predetermined minimum value (T) and / or a predetermined maximum value (M) may be applied to X. That is, a range for valid X may be preset or predefined. Accordingly, the terminal may not expect X below the predetermined minimum value and / or above the predetermined maximum value, or may ignore such X.

[0253] In some examples, if the reference time unit corresponds to the time unit at which the first resource ends, a predetermined number (X) may be given (e.g., set / indicated / defined) based on X1. For example, X1 may be applied as X as it is, or X may be finally determined by taking other factors (e.g., X2 and / or X3) into consideration. A minimum value T1 and / or a maximum value M1 may be given for X1.

[0254] In some examples, if the reference time unit corresponds to a time unit at which resources for channel measurement and / or interference measurement for the second report end, a predetermined number (X) may be given based on X2. For example, X2 may be applied as X as it is, or X may be finally determined by taking other factors (e.g., X1 and / or X3) into consideration. A minimum value T2 and / or a maximum value M2 may be given for X2.

[0255] In some examples, if the reference time unit corresponds to a time unit at which a window associated with one or more events ends (e.g., a window of a predetermined length as a criterion for counting the number of event occurrences), the predetermined number (X) may be given based on X3. For example, X3 may be applied as X as it is, or X may be finally determined by taking other factors (e.g., X1 and / or X2) into consideration. A minimum value T3 and / or a maximum value M3 may be given for X3.

[0256] In some examples, the second resource may start X time units after the reference time unit, determined based on X1, X2, and / or X3. For example, X may be given in the range greater than or equal to T1, T2, and / or T3. For example, X may be given in the range less than or equal to M1, M2, and / or M3. For example, X may be given in the range greater than or equal to T1, T2, and / or T3 and less than or equal to M1, M2, and / or M3.

[0257] In some examples, terminal capability information including one or more candidates for the minimum value T of X may be reported in advance from the terminal to the network. Based on the one or more candidates for the minimum value T, the network may provide (or set / instruct) the terminal with a minimum value T to be applied to the terminal (e.g., any one of the one or more candidates, or a value greater than one or more candidates (if one or more candidates are not appropriate from the base station's perspective)).

[0258] In some examples, the minimum value T of X may be derived by applying scaling up / down (e.g., multiplying or dividing by a given scaling value) or applying an offset (e.g., adding or subtracting a given offset value) to Z or Z'. Here, Z and Z' may correspond to parameters defined in relation to CSI reporting triggers and CSI reporting in existing communication systems.

[0259] For example, Z may correspond to the length of time between the end of the last symbol of the DCI / PDCCH that triggers the CSI report of the terminal and the start of the CSI report symbol. For example, Z' may correspond to the length of time between the end of the last symbol in time of the latest of among the aperiodic CSI-RS resource for channel measurement, the aperiodic CSI-IM (interference measurement) resource for interference measurement, and the aperiodic non-zero power (NZP) CSI-RS resource for interference measurement and the start of the CSI report symbol.

[0260] In some examples, the minimum value T for X may be given for each of one or more events.

[0261] For example, it can be assumed that a first minimum value (Ta) of X is applied to a first event (a), a second minimum value (Tb) of X is applied to a second event (b), and second reports are transmitted for the first event and the second event. In this case, X may be greater than or equal to the sum of the first minimum value (Ta) and the second minimum value (Tb). Alternatively, X may be greater than or equal to the maximum of the first minimum value (Ta) and the second minimum value (Tb).

[0262] In some examples, the second resource may be scheduled based on control information provided from the network after the first report (e.g., a UL grant of DCI). Alternatively, the second resource may correspond to one of the pre-configured candidate resources (e.g., periodically configured candidate resources, semi-persistently configured candidate resources, or candidate resources based on a configured grant) that is located after the first report.

[0263] In the examples described above, the expression that the second resource starts a predetermined number of time units after the reference time unit may mean, for example, that a fist uplink time unit of the second resource to carry the second report, including a timing advance, starts no earlier than at a specific time unit, where the specific time unit may be defined as a next uplink time unit starting a predetermined minimum value after an end of a last time unit of the reference resource.

[0264] The method described in the example of FIG. 15 may be performed by the first wireless device (100) of FIG. 20, which will be described later. For example, one or more processors (102) of the first wireless device (100) of FIG. 20 may be configured to transmit a first report initiated by a terminal based on one or more events on a first resource to the network via one or more transceivers (106), and to transmit a second report on a second resource starting a predetermined number of time units after a reference time unit to the network via one or more transceivers (106). Furthermore, one or more memories (104) of the first wireless device (100) may store commands for performing the method described in the example of FIG. 15 or the examples described later when executed by one or more processors (102).

[0265] FIG. 16 is a drawing illustrating an example of a method performed by a base station according to the present disclosure.

[0266] In step S1610, the base station may receive a first report from a terminal, which is initiated by the terminal based on one or more events, on a first resource.

[0267] In step S1620, the base station may receive a second report from the terminal on a second resource starting a predetermined number of time units after the reference time unit.

[0268] Specific characteristics of the first resource, the second resource, the reference time unit, the predetermined number of time units, the minimum value and the maximum value thereof, etc. are the same as those described with reference to the example of Fig. 15, so redundant descriptions are omitted.

[0269] The method described in the example of FIG. 16 may be performed by the second wireless device (200) of FIG. 20, which will be described later. For example, one or more processors (202) of the second wireless device (200) of FIG. 20 may be configured to receive, from the terminal via one or more transceivers (206), a first report initiated by the terminal based on one or more events on a first resource, and to receive, from the terminal via one or more transceivers (206), a second report on a second resource that starts a predetermined number of time units after a reference time unit. Furthermore, one or more memories (204) of the second wireless device (200) may store commands for performing the method described in the example of FIG. 16 or the examples described later when executed by one or more processors (202).

[0270] Although the present disclosure primarily describes event-based terminal-initiated (UEI) CSI reporting as a representative example, the examples of the present disclosure can also be applied to other types of terminal reporting information (e.g., beam-related information, beam-failure-related information, SR, HARQ-ACK, etc.), and / or can also be applied to cases where terminal uplink transmission information (e.g., UL data, UL-SCH, UL TB, etc.) is performed in an event-based (or terminal-initiated / triggered manner).

[0271] In the examples of the present disclosure, when an event related to a specific report occurs, the terminal's request to the network for scheduling on the UL channel for the report may include the terminal notifying the network of the event occurrence itself. That is, the terminal may directly request scheduling on the uplink channel from the network, or the terminal may only notify the network of the occurrence of the event, and the network may determine whether to schedule the uplink channel.

[0272] In the examples of this disclosure, the identifier (ID) may be replaced with an index.

[0273] The term 'beam' in the present disclosure may correspond to a source RS for a spatial filter or a spatial relation, or a QCL (type-D) RS, or a (DL / UL / joint) TCI state, or a spatial relation RS.

[0274] In the present disclosure, whether the examples of the present disclosure are applicable and / or various time-related parameters (e.g., minimum value T, maximum value M, inter-report measurement resource location P, etc.) described in the examples of the present disclosure may vary depending on the definition of an event or the event triggering conditions. For example, when determining whether an event has occurred based on the overall RSRP / SINR of a measurement RS port and performing an event trigger, then processing CSI based on the corresponding RS and performing CSI reporting after the CSI processing is completed, the examples of the present disclosure may be applicable. Alternatively, when defining an event / triggering condition based on whether PMI is updated, the examples of the present disclosure may not be applicable because the calculation of PMI must already be completed before the first report.

[0275] Below, various examples of the present disclosure related to event-based or terminal-initiated / triggered reporting are described.

[0276] Example 1

[0277] This embodiment is about a method of setting / limiting the value of X to be greater than or equal to T, which is the minimum time required for processing the second report.

[0278] FIG. 17 is a diagram illustrating examples of reference time units and second resources related to a first resource according to the present disclosure. The examples in FIG. 17 may correspond to a case where the reference resource is the first resource (or an ending time unit of the first resource).

[0279] In the example of Figure 17(a), the terminal may transmit an SR to the network to request uplink resources for event reporting on a first resource. The base station may provide the terminal with uplink scheduling information (e.g., via DCI) to schedule a second resource on which the terminal will perform event reporting. Accordingly, the terminal may transmit an event report on the second resource.

[0280] Here, the time interval from the first resource (or the end of the last time unit of the first resource) to the second resource (or the start of the first time unit of the second resource) may correspond to X1. When the base station schedules the second resource, the value of X1 may be set to be greater than or equal to the value of T1, so that the terminal may complete processing of the event report information during the given time X1. If the value of X1 is set to be less than the value of T1, the terminal may not complete processing of the corresponding event report information, and thus the terminal may not perform the corresponding event report, or may ignore (or treat as an error) the uplink scheduling information or configuration of the base station. In other words, the terminal may expect that the value of X1 is set to be greater than or equal to the value of T1.

[0281] In the example of Fig. 17(b), it shows a case where candidate resources that can be used as a second resource are set for the terminal. The candidate resources can be preset for the terminal based on periodic, semi-persistent, or a set grant (CG). The terminal can transmit information notifying the occurrence of an event in the first resource or event trigger information to the network. The terminal can perform a quantum report for the event in the second resource. Here, after the first report in the first resource is completed, the terminal can perform a second report in the earliest candidate resource among the preset candidate resources after a time unit of T1. That is, the second report can be performed in the second resource that satisfies the value X1 that is greater than or equal to the value T1 in the time interval from the first resource (or the end of the last time unit of the first resource) to the second resource (or the start of the first time unit of the second resource).

[0282] FIG. 18 is a diagram illustrating other examples of reference time units related to a first resource and a second resource according to the present disclosure. The example of FIG. 18 may correspond to a case where the reference resource is a resource for channel measurement and / or interference measurement for a second report (or a time unit at which the resource ends / starts).

[0283] In the example of FIG. 18, the time from the resource for channel measurement and / or interference measurement before the first resource to which the first report is transmitted (or the end of the last time unit of the resource, or the start of the first time unit of the resource) to the second resource (or the start of the first time unit of the second resource) may be referred to as X2, and the minimum value thereof may be referred to as T2.

[0284] For example, the time from the channel / interference measurement time point before the first resource to the second resource may be considered as the time for processing event report information. For example, the terminal may complete processing of channel measurement / interference measurement, CSI calculation, CSI encoding, etc. during T2 time units after the latest (or earliest) time unit among the last (or first) time units of the RS (resource) of the latest channel measurement / interference measurement before the first resource.

[0285] Therefore, if the given (e.g., configured) time from the latest (or earliest) time unit among the last (or first) time units of the latest channel measurement / interference measurement RS (resource) before the first report in the first resource to just before the second report in the second resource is X2, the terminal can perform the second report if X2 is greater than or equal to T2. The terminal may expect that X2 will not be given less than T2. ​​Alternatively, the terminal may not perform the second report if X2 less than T2 is given.

[0286] The example of Fig. 18(a) shows a case where X2 is greater than or equal to T2 when the second resource is dynamically scheduled, and the example of Fig. 18(b) shows a case where the second report is performed on the first candidate resource corresponding to X2 greater than or equal to T2 among the preset candidate resources available as the second resource.

[0287] Although the example of FIG. 18 illustrates a case where the latest point in time of the channel measurement / interference measurement resource is applied as a reference resource, a case where the earliest point in time of the channel measurement / interference measurement resource is applied is also included in the scope of the present disclosure.

[0288] FIG. 19 is a diagram illustrating further examples of reference time units associated with a first resource and a second resource according to the present disclosure. The example in FIG. 19 may correspond to a case where the reference resource is a time unit at which a window (or event evaluation window) associated with an event ends.

[0289] In the example of Fig. 19, the time from the window related to the event (or the end of the last time unit of the window) to the second resource (or the start of the first time unit of the second resource) may be referred to as X3, and the minimum value thereof may be referred to as T3.

[0290] For example, the time from the event-related window (or event evaluation window) before the first resource to the second resource may be considered as the time for processing event report information. For example, at a point in time before the first resource, the terminal may perform an event evaluation to determine whether an event has occurred, and if it is evaluated that a predetermined event condition is satisfied, an event instance is generated. If such an event instance has occurred a predetermined number of times or more within the event evaluation window, the terminal may transmit a first report indicating that an event has occurred from the first resource. If the event has not occurred within the event evaluation window or the number of event instances is less than the predetermined number, the terminal may transmit a second report indicating that an event has not occurred from the first resource. When the event evaluation window ends, event verification is complete, and the terminal may then begin processing (e.g., calculating CSI, beam information, etc.) the report information to be reported from the second resource.

[0291] Therefore, if the given time from immediately after the event evaluation window set before the first resource to immediately before the second resource is X3, the terminal can perform the second report if X3 is greater than or equal to T3. The terminal can expect that X3 will not be given less than T3. Alternatively, the terminal may not perform the second report if X3 is given less than T3.

[0292] The example of Fig. 19(a) shows a case where X3 is greater than or equal to T3 when the second resource is dynamically scheduled, and the example of Fig. 19(b) shows a case where the second report is performed on the first candidate resource corresponding to X3 greater than or equal to T3 among the preset candidate resources available as the second resource.

[0293] In the examples described above, the time intervals to the second resource are distinguished as X1, X2, X3 depending on the type / setting of the reference resource, and the minimum values ​​T1, T2, T3 for each are distinguished and described. In the examples described below, when these are not distinguished and are collectively referred to as X and the minimum value T for X, they may be replaced with X1, X2, X3 / T1, T2, T3, respectively, or may include X values ​​and T values ​​based on one or more of X1, X2, X3 / T1, T2, T3 (for example, the earliest or latest among X1, X2, X3 / T1, T2, T3).

[0294] Example 2

[0295] This embodiment describes a method for setting the T value for each event.

[0296] For example, the T value can be set / defined based on the event type, per event, or independently. For example, a larger T value can be set / defined for events requiring more complex CSI processing, allowing the terminal to use more time for CSI processing.

[0297] For example, traditional channel state information (e.g., CRI / RI / PMI / CQI / LI) generally requires more computation than beam information (e.g., CSI-RS resource index / SSB index / L1-RSRP / L1-SINR). Therefore, the T value for traditional channel state information reporting may be set to be larger than the T value for beam reporting.

[0298] Even within channel state information reporting, the complexity may be low if the information is for wideband / Type I PMI codebook / low maximum rank, and high if the information is for subband / Type II PMI codebook / high maximum rank. Even within beam reporting, the complexity may be low if the information is for RSRP / non-group-based beam reporting / small number of channel measurement resources (e.g., CSI-RS resources / SSB), and high if the information is for SINR / group-based beam reporting / large number of channel measurement resources. Since the CSI processing time may also vary depending on the complexity, the T value may be set differently taking this into account.

[0299] When channel information is compressed or explicit feedback is applied, the computational complexity may be greater or less than that of traditional channel state information (e.g., CRI / RI / PMI / CQI / LI). Accordingly, the T value may be set larger or smaller for compression-based or explicit feedback compared to traditional channel state information.

[0300] Example 3

[0301] This embodiment is about terminal capability-based operation for T values.

[0302] Since the T value may vary depending on terminal performance / implementation, one or more candidate values ​​may be reported to the base station as terminal capability information. Furthermore, the base station may reference the terminal capabilities for the T value candidates to ultimately set / indicate the T value to be applied to the terminal.

[0303] For example, if the T value supported by the terminal capability is very small, and it is assumed to be applied as is, the second report can be performed within a very short time after the first report is transmitted, and since this is a T value that is supportable from the terminal's perspective, there may be no problem in the terminal's operation. On the other hand, a problem may arise from the base station's perspective of scheduling the second resource.

[0304] For example, if the first report on the first resource is not received by the base station, the base station can schedule the second resource to another terminal to improve resource scheduling efficiency. However, assuming that the terminal follows the terminal capability to report the second resource within a very short time after transmitting the first report on the first resource, the base station may be forced to decide within a very short time whether to schedule the second resource to another terminal. Furthermore, even if the second resource is scheduled to another terminal, the base station may not have enough leeway in its scheduling operation because it must first transmit DCI containing scheduling information for the uplink resource to the other terminal. Therefore, the base station may determine the T value to be ultimately (or actually) applied as a value larger than the T value supported by the terminal capability, and set / instruct the terminal to use this value.

[0305] Alternatively, the base station may arbitrarily determine the T value and set / instruct the terminal without considering or receiving reports on the terminal capabilities.

[0306] Example 4

[0307] This embodiment is about a method of applying the T value as a fixed value or according to a fixed rule.

[0308] Furthermore, even if the T value is basically fixed or a fixed rule is applied, similar to how the base station overrides or unilaterally determines the T value according to the terminal capability in Example 3, the base station may set / instruct the terminal to a different T value (e.g., greater than the fixed T value or the T value according to the fixed rule).

[0309] For example, the T value can be defined as a scaled value of a previously defined Z value or Z' value (i.e., according to a fixed rule with a variable scaling factor applied). Specifically, a value that is scaled up (e.g., multiplied by a value greater than 1), scaled down (e.g., multiplied by a value less than 1, or divided by a value greater than 1), or scaled by a factor of 1 (i.e., equal to) the Z value or Z' value can be applied as the T value.

[0310] Alternatively, the T value may be defined as a value obtained by applying an offset to a previously defined Z value or Z' value (i.e., according to a fixed rule to which a variable offset value is applied). Specifically, a value obtained by adding or subtracting an offset value to or from the Z value or Z' value (or by adding a positive or negative offset value) may be applied as the T value.

[0311] As described above, the values ​​Z and Z' are defined in the case of aperiodic CSI reporting, where Z may correspond to the minimum time required for CSI processing of the terminal from the time point of completion of reception of the DCI (i.e., uplink scheduling DCI) that triggers the aperiodic CSI reporting to the time point of start of transmission of the aperiodic CSI report. Z' may correspond to the minimum time required for CSI processing of the terminal from the last time point of measurement for the aperiodic channel measurement resource (CMR) and interference measurement resource (IMR) to the time point of start of transmission of the aperiodic CSI report. The base station may schedule the time domain resources of the uplink channel to be equal to or greater than the values ​​Z and / or Z'. Otherwise, the terminal is not guaranteed sufficient time for CSI processing, and the terminal cannot properly perform the CSI reporting.

[0312] The terminal may perform calculations including decoding of DCI, CMR / IMR reception, channel / interference measurements, CSI calculations, and CSI encoding that trigger aperiodic CSI reporting during time Z. The terminal may perform calculations of channel / interference measurements, CSI calculations, and CSI encoding during time Z'.

[0313] In the examples of FIGS. 17 to 19, in the example of (a) based on dynamic scheduling, the terminal may perform calculations such as decoding of DCI, calculation of CSI, and CSI encoding during time T, and in the example of (b) based on periodic / semi-persistent / CG scheduling, the terminal may perform calculations of CSI calculation and CSI encoding during time T. That is, in the examples of (a) and (b), since CMR / IMR reception, channel / interference measurement, etc. have already been completed before the first resource (i.e., since whether to transmit the first report is determined based on the result of performing CMR / IMR reception and channel / interference measurement), the calculations do not need to be performed during time T. Therefore, the T value may be set / indicated to be smaller than the Z value or Z' value by scaling down (i.e., multiplying by a value less than / less than 1) or subtracting an offset value (or adding a negative offset value) compared to the existing Z value or Z' value.

[0314] Example 5

[0315] This example provides an example of the value of T for a case where multiple events are triggered.

[0316] A terminal can transmit scheduling requests for multiple events or notify the base station of the occurrence of multiple events through a first report on a first resource. In this case, these multiple events can be reported simultaneously through a second resource. If different T values ​​are set / indicated for each event, the final (or actually applicable) T value can be determined as follows.

[0317] For example, the final T value can be determined as the maximum value among the T values ​​for each event. That is, the final T value can be determined based on the event that requires the greatest CSI processing time among multiple events. This approach can be applied when a terminal performs CSI processing for each event in parallel.

[0318] As another example, the final T value can be determined as the sum of the T values ​​for each event. This approach can be applied when the terminal sequentially performs CSI processing for each event.

[0319] If a specific event is omitted or dropped and no reporting is performed for that event, the T value corresponding to that event may be excluded when determining / calculating the final T value.

[0320] Example 6

[0321] This embodiment is for a maximum value M that is additionally defined / applied to the minimum value T of the X value (i.e., the time interval from the reference resource to the second resource). For example, the maximum value M1 for X1 in the example of FIG. 17, the maximum value M2 for X2 in the example of FIG. 18, and / or the maximum value X3 for X3 in the example of FIG. 19 can be defined and applied.

[0322] The maximum value of X, M, can be introduced to address the problem that when the value of X becomes too large, the elapsed time from the time an event occurs to the time the event is reported increases, resulting in increased latency in event reporting and difficulty in reflecting the latest channel status in the report content. This problem is not suitable for the purpose of introducing event-based (or terminal-initiated / triggered) reporting, which aims for low overhead and low latency. In other words, the increased latency causes event reporting to become outdated, reducing the utility of the reporting. Therefore, the maximum value of M can be introduced to prevent or limit the increase in latency.

[0323] The value X corresponding to the time domain location of the second resource (i.e., the transmission time of the second report) may be determined within a range between a minimum value T for securing processing time of the corresponding report information and a maximum value M for limiting latency. If the value X is not set / indicated within the range between the values ​​T and M, the terminal may not perform the corresponding event report and / or may ignore the corresponding uplink scheduling / configuration of the base station. Alternatively, the terminal may expect the value X to be greater than or equal to the value T and less than or equal to the value M.

[0324] The M value described above can be set / indicated in a similar manner to the above examples for the T value (e.g., per event, based on terminal capabilities, based on a fixed value or fixed rule, for multiple events).

[0325] Example 7

[0326] This embodiment relates to inter-report measurement resource locations. For example, a reporting operation may be defined for a case where a CMR / IMR for channel measurement / interference measurement is located between the first and second reports.

[0327] In the examples described above, it is assumed that after the first report is transmitted on the first resource, the terminal does not process the report information using a new measurement RS / resource, but performs processing for the second report using the measurement RS / resource for the first report as is.

[0328] If a new measurement RS / resource exists after the first resource, processing (e.g., CSI calculation) of the second report information to be reported from the second resource may be performed using this resource. In this case, latency may increase due to the measurement update. Consequently, the aforementioned T value may increase.

[0329] According to the present embodiment, the T value can be defined / set / indicated differently to distinguish between a case where information to be included in a second report is processed and calculated using a new measurement RS / resource after the first report, and a case where information to be included in a second report is processed using the same measurement RS / resource used in the first report without using a new measurement RS / resource after the first report.

[0330] The measurement RS / resources set after the first resource and before the second resource can be referred to as inter-report CMR / IMR. The terminal can calculate the quantity for event reporting after re-measuring the channel based on the inter-report CMR / IMR (i.e., performing channel measurements in addition to the channel measurements for the first report). Alternatively, the terminal can ignore the inter-report CMR / IMR and calculate the quantity for event reporting using the same CMR / IMR previously used for channel measurements for the first report.

[0331] If the time position of the second resource is t (e.g., the start time of the second resource), if the inter-report CMR / IMR is set at a position before the time tP (i.e., closer to the first resource), it is determined that there is sufficient time for the terminal to calculate the quantity, and thus the quantity calculation can be performed using the inter-report CMR / IMR. If the inter-report CMR / IMR is set at a position after the time tP (i.e., closer to the second resource), it is determined that there is not sufficient time for the terminal to calculate the quantity, and thus the quantity calculation can be performed using the CMR / IMR set before the first resource (or on which the first report is based).

[0332] More specifically, P is P1 and P2( <P1) 등으로 세분화되어 보고-간 측정 자원이 위치할 수 있는 구간을 3 개 이상으로 세분화할 수도 있다. 이 경우, t-P1 부터 t-P2 까지의 시간 구간 내에 설정된 보고-간 CMR / IMR에 기반하여 퀀터티 계산을 수행할 수 있다. 그 외의 시간 구간(즉, t부터 t-P2까지의 구간, t-P1부터 제 1 자원의 마지막 시점까지의 구간)에 설정된 보고-간 CMR / IMR은 단말이 이벤트 보고 정보 프로세싱에 이용하지 않을 수도 있다.

[0333] In this way, the CMR / IMR measurable in the time intervals distinguished by t, P (or t, P1, P2, ...) can be set as not only the inter-report CMR / IMR but also the general CMR / IMR.

[0334] The aforementioned P (or P1, P2, ...) values ​​can be set / indicated in a similar manner to the aforementioned examples for the T values ​​(e.g., per event, based on terminal capabilities, based on fixed values ​​or fixed rules, for multiple events).

[0335] Example 8

[0336] The values ​​of various timing parameters such as X, T, M, and / or P related to the aforementioned event-based (or terminal-initiated / triggered) reporting may be defined by counting only uplink time units (e.g., slots) in time division duplex (TDD). Alternatively, the values ​​of various timing parameters such as X, T, M, and / or P may be defined by counting without distinction between uplink time units and downlink time units (e.g., slots).

[0337] If the numerologies (e.g., subcarrier spacing, carrier frequency, etc.) in downlink and uplink are different, a specific CMR / IMR may be defined / configured based on the downlink numerology, and the first resource and the second resource on which the terminal's reporting can be performed may be defined / configured based on the uplink numerology. In this case, the values ​​of various timing parameters such as X, T, M, and / or P may be defined according to a specific (e.g., predefined / pre-configured) one of the uplink numerologies or the downlink numerologies.

[0338] If the first uplink numerology applied to the first resource and the second uplink numerology applied to the second resource may be different, in this case, values ​​of various timing parameters, such as X, T, M, and / or P, may be defined based on a specific (e.g., predefined / pre-configured) one of the first uplink numerology or the second uplink numerology.

[0339] Even in the new wireless communication system where time units of various lengths exist, such as flexible slot length, multi-slot merging, and mini-slot, the values ​​of timing parameters can be defined based on the corresponding time units according to the examples described above.

[0340] General devices to which the present disclosure may be applied

[0341] FIG. 20 illustrates a block diagram of a wireless communication device according to one embodiment of the present disclosure.

[0342] Referring to FIG. 20, the first device (100) and the second device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).

[0343] A first device (100) includes one or more processors (102) and one or more memories (104), and may additionally include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present disclosure.

[0344] For example, the processor (102) may process information in the memory (104) to generate first information / signal and then transmit a wireless signal including the first information / signal through the transceiver (106). In addition, the processor (102) may receive a wireless signal including second information / signal through the transceiver (106) and then store information obtained from signal processing of the second information / signal in the memory (104).

[0345] The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in the present disclosure. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, a device may also mean a communication modem / circuit / chip.

[0346] The second device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present disclosure. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present disclosure. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present disclosure, a device may also mean a communication modem / circuit / chip.

[0347] Hereinafter, the hardware elements of the device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in the present disclosure. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in the present disclosure. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed in the present disclosure, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in the present disclosure.

[0348] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this disclosure may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this disclosure may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and driven by one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this disclosure may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0349] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0350] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of the present disclosure, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of the present disclosure, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present disclosure, via one or more antennas (108, 208). In the present disclosure, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0351] The embodiments described above are combinations of components and features of the present disclosure in a predetermined form. Each component or feature should be considered optional unless explicitly stated otherwise. Each component or feature may be implemented without being combined with other components or features. Furthermore, it is also possible to form embodiments of the present disclosure by combining some components and / or features. The order of operations described in the embodiments of the present disclosure may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is self-evident that claims that do not have an explicit citation relationship in the patent claims may be combined to form embodiments or incorporated as new claims through post-application amendments.

[0352] It will be apparent to those skilled in the art that the present disclosure may be embodied in other specific forms without departing from the essential characteristics thereof. Therefore, the above detailed description should not be construed as limiting in any respect, but rather as illustrative. The scope of the present disclosure should be determined by a reasonable interpretation of the appended claims, and all modifications within the scope of equivalents of the present disclosure are intended to be included within the scope of the present disclosure.

[0353] The scope of the present disclosure includes software or machine-executable instructions (e.g., an operating system, an application, firmware, a program, etc.) that cause operations according to the methods of various embodiments to be executed on a device or a computer, and a non-transitory computer-readable medium having such software or instructions stored thereon and executable on the device or computer. Instructions that can be used to program a processing system to perform the features described in the present disclosure can be stored on / in a storage medium or a computer-readable storage medium, and a computer program product including such a storage medium can be used to implement the features described in the present disclosure. The storage medium can include, but is not limited to, high-speed random access memory, such as DRAM, SRAM, DDR RAM, or other random access solid state memory devices, and can include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. The memory optionally includes one or more storage devices remotely located from the processor(s). The memory or, alternatively, the non-volatile memory device(s) within the memory comprise a non-transitory computer-readable storage medium. The features described in this disclosure may be incorporated into software and / or firmware stored on any of the machine-readable media, which may control the hardware of the processing system and allow the processing system to interact with other mechanisms that utilize results according to embodiments of the present disclosure. Such software or firmware may include, but is not limited to, application code, device drivers, operating systems, and execution environments / containers.

[0354] Here, the wireless communication technology implemented in the device (100, 200) of the present disclosure may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the device (100, 200) of the present disclosure may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the device (100, 200) of the present disclosure can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0355] The method proposed in this disclosure is explained with a focus on examples applied to 3GPP LTE / LTE-A and 5G systems, but can be applied to various wireless communication systems in addition to 3GPP LTE / LTE-A and 5G systems.

Claims

1. A step of transmitting a first report initiated by the terminal to the network based on one or more events on the first resource; and A step of transmitting a second report to the network by the terminal on the second resource, A method wherein the second resource starts a predetermined number of time units after the reference time unit.

2. In paragraph 1, A method wherein the predetermined number is given based on X1, based on the reference time unit corresponding to the time unit at which the first resource ends, and the minimum value of X1 is T1.

3. In paragraph 2, A method wherein the predetermined number is given based on X2, wherein the minimum value of X2 is T2, based on the reference time unit corresponding to the time unit in which the resource for one or more of the channel measurement or interference measurement for the second report ends.

4. In paragraph 3, A method wherein the predetermined number is given based on X3, wherein the minimum value of X3 is T3, based on the above reference time unit corresponding to the time unit at which the window associated with the one or more events ends.

5. In paragraph 4, The above predetermined number is given based on one or more of the above X1, the above X2, or the above X3, and the method.

6. In paragraph 5, A method wherein the maximum value of the above X1 is M1, the maximum value of the above X2 is M2, and the maximum value of the above X3 is M3.

7. In paragraph 1, A method wherein terminal capabilities for one or more candidates for the minimum value of the predetermined number of time units are reported to the network, and a minimum value of the predetermined number of time units is set for the terminal based on the one or more candidates.

8. In paragraph 1, The minimum value of the above given number of time units is calculated by multiplying or dividing by a given scaling value for Z or Z', or by adding or subtracting a given offset value, The above Z is the length of time between the end of the last symbol of the downlink control information (DCI) or physical downlink control channel (PDCCH) that triggers the channel state information (CSI) report of the terminal and the start of the CSI report symbol, The above Z' is a method, wherein the length of time between the end of the last symbol of the latest time among the aperiodic channel state information-reference signal (CSI-RS) resource for channel measurement, the aperiodic CSI-IM (interference measurement) for interference measurement, and the aperiodic non-zero power (NZP) CSI-RS for interference measurement and the start of the CSI reporting symbol.

9. In paragraph 1, A method wherein the minimum value of the above predetermined number of time units is preset or predefined for each of the one or more events.

10. In paragraph 9, Based on the first minimum value of the predetermined number of time units being applied to the first event, and the second minimum value of the predetermined number of time units being applied to the second event, and the second report being transmitted for the first event and the second event, The above predetermined number of time units is greater than or equal to the sum of the first minimum value and the second minimum value, or A method wherein the number of time units is greater than or equal to the maximum of the first minimum value and the second minimum value.

11. In paragraph 1, A method wherein the second resource is scheduled based on control information provided from the network after the first report.

12. In paragraph 1, A method wherein the second resource corresponds to one of the candidate resources after the first report among the preset candidate resources.

13. In paragraph 12, The above candidate resources are configured periodically, semi-persistently, or based on configured grants.

14. In paragraph 1, The first uplink time unit of the second resource carrying the second report starts no earlier than a specific time unit, including timing advance, A method wherein the above specific time unit is defined as the next uplink time unit starting after a predetermined minimum value from the end of the last time unit of the above reference resource.

15. In paragraph 1, The above time unit corresponds to a symbol, a symbol group, a slot, or a slot group.

16. One or more transceivers; and comprising one or more processors connected to said one or more transceivers, One or more of the above processors: On the first resource, transmitting a first report initiated by the terminal based on one or more events to the network through the one or more transceivers; and A second report is set to be transmitted to the network via the one or more transceivers on the second resource, The second resource is a terminal that starts a predetermined number of time units after the reference time unit.

17. A step of receiving, by the base station, a first report initiated by the terminal based on one or more events on the first resource; and A step of receiving a second report from the terminal by the base station on the second resource, A method wherein the second resource starts a predetermined number of time units after the reference time unit.

18. One or more transmitters and receivers; and comprising one or more processors connected to said one or more transceivers, One or more of the above processors: On the first resource, receiving a first report initiated by the terminal based on one or more events from the terminal through the one or more transceivers; and A second report is set to be received from the terminal through the one or more transceivers on the second resource, The second resource is a base station that starts a predetermined number of time units after the reference time unit.

19. One or more processors; and A processing device comprising one or more computer memories operatively connected to said one or more processors and storing instructions for performing a method according to any one of claims 1 to 15 based on execution by said one or more processors.

20. One or more non-transitory computer-readable media storing one or more instructions that are executed by one or more processors to control the performance of a method according to any one of claims 1 to 15.

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