Method and device for performing uplink transmission and reception in wireless communication system

Abstract

A method and a device for performing uplink transmission and reception in a wireless communication system are disclosed. A method according to an embodiment of the present disclosure may comprise the steps of: receiving configuration information related to at least one of a first resource and a second resource from a base station by a terminal; on the basis of the occurrence of an event related to a transmission procedure, transmitting first information to the base station by the terminal on the basis of the first resource; and transmitting second information to the base station by the terminal on the basis of the first information and the second resource, wherein the first information includes at least one of: i) third information related to whether the event has occurred; and ii) fourth information related to at least one of the second resource and the second information, and a minimum interval between a first TO for the first information and a second TO for the second information is a first time interval.

Description

Method and device for performing uplink transmission and reception in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and more particularly, to a method and device for performing uplink transmission and reception 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 method and device for performing uplink transmission and reception in a wireless communication system.

[0005] In addition, an additional technical challenge of the present disclosure is to provide a method and device for performing a two-step event-based transmission / reception and reporting procedure.

[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 can 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 comprises the steps of: receiving, by a terminal, from a base station, configuration information related to at least one of a first resource or a second resource; transmitting, by the terminal, first information to the base station based on the first resource based on occurrence of an event; and transmitting, by the terminal, second information to the base station based on the first information and the second resource, wherein the first information comprises at least one of i) third information related to whether the event has occurred or ii) fourth information related to at least one of the second resource or the second information, and a minimum interval between a first transmission occasion (TO) for the first information and a second TO for the second information may be a first time interval.

[0008] A method according to one embodiment of the present disclosure comprises the steps of: transmitting, by a base station, configuration information related to at least one of a first resource or a second resource to a terminal; receiving, by the base station, first information from the terminal based on the first resource based on occurrence of an event; and receiving, by the base station, second information from the terminal based on the first information and the second resource, wherein the first information comprises at least one of i) third information related to whether the event has occurred or ii) fourth information related to at least one of the second resource or the second information, and a minimum interval between a first transmission occasion (TO) for the first information and a second TO for the second information may be a first time interval.

[0009] According to various embodiments of the present disclosure, a method and apparatus for performing uplink transmission and reception in a wireless communication system can be provided.

[0010] Additionally, various embodiments of the present disclosure may provide a method and apparatus for performing a two-step event-based transmission / reception and reporting procedure.

[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 flowchart illustrating a method for a terminal to perform a communication procedure according to an embodiment of the present disclosure.

[0020] FIG. 8 is a flowchart illustrating a method for a base station to perform a communication procedure according to an embodiment of the present disclosure.

[0021] FIG. 9 is a diagram for explaining a signaling process according to one embodiment of the present disclosure.

[0022] FIG. 10 is a block diagram illustrating a wireless communication device according to one embodiment of the present disclosure.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The present disclosure describes a wireless communication network or a wireless communication system, and operations performed in the 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 in a process of transmitting or receiving a signal to or between terminals connected to the wireless network.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] For clarity, the description is based on the 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.

[0033] 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).

[0034] 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).

[0035] Abbreviations for terms that may be used in this disclosure are defined as follows.

[0036] - BM: beam management

[0037] - CQI: Channel Quality Indicator

[0038] - CRI: Channel state information - reference signal resource indicator

[0039] - CSI: Channel State Information

[0040] - CSI-IM: Channel State Information - Interference Measurement

[0041] - CSI-RS: Channel state information - reference signal

[0042] - DMRS: Demodulation Reference Signal

[0043] - FDM: frequency division multiplexing

[0044] - FFT: fast Fourier transform

[0045] - IFDMA: interleaved frequency division multiple access

[0046] - IFFT: inverse fast Fourier transform

[0047] - L1-RSRP: Layer 1 reference signal received power

[0048] - L1-RSRQ: Layer 1 reference signal received quality

[0049] - MAC: Medium Access Control

[0050] - NZP: non-zero power

[0051] - OFDM: orthogonal frequency division multiplexing

[0052] - PDCCH: Physical downlink control channel

[0053] - PDSCH: Physical downlink shared channel

[0054] - PMI: precoding matrix indicator

[0055] - RE: resource element

[0056] - RI: Rank indicator

[0057] - RRC: Radio Resource Control

[0058] - RSSI: Received signal strength indicator

[0059] - Rx: Reception

[0060] - QCL: quasi co-location

[0061] - SINR: signal to interference and noise ratio

[0062] - SSB (or SS / PBCH block): Synchronization signal block (including primary synchronization signal (PSS), secondary synchronization signal (SSS), and physical broadcast channel (PBCH))

[0063] - TDM: Time Division Multiplexing

[0064] - TRP: transmission and reception point

[0065] - TRS: Tracking Reference Signal

[0066] - Tx: transmission

[0067] - UE: user equipment

[0068] - ZP: Zero Power

[0069] System General

[0070] 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 communication (eMBB), massive MTC (MMTC), and ultra-reliable and low latency communication (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.

[0071] 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.

[0072] 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.

[0073] Figure 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.

[0074] 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.

[0075] FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.

[0076] 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.

[0077] 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.

[0078] μΔf=2 μ ·15 [kHz]CP015 Normal 130 Normal 260 Normal, Extended 3120 Normal 4240 Normal

[0079] 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).

[0080] Frequency Range Designation Corresponding Frequency Range Subcarrier Spacing FR1410MHz - 7125MHz 15, 30, 60kHz FR224250MHz - 52600MHz 60, 120, 240kHz

[0081] 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 must 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.

[0082] 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.

[0083] μN symb slot N slot frame,μ N slot subframe,μ01410111420221440431480841416016

[0084] μN symb slot N slot frame,μ N slot subframe,μ212404

[0085] 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.

[0086] 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.

[0087] Fig. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied. Referring to Fig. 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 RB max,μ is. The above NRB max,μ represents the maximum transmission bandwidth, which may vary not only between numerologies but also between uplink and downlink. In this case, one resource grid may be configured 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').

[0088] Here, 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.

[0089] Point A serves as a common reference point of the resource block grid and is obtained as follows.

[0090] - 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.

[0091] - absoluteFrequencyPointA represents the frequency-position of point A expressed as ARFCN (absolute radio-frequency channel number).

[0092] Common resource blocks (CRBs) are numbered from 0 upwards in the frequency domain for a subcarrier spacing setting μ. The center of subcarrier 0 of CRB 0 for a 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.

[0093]

[0094] 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.

[0095]

[0096] N BWP,i start,μ is a common resource block where BWP starts relative to common resource block 0.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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).

[0101] Meanwhile, a base station can configure multiple BWPs even 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.

[0102] 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.

[0103] 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. However, since the UE may not receive the configuration for the DL / UL BWP when performing the initial access process or before the RRC connection is set up, the DL / UL BWP assumed by the UE in such a situation is defined as the initially active DL / UL BWP.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] A terminal that has completed an 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).

[0108] 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 random access channel (RACH) (steps S603 and S605) and receive a response message to the preamble via the PDCCH and the corresponding PDSCH (steps S604 and S606). In the case of a contention-based RACH, a contention resolution procedure may additionally be performed.

[0109] 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.

[0110] 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.

[0111] Table 5 shows an example of the DCI format in the NR system.

[0112] 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

[0113] 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 control information included in each DCI format may be predefined.

[0114] DCI format 0_0 is used for scheduling PUSCH in a cell. The information included in DCI format 0_0 is transmitted after being CRC (cyclic redundancy check) scrambled by the cell radio network temporary identifier (C-RNTI), the configured scheduling RNTI (CS-RNTI), or the modulation coding scheme cell RNTI (MCS-C-RNTI). DCI format 0_1 ​​is used to schedule one or more PUSCHs in a cell, or to indicate configured grant (CG) downlink feedback information to a UE. The information included in DCI format 0_1 ​​is transmitted after being CRC scrambled by the C-RNTI, the CS-RNTI, the semi-persistent CSI RNTI (SP-CSI-RNTI), or the MCS-C-RNTI. DCI format 0_2 is used for scheduling PUSCH in a cell. Information included in DCI format 0_2 is transmitted CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI, or MCS-C-RNTI.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] Basic beam failure recovery (BFR)

[0120] The terminal and / or base station may perform uplink / downlink beam management (BM) for data transmission and reception. Here, BM may refer to the process of acquiring and maintaining a beam set that can be used for downlink and uplink transmission / reception.

[0121] Specifically, the BM may include a beam measurement process for measuring the characteristics of a beam forming signal received from a base station or a terminal, a beam determination process for determining a transmission beam (Tx beam) and a reception beam (Rx beam) of the base station or the terminal itself, a beam sweeping process for covering a spatial area using the transmission beam and / or the reception beam for a predetermined time interval in a predetermined manner, and a beam reporting process for the terminal to report information on the beam signal to the base station based on the beam measurement result.

[0122] During the above-described uplink / downlink beam matching (BM) process, beam mismatch issues may arise due to various factors. For example, if the terminal moves or rotates, or if the wireless channel environment changes due to the movement of surrounding objects (e.g., if the environment changes from a line-of-sight (LoS) environment to a non-LoS environment due to a beam block), the optimal uplink / downlink beam pair may change. In this case, if the terminal or base station fails to track the changed optimal uplink / downlink beam pair (i.e., BM tracking), it can be considered that a beam failure has occurred.

[0123] The terminal can determine whether a beam failure has occurred based on the reception quality of the downlink reference signal (RS). The terminal must then report a beam failure occurrence report message or a beam failure recovery request message (BFRQ) to the base station. Upon receiving the message, the base station can perform a beam recovery process through various processes, such as beam RS transmission or a beam report request. This series of beam recovery processes is called the beam failure recovery (BFR) process.

[0124] The basic BFR operation includes a BFR process for a special cell (SpCell) (i.e., a primary cell (PCell) or a primary secondary cell (PScell)) in which contention-based PRACH resources exist. The BFR process consists of a UE beam failure detection (BFD) process, a BFRQ transmission process, and a process for monitoring a base station's response to the BFRQ, and each process can be performed within a serving cell.

[0125] Beam failure detection (BFD)

[0126] If the quality value (Q_out) of all PDCCH beams falls below a predefined value, it can be considered that a beam failure instance has occurred. Here, the quality value can be determined based on the theoretical BLER (block error rate). In other words, the theoretical BLER can mean the probability that demodulation of control information will fail when the control information is transmitted through a specific PDCCH.

[0127] In addition, one or more search spaces for monitoring PDCCHs can be set for the terminal, and different PDCCH beams can be set for each search space. In this case, the quality values ​​of all PDCCH beams falling below a predefined value means that the quality values ​​of all PDCCH beams fall below the BLER threshold.

[0128] Two methods described below can be supported in which the terminal receives instructions / configuration from the base station for BFD-RS to determine whether a beam failure instance has occurred.

[0129] In the first method, an implicit configuration method of BFD-RS can be supported. A control resource set (CORESET) ID, which is a resource region in which a PDCCH can be transmitted, is set for each search space, and RS information (e.g., CSI-RS resource ID, SSB ID) that is QCLed from a spatial RX parameter perspective can be indicated / set for each CORESET ID. The RS that is QCLed from a spatial RX parameter perspective can be indicated or set through transmit configuration information (TCI). That is, BFD-RS can be implicitly set / instructed to a terminal based on the QCL information indicated or set through TCI.

[0130] Here, when the base station instructs or configures the terminal to use an RS that is QCLed in terms of spatial reception parameters (i.e., QCL Type D RS), the terminal can use the beam used for reception of the RS that is QCLed in terms of spatial reception parameters when receiving a specific PDCCH DMRS. That is, signals can be transmitted between spatially QCLed antenna ports through the same transmission beam or similar transmission beams (e.g., beam directions are the same / similar but beam widths are different).

[0131] Second, explicit configuration of BFD-RS can be supported. The base station can explicitly configure or instruct the terminal to configure or instruct the beam RS for BFD purposes. In this case, the beam RS may correspond to the aforementioned "all PDCCH beams."

[0132] The terminal physical layer can notify the MAC sublayer that a beam failure instance (BFI) has occurred whenever an event occurs in which the theoretical BLER measured based on the configured (or indicated) BFD-RS degrades beyond a certain threshold. In addition, the terminal MAC sublayer can determine that a beam failure has occurred and initiate a related RACH operation if the BFI occurs a certain number of times (e.g., 'beamFailureInstanceMaxCount') within a certain time (e.g., 'BFD timer').

[0133] BFRQ (PRACH-based): New beam identification and PRACH transmission

[0134] As described above, if a certain number of BFIs occur, the terminal may determine that a beam failure has occurred and perform a beam failure recovery operation. As an example of a beam failure recovery operation, the terminal may perform a beam failure recovery procedure based on the RACH (i.e., PRACH). The BFRQ procedure will be described in detail below.

[0135] The base station can set a candidate beam RS list ('candidateBeamRSList') including candidate beam RSs that can be replaced when a beam failure occurs, to the terminal through RRC signaling. Then, the base station can set a dedicated PRACH resource for the candidate beam RSs. At this time, the dedicated PRACH resource can be a non-contention based PRACH resource (or, contention free PRACH resource). If a replacement beam RS is not found in the candidate beam RS list, the terminal can select at least one of the preset SSB resources. Then, the terminal can transmit a contention-based PRACH to the base station based on at least one of the selected beam RSs.

[0136] Improved beam failure recovery

[0137] When carrier aggregation (CA) is applied, a specific SCell may not have an uplink carrier (UL carrier). That is, uplink transmission is not possible for an SCell with only a downlink carrier. Furthermore, even if an SCell has an uplink carrier, a collision-based PRACH cannot be established. Therefore, the PRACH-based BFR process with CA applied can only be applied to SpCells (PCells or PSCells), and BFR may not be supported on SCells. In other words, according to basic BFR operations, PRACH-based BFR operations on SpCells may not be supported on SCells.

[0138] Specifically, if a high-frequency band requiring BFR is configured as an SCell, PRACH-based BFR procedures may not be supported in that high-frequency band. For example, if a PCell is operated in a low-frequency band (e.g., 6 GHz or lower) while an SCell is operated in a high-frequency band (e.g., 30 GHz), the PRACH-based BFR procedure may not be supported in the high-frequency band where BFR support is more necessary.

[0139] To address the aforementioned issues, the improved BFR operation includes operations for BFR of the SCell. For example, a terminal can perform BFRQ for the SCell using dedicated PUCCH resources configured for BFRQ in the SpCell. For convenience, the "dedicated PUCCH resources" will hereinafter be referred to as BFR-PUCCH.

[0140] The role of the above BFR-PUCCH is to report only "BF occurrence information for SCells" to the base station. Further details regarding the BF occurrence can be transmitted to the base station as a follow-up report via the BFR MAC-CE or UCI.

[0141] Here, the detailed information transmitted as the follow-up report may include information about the SCell(s) where the BF occurred (e.g., CC (component carrier) index information), whether a new candidate beam exists for the SCell(s) where the BF occurred, and, if a new candidate beam exists, the corresponding beam RS ID.

[0142] In addition, the BFR-PUCCH uses the same PUCCH format as the SR (scheduling request) and can be defined through the ID of a specific SR for BFR purposes. If the UL-SCH allocated from the base station exists when the terminal detects a BF for the SCell, the terminal can skip the BFR-PUCCH transmission procedure, similar to the SR transmission procedure, and directly transmit the BFR MAC-CE to the base station through the allocated UL-SCH.

[0143] In a multi-TRP environment, multi-DCI and / or single-DCI based TRP-specific BFR operations can be applied. First, the base station can explicitly or implicitly configure BFD RS for the terminal. For example, the base station can configure two or more BFD-RS sets for the terminal via RRC and / or MAC-CE. In another example, the BFD-RS sets can be configured based on the TCI status of each CORESET pool. The terminal can determine whether a beam fails for each TRP based on the BFD-RS sets described above.

[0144] When a beam failure is detected, SR PUCCH resources can be set for the UE according to the BFRQ resources of the base station. Separate SR PUCCH resources can be set for each TRP, or the same SR PUCCH resource can be used by two TRPs. When a beam failure occurs in a specific TRP, the UE can transmit the set BFRQ SR PUCCH (to a TRP where the beam failure did not occur). The TRP that receives the BFRQ can transmit a UL grant DCI to the UE, and the UE can transmit a BFR MAC-CE through the PUSCH scheduled / allocated by the UL grant DCI. The BFR MAC-CE can include a list of CCs where a beam failure occurred, information about the failed BFD RS set, and information about whether a new beam has been generated.

[0145] PUCCH configuration and format

[0146] PUCCH can carry uplink control information (UCI). UCI can include SR, HARQ-ACK, CSI, etc. SR can be used to request UL-SCH resources. HARQ-ACK is a reception response signal for a DL signal. HARQ-ACK response can include ACK, NACK (negative acknowledgment), DTX (discontinuous transmission), NACK / DTX. HARQ-ACK can be used interchangeably with A / N, ACK / NACK, and HARQ-ACK / NACK. HARQ-ACK can be generated on a TB basis or a CBG basis.

[0147] PUCCH formats can be distinguished based on UCI payload size, transmission length (e.g., the number of symbols constituting a PUCCH resource), and transmission structure. PUCCH formats can be classified into short PUCCH (formats 0 and 2) and long PUCCH (formats 1, 3, and 4) based on transmission length.

[0148] For example, when the PUCCH format is 0, the supportable UCI payload size is at most 2 bits, and the number of OFDM symbols constituting a single PUCCH may be 1 to 2. As another example, when the PUCCH format is 2, the supportable UCI payload size is greater than 2 bits, and the number of OFDM symbols constituting a single PUCCH may be 1 to 2.

[0149] As another example, when the PUCCH format is 1, the supportable UCI payload size is at most 2 bits, and the number of OFDM symbols constituting a single PUCCH may be 4 to 14. As another example, when the PUCCH format is 3 or 4, the supportable UCI payload size is greater than 2 bits, and the number of OFDM symbols constituting a single PUCCH may be 4 to 14.

[0150] Two-step uplink transmission scheme for event-based transmission

[0151] In describing the present disclosure, " / " means "and", "or", or "and / or" depending on the context. In addition, "beam" in the present disclosure may mean a source RS for a "spatial filter" or a "spatial relationship", and may be interpreted as a QCL (type-D) RS, a (DL / UL / joint) TCI state, or (in the case of uplink) a spatial relationship RS.

[0152] In wireless communication systems, Layer-1 (e.g., physical layer)-based uplink control information has the advantage of shorter transmission delay compared to higher-layer-based control information. For example, when a terminal transmits information to a base station via a MAC-CE or RRC message, the terminal may require an SR procedure and the base station's PUSCH allocation procedure (based on the SR), resulting in delay and overhead. Furthermore, higher-layer information generally requires longer decoding time (e.g., decoding time and / or processing time).

[0153]

[0154] On the other hand, in order to transmit layer-1 based uplink control information, UL physical channel resources (e.g., PUCCH, PUSCH) must be (preliminarily) set / allocated to the corresponding terminal. Therefore, from the base station / network's perspective, as the number of terminals increases, the amount of UL resources to be allocated to each terminal may increase, and the overall UL resource overhead burden may increase accordingly.

[0155] Accordingly, in a wireless communication system, information that must be transmitted relatively urgently for the operation of the physical layer, etc. (e.g., SR (e.g., SR for PUSCH allocation), HARQ-ACK (e.g., HARQ-ACK for retransmission), CSI (e.g., CSI for scheduling / MCS / precoder decision), beam information (e.g., beam information for (analog) beam decision) can be transmitted and received as physical layer UCI.

[0156] Here, the base station and / or the network can determine / control the reporting timing of HARQ-ACK, CSI, beam information, etc., excluding SR. If this NW (network)-initiated / triggered reporting procedure is applied, there is a limitation that in an environment where the wireless channel condition is likely to change rapidly / highly, the reporting timing must be set / instructed so that the terminal can transmit UCI frequently.

[0157] That is, in an environment where the wireless channel conditions change rapidly, the UL resource overhead for UCI reporting and the related DL measurement RS overhead may increase, and there may also be a problem that the power consumption of the terminal increases due to the frequent UL transmission of the terminal. Additionally or alternatively, the UL resource overhead may increase as the number of terminals within the cell / TRP coverage increases, as each terminal must be allocated UL resources.

[0158] To overcome the limitations of these NW-initiated / triggered reports, UE-initiated / triggered reporting schemes or event-based / triggered reporting schemes may be applied.

[0159] When UE-initiated / triggered reporting or event-based / triggered reporting is applied, the terminal can determine whether and when to report (e.g., UCI). That is, the terminal can perform the (UCI) reporting only when necessary (e.g., only when a specific event occurs). This can reduce UL resource overhead and terminal power consumption. Furthermore, since the terminal reports information based on Layer 1 / lower layers, faster reporting can be achieved.

[0160] Accordingly, standardization of UE-initiated / triggered beam reporting methods may be pursued in next-generation wireless communication systems.

[0161] Additionally, for efficient operation of UL resources in next-generation wireless communication systems, UE-initiated / triggered or event-based transmission schemes may be specifically applied to control information, transport blocks (TBs), and user-plane data transmission procedures transmitted via UCI and / or MAC-CE.

[0162] The present disclosure relates to a method for more efficiently reporting "occurrence of an event and / or reporting information related to the event" in a UE-initiated / triggered reporting scheme or an event-based / triggered reporting scheme.

[0163] At the physical layer of a wireless communication system, the SR / BFRQ transmission procedure via the dedicated PUCCH / PRACH described above can be performed in an event-driven or UE-initiated / triggered reporting manner. When the aforementioned method is applied, to minimize the amount of UL resources (e.g., PUCCH / PRACH) pre-allocated to each UE, only a small amount of information (e.g., whether an event has occurred) can be transmitted based on the resources when an event occurs.

[0164] For example, a PRACH-based transmission procedure may be used when the occurrence of the event may cause a problem in UL synchronization, and a PUCCH-based transmission procedure may be used in other cases. Here, a format (e.g., PUCCH format 0 / 1) that allows transmission of a small amount of information (e.g., a small number of bits) based on relatively small UL resources in the format of PUCCH (e.g., SR PUCCH, BFRQ PUCCH) may be used.

[0165] When a terminal has a large amount of information to transmit, such as in the BFR procedure, or when there is additional information to transmit, a PUSCH (resource) allocation procedure may be performed after the SR / BFRQ to enable the network to transmit the information to support the procedure. For example, the reporting procedure may proceed according to the three steps described below:

[0166] 1) The action of the terminal reporting the first information (e.g., information indicating that an event has occurred) to the network through the pre-allocated / configured UL resources.

[0167] 2) The network allocates PUSCH resources to the terminal.

[0168] 3) An operation in which a terminal reports secondary information (e.g., BFR MAC-CE for BFR procedure) to the network through a PUSCH allocated by the network.

[0169] Meanwhile, if the above procedure is applied to network-initiated / triggered periodic, aperiodic, and semi-persistent (SP) reporting procedures such as existing CSI / beam reporting, the problems described below may arise.

[0170] For example, if multiple events occur simultaneously for multiple terminals and / or uplink traffic demand is high, the PUSCH allocation procedure (i.e., operation 2) described above) may be delayed. Consequently, the time required for the terminal to finally report information may be delayed.

[0171] As another example, it may take a time of "T1+T2+T3" after the terminal transmits the first information before transmitting the second information, where T1, T2, and T3 are as follows:

[0172] - T1: The time it takes for the base station / NW to successfully complete detection and decoding of the first information.

[0173] - T2: Internal processing time of the base station for PUSCH resource allocation decision for the terminal (e.g., scheduling decision)

[0174] - T3: The time taken for a UL grant to be transmitted to a terminal (e.g., via PDCCH) and for the terminal to successfully complete detection / decoding of the UL grant.

[0175] In the following, a two-step uplink transmission method for event-based transmission is described to solve the above-described problems.

[0176] FIG. 7 is a flowchart illustrating a method for a terminal to perform a communication procedure according to an embodiment of the present disclosure.

[0177] The terminal can receive configuration information related to at least one of the first resource or the second resource from the base station (S710).

[0178] As an example of the present disclosure, first configuration information related to a first resource and second configuration information related to a second resource may be included in a single configuration information, but is not limited thereto. The first configuration information and the second configuration information may be transmitted to the terminal separately. The configuration information may be transmitted to the terminal via higher layer signaling (e.g., RRC message, MAC-CE, etc.), but is not limited thereto.

[0179] Here, the allocation cycle of the first resource and the allocation cycle of the second resource may be the same, but are not limited thereto.

[0180] As an example of the present disclosure, configuration information may include configuration information related to an event. The configuration information related to the event may also be included in the same configuration information as the first / second configuration information, but is not limited thereto. The configuration information related to the event may include conditions / criteria related to the occurrence of the event, the type of event, information regarding the terminal's operation upon the occurrence of the event, and the like. The terminal may monitor whether an event occurs based on the configuration information related to the event.

[0181] Based on the occurrence of an event, the terminal can transmit first information to the base station based on the first resource (S720).

[0182] Here, the event type may be an event related to a transmission procedure. The transmission procedure may include a beam (failure) report, an uplink and / or downlink transmission procedure, etc. For example, if the transmission procedure is a beam report, the event related to the transmission procedure may include an event related to a beam failure. However, this is merely an example, and the event type may be set differently depending on the configuration information.

[0183] For example, the first information may include at least one of: i) third information related to whether an event occurred or ii) fourth information related to at least one of the second resource or the second information.

[0184] For example, the third information may include information about an event and / or information indicating a second resource or / and channel (e.g., a channel based on the second resource) that includes the second information.

[0185] For example, the fourth information may include terminal selection / decision information related to the second resource and / or information about the amount, type, and configuration of the second information (e.g., information related to fields of the second information, etc.). For example, the configuration information may include information about at least one resource candidate (e.g., a candidate for the first resource and / or the second resource, etc.). The terminal may select the second resource from among the at least one resource candidate, and the fourth information may include an index of the second resource.

[0186] Additionally or alternatively, the fourth information may include at least one of spatial filter information, location, length, format, sequence, or transmission method related to the second resource determined / selected by the terminal.

[0187] The first resource may include at least one time resource, a frequency resource, and a spatial resource. The terminal may repeatedly transmit the first information to the base station based on at least one of the time resources, the frequency resource, and the spatial resource. For example, if at least one of the time resources is spaced apart from each other, the terminal may repeatedly transmit the first information to the base station on at least one of the spaced time resources.

[0188] As another example, a first plurality of spatial parameters (e.g., beams, spatial relationship information, spatial filters, etc.) may be set for the first information. The terminal may transmit the first information to the base station based on the first plurality of spatial parameters at the same time or frequency.

[0189] As an example of the present disclosure, retransmission of the first information may be restricted for a certain period of time after the terminal transmits the first information. For example, if the terminal transmits the first information in the first transmission occasion (TO), retransmission of the first information may be restricted for a second period of time after the first TO (transmission occasion).

[0190] As an example of the present disclosure, a terminal may receive ACK information for first information from a base station. Here, the ACK information may be included in control information that activates at least one of a second resource or second information. If ACK information for the first information is received from the base station, the terminal may transmit the second information. If ACK information for the first information is not received from the base station, the terminal may perform a retransmission of the first information.

[0191] The terminal can transmit second information to the base station based on the first information and the second resource (S730).

[0192] Here, the (minimum) interval (e.g., time gap) between the first TO for the first information and the second TO for the second information may be a first time interval. The first time interval may be predefined or may be set or indicated by the base station. For example, the first time interval may be included in the configuration information or may be included in separate control information transmitted by the base station. As another example, the terminal may determine the first time interval, and the first information may include information about the first time interval determined by the terminal. The first time interval may be determined as an absolute time value, but may also be determined as relative time information (e.g., x symbols / slots, etc.) (where x is a natural number greater than or equal to 1).

[0193] The second resource may include at least one time resource, a frequency resource, and a spatial resource. The terminal may repeatedly transmit the second information to the base station based on at least one of the time resources, the frequency resource, and the spatial resource. For example, if at least one of the time resources is spaced apart from each other, the terminal may repeatedly transmit the second information to the base station on at least one of the spaced time resources.

[0194] As another example, a second plurality of spatial parameters (e.g., beams, spatial relationship information, spatial filters, etc.) may be set for the second information. The terminal may transmit the second information to the base station based on the second plurality of spatial parameters at the same time or frequency.

[0195] As an example of the present disclosure, retransmission of second information may be restricted for a certain period of time after the terminal transmits second information. For example, if the terminal transmits second information in a second TO, retransmission of first information may be restricted for a third period of time after the second TO.

[0196] Each of the first information and the second information may be transmitted to the base station via an uplink channel (e.g., PUCCH, etc.) or an uplink data channel (e.g., PUSCH, etc.). Each of the first information and the second information may be included in separate uplink control information, but is not limited thereto.

[0197] The method described in the example of FIG. 7 can be performed by the first device (100) of FIG. 10. For example, one or more processors (102) of the first device (100) of FIG. 10 can receive configuration information related to at least one of the first resource or the second resource from the base station through one or more transceivers (106). Based on the occurrence of an event related to the transmission procedure, the one or more processors (102) can transmit first information to the base station through one or more transceivers (106) based on the first resource. The one or more processors (102) can transmit second information to the base station through one or more transceivers (106) based on the first information and the second resource.

[0198] Furthermore, one or more memories (104) of the first device (100) may store commands for performing the method described in the example of FIG. 7 or the examples described below when executed by one or more processors (102).

[0199] FIG. 8 is a flowchart illustrating a method for a base station to perform a communication procedure according to an embodiment of the present disclosure.

[0200] The base station can transmit configuration information related to at least one of the first resource or the second resource to the terminal (S810).

[0201] For example, the base station may set the allocation cycles of the first resource and the second resource to the same value, but is not limited thereto.

[0202] Based on the occurrence of an event, the base station can receive first information from the terminal based on the first resource (S820).

[0203] The configuration of the first information and the first resource has been described above, so a redundant description will be omitted. The base station can efficiently identify whether an event has occurred and the second information / second resource to be transmitted by the terminal through the first information.

[0204] The base station can receive second information from the terminal based on the first information and the second resource (S830).

[0205] The method described in the example of FIG. 8 can be performed by the second device (200) of FIG. 10. For example, one or more processors (202) of the second device (200) of FIG. 10 can transmit configuration information related to at least one of the first resource or the second resource to the terminal via one or more transceivers (206). Based on the occurrence of an event related to the transmission procedure, the one or more processors (202) can receive first information from the terminal via one or more transceivers (206) based on the first resource. The one or more processors (202) can receive second information from the terminal via one or more transceivers (206) based on the first information and the second resource.

[0206] Furthermore, one or more memories (204) of the second device (200) may store instructions for performing the method described in the example of FIG. 8 or the examples described below when executed by one or more processors (202).

[0207] Below, we will describe in more detail the two-step uplink transmission method for event-based transmission.

[0208] Example 1

[0209] Embodiment 1 relates to a two-step uplink transmission procedure for event-based transmission and a configuration of information allocated and / or transmitted in the two-step uplink transmission procedure.

[0210] As an example of the present disclosure, a base station may (periodically) allocate / configure two uplink resources, a first resource and a second resource, in a TDM format to a terminal over a predetermined time interval. Here, the cycles associated with each of the first and second resources (e.g., the cycle for allocating / configuring the first and / or second resources, the validity cycle of the first and / or second resources, etc.) may be the same, but are not limited thereto, and may also be different from each other.

[0211] The terminal may transmit first information to the base station based on a first resource, and second information to the base station based on a second resource. Here, the first information may include at least one of information regarding the occurrence of an event or whether a second resource / second information is transmitted. Here, the first information may be determined based on whether the first resource is transmitted and / or information transmitted via the first resource. Whether the second resource / second information is transmitted may be determined based on the first information.

[0212] Specifically, the first information can be configured / set via a transmission bit transmitted via the first resource.

[0213] Additionally or alternatively, the first information may include information that is (implicitly) transmitted / determined by the terminal's selection / decision / transmission of the configured first resource (or candidate for the first resource). For example, if the base station sets the first resource to be transmitted when an event occurs and the first resource to be transmitted when an event does not occur to the terminal, the base station can determine whether an event has occurred in the terminal based on the first resource / first information transmitted by the terminal. As another example, if the base station sets only the first resource to be transmitted when an event occurs in the terminal, the base station can determine whether an event has occurred in the terminal based on whether the terminal has transmitted the first resource / first information.

[0214] As an example of the present disclosure, the first resource may be configured as a resource containing / configuring / mapped with a relatively small amount of information (e.g., 1 to 2 bits, etc.). For example, the first resource may include a sequence resource (e.g., a DM-RS sequence, a ZC sequence, etc.) and / or an RS resource (e.g., an SRS resource, NR PUCCH format 0, etc.).

[0215] For example, by configuring / instructing the transmission on / off of one sequence / RS through the first resource, the base station can determine whether the second resource is in use. As another example, if two sequences / RSs are allocated / configured through the first resource, sequence / RS 1 can indicate that the second resource is in use, and sequence / RS 2 can indicate that the second resource is not in use.

[0216] As another example of the present disclosure, the first resource may include a PRACH preamble. For example, by configuring / instructing the on / off of transmission of one PRACH preamble through the first resource, the base station can determine whether the second resource is in use.

[0217] In another example of the present disclosure, the use of a second resource can be indicated based on transmissions to specific RE(s). For example, whether the terminal transmits power / energy to the RE(s) designated as the first resource can be notified to the base station of the use of the second resource. The base station can receive the first information by detecting energy for the RE(s). For example, if energy is detected in the RE(s), the base station can determine that the second resource is being used. Furthermore, if energy is not detected in the RE(s), the base station can determine that the second resource is not being used. The opposite case can also be applied / utilized.

[0218] As another example of the present disclosure, the terminal may modulate (e.g., BPSK, QPSK, QAM) information bit(s) (e.g., bits of first information / first resource, etc.), apply sequence modulation that multiplies a specific sequence and / or code thereto, and then transmit the same to the base station (together with DMRS). As an example, the terminal may transmit the resource / information to which the sequence modulation that multiplies a specific sequence and / or code thereto is applied to the base station via NR PUCCH format 1, but is not limited thereto.

[0219] As another example of the present disclosure, a terminal may perform channel coding and modulation on information bit(s) and transmit them to a base station along with a DMRS. In this case, the information bit(s) for which channel coding and modulation have been performed may be transmitted to the base station via NR PUCCH format 2, 3, 4, or PUSCH, but is not limited thereto.

[0220] Meanwhile, from a network / base station perspective, if multiple terminals simultaneously transmit the first resource, resulting in collisions / interference, the reception quality of the first resource / first information may deteriorate. To prevent this, when allocating the first resource to multiple terminals, the base station may allocate different quasi-orthogonal resources to each terminal.

[0221] The second resource may include resources capable of transmitting a greater amount of information than the first resource (when transmitting information through the resource). Additionally or alternatively, the second resource may include resources that occupy / include more time, frequency, sequence, code, or space (e.g., layers, ports, etc.) resources than the first resource. For example, the second resource may include a PUCCH (e.g., NR PUCCH format 2, 3, 4) resource or a PUSCH resource capable of transmitting more than two bits of information.

[0222] Information transmitted via the second resource may include physical layer control information (e.g., UCI) or upper layer control information (e.g., MAC-CE, RRC, etc.). Additionally or alternatively, the second resource may include (urgent / important) user plane data (e.g., TB). In this case, the first resource may include information related to whether the second resource transmits data. Here, the event may include a data / TB transmission event (via the second resource).

[0223] As an example of the present disclosure, the second resource may be a resource transmitted / set at a predetermined time interval (e.g., one or more slots) apart from the first resource. Depending on whether the first resource is transmitted or the reporting information transmitted from the first resource, the base station may allocate the second resource (e.g., a portion of the second resource) or the time, frequency, space (e.g., layer, port, etc.) and resource location occupied by the resource to another terminal. The first and second resources may be separated from each other by a predetermined time interval.

[0224] The above-described time interval may be, but is not limited to, a predefined value (e.g., a standardized value). The time interval between the first resource and the second resource may be set by the base station or determined / selected by the terminal. Furthermore, the above-described time interval may be an absolute time (e.g., time in milliseconds, etc.) or a relative time (e.g., time in slots / symbols, etc.) that may vary depending on the SCS and DL / UL configuration.

[0225] If the time gap between the first resource and the second resource is set / indicated / defined as a relative time, the gap between the first resource and the second resource may not be constant depending on the DL and UL slot / sub-frame configuration in the TDD system. For example, assume that the first resource and the second resource are set to have a 1 slot gap, and the DL / UL are set as "DUDUUUDDUU". In this case, the slot positions of the first resource and the second resource are each set as U 1 and U 2 When written as "DU 1 DUU 2 U1DDUU 2 " The resource intervals of the first first resource-second resource pair and the second first resource-second resource pair may be different from each other by 2 slots and 3 slots, respectively.

[0226] When a terminal determines / selects a time interval, the range / candidate values ​​that the terminal can determine may be set by the base station or defined in advance (by standard). The terminal may include the determined / selected time interval value in the first information and transmit the first information to the base station based on the first resource.

[0227] Even if the secondary resource is not allocated to each terminal in a (quasi-)orthogonal resource format, the secondary resource can be a resource capable of resolving conflicts between multiple terminals within a given period of time after receiving the primary resource / primary information from the network / base station perspective. Secondary resources in the same location can be allocated to multiple terminals, thereby minimizing the system overhead of the secondary resource.

[0228] Examples of the first and second resources may include, but are not limited to, the following. The examples and configurations of the first and second resources may be implemented in various ways as described above.

[0229] Example 1: PUCCH format 0 / 1 or PRACH preamble may be used as the first resource, and PUCCH format 2 / 3 / 4 may be used as the second resource.

[0230] Example 2: PUCCH format 0 / 1 or PRACH preamble may be used as the first resource, and CG (configured grant) PUSCH may be used as the second resource. In this case, control-plane data such as MAC-CE or RRC or user-plane data may be transmitted via PUSCH.

[0231] Example 3: A DMRS sequence may be used as the first resource, and a PUCCH or PUSCH resource may be used as the second resource.

[0232] Example 1-1

[0233] Example 1-1 relates to the configuration of first information and second information. The first information may include information related to the second resource and / or second information, as well as whether the second resource / second information is transmitted.

[0234] For example, the first information may include terminal selection / decision information related to the second resource, as described in detail with reference to Example 1-1-1. Additionally or alternatively, the first information may include at least one of the amount, type, configuration, and urgency of information regarding the second information, as described in detail with reference to Example 1-1-2.

[0235] Example 1-1-1

[0236] Example 1-1-1 relates to selection / decision information of a terminal related to a second resource included in the first information.

[0237] As an example of the present disclosure, a base station may configure multiple second resource candidates for a terminal, and the terminal may select at least one of the second resource candidates and transmit second information to the base station based on the selected at least one resource. In this case, the first information may include information about a second resource selected by the terminal among the second resource candidates configured by the base station (e.g., an index of the second resource selected by the terminal, etc.).

[0238] Additionally or alternatively, the base station may not set some configuration values ​​for the second resource transmission to the terminal, and the terminal may determine some configuration value(s) related to the second resource transmission. Here, some configuration values ​​are the time / frequency location of the second resource (e.g., time interval between the first resource and the second resource, RB index), the amount / length of time / frequency / encoded bits of the second resource (e.g., N symbols / slots, M subcarriers / RB, encoded bit size between N1 bits and N2 bits), the resource format of the second resource (e.g., PUCCH format), the transmission method of the second resource (e.g., whether to transmit SFN), information related to whether / how / how many times the second resource is repeated (e.g., number of repetitions, repetition scheme (e.g., TDM, FDM, SDM)), the layer / port index of the second resource, the configuration values ​​related to sequence / code of the second resource (e.g., OCC), the MCS level of the second resource, information related to beam / spatial filter (receiving the second resource) (e.g., TCI, spatial relationship information), and information related to TRP (receiving the second resource) (e.g., CORESETpool index, SSB index). At least one may be included. The first information may include information related to the setting value(s) for the second resource determined / selected by the terminal.

[0239] Example 1-1-2

[0240] Example 1-1-2 relates to information related to second information included in first information. When an event occurs, the amount, type, and configuration information (e.g., the configuration of information fields and / or the amount / bits of information in each information field) of the second information to be transmitted by the terminal may vary depending on the terminal's circumstances. Since the amount, type, and configuration information of the second information are included in the first information, ambiguity that may arise when the base station interprets the second information from the second resource can be eliminated / reduced.

[0241] As described in Embodiment 1, when Embodiment 1-1 is applied, the first information (or a part of the first information) may include information implicitly conveyed by the terminal's selection / decision / transmission of the configured first resource (or candidate for the first resource). For example, if a specific first resource is configured / determined based on the information amount / type of the second information or the MCS of the second resource, or resource allocation, the base station may check the information amount / type of the second information or the MCS of the second resource, resource allocation information, etc. based on the first resource selected / transmitted by the terminal.

[0242] Example 1-2

[0243] Example 1-2 relates to a method for improving the reception performance of a first resource.

[0244] If the base station fails to properly receive the first resource, the base station may not be able to predict the transmission of the second resource based on the first resource. In this case, the transmission of the second resource may act as a strong interference signal at the corresponding resource location. Embodiment 1-2 relates to a method for improving the transmission and reception performance of the first resource to address this issue. At least one of the options described below may be utilized to improve the transmission and reception performance of the first resource. The options described below may be used in combination or independently.

[0245] Option 1: The base station may transmit an ACK for the first resource and / or the first information to the terminal. At this time, the ACK information may be transmitted from the base station to the terminal before the second resource and / or the second information is transmitted. After confirming the ACK for the first resource and / or the first information, the terminal may transmit the second resource to the base station. For example, if the ACK is not confirmed, the terminal may not transmit the second resource and / or the second information and retransmit the first information to the base station at the next transmission opportunity for the first resource.

[0246] Here, the ACK for the first resource or / and the first information may be a trigger / activation message / signal for the second resource or / and the second information. For example, an activation DCI for the second resource, such as a semi-static CSI report on PUCCH or an SPS PUSCH, may be utilized as the ACK.

[0247] When a terminal transmits a second resource upon receiving an ACK message, even without a separate deactivation / release instruction from the base station for the second resource, the second resource may be defined / regulated to remain active for a certain period of time or only during a transmission opportunity. For example, the second resource may be considered / defined to be active until the next first resource transmission opportunity arrives. In another example, the second resource may be considered / defined to be active only at a certain point in time / transmission opportunity.

[0248] Option 2: The terminal may repeatedly transmit the first resource and / or the first information using different time / frequency / spatial resources (prior to transmitting the second resource / second information). Additionally or alternatively, the terminal may transmit the same signal (e.g., UL SFN scheme) (e.g., the first resource and / or the first information) on the same time / frequency / spatial resources based on multiple panels / beams (e.g., TCI / spatial relationships).

[0249] The probability of transmitting and receiving the first information can be increased through repeated transmission of the first resource described above, simultaneous transmission of multiple panels, etc.

[0250] Option 3: The base station may configure a plurality of first resources or a plurality of parameter candidate values ​​of the same first resource to the terminal, the first resources having / configuring different uplink transmission parameters (e.g., beam (e.g., UL TCI, spatial relationship), transmission power, and / or timing advance). Accordingly, the terminal may select appropriate resource(s) / parameter(s) from among the above-described resources or parameter candidate values, and transmit the first resource or / and the first information to the base station based on the selected resource(s) / parameter(s).

[0251] Based on the options described above, the terminal can selectively apply beam, transmission power, timing advance, etc. to the first resource appropriately based on the event situation. Accordingly, the probability of transmitting and receiving the first information can be increased.

[0252] Example 1-3

[0253] Embodiment 1-3 relates to a method for increasing the transmission and reception probability of a second resource. While the base station may normally receive the first resource, it may not normally receive the second resource. To increase the reception probability of the second resource, at least one of the options described in Embodiment 1-2 may be applied to the second resource.

[0254] For example, the base station may transmit an ACK for the second resource and / or the second information to the terminal. If the ACK is not received, the terminal may retransmit the second resource and / or the second information to the base station.

[0255] As another example, the terminal may repeatedly transmit the second resource and / or the second information using different time / frequency / spatial resources. As another example, the terminal may transmit the same signal (e.g., using the UL SFN method) (e.g., the second resource and / or the second information) using the same time, frequency, and spatial resources based on multiple panel beams (e.g., TCI / spatial relationships).

[0256] As another example, the base station may configure a plurality of second resource(s) or multiple parameter candidate values ​​of the same second resource for the terminal, each having different uplink transmission parameters (e.g., beam, transmission power, and / or timing advance). The terminal may select appropriate resource(s) / value(s) from among the above-described resources or / and parameter candidate values, and transmit the second resource or / and second information to the base station based on the selected resource(s) / value(s).

[0257] Additionally, the base station can detect a decoding failure for the second resource through normal reception of the first resource. At this time, the base station can transmit report triggering or PUSCH scheduling information (for performing related reporting) to the terminal.

[0258] As another example, when repeating transmission of the first resource or / and the second resource, frequency location hopping may be performed / applied to obtain frequency diversity or to randomize interference.

[0259] Additionally or alternatively, even if reception of the first resource and the second resource is performed normally, the base station may (depending on at least one reason) not be able to promptly perform a related procedure (e.g., a procedure for changing the beam when the event that occurred to the terminal is a beam (failure) related event). In this case, the terminal may determine that the base station has not performed normal reception of the first resource and / or the second resource and may repeatedly transmit the first resource and / or the second resource to the base station. Accordingly, unnecessary terminal power consumption may occur.

[0260] To prevent such cases, a restriction may be defined / set / instructed for the terminal not to perform retransmission for the first resource and / or the second resource for a certain period of time after transmission of the first resource and / or the second resource. Here, the restriction may include a time or resource restriction related to retransmission for the first resource and / or the second resource. For example, if the second resource is transmitted by the terminal in slot n (where n is an integer greater than or equal to 0), the terminal may be restricted from transmitting the first resource for x slots, y msec, or z transmission opportunity(s) based on slot n.

[0261] The embodiments described above relate to a method in which the first and second resource transmission methods are separately performed for an event-based transmission / reception procedure. The method described in the embodiments described above can also be extended / applied to an event-based transmission / reception procedure in which three or more UL resource transmission methods are applied.

[0262] Here, the nth resource (n>2) may be a resource pre-allocated / set by the base station, such as the first resource and the second resource, or a resource triggered by the base station. For example, after transmitting the second information via the second resource (after a certain period of time and / or by a base station trigger), the third information may be transmitted via the third resource.

[0263] In the above-described embodiment(s) of the present disclosure, "whether an event has occurred" can be reported through a first resource, and "information related to the event" can be reported through a second resource. The amount of information in the second resource can vary depending on the amount of information transmitted through the first resource. Therefore, when transmitting specific information, it can be distinguished into first information having a fixed number of bits and second information having a variable number of bits based on the first information. Furthermore, the method of transmitting the first information through the first resource and the second information through the second resource can be generalized / extended and applied. For example, the two-part encoding technique applied to NR CSI can be applied to the event-based reporting procedure.

[0264] The above-described embodiments of the present disclosure can be applied not only to information reported to the network / base station as physical layer-based signals / information (e.g., CSI, L1-RSRP / SINR, HARQ-ACK), but also to information reported to the network / base station as upper layer-based signals / information. For example, when RRM / RLM-related reporting is performed according to an event-based reporting procedure, the above-described embodiments of the present disclosure can be applied. In addition, the above-described embodiments of the present disclosure can be applied to TB (transport block) transmission. For example, the first information can include information related to SR, and the second information can include a TB according to the SR.

[0265] The above-described embodiments differ from the event-based reporting method in basic wireless communication systems in that they establish two resources for event reporting (and / or additional information). Accordingly, the above-described three-step reporting method can be simplified into the following one-step reporting method:

[0266] - The terminal can transmit first information (e.g., information related to an event occurrence) to the base station through the network via the first resource among the two pre-allocated / set UL resources, and (after a certain time interval) transmit second information (e.g., BFR MAC-CE in the BFR procedure) to the base station through the second resource.

[0267] Accordingly, the problem of delay time until completion of the second information report, which is a problem / limitation of the existing 3-step reporting method, can be resolved.

[0268] Meanwhile, the first information and the second information may be transmitted simultaneously. Specifically, the terminal may transmit the first information and the second information together to the base station based on a single UL resource that has been pre-allocated / configured. In the case of the above-described method, since the base station cannot predict when the terminal will transmit information through a single UL resource or whether an event will occur, the resource overhead from the base station's perspective may increase proportionally with the number of terminals. When an event of the terminal occurs, not only the first information but also the second information must be transmitted in its entirety, so the amount of time / frequency / space / code resources required for "a single UL resource" inevitably becomes large, and therefore, there is a limitation / disadvantage of large UL resource overhead.

[0269] According to various embodiments of the present disclosure, the first resource has resource properties, but the UL resource overhead can be reduced by limiting the amount of information transmitted according to the resource.

[0270] Although the amount of time / frequency / space / code resources required for the second resource in this disclosure may be large, the base station can determine whether transmission related to the second resource is occurring by detecting / decoding / receiving the first resource. Accordingly, if a terminal does not use the second resource (e.g., if no event occurs), the resource can be allocated to another terminal, reducing overhead from a system perspective.

[0271] FIG. 9 is a diagram for explaining a signaling procedure of a network side and a terminal according to one embodiment of the present disclosure.

[0272] FIG. 9 illustrates an example of signaling between a network side and a terminal (UE) in an M-TRP situation to which the examples of the present disclosure described above (e.g., one or more combinations of Embodiment 1, Embodiment 1-1, Embodiment 1-1-1, Embodiment 1-1-2, Embodiment 1-2, Embodiment 1-3 or / and detailed embodiments thereof) can be applied.

[0273] Here, the UE / network side is exemplary and can be replaced with various devices as described with reference to FIG. 10. FIG. 9 is provided for convenience of explanation and does not limit the scope of the present disclosure. In addition, some of the steps shown in FIG. 9 may be omitted depending on the situation and / or settings. In addition, in the operation of the network side / UE of FIG. 9, the aforementioned uplink transmission / reception operation, M-TRP-related operation, etc. may be referenced or utilized.

[0274] In the following description, the network side may be a single base station including multiple TRPs, or a single cell including multiple TRPs. Alternatively, the network side may include multiple remote radio heads (RRHs) / remote radio units (RRUs).

[0275] For example, ideal / non-ideal backhauls can be established between TRP 1 and TRP 2, which constitute the network side. Furthermore, while the following description is based on multiple TRPs, it can be equally extended to transmissions through multiple panels / cells, and can also be extended to transmissions through multiple RRHs / RRUs, etc.

[0276] In addition, although the following description is based on "TRP", as described above, "TRP" can be replaced and applied with expressions such as panel, antenna array, cell (e.g., macro cell / small cell / pico cell, etc.), transmission point (TP), base station (gNB, etc.). As described above, TRP can be distinguished according to information about CORESET group (or CORESET pool) (e.g., CORESET index, ID).

[0277] For example, if a single terminal is configured to transmit and receive with multiple TRPs (or cells), this may mean that multiple CORESET groups (or CORESET pools) are configured for the single terminal. The configuration of such CORESET groups (or CORESET pools) can be performed via higher-layer signaling (e.g., RRC signaling).

[0278] Additionally, a base station may be a general term for an object that transmits and receives data with a terminal. For example, the base station may be a concept that includes one or more Transmission Points (TPs), one or more Transmission and Reception Points (TRPs), etc. Furthermore, the TPs and / or TRPs may include a panel of the base station, a transmission and reception unit, etc.

[0279] The terminal can receive configuration information related to at least one of the first resource, the first information, the second resource, or the second information from the network (S105).

[0280] As an example of the present disclosure, the configuration information may include time, frequency, and spatial resource-related information of the first resource and / or the second resource, beam / TRP-related information, format information (e.g., format information of a channel for transmitting the first / second resource / information), MCS information, and the like. Additionally or alternatively, the configuration information may include event-related configuration information (e.g., type of RS related to an event, type of event, and the like), information related to resource transmission triggering conditions, information related to the configuration of the first / second information, and the like.

[0281] The above configuration information may be transmitted from the network to the terminal via upper layer signaling (e.g., system information, RRC message, MAC-CE, etc.), but is not limited thereto.

[0282] Based on configuration information, the network can transmit RSs (e.g., CSI-RS, SSB, etc.) related to the event to the terminal (S110). The terminal can perform measurement operations on the received RSs. The terminal can monitor whether an event has occurred, etc., based on the measurement results for the received RSs (S120).

[0283] As an example of the present disclosure, depending on the characteristics / definition / setting of the triggering conditions of an event or the first / second resource, the event / condition may not be related to RS reception / measurement. In this case, procedure S110 may be omitted. For example, if user-plane data is transmitted as the second information, the event / condition may be related to the internal status of the terminal (e.g., data arrival, buffer, etc.), and procedure S110 may be omitted.

[0284] When an event occurs, the terminal may transmit first information to the network based on the first resource (S125). Furthermore, the terminal may transmit second information to the network based on the second resource (S130). For example, the terminal may transmit the first information and then transmit the second information after a certain time interval. The terminal's first information and / or second information may be based on configuration information to be transmitted by the network.

[0285] General devices to which the present disclosure may be applied

[0286] FIG. 10 illustrates a block diagram of a wireless communication device according to one embodiment of the present disclosure.

[0287] Referring to FIG. 10, the first device (100) and the second device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).

[0288] 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.

[0289] 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).

[0290] 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.

[0291] 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.

[0292] 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.

[0293] 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.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] 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.

[0298] 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.

[0299] 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.

[0300] 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 receiving, by a terminal, from a base station setting information related to at least one of a first resource or a second resource; A step of transmitting first information to the base station by the terminal based on the first resource based on the occurrence of an event; and A step of transmitting second information to the base station by the terminal based on the first information and the second resource, The first information comprises at least one of i) third information related to whether the event has occurred or ii) fourth information related to at least one of the second resource or the second information, A method, wherein a minimum interval between a first transmission occasion (TO) for the first information and a second TO for the second information is a first time interval.

2. In paragraph 1, A method wherein the first time interval is predefined or set or directed by the base station.

3. In paragraph 1, A method wherein the first information includes information about the first time interval determined by the terminal.

4. In paragraph 1, The above setting information includes information about at least one resource candidate, A method wherein the fourth information includes an index of the second resource selected by the terminal among the at least one resource candidate.

5. In paragraph 1, A method wherein the fourth information includes at least one of spatial filter information, location, length, format, sequence, or transmission method related to the second resource determined by the terminal.

6. In paragraph 1, A method wherein the fourth information includes at least one of information related to the amount and type of the second information or a field of the second information.

7. In paragraph 1, Based on the ACK (acknowledgement) information for the first information being transmitted from the base station to the terminal, the second information is transmitted from the terminal to the base station, A method in which retransmission of the first information is performed by the terminal based on the fact that ACK information for the first information is not transmitted from the base station to the terminal.

8. In paragraph 7, A method wherein the ACK information is included in control information that activates at least one of the second resource or the second information.

9. In paragraph 1, Retransmission of the first information is restricted during the second time interval after the first TO; A method wherein retransmission of the second information is restricted during a third time interval after the second TO.

10. In paragraph 1, Each of the first resource and the second resource includes at least one time resource, a frequency resource, and a spatial resource, A method wherein each of the first information and the second information is repeatedly transmitted to the base station based on at least one of the time resource, the frequency resource, and the space resource.

11. In paragraph 1, The first information is transmitted to the base station based on the first plurality of spatial parameters set in the first information or the first resource, A method in which the second information is transmitted to the base station based on the second information or a second plurality of spatial parameters set in the second resource.

12. In paragraph 1, A method wherein the allocation cycle of the first resource and the allocation cycle of the second resource based on the above setting information are the same.

13. In paragraph 1, A method wherein each of the first information and the second information is transmitted to the base station through an uplink control channel.

14. One or more transceivers; and comprising one or more processors coupled to said one or more transceivers; One or more of the above processors: Receiving configuration information related to at least one of the first resource or the second resource from a base station through one or more of the transceivers; Based on the occurrence of an event, transmitting first information to the base station through the one or more transceivers based on the first resource; and Based on the first information and the second resource, the second information is set to be transmitted to the base station through the one or more transceivers, The first information comprises at least one of i) third information related to whether the event has occurred or ii) fourth information related to at least one of the second resource or the second information, A terminal, wherein the minimum interval between a first transmission occasion (TO) for the first information and a second TO for the second information is a first time interval.

15. A step of transmitting configuration information related to at least one of the first resource or the second resource to the terminal by the base station; A step of receiving first information from the terminal by the base station based on the first resource based on the occurrence of an event; and A step of receiving second information from the terminal by the base station based on the first information and the second resource, The first information comprises at least one of i) third information related to whether the event has occurred or ii) fourth information related to at least one of the second resource or the second information, A method, wherein a minimum interval between a first transmission occasion (TO) for the first information and a second TO for the second information is a first time interval.

16. In the base station, the base station: one or more transceivers; and comprising one or more processors coupled to said one or more transceivers; One or more of the above processors: Transmitting configuration information related to at least one of the first resource and the second resource to the terminal via one or more of the transceivers; Based on the occurrence of an event, receiving first information from the terminal through the one or more transceivers based on the first resource; and Based on the first information and the second resource, the second information is set to be received from the terminal through the one or more transceivers, The first information comprises at least one of i) third information related to whether the event has occurred or ii) fourth information related to at least one of the second resource or the second information, A base station, wherein the minimum interval between a first transmission occasion (TO) for the first information and a second TO for the second information is a first time interval.

17. In a processing device set to control a terminal, the processing device: 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 that, when executed by said one or more processors, perform a method according to any one of claims 1 to 13.

18. One or more non-transitory computer-readable media storing one or more instructions, A computer-readable medium, wherein said one or more instructions are executed by one or more processors to control a device to perform a method according to any one of claims 1 to 13.

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