Method and device for performing configured grant-based transmission and reception operation in wireless communication system

Abstract

A method and a device for communicating in a wireless communication system are disclosed. The method according to one embodiment of the present disclosure may comprise steps in which a first terminal: receives, from a base station, common configuration information related to a configured grant (CG) configured for a plurality of terminals including the first terminal; transmits, to the base station, a first preamble for a first CG uplink (UL) channel resource from among a plurality of CG UL channel resources based on the common configuration information; receives, from the base station, a response message including first information related to the first preamble and / or second information related to the first CG UL channel resource; and transmits, to the base station, at least one CG UL channel on the basis of the first CG UL channel resource.

Description

Method and device for performing a set grant-based transmission and reception operation in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and more specifically, to a method and apparatus for performing a configured grant (CG)-based transmission and reception operation in a wireless communication system.

[0002] Mobile communication systems were developed to provide voice services while ensuring user mobility. However, mobile communication systems have expanded their scope to include data services as well as voice. Currently, due to the explosive increase in traffic leading to resource shortages and users demanding higher-speed services, more advanced mobile communication systems are required.

[0003] The requirements for next-generation mobile communication systems largely include the ability to accommodate explosive data traffic, a dramatic increase in transmission rates per user, a significantly increased number of connected devices, very low end-to-end latency, and high energy efficiency. To achieve this, various technologies are being researched, such as dual connectivity, massive multiple input multiple output (MMIMO), 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 apparatus for performing CG-based transmission and reception operations in a wireless communication system.

[0005] The technical problem of the present disclosure is to provide a method and apparatus for sharing and transmitting / receiving CG-based resources shared by a plurality of terminals over LBT (listen before talk).

[0006] The technical problems to be solved in this disclosure are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this disclosure belongs from the description below.

[0007] A method according to one embodiment of the present disclosure may include: receiving common configuration information related to a configured grant (CG) for a plurality of terminals including a first terminal from a base station by the first terminal; transmitting a first preamble for a first CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the common configuration information to the base station by the first terminal; receiving a response message from the base station by the first terminal that includes at least one of first information related to the first preamble or second information related to the first CG UL channel resource; and transmitting at least one CG UL channel based on the first CG UL channel resource to the base station by the first terminal.

[0008] A method according to another embodiment of the present disclosure may include: transmitting common configuration information related to a configured grant (CG) for a plurality of terminals to the plurality of terminals by a base station; receiving a first preamble for a first CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the common configuration information from a first terminal among the plurality of terminals by the base station; transmitting a response message to the first terminal by the base station that includes at least one of first information related to the first preamble or second information related to the first CG UL channel resource; and receiving at least one CG UL channel based on the first CG UL channel resource from the first terminal by the base station.

[0009] By various embodiments of the present disclosure, a method and apparatus for performing CG-based transmission and reception operations in a wireless communication system may be provided.

[0010] According to various embodiments of the present disclosure, a method and apparatus for sharing and transmitting / receiving CG-based resources shared by a plurality of terminals over LBT may be provided.

[0011] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

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

[0013] FIG. 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 may be applied.

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

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

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

[0018] FIG. 6 illustrates physical channels used in a wireless communication system to which the present disclosure may be applied, and a general method of transmitting and receiving signals using these channels.

[0019] FIG. 7 is a diagram illustrating the process of a first terminal performing communication according to one embodiment of the present disclosure.

[0020] FIG. 8 is a diagram illustrating the process of a base station performing communication according to one embodiment of the present disclosure.

[0021] FIG. 9 illustrates a block diagram of a wireless communication device according to one embodiment of the present disclosure.

[0022] Hereinafter, preferred embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. The detailed description disclosed below, together with the accompanying drawings, is intended to describe exemplary embodiments of the present disclosure and is not intended to represent the only embodiment in which the present disclosure may be practiced. The following detailed description includes specific details to provide a complete understanding of the present disclosure. However, those skilled in the art will know that the present disclosure may be practiced without such specific details.

[0023] In some cases, to avoid obscuring the concept of the present disclosure, known structures and devices may be omitted or illustrated in the form of a block diagram focusing on the core functions of each structure and device.

[0024] In the present disclosure, when a component is described as being “connected,” “combined,” or “joined” with another component, this may include not only a direct connection but also an indirect connection in which another component exists between them. Furthermore, in the present disclosure, the terms “comprising” or “having” specify the presence of the mentioned features, steps, actions, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, actions, elements, components, and / or groups thereof.

[0025] In the present disclosure, terms such as "first," "second," etc. are used solely for the purpose of distinguishing one component from another and are not used to limit the components, nor do they limit the order or importance of the components unless specifically stated otherwise. Accordingly, within the scope of the present disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and likewise, a second component in one embodiment may be referred to as a first component in another embodiment.

[0026] The terms used in this disclosure are for the description of specific embodiments and are not intended to limit the claims. As used in the description of embodiments and in the appended claims, the singular form is intended to include the plural form unless the context clearly indicates otherwise. The term "and / or" as used in this disclosure may refer to any one of the related enumerated items, or refers to and includes any and all possible combinations of two or more of them. Additionally, the " / " between words in this disclosure has the same meaning as "and / or" unless otherwise noted.

[0027] 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 the process of controlling the network and transmitting or receiving signals by a device (e.g., a base station) governing the wireless communication network, or in the process of transmitting or receiving signals with or between the network and terminals by a terminal connected to the wireless network.

[0028] In the present disclosure, transmitting or receiving a channel includes the meaning of transmitting or receiving information or a signal through said 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.

[0029] In the following, the downlink (DL) refers to communication from a base station to a terminal, and the uplink (UL) refers to communication from a terminal to a base station. In the downlink, the transmitter may be part of the base station, and the receiver may be part of the terminal. In the uplink, the transmitter may be part of the terminal, and the receiver may be part of the base station. The base station may be referred to as the first communication device, and the terminal as the second communication device. The term base station (BS) may be replaced by terms such as fixed station, Node B, eNB (evolved-NodeB), gNB (Next Generation NodeB), BTS (base transceiver system), Access Point (AP), network (5G network), AI (Artificial Intelligence) system / module, RSU (roadside 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, drone (UAV: Unmanned Aerial Vehicle), AR (Augmented Reality) device, VR (Virtual Reality) device.

[0030] 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), and 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 the UMTS (Universal Mobile Telecommunications System). 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) is part of E-UMTS (Evolved UMTS) using 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.

[0031] For clarity of explanation, the description is based on 3GPP communication systems (e.g., LTE-A, NR), but the technical scope of this disclosure is not limited thereto. LTE refers to technology from 3GPP Technical Specification (TS) 36.xxx Release 8 onwards. Specifically, LTE technology from 3GPP TS 36.xxx Release 10 onwards is referred to as LTE-A, and LTE technology from 3GPP TS 36.xxx Release 13 onwards is referred to as LTE-A pro. 3GPP NR refers to technology from TS 38.xxx Release 15 onwards. LTE / NR may be referred to as a 3GPP system. "xxx" indicates a specific standard document number. LTE / NR may be collectively referred to as a 3GPP system. Regarding background technology, terms, abbreviations, etc. used in the description of this disclosure, reference may be made to matters described in standard documents published prior to this disclosure. For example, the following documents may be referenced.

[0032] For 3GPP LTE, refer to 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).

[0033] For 3GPP NR, you may refer to 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 (General Description of NR and NG-RAN (New Generation-Radio Access Network)), and TS 38.331 (Radio Resource Control Protocol Specification).

[0034] Abbreviations of terms that may be used in this disclosure are defined as follows.

[0035] - BM: Beam management

[0036] - CQI: Channel quality indicator

[0037] - CRI: Channel State Information - Reference Signal Resource Indicator

[0038] - CSI: Channel state information

[0039] - CSI-IM: Channel state information - interference measurement

[0040] - CSI-RS: Channel state information - reference signal

[0041] - DMRS: demodulation reference signal

[0042] - FDM: Frequency Division Multiplexing

[0043] - FFT: Fast Fourier Transform

[0044] - IFDMA: Interleaved frequency division multiple access

[0045] - IFFT: Inverse Fast Fourier Transform

[0046] - L1-RSRP: Layer 1 reference signal received power

[0047] - L1-RSRQ: Layer 1 reference signal received quality

[0048] - MAC: Medium Access Control

[0049] - NZP: Non-zero power

[0050] - OFDM: Orthogonal Frequency Division Multiplexing

[0051] - PDCCH: Physical downlink control channel

[0052] - PDSCH: Physical downlink shared channel

[0053] - PMI: Precoding Matrix Indicator

[0054] - RE: resource element

[0055] - RI: Rank indicator

[0056] - RRC: Radio Resource Control

[0057] - RSSI: Received signal strength indicator

[0058] - Rx: Reception

[0059] - QCL: quasi co-location

[0060] - SINR: Signal to interference and noise ratio

[0061] - SSB (or SS / PBCH block): Synchronization signal block (including primary synchronization signal (PSS), secondary synchronization signal (SSS), and physical broadcast channel (PBCH))

[0062] - TDM: Time Division Multiplexing

[0063] - TRP: transmission and reception point

[0064] - TRS: Tracking Reference Signal

[0065] - Tx: transmission

[0066] - UE: User equipment

[0067] - ZP: Zero Power

[0068] General System

[0069] As more communication devices require larger communication capacities, the need for enhanced mobile broadband communication compared to existing radio access technology (RAT) is emerging. Furthermore, Massive Machine Type Communications (MTC), which connects multiple devices and objects to provide various services anytime and anywhere, is also one of the major issues to be considered in next-generation communication. In addition, communication system designs that take into account services and terminals sensitive to reliability and latency are being discussed. As such, the introduction of next-generation RATs considering eMBB (enhanced mobile broadband communication), Mmtc (massive MTC), and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed, and for convenience, this technology is referred to as NR in this disclosure. NR is an expression representing an example of 5G RAT.

[0070] A new RAT system including NR uses an OFDM transmission method or a similar transmission method. 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). Or, a single cell may support multiple numerologies. That is, terminals operating with different numerologies can coexist within a single cell.

[0071] Numerology corresponds to a single subcarrier spacing in the frequency domain. Different numerologies can be defined by scaling the reference subcarrier spacing to an integer N.

[0072] FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.

[0073] Referring to FIG. 1, the NG-RAN consists of gNBs that provide NG-RA (NG-Radio Access) user plane (i.e., new access stratum (AS) sublayer / PDCP (Packet Data Convergence Protocol) / RLC (Radio Link Control) / MAC / PHY) and control plane (RRC) protocol endpoints for the UE. The gNBs are interconnected via Xn interfaces. The gNBs are also connected to the NGC (New Generation Core) via NG interfaces. More specifically, the gNBs are connected to the AMF (Access and Mobility Management Function) via N2 interfaces and to the UPF (User Plane Function) via N3 interfaces.

[0074] FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure may be applied.

[0075] An NR system can support multiple numerologies. Here, the numerology can be defined by subcarrier spacing and cyclic prefix (CP) overhead. In this case, multiple subcarrier spacings can be derived by scaling the base (reference) subcarrier spacing by an integer N (or μ). Furthermore, the numerology used can be selected independently of the frequency band, even if it is assumed that very low subcarrier spacings are not used at very high carrier frequencies. Additionally, various frame structures based on multiple numerologies can be supported in an NR system.

[0076] Below, we examine the OFDM numerologies and frame structures that can be considered in NR systems. Many OFDM numerologies supported in NR systems can be defined as shown in Table 1 below.

[0077] μΔf=2 μ ·15 [kHz]CP015 Normal 130 Normal 260 Normal, Extended 3120 Normal 4240 Normal

[0078] NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, if the SCS is 15 kHz, it supports a wide area in traditional cellular bands; if the SCS is 30 kHz or 60 kHz, it supports dense-urban environments, lower latency, and wider carrier bandwidth; and if the SCS is 60 kHz or higher, it supports a bandwidth greater than 24.25 GHz to overcome phase noise. NR frequency bands are defined by two types of frequency ranges (FR1 and FR2). FR1 and FR2 can be configured as shown in Table 2 below. Additionally, FR2 may refer to millimeter wave (mmW).

[0079] Frequency Range Designation Corresponding Frequency Range Subcarrier Spacing FR1 4 10MHz - 7125MHz 15, 30, 60kHz FR2 24 250MHz - 52600MHz 60, 120, 240kHz

[0080] Regarding the frame structure in an NR system, the magnitude of various fields in the time domain is T c =1 / (Δf max ·N f It is expressed as a multiple of the time unit of ). Here, Δf max =480·10 3 Hz and N f = 4096. Downlink and uplink transmission is T f =1 / (Δf max Nf / 100)·T c It is organized into radio frames having an interval of = 10ms. Here, each radio frame is T sf =(Δf max N f / 1000)·T c =1ms It consists of 10 subframes having the interval. In this case, there may be one set of frames for the uplink and one set of frames for the downlink. Additionally, the transmission at uplink frame number i from the terminal is T before the start of the corresponding downlink frame at the terminal. TA =(N TA +N TA,offset )T c Must start previously. For a subcarrier spacing configuration μ, the slots are n within the subframe. s μ ∈{0,..., N slot Numbered in increasing order of {subframe,μ-1}, and n within the radio frame s,f μ ∈{0,..., N slot frame,μ Numbers are assigned in increasing order of {-1}. One slot is N symb slot It consists of consecutive OFDM symbols of, and N symb slot is determined by CP. Slot n in the subframe s μ The start is OFDM symbol n in the same subframe. s μ N symb slot It is aligned with the start and time of. Not all terminals can transmit and receive simultaneously, which means that not all OFDM symbols in the downlink slot or uplink slot can be used.

[0081] Table 3 shows the number of OFDM symbols per slot in a standard CP (N symb slot ), number of slots per wireless frame (N slot frame,μ ), number of slots per subframe (N slot Table 4 shows the number of OFDM symbols per slot, the number of slots per wireless frame, and the number of slots per subframe in the extended CP.

[0082] μN symb slot N slot frame,μ N slot subframe,μ01410111420221440431480841416016

[0083] μN symb slot N slot frame,μ N slot subframe,μ212404

[0084] Figure 2 is an example of the case where μ=2 (SCS is 60kHz). Referring to Table 3, one subframe can contain four slots. The 1 subframe={1,2,4} slot shown in Figure 2 is an example, and the number of slot(s) that can be included in one subframe is defined as in Table 3 or Table 4. Additionally, a mini-slot can contain 2, 4, or 7 symbols, or more or fewer symbols. Regarding physical resources in an NR system, antenna ports, resource grids, resource elements, resource blocks, carrier parts, etc., may be considered. Below, the physical resources that can be considered in an NR system will be examined in detail. First, with respect to antenna ports, an antenna port is defined such that the channel carrying a symbol on the antenna port can be inferred from the channel carrying another symbol on the same antenna port. If the large-scale property of the channel carrying a symbol on one antenna port can be inferred from the channel carrying a symbol on another antenna port, the two antenna ports can be said to be in 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. FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure may be applied. Referring to FIG. 3, the resource grid N in the frequency domainRB μ N sc RB It consists of subcarriers, and one subframe is 14.2 μ It is described by way of example that it consists of OFDM symbols, but is not limited thereto. In an NR system, the transmitted signal is N RB μ N sc RB One or more resource grids composed of subcarriers and 2 μ N symb (μ) It is described by the OFDM symbols of. Here, N RB μ≤ N RB max,μ It is. The above N RB max,μ represents the maximum transmission bandwidth, which can vary not only between numerologies but also between uplink and downlink. In this case, a single resource grid can be established 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'). Here, k=0,...,N RB μ N sc RB -1 is an index in the frequency domain, and l'=0,...,2 μ N symb (μ) -1 refers to the location of a symbol within a subframe. When referring to a resource element in a slot, an index pair (k,l) is used.

[0085] Here, l=0,...,N symb μ It is -1. The resource factor (k,l') for μ and antenna port p is the complex value a k,l' (p,μ)It corresponds to. If there is no risk of confusion or if a specific antenna port or numerology is not specified, the indices p and μ may be dropped, and the resulting complex value is a k,l' (p) or a k,l' This can be. In addition, the resource block (RB) is N in the frequency domain. sc RB =12 is defined by consecutive subcarriers.

[0086] Point A serves as a common reference point for the resource block grid and is acquired as follows.

[0087] - OffsetToPointA for the Primary Cell (PCell) downlink represents the frequency offset between point A and the lowest subcarrier of the lowest resource block that overlaps with the SS / PBCH block used by the terminal for initial cell selection. It is expressed in resource block units assuming a 15 kHz subcarrier interval for FR1 and a 60 kHz subcarrier interval for FR2.

[0088] - absoluteFrequencyPointA represents the frequency-location of point A as expressed in ARFCN (absolute radio-frequency channel number).

[0089] Common resource blocks are numbered from 0 upward in the frequency domain for a subcarrier spacing setting μ. The center of subcarrier 0 of common resource block 0 for a subcarrier spacing setting μ coincides with 'point A'. Common resource block number n in the frequency domain CRB μThe relationship between the resource element (k,l) and the subcarrier spacing setting μ is given as Equation 1 below.

[0090]

[0091] In Equation 1, k is defined relative to point A such that k=0 corresponds to a subcarrier centered at point A. Physical resource blocks range from 0 to N within the bandwidth part (BWP). BWP,i size,μ Numbers are assigned up to -1, and i is the BWP number. Physical resource block n in BWP i PRB and common resource block n CRB The relationship between them is given by the following mathematical formula 2.

[0092]

[0093] N BWP,i start,μ is a common resource block where BWP starts relative to common resource block 0.

[0094] FIG. 4 illustrates a physical resource block in a wireless communication system to which the present disclosure may be applied. FIG. 5 illustrates a slot structure in a wireless communication system to which the present disclosure may be applied.

[0095] Referring to FIGS. 4 and 5, a slot contains multiple symbols in the time domain. For example, in the case of a standard CP, one slot contains 7 symbols, but in the case of an extended CP, one slot contains 6 symbols.

[0096] A carrier includes multiple subcarriers in the frequency domain. A Resource Block (RB) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) 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 may include up to N (e.g., 5) BWPs. Data communication is performed through the active BWPs, and only one BWP can be active for a single terminal. In the resource grid, each element is referred to as a Resource Element (RE) and can be mapped to a single complex symbol.

[0097] NR systems can support up to 400 MHz per Component Carrier (CC). If a terminal operating in such a wideband CC always keeps its radio frequency (RF) chip turned on for the entire CC, the terminal's battery consumption may increase. Alternatively, considering various use cases operating within a single wideband CC (e.g., eMBB, URLLC, Mmtc, V2X, etc.), different numerologies (e.g., subcarrier spacing) may be supported for each frequency band within that CC. Or, the capability regarding maximum bandwidth may vary by terminal. Taking this into account, the base station may instruct the terminal to operate only on a portion of the bandwidth rather than the entire bandwidth of the wideband CC, and for convenience, this portion of bandwidth is defined as the bandwidth part (BWP). A BWP can consist of consecutive RBs on the frequency axis and can correspond to a single numerology (e.g., subcarrier spacing, CP length, slot / mini-slot interval).

[0098] Meanwhile, the base station may configure multiple BWPs within a single CC configured for a terminal. For example, a BWP occupying a relatively small frequency range may be configured in the PDCCH monitoring slot, and the PDSCH indicated by the PDCCH may be scheduled on a larger BWP. Alternatively, if UEs are concentrated on a specific BWP, some terminals may be configured to a different BWP for load balancing. Or, considering frequency domain inter-cell interference cancellation between neighboring cells, a portion of the spectrum in the middle of the total bandwidth may be excluded, and both BWPs may be configured within the same slot. That is, the base station may configure at least one DL / UL BWP for a terminal associated with a broadband CC. The base station may activate at least one DL / UL BWP among the DL / UL BWP(s) configured at a specific time (by L1 signaling, MAC CE (Control Element), or RRC signaling, etc.). Additionally, the base station may instruct a switch to another configured DL / UL BWP (by L1 signaling, MAC CE, RRC signaling, etc.). Alternatively, a switch to a defined DL / UL BWP may occur based on a timer when the timer value expires. In this case, the activated DL / UL BWP is defined as the active DL / UL BWP. However, since the terminal may not receive the configuration for the DL / UL BWP in situations such as when the terminal is performing the initial access process or before the RRC connection is set up, the DL / UL BWP assumed by the terminal in such situations is defined as the initial active DL / UL BWP.

[0099] FIG. 6 illustrates physical channels used in a wireless communication system to which the present disclosure may be applied, and a general method of transmitting and receiving signals using these channels.

[0100] In a wireless communication system, a terminal receives information from a base station via the downlink and transmits information to the base station via the uplink. The information transmitted and received by the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information being transmitted and received.

[0101] 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 (SSS) from the base station to synchronize with the base station and obtain information such as a cell identifier (ID). Subsequently, the terminal receives a Physical Broadcast Channel (PBCH) from the base station to obtain broadcast information within the cell. Meanwhile, during the initial cell search phase, the terminal receives a Downlink Reference Signal (DL RS) to check the downlink channel status.

[0102] A terminal that has completed initial cell search can obtain more specific system information by receiving a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH) according to the information carried on the PDCCH (S602).

[0103] Meanwhile, when a terminal first connects to a base station or when there are no wireless resources available for signal transmission, the terminal may perform a Random Access Procedure (RACH) with respect to the base station (steps S603 to S606). To do this, the terminal transmits a specific sequence as a preamble through a Physical Random Access Channel (PRACH) (S603 and S605), and may receive a response message for the preamble through a PDCCH and a corresponding PDSCH (S604 and S606). In the case of a contention-based RACH, a Contention Resolution Procedure may additionally be performed.

[0104] A terminal that has performed the procedure described above may subsequently perform PDCCH / PDSCH reception (S607) and Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) transmission (S608) as a general uplink / downlink signal transmission procedure. In particular, the terminal receives Downlink Control Information (DCI) through the PDCCH. Here, the DCI includes control information such as resource allocation information for the terminal, and its format varies depending on its purpose of use.

[0105] Meanwhile, control information transmitted by the terminal to the base station via the uplink or received by the terminal 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 a 3GPP LTE system, the terminal may transmit the aforementioned control information, such as CQI / PMI / RI, via PUSCH and / or PUCCH.

[0106] Table 5 shows an example of the DCI format in an NR system.

[0107] DCI Format Utilization 0_0 Scheduling of PUSCH within a single cell 0_1 Scheduling of one or multiple PUSCH within a single cell, or instructing the UE with cell group (CG) downlink feedback information 0_2 Scheduling of PUSCH within a single cell 1_0 Scheduling of PDSCH within a single DL cell 1_1 Scheduling of PDSCH within a single cell 1_2 Scheduling of PDSCH within a single cell

[0108] Referring to Table 5, DCI formats 0_0, 0_1, and 0_2 may include resource information related to PUSCH scheduling (e.g., UL / SUL (Supplementary UL), frequency resource allocation, time resource allocation, frequency hopping, etc.), information related to Transport Blocks (TB: Transport Block) (e.g., MCS (Modulation Coding and Scheme), NDI (New Data Indicator), RV (Redundancy Version), etc.), information related to Hybrid - Automatic Repeat and request (e.g., process number, DAI (Downlink Assignment Index), PDSCH-HARQ feedback timing, etc.), information related to multiple antennas (e.g., DMRS sequence initialization information, antenna port, CSI request, etc.), and power control information (e.g., PUSCH power control, etc.), and the control information included in each DCI format may be predefined.

[0109] DCI format 0_0 is used for PUSCH scheduling in a cell. The information contained in DCI format 0_0 is transmitted after being scrambled by CRC (cyclic redundancy check) by C-RNTI (Cell RNTI: Cell Radio Network Temporary Identifier), CS-RNTI (Configured Scheduling RNTI), or MCS-C-RNTI (Modulation Coding Scheme Cell RNTI).

[0110] DCI format 0_1 ​​is used to instruct a terminal on the scheduling of one or more PUSCHs in a cell, or on configured grant (CG) downlink feedback information. The information contained in DCI format 0_1 ​​is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI (Semi-Persistent CSI RNTI), or MCS-C-RNTI.

[0111] DCI format 0_2 is used for scheduling PUSCH in a single cell. The information contained in DCI format 0_2 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI, or MCS-C-RNTI.

[0112] Next, DCI formats 1_0, 1_1, and 1_2 may include resource information related to PDSCH scheduling (e.g., frequency resource allocation, time resource allocation, VRB (virtual resource block)-PRB (physical resource block) mapping, etc.), transmission block (TB) related information (e.g., MCS, NDI, RV, etc.), HARQ related information (e.g., process number, DAI, PDSCH-HARQ feedback timing, etc.), multiple antenna related information (e.g., antenna port, TCI (transmission configuration indicator), SRS (sounding reference signal) request, etc.), PUCCH related information (e.g., PUCCH power control, PUCCH resource indicator, etc.), and the control information included in each DCI format may be predefined.

[0113] DCI format 1_0 is used for scheduling PDSCH in a single DL cell. The information contained in DCI format 1_0 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, or MCS-C-RNTI.

[0114] DCI format 1_1 is used for scheduling PDSCH in a single cell. The information contained in DCI format 1_1 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, or MCS-C-RNTI.

[0115] DCI format 1_2 is used for PDSCH scheduling in a single cell. The information contained in DCI format 1_2 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, or MCS-C-RNTI.

[0116] CG-based transmission and reception operation

[0117] CG-based uplink transmission and reception operations may include an operation in which a terminal transmits and receives uplink data at periodic or specified timings without (dynamic) scheduling signals (e.g., DCI) by utilizing resources (e.g., CG UL channel resources, etc.) and configuration information pre-allocated from a base station. For CG uplink transmission, the terminal may receive CG-related configuration information through upper-layer signaling (e.g., RRC messages, SIB (system information block), etc.). CG-related configuration information may include allocated CG UL channel resources (e.g., frequency and time), transmission period, allocated transmission timing, allowed modulation and coding schemes, number of repeated transmissions, etc.

[0118] For example, a terminal may receive upper-layer signaling from a base station that includes configuration information for setting CG UL channel resources and transmission parameters. The terminal may perform uplink transmission using predefined CG UL channel resources at a set uplink transmission time. At this time, the size, redundancy version (RV), etc. required for uplink transmission may be determined according to CG-related settings.

[0119] In a basic wireless communication system, one or more CG PUSCH-related resources can be configured for a terminal for periodic transmission / reception, low latency, and PDCCH overhead. Each CG configuration can repeat the configuration / instruction of resource allocation with a period. That is, the resource allocation initially configured / instructed can be repeated at the configured period, and the terminal can perform uplink transmission from the configured / instructed resource without the PDCCH reception process (e.g., scheduling by PDCCH).

[0120] In the case of a basic wireless communication system, a single terminal occupied and used the CG PUSCH setting. At this time, there was a problem in that if the terminal did not use the CG PUSCH resource, the CG PUSCH resource was wasted.

[0121] Various embodiments of the present disclosure relate to methods and / or procedures based on uplink CG radio resources that are semi-statically configured, but are not limited thereto. Various examples of the present disclosure may also be applied to radio resources allocated through dynamic scheduling received by a terminal.

[0122] For example, a method for determining a single HARQ-ACK timing for multiple downlink radio resources allocated to a terminal can be applied regardless of whether it is an SPS PDSCH, a PDSCH indicated by dynamic scheduling, etc. As another example, various embodiments of the present disclosure can also be applied when multiple radio resources are not configured semi-statically but are configured through dynamic instruction (for example, when multiple radio resources are configured at once via DCI).

[0123] Accordingly, the methods proposed in this disclosure can be applied to all types of transmission and reception methods expected by base stations and terminals, without further explanation. For convenience of explanation, in this disclosure, SPS will be used as a general concept to collectively refer to wireless resources that are set semi-statically (e.g., DL / UL SPS, CG).

[0124] In the present disclosure, a transmission occasion (TO) or CO (CG occasion) may refer to a radio resource set up for CG use (e.g., CG PUSCH). An entity performing transmission at a transmission occasion (e.g., a base station in the case of downlink transmission and a terminal in the case of uplink transmission) may attempt to transmit at the transmission occasion, and a receiver (e.g., a terminal in the case of downlink reception and a base station in the case of uplink reception) may expect transmission at each transmission occasion and attempt to receive.

[0125] FIG. 7 is a diagram illustrating the process of a first terminal performing communication according to one embodiment of the present disclosure.

[0126] The first terminal can receive common configuration information related to a configured grant (CG) for a plurality of terminals including the first terminal from a base station (S710).

[0127] At this time, the first terminal (or / and a plurality of terminals including the first terminal) may not be in RRC_Connected mode (or state). For example, the first terminal may be in RRC_INACTIVE or RRC_IDLE mode. However, this is not limited thereto, and the description below may also apply when the first terminal is in RRC_Connected mode.

[0128] For example, the common configuration information may include at least one of a common configuration information index, information related to a plurality of CG UL channel resources (e.g., an index of a plurality of CG UL channel resources), period information for repeating the configuration of a plurality of CG UL channel resources, a plurality of preamble IDs, or information related to the demodulation reference signal (DMRS) sequence of each of a plurality of terminals.

[0129] In addition, common configuration information can be transmitted to multiple terminals including the first terminal via upper layer signaling (e.g., RRC message, SIB, etc.). That is, multiple terminals can share various types of parameters (e.g., one or more CG settings, etc.) set by the common configuration information.

[0130] The first terminal can transmit a first preamble for a first CG UL channel resource among a plurality of CG UL channel resources based on common setting information to a base station (S720).

[0131] For example, the preamble ID may be set differently for each terminal, or the preamble ID may be set differently for each CG setting (or / and CG UL channel resource, etc.). For example, each of the multiple CG UL channel resources set by common setting information may be mapped to an individual preamble ID. Additionally or alternatively, multiple preamble IDs may be mapped to common setting information (e.g., an index of the common setting information).

[0132] Whenever the first terminal transmits a preamble and / or CG UL channel, it may randomly select a specific preamble from among a plurality of preambles. In the following, it is assumed that the first terminal selects a first preamble, and the ID of the first preamble is associated with a first CG UL channel resource and / or common configuration information.

[0133] The first terminal can receive a response message from the base station containing at least one of first information related to the first preamble or second information related to the first CG UL channel resource (S730).

[0134] Specifically, the first terminal can identify whether the response message includes first information related to the first preamble it transmitted or / and a second resource related to the first CG UL channel resource related to the ID of the first preamble.

[0135] For example, the first information may include at least one of an identifier (ID) value associated with the first preamble (for example, a RAPID value corresponding to the ID associated with the first preamble) or identification information of the first terminal that transmitted the first preamble. And, the second information may include at least one of an index of the first CG UL channel resource or an index of common configuration information.

[0136] For example, the first terminal may receive a response message (e.g., Msg. 2) from the base station via a physical downlink shared channel (PDSCH). The PDSCH containing the response message may be scheduled by first downlink control information (DCI) that is scrambled by a cyclic redundancy check (CRC) by a random access (RA) radio network temporary identifier (RNTI) or a group RNTI. However, this is merely one embodiment, and the response message may be transmitted to the first terminal via the first DCI.

[0137] Unlike step S730, if the response message does not include the first information and / or the second information, the first terminal may attempt to transmit the preamble after attempting to detect the transmission of the remaining terminals among the plurality of terminals, excluding the first terminal.

[0138] The first terminal can transmit at least one CG UL channel to a base station based on the first CG UL channel resource (S740).

[0139] Specifically, based on the identification that the response message contains the first information and / or the second information, the first terminal may transmit at least one CG UL channel to the base station through the first CG UL channel resource associated with the ID of the first preamble.

[0140] For example, at least one CG UL channel may include at least one medium access control (MAC) protocol data unit (PDU). And, at least one MAC PDU may include identification information of the first terminal (e.g., terminal ID and / or logical channel identifier of the first terminal, etc.).

[0141] For example, the first terminal can detect / measure whether the remaining terminals have transmitted a preamble.

[0142] For example, the first terminal can identify that, from the n-1th preamble opportunity (or random access channel opportunity) to the n-1th preamble opportunity, the preamble transmission of the remaining terminals among the plurality of terminals, excluding the first terminal, is not performed. Accordingly, the first terminal can transmit the first frameble to the base station at the nth preamble opportunity.

[0143] Here, the preamble opportunity (or random access channel opportunity) may include time, frequency or / and space resources, etc., for transmitting the preamble (or random access channel).

[0144] At this time, a measurement operation for the first frameble transmission may be performed by the remaining terminal. That is, the remaining terminal may also perform a measurement of the first preamble transmission operation of the first terminal at the n-th frameble opportunity. Based on whether the result of the measurement operation satisfies a predefined condition (e.g., whether the quality value of the first preamble transmitted by the first terminal and / or the signal strength exceeds a specific value), the remaining terminal may attempt to transmit the preamble at the n+1-th frameble opportunity. That is, the remaining terminal may not attempt to transmit the preamble at the frameble opportunity in which the first terminal transmits the first preamble.

[0145] For example, based on at least one CG UL channel being transmitted to a base station, the first terminal may receive a second DCI that has been CRC-scraped by a cell-RNTI associated with the identification information of the first terminal. Upon receiving the second DCI, the first terminal may confirm that contention resolution is complete. That is, contention resolution may be completed based on the second DCI.

[0146] With reference to FIG. 7, a 4-step based operation of the first terminal has been described. However, this is merely one embodiment, and the first terminal may also perform a 2-step based operation. For example, the first terminal may transmit the first preamble and the CG UL channel together to the base station.

[0147] The method described in the example of FIG. 7 can be performed by the first device (100) of FIG. 9. That is, the first terminal of FIG. 7 can be implemented as the first device (100) of FIG. 9. For example, one or more processors (102) of the first device (100) of FIG. 9 can receive common configuration information related to CG from a base station through one or more transceivers (106) for a plurality of terminals including the first terminal. One or more processors (102) can transmit a first preamble for a first CG UL channel resource among a plurality of CG UL channel resources based on the common configuration information to the base station through one or more transceivers (106). One or more processors (102) can receive a response message from the base station through one or more transceivers (106) that includes at least one of first information related to the first preamble or second information related to the first CG UL channel resource. One or more processors (102) can transmit at least one CG UL channel to a base station through one or more transceivers (106) based on the first CG UL channel resource.

[0148] Furthermore, one or more memories (104) of the first device (100) may store instructions for performing the method described in the example of FIG. 7 or the examples described below when executed by one or more processors (102).

[0149] FIG. 8 is a diagram illustrating the process of a base station performing communication according to one embodiment of the present disclosure.

[0150] The base station can transmit common configuration information related to CG for multiple terminals to multiple terminals (S810).

[0151] Specifically, the base station can transmit common configuration information related to the CG shared by multiple terminals to multiple terminals. Since the configuration of the common configuration information has been explained with reference to FIG. 7, a redundant explanation will be omitted.

[0152] A base station can receive a first preamble for a first CG UL channel resource among a plurality of CG UL channel resources based on common configuration information from a first terminal among a plurality of terminals (S820). For example, the base station can identify that the first CG UL channel resource corresponding to the ID of the first preamble is associated with the first terminal.

[0153] The base station may transmit a response message to the first terminal that includes at least one of the first information related to the first preamble or the second information related to the first CG UL channel resource (S830).

[0154] For example, a base station may transmit a first DCI scrambled with CRC by RA-RNTI or G(group)-RNTI to a first terminal. The base station may transmit an acknowledgment message to the first terminal via a PDSCH scheduled by the first DCI.

[0155] The base station can receive at least one CG UL channel from the first terminal based on the first CG UL channel resource (S840).

[0156] The method described in the example of FIG. 8 can be performed by the second device (200) of FIG. 9. That is, the base station of FIG. 8 can be implemented by the second device (200) of FIG. 9. For example, one or more processors (202) of the second device (200) of FIG. 9 can transmit common configuration information related to CG for a plurality of terminals to a plurality of terminals through one or more transceivers (206). One or more processors (202) can receive a first preamble for a first CG UL channel resource among a plurality of CG UL channel resources based on the common configuration information from a first terminal among the plurality of terminals through one or more transceivers (206). One or more processors (202) can transmit an acknowledgment message containing at least one of first information related to the first preamble or second information related to the first CG UL channel resource to the first terminal through one or more transceivers (206). One or more processors (202) can receive at least one CG UL channel from the first terminal through one or more transceivers (206) based on the first CG UL channel resource.

[0157] Furthermore, one or more memories (204) of the second device (200) may store instructions for performing the method described in the example of FIG. 9 or the examples described below when executed by one or more processors (202).

[0158] In the following, specific details will be provided regarding a method for a base station to allocate CG radio resources to a terminal, a method for receiving and transmitting CG resources, a method for transmitting a HARQ-ACK response for the result of receiving CG PDSCH, a method for receiving the base station's retransmission DCI via PDCCH, and a method for a terminal to transmit signals and / or channels to the base station to indicate its capability information and / or service requirements.

[0159] At least one method among the embodiments described below may be selected and / or combined. Each method may operate independently without separate combination, or one or more methods may be combined and operated in an interconnected manner. Some terms, symbols, sequences, etc. used for describing the invention may be replaced with other terms, symbols, sequences, etc., as long as the principles of the invention are maintained.

[0160] Example 1

[0161] Example 1 relates to a method for transmitting a preamble and a CG PUSCH together when a plurality of terminals share a CG PUSCH (e.g., a CG PUSCH resource) for a CG-SDT (small data transmission) operation. Here, the CG-SDT operation may include an operation in which a terminal periodically utilizes a quasi-radio resource allocated by a base station in advance to transmit data without maintaining an RRC connection state (e.g., an RRC_INACTIVE state or an RRC_IDLE state).

[0162] As an example of the present disclosure, when the uplink (UL) is in an unsynchronous state, the terminal may transmit the preamble and CG PUSCH together to the base station.

[0163] Here, the UL asynchronous state may include a state in which the TA (Timing Advance) timer, which indicates the validity period of the TA value received by the terminal from the base station, is not operating. The TA timer may include a timer used by the terminal to maintain time synchronization with the base station. When the TA timer is operating, the terminal can maintain reception timing by adjusting the UL transmission time to match the TA value. In the UL asynchronous state, time synchronization may not be guaranteed because the terminal does not currently have a valid TA value or the validity period of the TA value has expired. In this case, the terminal may transmit a preamble (e.g., preamble ID, etc.) and a CG PUSCH together to the base station.

[0164] For example, the preamble ID may be set differently for each terminal or CG setting. The terminal may randomly re-select the preamble ID for each CG PUSCH transmission.

[0165] In one embodiment of the present disclosure, when the UL synchronous state is active (e.g., when the TA timer is active), the terminal may transmit only the CG PUSCH to the base station without a preamble. However, this is merely one embodiment, and when the UL synchronous state is active, the terminal may transmit the preamble and the CG PUSCH together to the base station, just as in the UL asynchronous state.

[0166] The terminal can transmit a preamble and a CG PUSCH to a base station based on the method according to Example 1-1 or / and Example 1-2.

[0167] Example 1-1

[0168] Example 1-1 relates to a method in which a terminal transmits a preamble and a CG PUSCH immediately in succession.

[0169] As an example of the present disclosure, the slot in which the preamble is transmitted may occur / allocate / set prior to a CG PUSCH occasion (e.g., time / frequency resources in which the CG PUSCH is transmitted).

[0170] For example, a gap of a certain k slots (where k is an integer greater than or equal to 0) may occur / set between the preamble transfer slot and the subsequent CG PUSCH opportunity.

[0171] As another example, preamble transmission slots and CG PUSCH opportunities may be separately allocated / configured by a base station, and a terminal may select a specific preamble transmission slot to transmit a preamble and select the CG PUSCH opportunity closest to the specific preamble transmission slot. The terminal may perform a CG PUSCH transmission at the selected CG PUSCH opportunity.

[0172] The preamble and CG PUSCH transmission structure described above can be configured / defined similarly to a 2-step random access procedure (e.g., the MSG(message) A preamble and PUSCH transmission procedure of a terminal).

[0173] Here, in the case of a 2-step random access procedure, the terminal may transmit Msg A, which includes a PRACH preamble and uplink data, to the base station at a single transmission time. After the base station receives Msg A, it may transmit Msg B to the terminal. Msg B may include Random Access Response (RAR) information, contention resolution information, uplink resource allocation information, etc. The transmission operation of the preamble and CG PUSCH described above may be similar to the operation of transmitting Msg A in a 2-step random access procedure.

[0174] At this time, CG PUSCH may include a MAC CE or a piggybacked UCI, and the MAC CE or piggybacked UCI may include a terminal ID.

[0175] In the case where Example 1-1 applies, it is assumed that a terminal that has transmitted a preamble and a CG PUSCH receives a response to the preamble from a base station (e.g., a MAC CE included in a DCI or PDSCH). If the response transmitted by the base station includes at least one of the terminal ID of the terminal, the ID of the preamble, or the CG setting index of the CG PUSCH, the terminal determines that the TB transmission of the CG PUSCH was successful and may not retransmit the TB.

[0176] For example, if a base station response is not received for a certain period of time, or if the base station response does not include the UE ID of the terminal, the ID of the preamble or / and the CG setting index of the CG PUSCH, the terminal may determine that the TB transmission of the CG PUSCH has failed and attempt to retransmit the TB. To attempt to retransmit the TB, the terminal may attempt to detect the preamble transmission of other terminals again and perform the transmission of the preamble and CG PUSCH. Additionally or alternatively, the TB retransmission may be performed by transmitting the preamble and CG PUSCH consecutively according to a 2-step based method at the next preamble resource location without attempting to detect the preamble transmission of other terminals.

[0177] Examples 1-2

[0178] Example 1-2 relates to a method in which a terminal transmits a CG PUSCH to a base station upon receiving an MSG2. Specifically, the terminal may first transmit a preamble to the base station. The terminal may receive an MSG2 from the base station in response to the preamble. At this time, the MSG2 may include TA and time distribution information. The terminal may transmit a CG PUSCH to the base station upon receiving the MSG2.

[0179] Here, MSG2 may be transmitted to a terminal based on a DCI CRC-scraminated by a random access (RA)-RNTI or a group RNTI. For example, the terminal may receive a DCI CRC-scraminated by a random access (RA)-RNTI or a group RNTI from a base station. The terminal may receive MSG2 from a base station via a PDSCH scheduled by the DCI. However, this is merely one embodiment, and MSG2 may be included in a DCI CRC-scraminated by a random access (RA)-RNTI or a group RNTI.

[0180] For example, the MAC CE of a DCI or a PDSCH scheduled / directed by a DCI may include a RAPID (RA preamble ID) and a specific CG index (e.g., an index of a specific CG setting or / and an index of a specific CG resource, etc.). For example, if MSG2 includes a preamble ID (e.g., if MSG2 includes a RAPID corresponding to the preamble ID transmitted by the terminal), the terminal may perform a specific CG PUSCH transmission. In this case, the specific CG PUSCH transmission may be performed based on the specific CG index. For another example, if MSG2 does not include a preamble ID (e.g., if MSG2 does not include a RAPID corresponding to the preamble ID transmitted by the terminal), the terminal may not perform a specific CG PUSCH transmission.

[0181] At this time, the resource for a specific CG PUSCH transmission may include a CG PUSCH transmission resource associated with a preamble ID (e.g., a preamble ID and / or RAPID transmitted by the terminal to the base station) or corresponding to a specific CG index indicated by MSG2.

[0182] The terminal can transmit data to the base station through a CG PUSCH resource corresponding to the CG index (indicated by MSG2). At this time, the CG PUSCH may include a MAC CE or a piggybacked UCI, and the MAC CE or the piggybacked UCI may include a terminal ID.

[0183] Here, the MAC PDU transmitted via CG PUSCH may include a MAC CE containing a UE ID (e.g., a MAC CE associated with C-RNTI). The base station may transmit a CRC-scrambled DCI with the corresponding UE ID (e.g., C-RNTI) to the terminal, and the terminal may determine that contention resolution is complete through the DCI.

[0184] When Example 1-2 is applied, it is assumed that the terminal that transmitted the preamble receives a response to the preamble from the base station (e.g., MAC CE included in DCI or PDSCH). If the response transmitted by the base station includes the UE ID of the terminal and / or the ID of the preamble, the terminal may transmit a CG PUSCH to the base station based on the CG PUSCH resource mapped to the preamble. As another example, the terminal may transmit a CG PUSCH to the base station based on the CG PUSCH resource corresponding to the CG setting index indicated by the base station response. If the terminal does not receive a base station response for a certain period of time or if the base station response does not indicate the terminal ID of the terminal, the terminal may attempt to detect preamble transmissions from other terminals again and transmit the preamble, or perform preamble transmission at the next preamble resource location without attempting to detect preamble transmissions from other terminals.

[0185] Examples 1-3

[0186] In one embodiment of the present disclosure, when Example 1-1 and / or Example 1-2 is applied, it is assumed that there are multiple terminals sharing resources / settings (e.g., preamble transmission resources or / and CG PUSCH resources / settings, etc.). In this case, preamble transmission resources may be allocated via TDM, and each terminal may monitor the corresponding preamble transmission resources.

[0187] For example, if the transmission of preambles by other terminals is not detected for a certain period of time, the terminal may transmit a preamble to the base station according to a 4-step method, or transmit a preamble and a CG PUSCH to the base station in succession according to a 2-step method. For example, if the transmission of preambles by other terminals is not detected from the nk-th preamble resource location to the n-1-th preamble resource location, the terminal may transmit a preamble according to a 4-step method at the n-th preamble resource location, or transmit a preamble and a CG PUSCH in succession according to a 2-step method.

[0188] For example, assume a case where a response to a preamble is not received from the base station. In this case, the terminal may attempt to detect preamble transmissions from other terminals again. If preamble transmissions from other terminals are not detected from the mp-th preamble resource location to the m-1-th preamble resource location, the terminal may transmit a preamble to the base station according to a 4-step based method at the m-th preamble resource location, or transmit a preamble and CG PUSCH consecutively to the base station according to a 2-step based method.

[0189] Additionally or alternatively, if the terminal does not receive a response to the preamble from the base station, the terminal may not attempt to detect the transmission of the preamble from other terminals, and may transmit the preamble to the base station according to a 4-step based method at the m-th preamble location or the n+q-th preamble resource location, or transmit the preamble and CG PUSCH consecutively to the base station according to a 2-step based method.

[0190] One or a combination of the options described below may be considered in a manner in which multiple terminals select the nth preamble resource location among multiple TDMed preamble transmission resources according to the preamble transmission detection result described above.

[0191] Option 1

[0192] All terminals may select all preamble resource locations, including the n-th preamble resource location, based on the preamble transmission detection result. For example, if no preamble transmissions by other terminals are detected from the nk-th preamble resource location to the n-1-th preamble resource location, the terminal may transmit a preamble (and / or a CG PUSCH mapped to the preamble) from the n-th preamble resource location to the base station. Here, k may be a value specified / set by the base station or the number of terminals sharing the same CG PUSCH setting.

[0193] Option 2

[0194] A specific terminal may perform a preamble transmission operation only at a specific preamble resource location according to the preamble transmission detection result above. That is, the nth preamble resource location may be allocated / mapped so that only a specific terminal can select it. The operation described above may be performed according to Option 2-1 and / or Option 2-2 described below.

[0195] Option 2-1

[0196] As an example of the present disclosure, k preamble opportunities that are TDMed for every C CG PUSCH occasions for the same CG PUSCH setting may be allocated in priority (by the base station). Herein, k is the total number of terminals sharing the CG PUSCH setting, and C is an integer greater than or equal to 1.

[0197] For example, when k is 4 (e.g., when terminal #0, terminal #1, terminal #2, and terminal #3 share a single CG configuration), each of the four preamble opportunities prioritizing every C CG PUSCH opportunities may be assigned to terminal #0, terminal #1, terminal #2, and terminal #3. In this case, the terminal assigned to the first preamble opportunity (e.g., terminal #0) may transmit the C CG PUSCH opportunities mapped to the first preamble opportunity without needing to detect the preamble transmission of other terminals (e.g., when uplink data is stored in a buffer). In describing the present disclosure, the operation of transmitting a CG PUSCH opportunity may include the operation of transmitting data (e.g., data included in the CG PUSCH) in the CG PUSCH opportunity.

[0198] Additionally, assume that uplink data of terminals (e.g., terminal #1, terminal #2, and terminal #3) corresponding to the second, third, and fourth preamble opportunities, respectively, is stored in a buffer. In this case, if no preamble transmission is detected in all preamble opportunities prior to the first preamble opportunity, the terminals corresponding to the third and fourth preamble opportunities, respectively, may transmit C CG PUSCH opportunities mapped to the allocated / transmitted preamble opportunity.

[0199] For example, terminal #1 may transmit C CG PUSCH opportunities mapped to the second preamble opportunity if the preamble transmission of terminal #0 is not detected in the first preamble opportunity. Terminal #2 may transmit C CG PUSCH opportunities mapped to the third preamble opportunity if the preamble transmissions of terminal #0 and terminal #1 are not detected in both the first and second preamble opportunities.

[0200] In one example of the present disclosure, when k preamble opportunities that are TDMed are allocated in priority for every C CG PUSCH opportunities, the terminals mapped to the k preamble opportunities may be fixed or changed. In this case, an opportunity index is assigned to each preamble opportunity that is TDMed, and a modular operation may be performed on the opportunity index using the number of terminals. A terminal corresponding to the result of the modular operation may be assigned to the corresponding opportunity index.

[0201] For example, if the terminals mapped to k preamble opportunities are fixed, the terminals can be mapped in the same pattern for every k preamble opportunities. For example, if k is 4 and the corresponding mapping is fixed, four preamble opportunities prioritizing every C CG PUSCH opportunities can be assigned to each terminal (e.g., Terminal #0, Terminal #1, Terminal #2, and Terminal #3) each time. In this case, the assignment to the terminal can be performed based on the result of the modular operation. For example, if the opportunity index value is 4, the corresponding opportunity index can be assigned to Terminal #0 according to the modular operation value (e.g., 4 mod 4 = 0). As another example, if the opportunity index value is 5, the corresponding opportunity index can be assigned to Terminal #1 according to the modular operation value (e.g., 5 mod 4 = 1).

[0202] As another example, if the terminal mapped to k preamble opportunities changes, the mapping pattern for each k preamble opportunity may change. For example, if the value of k is 4 and the corresponding mapping changes, the four preamble opportunities prioritizing the first C CG PUSCH opportunities may be assigned to Terminal #0, Terminal #1, Terminal #2, and Terminal #3, respectively. The four preamble opportunities prioritizing the second C CG PUSCH opportunities may be assigned to Terminal #0, Terminal #1, Terminal #2, and Terminal #3, respectively. The four preamble opportunities prioritizing the third C CG PUSCH opportunities may be assigned to Terminal #0, Terminal #1, Terminal #2, and Terminal #3, respectively. That is, the mapping method may change according to the method described above.

[0203] In one example of the present disclosure, the value of C may be a value set / instructed by a base station or may be indicated through a preamble transmitted by a terminal. For example, if terminal #1 transmits a preamble ID corresponding to C=3 to a base station, terminal #1 may transmit data through three CG PUSCH opportunities after transmitting the preamble.

[0204] Option 2-2

[0205] For convenience of explanation of the present disclosure, if a preamble opportunity is denoted as PO and a CG PUSCH opportunity is denoted as CO, an example of a resource structure of P POs and C COs set for P terminals is as follows:

[0206] - PO#0 -> gap -> PO#1 -> gap -> … -> PO#P-2 -> gap [-> PO#P-1 -> gap] -> CO#0 ~ CO#C-1 (e.g., CO group #0); and / or

[0207] - PO#0 -> gap -> PO#1 -> gap -> … PO#P-2 -> gap [-> PO#P-1 -> gap] -> CO#0 ~ CO#C-1 (e.g., CO group #1).

[0208] In one example of the present disclosure, in the case of CO group #0 transmission, if the CO group index value is 0, each terminal can be assigned to PO#0 to PO#P-1 sequentially starting from terminal #0 according to a modular operation (e.g., 0 mod P = 0). That is, terminal #0, terminal #1, ..., terminal #P-1 can each be assigned to PO#0 to PO#P-1 sequentially.

[0209] When the above-described method is applied, if a terminal assigned to PO #0 (e.g., terminal #0) has data to transmit, the terminal can transmit a preamble from PO #0 immediately without LBT operation and then perform data transmission using CO group #0.

[0210] Afterwards, the terminal assigned to PO #n (n>0) (e.g., terminal #n) can perform LBT from PO #0 to PO #n-1. If the preamble of another terminal (e.g., energy associated with the preamble) is not detected according to the LBT, terminal #n can perform preamble transmission at PO #n. Then, terminal #n can perform data transmission using CO group #0.

[0211] Here, LBT refers to a procedure in which a transmitting entity (for example, in an unlicensed frequency band) detects the channel for a certain period before initiating data transmission to determine whether the channel is in use. In other words, by allowing transmission only when the channel is empty, the transmitting end minimizes collisions with other systems or terminals using the same frequency, and enables multiple users to access the channel equally through measures such as random backoff and detection thresholds.

[0212] The terminal assigned to the last PO #P-1 (e.g., terminal #P-1) may (exceptionally) perform LBT from PO #0 to PO #n-1. If no preamble from another terminal is detected according to the LBT, terminal #P-1 may perform a transmission in CO group #0 without transmitting a preamble.

[0213] In another example of the present disclosure, for CO group #1 transmission, if the CO group index is 1, each terminal from terminal #1 can be assigned to PO #0 to PO #P-1 according to a modular operation (e.g., 1 mod P = 1). That is, terminal #1, terminal #2, ..., terminal #P-1 and terminal #0 can be assigned sequentially to PO #0, PO #1, ..., PO #P-1.

[0214] When the above-described method is applied, if a terminal assigned to PO #0 (e.g., terminal #1) has data to transmit, the terminal can transmit a preamble from PO #0 immediately without LBT operation and then perform data transmission using CO group #1.

[0215] Afterwards, the terminal assigned to PO #n (n>0) (e.g., terminal #n) can perform LBT from PO #0 to PO #n-1. If the preamble of another terminal (e.g., energy associated with the preamble) is not detected according to the LBT, terminal #n can perform preamble transmission at PO #n. Then, terminal #n can perform data transmission using CO group #1.

[0216] The terminal assigned to the last PO #P-1 (e.g., terminal #0) may (exceptionally) perform LBT from PO #0 to PO #n-1. If no preamble from another terminal is detected during the LBT, that terminal may perform a transmission in CO group #1 without transmitting a preamble.

[0217] Subsequently, if the CO group number / index is changed to a different value (e.g., #2, #3, #4, etc.), the location of the PO for each terminal may also be changed, and each terminal may repeat the operations described above at the changed location.

[0218] As described above, the terminal that transmitted the preamble (e.g., terminal #m) may i) occupy / use all CO(s) belonging to the subsequent CO group, and / or ii) notify the base station via the preamble of the number of CO(s) to occupy / use within the said CO group. If the method according to i) is applied, terminals after terminal #m may abandon transmission based on the said CO group and attempt transmission based on the next CO group. If the method according to ii) is applied, terminals after terminal #m may also attempt to occupy the remaining resources (e.g., excluding the resources occupied by terminal #m).

[0219] Option 3

[0220] In one example of the present disclosure, an index may be assigned to each TDM-controlled preamble opportunity, and the specific opportunity index may be preferentially assigned to a terminal corresponding to a modular operation value (e.g., i mod k) based on the number of terminals (k) for a specific opportunity index (i). In another example, an opportunity index may be assigned to each CG PUSCH opportunity, and the same opportunity index value may be assigned to preamble opportunities mapped to the CG PUSCH opportunity.

[0221] For example, assume a case where multiple terminals (e.g., Terminal #0, Terminal #1, Terminal #2, and Terminal #3) share each resource / setting according to the method described above.

[0222] At this time, when the opportunity index value is 4, the opportunity index may be assigned to a terminal (e.g., terminal #0) corresponding to the terminal number-based modular operation value for the opportunity index (e.g., 4 mod 4 = 0). If no preamble transmission of terminal terminals is detected in opportunity indices 0, 1, 2 and 3, terminal #0 may perform a preamble transmission at the preamble opportunity corresponding to opportunity index 4.

[0223] As another example, when the opportunity index value is 5, the opportunity index may be assigned to a terminal (e.g., terminal #1) corresponding to the terminal count-based modular operation value (e.g., 5 mod 4 = 1) for the opportunity index. If no preamble transmission of terminal terminals is detected in opportunity indices 1, 2, 3 and 4, terminal #0 may perform a preamble transmission at the preamble opportunity corresponding to opportunity index 4.

[0224] As another example, when the opportunity index value is 6, the opportunity index may be assigned to a terminal (e.g., terminal #2) corresponding to the terminal-count-based modular operation value for the opportunity index (e.g., 6 mod 4 = 2). If no preamble transmission of terminal terminals is detected in opportunity indices 2, 3, 4 and 5, terminal #2 may perform a preamble transmission at the preamble opportunity corresponding to opportunity index 6.

[0225] As another example, when the opportunity index value is 7, the opportunity index may be assigned to a terminal (e.g., terminal #3) corresponding to the terminal-count-based modular operation value for the opportunity index (e.g., 7 mod 4 = 3). If no preamble transmission of terminal terminals is detected in opportunity indices 3, 4, 5 and 6, terminal #3 may perform a preamble transmission at the preamble opportunity corresponding to opportunity index 7.

[0226] In the method described above, the first four preamble transmission sequences may be set / defined in the order of terminal #0, terminal #1, terminal #2, and terminal #3, but the next four preamble transmission sequences may be set / defined in the order of terminal #1, terminal #2, terminal #3, and terminal #0. And, the next four preamble transmission sequences may be set / defined in the order of terminal #2, terminal #3, terminal #0, and terminal #1.

[0227] According to various embodiments of the present disclosure, a single CG PUSCH can be set for a plurality of terminals, and accordingly, resources can be utilized more efficiently.

[0228] General devices to which the present disclosure may be applied

[0229] FIG. 9 illustrates a block diagram of a wireless communication device according to one embodiment of the present disclosure.

[0230] Referring to FIG. 9, the first device (100) and the second device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).

[0231] The 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 memory (104) and / or transceivers (106) and may be configured to implement the descriptions, functions, procedures, proposals, methods and / or sequences of operation disclosed in this disclosure.

[0232] For example, the processor (102) can process information within the memory (104) to generate a first information / signal and then transmit a wireless signal containing the first information / signal through the transceiver (106). Additionally, the processor (102) can receive a wireless signal containing a second information / signal through the transceiver (106) and then store information obtained from the signal processing of the second information / signal in the memory (104).

[0233] 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 store software code containing instructions for performing some or all of the processes controlled by the processor (102) or for performing the descriptions, functions, procedures, proposals, methods, and / or sequences of operation disclosed in this disclosure. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals through one or more antennas (108). The transceiver (106) may include a transmitter and / or receiver. The transceiver (106) may be combined with an RF (Radio Frequency) unit. In the present disclosure, the device may refer to a communication modem / circuit / chip.

[0234] The second device (200) includes one or more processors (202) and one or more memories (204), and may additionally include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memory (204) and / or transceivers (206) and may be configured to implement the descriptions, functions, procedures, proposals, methods and / or sequences of operation disclosed in this disclosure. For example, the processor (202) may process information within the memory (204) to generate a third information / signal and then transmit a wireless signal containing the third information / signal through the transceiver (206). Additionally, the processor (202) may receive a wireless signal containing a fourth information / signal through the transceiver (206) and then store information obtained from the signal processing of the fourth information / signal in the memory (204). Memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, memory (204) may store software code including instructions for performing some or all of the processes controlled by the processor (202) or for performing the descriptions, functions, procedures, proposals, methods, and / or sequences of operation disclosed in this disclosure. Here, the processor (202) and memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). A transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals through one or more antennas (208). The transceiver (206) may include a transmitter and / or receiver. The transceiver (206) may be interchangeable with an RF unit. In this disclosure, the term "device" may refer to a communication modem / circuit / chip.

[0235] Hereinafter, 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 Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this 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 flowcharts of operation disclosed in this disclosure. One or more processors (102, 202) may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this disclosure and provide it to one or more transceivers (106, 206). One or more processors (102, 202) may receive a signal (e.g., a baseband signal) from one or more transceivers (106, 206) and may obtain a PDU, SDU, message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts disclosed in this disclosure.

[0236] One or more processors (102, 202) may be referred to as a controller, microcontroller, microprocessor, or 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 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. Firmware or software configured to perform the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this disclosure may be included in one or more processors (102, 202) or stored in one or more memories (104, 204) and driven by one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this disclosure may be implemented using firmware or software in the form of code, instructions, and / or sets of instructions.

[0237] One or more memories (104, 204) may be connected to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories (104, 204) may be composed of ROM, RAM, EPROM, flash memory, hard drive, registers, cache memory, computer read storage media, and / or combinations thereof. One or more memories (104, 204) may be located inside and / or outside of one or more processors (102, 202). Additionally, one or more memories (104, 204) may be connected to one or more processors (102, 202) through various technologies such as wired or wireless connections.

[0238] One or more transceivers (106, 206) may transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or operation flowcharts, etc., of the present disclosure to one or more other devices. One or more transceivers (106, 206) may receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or operation flowcharts, etc., disclosed in the present disclosure from one or more other devices. For example, one or more transceivers (106, 206) may be connected to one or more processors (102, 202) and may transmit and receive wireless signals. For example, one or more processors (102, 202) may 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 connected 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, etc., as described in the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this disclosure through one or more antennas (108, 208). In this disclosure, one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert the received wireless signal / channel, etc. from an RF band signal to a baseband signal in order to process the received user data, control information, wireless signal / channel, etc. using one or more processors (102, 202).One or more transceivers (106, 206) can convert user data, control information, wireless signals / channels, etc. processed using one or more processors (102, 202) from baseband signals to RF band signals. To this end, one or more transceivers (106, 206) may include (analog) oscillators and / or filters.

[0239] The embodiments described above are combinations of the components and features of the present disclosure in a specific form. Each component or feature should be considered optional unless otherwise explicitly stated. Each component or feature may be implemented in a form not combined with other components or features. Additionally, it is possible to construct 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 obvious that embodiments may be constructed by combining claims that are not explicitly related in the claims, or that they may be included as new claims by amendment after filing.

[0240] It is obvious to those skilled in the art that the present disclosure may be embodied in other specific forms without departing from the essential features of the present disclosure. Accordingly, the detailed description set forth above should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the present disclosure shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present disclosure are included within the scope of the present disclosure.

[0241] The scope of the present disclosure includes software or machine-executable instructions (e.g., operating systems, applications, firmware, programs, etc.) that enable operations according to the methods of various embodiments to be executed on a device or computer, and a non-transitory computer-readable medium on which such software or instructions, etc. are stored and executable on a device or computer. Instructions that may be used to program a processing system to perform the features described in the present disclosure may be stored on or within a storage medium or a computer-readable storage medium, and the features described in the present disclosure may be implemented using a computer program product comprising such a storage medium. The storage medium may 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 may 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 may optionally include one or more storage devices located remotely from the processor(s). Memory or alternatively, non-volatile memory device(s) within memory comprises a non-transient computer-readable storage medium. The features described in this disclosure may be stored in any one of the machine-readable media and integrated into software and / or firmware that can control the hardware of a processing system and allow the processing system to interact with other mechanisms utilizing results according to the embodiments of this disclosure. Such software or firmware may include, but is not limited to, application code, device drivers, operating systems, and execution environments / containers.

[0242] Here, the wireless communication technology implemented in the device (100, 200) of the present disclosure may include LTE, NR, and 6G, as well as Narrowband Internet of Things for low-power communication. In this case, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented according to standards such as LTE Cat NB1 and / or LTE Cat NB2, but is not limited to the names mentioned above. Additionally or generally, the wireless communication technology implemented in the device (100, 200) of the present disclosure may perform communication based on LTE-M technology. In this case, for example, LTE-M technology may be an example of LPWAN technology and may be referred to by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology may be implemented in 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 names mentioned above. Additionally or generally, wireless communication technology implemented in the device (100, 200) of the present disclosure may include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) for low-power communication, and is not limited to the names mentioned above. As an example, ZigBee technology may create personal area networks (PANs) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and may be referred to by various names.

[0243] Although the method proposed in this disclosure has been described with an example applied to 3GPP LTE / LTE-A and 5G systems, it can be applied to various wireless communication systems in addition to 3GPP LTE / LTE-A and 5G systems.

Claims

1. A step of receiving common configuration information related to a configured grant (CG) for a plurality of terminals including the first terminal from a base station by the first terminal; A step of transmitting a first preamble for a first CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the above common setting information to the base station by the first terminal; A step of receiving a response message from the base station by the first terminal, the message including at least one of first information related to the first preamble or second information related to the first CG UL channel resource; and A method comprising the step of transmitting at least one CG UL channel to the base station by the first terminal based on the first CG UL channel resource.

2. In Paragraph 1, A method comprising at least one of the first information, wherein the first information comprises an identifier (ID) value associated with the first preamble or identification information of the first terminal that transmitted the first preamble.

3. In Paragraph 1, A method wherein the second information comprises at least one of the index of the first CG UL channel resource or the index of the common setting information.

4. In Paragraph 1, A method in which each of the above plurality of CG UL channel resources is mapped to an individual preamble ID.

5. In Paragraph 1, The above response message is transmitted to the terminal via a physical downlink shared channel (PDSCH), and The above PDSCH is a method in which it is scheduled by first downlink control information (DCI) that is scrambled by a cyclic redundancy check (CRC) by a random access (RA) radio network temporary identifier (RNTI) or a group RNTI.

6. In Paragraph 1, The above-mentioned at least one CG UL channel comprises at least one medium access control (MAC) protocol data unit (PDU), and A method in which at least one MAC PDU comprises identification information of the first terminal.

7. In Paragraph 1, A method in which, based on the fact that the preamble transmission of the remaining terminals excluding the first terminal among the plurality of terminals is not performed during the n-1st preamble opportunity from the n-kth preamble opportunity, the first preamble is transmitted to the base station at the nth preamble opportunity.

8. In Paragraph 6, A second DCI, CRC-scrambed by a cell-RNTI associated with the identification information of the first terminal, is transmitted from the base station to the terminal, and A method in which contention resolution is completed based on the above second DCI.

9. In Paragraph 7, A measurement operation for the first frameable transmission is performed by the remaining terminal above, and A method in which, based on the result of the above measurement operation satisfying a predefined condition, a preamble transmission is attempted by the remaining terminal at the n+1th frameable opportunity.

10. In Paragraph 1, A method in which the first terminal is in a radio resource control (RRC) inactive state or an RRC idle state.

11. One or more transceivers; and It includes one or more processors connected to the above one or more transmitters and receivers, and The above one or more processors are: Receiving common configuration information related to a configured grant (CG) for a plurality of terminals including a first terminal from a base station through the one or more transceivers; Transmitting a first preamble for a first CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the above common setting information to the base station through the one or more transceivers; Receiving a response message from the base station through the one or more transceivers that includes at least one of first information related to the first preamble or second information related to the first CG UL channel resource; and A first terminal configured to transmit at least one CG UL channel to a base station through one or more transceivers based on the first CG UL channel resource.

12. A step of transmitting common configuration information related to a configured grant (CG) for a plurality of terminals to the plurality of terminals by a base station; A step of receiving, by the base station, a first preamble for a first CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the above common setting information from a first terminal among the plurality of terminals; A step of transmitting a response message containing at least one of first information related to the first preamble or second information related to the first CG UL channel resource to the first terminal by the base station; and A method comprising the step of receiving at least one CG UL channel from the first terminal by the base station based on the first CG UL channel resource.

13. One or more transceivers; and It includes one or more processors connected to the above one or more transmitters and receivers, and The above one or more processors are: Common configuration information related to a configured grant (CG) for a plurality of terminals is transmitted to the plurality of terminals through the one or more transceivers; Receiving a first preamble for a first CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the above common setting information from a first terminal among the plurality of terminals through the one or more transceivers; Transmitting a response message containing at least one of first information related to the first preamble or second information related to the first CG UL channel resource to the first terminal through the one or more transceivers; and A base station configured to receive at least one CG UL channel from the first terminal through the one or more transceivers based on the first CG UL channel resource.

14. In a processing device, the processing device comprises: One or more processors; and A processing device comprising one or more computer memories that are operably connected to one or more processors and store instructions for performing a method according to any one of claims 1 to 10 based on execution by one or more processors.

15. One or more non-transitory computer-readable media storing one or more instructions, A computer-readable medium in which one or more of the above instructions are executed by one or more processors to control the device to perform a method according to any one of claims 1 to 10.

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