Method and device for performing configured grant-based transmission / reception operations 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) for a plurality of terminals including the first terminal; transmits, to the base station, first information related to at least one 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, control information related to the at least one CG UL channel resource; and transmits a CG UL channel to the base station through the at least one CG UL channel resource on the basis of the control information.

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.

[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 first information related to at least one 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 control information related to the at least one CG UL channel resource from the base station by the first terminal; and transmitting a CG UL channel through the at least one CG UL channel resource to the base station by the first terminal based on the control information.

[0008] A method according to another embodiment of the present disclosure comprises: 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 first information related to at least one CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the common configuration information by the base station from a first terminal among the plurality of terminals; transmitting control information related to the at least one CG UL channel resource to the first terminal by the base station; and receiving a CG UL channel from the first terminal by the base station through the at least one CG UL channel resource based on the control information.

[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] By various embodiments of the present disclosure, a method and apparatus for sharing and transmitting / receiving CG-based resources shared by a plurality of terminals 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] FIG. 2 is an example of the case where μ=2 (SCS is 60kHz), and referring to Table 3, one subframe can contain four slots. The slots in the one subframe={1,2,4} shown in FIG. 2 are examples, 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.

[0085] Below, the aforementioned physical resources that can be considered in an NR system are examined in detail. First, regarding 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.

[0086] 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 domain RB 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 NRB 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.

[0087] 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.

[0088] Point A serves as a common reference point for the resource block grid and is acquired as follows.

[0089] - 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.

[0090] - absoluteFrequencyPointA represents the frequency-location of point A as expressed in ARFCN (absolute radio-frequency channel number).

[0091] 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 μ The relationship between the resource element (k,l) and the subcarrier spacing setting μ is given as Equation 1 below.

[0092]

[0093] 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.

[0094]

[0095] N BWP,i start,μ is a common resource block where BWP starts relative to common resource block 0.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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).

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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).

[0105] 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.

[0106] 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.

[0107] 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.

[0108] Table 5 shows an example of the DCI format in an NR system.

[0109] 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

[0110] 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.

[0111] 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).

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] CG (configured grant) based transmission and reception operation

[0119] 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.

[0120] 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.

[0121] 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).

[0122] 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.

[0123] 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.

[0124] 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).

[0125] 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).

[0126] 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.

[0127] FIG. 7 is a diagram illustrating the process of a first terminal performing communication according to one embodiment of the present disclosure.

[0128] 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).

[0129] 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.

[0130] 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, or information related to the demodulation reference signal (DMRS) sequence of each of a plurality of terminals.

[0131] 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.

[0132] The first terminal can transmit first information related to at least one CG UL channel resource among a plurality of CG uplink (UL) channel resources based on common setting information to a base station (S720).

[0133] As an example of the present disclosure, it is assumed that a plurality of CG UL channel resources are configured (for a plurality of terminals) by common configuration information. For example, a plurality of terminals may share a plurality of CG UL channel resources. In this case, the first terminal may transmit first information related to the plurality of CG UL channels to a base station through uplink control information (UCI) or a first medium access control (MAC) control element (CE).

[0134] For example, the first information may include at least one of an identifier of common configuration information, an identifier of at least one CG UL channel resource, or an occupancy status of at least one CG UL channel resource.

[0135] Specifically, when uplink data to be transmitted is stored in a buffer, the first terminal #1 can identify that CG UL channel transmission based on at least one CG UL channel resource is required based on the size of the uplink data contained in the buffer. Accordingly, the first terminal can transmit at least one of the identifier of common configuration information, the identifier of at least one CG UL channel resource, or the occupancy status of at least one CG UL channel resource to the base station, the UCI or the first MAC CE.

[0136] The first terminal can receive control information related to at least one CG UL channel resource from the base station (S730).

[0137] For example, control information can be transmitted from a base station to a terminal via downlink control information (DCI) or a second MAC CE.

[0138] For example, when control information is transmitted to a terminal via a DCI, the DCI may be scrambled by a cyclic redundancy check (CRC) by a cell (C) radio network temporary identifier (RNTI), a configured scheduling (CS) RNTI, or a group (G) RNTI. If the DCI is scrambled by a C-RNTI or a CS-RNTI, the C-RNTI or CS-RNTI may be associated with the terminal. If the DCI (e.g., a group DCI) is scrambled by a G-RNTI, the DCI may be transmitted to all of a plurality of terminals including the first terminal.

[0139] For example, when control information and / or terminal identification information of a first terminal is transmitted to the first terminal via a DCI, the DCI may be a group DCI (e.g., G(group)-RNTI, G-CS-RNTI) or a terminal-specific DCI (e.g., a DCI CRC-scraped by C-RNTI or CS-RNTI).

[0140] For example, if the DCI transmitted to the first terminal is a group DCI, the DCI can be transmitted to multiple terminals. Based on the transmission of the DCI containing the terminal identification information of the first terminal and the first information to multiple terminals, the multiple terminals can confirm that at least one CG UL channel resource is established for the first terminal. Accordingly, the transmission operation based on at least one CG UL channel resource of the remaining terminals, excluding the first terminal among the multiple terminals, can be skipped.

[0141] As another example, if the DCI transmitted to the first terminal is a terminal-specific DCI, the remaining terminals among the plurality of terminals, excluding the first terminal, may also receive individual DCIs. For example, the individual DCI transmitted to each of the remaining terminals may also include first information and identification information of the first terminal. Accordingly, at least one CG UL channel resource-based transmission operation of the remaining terminals among the plurality of terminals, excluding the first terminal, may be skipped.

[0142] In one example of the present disclosure, the control information may include at least one of an indicator related to the activation of at least one CG UL channel resource, an offset, terminal identification information of a first terminal, or ACK (acknowledgement) information regarding the occupancy status of at least one CG UL channel resource.

[0143] Additionally, terminal identification information of the first terminal may be indicated by a terminal index field (or terminal identification information field) or a bitmap. For example, the terminal index field (or terminal identification information field) included in the DCI or the second MAC CE may indicate terminal identification information of the first terminal (e.g., an identifier or index of the first terminal or / and a logical channel identifier associated with the first terminal, etc.). As another example, the DCI or the second MAC CE may include a bitmap composed of bits corresponding to each of a plurality of terminals. For example, among the bits of the bitmap, the bit value corresponding to the first terminal may be set to 1.

[0144] Additionally, at least one CG UL channel resource allocated / directed to the first terminal can be identified through the offset (k) included in the control information. For example, the at least one CG UL channel resource allocated / directed to the first terminal may include CG UL channel resources from the time of receiving the control information up to the offset. For example, if the time at which the DCI is transmitted is after the nth CG UL channel resource, the DCI may instruct other terminals to skip from the n+1th CG UL channel resource to the n+kth CG UL channel resource.

[0145] The first terminal can transmit CG UL channel(s) to the base station through at least one CG UL channel resource based on control information (S740).

[0146] Specifically, the first terminal may transmit at least one CG UL channel (e.g., CG PUSCH) to a base station through at least one CG UL channel resource directed / assigned by control information. At this time, among the plurality of terminals, the remaining terminals excluding the first terminal may not transmit at least one CG UL channel to the base station through at least one CG UL channel resource. As an example, the MAC PDU(s) included in the at least one CG UL channel transmitted by the first terminal to the base station may include terminal identification information of the first terminal.

[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 for a plurality of terminals including the first terminal from a base station through one or more transceivers (106). One or more processors (102) can transmit first information related to at least one CG UL channel resource among a plurality of CG UL channel resources based on the common configuration information from the base station through one or more transceivers (106). One or more processors (102) can receive control information related to at least one CG UL channel resource from the base station through one or more transceivers (106). One or more processors (102) can transmit a CG UL channel to a base station through one or more transceivers (106) via at least one CG UL channel resource based on control information.

[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] The base station can receive first information related to at least one CG UL channel resource among a plurality of CG uplink (UL) channel resources based on common configuration information from a first terminal among a plurality of terminals (S820).

[0153] The base station can transmit control information related to at least one CG UL channel resource to the first terminal (S830).

[0154] At this time, the control information may be transmitted to the terminal via DCI or the second MAC CE. Additionally, the base station may transmit the control information to all of the multiple terminals as well as the first terminal, and the control information may include terminal identification information of the first terminal.

[0155] Based on control information, the base station can receive a CG UL channel from a terminal through at least one CG UL channel resource (S840).

[0156] That is, the base station can receive at least one CG UL channel from the first terminal based on at least one CG UL channel.

[0157] 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 the terminals through one or more transceivers (206). One or more processors (202) can receive first information related to at least one CG UL channel resource among a plurality of CG UL channel resources based on the common configuration information from the first terminal among the plurality of terminals through one or more transceivers (206). One or more processors (202) can transmit control information related to at least one CG UL channel resource to the first terminal through one or more transceivers (206). One or more processors (202) can receive a CG UL channel from a terminal through one or more transceivers (206) via at least one CG UL channel resource based on control information.

[0158] 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).

[0159] 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.

[0160] 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.

[0161] Example 1

[0162] Example 1 relates to a method in which, when multiple terminals share the same CG settings, one of the multiple terminals occupies a CG resource through a UCI.

[0163] In one example of the present disclosure, when a plurality of terminals (e.g., terminal #1, terminal #2, terminal #3, and terminal #4) share the same CG setting, the base station may set each of the plurality of terminals to transmit a CG PUSCH through a different DMRS sequence. In this case, when the base station selects terminal #1, each terminal may perform a CG PUSCH transmission according to the steps described below.

[0164] Step 1

[0165] In one example of the present disclosure, when uplink data to be transmitted is in a buffer, terminal #1 may determine that k CG PUSCH transmissions are required based on the amount of data in the buffer. The terminal may report to the base station the occupancy of the n-th CG PUSCH resource to the n+k-th CG PUSCH resource for a specific CG setting via the UCI on the CG PUSCH. In this case, the n-th CG PUSCH resource may include the resource that transmitted the UCI or the resource indicated by the UCI. The CG setting of the CG PUSCH transmitting the UCI and the specific CG setting may be the same or different.

[0166] And, the UCI transmitted through the m-th CG PUSCH resource can indicate an offset of nm and a k value, and n can be greater than m.

[0167] For example, the reporting operation of the occupancy of the terminal's CG PUSCH resource may be performed via MAC CE instead of UCI. The reporting of the occupancy of the CG PUSCH resource may include a setting index, offset, and k, etc., corresponding to the above (specific) CG setting.

[0168] For example, the above UCI may be transmitted by being included (or embedded) in the nm-th (m is a positive integer of 1 or more) CH PUSCH for a specific CG setting, transmitted by being included (or embedded) in a CG PUSCH resource of a separate CG setting, transmitted by being included (or embedded) in a dynamic PUSCH, or transmitted through a separate PUCCH resource.

[0169] At this time, a separate CG setting or a separate PUCCH resource may be set by the base station for UCI transmission. In addition, multiple terminals (e.g., Terminal #1, Terminal #2, Terminal #3, and Terminal #4) may share the CG setting or the PUCCH resource together, but are not limited thereto. A separate CG setting or PUCCH resource may be allocated to each of the multiple terminals.

[0170] Step 2

[0171] A base station that receives a report of occupancy of CG PUSCH resources according to Step 1 may instruct other terminal(s) that have the same CG setting enabled (e.g., terminal #2, terminal #3, and terminal #4) to skip from the nth CG PUSCH resource to the n+kth CG PUSCH resource via DCI.

[0172] For example, if the time at which the DCI is transmitted is after the nth CG PUSCH resource, the base station may instruct other terminal(s) (e.g., terminal #2, terminal #3, and terminal #4) via the DCI to skip the n+1th CG PUSCH resource to the n+kth CG PUSCH resource. In this case, the DCI may instruct a specific CG setting and a value of m, and each of the other terminal(s) (e.g., terminal #2, terminal #3, and terminal #4) may not perform CG PUSCH transmission by skipping m CG PUSCH resources starting from "DCI reception time + k2".

[0173] In one example of the present disclosure, if the DCI is a terminal-specific DCI, the DCI may be CRC scrambled by a C-RNTI or CS-RNTI for each of the other terminal(s) (e.g., terminal #2, terminal #3, and terminal #4) and may indicate a skip of the CG PUSCH resource.

[0174] Meanwhile, the base station may transmit a separate DCI for terminal #1 to terminal #1, and said DCI may be CRC scrambled by C-RNTI or CS-RNTI for terminal #1. Additionally, the base station may transmit an ACK for a report of occupancy of a CG PUSCH resource received from terminal #1 to the terminal via said DCI. Additionally, or alternatively, the base station may indicate to terminal #1 via the DCI the nth CG PUSCH resource through the n+kth CG PUSCH resource, thereby allowing terminal #1 to occupy the indicated CG PUSCH resources and perform uplink transmission.

[0175] Additionally or alternatively, the base station may direct terminal #1 to the n-th CG PUSCH resources through the DCI that is CRC-scrambed by the C-RNTI or CS-RNTI for terminal #1, from the n-th CG PUSCH resource to the n+q (q is an integer greater than or less than k)-th CG PUSCH resource. The base station may determine that terminal #1 occupies only the directed resources regardless of reports related to the CG PUSCH resources.

[0176] In one example of the present disclosure, if the DCI is a group DCI, the DCI may include a terminal index for each terminal. The base station may transmit an ACK for a report of the occupancy of the CG PUSCH resource to terminal #1 through the said DCI. Additionally, the base station may indicate the occupied CG PUSCH resource through the said DCI. Thus, if the group DCI indicates terminal #1, other terminal(s) that receive the same DCI (e.g., terminal #2, terminal #3, and terminal #4) may decide to skip the CG PUSCH resource indicated through the said DCI.

[0177] For example, a group DCI may include a terminal bitmap or / and a terminal index (e.g., a field where the terminal index is set) for terminal indication, etc. Multiple terminals (e.g., Terminal #1, Terminal #2, Terminal #3, and Terminal #4) may all monitor the same group DCI. By receiving the same group DCI, the terminal(s) can identify the terminal selected by the base station and / or the skipped terminal(s).

[0178] For example, assume a case where a base station sets a 4-bit bitmap through a group DCI. For example, if the base station transmits a group DCI containing a 4-bit bitmap (e.g., "0100") to terminals #1, #2, #3, and #4, the bitmap may indicate that terminal #2 is selected and the other terminals are skipped. As another example, if the base station assigns different terminal indices to different terminals and the group DCI indicates a terminal index value corresponding to terminal #3, terminals #1, #2, #3, and #4 that receive the group DCI can confirm that terminal #3 is selected and the remaining terminals are skipped.

[0179] For example, if a specific terminal decides to skip a CG PUSCH resource, the specific terminal may not perform a transmission operation based on that CG PUSCH resource. Additionally, when calculating the HARQ process ID value for subsequent CG PUSCH transmissions, the specific terminal may calculate the HARQ process ID value excluding the skipped CG PUSCH resource.

[0180] Example 2

[0181] Example 2 relates to a method for performing CG transmission based on contention when multiple terminals share the same CG setting.

[0182] As an example of the present disclosure, it is assumed that terminal #1 and terminal #2 perform uplink transmission based on the same CG PUSCH resource. In this case, the base station may receive both (CG) PUSCH #1 of terminal #1 and (CG) PUSCH #2 of terminal #2 through spatial multiplexing, etc. As another example, the base station may receive only one of (CG) PUSCH #1 of terminal #1 and (CG) PUSCH #2 of terminal #2 due to a difference in channel / received power.

[0183] In one example of the present disclosure, when CG PUSCH #i is successfully received from a terminal, the base station may transmit a HARQ process number (HPN) value and an ACK for CG PUSCH #i and the terminal (e.g., the terminal that transmitted CG PUSCH #i) via a DCI. Here, the DCI may be CRC scrambled by a C-RNTI or CS-RNTI for the terminal. Additionally, or alternatively, the base station may transmit a short terminal ID for the terminal via the DCI.

[0184] For example, if reception of CG PUSCH #i fails, the base station can set / schedule resources for retransmission of CG PUSCH #i for the terminal via DCI. The base station can receive CG PUSCH #i from the terminal through the set / scheduled resources.

[0185] According to various embodiments of the present disclosure, a plurality of terminals can share and use the same CG PUSCH setting / resource, and accordingly, the efficiency of the CG PUSCH resource can be increased.

[0186] General devices to which the present disclosure may be applied

[0187] FIG. 9 illustrates a block diagram of a wireless communication device according to one embodiment of the present disclosure.

[0188] 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).

[0189] 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.

[0190] 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).

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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

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 first information related to at least one 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; The step of receiving control information related to at least one CG UL channel resource from the base station by the first terminal; and A method comprising the step of transmitting a CG UL channel to the base station by the first terminal through the at least one CG UL channel resource based on the control information. In paragraph 1, The first information comprises at least one of the identifier of the common setting information, the identifier of the at least one CG UL channel resource, or the occupancy status of the at least one CG UL channel resource, and A method in which the first information is transmitted to the base station via uplink control information (UCI) or a first medium access control (MAC) control element (CE). In paragraph 1, The above control information includes an indicator related to the activation of the at least one CG UL channel resource, and A method in which the above control information is transmitted to the terminal via downlink control information (DCI) or a second MAC CE. In paragraph 3, The above DCI is a method in which a cyclic redundancy check (CRC) is scrambled by a cell (C) radio network temporary identifier (RNTI), a configured scheduling (CS) RNTI, or a group (G) RNTI. In paragraph 3, The above DCI includes terminal identification information of the first terminal, and A method in which the terminal identification information of the first terminal is indicated by a terminal index field or a bitmap. In paragraph 3, A method in which, based on the DCI containing terminal identification information of the first terminal being transmitted to the plurality of terminals, the operation of at least one CG UL channel resource based on the remaining terminals excluding the first terminal among the plurality of terminals is skipped. In paragraph 1, The above control information includes an offset, A method in which at least one CG UL channel resource is a CG UL channel resource from the time of receiving the control information to the offset. In paragraph 1, The above common setting information includes at least one of an index of the plurality of CG UL channel resources and period information for repeating the setting of the plurality of CG UL channel resources, and A method in which the above common configuration information is transmitted to the plurality of terminals via a radio resource control (RRC) message. In paragraph 2, The above control information includes ACK (acknowledgement) information regarding the occupancy status of at least one CG UL channel resource, a method. In paragraph 1, A method wherein the above common setting information includes information related to the demodulation reference signal (DMRS) sequence of each of the plurality of terminals. 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 first information related to at least one 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 control information related to at least one CG UL channel resource from the base station through the one or more transceivers; and A first terminal configured to transmit a CG UL channel to a base station through one or more transceivers via at least one CG UL channel resource based on the above control information. 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, first information related to at least one CG UL channel resource among a plurality of CG uplink (UL) channel resources based on the common setting information from a first terminal among the plurality of terminals; A step of transmitting control information related to at least one CG UL channel resource to the first terminal by the base station; and A method of receiving a CG UL channel from the first terminal by the base station through the at least one CG UL channel resource based on the above control information. 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 first information related to at least one 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 control information related to at least one CG UL channel resource to the first terminal through the one or more transceivers; and A base station configured to receive a CG UL channel from the first terminal through the one or more transceivers via the at least one CG UL channel resource based on the above control information. In a processing device, the processing device is: 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. 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.

Images