Method and device for configuring uplink radio resource in wireless communication system

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. The present disclosure relates to a wireless communication system and, more particularly, to a method and a device capable of performing same, the method comprising: receiving a radio resource control (RRC) message including configured grant (CG) configuration information, the CG configuration information including information about at least one CG subset indicating at least one CG resource individually configured in each period; receiving an activation message including information indicating activation of at least one CG subset; activating the at least one CG subset on the basis of the activation message; and transmitting a first confirmation message in response to the activation message.

Description

Method and device for setting uplink radio resources in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and more particularly, to a method and device for setting uplink radio resources based on a Configured Grant (CG) in a wireless communication system.

[0002] 5G mobile communication technology defines a wide frequency band to enable fast transmission speeds and new services, and can be implemented not only in the sub-6GHz frequency band such as 3.5 gigahertz (3.5GHz), but also in the ultra-high frequency band called millimeter wave (mmWave) such as 28GHz and 39GHz ('Above 6GHz'). In addition, for 6G mobile communication technology, which is called the system after 5G communication (Beyond 5G), implementation in the terahertz band (for example, the 3 terahertz (3THz) band at 95GHz) is being considered to achieve a transmission speed that is 50 times faster than 5G mobile communication technology and an ultra-low latency time that is reduced to one-tenth.

[0003] In the early stages of 5G mobile communication technology, the goal is to support services and satisfy performance requirements for enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communications (URLLC), and massive Machine-Type Communications (mMTC). These include beamforming and massive MIMO to mitigate path loss of radio waves in ultra-high frequency bands and increase the transmission distance of radio waves, support for various numerologies (such as operation of multiple subcarrier intervals) and dynamic operation of slot formats for efficient use of ultra-high frequency resources, initial access technology to support multi-beam transmission and wideband, definition and operation of BWP (Bidth Part), new channel coding methods such as LDPC (Low Density Parity Check) codes for large-capacity data transmission and Polar Code for reliable transmission of control information, and L2 pre-processing (L2). Standardization has been made for network slicing, which provides dedicated networks specialized for specific services, and pre-processing.

[0004] Currently, discussions are underway to improve and enhance the initial 5G mobile communication technology in consideration of the services that 5G mobile communication technology was intended to support, and physical layer standardization is in progress for technologies such as V2X (Vehicle-to-Everything) to help autonomous vehicles make driving decisions and increase user convenience based on their own location and status information transmitted by vehicles, NR-U (New Radio Unlicensed) for the purpose of system operation that complies with various regulatory requirements in unlicensed bands, NR terminal low power consumption technology (UE Power Saving), Non-Terrestrial Network (NTN), which is direct terminal-satellite communication to secure coverage in areas where communication with terrestrial networks is impossible, and Positioning.

[0005] In addition, standardization of wireless interface architecture / protocols is in progress for technologies such as intelligent factories (Industrial Internet of Things, IIoT) to support new services through linkage and convergence with other industries, Integrated Access and Backhaul (IAB) that provides nodes for expanding network service areas by integrating wireless backhaul links and access links, Mobility Enhancement technology including Conditional Handover and Dual Active Protocol Stack (DAPS) handover, and 2-step random access (2-step RACH for NR) that simplifies random access procedures. Standardization is also in progress for system architecture / services such as 5G baseline architecture (e.g., Service-based Architecture, Service-based Interface) for grafting Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) that provides services based on the location of the terminal.

[0006] Once these 5G mobile communication systems are commercialized, an explosive increase in connected devices will be connected to the communication network, necessitating enhanced functionality and performance of 5G mobile communication systems and integrated operation of these connected devices. To this end, new research will be conducted on improving 5G performance and reducing complexity, supporting AI services, supporting metaverse services, and drone communications by utilizing eXtended Reality (XR), Artificial Intelligence (AI), and Machine Learning (ML) to efficiently support Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR).

[0007] In addition, the development of these 5G mobile communication systems includes new waveforms to ensure coverage in the terahertz band of 6G mobile communication technology, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), Array Antenna, and Large Scale Antenna, metamaterial-based lenses and antennas to improve the coverage of terahertz band signals, high-dimensional spatial multiplexing technology using Orbital Angular Momentum (OAM), Reconfigurable Intelligent Surface (RIS) technology, as well as full duplex technology to improve the frequency efficiency and system network of 6G mobile communication technology, satellite, AI (Artificial Intelligence) from the design stage and AI-based communication technology that realizes system optimization by internalizing end-to-end AI support functions, and ultra-high-performance communication and computing resources to provide services with complexity that exceeds the limits of terminal computing capabilities. It can serve as a basis for the development of next-generation distributed computing technologies that can be realized by utilizing them.

[0008] The purpose of the present disclosure is to provide a method and a device therefor for effectively indicating that a message for activating or deactivating a CG subset has been received by including information indicating a CG subset activated or deactivated during CG configuration in a CG Confirmation message in a wireless communication system supporting multiple CG Occasions within a cycle.

[0009] As one aspect of the present disclosure, a method performed by a terminal in a wireless communication system is provided, the method comprising: receiving an RRC (Radio Resource Control) message including CG (Configured Grant) configuration information from a base station, wherein the CG configuration information includes information on at least one CG subset indicating at least one CG resource individually configured within each period; receiving an activation message from the base station including information indicating activation of at least one CG subset; activating at least one CG subset based on the activation message; and transmitting a first confirmation message to the base station in response to the activation message.

[0010] As one aspect of the present disclosure, in a wireless communication system, a terminal includes a transceiver; and at least one processor coupled to the transceiver, wherein the at least one processor receives an RRC (Radio Resource Control) message including CG (Configured Grant) configuration information from a base station, wherein the CG configuration information includes information on at least one CG subset indicating at least one CG resource individually configured within each period, and receives an activation message including information indicating activation of at least one CG subset from the base station, and activates at least one CG subset based on the activation message, and in response to the activation message, transmits a first confirmation message to the base station.

[0011] As one aspect of the present disclosure, in a wireless communication system, a base station includes a transceiver; and at least one processor coupled to the transceiver, wherein the at least one processor transmits an RRC (Radio Resource Control) message including CG (Configured Grant) configuration information to a terminal, wherein the CG configuration information includes information on at least one CG subset representing at least one CG resource individually configured within each period, and transmits an activation message including information indicating activation of at least one CG subset to the terminal, wherein the at least one CG subset is activated based on the activation message, and in response to the activation message, a first confirmation message can be received from the terminal.

[0012] FIG. 1 is a diagram illustrating a Configured Grant transmission operation method according to one embodiment of the present disclosure.

[0013] FIG. 2 is a diagram illustrating an activation operation method of a CG subset according to one embodiment of the present disclosure.

[0014] FIG. 3 is a diagram illustrating a deactivation operation method of a CG subset according to one embodiment of the present disclosure.

[0015] FIG. 4 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0016] FIG. 5 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0017] FIG. 6 is a diagram illustrating a method for setting up CG Confirmation transmission according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0018] FIG. 7 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0019] FIG. 8 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0020] FIG. 9 is a diagram illustrating the structure of a base station according to one embodiment of the present invention.

[0021] FIG. 10 is a diagram illustrating the structure of a terminal according to one embodiment of the present invention.

[0022] Hereinafter, in describing the present invention, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, an embodiment of the present invention will be described with reference to the attached drawings. In addition, the terms described below are terms defined in consideration of the functions of the present disclosure, and these may vary depending on the intention or custom of the user or operator. Therefore, the definitions should be made based on the contents throughout this specification. Terms used in the following description for identifying connection nodes, terms referring to network entities, terms referring to messages, terms referring to interfaces between network entities, terms referring to various identification information, etc. are examples for the convenience of explanation. Therefore, the present disclosure is not limited to the terms described below, and other terms referring to objects having equivalent technical meanings may be used.

[0023] For convenience of explanation below, this disclosure is based on 3GPP 5G / NR (5 thThe present disclosure uses terms and names defined in the 3rd Generation New Radio (3GPP) standards (e.g., 3GPP Technical Specification 38 series) or the 3rd Generation Partnership Project Long Term Evolution (3GPP LTE) standards (e.g., 3GPP Technical Specification 36 series). However, the present disclosure is not limited to the above terms and names, and can be equally applied to systems conforming to other standards. For example, the present disclosure can be applied to NR-Advance, the 6th generation mobile communication technology (6G), or a next-generation mobile communication system with a similar technical background to be developed in the future.

[0024] In the present disclosure, the RRC (Radio Resource Control) layer may mean a layer of a wireless protocol, and is abbreviated for the purpose of brief description in the following specification.

[0025] In the present disclosure, the MAC (Medium Link Control) layer may mean a layer of a wireless protocol, and is abbreviated for the purpose of brief description in the following specification.

[0026] In the present disclosure, a base station is an entity that performs resource allocation of a terminal, and may be at least one of a gNode B, an eNode B, a Node B (or, x Node B (where x is an alphabet including g and e)), a BS (Base Station), a radio access unit, a base station controller, a satellite, an airborne vehicle, or a node on a network, but is not limited thereto. The base station in the present disclosure may mean the base station itself, a Cell, or a RU (Radio Unit) depending on the interpretation, and the target that exchanges messages with a UE (User Equipment) may be a DU (Distributed Unit) or a CU (Central Unit) depending on the structure.

[0027] Additionally, in the present disclosure, a terminal (User Equipment, UE) may include a mobile station (MS), a cellular phone, a smartphone, a computer, a vehicle, a satellite, or a multimedia system capable of performing a communication function.

[0028] In the present disclosure, downlink (DL) refers to a wireless transmission path of a signal transmitted from a base station to a terminal, and uplink (UL) refers to a wireless transmission path of a signal transmitted from a terminal to a base station.

[0029] It will be appreciated that each block of the flowchart drawings and combinations of the flowchart drawings can be performed by computer program instructions. These computer program instructions can be installed in a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, such that the instructions, when executed by the processor of the computer or other programmable data processing equipment, create a means for performing the functions described in the flowchart block(s). These computer program instructions can also be stored in a computer-available or computer-readable memory that can direct a computer or other programmable data processing equipment to perform the functions in a specific manner, such that the instructions stored in the computer-available or computer-readable memory can produce an article of manufacture that includes instruction means for performing the functions described in the flowchart block(s). Since the computer program instructions may be installed on a computer or other programmable data processing device, a series of operational steps may be performed on the computer or other programmable data processing device to create a computer-executable process, and the instructions that cause the computer or other programmable data processing device to perform the steps for performing the functions described in the flowchart block(s) may also provide steps for performing the functions described in the flowchart block(s).

[0030] Additionally, each block may represent a module, segment, or portion of code that contains one or more executable instructions for executing a specific logical function(s). It should also be noted that in some alternative implementation examples, the functions mentioned in the blocks may occur out of order. For example, two blocks shown in succession may in fact be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order depending on the corresponding function. In this case, the term '~unit' used in the present embodiment means software or a hardware component such as an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit), and the '~unit' may perform certain roles. However, the '~unit' is not limited to software or hardware. The '~unit' may be configured to be on an addressable storage medium and may be configured to execute one or more processors. Thus, as an example, the '~ unit' includes components such as software components, object-oriented software components, class components, and task components, processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functionality provided within the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, the components and '~ units' may be implemented to reproduce one or more CPUs within a device or a secure multimedia card. Also, in an embodiment, the '~ unit' may include one or more processors.

[0031] FIG. 1 is a diagram illustrating a Configured Grant transmission operation method according to one embodiment of the present disclosure.

[0032] Referring to FIG. 1, in a wireless communication system, an uplink radio resource (Uplink Grant) transmitted by a terminal to a base station can be divided into a Dynamic Grant (DG) and a Configured Grant (CG) depending on the resource allocation method. A DG is a radio resource for which a base station designates the location of a resource through a DCI (Downlink Control Information) message on a PDCCH (Physical Downlink Control Channel) physical channel, and may refer to a one-time resource. A CG may be a radio resource whose cycle is set by a base station through an RRC (Radio Resource Control) message and repeated at regular intervals. A CG can be divided into a first type (Type-1) CG that is activated immediately when set by an RRC message, and a second type (Type-2) CG that sets the location of the first resource and activates it through a DCI message on the PDCCH physical channel using a CS-RNTI (Configured Scheduling - Radio Network Temporary Identity) after being set by an RRC message. Services like XR (Extended Reality) can generate periodic traffic, and the amount of data generated periodically, such as for transmitting high-definition video information, can be large. This may necessitate setting up multiple CG transmission resources within a single cycle. Even for aperiodic traffic, CG transmission resources can be used to meet low-latency requirements.

[0033] The embodiment of Fig. 1 shows how CG resources are set.

[0034] CG may mean that uplink radio resources (Uplink Grant) are set at regular intervals (100, 120, 140). However, the number of CG resources set and activated in one cycle may be more than one. In the embodiment of Fig. 1, two CG resources (CG Occasions) are set in one cycle as an example, but the number of CG resources set in one cycle may vary depending on the embodiment. In order to set multiple CG resources in one cycle, the number of CG resources set in one cycle may be set by an RRC message or by DCI (Downlink Control Information) of a PDCCH (Physical Downlink Control Channel). According to one embodiment, instead of the number of CG resources set in one cycle, n-th CG resources in each cycle may be individually set for each CG resource. In the embodiment of Fig. 1, the first (n=0) CG resource (110, 130, 150, 170) and the second (n=1) CG resource (115, 135, 155, 175) are configured for each period, respectively. In the present disclosure, the nth CG resource configured within each period may be referred to as the nth CG subset. In the embodiment of Fig. 1, it is shown that the CG resources are not located in adjacent symbols within each period, but multiple CG resources may be located in adjacent symbols on the time axis. One CG configuration may be composed of one or more CG subsets (110, 115, 130, 135, 150, 155, 170, 175) and may be represented by an identifier, ConfiguredGrantConfigIndexMAC value.

[0035] FIG. 2 is a diagram illustrating an activation operation method of a CG subset according to one embodiment of the present disclosure.

[0036] When two or more CG subsets are configured within a CG period in a single CG configuration, the uplink radio resources of each CG subset can be activated separately. This can be determined by the judgment of the base station or the terminal depending on whether or not there is uplink data to be transmitted by the terminal to the base station through the CG resources and the amount of uplink data. The embodiment of FIG. 2 illustrates a method in which the base station determines which CG subset of each CG configuration to activate and instructs the terminal to activate the CG subset. In order for the base station (200) to configure CG uplink radio resources for the terminal (210), the base station may transmit an RRC Reconfiguration message (230) to the terminal, and the message may include the period (252, 282) of the CG uplink radio resources and the number of CG subsets. In the embodiment of FIG. 2, a Type 2 CG that is not directly activated by a configuration by an RRC message is assumed, and in this case, the CG resource may not be activated immediately upon receiving the RRC message but may be in a deactivated state. Thereafter, the base station may transmit an activation message of the CG subset to the terminal in order to activate all or part of the CG subset of the CG configuration (240). Step 240 may indicate that the CG resource (250, 260, 280, 290) corresponding to the first CG subset (CG Subset 1) of the two CG subsets configured in the embodiment of FIG. 2 is activated. The CG subset activation message (240) may be transmitted by the Configured Scheduling - Radio Network Temporary Identifier (CS-RNTI) of the Downlink Control Information (DCI) message transmitted on the Physical Downlink Control Channel (PDCCH) physical channel.This DCI message includes information indicating which CG subset is activated, so that the receiving terminal can activate the radio resources of the corresponding CG subset. In step 240, the terminal that has received the CG subset activation message can apply the activation of the corresponding CG subset and transmit a CG Confirmation message to the base station to confirm to the base station that the CG subset activation message has been received (245). The CG Confirmation message (245) can include information on which CG configuration information of which CG resource of which CG subset has been activated. In one embodiment, the CG Confirmation message (245) can include information on which CG configuration information of which CG subset has been activated. Afterwards, the terminal can activate the CG resources (250, 260, 280, 290) of the first CG subset in the CG configuration, and perform uplink transmission to the base station using the activated CG resources. On the other hand, the CG resources (251, 261) of the second CG subset that are not activated are not used for uplink transmission because they are deactivated resources. Thereafter, the base station may transmit an activation message (270) of the CG subset to the terminal to activate the deactivated CG subset of the CG configuration. In step 270, it may indicate that the CG resources (281, 291) corresponding to the second CG subset (CG Subset 2) among the two CG subsets configured in the embodiment of FIG. 2 are activated. The activation message of the CG subset may be transmitted by the CS-RNTI (Configured Scheduling - Radio Network Temporary Identifier) ​​of the DCI (Downlink Control Information) message transmitted on the PDCCH (Physical Downlink Control Channel) physical channel.This DCI message includes information indicating which CG subset is activated, so that the receiving terminal can activate the radio resources of the corresponding CG subset. The terminal that receives the CG subset activation message (270) can apply the activation of the corresponding CG subset and transmit a CG Confirmation message (275) to the base station to confirm to the base station that the CG subset activation message has been received (275). The CG Confirmation message may include information on which CG configuration information of which CG subset's CG resources have been activated. In one embodiment, the CG Confirmation message may include information on which CG configuration information of which CG subset's CG resources have been activated. Afterwards, the terminal activates the CG resources (281, 291) of the second CG subset in the CG configuration, and the terminal can perform uplink transmission to the base station using the activated CG resources.

[0037] FIG. 3 is a diagram illustrating a deactivation operation method of a CG subset according to one embodiment of the present disclosure.

[0038] When two or more CG subsets are configured within a CG period in a single CG configuration, the uplink radio resources of each CG subset can be deactivated separately. This can be determined at the discretion of the base station or the terminal depending on whether or not there is uplink data to be transmitted by the terminal to the base station through the CG resource and the amount of uplink data. At the starting point of the embodiment of FIG. 3, it is assumed that the base station (300) transmits an RRC Reconfiguration message to the terminal (310) in order to configure CG uplink radio resources for the terminal, and thereafter, the CG resources of all subsets (320, 321) of the corresponding CG configuration are activated. However, the CG deactivation method described in FIG. 3 can be applied even if the CG resources of only some CG subsets are activated. The embodiment of FIG. 3 assumes a Type 2 CG that is not directly activated by configuration via an RRC message. In this case, the CG resources may not be activated immediately upon receiving the RRC message but may remain in a deactivated state. Thereafter, the base station may transmit a CG subset activation message to the terminal to activate all or part of the CG subset of the CG configuration. The base station may determine which CG subset of each CG configuration to deactivate and instruct the terminal to deactivate the CG subset (330). Step 330 may indicate instructing the deactivation of CG resources (340, 360, 370) corresponding to the first CG subset (CG Subset 1) of the two CG subsets configured in the embodiment of FIG. 3.The deactivation message (330) of the CG subset can be transmitted by the CS-RNTI (Configured Scheduling - Radio Network Temporary Identifier) ​​of the DCI (Downlink Control Information) message transmitted on the PDCCH (Physical Downlink Control Channel) physical channel. This DCI message includes information indicating which CG subset is to be deactivated, so that the receiving terminal can deactivate the radio resources of the corresponding CG subset. In step 330, the terminal that receives the deactivation message (330) of the CG subset can apply the deactivation of the corresponding CG subset and transmit a CG Confirmation message to the base station to confirm to the base station that the deactivation message of the CG subset has been received (335). However, if the CG Confirmation message (335) is transmitted from the CG resource (340) of the CG subset indicating deactivation, the CG resource (340) of this CG subset may not be deactivated immediately upon receiving the deactivation message (330), but may be deactivated after the transmission of the CG Confirmation message (335). The CG Confirmation message may include information on which CG subset of which CG configuration information the CG resource of which has been deactivated. In one embodiment, the CG Confirmation message may include information on which CG subset of which CG configuration information the CG resource of which has been deactivated. After this, the terminal may keep the CG resources (360, 370) of the first CG subset in the CG configuration in a deactivated state and the CG resources (341, 361, 371) of the second CG subset still activated. The terminal may perform uplink transmission to the base station on the activated CG resources.On the other hand, the CG resources (360, 370) of the first CG subset that is not activated may not be used for uplink transmission because they are deactivated resources. Thereafter, the base station may transmit a CG subset deactivation message to the terminal to deactivate the activated CG subset of the CG configuration (350). In step 350, the CG subset deactivation message (350) may indicate that the CG resources (361, 371) corresponding to the second CG subset (CG Subset 2) among the two CG subsets configured in the embodiment of FIG. 3 are deactivated. The CG subset deactivation message may be transmitted by the CS-RNTI (Configured Scheduling - Radio Network Temporary Identifier) ​​of the DCI (Downlink Control Information) message transmitted on the PDCCH (Physical Downlink Control Channel). This DCI message includes information indicating which CG subset is to be deactivated, so that the receiving terminal can deactivate the radio resources of the corresponding CG subset. In step 350, a terminal that receives a deactivation message of a CG subset may apply deactivation of the corresponding CG subset and transmit a CG Confirmation message to the base station to confirm receipt of the deactivation message of the CG subset (355). However, if the CG Confirmation message (355) is transmitted from a CG resource (361) of a CG subset that indicates deactivation, the CG resource (361) of this CG subset may not be deactivated immediately upon receiving the deactivation message (350), but may be deactivated after transmission of the CG Confirmation message (355) (371). The CG Confirmation message may include information on which CG resource of which CG configuration information has been deactivated.In one embodiment, the CG Confirmation message may include information regarding which CG resource of which CG subset of which CG configuration information has been deactivated. The terminal may then indicate that the CG resource (371) of the second CG subset in the CG configuration has been deactivated.

[0039] FIG. 4 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0040] As described in FIG. 2 or 3, after activation or deactivation of CG resources of a CG subset in the CG configuration information is instructed, the terminal may transmit a CG Confirmation message (245, 275, 335, 355) to the base station to confirm to the base station that it has received (or has applied) a message instructing CG activation or deactivation. When the terminal receives a message instructing activation or deactivation of CG resources of a CG subset in the CG configuration information from the base station, a CG Confirmation message may be triggered, and when the CG Confirmation message is triggered, the terminal may generate a CG Confirmation message and transmit it to the base station. The embodiment of FIG. 4 illustrates an embodiment in which the CG Confirmation message generated at this time has the format of a MAC CE (Medium Access Control - Control Element) (420). In the case of the MAC CE (420), it is a message transmitted as control information in the MAC layer and can be included in a MAC PDU (Protocol Data Unit) and transmitted. When a MAC CE (420) is included in a MAC PDU, a MAC subheader (410) may be added in front of the MAC CE (420) and included in the MAC PDU to identify that the MAC CE (420) is included. The MAC subheader (410) may include an LCID (Logical Channel Identity) field that indicates which logical channel data or MAC CE a subsequent message is, and in one embodiment, may include an R (Reserved) field for adjusting the byte size. In one embodiment, when the number of LCIDs indicated by the LCID field length is insufficient, an eLCID (Extended LCID) value in the form of an extended LCID length may indicate a CG Confirmation message.If a CG Confirmation message identified by the LCID field of the MAC CE (420) is transmitted triggered by activation or deactivation of a CG subset, the CG Confirmation message may be a MAC CE (420) with a length of 0 bytes. In this case, the CG Confirmation message transmitted by the terminal to the base station may mean that the terminal has recently received (or has applied) an activation or deactivation instruction of the CG subset instructed by the base station.

[0041] FIG. 5 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0042] As described in FIG. 2 or 3, after activation or deactivation of CG resources of a CG subset in the CG configuration information is instructed, the terminal may transmit a CG Confirmation message (245, 275, 335, 355) to the base station to confirm to the base station that it has received (or has applied) a message instructing CG activation or deactivation. When the terminal receives a message instructing activation or deactivation of CG resources of a CG subset in the CG configuration information from the base station, a CG Confirmation message may be triggered, and when the CG Confirmation message is triggered, the terminal may generate a CG Confirmation message and transmit it to the base station. The embodiment of FIG. 5 shows one embodiment in which the CG Confirmation message generated at this time has the format of a MAC CE (Medium Access Control - Control Element). In the case of a MAC CE, it is a message transmitted as control information in the MAC layer and can be included in a MAC PDU (Protocol Data Unit) and transmitted. When a MAC CE is included in a MAC PDU, a MAC subheader (510) may be added to the front of the MAC CE and included in the MAC PDU to identify that the MAC CE is included. The MAC subheader (510) may include an LCID (Logical Channel Identity) field that indicates which logical channel data or MAC CE a subsequent message is, and in one embodiment, may include an R (Reserved) field for adjusting the byte size. In one embodiment, when the number of LCIDs indicated by the LCID field length is insufficient, an eLCID (Extended LCID) value in the form of an extended LCID length may indicate a CG Confirmation message.When a CG Confirmation message identified by the LCID field of the MAC CE is transmitted triggered by activation or deactivation of a CG subset, the CG Confirmation message may include a CGi field (520) corresponding to each CG setting. The i value of the CGi field (520) may correspond to the index (ConfiguredGrantConfigIndexMAC) of the CG setting used in the MAC layer. For example, the CG4 field may be a bit indicating a Confirmation for a CG setting in which the index of the CG setting used in the MAC layer has a value of 4. Specifically, in the embodiment of FIG. 5, the CGi field (520) may indicate whether the terminal has received (or has received and applied) a field indicating activation or deactivation of the CG, or activation or deactivation of the CG subset, in the PDCCH physical channel for the CG setting in which the CG index used in the MAC layer is i. For example, if the CGi value represents 1, this may indicate that the terminal has received (or has applied) a field indicating activation or deactivation of the CG, or activation or deactivation of a CG subset, on the PDCCH physical channel for a CG configuration whose CG index is i used in the MAC layer. In this case, if the CGi value represents 0, this may indicate that the terminal has not received (or has not applied) a field indicating activation or deactivation of the CG, or activation or deactivation of a CG subset, on the PDCCH physical channel for a CG configuration whose CG index is i used in the MAC layer. In the embodiment of FIG. 5, an example is shown in which 32 CGi fields indicate that activation or deactivation instructions for CG subsets for up to 32 CG configurations have been received (or have applied). However, the number of CGi fields may vary depending on the embodiment.

[0043] FIG. 6 is a diagram illustrating a method for setting up CG Confirmation transmission according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0044] When multiple CG subsets are configured in one CG configuration and activation or deactivation of the CG subsets is instructed by the base station, the terminal needs to transmit to the base station which activation or deactivation of the instructed CG subset has been received (or has been received and applied). If this is transmitted using the CG Confirmation MAC CE (520) using the CGi field as shown in the embodiment of FIG. 5, the CGi field is a field indicating whether an activation or deactivation instruction for each CG configuration has been received, so it may be difficult for the base station to know exactly which CG subset within the CG configuration the Confirmation is for activation and deactivation. Since the CG Confirmation message can include multiple CGi fields and also includes CGi fields for CG configurations that are not configured in the terminal at one point in time, a method of transmitting a CG Confirmation message of a CG subset by utilizing the CGi field for a CG configuration that is not configured in the terminal can be considered. To this end, the base station can configure the terminal to use which CGi field to send the CG Confirmation message depending on whether the terminal is activated or deactivated from the base station for each CG subset. This configuration can be transmitted from the base station to the terminal via an RRC message. In addition, information on which CGi field to use to send the CG Confirmation message depending on whether the terminal is activated or deactivated from the base station for each CG subset can be included in the CG configuration (CG-Config) information of the RRC message.

[0045] In the embodiment of Fig. 6, a CG configuration (ConfiguredGrantConfigIndexMAC = 3) (600) in which the index of the CG configuration used in the MAC layer has a value of 3 is shown as an example. Each CG configuration can have a periodicity (633, 643, 653) set, which is a time at which CG resources are repeated at regular intervals, and one or more CG subsets can be set. In the embodiment of Fig. 6, two CG subsets are shown set, namely, a first CG subset (CG Subset 1) (610, 630, 640, 650, 660) and a second CG subset (CG Subset 2) (620, 631, 641, 651, 661). The CG resources of each CG subset can be repeated regularly for every CG period. In one embodiment, when the first CG subset is instructed to be activated or deactivated, the terminal is configured to transmit a CG Confirmation message to the base station by setting the value of the CG15 field to 1 (610). And, when the second CG subset is instructed to be activated or deactivated, the terminal is configured to transmit a CG Confirmation message to the base station by setting the value of the CG16 field to 1 (620). However, the base station can configure the terminal to use which value of the CGi field to transmit the CG Confirmation message.

[0046] FIG. 7 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0047] As described in FIG. 2 or 3, after activation or deactivation of CG resources of a CG subset in the CG configuration information is instructed, the terminal may transmit a CG Confirmation message (245, 275, 335, 355) to the base station to confirm to the base station that it has received (or has applied) a message instructing CG activation or deactivation. When the terminal receives a message instructing activation or deactivation of CG resources of a CG subset in the CG configuration information from the base station, a CG Confirmation message may be triggered, and when the CG Confirmation message is triggered, the terminal may generate a CG Confirmation message and transmit it to the base station. The embodiment of FIG. 7 shows one embodiment in which the CG Confirmation message generated at this time has the format of a MAC CE (Medium Access Control - Control Element). In the case of a MAC CE, it is a message transmitted as control information in the MAC layer and can be included in a MAC PDU (Protocol Data Unit) and transmitted. When a MAC CE is included in a MAC PDU, a MAC subheader (710) may be added to the front of the MAC CE and included in the MAC PDU to identify that the MAC CE is included. The MAC subheader (710) may include an LCID (Logical Channel Identity) field that indicates which logical channel data or MAC CE a subsequent message is, and in some embodiments, may include an R (Reserved) field for adjusting the byte size. In some embodiments, when the number of LCIDs indicated by the LCID field length is insufficient, an eLCID (Extended LCID) value in the form of an extended LCID length may indicate a CG Confirmation message.When a CG Confirmation message identified by the LCID field of the MAC CE is transmitted triggered by activation or deactivation of a CG subset, the CG Confirmation message may include a CGSi field (720) corresponding to each CG subset. The i value of the CGSi field (720) may correspond to the index (ConfiguredGrantSubsetIndexMAC) of the CG subset used in the MAC layer. For example, the CGS4 field may be a bit indicating a Confirmation for a CG subset whose index of the CG subset used in the MAC layer has a value of 4. The index of the CG subset may be set separately from the index used by the CG configuration, and may be set by the base station transmitting it to the terminal by an RRC message. Specifically, in the embodiment of FIG. 7, the CGSi field (720) may indicate whether the terminal has received (or has received and applied) a field indicating activation or deactivation of a CG subset whose index is i used by the terminal in the MAC layer on the PDCCH physical channel. For example, if the CGSi value represents 1, this may indicate that the terminal has received (or has received and applied) a field indicating activation or deactivation of a CG subset whose index is i used by the terminal in the MAC layer on the PDCCH physical channel. In this case, if the CGSi value represents 0, this may indicate that the terminal has not received (or has not received and applied) a field indicating activation or deactivation of a CG subset whose index is i used by the terminal in the MAC layer on the PDCCH physical channel.In the embodiment of FIG. 7, an example is shown in which 32 CGSi fields (720) indicate that activation or deactivation instructions for CG subsets for up to 32 CG subsets have been received (applied), but the number of CGSi fields (720) may vary depending on the embodiment. In some embodiments, when the base station instructs the terminal to activate or deactivate all CG subsets set in one CG configuration, the terminal may transmit a CG Confirmation message to the base station by setting the values ​​of the CGSi fields corresponding to all CG subsets of the CG configuration to 1.

[0048] FIG. 8 is a diagram illustrating a CG Confirmation message format according to activation and deactivation of a CG subset according to one embodiment of the present disclosure.

[0049] As described in FIG. 2 or 3, after activation or deactivation of CG resources of a CG subset in the CG configuration information is instructed, the terminal may transmit a CG Confirmation message (245, 275, 335, 355) to the base station to confirm to the base station that it has received (or has applied) a message instructing CG activation or deactivation. When the terminal receives a message instructing activation or deactivation of CG resources of a CG subset in the CG configuration information from the base station, a CG Confirmation message may be triggered, and when the CG Confirmation message is triggered, the terminal may generate a CG Confirmation message and transmit it to the base station. The embodiment of FIG. 8 shows one embodiment in which the CG Confirmation message generated at this time has the format of a MAC CE (Medium Access Control - Control Element). In the case of a MAC CE, it is a message transmitted as control information in the MAC layer and can be included in a MAC PDU (Protocol Data Unit) and transmitted. When a MAC CE is included in a MAC PDU, a MAC subheader (810) may be added to the front of the MAC CE and included in the MAC PDU to identify that the MAC CE is included. The MAC subheader (810) may include an LCID (Logical Channel Identity) field that indicates which logical channel data or MAC CE a subsequent message is, and in one embodiment, may include an R (Reserved) field for adjusting the byte size. In some embodiments, when the number of LCIDs indicated by the LCID field length is insufficient, an eLCID (Extended LCID) value in the form of an extended LCID length may indicate a CG Confirmation message.When a CG Confirmation message identified by the LCID field of the MAC CE is transmitted triggered by activation or deactivation of a CG subset, the CG Confirmation message may include a CGSi,j field (820) corresponding to each CG subset. The i value of the CGSi,j field (820) may correspond to the index (ConfiguredGrantConfigIndexMAC) of the CG configuration used in the MAC layer, and the j value may mean the jth (j=0,1,...,7) CG subset of the CG having the CG configuration index of i. For example, the CGS1,4 field may be a bit indicating a Confirmation for the 4th CG subset of the CG configuration having a value of 1 as the index of the CG configuration used in the MAC layer. In the embodiment of FIG. 8, it is shown that up to 8 CG subsets can be set for one CG configuration (j = 0, 1, 7), but the maximum number of CG subsets that can be set per CG configuration is unrelated to the gist of the present invention. Specifically, in the embodiment of FIG. 8, the CGSi.j field (820) can indicate whether the terminal has received (or has received and applied) a field indicating activation or deactivation of the j-th CG subset of the CG configuration whose index is i used by the terminal in the MAC layer on the PDCCH physical channel. For example, when the CGSi,j value indicates 1, it can indicate that the terminal has received (or has received and applied) a field indicating activation or deactivation of the j-th CG subset of the CG configuration whose index is i used by the terminal in the MAC layer on the PDCCH physical channel.At this time, if the CGSi,j value indicates 0, it can indicate that the terminal has not received (or has not applied) a field indicating activation or deactivation of the j-th subset of the CG configuration whose index is i in the MAC layer used by the terminal on the PDCCH physical channel. In the embodiment of Fig. 8, an example is shown indicating that activation or deactivation instructions of up to 8 CG subsets have been received (or applied) for up to m+1 CG configurations, respectively, but the number of CGSi,j fields (820) may vary depending on the embodiment. In one embodiment, if the base station instructs the terminal to activate or deactivate all CG subsets set in one CG configuration, the terminal can transmit a CG Confirmation message to the base station by setting the value of the CGSi,j field (820) corresponding to all CG subsets of the CG configuration to 1.

[0050] FIG. 9 is a diagram illustrating the structure of a base station according to one embodiment of the present invention.

[0051] Referring to FIG. 9, the base station may include a transceiver (910), a control unit (920), and a storage unit (930). In the present invention, the control unit (920) may be defined as a circuit or an application-specific integrated circuit or at least one processor. The transceiver (910) may transmit and receive signals with other network entities. The transceiver (910) may, for example, transmit system information to a terminal and transmit a synchronization signal or a reference signal. The control unit (920) may control the overall operation of the base station according to the embodiment proposed in the present invention. For example, the control unit (920) may control the signal flow between each block so as to perform operations according to the flowchart described above. The storage unit (930) may store at least one of information transmitted and received through the transceiver (910) and information generated through the control unit (920).

[0052] FIG. 10 is a diagram illustrating the structure of a terminal according to one embodiment of the present invention.

[0053] Referring to FIG. 10, the terminal may include a transceiver (1010), a control unit (1020), and a storage unit (1030). In the present invention, the control unit (1020) may be defined as a circuit or an application-specific integrated circuit or at least one processor. The transceiver (1010) may transmit and receive signals with other network entities. The transceiver (1010) may receive system information from a base station, for example, and may receive a synchronization signal or a reference signal. The control unit (1020) may control the overall operation of the terminal according to the embodiment proposed in the present invention. For example, the control unit (1020) may control the signal flow between each block so as to perform operations according to the flowchart described above. The storage unit (1030) may store at least one of information transmitted and received through the transceiver (1010) and information generated through the control unit (1020).

[0054] In one embodiment, the RRC message may include at least one of information about the period of the CG uplink radio resource and information about the number of CG subsets.

[0055] In one embodiment, a method performed by a terminal in a wireless communication system may include: receiving a deactivation message from a base station including information indicating deactivation of at least one CG subset; deactivating at least one CG subset based on the deactivation message; and transmitting a second confirmation message to the base station in response to the deactivation message.

[0056] In one embodiment, a method performed by a terminal in a wireless communication system may include the step of deactivating at least one CG subset after transmission of the second confirmation message is performed, if the second confirmation message is transmitted in at least one CG subset indicating deactivation.

[0057] In one embodiment, the first confirmation message may include information for confirming whether an activation message has been received and whether activation of at least one CG subset has been applied, and the second confirmation message may include information for confirming whether a deactivation message has been received and whether deactivation of at least one CG subset has been applied.

[0058] In one embodiment, the first confirmation message and the second confirmation message may include at least one of a first field corresponding to CG configuration information and a second field corresponding to at least one CG subset.

[0059] In one embodiment, the value indicated by the first field may include information on whether an activation message or a deactivation message is received and whether activation or deactivation of CG setting information corresponding to the first field is applied, and the value indicated by the second field may include information on whether an activation message or a deactivation message is received and whether activation or deactivation of at least one CG subset corresponding to the second field is applied.

[0060] In one embodiment, at least one processor may receive a deactivation message from a base station that includes information indicating deactivation of at least one CG subset, deactivate the at least one CG subset based on the deactivation message, and transmit a second confirmation message to the base station in response to the deactivation message.

[0061] In one embodiment, at least one processor may deactivate at least one CG subset after transmission of the second confirmation message is performed, if the second confirmation message is transmitted in at least one CG subset indicating deactivation.

[0062] The methods according to the embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

[0063] When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. The one or more programs stored in the computer-readable storage medium are configured for execution by one or more processors within an electronic device. The one or more programs include instructions that cause the electronic device to execute methods according to the embodiments described in the claims or specification of the present disclosure.

[0064] These programs (software modules, software) may be stored in random access memory, non-volatile memory including flash memory, read only memory (ROM), electrically erasable programmable read only memory (EEPROM), magnetic disc storage device, compact disc ROM (CD-ROM), digital versatile discs (DVDs) or other forms of optical storage device, magnetic cassette. Or, they may be stored in a memory configured as a combination of some or all of these. In addition, each configuration memory may be included in multiple numbers.

[0065] Additionally, the program may be stored in an attachable storage device that is accessible via a communication network such as the Internet, an intranet, a local area network (LAN), a wide local area network (WLAN), a storage area network (SAN), or a combination thereof. Such a storage device may be connected to a device performing an embodiment of the present disclosure via an external port. Additionally, a separate storage device on the communication network may be connected to a device performing an embodiment of the present disclosure.

[0066] In the specific embodiments of the present disclosure described above, components included in the invention are expressed in the singular or plural form, depending on the specific embodiment presented. However, the singular or plural expressions are selected to suit the presented situation for convenience of explanation, and the present disclosure is not limited to singular or plural components. Components expressed in the plural form may be composed of singular elements, or components expressed in the singular form may be composed of plural elements.

[0067] While the detailed description of this disclosure has described specific embodiments, it should be understood that various modifications are possible without departing from the scope of this disclosure. Therefore, the scope of this disclosure should not be limited to the described embodiments, but should be defined not only by the scope of the claims described below, but also by equivalents thereof.

Claims

1. In a method performed by a terminal in a wireless communication system, Receives an RRC (Radio Resource Control) message containing CG (Configured Grant) setting information from the base station, The above CG setting information comprises information on at least one CG subset representing at least one CG resource that is individually set within each period; A step of receiving an activation message from the base station including information indicating activation of at least one CG subset; A step of activating at least one CG subset based on the activation message; and A method comprising the step of transmitting a first confirmation message to the base station in response to the activation message.

2. In paragraph 1, A method wherein the RRC message includes at least one of information on a period of CG uplink radio resources and information on the number of CG subsets.

3. In paragraph 1, A step of receiving a deactivation message from the base station including information indicating deactivation of at least one CG subset; a step of deactivating at least one CG subset based on the deactivation message; and A method further comprising the step of transmitting a second confirmation message to the base station in response to the deactivation message.

4. In paragraph 3, The step of disabling at least one CG subset comprises: A method comprising the step of deactivating at least one CG subset after transmission of the second confirmation message is performed, if the second confirmation message is transmitted from at least one CG subset indicating the deactivation.

5. In paragraph 3, The first confirmation message includes information for confirming whether the activation message has been received and whether activation of at least one CG subset has been applied. A method wherein the second confirmation message includes information for confirming whether the deactivation message has been received and whether deactivation of at least one CG subset has been applied.

6. In paragraph 3, A method wherein the first confirmation message and the second confirmation message include at least one of a first field corresponding to the CG setting information and a second field corresponding to the at least one CG subset.

7. In paragraph 6, The value indicated by the first field includes information on whether the activation message or the deactivation message has been received and whether the CG setting information corresponding to the first field has been activated or deactivated. A method in which the value indicated by the second field includes information on whether the activation message or the deactivation message has been received and whether activation or deactivation of at least one CG subset corresponding to the second field has been applied.

8. In a wireless communication system, the terminal, Transmitter and receiver; and At least one processor coupled to the transceiver, At least one processor of the above, Receives an RRC (Radio Resource Control) message containing CG (Configured Grant) setting information from the base station, The above CG setting information includes information about at least one CG subset representing at least one CG resource that is individually set within each cycle, Receiving an activation message from the base station including information indicating activation of at least one CG subset; Based on the above activation message, activating at least one CG subset, A terminal that transmits a first confirmation message to the base station in response to the above activation message.

9. In paragraph 8, The terminal wherein the RRC message includes at least one of information on the period of CG uplink radio resources and information on the number of CG subsets.

10. In paragraph 8, At least one processor of the above, Receiving a deactivation message from the base station including information indicating deactivation of at least one CG subset; Based on the above deactivation message, deactivate at least one CG subset, A terminal that transmits a second confirmation message to the base station in response to the above deactivation message.

11. In clause 10, At least one processor of the above, A terminal that deactivates at least one CG subset after transmission of the second confirmation message is performed, if the second confirmation message is transmitted from at least one CG subset indicating the deactivation.

12. In paragraph 10, The first confirmation message includes information for confirming whether the activation message has been received and whether activation of at least one CG subset has been applied. The second confirmation message is a terminal including information for confirming whether the deactivation message has been received and whether deactivation of at least one CG subset has been applied.

13. In paragraph 10, A terminal wherein the first confirmation message and the second confirmation message include at least one of a first field corresponding to the CG setting information and a second field corresponding to the at least one CG subset.

14. In paragraph 13, The value indicated by the first field includes information on whether the activation message or the deactivation message has been received and whether the CG setting information corresponding to the first field has been activated or deactivated. A terminal in which the value indicated by the second field includes information on whether the activation message or the deactivation message has been received and whether activation or deactivation of at least one CG subset corresponding to the second field has been applied.

15. In a wireless communication system, the base station, Transmitter and receiver; and At least one processor coupled to the transceiver, At least one processor of the above, Transmits an RRC (Radio Resource Control) message containing CG (Configured Grant) setting information to the terminal. The above CG setting information includes information about at least one CG subset representing at least one CG resource that is individually set within each cycle, Transmitting an activation message to the terminal, which includes information indicating activation of at least one CG subset; wherein at least one CG subset is activated based on the activation message, A base station receiving a first confirmation message from the terminal in response to the above activation message.

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