Method and apparatus for utilizing low power-wake up radio in mobile communication system

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. This method performed by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving, from a base station, configuration information for mitigation of a first measurement for radio link monitoring (RLM) or beam failure detection (BFD), wherein the first measurement is associated with low power (LP)-wake up radio (WUR) of the UE; receiving, from the base station, a signal for the first measurement associated with the LP-WUR; and determining whether to mitigate a second measurement associated with a main radio (MR) of the UE on the basis of a measurement value identified by using the signal and the configuration information.

Description

Method and device for utilizing low-power wake-up radio in mobile communication systems

[0001] The present disclosure relates to terminal and base station operations in a wireless communication system, and more particularly, to a method and device for utilizing a low-power wake-up radio in a mobile 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] According to one embodiment of the present disclosure, a device and method for effectively providing a service in a mobile communication system are provided.

[0009] According to one embodiment, a method performed by a user equipment (UE) in a wireless communication system may include the steps of: receiving, from a base station, configuration information for relaxation of a first measurement for radio link monitoring (RLM) or beam failure detection (BFD), wherein the first measurement is associated with a low power (LP)-wake up radio (WUR) of the UE; receiving, from the base station, a signal for the first measurement associated with the LP-WUR; and determining, based on a measurement value identified using the signal and the configuration information, whether to relax a second measurement associated with a main radio (MR) of the UE.

[0010] According to one embodiment of the present disclosure, a device and method for effectively providing a service in a wireless communication system can be provided.

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

[0012] FIG. 1 is a diagram illustrating a next-generation mobile communication system structure that supports network energy saving according to one embodiment of the present disclosure.

[0013] FIG. 2 is a diagram for explaining the NES mode concept of a base station or cell according to one embodiment of the present disclosure.

[0014] FIG. 3 is a diagram illustrating a WUS transmission procedure of a terminal according to an embodiment of the present disclosure.

[0015] FIG. 4 is a diagram illustrating a transmission procedure of a WUS transmitted by a base station to a terminal according to an embodiment of the present disclosure.

[0016] FIG. 5 is a diagram illustrating a method for a terminal to transmit / receive signals and perform RLM / BFD Measurement Relaxation when operating in Connected mode according to an embodiment of the present disclosure.

[0017] FIG. 6 is a diagram illustrating a method for a terminal to perform measurements for MR and LR according to an embodiment of the present disclosure.

[0018] FIG. 7 is a diagram illustrating a method for a terminal to perform measurement and reporting operations for MR and LR according to an embodiment of the present disclosure.

[0019] FIG. 8 is a diagram illustrating a method for a terminal to perform measurement and reporting operations for MR and LR according to an embodiment of the present disclosure.

[0020] FIG. 9 is a diagram illustrating a method for a terminal to perform measurement and reporting operations for MR and LR according to an embodiment of the present disclosure.

[0021] FIG. 10 is a diagram illustrating a terminal configured with LR C-DRX and a terminal operation performed based on LR C-DRX according to an embodiment of the present disclosure.

[0022] FIG. 11 is a diagram illustrating the structure of a base station according to an embodiment of the present disclosure.

[0023] FIG. 12 is a diagram illustrating the structure of a terminal according to an embodiment of the present disclosure.

[0024] The operating principles of the present disclosure are described in detail below with reference to the attached drawings. In the following description of the present disclosure, detailed descriptions of related known functions or configurations will be omitted if they are deemed to unnecessarily obscure the gist of the present disclosure. Furthermore, the terms described below are defined based on the functions of the present disclosure and may vary depending on the intent or custom of the user or operator. Therefore, their definitions should be based on the overall content of this specification.

[0025] The terms used in the following description to identify connection nodes, terms referring to network entities, terms referring to messages, terms referring to interfaces between network entities, and terms referring to various identification information are provided as examples for convenience of explanation. Therefore, the present disclosure is not limited to the terms described below, and other terms referring to objects with equivalent technical meanings may be used.

[0026] Hereinafter, the base station is an entity that performs resource allocation of the terminal, and may be at least one of a gNode B, an eNode B, a Node B, a BS (Base Station), a wireless access unit, a base station controller, or a node on a network. The terminal may include a UE (User Equipment), an MS (Mobile Station), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing a communication function. 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. In addition, although the LTE or LTE-A system may be described below as an example, the embodiments of the present disclosure may also be applied to other communication systems having similar technical backgrounds or channel types. For example, the 5th generation mobile communication technology (5G, new radio, NR) developed after LTE-A may be included in a system to which the embodiments of the present disclosure may be applied, and 5G below may also be a concept that includes existing LTE, LTE-A, and other similar services. Furthermore, the present disclosure may be applied to other communication systems with some modifications, as determined by those skilled in the art, without significantly departing from the scope of the present disclosure. In this case, it will be understood that each block of the processing flow diagrams and combinations of the flow diagrams can be executed by computer program instructions.

[0027] These computer program instructions may be installed in a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, so that the instructions executed by the processor of the computer or other programmable data processing apparatus create means for performing the functions described in the flowchart block(s). These computer program instructions may also be stored in a computer-available or computer-readable memory that can be directed to a computer or other programmable data processing apparatus to implement functions in a particular manner, so 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). The computer program instructions may also be installed on a computer or other programmable data processing apparatus, so that a series of operational steps are performed on the computer or other programmable data processing apparatus to create a computer-implemented process, so that the instructions executing on the computer or other programmable data processing apparatus can provide steps for performing the functions described in the flowchart block(s).

[0028] 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.

[0029] For convenience of explanation, this disclosure uses terms and names defined in the 5GS and NR standards, which are standards defined by the 3rd Generation Partnership Project (3GPP). However, this disclosure is not limited to these terms and names and can be equally applied to wireless communication networks that comply with other standards. For example, this disclosure can be applied to the 3GPP 5GS / NR (5th generation mobile communication standard).

[0030] The present disclosure relates to a signal transmission and reception method and device for supporting idle and inactive mode operations of a terminal in an environment where a base station and a terminal can transmit a wake-up signal (WUS) to wake up the terminal, base station, or cell transceiver terminal when the terminal or cell enters a sleep mode in a next-generation Network Energy Saving (NES) system supporting power saving technology.

[0031] Meanwhile, in a non-terrestrial network system, methods and devices for supporting mobility using location information of terminals have been proposed, and for terminals that can utilize these, the need for a mobility support method that utilizes relative location measurement between the terminal and the network, which is different from the existing signal strength-based method, has emerged.

[0032] The present disclosure provides a signal transmission method and device for supporting idle and inactive mode operations of a terminal using a wake-up radio capable of transmitting and receiving a low-power wake-up signal to support power saving mode operation of a network in a wireless communication system.

[0033] An embodiment of the present disclosure may include an operation in which a terminal receives a reference signal from adjacent cells and base stations through wake-up radio (WUR) and new radio (NR) according to certain conditions, receives a signal including a certain trigger condition from a base station, determines whether a measurement value of the reference signal satisfies the condition, determines the trigger condition, and operates one RAT in a low power mode.

[0034] The technical problems to be achieved in various embodiments of the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by a person having ordinary skill in the technical field to which the present disclosure pertains from the description below.

[0035] According to one embodiment of the present disclosure, when more than one RAT is used in a wireless communication system, power consumption of a terminal can be further reduced by operating one RAT in a low power mode.

[0036] FIG. 1 is a diagram illustrating a next-generation mobile communication system structure that supports network energy saving according to one embodiment of the present disclosure.

[0037] Referring to FIG. 1, a next-generation mobile communication system supporting network energy saving according to an embodiment may include a next-generation base station (1-01, g Node B, hereinafter referred to as gNB, Node B or base station), a cell (1-06, 1-07, 1-08), and / or a terminal (1-09, User Equipment (UE)). For example, a gNB may include a CU (1-02, Central Unit) and one or more DUs (1-03, 1-04, Distributed Units).

[0038] In one embodiment, one CU can support one or more DUs, and one DU (1-03, 1-04) can support one cell (1-06, 1-07, 1-08), or one or more cells (1-06, 1-07, 1-08).

[0039] In one embodiment, the UE (1-09) can access an external network via a gNB through a cell.

[0040] FIG. 2 is a diagram for explaining the NES mode of a base station or cell according to one embodiment of the present disclosure.

[0041] Referring to FIG. 2, a base station supporting a Wake Up Radio (WUR) function according to an embodiment may be referred to as a WUR BS (2-1), and a terminal supporting the Wake Up Radio (WUR) function may be referred to as a WUR UE (2-4). For example, the WUR BS (2-1) may include a Main Radio (2-2, MR) for performing wireless communication with the WUR UE (2-4) and a WUR (2-3) for performing a Wake Up operation. For example, the Main Radio (2-2) for performing wireless communication may be replaced with the term Main Radio module (or circuit), and the WUR (2-3) for performing a Wake Up operation may be replaced with the term WUR module (or circuit). For example, the WUR BS (2-1) may include a circuit (e.g., a transceiver) for performing wireless communication and a circuit (e.g., a transceiver) for performing a Wake Up operation.

[0042] For example, a WUR UE (2-4) may include a Main Radio (2-5, MR) for performing wireless communication with a WUR BS (2-1) and a WUR (2-6) for performing a Wake Up operation. For example, MR (2-5) may be replaced with the term Main radio module (or circuit), and WUR (2-6) may be replaced with the term WUR module (or circuit). For example, a WUR UE (2-4) may include a circuit (e.g., a transceiver) for performing wireless communication and a circuit (e.g., a transceiver) for performing a Wake Up operation.

[0043] For example, the MR (2-2) of the WUR BS (2-1) can perform wireless communication with the MR (2-5) of the WUR UE (2-4) or other UE, and the WUR (2-3) of the WUR BS (2-1) can perform wireless communication with the WUR (2-6) of the WUR UE (2-4).

[0044] According to one embodiment of the present disclosure, the Main Radio may be a first wireless communication circuit, and the WUR may be a second wireless communication circuit for the WUR.

[0045] According to one embodiment of the present disclosure, the WUR may be a single but logically distinct module, rather than two physically different modules as part of the MR.

[0046] According to one embodiment of the present disclosure, WUR may be a part of MR, both physically and logically.

[0047] In the present disclosure, WUR may be referred to as LP-WUR with Low Power attached, and may be referred to as Low Power Radio, LR, or LPR.

[0048] The WUR BS and / or the WUR UE may be in at least one of the following operational configuration states (or operational states): As another example, the WUR BS and the WUR UE may have at least one of the following operational configuration states (or operational states):

[0049] 1. Full On state where both MR and WUR are turned on (e.g. both MR circuit and WUR circuit are turned on)

[0050] 2. MR On state where only MR is on and WUR is off (e.g. MR circuit is off, WUR is on)

[0051] 3. Deep Sleep state where MR is (fully or partially) turned off and only WUR is turned on (i.e. MR circuit is at least partially turned off and WUR is turned on).

[0052] 4. Full Off state where both MR and WUR are (completely or partially) turned off (e.g. both MR circuit and WUR circuit are turned off)

[0053] 5. Light Sleep state in which the MR is turned on but does not transmit some signals, such as broadcast signals such as SSB and SIB, thereby saving power (e.g., the MR circuit is turned on but does not transmit signals).

[0054] According to one embodiment, the Deep Sleep mode of the terminal may be defined by at least one of the following definitions:

[0055] - For example, a mode in which a terminal (e.g., WUR terminal) turns off all or part of the circuits and operations related to MR, so that it cannot perform wireless communication at all through MR, and performs cellular wireless communication through LP-WUR.

[0056] - A mode in which the terminal mostly turns off all or part of the circuits and operations related to the MR and does not perform wireless communication via the MR, but only transmits and receives messages via LP-WUR. However, the terminal may wake up briefly and perform signal reception via the MR during designated resources determined by the network. For example, the designated resources may be resources such as periodic paging occasions for transmitting and / or receiving paging, etc.

[0057] FIG. 3 is a diagram illustrating a WUS transmission procedure of a terminal according to an embodiment of the present disclosure.

[0058] Referring to FIG. 3, a terminal (3-1) according to one embodiment can receive a signal (3-4) from a serving cell base station (e.g., a base station supporting a serving cell (3-2)) to which the terminal (3-1) is connected (connected). For example, the signal (3-4) can include configuration information including conditions for the terminal (3-1) to transmit a WUS.

[0059] According to one embodiment of the present disclosure, the terminal (3-1) can receive from the serving cell (3-2) (or the serving cell base station) a condition for transmitting WUS using a measurement value for the serving cell (3-2) or an adjacent cell (3-3) through a signal (3-4). The serving cell (3-2) (or the serving cell base station) can set various conditions such as deriving (or identifying) a reference signal and a measurement value of a cell by measuring a reference signal (e.g., a synchronization signal block (SSB) or a channel state information-reference signal (CSI-RS)) designated to the terminal (3-1), and comparing the derived measurement value with a threshold value set by the serving cell. The terminal can be set to be triggered so that the serving cell (3-2) (or the serving cell base station) transmits WUS according to the measurement result by setting various conditions.

[0060] According to one embodiment, in order for a terminal (3-1) to successfully transmit a WUS to adjacent cells, a serving cell (or a base station to which the serving cell belongs) may need to provide the terminal with resource information that enables the adjacent cells to receive the WUS.

[0061] According to one embodiment, a serving cell can identify how a plurality of neighboring cells having overlapping coverage within its coverage can receive WUS through what resources (e.g., time, frequency) and in what manner (e.g., periodic, aperiodic, ...), respectively, and share the identified information about the plurality of neighboring cells with each other. For example, a base station supporting a serving cell can receive, from the first base station, a configuration for a WUS of a first base station supporting a first neighboring cell among neighboring cells. For example, a base station supporting a serving cell can receive, from a second base station that is distinct from the first base station, a configuration for a WUS of a first base station supporting a first neighboring cell among neighboring cells.

[0062] According to one embodiment, a base station of a serving cell may transmit a signal including at least some of the following WUS resource information to a terminal. For example, a base station supporting a serving cell may transmit a signal including at least one of the following WUS resource information elements (IEs).

[0063] - Resource information such as time / frequency at which the terminal can transmit WUS.

[0064] ■ Resource information including information about subframe / raioframe / slot time that has a certain rule that repeats periodically, for example.

[0065] ■ Resource information including information on the WUS transmission time duration, expressed in terms of absolute time, number of slots, number of frames, etc.

[0066] ■ Resource information including information about the time interval between the time of receiving signal (3-4) and the time at which the terminal can transmit WUS, for indicating the start time at which the terminal can transmit WUS, after a certain period of time from the time of receiving signal (3-4). For example, the time interval can be expressed as an absolute time, number of slots, number of frames, and / or a timer.

[0067] ■ Resource information, including information about the ID (identification) of a frequency band indicating (representing) a specified frequency band, for example;

[0068] ■ Resource information including, for example, the ID of the resource block indicating (indicating) the start frequency, the ID or parameter indicating (indicating) the frequency bandwidth, and / or information about the number of frequency bandwidths per unit resource block.

[0069] ■ Resource information including, for example, the ID of the reference frequency to indicate (indicate) the starting frequency away from the reference frequency, the bandwidth indicating (indicating) the difference between the reference frequency and the starting frequency, and / or the number of frequency bandwidths per unit resource block.

[0070] - A sequence ID and / or a list of sequence IDs that can specify sequences that can be transmitted to WUS (or sequences that can be used for WUS transmission).

[0071] - A list of information IDs and / or information IDs indicating (indicating) the types of information that can be transmitted to WUS (or that can be transmitted using WUS).

[0072] - A list of condition IDs and / or condition IDs indicating the type of condition that can transmit WUS (or the conditions under which WUS can be transmitted).

[0073] - An indication that the terminal can transmit WUS when the base station is operating in Deep Sleep mode.

[0074] At least some of the WUS resource information described above may be information about the base station transmitting the signal (3-4). For example, at least one of the WUS resource information IEs described above may be based on information about the base station transmitting the signal (3-4).

[0075] At least some of the WUS resource information described above may be information about a neighboring base station (or cell) of the base station transmitting the signal (3-4). In this case, a base station ID, a cell ID, a base station ID list, and / or a cell ID list may be included in the information about the neighboring base station (or cell).

[0076] At least some of the WUS resource information described above may be applicable to one or more base stations or cells. In this case, a list of base station IDs and / or cell IDs that can use WUS transmission information (e.g., WUS resource information) may be included in the WUS transmission information.

[0077] At least some of the WUS resource information described above may be substantially equally applicable to all adjacent base stations or cells. (cell common information) In this case, the WUS resource may include an indicator (e.g., 1-bit indication) informing the terminal that at least some of the WUS resources are cell common information. In other words, at least some of the WUS resource information may be commonly applied to cells.

[0078] At least some of the WUS resource information described above may have a structure and format similar to or substantially identical to the PRACH (Physical Random Access Channel) configuration information.

[0079] According to one embodiment, the WUS transmitted by the terminal may include at least some of the following information. For example, the WUS transmitted by the terminal may include at least one of the following IEs.

[0080] - Sequence transmitted by the terminal to WUS

[0081] - ID of the terminal that transmitted WUS

[0082] - Part of the ID of the terminal that transmitted the WUS

[0083] - Purpose ID (or indicator) that can identify the purpose of the WUS transmitted by the terminal

[0084] ■ For example, a terminal may transmit a WUS to request SSB transmission, and may transmit a destination ID indicating that it is a WUS transmission to request SSB transmission.

[0085] ■ For example, a terminal can transmit a WUS for handover and transmit a purpose ID indicating that it is transmitting a WUS for handover.

[0086] The purpose of the WUS described above is merely an example, and the present disclosure is not limited thereto. The purpose for which a terminal transmits a WUS may vary. For example, a terminal may transmit a WUS to request transmission of a CSI-RS, and may transmit a purpose ID (or indicator) indicating that the WUS transmission is for requesting transmission of a CSI-RS.

[0087] In one embodiment, the destination ID that can be included in the WUS transmitted by the terminal may be specified in the standard and known in advance by both the terminal and the base station. For example, the destination ID (or the indicator indicating the destination) may be preset for each terminal and the base station. In another example, the destination ID (or the indicator indicating the destination) may be set via radio resource control (RRC) signaling (or a higher layer). For example, the destination ID (or the indicator indicating the destination) may be set for the terminal by the base station.

[0088] According to one embodiment, the destination ID that can be included in the WUS transmitted by the terminal may be set to the base station and the terminal by a designated network entity of the core network (e.g., access and mobility management function (AMF)).

[0089] According to one embodiment, the destination ID that can be included in the WUS transmitted by the terminal may be set by the base station to the terminal. For example, the destination ID may be included in a broadcast signal transmitted by the base station to the terminal (e.g., a master information block (MIB) and / or a system information block (SIB) included in an SSB). For example, the destination ID may be included and transmitted in a unicast signal transmitted by the base station specifically to the terminal (e.g., an RRC signal, a media access control (MAC) signal, and / or a PHY signal).

[0090] According to one embodiment, information (or configuration information) that can be set to a terminal by a network entity (e.g., AMF, etc.) and / or a base station may include an indicator that can distinguish a cell currently operating in Deep Sleep mode. For example, a 1-bit indicator may be included within each cell information. In one example, the 1-bit indicator may indicate whether a cell is operating in Deep Sleep mode, and the information (or configuration information) may include each cell information.

[0091] According to one embodiment, information (or configuration information) that can be set to a terminal by a network entity (e.g., AMF, etc.) and / or a base station may include an indicator that can distinguish a cell in which the MR is currently on. For example, a 1-bit indicator may be included in each cell information. In one example, the 1-bit indicator may indicate whether the MR is on, and the information (or configuration information) may include each cell information.

[0092] According to one embodiment, information (or configuration information) that can be configured to a terminal by a network entity (e.g., AMF, etc.) and / or a base station may implicitly imply that all cells included in the information that can be configured are operating in deep sleep mode. For example, the base station may configure and transmit information (or configuration information) only for cells currently operating in deep sleep mode. For example, the configuration information may include information about at least one cell, and at least one cell may be a cell operating in deep sleep mode. In this case, the terminal may implicitly identify at least one cell as a cell in deep sleep mode based on the configuration information.

[0093] According to one embodiment, information that can be set to the terminal by a network entity (e.g., AMF, etc.) and / or a base station may be included in a broadcast signal transmitted by the base station to the terminal (e.g., a master information block (MIB) included in an SSB, and / or any system information block (SIB)).

[0094] According to one embodiment, information that can be set to a terminal by a network entity (e.g., AMF, etc.) and / or a base station may be transmitted within a unicast signal (e.g., an RRC signal, a MAC signal, and / or a PHY signal) that the base station transmits specifically to the terminal.

[0095] According to one embodiment, resource information for WUS transmission of a terminal may be provided in advance to the terminal from the base station via a predetermined signal (e.g., a broadcast signal or an RRC signal) prior to the transmission time of a trigger setting signal for WUS transmission. That is, the resource information may be set for the terminal prior to the trigger setting signal.

[0096] As another example, resource information for WUS transmission may be included in one signal (e.g., an RRC signal) together with a trigger setting signal for WUS transmission.

[0097] According to one embodiment of the present disclosure, the terminal (3-1) can determine whether the WUS trigger condition set through the WUS setup signal (3-3) transmitted by the base station (3-2) is satisfied based on the reference signals of the base stations transmitted by the serving cell and neighboring cells (e.g., the SSB transmitted by the MR or the LP-SS (Low Power Synchronization Signal), which is a designated synchronization signal transmitted as LP-WUR) (3-5). (Measure & Evaluate if the Trigger condition is met)

[0098] For example, the terminal (3-1) can receive reference signals of base stations (e.g., base station (3-2)) transmitted by the serving cell and adjacent cells, measure representative values ​​of each cell (e.g., measurement values ​​such as Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Channel Quality Indicator (CQI), Signal-to-Interference-plus-Noise Ratio (SINR), and / or Signal-to-Noise Ratio (SNR)) through the received reference signals, and compare the measured representative values ​​with a set WUS trigger condition to determine whether WUS transmission is triggered (3-5).

[0099] According to one embodiment of the present disclosure, when it is determined that a WUS trigger condition is satisfied, the terminal (3-1) can transmit an LP-WUS signal to neighboring cells through the set WUS resource (3-6).

[0100] According to one embodiment of the present disclosure, if a neighboring cell that has received a WUS is operating in sleep mode, the neighboring cell may exit sleep mode by making a decision based on at least one of the following conditions (3-7). For example, if the neighboring cell's base station is in deep sleep mode, the main radio (MR) may be woken up. For example, if the neighboring cell's base station is in light sleep mode, SSB / SIB transmission may be initiated.

[0101] - When receiving WUS, it wakes up unconditionally.

[0102] - Occurs when the received power of WUS exceeds a certain threshold.

[0103] - Occurs when the received power of the WUS exceeds a certain threshold. The specific threshold may be set by a network entity of the core network (e.g., AMF).

[0104] - Occurs when the received power of WUS exceeds a certain threshold provided by the neighboring cell.

[0105] Afterwards, the MR of the neighboring cell that has woken up can transmit a synchronization signal block (SSB) to the neighboring terminals (3-8).

[0106] FIG. 4 is a diagram illustrating a WUS transmission procedure transmitted by a base station to a terminal according to one embodiment of the present disclosure.

[0107] Referring to FIG. 4, the terminal (4-1) and the serving cell (4-2) according to one embodiment may each include MRs (4-3, 4-5) and / or LP-WURs (4-4, 4-6) as components. For example, the terminal (4-1) may include MRs (4-3) (or MR circuits) and / or LP-WURs (4-4) (or LP-WUR circuits). For example, the serving cell (4-2) (or a base station supporting the serving cell) may include MRs (4-5) and / or LP-WURs (4-6).

[0108] According to one embodiment, a serving cell (4-2) can transmit a WUS (4-8) to a terminal (4-1) operating in Deep Sleep mode to cause it to exit Deep Sleep mode (4-9) and wake up MR (4-10).

[0109] For example, LP-WUS can also be used as a downlink signal to trigger at least one of the following actions:

[0110] 1. When a terminal (4-1) in connected mode receives a downlink LP-WUS signal, the downlink LP-WUS signal can be used as a signal to trigger the terminal (4-1) to receive a PDCCH (physical downlink control channel) of the network in the DRX On duration that arrives thereafter.

[0111] A. In order to use the downlink LP-WUS signal as in 1. above, the base station (e.g., the base station supporting the serving cell (4-2)) can transmit LP-WUS configuration information including an indicator informing the terminal (4-1) to perform the operation of 1. above in advance to the terminal via MR or LP-WUR when receiving the LP-WUS.

[0112] 2. When an Idle / Inactive mode terminal (4-1) receives a downlink LP-WUS signal, the downlink LP-WUS signal can be used as a signal to trigger the terminal (4-1) to receive a PEI signal indicating that there is paging in the network during the subsequent Paging early indication (PEI) signal reception section.

[0113] A. In order to use the downlink LP-WUS signal as in 2. above, the base station can transmit LP-WUS configuration information including an indicator informing the terminal (4-1) to perform the operation of 2. above when receiving the LP-WUS to the terminal in advance via MR or LP-WUR.

[0114] FIG. 5 is a diagram illustrating a method for a terminal to perform signal transmission / reception and RLM / BFD Measurement Relaxation when operating in Connected mode according to an embodiment of the present disclosure.

[0115] For example, the terminal (5-1) of Fig. 5 may be a terminal having LP-WUR. For example, the signal transmission / reception and RLM (radio link monitoring) / BFD (beam failure detection) Measurement Relaxation operations performed by the terminal in the Connected mode described in 5-4 of Fig. 5 may be operations performed to reduce RRM (radio resource management) Measurement of MR or LP-WUR to save power.

[0116] Referring to FIG. 5, a serving cell (5-2) can set conditions for a terminal (5-1) to initiate an operation that can relax RLM / BFD measurements, and can provide parameters (5-3) to be used for the conditions (used in configuring the conditions). For example, a serving cell (5-2) can set trigger conditions for relaxing RLM / BFD measurements to a terminal (5-1) and transmit parameters for the conditions. (Configuration of RLM / BFD Measurements) (Relax. Conditions and parameters)

[0117] According to one embodiment of the present disclosure, RLM / BFD Measurement Relaxation, or RLM / BFD measurement relaxation operation, may be an operation that increases the reference signal measurement period of each radio access technology (RAT) periodically performed by the terminal (5-1) by several times compared to the existing one. At this time, the reference signal measurement of each RAT may be performed to periodically update the measurement values ​​of different cells that change over time due to the location of the terminal, etc. In addition, RLM / BFD Measurement Relaxation, or reference signal measurement relaxation operation, may be an operation that is effective in reducing terminal power consumption by not performing signal measurement for RLM / BFD determination for a specific RAT, and also allowing the terminal to operate in sleep mode for a longer period of time.

[0118] According to one embodiment of the present disclosure, a terminal (5-1) operating in a connected mode can measure an SSB (5-5) of an MR transmitted by the serving cell and adjacent cells and an LP-SS (5-6) of an LP-WUR while connected to the serving cell (5-4).

[0119] According to one embodiment of the present disclosure, a base station (5-2) inputs threshold values ​​included in a preset signal (5-3) or included in a broadcast signal (e.g., SIB) as conditions for performing RLM / BFD Measurement Relaxation, and inputs measured values ​​(5-4) of MR SSB and LP-WUR LP-SS of the cells to these threshold values, thereby allowing the terminal (5-1) to determine whether conditions for performing RLM / BFD Measurement Relaxation are satisfied (5-7). For example, the terminal (5-1) can input threshold values ​​and measured values ​​(5-4) into a specified equation to determine whether conditions for performing RLM / BFD Measurement Relaxation are satisfied.

[0120] According to one embodiment, if the conditions for performing RLM / BFD Measurement Relaxation are met, the terminal (5-1) can perform RLM / BFD Measurement Relaxation for the RAT for which the conditions for performing RLM / BFD Measurement Relaxation are met (5-8).

[0121] According to one embodiment of the present disclosure, the terminal (5-1) may be configured to determine whether at least one of the following conditions (some, a combination, or all) is satisfied by the base station. The terminal (5-1) may perform RLM / BFD Measurement Relaxation for the RAT and Cell for which the configured conditions are satisfied.

[0122] For example, when the terminal (5-1) determines that the value measured in the designated RAT satisfies Low mobility (Condition 1 [1. Low mobility of MR] or Condition 2 [2. Low mobility of LR] below), it can be configured to perform RLM / BFD Measurement Relaxation. In order to determine Low mobility conditions, the terminal (5-1) can be configured with thresholds of cell representative values ​​and / or specific reference signal (e.g., SSB, CSI-RS) measurement values ​​(e.g., Reference Signals Received Power (RSRP), Reference Signal Received Quality (RSRQ), Channel Quality Indicator (CQI), signal-to-noise interference ratio (SINR), signal-noise ratio (SNR)). When the terminal (5-1) satisfies Low mobility conditions, it can perform RLM / BFD Measurement Relaxation for the cell that satisfies the condition and the RAT that satisfies the condition.

[0123] According to one embodiment, the terminal (5-1) may be configured to perform RLM / BFD Measurement Relaxation when it is determined that a value measured in a designated RAT satisfies a good serving cell (condition 3 [3. good serving cell of MR] or condition 4 [4. good serving cell of LR] below). The terminal (5-1) may be configured to set a threshold of a cell representative value or a specific reference signal (e.g., SSB, CSI-RS) measurement value (e.g., RSRP, RSRQ, CQI, SINR, SNR) for determining good serving cell conditions, and when a good serving cell condition is satisfied, RLM / BFD Measurement Relaxation may be performed on a cell satisfying the condition and on a RAT satisfying the condition.

[0124] According to one embodiment, the terminal (5-1) may be configured to perform RLM / BFD Measurement Relaxation when it is determined that the value measured in the designated RAT satisfies both condition 3 [3. good serving cell of MR] or condition 4 [4. good serving cell of LR] below a good serving cell and condition 1 [1.] or condition 2 [2.] below a low mobility condition. The terminal (5-1) may be configured to perform RLM / BFD Measurement Relaxation for determining the good serving cell and low mobility conditions, and may be configured to perform thresholds of cell representative values ​​or specific reference signal (e.g., SSB, CSI-RS) measurement values ​​(e.g., RSRP, RSRQ, CQI, SINR, SNR) in order to determine the good serving cell and low mobility conditions, and when both the good serving cell and low mobility conditions are satisfied, the terminal (5-1) may perform RLM / BFD Measurement Relaxation for a cell that satisfies the conditions and for a RAT that satisfies the conditions.

[0125] 1. Low mobility of MR (Serving MR measurement indicates the UE has low mobility)

[0126] According to one embodiment of the present disclosure, the terminal (5-1) can periodically measure the MR reference signal of the serving cell and update a designated reference value (Srxlev) according to the conditions according to [Table 1] below. Ref ) and the current measurement value (Srxlev) transmitted by the base station as a signal (5-3) (e.g. MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, DCI (downlink control information), etc.) MR threshold (S SearchDeltaP ) can be compared. If the terminal (5-1) satisfies the conditions according to Table 1 below based on the comparison results, RLM / BFD Measurement Relaxation can be performed. The terminal operation according to Condition 1 can be set and / or defined as in [Table 1] below.

[0127]

[0128] 2. Low mobility of LR (Serving LR measurement indicates the UE has low mobility)

[0129] According to one embodiment of the present disclosure, the terminal (5-1) periodically measures the LR reference signal of the serving cell and provides a designated reference value (Srxlev) that is updated according to the conditions according to [Table 2]. Ref ) and the current measurement value (Srxlev) transmitted by the base station as the signal (5-3) (e.g. MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE (control element), DCI, etc.) LR threshold (S SearchDeltaP) can be compared. If the terminal (5-1) is determined to satisfy the conditions according to [Table 2] below based on the comparison results, the terminal can perform RLM / BFD Measurement Relaxation. The terminal operation according to this condition 2. can be set and / or defined as in [Table 2] below.

[0130]

[0131] 3. Good serving cell of MR

[0132] According to one embodiment of the present disclosure, the terminal (5-1) periodically measures the MR reference signal of the serving cell, and updates the current measurement value (Srxlev, Squal) according to the conditions according to [Table 3] below, and transmits (includes in the transmission) the MR threshold value (S) transmitted by the base station as a signal (5-3) (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE (control element), DCI, etc.). SearchThresholdP , S SearchThresholdQ ) can be compared. If the terminal (5-1) is determined to satisfy the conditions according to [Table 3] below based on the comparison results, the terminal (5-1) can perform MR RLM / BFD Measurement Relaxation. The terminal operation according to this condition 3. can be set and / or defined as in [Table 3] below.

[0133]

[0134] In one embodiment, the parameter Q in The terminal (5-1) can be defined as a reception signal strength value at which the terminal can generally receive the Downlink Radio Link quality with high reliability. For example, Q inis set to have a received signal strength value (e.g., RSRP, RSRQ, CQI, SNR, SINR, etc.) of the reference signal corresponding to BLERin (In-Sync Block Error Rate) of about 2%. Q in The signal for setting may be a signal received by the terminal (5-1) prior to the signal (5-3), may be included in a signal transmitted by the base station to the terminal (5-1) (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, and / or DCI, etc.), or may be included in the above 5-3.

[0135] According to one embodiment, the parameter X may be an offset value of the received signal strength. For example, the parameter X may be an offset value (dB) included in a designated signal that the base station sets to the terminal (5-1). For example, the designated signal may be a signal that the terminal (5-1) received before the signal (5-3), and the designated signal may be included in a signal (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, and / or DCI, etc.) transmitted by the base station to the terminal (5-1). As another example, the designated signal may be included in the signal (5-3).

[0136] 4. Good serving cell of LR

[0137] According to one embodiment of the present disclosure, the terminal (5-1) periodically measures the LR reference signal of the serving cell, and updates the current measurement value (Srxlev, Squal) according to the conditions according to [Table 4] below, and transmits (includes in the transmission) the LR threshold value (S) transmitted by the base station as a signal (5-3) (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, DCI, etc.). SearchThresholdP , S SearchThresholdQ) can be compared. If the terminal (5-1) determines that the conditions according to Table 4 below are satisfied based on the comparison results, the terminal can perform RLM / BFD Measurement Relaxation. The terminal operation according to this condition 4. can be set and / or defined as in [Table 4] below.

[0138]

[0139] In one embodiment, the parameter Q in The terminal (5-1) can be defined as a reception signal strength value at which the terminal can generally receive the Downlink Radio Link quality with high reliability. For example, parameter Q in can be set to have a received signal strength value (e.g., RSRP, RSRQ, CQI, SNR, SINR, etc.) of a reference signal corresponding to a BLERin (In-Sync Block Error Rate) of about 2%. For example, the signal for setting Qin may be a signal received by the terminal (5-1) in advance of the signal (5-3), and may be included in a signal (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, DCI, etc.) transmitted by the base station to the terminal (5-1), or may be included in the signal (5-3).

[0140] According to one embodiment, the parameter X may be an offset value of the received signal strength. For example, the parameter X may be an offset value (dB) included in a designated signal that the base station sets to the terminal (5-1). For example, the designated signal may be a signal that the terminal (5-1) received before the signal (5-3), and the designated signal may be included in a signal (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, DCI, etc.) transmitted by the base station to the terminal (5-1). As another example, the designated signal may be included in the signal (5-3).

[0141] 5. Event A1 of MR (Serving MR becomes better than threshold)

[0142] According to one embodiment of the present disclosure, the terminal (5-1) can compare the threshold value transmitted (included in the signal (5-3) (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, and / or DCI, etc.) by the base station with the measurement value of the serving cell. If the MR measurement value of the serving cell is determined to be greater than the threshold value, the terminal (5-1) can perform RLM / BFD Measurement Relaxation. The terminal operation according to this condition 1. can be set and / or defined as shown in Table 5 below.

[0143]

[0144] According to one embodiment, event A1 may of course be replaced with a condition that compares a threshold and a cell measurement value, as shown in [Table 6] and [Table 7] below.

[0145]

[0146]

[0147] According to one embodiment, event A1 may of course be replaced with a condition that compares two thresholds and two cell measurements, as shown in Table 8 below.

[0148]

[0149] 6. Event A1 of LR (Serving LR becomes better than threshold)

[0150] According to one embodiment of the present disclosure, the terminal (5-1) can compare the threshold value transmitted (included in the signal (5-3) (e.g., MIB, SIB, RRC Reconfiguration, RRC Release, MAC-CE, DCI, etc.) by the base station with the measurement value of the serving cell. If the terminal (5-1) determines that the LR measurement value of the serving cell is greater than the threshold value, the terminal can perform RLM / BFD Measurement Relaxation. The terminal operation according to this condition 2. can be set and / or defined as shown in [Table 9] below.

[0151]

[0152] According to one embodiment, event A1 may of course be replaced with a condition that compares a threshold and a cell measurement value as in [Table 10] and [Table 11] below.

[0153]

[0154]

[0155] According to one embodiment, event A1 may of course be replaced with a condition that compares two thresholds and two cell measurements in [Table 12] as follows.

[0156]

[0157] FIG. 6 is a diagram illustrating a method for a terminal to perform measurement operations for MR and LR according to an embodiment of the present disclosure.

[0158] Referring to FIG. 6, a terminal (6-1), a serving cell (6-2), and a neighboring cell (6-3) according to one embodiment may each include MRs (6-4, 6-6, 6-8) and / or LP-WURs (6-5, 6-7, 6-9) as components. For example, the terminal (6-1) may include MRs (6-4) and / or LP-WURs (6-5). For example, the serving cell (6-2) may include MRs (6-6) and / or LP-WURs (6-7). For example, the neighboring cell (6-3) may include MRs (6-8) and / or LP-WURs (6-9).

[0159] According to one embodiment, the serving cell (6-2) can set a measurement objective including the frequencies of MR and LR that the terminal (6-1) can measure to the terminal (6-1) and provide parameters to be used for measurement (6-10).

[0160] According to one embodiment, a single Measurement Objective (MeasOject) may include at least some of the following information:

[0161] - Measurement frequency (e.g., ARFCN (Absolute Radio Frequency Channel Number) value, etc.) or a list of measurement frequencies

[0162] - Subcarrier spacing (SCS)

[0163] - Reference signal (e.g. SSB, CSI-RS, SS, On-off keying signal, etc.) reception time information

[0164] ■Start time, offset, cycle, measurement time length, etc.

[0165] - List of information on cells to be measured

[0166] ■ Cell ID

[0167] ■ Cell offset value, etc.

[0168] - Thresholds to be used for measurement

[0169] - Threshold values ​​to be used to derive cell values ​​during measurement

[0170] ■ The (maximum) number of beams to take the average,

[0171] ■ Threshold for selecting beams (only beams above the threshold are selected)

[0172] ■ Time length for Layer 1 (PHY layer) and / or Layer 3 (RRC layer) filtering, parameters to be entered into the filtering formula, etc.

[0173] According to one embodiment, the terminal (6-1) can receive MR SSB / CSI-RS signals of a serving cell (6-2) and neighboring cells (6-3) according to the received settings (6-12, 6-13), and can measure representative values ​​of cells based on at least one of the received MR SSB / CSI-RS signals (6-11).

[0174] According to one embodiment, the terminal (6-1) can receive LR SS and other synchronization signals of the serving cell (6-2) and neighboring cells (6-3) based on the received settings (6-15, 6-16), and can measure the representative values ​​of the cells based on the received LR SS (synchronization signal) and / or other synchronization signals (6-17).

[0175] FIG. 7 is a diagram illustrating a method for a terminal to perform measurement and reporting operations for MR and LR according to an embodiment of the present disclosure.

[0176] Referring to FIG. 7, a terminal (7-1), a serving cell (7-2), and / or a neighboring cell (7-3) according to an embodiment may each include MRs (7-4, 7-6, 7-8) and LP-WURs (7-5, 7-7, 7-9) as components. The serving cell (7-2) may set a measurement objective including the frequencies of MRs and LRs that the terminal can measure, and may provide parameters to be used for measurement (7-10).

[0177] According to one embodiment, a single measurement (Measurement Objective, hereinafter referred to as MeasOject) may include at least some of the following information:

[0178] - Measurement frequency (ARFCN value, etc.) or list of measurement frequencies

[0179] - Subcarrier spacing (SCS)

[0180] - Reference signal (e.g. SSB, CSI-RS, SS, On-off keying signal, etc.) reception time information

[0181] ■ Start time, offset, cycle, measurement time length, etc.

[0182] - List of information on cells to be measured

[0183] ■ Cell ID

[0184] ■ Cell offset value, etc.

[0185] - Threshold values ​​to be used for measurement

[0186] - Threshold values ​​to be used to derive cell values ​​during measurement

[0187] ■ The (maximum) number of beams to take the average,

[0188] ■ Threshold for selecting beams (only beams above the threshold are selected)

[0189] ■ Time length for Layer 1 (PHY layer) and / or Layer 3 (RRC layer) filtering, parameters to be entered into the filtering formula, etc.

[0190] According to one embodiment, the serving cell (7-2) may transmit a signal to the terminal (7-1) that instructs and sets conditions for triggering a measurement report and / or measurement values ​​to be reported, which cause the terminal (7-1) to report measurement values ​​to the base station when certain conditions are satisfied, according to the values ​​of each RAT and cell measured by the terminal (7-1) (7-11).

[0191] According to one embodiment, the serving cell (7-2) may set a trigger condition for a measurement report that causes the terminal (7-1) to transmit a measurement report to the base station when some or all of the following various conditions are satisfied by the terminal (7-1).

[0192] 1. MR Event A1 (MR Serving becomes better than threshold)

[0193]

[0194] 2. MR Event A2 (MR Serving becomes worse than threshold)

[0195]

[0196] 3 .MR Event A3 (MR Neighbor becomes offset better than SpCell(Serving))

[0197]

[0198] 4. MR Event A4 (MR Neighbor becomes better than threshold)

[0199]

[0200] 5 .MR Event A5 (MR SpCell(Serving) becomes worse than threshold1 and neighbour becomes better than threshold2)

[0201]

[0202] 6. MR Event A6 (MR Neighbour becomes offset better than SCell)

[0203]

[0204] 7. MR Event B1 (Inter RAT (LR) neighbour becomes better than threshold)

[0205]

[0206] 8. MR Event B2 (PCell (Serving) becomes worse than threshold1 and inter RAT (LR) neighbour becomes better than threshold2)

[0207]

[0208] 9. LR(LP-WUR) Event A1 (LR Serving becomes better than threshold)

[0209] 10. LR(LP-WUR) Event A2 (LR Serving becomes worse than threshold)

[0210] 11. LR(LP-WUR) Event A3 (LR Neighbour becomes offset better than LR Cell (Serving))

[0211] 12. LR(LP-WUR) Event A4 (LR Neighbour becomes better than threshold)

[0212] 13. LR(LP-WUR) Event A5 (LR SpCell(special cell)(Serving) becomes worse than threshold1 and neighbor becomes better than threshold2)

[0213] 14. LR(LP-WUR) Event A6 (LR Neighbor becomes offset better than SCell(secondary cell))

[0214] 15. LR(LP-WUR) Event B1 (Inter RAT (LR) neighbor becomes better than threshold)

[0215] 16. LR(LP-WUR) Event B2 (PCell(primary cell)(Serving) becomes worse than threshold1 and inter RAT (MR) neighbor becomes better than threshold2)

[0216] Events may be configured one or more times for measurement reporting of a single RAT, or one or more times for measurement reporting of more than one RAT.

[0217] In addition, the terminal (7-1) can compare the distance between base stations and the terminal (7-1) with a specified threshold value. If the specified condition is satisfied based on the comparison result, the distance condition (Event D1) for reporting the measurement can be set to the same measurement reporting condition as the above-mentioned measurement reporting condition for MR and LR, and can also trigger the measurement report.

[0218] For example, the terminal (7-1) may be configured to transmit a Measurement Report of MR of the serving cell (7-2) and neighboring cells (703) to the base station (7-2) when either of the MR Event A3 or LR Event A3 is satisfied. Through this, the serving cell (7-2) may determine a handover to a specific neighboring cell based on the measurement report via LR.

[0219] For example, the terminal (7-1) can be configured to transmit a Measurement Report of MR and LR of the serving cell (7-2) and neighboring cells (7-3) to the serving cell base station (7-2) when both MR Event A2 and LR Event A4 are satisfied. Through this, the serving cell (7-2) can identify a neighboring cell with good performance through LR when the quality of the serving cell is degraded, and can decide to handover to the neighboring cell with good performance based on information about the neighboring cell with good performance.

[0220] According to one embodiment, the base station may transmit an indicator or flag in the configuration information while setting an event condition for triggering transmission of a designated measurement report to the terminal (7-1), indicating that the event condition applies to both LR and MR. For example, the indicator or flag may indicate that the event condition applies to both LR and MR. For example, if the indicator is set to 1 or the flag is on, the terminal (7-1) may assign the event condition to the representative value of cells measured by LR as well as MR, and trigger a measurement report when MR or LR satisfies the event condition.

[0221] According to one embodiment, the base station may transmit a bitmap, which includes in the configuration information, a bitmap indicating that the event condition applies to both MR and LR while setting an event condition for triggering transmission of a designated measurement report to the terminal (7-1). The bitmap may be composed of a series of bits that can determine whether MR and LR are applied, respectively. For example, if the bitmap is composed of two bits and is of the form [MR, LR], each indicating whether the event condition applies to MR or LR, the terminal may substitute a representative value of measured cells for the RAT in which each bit is set to 1, and may trigger a measurement report if the event condition is satisfied.

[0222] In one embodiment, the measurement setup signal (7-10) and the measurement report setup signal (7-11) may be two different signals, or may be transmitted physically contained within one signal transmitted at a time.

[0223] According to one embodiment, the terminal (7-1) can receive MR SSB / CSI-RS signals of a serving cell (7-2) and neighboring cells (7-3) according to the received settings (7-13, 7-14), and can measure representative values ​​of cells based on the received MR SSB / CSI-RS signals (7-12).

[0224] According to one embodiment, the terminal (7-1) can receive LR SS and / or other synchronization signals of the serving cell (7-2) and neighboring cells (7-3) based on the received settings (7-16, 7-17), and can measure the representative values ​​of the cells based on the LR SS and / or other synchronization signals (7-15).

[0225] According to one embodiment, the terminal (7-1) can input the measured MR and LR cell representative values ​​of the serving cell (7-2) and adjacent cells (7-3) into the set measurement report trigger condition (7-11) and determine whether the measurement report trigger condition is satisfied. If the specified measurement report trigger condition is satisfied, the terminal (7-1) can generate measurement report information and transmit the measurement report information to the base station (7-19).

[0226] FIG. 8 is a diagram illustrating a method for a terminal to perform measurement and reporting operations for MR and LR according to an embodiment of the present disclosure.

[0227] Referring to FIG. 8, the terminal (8-1), the serving cell (8-2), and the adjacent cell (8-3) according to one embodiment may each include MRs (8-4, 8-6, 8-8) and LP-WURs (8-5, 8-7, 8-9) as components.

[0228] According to one embodiment, the serving cell (8-2) can set a measurement objective including the frequencies of MR and LR that the terminal can measure, and provide parameters to be used for measurement (8-10).

[0229] According to one embodiment, a single Measurement Objective (MeasOject) may include at least some of the following information:

[0230] - Measurement frequency (ARFCN value, etc.) or measurement frequency list

[0231] - Subcarrier spacing (SCS)

[0232] - Reference signal (e.g. SSB, CSI-RS, SS, On-off keying signal, etc.) reception time information

[0233] ■Start time, offset, cycle, measurement time length, etc.

[0234] - List of information on cells to be measured

[0235] ■ Cell ID

[0236] ■ Cell offset value, etc.

[0237] - Thresholds to be used for measurement

[0238] - Threshold values ​​to be used to derive cell values ​​during measurement

[0239] ■ The (maximum) number of beams to take the average,

[0240] ■ Threshold value for selecting beams (only beams above the threshold value are selected)

[0241] ■ Time length for Layer 1 (PHY layer) and / or Layer 3 (RRC layer) filtering, parameters to be entered into the filtering formula, etc.

[0242] According to one embodiment, the serving cell (8-2) can transmit to the terminal (8-1) a signal that triggers a conditional handover (CHO) to a cell that satisfies a specific condition without the need to perform any report to the base station, based on the values ​​of each RAT and cell measured by the terminal (8-1), and / or instructs and sets information about the cell and resources for CHO (8-11).

[0243] According to one embodiment, the serving cell (8-2) may be configured to trigger a conditional handover (CHO) to the corresponding target cell when some or all of the following various conditions are satisfied by the terminal (8-1).

[0244] 1. MR Event A1 (MR Serving becomes better than threshold)

[0245]

[0246] 2. MR Event A2 (MR Serving becomes worse than threshold)

[0247]

[0248] 3. MR Event A3 (MR Neighbour becomes offset better than SpCell(Serving))

[0249]

[0250] 4 .MR Event A4 (MR Neighbour becomes better than threshold)

[0251]

[0252] 5. MR Event A5 (MR SpCell(Serving) becomes worse than threshold1 and neighbour becomes better than threshold2)

[0253]

[0254] 6. MR Event A6 (MR Neighbour becomes offset better than SCell)

[0255]

[0256] 7. MR Event B1 (Inter RAT (LR) neighbour becomes better than threshold)

[0257]

[0258] 8. MR Event B2 (PCell (Serving) becomes worse than threshold1 and inter RAT (LR) neighbour becomes better than threshold2)

[0259]

[0260] 9. LR(LP-WUR) Event A1 (LR Serving becomes better than threshold)

[0261] 10. LR(LP-WUR) Event A2 (LR Serving becomes worse than threshold)

[0262] 11. LR(LP-WUR) Event A3 (LR Neighbour becomes offset better than LR Cell (Serving))

[0263] 12. LR(LP-WUR) Event A4 (LR Neighbour becomes better than threshold)

[0264] 13. LR(LP-WUR) Event A5 (LR SpCell(Serving) becomes worse than threshold1 and neighbour becomes better than threshold2)

[0265] 14. LR(LP-WUR) Event A6 (LR Neighbour becomes offset better than SCell)

[0266] 15. LR(LP-WUR) Event B1 (Inter RAT (LR) neighbour becomes better than threshold)

[0267] 16. LR(LP-WUR) Event B2 (PCell (Serving) becomes worse than threshold1 and inter RAT (MR) neighbour becomes better than threshold2)

[0268] 상술된 이벤트들은 MR을 이용한 CHO를 수행하기 위해 한 개 이상 설정될 수도 있다.

[0269] In addition, the terminal (8-1) can compare the distance between the base stations and the terminal with a certain threshold value. If a specified condition is satisfied based on the comparison result, the distance condition (Event D1) can be set to be identical to the CHO condition for MR and LR, and CHO can be triggered.

[0270] For example, the terminal (8-1) can be configured to perform CHO to a target cell that satisfies the conditions when either MR Event A3 or LR Event A3 is satisfied from the serving cell base station (8-2). Through this, the serving cell (8-2) can utilize the measurement utilizing one or more RATs to enable the terminal (8-1) to perform a handover to a specific neighboring cell (8-3) without a measurement report. For example, when either MR Event A3 or LR Event A3 is satisfied, the terminal (8-1) can perform a handover to a target cell (e.g., a specific neighboring cell (8-3)) that satisfies the conditions without a measurement report to the serving cell (8-2).

[0271] For example, the terminal (8-1) can be configured to perform CHO to a target cell that satisfies the conditions when both MR Event A2 and LR Event A4 are satisfied by the serving cell base station (8-2). Through this, the serving cell (8-2) can specify a neighboring cell with good performance through LR when the serving cell quality is degraded, and the terminal (8-1) can be configured to perform CHO to a target cell that satisfies the conditions.

[0272] For example, the base station can set an event condition for triggering a designated CHO for the terminal (8-1), and can transmit an indicator or flag indicating that the event condition applies to not only MR but also LR by including it in the configuration information (e.g., information for the event condition). For example, the indicator or flag can indicate that the event condition applies to not only MR but also LR (e.g., when the indicator is set to 1 or the flag is on). For example, when the indicator is set to 1 or the flag is on, the terminal can assign the event condition to the representative value of cells measured by LR as well as MR, and can be configured to perform CHO to a target cell that satisfies the condition when the MR or LR satisfies the event condition.

[0273] For example, when the base station sets an event condition for triggering a designated CHO to the terminal (8-1), the base station may transmit a bitmap including the configuration information (e.g., configuration information of the event condition for triggering the designated CHO) to inform that the designated condition is applied to not only MR but also LR. The bitmap may be composed of a series of bits that can determine whether MR and LR are applied. For example, if the bitmap consists of two bits and is of the form [MR, LR] that indicates whether the event condition is applied to MR or LR, the terminal can input the representative value of the cells measured for the RAT in which each bit is set to 1, and if the event condition is satisfied, the terminal can be configured to perform CHO to the target cell that satisfies the condition.

[0274] According to one embodiment, the measurement setup signal (8-10) and the measurement report setup signal (8-11) may be two different signals, or may be transmitted while being included in a single signal that is physically transmitted at one time. For example, setup information for measurement (e.g., measurement setup signal (8-10)) and setup information for measurement report (e.g., measurement report setup (8-11)) may be included in two different signals, respectively. For example, setup information for measurement (e.g., measurement setup signal (8-10)) and setup information for measurement report (e.g., measurement report setup (8-11)) may be included in a single signal.

[0275] According to one embodiment, the terminal (8-1) can receive MR SSB / CSI-RS signals of a serving cell (8-2) and neighboring cells (e.g., neighboring cell (8-3)) based on the received configuration (or configuration information) (8-13, 8-14), and can measure representative values ​​of cells based on the received MR SSB / CSI-RS signals (8-12).

[0276] According to one embodiment, the terminal (8-1) can receive LR SS and other synchronization signals of the serving cell (8-2) and neighboring cells (e.g., neighboring cell (8-3)) based on the received settings (or, setting information) (8-16, 8-17), and can measure the representative values ​​of the cells based on the LR SS and other synchronization signals (8-15).

[0277] According to one embodiment, the terminal (8-1) can input the cell representative values ​​of the measured MR and LR serving cell (e.g., serving cell (8-2)) and adjacent cells (e.g., adjacent cell (8-3)) into the set measurement report trigger condition (8-11) and determine whether the CHO trigger condition is satisfied (8-18). For example, the terminal (8-1) can determine whether the cell representative values ​​correspond to or meet the measurement report trigger condition.

[0278] According to one embodiment, the terminal (8-1) can be configured to perform CHO to a target cell that satisfies a condition when a specified CHO trigger condition is satisfied (8-19).

[0279] According to one embodiment, the terminal (8-1) may perform CHO using MR. (8-19) (Random Access for CHO) In this case, the terminal (8-1) may perform CHO to a cell and then establish a new LR transmission / reception connection with the cell (8-20). (Connection Setup using LR) Steps 8-19 and 8-20 may be transmission and / or reception of a series of signals rather than a single signal transmission.

[0280] As another example, the terminal (8-1) may perform CHO using LR (8-20), in which case the terminal may perform CHO to the cell (8-20) and then re-establish MR transmission / reception connection with the cell (8-19). Steps 8-19 and 8-20 may be transmission / reception of a series of signals rather than a single signal transmission.

[0281] According to one embodiment, if the terminal (8-1) is a target cell that can be connected directly without performing random access, steps 8-19 and / or 8-20 may be omitted.

[0282] FIG. 9 is a diagram illustrating a method for a terminal to perform measurement and reporting operations for MR and LR according to an embodiment of the present disclosure.

[0283] Referring to FIG. 9, a terminal (9-1), a serving cell (9-2), and / or an adjacent cell (9-3) according to one embodiment may each include MRs (9-4, 9-6, 9-8) and LP-WURs (9-5, 9-7, 9-9) as components.

[0284] According to one embodiment, the serving cell (9-2) can set a measurement objective including the frequencies of MR and LR that the terminal (9-1) can measure and provide parameters to be used for measurement to the terminal (9-1) (9-10).

[0285] According to one embodiment, a single Measurement Objective (MeasOject) may include at least some of the following information:

[0286] - Measurement frequency (ARFCN value, etc.) or list of measurement frequencies

[0287] - Subcarrier spacing (SCS)

[0288] - Reference signal (SSB, CSI-RS, SS, On-off keying signal, etc.) reception time information

[0289] ■ Start time, offset, cycle, measurement time length, etc.

[0290] - List of information on cells to be measured

[0291] ■ Cell ID

[0292] ■ Cell offset value, etc.

[0293] - Thresholds to be used for measurement

[0294] - Threshold values ​​to be used to derive cell values ​​during measurement

[0295] ■ The (maximum) number of beams to take the average,

[0296] ■ Threshold for selecting beams (only beams above the threshold are selected)

[0297] ■ Time length for Layer 1 (PHY layer) and / or Layer 3 (RRC layer) filtering, parameters to be entered into the filtering formula, etc.

[0298] According to one embodiment, within the measurement setup signal (9-10), the serving cell (9-2) may set a measurement gap to temporarily stop transmission and / or reception with the terminal (9-1) so that the serving cell (9-2) can measure neighboring cells of different frequencies.

[0299] According to one embodiment, the settings of the measurement gap may include a length of the gap, a repetition period of the gap, an offset of the gap, and / or a timing advance value for aligning the time axis of the gap.

[0300] In one embodiment, the measurement gap may be set to use time intervals of the same parameters for the MR frequency and the LR frequency of adjacent cells that are using different frequencies that the base station is aware of (or, identified).

[0301] In one embodiment, the measurement gap may be set separately for each RAT to use different parameter time intervals for the MR frequency and LR frequency of adjacent cells that the base station is aware of using different frequencies.

[0302] According to one embodiment, if there is a frequency for which the terminal (9-1) needs to measure other than the measurement gap set by the base station, the terminal (9-1) can determine and generate a Need for gap message requesting the base station to set a new gap, including information (e.g., information on the frequency for which measurement is required), for not only MR but also LR, and transmit it (9-12). (Transmit Need for Gaps info)

[0303] For example, if a terminal (9-1) needs to measure a designated LR frequency in addition to the frequency set to be measured based on the measurement gap setting (9-10) from the serving cell base station (9-2), it can generate and transmit a Need for gap message including at least one of the information included in [Table 29] below for LR (9-12).

[0304]

[0305] For example, the information may include a frequency indicator containing information about the frequency at which LR measurement is required and / or an indicator indicating whether a gap is required or not.

[0306] In one embodiment, a base station that receives a need for gap may transmit a message to the terminal (9-1) setting new measurement information based on information (e.g., information including a frequency indicator and / or an indicator indicating whether a gap is needed). For example, the message setting new measurement information may be a message that modifies the message transmitted in step 9-10.

[0307] According to one embodiment, a terminal (9-1) for which a measurement gap has been set can perform measurements using (or based on) MR and LR for the set frequencies other than the frequency of the serving cell when the time for the set gap to start arrives (9-13).

[0308] According to one embodiment, the terminal (9-1) can receive MR SSB / CSI-RS signals of a serving cell (9-2) and neighboring cells (e.g., neighboring cell (9-3)) of different frequencies within a measurement gap based on the received settings (9-15, 9-16), and can measure representative values ​​of cells based on the received MR SSB / CSI-RS signals (9-14).

[0309] According to one embodiment, the terminal (9-1) can receive LR SS and other synchronization signals of the serving cell (9-2) and adjacent cells (e.g., adjacent cell (9-3)) within the measurement gap based on the received settings (9-18, 9-19) and can measure the representative values ​​of the cells based on the LR SS and other synchronization signals (9-17).

[0310] FIG. 10 is a diagram illustrating a terminal configured with LR C-DRX and a terminal operation performed based on LR C-DRX according to an embodiment of the present disclosure.

[0311] Referring to FIG. 10, a terminal (10-1) and a serving cell (10-2) according to one embodiment may each include MRs (10-3, 10-5) and LP-WURs (10-4, 10-6) as components.

[0312] According to one embodiment, the terminal (10-1) can receive a signal including setting information of a connected discontinuous reception (C-DRX) period for saving power by stopping the operation of the terminal's communication module when there is no data transmission or reception from the serving base station (10-2) in the connected mode (10-7).

[0313] According to one embodiment, the C-DRX configuration may include an inactivity timer value indicating a length of time during which a downlink signal is not received from a base station to initiate a C-DRX operation, a sleep duration for the terminal (10-1) to periodically wake up and determine whether a downlink signal is received from the base station, and / or a repetition time indicating how many times the sleep duration is repeated.

[0314] For example, a C-DRX configuration may include two or more sleep segment lengths and repetition counts, etc., so that after the C-DRX operation starts, the device can sleep and wake up in short cycles for a certain number of times, and then sleep and wake up in longer cycles. That is, the C-DRX configuration may include information about various sleep segment lengths. For example, the C-DRX configuration may include information about a first sleep segment length and a second sleep segment length that is longer than the first sleep segment length.

[0315] That is, the C-DRX configuration may include information about various repetition counts. For example, the C-DRX configuration may include information about a first repetition count and a second repetition count that is greater than the first repetition count.

[0316] For example, the C-DRX configuration can be set to the terminal (10-1) with different parameter sets for different RATs such as MR and LR, and can be set to the terminal (10-1) with two different data structures.

[0317] For example, the C-DRX configuration can be set to the terminal (10-1) as one parameter set including a flag or indicator that allows different RATs, such as MR and LR, to use the same parameter set. When the flag or indicator is turned on, the terminal (10-1) can apply and operate the parameter set identically to different RATs.

[0318] For example, the C-DRX configuration may include a bitmap-type RAT indicator for each parameter that indicates which RAT the parameter is for in order to distinguish between parameters applicable to different RATs, such as MR and LR. When the flag or indicator is turned on, the terminal (10-1) may apply and operate the parameter set for different RATs.

[0319] For example, a C-DRX configuration can have two or more flags for each parameter to enable different RATs, such as MR and LR, to use the same parameter set, while allowing certain parameters to be shared by different RATs and allowing other parameters to have different values ​​for each RAT. In this case, the C-DRX configuration can include a bitmap-type RAT indicator that indicates which RAT the parameter is for. The terminal can apply and operate the parameter set for different RATs when the flag or indicator is turned on.

[0320] For example, the C-DRX configuration can be configured such that the DRX operation is started for the LR as well when the inactivity timer of the MR expires. The configuration (e.g., the configuration to start the DRX operation for the LR as well when the inactivity timer of the MR expires) can be applied to the specification, and the terminal (10-1) can be configured to always operate based on the configuration, or can be configured by including an indicator in the configuration to perform an operation based on the configuration. For example, the terminal (10-1) can be preset to operate based on configuration information (e.g., the configuration information to start the DRX operation for the LR as well when the inactivity timer of the MR expires), or can operate based on the configuration information according to an indicating of an indicator included in the configuration information.

[0321] For example, the C-DRX configuration can be configured to initiate DRX operation for one or more, or all, RATs when a C-DRX start condition is satisfied, such as when an inactivity timer of a specific RAT expires. For example, the configuration can be applied to the specification, and the terminal (10-1) can be configured to always operate based on the configuration, or the configuration can include an instruction to perform an operation based on the configuration.

[0322] For example, the C-DRX configuration may be set so that the period, number of repetitions, and / or start timer are all substantially the same, but only the offset value for starting the on-duration is different for MR and LR. For example, the configuration may cause the terminal (10-1) to always reflect (or apply) an offset of a certain length to the MR or LR, so that the MR or LR always starts the on-duration fixedly earlier (or later) than other RATs. For example, the configuration may be applied to the standard so that the terminal always performs the same operation with the same value. Alternatively, the configuration may be set to include an offset value relative to the RAT that causes the operation to be performed within the configuration.

[0323] Thereafter, the terminal (10-1) can perform MR C-DRX (10-8) or LR C-DRX operation (10-9) according to each MR and LR setting.

[0324] FIG. 11 is a diagram illustrating the structure of a base station according to an embodiment of the present disclosure.

[0325] Referring to FIG. 11, the base station (1100) may include a transceiver (1101), a control unit (1102), and a storage unit (1103). The transceiver (1101), the control unit (1102), and the storage unit (1103) may operate according to the communication method of the base station (1100) described above. In addition, a network device may also correspond to the structure of the base station (1100). However, the components of the base station (1100) are not limited to the examples described above. For example, the base station (1100) may include more or fewer components than the components described above. For example, the base station (1100) may include a transceiver (1101) and a control unit (1102). In addition, the transceiver (1101), the control unit (1102), and the storage unit (1103) may be implemented in the form of a single chip.

[0326] The base station of FIG. 11 of the present disclosure may correspond to a base station supporting a serving cell (serving cell base station) and / or a base station supporting an adjacent cell (or, an adjacent cell base station) in FIGS. 1 to 10.

[0327] According to one embodiment, the transceiver (1101) is a general term for the receiver of the base station (1100) and the transmitter of the base station (1100), and can transmit and receive signals with a terminal, another base station (1100), or other network devices. At this time, the transmitted and received signals may include control information and data. The transceiver (1101) may, for example, transmit system information to the terminal and transmit a synchronization signal or a reference signal. To this end, the transceiver (1101) may be configured with an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies and frequency-down-converts a received signal. However, this is only one embodiment of the transceiver (1101), and the components of the transceiver (1101) are not limited to an RF transmitter and an RF receiver. The transceiver (1101) may include a wired / wireless transceiver (1101) and may include various components for transmitting and receiving signals. In addition, the transceiver (1101) may receive a signal through a communication channel (e.g., a wireless channel) and output it to the control unit (1102), and transmit the signal output from the control unit (1102) through the communication channel. In addition, the transceiver (1101) may receive a communication signal and output it to the processor, and transmit the signal output from the processor to a terminal, another base station (1100), or another entity through a wired / wireless network.

[0328] The storage unit (1103) can store programs and data required for the operation of the base station (1100). In addition, the storage unit (1103) can store control information or data included in a signal acquired from the base station (1100). The storage unit (1103) can be configured as a storage medium or a combination of storage media, such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD. In addition, the storage unit (1103) can store at least one of information transmitted and received through the transceiver unit (1101) and information generated through the control unit (1102).

[0329] In the present disclosure, the control unit (1102) may be defined as a circuit or application-specific integrated circuit, or at least one processor. The processor may include a communication processor (CP) that performs control for communication and an application processor (AP) that controls upper layers such as application programs. The control unit (1102) may control the overall operation of the base station (1100) according to the embodiment proposed in the present disclosure. For example, the control unit (1102) may control the signal flow between each block to perform operations according to the flowchart described above.

[0330] FIG. 12 is a diagram illustrating the structure of a terminal according to an embodiment of the present disclosure.

[0331] Referring to FIG. 12, the terminal (1200) may include a transceiver (1201), a control unit (1202), and a storage unit (1203). The transceiver (1201), the control unit (1202), and the storage unit (1203) may operate according to the communication method of the terminal (1200) described above. However, the components of the terminal (1200) are not limited to the examples described above. For example, the terminal (1200) may include more or fewer components than the components described above. For example, the terminal (1200) may include a transceiver (1201) and a control unit (1202). In addition, the transceiver (1201), the control unit (1202), and the storage unit (1203) may be implemented in the form of a single chip.

[0332] The terminal (1200) of FIG. 12 of the present disclosure may correspond to the terminals of FIGS. 1 to 12. For example, the terminal (1200) of FIG. 12 may correspond to the terminal (1-09) of FIG. 1.

[0333] According to one embodiment, the transceiver (1201) refers to the receiver and transmitter of the terminal (1200) and can transmit and receive signals with a base station, another terminal (1200), or a network entity. The signals transmitted and received with the base station may include control information and data. The transceiver (1201) may receive system information from the base station, and may receive a synchronization signal or a reference signal, for example. To this end, the transceiver (1201) may be configured with an RF transmitter that up-converts and amplifies the frequency of a transmitted signal, and an RF receiver that low-noise amplifies and frequency-down-converts the received signal. However, this is only one embodiment of the transceiver (1201), and the components of the transceiver (1201) are not limited to an RF transmitter and an RF receiver. In addition, the transceiver (1201) may include a wired / wireless transceiver (1201) and may include various components for transmitting and receiving signals. In addition, the transceiver (1201) may receive a signal through a wireless channel and output it to the control unit (1202), and transmit the signal output from the control unit (1202) through the wireless channel. In addition, the transceiver (1201) may receive a communication signal and output it to the processor, and transmit the signal output from the processor to a network entity through a wired / wireless network.

[0334] The storage unit (1203) can store programs and data required for the operation of the terminal (1200). In addition, the memory can store control information or data included in a signal obtained from the terminal (1200). The storage unit (1203) can be configured as a storage medium or a combination of storage media, such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD.

[0335] In the present disclosure, the control unit (1202) may be defined as a circuit or application-specific integrated circuit, or at least one processor. The processor may include a communication processor (CP) that performs control for communication and an application processor (AP) that controls upper layers such as application programs. The control unit (1202) may control the overall operation of the terminal (1200) according to the embodiment proposed in the present disclosure. For example, the control unit (1202) may control the signal flow between each block to perform operations according to the flowchart described above.

[0336] 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.

[0337] 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.

[0338] 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.

[0339] 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.

[0340] In the specific embodiments of the present disclosure described above, components included in the disclosure 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.

[0341] 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. A method performed by a UE (user equipment) in a wireless communication system, A step of receiving, from a base station, configuration information for mitigation of a first measurement for radio link monitoring (RLM) or beam failure detection (BFD), wherein the first measurement is associated with LP (low power)-WUR (wake up radio) of the UE; A step of receiving a signal for the first measurement associated with the LP-WUR from the base station; and A method comprising the step of determining whether to relax a second measurement associated with an MR (main radio) of the UE based on the measurement value identified using the signal and the configuration information.

2. In claim 1, The above setting information includes information on threshold values ​​for easing the measurement, The step of determining whether to alleviate the second measurement based on the above measurement value and the above setting information is: a step of identifying the UE as having low mobility if the difference between the above measured value and the reference value is less than the threshold value; and A method comprising the step of determining to relax said second measurement associated with said MR.

3. In claim 1, The above setting information includes information on threshold values ​​for easing the measurement, The step of determining whether to alleviate the second measurement based on the above measurement value and the above setting information is: A method comprising the step of determining to relax the second measurement associated with the MR if the measurement value is greater than the sum of the threshold value and the offset.

4. In claim 3, A method further comprising the step of determining to relax the first measurement associated with the LP-WUR if the measurement value is greater than the sum of the threshold value and the offset.

5. A method performed by a base station in a wireless communication system, A step of transmitting, to a UE (user equipment), configuration information for mitigation of a first measurement for radio link monitoring (RLM) or beam failure detection (BFD), wherein the first measurement is associated with LP (low power)-WUR (wake up radio) of the UE; and comprising a step of transmitting a signal for the first measurement associated with the LP-WUR to the UE; A method wherein the relaxation of the second measurement associated with the MR (main radio) of the UE is based on the measurement value identified using the signal and the configuration information.

6. In claim 5, The above setting information includes information on threshold values ​​for easing the measurement, A method wherein the second measurement associated with the MR is relaxed when the difference between the measured value and the reference value is less than the threshold value.

7. In claim 5, The above setting information includes information on threshold values ​​for easing the measurement, A method wherein the second measurement associated with the MR is relaxed if the measurement value is greater than the sum of the threshold value and the offset.

8. In claim 7, A method wherein the first measurement associated with the LP-WUR is relaxed if the measurement value is greater than the sum of the threshold value and the offset.

9. In a wireless communication system, in the UE (user equipment), transceiver; and A controller coupled with the above transceiver, The above controller: Receive from a base station configuration information for mitigation of a first measurement for RLM (radio link monitoring) or BFD (beam failure detection), wherein the first measurement is associated with LP (low power)-WUR (wake up radio) of the UE, Receive a signal for the first measurement associated with the LP-WUR from the base station, A UE configured to determine whether to relax a second measurement associated with an MR (main radio) of the UE based on the measurement value identified using the above signal and the configuration information.

10. In claim 9, The above setting information includes information on threshold values ​​for easing the measurement, The above controller: If the difference between the above measured value and the reference value is less than the threshold value, the UE is identified as having low mobility, A UE configured to determine to relax said second measurement associated with said MR.

11. In claim 9, The above setting information includes information on threshold values ​​for easing the measurement, The above controller: A UE configured to decide to relax the second measurement associated with the MR if the above measurement value is greater than the sum of the threshold value and the offset.

12. In claim 11, The above controller: A UE configured to decide to relax the first measurement associated with the LP-WUR if the measurement value is greater than the sum of the threshold value and the offset.

13. In a base station in a wireless communication system, transceiver; and A controller coupled with the above transceiver, The above controller: Transmitting to UE (user equipment) configuration information for mitigation of a first measurement for RLM (radio link monitoring) or BFD (beam failure detection), wherein the first measurement is associated with LP (low power)-WUR (wake up radio) of the UE, is configured to transmit to the UE a signal for the first measurement associated with the LP-WUR, A base station, wherein the relaxation of the second measurement associated with the MR (main radio) of the UE is based on the measurement value identified using the signal and the configuration information.

14. In claim 13, The above setting information includes information on threshold values ​​for easing the measurement, A base station, wherein the second measurement associated with the MR is relaxed when the difference between the measured value and the reference value is less than the threshold value.

15. In claim 13, The above setting information includes information on threshold values ​​for easing the measurement, A base station, wherein the second measurement associated with the MR is relaxed if the above measurement value is greater than the sum of the threshold value and the offset.

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