Method and apparatus for transmitting and receiving data in a wireless communication system

Abstract

The present disclosure relates to a method and apparatus for sending and receiving data in a wireless communication system. An operation method of a terminal in a wireless communication system may include the following steps: receiving configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receiving configuration information about downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from a base station; identifying wake-up in DRX based on DCI; and when wake-up in DRX is not identified, performing periodic channel state information (CSI) reporting based on whether information indicating periodic CSI reporting is included in the configuration information about DCI.

Description

Technical Field

[0001] The present disclosure relates to a method and apparatus for transmitting and receiving data in a wireless communication system. More specifically, the present disclosure relates to a method and apparatus for transmitting channel state information (CSI). Background Art

[0002] In order to meet the growing demand for wireless data services after the commercialization of the fourth generation (4G) communication system, efforts have been made to develop the fifth generation (5G) or pre-5G communication system. For this reason, the 5G or pre-5G communication system is called a "beyond 4G network" communication system or a "post-long term evolution (post-LTE)" system. In order to achieve high data rates, it is being considered to implement the 5G communication system in an ultra-high frequency millimeter wave (mm wave) band (e.g., a 60 gigahertz (GHz) band). In order to reduce the path loss of radio waves and increase the transmission distance of radio waves in the ultra-high frequency band of the 5G communication system, various technologies such as beamforming, massive multiple input multiple output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antennas are being studied. In order to improve the system network for the 5G communication system, various technologies such as evolved small cells, advanced small cells, cloud radio access networks (Cloud-RAN), ultra-dense networks, device-to-device communication (D2D), wireless backhaul, mobile networks, cooperative communications, coordinated multi-point (CoMP), and interference elimination have been developed. In addition, for 5G communication systems, advanced coding modulation (ACM) technologies such as hybrid frequency shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC) and advanced access technologies such as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse coded multiple access (SCMA) have been developed.

[0003] The Internet has evolved from a human-based connection network in which humans create and consume information to the Internet of Things (IoT) in which distributed elements such as objects exchange information with each other to process information. Internet of Everything (IoE) technology has emerged, in which IoT technology is combined with technology for processing big data, such as through connection with a cloud server. In order to realize IoT, technical elements such as sensing technology, wired / wireless communication and network infrastructure, service interface technology, and security technology are required, so technologies for inter-object connection such as sensor networks, machine-to-machine (M2M) communication, or machine type communication (MTC) have been studied recently. In the IoT environment, intelligent Internet technology (IT) services can be provided to collect and analyze data obtained from connected objects, thereby creating new value in human life. Since existing information technology (IT) and various industries are integrated and combined with each other, IoT can be applied to various fields such as smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart home appliances, and advanced medical services.

[0004] Various attempts are being made to apply 5G communication systems to IoT networks. For example, technologies related to sensor networks, M2M communications, and MTC are implemented by adopting 5G communication technologies using beamforming, MIMO, and array antennas. Cloud Radio Access Network (Cloud-RAN) as an application of the above-mentioned big data processing technology may also be an example of the fusion of 5G communication technology and IoT technology.

[0005] Since various services can be provided due to the above-mentioned development of wireless communication systems, a method for efficiently providing these services is required. Summary of the invention

[0006] Solution to the problem

[0007] Based on the above discussion, the present disclosure provides an apparatus and method for transmitting channel state information (CSI) in a wireless communication system.

[0008] The beneficial effects of disclosure

[0009] The disclosed embodiments provide an apparatus and method capable of effectively reporting channel status in a wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1a is a diagram showing a structure of a Long Term Evolution (LTE) system for describing the present disclosure.

[0011] Figure 1b is a diagram showing a radio protocol architecture in an LTE system for describing the present disclosure.

[0012] Figure 1c is a diagram for describing carrier aggregation (CA) in a terminal according to an embodiment of the present disclosure.

[0013] Figure 1d is a diagram for describing a discontinuous reception (DRX) operation of a terminal according to an embodiment of the present disclosure.

[0014] Figure 1e is a diagram for describing an operation when a wake-up signal (WUS) introduced to further reduce power consumption of a terminal and DRX are configured at the same time according to an embodiment of the present disclosure.

[0015] Figure 1f is a flowchart illustrating an operation of a terminal when WUS and DRX are configured simultaneously according to an embodiment of the present disclosure.

[0016] Figure 1g is a block diagram showing a configuration of a terminal in a wireless communication system according to an embodiment of the present disclosure.

[0017] Figure 1h is a block diagram showing a configuration of a base station in a wireless communication system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0018] According to an embodiment of the present disclosure, an operation method of a terminal in a wireless communication system includes: receiving configuration information related to discontinuous reception (DRX) from a base station; based on the configuration information, periodically receiving a wake-up signal (WUS); based on the WUS, identifying whether the terminal is activated to monitor the scheduling of the base station; and sending channel state information CSI to the base station based on the identification result.

[0019] According to an embodiment of the present disclosure, an operation method of a terminal in a wireless communication system includes: receiving configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receiving configuration information about downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from the base station; identifying wake-up in DRX based on DCI; and when wake-up in DRX is not identified, performing periodic channel state information (CSI) reporting based on whether information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0020] According to an embodiment of the present disclosure, a terminal in a wireless communication system includes: a transceiver; and at least one processor, configured to: receive configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receive configuration information related to downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from the base station; identify wake-up in DRX based on DCI; and when wake-up in DRX is not identified, perform periodic channel state information (CSI) reporting based on whether information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0021] According to an embodiment of the present disclosure, a computer-readable recording medium can implement a program for executing a method thereon, the method comprising: receiving configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receiving configuration information related to downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from a base station; identifying wake-up in DRX based on DCI; and when wake-up in DRX is not identified, performing periodic channel state information (CSI) reporting based on whether information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0022] Mode of the present disclosure

[0023] Embodiments of the present disclosure will now be described more fully with reference to the accompanying drawings. In the following description of the present disclosure, well-known functions or configurations are not described in detail because they will obscure the present disclosure with unnecessary details. The terms used herein are those defined in consideration of the functions in the present disclosure and may vary according to the intentions of the user or operator, conventions, etc. Therefore, the terms used herein must be defined based on the meaning of the terms and the descriptions in the full text of the specification.

[0024] The advantages and features of the present disclosure and the methods for implementing the present disclosure will become apparent with reference to the embodiments of the present disclosure described in detail below in conjunction with the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as being limited to the embodiments of the present disclosure described herein; rather, these embodiments of the present disclosure are provided so that the present disclosure will be thorough and complete and the scope of the present disclosure will be fully conveyed to those of ordinary skill in the art, and the present disclosure is limited only by the appended claims. In this specification, the same reference numerals represent the same elements.

[0025] It should be understood that each block in the flow chart and the combination of multiple blocks in the flow chart can be implemented by computer program instructions. Because these computer program instructions can be loaded into a processor of a general-purpose computer, a special-purpose computer or other programmable data processing device, the instructions executed by the processor of the computer or other programmable data processing device generate components for implementing the functions specified in the flow chart frame. Because these computer program instructions can also be stored in a computer executable memory or a computer readable memory, which can guide the computer or other programmable data processing device to run in a particular way, the instructions stored in the computer executable memory or the computer readable memory can produce products including instruction components that implement the functions specified in the flow chart frame. Because computer program instructions can also be loaded into a computer or other programmable data processing device, a series of operating steps can be performed on a computer or other programmable data processing device to generate a computer-implemented process, and therefore the instructions executed on a computer or other programmable data processing device can provide steps for implementing the functions specified in the flow chart frame.

[0026] In addition, each block can represent a module, segment or part of a code, which includes one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions recorded in the blocks can occur in sequence. For example, depending on the functions involved, two blocks shown in succession can actually be executed substantially simultaneously, or the blocks can sometimes be executed in reverse order.

[0027] The term "~ unit" used in the present embodiment refers to a software or hardware component that performs certain tasks, such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC). However, the term "~ unit" does not mean to be limited to software or hardware. "~ unit" can be configured in an addressable storage medium, or can be configured to operate one or more processors. Therefore, for example, "~ unit" can include components, such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, subroutines, program code segments, drivers, firmware, microcodes, circuits, data, databases, data structures, tables, arrays and variables. The functions provided in components and "~ units" can be combined into fewer components and "~ units", or can be further separated into additional components and "~ units". In addition, components and "~ units" can be implemented as one or more central processing units (CPUs) in an operating device or a secure multimedia card. In addition, the "~ unit" in the embodiment may include one or more processors.

[0028] In the following description of the present disclosure, well-known functions or configurations are not described in detail because they would obscure the present disclosure with unnecessary detail. Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0029] In the following, for the convenience of explanation, the term indicating the access node, the term indicating the network entity, the term indicating the message, the term indicating the interface between the network entities, and the term indicating the various identification information used in this document are exemplified. Therefore, the present disclosure is not limited to the terms described below, and other terms indicating objects with the same technical meaning may be used.

[0030] In the following, for the sake of convenience of explanation, some terms and names defined in the 3rd Generation Partnership Project Long Term Evolution (3GPP LTE) standard may be used. However, the present disclosure may not be limited to these terms and names, and may also be applied to systems that comply with other standards. In particular, the present disclosure may be applied to 3GPP New Radio (NR) (5G mobile communication standard). In the present disclosure, for the sake of convenience of explanation, evolved Node B (eNB) may be used interchangeably with next-generation Node B (gNB). That is, a base station described as eNB may represent a gNB. In the present disclosure, the term "terminal" refers not only to mobile phones, narrowband Internet of Things (NB-IoT) devices, and sensors, but also to other wireless communication devices.

[0031] Hereinafter, a base station is an entity that allocates resources to a terminal, and may be at least one of a gNB, an eNB, a NB, a base station (BS), a radio access unit, a base station controller, or a node on a network. A terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing a communication function. However, the present disclosure is not limited to the above-mentioned embodiments.

[0032] The present disclosure relates to a method and apparatus for transmitting a channel status report in a wireless communication system in which a wake-up signal (WUS) is configured.

[0033] The present disclosure defines a method of reporting a channel state when discontinuous reception (DRX) is used in a wireless communication system.

[0034] In an embodiment of the present disclosure, the terminal may dynamically adjust a method of reporting a channel status according to the amount of data sent and received to reduce power consumption of the terminal.

[0035] Figure 1a is a diagram showing a structure of an LTE system for describing the present disclosure.

[0036] refer to Figure 1a , the wireless communication system may include multiple base stations 1a-05, 1a-10, 1a-15 and 1a-20, a mobility management entity (MME) 1a-25 and a serving gateway (S-GW) 1a-30. User equipment (hereinafter referred to as UE or "terminal") 1a-35 can access the external network through base stations 1a-05, 1a-10, 1a-15 and 1a-20 and S-GW 1a-30.

[0037] Base stations 1a-05, 1a-10, 1a-15 and 1a-20 are access nodes of a cellular network and can provide wireless access to UEs accessing the network. That is, in order to serve the user's business, base stations 1a-05, 1a-10, 1a-15 and 1a-20 can collect and schedule status information, such as the buffer status, available transmission power status and channel status of the UE, thereby supporting the connection between the UE and the core network (CN). MME 1a-25 is a device capable of performing mobility management functions and control functions for the UE and can be connected to multiple base stations, and S-GW 1a-30 is a device that provides data bearer. In addition, MME 1a-25 and S-GW1a-30 can also perform authentication, bearer management, etc. for UEs accessing the network, and can process packets received from base stations 1a-05, 1a-10, 1a-15 and 1a-20 or packets to be sent to base stations 1a-05, 1a-10, 1a-15 and 1a-20.

[0038] Figure 1bis a diagram showing a radio protocol architecture in an LTE system for describing the present disclosure.

[0039] Reference Figure 1b , the wireless protocols of the LTE system include Packet Data Convergence Protocol (PDCP) 1b-05 and 1b-40, Radio Link Control (RLC) 1b-10 and 1b-35, and Medium Access Control (MAC) 1b-15 and 1b-30 in the UE and eNB. PDCP 1b-05 and 1b-40 perform compression / decompression operations of Internet Protocol (IP) headers, and RLC 1b-10 and 1b-35 reconfigure PDCP packet data units (PDUs) to an appropriate size. MAC 1b-15 and 1b-30 are connected to a plurality of RLC layers configured for one UE, and multiplex RLC PDUs into MAC PDUs, and demultiplex RLC PDUs from MAC PDUs. The physical (PHY) layers 1b-20 and 1b-25 channel encode and modulate the higher layer data, convert the data into frequency division multiplexing (OFDM) symbols, and transmit the OFDM symbols via a wireless channel, or demodulate the OFDM symbols received via a wireless channel, channel decode the OFDM symbols, and pass the OFDM symbols to a higher layer. In addition, a hybrid automatic repeat request (HARQ) is used in the physical layer for additional error correction, and the receiving end sends information about whether the packet sent from the transmitting end is received in 1 bit. This is called HARQ ACK / NACK information. Downlink HARQ ACK / NACK information for uplink data transmission can be sent via a physical HARQ indicator channel (PHICH), and uplink HARQ ACK / NACK information for downlink data transmission can be sent via a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH). In addition, uplink HARQ ACK / NACK information can be used to periodically report the strength and quality of the downlink signal (channel state information (CSI)) through PUCCH. Although PUCCH is usually sent in the uplink of the primary cell (PCell), when the UE supports it, the base station can let the UE send PUCCH in the secondary cell (SCell), which can be called PUCCH SCell.

[0040] Despite Figure 1b Although not shown in the figure, a radio resource control (RRC) layer exists above the PDCP layer of the UE and the base station, respectively, and the RRC layer can exchange access and measurement-related configuration control messages for radio resource control.

[0041] At the same time, the PHY layer may correspond to one or more frequencies / carriers. The technology of configuring and using multiple frequencies simultaneously may be referred to as carrier aggregation (CA). CA can significantly increase the amount of transmission by the number of subcarriers by additionally using a main carrier and one or more subcarriers instead of just one carrier to communicate between the UE and the base station (E-UTRAN NB, eNB). In LTE, a cell in a base station using a main carrier may be referred to as a primary cell (PCell), and a cell in a base station using a subcarrier may be referred to as a secondary cell (SCell).

[0042] Figure 1c is a diagram for describing carrier aggregation (CA) in a terminal according to an embodiment of the present disclosure.

[0043] refer to Figure 1c , in one base station, multiple carriers can generally be sent and received in multiple frequency bands. For example, when carrier 1c-15 with center frequency f1 and carrier 1c-10 with center frequency f3 are transmitted in base station 1c-05, one terminal generally transmits and receives data by using one of the two carriers. However, a terminal with CA capability can simultaneously send and receive data from multiple carriers. Base station 1c-05 can allocate more carriers to terminal 1c-30 with CA capability when necessary to increase the data rate of terminal 1c-30.

[0044] When it is assumed that one cell is formed by one forward carrier and one reverse carrier transmitted and received by one base station, CA can be understood as a method by which a terminal simultaneously transmits and receives data via multiple cells. Therefore, the maximum data rate can be increased in proportion to the number of aggregated carriers.

[0045] In the following description, when a terminal receives data via a forward carrier or sends data via a reverse carrier, this may mean that the terminal sends and receives data via a control channel and a data channel corresponding to a frequency band and a center frequency characterizing a carrier provided by a cell. For ease of explanation, the following embodiments of the present disclosure will be described based on an NR system. However, it should be understood that the embodiments of the present disclosure can be applied to various wireless communication systems supporting CA.

[0046] Figure 1d is a diagram for describing a discontinuous reception (DRX) operation of a terminal according to an embodiment of the present disclosure.

[0047] In an embodiment, DRX may refer to a technique in which a terminal monitors only some physical downlink control channels (PDCCHs) according to configuration information, rather than monitoring all PDCCHs, so as to obtain scheduling information according to the configuration of a base station, thereby minimizing power consumption of the terminal.

[0048] refer to Figure 1d , the basic DRX operation may have a DRX cycle 1d-00, and the terminal may monitor the PDCCH only within the on-duration 1d-05. In connected mode, two values, i.e., long DRX and short DRX, may be set as the DRX cycle. Generally, a long DRX cycle may be applied, and if necessary, the base station may additionally configure a short DRX cycle. When both a long DRX cycle and a short DRX cycle are configured, the terminal may start a short DRX cycle timer and may first repeat the short DRX cycle, and when there is no new service until the short DRX cycle timer expires, the terminal may change the short DRX cycle to a long DRX cycle. When scheduling information for a new packet is received through PDCCH 1d-10 within the on-duration 1d-05, the terminal may start a DRX inactive timer 1d-15. The terminal may remain active during the DRX inactive timer. That is, the terminal may continuously perform PDCCH monitoring. In addition, the terminal may start a HARQ round trip time (RTT) timer 1d-20. The HARQ RTT timer can be applied to prevent the terminal from unnecessarily monitoring the PDCCH during the HARQ RTT, and the terminal does not need to perform PDCCH monitoring during the timer running time. However, when the DRX inactive timer and the HARQ RTT timer are running at the same time, the terminal can continuously perform PDCCH monitoring based on the DRX inactive timer. When the HARQ RTT timer expires, the DRX retransmission timer 1d-25 can be started. In an embodiment, when the DRX retransmission timer is running, the terminal should perform PDCCH monitoring. Typically, during the running time of the DRX retransmission timer, scheduling information for HARQ retransmission can be received (1d-30). When the scheduling information is received, the terminal can immediately stop the DRX retransmission timer and can restart the HARQ RTT timer. The above operations can be performed continuously until the packet is successfully received (1d-35). In addition, additionally, when the base station no longer has data to send to the terminal while the on-duration timer (on-duration timer) or the DRX inactive timer is running, the base station can send a DRX command MAC control element (CE) message. The terminal receiving the DRX Command MACCE message may stop the on-duration timer and the DRX inactivity timer, and may first use the short DRX cycle when the short DRX cycle is configured, and may use the long DRX cycle when only the long DRX cycle is configured.

[0049] Figure 1e is a diagram for describing an operation when a wake-up signal (WUS) introduced to further reduce power consumption of a terminal and DRX are configured at the same time according to an embodiment of the present disclosure.

[0050] Reference Figure 1e , WUS can be a signal 1e-01, 1e-03, 1e-05 or 1e-07, which indicates whether the terminal should monitor the scheduling from the base station, that is, whether to wake up or continue to sleep. In an embodiment, WUS can be a specially designed physical channel, or it can be new scheduling information (e.g., downlink control information (DCI)) sent via PDCCH. When WUS is DCI, the following resources (CORESET and search space) can be configured separately: DCI is sent through this resource so that the terminal should monitor PDCCH. For example, the terminal can determine whether DCI is sent by monitoring only a narrower bandwidth. In this case, the power consumption of the terminal can be reduced compared to the power consumption of the terminal monitoring PDCCH for general scheduling. This is why the power consumed by each of WUS 1e-01, 1e-03, 1e-05 and 1e-07 is slightly shorter in length on the vertical axis than the length of the interval 1e-11 in which the terminal wakes up and monitors PDCCH.

[0051] exist Figure 1e In the example, it can be assumed that the time when the WUS is sent is before the start point of the DRX cycle (i.e., the point at which the on-duration starts). Figure 1e As explained in , the time of WUS and the time of onDuration (active time of DRX) are continuous, but in reality, by considering the processing time of the terminal, there may be an offset between the two times (e.g., the time of WUS and the time of onDuration). The position of WUS can be configured in the same way as the offset before the arrival time of onDuration. Alternatively, when the base station configures the resources (CORESET and search space) for monitoring PDCCH as described above, the base station can configure the resources by considering the DRX cycle.

[0052] Therefore, in an embodiment, when WUS indicates that the terminal is to wake up (or turn on or wake up), the terminal may wake up in onDuration according to the DRX operation, and may monitor PDCCH (1e-11) and (1e-23) according to the defined DRX operation. However, when WUS is indicated to be continuously dormant (off or dormant), the terminal may not operate even in onDuration, and may continuously maintain an inactive state until the next WUS (1e-21) and (1e-25) are received.

[0053] In DRX operation, the terminal may report channel state information (CSI) during the active time including the time when onDuration starts. When the terminal receives WUS off information according to the above process and onDuration is not running, the terminal may not report CSI. When this situation continues, the base station may not receive CSI reports from the terminal, so it may be difficult to adjust the direction of the beam sent to the terminal. In particular, in a system that can operate even at high frequencies such as NR, it may be difficult for the base station to track the beam direction of the terminal when CSI is not reported for multiple DRX cycles.

[0054] Therefore, in an embodiment, when the terminal receives WUS off information, the following options for CSI transmission may be considered.

[0055] The first option may include a method in which periodic CSI is always sent within the time when the drx-onDurationTimer should run, even if the drx-onDurationTimer is not running. Therefore, regardless of the WUS on / off information, the terminal can report CSI at least within the time when the drx-onDurationTimer should run, so that the base station tracks the channel state and beam direction of the terminal.

[0056] The second option may include a method of selectively reporting CSI according to conditions within the time when drx-onDurationTimer should run. In this option, when WUS on information is received, drx-onDurationTimer is running, so the terminal can report CSI within the corresponding time. However, when WUS off information is received, if the measured value of the current beam direction is greater than a certain threshold, the terminal may not report CSI during the time when drx-onDurationTimer should run. However, when the measured value is less than a certain threshold, the terminal can report CSI within the time when drx-onDurationTimer should run even if drx-onDurationTimer is not running. The beam direction may be referred to as a transmission configuration indicator (TCI) state in NR. Multiple TCI states can be configured in the terminal. The terminal can activate a TCI state for PDCCH reception from multiple TCI states. Therefore, the terminal can compare the value obtained by measuring the reference signal corresponding to the TCI state activated for PDCCH reception with a specific threshold. In addition, in an embodiment, the specific threshold value may be a value set by the base station by using an RRC message (e.g., an RRC reconfiguration message), and the base station may configure the reference signal received power (RSRP) or the reference signal received quality (RSRQ) or both. That is, when the RSRP and RSRQ thresholds are set, if at least one of the two conditions (e.g., RSRP and RSRQ) deteriorates, the terminal may report CSI within the time that the drx-onDurationTimer should run even if the drx-onDurationTimer is not running. In addition, additionally, when the signal strength / quality in the corresponding TCI state is low, the terminal may continuously wait for a command from the base station to receive a change in the TCI state for PDCCH reception from the base station. That is, although DRX is configured in the above case (e.g., when the signal strength / quality in the TCI state is low), the terminal may maintain the active time and may receive a control message of the MAC layer to change the TCI state for PDCCH reception from the base station, the control message indicating "TCI state indication for UE-specific PDCCH MAC CE". In order to maintain the active time, when the above situation occurs, the terminal can start the DRX inactive timer once when the drx-onDurationTimer expires. Alternatively, when the above situation occurs, the terminal can continuously maintain the active time without starting a separate timer until a MAC CE is received. When the active time is continuously maintained, the terminal can continuously perform periodic CSI reporting.

[0057] The third option may include a method of configuring whether to report periodic CSI in a message of the RRC layer even when the WUS is turned off within the time when the drx-onDurationTimer should run. The detailed configuration information related to the DRX configuration information and the WUS can be configured by using the RRC reconfiguration message of the RRC layer. In this case, even when the WUS is turned off within the time when the drx-onDurationTimer should run, it is also possible to configure whether to report periodic CSI in the RRC reconfiguration message. For example, in the case where the base station operates at a low frequency, the operation of the base station will not be greatly affected even when the beam is not tracked. For this case, the third option may be a method of semi-statically configuring the function itself. Therefore, when the periodic CSI is configured in the RRC to be reported even when the WUS is turned off within the time when the drx-onDurationTimer should run, the terminal can also periodically send CSI reports during the corresponding time period. In addition, the periodic CSI can also be additionally configured in the RRC configuration information to be reported, so that when the WUS is turned off within the time when the drx-onDurationTimer should run, the terminal only performs N reporting operations. In this case, N may be an integer equal to or greater than 1. Therefore, even when the time of the drx-onDurationTimer is long and thus a plurality of periodic CSI reporting operations may be performed, the number of reporting operations may be limited.

[0058] The fourth option may include a method of determining whether to report periodic CSI according to the frequency of the current cell operation, even when the WUS is turned off within the time when the drx-onDurationTimer should run. In NR, according to the operating frequency, a frequency of 7.125 GHz may be defined as FR1, and a frequency equal to or higher than 24.250 GHz may be defined as FR2. When all frequencies of the cell in which the current terminal operates belong to FR1, if the WUS is turned off, the terminal may not perform periodic CSI reporting. Alternatively, when the frequency of one of the cells in which the current cell among multiple cells operates belongs to FR2, the terminal may perform periodic CSI reporting even if the WUS is turned off within the time when the drx-onDurationTimer should run.

[0059] Table 1

[0060] Specify frequency range Corresponding frequency range FR1 410MHz-7125MHz FR2 24250MHz-52600MHz

[0061] The fifth option may include the following method: when WUS is turned off, the terminal does not perform periodic CSI reporting, but when the number reaches the number configured in RRC (for example, N*DRX cycle), the terminal performs reporting.

[0062] The sixth option may include a method in which the WUS message itself directly indicates whether the terminal reports periodic CSI within the time when the next drx-onDurationTimer should run. For example, the method may be a method in which the terminal is instructed to report periodic CSI within the time when the next drx-onDurationTimer should run even when the base station indicates to the terminal that the WUS is turned off.

[0063] Although the above example is only described for periodic CSI reporting, the same method can also be applied to other signal transmissions. For example, even in the case of a sounding reference signal (SRS) for uplink channel estimation, when DRX is configured by the method, the time when the terminal sends the signal can be adjusted when WUS is turned off.

[0064] Figure 1f is a flowchart illustrating an operation of a terminal when WUS and DRX are configured simultaneously according to an embodiment of the present disclosure.

[0065] refer to Figure 1f , it can be assumed that the terminal accesses the base station and performs a connection establishment of the base station (1f-03). In an embodiment, the connection establishment may include a process in which the terminal performs random access to the base station, sends an RRC establishment request message of the RRC layer, receives an RRC establishment message, and sends an RRC establishment completion message.

[0066] Next, the terminal can receive various configurations from the base station, and can send the configuration by using the RRC reconfiguration message of the RRC layer (1f-05). The configuration may include various configuration information for adding / modifying / releasing the SCell and using the corresponding cell. In addition, the above configuration may include information for configuring DRX and information about the lengths of various timers used for DRX (such as retransmission timer, DRX start offset, long DRX cycle, short DRX cycle, DRX short cycle timer, inactive timer and duration timer). In addition, the above configuration may include measurement configuration related information on how to measure and how to report the downlink channel state for downlink data transmission for PCell and SCell. In addition, the above configuration may include a period related to WUS, and offset information between WUS and onDuration (or DRX cycle).

[0067] Therefore, when the terminal receives the RRC configuration value, the terminal can notify the base station that the corresponding RRC message has been correctly received by sending an RRC reconfiguration completion message of the RRC layer.

[0068] According to the received configuration information, the terminal can periodically receive WUS (1f-07), and can identify whether the received information is turned on (ie, wake up) or turned off (ie, continuously sleep) (1f-09).

[0069] When WUS is turned on, the terminal may start the drx-onDurationTimer at the next drx-onDurationTimer start time and may perform periodic CSI reporting including PDCCH monitoring during the corresponding time (1f-11).

[0070] However, when WUS is turned off, the terminal may not start the next drx-onDurationTimer and may not perform PDCCH monitoring. However, for periodic CSI reporting, the terminal may select one of the following options.

[0071] For example, the first option may include a method in which the terminal always sends periodic CSI within the time when drx-onDurationTimer should run, even if drx-onDurationTimer is not running. Therefore, regardless of the WUS on / off information, the terminal can report CSI at least within the time when drx-onDurationTimer should run, so that the base station tracks the channel state and beam direction of the terminal.

[0072] The second option may include a method of selectively reporting CSI according to conditions within the time when drx-onDurationTimer should run. In this option, when WUS on information is received, drx-onDurationTimer is running, so the terminal can report CSI within the corresponding time. However, when WUS off information is received, if the measured value of the current beam direction is greater than a certain threshold, the terminal may not report CSI during the time when drx-onDurationTimer should run. However, when the measured value is less than a certain threshold, the terminal may report CSI within the time when drx-onDurationTimer should run even if drx-onDurationTimer is not running. The beam direction may be referred to as a transmission configuration indicator (TCI) state in NR. Several TCI states may be configured in the terminal. The terminal may activate a TCI state for PDCCH reception from multiple TCI states. Therefore, the terminal may compare the value obtained by measuring the reference signal corresponding to the TCI state activated for PDCCH reception with a specific threshold. In addition, in an embodiment, the specific threshold value may be a value set by the base station by using an RRC message (e.g., an RRC reconfiguration message), and the base station may configure RSRP or reference signal reception quality RSRQ or both. That is, when setting the RSRP and RSRQ thresholds, if at least one of the two conditions (e.g., RSRP and RSRQ) deteriorates, the terminal may report CSI within the time that the drx-onDurationTimer should run even if the drx-onDurationTimer is not running. Moreover, in addition, when the signal strength / quality in the corresponding TCI state is low, the terminal may continuously wait for a command from the base station to receive a change in the TCI state for PDCCH reception from the base station. That is, although DRX is configured in the above case (e.g., when the signal strength / quality in the TCI state is low), the terminal may maintain the active time and may receive a control message of the MAC layer to change the TCI state for PDCCH reception from the base station, the control message indicating "TCI state indication for UE-specific PDCCH MAC CE". In order to maintain the active time, when the above situation occurs, the terminal can start the DRX inactive timer once when the drx-onDurationTimer expires. Alternatively, when the above situation occurs, the terminal can continuously maintain the active time without starting a separate timer until a MAC CE is received. When the active time is continuously maintained, the terminal can continuously perform periodic CSI reporting.

[0073] The third option may include a method of configuring whether to report periodic CSI in a message at the RRC layer even when the WUS is turned off within the time that the drx-onDurationTimer should run. The DRX configuration information and the detailed configuration information related to the WUS can be configured by using the RRC reconfiguration message of the RRC layer. In this case, whether to report periodic CSI can be configured in the RRC reconfiguration message even when the WUS is turned off within the time that the drx-onDurationTimer should run. For example, in the case where the base station operates at a low frequency, the operation of the base station will not be greatly affected even when the beam is not tracked. For this case, the third option may be a method of semi-statically configuring the function itself. Therefore, when the periodic CSI is configured in the RRC to be reported even when the WUS is turned off within the time that the drx-onDurationTimer should run, the terminal can also periodically send CSI reports during the corresponding time period. In addition, periodic CSI may be additionally configured in the RRC configuration information to be reported so that when the WUS is turned off within the time that the drx-onDurationTimer should run, the terminal performs only N reporting operations. In this case, N may be an integer equal to or greater than 1. Therefore, even when the time of the drx-onDurationTimer is long and thus several multiple CSI reports may be performed, the number of reporting operations may be limited.

[0074] The fourth option may include a method of determining whether to report periodic CSI according to the frequency of the current cell operation, even when the WUS is turned off within the time when the drx-onDurationTimer should run. In NR, according to the operating frequency, a frequency of 7.125 GHz may be defined as FR1, and a frequency equal to or higher than 24.250 GHz may be defined as FR2. When all frequencies of the cell in which the current terminal operates belong to FR1, if the WUS is turned off, the terminal may not perform periodic CSI reporting. Alternatively, when the frequency of one of the cells in which the current cell among multiple cells operates belongs to FR2, the terminal may perform periodic CSI reporting even if the WUS is turned off within the time when the drx-onDurationTimer should run.

[0075] The fifth option may include a method in which the terminal does not perform periodic CSI reporting when the WUS is turned off, but performs reporting when the number of times reaches the number of times configured in the RRC (eg, N*DRX cycle).

[0076] The sixth option may include a method in which the WUS message itself directly indicates whether the terminal reports periodic CSI within the time when the next drx-onDurationTimer should run. For example, the method may be a method in which the terminal is instructed to report periodic CSI within the time when the next drx-onDurationTimer should run even when the base station indicates to the terminal that the WUS is turned off.

[0077] Although the above example is only described for periodic CSI reporting, the same method can also be applied to other signal transmissions. For example, even in the case of a sounding reference signal (SRS) for uplink channel estimation, when DRX is configured by the method, the time when the terminal sends the signal can be adjusted when WUS is turned off.

[0078] The terminal may determine whether to perform periodic CSI reporting, and may perform or skip reporting when the WUS is turned off through at least one of the above methods.

[0079] Figure 1g is a block diagram showing a configuration of a terminal in a wireless communication system according to an embodiment of the present disclosure.

[0080] refer to Figure 1g , the terminal may include a radio frequency (RF) processor 1g-10, a baseband processor 1g-20, a memory 1g-30 and a controller 1g-40.

[0081] In an embodiment, the RF processor 1g-10 may perform functions of sending and receiving signals via a wireless channel, such as signal band conversion or amplification. That is, the RF processor 1g-10 may up-convert a baseband signal applied from the baseband processor 1g-20 into an RF band signal and transmit the RF band signal via an antenna, and may down-convert an RF band signal received via an antenna into a baseband signal. For example, the RF processor 1g-10 may include a transmit filter, a receive filter, an amplifier, a mixer, an oscillator, a digital-to-analog converter (DAC), or an analog-to-digital converter (ADC). Although in Figure 1g Only one antenna is shown in the figure, but the terminal may include multiple antennas. Moreover, the RF processor 1g-10 may include multiple RF chains. In addition, the RF processor 1g-10 may perform beamforming. For beamforming, the RF processor 1g-10 may adjust the phase and amplitude of each signal sent / received via multiple antennas or antenna elements.

[0082] In an embodiment, the baseband processor 1g-20 may perform a conversion function between a baseband signal and a bit stream according to the physical layer specification of the system. For example, during data transmission, the baseband processor 1g-20 may generate multiplexed symbols by encoding and modulating the transmitted bit stream. In addition, during data reception, the baseband processor 1g-20 may reconstruct the received bit stream by demodulating and decoding the baseband signal applied from the RF processor 1g-10. For example, according to the OFDM scheme, during data transmission, the baseband processor 1g-20 may generate multiplexed symbols by encoding and modulating the transmitted bit stream, the multiplexed symbols may be mapped to subcarriers, and then the OFDM symbols may be configured by an inverse fast Fourier transform (IFFT) operation and a cyclic prefix (CP) insertion. In addition, during data reception, the baseband processor 1g-20 can divide the baseband signal received from the RF processor 1g-10 into multiple units of OFDM symbols, can reconstruct the signal mapped to the subcarriers through a fast Fourier transform (FFT) operation, and can then reconstruct the received bit stream through demodulation and decoding.

[0083] In an embodiment, the baseband processor 1g-20 and the RF processor 1g-10 may send and receive signals as described above. Therefore, the baseband processor 1g-20 and the RF processor 1g-10 may each be referred to as a transmitter, a receiver, a transceiver, or a communicator. In addition, at least one of the baseband processor 1g-20 and the RF processor 1g-10 may include a plurality of communication modules supporting different radio access technologies. In addition, at least one of the baseband processor 1g-20 and the RF processor 1g-10 may include different communication modules to process signals of different frequency bands. For example, different radio access technologies may include a wireless local area network (LAN) (e.g., Institute of Electrical and Electronics Engineers (IEEE) 802.11) and a cellular network (e.g., LTE). Moreover, different frequency bands may include super high frequency (SHF) (e.g., 2.5 GHz or 5 GHz) bands and millimeter (mm) wave (e.g., 60 GHz) bands.

[0084] In an embodiment, the memory 1g-30 may store data such as a basic program, an application program, or configuration information for terminal operation. In particular, the memory 1g-30 may store information related to a wireless LAN node that performs wireless communication by using a wireless LAN access technology. The memory 1g-30 may provide the stored data according to a request of the controller 1g-40. According to an embodiment, the memory 1g-30 may store a program for performing an operation of transmitting channel state information according to the above-mentioned embodiment of the present disclosure.

[0085] In an embodiment, the controller 1g-40 may control the overall operation of the terminal. For example, the controller 1g-40 may send and receive signals via the baseband processor 1g-20 and the RF processor 1g-10. In addition, the controller 1g-40 may record data to the memory 1g-40 and read data from the memory 1g-40. To this end, the controller 1g-40 may include at least one processor. For example, the controller 1g-40 may include a communication processor (CP) for performing communication control and an application processor (AP) for controlling a higher layer such as an application. According to an embodiment of the present disclosure, the controller 1g-40 may include a multi-connection processor 1g-42, which is configured to execute a process for operating in a multi-connection mode. For example, the controller 1g-40 may control the terminal to perform Figure 1e The process is shown in the operation of the terminal.

[0086] According to the embodiment, the controller 1g-40 can control a series of processes so that the terminal operates according to the embodiment of the present disclosure. For example, the controller 1g-40 can control the elements of the terminal to perform the method of sending channel state information according to the embodiment of the present disclosure.

[0087] By allowing the terminal to perform or not perform a specific operation according to the WUS information received from the base station, the controller 1g-40 according to an embodiment of the present disclosure can reduce the power consumption of the terminal and can effectively track the beam direction when necessary.

[0088] Figure 1h is a block diagram showing a configuration of a base station in a wireless communication system according to an embodiment of the present disclosure.

[0089] like Figure 1h As shown, the base station may include an RF processor 1h-10, a baseband processor 1h-20, a communicator 1h-30, a memory 1h-40 and a controller 1h-50.

[0090] According to an embodiment, the RF processor 1h-10 can perform functions of sending and receiving signals via a wireless channel, such as signal band conversion or amplification. That is, the RF processor 1h-10 can up-convert the baseband signal applied from the baseband processor 1h-20 into an RF band signal and send the RF band signal via an antenna, and can down-convert the RF band signal received via the antenna into a baseband signal. For example, the RF processor 1h-10 may include a transmitting filter, a receiving filter, an amplifier, a mixer, an oscillator, a DAC, or an ADC. Although in Figure 1hOnly one antenna is shown in the figure, but the base station may include multiple antennas. Moreover, the RF processor 1h-10 may include multiple RF chains. In addition, the RF processor 1h-10 can perform beamforming. For beamforming, the RF processor 1h-10 can adjust the phase and amplitude of each signal sent / received through multiple antennas or antenna elements. The RF processor can perform downlink multiple-input and multiple-output (MIMO) operations by transmitting on one or more layers.

[0091] In an embodiment, the baseband processor 1h-20 may perform a conversion function between a baseband signal and a bit stream according to the physical layer specification of the system. For example, during data transmission, the baseband processor 1h-20 may generate multiplexed symbols by encoding and modulating the transmitted bit stream. In addition, during data reception, the baseband processor 1h-20 may reconstruct the received bit stream by demodulating and decoding the baseband signal applied from the RF processor 1h-10. For example, according to the OFDM scheme, during data transmission, the baseband processor 1h-20 may generate multiplexed symbols by encoding and modulating the transmitted bit stream, the multiplexed symbols may be mapped to subcarriers, and then the OFDM symbols may be configured by IFFT operations and CP insertion. In addition, during data reception, the baseband processor 1h-20 may divide the baseband signal applied from the RF processor 1h-10 into multiple units of OFDM symbols, the signal mapped to the subcarriers may be reconstructed by FFT operations, and then the received bit stream may be reconstructed by demodulation and decoding. As described above, the baseband processor 1h-20 and the RF processor 1h-10 can transmit and receive signals. Therefore, the baseband processor 1h-20 and the RF processor 1h-10 can each be referred to as a transmitter, a receiver, a transceiver, a communicator, or a wireless communicator.

[0092] The communicator 1h-30 can provide an interface for performing communication with other nodes in the network. That is, the communicator 1h-30 can convert a bit stream sent from the main base station to another node (such as a secondary base station or a core network) into a physical signal, and can convert a physical signal received from another node into a bit stream.

[0093] The memory 1h-40 may store data such as basic programs, applications, or configuration information for the operation of the master base station. Specifically, the memory 1h-40 may store information related to the bearer assigned to the access terminal, measurement results reported from the access terminal, etc. In addition, the memory 1h-40 may store information as a criterion for determining whether to provide or stop multiple connections to the terminal. The memory 1h-40 may provide the stored data according to the request of the controller 1h-50.

[0094] The controller 1h-50 can control the overall operation of the base station. For example, the controller 1h-50 can send and receive signals via the baseband processor 1h-20 and the RF processor 1h-10 or via the communicator 1h-30. In addition, the controller 1h-50 can record data to the memory 1h-40 and read data from the memory 1h-40. To this end, the controller 1h-50 may include at least one processor. For example, the controller 1h-50 may include a communication processor (CP) for performing communication control and an application processor (AP) for controlling a higher layer such as an application. According to an embodiment of the present disclosure, the controller 1h-50 may include a multi-connection processor 1h-52, which is configured to execute a process for operating in a multi-connection mode.

[0095] The controller 1h-50 can control a series of processes so that the base station operates according to the embodiments of the present disclosure. For example, the controller 1h-50 can control the elements of the base station to perform the method of receiving channel state information in a wireless communication system according to the embodiments of the present disclosure.

[0096] According to an embodiment of the present disclosure, an operation method of a terminal in a wireless communication system may include: receiving configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receiving configuration information about downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from the base station; identifying wake-up in DRX based on the DCI; and when wake-up in DRX is not identified, performing periodic CSI reporting based on whether information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0097] According to an embodiment, identifying the wakeup in DRX based on the DCI may include: receiving DCI from the base station, and identifying the wakeup in DRX when the DCI indicates the wakeup, and not identifying the wakeup in DRX when the DCI does not indicate the wakeup.

[0098] According to an embodiment, the information indicating the periodic CSI reporting may indicate that the periodic CSI reporting is performed when the timer is not started.

[0099] According to an embodiment, performing periodic CSI reporting based on whether information indicating periodic CSI reporting is included in configuration information about DCI may include: performing periodic CSI reporting when information indicating periodic CSI reporting is included in configuration information about DCI.

[0100] According to an embodiment, when information indicating periodic CSI reporting is not included in configuration information about DCI, periodic CSI reporting may not be performed.

[0101] According to an embodiment, the configuration information about the DCI may include offset information between the time when the search time of the DCI starts and the time when the timer is started.

[0102] According to an embodiment, when wake-up in DRX is identified, the operation method may further include: starting a timer to perform PDCCH monitoring during a duration indicated by information related to the timer; and performing periodic CSI reporting during the duration indicated by the information related to the timer.

[0103] According to an embodiment of the present disclosure, a terminal in a wireless communication system may include: a transceiver, and at least one processor, wherein the at least one processor is configured to: receive configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receive configuration information related to downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from the base station; identify wake-up in DRX based on DCI, and when wake-up in DRX is not identified, perform periodic channel state information (CSI) reporting based on whether information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0104] According to an embodiment, the at least one processor may further be configured to: receive DCI from the base station; identify wakeup in DRX when the DCI indicates wakeup; and not identify wakeup in DRX when the DCI does not indicate wakeup.

[0105] According to an embodiment, the information indicating periodic CSI reporting may not indicate that periodic CSI reporting is performed when the timer is not started.

[0106] According to an embodiment, the at least one processor may be further configured to: perform periodic CSI reporting when information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0107] According to an embodiment, when information indicating periodic CSI reporting is not included in configuration information about DCI, periodic CSI reporting may not be performed.

[0108] According to an embodiment, the configuration information about the DCI may include offset information between the time when the search time of the DCI starts and the time when the timer is started.

[0109] According to an embodiment, at least one processor may further be configured to: when a wake-up in DRX is identified, perform PDCCH monitoring during a duration indicated by information related to the timer by starting a timer; and perform periodic CSI reporting during the duration indicated by the information related to the timer.

[0110] According to an embodiment of the present disclosure, a computer-readable recording medium can implement a program for executing a method thereon, the method comprising: receiving configuration information related to discontinuous reception (DRX) through radio resource control (RRC) signaling from a base station, wherein the configuration information related to DRX includes information related to the cycle of DRX and information related to a timer for monitoring the duration of a physical downlink control channel (PDCCH) within the cycle of DRX; receiving configuration information related to downlink control information (DCI) related to an indication of wake-up in DRX through RRC signaling from a base station; identifying wake-up in DRX based on DCI; and when wake-up in DRX is not identified, performing periodic channel state information (CSI) reporting based on whether information indicating periodic CSI reporting is included in the configuration information about the DCI.

[0111] The methods according to the embodiments of the present disclosure as described in the detailed description or in the following claims can be implemented as hardware, software or a combination of hardware and software.

[0112] When implemented as software, a computer-readable storage medium or a computer program product storing one or more programs (e.g., software modules) may be provided. One or more programs stored in a computer-readable storage medium or a computer program product are configured to be executed by one or more processors in an electronic device. One or more programs include instructions for allowing an electronic device to perform a method according to a claim or embodiment of the present disclosure.

[0113] The program (e.g., software module or software) may be stored in a non-volatile memory including a random access memory (RAM) or flash memory, a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage device, a compact disk ROM (CD-ROM), a digital versatile disk (DVD), another optical storage device, or a magnetic tape cassette. Alternatively, the program may be stored in a memory including any combination of some or all of the above storage media. In addition, a plurality of such constituent memories may be provided.

[0114] In addition, the program can be stored in an attachable storage device that can be accessed through a communication network, such as the Internet, an intranet, a local area network (LAN), a wide area network (WLAN), or a storage area network (SAN), or a combination thereof. Such a storage device can access an electronic device for performing an embodiment of the present disclosure via an external port. In addition, an additional storage device on a communication network can access an electronic device to perform an embodiment of the present disclosure.

[0115] In the present disclosure, the term "computer program product" or "computer-readable recording medium" is used to completely indicate a memory, a hard disk installed in a hard disk drive, and a medium such as a signal. The "computer program product" or "computer-readable recording medium" is a component provided to the method of reporting channel state information according to the present disclosure.

[0116] In the above-mentioned embodiments of the present disclosure, according to the embodiments of the present disclosure, the elements included in the present disclosure are expressed in singular or plural form. However, the singular or plural form is appropriately selected for the conditions provided for ease of explanation, and the present disclosure is not limited to the singular or plural form. The element expressed in the singular form may include multiple elements, and the element expressed in the plural form may include a single element.

[0117] The specific embodiments of the present disclosure have been described in the description of the present disclosure, but it should be understood that various modifications can be made without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure is not limited to the above-mentioned embodiments of the present disclosure, and may be limited not only by the attached claims, but also by their equivalents.

Claims

1. An operating method of a terminal in a wireless communication system, the operating method comprising: receiving a radio resource control (RRC) reconfiguration message from a base station, wherein the RRC reconfiguration message includes information related to a discontinuous reception-on duration timer (DRX-onDurationTimer) and information indicating a periodic channel state information (CSI) report; receiving downlink control information DCI from the base station, the DCI including wake-up information indicating a first value or a second value; as well as In a case where the wake-up information indicates the first value, the DRX-onDurationTimer is not started, and the periodic CSI reporting is performed based on the information indicating the periodic CSI reporting.

2. The operating method according to claim 1, wherein: In a case where the wake-up information indicates the first value, the wake-up signal WUS is turned off; and In a case where the wake-up information indicates the second value, the WUS is on.

3. The operating method according to claim 1, further comprising: In a case where the wake-up information indicates the first value and the information indicating the periodic CSI report is not included in the RRC reconfiguration message, the DRX-onDurationTimer is not started and the periodic CSI report is not performed.

4. The operating method according to claim 1, further comprising: In a case where the wake-up information indicates the second value, the DRX-onDurationTimer is started, and the periodic CSI reporting is performed based on the information indicating the periodic CSI reporting.

5. The operating method according to claim 1, wherein: The RRC reconfiguration message also includes offset information between the start time of the DCI search time and the start time of the DRX-onDurationTimer.

6. The operating method according to claim 1, wherein: In a case where the wake-up information indicates the second value, the operating method further includes: By starting the DRX-onDurationTimer, physical downlink control channel PDCCH monitoring is performed during a duration indicated by information related to the DRX-onDurationTimer.

7. A terminal in a wireless communication system, the terminal comprising: Transceiver; as well as At least one processor configured to: receiving a radio resource control (RRC) reconfiguration message from a base station, wherein the RRC reconfiguration message includes information related to a discontinuous reception-on duration timer (DRX-onDurationTimer) and information indicating a periodic channel state information (CSI) report; receiving downlink control information DCI from the base station, the DCI including wake-up information indicating a first value or a second value; as well as In a case where the wake-up information indicates the first value, the DRX-onDurationTimer is not started, and the periodic CSI reporting is performed based on the information indicating the periodic CSI reporting.

8. The terminal according to claim 7, wherein: In a case where the wake-up information indicates the first value, the wake-up signal WUS is turned off; and In a case where the wake-up information indicates the second value, the WUS is on.

9. The terminal according to claim 7, wherein: The at least one processor is further configured to: In a case where the wake-up information indicates the first value and the information indicating the periodic CSI report is not included in the RRC reconfiguration message, the DRX-onDurationTimer is not started and the periodic CSI report is not performed.

10. The terminal according to claim 7, wherein: The at least one processor is further configured to: In a case where the wake-up information indicates the second value, the DRX-onDurationTimer is started, and the periodic CSI reporting is performed based on the information indicating the periodic CSI reporting.

11. The terminal according to claim 7, wherein: The RRC reconfiguration message also includes offset information between the start time of the DCI search time and the start time of the DRX-onDurationTimer.

12. The terminal according to claim 7, wherein: The at least one processor is further configured to: In the case where the wake-up information indicates the second value, By starting the DRX-onDurationTimer, physical downlink control channel PDCCH monitoring is performed during a duration indicated by information related to the DRX-onDurationTimer.

13. A computer-readable recording medium having stored therein a program for executing a method, the method comprising: receiving a radio resource control (RRC) reconfiguration message from a base station, wherein the RRC reconfiguration message includes information related to a discontinuous reception-on duration timer (DRX-onDurationTimer) and information indicating a periodic channel state information (CSI) report; receiving downlink control information DCI from the base station, the DCI including wake-up information indicating a first value or a second value; as well as In a case where the wake-up information indicates the first value, the DRX-onDurationTimer is not started, and the periodic CSI reporting is performed based on the information indicating the periodic CSI reporting.

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