Low-power wake-up signal and low-power synchronization signal transmitted on basis of transmission beam of synchronization signal block

Abstract

Proposed is an operating method of a first device (100) in a wireless communication system. The method comprises the steps of: receiving, from a base station (300), information about at least one first beam related to transmission of a synchronization signal block; acquiring information about at least one second beam serving as a basis for reception of a low-power synchronization signal; and receiving a first low-power synchronization signal on the basis of the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

Description

Low-power wake signal and low-power synchronization signal transmitted based on the transmission beam of the synchronization signal block

[0001] The present disclosure relates to a wireless communication system.

[0002] 5G NR is a successor technology to LTE (long term evolution) and is a new clean-slate type mobile communication system with characteristics such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, ranging from low frequency bands below 1 GHz to mid-frequency bands from 1 GHz to 10 GHz, and high frequency (millimeter wave) bands above 24 GHz.

[0003] The 6G (wireless communication) system aims for (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced energy consumption of battery-free IoT (internet of things) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision of the 6G system can be in four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can satisfy requirements such as those shown in Table 1 below. For example, Table 1 may represent an example of the requirements for a 6G system.

[0004] Maximum data rate per device 1 Tbps E2E latency 1 ms Maximum spectral efficiency 100 bps / Hz Mobility support up to 1000 km / hr Satellite integration Fully AI Fully autonomous driving Fully XR Fully haptic communication Fully

[0005] According to one embodiment of the present disclosure, a method that can be performed by a first device may be provided. For example, the method comprises: receiving information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtaining information about at least one second beam to be the basis for receiving a low-power synchronization signal; and receiving a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0006] According to one embodiment of the present disclosure, a first device may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the instructions executed by the at least one processor, the first device may: receive information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtain information about at least one second beam to be the basis for receiving a low-power synchronization signal; and receive a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0007] According to one embodiment of the present disclosure, a processing device configured to control a first device may be provided. For example, the processing device may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the instructions executed by the at least one processor, the first device may: receive information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtain information about at least one second beam to be the basis for receiving a low-power synchronization signal; and receive a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0008] According to one embodiment of the present disclosure, a non-transient computer-readable storage medium recording instructions may be provided. For example, when the instructions are executed, the first device may: receive information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtain information about at least one second beam that will be the basis for receiving a low-power synchronization signal; and receive a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0009] According to one embodiment of the present disclosure, a method that can be performed by a second device may be provided. For example, the method comprises: transmitting information about at least one first beam related to the transmission of a synchronization signal block to a first device; obtaining information about at least one second beam that will be the basis for receiving a low-power synchronization signal to the first device; and transmitting a first low-power synchronization signal based on the at least one second beam to the first device, wherein the at least one second beam may be included in the at least one first beam.

[0010] According to one embodiment of the present disclosure, a second device may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the instructions being executed by the at least one processor, the second device may: transmit information about at least one first beam related to the transmission of a synchronization signal block to the first device; obtain information about at least one second beam that will be the basis for the reception of a low-power synchronization signal to the first device; and transmit a first low-power synchronization signal based on the at least one second beam to the first device, wherein the at least one second beam may be included in the at least one first beam.

[0011] FIG. 1 illustrates a communication procedure between devices according to one embodiment of the present disclosure.

[0012] FIG. 2 shows a radio protocol architecture according to one embodiment of the present disclosure.

[0013] FIG. 3 shows the structure of a wireless frame according to one embodiment of the present disclosure.

[0014] FIG. 4 shows a slot structure of a frame according to one embodiment of the present disclosure.

[0015] FIG. 5 shows an example of a BWP according to one embodiment of the present disclosure.

[0016] FIG. 6 shows a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.

[0017] FIG. 7 illustrates an example of a communication scenario based on a 6G system according to an embodiment of the present disclosure.

[0018] FIG. 8 illustrates a procedure for transmitting system information for THz communication according to one embodiment of the present disclosure.

[0019] FIG. 9 shows a flowchart of the operation of a terminal performing one or more physical channels / signal transmissions to which the method proposed in the present disclosure can be applied, according to one embodiment of the present disclosure.

[0020] FIG. 10 shows a sequence of operations of a base station performing one or more physical channels / signal transmissions to which the method proposed in the present disclosure can be applied, according to one embodiment of the present disclosure.

[0021] FIG. 11 illustrates signaling between a base station and a terminal performing one or more physical channels / signal transmission and reception, to which the method proposed in the present disclosure can be applied, according to one embodiment of the present disclosure.

[0022] FIG. 12 shows transmission beams of a low-power synchronization signal (e.g., LP-SS) determined among transmission beams used in a synchronization signal block (e.g., SSB) burst according to one embodiment of the present disclosure.

[0023] FIG. 13 shows a transmission beam of a low-power wake signal (e.g., LP-WUS) determined based on a reference signal reception power associated with the transmission of low-power synchronization signals (e.g., LP-SS) according to one embodiment of the present disclosure.

[0024] FIG. 14 illustrates the procedure of a method that can be performed by a first device according to one embodiment of the present disclosure.

[0025] FIG. 15 illustrates the procedure of a method that can be performed by a second device according to one embodiment of the present disclosure.

[0026] FIG. 16 shows a communication system (1) according to one embodiment of the present disclosure.

[0027] FIG. 17 shows a wireless device according to one embodiment of the present disclosure.

[0028] FIG. 18 shows a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0029] FIG. 19 shows a wireless device according to one embodiment of the present disclosure.

[0030] FIG. 20 shows a portable device according to one embodiment of the present disclosure.

[0031] FIG. 21 shows a vehicle or an autonomous vehicle according to one embodiment of the present disclosure.

[0032] In the present disclosure, "A or B" may mean "only A," "only B," or "both A and B." Alternatively, in the present disclosure, "A or B" may be interpreted as "A and / or B." For example, in the present disclosure, "A, B or C" may mean "only A," "only B," "only C," or "any combination of A, B and C."

[0033] A slash ( / ) or a comma used in the present disclosure may mean "and / or." For example, "A / B" may mean "A and / or B." Accordingly, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B or C."

[0034] In the present disclosure, "at least one of A and B" may mean "only A," "only B," or "both A and B." Additionally, in the present disclosure, the expressions "at least one of A or B" or "at least one of A and / or B" may be interpreted as synonymous with "at least one of A and B."

[0035] Additionally, in the present disclosure, "at least one of A, B and C" may mean "only A," "only B," "only C," or "any combination of A, B and C." Additionally, "at least one of A, B or C" or "at least one of A, B and / or C" may mean "at least one of A, B and C."

[0036] Additionally, parentheses used in the present disclosure may mean "for example." Specifically, when indicated as "control information (PDCCH)," "PDCCH" may be proposed as an example of "control information." In other words, the "control information" of the present disclosure is not limited to "PDCCH," and "PDCCH" may be proposed as an example of "control information." Furthermore, even when indicated as "control information (e.g., PDCCH)," "PDCCH" may be proposed as an example of "control information."

[0037] In the following explanation, 'when, if, in case of' can be replaced with 'based on'.

[0038] In the present disclosure, the device acquiring information may include the information being (pre)set to the device, the information being received by the device from another entity, and the device generating the information.

[0039] Technical features described individually within one drawing in this disclosure may be implemented individually or simultaneously.

[0040] In the present disclosure, a higher layer parameter may be a parameter that is set for the terminal, pre-set, or pre-defined. For example, a base station or a network may transmit the higher layer parameter to the terminal. For example, the higher layer parameter may be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0041] In the present disclosure, "configured or defined" may be interpreted as being configured or pre-configured to a device through pre-defined signaling from a base station or network (e.g., SIB, MAC, RRC, DCI (downlink control information), etc.). In the present disclosure, "configured or defined" may be interpreted as being configured or pre-configured to a device through pre-defined signaling from another device (e.g., MAC, RRC, SCI (sidelink control information), control information signaled between devices, etc.). In the present disclosure, "configured or defined" may be interpreted as being pre-configured to a device.

[0042] In the present disclosure, user equipment (UE) may refer to a device, a portable device, a wireless device, etc. In the present disclosure, a base station (BS) may refer to a radio access network (RAN) node, a non-terrestrial network (NTN) cell / node, a transmission reception point (TRP), a network, an integrated access and backhaul (IAB) node, a device, a portable device, a wireless device, etc.

[0043] The technology proposed in this disclosure can be used in various wireless communication systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (institute of electrical and electronics engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.

[0044] The technology proposed in this disclosure can be implemented as 6G wireless technology and can be applied to various 6G systems. For example, 6G systems may have key factors such as eMBB (enhanced mobile broadband), URLLC (ultra-reliable low latency communications), mMTC (massive machine-type communication), AI (artificial intelligence) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0045] FIG. 1 illustrates a communication procedure between devices according to one embodiment of the present disclosure. The embodiment of FIG. 1 may be combined with various embodiments of the present disclosure.

[0046] Referring to FIG. 1, in step S101, the first device and the second device can perform synchronization. For example, the first device may be a terminal and / or at least one of the devices proposed in the present disclosure. For example, the second device may be a base station, a network, a RAN node, an NTN node / cell, a TRP, a terminal and / or at least one of the devices proposed in the present disclosure. For example, the first device may perform an initial cell search operation. For example, the first device may detect at least one synchronization signal transmitted according to a rule predefined by the second device. Here, for example, the synchronization signal may include a plurality of synchronization signals (e.g., primary synchronization signal, secondary synchronization signal, etc.) classified according to structure or use. Through this, the first device can identify the boundaries of the frame, subframe, time unit, slot, and / or symbol of the second device, and the first device can obtain information about the second device (e.g., cell identifier).

[0047] In step S103, the first device may obtain system information transmitted by the second device. For example, the system information may include information related to the attributes, characteristics, and / or capabilities of the second device that are necessary to connect to the second device and use the service. For example, the system information may be classified according to content (e.g., whether it is essential for connection), transmission structure (e.g., the channel used, whether it is provided on-demand), etc. For example, the system information may be classified into a master information block (MIB) and a system information block (SIB). For example, if necessary, the first device may transmit a signal requesting the system information prior to receiving the system information. For example, the request and provision of the system information may be performed after a random access procedure described later.

[0048] In step S105, the first device and the second device may perform a random access procedure. For example, the first device may transmit and / or receive at least one message for the random access procedure (e.g., random access preamble, random access response message, etc.) based on information related to the random access channel of the second device obtained through system information (e.g., channel location, channel structure, structure of supported preamble, etc.). For example, the first device may transmit a preamble (e.g., Msg1) through the random access channel, and the first device may receive a random access response message (e.g., Msg2). The first device may transmit a message (e.g., Msg3) containing information related to the first device (e.g., identification information) to the second device using scheduling information included in the random access response message, and the first device may receive a message (e.g., Msg4) for contention resolution and / or connection establishment. For example, Msg1 and Msg3 can be transmitted and received as a single message (e.g., MsgA), and / or Msg2 and Msg4 can be transmitted and received as a single message (e.g., MsgB).

[0049] In step S107, the first device and the second device may perform signaling of control information. Here, for example, the control information may be defined in various layers, such as a layer controlling the connection (e.g., a radio resource control (RRC) layer), a layer handling mapping between a logical channel and a transmission channel (e.g., a media access control (MAC) layer), and a layer handling a physical channel (e.g., a physical (PHY) layer). For example, the first device and the second device may perform at least one of signaling to establish a connection, signaling to determine settings related to communication, and / or signaling to indicate allocated resources. For example, the control information may be signaled / transmitted through a control channel. For example, the control information and / or the control channel may be used to schedule at least one of data, a data channel (e.g., a shared channel), and / or control information on the data channel.

[0050] In step S109, the first device and the second device may transmit and / or receive data. For example, the first device and the second device may process data based on signaling of control information and transmit and / or receive it. For example, when transmitting data, the first device or the second device may perform at least one of channel encoding, rate matching, scrambling, constellation mapping, layer mapping, waveform modulation, antenna mapping, and / or resource mapping on the information bits. For example, when receiving data, the first device or the second device may perform at least one of signal extraction from resources, antenna-specific waveform demodulation, signal placement considering layer mapping, constellation demapping, descrambling, and / or channel decoding.

[0051] For example, the layers of the radio interface protocol between the first device and the second device can be classified into L1 (layer 1), L2 (layer 2), L3 (layer 3), etc. For example, the physical layer belonging to layer 1 can provide an information transfer service using a physical channel, and the radio resource control (RRC) layer located at layer 3 can perform the role of controlling radio resources between the first device and the second device. To this end, for example, the RRC layer can exchange RRC messages between the first device and the second device.

[0052] FIG. 2 illustrates a radio protocol architecture according to one embodiment of the present disclosure. The embodiment of FIG. 2 may be combined with various embodiments of the present disclosure. For example, FIG. 2(a) may represent a radio protocol stack in the user plane for uplink communication or downlink communication, and FIG. 2(b) may represent a radio protocol stack in the control plane for uplink communication or downlink communication. For example, FIG. 2(c) may represent a radio protocol stack in the user plane for device-to-device communication, and FIG. 2(d) may represent a radio protocol stack in the control plane for device-to-device communication.

[0053] For example, the physical layer can provide information transmission services to upper layers using a physical channel. For example, the physical layer can be connected to the upper layer, the MAC (medium access control) layer, through a transport channel. For example, data can be transmitted between the MAC layer and the physical layer through a transport channel. For example, transport channels can be classified according to how and with what characteristics data is transmitted through a wireless interface. For example, data can be transmitted through a physical channel between different physical layers, for example, between the physical layers of a first device and a second device. For example, the physical channel can be modulated using the OFDM (orthogonal frequency division multiplexing) method, and time and frequency can be utilized as wireless resources.

[0054] For example, the MAC layer can provide services to the upper layer, the RLC (radio link control) layer, through logical channels. For example, the MAC layer can provide mapping functions from multiple logical channels to multiple transmission channels. For example, the MAC layer can provide logical channel multiplexing functions through mapping from multiple logical channels to a single transmission channel. For example, the MAC sublayer can provide data transmission services over logical channels.

[0055] For example, the RLC layer can perform concatenation, segmentation, and reassembly of RLC service data units (SDUs). For example, to guarantee various quality of service (QoS) required by a radio bearer (RB), the RLC layer can provide three modes of operation: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). For example, AM RLC can provide error correction through automatic repeat requests (ARQ).

[0056] For example, the RRC (radio resource control) layer may be defined only in the control plane. For example, the RRC layer may be responsible for controlling logical channels, transmission channels, and physical channels in relation to the configuration, reconfiguration, and release of radio bearers. For example, RB may refer to a logical path provided by the first layer (e.g., physical layer) and the second layer (e.g., MAC layer, RLC layer, PDCP (packet data convergence protocol) layer, SDAP (service data adaptation protocol) layer, etc.) for data transfer between a first device and a second device.

[0057] For example, the functions of the PDCP layer in the user plane may include the delivery of user data, header compression, and ciphering. For example, the functions of the PDCP layer in the control plane may include the delivery of control plane data and encryption / integrity protection.

[0058] For example, the establishment of an RB can mean the process of defining the characteristics of the wireless protocol layer and channel to provide specific services, and setting each specific parameter and method of operation. For example, an RB can be divided into two types: an SRB (signaling radio bearer) and a DRB (data radio bearer). For example, an SRB can be used as a channel to transmit RRC messages in the control plane, and a DRB can be used as a channel to transmit user data in the user plane.

[0059] For example, a base station-to-terminal transmission (e.g., DL transmission) channel may include at least one of a broadcast channel (BCH) that transmits system information and / or a downlink shared channel (SCH) that transmits user traffic or control messages. For example, traffic or control messages for a downlink multicast or broadcast service may be transmitted via a downlink SCH or via a separate downlink multicast channel (MCH). Meanwhile, an uplink transmission channel may include at least one of a random access channel (RACH) that transmits initial control messages and / or a shared channel (SCH) that transmits user traffic or control messages. For example, a logical channel located above the transmission channel and mapped to the transmission channel may include at least one of a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), and / or a multicast traffic channel (MTCH).

[0060] FIG. 3 shows the structure of a wireless frame according to one embodiment of the present disclosure. The embodiment of FIG. 3 can be combined with various embodiments of the present disclosure.

[0061] Referring to FIG. 3, radio frames may be used, for example, in uplink transmission, base station-to-terminal transmission (e.g., DL transmission), and / or device-to-device transmission. For example, a radio frame may have a length of 10 ms and may be defined as two 5 ms half-frames (HF). For example, a half-frame may contain five 1 ms subframes (SF). For example, a subframe may be divided into one or more slots, and the number of slots within a subframe may be determined by subcarrier spacing (SCS). For example, each slot may contain 12 or 14 OFDM(A) symbols according to a cyclic prefix (CP).

[0062] For example, when normal CP is used, each slot may contain 14 symbols. For example, when extended CP is used, each slot may contain 12 symbols. Here, for example, the symbols may include OFDM symbols (or CP-OFDM symbols) and SC-FDMA (single carrier-FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0063] Table 2 below shows the number of symbols per slot (N) according to the SCS setting (u) when Normal CP or Extended CP is used. slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot ) exemplifies.

[0064] CP Type SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot Normal CP 15kHz (u=0) 1410 130kHz (u=1) 1420 260kHz (u=2) 1440 4120kHz (u=3) 1480 8240kHz (u=4) 14160 16 Extended CP 60kHz (u=2) 1240 4

[0065] For example, OFDM(A) numerology (e.g., SCS, CP length, etc.) may be configured differently among multiple cells merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., subframe, slot, or TTI (transmit time interval)) composed of the same number of symbols may be configured differently among the merged cells. For example, in the present disclosure, time resources such as subframes, slots, TTI, etc. may be referred to as time units.

[0066] For example, multiple numerologies or SCSs may be supported to support various services. For example, if the SCS is 15 kHz, a wide area in traditional cellular bands may be supported, and if the SCS is 30 kHz / 60 kHz, dense-urban, lower latency, and wider carrier bandwidth may be supported. For example, if the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz may be supported to overcome phase noise.

[0067] FIG. 4 shows a slot structure of a frame according to one embodiment of the present disclosure. The embodiment of FIG. 4 can be combined with various embodiments of the present disclosure.

[0068] Referring to FIG. 4, for example, a slot may include multiple symbols in the time domain. For example, a carrier may include multiple subcarriers in the frequency domain. For example, a resource block (RB) may be defined as multiple consecutive subcarriers in the frequency domain. For example, a bandwidth part (BWP) may be defined as multiple consecutive (P)RBs ((physical) resource blocks) in the frequency domain and may correspond to a single numerology (e.g., SCS, CP length, etc.). For example, a carrier may include up to N BWPs (where N is a positive integer). For example, data communication may be performed through an active BWP. For example, each element may be referred to as a resource element (RE) in a resource grid and may be mapped to a single complex symbol.

[0069] For example, a BWP can be a continuous set of PRBs in a given numerology. For example, a PRB can be selected from a continuous subset of common resource blocks (CRBs) for a given numerology on a given carrier.

[0070] For example, the BWP may be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, the terminal may not monitor downlink radio link quality on DL BWPs other than the active DL BWP on the PCell (primary cell). For example, the terminal may not receive PDCCH (physical downlink control channel), PDSCH (physical downlink shared channel), or CSI-RS (channel state information-reference signal) (except for RRM (radio resource management)) outside of the active DL BWP. For example, the terminal may not trigger CSI (channel state information) reporting for an inactive DL BWP. For example, the terminal may not transmit PUCCH (physical uplink control channel) or PUSCH (physical uplink shared channel) outside of the active UL (uplink) BWP. For example, for the downlink, the initial BWP can be given as a consecutive set of resource blocks (RBs) for the remaining minimum system information (RMSI) CORESET (control resource set) (set by the physical broadcast channel (PBCH)). For example, for the uplink, the initial BWP can be given by the system information block (SIB) for the random access procedure. For example, the default BWP can be set by the upper layer. For example, the initial value of the default BWP can be the initial DL BWP.For energy saving, if the terminal fails to detect DCI (downlink control information) for a certain period, the terminal can switch the active BWP of the terminal to the default BWP.

[0071] In the present disclosure, PSCCH may be replaced with a control channel, a physical control channel, a control channel associated with a sidelink, a physical control channel associated with a sidelink, a physical control channel between devices, etc. In the present disclosure, PSSCH may be replaced with a shared channel, a physical shared channel, a shared channel associated with a sidelink, a physical shared channel associated with a sidelink, a physical shared channel between devices, etc. For example, SL communication may be replaced with device-to-device communication. For example, in terms referring to various channels and / or signals associated with SL communication, the SL portion may be replaced with "between devices".

[0072] In the present disclosure, PUCCH may be replaced with a control channel, a physical control channel, a control channel associated with an uplink, a physical control channel associated with an uplink, a device-to-base station physical control channel, a terminal-to-base station physical control channel, etc. In the present disclosure, a terminal-to-base station physical sharing channel (e.g., PUSCH) may be replaced with a sharing channel, a physical sharing channel, a sharing channel associated with an uplink, a physical sharing channel associated with an uplink, a device-to-base station physical sharing channel, a terminal-to-base station physical sharing channel, etc. For example, UL communication may be replaced with terminal-to-base station communication or device-to-base station communication. For example, in terms referring to various channels and / or signals associated with UL communication, the UL portion may be replaced with "device-to-base station" or "terminal-to-base station".

[0073] In the present disclosure, a base station-to-terminal physical control channel (e.g., PDCCH) may be replaced with a control channel, a physical control channel, a control channel associated with a downlink, a physical control channel associated with a downlink, a base station-to-device physical control channel, a base station-to-terminal physical control channel, etc. In the present disclosure, a base station-to-terminal physical sharing channel (e.g., PDSCH) may be replaced with a sharing channel, a physical sharing channel, a sharing channel associated with a downlink, a physical sharing channel associated with a downlink, a base station-to-device physical sharing channel, a base station-to-terminal physical sharing channel, etc. For example, DL communication may be replaced with base station-to-device communication or base station-to-terminal communication. For example, in terms referring to various channels and / or signals associated with DL communication, the DL portion may be replaced with "base station-to-device" or "base station-to-terminal".

[0074] FIG. 5 illustrates an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 5 may be combined with various embodiments of the present disclosure. In the embodiment of FIG. 5, it is assumed that there are three BWPs.

[0075] Referring to FIG. 5, for example, a common resource block (CRB) may be a numbered carrier resource block from one end of the carrier band to the other, and a PRB may be a numbered resource block within each BWP. For example, point A may indicate a common reference point for the resource block grid.

[0076] For example, BWP is point A, offset from point A (N start BWP ) and bandwidth (N size BWPIt can be set by ). For example, point A may be an external reference point of the PRB of a carrier where the subcarrier 0 of all numerologies (e.g., all numerologies supported by the network in that carrier) are aligned. For example, offset may be the PRB interval between the lowest subcarrier in a given numerology and point A. For example, bandwidth may be the number of PRBs in a given numerology.

[0077] FIG. 6 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure. The embodiment of FIG. 6 can be combined with various embodiments of the present disclosure.

[0078] As core implementation technologies for 6G systems, technologies such as artificial intelligence (AI), THz (Terahertz) communication, optical wireless technology, free space optical transmission (FSO) backhaul networks, large-scale MIMO (multiple input multiple output) technology, blockchain, 3D networking, quantum communication, unmanned aerial vehicles, cell-free communication, wireless information and energy transfer (WIET), integration of sensing and communication, integration of access backhaul networks, holographic beamforming, big data analysis, and large intelligent surface (LIS) can be adopted.

[0079] - Artificial Intelligence: Introducing AI into communications can streamline and enhance real-time data transmission. AI can determine how complex target tasks are performed using numerous analyses. For example, AI can increase efficiency and reduce processing latency. Time-consuming tasks such as handover, network selection, and resource scheduling can be performed instantly using AI. AI can also play a significant role in M2M, machine-to-human, and human-to-machine communication. Furthermore, AI can enable rapid communication in Brain-Computer Interfaces (BCI). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0080] - THz Communication: Data transmission rates can be increased by expanding bandwidth. This can be achieved by using sub-THz communication with wide bandwidth and applying advanced large-scale MIMO technology. THz waves, also known as sub-millimeter radiation, generally refer to a frequency band between 0.1 THz and 10 THz with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz-300 GHz band range (Sub-THz band) is considered the primary portion of the THz band for cellular communication. Adding the Sub-THz band to the mmWave band increases 6G cellular communication capacity. Among the defined THz bands, the 300 GHz-3 THz band is located in the far-infrared (IR) frequency band. Although the 300 GHz-3 THz band is part of the optical band, it lies at the boundary of the optical band and immediately following the RF band. Therefore, this 300 GHz-3 THz band exhibits similarities to RF. Key characteristics of THz communication include (i) widely available bandwidth to support very high data transmission rates, and (ii) high path loss occurring at high frequencies (highly directional antennas are indispensable). The narrow beam width generated by highly directional antennas reduces interference. The small wavelength of THz signals allows a much larger number of antenna elements to be integrated into devices and BSs operating in this band. This enables the use of advanced adaptive array technologies that can overcome range limitations.

[0081] - Large-scale MIMO technology

[0082] - Hologram beamforming (HBF)

[0083] - Optical wireless technology

[0084] - Free Space Optical Transmission Backhaul Network (FSO backhaul network)

[0085] - Quantum communication

[0086] - Cell-free communication

[0087] - Integration of wireless information and power transmission

[0088] - Integration of wireless communication and sensing

[0089] - Integrated access and backhaul network

[0090] - Big data analysis

[0091] - Reconfigurable intelligent metasurface

[0092] - Metaverse

[0093] - blockchain

[0094] - Advanced Air Mobility (AAM): AAM can be a broad concept encompassing Urban Air Mobility (UAM), Regional Air Mobility (RAM), and Uncrewed Aerial Systems (UAS). For example, AAM may include UAM, RAM, UAS, and UAVs (uncrewed aerial vehicles).

[0095] - Autonomous driving (self-driving): V2X (vehicle to everything), a core element of building autonomous driving infrastructure, refers to technologies that enable vehicles to communicate and share with various elements on the road to perform autonomous driving, such as wireless communication between vehicles (vehicle to vehicle, V2V) and between vehicles and infrastructure (vehicle to infrastructure, V2I).

[0096] - Non-terrestrial Network (NTN): An NTN may refer to a network or network segment that utilizes RF (radio frequency) resources mounted on a satellite (or UAS platform). The use of NTN services may be considered to secure wider coverage or to provide wireless communication services in locations where the installation of wireless communication base stations is difficult.

[0097] - Integrated Sensing and Communication (ISAC): Wireless sensing is a technology that uses radio frequencies to determine the instantaneous linear velocity, angle, distance (range), etc., of an object, thereby obtaining information about the characteristics of the environment and / or objects within the environment.

[0098] - Reconfigurable Intelligent Surface (RIS): An RIS can be used to manipulate and enhance signal propagation in a wireless communication environment. For example, an RIS can be composed of many small antennas or metasurfaces arranged on a surface, each of which can actively control the phase, amplitude, polarization, etc., of the reflected signal. For instance, an RIS can improve signal reception by controlling the path, phase, and / or strength of the propagating signal. For instance, power consumption can be very low because power is consumed only for controlling the phase and amplitude of the small antennas. For instance, since an RIS can be reconfigured to suit various environments, it can meet diverse communication requirements and operate effectively in dynamic network environments.

[0099] FIG. 7 illustrates an example of a communication scenario based on a 6G system according to an embodiment of the present disclosure. The embodiment of FIG. 7 can be combined with various embodiments of the present disclosure.

[0100] Referring to FIG. 7, NTN communication can be performed based on a satellite network, HIBS (high-altitude platform stations (HAPS) as international mobile telecommunications (IMT) base stations (BS)), and an aeronautical communication-capable terminal (e.g., AAM). For example, to improve coverage, devices such as a satellite network, HIBS, and an aeronautical communication-capable terminal (e.g., AAM) can act as relays. For example, an AAM can communicate with a base station, a satellite network, etc., and / or an AAM can communicate directly with a terminal, another AAM, etc.

[0101] Transmitting system information (e.g., MIB) in the THz frequency band can be inefficient because, in the case of high frequency bands, beam sweeping must be performed more frequently to cover the entire area of ​​the cell as the beam width becomes narrow. In particular, transmitting system information in this manner can be even more inefficient when there are not many users in the cell. Accordingly, a system information transmission procedure as shown in FIG. 8 below may be used.

[0102] FIG. 8 illustrates a procedure for transmitting system information for THz communication according to one embodiment of the present disclosure. The embodiment of FIG. 8 may be combined with various embodiments of the present disclosure.

[0103] The embodiment of FIG. 8 was created considering a THz situation, but it is also applicable in a 6G communication environment where THz is not applied. In addition, the procedure illustrated in FIG. 8 can be combined with various embodiments of the present disclosure described below. For example, the embodiments described below can be performed based on system information obtained by the procedure illustrated in FIG. 8.

[0104] Referring to FIG. 8, in step S801, the base station (80) can transmit system information of cell #1 through cell #2. For example, the base station (820) provides at least two cells, where cell #1 uses a THz frequency band and cell #2 uses a frequency band other than the THz frequency band. Here, the system information may include at least one of SFN, PDCCH configuration for SIB1, cell barring, cell re-selection, and subcarrier spacing generated at the higher layer, and at least one of SFN, half frame indicator, and SSB index generated at the physical layer. To this end, for example, cell #1 and cell #2 may have a secondary cell and primary cell relationship.

[0105] In step S803, the terminal (810) can obtain synchronization for cell #1. Synchronization can be obtained by detecting a synchronization signal. Generally, synchronization is obtained prior to receiving system information, but since the system information of cell #1 is received in cell #2, synchronization for cell #1 can be obtained after receiving system information. For example, the terminal (810) can obtain synchronization based on system information. However, unlike FIG. 8, according to another example, synchronization acquisition can be performed prior to step S801.

[0106] In step S805, the terminal (810) may transmit a signal to connect to cell #1. For example, the signal may include a random access preamble. The structure of the signal and the resource (e.g., channel) for transmitting the signal may be identified through system information. Subsequently, in step S807, the terminal (810) and the base station (820) may perform a connection procedure to cell #1 and perform communication. In this step, operations according to various embodiments described below may be performed.

[0107] The procedure described with reference to FIG. 8 may be performed when the terminal (801) first connects to cell #1 of the base station (820). Alternatively, a similar procedure may be performed when the terminal (801) handovers to cell #1 of the base station (820). However, in the case of a handover, the system information of cell #1 may be received from a cell of a different base station other than cell #2 of the base station (820).

[0108] The low-power wake-up signal / receiver is described below.

[0109] 5G systems have been designed and developed for both mobile telephony and vertical use cases. In 5G, in addition to latency, reliability, and availability, device energy efficiency can also be critical. Currently, 5G devices may need to be recharged on a weekly or daily basis, depending on an individual's usage time. Typically, 5G devices can consume tens of milliwatts in RRC idle / inactive states and hundreds of milliwatts when RRC connected. Designs that extend battery life can be essential for improving energy efficiency and enhancing the user experience.

[0110] Energy efficiency can be even more critical for devices without a continuous energy source, such as those using small rechargeable and single coin cell batteries. In vertical use cases, sensors and actuators can be widely used for monitoring, measurement, charging, etc. Generally, these batteries cannot be recharged and can be expected to last for at least several years, as described in the technical literature. Wearable devices may include smartwatches, rings, e-health devices, and medical monitoring devices. With typical battery capacities, it may be difficult to last up to 1 to 2 weeks as needed.

[0111] Power consumption may vary depending on the length of the configured weather period, such as the phasing cycle. To meet the battery life requirements mentioned above, a large value of extended discontinuous reception (e.g., eDRX) cycles is used, which is expected to result in longer latency; this may not be suitable for services requiring both long battery life and short latency. For example, in fire detection and extinguishing use cases, fire shutters must close and sprinklers activated by actuators must be activated within 1 to 2 seconds after a fire is detected by a sensor; however, long extended discontinuous reception (e.g., eDRX) cycles cannot meet the latency requirements, so extended discontinuous reception (e.g., eDRX) may not be suitable for use cases where latency is critical.

[0112] Currently, since the terminal must wake up periodically during discontinuous reception (e.g., DRX) cycles, power consumption during periods without signal or data traffic may account for the majority of power consumption. Power consumption could be drastically reduced if the terminal could wake up only when triggered, such as during paging. This can be achieved by using a separate receiver capable of triggering the main radio with a wake-up signal and monitoring the wake-up signal with ultra-low power consumption. The main radio operates for data transmission and reception and can be turned off or set to hibernation mode when not powered on.

[0113] The terms that may be used in this document are as follows.

[0114] - Main Radio (MR): A transmit / receive module operating for NR signals / channels, excluding signals / channels related to low-power weather.

[0115] - Low-power weather receiver (e.g., LP-WUR(LR)): A receiving module that operates to receive / process signals / channels related to low-power weather.

[0116] The following use cases can be considered for low-power weather signals / weather radios (e.g., LP-WUS / WUR):

[0117] - IoT use cases including industrial wireless sensors, controllers, actuators, etc.

[0118] - Examples of wearable devices such as smartwatches, rings, e-health related devices, and medical monitoring devices,

[0119] - eMBB examples including XR / smart glasses, smartphones, etc.

[0120] The following describes technology related to low-power weather signals / weather radios (e.g., LP-WUS / WUR).

[0121] The following investigations can be conducted regarding research on low-power weather signals and receivers for NR.

[0122] - Low-power weather signals and receivers including power saving effects, coverage, system overhead impact, network energy impact, and other related aspects

[0123] - Provision of analysis on receiver architecture, power consumption, noise levels, etc. for low-power weather receivers

[0124] - L1 design and procedure changes required to support low-power weather signal and link performance evaluation

[0125] - Changes to the upper-layer protocols required to support low-power weather signals

[0126] - Related upper-level influence

[0127] It was observed that in RRC idle / active mode, when sufficient relaxation is applied to the main radio (e.g., MR) RRM measurement, significant terminal power saving gains (up to 90% or more) can be obtained by triggering terminal main radio (e.g., MR) paging monitoring using a low-power wake signal / wake radio (e.g., LP-WUS / WUR) compared to the existing idle mode discontinuous reception (e.g., I-DRX) operation (with and without paging early indication (e.g., PEI). Additionally, compared to the existing extended discontinuous reception (e.g., extended DRX; eDRX) operation, if the low-power wake signal (e.g., LP-WUS) monitoring and the corresponding paging monitoring after the main radio (e.g., MR) wake are performed without restriction within the paging time window (e.g., PTW) of the existing extended discontinuous reception (e.g., eDRX), significant reduction in paging latency and moderate terminal power saving gains are observed.

[0128] In RRC connection mode, it was observed that, compared to existing terminal power saving techniques, moderate terminal power saving gains (up to 10% or more) with minimal capacity impact can be obtained by triggering monitoring of the terminal's main radio (e.g., MR) base station-to-terminal physical control channel (e.g., PDCCH) using low-power wake signal / wake radio (e.g., LP-WUS / WUR) in various types of XR traffic and system load scenarios. Additionally, it was observed that significant terminal power saving gains (up to 60% or more) and moderate UPT improvements (up to 10% or more) can be obtained for FTP and IM traffic when the terminal main radio (e.g., MR) is switched to a maximum sleep state during NR low-power wake signal (e.g., LP-WUS) monitoring. Furthermore, in recent research, the feasibility of providing cell RRM measurement offloading from the terminal's main radio (e.g., MR) to the low-power wake receiver (e.g., LP-WUR) has been verified through reasonable evaluation methodologies. In addition, several issues were identified at the upper level that could be further discussed at the WI stage.

[0129] Below, the paging procedure for idle / inactive states in 5G NR is described.

[0130] In 5G NR, if a terminal does not have data transmissions / receptions in progress, the terminal may enter an RRC_IDLE or RRC_INACTIVE mode to save power. When base station-to-terminal data (e.g., DL data) for the terminal arrives at the network, the network may send a paging message at a paging occasion (PO) to trigger an RRC setup procedure, an RRC Connection Resume procedure, etc. A paging occasion (e.g., PO) is a set of monitoring times for a base station-to-terminal physical control channel (e.g., physical downlink control channel; PDCCH) and may consist of multiple time slots (e.g., subframes or OFDM symbols), and at a paging occasion (e.g., PO), base station-to-terminal control information (e.g., downlink control information; DCI) having a CRC scrambled with P-RNTI may be transmitted. For example, the following information may be transmitted by a base station-to-terminal control information (e.g., DCI) format (e.g., DCI format 1_0) having a CRC scrambled with P-RNTI:

[0131] - Short Messages Indicator according to Table 3

[0132] - Short messages according to Table 4. In Table 4, bit 1 is the most significant bit (MSB).

[0133] - Frequency Domain Resource Allocation

[0134] - Time domain resource allocation

[0135] - VRB-to-PRB mapping according to Table 5

[0136] - Modulation and coding methods

[0137] - Transport Block (TB) Scaling

[0138] - Tracking Reference Signal (TRS) Availability Indicator

[0139] - Reserved bits.

[0140] Bit Fields Short Message Indicator 00 Reserved 01 Only scheduling information for paging and TRS availability indicators are displayed in base station-to-terminal control information (e.g., DCI) if trs-ResourceSetConfig is configured 10 Only short messages and TRS availability indicators are displayed in base station-to-terminal control information (e.g., DCI) if trs-ResourceSetConfig is configured 11 Both scheduling information for paging, TRS availability indicators, and short messages are included in base station-to-terminal control information (e.g., DCI) if trs-ResourceSetConfig is configured

[0141] Bit short message 1systemInfoModification1 if set to: Indication of Broadcast Control Channel (BCCH) modifications other than SIB6, SIB7, and SIB8 2etwsAndCmasIndication1 if set to: Indication of Earthquake and Tsunami Warning System (ETWS) primary notifications and / or ETWS secondary notifications and / or Commercial Mobile Alert Service (CMAS) notifications 3stopPagingMonitoring this bit is available only when there is shared spectrum channel access and the RRC parameter nrofPDCCH-MonitoringOccasionPerSSB-InPO is present. 1 if set to: Indication that the terminal may stop monitoring base station-to-terminal physical control channel (e.g., PDCCH) time(s) for paging at this paging time as specified in the technical literature 4systemInfoModification-eDRX1 if set to: Indication of BCCH modifications other than SIB6, SIB7, and SIB8. This instruction may apply only to terminals using an extended discontinuous receive (e.g., eDRX) period longer than the broadcasting control channel (e.g., BCCH) correction period.5 - 8 It is not used in current technical literature and is ignored if the terminal receives it.

[0142] Bit field mapped to index VRB-to-PRB mapping 0 Not interleaved 1 Interleaved

[0143] In the present disclosure, a base station-to-terminal physical control channel (e.g., PDCCH) carrying a base station-to-terminal control information (e.g., DCI) format having a CRC scrambled with P-RNTI is referred to as a paging base station-to-terminal physical control channel (e.g., PDCCH), and a base station-to-terminal physical shared channel (e.g., physical downlink shared channel; PDSCH) scheduled by the paging base station-to-terminal physical control channel (e.g., PDCCH) is referred to as a paging base station-to-terminal physical shared channel (e.g., PDSCH). A terminal can decode the paging base station-to-terminal physical shared channel (e.g., PDSCH) based on scheduling information (e.g., frequency domain resource allocation, modulation and coding scheme, etc.) within the paging base station-to-terminal physical control channel (e.g., PDCCH). A paging base station-to-terminal physical shared channel (e.g., PDSCH) carries paging messages, which are used for notification to one or more terminals and may include one or more terminal identifiers (IDs). For example, the paging message and / or fields within the paging message may include information related to a paging record list, lateNonCriticalExtension, nonCriticalExtension, paging group list, terminal identifier associated with the paging record, access type associated with the paging record, paging cause associated with the paging record, TMSI associated with the paging terminal identifier, RNTI associated with the paging terminal identifier, etc.

[0144] The following table provides examples of paging messages and descriptions of the fields within them.

[0145] Description of Paging Record Fields Access Type (accessType) Indicates whether the paging message was generated by a PDU session from a non-3GPP access. Paging Record List (pagingRecordList) If the network contains pagingRecordList-v1700, it contains the same number of entries and is listed in the same order as pagingRecordList (e.g., without suffixes). Paging Cause Indicates whether the paging message was generated by IMS Voice. If this field is present, it may mean that the paging entry is for IMS Voice. If the upper layer supports paging cause and this field is absent but pagingRecordList-v1700 is present, it may mean that the paging entry is for a service other than IMS Voice. Otherwise, the paging cause may not be determined.

[0146] For example, in multi-beam operations, the terminal may assume that the same paging message is repeated in all transmitted beams. The paging message may be the same for both radio access network (RAN) initiation paging and core network (CN) initiation paging.

[0147] A paging frame (PF) is a radio frame and may include one or more paging times (e.g., PO)(s) or a starting point of a paging time (e.g., PO).

[0148] For example, the terminal can monitor one paging time (e.g., PO) per discontinuous reception (e.g., DRX) cycle. The paging frame (e.g., PF) and paging time (e.g., PO) for paging can be determined by predefined formulas.

[0149] For example, in some implementations, the system frame number (SFN) for a paging frame (e.g., PF) may be determined by (SFN + PF_offset) mod T = (T div N) * (UE_ID mod N), and an index i_s indicating the index of a paging time (e.g., PO) may be determined by i_s = floor(UE_ID) mod Ns, where T is a terminal discontinuous reception (e.g., DRX) cycle and is determined by the minimum value of terminal-specific discontinuous reception (e.g., DRX) value(s) and / or default discontinuous reception (e.g., DRX) value broadcast as system information, N is the total number of paging frames in T, Ns is the number of paging times for a paging frame (e.g., PF), PF_offset is the offset used for determining the paging frame (e.g., PF), and UE_ID may be a value determined based on 5G-S-TMSI.

[0150] For example, parameters Ns regarding the number of paging times per paging frame, parameters nAndPagingFrameOffset used to derive the total number of paging frames in T, parameters nrofPDCCH-MonitoringOccasionsPerSSB-InPO regarding the number of base station-to-terminal physical control channel (e.g., PDCCH) monitoring times corresponding to SSBs in paging times, and the length of the default discontinuous reception (e.g., DRX) cycle may be signaled by SIB1, and the values ​​of N and PF_offset may be derived from the parameters nAndPagingFrameOffset.

[0151] For example, base station-to-terminal physical control channel (e.g., PDCCH) monitoring times for paging can be determined based on the parameter firstPDCCH-MonitoringOccasionOfPO, which indicates the first base station-to-terminal physical control channel (e.g., PDCCH) monitoring time for paging of each paging time (e.g., PO) of a paging frame (e.g., PF), and the parameter nrofPDCCH-MonitoringOccasionsPerSSB-InPO.

[0152] For example, the parameter firstPDCCH-MonitoringOccasionOfPO may be signaled by SIB1 for paging in the initial base station-to-terminal communication (e.g., DL link) part bandwidth (e.g., bandwidth part; BWP), and may be signaled by the corresponding part bandwidth (e.g., BWP) setting for paging in a base station-to-terminal part bandwidth (e.g., DL BWP) other than the initial base station-to-terminal communication (e.g., DL link) part bandwidth (e.g., BWP).

[0153] For example, to reduce power consumption, a terminal may use Paging Early Indication (e.g., PEI) in the RRC_IDLE and RRC_INACTIVE states. If a Paging Early Indication (e.g., PEI) setting is provided in the system information, a terminal in the RRC_IDLE or RRC_INACTIVE state that supports Paging Early Indication (e.g., PEI) may monitor Paging Early Indication (e.g., PEI) using the Paging Early Indication (e.g., PEI) parameters within the system information. The terminal monitors one Paging Early Indication (e.g., PEI) per discontinuous reception (e.g., DRX) cycle. A Paging Early Indication occurrence (e.g., PEI-occasion; PEI-O) is a set of base station-to-terminal physical control channel (e.g., PDCCH) monitoring occurrences and may consist of multiple time slots (e.g., subframes or OFDM symbols) in which the Paging Early Indication (e.g., PEI) can be sent.

[0154] For example, in multi-beam operations, the terminal may assume that the same paging early indication (e.g., PEI) is repeated in all transmitted beams. The time position of the paging early indication time (e.g., PEI-O) relative to the terminal's paging time (e.g., PO) may be determined by a reference point and an offset, said reference point being the start of a reference frame determined by a frame-level offset from the start of the first paging frame (e.g., PF)(s) associated with said paging early indication time (e.g., PEI-O), provided by pei-FrameOffset in SIB1, and said offset being a symbol-level offset from said reference point to the start of the first base station-to-terminal physical control channel (e.g., PDCCH) monitoring time of said paging early indication time (e.g., PEI-O), provided by firstPDCCH-MonitoringOccasionOfPEI-O in SIB1.

[0155] For example, if a single paging early indication time (e.g., PEI-O) is associated with the paging times (e.g., PO) of two paging frames (e.g., PF), said two paging frames (e.g., PF) may be consecutive paging frames (e.g., PF) calculated by the parameters PF_offset, T, Ns, and N. For more details regarding paging early indications (e.g., PEI), refer to the technical literature.

[0156] According to one embodiment of the present disclosure, a paging discontinuous reception (e.g., DRX) may be defined in which a terminal that is RRC_IDLE or RRC_INACTIVE is required to monitor paging channels for only one paging time (e.g., PO) per discontinuous reception (e.g., DRX) cycle. For example, the following paging discontinuous reception (e.g., DRX) cycles may be set by a network:

[0157] i) For core network initiated paging (CN-initiated paging), a default cycle is broadcast with system information, and

[0158] ii) For CN-initial paging, terminal-specific cycles can be established via non-access stratum (NAS) signaling, and

[0159] iii) For radio access network (RAN)-initiated paging, terminal-specific cycles can be established via RRC signaling.

[0160] For example, a terminal may use the shortest of the applicable discontinuous reception (e.g., DRX) cycles. For example, a terminal that is RRC_IDLE may use the shorter of the first two discontinuous reception (e.g., DRX) cycles among the three discontinuous reception (e.g., DRX) cycles, and a terminal that is RRC_INACTIVE may use the shortest of the three discontinuous reception (e.g., DRX) cycles.

[0161] The operation sequence of the terminal and the signaling operation between the base station and the terminal are described below.

[0162] FIG. 9 illustrates a flowchart of the operation of a terminal performing one or more physical channels / signal transmissions to which the method proposed in the present disclosure may be applied, according to one embodiment of the present disclosure. The embodiment of FIG. 9 may be combined with various embodiments of the present disclosure.

[0163] Referring to FIG. 9(a), a flowchart is shown of a terminal performing terminal-to-base station data transmission. For example, the terminal may receive terminal-to-base station data / channel related information. Subsequently, the terminal may receive base station-to-terminal control information for terminal-to-base station data transmission, or receive information for terminal-to-base station channel transmission. Subsequently, for example, the terminal may transmit terminal-to-base station data / channel.

[0164] At this point, for example, the terminal can check whether all the instructed data / channels have been transmitted, and if not all have been transmitted, it can perform terminal-to-base station data / channel transmission (again and / or additionally). If all have been transmitted, the above procedure may be terminated.

[0165] Referring to FIG. 9(b), a flowchart is shown of a terminal performing base station-to-terminal data reception. For example, the terminal may receive information related to base station-to-terminal data / channel. Subsequently, the terminal may receive base station-to-terminal control information for base station-to-terminal data reception, or receive information for base station-to-terminal channel reception. Subsequently, for example, the terminal may receive base station-to-terminal data / channel.

[0166] At this time, for example, the terminal can check whether all the instructed data / channels have been received, and if not all have been received, it can perform base station-to-terminal data / channel reception (again and / or additionally).

[0167] For example, if all the instructed data / channels have been received, the terminal can determine whether feedback transmission is necessary, and if feedback transmission is not necessary, the procedure can be terminated.

[0168] For example, if feedback transmission is required, the terminal may transmit feedback (e.g., HARQ-ACK transmission). Afterward, the above procedure may be terminated.

[0169] FIG. 9 is for convenience of explanation only and is not intended to limit the scope of the present disclosure. For example, the terminal-to-base station data / channel transmission and / or the base station-to-terminal data / channel transmission may include NR FR1, FR2, or FR2-2 transmission.

[0170] FIG. 10 illustrates an operation sequence diagram of a base station performing one or more physical channels / signal transmissions to which the method proposed in the present disclosure may be applied, according to one embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure.

[0171] Referring to FIG. 10(a), a flowchart is shown of a base station performing terminal-to-base station data reception. For example, the base station may transmit terminal-to-base station data / channel related information. Subsequently, the base station may transmit base station-to-terminal control information for terminal-to-base station data transmission, or transmit information for terminal-to-base station channel transmission. Subsequently, for example, the base station may receive terminal-to-base station data / channel.

[0172] At this point, for example, the base station may check whether all the designated data / channels have been received, and if not all have been received, it may perform terminal-to-base station data / channel reception (again and / or additionally). If all have been received, the above procedure may be terminated.

[0173] Referring to FIG. 10(b), a flowchart is shown of a base station performing base station-to-terminal data transmission. For example, the base station may transmit base station-to-terminal data / channel related information. Subsequently, the base station may transmit base station-to-terminal control information for receiving base station-to-terminal data, or transmit information for receiving the base station-to-terminal channel. Subsequently, for example, the base station may transmit base station-to-terminal data / channel.

[0174] At this time, for example, the base station can check whether all the designated data / channels have been transmitted, and if not all have been transmitted, it can perform base station-to-terminal data / channel transmission (again and / or additionally).

[0175] For example, if all the instructed data / channel has been transmitted, the base station can determine whether feedback reception is required, and if feedback reception is not required, the procedure can be terminated.

[0176] For example, if feedback reception is required, the base station may receive feedback (e.g., HARQ-ACK transmission). Afterward, the above procedure may be terminated.

[0177] FIG. 10 is for convenience of explanation only and does not limit the scope of the present disclosure. For example, the terminal-to-base station data / channel transmission and / or the base station-to-terminal data / channel transmission may include NR FR1, FR2, or FR2-2 transmission.

[0178] FIG. 11 illustrates signaling between a base station and a terminal performing one or more physical channels / signal transmission and reception, to which the method proposed in the present disclosure may be applied, according to one embodiment of the present disclosure. The embodiment of FIG. 11 may be combined with various embodiments of the present disclosure.

[0179] Referring to FIG. 11 (a), the base station can transmit terminal-to-base station data / channel related information to the terminal. Subsequently, the base station can transmit base station-to-terminal control information for terminal-to-base station data transmission or information for terminal-to-base station channel transmission to the terminal. Subsequently, the terminal can transmit terminal-to-base station data / channel to the base station.

[0180] Referring to FIG. 11(b), the base station may transmit base station-to-terminal data / channel related information to the terminal. Subsequently, the base station may transmit base station-to-terminal control information for receiving base station-to-terminal data or information for receiving the base station-to-terminal channel to the terminal. Subsequently, the base station may transmit the base station-to-terminal data / channel to the terminal. Subsequently, (if configured to perform a feedback operation,) the terminal may transmit feedback (e.g., HARQ-ACK feedback) to the base station.

[0181] FIG. 11 is for convenience of explanation only and is not intended to limit the scope of the present disclosure. For example, the terminal-to-base station data / channel transmission and / or the base station-to-terminal data / channel transmission may include NR FR1, FR2, or FR2-2 transmission.

[0182] For example, in the present disclosure, transmitting or receiving a low-power wake-up signal time (e.g., LO) may mean transmitting or receiving a low-power wake-up signal (e.g., LP-WUS) during the low-power wake-up signal time (e.g., LO). For example, in the present disclosure, transmitting or receiving a low-power wake-up signal monitoring time (e.g., LMO) may mean transmitting or receiving a low-power wake-up signal (e.g., LP-WUS) during the low-power wake-up signal monitoring time (e.g., LMO). For example, in the present disclosure, transmitting or receiving a paging time (e.g., PO) may mean transmitting or receiving a paging message during the paging time (e.g., PO). For example, in the present disclosure, performing paging may mean receiving a paging message during the paging time (e.g., PO).

[0183] For example, in the present disclosure, code points can be mutually substituted / replaced with code point values.

[0184] The symbols / abbreviations / terms used in this disclosure are as follows.

[0185] ACS (Adjacent Channel Selectivity): Adjacent Channel Selectivity

[0186] ADC (Analog to Digital Converter): Analog-to-Digital Converter

[0187] ASCS (Adjacent Subcarrier Selectivity): Adjacent subcarrier selectivity

[0188] ASK (Amplitude Shift Keying): Amplitude Shift Keying

[0189] BB (Base Band): Fundamental band

[0190] BLER (Block Error Rate): Block Error Rate

[0191] BPF (Band Pass Filter): Base Pass Filter

[0192] BWP (Bandwidth part): Bandwidth part

[0193] CAP (Channel Access Procedure): Channel Access Procedure

[0194] CFO (Center frequency offset): Center frequency offset

[0195] CORESET(Control resource set): Control resource set

[0196] CRC (Cyclic redundancy check): Cyclic redundancy check

[0197] CP-OFDMA (Cyclic Prefix-Orthogonal Frequency-Division Multiple Access): Cyclic Prefix-Orthogonal Frequency-Division Multiple Access

[0198] CSI (Channel state information): Channel state information

[0199] DCI (Downlink Control Information): Base station-to-terminal control information

[0200] DCP(DCI with CRC scrambled by PS-RNTI): Base station-to-terminal control information scrambled by PS-RNTI

[0201] DRX (Discontinuous Reception): Discontinuous reception

[0202] DFT-S-OFDMA (Discrete Fourier Transform-Spread-Orthogonal Frequency-Division Multiple Access): Discrete Fourier Transform-Spread-Orthogonal Frequency-Division Multiple Access

[0203] eDRX (Extended DRX): Extended Discontinuous Receive

[0204] EPRE (Energy Per Resource Element): Energy per resource element

[0205] FAR (False Alarm Rate): False alarm rate

[0206] FCS (Frame Check Sequence): Frame Check Sequence

[0207] FSK (Frequency Shift Keying): Frequency Shift Keying

[0208] FLL (Frequency Locked Loop): Frequency Locked Loop

[0209] FFT (Fast Fourier Transform): Fast Fourier Transform

[0210] FR1(Frequency range 1): Frequency range 1

[0211] FR2 (Frequency range 2): Frequency range 2

[0212] ICS (In-channel Selectivity): In-channel selectivity

[0213] IF(Intermediate Frequency): Intermediate Frequency

[0214] LP-WUS (Low Power-Wake Up Signal): Low Power Wake Up Signal

[0215] LP-WUR (Low Power-Wake Up Receiver): Low-power weather receiver

[0216] LP-SS (Low Power-Synchronization Signal): Low-power synchronization signal

[0217] LNA (Low Noise Amplifier): Low-noise amplifier

[0218] LPF (Low Pass Filter): Low-pass filter

[0219] LR(LP-WUR): Low-power weather receiver

[0220] MDR (Miss Detection Rate): Miss Detection Rate

[0221] MC-ASK (Multiple Carrier-Amplitude Shift Keying): Multiple Carrier-Amplitude Shift Keying

[0222] MC-FSK (Multiple Carrier-Frequency Shift Keying): Multiple Carrier-Frequency Shift Keying

[0223] MR (Main Radio): Main Radio

[0224] NF (Noise Figure): Noise shape

[0225] OOK(On-Off keying): On / Off keying

[0226] OFDM (Orthogonal Frequency Division Multiplexing): Orthogonal Frequency Division Multiplexing

[0227] PDCCH (Physical Downlink Control Channel): Base station-to-terminal physical control channel

[0228] PUCCH (Physical Uplink Control Channel): Terminal-to-Base Station Physical Control Channel

[0229] PUSCH (Physical Uplink Shared Channel): Terminal-to-Base Station Physical Shared Channel

[0230] PDSCH (Physical Downlink Shared Channel): Base station-to-terminal physical shared channel

[0231] PRACH (Physical Random-Access Channel): Physical Random Access Channel

[0232] PEI (Paging Early Indication): Early Paging Indication

[0233] PO (Paging Occasion): Paging Occasion

[0234] PTW (Paging Time Window): Paging Time Window

[0235] PLL (Phase Locked Loop): Phase Locked Loop

[0236] PAPR (Peak to Average Power Ratio): Peak to Average Power Ratio

[0237] RRC (Radio Resource Control): Radio resource control

[0238] RRM (Radio Resource Management): Radio Resource Management

[0239] RLM (Radio Link Monitoring): Wireless connection monitoring

[0240] RS (Reference Signal): Reference signal

[0241] RSRP (Reference Signal Received Power): Reference signal received power

[0242] RSRQ (Reference Signal Received Quality): Reference signal reception quality

[0243] RTC (Real Time Clock): Real time clock

[0244] RF (Radio Frequency): Radio Frequency

[0245] SCS (Sub-carrier spacing): Subcarrier spacing

[0246] SSB (Synchronization Signal Block): Synchronization signal block

[0247] SSSG (Search Space Set Group): Search Space Set Group

[0248] SINR (Signal to Interference plus Noise Ratio): Signal-to-Interference Plus Noise Ratio

[0249] SNR (Signal to Noise Ratio): Signal-to-Noise Ratio

[0250] SC (Subcarrier): Subcarrier

[0251] TBS (Transport Block Size): Transport block size

[0252] TDRA (Time Domain Resource Allocation): Time Domain Resource Allocation

[0253] Ucell (Unlicensed cell): Unlicensed cell

[0254] UE (User Equipment): Terminal

[0255] XR (Extended reality): Extended reality

[0256] TAG (Timing advance group): Timing advance group

[0257] AmIoT (Ambient Internet of Things): Ambient Internet of Things

[0258] CW (Carrier Wave): Carrier wave

[0259] BSC (Backscattering): Backscattering

[0260] BSS (Backscattered signal): Backscattered signal

[0261] SIC (Self-Interference Cancellation): Self-interference cancellation

[0262] RFID (Radio Frequency Identifier): Radio Frequency Identifier

[0263] IN(Intermediate Node): Intermediate Node

[0264] SLIV (Starting and Length Indicator Value): A starting and length indicator value. As an indicator value for the starting symbol index and the number of symbols within a slot of a base station-to-terminal physical shared channel (e.g., PDSCH) and / or a terminal-to-base station physical shared channel (e.g., PUSCH), it can be set as a component of an entry constituting a time domain resource allocation (e.g., TDRA) field within a base station-to-terminal physical control channel (e.g., PDCCH) that schedules the said base station-to-terminal physical shared channel (e.g., PDSCH) and / or terminal-to-base station physical shared channel (e.g., PUSCH).

[0265] BWP (BandWidth Part): Part of the bandwidth. It may consist of consecutive resource blocks (RBs) on the frequency axis and may correspond to a single numerology (e.g., subcarrier interval, circular prefix (e.g., CP) length, slot / mini-slot duration). Additionally, multiple part bandwidths (e.g., BWPs) may be configured on a single carrier (the number of part bandwidths (e.g., BWPs) per carrier may also be limited), but the number of active part bandwidths (e.g., BWPs) may be limited to a portion (e.g., 1) per carrier.

[0266] CORESET(COntrol REsourse SET): A set of control resources. It refers to a time-frequency resource range in which a base station-to-terminal physical control channel (e.g., PDCCH) can be transmitted, and the number of control resource sets (e.g., CORESET) per partial carrier (e.g., BWP) may be limited.

[0267] REG(Resource element group): Resource element group

[0268] SFI (Slot Format Indicator): A slot format indicator. An indicator that indicates the symbol-level base station-to-terminal / terminal-to-base station direction within a specific slot(s), which can be transmitted via a common base station-to-terminal physical control channel (e.g., PDCCH) within the group.

[0269] COT (Channel occupancy time): Channel occupancy time

[0270] SPS (Semi-persistent scheduling): Semi-permanent scheduling

[0271] QCL (Quasi-Co-Location): Quasi-co-location. A quasi-co-location (e.g., QCL) relationship between two reference signals implies that quasi-co-location (e.g., QCL) parameters obtained from one reference signal, such as Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters, can be applied to another reference signal (or its antenna port(s)). For example, in an NR system, four quasi-co-location (e.g., QCL) types are defined as follows: 'typeA': {Doppler shift, Doppler spread, average delay, delay spread}, 'typeB': {Doppler shift, Doppler spread}, 'typeC': {Doppler shift, average delay}, 'typeD': {spatial Rx parameters}. For example, for a specific base station-to-terminal reference signal antenna port(s), a first base station-to-terminal reference signal (e.g., DL RS) may be set as a reference to a similar identical location (e.g., QCL) type X (X=A, B, C, or D), and additionally, a second base station-to-terminal reference signal (e.g., DL RS) may be set as a reference to a similar identical location (e.g., QCL) type Y (Y=A, B, C, or D, but X≠Y).

[0272] TCI (Transmission Configuration Indication): Transmission configuration indicator. A TCI state includes a pseudo-identical position (e.g., QCL) relationship between one or more base station-to-terminal reference signals (e.g., DL RS) with the decoding reference signal (e.g., DM-RS) port of a base station-to-terminal physical shared channel (e.g., PDSCH), the decoding reference signal (e.g., DM-RS) port of a base station-to-terminal physical control channel (e.g., PDCCH), or the channel state information reference signal (e.g., CSI-RS) port(s) of a channel state information reference signal (e.g., CSI-RS) resource. For transmission setting indicators among the fields in base station-to-terminal control information (e.g., DCI) that schedule a base station-to-terminal physical shared channel (e.g., PDSCH), the transmission setting indicator (e.g., TCI) state index corresponding to each code point constituting the field is activated by MAC CE, and the transmission setting indicator (e.g., TCI) state setting for each transmission setting indicator (e.g., TCI) state index can be set through RRC signaling. In an NR system, the transmission setting indicator (e.g., TCI) state is set between the base station-to-terminal reference signal (e.g., DL RS), but setting between the base station-to-terminal reference signal (e.g., DL RS) and the terminal-to-base station reference signal (e.g., UL RS), or between the terminal-to-base station reference signal (e.g., UL RS) and the terminal-to-base station reference signal (e.g., UL RS) may be allowed in the future. For example, examples of terminal-to-base station reference signals (e.g., UL RS) may include sounding reference signals (e.g., SRS), terminal-to-base station physical shared channel (e.g., PUSCH) decoding reference signals (e.g., DM-RS), terminal-to-base station physical control channel (e.g., PUCCH) decoding reference signals (e.g., DM-RS).

[0273] SRI (SRS resource indicator): A sounding reference signal (e.g., SRS) resource indicator. Among the fields in base station-to-terminal control information (e.g., DCI) that schedules a terminal-to-base station physical shared channel (e.g., PUSCH), one of the sounding reference signal (e.g., SRS) resource index values ​​set in the sounding reference signal (e.g., SRS) resource indicator may be indicated. When transmitting a terminal-to-base station physical shared channel (e.g., PUSCH), the terminal may transmit the terminal-to-base station physical shared channel (e.g., PUSCH) by utilizing the same spatial domain transmission filter used for reference signal transmission and reception associated with the corresponding sounding reference signal (e.g., SRS) resource. At this time, for each sounding reference signal (e.g., SRS) resource, the reference signal (e.g., RS) is set by RRC signaling through the SRS-SpatialRelationInfo parameter, and a synchronization signal / physical broadcasting channel (e.g., SS / PBCH) block, channel status reference signal (e.g., CSI-RS), or sounding reference signal (e.g., SRS) can be set as the reference signal (e.g., RS).

[0274] LO(LP-WUS occasion): Low-power weather signal opportunity. For example, it may consist of one or more LP-WUS monitoring opportunities.

[0275] LMO: LP-WUS Monitoring Opportunity

[0276] In the present disclosure, when a low power wake-up signal (e.g., LP-WUS; Low power wake-up signal) and a low power synchronization signal (e.g., LP-SS; Low power synchronization signal) are transmitted, a plurality of monitoring occasions (e.g., MO; monitoring occasion) are configured within a low power wake-up signal occasion (e.g., LO; LP-WUS occasion) / a low power synchronization signal occasion (e.g., LP-SS occasion), and thereby a method for securing reception performance is described.

[0277] For example, improving the reception performance of low-power wake-up signals (e.g., LP-WUS) and low-power synchronization signals (e.g., LP-SS) and efficient mapping with the synchronization signal block (e.g., SSB) beam can be important factors in reducing power consumption of the system. In particular, for low-power wake-up signals (e.g., LP-WUS), reliable transmission is required while minimizing false alarms, and for low-power synchronization signals (e.g., LP-SS), effective beam mapping with the synchronization signal block (e.g., SSB) may be essential.

[0278] However, during the time when the synchronization signal block (e.g., SSB) is transmitted beam by beam, it may be difficult or impossible to transmit the same number of beams to the low-power synchronization signal (e.g., LP-SS), and depending on the number of beams and the on / off keying method (e.g., OOK), if the number of beams used in the low-power wake-up signal (e.g., LP-WUS) / low-power synchronization signal (e.g., LP-SS) is adjusted for this purpose, the number of beams between the low-power wake-up signal (e.g., LP-WUS) / low-power synchronization signal (e.g., LP-SS) and the synchronization signal block (e.g., SSB) may differ, and problems may occur in terminal operation due to beam mismatch between the MR (main radio) and LR (low power radio).

[0279] Accordingly, the present disclosure describes a method for repeatedly transmitting a low-power wake signal (e.g., LP-WUS) / low-power synchronization signal (e.g., LP-SS) and improving reception performance and coverage through efficient beam mapping with a synchronization signal block (e.g., SSB), thereby reducing the overall power consumption of the system.

[0280] According to various embodiments of the present disclosure, an efficient mapping method is described for the repeated transmission of a low-power wake signal (e.g., LP-WUS) / low-power synchronization signal (e.g., LP-SS) and a synchronization signal block (e.g., SSB) beam. In particular, a method is presented for determining the number of low-power synchronization signal (e.g., LP-SS) beams considering the available low-power synchronization signal (e.g., LP-SS) transmission capacity, a method for sweeping low-power synchronization signal (e.g., LP-SS) beams considering the synchronization signal block (e.g., SSB) sweeping time, and an efficient reception method through the selection of the best synchronization signal block (e.g., SSB) beam upon reception of a low-power wake signal (e.g., LP-WUS).

[0281] This resolves the beam mapping mismatch problem between the low-power wake signal (e.g., LP-WUS) / low-power synchronization signal (e.g., LP-SS) and the synchronization signal block (e.g., SSB), and allows for system flexibility by selectively applying whether to perform measurement offloading.

[0282] In the present disclosure, examples are provided based on an NR system to explain the principles of initiation, but the proposed methods are not specifically limited to the transmission and reception forms of NR unless otherwise stated. Furthermore, in the present disclosure, examples are provided based on the characteristics and structure of a discontinuous reception (e.g., DRX) terminal to explain the principles of initiation, but the proposed methods are not specifically limited to the support of a discontinuous reception (e.g., DRX) terminal unless otherwise stated. Therefore, it is obvious that the methods proposed in the present disclosure can be applied to all wireless communication transmission and reception structures and services as long as the principles of initiation are not compromised, even without further explanation.

[0283] In the following description, the distinction between each method or option is intended to clarify the explanation and is not to be interpreted restrictively as meaning that each must necessarily be implemented as an independent disclosure. For example, while the methods / options described below may each be implemented individually, they may also be implemented in a combined form in which at least some parts are combined, provided that they do not conflict with one another.

[0284] According to various embodiments of the present disclosure, the timing of reception of a low-power wake-up signal (e.g., LP-WUS) may be determined based on system information transmitted by a base station or separately described in each of the proposed methods below. For example, if the low-power wake-up signal (e.g., LP-WUS) can be received as 1-bit information in a single unit (e.g., 1 slot or 1 symbol) through on / off keying, the offset value and period on the system frame may simply be set. If, for reliability, decoded information is received through multiple on / off keyings or 2 or more bit information is received, the time interval during which the terminal receives the low-power wake-up signal (e.g., LP-WUS) and the terminal ID for the low-power wake-up signal receiver (e.g., LP-WUR) for verification after receiving the low-power wake-up signal (e.g., LP-WUS) may be determined based on this, similar to a paging early indication (e.g., PEI). For example, in this case, the terminal ID used for conventional paging reception may be reused.

[0285] According to one embodiment of the present disclosure, a method may be considered in which a terminal derives the reception location of a low-power wake-up signal (e.g., LP-WUS) through a terminal ID given to the terminal for receiving a low-power wake-up signal (e.g., LP-WUS). For example, the low-power wake-up signal (e.g., LP-WUS) is repeated at short intervals, and the base station may provide the terminal with the number of low-power wake-up signal (e.g., LP-WUS) subgroup parameters. This refers to the number of low-power wake-up signal monitoring periods (e.g., LP-WUS MO) required for one terminal subgroup, in other words, the low-power wake-up signal (e.g., LP-WUS) for one terminal subgroup may be repeated for each corresponding low-power wake-up signal monitoring period (e.g., LP-WUS MO).

[0286] For example, a terminal can distinguish the low-power wake-up signal monitoring time (e.g., LP-WUS MO) to be monitored among the monitoring times (e.g., MO) equal to the number of low-power wake-up signal (e.g., LP-WUS) subgroups through a terminal ID given to it. In addition, for example, if K (K>2) bits of information are received through the monitoring of the low-power wake-up signal (e.g., LP-WUS), the reception of the low-power wake-up signal (e.g., LP-WUS) can also be distinguished through the terminal ID.

[0287] In various embodiments of the present disclosure, a low-power weather signal occasion (e.g., LP-WUS occasion; LO) may include one or more low-power weather signal (e.g., LP-WUS) monitoring occasions (e.g., monitoring occasion; MO). In other words, one low-power weather signal monitoring occasion (e.g., LP-WUS MO) may be replaced by one low-power weather signal occasion (e.g., LO), or a group of low-power weather signal monitoring occasions (e.g., LP-WUS MO) consisting of one or more low-power weather signal monitoring occasions (e.g., LP-WUS MO) may be replaced by a low-power weather signal occasion (e.g., LO). For example, this may be useful for improving reception performance by associating each low-power weather signal monitoring period (e.g., LP-WUS MO) within a low-power weather signal period (e.g., LO) with a beam or reference signal given or predefined from a base station, and ensuring that the same information is always transmitted in the low-power weather signal monitoring period (e.g., LP-WUS MO) within the low-power weather signal period (e.g., LO), thereby allowing the terminal to select and receive the best low-power weather signal monitoring period (e.g., LP-WUS MO) from the reference signal or by combining the signals received in each low-power weather signal monitoring period (e.g., LP-WUS MO).

[0288] For example, the number of low-power wake signal monitoring periods (e.g., LP-WUS MO) within a low-power wake signal period (e.g., LO) may be directly set through messages such as SIB from the base station, or derived from the number of transmissions per period of a reference signal, etc., that may be associated with each low-power wake signal monitoring period (e.g., LMO) (e.g., the number of transmissions of a reference signal per period of a low-power wake signal opportunity (e.g., LO). For example, the number of transmissions of a reference signal between adjacent low-power wake signal opportunities (e.g., LO).

[0289] Alternatively, for example, if the transmission of a reference signal is configured to occur K times between adjacent low-power weather signal opportunities (e.g., LO), the terminal can expect K transmissions of low-power weather signal monitoring opportunities (e.g., LMO) within adjacent low-power weather signal opportunities (e.g., LO).

[0290] Alternatively, for example, without an explicit association, the terminal may simply assume that each low-power wake-up signal monitoring period (e.g., LP-WUS MO) is a separate transmission. In the series of operations described above, the terminal may assume that the same information is provided through the low-power wake-up signal monitoring period (e.g., LP-WUS MO) within the low-power wake-up signal period (e.g., LO). For example, additionally, the following may be considered in the low-power wake-up signal period (e.g., LO).

[0291] For example, during a given low-power wake signal period (e.g., LO), the terminal may perform all monitoring during the monitoring period (e.g., MO) within the low-power wake signal period (e.g., LO), or may perform monitoring only during a specific monitoring period (e.g., MO). For example, in the case of a low-power synchronization signal (e.g., LP-SS), reception may be attempted only for some low-power synchronization signals (e.g., LP-SS).

[0292] For example, the number of low-power wake-up signal monitoring periods (e.g., LP-WUS MO) within a low-power wake-up signal period (e.g., LO) may differ from the number of associated beams or reference signals. This may be due to consideration of the capacity of the low-power wake-up signal monitoring periods (e.g., LP-WUS MO). In such cases, the terminal may consider the following.

[0293] (1) When the number of low-power wake signal monitoring times (e.g., LP-WUS MO) within a low-power wake signal time (e.g., LO) is greater than the number of associated beams or reference signals Y, the nth low-power wake signal monitoring time (e.g., LP-WUS MO) may be assumed to be associated with the ((n-1) mod Y + 1)th beam or transmitted reference signal.

[0294] (2) When the number of low-power wake signal monitoring periods (e.g., LP-WUS MO) X within a low-power wake signal period (e.g., LO) is less than the number of associated beams or reference signals Y,

[0295] 1) The first low-power weather signal monitoring time (e.g., LP-WUS MO) may be associated with the 'number mod Y' of the SFN containing the corresponding low-power weather signal monitoring time (e.g., LP-WUS MO). Additionally, the nth low-power weather signal monitoring time (e.g., LP-WUS MO) may be associated with the ((m+n-1) mod Y + 1)th beam or reference signal if the first low-power weather signal monitoring time (e.g., LP-WUS MO) is associated with the mth beam or reference signal.

[0296] 2) Alternatively, for example, the nth weather signal monitoring time (e.g., LP-WUS MO) may be associated with the set nth beam or reference signal. For example, for this purpose, an ordered index may be set on the beam or reference signal.

[0297] 3) Alternatively, for example, the first weather signal monitoring time (e.g., LP-WUS MO) may be associated with the beam or reference signal closest to the start time of the current low-power weather signal time (e.g., LO). Additionally, the nth weather signal monitoring time (e.g., LP-WUS MO) may be associated with a previously transmitted beam or reference signal of the beam or reference signal associated with the n-1th low-power weather signal time (e.g., LO).

[0298] Alternatively, for example, the first low-power signal monitoring occasion (e.g., LMO; LP-WUS monitoring occasion) may be associated with the beam or reference signal closest to the start time of the current low-power signal occasion (e.g., LO). Additionally, the nth low-power signal monitoring occasion (e.g., LMO) may be associated with a previously transmitted beam or reference signal of the beam or reference signal associated with the n-1th low-power signal occasion (e.g., LO).

[0299] Alternatively, for example, the first low-power signal monitoring opportunity (e.g., LMO) may be associated with the nearest Xth beam or reference signal among the beams or reference signals transmitted prior to the start time of the current low-power signal opportunity (e.g., LO).

[0300] For example, even in the case of a low-power synchronization signal (e.g., LP-SS), the number of transmissions of the low-power synchronization signal (e.g., LP-SS) may differ from the number of beams of the associated synchronization signal block (e.g., SSB) or the number of synchronization signal blocks (e.g., SSB). In such cases, the terminal may consider the following cases.

[0301] For example, it can be assumed that the nth monitoring opportunity (e.g., MO) of a low-power synchronization signal (e.g., LP-SS) is associated with the ((n-1) mod Y + 1)th synchronization signal block (e.g., SSB) beam or reference signal, where Y may be the number of synchronization signal block (e.g., SSB) beams or reference signals.

[0302] For example, if the number of low-power synchronization signals (e.g., LP-SS) is less than the number of synchronization signal block (e.g., SSB) beams or reference signals, the first low-power synchronization signal (e.g., LP-SS) may be associated with a synchronization signal block (e.g., SSB) beam or reference signal corresponding to the remainder of dividing the SFN number containing the low-power synchronization signal (e.g., LP-SS) by Y.

[0303] Subsequently, the nth low-power synchronization signal (e.g., LP-SS) may be associated with the ((m+n-1) mod Y + 1)th synchronization signal block (e.g., SSB) beam or reference signal if it is associated with the mth synchronization signal block (e.g., SSB) beam or reference signal in the first low-power synchronization signal (e.g., LP-SS).

[0304] Alternatively, for example, the nth low-power synchronization signal (e.g., LP-SS) may be directly associated with a preset nth synchronization signal block (e.g., SSB) beam or reference signal. To this end, an ordered index may be set on the synchronization signal block (e.g., SSB) beam or reference signal.

[0305] Alternatively, for example, the first low-power synchronization signal (e.g., LP-SS) may be associated with the synchronization signal block (e.g., SSB) beam or reference signal closest to the start time of the current low-power synchronization signal (e.g., LP-SS). Subsequently, the nth monitoring opportunity (e.g., MO) may be associated with the previously transmitted synchronization signal block (e.g., SSB) beam or reference signal of the synchronization signal block (e.g., SSB) beam or reference signal associated with the n-1th monitoring opportunity (e.g., MO).

[0306] Alternatively, for example, the Xth low-power synchronization signal (e.g., LP-SS) may be associated with the Xth synchronization signal block (e.g., SSB) beam or reference signal of the nearest synchronization signal block (e.g., SSB) burst among the synchronization signal block (e.g., SSB) bursts prior to the start time of the current low-power synchronization signal (e.g., LP-SS).

[0307] For example, in the present disclosure, ID can be interchanged with index.

[0308] For example, in the present disclosure, receiving a low-power wake-up signal opportunity (e.g., LO), a low-power wake-up signal monitoring opportunity (e.g., LMO), and / or a paging opportunity (e.g., PO) may be interchangeable with receiving a low-power wake-up signal (e.g., LP-WUS), and / or a paging message in a low-power wake-up signal opportunity (e.g., LO), a low-power wake-up signal monitoring opportunity (e.g., LMO), and / or a paging opportunity (e.g., PO).

[0309] [Method #1]

[0310] Mapping of synchronization signal blocks (e.g., SSB) and low-power synchronization signals (e.g., LP-SS)

[0311] According to one embodiment of the present disclosure, a low-power synchronization signal (e.g., LP-SS), which is a separate reference signal that can be utilized by a low-power wake-up signal (e.g., LP-WUS) receiver for receiving a low-power wake-up signal (e.g., LP-WUS), may be introduced. For example, through the low-power synchronization signal (e.g., LP-SS), the low-power wake-up signal (e.g., LP-WUS) receiver may obtain basic synchronization for receiving an on-off keying (e.g., OOK) signal, and furthermore, accurate channel state measurement may be possible.

[0312] In transmitting a low-power synchronization signal (e.g., LP-SS) transmittable via multiple beams, the beam used for transmitting each low-power synchronization signal (e.g., LP-SS) can be designed to be associated with at least one synchronization signal block (e.g., SSB) beam. For example, to simplify terminal operation, the following methods may be considered:

[0313] For example, the starting point of a low-power synchronization signal (e.g., LP-SS) can be determined in conjunction with the starting point of a burst period of a synchronization signal block (e.g., SSB). For example, the low-power synchronization signal (e.g., LP-SS) can be transmitted at a location a certain time away from the starting point of the burst period of a synchronization signal block (e.g., SSB).

[0314] For example, the transmission of the nth low-power synchronization signal (e.g., LP-SS) within a period can be directly associated with a preset nth synchronization signal block (e.g., SSB) beam or reference signal. To this end, an ordered index can be set on the synchronization signal block (e.g., SSB) beam or reference signal.

[0315] Alternatively, for example, the Xth low-power synchronization signal (e.g., LP-SS) may be associated with the synchronization signal block (e.g., SSB) burst associated with the said low-power synchronization signal (e.g., LP-SS), or the nearest synchronization signal block (e.g., SSB) burst among the synchronization signal block (e.g., SSB) bursts prior to the start time of the current low-power synchronization signal (e.g., LP-SS), or the Xth synchronization signal block (e.g., SSB) beam or reference signal.

[0316] However, the transmission of a single low-power synchronization signal (e.g., LP-SS) may require a longer transmission time compared to a synchronization signal block (e.g., SSB), and this time may be even longer depending on the transmission type of the low-power wake signal (e.g., LP-WUS) (e.g., modulation order of on / off keying). In such cases, it may not be possible to transmit the low-power synchronization signal (e.g., LP-SS) in all beam directions within a single synchronization signal block (e.g., SSB) cycle.

[0317] For such cases, according to one embodiment of the present disclosure, a method may be considered in which a low-power synchronization signal (e.g., LP-SS) uses a longer period than a synchronization signal block (e.g., SSB), and each low-power synchronization signal (e.g., LP-SS) is transmitted over the entire synchronization signal block (e.g., SSB) beam during one period. For example, the following methods for transmitting the low-power synchronization signal (e.g., LP-SS) may be considered.

[0318] According to one embodiment of the present disclosure, a method for setting the period of a low-power synchronization signal (e.g., LP-SS) based on a burst interval of a synchronization signal block (e.g., SSB) may be provided.

[0319] For example, the period of a low-power synchronization signal (e.g., LP-SS) can be set to an integer multiple of the burst interval of a synchronization signal block (e.g., SSB).

[0320] For example, if the burst interval of the synchronization signal block (e.g., SSB) is 20ms, the low-power synchronization signal (e.g., LP-SS) can be set to a period of 40ms, 60ms, etc.

[0321] For example, this allows sufficient time to sequentially transmit low-power synchronization signals (e.g., LP-SS) in all beam directions for all synchronization signal blocks (e.g., SSB) beams.

[0322] In this case, according to one embodiment of the present disclosure, a beam mapping method between a synchronization signal block (e.g., SSB) and a low-power synchronization signal (e.g., LP-SS) may be as follows.

[0323] For example, if the period of a low-power synchronization signal (e.g., LP-SS) is N times the burst interval of a synchronization signal block (e.g., SSB), the low-power synchronization signal (e.g., LP-SS) can be transmitted for beams corresponding to 1 / N of the total synchronization signal block (e.g., SSB) beams within each synchronization signal block (e.g., SSB) burst interval (or using beams).

[0324] For example, if the period of a low-power synchronization signal (e.g., LP-SS) is twice the burst period of a synchronization signal block (e.g., SSB) and there are a total of 8 synchronization signal block (e.g., SSB) beams, i) in the transmission of a low-power synchronization signal (e.g., LP-SS) corresponding to the first synchronization signal block (e.g., SSB) burst period, a low-power synchronization signal (e.g., LP-SS) corresponding to the 1st to 4th synchronization signal block (e.g., SSB) beams is transmitted, and ii) in the transmission of a low-power synchronization signal (e.g., LP-SS) corresponding to the second synchronization signal block (e.g., SSB) burst period, a low-power synchronization signal (e.g., LP-SS) corresponding to the 5th to 8th synchronization signal block (e.g., SSB) beams can be transmitted.

[0325] Alternatively, for example, in the transmission of a low-power synchronization signal (e.g., LP-SS) corresponding to the burst period of the first synchronization signal block (e.g., SSB), a low-power synchronization signal (e.g., LP-SS) corresponding to an even-numbered synchronization signal block (e.g., SSB) beam may be transmitted, and in the transmission of a low-power synchronization signal (e.g., LP-SS) corresponding to the burst period of the second synchronization signal block (e.g., SSB), a low-power synchronization signal (e.g., LP-SS) corresponding to an odd-numbered synchronization signal block (e.g., SSB) beam may be transmitted.

[0326] Here, for example, the burst period of the first synchronization signal block (e.g., SSB) may mean the 2*n+1th synchronization signal block (e.g., SSB) burst period (from SFN=0), and the burst period of the second synchronization signal block (e.g., SSB) may mean the 2*n+2th synchronization signal block (e.g., SSB) burst period. For example, n may be 0, 1, 2, ....

[0327] Meanwhile, there may be a constraint that the period of the low-power synchronization signal (e.g., LP-SS) cannot be extended indefinitely in order to obtain synchronization through the low-power synchronization signal (e.g., LP-SS). Therefore, considering the limited period of the low-power synchronization signal (e.g., LP-SS), a method of transmitting only the low-power synchronization signal (e.g., LP-SS) corresponding to some synchronization signal block (e.g., SSB) beams in the low-power synchronization signal (e.g., LP-SS) may be considered.

[0328] According to one embodiment of the present disclosure, by grouping synchronization signal block (e.g., SSB) beams that have similar quasi-co-located (QCL) relationships or spatial characteristics (synchronization signal block (e.g., SSB) beam grouping-based low-power synchronization signal (e.g., LP-SS) mapping), a low-power synchronization signal (e.g., LP-SS) can be transmitted only for the representative beam of each group (or only using the representative beam).

[0329] For example, beams of adjacent directional synchronization signal blocks (e.g., SSB) can be grouped together, and a low-power synchronization signal (e.g., LP-SS) can be transmitted only for the strongest beam within that group (or only using the strongest beam). Such a group can be established through upper-layer signaling of a base station, or determined by a terminal grouping beams of adjacent synchronization signal blocks (e.g., SSB) according to a predefined rule based on temporal location or synchronization signal block (e.g., SSB) index.

[0330] For example, if the number of low-power synchronization signals (e.g., LP-SS) that can be transmitted within a low-power synchronization signal (e.g., LP-SS) cycle is 4 and there are 8 synchronization signal block (e.g., SSB) beams, then every 2 consecutive indices of synchronization signal blocks (e.g., SSB) are determined as a group, and the first synchronization signal block (e.g., SSB) within the group can be determined as the representative synchronization signal block (e.g., SSB) beam.

[0331] Alternatively, for example, if there are a total of 16 synchronization signal block (e.g., SSB) beams and 4 low-power synchronization signals (e.g., LP-SS) can be transmitted, each consecutive set of 4 synchronization signal blocks (e.g., SSB) of indices can be set as a group (e.g., {0,1,2,3}, {4,5,6,7}, {8,9,10,11}, {12,13,14,15}), and the beam with the lowest synchronization signal block (e.g., SSB) index in each group can be selected as the representative beam (synchronization signal block (e.g., SSB) beams 0, 4, 8, and 12).

[0332] Alternatively, for example, a base station may group synchronization signal block (e.g., SSB) beams that share the same QCL characteristics, and within each QCL group, a specific beam set by the base station (or the beam with the smallest index within the group) may be selected as the representative beam.

[0333] According to one embodiment of the present disclosure, a base station may set a synchronization signal block (e.g., SSB) beam to transmit a low-power synchronization signal (e.g., LP-SS) depending on network conditions or terminal distribution (explicit selection-based mapping of the base station).

[0334] For example, the synchronization signal block (e.g., SSB) beam to be transmitted can be set through the base station's upper layer signaling. For example, the base station may separately inform (the terminal) of the index of the synchronization signal block (e.g., SSB) that uses the beam associated with the beam used for low-power synchronization signal (e.g., LP-SS) transmission among the indices of the synchronization signal blocks (e.g., SSB) actually transmitted.

[0335] According to one embodiment of the present disclosure, (low-power synchronization signal (e.g., LP-SS) beam cycling method) only some of the beams of the entire synchronization signal block (e.g., SSB) are selected, and based on this, a low-power synchronization signal (e.g., LP-SS) is transmitted, and the selected beams can be cycled over time.

[0336] For example, by transmitting a low-power synchronization signal (e.g., LP-SS) to a different set of synchronization signal block (e.g., SSB) beams for each low-power synchronization signal (e.g., LP-SS) cycle, an opportunity to transmit a low-power synchronization signal (e.g., LP-SS) to all synchronization signal block (e.g., SSB) beams can be provided over the long term. For example, as a result, a low-power synchronization signal (e.g., LP-SS) transmission-related cycle can be determined that is larger than the synchronization signal block (e.g., SSB) burst cycle, which provides an opportunity to transmit a low-power synchronization signal (e.g., LP-SS) to all synchronization signal block (e.g., SSB) beams.

[0337] More specifically, for example, assuming that the synchronization signal block (e.g., SSB) index is {0, ..., 7} and the low-power synchronization signal (e.g., LP-SS) also transmits 8 beams, if the low-power synchronization signal (e.g., LP-SS) period = 40ms and the synchronization signal block (e.g., SSB) burst period = 20ms, then in the first 40ms period, the low-power synchronization signal (e.g., LP-SS) associated with each synchronization signal block (e.g., SSB) index {0, 2, 4, 6} can be transmitted, and in the second 40ms period, the low-power synchronization signal (e.g., LP-SS) associated with each synchronization signal block (e.g., SSB) index {1, 3, 5, 7} can be transmitted. In this case, for example, the 80ms period during which the low-power synchronization signal (e.g., LP-SS) is transmitted for all beams can be the period associated with the transmission of the low-power synchronization signal (e.g., LP-SS).

[0338] Alternatively, for example, based on the SFN of the period at which the transmission of the low-power synchronization signal (e.g., LP-SS) begins, if SFN mod 2 = 0, the low-power synchronization signal (e.g., LP-SS) for the even-numbered synchronization signal block (e.g., SSB) beam may be transmitted, and if SFN mod 2 = 1, the low-power synchronization signal (e.g., LP-SS) for the odd-numbered synchronization signal block (e.g., SSB) beam may be transmitted.

[0339] FIG. 12 illustrates transmission beams of a low-power synchronization signal (e.g., LP-SS) determined among transmission beams used in a synchronization signal block (e.g., SSB) burst according to one embodiment of the present disclosure. The embodiment of FIG. 12 may be combined with various embodiments of the present disclosure, and the description, function, procedure, proposal, method, and / or operation of said embodiment may be omitted.

[0340] Referring to FIG. 12, for example, a synchronization signal block (e.g., SSB) burst is shown in which the number of synchronization signal blocks (e.g., SSB) constituting the burst is 8. For example, the synchronization signal block (e.g., SSB) burst may include synchronization signal blocks (e.g., SSB) indexed to indices 1 through 8.

[0341] For example, the terminal can obtain information about the beams used for transmitting the synchronization signal block (e.g., SSB) burst (e.g., the first to eighth beams) or information about the quasi-co-location (QCL) characteristics (by receiving from the base station).

[0342] Subsequently, the terminal can obtain information regarding the beam used for transmitting the low-power synchronization signal (e.g., LP-SS) or information regarding QCL characteristics from the base station. For example, information regarding the beam used for transmitting the low-power synchronization signal (e.g., LP-SS) may include index information (e.g., 1, 3, 4, 7) of specific synchronization signal blocks (e.g., SSB) within a synchronization signal block (e.g., SSB) burst.

[0343] The terminal can identify the specific synchronization signal blocks (e.g., SSBs), determine that low-power synchronization signals (e.g., LP-SS) will be transmitted using the beams used for their transmission (e.g., 1st beam, 3rd beam, 4th beam, 7th beam) or QCL characteristics associated with their transmission, and receive the low-power synchronization signals (e.g., LP-SS) using the receiving beams corresponding to them.

[0344] For example, the received low-power synchronization signals (e.g., LP-SS) can be re-indexed to 1, 2, 3, and 4, respectively, within the group of received low-power synchronization signals (e.g., LP-SS).

[0345] [Method #1-1]

[0346] Method for determining the number of transmissions of a low-power synchronization signal (e.g., LP-SS)

[0347] For efficient mapping between low-power synchronization signals (e.g., LP-SS) and synchronization signal blocks (e.g., SSB), it may be important to appropriately determine the number of low-power synchronization signals (e.g., LP-SS) that can be transmitted within the period of the low-power synchronization signals (e.g., LP-SS). The time required to transmit the low-power synchronization signals (e.g., LP-SS) is determined by the characteristics of the low-power synchronization signals (e.g., LP-SS), which can directly affect the number of low-power synchronization signals (e.g., LP-SS) that can be transmitted.

[0348] The time required to transmit one low-power synchronization signal (e.g., LP-SS) can be determined by the bit sequence length (or binary pattern length) of the low-power synchronization signal (e.g., LP-SS) and the on / off keying modulation order (e.g., number of on / off keying symbols per OFDM symbol).

[0349] For example, if a low-power synchronization signal (e.g., LP-SS) consists of a sequence of N bits and the on / off keying modulation order is K, a total transmission time of N*K symbols may be required because K symbols are needed to transmit one bit. Alternatively, if one symbol may contain M=4 on / off keying symbols and m=2 on / off keying symbols are used to represent one bit, a total transmission time of N*m / M symbols may be required. Additionally, extra overhead or guard time for receiver measurement and synchronization acquisition may also need to be considered.

[0350] For example, if the period of a low-power synchronization signal (e.g., LP-SS) is T_period and the time required to transmit one low-power synchronization signal (e.g., LP-SS) is T_low-power synchronization signal (e.g., LP-SS), the maximum number of low-power synchronization signals (e.g., LP-SS) that can be transmitted within that period can be determined as floor(T_period / T_LP-SS). However, the actual number of low-power synchronization signals (e.g., LP-SS) transmitted can be set to a value less than or equal to this, and this can be determined by comprehensively considering the number of synchronization signal block (e.g., SSB) beams, system requirements, and power consumption.

[0351] For example, if the period of a low-power synchronization signal (e.g., LP-SS) is 40ms and 5ms is required to transmit one low-power synchronization signal (e.g., LP-SS), theoretically, up to 8 low-power synchronization signals (e.g., LP-SS) can be transmitted. If 8 synchronization signal block (e.g., SSB) beams are used in the system, it may be possible to transmit a corresponding low-power synchronization signal (e.g., LP-SS) for each synchronization signal block (e.g., SSB) beam.

[0352] The base station can adjust the time required to transmit a single low-power synchronization signal (e.g., LP-SS) by adjusting the sequence length or the on / off keying modulation order of the low-power synchronization signal (e.g., LP-SS). This allows the number of low-power synchronization signals (e.g., LP-SS) that can be transmitted within the low-power synchronization signal (e.g., LP-SS) cycle to be controlled, and the trade-off between coverage and the number of transmissions can be adjusted according to the system requirements.

[0353] Alternatively, conversely, the maximum number of transmittable low-power synchronization signals (e.g., LP-SS) may be separately set. If the number of transmittable low-power synchronization signals (e.g., LP-SS) derived by considering the time required to transmit low-power synchronization signals (e.g., LP-SS) is smaller than the set maximum number of low-power synchronization signals (e.g., LP-SS), the terminal may apply the derived value for receiving low-power synchronization signals (e.g., LP-SS); and if the number of low-power synchronization signals (e.g., LP-SS) is larger than the set maximum number of low-power synchronization signals (e.g., LP-SS), the terminal may attempt to receive low-power synchronization signals (e.g., LP-SS) by considering the set maximum number of low-power synchronization signals (e.g., LP-SS).

[0354] [Method #2]

[0355] Coordinated operation of low-power wake-up signals (e.g., LP-WUS) and low-power synchronization signals (e.g., LP-SS)

[0356] For example, the low-power wake-up signal (e.g., LP-WUS) and the low-power synchronization signal (e.g., LP-SS) have different purposes, as a signal for waking up the terminal and a signal for synchronization and measurement of the low-power receiver, respectively. However, for reliable reception of the low-power wake-up signal (e.g., LP-WUS), proper synchronization and channel state measurement through the low-power synchronization signal (e.g., LP-SS) may need to be performed beforehand. Therefore, efficient coordinated operation of the low-power wake-up signal (e.g., LP-WUS) and the low-power synchronization signal (e.g., LP-SS) may be required.

[0357] According to one embodiment of the present disclosure, when receiving a low-power wake-up signal (e.g., LP-WUS), the terminal can select an optimal beam based on the measurement results of a low-power synchronization signal (e.g., LP-SS). For example, the terminal may select the beam with the highest measured value (e.g., LP-RSRP) of the low-power synchronization signal (e.g., LP-SS), or select (a beam for receiving the low-power wake-up signal (e.g., LP-WUS)) from among beams having a low-power synchronization signal (e.g., LP-SS) measured value that exceeds a set threshold. Additionally, the terminal may select a beam by considering the MR (main radio) measurement results of the synchronization signal block (e.g., SSB) beam associated with the low-power synchronization signal (e.g., LP-SS).

[0358] FIG. 13 illustrates a transmission beam of a low-power wake signal (e.g., LP-WUS) determined based on a reference signal reception power associated with the transmission of low-power synchronization signals (e.g., LP-SS) according to one embodiment of the present disclosure. The embodiment of FIG. 13 may be combined with various embodiments of the present disclosure, and the description, function, procedure, proposal, method, and / or operation of the said embodiment may be omitted.

[0359] Referring to FIG. 13, low-power synchronization signals (e.g., LP-SS) are shown, which are determined to be received by the terminal, for example, as in the embodiment of FIG. 12. For example, the terminal may measure the reference signal reception power associated with each of the low-power synchronization signals (e.g., LP-SS), and these measurement results may include measurement results for the first beam, the third beam, the fourth beam, and the seventh beam (or, the reception beams associated therewith).

[0360] For example, the terminal may decide to receive a low-power wake signal (e.g., LP-WUS) based on the receiving beam corresponding to the third beam, which has the highest reference signal receiving power (e.g., RSRP) value among the measurement results for the first beam, third beam, fourth beam, and seventh beam (or, receiving beams associated with them).

[0361] Through this, a power saving effect of the low-power synchronization signal (e.g., LP-SS) operation can be achieved while increasing the probability of receiving the power wake-up signal (e.g., LP-WUS), thereby increasing the probability that the terminal can wake up when needed.

[0362] According to one embodiment of the present disclosure, a monitoring operation of a low-power wake-up signal (e.g., LP-WUS) of a terminal can be determined based on the measurement result of a low-power synchronization signal (e.g., LP-SS).

[0363] For example, if the measurement result of a low-power synchronization signal (e.g., LP-SS) is below a certain threshold value, the terminal can stop monitoring the low-power wake signal (e.g., LP-WUS) and switch to monitoring paging opportunities (e.g., PO) according to existing technology.

[0364] On the other hand, if the measurement result of the low-power synchronization signal (e.g., LP-SS) is above a threshold value, the terminal can continue monitoring the low-power wake signal (e.g., LP-WUS) in the corresponding beam.

[0365] According to one embodiment of the present disclosure, when a low-power wake-up signal (e.g., LP-WUS) is successfully received, the beam to be received by the terminal via MR when the terminal wakes up can be selected from among a synchronization signal block (e.g., SSB) beam associated with the beam used to receive the low-power wake-up signal (e.g., LP-WUS) or a synchronization signal block (e.g., SSB) beam associated with the measurement result of the low-power synchronization signal (e.g., LP-SS).

[0366] For example, if the reception of a low-power wake-up signal (e.g., LP-WUS) fails, the terminal may attempt to switch to another beam when monitoring the next low-power wake-up signal (e.g., LP-WUS), or perform beam reselection by remeasuring the low-power synchronization signal (e.g., LP-SS).

[0367] For example, in these operations, the delay time from the measurement of the low-power synchronization signal (e.g., LP-SS) to the reception of the low-power wake-up signal (e.g., LP-WUS), the delay time from the successful reception of the low-power wake-up signal (e.g., LP-WUS) to the MR wake-up, and the minimum time required for beam switching may need to be considered. These delay times may vary depending on the terminal capabilities or implementation, and the base station may set an appropriate timing offset in consideration of this.

[0368] According to one embodiment of the present disclosure, as previously described, a correlation may be defined between a beam used for transmitting a low-power wake signal (e.g., LP-WUS) and a beam used for transmitting a synchronization signal block (e.g., SSB) or a low-power synchronization signal (e.g., LP-SS) (if any). If a low-power synchronization signal (e.g., LP-SS) or a low-power wake signal (e.g., LP-WUS) corresponding to any synchronization signal block (e.g., SSB) beam is not transmitted, the best beam selected in the MR may not be measurable in the LR (e.g., low power radio). Alternatively, for example, the beam selected in the MR and the beam selected in the low-power synchronization signal (e.g., LP-SS) may be different. In such cases, the terminal may perform the following operations:

[0369] For example, the terminal can stop monitoring the low-power wake signal (e.g., LP-WUS) and receive paging through operation according to the prior art.

[0370] Alternatively, for example, the terminal may separately select the best beam among the synchronization signal blocks (e.g., SSB) used for transmitting a low-power wake signal (e.g., LP-WUS) or a low-power synchronization signal (e.g., LP-SS), and when receiving a low-power wake signal (e.g., LP-WUS) / low-power synchronization signal (e.g., LP-SS), it may measure and receive based on that beam.

[0371] In this case, for example, the terminal may not perform offloading of low-power synchronization signal (e.g., LP-SS) measurements. For example, the terminal may not perform measurements of the MR's reference signal reception power (e.g., RSRP) based on the measurement results of the LR, and may perform measurements only by directly waking up the MR.

[0372] In this case, for example, the entry condition for monitoring a low-power wake signal (e.g., LP-WUS) may be based on the direct measurement result of MR, and the exit condition for monitoring a low-power wake signal (e.g., LP-WUS) may be based on the measurement result of LR.

[0373] Alternatively, for example, the terminal may consider both MR and LR measurement results for the entry and exit conditions of monitoring a low-power wake signal (e.g., LP-WUS). For example, the terminal may enter if both measurement results are greater than a specific threshold and exit if they are lower than a certain threshold.

[0374] For example, for this case only, the association between the synchronization signal block (e.g., SSB) beam and the low-power wake signal (e.g., LP-WUS) beam may be configured or predefined.

[0375] According to one embodiment of the present disclosure, a method may be considered in which a low-power wake signal (e.g., LP-WUS) uses the same number of beams as a low-power synchronization signal (e.g., LP-SS). In this case, the nth low-power wake signal (e.g., LP-WUS) beam can be directly mapped to the nth low-power synchronization signal (e.g., LP-SS) beam, thereby allowing the measurement result of the low-power synchronization signal (e.g., LP-SS) to be directly utilized in the selection of the low-power wake signal (e.g., LP-WUS) beam.

[0376] Alternatively, for example, if there are a total of 16 synchronization signal block (e.g., SSB) beams and 4 low-power synchronization signal (e.g., LP-SS) beams, each consecutive 4 synchronization signal block (e.g., SSB) indices are set as one group (e.g., {0, 1, 2, 3}, {4, 5, 6, 7}, {8, 9, 10, 11}, {12, 13, 14, 15}), and the beam with the lowest synchronization signal block (e.g., SSB) index in each group can be selected as the low-power synchronization signal (e.g., LP-SS) beam (e.g., synchronization signal block (e.g., SSB) beams 0, 4, 8, and 12).

[0377] Alternatively, for example, if there are a total of 16 synchronization signal block (e.g., SSB) beams and 4 low-power synchronization signal (e.g., LP-SS) beams, the base station may separately set 4 synchronization signal block (e.g., SSB) beam indices to be used for low-power synchronization signals (e.g., LP-SS), and for other synchronization signal block (e.g., SSB) beams that do not correspond to low-power synchronization signals (e.g., LP-SS), the association between the low-power synchronization signals (e.g., LP-SS) and the synchronization signal block (e.g., SSB) beams may be configured according to a different rule.

[0378] For example, the other rule mentioned above may be that a synchronization signal block (e.g., SSB) beam is mapped to the nearest low-power synchronization signal (e.g., LP-SS) in time or index.

[0379] For example, this can be useful when the base station separately configures the RF of a low-power wake signal (e.g., LP-WUS) or performs beamforming separately. These associations can be determined by predefined rules or established through signaling such as System Information Blocks (e.g., SIB) / Radio Resource Control (e.g., RRC).

[0380] [Method #3]

[0381] Synchronization signal block (e.g., SSB), low-power synchronization signal (e.g., LP-SS), low-power wake-up signal (e.g., LP-WUS), and paging opportunity (e.g., PO) reception association operation

[0382] For example, to perform the reception of a paging opportunity (e.g., PO) from the reception of a low-power wake signal (e.g., LP-WUS), appropriate channel state measurement and beam selection of the terminal for this purpose may be performed beforehand. To this end, efficient coupling operation between the LR and MR up to the reception of the paging opportunity (e.g., PO) may be required.

[0383] Alternatively, for example, a beam used for transmitting a single low-power wake signal (e.g., LP-WUS) monitoring opportunity (e.g., MO) may be connected to a single synchronization signal block (e.g., SSB) beam (or a group of multiple synchronization signal blocks (e.g., SSB) beams), and a beam used for transmitting a single low-power synchronization signal (e.g., LP-SS) may also be connected to a single synchronization signal block (e.g., SSB) beam (or a group of synchronization signal blocks (e.g., SSB) beams).

[0384] For example, the relationship between the beam of a low-power wake-up signal (e.g., LP-WUS) and the beam of a low-power synchronization signal (e.g., LP-SS) can be established by using a single synchronization signal block (e.g., SSB) beam (or a single synchronization signal block (e.g., SSB) beam group) as an anchor. Based on this operation, when receiving a low-power wake-up signal (e.g., LP-WUS), the terminal can select the optimal beam based on the measurement results of the low-power synchronization signal (e.g., LP-SS).

[0385] For example, the terminal may select the beam with the highest measured value (e.g., LP-RSRP) of the low-power synchronization signal (e.g., LP-SS), or select the optimal beam among beams having a measured value of the low-power synchronization signal (e.g., LP-SS) that exceeds a set threshold. Additionally, for example, the terminal may select a beam by considering the MR measurement results of the synchronization signal block (e.g., SSB) beam associated with the low-power synchronization signal (e.g., LP-SS).

[0386] For example, the terminal can select a beam of the low-power wake signal (e.g., LP-WUS) based on the selection of the synchronization signal block (e.g., SSB) beam by utilizing the association between the low-power wake signal (e.g., LP-WUS) and the synchronization signal block (e.g., SSB) beam, or perform a beam selection of the low-power wake signal (e.g., LP-WUS) based on the selection of the low-power synchronization signal (e.g., LP-SS) beam.

[0387] For example, the terminal can receive a low-power wake-up signal (e.g., LP-WUS) using a selected beam. The terminal can use one or more beams to receive a low-power wake-up signal (e.g., LP-WUS) on a low-power wake-up signal opportunity (e.g., LO), and among these, the synchronization signal block (e.g., SSB) associated with the beam of the low-power wake-up signal (e.g., LP-WUS) monitoring opportunity (e.g., MO) on the low-power wake-up signal opportunity (e.g., LO) that succeeded in detecting the terminal identifier can be considered for receiving a paging opportunity (e.g., PO).

[0388] For example, the terminal may attempt to receive a low-power wake-up signal (e.g., LP-WUS) using one or more beams, and may attempt to receive a paging message in a paging monitoring opportunity (e.g., PO) associated with the beam used to transmit the low-power wake-up signal (e.g., LP-WUS) monitoring opportunity (e.g., MO) that succeeded in receiving the low-power wake-up signal (e.g., LP-WUS).

[0389] In a first aspect of the present disclosure, a method used by a terminal in a wireless communication system may be provided, comprising the step of performing an operation proposed in the present disclosure.

[0390] In a second aspect of the present disclosure, a terminal used in a wireless communication system may be provided, comprising: at least one processor; and at least one computer memory operably connected to the at least one processor and, when executed, causes the at least one processor to perform the operation proposed in the present disclosure.

[0391] In a third aspect of the present disclosure, a device for a terminal may be provided, comprising: at least one processor; and at least one computer memory operably connected to the at least one processor and, when executed, causes the at least one processor to perform the operation proposed in the present disclosure.

[0392] In a fourth aspect of the present disclosure, a computer-readable storage medium may be provided that includes at least one computer program that, when executed, causes at least one processor to perform the operation proposed in the present disclosure.

[0393] In a fifth aspect of the present disclosure, a method used by a base station in a wireless communication system may be provided, comprising the step of performing the operation proposed in the present disclosure.

[0394] In a sixth aspect of the present disclosure, a base station used in a wireless communication system may be provided, comprising: at least one processor; and at least one computer memory operably connected to the at least one processor and, when executed, causing the at least one processor to perform the operation proposed in the present disclosure.

[0395] Herein, the operations proposed in this disclosure may be described separately for convenience, but unless specifically stated otherwise, each operation may be combined with others.

[0396] A low-power wake-up signal (e.g., LP-WUS) is a low-power wake-up signal that allows the terminal to monitor paging at low power when it is in a state where it is not monitoring paging by default (idle state), and may include an instruction to perform paging after a specific time interval from the time it is received.

[0397] Here, for low-power synchronization signals (e.g., LP-SS), effective beam mapping with synchronization signal blocks (e.g., SSB) may be essential. Since low-power wake signals (e.g., LP-WUS) operate at low frequencies, they may occupy a wide time interval. Consequently, if low-power synchronization signals (e.g., LP-SS), which are synchronization signals associated with low-power wake signals (e.g., LP-WUS), are transmitted based on all beams identical to those of synchronization signal blocks (e.g., SSB), overlap may occur between low-power synchronization signals (e.g., LP-SS), preventing normal transmission. Alternatively, it may be difficult or impossible to transmit the same number of beams to low-power synchronization signals (e.g., LP-SS) during the time that synchronization signal blocks (e.g., SSB) are transmitted beam by beam. To this end, if the number of beams used in the low-power synchronization signal (e.g., LP-SS) / low-power wake-up signal (e.g., LP-WUS) is adjusted, the number of beams between the low-power synchronization signal (e.g., LP-SS) / low-power wake-up signal (e.g., LP-WUS) and the synchronization signal block (e.g., SSB) may differ, and problems may occur in terminal operation due to beam mismatch between the MR (main radio) and LR (LP-WUR).

[0398] According to one embodiment of the present disclosure, a low-power synchronization signal (e.g., LP-SS) may be transmitted using some of the beams used for the actual transmission of a synchronization signal block (e.g., SSB). Specifically, a first device may receive information related to at least one first beam used for the actual transmission of a synchronization signal block (e.g., SSB), receive configuration information related to a low-power synchronization signal (e.g., LP-SS) through a synchronization signal block (e.g., SSB) based on the at least one first beam, receive a low-power synchronization signal (e.g., LP-SS) using at least one second beam based on the configuration information, and receive a low-power wake-up signal (e.g., LP-WUS) based on the low-power synchronization signal (e.g., LP-SS). For example, a base station may separately provide an index of a synchronization signal block (e.g., SSB) that uses a beam associated with the beam used for the transmission of the low-power synchronization signal (e.g., LP-SS) among the indices of the synchronization signal blocks (e.g., SSB) that were actually transmitted.

[0399] According to various embodiments of the present disclosure, the reception period of a synchronization signal block (e.g., SSB) and the reception period of a low-power synchronization signal (e.g., LP-SS) can be aligned equally by saving time resources used for transmitting a low-power synchronization signal (e.g., LP-SS). Additionally, collisions between low-power synchronization signals (e.g., LP-SS) transmitted using different beams at low frequencies can be prevented.

[0400] For example, if a terminal is provided with information (e.g., wus-LPSS-beamSubset) about at least one beam associated with a weather signal and / or a low-power synchronization signal (e.g., LP-SS), the terminal may receive the low-power synchronization signal (e.g., LP-SS) and / or the weather signal (e.g., WUS) based on the quasi-co-location (QCL) characteristics with the (already) transmitted synchronization signal (e.g., SS) and / or physical broadcast channel (e.g., PBCH) block indicated by the information (e.g., wus-LPSS-beamSubset) about at least one beam associated with the weather signal and / or the low-power synchronization signal (e.g., LP-SS).

[0401] Alternatively, for example, the terminal may receive a low-power synchronization signal (e.g., LP-SS) and / or a wake-up signal (e.g., WUS) based on the QCL characteristics with a (already) transmitted synchronization signal (e.g., SS) and / or a physical broadcast channel (e.g., PBCH) block, indicated by information (e.g., ssb-PositionsInBurst) related to the location of a synchronization signal block within a burst, which is included in a first system information block (e.g., SIB1).

[0402] For example, one weather signal (e.g., WUS) opportunity may include K*M weather signal (e.g., WUS) monitoring opportunities, and said K*M weather signal (e.g., WUS) monitoring opportunities may be indexed continuously over time.

[0403] Here, for example, K may mean the number of transmitted synchronization signal (e.g., SS) and / or physical broadcast channel (e.g., PBCH) blocks indicated by information (e.g., ssb-PositionsInBurst) regarding the location of the synchronization signal block within the burst included in the first system information block (e.g., SIB1), and M may be the number of wake signal (e.g., WUS) monitoring opportunities associated with each of the K transmitted synchronization signal (e.g., SS) and / or physical broadcast channel (e.g., PBCH) blocks, provided by information (e.g., MONumperLO) regarding the number of monitoring opportunities included in the low-power wake signal opportunity (e.g., LO).

[0404] And, for example, a weather signal (e.g., WUS) monitoring opportunity (1≤m≤M and 1≤k≤K) having index (k-1)*M+m may be in a QCL relationship with the k-th transmitted synchronization signal (e.g., SS) and / or physical broadcast channel (e.g., PBCH) block with respect to QCL type C or type D characteristics, where applicable.

[0405] FIG. 14 illustrates a procedure of a method that can be performed by a first device according to one embodiment of the present disclosure. The embodiment of FIG. 14 may be combined with various embodiments of the present disclosure, and the description, function, procedure, suggestion, method, and / or operation of said embodiment may be omitted.

[0406] Referring to FIG. 14, in step S1410, the first device may receive information from a base station regarding at least one first beam associated with the transmission of a synchronization signal block. In step S1420, the first device may obtain information regarding at least one second beam that will serve as the basis for receiving a low-power synchronization signal. In step S1430, the first device may receive a first low-power synchronization signal based on the at least one second beam. For example, the at least one second beam may be included in the at least one first beam.

[0407] For example, additionally, the first device may receive a first synchronization signal block based on at least one first beam from the base station.

[0408] For example, information regarding the at least one second beam can be obtained based on the first synchronization signal block.

[0409] For example, additionally, the first device can receive a low-power weather signal using the at least one second beam.

[0410] For example, the low-power weather signal can be received using the at least one second beam based on the fact that the measurement value for the first low-power synchronization signal exceeds a threshold value.

[0411] For example, additionally, the first device may receive a low-power weather signal using at least one third beam. For example, the at least one third beam may be determined based on a measurement of the first low-power synchronization signal.

[0412] For example, the at least one third beam may be at least one beam re-selected based on the failure of monitoring for the low-power weather signal using the same beam as the first low-power synchronization signal.

[0413] For example, additionally, the first device may receive the first low-power synchronization signal based on at least one third beam excluding at least one second beam among the at least one first beam.

[0414] For example, the first low-power synchronization signal is received in a second time interval based on the at least one third beam, and the first time interval in which the first low-power synchronization signal is received based on the at least one second beam and the second time interval may constitute a period associated with the low-power synchronization signal.

[0415] For example, the at least one second beam may have a continuous index within the at least one first beam.

[0416] For example, the information regarding the at least one second beam may include at least one index associated with the at least one second beam within the at least one first beam.

[0417] For example, additionally, the first device may switch to a paging monitoring mode in which the low-power wake signal is not used, based on the fact that the measured value for the first low-power synchronization signal is below a threshold value.

[0418] The above-described embodiment may be applied to various devices described below. First, the processor (102) of the first device (100) may control the transceiver (106) to receive information regarding at least one first beam related to the transmission of a synchronization signal block from the base station (300). Then, the processor (102) of the first device (100) may obtain information regarding at least one second beam that will serve as the basis for receiving a low-power synchronization signal. Then, the processor (102) of the first device (100) may control the transceiver (106) to receive a first low-power synchronization signal based on the at least one second beam. For example, the at least one second beam may be included in the at least one first beam.

[0419] According to one embodiment of the present disclosure, a first device may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the instructions executed by the at least one processor, the first device may: receive information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtain information about at least one second beam to be the basis for receiving a low-power synchronization signal; and receive a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0420] For example, additionally, the above commands may cause the first device to receive a first synchronization signal block based on at least one first beam from the base station.

[0421] For example, information regarding the at least one second beam can be obtained based on the first synchronization signal block.

[0422] For example, additionally, the above commands may cause the first device to receive a low-power weather signal using the at least one second beam.

[0423] For example, the low-power weather signal can be received using the at least one second beam based on the fact that the measurement value for the first low-power synchronization signal exceeds a threshold value.

[0424] For example, additionally, the above commands may cause the first device to receive a low-power wake signal using at least one third beam. For example, the at least one third beam may be determined based on a measurement of the first low-power synchronization signal.

[0425] For example, the at least one third beam may be at least one beam re-selected based on the failure of monitoring for the low-power weather signal using the same beam as the first low-power synchronization signal.

[0426] For example, additionally, the above commands may cause the first device to receive the first low-power synchronization signal based on at least one third beam excluding at least one second beam among the at least one first beam.

[0427] For example, the first low-power synchronization signal is received in a second time interval based on the at least one third beam, and the first time interval in which the first low-power synchronization signal is received based on the at least one second beam and the second time interval may constitute a period associated with the low-power synchronization signal.

[0428] For example, the at least one second beam may have a continuous index within the at least one first beam.

[0429] For example, the information regarding the at least one second beam may include at least one index associated with the at least one second beam within the at least one first beam.

[0430] For example, additionally, the above commands may cause the first device to switch to a paging monitoring mode in which the low-power wake signal is not used, based on the fact that the measured value for the first low-power synchronization signal is below a threshold value.

[0431] According to one embodiment of the present disclosure, a processing device configured to control a first device may be provided. For example, the processing device may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the instructions executed by the at least one processor, the first device may: receive information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtain information about at least one second beam to be the basis for receiving a low-power synchronization signal; and receive a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0432] According to one embodiment of the present disclosure, a non-transient computer-readable storage medium recording instructions may be provided. For example, when the instructions are executed, the first device may: receive information about at least one first beam related to the transmission of a synchronization signal block from a base station; obtain information about at least one second beam that will be the basis for receiving a low-power synchronization signal; and receive a first low-power synchronization signal based on the at least one second beam, wherein the at least one second beam may be included in the at least one first beam.

[0433] FIG. 15 illustrates a procedure of a method that can be performed by a second device according to one embodiment of the present disclosure. The embodiment of FIG. 15 may be combined with various embodiments of the present disclosure, and the description, function, procedure, suggestion, method, and / or operation of said embodiment may be omitted.

[0434] Referring to FIG. 15, in step S1510, the second device may transmit information about at least one first beam related to the transmission of a synchronization signal block to the first device. In step S1520, the second device may obtain information about at least one second beam that will serve as the basis for receiving a low-power synchronization signal to the first device. In step S1530, the second device may transmit a first low-power synchronization signal based on the at least one second beam to the first device. For example, the at least one second beam may be included in the at least one first beam.

[0435] For example, additionally, the second device may transmit a first synchronization signal block based on at least one first beam to the first device.

[0436] For example, information regarding the at least one second beam may be included in the first synchronization signal block.

[0437] For example, additionally, the second device may transmit a low-power weather signal to the first device using at least one beam corresponding to the at least one second beam.

[0438] For example, the low-power weather signal may be received by the first device using at least one second beam based on the measurement value of the first device for the first low-power synchronization signal exceeding a threshold value.

[0439] For example, additionally, the second device may transmit a low-power weather signal to the first device using at least one beam corresponding to at least one third beam. For example, the at least one third beam may be determined based on a measurement of the first low-power synchronization signal.

[0440] For example, the at least one third beam may be at least one beam re-selected based on the failure of monitoring for the low-power weather signal using the same beam as the first low-power synchronization signal.

[0441] For example, additionally, the second device may transmit the first low-power synchronization signal to the first device based on at least one beam corresponding to at least one third beam excluding at least one second beam among at least one first beam.

[0442] For example, the first low-power synchronization signal is received in a second time interval based on the at least one third beam, and the first time interval in which the first low-power synchronization signal is received based on the at least one second beam and the second time interval may constitute a period associated with the low-power synchronization signal.

[0443] For example, the at least one second beam may have a continuous index within the at least one first beam.

[0444] For example, the information regarding the at least one second beam may include at least one index associated with the at least one second beam within the at least one first beam.

[0445] For example, the second device mentioned above may be a base station.

[0446] The above-described embodiment may be applied to various devices described below. First, the processor (202) of the second device (200) may control the transceiver (206) to transmit information regarding at least one first beam related to the transmission of a synchronization signal block to the first device (100). Then, the processor (202) of the second device (200) may control the transceiver (206) to transmit information regarding at least one second beam that will serve as the basis for receiving a low-power synchronization signal to the first device (100). Then, the processor (202) of the second device (200) may control the transceiver (206) to transmit a first low-power synchronization signal based on the at least one second beam to the first device (100). For example, the at least one second beam may be included in the at least one first beam.

[0447] According to one embodiment of the present disclosure, a second device may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the instructions being executed by the at least one processor, the second device may: transmit information about at least one first beam related to the transmission of a synchronization signal block to the first device; obtain information about at least one second beam that will be the basis for the reception of a low-power synchronization signal to the first device; and transmit a first low-power synchronization signal based on the at least one second beam to the first device, wherein the at least one second beam may be included in the at least one first beam.

[0448] For example, additionally, the above commands may cause the second device to: transmit a first synchronization signal block based on the at least one first beam to the first device.

[0449] For example, information regarding the at least one second beam may be included in the first synchronization signal block.

[0450] For example, additionally, the above commands may cause the second device to: transmit a low-power weather signal to the first device using at least one beam corresponding to the at least one second beam.

[0451] For example, the low-power weather signal may be received by the first device using at least one second beam based on the measurement value of the first device for the first low-power synchronization signal exceeding a threshold value.

[0452] For example, additionally, the commands may cause the second device to: transmit a low-power wake signal to the first device using at least one beam corresponding to at least one third beam. For example, the at least one third beam may be determined based on a measurement of the first low-power synchronization signal.

[0453] For example, the at least one third beam may be at least one beam re-selected based on the failure of monitoring for the low-power weather signal using the same beam as the first low-power synchronization signal.

[0454] For example, additionally, the above commands may cause the second device to: transmit the first low-power synchronization signal to the first device based on at least one beam corresponding to at least one third beam excluding at least one second beam among at least one first beam.

[0455] For example, the first low-power synchronization signal is received in a second time interval based on the at least one third beam, and the first time interval in which the first low-power synchronization signal is received based on the at least one second beam and the second time interval may constitute a period associated with the low-power synchronization signal.

[0456] For example, the at least one second beam may have a continuous index within the at least one first beam.

[0457] For example, the information regarding the at least one second beam may include at least one index associated with the at least one second beam within the at least one first beam.

[0458] For example, the second device mentioned above may be a base station.

[0459] Various embodiments of the present disclosure may be combined with one another.

[0460] The following describes an apparatus to which various embodiments of the present disclosure may be applied.

[0461] Although not limited to this, the various descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document may be applied to various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0462] Examples are provided in more detail below with reference to the drawings. In the following drawings and descriptions, the same reference numerals may represent the same or corresponding hardware blocks, software blocks, or function blocks unless otherwise described.

[0463] FIG. 16 shows a communication system (1) according to one embodiment of the present disclosure. The embodiment of FIG. 16 can be combined with various embodiments of the present disclosure.

[0464] Referring to FIG. 16, a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Thing) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with wireless communication functions, an autonomous vehicle, a vehicle capable of performing inter-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone) and / or an Aerial Vehicle (AV) (e.g., Advanced Air Mobility). The XR device includes an Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) device and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, digital signage, a vehicle, a robot, etc. The portable device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch, smart glasses), a computer (e.g., a laptop, etc.). The home appliance may include a TV, a refrigerator, a washing machine, etc. The IoT device may include a sensor, a smart meter, etc. For example, a base station and a network may be implemented as a wireless device, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0465] Here, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present disclosure may include LTE, NR, and 6G, as well as Narrowband Internet of Things for low-power communication. In this case, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented according to standards such as LTE Cat NB1 and / or LTE Cat NB2, but is not limited to the names mentioned above. Additionally, or generally, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present disclosure may perform communication based on LTE-M technology. In this case, for example, LTE-M technology may be an example of LPWAN technology and may be referred to by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology may be implemented in at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the names mentioned above. Additionally or generally, wireless communication technology implemented in the wireless devices (100a to 100f) of the present disclosure may include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) for low-power communication, and is not limited to the names mentioned above. As an example, ZigBee technology can create personal area networks (PANs) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and may be referred to by various names.

[0466] Wireless devices (100a to 100f) can be connected to a network (300) through a base station (200). Artificial Intelligence (AI) technology may be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) through the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. The wireless devices (100a to 100f) may communicate with each other through the base station (200) / network (300), but they may also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Also, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0467] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base station (200) and base station (200) / base station (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR), such as uplink / downlink communication (150a), sidelink communication (150b) (or D2D communication), and inter-base station communication (150c) (e.g., relay, IAB (Integrated Access Backhaul)). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to / from each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, based on the various proposals of the present disclosure, at least some of the following may be performed: various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), resource allocation processes, etc.

[0468] FIG. 17 shows a wireless device according to one embodiment of the present disclosure. The embodiment of FIG. 17 may be combined with various embodiments of the present disclosure.

[0469] Referring to FIG. 17, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} may correspond to {wireless device (100x), base station (200)} and / or {wireless device (100x), wireless device (100x)} of FIG. 16.

[0470] For example, the description of the first wireless device (or device) and the second wireless device (or device) below may be extended to the third wireless device (300) (or device) or the wireless device (or device) corresponding to a subsequent reference number. For example, the reference number of the processor of the third wireless device (300) may be 302, and the reference number of the transceiver may be 306.

[0471] The first wireless device (100) includes one or more processors (102) and one or more memories (104), and may additionally include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memory (104) and / or transceivers (106) and may be configured to implement the descriptions, functions, procedures, proposals, methods and / or sequences of operation disclosed in this document. For example, the processor (102) may process information within the memory (104) to generate a first information / signal and then transmit a wireless signal containing the first information / signal through the transceiver (106). Additionally, the processor (102) may receive a wireless signal containing a second information / signal through the transceiver (106) and then store information obtained from the signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may store software code containing instructions for performing some or all of the processes controlled by the processor (102) or for performing the descriptions, functions, procedures, proposals, methods, and / or operation sequence diagrams disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals through one or more antennas (108). The transceiver (106) may include a transmitter and / or receiver. The transceiver (106) may be combined with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may refer to a communication modem / circuit / chip.

[0472] The second wireless device (200) includes one or more processors (202) and one or more memories (204), and may additionally include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memory (204) and / or transceivers (206) and may be configured to implement the descriptions, functions, procedures, proposals, methods and / or sequences of operation disclosed in this document. For example, the processor (202) may process information within the memory (204) to generate a third information / signal and then transmit a wireless signal containing the third information / signal through the transceiver (206). Additionally, the processor (202) may receive a wireless signal containing a fourth information / signal through the transceiver (206) and then store information obtained from the signal processing of the fourth information / signal in the memory (204). Memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, memory (204) may store software code containing instructions for performing some or all of the processes controlled by the processor (202) or for performing the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document. Here, the processor (202) and memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). A transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals through one or more antennas (208). The transceiver (206) may include a transmitter and / or receiver. The transceiver (206) may be interchangeable with an RF unit. In this disclosure, a wireless device may refer to a communication modem / circuit / chip.

[0473] Hereinafter, hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document. One or more processors (102, 202) may generate a signal (e.g., baseband signal) containing a PDU, SDU, message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document and provide it to one or more transceivers (106, 206). One or more processors (102, 202) may receive a signal (e.g., baseband signal) from one or more transceivers (106, 206) and may obtain a PDU, SDU, message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts disclosed in this document.

[0474] One or more processors (102, 202) may be referred to as a controller, microcontroller, microprocessor, or microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. Firmware or software configured to perform the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this document may be contained in one or more processors (102, 202) or stored in one or more memories (104, 204) and driven by one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this document may be implemented using firmware or software in the form of code, instructions, and / or sets of instructions.

[0475] One or more memories (104, 204) may be connected to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories (104, 204) may be composed of ROM, RAM, EPROM, flash memory, hard drive, registers, cache memory, computer read storage media, and / or combinations thereof. One or more memories (104, 204) may be located inside and / or outside of one or more processors (102, 202). Additionally, one or more memories (104, 204) may be connected to one or more processors (102, 202) through various technologies such as wired or wireless connections.

[0476] One or more transceivers (106, 206) may transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or operation flowcharts, etc., of this document to one or more other devices. One or more transceivers (106, 206) may receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or operation flowcharts, etc., disclosed in this document from one or more other devices. For example, one or more transceivers (106, 206) may be connected to one or more processors (102, 202) and may transmit and receive wireless signals. For example, one or more processors (102, 202) may control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be connected to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, etc., as described in the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document through one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert the received wireless signal / channel, etc. from an RF band signal to a baseband signal in order to process the received user data, control information, wireless signal / channel, etc. using one or more processors (102, 202).One or more transceivers (106, 206) can convert user data, control information, wireless signals / channels, etc. processed using one or more processors (102, 202) from baseband signals to RF band signals. To this end, one or more transceivers (106, 206) may include (analog) oscillators and / or filters.

[0477] FIG. 18 shows a signal processing circuit for a transmission signal according to one embodiment of the present disclosure. The embodiment of FIG. 18 can be combined with various embodiments of the present disclosure.

[0478] Referring to FIG. 18, the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). Although not limited thereto, the operation / function of FIG. 18 may be performed in the processor (102, 202) and / or transceiver (106, 206) of FIG. 17. The hardware elements of FIG. 18 may be implemented in the processor (102, 202) and / or transceiver (106, 206) of FIG. 17. For example, blocks 1010 through 1060 may be implemented in the processor (102, 202) of FIG. 17. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 17, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 17.

[0479] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 18. Here, the codeword is an encoded bit sequence of an information block. The information block may include a transmission block (e.g., UL-SCH transmission block, DL-SCH transmission block). The wireless signal can be transmitted through various physical channels (e.g., terminal-to-base station physical shared channel (e.g., PUSCH), base station-to-terminal physical shared channel (e.g., PDSCH)).

[0480] Specifically, a codeword can be converted into a scrambled bit sequence by a scrambler (1010). The scrambled sequence used for scrambling is generated based on an initialization value, which may include ID information of a wireless device, etc. The scrambled bit sequence can be modulated into a modulation symbol sequence by a modulator (1020). The modulation method may include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulation symbol sequence can be mapped to one or more transmission layers by a layer mapper (1030). The modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by a precoder (1040) (precoding). The output z of the precoder (1040) can be obtained by multiplying the output y of the layer mapper (1030) by an N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. Here, the precoder (1040) can perform precoding after performing transform precoding (e.g., DFT transform) on the complex modulation symbols. Additionally, the precoder (1040) can perform precoding without performing transform precoding.

[0481] A resource mapper (1050) can map the modulation symbols of each antenna port to a time-frequency resource. The time-frequency resource may include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. A signal generator (1060) generates a radio signal from the mapped modulation symbols, and the generated radio signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) may include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0482] The signal processing process for a received signal in a wireless device can be configured as the inverse of the signal processing process (1010–1060) of FIG. 18. For example, a wireless device (e.g., 100, 200 in FIG. 17) can receive a wireless signal from the outside through an antenna port / transceiver. The received wireless signal can be converted into a baseband signal through a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Subsequently, the baseband signal can be restored into a codeword through a resource de-mapper process, a postcoding process, a demodulation process, and a de-scrambling process. The codeword can be restored into the original information block through decoding. Accordingly, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource de-mapper, a postcoder, a demodulator, a de-scrambler, and a decoder.

[0483] FIG. 19 illustrates a wireless device according to one embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use-example / service (see FIG. 16). The embodiment of FIG. 19 may be combined with various embodiments of the present disclosure.

[0484] Referring to FIG. 19, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 17 and may be composed of various elements, components, units / parts, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and additional elements (140). The communication unit may include a communication circuit (112) and transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 17. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 17. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and additional elements (140) and controls the general operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on a program / code / command / information stored in the memory unit (130). Additionally, the control unit (120) may transmit information stored in the memory unit (130) to an external (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external (e.g., another communication device) via a wireless / wired interface through the communication unit (110) in the memory unit (130).

[0485] The additional element (140) can be configured in various ways depending on the type of wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 16, 100a), a vehicle (Fig. 16, 100b-1, 100b-2), an XR device (Fig. 16, 100c), a portable device (Fig. 16, 100d), a home appliance (Fig. 16, 100e), an IoT device (Fig. 16, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or financial device), a security device, a climate / environment device, an AI server / device (Fig. 16, 400), a base station (Fig. 16, 200), a network node, etc. Wireless devices can be used in a movable or fixed location depending on the use—e.g., service.

[0486] In FIG. 19, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least partially connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be connected via a wire, and the control unit (120) and the first unit (e.g., 130, 140) may be connected wirelessly via the communication unit (110). Additionally, each element, component, unit / part, and / or module within the wireless device (100, 200) may include one or more additional elements. For example, the control unit (120) may be composed of one or more sets of processors. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an Electronic Control Unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory and / or a combination thereof.

[0487] Hereinafter, an example of the implementation of FIG. 19 will be described in more detail with reference to the drawings.

[0488] FIG. 20 illustrates a portable device according to one embodiment of the present disclosure. The portable device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch, smart glasses), a portable computer (e.g., a laptop, etc.). The portable device may be referred to as an MS (Mobile Station), UT (User Terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile Station), or WT (Wireless Terminal). The embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.

[0489] Referring to FIG. 20, the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be configured as part of the communication unit (110). Blocks 110 to 130 / 140a to 140c each correspond to blocks 110 to 130 / 140 of FIG. 19.

[0490] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit (120) can control the components of the portable device (100) to perform various operations. The control unit (120) may include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / code / commands required for the operation of the portable device (100). Additionally, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the portable device (100) and may include wired / wireless charging circuits, batteries, etc. The interface unit (140b) can support the connection between the portable device (100) and other external devices. The interface unit (140b) may include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can receive or output video information / signals, audio information / signals, data, and / or information input by a user. The input / output unit (140c) may include a camera, a microphone, a user input unit, a display unit (140d), a speaker and / or a haptic module, etc.

[0491] For example, in the case of data communication, the input / output unit (140c) acquires information / signals (e.g., touch, text, voice, image, video) input from the user, and the acquired information / signals can be stored in the memory unit (130). The communication unit (110) converts the information / signals stored in the memory into wireless signals and can directly transmit the converted wireless signals to another wireless device or to a base station. Additionally, the communication unit (110) can receive wireless signals from another wireless device or base station and then restore the received wireless signals to their original information / signals. The restored information / signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, haptic) through the input / output unit (140c).

[0492] FIG. 21 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure. The vehicle or autonomous vehicle may be implemented as a mobile robot, a vehicle, a train, an aerial vehicle (AV), a ship, etc. The embodiment of FIG. 21 may be combined with various embodiments of the present disclosure.

[0493] Referring to FIG. 21, a vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d). The antenna unit (108) may be configured as part of the communication unit (110). Blocks 110 / 130 / 140a to 140d each correspond to blocks 110 / 130 / 140 of FIG. 19.

[0494] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, roadside base stations (Roadside units), etc.), and servers. The control unit (120) can perform various operations by controlling elements of the vehicle or autonomous vehicle (100). The control unit (120) may include an Electronic Control Unit (ECU). The driving unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The driving unit (140a) may include an engine, motor, power train, wheels, brakes, steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and may include wired / wireless charging circuits, batteries, etc. The sensor unit (140c) can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit (140c) may include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an inclination sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit (140d) may implement technologies such as maintaining the driving lane, technologies for automatically adjusting speed such as adaptive cruise control, technologies for automatically driving along a predetermined path, and technologies for automatically setting a path and driving when a destination is set.

[0495] For example, the communication unit (110) can receive map data, traffic information data, etc. from an external server. The autonomous driving unit (140d) can generate an autonomous driving path and a driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or the autonomous vehicle (100) moves along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can acquire the latest traffic information data from an external server non-periodically and can acquire surrounding traffic information data from surrounding vehicles. Additionally, during autonomous driving, the sensor unit (140c) can acquire vehicle status and surrounding environment information. The autonomous driving unit (140d) can update the autonomous driving path and the driving plan based on the newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving path, driving plan, etc. to an external server. An external server can predict traffic information data in advance using AI technology, etc., based on information collected from vehicles or autonomous vehicles, and can provide the predicted traffic information data to vehicles or autonomous vehicles.

[0496] The claims described in this disclosure may be combined in various ways. For example, the technical features of the method claims of this disclosure may be combined to be implemented as a device, and the technical features of the device claims of this disclosure may be combined to be implemented as a method. Additionally, the technical features of the method claims of this disclosure and the technical features of the device claims of this disclosure may be combined to be implemented as a device, and the technical features of the method claims of this disclosure and the technical features of the device claims of this disclosure may be combined to be implemented as a method.

Claims

In terms of method, A step of receiving information about at least one first beam related to the transmission of a synchronization signal block from a base station; A step of acquiring information about at least one second beam that will serve as the basis for receiving a low-power synchronization signal; and The method includes the step of receiving a first low-power synchronization signal based on at least one second beam, wherein A method in which at least one second beam is included in at least one first beam. In Article 1, A method further comprising the step of receiving a first synchronization signal block based on at least one beam corresponding to at least one first beam from the base station. In Article 2, A method in which information regarding at least one second beam is obtained based on the first synchronization signal block. In Article 1, A method further comprising the step of receiving a low-power weather signal using at least one second beam. In Article 4, A method in which the low-power weather signal is received using at least one second beam based on the fact that the measured value for the first low-power synchronization signal exceeds a threshold value. In Article 1, The method further includes the step of receiving a low-power weather signal using at least one third beam, wherein A method in which at least one third beam is determined based on a measurement value for the first low-power synchronization signal. In Article 6, A method in which at least one third beam is re-selected based on a failure of monitoring for the low-power weather signal using the same beam as the first low-power synchronization signal. In Article 1, A method further comprising the step of receiving the first low-power synchronization signal based on at least one third beam excluding at least one second beam among at least one first beam. In Article 8, The first low-power synchronization signal is received in a second time interval based on the at least one third beam, and A method in which the first time interval and the second time interval, in which the first low-power synchronization signal is received based on the at least one second beam, constitute a period associated with the low-power synchronization signal. In Article 1, A method in which at least one second beam has a continuous index within at least one first beam. In Article 1, A method in which information for the at least one second beam includes at least one index associated with the at least one second beam within the at least one first beam. In Article 1, A method further comprising the step of switching to a paging monitoring mode in which the low-power wake signal is not used, based on the fact that the measured value for the first low-power synchronization signal is below a threshold value. In Article 1, The above method is a method performed by a first device. In the first device, At least one transmitter / receiver; At least one processor; and It includes at least one memory connected to the above-mentioned at least one processor and storing instructions, Based on the above instructions being executed by the at least one processor, the first device: Receiving information regarding at least one first beam related to the transmission of a synchronization signal block from a base station; Acquiring information for at least one second beam that will serve as the basis for receiving a low-power synchronization signal; and To receive a first low-power synchronization signal based on at least one second beam, The first device, wherein the at least one second beam is included in the at least one first beam. In a processing device configured to control a first device, At least one processor; and It includes at least one memory connected to the above-mentioned at least one processor and storing instructions, Based on the above instructions being executed by the at least one processor, the first device: Receiving information regarding at least one first beam related to the transmission of a synchronization signal block from a base station; Acquiring information for at least one second beam that will serve as the basis for receiving a low-power synchronization signal; and To receive a first low-power synchronization signal based on at least one second beam, A processing device in which the at least one second beam is included in the at least one first beam. As a non-transient computer-readable storage medium recording instructions, When executed, the above commands cause the first device: Receiving information regarding at least one first beam related to the transmission of a synchronization signal block from a base station; Acquiring information for at least one second beam that will serve as the basis for receiving a low-power synchronization signal; and To receive a first low-power synchronization signal based on at least one second beam, The above at least one second beam is a non-transient computer-readable storage medium included in the above at least one first beam. In terms of method, A step of transmitting information about at least one first beam related to the transmission of a synchronization signal block to a first device; A step of transmitting information about at least one second beam to the first device to serve as the basis for receiving a low-power synchronization signal; and The method includes the step of transmitting a first low-power synchronization signal based on at least one second beam to the first device, wherein A method in which at least one second beam is included in at least one first beam. In Article 17, A method further comprising the step of transmitting a first synchronization signal block based on at least one first beam to the first device. In the second device, At least one transmitter / receiver; At least one processor; and It includes at least one memory connected to the above-mentioned at least one processor and storing instructions, Based on the execution of the above instructions by the at least one processor, the second device: To cause the first device to transmit information regarding at least one first beam associated with the transmission of a synchronization signal block; The first device above is enabled to acquire information about at least one second beam that will serve as the basis for receiving a low-power synchronization signal; and The first device transmits a first low-power synchronization signal based on at least one second beam, wherein The above at least one second beam is a second device included in the above at least one first beam. In Article 19, The above commands cause the second device to: A second device that enables the first device to transmit a first synchronization signal block based on at least one first beam.

Images