Method and apparatus for repeatedly transmitting low-power wake-up signal

Abstract

Proposed is a method for operation of a first device (100) in a wireless communication system. The method comprises the steps of: transmitting information related to a mobile equipment identifier of the first device (100) to a second device (200) through non-access stratum signaling; and monitoring repeated transmission of a low-power wake-up signal performed from the second device (200), on the basis that the first device (100) is included in a first group, wherein the non-access stratum signaling is forwarded to a third device (300) by the second device (200), and the inclusion of the first device (100) in the first group may be determined by the third device (300) on the basis of the mobile equipment identifier.

Description

Method and device for repeatedly transmitting low-power weather signals

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

[0002] 5G NR, the successor to LTE (long-term evolution), is a new clean-slate mobile communications system characterized by high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

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

[0005] According to one embodiment of the present disclosure, a method that can be performed by a first device can be provided. For example, the method includes: transmitting information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receiving first information related to a group to which the first device is included from the second device; and monitoring repetitive transmissions of a low power wake up signal performed by the second device based on the first device being included in the first group, wherein the non-access stratum signaling is forwarded by the second device to a third device, and the first information can be determined by the third device based on the mobile device identifier.

[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 coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the first device to: transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receive first information related to a group to which the first device belongs from the second device; and monitor, based on the first device's inclusion in the first group, a repetitive transmission of a low power wake up signal performed by the second device, wherein the non-access stratum signaling is forwarded by the second device to a third device, and the first information may be determined by the third device based on the mobile device identifier.

[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 coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receive first information related to a group to which the first device belongs from the second device; and monitor repetitive transmissions of a low power wake-up signal performed by the second device based on the first device's inclusion in the first group. For example, the non-access stratum signaling may be forwarded by the second device to a third device, and the first information may be determined by the third device based on the mobile device identifier.

[0008] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, cause a first device to: transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receive first information related to a group to which the first device belongs from the second device; and monitor repetitive transmissions of a low power wake up signal from the second device based on the first device's inclusion in the first group, wherein the non-access stratum signaling is forwarded by the second device to a third device, and the first information is determined by the third device based on the mobile device identifier.

[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 may include: receiving, from a first device, information related to a mobile device identifier of the first device via non-access stratum signaling; transmitting, to a third device, information related to the mobile device identifier via non-access stratum signaling; receiving, from the third device, first information related to a group including the first device via non-access stratum signaling; transmitting, to the first device, the first information via non-access stratum signaling; and performing repeated transmission of a low power wake up signal to a first group including the first device, wherein the first information can be determined by the third device based on the mobile device identifier.

[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 coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the second device to: receive, from a first device, information related to a mobile device identifier of the first device via non-access stratum signaling; transmit, to a third device, information related to the mobile device identifier via non-access stratum signaling; receive, from the third device, first information related to a group including the first device; transmit the first information to the first device; and perform repeated transmission of a low power wake up signal to a first group including the first device, wherein the first information may be determined by the third device based on the mobile device identifier.

[0011] Figure 1 illustrates a device-to-device communication procedure according to one embodiment of the present disclosure.

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

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

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

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

[0016] FIG. 6 illustrates 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 one 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 illustrates an operational flowchart of a terminal performing one or more physical channel / 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 illustrates an operational flowchart of a base station performing one or more physical channel / 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 channel / 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 illustrates a procedure for core network-based subgrouping and group-based low-power weather signal (e.g., LP-WUS) transmission based thereon, according to one embodiment of the present disclosure.

[0023] FIG. 13 illustrates a resource structure in which repetitive transmission of a low-power weather signal (e.g., LP-WUS) is performed according to an embodiment of the present disclosure.

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

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

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

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

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

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

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

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

[0032] In this disclosure, "A or B" can mean "only A," "only B," or "both A and B." In other words, "A or B" in this disclosure can be interpreted as "A and / or B." For example, "A, B or C" in this disclosure can mean "only A," "only B," "only C," or "any combination of A, B and C."

[0033] As used herein, a slash ( / ) or a comma 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 identically to “at least one of A and B.”

[0035] Additionally, in the present disclosure, “at least one of A, B and C” can 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” can mean “at least one of A, B and C.”

[0036] Additionally, parentheses used in the present disclosure may mean "for example." Specifically, when "control information (PDCCH)" is indicated, "PDCCH" may be suggested as an example of "control information." In other words, "control information" in the present disclosure is not limited to "PDCCH," and "PDCCH" may be suggested as an example of "control information." Furthermore, even when indicated as "control information (e.g., PDCCH)", "PDCCH" may be suggested 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 obtaining information may include the information being (pre-)set to the device, the information being received from another entity to the device, or the device generating the information.

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

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

[0041] In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device through predefined signaling (e.g., SIB, MAC, RRC, DCI (downlink control information), etc.) from a base station or a network. In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device through predefined signaling (e.g., MAC, RRC, SCI (sidelink control information), device-to-device signaling control information, etc.) from another device. In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device.

[0042] In the present disclosure, a 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 the present 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 with 6G wireless technology and applied to various 6G systems. For example, 6G systems can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) 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 device-to-device communication procedure 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, a first device and a second device can perform synchronization. For example, the first device can be a terminal and / or at least one of the devices proposed in the present disclosure. For example, the second device can 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 can perform an initial cell search operation. For example, the first device can detect at least one synchronization signal transmitted by the second device according to a predefined rule. Here, for example, the synchronization signal can include a plurality of synchronization signals classified according to a structure or purpose (e.g., a primary synchronization signal, a secondary synchronization signal, etc.). 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., a cell identifier).

[0047] In step S103, the first device can obtain system information transmitted by the second device. For example, the system information may include information related to the properties, characteristics, and / or capabilities of the second device required 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 system information before receiving the system information. For example, the request and provision of system information may be performed after a random access procedure described below.

[0048] In step S105, the first device and the second device can perform a random access procedure. For example, the first device can transmit and / or receive at least one message (e.g., a random access preamble, a random access response message, etc.) for the random access procedure based on information related to a 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 can transmit a preamble (e.g., Msg1) through the random access channel, the first device can receive a random access response message (e.g., Msg2), the first device can transmit a message (e.g., Msg3) including 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 can receive a message (e.g., Msg4) for contention resolution and / or connection establishment. For example, Msg1 and Msg3 can be sent and received as one message (e.g., MsgA), and / or Msg2 and Msg4 can be sent and received as one 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 that controls a connection (e.g., a radio resource control (RRC) layer), a layer that handles mapping between logical channels and transport channels (e.g., a media access control (MAC) layer), a layer that handles physical channels (e.g., a physical (PHY) layer), etc. For example, the first device and the second device may perform at least one of signaling for establishing a connection, signaling for determining settings related to communication, and / or signaling for indicating allocated resources. For example, the control information may be signaled / transmitted via 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, transmit, and / or receive data based on signaling of control information. 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, waveform demodulation for each antenna, signal arrangement considering layer mapping, constellation demapping, descrambling, and / or channel decoding.

[0051] For example, the layers of a radio interface protocol between a first device and a second device can be divided into L1 (layer 1), L2 (layer 2), L3 (layer 3), etc. For example, a physical layer belonging to the first layer can provide an information transfer service using a physical channel, and an RRC (radio resource control) layer located in the third layer can play a role in controlling radio resources between the first device and the second device. For this purpose, 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 an embodiment of the present disclosure. The embodiment of FIG. 2 can be combined with various embodiments of the present disclosure. For example, (a) of FIG. 2 may illustrate a radio protocol stack of a user plane for uplink communication or downlink communication, and (b) of FIG. 2 may illustrate a radio protocol stack of a control plane for uplink communication or downlink communication. For example, (c) of FIG. 2 may illustrate a radio protocol stack of a user plane for device-to-device communication, and (d) of FIG. 2 may illustrate a radio protocol stack of a control plane for device-to-device communication.

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

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

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

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

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

[0058] For example, establishing an RB can refer to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. For example, RBs can be divided into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). For example, SRBs can be used as a channel to transmit RRC messages in the control plane, while DRBs 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) for transmitting system information, and / or a downlink shared channel (SCH) for transmitting user traffic or control messages. For example, traffic or control messages of a downlink multicast or broadcast service may be transmitted through the downlink SCH, or may be transmitted through a separate downlink multicast channel (MCH). Meanwhile, an uplink transmission channel may include at least one of a random access channel (RACH) for transmitting an initial control message, and / or an uplink shared channel (SCH) for transmitting user traffic or control messages. For example, a logical channel located above a 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 illustrates the structure of a wireless frame according to an 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, a radio frame 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 include 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 according to a subcarrier spacing (SCS). For example, each slot may include 12 or 14 OFDM (A) symbols, depending on a cyclic prefix (CP).

[0062] For example, when normal CP is used, each slot can contain 14 symbols. For example, when extended CP is used, each slot can contain 12 symbols. Here, for example, the symbols can contain OFDM symbols (or CP-OFDM symbols), 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) depending on 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 ) is an example.

[0064] CP type SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot Normal CP15kHz (u=0)1410130kHz (u=1)1420260kHz (u=2)14404120kHz (u=3)14808240kHz (u=4)1416016Extended CP60kHz (u=2)12404

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

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

[0067] FIG. 4 illustrates a slot structure of a frame according to an 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 one numerology (e.g., SCS, CP length, etc.). For example, a carrier may include at most N BWPs (where N is a positive integer). For example, data communication may be performed through an activated BWP. For example, each element may be referred to as a resource element (RE) in the resource grid, and one complex symbol may be mapped to it.

[0069] For example, a BWP may be a contiguous set of PRBs in a given numerology. For example, a PRB may be selected from a contiguous 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 UE may not monitor the downlink radio link quality in a DL BWP other than the active DL BWP on the PCell (primary cell). For example, the UE may not receive a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), or a channel state information-reference signal (CSI-RS) (except for radio resource management (RRM)) outside of the active DL BWP. For example, the UE may not trigger channel state information (CSI) reporting for an inactive DL BWP. For example, the UE may not transmit a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) outside of the active UL BWP. For example, for downlink, the initial BWP can be given as a set of consecutive resource blocks (RBs) for the remaining minimum system information (RMSI) CORESET (control resource set) (set by the physical broadcast channel (PBCH)). For uplink, for example, 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 a higher layer. For example, the initial value of the default BWP can be the initial DL BWP.For energy saving, if a terminal does not detect DCI (downlink control information) for a certain period of time, the terminal may switch its active BWP to a default BWP.

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

[0072] In the present disclosure, PUCCH may be replaced by a control channel, a physical control channel, an uplink-related control channel, an uplink-related physical control channel, 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 shared channel (e.g., PUSCH) may be replaced by a shared channel, a physical shared channel, an uplink-related shared channel, an uplink-related physical shared channel, a device-to-base station physical shared channel, a terminal-to-base station physical shared channel, etc. For example, UL communication may be replaced by 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 part may be replaced by "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 by a control channel, a physical control channel, a downlink-related control channel, a downlink-related physical control channel, 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 shared channel (e.g., PDSCH) may be replaced by a shared channel, a physical shared channel, a downlink-related shared channel, a downlink-related physical shared channel, a base station-to-device physical shared channel, a base station-to-terminal physical shared channel, etc. For example, DL communication may be replaced by base station-to-device communication or base station-to-terminal communication. For example, the DL part in terms referring to various channels and / or signals related to DL communication may be replaced by "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 can 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 carrier resource block numbered from one end of a 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 a resource block grid.

[0076] For example, BWP is point A, offset from point A (N start BWP ) and bandwidth (N size BWP) can be set by. For example, point A can be an outer reference point of the PRB of a carrier where subcarrier 0 of all numerologies (e.g., all numerologies supported by the network on that carrier) aligns. For example, the offset can be the PRB spacing between the lowest subcarrier in a given numerology and point A. For example, the bandwidth can 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 an 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 of the 6G system, technologies such as artificial intelligence (AI), THz (terahertz) communication, optical wireless technology, free-space optical transmission (FSO) backhaul networks, massive 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: Incorporating AI into communications can streamline and improve real-time data transmission. AI can use numerous analytics to determine how complex target tasks should be performed. For example, AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a crucial role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. AI can also facilitate rapid communication in brain-computer interfaces (BCIs). 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 (terahertz communication): Data rates can be increased by increasing the bandwidth. This can be achieved by using sub-THz communication with wide bandwidths and applying advanced massive MIMO technology. THz waves, also known as sub-millimeter waves, typically refer to the frequency range between 0.1 THz and 10 THz, with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz to 300 GHz band (sub-THz band) is considered a key part of the THz spectrum for cellular communications. Adding the sub-THz band to the mmWave band will increase the capacity of 6G cellular communications. Among the defined THz bands, 300 GHz to 3 THz lies in the far infrared (IR) frequency band. While part of the optical band, the 300 GHz to 3 THz band lies at the boundary of the optical band, immediately following the RF band. Therefore, this 300 GHz to 3 THz band exhibits similarities to RF. Key characteristics of THz communications include (i) the widely available bandwidth to support very high data rates and (ii) the high path loss that occurs at high frequencies (requiring highly directional antennas). The narrow beamwidths generated by highly directional antennas reduce interference. The small wavelength of THz signals allows for a significantly larger number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array technologies to 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 surface

[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 can include UAM, RAM, UAS, and uncrewed aerial vehicles (UAVs).

[0095] - Autonomous driving (self-driving): V2X (vehicle to everything), a key element in building autonomous driving infrastructure, can be a technology that allows cars to communicate and share with various elements on the road for autonomous driving, such as vehicle to vehicle (V2V) wireless communication and vehicle to infrastructure (V2I) wireless communication.

[0096] Non-terrestrial network (NTN): NTN can refer to a network or network segment that utilizes radio frequency (RF) resources mounted on satellites (or UAS platforms). NTN services may be considered to secure wider coverage or 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): RIS can be used to manipulate and enhance signal propagation in wireless communication environments. For example, a 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 example, a RIS can improve signal reception by controlling the path, phase, and / or intensity of the propagating signal. For example, in the case of a RIS, power consumption can be very low because power is consumed only for controlling the phase and amplitude of the small antennas. For example, because a RIS can be reconfigured to suit different 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 may be combined with various embodiments of the present disclosure.

[0100] Referring to FIG. 7, NTN communication can be performed based on satellite networks, high-altitude platform stations (HAPS) as international mobile telecommunications (IMT) base stations (BS), and terminals capable of aerial communication (e.g., AAMs). For example, to improve coverage, etc., devices such as satellite networks, HIBS, and terminals capable of aerial communication (e.g., AAMs) 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 the beam width becomes narrower in high-frequency bands, requiring more beam sweeps to cover the entire cell area. This method of transmitting system information can be even more inefficient, especially when there are only a few users within the cell. Accordingly, a system information transmission procedure, such as that illustrated in FIG. 8 , may be employed.

[0102] FIG. 8 illustrates a procedure for transmitting system information for THz communication according to an 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 developed with THz in mind, but is also applicable to 6G communication environments where THz is not applicable. Furthermore, 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 acquired through the procedure illustrated in FIG. 8.

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

[0105] In step S803, the terminal (810) can acquire synchronization for cell #1. Synchronization can be acquired by detecting a synchronization signal. Typically, synchronization is acquired before receiving system information. However, since the system information for cell #1 is received from cell #2, synchronization acquisition for cell #1 can be performed after receiving the system information. For example, the terminal (810) can acquire synchronization based on the system information. However, unlike FIG. 8, according to another example, synchronization acquisition can be performed before step S801.

[0106] In step S805, the terminal (810) may transmit a signal for accessing cell #1. For example, the signal may include a random access preamble. The structure of the signal and the resources (e.g., channels) for transmitting the signal may be identified through system information. Subsequently, in step S807, the terminal (810) and the base station (820) may perform an access procedure for cell #1 and communicate. 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) hands over to cell #1 of the base station (820). However, in the case of handover, the system information of cell #1 may be received from a cell of a base station other than cell #2 of the base station (820).

[0108] Below, a low power wake-up signal / receiver is described.

[0109] 5G systems are designed and developed for both mobile telephony and vertical use cases. In addition to latency, reliability, and availability, terminal energy efficiency may also be critical in 5G. Currently, 5G devices may require recharging weekly or even daily, depending on individual usage. Typically, 5G devices consume tens of milliwatts in RRC idle / inactive states and hundreds of milliwatts in RRC connected states. Designing for extended battery life may be essential for improving energy efficiency and enhancing the user experience.

[0110] Energy efficiency can be even more important for devices without a continuous energy source, such as those powered by small rechargeable or single coin-cell batteries. Among vertical use cases, sensors and actuators can be widely used for monitoring, measurement, and charging. Typically, these batteries are non-rechargeable and can be expected to last at least several years, as described in the technical literature. Wearable devices include smartwatches, rings, eHealth devices, and medical monitoring devices. Typical battery capacities can struggle to last beyond the required one to two weeks.

[0111] Power consumption may vary depending on the length of the configured wake-up period, such as the paging cycle. To meet the above battery life requirements, a large number of extended discontinuous reception (e.g., eDRX) cycles are expected to be used, which will result in a long latency, which may not be suitable for services that require both long battery life and low latency. For example, in a fire detection and extinguishing use case, the fire shutters should close and the sprinklers should be activated by the actuator within 1-2 seconds after the sensor detects a fire. A long extended discontinuous reception (e.g., eDRX) cycle cannot meet the latency requirements, so extended discontinuous reception (e.g., eDRX) may not be suitable for latency-critical use cases.

[0112] Currently, terminals must wake up periodically during discontinuous reception (e.g., DRX) cycles, which can lead to a significant power consumption during periods of no signal or data traffic. If terminals could wake up only when triggered, such as by paging, power consumption could be drastically reduced. This could be achieved by using a separate receiver that uses a wake-up signal to trigger the main radio and monitors 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 maximum power-saving mode when not powered on.

[0113] The following terms may be used in this document:

[0114] - Main Radio (MR): Transmit / receive module that operates for NR signals / channels except for low-power weather-related signals / channels.

[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 cases including industrial wireless sensors, controllers, actuators, etc.

[0118] - Examples of wearable devices such as smart watches, rings, e-health devices, and medical monitoring devices.

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

[0120] Below, technologies related to low power weather signals / weather radios (e.g., LP-WUS / WUR) are described.

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

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

[0123] - Provides analysis of receiver architecture, power consumption, noise figures, etc. for low-power weather receivers.

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

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

[0126] - Related upper-level influences

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

[0128] In RRC connected mode, it was observed that triggering base station-to-device physical control channel (e.g., PDCCH) monitoring of the UE's main radio (e.g., MR) using a low-power weather signal / weather radio (e.g., LP-WUS / WUR) can achieve moderate UE power saving gains (up to 10% or more) with minimal capacity impact compared to existing UE power saving techniques under various types of XR traffic and system load scenarios. Furthermore, it was observed that significant UE power saving gains (up to 60% or more) and moderate UPT improvement (up to 10% or more) can be achieved for FTP and IM traffic when the UE's main radio (e.g., MR) transitions to the deep sleep state during NR low-power weather signal (e.g., LP-WUS) monitoring. Furthermore, a recent study validated the feasibility of offloading cell RRM measurements from the UE's main radio (e.g., MR) to a low-power weather receiver (e.g., LP-WUR) through a reasonable evaluation methodology. Additionally, several issues were identified at the upper level that could be further discussed at the WI stage.

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

[0130] In 5G NR, if a terminal does not have ongoing data transmissions / receptions, the terminal may enter RRC_IDLE or RRC_INACTIVE mode to save power. When base station-to-terminal data (e.g., DL data) for the terminal arrives in 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 base station-to-terminal physical control channel (e.g., physical downlink control channel (PDCCH) monitoring occasions, which may consist of multiple time slots (e.g., subframes or OFDM symbols), and base station-to-terminal control information (e.g., downlink control information (DCI)) with a CRC scrambled with a P-RNTI may be transmitted at the paging occasion (e.g., PO). By means of a base station-to-terminal control information (e.g., DCI) format (e.g., DCI format 1_0) with a CRC scrambled with P-RNTI, the following information may be transmitted, for example:

[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 method

[0137] - Transport Block (TB) scaling

[0138] - Tracking reference signal (TRS) availability indication

[0139] - Reserved bits.

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

[0141] BitShortMessage1If set to systemInfoModification1: Indication of Broadcast Control Channel (BCCH) modification other than SIB6, SIB7 and SIB82If set to etwsAndCmasIndication1: Indication of Earthquake and Tsunami Warning System (ETWS) Primary Notification and / or ETWS Secondary Notification and / or Commercial Mobile Alert Service (CMAS) Notification3stopPagingMonitoringThis bit is available only in case of shared spectrum channel access and if the RRC parameter nrofPDCCH-MonitoringOccasionPerSSB-InPO is present. If set to 1: Indication that the UE may stop monitoring the eNB-to-UE Physical Control Channel (e.g., PDCCH) occasion(s) for paging as specified in the technical literature4If set to systemInfoModification-eDRX1: Indication of BCCH modification other than SIB6, SIB7 and SIB8. This instruction is applicable only to terminals using extended discontinuous reception (e.g., eDRX) cycles that are longer than the broadcast control channel (e.g., BCCH) modification cycle. 5 - 8 It is not used in the current technical literature and is ignored when received by the terminal.

[0142] Bit fields mapped to indices 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 a 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.) in 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, a paging group list, a terminal identifier associated with the paging record, an access type associated with the paging record, a paging cause associated with the paging record, a TMSI associated with the paging terminal identifier, an RNTI associated with the paging terminal identifier, etc.

[0144] The following table illustrates a paging message and a description of the fields within the paging message.

[0145] Paging Record Field Descriptions Access Type (accessType) May indicate whether the paging message originated from a PDU session from a non-3GPP access. Paging Record List (pagingRecordList) If the network includes pagingRecordList-v1700, it will contain the same number of entries and will be listed in the same order as pagingRecordList (i.e., without a suffix). Paging Reason (pagingCause) Indicates whether the paging message originated from IMS voice. If this field is present, it may mean that the paging entry is for IMS voice. If the upper layer supports paging reason 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 have been determined.

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

[0147] A paging frame (PF) is a radio frame and may contain one or more paging occasions (e.g., POs) or a starting point of a paging occasion (e.g., PO).

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

[0149] For example, in some implementations, a 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), an index i_s indicating an index of a paging occasion (e.g., PO) may be determined by i_s = floor(UE_ID) mod Ns, where T is a discontinuous reception (e.g., DRX) cycle of the UE determined by the minimum value of UE-specific discontinuous reception (e.g., DRX) value(s) and / or a 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 occasions for a paging frame (e.g., PF), PF_offset is an offset used for paging frame (e.g., PF) determination, and UE_ID may be a value determined based on 5G-S-TMSI. there is.

[0150] For example, a parameter Ns regarding the number of paging occasions per paging frame, a parameter nAndPagingFrameOffset used to derive the total number of paging frames in T, a parameter nrofPDCCH-MonitoringOccasionsPerSSB-InPO regarding the number of base station-to-terminal physical control channel (e.g., PDCCH) monitoring occasions corresponding to SSBs within a paging occasion, and a length of a 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 parameter nAndPagingFrameOffset.

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

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

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

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

[0155] For example, if one paging early indication time (e.g., PEI-O) is associated with the paging times (e.g., PO) of two paging frames (e.g., PF), the two paging frames (e.g., PF) may be consecutive paging frames (e.g., PF) calculated by the parameters PF_offset, T, Ns, and N. Further details on paging early indication (e.g., PEI) can be found in 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 in RRC_IDLE or RRC_INACTIVE is only required to monitor paging channels during one paging period (e.g., PO) per discontinuous reception (e.g., DRX) cycle. For example, the following paging discontinuous reception (e.g., DRX) cycles may be configured by the network:

[0157] i) For CN-initiated paging, the default cycle is broadcast as system information,

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

[0159] iii) A terminal-specific cycle can be established via RRC signaling for radio access network (RAN)-initiated paging.

[0160] For example, a terminal may use the shortest of the applicable discontinuous reception (e.g., DRX) cycles. For example, a terminal in 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 in RRC_INACTIVE may use the shortest of the three discontinuous reception (e.g., DRX) cycles.

[0161] Below, the terminal operation sequence diagram and signaling operation between the base station and the terminal are described.

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

[0163] Referring to (a) of FIG. 9, a flowchart illustrating a process by which a terminal performs terminal-to-base station data transmission is illustrated. 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 information for terminal-to-base station channel transmission. Subsequently, for example, the terminal may transmit terminal-to-base station data / channel.

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

[0165] Referring to (b) of FIG. 9, a flowchart illustrating a process by which a terminal performs base station-to-terminal data reception is illustrated. For example, the terminal may receive base station-to-terminal data / channel related information. Subsequently, the terminal may receive base station-to-terminal control information for base station-to-terminal data reception, or 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 indicated data / channels have been received, and if not all have been received, perform base station-to-terminal data / channel reception (again and / or additionally).

[0167] For example, if all indicated data / channels have been received, the terminal can decide whether feedback transmission is required, and if no feedback transmission is required, the procedure can be terminated.

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

[0169] FIG. 9 is merely for convenience of explanation 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.

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

[0171] Referring to (a) of FIG. 10, a flowchart illustrating a process by which a base station performs terminal-to-base station data reception is illustrated. 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 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 time, for example, the base station can check whether all the indicated data / channels have been received, and if not all have been received, perform (re- and / or additionally) terminal-to-base station data / channel reception. If all have been received, the above procedure can be terminated.

[0173] Referring to (b) of FIG. 10, a flowchart illustrating a process by which a base station performs base station-to-terminal data transmission is illustrated. 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 base station-to-terminal data reception, or information for base station-to-terminal channel reception. 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 indicated data / channels have been transmitted, and if not all have been transmitted, perform base station-to-terminal data / channel transmission (again and / or additionally).

[0175] For example, if all indicated data / channels have been transmitted, the base station can determine whether feedback reception is required, and if no feedback reception is required, the procedure can be terminated.

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

[0177] FIG. 10 is merely for convenience of explanation 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 channel / 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 (a) of FIG. 11, the base station may transmit terminal-to-base station data / channel related information to the terminal. Thereafter, the base station may 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. Thereafter, the terminal may transmit terminal-to-base station data / channel to the base station.

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

[0181] FIG. 11 is merely for convenience of explanation 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.

[0182] In mobile communication systems, terminals typically include subscriber identification information (SIM, USIM, etc.) for user authentication, as well as a unique device identifier (e.g., International Mobile Equipment Identity (IMEI)) for device identification. A mobile equipment identifier (e.g., IMEI) consists of a 15-digit number that is internationally defined and can indicate unique information about the terminal device, such as the manufacturer, model, and serial number.

[0183] When a terminal attempts to connect to the network, mobile communication networks receive a mobile equipment identifier (e.g., IMEI) value, which can be used to determine whether the device is authorized, reported stolen, or has restricted network access. This device authentication process based on mobile equipment identifiers (e.g., IMEI) can enhance communication security and contribute to preventing the distribution of pirated devices.

[0184] The mobile equipment identifier (e.g., IMEI) is typically stored in the modem or baseband processor of the terminal, and can be transmitted (via non-access layer (e.g., NAS) signaling) for the purpose of identifying the terminal during the RRC connection setup process or non-access layer (e.g., NAS) signaling. In particular, the base station (RAN) does not directly interpret the mobile equipment identifier (e.g., IMEI) information, but rather passes it to the core network via the RAN, where it can be utilized for procedures such as equipment integrity verification.

[0185] Meanwhile, some telecommunications carriers maintain an Equipment Identity Register (EIR) database, enabling them to apply network access control policies based on mobile equipment identifier (e.g., IMEI) information. Thus, mobile equipment identifiers (e.g., IMEI) can serve as a key element in ensuring device uniqueness, controlling network access, and blocking stolen devices.

[0186] The symbols / abbreviations / terms used in this disclosure are as follows.

[0187] ACS(Adjacent Channel Selectivity): Adjacent Channel Selectivity

[0188] ADC(Analog to Digital Converter): Analog-to-digital converter

[0189] ASCS(Adjacent Subcarrier selectivity): Adjacent Subcarrier Selectivity

[0190] ASK(Amplitude Shift Keying): Amplitude Shift Keying

[0191] BB(Base Band): Basic Band

[0192] BLER(Block Error Rate): Block Error Rate

[0193] BPF(Band Pass Filter): Base Pass Filter

[0194] BWP(Bandwidth part): Partial bandwidth

[0195] CAP(Channel Access Procedure): Channel Access Procedure

[0196] CFO(Center frequency offset): Center frequency offset

[0197] CORESET(Control resource set): Control resource set

[0198] CRC(Cyclic redundancy check): Cyclic redundancy check

[0199] CP-OFDMA (Cyclic Prefix-Orthogonal Frequency-Division Multiple Access): Cyclic Prefix-Orthogonal Frequency-Division Multiple Access

[0200] CSI (Channel state information): Channel state information

[0201] DCI (Downlink Control Information): Base station-to-terminal control information

[0202] DCP (DCI with CRC scrambled by PS-RNTI): Base station-to-terminal control information scrambled with PS-RNTI

[0203] DRX (Discontinuous Reception): Discontinuous Reception

[0204] DFT-S-OFDMA (Discrete Fourier Transform-Spread-Orthogonal Frequency-Division Multiple Access): Discrete Fourier Transform-Spread-Orthogonal Frequency-Division Multiple Access

[0205] eDRX (Extended DRX): Extended Discontinuous Reception

[0206] EPRE (Energy Per Resource Element): Energy per resource element

[0207] FAR(False Alarm Rate): False Alarm Rate

[0208] FCS (Frame Check Sequence): Frame Check Sequence

[0209] FSK(Frequency Shift Keying): Frequency Shift Keying

[0210] FLL(Frequency Locked Loop): Frequency Locked Loop

[0211] FFT(Fast Fourier Transform): Fast Fourier Transform

[0212] FR1(Frequency range 1): Frequency range 1

[0213] FR2(Frequency range 2): Frequency range 2

[0214] ICS(In-channel Selectivity): In-channel selectivity

[0215] IF(Intermediate Frequency): Intermediate Frequency

[0216] LP-WUS (Low Power-Wake Up Signal): Low Power Wake Up Signal

[0217] LP-WUR (Low Power-Wake Up Receiver): Low Power Wake Up Receiver

[0218] LP-SS (Low Power-Synchronization Signal): Low-power synchronization signal

[0219] LNA(Low Noise Amplifier): Low Noise Amplifier

[0220] LPF(Low Pass Filter): Low-pass filter

[0221] LR(LP-WUR): Low Power Weather Receiver

[0222] MDR (Miss Detection Rate): Miss Detection Rate

[0223] MC-ASK (Multiple Carrier-Amplitude Shift Keying): Multicarrier-Amplitude Shift Keying

[0224] MC-FSK (Multiple Carrier-Frequency Shift Keying): Multi-carrier-frequency shift keying

[0225] MR(Main Radio): Main Radio

[0226] NF(Noise Figure): Noise Figure

[0227] OOK(On-Off keying): On / Off keying

[0228] OFDM (Orthogonal Frequency Division Multiplexing): Orthogonal Frequency Division Multiplexing

[0229] PDCCH (Physical Downlink Control Channel): Base station-to-terminal physical control channel

[0230] PUCCH (Physical Uplink Control Channel): Terminal-to-base station physical control channel

[0231] PUSCH (Physical Uplink Shared Channel): Terminal-to-base station physical shared channel

[0232] PDSCH (Physical Downlink Shared Channel): Base station-to-terminal physical shared channel

[0233] PRACH (Physical Random-Access Channel): Physical Random Access Channel

[0234] PEI (Paging Early Indication): Paging Early Indication

[0235] PO(Paging Occasion): Paging Occasion

[0236] PTW(Paging Time Window): Paging Time Window

[0237] PLL(Phase Locked Loop): Phase Locked Loop

[0238] PAPR (Peak to Average Power Ratio): Maximum average power ratio

[0239] RRC (Radio Resource Control): Radio Resource Control

[0240] RRM (Radio Resource Management): Radio Resource Management

[0241] RLM (Radio Link Monitoring): Wireless Link Monitoring

[0242] RS(Reference Signal): Reference signal

[0243] RSRP(Reference Signal Received Power): Reference signal received power

[0244] RSRQ (Reference Signal Received Quality): Reference signal received quality

[0245] RTC(Real Time Clock): Real Time Clock

[0246] RF(Radio Frequency): Radio Frequency

[0247] SCS(Sub-carrier spacing): Subcarrier spacing

[0248] SSB(Synchronization Signal Block): Synchronization Signal Block

[0249] SSSG(Search Space Set Group): Search Space Set Group

[0250] SINR(Signal to Interference plus Noise Ratio): Signal to Interference plus Noise Ratio

[0251] SNR(Signal to Noise Ratio): Signal to Noise Ratio

[0252] SC(Subcarrier): Subcarrier

[0253] TBS(Transport Block Size): Transport Block Size

[0254] TDRA (Time Domain Resource Allocation): Time Domain Resource Allocation

[0255] Ucell (Unlicensed cell): Unlicensed cell

[0256] UE(User Equipment): terminal

[0257] XR(Extended reality): extended reality

[0258] TAG(Timing advance group): Timing advance group

[0259] AmIoT (Ambient Internet of Things): Ambient Internet of Things

[0260] CW (Carrier Wave): Carrier wave

[0261] BSC (Backscattering): Backscattering

[0262] BSS(Backscattered signal): Backscattered signal

[0263] SIC(Self-Interference Cancellation): Self-Interference Cancellation

[0264] RFID(Radio Frequency Identifier): Radio Frequency Identifier

[0265] IN(Intermediate Node): Intermediate node

[0266] SLIV (Starting and Length Indicator Value): A starting and length indicator value. This is an indication 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), and may be set as a component of an entry configuring a time domain resource allocation (e.g., TDRA) field within a base station-to-terminal physical control channel (e.g., PDCCH) that schedules the base station-to-terminal physical shared channel (e.g., PDSCH) and / or the terminal-to-base station physical shared channel (e.g., PUSCH).

[0267] BWP (BandWidth Part): Partial bandwidth. It can be composed of consecutive resource blocks (RBs) on the frequency axis and can correspond to a single numerology (e.g., subcarrier spacing, cyclic prefix (e.g., CP) length, slot / mini-slot duration). In addition, multiple partial bandwidths (e.g., BWPs) can be configured on a single carrier (the number of partial bandwidths (e.g., BWPs) per carrier can also be limited), but the number of activated partial bandwidths (e.g., BWPs) can be limited to a portion (e.g., 1) per carrier.

[0268] CORESET (COntrol REsourse SET): Control resource set. This refers to the time-frequency resource region in which base station-to-terminal physical control channels (e.g., PDCCH) can be transmitted. The number of control resource sets (e.g., CORESET) per partial carrier (e.g., BWP) may be limited.

[0269] REG(Resource element group): Resource element group

[0270] SFI (Slot Format Indicator): Slot Format Indicator. This indicator indicates the symbol-level base station-to-terminal / terminal-to-base station direction within a specific slot(s). It can be transmitted through a common base station-to-terminal physical control channel (e.g., PDCCH) within the group.

[0271] COT(Channel occupancy time): Channel occupancy time

[0272] SPS (Semi-persistent scheduling): semi-persistent scheduling

[0273] QCL(Quasi-Co-Location): Quasi-co-location. A quasi-co-location (e.g., QCL) relationship between two reference signals can mean that quasi-co-location (e.g., QCL) parameters such as Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters obtained from one reference signal can also be applied to the other reference signal (or antenna port(s) of the reference signal). 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 for a pseudo-co-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 for a pseudo-co-location (e.g., QCL) type Y (Y=A, B, C, or D, but X≠Y).

[0274] TCI (Transmission Configuration Indication): A transmission configuration indicator. A TCI state includes a pseudo-co-location (e.g., QCL) relationship between one or more base station-to-terminal reference signals (e.g., DL RS) and a decoding reference signal (e.g., DM-RS) port of a base station-to-terminal physical shared channel (e.g., PDSCH), a decoding reference signal (e.g., DM-RS) port of a base station-to-terminal physical control channel (e.g., PDCCH), or a channel state information reference signal (e.g., CSI-RS) port(s) of a channel state information reference signal (e.g., CSI-RS) resource. For the transmission configuration indicator among the fields in the base station-to-terminal control information (e.g., DCI) that schedules the base station-to-terminal physical shared channel (e.g., PDSCH), the transmission configuration indicator (e.g., TCI) state index corresponding to each code point constituting the field is activated by the MAC CE, and the transmission configuration indicator (e.g., TCI) state setting for each transmission configuration indicator (e.g., TCI) state index can be set through RRC signaling. In the NR system, the transmission configuration indicator (e.g., TCI) state is set between the base station-to-terminal reference signal (e.g., DL RS), but in the future, 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. For example, as examples of terminal-to-base station reference signals (e.g., UL RS), there may be 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), etc.

[0275] SRI (SRS resource indicator): Sounding reference signal (e.g., SRS) resource indicator. One of the sounding reference signal (e.g., SRS) resource index values ​​set in the sounding reference signal (e.g., SRS) resource indicator among the fields in the base station-to-terminal control information (e.g., DCI) that schedules a terminal-to-base station physical shared channel (e.g., PUSCH) 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 transmitting and receiving a reference signal linked to the corresponding sounding reference signal (e.g., SRS) resource. At this time, a reference reference signal (eg, RS) is set by RRC signaling through the SRS-SpatialRelationInfo parameter for each sounding reference signal (eg, SRS) resource, and a synchronization signal / physical broadcast channel (eg, SS / PBCH) block, a channel state reference signal (eg, CSI-RS), or a sounding reference signal (eg, SRS) can be set as the reference reference signal (eg, RS).

[0276] LO (LP-WUS occasion): A low-power weather signal opportunity. For example, it may consist of one or more LP-WUS monitoring opportunities.

[0277] LMO: LP-WUS Monitoring Opportunity

[0278] For example, in the present disclosure, receiving a low-power weather signal monitoring time (e.g., LMO) may mean receiving a low-power weather signal (e.g., LP-WUS) at the low-power weather signal monitoring time (e.g., LMO). For example, in the present disclosure, receiving a low-power weather signal time (e.g., LO) may mean receiving a low-power weather signal (e.g., LP-WUS) at the low-power weather signal time (e.g., LO). For example, in the present disclosure, receiving a paging time (e.g., PO) may mean receiving a paging message at the paging time (e.g., PO).

[0279] In various embodiments of the present disclosure, a method is described for configuring a plurality of low-power weather signal monitoring occasions (e.g., LP-WUS MO; LP-WUS monitoring occasions) to be configured within a low-power weather signal occasion (e.g., LO; LP-WUS occasion) when a low-power wake-up signal (e.g., LP-WUS) is transmitted, thereby improving the reception performance of the low-power weather signal (e.g., LP-WUS).

[0280] To reduce power consumption through low-power weather signals (e.g., LP-WUS), it may be important to minimize situations where terminals that the base station does not want to wake up (e.g., false alarms) and to transmit reliable low-power weather signals (e.g., LP-WUS). If the reception performance of low-power weather signals (e.g., LP-WUS) transmissions is improved, a lower false alarm rate (probability) can be secured by including longer terminal identifiers or terminal group identifiers in the same radio resources, and the coverage of low-power weather signals (e.g., LP-WUS) can be improved, thereby reducing power consumption of the entire system.

[0281] Accordingly, the present disclosure proposes a method for improving reception performance and coverage of a low-power weather signal (e.g., LP-WUS) and reducing power consumption of the entire system by repeatedly transmitting the low-power weather signal (e.g., LP-WUS) and allowing a terminal to receive the same.

[0282] According to one embodiment of the present disclosure, a method is proposed in which a low power wake-up signal (LP-WUS) is repeatedly transmitted and a terminal is instructed to receive the same.

[0283] In the following disclosure, examples are given based on the NR system to explain the principles of the disclosure, but the proposed methods are not specifically limited to the transmission and reception form of NR unless otherwise specified. In addition, in the following disclosure, examples are given based on the characteristics and structure of a discontinuous reception (e.g., DRX) terminal to explain the principles of the disclosure, but the proposed methods are not specifically limited to the support of a discontinuous reception (e.g., DRX) terminal unless otherwise specified. Therefore, it is self-evident 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 the disclosure are not violated even without a separate description.

[0284] The distinction between each method or option in the following description is intended for clarity and is not to be construed as necessarily requiring each method or option to be implemented independently. For example, while the methods / options described below may be implemented individually, at least some of them may be implemented in combination, provided they do not conflict with each other.

[0285] According to various embodiments of the present disclosure, the reception time of a low-power weather signal (e.g., LP-WUS) may be separately described in each of the proposed methods below or may be determined based on system information transmitted by the base station. For example, if a low-power weather signal (e.g., LP-WUS) can be received as 1-bit information in one unit (e.g., 1 slot or 1 symbol) through on / off keying, an offset value and a period on a system frame may simply be set, and if decrypted information is received through multiple on / off keyings for reliability, or if 2 or more bit information is received, based on this, a time period during which a terminal receives a low-power weather signal (e.g., LP-WUS) and a terminal ID for a low-power weather signal receiver (e.g., LP-WUR) for verification after receiving a low-power weather signal (e.g., LP-WUS) may be determined similarly to a paging early indication (e.g., PEI). For example, in this case, a terminal ID used for conventional paging reception may be reused.

[0286] According to one embodiment of the present disclosure, a method may be considered in which a terminal derives a reception location of a low-power weather signal (e.g., LP-WUS) through a terminal ID given to the terminal for receiving a low-power weather signal (e.g., LP-WUS). For example, the low-power weather signal (e.g., LP-WUS) may be repeated in short cycles, and a base station may provide the terminal with the number of low-power weather signal (e.g., LP-WUS) subgroup parameters. This means the number of low-power weather signal monitoring periods (e.g., LP-WUS MO) required for one terminal subgroup, and in other words, the low-power weather signal (e.g., LP-WUS) for one terminal subgroup may be repeated at each low-power weather signal monitoring period (e.g., LP-WUS MO).

[0287] For example, a terminal can distinguish a low-power weather signal monitoring period (e.g., LP-WUS MO) to be monitored among a number of monitoring periods (e.g., MO) corresponding to the number of low-power weather signal (e.g., LP-WUS) subgroups through a terminal ID given to the terminal. In addition, for example, when K (K>2) bits of information are received through the monitoring of the low-power weather signal (e.g., LP-WUS), the reception of the low-power weather signal (e.g., LP-WUS) can also be distinguished through the terminal ID.

[0288] 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 occasions; 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 occasion (e.g., LP-WUS MO) within a low-power weather signal occasion (e.g., LO) with a beam or reference signal given from a base station or defined in advance, and ensuring that the same information is always transmitted in the low-power weather signal monitoring occasion (e.g., LP-WUS MO) within the low-power weather signal occasion (e.g., LO), thereby allowing the terminal to select and receive the best low-power weather signal monitoring occasion (e.g., LP-WUS MO) from the reference signal, or by combining signals received in each low-power weather signal monitoring occasion (e.g., LP-WUS MO).

[0289] For example, the number of low-power weather signal monitoring periods (e.g., LP-WUS MO) within a low-power weather signal period (e.g., LO) can be directly set via a message such as SIB from the base station.

[0290] Alternatively, for example, it may be derived from the number of transmissions per cycle of a reference signal, etc., that may be associated with each low-power weather signal monitoring period (e.g., LP-WUS MO) (i.e., the number of transmissions of the reference signal per cycle of a low-power weather signal period (e.g., LO), e.g., the number of transmissions of the reference signal between adjacent low-power weather signal periods (e.g., LO)). For example, if transmission of the reference signal is configured to occur K times between adjacent low-power weather signal periods (e.g., LO), the terminal may expect transmission of K low-power weather signal monitoring periods (e.g., LP-WUS MO) within a low-power weather signal period (e.g., LO).

[0291] Alternatively, for example, without an explicit correlation, the terminal may simply assume that each low-power weather signal monitoring occasion (e.g., LP-WUS MO) is a separate transmission. In the sequence of operations described above, the terminal may assume that the same information is provided through the low-power weather signal monitoring occasion (e.g., LP-WUS MO) within the low-power weather signal occasion (e.g., LO). For example, the following may additionally be considered in the low-power weather signal occasion (e.g., LO):

[0292] For example, in a given low-power weather signal period (e.g., LO), the terminal may perform all monitoring in the monitoring period (e.g., MO) within the low-power weather signal period (e.g., LO), or may perform monitoring only in a specific monitoring period (e.g., MO).

[0293] For example, the number of low-power weather signal monitoring periods (e.g., LP-WUS MO) within a low-power weather signal period (e.g., LO) may be different from the number of associated beams or reference signals. This may be due to the capacity of the low-power weather signal monitoring period (e.g., LP-WUS MO). In such cases, the terminal may consider the following cases.

[0294] (1) If the number X of low-power weather signal monitoring periods (e.g., LP-WUS MO) within a low-power weather signal period (e.g., LO) is greater than the number Y of associated beams or reference signals, the n-th low-power weather signal monitoring period (e.g., LP-WUS MO) can be assumed to be associated with the ((n-1) mod Y + 1)-th beam or transmitted reference signal.

[0295] (2) If the number X of low-power weather signal monitoring periods (e.g., LP-WUS MO) within a low-power weather signal period (e.g., LO) is less than the number Y of associated beams or reference signals,

[0296] 1) The first low-power weather signal monitoring occasion (e.g., LP-WUS MO) may be associated with the beam or reference signal of the 'number mod Y'th SFN containing the low-power weather signal monitoring occasion (e.g., LP-WUS MO). The nth low-power weather signal monitoring occasion (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 occasion (e.g., LP-WUS MO) is associated with the mth beam or reference signal.

[0297] 2) Alternatively, for example, the nth weather signal monitoring period (e.g., LP-WUS MO) may be associated with the nth beam or reference signal that has been set. For example, an ordered index may be set to the beam or reference signal for this purpose.

[0298] 3) Alternatively, for example, the first weather signal monitoring occasion (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 occasion (e.g., LO). The n-th weather signal monitoring occasion (e.g., LP-WUS MO) may be associated with a beam or reference signal transmitted before the beam or reference signal associated with the n-1-th low-power weather signal occasion (e.g., LO).

[0299] 4) Or, for example, the first weather signal monitoring period (e.g., LP-WUS MO) may be associated with the closest Xth beam or reference signal among the beams or reference signals transmitted before the start of the current low power weather signal period (e.g., LO).

[0300] [Method #1]

[0301] According to one embodiment of the present disclosure, a method for allocating a low-power weather signal period (e.g., LO) and a low-power weather signal monitoring period (e.g., LMO) for repeated transmission may be provided.

[0302] For example, as described above, a terminal receiving a low-power weather signal (e.g., LP-WUS) receives a low-power weather signal occasion (e.g., LO; LP-WUS Occasion) setting from the network, and the setting includes information necessary for the terminal to determine when to receive the low-power weather signal occasion (e.g., LO), and one low-power weather signal occasion (e.g., LO) may be composed of multiple weather signal monitoring occasions (e.g., LP-WUS MO).

[0303] For example, the point in time at which a terminal receives a low-power wake-up signal occasion (e.g., LO) may be determined based on the location of the paging occasion received by the terminal or may be set independently, and multiple terminal groups may share one low-power wake-up signal occasion (e.g., LO).

[0304] For example, the time at which a low-power weather signal period (e.g., LO) is received (e.g., the first low-power weather signal monitoring period (e.g., LMO) within a low-power weather signal period (e.g., LO)) can be determined as follows.

[0305] - The slot / symbol / frame derived using the terminal identifier (e.g., 5G-S-TMSI) that the terminal has or has set can be determined as the slot / symbol / frame at which reception of the low-power weather signal period (e.g., LO) will begin.

[0306] - A slot / symbol / frame located a certain time before the paging time (e.g., PO) to be received by the terminal upon reception of a low-power wake-up signal (e.g., LP-WUS) can be determined as a slot / symbol / frame at which a low-power wake-up signal time (e.g., LO) is to be received.

[0307] - In the operation of RRC-CONNECTED mode, the monitoring time (e.g., MO) of the physical base station-to-terminal control channel (e.g., PDCCH) to be received may be considered instead of the paging time (e.g., PO).

[0308] According to one embodiment of the present disclosure, the symbol / slot position and length or slot position (especially when a low-power weather signal (e.g., LP-WUS) is predefined or set to be received at a specific position in the slot) of the first (e.g., earliest) low-power weather signal monitoring epoch (e.g., LMO) within the low-power weather signal epoch (e.g., LO) from the slot / frame in which the low-power weather signal epoch (e.g., LO) reception is to start may be set or predefined via upper layer signaling (e.g., SIB) of the base station.

[0309] For example, if other low-power weather signal monitoring occasions (e.g., LMO) exist, the terminal can determine the position of other low-power weather signal monitoring occasions (e.g., LMO) from (or based on) the first low-power weather signal monitoring occasion (e.g., LMO) within a given low-power weather signal occasion (e.g., LO). To this end, the base station can set the position of each low-power weather signal monitoring occasion (e.g., LMO) within the low-power weather signal occasion (e.g., LO) (e.g., the slot offset at which each low-power weather signal monitoring occasion (e.g., LMO) is located from the start slot of the low-power weather signal occasion (e.g., LO).

[0310] Here, for example, each low-power weather signal monitoring period (e.g., LMO) within a low-power weather signal period (e.g., LO) may be set to a specific time slot within the low-power weather signal period (e.g., LO). Alternatively, for example, the low-power weather signal monitoring periods (e.g., LMO) within the low-power weather signal period (e.g., LO) may occur periodically at regular intervals a set number of times.

[0311] For example, at least one of the following methods may be used to determine the number and configuration of low-power weather signal monitoring periods (e.g., LMO) to be received by the terminal.

[0312] For example, the terminal may receive from the base station the number of low-power weather signal monitoring periods (e.g., LMO) within one low-power weather signal period (e.g., LO).

[0313] Alternatively, for example, to determine a low-power weather signal monitoring period (e.g., LMO) to be received by a terminal in one low-power weather signal period (e.g., LO), the terminal may consider the number of terminal subgroups configured in one low-power weather signal period (e.g., LO) from the base station and the number of reference signals or beams associated with the low-power weather signal (e.g., LP-WUS) transmission.

[0314] For example, in order for the terminal to determine the low-power weather signal monitoring periods (e.g., LMO) to be received within a low-power weather signal period (e.g., LO), the terminal may receive a setting (or setting information) from the base station that states (or indicates) that "the number of low-power weather signal monitoring periods (e.g., LMO) within the low-power weather signal period (e.g., LO) is 4." In this case, the terminal may monitor 4 low-power weather signal monitoring periods (e.g., LMO) within the low-power weather signal period (e.g., LO). As described above, the number of given low-power weather signal monitoring periods (e.g., LMO) may be indirectly set through the number of beams or reference signals to be referenced, and each low-power weather signal monitoring period (e.g., LMO) within the low-power weather signal period (e.g., LO) may be associated with a preset beam or reference signal. By monitoring the given 4 reference signals, the terminal may select the optimal low-power weather signal monitoring period (e.g., LMO) or combine the received signals to improve reception performance.

[0315] For another example, in order to determine the low-power weather signal monitoring period (e.g., LMO) to be received within the low-power weather signal period (e.g., LO), the terminal may receive a configuration (or configuration information) from the base station that states (or indicates) that "the number of terminal subgroups within the low-power weather signal period (e.g., LO) is 16, and is associated with 4 reference signals for receiving the low-power weather signal monitoring period (e.g., LMO)". In this case, the terminal may assume that one low-power weather signal monitoring period (e.g., LMO) group is configured for each of the 8 subgroups, and that different low-power weather signal monitoring periods (e.g., LMO) for the 4 reference signals occur in each low-power weather signal monitoring period (e.g., LMO) group. Thereafter, for example, the terminal may select the optimal low-power weather signal monitoring period (e.g., LMO) in each low-power weather signal monitoring period (e.g., LMO) group by monitoring the given 4 reference signals, or may combine the received signals to improve reception performance.

[0316] Additionally, for example, the base station may transmit additional low-power weather signal monitoring occasions (e.g., LMO) for (or based on) a specific beam or reference signal. For example, the base station may transmit to the terminal a configuration that grants additional low-power weather signal monitoring occasions (e.g., LMO) for a specific beam or a number of repetition transmissions per beam or reference signal, in which case the terminal may monitor the additional low-power weather signal monitoring occasions (e.g., LMO) for the corresponding beam. For example, such configurations may be dynamically adjusted based on the importance or traffic requirements of a specific beam or reference signal. Alternatively, a number of repetition transmissions that will be used commonly across beams may be configured. Such configurations may be ignored for terminals that assume that repetition transmissions are not used.

[0317] For example, consider a case where the base station sets the number of repetitions for beams A, B, and C to 2, 3, and 1, respectively. In this case, the terminal can monitor low-power weather signal monitoring periods (e.g., LMO) twice for beam A, three times for beam B, and once for beam C. Therefore, the terminal can monitor a total of six low-power weather signal monitoring periods (e.g., LMO), which can be performed in the following order:

[0318] 1. The first (earliest) low-power weather signal monitoring time of beam A (e.g., LMO)

[0319] 2. The second (earliest) low-power weather signal monitoring period of beam A (e.g., LMO)

[0320] 3. The first (earliest) low-power weather signal monitoring time of Beam B (e.g., LMO)

[0321] 4. The second (earliest) low-power meteorological signal monitoring period of Beam B (e.g., LMO)

[0322] 5. The third (earliest) low-power meteorological signal monitoring period of Beam B (e.g., LMO)

[0323] 6. The first (earliest) low-power meteorological signal monitoring time of Beam C (e.g., LMO)

[0324] In this way, the terminal monitors low-power weather signal monitoring (e.g., LMO) based on the number of repetitions set for each beam. This allows the terminal to select the optimal low-power weather signal monitoring (e.g., LMO) or combine received signals to improve reception performance. These settings can be dynamically adjusted based on the importance of specific beams or reference signals or traffic requirements, contributing to maximizing network efficiency.

[0325] If, for example, multiple low-power weather signal monitoring periods (e.g., LMO) are used to transmit a single low-power weather signal (e.g., LP-WUS) message, the low-power weather signal monitoring periods (e.g., LMO) may be assumed to be a single low-power weather signal monitoring period (e.g., LMO) group and repeated transmission may be applied. In this case, repeated transmission may be performed for each low-power weather signal monitoring period (e.g., LMO) group, or repeated transmission may be performed a given number of times for each low-power weather signal monitoring period (e.g., LMO) within the low-power weather signal monitoring period (e.g., LMO) group.

[0326] [Method #1-1]

[0327] According to one embodiment of the present disclosure, an extended, low power weather signal timing (e.g., LO) and low power weather signal monitoring timing (e.g., LMO) allocation method for beams, groups, repetitions, and different information may be provided.

[0328] For example, the configuration of low-power weather signal monitoring periods (e.g., LMO) for transmitting low-power weather signals (e.g., LP-WUS) can be subdivided as follows: For one beam, K low-power weather signal monitoring periods (e.g., LP-WUS MO) are G (G 1) are divided into groups, and each group is divided into R * M (M 1) It can be composed of low-power weather signal monitoring periods (e.g., LP-WUS MO). Here, the terminal can monitor some or all monitoring periods (e.g., MO) among the groups composed of R * M low-power weather signal monitoring periods (e.g., LP-WUS MO) based on its own subgroup ID (or group ID).

[0329] Here, for example, each group of R * M low-power weather signal monitoring periods (e.g., LP-WUS MO) can be further subdivided into M groups of R low-power weather signal monitoring periods (e.g., LP-WUS MO). Wherein:

[0330] - Within each group consisting of R low-power weather signal monitoring periods (e.g., LP-WUS MO), the same low-power weather signal (e.g., LP-WUS) information can be transmitted.

[0331] - Different low-power weather signal (e.g., LP-WUS) information can be transmitted between different M groups consisting of R low-power weather signal monitoring periods (e.g., LP-WUS MO). Here, for example, M 1 or R It could be 1 day.

[0332] Alternatively, for example, given B beams, G sets of terminal subgroups, R repeated transmissions, and M different pieces of information, a total of B * G * R * M transmissions can be constructed. Then:

[0333] - G * R * M low power weather signal monitoring periods (e.g., LMO) can be allocated to one beam.

[0334] - One terminal can receive a total of B * R * M low-power weather signal monitoring periods (e.g., LMO), which can correspond to R * M low-power weather signal monitoring periods (e.g., LMO) per beam.

[0335] For example, the following deployment principles can be considered for efficient configuration of low-power weather signal monitoring periods (e.g., LMO):

[0336] 1. Terminal groups can be arranged to be as temporally dispersed as possible, and repeated transmissions can be arranged temporally adjacent. For example, weather signal monitoring periods (e.g., LMO) can be mapped in the order R -> G -> M -> B, or R -> G -> B -> M.

[0337] 2. For simple, repetitive transmissions of identical information, it may be more efficient for terminals and base stations to transmit the next piece of information after completing transmissions for all beams. In this case, weather signal monitoring periods (e.g., LMO) can be mapped in the order R -> B -> G -> M.

[0338] 3. Alternatively, for example, these deployment principles may be set via higher layer signaling (e.g., RRC / SIB) of the base station, and the terminal may map low-power weather signal monitoring periods (e.g., LMO) according to the indicated or set deployment principles. For example, to set deployment principles, candidates for deployment principles may be set or defined in advance, and the terminal may receive one of the indices of the set or predefined deployment principles to determine the deployment principle to be used for mapping low-power weather signal monitoring periods (e.g., LMO).

[0339] For example, the following shows an example of mapping low-power weather signal monitoring periods (e.g., LMO) in the order of "R -> G -> M -> B" when B = 2 (number of beams), G = 2 (number of terminal subgroup sets), M = 2 (number of different pieces of information), and R = 2 (number of repeated transmissions).

[0340] For example, below, each low-power weather signal monitoring period (e.g., LMO) is denoted as follows:

[0341] - Bw: wth beam (w = 0, 1)

[0342] - Gx: xth terminal subgroup set (x = 0, 1)

[0343] - My: yth information (y = 0, 1)

[0344] - Rz: zth iteration transmission (z = 0, 1)

[0345] Here, if any of the values ​​of B, G, M, and R is 1, the corresponding element can be omitted from the mapping notation. For example, R -> G -> M -> B is:

[0346] - When B = 1: R -> G -> M mapping is Gx_My_Rz

[0347] - If G = 1: Bw_My_Rz with R -> M -> B mapping

[0348] - When M = 1: R -> G -> B mapping is Bw_Gx_Rz

[0349] - When R = 1: G -> M -> B mapping is Bw_Gx_My

[0350] - When G=1, R=1: M -> B mapping Bw_My

[0351] can be expressed in the form of

[0352] [Low-power weather signal monitoring period (e.g., LMO) mapping sequence]

[0353] 1. B0_G0_M0_R0: First (earliest) transmission of beam 0, subgroup 0, information 0

[0354] 2. B0_G0_M0_R1: Second (earliest) transmission of beam 0, subgroup 0, information 0

[0355] 3. B0_G1_M0_R0: First (earliest) transmission of beam 0, subgroup 1, information 0

[0356] 4. B0_G1_M0_R1: Second (earliest) transmission of beam 0, subgroup 1, information 0

[0357] 5. B0_G0_M1_R0: First (earliest) transmission of beam 0, subgroup 0, information 1

[0358] 6. B0_G0_M1_R1: Second (earliest) transmission of beam 0, subgroup 0, information 1

[0359] 7. B0_G1_M1_R0: First (earliest) transmission of beam 0, subgroup 1, information 1

[0360] 8. B0_G1_M1_R1: Second (earliest) transmission of beam 0, subgroup 1, information 1

[0361] 9. B1_G0_M0_R0: First (earliest) transmission of beam 1, subgroup 0, information 0

[0362] 10. B1_G0_M0_R1: Second (earliest) transmission of beam 1, subgroup 0, information 0

[0363] 11. B1_G1_M0_R0: First (earliest) transmission of beam 1, subgroup 1, information 0

[0364] 12. B1_G1_M0_R1: Second (earliest) transmission of beam 1, subgroup 1, information 0

[0365] 13. B1_G0_M1_R0: First (earliest) transmission of beam 1, subgroup 0, information 1

[0366] 14. B1_G0_M1_R1: Second (earliest) transmission of beam 1, subgroup 0, information 1

[0367] 15. B1_G1_M1_R0: First (earliest) transmission of beam 1, subgroup 1, information 1

[0368] 16. B1_G1_M1_R1: Second (earliest) transmission of beam 1, subgroup 1, information 1

[0369] For example, in the R -> G -> M -> B mapping structure:

[0370] - Repeated transmissions of the same information (R) can be placed temporally adjacent first.

[0371] - Next, a set of terminal subgroups (G) can be placed.

[0372] - Different information (M) can be arranged in the following order.

[0373] - Finally, transmissions to other beams (B) can be arranged.

[0374] For example, a terminal belonging to subgroup 0:

[0375] - In beam 0, low power weather signal monitoring periods 1, 2, 5, and 6 (e.g., LMO)

[0376] - In beam 1, low power weather signal monitoring periods (e.g., LMO) of 9, 10, 13, and 14 can be monitored.

[0377] This mapping structure can ensure temporal proximity of repeated transmissions while distributing the transmission of information to different terminal groups in time, thereby enabling efficient reception.

[0378] This configuration can be flexibly applied considering network requirements and implementation efficiency, and each parameter can be dynamically adjusted according to network conditions.

[0379] [Method #1-2]

[0380] According to one embodiment of the present disclosure, a method for setting the number of low-power weather signal monitoring periods (e.g., LMO) and determining a combination thereof may be provided.

[0381] For example, a method for a base station to set the number of low-power weather signal monitoring periods (e.g., LMO) within a low-power weather signal period (e.g., LO) can be specified as follows: The base station can determine the total number of low-power weather signal monitoring periods (e.g., LMO) within a low-power weather signal period (e.g., LO) by at least one of the following methods.

[0382] 1. The base station can set the number of total low-power weather signal monitoring periods (e.g., LMO) N and the number of one or more groups among G, R, M, and B. In this case:

[0383] For example, if the total number of low-power weather signal monitoring periods (e.g., LMO) is not divisible by the number of groups, the number of low-power weather signal monitoring periods (e.g., LMO) of each group may be different from that of other groups.

[0384] - The number of low-power weather signal monitoring periods (e.g., LMO) in the last group can be set to the remainder value N mod (N * R * M * B).

[0385] For example, the base station can be configured to always divide the total number of low-power weather signal monitoring periods (e.g., LMO) by the number of groups.

[0386] For example, the number of total low-power weather signal monitoring periods (e.g., LMO) and the number of groups among G, R, and M can be determined.

[0387] 2. The base station can set the total number of low-power weather signal monitoring periods (e.g., LMO) using the number of beams B and the number of low-power weather signal monitoring periods (e.g., LMO) per beam. In this method:

[0388] For example, the total number of low-power weather signal monitoring periods (e.g., LMO) can be determined as B * (number of low-power weather signal monitoring periods (e.g., LMO) per beam).

[0389] For example, the number of beams to be used can be set separately by the base station to be equal to or smaller than the number of configured SSBs or the number of LP-SSs.

[0390] - If the number of beams to be used is equal to the number of SSBs or LP-SSs, the nth beam of a low power weather signal (e.g., LP-WUS) may be associated with the beam used for the nth SSB transmission within an SSB burst or the nth LP-SS transmission within a cycle.

[0391] - If the number of beams to be used is smaller than the number of SSB or LP-SS, an operation may be performed in which the number X of low-power weather signal monitoring periods (e.g., LP-WUS MO) within the previously described low-power weather signal periods (e.g., LO) is smaller than the number Y of associated beams or reference signals.

[0392] For example, the number of low-power weather signal monitoring periods (e.g., LMO) per beam can be set, and the number of groups of G, R, and M can be set and derived (from the product of these) (the number of beams to be used).

[0393] Alternatively, for example, a maximum number of low-power weather signal monitoring periods (e.g., LMO) per beam can be set, and can be set via SIB. In this case, the low-power weather signal monitoring periods (e.g., LMO) can be determined from one or more of the set G, R, and M values.

[0394] - For example, if G, R, and M are all set and their product is less than the maximum number of low-power weather signal monitoring periods (e.g., LMO) per beam, the product of G, R, and M can be used as the number of low-power weather signal monitoring periods (e.g., LMO) per beam.

[0395] - For example, when G and M are set, the quotient of the maximum number of low-power weather signal monitoring periods (eg, LMO) per beam divided by GxM is used as R, and the product of G, R, and M can be used as the number of low-power weather signal monitoring periods (eg, LMO) per beam.

[0396] 3. For example, the base station can set the number of each group and determine the total number of low-power weather signal monitoring periods (e.g., LMO) by multiplying them (or based on the multiplication). In this case:

[0397] - For example, the number of each G, R, and M group can be individually set via SIB.

[0398] - For example, the set G * R * M low power weather signal monitoring periods (e.g., LMO) can be configured per beam.

[0399] For example, this method may be particularly useful when the overall number of low-power weather signal monitoring periods (e.g., LMO) is limited, or when the number of low-power weather signal monitoring periods (e.g., LMO) per beam is limited.

[0400] According to one embodiment of the present disclosure, the following may be additionally considered with respect to the number of beams and the number of low-power weather signal monitoring periods (e.g., LMO) per beam:

[0401] For example, if the total number of low-power weather signal monitoring periods (e.g., LMO) within a low-power weather signal period (e.g., LO) is indicated / derived and determined, the maximum number of low-power weather signal monitoring periods (e.g., LMO) per beam can be derived based on this.

[0402] The number of beams is determined separately, and the total number of low-power weather signal monitoring periods (e.g., LMO) can be evenly divided according to the number of beams. The number of beams B can be determined as follows.

[0403] Option 1: It can be determined to be the same as the number of SSBs.

[0404] Option 2: The number of beams B can be determined to be equal to the number of LP-SS.

[0405] Option 3: The number of beams B can be set separately to a value smaller than the number of SSBs or LP-SSs.

[0406] Option 4: The number of beams B can be set using the time interval characteristics (below) of the low power weather signal monitoring period (e.g., LMO).

[0407] - LMO_duration: Length of time interval for one low-power weather signal monitoring period (e.g., LMO)

[0408] - LO_distance: The distance from the start of the current low-power weather signal period (eg, LO) to the start of the next low-power weather signal period (eg, LO).

[0409] - B = floor((LO_distance) / (LMO_duration * G * R * M))

[0410] For example, if the number K of low-power weather signal monitoring periods (e.g., LMO) per beam is separately given (or set), the number B of available beams of low-power weather signals (e.g., LP-WUS) can be determined based on the total number N of low-power weather signal monitoring periods (e.g., LMO). In this case, for example, B = floor(N / K).

[0411] For example, if the total number of low-power weather signal monitoring periods (e.g., LMO) is not divisible by the number of beams, the number of low-power weather signal monitoring periods (e.g., LMO) of the last beam may be different from the other beams.

[0412] Conversely, for example, the total number of low-power weather signal monitoring periods (e.g., LMO) N can be set by considering the distance to the next low-power weather signal period (e.g., LO). For example, N = floor((LO_distance) / (LMO_duration)).

[0413] [Method #2]

[0414] According to one embodiment of the present disclosure, a method may be provided in which repeated transmission is applied to a specific UE group.

[0415] For example, considering the additional resources and time consumed by repetitive transmissions, rather than performing low-power wake-up signal (e.g., LP-WUS) transmissions using repetitive transmissions to all terminals, it may be considered to selectively use repetitive transmissions to the following terminals:

[0416] - A terminal with a sufficiently long time between receiving a low-power wake-up signal (e.g., LP-WUS) and receiving actual paging. For example, the terminal may be a terminal with a relatively long wake-up delay through a low-power wake-up signal (e.g., LP-WUS).

[0417] - A terminal located at the outer edge of a cell. For example, the terminal may be a terminal having a reference signal reception power (e.g., RSRP) below a specific reference signal reception power (e.g., RSRP) threshold.

[0418] - Terminals that need to use relatively important services (e.g., mission critical services).

[0419] - When there are a large number of terminal groups or terminal subgroups set up for low-power weather signals (e.g., LP-WUS).

[0420] According to various embodiments of the present disclosure, in order to selectively support repeat transmission to these terminals, the terminal and the base station may consider the following.

[0421] For example, a base station can set a parameter in the SIB that designates a group of terminals that require repeated transmission of a low-power weather signal (e.g., LP-WUS). For example, a parameter indicating the range of indices of a group of terminals or a subgroup of terminals that utilize repeated transmission can be provided (or set) via the SIB. Terminals belonging to a group of terminals designated by the parameter can be assumed to use repeated transmission.

[0422] For example, a base station may assign a terminal to a specific terminal group, and it may be assumed that the terminals assigned to the group use repetitive transmission. This assignment (or subgrouping) of terminal groups may be performed by the access and mobility management function (AMF) via non-access stratum (e.g., NAS; non-access stratum) signaling (i.e., CN-based UE subgrouping). For example, this operation may be limited to a terminal subgroup within a specific index range (or applied to a terminal subgroup within a specific index range).

[0423] For example, a base station may set a parameter in the SIB that specifies a reference signal receive power (e.g., RSRP) threshold for using repetitive transmission. A terminal with a reference signal receive power (e.g., RSRP) lower than the threshold may assume that repetitive transmission is being used.

[0424] For example, a terminal with a wake-up delay greater than a threshold value defined in advance or set by the base station may assume that repeat transmission is used.

[0425] For example, a base station may include an indicator for a specific group within a low-power wake-up signal (e.g., LP-WUS) message. Terminals belonging to the indicated group may assume that repeat transmission is enabled. This indicator may include at least one of the following pieces of information:

[0426] - Identifier of the group to which the repeat transmission applies

[0427] - Number of repeat transmissions for that group

[0428] For example, if the number of terminal groups or terminal sub-groups configured is greater than some threshold, the terminal may assume that repeat transmission is used.

[0429] For example, a terminal assuming that repetitive transmission (as described above) is used may use at least one of the following methods to determine the location of a repetitive low-power weather signal monitoring period (e.g., LMO).

[0430] For example, the terminal can determine the location of a low-power weather signal monitoring period (e.g., LMO) within a low-power weather signal period (e.g., LO) by applying a number of low-power weather signal monitoring periods (e.g., LMO) that are predefined or set for use by the base station when applying repetitive transmissions.

[0431] For example, a terminal may consider multiple low-power weather signal periods (e.g., LO) as a single low-power weather signal period (e.g., LO) depending on the number of repetition transmissions. For example, a terminal using double repetition transmission may consider two consecutive low-power weather signal periods (e.g., LO) as a single low-power weather signal period (e.g., LO) and may assume that the same information is transmitted twice in each low-power weather signal monitoring period (e.g., LMO) within this combined low-power weather signal period (e.g., LO).

[0432] According to one embodiment of the present disclosure, the method for determining the low-power weather signal timing (e.g., LO) may vary. For example, the following may be considered.

[0433] For example, if the location of a low-power wake-up signal period (e.g., LO) is determined using a terminal identifier (e.g., 5G-S-TMSI) that the terminal has or has set, the number of low-power wake-up signal periods (e.g., LO) per paging DRX (discontinuous reception) cycle, the number of frames in which low-power wake-up signal periods (e.g., LO) can be received, or the number of low-power wake-up signal periods (e.g., LO) within a frame may be applied differently.

[0434] Here, for example, if a terminal that does not use repetitive transmission assumes a frame in which eight low-power wake-up signal epochs (e.g., LO) or low-power wake-up signal epochs (e.g., LO) can be received per cycle, a terminal that uses two repetitive transmissions can assume four low-power wake-up signal epochs (e.g., LO) per cycle. This allows the frequency of low-power wake-up signal (e.g., LP-WUS) reception by a terminal that uses repetitive transmission to decrease, and the length of time taken for a single low-power wake-up signal (e.g., LP-WUS) transmission can be increased by the amount required for repetitive transmission.

[0435] According to one embodiment of the present disclosure, when a low-power wake-up signal time (e.g., LO) position is determined using a slot / symbol / frame located a certain time prior to a paging time (e.g., PO) to be received by a terminal, a paging time (e.g., PO) to be used for determining the low-power wake-up signal time (e.g., LO) position can be specified.

[0436] More specifically, for example, if a low-power wake-up signal time (e.g., LO) is not determined for every paging epoch (e.g., PO) and two-time repeat transmission is applied, the low-power wake-up signal time (e.g., LO) position can be determined for every second paging epoch (e.g., PO). This allows the interval between low-power wake-up signal times (e.g., LO) to be longer than when repeat transmission is not used.

[0437] Through the method proposed above, terminals using repetitive transmission are limited to terminals within a specific terminal group, and the frequency of occurrence of low-power weather signal periods (e.g., LO) and the number of low-power weather signal monitoring periods (e.g., LMO) within a low-power weather signal period (e.g., LO) of the terminals can be adjusted according to the situation.

[0438] FIG. 12 illustrates a procedure for core network-based subgrouping and group-based low-power weather signal (e.g., LP-WUS) transmission based thereon, according to an embodiment of the present disclosure. The embodiment of FIG. 12 may be combined with various embodiments of the present disclosure, and the descriptions, functions, procedures, proposals, methods, and / or operations of the practical examples may be omitted.

[0439] Referring to FIG. 12, a first device that is to receive a paging message from a second device, a second device that transmits the paging message, and a third device that functions as a core network are illustrated. For example, the first device may be a terminal, the second device may be a base station, and the third device may include an access and mobility management function (AMF).

[0440] First, the subgrouping described in various embodiments of the present disclosure may be performed by the third device, and / or may be performed based on a mobility terminal identifier (e.g., IMEI) associated with the first device. The mobility terminal identifier (e.g., IMEI) may be transmitted from the first device to the third device via the second device via non-access layer signaling (e.g., NAS signaling). Specifically, in step S1210, the first device may transmit information related to its mobility terminal identifier (e.g., IMEI) to the second device via non-access layer signaling (e.g., NAS signaling). In step S1220, the second device may forward the received non-access layer signaling to the third device without decoding it.

[0441] In step S1230, the third device may determine a group (e.g., the first group) to which the first device belongs based on the mobile terminal identifier (e.g., IMEI) of the first device. The operation of step S1230 may include subgrouping.

[0442] In step S1240, the third device may transmit information related to the first group to the second device. In step S1250, the second device may transmit information related to the first group to the first device.

[0443] In step S1260, the second device may transmit a low-power wake-up signal (e.g., LP-WUS) to the first group based on the first device being included in the first group. Thereafter, the first device may receive the low-power wake-up signal (e.g., LP-WUS) transmitted to the first group and receive a paging message at a paging opportunity based on the first device being a target of receiving the paging message.

[0444] [Method #3]

[0445] According to one embodiment of the present disclosure, a method of handling time division multiplexing (e.g., TDD) of low power weather signal timing (e.g., LO) allocation considering backward compatibility may be provided.

[0446] For example, considering that a low-power weather signal (e.g., LP-WUS) is a base station-to-terminal transmission (e.g., DL transmission), there may be cases where the low-power weather signal (e.g., LP-WUS) transmission cannot be performed in a time division multiplexing (e.g., TDD) system.

[0447] In particular, due to the characteristics of a time division multiplexing (e.g., TDD) system in which base station-to-terminal transmission (e.g., DL transmission) becomes impossible periodically, a problem may arise in which a specific time portion of a low-power weather signal (e.g., LP-WUS) transmission cycle becomes continuously untransmittable.

[0448] In particular, when a low-power weather signal (e.g., LP-WUS) is used in RRC-CONNECTED mode, the low-power weather signal (e.g., LP-WUS) may collide with other transmissions, or even when the low-power weather signal (e.g., LP-WUS) does not collide, a physical base station-to-terminal control channel (e.g., PDCCH) that should be received through the low-power weather signal (e.g., LP-WUS) may not be transmitted, and unnecessary power consumption may occur as the terminal unnecessarily detects the low-power weather signal (e.g., LP-WUS).

[0449] To this end, the present disclosure proposes a method for avoiding and allocating specific locations when allocating low-power weather signal timing (e.g., LO) and low-power weather signal monitoring timing (e.g., LMO) for low-power weather signals (e.g., LP-WUS), taking into account the characteristics of a time-division multiplexing (e.g., TDD) system, the use of other resources, and future compatibility. This may be to maximize network efficiency, minimize interference, and ensure compatibility with various terminals.

[0450] According to one embodiment of the present disclosure, at least one of the following may be considered as a method for considering time division multiplexing (e.g., TDD) operation when allocating low power weather signals (e.g., LP-WUS).

[0451] For example, the terminal may attempt to detect a low-power weather signal (e.g., LP-WUS) only if a paging occasion or a physical base station-to-terminal control channel monitoring opportunity (e.g., PDCCH MO) to be received after detection of the low-power weather signal (e.g., LP-WUS) is valid. For example, if a paging occasion or a physical base station-to-terminal control channel monitoring opportunity (e.g., PDCCH MO) to be received after detection of the low-power weather signal (e.g., LP-WUS) is invalid, the terminal may assume that the associated low-power weather signal occasion (e.g., LO) or low-power weather signal monitoring occasion (e.g., LMO) is also invalid and may not attempt to detect it.

[0452] For example, time division multiplexing (e.g., TDD) operation may be considered to determine the validity of a paging timing to be received or a physical base station-to-terminal control channel monitoring opportunity (e.g., PDCCH MO).

[0453] According to one embodiment of the present disclosure, when a low-power weather signal period (e.g., LO) occurs at a certain period, the terminal may determine the interval between low-power weather signal periods (e.g., LO) by considering only base station-to-terminal communication (e.g., DL) slots or symbols when determining the interval between low-power weather signal periods (e.g., LO) according to the period. For example, a base station-to-terminal communication (e.g., DL) slot may be a slot in which all symbols within the slot are base station-to-terminal communication (e.g., DL) symbols, or a slot including a certain threshold or more of base station-to-terminal communication (e.g., DL) symbols.

[0454] For example, the terminal may not receive a low-power weather signal monitoring period (e.g., LMO) if at least one symbol of the low-power weather signal monitoring period (e.g., LMO) is a terminal-to-base station communication (e.g., UL) symbol.

[0455] For example, a terminal may not receive a low-power weather signal period (e.g., LO) that includes a low-power weather signal monitoring period (e.g., LMO) if at least one symbol of the low-power weather signal monitoring period (e.g., LMO) is a terminal-to-base station communication (e.g., UL) symbol.

[0456] For example, a terminal may receive a low-power weather signal monitoring period (e.g., LMO) only if all symbols of the low-power weather signal monitoring period (e.g., LMO) are base station-to-terminal communication (e.g., DL) symbols or flexible symbols.

[0457] For example, a terminal may attempt reception for a low-power weather signal monitoring period (e.g., LMO) within a low-power weather signal period (e.g., LO) only if all symbols of that low-power weather signal monitoring period (e.g., LMO) within that low-power weather signal period (e.g., LO) are base station-to-terminal communication (e.g., DL) symbols or flexible symbols.

[0458] According to one embodiment of the present disclosure, at least one of the following may be considered as a method for considering other transmissions when allocating low power weather signals (e.g., LP-WUS).

[0459] For example, if a symbol configured to receive a low-power weather signal (e.g., LP-WUS) in RRC connected mode (e.g., RRC-CONNECTED) overlaps in time with another configured base station-to-terminal transmission (e.g., DL transmission), the terminal may not attempt to detect the low-power weather signal (e.g., LP-WUS). For example, the above embodiment may be limited to be applied to a terminal that cannot simultaneously receive receptions from a low-power weather signal (e.g., LP-WUS) receiver and a primary receiver.

[0460] According to one embodiment of the present disclosure, at least one of the following may be considered as a method for considering post-compatibility when allocating a low-power weather signal (e.g., LP-WUS).

[0461] For example, the terminal may receive a list of invalid resources given by the base station for low power weather signal (e.g., LP-WUS) allocation and availability check.

[0462] For example, the invalid resource list may be a resource list indicating only time resources, a resource list indicating only frequency resources, or a resource list indicating time-frequency resources. For example, the invalid resource list may be a resource list indicating symbols that cannot be used as low-power weather signals (e.g., LP-WUS), or a message indicating a specific time-frequency resource region.

[0463] For example, a wireless resource included in the invalid resource list may be assumed to repeat with a specific period and / or offset. In this case, the period and / or offset applied to the resource included in the invalid resource list may be the same value as the period and offset of a low-power weather signal (e.g., LP-WUS), the same value as the period of a discontinuous reception (e.g., DRX) operation, or the period and offset may be set to be applied to the entire resource list, or the period and offset may be set for each resource in the resource list.

[0464] For example, a terminal may not expect to receive a low-power weather signal (e.g., LP-WUS) during a low-power weather signal period (e.g., LO) or a low-power weather signal monitoring period (e.g., LMO) that overlaps with an invalid resource list.

[0465] For example, if the invalid resource list is a resource list indicating only time resources, it may be assumed that there is an overlap with a low-power weather signal period (e.g., LO) or a low-power weather signal monitoring period (e.g., LMO) if the invalid resource overlaps in at least one symbol.

[0466] For example, if the invalid resource list is a resource list indicating only frequency resources, it may be assumed that there is an overlap with a low-power weather signal period (e.g., LO) or a low-power weather signal monitoring period (e.g., LMO) and the invalid resource overlaps in at least one resource block (e.g., RB).

[0467] For example, if the invalid resource list is a resource list indicating time-frequency resources, it may be assumed that there is an overlap with a low-power weather signal period (e.g., LO) or a low-power weather signal monitoring period (e.g., LMO) if the invalid resource overlaps with at least one resource element (e.g., RE).

[0468] For example, if a low-power weather signal monitoring period (e.g., LMO) overlaps with an invalid resource, the terminal may not receive a low-power weather signal period (e.g., LO) that includes the low-power weather signal monitoring period (e.g., LMO).

[0469] [Method #4]

[0470] According to one embodiment of the present disclosure, a terminal capability reporting method related to a low power weather signal period (e.g., LO) and a low power weather signal monitoring period (e.g., LMO) may be provided.

[0471] For example, a terminal's ability to receive low-power weather signal monitoring (e.g., LMO) can be defined based on its support for combinations of group parameters. These group parameters may include the number of terminal subgroups (G), the number of repeated transmissions (R), the number of different pieces of information (M), and the number of beams (B). Considering hardware implementation complexity and power consumption, a terminal may support a limited set of group parameter combinations.

[0472] Method 1: Using mutually exclusive group parameters

[0473] Here, repeated transmission and multiple information transmission can be configured as mutually exclusive. For example, if the number of repeated transmissions (R) is set to greater than 1, the number of different information (M) can be limited to 1, or vice versa.

[0474] For example, a base station can be configured to distinguish between a repeat transmission mode and a multiple information mode during setup, and the range of parameters supported in each mode can be defined differently.

[0475] For example, a terminal can only support values ​​greater than 1 for up to N of G, R, and M. For example, in a terminal with N=2, if G and R are set to values ​​greater than 1, M may be limited to 1.

[0476] Method 2: Including Supportable Group Combinations in Terminal Capability Reports

[0477] (1) The terminal can report the group combinations it can support.

[0478] For example, a terminal may report a list of groups for which values ​​greater than 1 are supported. For example, a terminal may report that it supports G>1, R>1, and only supports M=1.

[0479] For example, a terminal can report the specific combination of values ​​it can support for each group parameter. For example:

[0480] If M=1, R={1,2,4,8} is supported.

[0481] If M=2, R={1,2,4} is supported.

[0482] If M=4, R={1,2} is supported.

[0483] (2) The terminal can report constraints.

[0484] For example, a terminal can report constraints on the product of group parameters. For example:

[0485] R*M 8 limits

[0486] G*R*M 16 limits

[0487] As above, the terminal can report the maximum supportable value of each group parameter.

[0488] According to one embodiment of the present disclosure, a terminal may perform the following terminal operations for group combinations that it does not support.

[0489] Method 1: Fallback to default behavior

[0490] The terminal may not start receiving low-power wake-up signals (e.g., LP-WUS) for group combinations that it does not support, or may stop receiving low-power wake-up signals (e.g., LP-WUS) and switch to the conventional paging method.

[0491] For example, in this case, signaling could be added to notify the base station of this fact.

[0492] Method 2: Perform limited receiving operations

[0493] If group differentiation (G) is not supported, the terminal can receive all low-power weather signal monitoring periods (e.g., LMO) without distinction.

[0494] If repeat transmission (R) is not supported:

[0495] - The terminal can only receive the first (earliest) transmission among the repeated transmissions of each G*M group.

[0496] - Alternatively, the terminal can receive only one transmission.

[0497] If multi-information transmission (M) is not supported:

[0498] - The terminal can only receive the first (earliest) information among the different information transmissions within each G group.

[0499] - Alternatively, the terminal can receive only one piece of information.

[0500] This method enables efficient low-power weather signal (e.g., LP-WUS) reception while considering the implementation complexity of the terminal. The base station can set appropriate low-power weather signal (e.g., LP-WUS) transmission parameters considering the capabilities of the terminal. Furthermore, even when a combination not supported by the terminal is set, basic paging reception functionality can be maintained through fallback operations. This can enable efficient low-power weather signal (e.g., LP-WUS) operation while accommodating the hardware constraints of various terminals.

[0501] [Method #5]

[0502] According to one embodiment of the present disclosure, an allocation method for a low power weather signal monitoring period (e.g., LMO) may be provided.

[0503] For example, in the time domain for transmitting low-power weather signals (e.g., LP-WUS), allocation of low-power weather signal monitoring time (e.g., LMO) can be performed as follows, taking into account efficient use of time-frequency resources and reception performance of the terminal.

[0504] For example, in time resource allocation, a back-to-back method may be used to sequentially allocate low-power weather signal monitoring periods (e.g., LMO) from the start of a low-power weather signal period (e.g., LO). For example, at least one of the following methods may be used for back-to-back allocation.

[0505] According to one embodiment of the present disclosure, low-power weather signal monitoring periods (e.g., LMO) can be allocated in a completely continuous manner in units of OFDM symbols. In this case, consecutive symbols can be allocated to a single low-power weather signal monitoring period (e.g., LMO) regardless of slot boundaries.

[0506] According to one embodiment of the present disclosure, slot boundary-based allocation may be possible. In this case, if a low-power weather signal monitoring period (e.g., LMO) crosses a slot boundary, the low-power weather signal monitoring period (e.g., LMO) may not be continuous (in symbol units) with the previous low-power weather signal monitoring period (e.g., LMO) and may start anew at the beginning of the next slot.

[0507] According to one embodiment of the present disclosure, allocation may be possible considering a grid of (arbitrary) low-power weather signals (e.g., LP-WUS). For example, the time at which low-power weather signals (e.g., LP-WUS) transmission can begin for each slot may be predefined or set.

[0508] Additionally, for example, not only the start point but also the end point of a low-power wake-up signal (e.g., LP-WUS) transmission can be specified, thereby defining one or more resource regions in which one low-power wake-up signal (e.g., LP-WUS) transmission can enter (be performed) or one or more candidates for a transmission start point in time where one can start within a certain time interval (e.g., one slot or multiple slots).

[0509] The low-power weather signal (e.g., LP-WUS) grid is determined as defined in this way, and the low-power weather signal monitoring period (e.g., LMO) can be sequentially arranged in consecutive resource areas from the transmission start time candidates indicated based on this grid from the starting point of the low-power weather signal period (e.g., LO). For example, if the transmission section of the previous low-power weather signal monitoring period (e.g., LMO) and the next transmission start time candidate overlap, the transmission start time candidate can be excluded from the low-power weather signal monitoring period (e.g., LMO) allocation, and the next transmission start time candidate can be considered.

[0510] For example, rather than all low-power weather signal monitoring periods (e.g., LMO) being allocated sequentially from the starting point of a low-power weather signal period (e.g., LO), starting positions may be set separately for each reference group. In this case, the starting points may be set differently depending on the mapping order of the low-power weather signal monitoring periods (e.g., LMO). For example, at least one of the following methods may be used to set starting points for each group according to the mapping order.

[0511] When the mapping is in the order of R -> G -> B -> M or R -> B -> G -> M, the low-power weather signal period (e.g., LO) is divided into M groups of consecutive low-power weather signal monitoring periods (e.g., LMO), and the start time of each M group can be individually set.

[0512] When mapping in the order of R -> G -> M -> B, the low-power weather signal period (e.g., LO) is divided into B groups, and the start time of each B group can be individually set.

[0513] When mapping in the order of R -> B -> M -> G, the low-power weather signal period (e.g., LO) is divided into G groups, and the start time of each G group can be individually set.

[0514] For example, within each group, low-power weather signal monitoring periods (e.g., LMO) can be assigned using one of the back-to-back methods described above.

[0515] According to one embodiment of the present disclosure, the allocation of low-power weather signal monitoring periods (e.g., LMO) may be limited by the following constraints.

[0516] First, a limit may be applied based on the start time of the next low-power weather signal period (e.g., LO). At least one of the following methods may be used for this purpose:

[0517] - For example, low-power weather signal monitoring periods (e.g., LMO) are sequentially allocated only until the next low-power weather signal period (e.g., LO) can begin, after which no further low-power weather signal monitoring periods (e.g., LMO) may be allocated.

[0518] - For example, if low-power weather signal monitoring periods (e.g., LMO) within a low-power weather signal period (e.g., LO) are configured by beam, group, or different information, if the entire low-power weather signal monitoring period (e.g., LMO) cannot be placed within a group, the entire group may be excluded from transmission.

[0519] - For example, if low-power weather signal monitoring periods (e.g., LMO) within a low-power weather signal period (e.g., LO) are divided and allocated into M different information groups, if there are not enough time resources to place all low-power weather signal monitoring periods (e.g., LMO) within a specific group, all low-power weather signal monitoring periods (e.g., LMO) in that group may be excluded from transmission.

[0520] Second, a limit based on the number of maximum low-power weather signal monitoring periods (e.g., LMO) may be applied. For this purpose, at least one of the following methods may be used:

[0521] - When the total number of low-power weather signal monitoring periods (e.g., LMO) or the maximum number of low-power weather signal monitoring periods (e.g., LMO) per beam is set, low-power weather signal monitoring periods (e.g., LMO) can be sequentially allocated only until this maximum number is reached.

[0522] - The number of beams actually used (B), the number of terminal group parts (G), the number of repetitive transmissions (R), and the number of different pieces of information (M) can be set to be appropriately selected so that the maximum number of low-power weather signal monitoring periods (e.g., LMO) is not exceeded.

[0523] For example, these parameter adjustments can be made dynamically depending on system conditions and requirements.

[0524] The aforementioned low-power weather signal monitoring (e.g., LMO) allocation methods can be used to efficiently utilize time-frequency resources and improve terminal reception performance. In particular, allocation considering slot boundaries and the low-power weather signal (e.g., LP-WUS) grid minimizes resource waste while enabling stable transmission, and group-specific starting point settings can support optimized transmission tailored to the characteristics of each group. Furthermore, various embodiments of the present disclosure can enable flexible resource management while satisfying system requirements through various constraints.

[0525] FIG. 13 illustrates a resource structure for performing repeated transmission of a low-power weather signal (e.g., LP-WUS) according to an embodiment of the present disclosure. The embodiment of FIG. 13 may be combined with various embodiments of the present disclosure, and the descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0526] Figure 13 (a) illustrates a form in which low-power weather signal monitoring periods (e.g., LMO) are allocated in a completely continuous manner in OFDM symbol units. In this case, consecutive symbols can be allocated to a single low-power weather signal monitoring period (e.g., LMO) regardless of slot boundaries.

[0527] Figure 13(b) illustrates a form in which low-power weather signal monitoring periods (e.g., LMO) are allocated consecutively in slot units. For example, according to the present embodiment, allocation considering slot boundaries may be possible. In this case, if one low-power weather signal monitoring period (e.g., LMO) crosses a slot boundary, the corresponding low-power weather signal monitoring period (e.g., LMO) may not be continuous with the previous low-power weather signal monitoring period (e.g., LMO) and may start anew at the start of the next slot.

[0528] Figure 13(c) illustrates the allocation of low-power weather signal monitoring periods (e.g., LMO) considering a low-power weather signal (e.g., LP-WUS) grid. Here, for example, the low-power weather signal (e.g., LP-WUS) grid is assumed to have 3 slots and a starting point for each slot, but various embodiments of the present disclosure can be extended and applied to one or more slots and the location of specific symbols within each slot, etc.

[0529] Here, for example, not only the start point of a low-power weather signal monitoring period (e.g., LMO) but also the end of a low-power weather signal (e.g., LP-WUS) transmission can be specified, and one or more resource areas or one or more transmission start time candidates that can start a low-power weather signal (e.g., LP-WUS) transmission within a certain time interval (e.g., 1 slot or multiple slots) can be defined. This definition is defined as a low-power weather signal (e.g., LP-WUS) grid, and the low-power weather signal monitoring period (e.g., LMO) can be started consecutively from the start point of a low-power weather signal period (e.g., LO) based on the transmission start time candidates indicated based on this grid, or can be sequentially arranged in consecutive resource areas. For example, if the transmission interval of a previous low-power weather signal monitoring period (e.g., LMO) overlaps with a next transmission start time candidate, the corresponding transmission start time candidate can be excluded from the low-power weather signal monitoring period (e.g., LMO) allocation, and the next transmission start time candidate can be used.

[0530] In a first aspect of the present disclosure, a method for use by a terminal in a wireless communication system may be provided, the method comprising a step of performing an operation proposed in the present disclosure.

[0531] In a second aspect of the present disclosure, a terminal for use 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 configured, when executed, to cause the at least one processor to perform an operation proposed in the present disclosure.

[0532] 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 configured, when executed, to cause the at least one processor to perform an operation proposed in the present disclosure.

[0533] In a fourth aspect of the present disclosure, a computer-readable storage medium may be provided comprising at least one computer program that, when executed, causes at least one processor to perform the operations proposed in the present disclosure.

[0534] In a fifth aspect of the present disclosure, a method for use by a base station in a wireless communication system may be provided, the method comprising a step of performing an operation proposed in the present disclosure.

[0535] In a sixth aspect of the present disclosure, a base station for use in a wireless communication system may be provided, the base station including at least one processor; and at least one computer memory operably connected to the at least one processor and configured, when executed, to cause the at least one processor to perform the proposed operations of the present disclosure.

[0536] Here, the operations proposed in the present disclosure may be described separately for convenience, but unless specifically stated otherwise, the operations may be combined with each other.

[0537] In various embodiments of the present disclosure, a low-power wake-up signal (e.g., LP-WUS) is a signal that a terminal can monitor at low power when it is basically not monitoring paging (idle state), and may include an instruction to perform paging after a specific time interval from the time of receiving the signal. For example, for efficient operation of a low-power wake-up signal (e.g., LP-WUS), it may be important to secure coverage while minimizing situations where a terminal that the base station does not want to wake up occurs (false alarm), and to transmit a reliable low-power wake-up signal (e.g., LP-WUS).

[0538] According to one embodiment of the present disclosure, in order to improve the coverage of a low-power weather signal (e.g., LP-WUS) operation, repeated transmission of the low-power weather signal (e.g., LP-WUS) signal may be performed. According to one embodiment of the present disclosure, when transmitting a low-power weather signal (e.g., LP-WUS), the repeated transmission operation may be performed only for a selected group of terminals, rather than for all terminals.

[0539] Here, for example, the base station can divide the terminals into (sub)groups based on specific conditions (e.g., IMEI), and then perform the repetitive operation only for specific groups, wherein the subgrouping can be performed by the AMF (access and mobility management function) based on non-access layer (e.g., NAS) signaling.

[0540] For example, a base station can designate a group of terminals to use repeated transmissions via system information block (e.g., SIB), non-access layer (e.g., NAS) signaling, reference signal receive power (e.g., RSRP) thresholds, wake-up delay thresholds, or indicators in low-power wake-up signal (e.g., LP-WUS) messages. For example, by utilizing a predefined or established low-power wake-up signal (e.g., LP-WUS) grid, LMOs (e.g., LP-WUS monitoring occasions) can be started sequentially or sequentially from LO (e.g., LP-WUS occasion) starting points at transmission start time candidates designated in that grid.

[0541] According to various embodiments of the present disclosure, the coverage of low-power wake-up signals (e.g., LP-WUS) can be improved through repeated transmissions, while also improving power saving effects by waking up only terminals that need to monitor paging.

[0542] FIG. 14 illustrates a procedure of a method that may be performed by a first device according to an embodiment of the present disclosure. The embodiment of FIG. 14 may be combined with various embodiments of the present disclosure, and descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0543] Referring to FIG. 14, in step S1410, a first device may transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling. In step S1420, the first device may receive first information related to a group to which the first device is included from the second device. In step S1430, the first device may monitor repeated transmissions of a low power wake up signal performed by the second device based on the first device being included in the first group. For example, the non-access stratum signaling may be forwarded by the second device to a third device, and the first information may be determined by the third device based on the mobile device identifier.

[0544] For example, additionally, the first device may determine, based on the monitoring results for the repeated transmissions, that the low-power wake-up signal indicates that the first device is about to wake up; and based on the low-power wake-up signal indicating that the first device is about to wake up, monitor for a paging opportunity.

[0545] For example, the low power weather signal may include an indicator associated with the first group, and the indicator may include at least one of an identifier associated with the first group and a number of repetitions for the first group.

[0546] For example, additionally, the first device may transmit information related to terminal capabilities of the first device to the second device. For example, the first information is transmitted by the second device based on the information related to the terminal capabilities, and the information related to the terminal capabilities may include information related to the maximum value of a product of at least two of the following: i) the number of subgroups that can be supported, ii) the number of repeat transmissions that can be supported, iii) the number of different pieces of information that can be supported, and iv) the number of beams that can be supported, which are related to low-power weather signal reception by the first device.

[0547] For example, the end symbol of a first transmission included in the repetitive transmission of the low-power weather signal and the start symbol of a second transmission included in the repetitive transmission of the low-power weather signal may be contiguous.

[0548] For example, the end slot of the first transmission included in the repeated transmission of the low-power weather signal and the start slot of the second transmission included in the repeated transmission of the low-power weather signal may be consecutive.

[0549] For example, additionally, the first device may obtain information related to a plurality of low-power weather signal start time candidates from which the low-power weather signal can be received. For example, the start time candidate of the first transmission included in the repeated transmission of the low-power weather signal and the start time candidate of the second transmission included in the repeated transmission of the low-power weather signal may be consecutive in units of start time candidates.

[0550] For example, the first information may be transmitted from the third device to the second device, and reception of the first information may be performed based on forwarding of the first information by the second device.

[0551] For example, the repeated transmission may be performed by the second device based on the first information for at least one first group including the first group.

[0552] For example, a single transmission of a low power weather signal may be performed for at least one second group that is different from at least one first group.

[0553] For example, the second device may be a base station.

[0554] For example, the third device may include an access and mobility management function (AMF).

[0555] The above-described embodiment can be applied to various devices described below. First, the processor (102) of the first device (100) can control the transceiver (106) to transmit information related to the mobile device identifier of the first device (100) to the second device (200) via non-access stratum signaling. Then, the processor (102) of the first device (100) can control the transceiver (106) to receive first information related to a group to which the first device (100) is included from the second device (200). Then, the processor (102) of the first device (100) can monitor repeated transmissions of a low power wake up signal performed from the second device (200) based on the first device (100) being included in the first group. For example, the non-connected layer signaling may be forwarded by the second device (200) to the third device (300), and the first information may be determined by the third device (300) based on the mobile device identifier.

[0556] 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 coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the first device to: transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receive first information related to a group to which the first device belongs from the second device; and monitor, based on the first device's inclusion in the first group, a repetitive transmission of a low power wake up signal performed by the second device, wherein the non-access stratum signaling is forwarded by the second device to a third device, and the first information may be determined by the third device based on the mobile device identifier.

[0557] For example, additionally, the instructions may cause the first device to: determine, based on the monitoring results for the repeat transmission, that the low-power wake-up signal indicates that the first device is waking up; and monitor for a paging opportunity based on the low-power wake-up signal indicating that the first device is waking up.

[0558] For example, the low power weather signal may include an indicator associated with the first group, and the indicator may include at least one of an identifier associated with the first group and a number of repetitions for the first group.

[0559] For example, additionally, the commands may cause the first device to: transmit information related to terminal capabilities of the first device to the second device. For example, the first information is transmitted by the second device based on the information related to the terminal capabilities, and the information related to the terminal capabilities may include information related to the maximum value of a product of at least two of the following: i) the number of supportable subgroups, ii) the number of supportable repetition transmissions, iii) the number of supportable different pieces of information, and iv) the number of supportable beams, related to low power weather signal reception by the first device.

[0560] For example, the end symbol of a first transmission included in the repetitive transmission of the low-power weather signal and the start symbol of a second transmission included in the repetitive transmission of the low-power weather signal may be contiguous.

[0561] For example, the end slot of the first transmission included in the repeated transmission of the low-power weather signal and the start slot of the second transmission included in the repeated transmission of the low-power weather signal may be consecutive.

[0562] For example, additionally, the commands may cause the first device to: obtain information related to a plurality of low-power weather signal start time candidates from which the low-power weather signal can be received. For example, a start time candidate of a first transmission included in the repeated transmission of the low-power weather signal and a start time candidate of a second transmission included in the repeated transmission of the low-power weather signal may be consecutive in units of start time candidates.

[0563] For example, the first information may be transmitted from the third device to the second device, and reception of the first information may be performed based on forwarding of the first information by the second device.

[0564] For example, the repeated transmission may be performed by the second device based on the first information for at least one first group including the first group.

[0565] For example, a single transmission of a low power weather signal may be performed for at least one second group that is different from at least one first group.

[0566] For example, the second device may be a base station.

[0567] For example, the third device may include an access and mobility management function (AMF).

[0568] 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 coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receive first information related to a group to which the first device belongs from the second device; and monitor repetitive transmissions of a low power wake-up signal performed by the second device based on the first device's inclusion in the first group. For example, the non-access stratum signaling may be forwarded by the second device to a third device, and the first information may be determined by the third device based on the mobile device identifier.

[0569] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, cause a first device to: transmit information related to a mobile device identifier of the first device to a second device via non-access stratum signaling; receive first information related to a group to which the first device belongs from the second device; and monitor repetitive transmissions of a low power wake up signal from the second device based on the first device's inclusion in the first group, wherein the non-access stratum signaling is forwarded by the second device to a third device, and the first information is determined by the third device based on the mobile device identifier.

[0570] FIG. 15 illustrates a procedure of a method that may be performed by a second device according to an embodiment of the present disclosure. The embodiment of FIG. 15 may be combined with various embodiments of the present disclosure, and descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0571] Referring to FIG. 15, in step S1510, a second device may receive information related to a mobile device identifier of the first device from a first device via non-access stratum signaling. In step S1520, the second device may transmit information related to the mobile device identifier to a third device via non-access stratum signaling. In step S1530, the second device may receive, from the third device, first information related to a group including the first device. In step S1540, the second device may transmit the first information to the first device. In step S1550, the second device may perform repeated transmission of a low power wake up signal to the first group including the first device. For example, the first information may be determined by the third device based on the mobile device identifier.

[0572] For example, additionally, the second device may transmit a paging message at a paging opportunity based on the low power wake-up signal indicating that the first device is awake.

[0573] For example, the low power weather signal may include an indicator associated with the first group, and the indicator may include at least one of an identifier associated with the first group and a number of repetitions for the first group.

[0574] For example, additionally, the second device can receive information related to terminal capabilities of the first device from the first device. For example, the first information is transmitted based on the information related to the terminal capabilities, and the information related to the terminal capabilities can include information related to the maximum value of the product of at least two of the following: i) the number of subgroups that can be supported, ii) the number of repeat transmissions that can be supported, iii) the number of different pieces of information that can be supported, and iv) the number of beams that can be supported, which are related to low-power weather signal reception by the first device.

[0575] For example, the end symbol of a first transmission included in the repetitive transmission of the low-power weather signal and the start symbol of a second transmission included in the repetitive transmission of the low-power weather signal may be contiguous.

[0576] For example, the end slot of the first transmission included in the repeated transmission of the low-power weather signal and the start slot of the second transmission included in the repeated transmission of the low-power weather signal may be consecutive.

[0577] For example, additionally, the second device may obtain information related to a plurality of low-power weather signal start time candidates from which the low-power weather signal can be received. For example, the start time candidate of the first transmission included in the repeated transmission of the low-power weather signal and the start time candidate of the second transmission included in the repeated transmission of the low-power weather signal may be consecutive in units of start time candidates.

[0578] For example, the transmission of the first information may be forwarding of the first information.

[0579] For example, additionally, the second device may perform a single transmission of a low power weather signal to at least one second group that is different from the at least one first group.

[0580] For example, the second device may be a base station.

[0581] For example, the third device may include an access and mobility management function (AMF).

[0582] The above-described embodiment can be applied to various devices described below. First, the processor (202) of the second device (200) can control the transceiver (206) to receive information related to the mobile device identifier of the first device (100) from the first device (100) via non-access stratum signaling. Then, the processor (202) of the second device (200) can control the transceiver (206) to transmit information related to the mobile device identifier to the third device (300) via non-access stratum signaling. Then, the processor (202) of the second device (200) can control the transceiver (206) to receive first information related to a group including the first device (100) from the third device (300). And, the processor (202) of the second device (200) can control the transceiver (206) to transmit the first information to the first device (100). And, the processor (202) of the second device (200) can control the transceiver (206) to perform repeated transmission of a low power wake up signal to a first group including the first device (100). For example, the first information can be determined by the third device (300) based on the mobile device identifier.

[0583] 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 coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the second device to: receive, from a first device, information related to a mobile device identifier of the first device via non-access stratum signaling; transmit, to a third device, information related to the mobile device identifier via non-access stratum signaling; receive, from the third device, first information related to a group including the first device; transmit the first information to the first device; and perform repeated transmission of a low power wake up signal to a first group including the first device, wherein the first information may be determined by the third device based on the mobile device identifier.

[0584] For example, additionally, the instructions may cause the second device to: transmit a paging message at a paging opportunity based on the low power wake-up signal indicating that the first device is awake.

[0585] For example, the low power weather signal may include an indicator associated with the first group, and the indicator may include at least one of an identifier associated with the first group and a number of repetitions for the first group.

[0586] For example, additionally, the commands may cause the second device to: receive, from the first device, information related to terminal capabilities of the first device. For example, the first information may be transmitted based on the information related to the terminal capabilities, and the information related to the terminal capabilities may include information related to the maximum value of a product of at least two of the following: i) the number of supportable subgroups, ii) the number of supportable repetition transmissions, iii) the number of supportable different pieces of information, and iv) the number of supportable beams, which are related to low power weather signal reception by the first device.

[0587] For example, the end symbol of a first transmission included in the repetitive transmission of the low-power weather signal and the start symbol of a second transmission included in the repetitive transmission of the low-power weather signal may be contiguous.

[0588] For example, the end slot of the first transmission included in the repeated transmission of the low-power weather signal and the start slot of the second transmission included in the repeated transmission of the low-power weather signal may be consecutive.

[0589] For example, additionally, the commands may cause the second device to: obtain information related to a plurality of low-power weather signal start time candidates from which the low-power weather signal can be received. For example, the start time candidate of a first transmission included in the repeated transmission of the low-power weather signal and the start time candidate of a second transmission included in the repeated transmission of the low-power weather signal may be consecutive in units of start time candidates.

[0590] For example, the transmission of the first information may be forwarding of the first information.

[0591] For example, additionally, the commands may cause the second device to: perform a single transmission of a low power weather signal to at least one second group that is different from the at least one first group.

[0592] For example, the second device may be a base station.

[0593] For example, the third device may include an access and mobility management function (AMF).

[0594] The various embodiments of the present disclosure may be combined with each other.

[0595] Below, a description is given of devices to which various embodiments of the present disclosure can be applied.

[0596] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document may be applied to various fields requiring wireless communication / connectivity (e.g., 5G) between devices.

[0597] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0598] Fig. 16 illustrates 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.

[0599] 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 a 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 Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-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., an Advanced Air Mobility (AAM)). The XR device may include 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, a digital signage, a vehicle, a robot, etc. The portable device may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), 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 also be implemented as a wireless device, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0600] Here, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present disclosure may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present disclosure may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by 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 above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present disclosure can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0601] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can 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). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0602] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (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 base station-to-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 each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, based on various proposals of the present disclosure, at least some of 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.), and resource allocation processes can be performed.

[0603] FIG. 17 illustrates a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 17 may be combined with various embodiments of the present disclosure.

[0604] Referring to FIG. 17, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 16.

[0605] 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 a 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.

[0606] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). Furthermore, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from 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 perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a 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 via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0607] A second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0608] Hereinafter, the 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 one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts 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 operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0609] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a 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 operational 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. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0610] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0611] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can 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 coupled 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, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via 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 received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0612] FIG. 18 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of FIG. 18 can be combined with various embodiments of the present disclosure.

[0613] 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 operations / functions of FIG. 18 may be performed in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 17. The hardware elements of FIG. 18 may be implemented in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 17. For example, blocks 1010 to 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.

[0614] 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 can include a transport block (e.g., an UL-SCH transport block, a DL-SCH transport block). The wireless signal can be transmitted through various physical channels (e.g., a terminal-to-base station physical shared channel (e.g., PUSCH), a base station-to-terminal physical shared channel (e.g., PDSCH)).

[0615] Specifically, the codeword can be converted into a bit sequence scrambled by a scrambler (1010). The scramble sequence used for scrambling is generated based on an initialization value, and the initialization value may include ID information of the 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 a precoding matrix W of N*M. 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 complex modulation symbols. In addition, the precoder (1040) can perform precoding without performing transform precoding.

[0616] The resource mapper (1050) can map modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. The signal generator (1060) generates a wireless signal from the mapped modulation symbols, and the generated wireless signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) can include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0617] The signal processing process for receiving signals in a wireless device can be configured in reverse order of the signal processing process (1010 to 1060) of FIG. 18. For example, a wireless device (e.g., 100, 200 of FIG. 17) can receive wireless signals from the outside through an antenna port / transceiver. The received wireless signals can be converted into baseband signals through a signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Thereafter, the baseband signal can be restored to a codeword through a resource demapper process, a postcoding process, a demodulation process, and a descrambling process. The codewords can be restored to the original information blocks 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.

[0618] Figure 19 illustrates a wireless device according to an embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use case / service (see Figure 16). The embodiment of Figure 19 may be combined with various embodiments of the present disclosure.

[0619] 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 / units, 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 an additional element (140). The communication unit may include a communication circuit (112) and a 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 the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0620] The additional element (140) may be configured in various ways depending on the type of the 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 a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 16, 400), a base station (Fig. 16, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0621] In FIG. 19, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be interconnected entirely via a wired interface, or at least some may be wirelessly 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 wired, and the control unit (120) and the first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. 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 a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0622] Below, the implementation example of Fig. 19 is described in more detail with reference to the drawings.

[0623] FIG. 20 illustrates a mobile device according to an embodiment of the present disclosure. The mobile device may include a smartphone, a smart pad, a wearable device (e.g., a smartwatch, smartglasses), or a portable computer (e.g., a laptop, etc.). The mobile device may be referred to as a Mobile Station (MS), a User Terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT). The embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.

[0624] 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 a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130 / 140 of FIG. 19, respectively.

[0625] 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 components of the mobile device (100) to perform various operations. The control unit (120) can include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / codes / commands required for operating the mobile device (100). In addition, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the mobile device (100) and can include a wired / wireless charging circuit, a battery, etc. The interface unit (140b) can support connection between the mobile device (100) and other external devices. The interface unit (140b) can include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can input or output video information / signals, audio information / signals, data, and / or information input from 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.

[0626] For example, in the case of data communication, the input / output unit (140c) obtains information / signals (e.g., touch, text, voice, image, video) input by the user, and the obtained 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 other wireless devices or to a base station. In addition, the communication unit (110) can receive wireless signals from other wireless devices or base stations, and then restore the received wireless signals to the 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).

[0627] 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 car, a train, a manned or unmanned aerial vehicle (AV), a ship, or the like. The embodiment of FIG. 21 may be combined with various embodiments of the present disclosure.

[0628] 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 a part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 of FIG. 19, respectively.

[0629] 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, road side units, etc.), and servers. The control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations. The control unit (120) can include an ECU (Electronic Control Unit). The drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired / wireless charging circuit, a battery, 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 incline sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / backward 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 a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.

[0630] 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 route and driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can irregularly / periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles. In addition, 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 route and driving plan based on the newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving route, driving plan, etc. to the external server. External servers can predict traffic information data in advance using AI technology and other technologies based on information collected from vehicles or autonomous vehicles, and provide the predicted traffic information data to the vehicles or autonomous vehicles.

[0631] The claims set forth in this disclosure may be combined in various ways. For example, the technical features of the method claims of this disclosure may be combined and implemented as a device, and the technical features of the device claims of this disclosure may be combined and implemented as a method. Furthermore, the technical features of the method claims of this disclosure and the technical features of the device claims of this disclosure may be combined and 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 and implemented as a method.

Claims

1. In the method, A step of transmitting information related to a mobile device identifier of a first device to a second device via non-access stratum signaling; A step of receiving first information related to a group including the first device from the second device; and A step of monitoring repetitive transmission of a low power wake up signal performed from the second device based on the first device being included in the first group, The above non-connected layer signaling is forwarded by the second device to the third device, and A method wherein the first information is determined by the third device based on the mobile device identifier.

2. In paragraph 1, A step of determining that the low-power weather signal indicates the weather of the first device based on the monitoring result for the above repeated transmission; and A method further comprising the step of monitoring a paging opportunity based on the low power weather signal indicating that the first device is awake.

3. In paragraph 1, The above low power weather signal comprises an indicator associated with the first group, and A method wherein the indicator comprises at least one of an identifier associated with the first group and a number of repetitions for the first group.

4. In paragraph 1, Further comprising a step of transmitting information related to terminal capabilities of the first device to the second device, The first information is transmitted by the second device based on information related to the terminal capability, and The information related to the terminal capability may include information related to the maximum value of the product of at least two of the following: i) the number of supportable subgroups, ii) the number of supportable repetition transmissions, iii) the number of supportable different information, and iv) the number of supportable beams, in relation to low-power weather signal reception of the first device.

5. In paragraph 1, A method wherein the end symbol of a first transmission included in the repetitive transmission of the low-power weather signal and the start symbol of a second transmission included in the repetitive transmission of the low-power weather signal are contiguous.

6. In paragraph 1, A method wherein the end slot of a first transmission included in the repetitive transmission of the low-power weather signal and the start slot of a second transmission included in the repetitive transmission of the low-power weather signal are consecutive.

7. In paragraph 1, Further comprising a step of obtaining information related to a plurality of low-power weather signal start time candidates from which low-power weather signals can be received, A method in which a start point candidate of a first transmission included in the repeated transmission of the low-power weather signal and a start point candidate of a second transmission included in the repeated transmission of the low-power weather signal are continuous in units of start point candidates.

8. In paragraph 1, The first information is transmitted from the third device to the second device, and A method wherein the reception of the first information is performed based on forwarding of the first information by the second device.

9. In paragraph 1, A method wherein the above repeated transmission is performed by the second device based on the first information for at least one first group including the first group.

10. In paragraph 1, A method wherein a single transmission of a low power weather signal is performed for at least one second group different from at least one first group.

11. In paragraph 1, A method wherein the second device is a base station.

12. In paragraph 1, A method wherein the third device comprises an access and mobility management function (AMF).

13. In paragraph 1, A method, wherein the method is performed by the first device.

14. In the first device, At least one transmitter / receiver; at least one processor; and At least one memory connected to the at least one processor and storing instructions, The above instructions, based on being executed by the at least one processor, cause the first device to: Transmitting information related to the mobile device identifier of the first device to the second device via non-access stratum signaling; Receiving first information related to a group including the first device from the second device; and Based on the first device being included in the first group, to monitor the repetitive transmission of a low power wake up signal performed from the second device, The above non-connected layer signaling is forwarded by the second device to the third device, and A first device, wherein the first information is determined by the third device based on the mobile device identifier.

15. In a processing device set to control the first device, at least one processor; and At least one memory connected to the at least one processor and storing instructions, The above instructions, based on being executed by the at least one processor, cause the first device to: Transmitting information related to the mobile device identifier of the first device to the second device via non-access stratum signaling; Receiving first information related to a group including the first device from the second device; and Based on the first device being included in the first group, to monitor the repetitive transmission of a low power wake up signal performed from the second device, The above non-connected layer signaling is forwarded by the second device to the third device, and A processing device wherein the first information is determined by the third device based on the mobile device identifier.

16. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the first device to: Transmitting information related to the mobile device identifier of the first device to the second device via non-access stratum signaling; Receiving first information related to a group including the first device from the second device; and Based on the first device being included in the first group, to monitor the repetitive transmission of a low power wake up signal performed from the second device, The above non-connected layer signaling is forwarded by the second device to the third device, and A non-transitory computer-readable storage medium, wherein the first information is determined by the third device based on the mobile device identifier.

17. In the method, A step of receiving, from a first device, information related to a mobile device identifier of the first device via non-access stratum signaling; A step of transmitting information related to the mobile equipment identifier to a third device via non-access layer signaling; A step of receiving first information related to a group including the first device from the third device via non-connection layer signaling; A step of transmitting the first information to the first device via non-connection layer signaling; and A step of performing repeated transmission of a low power wake up signal to a first group including the first device, A method wherein the first information is determined by the third device based on the mobile device identifier.

18. In paragraph 17, A method further comprising the step of transmitting a paging message at a paging opportunity based on the low power weather signal indicating that the first device is awake.

19. In the second device, At least one transmitter / receiver; at least one processor; and At least one memory connected to the at least one processor and storing instructions, The above instructions, based on being executed by the at least one processor, cause the second device to: From a first device, receive information related to a mobile device identifier of the first device via non-access stratum signaling; To cause the third device to transmit information related to the mobile device identifier via non-access layer signaling; From the third device, receive first information related to a group including the first device via non-connection layer signaling; To transmit the first information to the first device via non-connection layer signaling; and To the first group including the first device, perform repeated transmission of a low power wake up signal, A second device, wherein the first information is determined by the third device based on the mobile device identifier.

20. In paragraph 19, A second device further comprising the step of transmitting a paging message at a paging opportunity based on the low power weather signal indicating that the first device is awake.

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