Method and device for transmitting / receiving signal in wireless communication system

Abstract

In order to adjust the number of terminals sharing one LP-WUS, the number of terminals to which the same monitoring resource is allocated (the number of terminals sharing one LP-WUS) is adjusted. In addition, disclosed are: a method for allocating a code point range for each terminal by using a code point; and a method for assigning a terminal for each bit by configuring a bitmap. Disclosed is a method for configuring a plurality of terminals into subgroups and allocating the same code point / bitmap thereto if the number of terminals sharing one LP-WUS is greater than the number of terminals expressible by a code point / bitmap.

Description

Method and device for transmitting and receiving signals in a wireless communication system

[0001] This specification relates to methods and devices used in wireless communication systems.

[0002] Wireless communication systems are being widely deployed to provide various types of communication services, such as voice and data. Generally, a wireless communication system is a multiple access system capable of supporting communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.). Examples of multiple access systems include 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).

[0003] The technical problem to be solved by the present specification is to provide a method for efficiently transmitting and receiving wireless communication signals and an apparatus for doing so.

[0004] The technical challenges are not limited to those described above, and other technical challenges can be inferred from the embodiments.

[0005] The present specification provides a method and apparatus for transmitting and receiving signals in a wireless communication system.

[0006] In one aspect of the present specification, a method by a terminal is provided, comprising: receiving setting information for a signal; receiving the signal based on the setting information; and monitoring a PDCCH (Physical Downlink Control Channel) based on the reception of the signal, wherein the signal comprises N information bits, the N information bits are associated with one of 2^N code points, and the setting information comprises information on L code points for the terminal among the 2^N code points.

[0007] In another aspect of the present specification, a device for performing the method comprises a terminal, a processor, and a storage medium.

[0008] In another aspect of the present specification, a method by a base station is provided, comprising: a step of transmitting configuration information for a signal; a step of transmitting a signal based on the configuration information; and a step of transmitting a PDCCH (Physical Downlink Control Channel) based on the transmission of the signal, wherein the signal comprises N information bits, the N information bits are associated with one of 2^N code points, and the configuration information comprises information on L code points for a specific terminal among the 2^N code points.

[0009] In another aspect of the present specification, a base station, a processor, and a storage medium are provided as an apparatus for performing the method.

[0010] The above devices may include at least a terminal, a network, and an autonomous vehicle capable of communicating with other autonomous vehicles other than the device.

[0011] The embodiments of this specification described above are merely some of the preferred embodiments of this specification, and various embodiments reflecting the technical features can be derived and understood by those skilled in the art based on the detailed description.

[0012] According to one embodiment of the present specification, when a signal is transmitted and received between communication devices, there is an advantage that more efficient signal transmission and reception can be performed through an operation differentiated from the prior art.

[0013] The technical effects are not limited to those described above, and other technical effects may be inferred from the examples.

[0014] Figure 1 illustrates the structure of a radio frame.

[0015] Figure 2 illustrates a resource grid of slots.

[0016] FIG. 3 illustrates a communication procedure between a terminal and a base station applicable to the present disclosure.

[0017] FIGS. 4 to 8 are drawings for explaining a signal transmission and reception method according to an embodiment of the present disclosure.

[0018] FIGS. 9 to 11 illustrate devices according to embodiments of the present disclosure.

[0019] The following technologies can be used in various wireless access systems such as CDMA, FDMA, TDMA, OFDMA, and SC-FDMA. CDMA can be implemented using wireless technologies such as UTRA (Universal Terrestrial Radio Access) or CDMA2000. TDMA can be implemented using wireless technologies such as GSM (Global System for Mobile Communications), GPRS (General Packet Radio Service), and EDGE (Enhanced Data Rates for GSM Evolution). OFDMA can be implemented using wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (Evolved UTRA). UTRA is part of the UMTS (Universal Mobile Telecommunications System). 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) is part of E-UMTS (Evolved UMTS) using E-UTRA, and LTE-A (Advanced) / LTE-A pro is an evolved version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an evolved version of 3GPP LTE / LTE-A / LTE-A pro.

[0020] For the sake of clarity, the description is based on 3GPP communication systems (e.g., LTE, NR), but the technical scope of this specification is not limited thereto. LTE refers to technology from 3GPP TS 36.xxx Release 8 onwards. Specifically, LTE technology from 3GPP TS 36.xxx Release 10 onwards is referred to as LTE-A, and LTE technology from 3GPP TS 36.xxx Release 13 onwards is referred to as LTE-A pro. 3GPP NR refers to technology from TS 38.xxx Release 15 onwards. LTE / NR may be referred to as a 3GPP system. "xxx" indicates a specific standard document number. LTE / NR may be collectively referred to as a 3GPP system. Regarding background technology, terms, abbreviations, etc. used in the description of this specification, reference may be made to matters described in previously published standard documents. For example, the following documents may be referenced.

[0021] 3GPP NR

[0022] - 38.211: Physical channels and modulation

[0023] - 38.212: Multiplexing and channel coding

[0024] - 38.213: Physical layer procedures for control

[0025] - 38.214: Physical layer procedures for data

[0026] - 38.300: NR and NG-RAN Overall Description

[0027] - 38.331: Radio Resource Control (RRC) protocol specification

[0028] Figure 1 illustrates the structure of a wireless frame used in NR.

[0029] In NR, uplink (UL) and downlink (DL) transmissions consist of frames. A radio frame has a length of 10 ms and is defined as two 5 ms half-frames (HF). A half-frame is defined as five 1 ms subframes (SF). A subframe is divided into one or more slots, and the number of slots within a subframe depends on the subcarrier spacing (SCS). Each slot contains 12 or 14 OFDM(A) symbols depending on the cyclic prefix (CP). When normal CP is used, each slot contains 14 symbols. When extended CP is used, each slot contains 12 symbols. Here, the symbols may include OFDM symbols (or CP-OFDM symbols) or SC-FDMA symbols (or DFT-s-OFDM symbols).

[0030] Table 1 illustrates how the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS when a standard CP is used.

[0031] [Table 1]

[0032]

[0033] Table 2 illustrates how the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS when an extended CP is used.

[0034] [Table 2]

[0035]

[0036] In an NR system, OFDM(A) numerology (e.g., SCS, CP length, etc.) can be configured differently among multiple cells merged into a single terminal (User Equipment; UE). Accordingly, the (absolute time) interval of a time resource (e.g., SF, slot, or TTI) (collectively referred to as TU (Time Unit) for convenience) composed of the same number of symbols can be configured differently among the merged cells.

[0037] NR supports multiple OFDM (Orthogonal Frequency Division Multiplexing) numerologies (e.g., subcarrier spacing, SCS) to support various 5G services. For example, if the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and if the SCS is 30 kHz / 60 kHz, it can support dense-urban, lower latency, and wider carrier bandwidth.

[0038] The NR frequency band is defined by two types of frequency ranges (FR) (FR1 / FR2). FR1 / FR2 can be configured as shown in Table 3 below. Additionally, FR2 can refer to millimeter wave (mmW).

[0039] [Table 3]

[0040]

[0041] Figure 2 illustrates the slot structure of an NR frame.

[0042] A slot contains multiple symbols in the time domain. For example, in the case of a standard CP, one slot contains 14 symbols, and in the case of an extended CP, one slot contains 12 symbols. A carrier contains multiple subcarriers in the frequency domain. A Resource Block (RB) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. Multiple RB interlacs (simply interlacs) can be defined in the frequency domain. An interlac m∈{0, 1, ..., M-1} can be composed of (common) RBs {m, M+m, 2M+m, 3M+m, ...}. M represents the number of interlacs. A Bandwidth Part (BWP) is defined as multiple consecutive RBs (e.g., physical RB, PRB) in the frequency domain and can correspond to a single OFDM numerology (e.g., SCS(u), CP length, etc.). A carrier wave may contain up to N (e.g., 5) BWPs. Data communication is performed through the active BWPs, and only one BWP can be active for a single terminal within a single cell / carrier wave. In the resource grid, each element is referred to as a Resource Element (RE), and one modulation symbol can be mapped to it.

[0043] In a wireless communication system, a terminal receives information from a base station via the downlink (DL) and transmits information to the base station via the uplink (UL). The information transmitted and received by the base station and the terminal includes data and various control information, and various physical channels and signals exist depending on the type and purpose of the information being transmitted and received. A physical channel corresponds to a set of resource elements (REs) that carry information originating from the upper layer. A physical signal corresponds to a set of resource elements (REs) used by the physical layer (PHY), but it does not carry information originating from the upper layer. The upper layer includes the MAC (Medium Access Control) layer, RLC (Radio Link Control) layer, PDCP (Packet Data Convergence Protocol) layer, RRC (Radio Resource Control) layer, etc.

[0044] DL physical channels include PBCH (Physical Broadcast Channel), PDSCH (Physical Downlink Shared Channel), and PDCCH (Physical Downlink Control Channel). DL physical signals include DL RS (Reference Signal), PSS (Primary Synchronization Signal), and SSS (Secondary Synchronization Signal). DL RS includes DM-RS (Demodulation RS), PT-RS (Phase-tracking RS), and CSI-RS (Channel-state Information RS). UL physical channels include PRACH (Physical Random Access Channel), PUSCH (Physical Uplink Shared Channel), and PUCCH (Physical Uplink Control Channel). UL physical signals include UL RS. UL RS includes DM-RS, PT-RS, and SRS (Sounding RS).

[0045] The base station can be, for example, gNodeB.

[0046] 6G network architecture

[0047] FIG. 3 illustrates a communication procedure between a terminal and a base station applicable to the present disclosure. FIG. 3 illustrates the operation of a terminal (100) and a base station (200) transmitting and / or receiving data, and the operation performed prior to this.

[0048] Referring to FIG. 3, in step 101, the terminal (100) and the base station (200) perform synchronization. For example, the terminal (100) performs an initial cell search operation. Specifically, the terminal (100) can detect at least one synchronization signal transmitted from the base station (200) according to a predefined rule. Here, the synchronization signal may include a plurality of synchronization signals (e.g., primary synchronization signal, secondary synchronization signal) classified according to structure or use. Through this, the terminal (100) can identify the boundaries of the frame, subframe, slot, and / or symbol of the base station (200) and obtain information about the base station (200) (e.g., cell identifier).

[0049] In step 103, the terminal (100) obtains system information transmitted from the base station (200). The system information is information related to the attributes, characteristics, and / or capabilities of the base station (200) required to connect to the base station (200) and use the service, and can be classified according to content (e.g., whether it is essential for connection), transmission structure (e.g., channel used, whether it is provided on-demand), etc., and can be classified, for example, into a master information block (MIB) and a system information block (SIB). If necessary, the terminal (100) may transmit a signal requesting the system information prior to receiving the system information. However, the request and provision of the system information may be performed after the random access procedure described later.

[0050] In step 105, the terminal (100) and the base station (200) perform a random access procedure. The terminal (100) may transmit and / or receive at least one message for the random access procedure (e.g., random access preamble, RAR (random access response) message, etc.) based on information related to the random access channel of the base station (200) obtained through system information (e.g., channel location, channel structure, structure of supported preamble, etc.). For example, the terminal (100) may transmit a preamble (e.g., MSG1) through the random access channel, receive a RAR message (e.g., MSG2), transmit a message (e.g., MSG3) containing information related to the terminal (100) (e.g., identification information) to the base station (200) using scheduling information included in the RAR message, and receive a message (e.g., MSG4) for contention resolution and / or connection establishment. As another example, MSG1 and MSG3 can be transmitted and received as a single message, or MSG2 and MSG4 can be transmitted and received as a single message.

[0051] In step 107, the terminal (100) and the base station (200) perform signaling of control information. Here, the control information may be defined in various layers, such as a layer that controls the connection (e.g., a radio resource control (RRC) layer), a layer that handles mapping between logical channels and transmission channels (e.g., a media access control (MAC) layer), and a layer that handles physical channels (e.g., a physical (PHY) layer). For example, the terminal (100) and the base station (200) may perform at least one of signaling to establish a connection, signaling to determine settings related to communication, and signaling to indicate allocated resources.

[0052] In step 109, the terminal (100) and the base station (200) transmit and / or receive data. That is, the terminal (100) and the base station (200) can process, transmit and / or receive data based on the signaling of control information. For example, when transmitting data, the terminal (100) or the base station (200) may perform at least one of channel encoding, rate matching, scrambling, constellation mapping, layer mapping, waveform modulation, antenna mapping, and resource mapping on the information bits. Conversely, when receiving data, the terminal (100) or the base station (200) may perform at least one of signal extraction from resources, antenna-specific waveform demodulation, signal placement considering layer mapping, constellation demapping, descrambling, and channel decoding.

[0053] 6G System Core Technology

[0054] As core implementation technologies for 6G systems, technologies such as artificial intelligence (AI), THz (Terahertz) communication, optical wireless technology, FSO backhaul network, massive MIMO 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.

[0055] LP-WUS

[0056] The contents examined above can be applied in combination with the proposed methods described below, or can be supplemented to clarify the technical characteristics of the proposed methods.

[0057] In addition, the methods described below can be applied in the same way to the NR system (licensed band) or shared spectrum described above, and it goes without saying that the technical concept proposed in this specification can be modified or replaced to fit the terms, expressions, structures, etc. defined in each system so that it can be implemented in the system as well.

[0058] In the Rel-18 NR standard, discussions are underway to introduce LP-WUS (low power wake-up signal) and LP-WUR (low power wake-up receiver or low power wake-up radio), a separate receiver capable of receiving it, as a method for reducing power consumption that differs slightly from the terminal power consumption reduction techniques introduced or supported in Rel-16 / 17 and others. When the receiver within the terminal (the receiver in the downlink) in existing NR systems is referred to as MR (Main radio / receiver), LP-WUR refers to a separate receiver (i.e., companion radio / receiver) that can be introduced to reduce the power consumption of the MR. LP-WUR can be simply represented as LR.

[0059] LP-WUS is modulated with OOK (On-Off Keying) to align with the slot or symbol structure of the time axis, but can be transmitted without aligning with the RE structure of the frequency axis. LP-WUS is configured to have a signal or no signal within a specific time interval, and the terminal can receive the signal simply by energy detection within that specific time interval. A sequence for spectrum flattening may be superimposed on the OOK symbol of the LP-WUS, or an OFDM sequence for extending transmission coverage or transmitting additional information may be superimposed.

[0060] The following describes the options for LP-WUS waveform generation methods. These can be understood as different methods for MC-OOK (Multi-carrier On-Off Keying) and MC-FSK (Multi-carrier Frequency Shift Keying) waveform generation.

[0061] Figures 4 and 5 show options for the LP-WUS waveform generation method.

[0062] Figures 4 and 5 relate to MC-ASK (amplitude shift keying) waveform generation. In Figures 4 and 5, K is the size of the iFFT (inverse fast Fourier transform) of CP-OFDMA (Cyclic Prefix-Orthogonal Frequency Division Multiplexing Access), and N is the number of subcarriers used in LP-WUS, including potential guard bands.

[0063] Figure 4 shows option OOK-1.

[0064] In option OOK-1, 1 OFDM symbol contains a single bit. For the subcarriers of the LP-WUS, OOK=1 means that all subcarriers are modulated. OOK=0 means that all subcarriers are zero power (from a baseband perspective).

[0065] Figure 5 shows option OOK-4.

[0066] Referring to Fig. 5, in option OOK-4, the M-bit OOK in the time domain is transformed. N subcarriers of OOK-1 are generated by the transformation (DFT / Least Square). N' samples are generated from the M bits. Signal modification may or may not be used. Truncation or other additional modifications may or may not be used. If not used, N and N' are the same. N' can be equal to K.

[0067] In FIGS. 4 and 5, the modulated subcarriers may be, for example, QAM (Quadrature Amplitude Modulation) symbols, sequences, or other signals.

[0068] The subcarriers of the potential guard band are zero power (from the baseband perspective). Optionally, of the two additional segments, one can always be modulated and the other can always be transmitted as zero power (from the baseband perspective).

[0069] In addition to OOK-1 and OOK-4, OOK-2 and OOK-3 are available as options.

[0070] Symbols modified in the OOK method may be referred to as OOK symbols. For convenience of writing below, "OOK-1 and / or OOK-4" may be simply denoted as "OOK-1 / 4".

[0071] For OOK-1, one OOK symbol can be matched to one OFDM symbol interval, and for OOK-4, M OOK symbols can be mapped to one OFDM symbol interval. Therefore, 1 bit can be transmitted per OFDM symbol for OOK-1, and M bits can be transmitted per OFDM symbol for OOK-4. If MC (Manchester encoding) is additionally used in LP-WUS, twice the number of OFDM symbols may be required to transmit the same bit. Meanwhile, a terminal (including LP-WUR) that receives LP-WUS can perform an action to wake up MR; to do this, an ID (identifier) ​​capable of distinguishing each terminal or terminal (sub)group may be included in the LP-WUS signal. The UE ID may use (for example) the 5G-S-TMSI value or a value reduced by modulo operation. Depending on the ID used, this value may be approximately 48 bits. Accordingly, a significant number of OFDM symbols may be used to transmit a UE ID via OOK-1 / 4. For example, assuming the use of MC to transmit a 48-bit UE ID, 96 OFDM symbols are required for OOK-1. If the part containing information such as the UE ID is referred to as the message part of the LP-WUS, and a preamble part is transmitted along with it to assist in the reception of the message part, the number of required OFDM symbols may increase. The preamble part can convey information necessary for the LR to detect and decode the message part. Figure 6 illustrates an example of LP-WUS transmission including a preamble part and a message part.

[0072] Meanwhile, the LP-WUS signal may be used in conjunction with the OOK waveform with an overlaid sequence. Depending on how the overlaid sequence is overlaid on each OOK signal or OFDM signal, it may affect the LP-WUS transmission time and / or the frequency resources occupied by the LP-WUS. Additionally, if information is transmitted through the overlaid sequence, this may serve as a method to expand the utilization of the LP-WUS signal. However, not all LP-WUSs can detect / decode the overlaid sequence. If the overlaid sequence modulates each subcarrier in the frequency domain, only LP-WUSs possessing Fast Fourier Transform (FFT) and / or frequency domain sequence correlation capabilities can receive the overlaid sequence. Even if the sequence is overlaid on each OOK symbol or OFDM symbol in the time domain, only LP-WUSes possessing time domain sequence correlation capabilities can receive the sequence. Since the LP-WUR of the lowest complexity may only distinguish between ON / OFF of OOK symbols, the overlaid sequence needs to be designed to take these various types of LP-WURs into account.

[0073] Various candidates are being considered for the architecture of LP-WUR, and depending on the architecture adopted, the power consumption of LP-WUR in the on and off states may vary.

[0074] At this time, the power consumption of the LP-WUR in the ON state may be at a level that cannot be ignored, or for other reasons, the terminal may be required to activate or deactivate the LP-WUR. To support this, entry conditions for the terminal to enter the activated state of the LP-WUR and exit conditions for the terminal to exit the activated state may be defined.

[0075] A WUR capable of only energy detection can be defined as LP-WUR Type 1, and a WUR capable of sequence detection can be defined as LP-WUR Type 2. LP-WUR Type 1 is configured at a low cost and can receive only information transmitted through the payload of OOK symbols. LP-WUR Type 2 is configured at a higher cost than LP-WUR Type 1 and can detect an overlaid OFDM sequence in addition to the payload of OOK symbols. LP-WUR Type 2 can also receive PSS / SSS, which are signals related to MR.

[0076] Meanwhile, a separate LP-SS (low power synchronization signal) may be defined and transmitted for time / frequency synchronization required for receiving the LP-WUR transmitted from the LP-WUR. The LP-SS may be a signal / waveform generated according to an OOK or FSK waveform generation method (similar to the LP-WUS), and an overlaid sequence may be applied. The LP-SS may be a signal transmitted periodically or aperiodisically. Based on the LP-SS, the LP-WUR may measure the power of the received signal, etc., to offload or relax the RRM measurement of the MR.

[0077] In the proposal below, the term "occasion" may refer to a transmission occasion (TO) where the base station transmits a signal, or a monitoring occasion (MO) where the receiver (such as an LP-WUR) monitors the signal, depending on the context. Since TO signifies an opportunity for a signal to be transmitted, the signal may not be transmitted at that location (depending on the configuration or the needs of the base station). Since MO signifies an opportunity to monitor the signal, the receiver may not monitor the signal at that location (depending on the configuration or the needs / situations of the base station / terminal). Additionally, for the sake of convenience, even if expressed simply as MO or TO, MO, TO, or MO and TO may be indicated depending on the proposed method and context.

[0078] In the proposal below, setting the opportunity for LP-SS / LP-WUS can be interpreted as setting one or more of the period, starting time, ending time, duration, offset within the period, and the frequency at which the corresponding signal is transmitted.

[0079] Generally, terminals in RRC_CONNECTED mode (hereinafter referred to as CONNECTED mode or connection mode) consume a significant amount of power for PDDCH monitoring. Since the terminal monitors the PDCCH using MR, the longer the MR remains in a sleep state, the more power the terminal can reduce. To reduce power consumption, DRX operations, WUS (wake-up signal), and PDCCH monitoring adaptation operations have been introduced. All of these operations were introduced to reduce the time the terminal monitors the PDCCH and to guarantee the sleep time of the MR, thereby reducing the terminal's power consumption.

[0080] By utilizing LP-WUS / LP-WUR, the frequency of PDCCH monitoring performed by the terminal's MR can be reduced. Since the terminal's LP-WUR operates at relatively low power, it consumes less power compared to MR. A terminal in CONNECTED mode can reduce power consumption by operating the MR in a (deep / light / micro) sleep state, thereby not performing PDCCH monitoring. Additionally, if the terminal receives LP-WUS via LR and wakes up the MR based on the instructions in the received signal, the MR's sleep time can be extended. Furthermore, the terminal can receive other instructions via LP-WUS and operate the MR accordingly. For example, the terminal can receive instructions via LP-WUS to temporarily switch the MR to a sleep state.

[0081] When the terminal's PDCCH monitoring status is indicated via LP-WUS, the frequency of PDCCH monitoring performed by the terminal's MR can be adjusted. For example, when the MR is off or in a sleep state, the terminal receives LP-WUS using LP-WUR. The terminal activates the MR to perform PDCCH monitoring only when the correct LP-WUS is received. By triggering the operation of the MR via LP-WUS, unnecessary PDCCH monitoring is reduced. Lowering the frequency of PDCCH monitoring can reduce the terminal's power consumption.

[0082] The LP-WUS received by the terminal may be configured to be shared by one or more terminals. In this case, the amount of information that can be transmitted through the LP-WUS may be determined based on the channel environment and required reception performance, and specifically, is determined by the number of OOK symbols and the number of slots through which the symbols are transmitted.

[0083] The LP-WUS reception performance of a terminal may vary depending on the amount of information transmitted by the base station and the number of terminals sharing it. For example, if the amount of information that an LP-WUS can transmit is 3 bits, reception performance may be degraded in a situation where three terminals share and receive a single LP-WUS compared to a situation where a single terminal exclusively receives the LP-WUS. In other words, the reception performance of a terminal may vary depending on how many bits each terminal allocates and utilizes as their own PDCCH monitoring activation information within the total amount of information transmitted through the LP-WUS.

[0084] Accordingly, the present disclosure proposes a method for configuring an LP-WUS that can be shared by one or more terminals. In particular, methods for configuring the LP-WUS in response to changes in the number of terminals targeted by the LP-WUS are proposed. Such a configuration may be variably set by a base station or pre-configured.

[0085] In various examples of the present disclosure, " / " and "," should be interpreted as indicating "and / or." For example, "A / B" may mean "A and / or B." Furthermore, "A, B" may mean "A and / or B." Furthermore, "A / B / C" may mean "at least one of A, B and / or C." Furthermore, "A, B, C" may mean "at least one of A, B and / or C."

[0086] The present disclosure proposes a method for configuring information included in an LP-WUS that is receivable by one or more terminals.

[0087] The operation of a terminal triggering PDCCH monitoring based on a received LP-WUS can be implemented in various ways. An example of a method for triggering PDCCH monitoring by LP-WUS for a terminal configured with C-DRX (Connected mode discontinuous reception) is as follows.

[0088] Example 1) The terminal may receive LP-WUS in a time interval preceding the start time of the periodically configured drx-onDurationTimer to be instructed on whether to start the drx-onDurationTimer. (This may be an operation that replaces the DCP.)

[0089] Example 2) The terminal can receive LP-WUS outside of the existing C-DRX active time to be instructed to an additional potential PDCCH monitoring period in addition to the existing periodic drx-onDurationTimer.

[0090] Example 1 can be understood as an operation where LP-WUS replaces the wake-up indication of DCP. For example, when LP-WUS is received instead of the existing DCI format 2_6, it may indicate whether to start the periodically configured drx-onDurationTimer. During periods when there is no potential DRX active time, the terminal keeps the MR in a sleep state to reduce power consumption and operates LP-WUR to receive the LP-WUS. Based on the reception of LP-WUS, the start of drx-onDurationTimer may be determined according to the preset DRX operation.

[0091] Referring to FIG. 6, the terminal receives the LP-WUS during a time interval preceding the start time of drx-onDurationTimer (FG101). This may be an operation that replaces the conventional DCP. Subsequently, the terminal experiences a periodic DRX active time (e.g., the interval during which drx-onDurationTimer is operating) in response to instructions from the LP-WUS (FG102). During the opportunity for the LP-WUS to be monitored, the terminal may fail to monitor the LP-WUS (FG103). This may be because the base station did not actually transmit the LP-WUS, or because the terminal failed to receive the LP-WUS. If the LP-WUS is not received, the terminal may not perform the relevant operation during the periodic DRX active time (i.e., the operation of drx-onDurationTimer) (FG104).

[0092] Example 2 can be understood as an operation in which, if LP-WUS is received outside the configured C-DRX active time, an additional potential PDCCH monitoring period is instructed. Since the operation of Example 2 involves instructing PDCCH monitoring outside the existing C-DRX active time, it differs from the existing operation, and constraints can be established accordingly. For instance, a terminal configured with Example 2 may be expected to monitor LP-WUS according to a configured period. When the terminal receives LP-WUS, a specific timer starts, and the terminal can perform PDCCH monitoring while that timer is running. This operation of Example 2 can be configured so as not to affect operations related to existing DRX timers, excluding drx-onDurationTimer.

[0093] Additionally, it can be assumed that the RRM (Radio Resource Management), RLM (Radio Link Monitoring), and BFD (Beam Failure Detection) measurement requirements associated with the existing DRX operation remain unchanged. Regarding periodic CSI / L1-RSRP reporting, the terminal may be configured not to report when no wake-up is instructed, or to report regardless of whether a wake-up is instructed. If only the operation of Example 2 is configured, the existing C-DRX cycle and PDCCH monitoring by drx-onDurationTimer are not triggered while the terminal is monitoring the LP-WUS.

[0094] Meanwhile, if the terminal has both the operations of Example 1 and Example 2 configured, the terminal performs PDCCH monitoring according to the conventional standard document for the previously configured C-DRX, and in other sections, it may be instructed to perform additional PDCCH monitoring through LP-WUS.

[0095] According to the exemplified operations, the LP-WUS received by a terminal may be shared by one or more terminals. In other words, one or more terminals may simultaneously receive a single LP-WUS and, based on this, perform a PDCCH monitoring operation according to Example 1 or Example 2 described above.

[0096] The PDCCH monitoring activation instruction can be regarded as a 1-bit amount of information instructing the corresponding terminal to wake up or not wake up. When the terminal receives a wake-up instruction, the terminal performs PDCCH monitoring using MR. Therefore, the more information is allocated to a specific terminal within a shared LP-WUS, the better the reception performance of that terminal can be expected to be. For example, if 1-bit wake-up instruction information is transmitted repeatedly as 3-bits, the terminal can receive the instruction more accurately. Terminals sharing a single LP-WUS may be referred to as a 'UE Group'.

[0097] Assuming that the amount of information in the LP-WUS is fixed based on the resource environment in which the LP-WUS is transmitted (e.g., BWP, transmission symbols, and slots), the base station can variably configure the payload of the LP-WUS based on the channel environment of each terminal and the required reception performance. A code-point based method or a bitmap based method may be used as the payload configuration method for the LP-WUS, and a wake-up delay for each terminal may be taken into account.

[0098] Meanwhile, although the methods proposed in this disclosure are described primarily for the purpose of instructing the activation of PDCCH monitoring (or C-DRX active time operation) of a terminal via LP-WUS, the same instruction and setting mechanism can be extended and applied as a method for controlling Cell Discontinuous Transmission (Cell DTX). Wake-up or non-wake-up instructions within this specification may be interpreted as being substituted for instructions regarding the active time and inactive time in Cell DTX operation. For example, the operations related to the wake-up instruction (or DRX active time start instruction) transmitted to each terminal via code points or bitmaps, etc., in Method 2 and Method 3 described below, can be similarly applied to the transition to the active time or inactive time for Cell DTX.

[0099] For example, the Cell DTX may be configured to start or end via a wake-up instruction from the LP-WUS. Additionally, a separate Cell DTX start / end indicator may be included and transmitted in the LP-WUS. Based on the wake-up instruction and / or the separate Cell DTX start / end indicator, the configured Cell DTX active time may start or end for one or more terminals (or a group of terminals) that receive the LP-WUS. The start and / or end times of the Cell DTX active time may be set to be the same as the terminal's PDCCH monitoring activation time, or may be set to have a certain time gap through an offset. Additionally, the Cell DTX active time may end simultaneously with the terminal configured with the operation of Example 2 receiving the LP-WUS and initiating a new timer for PDCCH monitoring activation.

[0100] Method 1: A method for variably adjusting the number of terminals capable of simultaneously receiving a single LP-WUS.

[0101] The base station can variably set the number of terminals sharing (or receiving on the same time resource) a single LP-WUS. The LP-WUS for PDCCH monitoring operations of terminals in connected mode can be shared and transmitted by multiple terminals camping in the same cell. The base station can determine specifically which terminals will share a single LP-WUS resource through configuration information.

[0102] For example, the first LP-WUS transmitted from the first BWP (BWP A) may be configured to be shared by three terminals, and the second LP-WUS transmitted from the second BWP (BWP B) may be configured to be shared by two terminals. This grouping may be determined by considering the reception performance or channel environment of each terminal. Since the terminals sharing the first LP-WUS have a good channel environment and can smoothly receive the LP-WUS with only a relatively small payload or amount of information, three terminals may share a single LP-WUS. Since the terminals sharing the second LP-WUS have a relatively poor channel environment and require more payload allocation for reliable reception, two terminals may share a single LP-WUS.

[0103] With the total payload size of the LP-WUS fixed, the base station can variably set the size of the terminal group (number of terminals) sharing a single LP-WUS by comprehensively considering the number of LP-WUS-supported terminals within the cell and the channel quality of each terminal.

[0104] Meanwhile, even within a group of terminals sharing a single LP-WUS, the start time of PDCCH monitoring directed through the LP-WUS may be set differently for each terminal. This means that the timer start time according to the operation of Example 1 or Example 2 described above may differ for each terminal.

[0105] For example, regarding the operation of Example 1, even if the terminals have different start times for drx-onDurationTimer, the base station can configure them to share the same LP-WUS by setting them as a single terminal group.

[0106] In relation to the operation of Example 2, even if the start time of the new timer (tentatively named drx-onDurationTimer-LPWUS) initiated by each terminal differs for each terminal, the base station can configure them to form a single terminal group and share and receive one LP-WUS.

[0107] If the terminals performing the operation of Example 1 are configured as a single group, terminals with different drx-onDurationTimer start times can be configured to share a single LP-WUS through the monitoring window settings.

[0108] Specifically, for terminals where drx-onDurationTimer starts later than for terminals where it starts relatively earlier, the LP-WUS monitoring window may be set to be longer, or an offset may be set so that the LP-WUS monitoring window starts earlier than the timer start time. In other words, even if terminals have different drx-onDurationTimer start times, the absolute start time of the LP-WUS monitoring window can be set to be the same. Through this, even if terminals initiate drx-onDurationTimer at different times, terminals within the same group can receive the LP-WUS transmitted at the same time.

[0109] In addition, LP-WUSs transmitted within the same monitoring window can generally be assumed to contain the same information. Therefore, even if the start times of each terminal's LP-WUS monitoring window do not completely coincide, if a sufficient number of LP-WUS transmissions are guaranteed within an LP-WUS monitoring window of sufficient length, terminals within the same group can be considered to have received LP-WUSs containing substantially the same information. Accordingly, each terminal can initiate PDCCH monitoring based on the received instructions.

[0110] A method of establishing a common Monitoring Occasion (MO) for terminals configured with the operation of Example 1 may be considered. When the same LP-WUS MO is established for a group of terminals configured with the operation of Example 1, the base station can expect the terminals to always monitor the LP-WUS on the same LP-WUS resource, and terminal operations are performed based on this.

[0111] For example, terminals with different timer start times may be configured into a group, and a common LP-WUS setting may be applied to them. The terminals within the group receive the common LP-WUS and obtain information indicating whether to start their PDCCH monitoring. At this time, although the terminals receive the common LP-WUS simultaneously, the actual PDCCH monitoring operation may be performed according to the timer start time individually configured for each terminal.

[0112] For terminals configured with the operation of Example 2, a method of configuring a common LP-WUS MO can be used. Through this, even if terminals with different PDCCH monitoring start times are configured as a single group, they can receive a common LP-WUS and perform subsequent operations according to the instructions contained therein.

[0113] Specifically, terminals with different timer start times are configured as a single terminal group, and a common LP-WUS setting may be applied to the group. The terminals within the group receive a common LP-WUS and obtain information indicating whether to start their own PDCCH monitoring. However, subsequent actions for each terminal (such as the start time of PDCCH monitoring) may vary depending on the start time of the timer individually configured for each terminal.

[0114] Candidate start times for which the timer can be started may be set differently for each terminal. The terminal may start the timer at the earliest candidate start time that arrives after the elapsed time, by considering the minimum time gap from the time of LP-WUS reception or the start time of MR PDCCH monitoring that considers the MR synchronization time.

[0115] A method in which a common LP-WUS MO location is determined based on the timer start time of terminals configured with the operation of Example 2 may be considered. In this case, instead of a periodic LP-WUS MO fixed by periodicity and offset being configured, terminals can expect the LP-WUS to be transmitted before a specific time (e.g., the start time of MR PDCCH monitoring considering the minimum time interval or MR synchronization time) based on the scheduled start time of the timer.

[0116] In order to group terminals with different timer start times, timer start times located within a certain time range can be determined to correspond to a single LP-WUS transmission. In other words, even if the timer start times of each terminal are different, if the start times fall within a specific range, the terminals can be grouped to expect and share an LP-WUS transmission at a single common time point. For example, terminals whose timer start times are located within a specific 2-slot interval can be grouped into a single terminal group, and they can share and receive a single LP-WUS at a time point preceding that interval.

[0117] Various temporal factors may be considered from the time the terminal receives the LP-WUS until the time it initiates PDCCH monitoring via the MR. A minimum time interval may be determined in advance by considering the time required for the MR to complete preparations for performing PDCCH monitoring. Based on this, the LP-WUS MO and the start time of subsequent PDCCH monitoring may be set.

[0118] In order for a terminal to operate in MR mode after receiving LP-WUS, time may be required to perform synchronization. For example, after receiving LP-WUS, MR may start PDCCH monitoring operation after acquiring synchronization through the reception of one or more (e.g., one, two, or three) synchronization signal blocks (SSBs). In applying the methods proposed in this disclosure, the time interval between the LP-WUS MO and the start of MR PDCCH monitoring may include and be considered for the time required for such synchronization.

[0119] For example, there may be cases where multiple terminals are configured as a single terminal group to receive the same LP-WUS, but the MR synchronization time required for each terminal differs. In this case, each terminal can be considered to be configured to start drx-onDurationTimer (or tentatively named drx-onDurationTimer-LPWUS) at different times. Even if the terminals have different start times for drx-onDurationTimer (or tentatively named drx-onDurationTimer-LPWUS) due to differences in MR synchronization time or the like, they can be configured as a single terminal group, and accordingly, the previously proposed shared LP-WUS configuration methods can be applied in the same way.

[0120] Method 2: Codepoint-based LP-WUS Payload Configuration Method

[0121] The LP-WUS may be transmitted in a specific area within the MR's BWP or through a separately configured BWP. Similar to Method 1, the base station may configure a terminal group so that multiple terminals share and receive a single LP-WUS resource.

[0122] LP-WUS can be transmitted periodically in a specific range of the frequency axis at predetermined time intervals. Its payload size can be preset or have a fixed value according to standard specifications. In particular, due to the transmission characteristics of LP-WUS, which utilizes OOK (On-Off Keying) symbols and applies Manchester coding, the payload size may be limited to a certain level. Accordingly, the base station can decide how many terminals to configure into a single terminal group to share the same LP-WUS for a fixed payload size.

[0123] For example, if the payload size that can be transmitted via LP-WUS is 4 bits, the base station can variably set the number of terminals sharing the payload (i.e., the size of the terminal group). If 4 terminals share a 4-bit payload, each terminal receives PDCCH monitoring instructions using an average of 1 bit of information, and if 2 terminals share it, they utilize an average of 2 bits of information. Therefore, the base station can variably set the number of terminals to be included in a terminal group by considering the channel environment and reception performance of each terminal.

[0124] In this embodiment, a method is proposed in which information transmitted through the LP-WUS is configured in the form of a codepoint. For example, if the payload size is 4 bits and two terminals are configured as a group, the LP-WUS payload can be configured to instruct the first terminal (terminal A) to wake up if it is 0000, and to instruct the second terminal (terminal B) to wake up if it is 1111. In addition, a special codepoint (e.g., 1100 or 0011) can be additionally configured to instruct both terminals to wake up.

[0125] In this code point configuration, if the terminal is aware of all or some of the candidates for code points available in the corresponding LP-WUS payload (including those assigned to itself as well as those assigned to other terminals), the terminal's LP-WUS reception performance may be improved. It is assumed that the terminal is aware of code points that can be transmitted to other terminals within the same group, in addition to the code points that can be transmitted to itself.

[0126] As a simple example, consider a case where two terminals share an LP-WUS with a 4-bit payload, and 1010 is set as the wake-up instruction for the first terminal and 0101 is set as the wake-up instruction for the second terminal.

[0127] At this time, if the first terminal receives a value other than 0000, for example, 1000, since the first terminal already knows that the instruction value of the second terminal is 0101, it can determine that the received 1000 is likely to have been transmitted due to an error in its own instruction value of 1010 rather than in another terminal (the second terminal). Accordingly, the first terminal can perform an MR wake-up.

[0128] Meanwhile, if 0111 is received, the first terminal may not perform MR wake-up, as it determines that this is likely a transmission in which an error occurred in the second terminal's instruction value 0101.

[0129] In addition, if a value that is ambiguous as to which it is, such as 0011, is transmitted, the first terminal may not perform MR wake-up because it cannot be determined whether it is an error of 1010 or an error of 0101.

[0130] In the above example, joint wake-up instructions for all terminals have been omitted for convenience of explanation, but the same principle may apply even if such instructions are included. To achieve this operation, specific configuration examples of code points of the LP-WUS payload may be considered for a group of terminals sharing a single LP-WUS. The first and second configuration methods described below may be applied independently or together.

[0131] As a first configuration method, the base station may set actual instructions and available valid codepoints for each terminal and share this information with all terminals within the terminal group. The previously proposed examples may be based on this configuration method.

[0132] Generally, when an LP-WUS is configured to transmit n bits of information, the total number of code points that can be represented is 2^n. In this case, if the number of terminals in a terminal group sharing a single LP-WUS is k, the base station can select k code points from the total 2^n code points and assign them individually to each terminal. The base station can set k' code points for instructions to wake up all terminals in the group or to wake up subgroups containing a specific number of terminals. Therefore, the total number of valid code points (or code point candidates) consists of k+k'.

[0133] The base station can provide this list of k+k' valid code points to all terminals within a terminal group. Additionally, the base station can provide l code point information corresponding to a wake-up instruction for a specific terminal to that specific terminal.

[0134] Even if the received LP-WUS corresponds to an invalid code point, the terminal can probabilistically estimate which valid code point the received signal was distorted due to an error by calculating the Hamming distance between the received signal and the pre-configured valid code points. Consequently, the terminal can identify the valid code point with the highest probability, determine whether it contains a wake-up instruction for itself, and perform subsequent actions accordingly.

[0135] These settings may be determined by the base station by comprehensively considering the payload (amount of information) of the LP-WUS, the number of terminals in the terminal group, channel conditions, etc., or may be pre-configured.

[0136] Specifically, the base station may instruct the terminal, through each parameter (in the form of an array or list), a set of valid code points and / or a set of code points including a wake-up instruction for the terminal.

[0137] The valid code point set parameter (e.g., validCodepoint) contains information about k+k' valid code points for the entire group.

[0138] The terminal-specific wakeup code point set parameter (e.g., wakeupCodepoint) contains information about l code points for waking up the terminal.

[0139] Additionally, validCodepoint may be configured to include only the remaining valid code points, excluding the code points included in wakeupCodepoint.

[0140] For example, assume that the LP-WUS is configured with a 4-bit payload, the wake-up instruction code point for a specific terminal is 1010, 1111, and the other valid code point for other terminals is 0101. For the bit sequence, validCodepoint = {0101, 1010, 1111} and wakeupCodepoint = {1010, 1111} can be set. For the decimal value, validCodepoint = {5, 9, 15} and wakeupCodepoint = {9, 15} can be set. Alternatively, the bit sequence can be validCodepoint = {0101} and wakeupCodepoint = {1010, 1111}.

[0141] As a second setting method, a tolerable Hamming distance (or tolerable distance) may be set or instructed to each terminal along with a code point containing a wake-up instruction.

[0142] The terminal calculates the Hamming distance between the bit value of the payload of the received LP-WUS and the wake-up instruction code point set for itself. If the calculated distance is less than or equal to (or smaller than) the set allowable distance, the terminal determines that the wake-up instruction for itself is intended even if the received LP-WUS contains an error, and subsequently performs terminal operations (such as MR wake-up and / or PDCCH monitoring).

[0143] For example, assume that the LP-WUS is configured with a 4-bit payload, the wake-up instruction codepoints for the terminal are 1010 and 1111 (or decimal 9 and 15), and the valid codepoint for other terminals is 0101, and the acceptable Hamming distance is set to 1. When the terminal receives a payload of 1110, the Hamming distance from the wake-up codepoint of the terminal, 1111, is 1. Since this falls within the acceptable range (1 or less), the terminal determines this as a valid wake-up instruction and performs an MR wake-up operation.

[0144] Method 3: Bitmap-based LP-WUS Payload Configuration Method

[0145] Similar to Method 2, in this embodiment, a group of terminals that share and receive the LP-WUS transmission may be established. Depending on the number of terminals in the terminal group, the position of the bit that each terminal must check on the bitmap of the LP-WUS payload may be specified.

[0146] For example, assume that the LP-WUS is configured with a 4-bit payload and three terminals share a single LP-WUS. In this case, the first through third bits are assigned to the first through third terminals, respectively, and can be configured to indicate no wake-up if the bit value is '0' and wake-up if the bit value is '1'. The last, fourth bit can be set as a common bit to indicate wake-up for all terminals in the group.

[0147] The base station may set or instruct each terminal on the position of the bit (or bit mask) to which it must confirm its wake-up instruction. In the above example, the base station may set the mask to {1001} for the first terminal, {0101} for the second terminal, and {0011} for the third terminal. Specifically, this means the following operation.

[0148] First terminal: Wake up if the first or fourth bit is '1'.

[0149] Second terminal: Wake up if the second or fourth bit is '1'.

[0150] Third terminal: Wake up if the third or fourth bit is '1'.

[0151] As another configuration method, if the number of bits on the bitmap is not evenly distributed among the terminals, a method of allocating more bits to terminals with relatively poor reception performance may be applied.

[0152] For example, if three terminals share a 4-bit payload but the first terminal has insufficient reception performance, the first terminal can be configured to wake up when either the first or second bit is '1' (or through a combination of the two bits). In this case, the first terminal receives the wake-up instruction with 2 bits of information, so it can expect higher reception performance compared to other terminals.

[0153] This configuration method can be variably set according to the number of terminals in a terminal group sharing LP-WUS, and the base station may follow the results of optimization considering the channel environment and / or reception performance of each terminal.

[0154] Method 4: Method for configuring wake-up for terminal groups exceeding the payload representation range

[0155] Method 2 (code point method) and Method 3 (bitmap method) can be effectively applied when the number of terminals in a terminal group is less than or equal to the number of cases that can be represented through the LP-WUS payload (e.g., 2^n for n bits or n for a bitmap). However, an additional configuration method may be required for cases where the number of terminals in a terminal group is greater than the number that can be distinguished by the LP-WUS payload.

[0156] In this embodiment, a method is proposed to configure multiple terminals to be mapped to a single code point or a single bitmap bit. Multiple terminals within a terminal group are grouped to form a single 'terminal sub-group (UE Sub-group),' and a wake-up instruction can be performed on a sub-group basis.

[0157] For example, assume that the payload of the LP-WUS consists of a 4-bit bitmap (or 4 distinguishable states) and that a total of 8 terminals are configured as one terminal group. The base station can group terminals in pairs to form a total of 4 terminal subgroups.

[0158] If LP-WUS payload is 0001: Wake-up instruction for the first terminal subgroup

[0159] If LP-WUS payload is 0010: Wake-up instruction for the second terminal subgroup

[0160] If the LP-WUS payload is 0100: Wake-up instruction for the third terminal subgroup

[0161] If the LP-WUS payload is 1000: Wake-up instructions for the 4th terminal subgroup

[0162] A wake-up instruction for a specific terminal subgroup signifies a wake-up instruction for all terminals belonging to that subgroup. Therefore, when a wake-up is issued for a subgroup, all terminals within that subgroup can begin PDCCH monitoring operations.

[0163] Additionally, if terminal-specific distinction is possible, such as when LP-WUS resource allocation is orthogonal for terminals belonging to each terminal subgroup, a wake-up instruction for a specific terminal within the subgroup may be performed along with a wake-up instruction for the subgroup.

[0164] A-IoT (Ambient Internet of Things)

[0165] A-IoT can be a new type of device or segment that operates solely on energy harvested from the surrounding environment. For example, A-IoT can refer to a new class of Internet of Things devices that operate by being powered by various energy sources harvestable from the surrounding environment, such as radio waves, light, motion, and thermal energy.

[0166] For example, active signal generation and / or backscattering may be one of the communication technologies considered to achieve low-power operation of A-IoT devices. For example, backscattering is a widely used technique in radio frequency identification (RFID) that can enable a device to communicate with a network by reflecting incident waves after modulating them with information to be transmitted. For example, the device may be powered by an incident RF signal or stored energy.

[0167] For example, A-IoT devices can be classified into various device types, such as passive, semi-passive, and active, depending on the energy storage and transmission signal generation methods. For example, a passive device does not have an energy storage device (e.g., a capacitor) and can communicate based on backscatter communication technology. For example, a semi-passive device has an energy storage device and can communicate using backscatter communication technology with the assistance of the energy storage device. For example, an active device has an energy storage device and can communicate by actively generating signals using active RF components and stored energy. For example, in the present disclosure, the following three types of IoT devices may be considered. For example, device A may be a device without energy storage and without independent signal generation (e.g., a device supporting backscatter transmission). For example, device B may be a device with energy storage and without independent signal generation (e.g., a device supporting backscatter transmission). In this case, for example, the use of the stored energy may include amplification of the reflected signal. For example, device C may be a device with energy storage and independent signal generation (e.g., a device with an active RF component for transmission).

[0168] For example, the following basic topologies may be considered to support A-IoT devices in indoor and outdoor scenarios. For example, basic topologies may include a direct connection between a base station and an A-IoT device, a connection between a base station, an intermediate node, and an A-IoT device, support for connection by an auxiliary node, and / or a connection between a terminal and an A-IoT device. The basic topologies proposed in this disclosure are merely examples, and the proposals of this disclosure may be extended and applied to other topologies.

[0169] A-IoT devices can be classified into two types as follows. For example, a Type 1 device has a maximum power consumption of approximately 1 uW, is capable of energy storage, has no amplification function, and can perform transmission by backscattering a carrier wave (CW) provided from an external source (e.g., a reader such as a base station or terminal, or a separate node). For example, a Type 2 device has a maximum power consumption of approximately several hundred uW, is capable of energy storage, has an amplification function, and can perform transmission by backscattering a carrier wave (CW) provided from an external source (e.g., a reader such as a base station or terminal, or a separate node) or by using a signal generated internally.

[0170] For example, in addition to the classification methods described above, the type / class of an A-IoT device may be distinguished based on parameters associated with device characteristics (e.g., presence / capacity of energy storage, degree of energy / power consumption, presence / capability of amplification, presence / capability of a band-pass filter (BPF), supported DL / UL transmission method(s), etc.) or combinations of parameters. Here, for example, the BPF capability may be distinguished by the 3-dB bandwidth of the supported BPF, sharpness, etc., and the UL transmission methods may be distinguished by, for example, backscattered UL transmission, UL transmission by internal signal generation, etc.

[0171] In addition, the type / class of an A-IoT device may be subdivided based on parameters associated with the above device characteristics (e.g., presence / capacity of energy storage, degree of energy / power consumption, presence / capability of amplification, presence / capability of a band-pass filter (BPF), supported DL / UL transmission method(s), etc.) or combinations of such parameters. For example, the above-described Type 2 device may be classified into Type 2a when it performs transmission by backscattering a carrier wave (CW) provided from an external source (e.g., a reader such as a base station or terminal, or a separate node), and Type 2b when it performs transmission using a signal generated internally. In this case, Types 2a and 2b may be identical in that they have a maximum power consumption of approximately several hundred uW, are capable of energy storage, and have amplification capabilities.

[0172] LP-WUS can be transmitted and received between A-IoT devices. Specifically, the waveform transmitted from the reader to the A-IoT device may correspond to the waveform proposed through the embodiments of this specification. The A-IoT device may include only LR without MR. Therefore, when the A-IoT device receives LP-WUS, it may perform operations such as initial connection or data transmission and reception via LR instead of an operation to trigger (or activate) MR.

[0173] It is evident that the examples of the proposed methods described above can also be included as one of the implementation methods and thus can be regarded as a type of proposed method. Furthermore, while the proposed methods described above may be implemented independently, they may also be implemented in the form of a combination (or merger) of some proposed methods. Rules may be defined so that information regarding the application of the proposed methods (or information regarding the rules of the proposed methods) is communicated by a base station to a terminal or by a transmitting terminal to a receiving terminal via a predefined signal (e.g., a physical layer signal or a higher layer signal).

[0174] Implementation example

[0175] FIG. 8 is a flowchart according to one embodiment.

[0176] Referring to FIG. 8, one embodiment based on the methods of the present specification may be a method comprising: receiving setting information for a signal (S801); receiving a signal based on the setting information (S803); and monitoring a PDCCH based on the signal reception (S807). Additionally, a corresponding method may be included in the embodiment, comprising: transmitting setting information for a signal (S801); transmitting a signal based on the setting information (S803); and transmitting a PDCCH based on the signal transmission (S807).

[0177] The signal referred to in FIG. 8 may be, for example, LP-WUS. Or, the signal may be referred to as WUS. Or, the signal may be a downlink signal related to PDCCH monitoring. Monitoring and reception of the signal may be performed through a first receiver, and configuration information regarding the signal may be received through a second receiver.

[0178] The first receiver corresponds to a separate receiver (i.e., LR) for receiving LP-WUS, and the second receiver corresponds to the main receiver (i.e., MR). The second receiver may be a receiver for receiving paging signals or control signals for paging signals. Alternatively, the second receiver may be a receiver capable of receiving PDCCH. Although the specific names may be changed from LP-WUS and MR to something else, the first receiver is designed to consume relatively less power than the second receiver. The main receiver may be a receiver of an existing NR system, and even if it is a receiver by a communication system other than an NR system, it may correspond to the main receiver if it is a receiver triggered based on the reception of a signal from another receiver that consumes relatively less power.

[0179] The first receiver and the second receiver may not be physically distinguishable. In the case of an A-IoT device, only the first receiver may be included among the first receiver and the second receiver.

[0180] In FIG. 8, the configuration information for the signal may include information for a group of terminals receiving the same signal as disclosed in methods 1 to 4. Specifically, for the group of terminals, the configuration information may include information regarding time / frequency resources for monitoring the signal, the number of information bits included in the signal, whether the information bits are code points / bitmaps, the mapping relationship between (one or multiple) terminals for each code point, the mapping relationship between (one or multiple) terminals for each bit of the bitmap, etc.

[0181] Referring to methods 2 through 4, the signal of FIG. 8 includes N information bits. The N information bits may be configured in the form of code points or bitmaps.

[0182] When N information bits are code points, the N information bits can indicate 2^N states. A bit value corresponding to the 2^N states or a value obtained by converting the corresponding binary bit to a decimal number can be referred to as a code point. When a terminal receives a signal containing N information bits, the N information bits are associated with one of the 2^N code points.

[0183] Among 2^N code points that can be represented through N information bits, the terminal can receive information about L code points associated with itself in advance through configuration information. Referring to Method 2, the L code points may include code points for only the terminal receiving the configuration information, and code points for two or more terminals, such as the terminal receiving the configuration information and another terminal.

[0184] Additionally, referring to Method 2, a code point indicating at least one terminal within a terminal group (or all terminals that can be indicated by the information bits of a signal) to which the terminal receiving the configuration information of FIG. 8 belongs is referred to as a valid code point. Accordingly, among the 2^N code points, a code point that does not indicate any terminal may be referred to as an invalid code point. However, the terminology is not limited thereto, and a valid code point may be referred to as a first code point, etc. An invalid code point may be referred to as a second code point, etc.

[0185] The configuration information may include information about all valid code points. Based on the information about all valid code points, the terminal may determine the information bit value of the received code point based on the Hamming distance, even if the received code point is not a valid code point or is not a code point for itself.

[0186] Specifically, referring to Method 2, if the code point detected by the terminal through the signal is not one of the valid code points, the terminal determines a specific code point with the smallest Hamming distance between the detected code point and the valid code points, and if the determined specific code point is one of L code points for itself, PDCCH monitoring can be performed.

[0187] Additionally, if the code point detected by the terminal via the signal is not one of the L code points for itself and is within an acceptable Hamming distance, the terminal can perform PDCCH monitoring.

[0188] Referring to Method 1, terminals belonging to the same terminal group may be determined based on channel status, the start time of PDCCH monitoring, and / or the resource location of the monitoring opportunity. Specifically, terminals whose start time of PDCCH monitoring is within a certain range may be configured as a single terminal group. Additionally, terminals whose time and frequency resources of the monitoring opportunity are identical or within a certain range may be configured as a single terminal group.

[0189] In addition, terminals belonging to the same group with different PDCCH monitoring start times set need to have the opportunity to monitor signals from the same (or within a certain range) resources. Accordingly, the length of the monitoring window for the signal can be set differently among terminals belonging to the same group.

[0190] FIG. 9 illustrates an example of a communication system 1 to which the implementations of the present specification apply. Referring to FIG. 9, the communication system (1) to which the present specification applies includes a wireless device, a BS, and a network. Here, a wireless device refers to a device that performs communication using wireless access technology (e.g., 5G NR (New RAT), LTE (e.g., E-UTRA)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Thing) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with wireless communication capabilities, an autonomous vehicle, a vehicle capable of performing inter-vehicle communication, etc. Here, vehicles may include UAVs (Unmanned Aerial Vehicles) (e.g., drones). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices and may be implemented in the form of HMDs (Head-Mounted Devices), HUDs (Head-Up Displays) equipped in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Portable devices may include smartphones, smartpads, wearable devices (e.g., smartwatches, smart glasses), computers (e.g., laptops, etc.). Home appliances may include TVs, refrigerators, washing machines, etc. IoT devices may include sensors, smart meters, etc. For example, BS and networks may be implemented as wireless devices, and specific wireless devices may operate as BS / network nodes to other wireless devices.

[0191] Wireless devices (100a to 100f) can be connected to a network (300) via a BS (200). Artificial Intelligence (AI) technology may be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. The wireless devices (100a to 100f) may communicate with each other via the BS (200) / network (300), but they may also communicate directly (e.g., sidelink communication) without using the BS / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Also, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0192] Wireless communication / connection (150a, 150b) may be established between wireless devices (100a~100f) / BS (200) and BS (200) / wireless devices (100a~100f). Here, the wireless communication / connection may be established through uplink / downlink communication (150a) and sidelink communication (150b) (or D2D communication) using various wireless access technologies (e.g., 5G NR). Through the wireless communication / connection (150a, 150b), wireless devices and BS / wireless devices may transmit / receive wireless signals to / from each other. To this end, based on various proposals of the present specification, at least some of the following may be performed: a process for setting various configuration information for transmitting / receiving wireless signals, a process for various signal processing (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and a resource allocation process.

[0193] FIG. 10 is a block diagram illustrating examples of communication devices capable of performing the method according to the present specification. Referring to FIG. 10, a first wireless device (100) and a second wireless device (200) can transmit and / or receive wireless signals through various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} may correspond to {wireless device (100x), BS (200)} and / or {wireless device (100x), wireless device (100x)} of FIG. 9.

[0194] The first wireless device (100) includes one or more processors (102) and one or more memories (104), and may additionally include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memory (104) and / or transceivers (106) and may be configured to implement the functions, procedures and / or methods described / suggested below. For example, the processor (102) may process information within the memory (104) to generate a first information / signal and then transmit a wireless signal containing the first information / signal through the transceiver (106). Additionally, the processor (102) may receive a wireless signal containing a second information / signal through the transceiver (106) and then store information obtained from the signal processing of the second information / signal in the memory (104). Memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, memory (104) may store software code containing instructions for performing some or all of the processes controlled by the processor (102) or for performing the procedures and / or methods described / suggested below. Here, the processor (102) and memory (104) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). A transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals through one or more antennas (108). The transceiver (106) may include a transmitter and / or receiver. The transceiver (106) may be interchangeably used with an RF (Radio Frequency) unit. In this specification, a wireless device may mean a communication modem / circuit / chip.

[0195] The second wireless device (200) includes one or more processors (202) and one or more memories (204), and may additionally include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memory (204) and / or transceivers (206) and may be configured to implement the functions, procedures and / or methods described / suggested below. For example, the processor (202) may process information within the memory (204) to generate a third information / signal and then transmit a wireless signal containing the third information / signal through the transceiver (206). Additionally, the processor (202) may receive a wireless signal containing a fourth information / signal through the transceiver (206) and then store information obtained from the signal processing of the fourth information / signal in the memory (204). Memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, memory (204) may store software code containing instructions for performing some or all of the processes controlled by the processor (202) or for performing the procedures and / or methods described / suggested below. Here, the processor (202) and memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). A transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals through one or more antennas (208). The transceiver (206) may include a transmitter and / or receiver. The transceiver (206) may be interchangeably used with an RF unit. In this specification, a wireless device may mean a communication modem / circuit / chip.

[0196] The wireless communication technology implemented in the wireless device (100, 200) of this specification may include LTE, NR, and 6G, as well as Narrowband Internet of Things for low-power communication. In this case, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented according to standards such as LTE Cat NB1 and / or LTE Cat NB2, but is not limited to the names mentioned above. Additionally, or generally, the wireless communication technology implemented in the wireless device (XXX, YYY) of this specification may perform communication based on LTE-M technology. In this case, for example, LTE-M technology may be an example of LPWAN technology and may be referred to by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology may be implemented in at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the names mentioned above. Additionally or generally, wireless communication technology implemented in the wireless device (XXX, YYY) of this specification may include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) with consideration for low-power communication, and is not limited to the names mentioned above. As an example, ZigBee technology can create personal area networks (PANs) related to small / low-power digital communication based on various standards such as IEEE 802.15.4 and may be referred to by various names.

[0197] Hereinafter, hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as a physical (PHY) layer, a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, and a service data adaptation protocol (SDAP) layer). One or more processors (102, 202) may generate one or more protocol data units (PDU) and / or one or more service data units (SDU) according to the functions, procedures, proposals and / or methods disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document. One or more processors (102, 202) may generate a signal (e.g., baseband signal) containing a PDU, SDU, message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document and provide it to one or more transceivers (106, 206). One or more processors (102, 202) may receive a signal (e.g., baseband signal) from one or more transceivers (106, 206) and may obtain a PDU, SDU, message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document.

[0198] One or more processors (102, 202) may be referred to as a controller, microcontroller, microprocessor, or microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The functions, procedures, proposals, and / or methods disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. Firmware or software configured to perform the functions, procedures, proposals, and / or methods disclosed in this document may be included in one or more processors (102, 202) or stored in one or more memories (104, 204) and driven by one or more processors (102, 202). The functions, procedures, proposals, and / or methods disclosed in this document may be implemented using firmware or software in the form of code, instructions, and / or sets of instructions.

[0199] One or more memories (104, 204) may be connected to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories (104, 204) may be composed of ROM, RAM, EPROM, flash memory, hard drive, registers, cache memory, computer read storage media, and / or combinations thereof. One or more memories (104, 204) may be located inside and / or outside of one or more processors (102, 202). Additionally, one or more memories (104, 204) may be connected to one or more processors (102, 202) through various technologies such as wired or wireless connections.

[0200] One or more transceivers (106, 206) may transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or operation flowcharts, etc., of this document to one or more other devices. One or more transceivers (106, 206) may receive user data, control information, wireless signals / channels, etc., as mentioned in the functions, procedures, proposals, methods and / or operation flowcharts, etc., disclosed in this document from one or more other devices. For example, one or more transceivers (106, 206) may be connected to one or more processors (102, 202) and may transmit and / or receive wireless signals. For example, one or more processors (102, 202) may control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be connected to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and / or receive user data, control information, wireless signals / channels, etc., as mentioned in the functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document through one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert the received wireless signal / channel, etc. from an RF band signal to a baseband signal in order to process the received user data, control information, wireless signal / channel, etc. using one or more processors (102, 202).One or more transceivers (106, 206) can convert user data, control information, wireless signals / channels, etc. processed using one or more processors (102, 202) from baseband signals to RF band signals. To this end, one or more transceivers (106, 206) may include (analog) oscillators and / or filters.

[0201] FIG. 11 illustrates another example of a wireless device capable of performing implementation(s) of the present specification. Referring to FIG. 11, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 10 and may be composed of various elements, components, units / parts, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional component (140). The communication unit may include a communication circuit (112) and transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) of FIG. 10 and / or one or more memories (104, 204). For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 10. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and additional components (140) and controls the general operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on a program / code / command / information stored in the memory unit (130). Additionally, the control unit (120) may transmit information stored in the memory unit (130) to the outside (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from the outside (e.g., another communication device) via a wireless / wired interface through the communication unit (110) in the memory unit (130).

[0202] The additional configuration (140) can be configured in various ways depending on the type of wireless device. For example, the additional configuration (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. 9, 100a), a vehicle (Fig. 9, 100b-1, 100b-2), an XR device (Fig. 9, 100c), a portable device (Fig. 9, 100d), a home appliance (Fig. 9, 100e), an IoT device (Fig. 9, 100f), a UE for digital broadcasting, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or financial device), a security device, a climate / environment device, an AI server / device (Fig. 9, 400), a BS (Fig. 9, 200), a network node, etc. Wireless devices can be used in a movable or fixed location depending on the use—e.g., service.

[0203] In FIG. 11, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least partially connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be connected via a wire, and the control unit (120) and the first unit (e.g., 130, 140) may be connected wirelessly via the communication unit (110). Additionally, each element, component, unit / part, and / or module within the wireless device (100, 200) may include one or more additional elements. For example, the control unit (120) may be composed of one or more sets of processors. For example, the control unit (120) may be composed of a set of communication control processors, application processors, ECUs (Electronic Control Units), graphics processing processors, memory control processors, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, transitory memory, non-transitory memory, and / or a combination thereof.

[0204] In this specification, at least one memory (e.g., 104 or 204) may store instructions or programs, and said instructions or programs may, when executed, cause at least one processor operablely connected to said at least one memory to perform operations according to some embodiments or implementations of this specification.

[0205] In this specification, a computer-readable (non-transient) storage medium may store at least one instruction or computer program, and when executed by at least one processor, said at least one instruction or computer program may cause said at least one processor to perform operations according to some embodiments or implementations of this specification.

[0206] In this specification, a processing device or apparatus may include at least one processor and at least one computer memory connectable to said at least one processor. said at least one computer memory may store instructions or programs, and said instructions or programs, when executed, may cause at least one processor operablely connected to said at least one memory to perform operations according to some embodiments or implementations of this specification.

[0207] In this specification, a computer program may include program code stored on at least one computer-readable (non-transient) storage medium and, when executed, perform operations according to some implementations of this specification or cause at least one processor to perform operations according to some implementations of this specification. The computer program may be provided in the form of a computer program product. The computer program product may include at least one computer-readable (non-transient) storage medium.

[0208] A communication device of this specification comprises at least one processor; and at least one computer memory operably connected to said at least one processor and storing instructions that, when executed, cause said at least one processor to perform operations according to the examples(s) of this specification described below.

[0209] As described above, the embodiments of this specification can be applied to various wireless communication systems.

Claims

1. In a method using a terminal, Step of receiving setting information for a signal; A step of receiving the signal based on the above setting information; The method includes the step of monitoring the PDCCH (Physical Downlink Control Channel) based on the reception of the above signal, and The above signal includes N information bits, and the N information bits are associated with one of 2^N code points, and The above setting information includes information on L code points for the terminal among the 2^N code points, method.

2. In Paragraph 1, The above L code points include a code point for a wake-up instruction of the terminal, and a code point for a wake-up instruction of the terminal and another terminal. method.

3. In Paragraph 1, The above setting information includes information on all valid code points among the above 2^N code points, and The above valid code point is a code point for a wake-up instruction for at least one terminal within the terminal group to which the terminal belongs, method.

4. In Paragraph 3, Based on the fact that a code point detected within the above signal is not one of the valid code points, the terminal determines a specific code point with the smallest Hamming distance between the detected code point and the valid code points, and Based on the fact that the above specific code point is included in the above L code points, the above PDCCH is monitored, method.

5. In Paragraph 1, (i) the code point detected in the signal is not one of the L code points, and (ii) the detected code point is within an acceptable Hamming distance for one of the L code points, based on which the PDCCH is monitored, method.

6. In Paragraph 1, For a terminal group composed of terminals capable of receiving the above signal, the number of terminals belonging to the terminal group is determined based on the channel status for each terminal, method.

7. In Paragraph 1, For a terminal group composed of terminals capable of receiving the above signal, the monitoring window length for the above signal is set differently for each terminal belonging to the terminal group, based on the fact that the start time of PDCCH monitoring for the terminals belonging to the terminal group is set differently. method.

8. In Paragraph 7, Terminals whose PDCCH monitoring start times, each set differently above, are within a certain time range, are configured as the terminal group, method.

9. In Paragraph 1, For a terminal group composed of terminals capable of receiving the above signal, the signal monitoring opportunities of the terminals belonging to the terminal group are set with the same time and frequency resources, method.

10. In Paragraph 1, The above signal is an LP-WUS (Low Power Wake-Up Signal), method.

11. In Paragraph 1, Based on the fact that the above signal is received through the LR (Low Power Wake-Up Receiver), a minimum time interval for the operation of the MR (Main Receiver) is set, method.

12. At least one transmitter / receiver; At least one processor; and At least one memory connected to the at least one processor to be operable, and storing instructions that cause the at least one processor to perform a specific operation when executed; comprising The above specific operation is: Step of receiving setting information for a signal; A step of receiving a signal based on the above setting information; The method includes the step of monitoring the PDCCH (Physical Downlink Control Channel) based on the reception of the above signal, and The above signal includes N information bits, and the N information bits are associated with one of 2^N code points, and The above setting information includes information on L code points for the terminal among the 2^N code points, Terminal.

13. A computer-readable non-volatile storage medium comprising at least one computer program that causes a terminal including at least one processor to perform an operation, wherein the operation is: Step of receiving setting information for a signal; A step of receiving a signal based on the above setting information; The method includes the step of monitoring the PDCCH (Physical Downlink Control Channel) based on the reception of the above signal, and The above signal includes N information bits, and the N information bits are associated with one of 2^N code points, and The above setting information includes information on L code points for the terminal among the 2^N code points, Storage medium.

14. In the method using a base station, A step of transmitting setting information for a signal; A step of transmitting a signal based on the above setting information; The method includes the step of transmitting a PDCCH (Physical Downlink Control Channel) based on the transmission of the above signal; The above signal includes N information bits, and the N information bits are associated with one of 2^N code points, and The above configuration information includes information on L code points for a specific terminal among the 2^N code points, method.

15. At least one transmitter / receiver; At least one processor; and At least one memory connected to the at least one processor to be operable, and storing instructions that cause the at least one processor to perform a specific operation when executed; comprising The above specific operation is: A step of transmitting setting information for a signal; A step of transmitting a signal based on the above setting information; The method includes the step of transmitting a PDCCH (Physical Downlink Control Channel) based on the transmission of the above signal; The above signal includes N information bits, and the N information bits are associated with one of 2^N code points, and The above configuration information includes information on L code points for a specific terminal among the 2^N code points, Base station.

16. A computer-readable non-volatile storage medium comprising at least one computer program that causes a base station comprising at least one processor to perform an operation, wherein the operation is: A step of transmitting setting information for a signal; A step of transmitting a signal based on the above setting information; The method includes the step of transmitting a PDCCH (Physical Downlink Control Channel) based on the transmission of the above signal; The above signal includes N information bits, and the N information bits are associated with one of 2^N code points, and The above configuration information includes information on L code points for a specific terminal among the 2^N code points, Storage medium.

Images