Terminal

Abstract

To allow a terminal to appropriately perform monitoring of the low-power signal on the basis of the resource configuration of the monitoring opportunity for the low-power signal.SOLUTION: A terminal includes a receiving unit that performs monitoring of a low power signal during a monitoring opportunity for the low power signal, and a control unit that controls the monitoring, the monitoring opportunity includes available resources and unavailable resources for the low power signal, and the control unit determines whether the available resources are to be used to transmit the low power signal on the basis of the length of the unavailable resources.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a terminal in a wireless communication system. [Background technology]

[0002] In 3GPP (registered trademark), 3rd Generation Partnership Project (3GPP) is studying technology related to low power wake-up signals (LP-WUS) in order to reduce power consumption of terminals.

[0003] Regarding the configuration of the LP-WUS monitoring occasion (MO), a configuration including a "nominal MO duration" and an "actual LP-WUS duration" including usable and unusable symbols is being discussed. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 38.300 V18.5.0(2025-03) [Non-patent document 2] 3GPP TS 38.401 V18.5.0(2025-03) Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the past, depending on the configuration of the MO duration, the terminal was unable to properly determine whether the available resources before and after the unavailable resource could be used for LP-WUS transmission, which could lead to unnecessary monitoring or failure to detect LP-WUS. [Means for solving the problem]

[0006] The terminal in this embodiment comprises a receiving unit that performs monitoring of a low power signal during a monitoring opportunity for the low power signal, and a control unit that controls the monitoring, wherein the monitoring opportunity includes available resources and unavailable resources for the low power signal, and the control unit determines whether the available resources will be used to transmit the low power signal based on the length of the unavailable resources. [Effects of the Invention]

[0007] According to this embodiment, the terminal can appropriately monitor the low power signal based on the resource configuration of the monitoring opportunity for the low power signal. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present invention. [Figure 2] FIG. 10 is a diagram showing an example of the configuration of the nominal MO duration and the actual LP-WUS duration. [Figure 3] 10A and 10B are diagrams illustrating how the nominal MO duration and the actual LP-WUS duration are applied to example configurations of the nominal MO duration and the actual LP-WUS duration, respectively. [Figure 4] FIG. 10 is a diagram showing the relationship between UL settings in MO and unused symbols for LP-WUS. [Figure 5] FIG. 10 illustrates the relationship between TDD UL configuration and unusable symbols for LP-WUS at nominal MO duration. [Figure 6] 10 is a flowchart illustrating an example of an operation procedure executed by a terminal according to the first embodiment of the present invention. [Figure 7] 10 is a diagram illustrating an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in the first embodiment. FIG. [Figure 8] 10 is a diagram illustrating an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in the first embodiment. FIG. [Figure 9]10 is a flowchart illustrating an example of an operation procedure executed by a terminal according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a diagram illustrating an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in the second embodiment. [Figure 11] 11 is a flowchart illustrating an example of an operation procedure executed by a terminal according to a third embodiment of the present invention. [Figure 12] FIG. 11 is a diagram illustrating an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in the third embodiment. [Figure 13] 13 is a flowchart illustrating an example of an operation procedure executed by a terminal according to a fourth embodiment of the present invention. [Figure 14] FIG. 13 is a diagram illustrating an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold Y in the fourth embodiment. [Figure 15] FIG. 2 is a diagram illustrating an example of a functional configuration of a base station according to the present embodiment. [Figure 16] FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to the present embodiment. [Figure 17] FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present embodiment will be described below with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0010] The operation of the wireless communication system of the present embodiment may use an existing technology as appropriate, such as, but not limited to, the existing NR (New Radio) or LTE.

[0011] In the present embodiment described below, terms used in existing technologies, such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel), are used. This is for convenience of description, and similar signals, functions, etc. may be called by other names. The above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used in NR are not necessarily designated as "NR-".

[0012] In this embodiment, the duplex method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or other methods (for example, flexible duplex, etc.).

[0013] In this embodiment, "configuring" radio parameters etc. may mean that predetermined values ​​are pre-configured, or that radio parameters notified from a base station or a terminal are set.

[0014] (System Configuration) Fig. 1 is a diagram for explaining a wireless communication system in this embodiment. As shown in Fig. 1, the wireless communication system in this embodiment includes a base station (gNB) 10 and a terminal (UE (User Equipment)) 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0015] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. A TTI (Transmission Time Interval) in the time domain may be a slot, or a TTI may be a subframe.

[0016] The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, via the NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may be referred to as an SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. Both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell) and a primary cell (PCell) using Carrier Aggregation (CA). Furthermore, the terminal 20 may perform communication via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0017] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 receives various reference signals transmitted from the base station 10 and measures the propagation path quality based on the reception results of the reference signals.

[0018] The terminal 20 in this embodiment supports LP-WUS functions (e.g., functions for LP-WUS monitoring and LP-WUS reception). The LP-WUS is used by the terminal 20 to monitor predetermined resources and trigger necessary communications when the terminal 20 is in an idle or inactive state. The terminal 20 may include a Low Power Wake-Up Radio (LP-WUR) as a low-power radio receiving circuit. The LP-WUR is a receiving circuit that can receive a wake-up signal (WUS) from a network while keeping the main radio circuit (MR: Main Radio) in a sleep state.

[0019] LP-WUR can receive / demodulate a WUS configured using a simple modulation method (e.g., on / off modulation) with low power consumption, and when a WUS is detected, the main receiving circuit in the terminal 20 transitions to an active state. This allows the terminal to perform necessary wireless operations when triggered by a predetermined event (e.g., reception of paging information) while keeping the MR in a sleep state for a long time, thereby improving power saving.

[0020] Regarding the monitoring occasion (MO) for LP-WUS monitoring, a "nominal MO duration" and an "actual LP-WUS duration" are defined. The nominal MO duration includes both usable symbols and unusable symbols. The actual LP-WUS duration is the number of symbols that are expected to be used for LP-WUS transmission by the terminal 20. In this embodiment, MO refers to a monitoring occasion for a low-power signal (e.g., LP-WUS).

[0021] In 3GPP, it is discussed that the nominal MO duration and the actual LP-WUS duration are set based on Alt. A to Alt. D shown in Figure 2. Figure 3 shows how the nominal MO duration and the actual LP-WUS duration are applied to each of Alt. A to Alt. D.

[0022] Alt. A: The nominal MO duration is set, and the actual LP-WUS duration is determined by the number of available symbols in the MO. In this case, the actual LP-WUS duration may differ for each MO.

[0023] Alt. B: The actual LP-WUS duration is set, and MO continues until usable symbols for that duration are available. In this case, an additional termination condition (e.g., a time window) may be set.

[0024] Alt. C: If both the nominal MO duration and the actual LP-WUS duration are set and the number of available symbols in the MO is less than the set value, the MO is determined to be invalid and monitoring may be skipped or postponed.

[0025] Alt. D: The nominal MO duration is set, and the actual LP-WUS duration is determined by a time-domain pattern common to all MOs. This time-domain pattern may be configured to be applied equally to all MOs as a per-MO pattern.

[0026] It is being considered to determine whether a symbol in an MO can be used as a symbol for LP-WUS based on the time-domain pattern set by the gNB or information obtained from existing signals or configurations.

[0027] Here, when transmitting LP-WUS, if resource contention occurs with other existing signals or configurations, available resources may be limited.

[0028] Examples of existing signals or configurations include SSB (Synchronization Signal Block), CORESET (Control Resource Set) / Type-0 CSS (Common Search Space), TDD DL / UL configuration (Time Division Duplex Downlink / Uplink Configuration), Paging PDSCH (Physical Downlink Shared Channel), and TRS (Tracking Reference Signal), which may be configured in connected mode.

[0029] SSB, CORESET / Type-0 CSS, and TRS are all based on time-domain patterns and occupy limited resources, e.g., SSB occupies only 20 physical resource blocks (PRBs) and 4 symbols.

[0030] On the other hand, the TDD UL configuration is configured as a time domain pattern, but it occupies resources of more than one slot. In addition, the Paging PDSCH is dynamically scheduled by the Physical Downlink Control Channel (PDCCH) and may occupy the entire bandwidth (BWP) and one slot's worth of resources.

[0031] As shown in Figure 4, if a signal or configuration that occupies resources over a wide bandwidth or for a long period of time, such as a TDD UL setting or a Paging PDSCH, overlaps with an MO for LP-WUS, the available resources within the MO may be significantly limited, potentially resulting in a large number of resources that cannot be used for LP-WUS transmission (unusable resources) or unused resources for LP-WUS.

[0032] Here, for example, when Alt. B above is applied to the configuration of the nominal MO duration and the actual LP-WUS duration, if the consecutive available symbols required for LP-WUS transmission cannot be secured, the terminal may not be able to perform LP-WUS monitoring.

[0033] Furthermore, depending on the configuration of the nominal MO duration and the actual LP-WUS duration (e.g., the Alt. 2 configuration), all available symbols in the MO are used for LP-WUS, so there may be unused resources even if they are available, as shown in Figure 5. For example, when resources overlap with the MO, such as in the TDD UL configuration or Paging PDSCH, the resources available for LP-WUS may be significantly limited, which may reduce the detection success rate.

[0034] (Present embodiment) According to this embodiment, the terminal 20 can appropriately monitor the LP-WUS based on the resource configuration of the nominal MO duration of the LP-WUS.

[0035] An example of the operation of this embodiment will be described below. One or more examples included in this embodiment may be executed independently or in any combination.

[0036] In this embodiment, "A is larger (or smaller) than B" may be read as "A is equal to or larger than B (or smaller than B)."

[0037] The symbols in this embodiment may be read as resources, and the number of symbols (resources) in this embodiment may be read as the length or size of the symbols (resources).

[0038] The nominal MO duration in this embodiment may simply be referred to as a monitoring occasion (MO) or an MO in a given time frame.

[0039] In this embodiment, the assumed operation by the terminal 20 (UE assumption) means an operation performed under the assumption that a specific state or condition exists based on the settings or specifications (e.g., 3GPP technical specifications) from the network (e.g., base station 10).

[0040] In the following description of this embodiment, the operation of the terminal 20 may be read as the operation of the base station 10.

[0041] Example 1 Example 1 of the present embodiment will be described with reference to Fig. 6 to Fig. 8. Fig. 6 is a flowchart showing an example of an operation procedure executed by the terminal 20 in Example 1. Figs. 7 and 8 are diagrams showing an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in Example 1.

[0042] 6, it is determined whether the number of consecutive unusable symbols in the nominal MO duration is greater than a predetermined threshold (threshold X). Threshold X is a threshold that is compared with the number of consecutive unusable symbols in the nominal MO duration.

[0043] As shown in Figure 7, we will take the case where threshold X is "5" and 6 symbols are used for LP-WUS transmission as an example. In the upper diagram of Figure 7, the number of consecutive unusable symbols, 2, in nominal MO duration #1 is less than threshold X=5. On the other hand, in the upper diagram of Figure 7, the number of consecutive unusable symbols, 14, in nominal MO duration #2 is greater than threshold X=5.

[0044] If the number of consecutive unusable symbols is greater than the threshold X (Yes in step S101), in step S102, the terminal 20 assumes that the usable symbols before the consecutive unusable symbols in the nominal MO duration are not used for LP-WUS transmission by the base station 10.

[0045] As shown in the upper diagram of Figure 7, the number of consecutive unusable symbols "14" in the nominal MO duration #2 is greater than the threshold X = 5. Therefore, the two usable symbols before the consecutive unusable symbols in the nominal MO duration #2 are not used for LP-WUS transmission, and become usable but unused symbols, as shown in the lower diagram of Figure 7.

[0046] In this embodiment, as in step S102, if the usable symbols before the consecutive unusable symbols in the nominal MO duration are not used for LP-WUS transmission, the nominal MO duration may be changed. For example, as shown in the lower diagram of Figure 7, two usable symbols corresponding to two usable but unused symbols may be added to nominal MO duration #2. In this way, the nominal MO duration may be changed based on the usable symbols determined not to be used for LP-WUS transmission.

[0047] On the other hand, if the number of consecutive unusable symbols is less than or equal to the threshold X (No in step S101), in step S103, the terminal 20 assumes that the usable symbol before the consecutive unusable symbols within the nominal MO duration will be used for transmitting the LP-WUS.

[0048] In the upper diagram of Figure 7, the number of consecutive unusable symbols, 2, in the nominal MO duration #1 is less than or equal to the threshold X = 5. Therefore, the two usable symbols before the consecutive unusable symbols in the nominal MO duration #1 are used for LP-WUS transmission.

[0049] 6, even if the total number of unusable symbols within the nominal MO duration is greater than the threshold X, if the number of consecutive unusable symbols is equal to or less than the threshold X, the determination in step S101 is No, and step S103 is executed. For example, as shown in FIG. 8, the total number of unusable symbols within the nominal MO duration is "6" greater than the threshold X=5, but the number of consecutive unusable symbols is "3" less than the threshold X=5, so the two usable symbols before the consecutive unusable symbols within the nominal MO duration are used for LP-WUS transmission.

[0050] The threshold X may be set for the terminal 20 by the network or may be defined by a specification (eg, a 3GPP technical specification).

[0051] The threshold X may be set based on the capability of the terminal 20 (UE capability).

[0052] The threshold X may vary depending on the subcarrier spacing (SCS), frequency band, or other conditions.

[0053] The threshold X may be expressed in other terms such as "maximum gap" or "maximum continuously available resource."

[0054] The usable or unusable symbols for the LP-WUS may be determined based on the following procedures or conditions Alt.1-Alt.4.

[0055] (Alt 1) Time-domain pattern configured by the gNB (Alt. 1A) The time domain pattern of Alt. 1 above may be a periodic time domain pattern. The periodic time domain pattern may be, for example, one or a combination of the following (1) to (5):

[0056] (1) A pattern that has a period of one slot and indicates the available symbols in each slot. (2) A pattern that has a periodicity of multiple slots or frames and is represented by a bitmap (3) Search Space Set Similar Patterns (4) Time domain patterns with hierarchical structure (5) Configuration that reuses the mechanism of rate matching patterns (Alt. 1B) A configuration that includes individual time domain patterns (Per-MO patterns) that are commonly applied to all MOs in the time domain patterns of Alt. 1 / Alt. 1A above. (Alt 2) Configuration to determine whether LP-WUS is available or unavailable for UEs in idle or inactive state based on information obtained from existing configurations (e.g., SSB, CORESET / Type-0 CSS, TDD DL / UL settings, etc.) (Alt 3) Combination with Alt 1 and Alt 2 (Alt 4) A configuration where the LP-WUS configuration is guaranteed by the network to avoid collisions with existing signals. Example 2 According to Example 2 of this embodiment, even if the number of consecutive unusable symbols within the nominal MO duration is greater than the threshold X, if the consecutive unusable symbols start from the beginning (head) of the nominal MO duration, the usable symbols may be used for LP-WUS transmission.

[0057] Example 2 of the present embodiment will be described with reference to Fig. 9 and Fig. 10. Fig. 9 is a flowchart showing an example of an operation procedure executed by the terminal 20 in Example 2. Fig. 9 is a diagram showing an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in Example 2.

[0058] In step S201 of FIG. 9, it is determined whether the number of consecutive unusable symbols in the nominal MO duration is greater than a threshold X.

[0059] If the number of consecutive unusable symbols is equal to or less than the threshold X (No in step S201), in step S204, the terminal 20 assumes that the usable symbols within the nominal MO duration are used for transmitting LP-WUS.

[0060] On the other hand, if the number of consecutive unusable symbols is greater than threshold X (Yes in step S201), it is determined in step S202 whether the consecutive unusable symbols start from the beginning (head) of the nominal MO duration.

[0061] If the consecutive unusable symbols do not start at the beginning (head) of the nominal MO duration (No in step S202), in step S203, the terminal 20 assumes that the usable symbols within the nominal MO duration are not used for transmitting LP-WUS.

[0062] On the other hand, if the consecutive unusable symbols start from the beginning (head) of the nominal MO duration (Yes in step S202), in step S204, the terminal 20 assumes that the usable symbols within the nominal MO duration are used for transmitting LP-WUS.

[0063] For example, as shown in Figure 10, the number of consecutive unusable symbols in the nominal MO duration is 6, which is greater than the threshold X=5, but the consecutive unusable symbols start from the beginning of the nominal MO duration. In this case, the available symbols in the nominal MO duration are used for transmitting the LP-WUS.

[0064] Example 3 According to Example 3 of this embodiment, if the number of consecutive unusable symbols within the nominal MO duration is greater than threshold X, the terminal 20 may assume that the set nominal MO duration is not valid (i.e., invalid).

[0065] Example 3 of the present embodiment will be described with reference to Fig. 11 and Fig. 12. Fig. 11 is a flowchart showing an example of an operation procedure executed by the terminal 20 in Example 3. Fig. 12 is a diagram showing an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold X in Example 2.

[0066] In step S301 of FIG. 11, it is determined whether the number of consecutive unusable symbols in the nominal MO duration is greater than a threshold X.

[0067] If the number of consecutive unusable symbols is equal to or less than the threshold X (No in step S301), in step S304, the terminal 20 assumes that the usable symbols within the nominal MO duration are used for transmitting LP-WUS.

[0068] On the other hand, if the number of consecutive unusable symbols is greater than the threshold X (Yes in step S301), it is determined in step S302 that the set nominal MO duration is invalid.

[0069] For example, as shown in FIG. 12, if the number of consecutive unusable symbols "6" in the nominal MO duration #2 is greater than the threshold X=5, the nominal MO duration #2 is determined to be invalid.

[0070] In step S303, the terminal 20 assumes that the invalid nominal MO duration (nominal MO duration #2 in FIG. 12) is skipped or postponed.

[0071] Example 4 According to Example 4 of this embodiment, if the number (i.e., total number) of unusable symbols within the nominal MO duration is greater than a predetermined threshold (threshold Y), the terminal 20 may assume that the set nominal MO duration is not valid (i.e., invalid).

[0072] Example 3 of the present embodiment will be described with reference to Fig. 13 and Fig. 14. Fig. 13 is a flowchart showing an example of an operation procedure executed by the terminal 20 in Example 3. Fig. 14 is a diagram showing an example of the relationship between the nominal MO duration, usable symbols, unusable symbols, and threshold value X in Example 2.

[0073] 13, it is determined whether the total number of unusable symbols in the nominal MO duration is greater than a threshold Y. The threshold Y is a threshold that is compared with the total number of unusable symbols in the nominal MO duration.

[0074] If the total number of unusable symbols is equal to or less than the threshold Y (No in step S401), in step S404, the terminal 20 assumes that the usable symbols within the nominal MO duration are used for transmitting the LP-WUS.

[0075] On the other hand, if the total number of unusable symbols is greater than the threshold Y (Yes in step S401), it is determined in step S402 that the set nominal MO duration is invalid.

[0076] For example, as shown in FIG. 14, if the total number of unusable symbols in nominal MO duration #2, "6", is greater than the threshold Y=5, nominal MO duration #2 is determined to be invalid.

[0077] In step S403, the terminal 20 assumes that the invalid nominal MO duration (nominal MO duration #2 in FIG. 14) is skipped or postponed.

[0078] According to the above-described embodiment, the terminal 20 can appropriately monitor the LP-WUS based on the resource configuration of the nominal MO duration of the LP-WUS.

[0079] (Device configuration) Next, a description will be given of an example of the functional configuration of the base station (gNB 10) 10 and the terminal (UE 20) 20 that execute the processes and operations described above. The base station 10 and the terminal 20 include functions to execute the above-described embodiments. However, the base station 10 and the terminal 20 may each be equipped with only a part of the functions of the embodiments.

[0080] <Base station (gNB)> Fig. 15 is a diagram showing an example of the functional configuration of the base station 10 in this embodiment. As shown in Fig. 15, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 15 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations in this embodiment. The transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.

[0081] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The transmitter 110 transmits setting information, instructions, notifications, etc. related to a low-power wake-up signal to the terminal 20. The transmitter 110 transmits notifications related to switching of monitoring operations to the terminal. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitter 110 has a function of transmitting PSS, SSS, PBCH, DL / UL control signals, etc. to the terminal 20. The receiver 120 receives inter-network node messages from other network nodes.

[0082] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20. The content of the setting information is, for example, information on the operations explained in the embodiments.

[0083] The control unit 140 controls the settings, instructions, and notifications related to the operations described in the embodiments. The function unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the function unit related to signal reception in the control unit 140 may be included in the receiving unit 120.

[0084] <Device (UE)> Fig. 16 is a diagram showing an example of the functional configuration of the terminal 20 in this embodiment. As shown in Fig. 16, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 16 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations in this embodiment. The transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.

[0085] The transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The transmitter 210 transmits capability information in a low-power wake-up signal to the base station 10. The receiver 220 receives various signals wirelessly and acquires higher layer signals from the received physical layer signals. The receiver 220 has a function of receiving PSS, SSS, PBCH, DL / UL / SL control signals, etc. transmitted from the base station 10. The receiver 220 receives paging notification information and configuration information, instructions, and notifications related to the low-power wake-up signal from the base station 10. For example, the receiver 220 receives a low-power wake-up signal from the base station 10. The configuration unit 230 stores various configuration information received from the base station 10 by the receiver 220. The configuration unit 230 also stores pre-configured configuration information. The configuration information includes, for example, information on the operations described in the embodiments.

[0086] As described in the embodiments, the control unit 240 controls settings, instructions, and notifications related to the operations described in the embodiments. A functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

[0087] (Hardware configuration) The block diagrams (FIGS. 15 and 16) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by hardware, software, or a combination of these. The method for realizing each functional block is not particularly limited. That is, each functional block may be realized by using a single device that is physically or logically coupled, or may be realized by using two or more physically or logically separated devices that are connected directly or indirectly (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0088] For example, a base station, a terminal, a network node, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 17 is a diagram illustrating an example of the hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. The above-described base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0089] In the present disclosure, the term "apparatus" may be interchangeable with any two terms selected from a set of terms such as circuit, device, unit, module, chip, means, etc. The hardware configurations of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0090] Each function in the base station 10 and the terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, memory 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls the reading, writing, or both reading and writing of data in the memory 1002 and storage 1003.

[0091] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, a baseband signal processing unit, a call processing unit, etc. may be realized by the processor 1001. Although only one processor 1001 is shown in the figure, there may be multiple processors.

[0092] The processor 1001 reads programs (program codes), software modules, data, etc. from the storage 1003, the communication device 1004, or both the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 401 of the terminal 20 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks. While the above-described various processes have been described as being executed by a single processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line, or may be provided to the computer via the communication device 1004, for example.

[0093] The present disclosure also provides a computer program product including a computer program, which may implement the steps of the methods described in the above embodiments when the computer program is executed by a computer (e.g., the processor 1001).

[0094] The memory 1002 is a computer-readable recording medium and may be configured, for example, as a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or a combination of at least two of these. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), or the like. The memory 1002 can store executable programs (program codes), software modules, and the like for executing the wireless communication method according to one embodiment of the present disclosure.

[0095] Storage 1003 is a computer-readable recording medium, and may be, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, or a combination of at least two of these. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, memory 1002, storage 1003, or a database, server, or other appropriate medium including both memory 1002 and storage 1003.

[0096] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via a wired network, a wireless network, or both wired and wireless networks, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, or a combination of at least two of these. For example, a transmitting / receiving antenna, an amplifier unit, a transmitting / receiving unit, or a transmission path interface may be realized by the communication device 1004. The transmitting / receiving unit may be implemented as a transmitting unit and a receiving unit that are physically or logically separated.

[0097] The input device 1005 is an input device that receives input from the outside (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, or a combination of at least two of these). The output device 1006 is an output device that performs output to the outside (for example, a display, a speaker, an LED lamp, or a combination of at least two of these). The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0098] The processor 1001, memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between the devices.

[0099] The base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), a graphics processing unit (GPU), a neural processing unit (NPU), or a combination of at least two of these, and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0100] <Additional notes> (Additional note 1) a receiving unit that performs monitoring of the low power signal at an opportunity for monitoring the low power signal; a control unit that controls the monitoring, the monitoring opportunity includes available and unavailable resources for the low power signal; The control unit determines whether the available resource is to be used for transmitting the low power signal based on the length of the unusable resource.

[0101] (Additional note 2) The terminal according to Supplementary Claim 1, wherein the length of the unavailable resource is the length of consecutive unavailable resources.

[0102] (Additional note 3) The terminal described in Supplementary Claim 2, wherein the control unit determines that the available resource before the consecutive unavailable resource in the monitoring opportunity will not be used to transmit the low power signal if the length of the consecutive unavailable resource is greater than a predetermined threshold.

[0103] (Additional note 4) The terminal according to Supplementary Claim 3, wherein the control unit changes the monitoring occasion based on the length of the available resource determined not to be used for transmitting the low power signal.

[0104] (Additional note 5) The terminal described in Supplementary Claim 2, wherein the control unit determines that the available resources are to be used to transmit the low power signal if the length of the consecutive unavailable resources is greater than a predetermined threshold and the consecutive unavailable resources start from the beginning of the monitoring opportunity.

[0105] (Additional note 6) The terminal according to claim 2, wherein the control unit determines that the monitoring opportunity is invalid if the length of the consecutive unavailable resources is greater than a predetermined threshold.

[0106] According to the above configuration, the terminal can appropriately monitor the low power signal based on the resource configuration of the monitoring opportunity for the low power signal.

[0107] (Supplementary explanation of the embodiment) Although the present embodiment has been described above, the disclosed invention is not limited to such an embodiment, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of the processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to this embodiment and the software operated by the processor of the terminal 20 according to this embodiment may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

[0108] The aspects / embodiments described in the present disclosure may be categorized as Long Term Evolution (LTE), LTE-Advanced (LTE-A), International Mobile Telecommunications-Advanced (IMT-Advanced), 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G-Advanced (5G-A), 6th generation mobile communication system (6G), xth generation mobile communication system (x is, for example, an integer or a decimal number)), Future Radio Access (FRA), New Radio (NR), New radio access (NX), Future generation radio access (FX), Open Radio Access Network (O-RAN), Wideband Code Division Multiple Access (W-CDMA) (registered trademark), Global System for Mobile communications (GSM) (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) Engineers) 802.11, IEEE802.11x (where x is any character string such as b, a, g, n, ac, ax, be, or bn, and when x=n it is called Wi-Fi4, when x=ac it is called Wi-Fi5, when x=ax it is called Wi-Fi6 or Wi-Fi6E, when x=be it is Wi-Fi7, and when x=bn it is called Wi-Fi8, etc. Wi-Fi is a registered trademark.), IEEE802.16 (WiMAX (registered trademark), IEEE802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), network virtualization technology (e.g., NFV (Network Function Virtualization), SFC (Service Function Chaining), SDN (Software Defined Networking)), or LPWA (Low Power Wide Area). Each aspect / embodiment described in the present disclosure may be applied to a system based on a combination of at least two of these technologies. Of course, "based on" may refer not only to a system that uses the technology, but also to a system that uses an extension or modification of the technology.

[0109] In the present disclosure, any two terms selected from a set of terms such as "base station (BS)", "radio base station", "fixed station (fixed station)", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point (AP)", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "radio unit (RU)", "remote unit (RU)", "control unit (CU)", "distributed unit (DU)", "remote radio head (RRH)", "node", "gateway", "terrestrial base station", "stratospheric base station", "unmanned aerial vehicle", "high altitude platform station (HAPS)", "airborne platform", "panel", "cell", "radio access network (RAN)", and "network" may be used interchangeably.

[0110] Each cell accommodated by a base station may be referred to by terms such as a macro cell, a small cell, a femto cell, a pico cell, a serving cell, or a super cell. In the present disclosure, any two terms selected from a set of terms such as "cell," "sector," "cell group," "carrier," "component carrier," "cluster," "bandwidth part (BWP)," and "carrier bandwidth" may be used interchangeably.

[0111] In the present disclosure, any two terms selected from the set of terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE 20)", "Device", "Module" and "Terminal" may be used interchangeably.

[0112] A terminal may be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, router (e.g., home router, mobile router, etc.), TCU (Telematics Control Unit), or some other suitable terminology.

[0113] The base station and the terminal may each be composed of one or more devices. The devices constituting at least a portion of the base station and the terminal may be called a transmitting device, a receiving device, a communication device, etc. Note that the devices constituting at least a portion of the base station and the terminal may be, for example, an object itself, such as a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a connected car, an excavator, a bulldozer, a wheel loader, a dump truck, a forklift, a train, a bus, a handcar, a rickshaw, a ship and other watercraft, an airplane, a rocket, an unmanned aerial vehicle, a stratospheric base station (e.g., a High Altitude Platform Station (HAPS)), an artificial satellite (e.g., a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite), a drone (registered trademark), a multicopter, a quadcopter, a balloon, or an Internet of Things (IoT) device (e.g., a smart meter, a sensor), or may include, but are not limited to, an object or device mounted on the object. The object may be a moving object (hereinafter referred to as a "moving object"; this does not exclude the case where the moving object is in a stationary state where it is not moving), or may be a fixedly positioned object (hereinafter referred to as a "non-moving object").

[0114] A base station in the present disclosure may be read as a terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between multiple terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)) or communication of a non-terrestrial network (NTN). In this case, the terminal 20 may be configured to have at least some of the functions of the base station 10 described above. Terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "sidelink") or terms corresponding to NTN (for example, feeder link or service link). For example, an uplink channel or a downlink channel may be read as a sidelink channel.

[0115] The present disclosure is also applicable to cases where at least some of the devices constituting the base station and the terminal operate outside the ground (for example, in the atmosphere or outer space).

[0116] In this disclosure, the term "terminal" may be interpreted as a base station. In this case, the base station 10 may be configured to have the functions of the terminal 20 described above.

[0117] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination of at least two of these. Note that the physical layer signaling may be referred to as Layer 1 (L1) control information. The MAC signaling may be referred to as a MAC Control Element (CE) or a MAC Protocol Data Unit (PDU), for example. The RRC signaling may be referred to as an RRC message or an information element (IE) in the RRC message. The RRC message may be, for example, a message used for controlling an RRC connection (for example, setup, reconfiguration, establishment, reestablishment, release, or resume), mobility, a measurement report, or notification of a terminal's capabilities, or may be an information element within the message. Notification of information may be explicit or implicit. Note that explicit notification of certain information means notification of the certain information itself, and implicit notification of certain information may mean notification of information other than the certain information, or may mean that the certain information is considered to have been notified when a certain condition is satisfied.Notification of information may include not only notification between the same layers of different devices (e.g., between a lower layer or an upper layer of the base station 10 and the terminal 20) but also notification between different layers in the same or different devices (e.g., between a lower layer and an upper layer in the base station 10 or the terminal 20). Notification of information from one device to another device may be performed via one or more devices. With regard to any information (e.g., a variable, a constant, a parameter, a setting) described in the present disclosure, even if not specifically specified in the above embodiments, information indicating / specifying (or related to) the any information (value) may be notified from any first device (e.g., a terminal / base station) to any second device (e.g., a base station / terminal).

[0118] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0119] In the present disclosure, a specific operation described as being performed by a base station may be performed by its upper node or by some of its upper nodes (e.g., CU, RU, or DU, etc.) in some cases. It is clear that various operations performed for communication with a terminal in a RAN or core network may be performed by at least some of the base station and other network nodes other than the base station. The other network node may be one node or a combination of multiple nodes. The network node is, for example, a node provided in various core networks such as EPC (Evolved Packet Core) and 5GC (5G Core Network), and provides one or more network functions (NF: Network Functions), but is not limited to this.

[0120] In the present disclosure, the action of "a terminal receives information from a base station" accompanies the action of "the base station transmits the information to the terminal", "the base station generates the information", or both. Similarly, the action of "a terminal transmits information to a base station" accompanies the action of "the base station receives the information from the terminal". The actions of "the terminal is configured to..." or "configure UE 20 to..." may include the action of "the base station transmits configuration information regarding the configuration of the terminal" and the action of "the terminal configures a predetermined operation based on the configuration information".

[0121] Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched depending on the implementation.

[0122] The present disclosure has been described above, but it is for illustrative purposes only, and the present invention is not limited to the aspects / embodiments described in the present disclosure. The present disclosure can be implemented in modified and altered forms without departing from the spirit of the invention. The present disclosure and its modifications and alterations are included in the scope of the present invention and its equivalents.

[0123] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0124] The radio resource may be defined by a combination of resource units in one or more domains, such as the time domain, the frequency domain, the spatial domain, the code domain, and the power domain.

[0125] For example, resources in the time domain may be defined by one or more time units. The one or more time units may include, but are not limited to, a radio frame, a subframe, a slot, a symbol, a transmission time interval (TTI), or a combination of at least two of these. The time unit may be a fixed-length time unit independent of numerology, a variable-length time unit dependent on numerology, or both. Examples of fixed-length time units include, but are not limited to, a subframe consisting of one or more slots and a radio frame including multiple subframes. Examples of variable-length time units include, but are not limited to, a symbol and a slot including a fixed number of symbols. Note that a certain time unit may be divided into time units shorter than the certain time unit. Examples of shorter time units include, but are not limited to, a minislot consisting of fewer symbols than the number of symbols constituting a slot. The above-described time units may include, for example, time units used as units for scheduling, link adaptation, etc. Any time unit in the present disclosure may be read as another time unit.

[0126] Numerology is a parameter that defines the physical layer structure, and may be a parameter based on at least one of subcarrier spacing (SCS), symbol length, cyclic prefix length, and sampling time, for example.

[0127] Resources in the frequency domain may be defined, for example, by one or more frequency units. The one or more frequency units may include, for example, subcarriers, resource blocks (RBs), bandwidth parts (BWPs), carrier bandwidths, or a combination of at least two of these, but the terminology of the frequency units is not limited to these. The number of subcarriers included in a frequency unit may be a fixed number regardless of numerology, or may be a variable number that changes depending on numerology. For example, an RB is composed of a predetermined number of consecutive subcarriers in the frequency domain, and the number of subcarriers included in the RB may be the same regardless of numerology, for example, 12, but is not limited to this. A BWP may be composed, for example, of one or more consecutive RBs within a certain carrier bandwidth, but is not limited to this. One or more BWPs may be configured within one carrier for terminal 20, and at least one of the BWPs may be activated. Any frequency unit in the present disclosure may be interchangeable with another frequency unit.

[0128] Resources in both the time domain and the frequency domain may be defined by one or more time / frequency units, each of which is composed of a time unit and a frequency unit, such as, but not limited to, a resource element (RE) composed of one symbol and one subcarrier, a resource element group (REG) composed of a predetermined number of REs, or a control resource set (CORESET) composed of a predetermined number of symbols and a predetermined number of RBs.

[0129] The resources in the spatial domain may be defined, for example, by one or more spatial units, including, but not limited to, a beam, a layer of a multi-input multi-output (MIMO), an antenna port, or a combination of at least two of these.

[0130] The resources in the code domain may be defined by one or more code units, such as, but not limited to, a cyclic shift (CS), an orthogonal cover code (OCC), or a combination thereof.

[0131] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0132] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc. [Explanation of symbols]

[0133] 10 base station 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 terminals 210 Transmitter 220 Receiving unit 230 Setting Section 240 Control Unit 1001 processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication equipment 1005 Input Device 1006 Output Device

Claims

1. a receiving unit that performs monitoring of the low power signal at an opportunity for monitoring the low power signal; a control unit that controls the monitoring, the monitoring opportunity includes available and unavailable resources for the low power signal; The control unit determines whether the available resource is to be used for transmitting the low power signal based on the length of the unusable resource.

2. The terminal of claim 1 , wherein the length of the unavailable resource is the length of consecutive unavailable resources.

3. 3. The terminal according to claim 2, wherein the control unit determines that the available resource before the consecutive unavailable resource in the monitoring occasion will not be used for transmitting the low-power signal if the length of the consecutive unavailable resource is greater than a predetermined threshold.

4. The terminal according to claim 3 , wherein the control unit changes the monitoring occasion based on a length of the available resource determined not to be used for transmitting the low-power signal.

5. 3. The terminal of claim 2, wherein the control unit determines that the available resource is to be used for transmitting the low-power signal if the length of the consecutive unavailable resource is greater than a predetermined threshold and the consecutive unavailable resource starts from the beginning of the monitoring opportunity.

6. The terminal according to claim 2 , wherein the control unit determines that the monitoring opportunity is invalid if the length of the consecutive unavailable resources is greater than a predetermined threshold.

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